blob: fb4e2b243cf221a45f9d0c4cb4baa5b8cc57fb0d [file] [log] [blame]
Thierry Fourniere726b142016-02-11 17:57:57 +01001/*
2 * Lua unsafe core engine
3 *
4 * Copyright 2015-2016 Thierry Fournier <tfournier@arpalert.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
Bertrand Jacquinf4c12d42021-01-21 21:14:07 +000013#define _GNU_SOURCE
14
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010015#include <ctype.h>
Thierry FOURNIERbabae282015-09-17 11:36:37 +020016#include <setjmp.h>
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010017
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010018#include <lauxlib.h>
19#include <lua.h>
20#include <lualib.h>
21
Thierry FOURNIER463119c2015-03-10 00:35:36 +010022#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 503
23#error "Requires Lua 5.3 or later."
Cyril Bontédc0306e2015-03-02 00:08:40 +010024#endif
25
Willy Tarreau8d2b7772020-05-27 10:58:19 +020026#include <import/ebpttree.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010027
Willy Tarreaub2551052020-06-09 09:07:15 +020028#include <haproxy/api.h>
29#include <haproxy/applet.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020030#include <haproxy/arg.h>
Christopher Fauletd25d9262020-08-06 11:04:46 +020031#include <haproxy/auth.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020032#include <haproxy/cfgparse.h>
Willy Tarreauf1d32c42020-06-04 21:07:02 +020033#include <haproxy/channel.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020034#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020035#include <haproxy/connection.h>
Willy Tarreau5413a872020-06-02 19:33:08 +020036#include <haproxy/h1.h>
Willy Tarreau86416052020-06-04 09:20:54 +020037#include <haproxy/hlua.h>
Willy Tarreau8c794002020-06-04 10:05:25 +020038#include <haproxy/hlua_fcn.h>
Willy Tarreauc2b1ff02020-06-04 21:21:03 +020039#include <haproxy/http_ana.h>
Willy Tarreau126ba3a2020-06-04 18:26:43 +020040#include <haproxy/http_fetch.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020041#include <haproxy/http_htx.h>
Willy Tarreauc761f842020-06-04 11:40:28 +020042#include <haproxy/http_rules.h>
Willy Tarreau36979d92020-06-05 17:27:29 +020043#include <haproxy/log.h>
Willy Tarreau2cd58092020-06-04 15:10:43 +020044#include <haproxy/map.h>
Willy Tarreau8efbdfb2020-06-04 11:29:21 +020045#include <haproxy/obj_type.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +020046#include <haproxy/pattern.h>
Willy Tarreau469509b2020-06-04 15:13:30 +020047#include <haproxy/payload.h>
Willy Tarreaua264d962020-06-04 22:29:18 +020048#include <haproxy/proxy-t.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020049#include <haproxy/regex.h>
Willy Tarreaue6ce10b2020-06-04 15:33:47 +020050#include <haproxy/sample.h>
Willy Tarreau198e92a2021-03-05 10:23:32 +010051#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +020052#include <haproxy/session.h>
Willy Tarreau2eec9b52020-06-04 19:58:55 +020053#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020054#include <haproxy/stream.h>
Willy Tarreau5e539c92020-06-04 20:45:39 +020055#include <haproxy/stream_interface.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +020056#include <haproxy/task.h>
Willy Tarreau8b550af2020-06-04 17:42:48 +020057#include <haproxy/tcp_rules.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020058#include <haproxy/thread.h>
Willy Tarreau48fbcae2020-06-03 18:09:46 +020059#include <haproxy/tools.h>
Willy Tarreaua1718922020-06-04 16:25:31 +020060#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020061#include <haproxy/xref.h>
62
Thierry FOURNIER380d0932015-01-23 14:27:52 +010063
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010064/* Lua uses longjmp to perform yield or throwing errors. This
65 * macro is used only for identifying the function that can
66 * not return because a longjmp is executed.
67 * __LJMP marks a prototype of hlua file that can use longjmp.
68 * WILL_LJMP() marks an lua function that will use longjmp.
69 * MAY_LJMP() marks an lua function that may use longjmp.
70 */
71#define __LJMP
Willy Tarreau4e7cc332018-10-20 17:45:48 +020072#define WILL_LJMP(func) do { func; my_unreachable(); } while(0)
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010073#define MAY_LJMP(func) func
74
Thierry FOURNIERbabae282015-09-17 11:36:37 +020075/* This couple of function executes securely some Lua calls outside of
76 * the lua runtime environment. Each Lua call can return a longjmp
77 * if it encounter a memory error.
78 *
79 * Lua documentation extract:
80 *
81 * If an error happens outside any protected environment, Lua calls
82 * a panic function (see lua_atpanic) and then calls abort, thus
83 * exiting the host application. Your panic function can avoid this
84 * exit by never returning (e.g., doing a long jump to your own
85 * recovery point outside Lua).
86 *
87 * The panic function runs as if it were a message handler (see
88 * §2.3); in particular, the error message is at the top of the
89 * stack. However, there is no guarantee about stack space. To push
90 * anything on the stack, the panic function must first check the
91 * available space (see §4.2).
92 *
93 * We must check all the Lua entry point. This includes:
94 * - The include/proto/hlua.h exported functions
95 * - the task wrapper function
96 * - The action wrapper function
97 * - The converters wrapper function
98 * - The sample-fetch wrapper functions
99 *
Ilya Shipitsin46a030c2020-07-05 16:36:08 +0500100 * It is tolerated that the initialisation function returns an abort.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800101 * Before each Lua abort, an error message is written on stderr.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200102 *
103 * The macro SET_SAFE_LJMP initialise the longjmp. The Macro
104 * RESET_SAFE_LJMP reset the longjmp. These function must be macro
105 * because they must be exists in the program stack when the longjmp
106 * is called.
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +0200107 *
108 * Note that the Lua processing is not really thread safe. It provides
109 * heavy system which consists to add our own lock function in the Lua
110 * code and recompile the library. This system will probably not accepted
111 * by maintainers of various distribs.
112 *
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500113 * Our main execution point of the Lua is the function lua_resume(). A
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +0200114 * quick looking on the Lua sources displays a lua_lock() a the start
115 * of function and a lua_unlock() at the end of the function. So I
116 * conclude that the Lua thread safe mode just perform a mutex around
117 * all execution. So I prefer to do this in the HAProxy code, it will be
118 * easier for distro maintainers.
119 *
120 * Note that the HAProxy lua functions rounded by the macro SET_SAFE_LJMP
121 * and RESET_SAFE_LJMP manipulates the Lua stack, so it will be careful
122 * to set mutex around these functions.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200123 */
Willy Tarreau86abe442018-11-25 20:12:18 +0100124__decl_spinlock(hlua_global_lock);
Thierry FOURNIERffbad792017-07-12 11:39:04 +0200125THREAD_LOCAL jmp_buf safe_ljmp_env;
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200126static int hlua_panic_safe(lua_State *L) { return 0; }
Willy Tarreau9d6bb5a2020-02-06 15:55:41 +0100127static int hlua_panic_ljmp(lua_State *L) { WILL_LJMP(longjmp(safe_ljmp_env, 1)); }
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200128
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100129/* This is the chained list of struct hlua_function referenced
130 * for haproxy action, sample-fetches, converters, cli and
131 * applet bindings. It is used for a post-initialisation control.
132 */
133static struct list referenced_functions = LIST_HEAD_INIT(referenced_functions);
134
Thierry Fournierc7492592020-11-28 23:57:24 +0100135/* This variable is used only during initialization to identify the Lua state
136 * currently being initialized. 0 is the common lua state, 1 to n are the Lua
137 * states dedicated to each thread (in this case hlua_state_id==tid+1).
138 */
139static int hlua_state_id;
140
Thierry Fournier59f11be2020-11-29 00:37:41 +0100141/* This is a NULL-terminated list of lua file which are referenced to load per thread */
142static char **per_thread_load = NULL;
143
144lua_State *hlua_init_state(int thread_id);
145
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100146#define SET_SAFE_LJMP_L(__L, __HLUA) \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200147 ({ \
148 int ret; \
Thierry Fournier021d9862020-11-28 23:42:03 +0100149 if ((__HLUA)->state_id == 0) \
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100150 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200151 if (setjmp(safe_ljmp_env) != 0) { \
152 lua_atpanic(__L, hlua_panic_safe); \
153 ret = 0; \
Thierry Fournier021d9862020-11-28 23:42:03 +0100154 if ((__HLUA)->state_id == 0) \
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100155 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200156 } else { \
157 lua_atpanic(__L, hlua_panic_ljmp); \
158 ret = 1; \
159 } \
160 ret; \
161 })
162
163/* If we are the last function catching Lua errors, we
164 * must reset the panic function.
165 */
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100166#define RESET_SAFE_LJMP_L(__L, __HLUA) \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200167 do { \
168 lua_atpanic(__L, hlua_panic_safe); \
Thierry Fournier021d9862020-11-28 23:42:03 +0100169 if ((__HLUA)->state_id == 0) \
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100170 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200171 } while(0)
172
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100173#define SET_SAFE_LJMP(__HLUA) \
174 SET_SAFE_LJMP_L((__HLUA)->T, __HLUA)
175
176#define RESET_SAFE_LJMP(__HLUA) \
177 RESET_SAFE_LJMP_L((__HLUA)->T, __HLUA)
178
179#define SET_SAFE_LJMP_PARENT(__HLUA) \
Thierry Fournier021d9862020-11-28 23:42:03 +0100180 SET_SAFE_LJMP_L(hlua_states[(__HLUA)->state_id], __HLUA)
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100181
182#define RESET_SAFE_LJMP_PARENT(__HLUA) \
Thierry Fournier021d9862020-11-28 23:42:03 +0100183 RESET_SAFE_LJMP_L(hlua_states[(__HLUA)->state_id], __HLUA)
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100184
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200185/* Applet status flags */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200186#define APPLET_DONE 0x01 /* applet processing is done. */
Christopher Faulet18c2e8d2019-03-01 12:02:08 +0100187/* unused: 0x02 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200188#define APPLET_HDR_SENT 0x04 /* Response header sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +0200189/* unused: 0x08, 0x10 */
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +0100190#define APPLET_HTTP11 0x20 /* Last chunk sent. */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +0100191#define APPLET_RSP_SENT 0x40 /* The response was fully sent */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200192
Thierry Fournierafc63e22020-11-28 17:06:51 +0100193/* The main Lua execution context. The 0 index is the
194 * common state shared by all threads.
195 */
Willy Tarreau186f3762020-12-04 11:48:12 +0100196static lua_State *hlua_states[MAX_THREADS + 1];
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100197
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100198/* This is the memory pool containing struct lua for applets
199 * (including cli).
200 */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100201DECLARE_STATIC_POOL(pool_head_hlua, "hlua", sizeof(struct hlua));
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100202
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100203/* Used for Socket connection. */
Amaury Denoyelle239fdbf2021-03-24 10:22:03 +0100204static struct proxy *socket_proxy;
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +0100205static struct server *socket_tcp;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100206#ifdef USE_OPENSSL
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +0100207static struct server *socket_ssl;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100208#endif
209
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100210/* List head of the function called at the initialisation time. */
Thierry Fournierc7492592020-11-28 23:57:24 +0100211struct list hlua_init_functions[MAX_THREADS + 1];
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100212
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100213/* The following variables contains the reference of the different
214 * Lua classes. These references are useful for identify metadata
215 * associated with an object.
216 */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100217static int class_txn_ref;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100218static int class_socket_ref;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +0100219static int class_channel_ref;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +0100220static int class_fetches_ref;
Thierry FOURNIER594afe72015-03-10 23:58:30 +0100221static int class_converters_ref;
Thierry FOURNIER08504f42015-03-16 14:17:08 +0100222static int class_http_ref;
Thierry FOURNIER3def3932015-04-07 11:27:54 +0200223static int class_map_ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200224static int class_applet_tcp_ref;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200225static int class_applet_http_ref;
Christopher Faulet700d9e82020-01-31 12:21:52 +0100226static int class_txn_reply_ref;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100227
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100228/* Global Lua execution timeout. By default Lua, execution linked
Willy Tarreau87b09662015-04-03 00:22:06 +0200229 * with stream (actions, sample-fetches and converters) have a
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100230 * short timeout. Lua linked with tasks doesn't have a timeout
231 * because a task may remain alive during all the haproxy execution.
232 */
233static unsigned int hlua_timeout_session = 4000; /* session timeout. */
234static unsigned int hlua_timeout_task = TICK_ETERNITY; /* task timeout. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200235static unsigned int hlua_timeout_applet = 4000; /* applet timeout. */
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100236
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100237/* Interrupts the Lua processing each "hlua_nb_instruction" instructions.
238 * it is used for preventing infinite loops.
239 *
240 * I test the scheer with an infinite loop containing one incrementation
241 * and one test. I run this loop between 10 seconds, I raise a ceil of
242 * 710M loops from one interrupt each 9000 instructions, so I fix the value
243 * to one interrupt each 10 000 instructions.
244 *
245 * configured | Number of
246 * instructions | loops executed
247 * between two | in milions
248 * forced yields |
249 * ---------------+---------------
250 * 10 | 160
251 * 500 | 670
252 * 1000 | 680
253 * 5000 | 700
254 * 7000 | 700
255 * 8000 | 700
256 * 9000 | 710 <- ceil
257 * 10000 | 710
258 * 100000 | 710
259 * 1000000 | 710
260 *
261 */
262static unsigned int hlua_nb_instruction = 10000;
263
Willy Tarreaucdb53462020-12-02 12:12:00 +0100264/* Descriptor for the memory allocation state. The limit is pre-initialised to
265 * 0 until it is replaced by "tune.lua.maxmem" during the config parsing, or it
266 * is replaced with ~0 during post_init after everything was loaded. This way
267 * it is guaranteed that if limit is ~0 the boot is complete and that if it's
268 * zero it's not yet limited and proper accounting is required.
Willy Tarreau32f61e22015-03-18 17:54:59 +0100269 */
270struct hlua_mem_allocator {
271 size_t allocated;
272 size_t limit;
273};
274
Willy Tarreaucdb53462020-12-02 12:12:00 +0100275static struct hlua_mem_allocator hlua_global_allocator THREAD_ALIGNED(64);
Willy Tarreau32f61e22015-03-18 17:54:59 +0100276
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100277/* These functions converts types between HAProxy internal args or
278 * sample and LUA types. Another function permits to check if the
279 * LUA stack contains arguments according with an required ARG_T
280 * format.
281 */
282static int hlua_arg2lua(lua_State *L, const struct arg *arg);
283static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100284__LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100285 uint64_t mask, struct proxy *p);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100286static int hlua_smp2lua(lua_State *L, struct sample *smp);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100287static int hlua_smp2lua_str(lua_State *L, struct sample *smp);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100288static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp);
289
Christopher Faulet9d1332b2020-02-24 16:46:16 +0100290__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200291
Thierry Fournier59f11be2020-11-29 00:37:41 +0100292struct prepend_path {
293 struct list l;
294 char *type;
295 char *path;
296};
297
298static struct list prepend_path_list = LIST_HEAD_INIT(prepend_path_list);
299
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200300#define SEND_ERR(__be, __fmt, __args...) \
301 do { \
302 send_log(__be, LOG_ERR, __fmt, ## __args); \
303 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) \
Christopher Faulet767a84b2017-11-24 16:50:31 +0100304 ha_alert(__fmt, ## __args); \
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200305 } while (0)
306
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100307static inline struct hlua_function *new_hlua_function()
308{
309 struct hlua_function *fcn;
Thierry Fournierc7492592020-11-28 23:57:24 +0100310 int i;
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100311
312 fcn = calloc(1, sizeof(*fcn));
313 if (!fcn)
314 return NULL;
315 LIST_ADDQ(&referenced_functions, &fcn->l);
Thierry Fournierc7492592020-11-28 23:57:24 +0100316 for (i = 0; i < MAX_THREADS + 1; i++)
317 fcn->function_ref[i] = -1;
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100318 return fcn;
319}
320
Thierry Fournierc7492592020-11-28 23:57:24 +0100321/* If the common state is set, the stack id is 0, otherwise it is the tid + 1 */
322static inline int fcn_ref_to_stack_id(struct hlua_function *fcn)
323{
324 if (fcn->function_ref[0] == -1)
325 return tid + 1;
326 return 0;
327}
328
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100329/* Used to check an Lua function type in the stack. It creates and
330 * returns a reference of the function. This function throws an
331 * error if the rgument is not a "function".
332 */
333__LJMP unsigned int hlua_checkfunction(lua_State *L, int argno)
334{
335 if (!lua_isfunction(L, argno)) {
Thierry FOURNIERfd1e9552018-02-23 18:41:18 +0100336 const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, argno));
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100337 WILL_LJMP(luaL_argerror(L, argno, msg));
338 }
339 lua_pushvalue(L, argno);
340 return luaL_ref(L, LUA_REGISTRYINDEX);
341}
342
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200343/* Return the string that is of the top of the stack. */
344const char *hlua_get_top_error_string(lua_State *L)
345{
346 if (lua_gettop(L) < 1)
347 return "unknown error";
348 if (lua_type(L, -1) != LUA_TSTRING)
349 return "unknown error";
350 return lua_tostring(L, -1);
351}
352
Christopher Fauletd09cc512021-03-24 14:48:45 +0100353__LJMP const char *hlua_traceback(lua_State *L, const char* sep)
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200354{
355 lua_Debug ar;
356 int level = 0;
Willy Tarreau83061a82018-07-13 11:56:34 +0200357 struct buffer *msg = get_trash_chunk();
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200358
359 while (lua_getstack(L, level++, &ar)) {
360
361 /* Add separator */
Christopher Fauletd09cc512021-03-24 14:48:45 +0100362 if (b_data(msg))
363 chunk_appendf(msg, "%s", sep);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200364
365 /* Fill fields:
366 * 'S': fills in the fields source, short_src, linedefined, lastlinedefined, and what;
367 * 'l': fills in the field currentline;
368 * 'n': fills in the field name and namewhat;
369 * 't': fills in the field istailcall;
370 */
371 lua_getinfo(L, "Slnt", &ar);
372
373 /* Append code localisation */
374 if (ar.currentline > 0)
Christopher Fauletd09cc512021-03-24 14:48:45 +0100375 chunk_appendf(msg, "%s:%d: ", ar.short_src, ar.currentline);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200376 else
Christopher Fauletd09cc512021-03-24 14:48:45 +0100377 chunk_appendf(msg, "%s: ", ar.short_src);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200378
379 /*
380 * Get function name
381 *
382 * if namewhat is no empty, name is defined.
383 * what contains "Lua" for Lua function, "C" for C function,
384 * or "main" for main code.
385 */
386 if (*ar.namewhat != '\0' && ar.name != NULL) /* is there a name from code? */
Christopher Fauletd09cc512021-03-24 14:48:45 +0100387 chunk_appendf(msg, "in %s '%s'", ar.namewhat, ar.name); /* use it */
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200388
389 else if (*ar.what == 'm') /* "main", the code is not executed in a function */
Christopher Fauletd09cc512021-03-24 14:48:45 +0100390 chunk_appendf(msg, "in main chunk");
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200391
392 else if (*ar.what != 'C') /* for Lua functions, use <file:line> */
Christopher Fauletd09cc512021-03-24 14:48:45 +0100393 chunk_appendf(msg, "in function line %d", ar.linedefined);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200394
395 else /* nothing left... */
396 chunk_appendf(msg, "?");
397
398
399 /* Display tailed call */
400 if (ar.istailcall)
401 chunk_appendf(msg, " ...");
402 }
403
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200404 return msg->area;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200405}
406
407
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100408/* This function check the number of arguments available in the
409 * stack. If the number of arguments available is not the same
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500410 * then <nb> an error is thrown.
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100411 */
412__LJMP static inline void check_args(lua_State *L, int nb, char *fcn)
413{
414 if (lua_gettop(L) == nb)
415 return;
416 WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb));
417}
418
Mark Lakes22154b42018-01-29 14:38:40 -0800419/* This function pushes an error string prefixed by the file name
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100420 * and the line number where the error is encountered.
421 */
422static int hlua_pusherror(lua_State *L, const char *fmt, ...)
423{
424 va_list argp;
425 va_start(argp, fmt);
426 luaL_where(L, 1);
427 lua_pushvfstring(L, fmt, argp);
428 va_end(argp);
429 lua_concat(L, 2);
430 return 1;
431}
432
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100433/* This functions is used with sample fetch and converters. It
434 * converts the HAProxy configuration argument in a lua stack
435 * values.
436 *
437 * It takes an array of "arg", and each entry of the array is
438 * converted and pushed in the LUA stack.
439 */
440static int hlua_arg2lua(lua_State *L, const struct arg *arg)
441{
442 switch (arg->type) {
443 case ARGT_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100444 case ARGT_TIME:
445 case ARGT_SIZE:
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100446 lua_pushinteger(L, arg->data.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100447 break;
448
449 case ARGT_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200450 lua_pushlstring(L, arg->data.str.area, arg->data.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100451 break;
452
453 case ARGT_IPV4:
454 case ARGT_IPV6:
455 case ARGT_MSK4:
456 case ARGT_MSK6:
457 case ARGT_FE:
458 case ARGT_BE:
459 case ARGT_TAB:
460 case ARGT_SRV:
461 case ARGT_USR:
462 case ARGT_MAP:
463 default:
464 lua_pushnil(L);
465 break;
466 }
467 return 1;
468}
469
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500470/* This function take one entry in an LUA stack at the index "ud",
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100471 * and try to convert it in an HAProxy argument entry. This is useful
Ilya Shipitsind4259502020-04-08 01:07:56 +0500472 * with sample fetch wrappers. The input arguments are given to the
473 * lua wrapper and converted as arg list by the function.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100474 */
475static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg)
476{
477 switch (lua_type(L, ud)) {
478
479 case LUA_TNUMBER:
480 case LUA_TBOOLEAN:
481 arg->type = ARGT_SINT;
482 arg->data.sint = lua_tointeger(L, ud);
483 break;
484
485 case LUA_TSTRING:
486 arg->type = ARGT_STR;
Tim Duesterhus2e89dec2019-09-29 23:03:08 +0200487 arg->data.str.area = (char *)lua_tolstring(L, ud, &arg->data.str.data);
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200488 /* We don't know the actual size of the underlying allocation, so be conservative. */
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200489 arg->data.str.size = arg->data.str.data+1; /* count the terminating null byte */
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200490 arg->data.str.head = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100491 break;
492
493 case LUA_TUSERDATA:
494 case LUA_TNIL:
495 case LUA_TTABLE:
496 case LUA_TFUNCTION:
497 case LUA_TTHREAD:
498 case LUA_TLIGHTUSERDATA:
499 arg->type = ARGT_SINT;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200500 arg->data.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100501 break;
502 }
503 return 1;
504}
505
506/* the following functions are used to convert a struct sample
507 * in Lua type. This useful to convert the return of the
Ilya Shipitsind4259502020-04-08 01:07:56 +0500508 * fetches or converters.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100509 */
Willy Tarreau5eadada2015-03-10 17:28:54 +0100510static int hlua_smp2lua(lua_State *L, struct sample *smp)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100511{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200512 switch (smp->data.type) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100513 case SMP_T_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100514 case SMP_T_BOOL:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200515 lua_pushinteger(L, smp->data.u.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100516 break;
517
518 case SMP_T_BIN:
519 case SMP_T_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200520 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100521 break;
522
523 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200524 switch (smp->data.u.meth.meth) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100525 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
526 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
527 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
528 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
529 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
530 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
531 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
532 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
533 case HTTP_METH_OTHER:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200534 lua_pushlstring(L, smp->data.u.meth.str.area, smp->data.u.meth.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100535 break;
536 default:
537 lua_pushnil(L);
538 break;
539 }
540 break;
541
542 case SMP_T_IPV4:
543 case SMP_T_IPV6:
544 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200545 if (sample_casts[smp->data.type][SMP_T_STR] &&
546 sample_casts[smp->data.type][SMP_T_STR](smp))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200547 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100548 else
549 lua_pushnil(L);
550 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100551 default:
552 lua_pushnil(L);
553 break;
554 }
555 return 1;
556}
557
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100558/* the following functions are used to convert a struct sample
559 * in Lua strings. This is useful to convert the return of the
Ilya Shipitsind4259502020-04-08 01:07:56 +0500560 * fetches or converters.
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100561 */
562static int hlua_smp2lua_str(lua_State *L, struct sample *smp)
563{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200564 switch (smp->data.type) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100565
566 case SMP_T_BIN:
567 case SMP_T_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200568 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100569 break;
570
571 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200572 switch (smp->data.u.meth.meth) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100573 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
574 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
575 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
576 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
577 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
578 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
579 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
580 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
581 case HTTP_METH_OTHER:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200582 lua_pushlstring(L, smp->data.u.meth.str.area, smp->data.u.meth.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100583 break;
584 default:
585 lua_pushstring(L, "");
586 break;
587 }
588 break;
589
590 case SMP_T_SINT:
591 case SMP_T_BOOL:
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100592 case SMP_T_IPV4:
593 case SMP_T_IPV6:
594 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200595 if (sample_casts[smp->data.type][SMP_T_STR] &&
596 sample_casts[smp->data.type][SMP_T_STR](smp))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200597 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100598 else
599 lua_pushstring(L, "");
600 break;
601 default:
602 lua_pushstring(L, "");
603 break;
604 }
605 return 1;
606}
607
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100608/* the following functions are used to convert an Lua type in a
609 * struct sample. This is useful to provide data from a converter
610 * to the LUA code.
611 */
612static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp)
613{
614 switch (lua_type(L, ud)) {
615
616 case LUA_TNUMBER:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200617 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200618 smp->data.u.sint = lua_tointeger(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100619 break;
620
621
622 case LUA_TBOOLEAN:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200623 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200624 smp->data.u.sint = lua_toboolean(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100625 break;
626
627 case LUA_TSTRING:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200628 smp->data.type = SMP_T_STR;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100629 smp->flags |= SMP_F_CONST;
Tim Duesterhus2e89dec2019-09-29 23:03:08 +0200630 smp->data.u.str.area = (char *)lua_tolstring(L, ud, &smp->data.u.str.data);
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200631 /* We don't know the actual size of the underlying allocation, so be conservative. */
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200632 smp->data.u.str.size = smp->data.u.str.data+1; /* count the terminating null byte */
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200633 smp->data.u.str.head = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100634 break;
635
636 case LUA_TUSERDATA:
637 case LUA_TNIL:
638 case LUA_TTABLE:
639 case LUA_TFUNCTION:
640 case LUA_TTHREAD:
641 case LUA_TLIGHTUSERDATA:
Thierry FOURNIER93405e12015-08-26 14:19:03 +0200642 case LUA_TNONE:
643 default:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200644 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200645 smp->data.u.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100646 break;
647 }
648 return 1;
649}
650
Ilya Shipitsind4259502020-04-08 01:07:56 +0500651/* This function check the "argp" built by another conversion function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800652 * is in accord with the expected argp defined by the "mask". The function
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100653 * returns true or false. It can be adjust the types if there compatibles.
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100654 *
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500655 * This function assumes that the argp argument contains ARGM_NBARGS + 1
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100656 * entries.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100657 */
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100658__LJMP int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100659 uint64_t mask, struct proxy *p)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100660{
661 int min_arg;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200662 int i, idx;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100663 struct proxy *px;
Christopher Fauletd25d9262020-08-06 11:04:46 +0200664 struct userlist *ul;
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200665 struct my_regex *reg;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200666 const char *msg = NULL;
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200667 char *sname, *pname, *err = NULL;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100668
669 idx = 0;
670 min_arg = ARGM(mask);
671 mask >>= ARGM_BITS;
672
673 while (1) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200674 struct buffer tmp = BUF_NULL;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100675
676 /* Check oversize. */
677 if (idx >= ARGM_NBARGS && argp[idx].type != ARGT_STOP) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200678 msg = "Malformed argument mask";
679 goto error;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100680 }
681
682 /* Check for mandatory arguments. */
683 if (argp[idx].type == ARGT_STOP) {
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100684 if (idx < min_arg) {
685
686 /* If miss other argument than the first one, we return an error. */
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200687 if (idx > 0) {
688 msg = "Mandatory argument expected";
689 goto error;
690 }
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100691
692 /* If first argument have a certain type, some default values
693 * may be used. See the function smp_resolve_args().
694 */
695 switch (mask & ARGT_MASK) {
696
697 case ARGT_FE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200698 if (!(p->cap & PR_CAP_FE)) {
699 msg = "Mandatory argument expected";
700 goto error;
701 }
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100702 argp[idx].data.prx = p;
703 argp[idx].type = ARGT_FE;
704 argp[idx+1].type = ARGT_STOP;
705 break;
706
707 case ARGT_BE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200708 if (!(p->cap & PR_CAP_BE)) {
709 msg = "Mandatory argument expected";
710 goto error;
711 }
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100712 argp[idx].data.prx = p;
713 argp[idx].type = ARGT_BE;
714 argp[idx+1].type = ARGT_STOP;
715 break;
716
717 case ARGT_TAB:
718 argp[idx].data.prx = p;
719 argp[idx].type = ARGT_TAB;
720 argp[idx+1].type = ARGT_STOP;
721 break;
722
723 default:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200724 msg = "Mandatory argument expected";
725 goto error;
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100726 break;
727 }
728 }
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200729 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100730 }
731
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500732 /* Check for exceed the number of required argument. */
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100733 if ((mask & ARGT_MASK) == ARGT_STOP &&
734 argp[idx].type != ARGT_STOP) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200735 msg = "Last argument expected";
736 goto error;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100737 }
738
739 if ((mask & ARGT_MASK) == ARGT_STOP &&
740 argp[idx].type == ARGT_STOP) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200741 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100742 }
743
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200744 /* Convert some argument types. All string in argp[] are for not
745 * duplicated yet.
746 */
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100747 switch (mask & ARGT_MASK) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100748 case ARGT_SINT:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200749 if (argp[idx].type != ARGT_SINT) {
750 msg = "integer expected";
751 goto error;
752 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100753 argp[idx].type = ARGT_SINT;
754 break;
755
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100756 case ARGT_TIME:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200757 if (argp[idx].type != ARGT_SINT) {
758 msg = "integer expected";
759 goto error;
760 }
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200761 argp[idx].type = ARGT_TIME;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100762 break;
763
764 case ARGT_SIZE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200765 if (argp[idx].type != ARGT_SINT) {
766 msg = "integer expected";
767 goto error;
768 }
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200769 argp[idx].type = ARGT_SIZE;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100770 break;
771
772 case ARGT_FE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200773 if (argp[idx].type != ARGT_STR) {
774 msg = "string expected";
775 goto error;
776 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200777 argp[idx].data.prx = proxy_fe_by_name(argp[idx].data.str.area);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200778 if (!argp[idx].data.prx) {
779 msg = "frontend doesn't exist";
780 goto error;
781 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100782 argp[idx].type = ARGT_FE;
783 break;
784
785 case ARGT_BE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200786 if (argp[idx].type != ARGT_STR) {
787 msg = "string expected";
788 goto error;
789 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200790 argp[idx].data.prx = proxy_be_by_name(argp[idx].data.str.area);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200791 if (!argp[idx].data.prx) {
792 msg = "backend doesn't exist";
793 goto error;
794 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100795 argp[idx].type = ARGT_BE;
796 break;
797
798 case ARGT_TAB:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200799 if (argp[idx].type != ARGT_STR) {
800 msg = "string expected";
801 goto error;
802 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200803 argp[idx].data.t = stktable_find_by_name(argp[idx].data.str.area);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200804 if (!argp[idx].data.t) {
805 msg = "table doesn't exist";
806 goto error;
807 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100808 argp[idx].type = ARGT_TAB;
809 break;
810
811 case ARGT_SRV:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200812 if (argp[idx].type != ARGT_STR) {
813 msg = "string expected";
814 goto error;
815 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200816 sname = strrchr(argp[idx].data.str.area, '/');
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100817 if (sname) {
818 *sname++ = '\0';
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200819 pname = argp[idx].data.str.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200820 px = proxy_be_by_name(pname);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200821 if (!px) {
822 msg = "backend doesn't exist";
823 goto error;
824 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100825 }
826 else {
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200827 sname = argp[idx].data.str.area;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100828 px = p;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100829 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100830 argp[idx].data.srv = findserver(px, sname);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200831 if (!argp[idx].data.srv) {
832 msg = "server doesn't exist";
833 goto error;
834 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100835 argp[idx].type = ARGT_SRV;
836 break;
837
838 case ARGT_IPV4:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200839 if (argp[idx].type != ARGT_STR) {
840 msg = "string expected";
841 goto error;
842 }
843 if (inet_pton(AF_INET, argp[idx].data.str.area, &argp[idx].data.ipv4)) {
844 msg = "invalid IPv4 address";
845 goto error;
846 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100847 argp[idx].type = ARGT_IPV4;
848 break;
849
850 case ARGT_MSK4:
Christopher Faulete663a6e2020-08-07 09:11:22 +0200851 if (argp[idx].type == ARGT_SINT)
852 len2mask4(argp[idx].data.sint, &argp[idx].data.ipv4);
853 else if (argp[idx].type == ARGT_STR) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200854 if (!str2mask(argp[idx].data.str.area, &argp[idx].data.ipv4)) {
855 msg = "invalid IPv4 mask";
856 goto error;
857 }
858 }
859 else {
860 msg = "integer or string expected";
861 goto error;
Christopher Faulete663a6e2020-08-07 09:11:22 +0200862 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100863 argp[idx].type = ARGT_MSK4;
864 break;
865
866 case ARGT_IPV6:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200867 if (argp[idx].type != ARGT_STR) {
868 msg = "string expected";
869 goto error;
870 }
871 if (inet_pton(AF_INET6, argp[idx].data.str.area, &argp[idx].data.ipv6)) {
872 msg = "invalid IPv6 address";
873 goto error;
874 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100875 argp[idx].type = ARGT_IPV6;
876 break;
877
878 case ARGT_MSK6:
Christopher Faulete663a6e2020-08-07 09:11:22 +0200879 if (argp[idx].type == ARGT_SINT)
880 len2mask6(argp[idx].data.sint, &argp[idx].data.ipv6);
881 else if (argp[idx].type == ARGT_STR) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200882 if (!str2mask6(argp[idx].data.str.area, &argp[idx].data.ipv6)) {
883 msg = "invalid IPv6 mask";
884 goto error;
885 }
886 }
887 else {
888 msg = "integer or string expected";
889 goto error;
Christopher Faulete663a6e2020-08-07 09:11:22 +0200890 }
Tim Duesterhusb814da62018-01-25 16:24:50 +0100891 argp[idx].type = ARGT_MSK6;
892 break;
893
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200894 case ARGT_REG:
895 if (argp[idx].type != ARGT_STR) {
896 msg = "string expected";
897 goto error;
898 }
899 reg = regex_comp(argp[idx].data.str.area, !(argp[idx].type_flags & ARGF_REG_ICASE), 1, &err);
900 if (!reg) {
901 msg = lua_pushfstring(L, "error compiling regex '%s' : '%s'",
902 argp[idx].data.str.area, err);
903 free(err);
904 goto error;
905 }
906 argp[idx].type = ARGT_REG;
907 argp[idx].data.reg = reg;
908 break;
909
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100910 case ARGT_USR:
Christopher Fauletd25d9262020-08-06 11:04:46 +0200911 if (argp[idx].type != ARGT_STR) {
912 msg = "string expected";
913 goto error;
914 }
915 if (p->uri_auth && p->uri_auth->userlist &&
Tim Duesterhuse5ff1412021-01-02 22:31:53 +0100916 strcmp(p->uri_auth->userlist->name, argp[idx].data.str.area) == 0)
Christopher Fauletd25d9262020-08-06 11:04:46 +0200917 ul = p->uri_auth->userlist;
918 else
919 ul = auth_find_userlist(argp[idx].data.str.area);
920
921 if (!ul) {
922 msg = lua_pushfstring(L, "unable to find userlist '%s'", argp[idx].data.str.area);
923 goto error;
924 }
925 argp[idx].type = ARGT_USR;
926 argp[idx].data.usr = ul;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200927 break;
928
929 case ARGT_STR:
930 if (!chunk_dup(&tmp, &argp[idx].data.str)) {
931 msg = "unable to duplicate string arg";
932 goto error;
933 }
934 argp[idx].data.str = tmp;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100935 break;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200936
Christopher Fauletd25d9262020-08-06 11:04:46 +0200937 case ARGT_MAP:
Christopher Fauletd25d9262020-08-06 11:04:46 +0200938 msg = "type not yet supported";
939 goto error;
940 break;
941
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100942 }
943
944 /* Check for type of argument. */
945 if ((mask & ARGT_MASK) != argp[idx].type) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200946 msg = lua_pushfstring(L, "'%s' expected, got '%s'",
947 arg_type_names[(mask & ARGT_MASK)],
948 arg_type_names[argp[idx].type & ARGT_MASK]);
949 goto error;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100950 }
951
952 /* Next argument. */
953 mask >>= ARGT_BITS;
954 idx++;
955 }
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200956 return 0;
957
958 error:
959 for (i = 0; i < idx; i++) {
960 if (argp[i].type == ARGT_STR)
961 chunk_destroy(&argp[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200962 else if (argp[i].type == ARGT_REG)
963 regex_free(argp[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200964 }
965 WILL_LJMP(luaL_argerror(L, first + idx, msg));
966 return 0; /* Never reached */
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100967}
968
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100969/*
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500970 * The following functions are used to make correspondence between the the
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100971 * executed lua pointer and the "struct hlua *" that contain the context.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100972 *
973 * - hlua_gethlua : return the hlua context associated with an lua_State.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100974 * - hlua_sethlua : create the association between hlua context and lua_state.
975 */
976static inline struct hlua *hlua_gethlua(lua_State *L)
977{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100978 struct hlua **hlua = lua_getextraspace(L);
979 return *hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100980}
981static inline void hlua_sethlua(struct hlua *hlua)
982{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100983 struct hlua **hlua_store = lua_getextraspace(hlua->T);
984 *hlua_store = hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100985}
986
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100987/* This function is used to send logs. It try to send on screen (stderr)
988 * and on the default syslog server.
989 */
990static inline void hlua_sendlog(struct proxy *px, int level, const char *msg)
991{
992 struct tm tm;
993 char *p;
994
995 /* Cleanup the log message. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200996 p = trash.area;
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100997 for (; *msg != '\0'; msg++, p++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200998 if (p >= trash.area + trash.size - 1) {
Thierry FOURNIERccf00632015-09-16 12:47:03 +0200999 /* Break the message if exceed the buffer size. */
1000 *(p-4) = ' ';
1001 *(p-3) = '.';
1002 *(p-2) = '.';
1003 *(p-1) = '.';
1004 break;
1005 }
Willy Tarreau90807112020-02-25 08:16:33 +01001006 if (isprint((unsigned char)*msg))
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01001007 *p = *msg;
1008 else
1009 *p = '.';
1010 }
1011 *p = '\0';
1012
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001013 send_log(px, level, "%s\n", trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01001014 if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
Christopher Fauletf98d8212020-10-02 18:13:52 +02001015 if (level == LOG_DEBUG && !(global.mode & MODE_DEBUG))
1016 return;
1017
Willy Tarreaua678b432015-08-28 10:14:59 +02001018 get_localtime(date.tv_sec, &tm);
1019 fprintf(stderr, "[%s] %03d/%02d%02d%02d (%d) : %s\n",
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01001020 log_levels[level], tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec,
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001021 (int)getpid(), trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01001022 fflush(stderr);
1023 }
1024}
1025
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001026/* This function just ensure that the yield will be always
1027 * returned with a timeout and permit to set some flags
1028 */
1029__LJMP void hlua_yieldk(lua_State *L, int nresults, int ctx,
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001030 lua_KFunction k, int timeout, unsigned int flags)
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001031{
Thierry Fournier4234dbd2020-11-28 13:18:23 +01001032 struct hlua *hlua;
1033
1034 /* Get hlua struct, or NULL if we execute from main lua state */
1035 hlua = hlua_gethlua(L);
1036 if (!hlua) {
1037 return;
1038 }
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001039
1040 /* Set the wake timeout. If timeout is required, we set
1041 * the expiration time.
1042 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001043 hlua->wake_time = timeout;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001044
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +01001045 hlua->flags |= flags;
1046
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001047 /* Process the yield. */
Willy Tarreau9635e032018-10-16 17:52:55 +02001048 MAY_LJMP(lua_yieldk(L, nresults, ctx, k));
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001049}
1050
Willy Tarreau87b09662015-04-03 00:22:06 +02001051/* This function initialises the Lua environment stored in the stream.
1052 * It must be called at the start of the stream. This function creates
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001053 * an LUA coroutine. It can not be use to crete the main LUA context.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02001054 *
1055 * This function is particular. it initialises a new Lua thread. If the
1056 * initialisation fails (example: out of memory error), the lua function
1057 * throws an error (longjmp).
1058 *
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001059 * In some case (at least one), this function can be called from safe
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001060 * environment, so we must not initialise it. While the support of
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001061 * threads appear, the safe environment set a lock to ensure only one
1062 * Lua execution at a time. If we initialize safe environment in another
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001063 * safe environment, we have a dead lock.
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001064 *
1065 * set "already_safe" true if the context is initialized form safe
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001066 * Lua function.
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001067 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001068 * This function manipulates two Lua stacks: the main and the thread. Only
Thierry FOURNIERbabae282015-09-17 11:36:37 +02001069 * the main stack can fail. The thread is not manipulated. This function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001070 * MUST NOT manipulate the created thread stack state, because it is not
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001071 * protected against errors thrown by the thread stack.
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001072 */
Thierry Fournier021d9862020-11-28 23:42:03 +01001073int hlua_ctx_init(struct hlua *lua, int state_id, struct task *task, int already_safe)
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001074{
1075 lua->Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001076 lua->flags = 0;
Willy Tarreauf31af932020-01-14 09:59:38 +01001077 lua->gc_count = 0;
Christopher Fauletbc275a92020-02-26 14:55:16 +01001078 lua->wake_time = TICK_ETERNITY;
Thierry Fournier021d9862020-11-28 23:42:03 +01001079 lua->state_id = state_id;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001080 LIST_INIT(&lua->com);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001081 if (!already_safe) {
1082 if (!SET_SAFE_LJMP_PARENT(lua)) {
1083 lua->Tref = LUA_REFNIL;
1084 return 0;
1085 }
1086 }
Thierry Fournier021d9862020-11-28 23:42:03 +01001087 lua->T = lua_newthread(hlua_states[state_id]);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001088 if (!lua->T) {
1089 lua->Tref = LUA_REFNIL;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001090 if (!already_safe)
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001091 RESET_SAFE_LJMP_PARENT(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001092 return 0;
1093 }
1094 hlua_sethlua(lua);
Thierry Fournier021d9862020-11-28 23:42:03 +01001095 lua->Tref = luaL_ref(hlua_states[state_id], LUA_REGISTRYINDEX);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001096 lua->task = task;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001097 if (!already_safe)
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001098 RESET_SAFE_LJMP_PARENT(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001099 return 1;
1100}
1101
Willy Tarreau87b09662015-04-03 00:22:06 +02001102/* Used to destroy the Lua coroutine when the attached stream or task
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001103 * is destroyed. The destroy also the memory context. The struct "lua"
1104 * is not freed.
1105 */
1106void hlua_ctx_destroy(struct hlua *lua)
1107{
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001108 if (!lua)
Thierry FOURNIERa718b292015-03-04 16:48:34 +01001109 return;
1110
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001111 if (!lua->T)
1112 goto end;
1113
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001114 /* Purge all the pending signals. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001115 notification_purge(&lua->com);
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001116
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001117 if (!SET_SAFE_LJMP(lua))
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001118 return;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001119 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001120 RESET_SAFE_LJMP(lua);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001121
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001122 if (!SET_SAFE_LJMP_PARENT(lua))
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001123 return;
Thierry Fournier021d9862020-11-28 23:42:03 +01001124 luaL_unref(hlua_states[lua->state_id], LUA_REGISTRYINDEX, lua->Tref);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001125 RESET_SAFE_LJMP_PARENT(lua);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001126 /* Forces a garbage collecting process. If the Lua program is finished
1127 * without error, we run the GC on the thread pointer. Its freed all
1128 * the unused memory.
1129 * If the thread is finnish with an error or is currently yielded,
1130 * it seems that the GC applied on the thread doesn't clean anything,
1131 * so e run the GC on the main thread.
1132 * NOTE: maybe this action locks all the Lua threads untiml the en of
1133 * the garbage collection.
1134 */
Willy Tarreauf31af932020-01-14 09:59:38 +01001135 if (lua->gc_count) {
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001136 if (!SET_SAFE_LJMP_PARENT(lua))
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001137 return;
Thierry Fournier021d9862020-11-28 23:42:03 +01001138 lua_gc(hlua_states[lua->state_id], LUA_GCCOLLECT, 0);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001139 RESET_SAFE_LJMP_PARENT(lua);
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02001140 }
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001141
Thierry FOURNIERa7b536b2015-09-21 22:50:24 +02001142 lua->T = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001143
1144end:
Willy Tarreaubafbe012017-11-24 17:34:44 +01001145 pool_free(pool_head_hlua, lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001146}
1147
1148/* This function is used to restore the Lua context when a coroutine
1149 * fails. This function copy the common memory between old coroutine
1150 * and the new coroutine. The old coroutine is destroyed, and its
1151 * replaced by the new coroutine.
1152 * If the flag "keep_msg" is set, the last entry of the old is assumed
1153 * as string error message and it is copied in the new stack.
1154 */
1155static int hlua_ctx_renew(struct hlua *lua, int keep_msg)
1156{
1157 lua_State *T;
1158 int new_ref;
1159
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001160 /* New Lua coroutine. */
Thierry Fournier021d9862020-11-28 23:42:03 +01001161 T = lua_newthread(hlua_states[lua->state_id]);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001162 if (!T)
1163 return 0;
1164
1165 /* Copy last error message. */
1166 if (keep_msg)
1167 lua_xmove(lua->T, T, 1);
1168
1169 /* Copy data between the coroutines. */
1170 lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1171 lua_xmove(lua->T, T, 1);
Ilya Shipitsin46a030c2020-07-05 16:36:08 +05001172 new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Value popped. */
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001173
1174 /* Destroy old data. */
1175 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1176
1177 /* The thread is garbage collected by Lua. */
Thierry Fournier021d9862020-11-28 23:42:03 +01001178 luaL_unref(hlua_states[lua->state_id], LUA_REGISTRYINDEX, lua->Tref);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001179
1180 /* Fill the struct with the new coroutine values. */
1181 lua->Mref = new_ref;
1182 lua->T = T;
Thierry Fournier021d9862020-11-28 23:42:03 +01001183 lua->Tref = luaL_ref(hlua_states[lua->state_id], LUA_REGISTRYINDEX);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001184
1185 /* Set context. */
1186 hlua_sethlua(lua);
1187
1188 return 1;
1189}
1190
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001191void hlua_hook(lua_State *L, lua_Debug *ar)
1192{
Thierry Fournier4234dbd2020-11-28 13:18:23 +01001193 struct hlua *hlua;
1194
1195 /* Get hlua struct, or NULL if we execute from main lua state */
1196 hlua = hlua_gethlua(L);
1197 if (!hlua)
1198 return;
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001199
1200 /* Lua cannot yield when its returning from a function,
1201 * so, we can fix the interrupt hook to 1 instruction,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001202 * expecting that the function is finished.
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001203 */
1204 if (lua_gethookmask(L) & LUA_MASKRET) {
1205 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, 1);
1206 return;
1207 }
1208
1209 /* restore the interrupt condition. */
1210 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1211
1212 /* If we interrupt the Lua processing in yieldable state, we yield.
1213 * If the state is not yieldable, trying yield causes an error.
1214 */
1215 if (lua_isyieldable(L))
Willy Tarreau9635e032018-10-16 17:52:55 +02001216 MAY_LJMP(hlua_yieldk(L, 0, 0, NULL, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001217
Thierry FOURNIERa85cfb12015-03-13 14:50:06 +01001218 /* If we cannot yield, update the clock and check the timeout. */
1219 tv_update_date(0, 1);
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001220 hlua->run_time += now_ms - hlua->start_time;
1221 if (hlua->max_time && hlua->run_time >= hlua->max_time) {
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001222 lua_pushfstring(L, "execution timeout");
1223 WILL_LJMP(lua_error(L));
1224 }
1225
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001226 /* Update the start time. */
1227 hlua->start_time = now_ms;
1228
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001229 /* Try to interrupt the process at the end of the current
1230 * unyieldable function.
1231 */
1232 lua_sethook(hlua->T, hlua_hook, LUA_MASKRET|LUA_MASKCOUNT, hlua_nb_instruction);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001233}
1234
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001235/* This function start or resumes the Lua stack execution. If the flag
1236 * "yield_allowed" if no set and the LUA stack execution returns a yield
1237 * The function return an error.
1238 *
1239 * The function can returns 4 values:
1240 * - HLUA_E_OK : The execution is terminated without any errors.
1241 * - HLUA_E_AGAIN : The execution must continue at the next associated
1242 * task wakeup.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001243 * - HLUA_E_ERRMSG : An error has occurred, an error message is set in
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001244 * the top of the stack.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001245 * - HLUA_E_ERR : An error has occurred without error message.
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001246 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001247 * If an error occurred, the stack is renewed and it is ready to run new
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001248 * LUA code.
1249 */
1250static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed)
1251{
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001252#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
1253 int nres;
1254#endif
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001255 int ret;
1256 const char *msg;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001257 const char *trace;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001258
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001259 /* Initialise run time counter. */
1260 if (!HLUA_IS_RUNNING(lua))
1261 lua->run_time = 0;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001262
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001263 /* Lock the whole Lua execution. This lock must be before the
1264 * label "resume_execution".
1265 */
Thierry Fournier021d9862020-11-28 23:42:03 +01001266 if (lua->state_id == 0)
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001267 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001268
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001269resume_execution:
1270
1271 /* This hook interrupts the Lua processing each 'hlua_nb_instruction'
1272 * instructions. it is used for preventing infinite loops.
1273 */
1274 lua_sethook(lua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1275
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001276 /* Remove all flags except the running flags. */
Thierry FOURNIER2f3867f2015-09-28 01:02:01 +02001277 HLUA_SET_RUN(lua);
1278 HLUA_CLR_CTRLYIELD(lua);
1279 HLUA_CLR_WAKERESWR(lua);
1280 HLUA_CLR_WAKEREQWR(lua);
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001281
Christopher Fauletbc275a92020-02-26 14:55:16 +01001282 /* Update the start time and reset wake_time. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001283 lua->start_time = now_ms;
Christopher Fauletbc275a92020-02-26 14:55:16 +01001284 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001285
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001286 /* Call the function. */
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001287#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
Thierry Fournier021d9862020-11-28 23:42:03 +01001288 ret = lua_resume(lua->T, hlua_states[lua->state_id], lua->nargs, &nres);
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001289#else
Thierry Fournier021d9862020-11-28 23:42:03 +01001290 ret = lua_resume(lua->T, hlua_states[lua->state_id], lua->nargs);
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001291#endif
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001292 switch (ret) {
1293
1294 case LUA_OK:
1295 ret = HLUA_E_OK;
1296 break;
1297
1298 case LUA_YIELD:
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001299 /* Check if the execution timeout is expired. It it is the case, we
1300 * break the Lua execution.
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001301 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001302 tv_update_date(0, 1);
1303 lua->run_time += now_ms - lua->start_time;
1304 if (lua->max_time && lua->run_time > lua->max_time) {
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001305 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001306 ret = HLUA_E_ETMOUT;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001307 break;
1308 }
1309 /* Process the forced yield. if the general yield is not allowed or
1310 * if no task were associated this the current Lua execution
1311 * coroutine, we resume the execution. Else we want to return in the
1312 * scheduler and we want to be waked up again, to continue the
1313 * current Lua execution. So we schedule our own task.
1314 */
1315 if (HLUA_IS_CTRLYIELDING(lua)) {
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001316 if (!yield_allowed || !lua->task)
1317 goto resume_execution;
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001318 task_wakeup(lua->task, TASK_WOKEN_MSG);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001319 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001320 if (!yield_allowed) {
1321 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001322 ret = HLUA_E_YIELD;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001323 break;
1324 }
1325 ret = HLUA_E_AGAIN;
1326 break;
1327
1328 case LUA_ERRRUN:
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001329
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001330 /* Special exit case. The traditional exit is returned as an error
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001331 * because the errors ares the only one mean to return immediately
1332 * from and lua execution.
1333 */
1334 if (lua->flags & HLUA_EXIT) {
1335 ret = HLUA_E_OK;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01001336 hlua_ctx_renew(lua, 1);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001337 break;
1338 }
1339
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001340 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001341 if (!lua_checkstack(lua->T, 1)) {
1342 ret = HLUA_E_ERR;
1343 break;
1344 }
1345 msg = lua_tostring(lua->T, -1);
1346 lua_settop(lua->T, 0); /* Empty the stack. */
1347 lua_pop(lua->T, 1);
Christopher Fauletd09cc512021-03-24 14:48:45 +01001348 trace = hlua_traceback(lua->T, ", ");
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001349 if (msg)
Thierry Fournier46278ff2020-11-29 11:48:12 +01001350 lua_pushfstring(lua->T, "[state-id %d] runtime error: %s from %s", lua->state_id, msg, trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001351 else
Thierry Fournier46278ff2020-11-29 11:48:12 +01001352 lua_pushfstring(lua->T, "[state-id %d] unknown runtime error from %s", lua->state_id, trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001353 ret = HLUA_E_ERRMSG;
1354 break;
1355
1356 case LUA_ERRMEM:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001357 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001358 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001359 ret = HLUA_E_NOMEM;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001360 break;
1361
1362 case LUA_ERRERR:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001363 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001364 if (!lua_checkstack(lua->T, 1)) {
1365 ret = HLUA_E_ERR;
1366 break;
1367 }
1368 msg = lua_tostring(lua->T, -1);
1369 lua_settop(lua->T, 0); /* Empty the stack. */
1370 lua_pop(lua->T, 1);
1371 if (msg)
Thierry Fournier46278ff2020-11-29 11:48:12 +01001372 lua_pushfstring(lua->T, "[state-id %d] message handler error: %s", lua->state_id, msg);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001373 else
Thierry Fournier46278ff2020-11-29 11:48:12 +01001374 lua_pushfstring(lua->T, "[state-id %d] message handler error", lua->state_id);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001375 ret = HLUA_E_ERRMSG;
1376 break;
1377
1378 default:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001379 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001380 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001381 ret = HLUA_E_ERR;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001382 break;
1383 }
1384
1385 switch (ret) {
1386 case HLUA_E_AGAIN:
1387 break;
1388
1389 case HLUA_E_ERRMSG:
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001390 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001391 hlua_ctx_renew(lua, 1);
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001392 HLUA_CLR_RUN(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001393 break;
1394
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001395 case HLUA_E_ETMOUT:
1396 case HLUA_E_NOMEM:
1397 case HLUA_E_YIELD:
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001398 case HLUA_E_ERR:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001399 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001400 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001401 hlua_ctx_renew(lua, 0);
1402 break;
1403
1404 case HLUA_E_OK:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001405 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001406 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001407 break;
1408 }
1409
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001410 /* This is the main exit point, remove the Lua lock. */
Thierry Fournier021d9862020-11-28 23:42:03 +01001411 if (lua->state_id == 0)
Thierry Fournier7cbe5042020-11-28 17:02:21 +01001412 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001413
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001414 return ret;
1415}
1416
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001417/* This function exit the current code. */
1418__LJMP static int hlua_done(lua_State *L)
1419{
Thierry Fournier4234dbd2020-11-28 13:18:23 +01001420 struct hlua *hlua;
1421
1422 /* Get hlua struct, or NULL if we execute from main lua state */
1423 hlua = hlua_gethlua(L);
1424 if (!hlua)
1425 return 0;
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001426
1427 hlua->flags |= HLUA_EXIT;
1428 WILL_LJMP(lua_error(L));
1429
1430 return 0;
1431}
1432
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001433/* This function is an LUA binding. It provides a function
1434 * for deleting ACL from a referenced ACL file.
1435 */
1436__LJMP static int hlua_del_acl(lua_State *L)
1437{
1438 const char *name;
1439 const char *key;
1440 struct pat_ref *ref;
1441
1442 MAY_LJMP(check_args(L, 2, "del_acl"));
1443
1444 name = MAY_LJMP(luaL_checkstring(L, 1));
1445 key = MAY_LJMP(luaL_checkstring(L, 2));
1446
1447 ref = pat_ref_lookup(name);
1448 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001449 WILL_LJMP(luaL_error(L, "'del_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001450
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001451 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001452 pat_ref_delete(ref, key);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001453 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001454 return 0;
1455}
1456
1457/* This function is an LUA binding. It provides a function
1458 * for deleting map entry from a referenced map file.
1459 */
1460static int hlua_del_map(lua_State *L)
1461{
1462 const char *name;
1463 const char *key;
1464 struct pat_ref *ref;
1465
1466 MAY_LJMP(check_args(L, 2, "del_map"));
1467
1468 name = MAY_LJMP(luaL_checkstring(L, 1));
1469 key = MAY_LJMP(luaL_checkstring(L, 2));
1470
1471 ref = pat_ref_lookup(name);
1472 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001473 WILL_LJMP(luaL_error(L, "'del_map': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001474
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001475 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001476 pat_ref_delete(ref, key);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001477 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001478 return 0;
1479}
1480
1481/* This function is an LUA binding. It provides a function
1482 * for adding ACL pattern from a referenced ACL file.
1483 */
1484static int hlua_add_acl(lua_State *L)
1485{
1486 const char *name;
1487 const char *key;
1488 struct pat_ref *ref;
1489
1490 MAY_LJMP(check_args(L, 2, "add_acl"));
1491
1492 name = MAY_LJMP(luaL_checkstring(L, 1));
1493 key = MAY_LJMP(luaL_checkstring(L, 2));
1494
1495 ref = pat_ref_lookup(name);
1496 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001497 WILL_LJMP(luaL_error(L, "'add_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001498
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001499 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001500 if (pat_ref_find_elt(ref, key) == NULL)
1501 pat_ref_add(ref, key, NULL, NULL);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001502 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001503 return 0;
1504}
1505
1506/* This function is an LUA binding. It provides a function
1507 * for setting map pattern and sample from a referenced map
1508 * file.
1509 */
1510static int hlua_set_map(lua_State *L)
1511{
1512 const char *name;
1513 const char *key;
1514 const char *value;
1515 struct pat_ref *ref;
1516
1517 MAY_LJMP(check_args(L, 3, "set_map"));
1518
1519 name = MAY_LJMP(luaL_checkstring(L, 1));
1520 key = MAY_LJMP(luaL_checkstring(L, 2));
1521 value = MAY_LJMP(luaL_checkstring(L, 3));
1522
1523 ref = pat_ref_lookup(name);
1524 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001525 WILL_LJMP(luaL_error(L, "'set_map': unknown map file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001526
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001527 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001528 if (pat_ref_find_elt(ref, key) != NULL)
1529 pat_ref_set(ref, key, value, NULL);
1530 else
1531 pat_ref_add(ref, key, value, NULL);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001532 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001533 return 0;
1534}
1535
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001536/* A class is a lot of memory that contain data. This data can be a table,
1537 * an integer or user data. This data is associated with a metatable. This
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001538 * metatable have an original version registered in the global context with
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001539 * the name of the object (_G[<name>] = <metable> ).
1540 *
1541 * A metable is a table that modify the standard behavior of a standard
1542 * access to the associated data. The entries of this new metatable are
1543 * defined as is:
1544 *
1545 * http://lua-users.org/wiki/MetatableEvents
1546 *
1547 * __index
1548 *
1549 * we access an absent field in a table, the result is nil. This is
1550 * true, but it is not the whole truth. Actually, such access triggers
1551 * the interpreter to look for an __index metamethod: If there is no
1552 * such method, as usually happens, then the access results in nil;
1553 * otherwise, the metamethod will provide the result.
1554 *
1555 * Control 'prototype' inheritance. When accessing "myTable[key]" and
1556 * the key does not appear in the table, but the metatable has an __index
1557 * property:
1558 *
1559 * - if the value is a function, the function is called, passing in the
1560 * table and the key; the return value of that function is returned as
1561 * the result.
1562 *
1563 * - if the value is another table, the value of the key in that table is
1564 * asked for and returned (and if it doesn't exist in that table, but that
1565 * table's metatable has an __index property, then it continues on up)
1566 *
1567 * - Use "rawget(myTable,key)" to skip this metamethod.
1568 *
1569 * http://www.lua.org/pil/13.4.1.html
1570 *
1571 * __newindex
1572 *
1573 * Like __index, but control property assignment.
1574 *
1575 * __mode - Control weak references. A string value with one or both
1576 * of the characters 'k' and 'v' which specifies that the the
1577 * keys and/or values in the table are weak references.
1578 *
1579 * __call - Treat a table like a function. When a table is followed by
1580 * parenthesis such as "myTable( 'foo' )" and the metatable has
1581 * a __call key pointing to a function, that function is invoked
1582 * (passing any specified arguments) and the return value is
1583 * returned.
1584 *
1585 * __metatable - Hide the metatable. When "getmetatable( myTable )" is
1586 * called, if the metatable for myTable has a __metatable
1587 * key, the value of that key is returned instead of the
1588 * actual metatable.
1589 *
1590 * __tostring - Control string representation. When the builtin
1591 * "tostring( myTable )" function is called, if the metatable
1592 * for myTable has a __tostring property set to a function,
1593 * that function is invoked (passing myTable to it) and the
1594 * return value is used as the string representation.
1595 *
1596 * __len - Control table length. When the table length is requested using
1597 * the length operator ( '#' ), if the metatable for myTable has
1598 * a __len key pointing to a function, that function is invoked
1599 * (passing myTable to it) and the return value used as the value
1600 * of "#myTable".
1601 *
1602 * __gc - Userdata finalizer code. When userdata is set to be garbage
1603 * collected, if the metatable has a __gc field pointing to a
1604 * function, that function is first invoked, passing the userdata
1605 * to it. The __gc metamethod is not called for tables.
1606 * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html)
1607 *
1608 * Special metamethods for redefining standard operators:
1609 * http://www.lua.org/pil/13.1.html
1610 *
1611 * __add "+"
1612 * __sub "-"
1613 * __mul "*"
1614 * __div "/"
1615 * __unm "!"
1616 * __pow "^"
1617 * __concat ".."
1618 *
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001619 * Special methods for redefining standard relations
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001620 * http://www.lua.org/pil/13.2.html
1621 *
1622 * __eq "=="
1623 * __lt "<"
1624 * __le "<="
1625 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001626
1627/*
1628 *
1629 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001630 * Class Map
1631 *
1632 *
1633 */
1634
1635/* Returns a struct hlua_map if the stack entry "ud" is
1636 * a class session, otherwise it throws an error.
1637 */
1638__LJMP static struct map_descriptor *hlua_checkmap(lua_State *L, int ud)
1639{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001640 return MAY_LJMP(hlua_checkudata(L, ud, class_map_ref));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001641}
1642
1643/* This function is the map constructor. It don't need
1644 * the class Map object. It creates and return a new Map
1645 * object. It must be called only during "body" or "init"
1646 * context because it process some filesystem accesses.
1647 */
1648__LJMP static int hlua_map_new(struct lua_State *L)
1649{
1650 const char *fn;
1651 int match = PAT_MATCH_STR;
1652 struct sample_conv conv;
1653 const char *file = "";
1654 int line = 0;
1655 lua_Debug ar;
1656 char *err = NULL;
1657 struct arg args[2];
1658
1659 if (lua_gettop(L) < 1 || lua_gettop(L) > 2)
1660 WILL_LJMP(luaL_error(L, "'new' needs at least 1 argument."));
1661
1662 fn = MAY_LJMP(luaL_checkstring(L, 1));
1663
1664 if (lua_gettop(L) >= 2) {
1665 match = MAY_LJMP(luaL_checkinteger(L, 2));
1666 if (match < 0 || match >= PAT_MATCH_NUM)
1667 WILL_LJMP(luaL_error(L, "'new' needs a valid match method."));
1668 }
1669
1670 /* Get Lua filename and line number. */
1671 if (lua_getstack(L, 1, &ar)) { /* check function at level */
1672 lua_getinfo(L, "Sl", &ar); /* get info about it */
1673 if (ar.currentline > 0) { /* is there info? */
1674 file = ar.short_src;
1675 line = ar.currentline;
1676 }
1677 }
1678
1679 /* fill fake sample_conv struct. */
1680 conv.kw = ""; /* unused. */
1681 conv.process = NULL; /* unused. */
1682 conv.arg_mask = 0; /* unused. */
1683 conv.val_args = NULL; /* unused. */
1684 conv.out_type = SMP_T_STR;
1685 conv.private = (void *)(long)match;
1686 switch (match) {
1687 case PAT_MATCH_STR: conv.in_type = SMP_T_STR; break;
1688 case PAT_MATCH_BEG: conv.in_type = SMP_T_STR; break;
1689 case PAT_MATCH_SUB: conv.in_type = SMP_T_STR; break;
1690 case PAT_MATCH_DIR: conv.in_type = SMP_T_STR; break;
1691 case PAT_MATCH_DOM: conv.in_type = SMP_T_STR; break;
1692 case PAT_MATCH_END: conv.in_type = SMP_T_STR; break;
1693 case PAT_MATCH_REG: conv.in_type = SMP_T_STR; break;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001694 case PAT_MATCH_INT: conv.in_type = SMP_T_SINT; break;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001695 case PAT_MATCH_IP: conv.in_type = SMP_T_ADDR; break;
1696 default:
1697 WILL_LJMP(luaL_error(L, "'new' doesn't support this match mode."));
1698 }
1699
1700 /* fill fake args. */
1701 args[0].type = ARGT_STR;
Christopher Faulet73292e92020-08-06 08:40:09 +02001702 args[0].data.str.area = strdup(fn);
1703 args[0].data.str.data = strlen(fn);
1704 args[0].data.str.size = args[0].data.str.data+1;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001705 args[1].type = ARGT_STOP;
1706
1707 /* load the map. */
1708 if (!sample_load_map(args, &conv, file, line, &err)) {
Ilya Shipitsinb8888ab2021-01-06 21:20:16 +05001709 /* error case: we can't use luaL_error because we must
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001710 * free the err variable.
1711 */
1712 luaL_where(L, 1);
1713 lua_pushfstring(L, "'new': %s.", err);
1714 lua_concat(L, 2);
1715 free(err);
Christopher Faulet6ad7df42020-08-07 11:45:18 +02001716 chunk_destroy(&args[0].data.str);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001717 WILL_LJMP(lua_error(L));
1718 }
1719
1720 /* create the lua object. */
1721 lua_newtable(L);
1722 lua_pushlightuserdata(L, args[0].data.map);
1723 lua_rawseti(L, -2, 0);
1724
1725 /* Pop a class Map metatable and affect it to the userdata. */
1726 lua_rawgeti(L, LUA_REGISTRYINDEX, class_map_ref);
1727 lua_setmetatable(L, -2);
1728
1729
1730 return 1;
1731}
1732
1733__LJMP static inline int _hlua_map_lookup(struct lua_State *L, int str)
1734{
1735 struct map_descriptor *desc;
1736 struct pattern *pat;
1737 struct sample smp;
1738
1739 MAY_LJMP(check_args(L, 2, "lookup"));
1740 desc = MAY_LJMP(hlua_checkmap(L, 1));
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001741 if (desc->pat.expect_type == SMP_T_SINT) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001742 smp.data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001743 smp.data.u.sint = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001744 }
1745 else {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001746 smp.data.type = SMP_T_STR;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001747 smp.flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001748 smp.data.u.str.area = (char *)MAY_LJMP(luaL_checklstring(L, 2, (size_t *)&smp.data.u.str.data));
Thierry Fournier91dc0c02020-11-10 20:38:20 +01001749 smp.data.u.str.size = smp.data.u.str.data + 1;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001750 }
1751
1752 pat = pattern_exec_match(&desc->pat, &smp, 1);
Thierry FOURNIER503bb092015-08-19 08:35:43 +02001753 if (!pat || !pat->data) {
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001754 if (str)
1755 lua_pushstring(L, "");
1756 else
1757 lua_pushnil(L);
1758 return 1;
1759 }
1760
1761 /* The Lua pattern must return a string, so we can't check the returned type */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001762 lua_pushlstring(L, pat->data->u.str.area, pat->data->u.str.data);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001763 return 1;
1764}
1765
1766__LJMP static int hlua_map_lookup(struct lua_State *L)
1767{
1768 return _hlua_map_lookup(L, 0);
1769}
1770
1771__LJMP static int hlua_map_slookup(struct lua_State *L)
1772{
1773 return _hlua_map_lookup(L, 1);
1774}
1775
1776/*
1777 *
1778 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001779 * Class Socket
1780 *
1781 *
1782 */
1783
1784__LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud)
1785{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001786 return MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001787}
1788
1789/* This function is the handler called for each I/O on the established
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001790 * connection. It is used for notify space available to send or data
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001791 * received.
1792 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001793static void hlua_socket_handler(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001794{
Willy Tarreau00a37f02015-04-13 12:05:19 +02001795 struct stream_interface *si = appctx->owner;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001796
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001797 if (appctx->ctx.hlua_cosocket.die) {
1798 si_shutw(si);
1799 si_shutr(si);
1800 si_ic(si)->flags |= CF_READ_NULL;
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001801 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1802 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001803 stream_shutdown(si_strm(si), SF_ERR_KILLED);
1804 }
1805
Ilya Shipitsinb8888ab2021-01-06 21:20:16 +05001806 /* If we can't write, wakeup the pending write signals. */
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001807 if (channel_output_closed(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001808 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001809
Ilya Shipitsinb8888ab2021-01-06 21:20:16 +05001810 /* If we can't read, wakeup the pending read signals. */
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001811 if (channel_input_closed(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001812 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001813
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02001814 /* if the connection is not established, inform the stream that we want
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001815 * to be notified whenever the connection completes.
1816 */
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02001817 if (si_opposite(si)->state < SI_ST_EST) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001818 si_cant_get(si);
Willy Tarreau12c24232018-12-06 15:29:50 +01001819 si_rx_conn_blk(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01001820 si_rx_endp_more(si);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001821 return;
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001822 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001823
1824 /* This function is called after the connect. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001825 appctx->ctx.hlua_cosocket.connected = 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001826
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001827 /* Wake the tasks which wants to write if the buffer have available space. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001828 if (channel_may_recv(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001829 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001830
1831 /* Wake the tasks which wants to read if the buffer contains data. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001832 if (!channel_is_empty(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001833 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001834
1835 /* Some data were injected in the buffer, notify the stream
1836 * interface.
1837 */
1838 if (!channel_is_empty(si_ic(si)))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001839 si_update(si);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001840
1841 /* If write notifications are registered, we considers we want
Willy Tarreau3367d412018-11-15 10:57:41 +01001842 * to write, so we clear the blocking flag.
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001843 */
1844 if (notification_registered(&appctx->ctx.hlua_cosocket.wake_on_write))
Willy Tarreau3367d412018-11-15 10:57:41 +01001845 si_rx_endp_more(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001846}
1847
Willy Tarreau87b09662015-04-03 00:22:06 +02001848/* This function is called when the "struct stream" is destroyed.
1849 * Remove the link from the object to this stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001850 * Wake all the pending signals.
1851 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001852static void hlua_socket_release(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001853{
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001854 struct xref *peer;
1855
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001856 /* Remove my link in the original object. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001857 peer = xref_get_peer_and_lock(&appctx->ctx.hlua_cosocket.xref);
1858 if (peer)
1859 xref_disconnect(&appctx->ctx.hlua_cosocket.xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001860
1861 /* Wake all the task waiting for me. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001862 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1863 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001864}
1865
1866/* If the garbage collectio of the object is launch, nobody
Willy Tarreau87b09662015-04-03 00:22:06 +02001867 * uses this object. If the stream does not exists, just quit.
1868 * Send the shutdown signal to the stream. In some cases,
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001869 * pending signal can rest in the read and write lists. destroy
1870 * it.
1871 */
1872__LJMP static int hlua_socket_gc(lua_State *L)
1873{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001874 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001875 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001876 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001877
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001878 MAY_LJMP(check_args(L, 1, "__gc"));
1879
1880 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001881 peer = xref_get_peer_and_lock(&socket->xref);
1882 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001883 return 0;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001884 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001885
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001886 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001887 appctx->ctx.hlua_cosocket.die = 1;
1888 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001889
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001890 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001891 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001892 return 0;
1893}
1894
1895/* The close function send shutdown signal and break the
Willy Tarreau87b09662015-04-03 00:22:06 +02001896 * links between the stream and the object.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001897 */
sada05ed3302018-05-11 11:48:18 -07001898__LJMP static int hlua_socket_close_helper(lua_State *L)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001899{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001900 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001901 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001902 struct xref *peer;
Thierry Fournier4234dbd2020-11-28 13:18:23 +01001903 struct hlua *hlua;
1904
1905 /* Get hlua struct, or NULL if we execute from main lua state */
1906 hlua = hlua_gethlua(L);
1907 if (!hlua)
1908 return 0;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001909
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001910 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001911
1912 /* Check if we run on the same thread than the xreator thread.
1913 * We cannot access to the socket if the thread is different.
1914 */
1915 if (socket->tid != tid)
1916 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1917
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001918 peer = xref_get_peer_and_lock(&socket->xref);
1919 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001920 return 0;
Willy Tarreauf31af932020-01-14 09:59:38 +01001921
1922 hlua->gc_count--;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001923 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001924
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001925 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001926 appctx->ctx.hlua_cosocket.die = 1;
1927 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001928
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001929 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001930 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001931 return 0;
1932}
1933
sada05ed3302018-05-11 11:48:18 -07001934/* The close function calls close_helper.
1935 */
1936__LJMP static int hlua_socket_close(lua_State *L)
1937{
1938 MAY_LJMP(check_args(L, 1, "close"));
1939 return hlua_socket_close_helper(L);
1940}
1941
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001942/* This Lua function assumes that the stack contain three parameters.
1943 * 1 - USERDATA containing a struct socket
1944 * 2 - INTEGER with values of the macro defined below
1945 * If the integer is -1, we must read at most one line.
1946 * If the integer is -2, we ust read all the data until the
1947 * end of the stream.
1948 * If the integer is positive value, we must read a number of
1949 * bytes corresponding to this value.
1950 */
1951#define HLSR_READ_LINE (-1)
1952#define HLSR_READ_ALL (-2)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001953__LJMP static int hlua_socket_receive_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001954{
1955 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
1956 int wanted = lua_tointeger(L, 2);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01001957 struct hlua *hlua;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001958 struct appctx *appctx;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001959 size_t len;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001960 int nblk;
Willy Tarreau206ba832018-06-14 15:27:31 +02001961 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001962 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02001963 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001964 size_t len2;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001965 int skip_at_end = 0;
Willy Tarreau81389672015-03-10 12:03:52 +01001966 struct channel *oc;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001967 struct stream_interface *si;
1968 struct stream *s;
1969 struct xref *peer;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001970 int missing_bytes;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001971
Thierry Fournier4234dbd2020-11-28 13:18:23 +01001972 /* Get hlua struct, or NULL if we execute from main lua state */
1973 hlua = hlua_gethlua(L);
1974
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001975 /* Check if this lua stack is schedulable. */
1976 if (!hlua || !hlua->task)
1977 WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in "
1978 "'frontend', 'backend' or 'task'"));
1979
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001980 /* Check if we run on the same thread than the xreator thread.
1981 * We cannot access to the socket if the thread is different.
1982 */
1983 if (socket->tid != tid)
1984 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1985
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001986 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001987 peer = xref_get_peer_and_lock(&socket->xref);
1988 if (!peer)
1989 goto no_peer;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001990 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
1991 si = appctx->owner;
1992 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001993
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001994 oc = &s->res;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001995 if (wanted == HLSR_READ_LINE) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001996 /* Read line. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001997 nblk = co_getline_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001998 if (nblk < 0) /* Connection close. */
1999 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002000 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002001 goto connection_empty;
Thierry FOURNIER00543922015-03-09 18:35:06 +01002002
2003 /* remove final \r\n. */
2004 if (nblk == 1) {
2005 if (blk1[len1-1] == '\n') {
2006 len1--;
2007 skip_at_end++;
2008 if (blk1[len1-1] == '\r') {
2009 len1--;
2010 skip_at_end++;
2011 }
2012 }
2013 }
2014 else {
2015 if (blk2[len2-1] == '\n') {
2016 len2--;
2017 skip_at_end++;
2018 if (blk2[len2-1] == '\r') {
2019 len2--;
2020 skip_at_end++;
2021 }
2022 }
2023 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002024 }
2025
2026 else if (wanted == HLSR_READ_ALL) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002027 /* Read all the available data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02002028 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002029 if (nblk < 0) /* Connection close. */
2030 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002031 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002032 goto connection_empty;
2033 }
2034
2035 else {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002036 /* Read a block of data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02002037 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002038 if (nblk < 0) /* Connection close. */
2039 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002040 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002041 goto connection_empty;
2042
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02002043 missing_bytes = wanted - socket->b.n;
2044 if (len1 > missing_bytes) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002045 nblk = 1;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02002046 len1 = missing_bytes;
2047 } if (nblk == 2 && len1 + len2 > missing_bytes)
2048 len2 = missing_bytes - len1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002049 }
2050
2051 len = len1;
2052
2053 luaL_addlstring(&socket->b, blk1, len1);
2054 if (nblk == 2) {
2055 len += len2;
2056 luaL_addlstring(&socket->b, blk2, len2);
2057 }
2058
2059 /* Consume data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02002060 co_skip(oc, len + skip_at_end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002061
2062 /* Don't wait anything. */
Thierry FOURNIER7e4ee472018-05-25 15:03:50 +02002063 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002064
2065 /* If the pattern reclaim to read all the data
2066 * in the connection, got out.
2067 */
2068 if (wanted == HLSR_READ_ALL)
2069 goto connection_empty;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02002070 else if (wanted >= 0 && socket->b.n < wanted)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002071 goto connection_empty;
2072
2073 /* Return result. */
2074 luaL_pushresult(&socket->b);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002075 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002076 return 1;
2077
2078connection_closed:
2079
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002080 xref_unlock(&socket->xref, peer);
2081
2082no_peer:
2083
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002084 /* If the buffer containds data. */
2085 if (socket->b.n > 0) {
2086 luaL_pushresult(&socket->b);
2087 return 1;
2088 }
2089 lua_pushnil(L);
2090 lua_pushstring(L, "connection closed.");
2091 return 2;
2092
2093connection_empty:
2094
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002095 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_read, hlua->task)) {
2096 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002097 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002098 }
2099 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002100 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_receive_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002101 return 0;
2102}
2103
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002104/* This Lua function gets two parameters. The first one can be string
2105 * or a number. If the string is "*l", the user requires one line. If
2106 * the string is "*a", the user requires all the contents of the stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002107 * If the value is a number, the user require a number of bytes equal
2108 * to the value. The default value is "*l" (a line).
2109 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002110 * This parameter with a variable type is converted in integer. This
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002111 * integer takes this values:
2112 * -1 : read a line
2113 * -2 : read all the stream
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002114 * >0 : amount of bytes.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002115 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002116 * The second parameter is optional. It contains a string that must be
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002117 * concatenated with the read data.
2118 */
2119__LJMP static int hlua_socket_receive(struct lua_State *L)
2120{
2121 int wanted = HLSR_READ_LINE;
2122 const char *pattern;
2123 int type;
2124 char *error;
2125 size_t len;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002126 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002127
2128 if (lua_gettop(L) < 1 || lua_gettop(L) > 3)
2129 WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments."));
2130
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002131 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002132
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002133 /* Check if we run on the same thread than the xreator thread.
2134 * We cannot access to the socket if the thread is different.
2135 */
2136 if (socket->tid != tid)
2137 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2138
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002139 /* check for pattern. */
2140 if (lua_gettop(L) >= 2) {
2141 type = lua_type(L, 2);
2142 if (type == LUA_TSTRING) {
2143 pattern = lua_tostring(L, 2);
2144 if (strcmp(pattern, "*a") == 0)
2145 wanted = HLSR_READ_ALL;
2146 else if (strcmp(pattern, "*l") == 0)
2147 wanted = HLSR_READ_LINE;
2148 else {
2149 wanted = strtoll(pattern, &error, 10);
2150 if (*error != '\0')
2151 WILL_LJMP(luaL_error(L, "Unsupported pattern."));
2152 }
2153 }
2154 else if (type == LUA_TNUMBER) {
2155 wanted = lua_tointeger(L, 2);
2156 if (wanted < 0)
2157 WILL_LJMP(luaL_error(L, "Unsupported size."));
2158 }
2159 }
2160
2161 /* Set pattern. */
2162 lua_pushinteger(L, wanted);
Tim Duesterhusc6e377e2018-01-04 19:32:13 +01002163
2164 /* Check if we would replace the top by itself. */
2165 if (lua_gettop(L) != 2)
2166 lua_replace(L, 2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002167
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002168 /* init buffer, and fill it with prefix. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002169 luaL_buffinit(L, &socket->b);
2170
2171 /* Check prefix. */
2172 if (lua_gettop(L) >= 3) {
2173 if (lua_type(L, 3) != LUA_TSTRING)
2174 WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix"));
2175 pattern = lua_tolstring(L, 3, &len);
2176 luaL_addlstring(&socket->b, pattern, len);
2177 }
2178
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002179 return __LJMP(hlua_socket_receive_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002180}
2181
2182/* Write the Lua input string in the output buffer.
Mark Lakes22154b42018-01-29 14:38:40 -08002183 * This function returns a yield if no space is available.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002184 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002185static int hlua_socket_write_yield(struct lua_State *L,int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002186{
2187 struct hlua_socket *socket;
Thierry Fournier4234dbd2020-11-28 13:18:23 +01002188 struct hlua *hlua;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002189 struct appctx *appctx;
2190 size_t buf_len;
2191 const char *buf;
2192 int len;
2193 int send_len;
2194 int sent;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002195 struct xref *peer;
2196 struct stream_interface *si;
2197 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002198
Thierry Fournier4234dbd2020-11-28 13:18:23 +01002199 /* Get hlua struct, or NULL if we execute from main lua state */
2200 hlua = hlua_gethlua(L);
2201
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002202 /* Check if this lua stack is schedulable. */
2203 if (!hlua || !hlua->task)
2204 WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in "
2205 "'frontend', 'backend' or 'task'"));
2206
2207 /* Get object */
2208 socket = MAY_LJMP(hlua_checksocket(L, 1));
2209 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002210 sent = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002211
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002212 /* Check if we run on the same thread than the xreator thread.
2213 * We cannot access to the socket if the thread is different.
2214 */
2215 if (socket->tid != tid)
2216 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2217
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002218 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002219 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002220 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002221 lua_pushinteger(L, -1);
2222 return 1;
2223 }
2224 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2225 si = appctx->owner;
2226 s = si_strm(si);
2227
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002228 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002229 if (channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002230 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002231 lua_pushinteger(L, -1);
2232 return 1;
2233 }
2234
2235 /* Update the input buffer data. */
2236 buf += sent;
2237 send_len = buf_len - sent;
2238
2239 /* All the data are sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002240 if (sent >= buf_len) {
2241 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002242 return 1; /* Implicitly return the length sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002243 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002244
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002245 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002246 * the request buffer if its not required.
2247 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002248 if (s->req.buf.size == 0) {
Willy Tarreau581abd32018-10-25 10:21:41 +02002249 if (!si_alloc_ibuf(si, &appctx->buffer_wait))
Christopher Faulet33834b12016-12-19 09:29:06 +01002250 goto hlua_socket_write_yield_return;
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002251 }
2252
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002253 /* Check for available space. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002254 len = b_room(&s->req.buf);
Christopher Faulet33834b12016-12-19 09:29:06 +01002255 if (len <= 0) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002256 goto hlua_socket_write_yield_return;
Christopher Faulet33834b12016-12-19 09:29:06 +01002257 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002258
2259 /* send data */
2260 if (len < send_len)
2261 send_len = len;
Thierry FOURNIER66b89192018-05-27 01:14:47 +02002262 len = ci_putblk(&s->req, buf, send_len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002263
2264 /* "Not enough space" (-1), "Buffer too little to contain
2265 * the data" (-2) are not expected because the available length
2266 * is tested.
2267 * Other unknown error are also not expected.
2268 */
2269 if (len <= 0) {
Willy Tarreaubc18da12015-03-13 14:00:47 +01002270 if (len == -1)
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002271 s->req.flags |= CF_WAKE_WRITE;
Willy Tarreaubc18da12015-03-13 14:00:47 +01002272
sada05ed3302018-05-11 11:48:18 -07002273 MAY_LJMP(hlua_socket_close_helper(L));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002274 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002275 lua_pushinteger(L, -1);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002276 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002277 return 1;
2278 }
2279
2280 /* update buffers. */
Thierry FOURNIER101b9762018-05-27 01:27:40 +02002281 appctx_wakeup(appctx);
Willy Tarreaude70fa12015-09-26 11:25:05 +02002282
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002283 s->req.rex = TICK_ETERNITY;
2284 s->res.wex = TICK_ETERNITY;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002285
2286 /* Update length sent. */
2287 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002288 lua_pushinteger(L, sent + len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002289
2290 /* All the data buffer is sent ? */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002291 if (sent + len >= buf_len) {
2292 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002293 return 1;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002294 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002295
2296hlua_socket_write_yield_return:
Thierry FOURNIERba42fcd2018-05-27 00:59:48 +02002297 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2298 xref_unlock(&socket->xref, peer);
2299 WILL_LJMP(luaL_error(L, "out of memory"));
2300 }
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002301 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002302 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_write_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002303 return 0;
2304}
2305
2306/* This function initiate the send of data. It just check the input
2307 * parameters and push an integer in the Lua stack that contain the
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002308 * amount of data written to the buffer. This is used by the function
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002309 * "hlua_socket_write_yield" that can yield.
2310 *
2311 * The Lua function gets between 3 and 4 parameters. The first one is
2312 * the associated object. The second is a string buffer. The third is
2313 * a facultative integer that represents where is the buffer position
2314 * of the start of the data that can send. The first byte is the
2315 * position "1". The default value is "1". The fourth argument is a
2316 * facultative integer that represents where is the buffer position
2317 * of the end of the data that can send. The default is the last byte.
2318 */
2319static int hlua_socket_send(struct lua_State *L)
2320{
2321 int i;
2322 int j;
2323 const char *buf;
2324 size_t buf_len;
2325
2326 /* Check number of arguments. */
2327 if (lua_gettop(L) < 2 || lua_gettop(L) > 4)
2328 WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments"));
2329
2330 /* Get the string. */
2331 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
2332
2333 /* Get and check j. */
2334 if (lua_gettop(L) == 4) {
2335 j = MAY_LJMP(luaL_checkinteger(L, 4));
2336 if (j < 0)
2337 j = buf_len + j + 1;
2338 if (j > buf_len)
2339 j = buf_len + 1;
2340 lua_pop(L, 1);
2341 }
2342 else
2343 j = buf_len;
2344
2345 /* Get and check i. */
2346 if (lua_gettop(L) == 3) {
2347 i = MAY_LJMP(luaL_checkinteger(L, 3));
2348 if (i < 0)
2349 i = buf_len + i + 1;
2350 if (i > buf_len)
2351 i = buf_len + 1;
2352 lua_pop(L, 1);
2353 } else
2354 i = 1;
2355
2356 /* Check bth i and j. */
2357 if (i > j) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002358 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002359 return 1;
2360 }
2361 if (i == 0 && j == 0) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002362 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002363 return 1;
2364 }
2365 if (i == 0)
2366 i = 1;
2367 if (j == 0)
2368 j = 1;
2369
2370 /* Pop the string. */
2371 lua_pop(L, 1);
2372
2373 /* Update the buffer length. */
2374 buf += i - 1;
2375 buf_len = j - i + 1;
2376 lua_pushlstring(L, buf, buf_len);
2377
2378 /* This unsigned is used to remember the amount of sent data. */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002379 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002380
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002381 return MAY_LJMP(hlua_socket_write_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002382}
2383
Willy Tarreau22b0a682015-06-17 19:43:49 +02002384#define SOCKET_INFO_MAX_LEN sizeof("[0000:0000:0000:0000:0000:0000:0000:0000]:12345")
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002385__LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr)
2386{
2387 static char buffer[SOCKET_INFO_MAX_LEN];
2388 int ret;
2389 int len;
2390 char *p;
2391
2392 ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1);
2393 if (ret <= 0) {
2394 lua_pushnil(L);
2395 return 1;
2396 }
2397
2398 if (ret == AF_UNIX) {
2399 lua_pushstring(L, buffer+1);
2400 return 1;
2401 }
2402 else if (ret == AF_INET6) {
2403 buffer[0] = '[';
2404 len = strlen(buffer);
2405 buffer[len] = ']';
2406 len++;
2407 buffer[len] = ':';
2408 len++;
2409 p = buffer;
2410 }
2411 else if (ret == AF_INET) {
2412 p = buffer + 1;
2413 len = strlen(p);
2414 p[len] = ':';
2415 len++;
2416 }
2417 else {
2418 lua_pushnil(L);
2419 return 1;
2420 }
2421
2422 if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) {
2423 lua_pushnil(L);
2424 return 1;
2425 }
2426
2427 lua_pushstring(L, p);
2428 return 1;
2429}
2430
2431/* Returns information about the peer of the connection. */
2432__LJMP static int hlua_socket_getpeername(struct lua_State *L)
2433{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002434 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002435 struct xref *peer;
2436 struct appctx *appctx;
2437 struct stream_interface *si;
2438 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002439 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002440
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002441 MAY_LJMP(check_args(L, 1, "getpeername"));
2442
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002443 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002444
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002445 /* Check if we run on the same thread than the xreator thread.
2446 * We cannot access to the socket if the thread is different.
2447 */
2448 if (socket->tid != tid)
2449 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2450
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002451 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002452 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002453 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002454 lua_pushnil(L);
2455 return 1;
2456 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002457 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2458 si = appctx->owner;
2459 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002460
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002461 if (!s->target_addr) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002462 xref_unlock(&socket->xref, peer);
Willy Tarreaua71f6422016-11-16 17:00:14 +01002463 lua_pushnil(L);
2464 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002465 }
2466
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002467 ret = MAY_LJMP(hlua_socket_info(L, s->target_addr));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002468 xref_unlock(&socket->xref, peer);
2469 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002470}
2471
2472/* Returns information about my connection side. */
2473static int hlua_socket_getsockname(struct lua_State *L)
2474{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002475 struct hlua_socket *socket;
2476 struct connection *conn;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002477 struct appctx *appctx;
2478 struct xref *peer;
2479 struct stream_interface *si;
2480 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002481 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002482
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002483 MAY_LJMP(check_args(L, 1, "getsockname"));
2484
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002485 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002486
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002487 /* Check if we run on the same thread than the xreator thread.
2488 * We cannot access to the socket if the thread is different.
2489 */
2490 if (socket->tid != tid)
2491 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2492
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002493 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002494 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002495 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002496 lua_pushnil(L);
2497 return 1;
2498 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002499 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2500 si = appctx->owner;
2501 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002502
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002503 conn = cs_conn(objt_cs(s->si[1].end));
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002504 if (!conn || !conn_get_src(conn)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002505 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002506 lua_pushnil(L);
2507 return 1;
2508 }
2509
Willy Tarreau9da9a6f2019-07-17 14:49:44 +02002510 ret = hlua_socket_info(L, conn->src);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002511 xref_unlock(&socket->xref, peer);
2512 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002513}
2514
2515/* This struct define the applet. */
Willy Tarreau30576452015-04-13 13:50:30 +02002516static struct applet update_applet = {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002517 .obj_type = OBJ_TYPE_APPLET,
2518 .name = "<LUA_TCP>",
2519 .fct = hlua_socket_handler,
2520 .release = hlua_socket_release,
2521};
2522
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002523__LJMP static int hlua_socket_connect_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002524{
2525 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry Fournier4234dbd2020-11-28 13:18:23 +01002526 struct hlua *hlua;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002527 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002528 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002529 struct stream_interface *si;
2530 struct stream *s;
2531
Thierry Fournier4234dbd2020-11-28 13:18:23 +01002532 /* Get hlua struct, or NULL if we execute from main lua state */
2533 hlua = hlua_gethlua(L);
2534 if (!hlua)
2535 return 0;
2536
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002537 /* Check if we run on the same thread than the xreator thread.
2538 * We cannot access to the socket if the thread is different.
2539 */
2540 if (socket->tid != tid)
2541 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2542
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002543 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002544 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002545 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002546 lua_pushnil(L);
2547 lua_pushstring(L, "Can't connect");
2548 return 2;
2549 }
2550 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2551 si = appctx->owner;
2552 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002553
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002554 /* Check if we run on the same thread than the xreator thread.
2555 * We cannot access to the socket if the thread is different.
2556 */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002557 if (socket->tid != tid) {
2558 xref_unlock(&socket->xref, peer);
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002559 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002560 }
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002561
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002562 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002563 if (!hlua || channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002564 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002565 lua_pushnil(L);
2566 lua_pushstring(L, "Can't connect");
2567 return 2;
2568 }
2569
Willy Tarreaue09101e2018-10-16 17:37:12 +02002570 appctx = __objt_appctx(s->si[0].end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002571
2572 /* Check for connection established. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002573 if (appctx->ctx.hlua_cosocket.connected) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002574 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002575 lua_pushinteger(L, 1);
2576 return 1;
2577 }
2578
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002579 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2580 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002581 WILL_LJMP(luaL_error(L, "out of memory error"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002582 }
2583 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002584 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002585 return 0;
2586}
2587
2588/* This function fail or initite the connection. */
2589__LJMP static int hlua_socket_connect(struct lua_State *L)
2590{
2591 struct hlua_socket *socket;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002592 int port = -1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002593 const char *ip;
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002594 struct hlua *hlua;
2595 struct appctx *appctx;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002596 int low, high;
2597 struct sockaddr_storage *addr;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002598 struct xref *peer;
2599 struct stream_interface *si;
2600 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002601
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002602 if (lua_gettop(L) < 2)
2603 WILL_LJMP(luaL_error(L, "connect: need at least 2 arguments"));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002604
2605 /* Get args. */
2606 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002607
2608 /* Check if we run on the same thread than the xreator thread.
2609 * We cannot access to the socket if the thread is different.
2610 */
2611 if (socket->tid != tid)
2612 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2613
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002614 ip = MAY_LJMP(luaL_checkstring(L, 2));
Tim Duesterhus6edab862018-01-06 19:04:45 +01002615 if (lua_gettop(L) >= 3) {
2616 luaL_Buffer b;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002617 port = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002618
Tim Duesterhus6edab862018-01-06 19:04:45 +01002619 /* Force the ip to end with a colon, to support IPv6 addresses
2620 * that are not enclosed within square brackets.
2621 */
2622 if (port > 0) {
2623 luaL_buffinit(L, &b);
2624 luaL_addstring(&b, ip);
2625 luaL_addchar(&b, ':');
2626 luaL_pushresult(&b);
2627 ip = lua_tolstring(L, lua_gettop(L), NULL);
2628 }
2629 }
2630
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002631 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002632 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002633 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002634 lua_pushnil(L);
2635 return 1;
2636 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002637
2638 /* Parse ip address. */
Willy Tarreau5fc93282020-09-16 18:25:03 +02002639 addr = str2sa_range(ip, NULL, &low, &high, NULL, NULL, NULL, NULL, NULL, PA_O_PORT_OK | PA_O_STREAM);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002640 if (!addr) {
2641 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002642 WILL_LJMP(luaL_error(L, "connect: cannot parse destination address '%s'", ip));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002643 }
Willy Tarreau9da9a6f2019-07-17 14:49:44 +02002644
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002645 /* Set port. */
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002646 if (low == 0) {
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002647 if (addr->ss_family == AF_INET) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002648 if (port == -1) {
2649 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002650 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002651 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002652 ((struct sockaddr_in *)addr)->sin_port = htons(port);
2653 } else if (addr->ss_family == AF_INET6) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002654 if (port == -1) {
2655 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002656 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002657 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002658 ((struct sockaddr_in6 *)addr)->sin6_port = htons(port);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002659 }
2660 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002661
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002662 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2663 si = appctx->owner;
2664 s = si_strm(si);
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002665
Willy Tarreau9b7587a2020-10-15 07:32:10 +02002666 if (!sockaddr_alloc(&s->target_addr, addr, sizeof(*addr))) {
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002667 xref_unlock(&socket->xref, peer);
2668 WILL_LJMP(luaL_error(L, "connect: internal error"));
2669 }
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002670 s->flags |= SF_ADDR_SET;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002671
Thierry Fournier4234dbd2020-11-28 13:18:23 +01002672 /* Get hlua struct, or NULL if we execute from main lua state */
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002673 hlua = hlua_gethlua(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01002674 if (!hlua)
2675 return 0;
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002676
2677 /* inform the stream that we want to be notified whenever the
2678 * connection completes.
2679 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01002680 si_cant_get(&s->si[0]);
Willy Tarreau3367d412018-11-15 10:57:41 +01002681 si_rx_endp_more(&s->si[0]);
Thierry FOURNIER8c8fbbe2015-09-26 17:02:35 +02002682 appctx_wakeup(appctx);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002683
Willy Tarreauf31af932020-01-14 09:59:38 +01002684 hlua->gc_count++;
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02002685
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002686 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2687 xref_unlock(&socket->xref, peer);
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002688 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002689 }
2690 xref_unlock(&socket->xref, peer);
PiBa-NL706d5ee2018-05-05 23:51:42 +02002691
2692 task_wakeup(s->task, TASK_WOKEN_INIT);
2693 /* Return yield waiting for connection. */
2694
Willy Tarreau9635e032018-10-16 17:52:55 +02002695 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002696
2697 return 0;
2698}
2699
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002700#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002701__LJMP static int hlua_socket_connect_ssl(struct lua_State *L)
2702{
2703 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002704 struct xref *peer;
2705 struct appctx *appctx;
2706 struct stream_interface *si;
2707 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002708
2709 MAY_LJMP(check_args(L, 3, "connect_ssl"));
2710 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002711
2712 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002713 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002714 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002715 lua_pushnil(L);
2716 return 1;
2717 }
2718 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2719 si = appctx->owner;
2720 s = si_strm(si);
2721
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01002722 s->target = &socket_ssl->obj_type;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002723 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002724 return MAY_LJMP(hlua_socket_connect(L));
2725}
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002726#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002727
2728__LJMP static int hlua_socket_setoption(struct lua_State *L)
2729{
2730 return 0;
2731}
2732
2733__LJMP static int hlua_socket_settimeout(struct lua_State *L)
2734{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002735 struct hlua_socket *socket;
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002736 int tmout;
Mark Lakes56cc1252018-03-27 09:48:06 +02002737 double dtmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002738 struct xref *peer;
2739 struct appctx *appctx;
2740 struct stream_interface *si;
2741 struct stream *s;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002742
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002743 MAY_LJMP(check_args(L, 2, "settimeout"));
2744
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002745 socket = MAY_LJMP(hlua_checksocket(L, 1));
Mark Lakes56cc1252018-03-27 09:48:06 +02002746
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002747 /* convert the timeout to millis */
2748 dtmout = MAY_LJMP(luaL_checknumber(L, 2)) * 1000;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002749
Thierry Fournier17a921b2018-03-08 09:59:02 +01002750 /* Check for negative values */
Mark Lakes56cc1252018-03-27 09:48:06 +02002751 if (dtmout < 0)
Thierry Fournier17a921b2018-03-08 09:59:02 +01002752 WILL_LJMP(luaL_error(L, "settimeout: cannot set negatives values"));
2753
Mark Lakes56cc1252018-03-27 09:48:06 +02002754 if (dtmout > INT_MAX) /* overflow check */
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002755 WILL_LJMP(luaL_error(L, "settimeout: cannot set values larger than %d ms", INT_MAX));
Mark Lakes56cc1252018-03-27 09:48:06 +02002756
2757 tmout = MS_TO_TICKS((int)dtmout);
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002758 if (tmout == 0)
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05002759 tmout++; /* very small timeouts are adjusted to a minimum of 1ms */
Mark Lakes56cc1252018-03-27 09:48:06 +02002760
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002761 /* Check if we run on the same thread than the xreator thread.
2762 * We cannot access to the socket if the thread is different.
2763 */
2764 if (socket->tid != tid)
2765 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2766
Mark Lakes56cc1252018-03-27 09:48:06 +02002767 /* check for connection break. If some data were read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002768 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002769 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002770 hlua_pusherror(L, "socket: not yet initialised, you can't set timeouts.");
2771 WILL_LJMP(lua_error(L));
2772 return 0;
2773 }
2774 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2775 si = appctx->owner;
2776 s = si_strm(si);
2777
Cyril Bonté7bb63452018-08-17 23:51:02 +02002778 s->sess->fe->timeout.connect = tmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002779 s->req.rto = tmout;
2780 s->req.wto = tmout;
2781 s->res.rto = tmout;
2782 s->res.wto = tmout;
Cyril Bonté7bb63452018-08-17 23:51:02 +02002783 s->req.rex = tick_add_ifset(now_ms, tmout);
2784 s->req.wex = tick_add_ifset(now_ms, tmout);
2785 s->res.rex = tick_add_ifset(now_ms, tmout);
2786 s->res.wex = tick_add_ifset(now_ms, tmout);
2787
2788 s->task->expire = tick_add_ifset(now_ms, tmout);
2789 task_queue(s->task);
2790
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002791 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002792
Thierry Fourniere9636f12018-03-08 09:54:32 +01002793 lua_pushinteger(L, 1);
Tim Duesterhus119a5f12018-01-06 19:16:25 +01002794 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002795}
2796
2797__LJMP static int hlua_socket_new(lua_State *L)
2798{
2799 struct hlua_socket *socket;
2800 struct appctx *appctx;
Willy Tarreau15b5e142015-04-04 14:38:25 +02002801 struct session *sess;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002802 struct stream *strm;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002803
2804 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002805 if (!lua_checkstack(L, 3)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002806 hlua_pusherror(L, "socket: full stack");
2807 goto out_fail_conf;
2808 }
2809
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002810 /* Create the object: obj[0] = userdata. */
2811 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002812 socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket)));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002813 lua_rawseti(L, -2, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002814 memset(socket, 0, sizeof(*socket));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002815 socket->tid = tid;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002816
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05002817 /* Check if the various memory pools are initialized. */
Willy Tarreaubafbe012017-11-24 17:34:44 +01002818 if (!pool_head_stream || !pool_head_buffer) {
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002819 hlua_pusherror(L, "socket: uninitialized pools.");
2820 goto out_fail_conf;
2821 }
2822
Willy Tarreau87b09662015-04-03 00:22:06 +02002823 /* Pop a class stream metatable and affect it to the userdata. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002824 lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref);
2825 lua_setmetatable(L, -2);
2826
Willy Tarreaud420a972015-04-06 00:39:18 +02002827 /* Create the applet context */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01002828 appctx = appctx_new(&update_applet, tid_bit);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002829 if (!appctx) {
2830 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaufeb76402015-04-03 14:10:06 +02002831 goto out_fail_conf;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002832 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002833
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002834 appctx->ctx.hlua_cosocket.connected = 0;
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02002835 appctx->ctx.hlua_cosocket.die = 0;
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002836 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_write);
2837 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_read);
Willy Tarreaub2bf8332015-04-04 15:58:58 +02002838
Willy Tarreaud420a972015-04-06 00:39:18 +02002839 /* Now create a session, task and stream for this applet */
Amaury Denoyelle239fdbf2021-03-24 10:22:03 +01002840 sess = session_new(socket_proxy, NULL, &appctx->obj_type);
Willy Tarreaud420a972015-04-06 00:39:18 +02002841 if (!sess) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002842 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002843 goto out_fail_sess;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002844 }
2845
Christopher Faulet26256f82020-09-14 11:40:13 +02002846 strm = stream_new(sess, &appctx->obj_type, &BUF_NULL);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002847 if (!strm) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002848 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002849 goto out_fail_stream;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002850 }
2851
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002852 /* Initialise cross reference between stream and Lua socket object. */
2853 xref_create(&socket->xref, &appctx->ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002854
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002855 /* Configure "right" stream interface. this "si" is used to connect
2856 * and retrieve data from the server. The connection is initialized
2857 * with the "struct server".
2858 */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002859 si_set_state(&strm->si[1], SI_ST_ASS);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002860
2861 /* Force destination server. */
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002862 strm->flags |= SF_DIRECT | SF_ASSIGNED | SF_BE_ASSIGNED;
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01002863 strm->target = &socket_tcp->obj_type;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002864
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002865 return 1;
2866
Willy Tarreaud420a972015-04-06 00:39:18 +02002867 out_fail_stream:
Willy Tarreau11c36242015-04-04 15:54:03 +02002868 session_free(sess);
Willy Tarreaud420a972015-04-06 00:39:18 +02002869 out_fail_sess:
2870 appctx_free(appctx);
2871 out_fail_conf:
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002872 WILL_LJMP(lua_error(L));
2873 return 0;
2874}
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01002875
2876/*
2877 *
2878 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002879 * Class Channel
2880 *
2881 *
2882 */
2883
2884/* Returns the struct hlua_channel join to the class channel in the
2885 * stack entry "ud" or throws an argument error.
2886 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002887__LJMP static struct channel *hlua_checkchannel(lua_State *L, int ud)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002888{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002889 return MAY_LJMP(hlua_checkudata(L, ud, class_channel_ref));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002890}
2891
Willy Tarreau47860ed2015-03-10 14:07:50 +01002892/* Pushes the channel onto the top of the stack. If the stask does not have a
2893 * free slots, the function fails and returns 0;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002894 */
Willy Tarreau2a71af42015-03-10 13:51:50 +01002895static int hlua_channel_new(lua_State *L, struct channel *channel)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002896{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002897 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002898 if (!lua_checkstack(L, 3))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002899 return 0;
2900
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002901 lua_newtable(L);
Willy Tarreau47860ed2015-03-10 14:07:50 +01002902 lua_pushlightuserdata(L, channel);
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002903 lua_rawseti(L, -2, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002904
2905 /* Pop a class sesison metatable and affect it to the userdata. */
2906 lua_rawgeti(L, LUA_REGISTRYINDEX, class_channel_ref);
2907 lua_setmetatable(L, -2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002908 return 1;
2909}
2910
2911/* Duplicate all the data present in the input channel and put it
2912 * in a string LUA variables. Returns -1 and push a nil value in
2913 * the stack if the channel is closed and all the data are consumed,
2914 * returns 0 if no data are available, otherwise it returns the length
Ilya Shipitsind4259502020-04-08 01:07:56 +05002915 * of the built string.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002916 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002917static inline int _hlua_channel_dup(struct channel *chn, lua_State *L)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002918{
2919 char *blk1;
2920 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002921 size_t len1;
2922 size_t len2;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002923 int ret;
2924 luaL_Buffer b;
2925
Willy Tarreau06d80a92017-10-19 14:32:15 +02002926 ret = ci_getblk_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002927 if (unlikely(ret == 0))
2928 return 0;
2929
2930 if (unlikely(ret < 0)) {
2931 lua_pushnil(L);
2932 return -1;
2933 }
2934
2935 luaL_buffinit(L, &b);
2936 luaL_addlstring(&b, blk1, len1);
2937 if (unlikely(ret == 2))
2938 luaL_addlstring(&b, blk2, len2);
2939 luaL_pushresult(&b);
2940
2941 if (unlikely(ret == 2))
2942 return len1 + len2;
2943 return len1;
2944}
2945
2946/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2947 * a yield. This function keep the data in the buffer.
2948 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002949__LJMP static int hlua_channel_dup_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002950{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002951 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002952
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002953 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2954
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01002955 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02002956 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002957 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002958 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002959
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002960 if (_hlua_channel_dup(chn, L) == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002961 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_dup_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002962 return 1;
2963}
2964
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002965/* Check arguments for the function "hlua_channel_dup_yield". */
2966__LJMP static int hlua_channel_dup(lua_State *L)
2967{
2968 MAY_LJMP(check_args(L, 1, "dup"));
2969 MAY_LJMP(hlua_checkchannel(L, 1));
2970 return MAY_LJMP(hlua_channel_dup_yield(L, 0, 0));
2971}
2972
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002973/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2974 * a yield. This function consumes the data in the buffer. It returns
2975 * a string containing the data or a nil pointer if no data are available
2976 * and the channel is closed.
2977 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002978__LJMP static int hlua_channel_get_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002979{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002980 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002981 int ret;
2982
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002983 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002984
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01002985 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02002986 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002987 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002988 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002989
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002990 ret = _hlua_channel_dup(chn, L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002991 if (unlikely(ret == 0))
Willy Tarreau9635e032018-10-16 17:52:55 +02002992 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_get_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002993
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002994 if (unlikely(ret == -1))
2995 return 1;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002996
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002997 b_sub(&chn->buf, ret);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002998 return 1;
2999}
3000
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003001/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003002__LJMP static int hlua_channel_get(lua_State *L)
3003{
3004 MAY_LJMP(check_args(L, 1, "get"));
3005 MAY_LJMP(hlua_checkchannel(L, 1));
3006 return MAY_LJMP(hlua_channel_get_yield(L, 0, 0));
3007}
3008
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003009/* This functions consumes and returns one line. If the channel is closed,
3010 * and the last data does not contains a final '\n', the data are returned
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003011 * without the final '\n'. When no more data are available, it returns nil
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003012 * value.
3013 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003014__LJMP static int hlua_channel_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003015{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003016 char *blk1;
3017 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003018 size_t len1;
3019 size_t len2;
3020 size_t len;
Willy Tarreau47860ed2015-03-10 14:07:50 +01003021 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003022 int ret;
3023 luaL_Buffer b;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003024
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003025 chn = MAY_LJMP(hlua_checkchannel(L, 1));
3026
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01003027 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02003028 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003029 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003030 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003031
Willy Tarreau06d80a92017-10-19 14:32:15 +02003032 ret = ci_getline_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003033 if (ret == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02003034 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_getline_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003035
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003036 if (ret == -1) {
3037 lua_pushnil(L);
3038 return 1;
3039 }
3040
3041 luaL_buffinit(L, &b);
3042 luaL_addlstring(&b, blk1, len1);
3043 len = len1;
3044 if (unlikely(ret == 2)) {
3045 luaL_addlstring(&b, blk2, len2);
3046 len += len2;
3047 }
3048 luaL_pushresult(&b);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003049 b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn) + len, NULL, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003050 return 1;
3051}
3052
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003053/* Check arguments for the function "hlua_channel_getline_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003054__LJMP static int hlua_channel_getline(lua_State *L)
3055{
3056 MAY_LJMP(check_args(L, 1, "getline"));
3057 MAY_LJMP(hlua_checkchannel(L, 1));
3058 return MAY_LJMP(hlua_channel_getline_yield(L, 0, 0));
3059}
3060
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003061/* This function takes a string as input, and append it at the
3062 * input side of channel. If the data is too big, but a space
3063 * is probably available after sending some data, the function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003064 * yields. If the data is bigger than the buffer, or if the
3065 * channel is closed, it returns -1. Otherwise, it returns the
3066 * amount of data written.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003067 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003068__LJMP static int hlua_channel_append_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003069{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003070 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003071 size_t len;
3072 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3073 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3074 int ret;
3075 int max;
3076
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01003077 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02003078 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003079 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003080 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003081
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003082 /* Check if the buffer is available because HAProxy doesn't allocate
Christopher Fauleta73e59b2016-12-09 17:30:18 +01003083 * the request buffer if its not required.
3084 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003085 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01003086 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02003087 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Christopher Fauleta73e59b2016-12-09 17:30:18 +01003088 }
3089
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003090 max = channel_recv_limit(chn) - b_data(&chn->buf);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003091 if (max > len - l)
3092 max = len - l;
3093
Willy Tarreau06d80a92017-10-19 14:32:15 +02003094 ret = ci_putblk(chn, str + l, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003095 if (ret == -2 || ret == -3) {
3096 lua_pushinteger(L, -1);
3097 return 1;
3098 }
Willy Tarreaubc18da12015-03-13 14:00:47 +01003099 if (ret == -1) {
3100 chn->flags |= CF_WAKE_WRITE;
Willy Tarreau9635e032018-10-16 17:52:55 +02003101 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Willy Tarreaubc18da12015-03-13 14:00:47 +01003102 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003103 l += ret;
3104 lua_pop(L, 1);
3105 lua_pushinteger(L, l);
3106
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003107 max = channel_recv_limit(chn) - b_data(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003108 if (max == 0 && co_data(chn) == 0) {
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003109 /* There are no space available, and the output buffer is empty.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003110 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003111 * we return the amount of copied data.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003112 */
3113 return 1;
3114 }
3115 if (l < len)
Willy Tarreau9635e032018-10-16 17:52:55 +02003116 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003117 return 1;
3118}
3119
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003120/* Just a wrapper of "hlua_channel_append_yield". It returns the length
3121 * of the written string, or -1 if the channel is closed or if the
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003122 * buffer size is too little for the data.
3123 */
3124__LJMP static int hlua_channel_append(lua_State *L)
3125{
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003126 size_t len;
3127
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003128 MAY_LJMP(check_args(L, 2, "append"));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003129 MAY_LJMP(hlua_checkchannel(L, 1));
3130 MAY_LJMP(luaL_checklstring(L, 2, &len));
3131 MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003132 lua_pushinteger(L, 0);
3133
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003134 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003135}
3136
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003137/* Just a wrapper of "hlua_channel_append_yield". This wrapper starts
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003138 * his process by cleaning the buffer. The result is a replacement
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003139 * of the current data. It returns the length of the written string,
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003140 * or -1 if the channel is closed or if the buffer size is too
3141 * little for the data.
3142 */
3143__LJMP static int hlua_channel_set(lua_State *L)
3144{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003145 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003146
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003147 MAY_LJMP(check_args(L, 2, "set"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003148 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003149 lua_pushinteger(L, 0);
3150
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01003151 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02003152 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003153 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003154 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003155
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003156 b_set_data(&chn->buf, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003157
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003158 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003159}
3160
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003161/* Append data in the output side of the buffer. This data is immediately
3162 * sent. The function returns the amount of data written. If the buffer
3163 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003164 * if the channel is closed.
3165 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003166__LJMP static int hlua_channel_send_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003167{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003168 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003169 size_t len;
3170 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3171 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3172 int max;
Thierry Fournier4234dbd2020-11-28 13:18:23 +01003173 struct hlua *hlua;
3174
3175 /* Get hlua struct, or NULL if we execute from main lua state */
3176 hlua = hlua_gethlua(L);
3177 if (!hlua) {
3178 lua_pushnil(L);
3179 return 1;
3180 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003181
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01003182 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02003183 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003184 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003185 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003186
Willy Tarreau47860ed2015-03-10 14:07:50 +01003187 if (unlikely(channel_output_closed(chn))) {
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003188 lua_pushinteger(L, -1);
3189 return 1;
3190 }
3191
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003192 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003193 * the request buffer if its not required.
3194 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003195 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01003196 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02003197 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003198 }
3199
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003200 /* The written data will be immediately sent, so we can check
3201 * the available space without taking in account the reserve.
3202 * The reserve is guaranteed for the processing of incoming
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003203 * data, because the buffer will be flushed.
3204 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003205 max = b_room(&chn->buf);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003206
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003207 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003208 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003209 * we return the amount of copied data.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003210 */
Willy Tarreaua79021a2018-06-15 18:07:57 +02003211 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003212 return 1;
3213
3214 /* Adjust the real required length. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003215 if (max > len - l)
3216 max = len - l;
3217
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003218 /* The buffer available size may be not contiguous. This test
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003219 * detects a non contiguous buffer and realign it.
3220 */
Willy Tarreau3f679992018-06-15 15:06:42 +02003221 if (ci_space_for_replace(chn) < max)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003222 channel_slow_realign(chn, trash.area);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003223
3224 /* Copy input data in the buffer. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003225 max = b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn), str + l, max);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003226
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003227 /* buffer replace considers that the input part is filled.
3228 * so, I must forward these new data in the output part.
3229 */
Willy Tarreaubcbd3932018-06-06 07:13:22 +02003230 c_adv(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003231
3232 l += max;
3233 lua_pop(L, 1);
3234 lua_pushinteger(L, l);
3235
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003236 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003237 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003238 * we return the amount of copied data.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003239 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003240 max = b_room(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003241 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003242 return 1;
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003243
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003244 if (l < len) {
3245 /* If we are waiting for space in the response buffer, we
3246 * must set the flag WAKERESWR. This flag required the task
3247 * wake up if any activity is detected on the response buffer.
3248 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003249 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003250 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003251 else
3252 HLUA_SET_WAKEREQWR(hlua);
Willy Tarreau9635e032018-10-16 17:52:55 +02003253 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003254 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003255
3256 return 1;
3257}
3258
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003259/* Just a wrapper of "_hlua_channel_send". This wrapper permits
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003260 * yield the LUA process, and resume it without checking the
3261 * input arguments.
3262 */
3263__LJMP static int hlua_channel_send(lua_State *L)
3264{
3265 MAY_LJMP(check_args(L, 2, "send"));
3266 lua_pushinteger(L, 0);
3267
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003268 return MAY_LJMP(hlua_channel_send_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003269}
3270
3271/* This function forward and amount of butes. The data pass from
3272 * the input side of the buffer to the output side, and can be
3273 * forwarded. This function never fails.
3274 *
3275 * The Lua function takes an amount of bytes to be forwarded in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003276 * input. It returns the number of bytes forwarded.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003277 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003278__LJMP static int hlua_channel_forward_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003279{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003280 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003281 int len;
3282 int l;
3283 int max;
Thierry Fournier4234dbd2020-11-28 13:18:23 +01003284 struct hlua *hlua;
3285
3286 /* Get hlua struct, or NULL if we execute from main lua state */
3287 hlua = hlua_gethlua(L);
3288 if (!hlua)
3289 return 1;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003290
3291 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet3f829a42018-12-13 21:56:45 +01003292
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01003293 if (IS_HTX_STRM(chn_strm(chn))) {
Thierry Fournier77016da2020-08-15 14:35:51 +02003294 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003295 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003296 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003297
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003298 len = MAY_LJMP(luaL_checkinteger(L, 2));
3299 l = MAY_LJMP(luaL_checkinteger(L, -1));
3300
3301 max = len - l;
Willy Tarreaua79021a2018-06-15 18:07:57 +02003302 if (max > ci_data(chn))
3303 max = ci_data(chn);
Willy Tarreau47860ed2015-03-10 14:07:50 +01003304 channel_forward(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003305 l += max;
3306
3307 lua_pop(L, 1);
3308 lua_pushinteger(L, l);
3309
3310 /* Check if it miss bytes to forward. */
3311 if (l < len) {
3312 /* The the input channel or the output channel are closed, we
3313 * must return the amount of data forwarded.
3314 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003315 if (channel_input_closed(chn) || channel_output_closed(chn))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003316 return 1;
3317
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003318 /* If we are waiting for space data in the response buffer, we
3319 * must set the flag WAKERESWR. This flag required the task
3320 * wake up if any activity is detected on the response buffer.
3321 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003322 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003323 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003324 else
3325 HLUA_SET_WAKEREQWR(hlua);
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003326
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003327 /* Otherwise, we can yield waiting for new data in the inpout side. */
Willy Tarreau9635e032018-10-16 17:52:55 +02003328 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_forward_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003329 }
3330
3331 return 1;
3332}
3333
3334/* Just check the input and prepare the stack for the previous
3335 * function "hlua_channel_forward_yield"
3336 */
3337__LJMP static int hlua_channel_forward(lua_State *L)
3338{
3339 MAY_LJMP(check_args(L, 2, "forward"));
3340 MAY_LJMP(hlua_checkchannel(L, 1));
3341 MAY_LJMP(luaL_checkinteger(L, 2));
3342
3343 lua_pushinteger(L, 0);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003344 return MAY_LJMP(hlua_channel_forward_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003345}
3346
3347/* Just returns the number of bytes available in the input
3348 * side of the buffer. This function never fails.
3349 */
3350__LJMP static int hlua_channel_get_in_len(lua_State *L)
3351{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003352 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003353
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003354 MAY_LJMP(check_args(L, 1, "get_in_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003355 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Fauleta3ceac12018-12-14 13:39:09 +01003356 if (IS_HTX_STRM(chn_strm(chn))) {
3357 struct htx *htx = htxbuf(&chn->buf);
3358 lua_pushinteger(L, htx->data - co_data(chn));
3359 }
3360 else
3361 lua_pushinteger(L, ci_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003362 return 1;
3363}
3364
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003365/* Returns true if the channel is full. */
3366__LJMP static int hlua_channel_is_full(lua_State *L)
3367{
3368 struct channel *chn;
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003369
3370 MAY_LJMP(check_args(L, 1, "is_full"));
3371 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet0ec740e2020-02-26 11:59:19 +01003372 /* ignore the reserve, we are not on a producer side (ie in an
3373 * applet).
3374 */
3375 lua_pushboolean(L, channel_full(chn, 0));
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003376 return 1;
3377}
3378
Christopher Faulet2ac9ba22020-02-25 10:15:50 +01003379/* Returns true if the channel is the response channel. */
3380__LJMP static int hlua_channel_is_resp(lua_State *L)
3381{
3382 struct channel *chn;
3383
3384 MAY_LJMP(check_args(L, 1, "is_resp"));
3385 chn = MAY_LJMP(hlua_checkchannel(L, 1));
3386
3387 lua_pushboolean(L, !!(chn->flags & CF_ISRESP));
3388 return 1;
3389}
3390
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003391/* Just returns the number of bytes available in the output
3392 * side of the buffer. This function never fails.
3393 */
3394__LJMP static int hlua_channel_get_out_len(lua_State *L)
3395{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003396 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003397
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003398 MAY_LJMP(check_args(L, 1, "get_out_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003399 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Willy Tarreaua79021a2018-06-15 18:07:57 +02003400 lua_pushinteger(L, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003401 return 1;
3402}
3403
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003404/*
3405 *
3406 *
3407 * Class Fetches
3408 *
3409 *
3410 */
3411
3412/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003413 * a class stream, otherwise it throws an error.
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003414 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003415__LJMP static struct hlua_smp *hlua_checkfetches(lua_State *L, int ud)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003416{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003417 return MAY_LJMP(hlua_checkudata(L, ud, class_fetches_ref));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003418}
3419
3420/* This function creates and push in the stack a fetch object according
3421 * with a current TXN.
3422 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003423static int hlua_fetches_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003424{
Willy Tarreau7073c472015-04-06 11:15:40 +02003425 struct hlua_smp *hsmp;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003426
3427 /* Check stack size. */
3428 if (!lua_checkstack(L, 3))
3429 return 0;
3430
3431 /* Create the object: obj[0] = userdata.
3432 * Note that the base of the Fetches object is the
3433 * transaction object.
3434 */
3435 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003436 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003437 lua_rawseti(L, -2, 0);
3438
Willy Tarreau7073c472015-04-06 11:15:40 +02003439 hsmp->s = txn->s;
3440 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003441 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003442 hsmp->flags = flags;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003443
3444 /* Pop a class sesison metatable and affect it to the userdata. */
3445 lua_rawgeti(L, LUA_REGISTRYINDEX, class_fetches_ref);
3446 lua_setmetatable(L, -2);
3447
3448 return 1;
3449}
3450
3451/* This function is an LUA binding. It is called with each sample-fetch.
3452 * It uses closure argument to store the associated sample-fetch. It
3453 * returns only one argument or throws an error. An error is thrown
3454 * only if an error is encountered during the argument parsing. If
3455 * the "sample-fetch" function fails, nil is returned.
3456 */
3457__LJMP static int hlua_run_sample_fetch(lua_State *L)
3458{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003459 struct hlua_smp *hsmp;
Willy Tarreau2ec22742015-03-10 14:27:20 +01003460 struct sample_fetch *f;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003461 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003462 int i;
3463 struct sample smp;
3464
3465 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003466 f = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003467
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003468 /* Get traditional arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003469 hsmp = MAY_LJMP(hlua_checkfetches(L, 1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003470
Thierry FOURNIERca988662015-12-20 18:43:03 +01003471 /* Check execution authorization. */
3472 if (f->use & SMP_USE_HTTP_ANY &&
3473 !(hsmp->flags & HLUA_F_MAY_USE_HTTP)) {
3474 lua_pushfstring(L, "the sample-fetch '%s' needs an HTTP parser which "
3475 "is not available in Lua services", f->kw);
3476 WILL_LJMP(lua_error(L));
3477 }
3478
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003479 /* Get extra arguments. */
3480 for (i = 0; i < lua_gettop(L) - 1; i++) {
3481 if (i >= ARGM_NBARGS)
3482 break;
3483 hlua_lua2arg(L, i + 2, &args[i]);
3484 }
3485 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003486 args[i].data.str.area = NULL;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003487
3488 /* Check arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003489 MAY_LJMP(hlua_lua2arg_check(L, 2, args, f->arg_mask, hsmp->p));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003490
3491 /* Run the special args checker. */
Willy Tarreau2ec22742015-03-10 14:27:20 +01003492 if (f->val_args && !f->val_args(args, NULL)) {
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003493 lua_pushfstring(L, "error in arguments");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003494 goto error;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003495 }
3496
3497 /* Initialise the sample. */
3498 memset(&smp, 0, sizeof(smp));
3499
3500 /* Run the sample fetch process. */
Willy Tarreau1777ea62016-03-10 16:15:46 +01003501 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
Thierry FOURNIER0786d052015-05-11 15:42:45 +02003502 if (!f->process(args, &smp, f->kw, f->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003503 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003504 lua_pushstring(L, "");
3505 else
3506 lua_pushnil(L);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003507 goto end;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003508 }
3509
3510 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003511 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003512 hlua_smp2lua_str(L, &smp);
3513 else
3514 hlua_smp2lua(L, &smp);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003515
3516 end:
3517 for (i = 0; args[i].type != ARGT_STOP; i++) {
3518 if (args[i].type == ARGT_STR)
3519 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003520 else if (args[i].type == ARGT_REG)
3521 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003522 }
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003523 return 1;
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003524
3525 error:
3526 for (i = 0; args[i].type != ARGT_STOP; i++) {
3527 if (args[i].type == ARGT_STR)
3528 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003529 else if (args[i].type == ARGT_REG)
3530 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003531 }
3532 WILL_LJMP(lua_error(L));
3533 return 0; /* Never reached */
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003534}
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003535
3536/*
3537 *
3538 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003539 * Class Converters
3540 *
3541 *
3542 */
3543
3544/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003545 * a class stream, otherwise it throws an error.
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003546 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003547__LJMP static struct hlua_smp *hlua_checkconverters(lua_State *L, int ud)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003548{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003549 return MAY_LJMP(hlua_checkudata(L, ud, class_converters_ref));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003550}
3551
3552/* This function creates and push in the stack a Converters object
3553 * according with a current TXN.
3554 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003555static int hlua_converters_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003556{
Willy Tarreau7073c472015-04-06 11:15:40 +02003557 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003558
3559 /* Check stack size. */
3560 if (!lua_checkstack(L, 3))
3561 return 0;
3562
3563 /* Create the object: obj[0] = userdata.
3564 * Note that the base of the Converters object is the
3565 * same than the TXN object.
3566 */
3567 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003568 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003569 lua_rawseti(L, -2, 0);
3570
Willy Tarreau7073c472015-04-06 11:15:40 +02003571 hsmp->s = txn->s;
3572 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003573 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003574 hsmp->flags = flags;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003575
Willy Tarreau87b09662015-04-03 00:22:06 +02003576 /* Pop a class stream metatable and affect it to the table. */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003577 lua_rawgeti(L, LUA_REGISTRYINDEX, class_converters_ref);
3578 lua_setmetatable(L, -2);
3579
3580 return 1;
3581}
3582
3583/* This function is an LUA binding. It is called with each converter.
3584 * It uses closure argument to store the associated converter. It
3585 * returns only one argument or throws an error. An error is thrown
3586 * only if an error is encountered during the argument parsing. If
3587 * the converter function function fails, nil is returned.
3588 */
3589__LJMP static int hlua_run_sample_conv(lua_State *L)
3590{
Willy Tarreauda5f1082015-04-06 11:17:13 +02003591 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003592 struct sample_conv *conv;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003593 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003594 int i;
3595 struct sample smp;
3596
3597 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003598 conv = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003599
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003600 /* Get traditional arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003601 hsmp = MAY_LJMP(hlua_checkconverters(L, 1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003602
3603 /* Get extra arguments. */
3604 for (i = 0; i < lua_gettop(L) - 2; i++) {
3605 if (i >= ARGM_NBARGS)
3606 break;
3607 hlua_lua2arg(L, i + 3, &args[i]);
3608 }
3609 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003610 args[i].data.str.area = NULL;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003611
3612 /* Check arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003613 MAY_LJMP(hlua_lua2arg_check(L, 3, args, conv->arg_mask, hsmp->p));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003614
3615 /* Run the special args checker. */
3616 if (conv->val_args && !conv->val_args(args, conv, "", 0, NULL)) {
3617 hlua_pusherror(L, "error in arguments");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003618 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003619 }
3620
3621 /* Initialise the sample. */
Amaury Denoyellebc0af6a2020-10-29 17:21:20 +01003622 memset(&smp, 0, sizeof(smp));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003623 if (!hlua_lua2smp(L, 2, &smp)) {
3624 hlua_pusherror(L, "error in the input argument");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003625 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003626 }
3627
Willy Tarreau1777ea62016-03-10 16:15:46 +01003628 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
3629
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003630 /* Apply expected cast. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003631 if (!sample_casts[smp.data.type][conv->in_type]) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003632 hlua_pusherror(L, "invalid input argument: cannot cast '%s' to '%s'",
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003633 smp_to_type[smp.data.type], smp_to_type[conv->in_type]);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003634 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003635 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003636 if (sample_casts[smp.data.type][conv->in_type] != c_none &&
3637 !sample_casts[smp.data.type][conv->in_type](&smp)) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003638 hlua_pusherror(L, "error during the input argument casting");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003639 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003640 }
3641
3642 /* Run the sample conversion process. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02003643 if (!conv->process(args, &smp, conv->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003644 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003645 lua_pushstring(L, "");
3646 else
Willy Tarreaua678b432015-08-28 10:14:59 +02003647 lua_pushnil(L);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003648 goto end;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003649 }
3650
3651 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003652 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003653 hlua_smp2lua_str(L, &smp);
3654 else
3655 hlua_smp2lua(L, &smp);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003656 end:
3657 for (i = 0; args[i].type != ARGT_STOP; i++) {
3658 if (args[i].type == ARGT_STR)
3659 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003660 else if (args[i].type == ARGT_REG)
3661 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003662 }
Willy Tarreaua678b432015-08-28 10:14:59 +02003663 return 1;
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003664
3665 error:
3666 for (i = 0; args[i].type != ARGT_STOP; i++) {
3667 if (args[i].type == ARGT_STR)
3668 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003669 else if (args[i].type == ARGT_REG)
3670 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003671 }
3672 WILL_LJMP(lua_error(L));
3673 return 0; /* Never reached */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003674}
3675
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003676/*
3677 *
3678 *
3679 * Class AppletTCP
3680 *
3681 *
3682 */
3683
3684/* Returns a struct hlua_txn if the stack entry "ud" is
3685 * a class stream, otherwise it throws an error.
3686 */
3687__LJMP static struct hlua_appctx *hlua_checkapplet_tcp(lua_State *L, int ud)
3688{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003689 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_tcp_ref));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003690}
3691
3692/* This function creates and push in the stack an Applet object
3693 * according with a current TXN.
3694 */
3695static int hlua_applet_tcp_new(lua_State *L, struct appctx *ctx)
3696{
3697 struct hlua_appctx *appctx;
3698 struct stream_interface *si = ctx->owner;
3699 struct stream *s = si_strm(si);
3700 struct proxy *p = s->be;
3701
3702 /* Check stack size. */
3703 if (!lua_checkstack(L, 3))
3704 return 0;
3705
3706 /* Create the object: obj[0] = userdata.
3707 * Note that the base of the Converters object is the
3708 * same than the TXN object.
3709 */
3710 lua_newtable(L);
3711 appctx = lua_newuserdata(L, sizeof(*appctx));
3712 lua_rawseti(L, -2, 0);
3713 appctx->appctx = ctx;
3714 appctx->htxn.s = s;
3715 appctx->htxn.p = p;
3716
3717 /* Create the "f" field that contains a list of fetches. */
3718 lua_pushstring(L, "f");
3719 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3720 return 0;
3721 lua_settable(L, -3);
3722
3723 /* Create the "sf" field that contains a list of stringsafe fetches. */
3724 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003725 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003726 return 0;
3727 lua_settable(L, -3);
3728
3729 /* Create the "c" field that contains a list of converters. */
3730 lua_pushstring(L, "c");
3731 if (!hlua_converters_new(L, &appctx->htxn, 0))
3732 return 0;
3733 lua_settable(L, -3);
3734
3735 /* Create the "sc" field that contains a list of stringsafe converters. */
3736 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003737 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003738 return 0;
3739 lua_settable(L, -3);
3740
3741 /* Pop a class stream metatable and affect it to the table. */
3742 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_tcp_ref);
3743 lua_setmetatable(L, -2);
3744
3745 return 1;
3746}
3747
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003748__LJMP static int hlua_applet_tcp_set_var(lua_State *L)
3749{
3750 struct hlua_appctx *appctx;
3751 struct stream *s;
3752 const char *name;
3753 size_t len;
3754 struct sample smp;
3755
Tim Duesterhus4e172c92020-05-19 13:49:42 +02003756 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
3757 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003758
3759 /* It is useles to retrieve the stream, but this function
3760 * runs only in a stream context.
3761 */
3762 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3763 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3764 s = appctx->htxn.s;
3765
3766 /* Converts the third argument in a sample. */
Amaury Denoyellebc0af6a2020-10-29 17:21:20 +01003767 memset(&smp, 0, sizeof(smp));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003768 hlua_lua2smp(L, 3, &smp);
3769
3770 /* Store the sample in a variable. */
3771 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02003772
3773 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
3774 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
3775 else
3776 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
3777
Tim Duesterhus84ebc132020-05-19 13:49:41 +02003778 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003779}
3780
3781__LJMP static int hlua_applet_tcp_unset_var(lua_State *L)
3782{
3783 struct hlua_appctx *appctx;
3784 struct stream *s;
3785 const char *name;
3786 size_t len;
3787 struct sample smp;
3788
3789 MAY_LJMP(check_args(L, 2, "unset_var"));
3790
3791 /* It is useles to retrieve the stream, but this function
3792 * runs only in a stream context.
3793 */
3794 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3795 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3796 s = appctx->htxn.s;
3797
3798 /* Unset the variable. */
3799 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02003800 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
3801 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003802}
3803
3804__LJMP static int hlua_applet_tcp_get_var(lua_State *L)
3805{
3806 struct hlua_appctx *appctx;
3807 struct stream *s;
3808 const char *name;
3809 size_t len;
3810 struct sample smp;
3811
3812 MAY_LJMP(check_args(L, 2, "get_var"));
3813
3814 /* It is useles to retrieve the stream, but this function
3815 * runs only in a stream context.
3816 */
3817 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3818 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3819 s = appctx->htxn.s;
3820
3821 smp_set_owner(&smp, s->be, s->sess, s, 0);
3822 if (!vars_get_by_name(name, len, &smp)) {
3823 lua_pushnil(L);
3824 return 1;
3825 }
3826
3827 return hlua_smp2lua(L, &smp);
3828}
3829
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003830__LJMP static int hlua_applet_tcp_set_priv(lua_State *L)
3831{
3832 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3833 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003834 struct hlua *hlua;
3835
3836 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003837 if (!s->hlua)
3838 return 0;
3839 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003840
3841 MAY_LJMP(check_args(L, 2, "set_priv"));
3842
3843 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02003844 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003845
3846 /* Get and store new value. */
3847 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
3848 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
3849
3850 return 0;
3851}
3852
3853__LJMP static int hlua_applet_tcp_get_priv(lua_State *L)
3854{
3855 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3856 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003857 struct hlua *hlua;
3858
3859 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003860 if (!s->hlua) {
3861 lua_pushnil(L);
3862 return 1;
3863 }
3864 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003865
3866 /* Push configuration index in the stack. */
3867 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
3868
3869 return 1;
3870}
3871
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003872/* If expected data not yet available, it returns a yield. This function
3873 * consumes the data in the buffer. It returns a string containing the
3874 * data. This string can be empty.
3875 */
3876__LJMP static int hlua_applet_tcp_getline_yield(lua_State *L, int status, lua_KContext ctx)
3877{
3878 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3879 struct stream_interface *si = appctx->appctx->owner;
3880 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003881 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003882 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003883 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003884 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003885
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003886 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003887 ret = co_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003888
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003889 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003890 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003891 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003892 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_getline_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003893 }
3894
3895 /* End of data: commit the total strings and return. */
3896 if (ret < 0) {
3897 luaL_pushresult(&appctx->b);
3898 return 1;
3899 }
3900
3901 /* Ensure that the block 2 length is usable. */
3902 if (ret == 1)
3903 len2 = 0;
3904
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07003905 /* don't check the max length read and don't check. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003906 luaL_addlstring(&appctx->b, blk1, len1);
3907 luaL_addlstring(&appctx->b, blk2, len2);
3908
3909 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003910 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003911 luaL_pushresult(&appctx->b);
3912 return 1;
3913}
3914
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003915/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003916__LJMP static int hlua_applet_tcp_getline(lua_State *L)
3917{
3918 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3919
3920 /* Initialise the string catenation. */
3921 luaL_buffinit(L, &appctx->b);
3922
3923 return MAY_LJMP(hlua_applet_tcp_getline_yield(L, 0, 0));
3924}
3925
3926/* If expected data not yet available, it returns a yield. This function
3927 * consumes the data in the buffer. It returns a string containing the
3928 * data. This string can be empty.
3929 */
3930__LJMP static int hlua_applet_tcp_recv_yield(lua_State *L, int status, lua_KContext ctx)
3931{
3932 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3933 struct stream_interface *si = appctx->appctx->owner;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003934 size_t len = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003935 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003936 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003937 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003938 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003939 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003940
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003941 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003942 ret = co_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003943
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003944 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003945 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003946 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003947 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003948 }
3949
3950 /* End of data: commit the total strings and return. */
3951 if (ret < 0) {
3952 luaL_pushresult(&appctx->b);
3953 return 1;
3954 }
3955
3956 /* Ensure that the block 2 length is usable. */
3957 if (ret == 1)
3958 len2 = 0;
3959
3960 if (len == -1) {
3961
3962 /* If len == -1, catenate all the data avalaile and
3963 * yield because we want to get all the data until
3964 * the end of data stream.
3965 */
3966 luaL_addlstring(&appctx->b, blk1, len1);
3967 luaL_addlstring(&appctx->b, blk2, len2);
Willy Tarreau06d80a92017-10-19 14:32:15 +02003968 co_skip(si_oc(si), len1 + len2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003969 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003970 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003971
3972 } else {
3973
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003974 /* Copy the first block caping to the length required. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003975 if (len1 > len)
3976 len1 = len;
3977 luaL_addlstring(&appctx->b, blk1, len1);
3978 len -= len1;
3979
3980 /* Copy the second block. */
3981 if (len2 > len)
3982 len2 = len;
3983 luaL_addlstring(&appctx->b, blk2, len2);
3984 len -= len2;
3985
3986 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003987 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003988
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003989 /* If there is no other data available, yield waiting for new data. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003990 if (len > 0) {
3991 lua_pushinteger(L, len);
3992 lua_replace(L, 2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003993 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003994 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003995 }
3996
3997 /* return the result. */
3998 luaL_pushresult(&appctx->b);
3999 return 1;
4000 }
4001
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004002 /* we never execute this */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02004003 hlua_pusherror(L, "Lua: internal error");
4004 WILL_LJMP(lua_error(L));
4005 return 0;
4006}
4007
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004008/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02004009__LJMP static int hlua_applet_tcp_recv(lua_State *L)
4010{
4011 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
4012 int len = -1;
4013
4014 if (lua_gettop(L) > 2)
4015 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
4016 if (lua_gettop(L) >= 2) {
4017 len = MAY_LJMP(luaL_checkinteger(L, 2));
4018 lua_pop(L, 1);
4019 }
4020
4021 /* Confirm or set the required length */
4022 lua_pushinteger(L, len);
4023
4024 /* Initialise the string catenation. */
4025 luaL_buffinit(L, &appctx->b);
4026
4027 return MAY_LJMP(hlua_applet_tcp_recv_yield(L, 0, 0));
4028}
4029
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004030/* Append data in the output side of the buffer. This data is immediately
4031 * sent. The function returns the amount of data written. If the buffer
4032 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02004033 * if the channel is closed.
4034 */
4035__LJMP static int hlua_applet_tcp_send_yield(lua_State *L, int status, lua_KContext ctx)
4036{
4037 size_t len;
4038 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
4039 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
4040 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4041 struct stream_interface *si = appctx->appctx->owner;
4042 struct channel *chn = si_ic(si);
4043 int max;
4044
4045 /* Get the max amount of data which can write as input in the channel. */
4046 max = channel_recv_max(chn);
4047 if (max > (len - l))
4048 max = len - l;
4049
4050 /* Copy data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004051 ci_putblk(chn, str + l, max);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02004052
4053 /* update counters. */
4054 l += max;
4055 lua_pop(L, 1);
4056 lua_pushinteger(L, l);
4057
4058 /* If some data is not send, declares the situation to the
4059 * applet, and returns a yield.
4060 */
4061 if (l < len) {
Willy Tarreaudb398432018-11-15 11:08:52 +01004062 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004063 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02004064 }
4065
4066 return 1;
4067}
4068
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004069/* Just a wrapper of "hlua_applet_tcp_send_yield". This wrapper permits
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02004070 * yield the LUA process, and resume it without checking the
4071 * input arguments.
4072 */
4073__LJMP static int hlua_applet_tcp_send(lua_State *L)
4074{
4075 MAY_LJMP(check_args(L, 2, "send"));
4076 lua_pushinteger(L, 0);
4077
4078 return MAY_LJMP(hlua_applet_tcp_send_yield(L, 0, 0));
4079}
4080
Thierry FOURNIER594afe72015-03-10 23:58:30 +01004081/*
4082 *
4083 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004084 * Class AppletHTTP
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004085 *
4086 *
4087 */
4088
4089/* Returns a struct hlua_txn if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02004090 * a class stream, otherwise it throws an error.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004091 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004092__LJMP static struct hlua_appctx *hlua_checkapplet_http(lua_State *L, int ud)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004093{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02004094 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_http_ref));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004095}
4096
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004097/* This function creates and push in the stack an Applet object
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004098 * according with a current TXN.
4099 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004100static int hlua_applet_http_new(lua_State *L, struct appctx *ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004101{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004102 struct hlua_appctx *appctx;
Thierry FOURNIER841475e2015-12-11 17:10:09 +01004103 struct hlua_txn htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004104 struct stream_interface *si = ctx->owner;
4105 struct stream *s = si_strm(si);
4106 struct proxy *px = s->be;
Christopher Fauleta2097962019-07-15 16:25:33 +02004107 struct htx *htx;
4108 struct htx_blk *blk;
4109 struct htx_sl *sl;
4110 struct ist path;
4111 unsigned long long len = 0;
4112 int32_t pos;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004113
4114 /* Check stack size. */
4115 if (!lua_checkstack(L, 3))
4116 return 0;
4117
4118 /* Create the object: obj[0] = userdata.
4119 * Note that the base of the Converters object is the
4120 * same than the TXN object.
4121 */
4122 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004123 appctx = lua_newuserdata(L, sizeof(*appctx));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004124 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004125 appctx->appctx = ctx;
4126 appctx->appctx->ctx.hlua_apphttp.status = 200; /* Default status code returned. */
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004127 appctx->appctx->ctx.hlua_apphttp.reason = NULL; /* Use default reason based on status */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004128 appctx->htxn.s = s;
4129 appctx->htxn.p = px;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004130
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004131 /* Create the "f" field that contains a list of fetches. */
4132 lua_pushstring(L, "f");
4133 if (!hlua_fetches_new(L, &appctx->htxn, 0))
4134 return 0;
4135 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004136
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004137 /* Create the "sf" field that contains a list of stringsafe fetches. */
4138 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004139 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004140 return 0;
4141 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004142
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004143 /* Create the "c" field that contains a list of converters. */
4144 lua_pushstring(L, "c");
4145 if (!hlua_converters_new(L, &appctx->htxn, 0))
4146 return 0;
4147 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004148
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004149 /* Create the "sc" field that contains a list of stringsafe converters. */
4150 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004151 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004152 return 0;
4153 lua_settable(L, -3);
Willy Tarreaueee5b512015-04-03 23:46:31 +02004154
Christopher Fauleta2097962019-07-15 16:25:33 +02004155 htx = htxbuf(&s->req.buf);
4156 blk = htx_get_first_blk(htx);
Christopher Fauletea009732019-11-18 15:50:25 +01004157 BUG_ON(!blk || htx_get_blk_type(blk) != HTX_BLK_REQ_SL);
Christopher Fauleta2097962019-07-15 16:25:33 +02004158 sl = htx_get_blk_ptr(htx, blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004159
Christopher Fauleta2097962019-07-15 16:25:33 +02004160 /* Stores the request method. */
4161 lua_pushstring(L, "method");
4162 lua_pushlstring(L, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl));
4163 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004164
Christopher Fauleta2097962019-07-15 16:25:33 +02004165 /* Stores the http version. */
4166 lua_pushstring(L, "version");
4167 lua_pushlstring(L, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl));
4168 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004169
Christopher Fauleta2097962019-07-15 16:25:33 +02004170 /* creates an array of headers. hlua_http_get_headers() crates and push
4171 * the array on the top of the stack.
4172 */
4173 lua_pushstring(L, "headers");
4174 htxn.s = s;
4175 htxn.p = px;
4176 htxn.dir = SMP_OPT_DIR_REQ;
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004177 if (!hlua_http_get_headers(L, &htxn.s->txn->req))
Christopher Fauleta2097962019-07-15 16:25:33 +02004178 return 0;
4179 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004180
Christopher Fauleta2097962019-07-15 16:25:33 +02004181 path = http_get_path(htx_sl_req_uri(sl));
Tim Duesterhused526372020-03-05 17:56:33 +01004182 if (isttest(path)) {
Christopher Fauleta2097962019-07-15 16:25:33 +02004183 char *p, *q, *end;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004184
Christopher Fauleta2097962019-07-15 16:25:33 +02004185 p = path.ptr;
4186 end = path.ptr + path.len;
4187 q = p;
4188 while (q < end && *q != '?')
4189 q++;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004190
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004191 /* Stores the request path. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004192 lua_pushstring(L, "path");
4193 lua_pushlstring(L, p, q - p);
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004194 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004195
Christopher Fauleta2097962019-07-15 16:25:33 +02004196 /* Stores the query string. */
4197 lua_pushstring(L, "qs");
4198 if (*q == '?')
4199 q++;
4200 lua_pushlstring(L, q, end - q);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004201 lua_settable(L, -3);
Christopher Fauleta2097962019-07-15 16:25:33 +02004202 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004203
Christopher Fauleta2097962019-07-15 16:25:33 +02004204 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4205 struct htx_blk *blk = htx_get_blk(htx, pos);
4206 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004207
Christopher Fauletd1ac2b92020-12-02 19:12:22 +01004208 if (type == HTX_BLK_TLR || type == HTX_BLK_EOT)
Christopher Fauleta2097962019-07-15 16:25:33 +02004209 break;
4210 if (type == HTX_BLK_DATA)
4211 len += htx_get_blksz(blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004212 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004213 if (htx->extra != ULLONG_MAX)
4214 len += htx->extra;
4215
4216 /* Stores the request path. */
4217 lua_pushstring(L, "length");
4218 lua_pushinteger(L, len);
4219 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004220
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004221 /* Create an empty array of HTTP request headers. */
4222 lua_pushstring(L, "response");
4223 lua_newtable(L);
4224 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004225
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004226 /* Pop a class stream metatable and affect it to the table. */
4227 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_http_ref);
4228 lua_setmetatable(L, -2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004229
4230 return 1;
4231}
4232
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004233__LJMP static int hlua_applet_http_set_var(lua_State *L)
4234{
4235 struct hlua_appctx *appctx;
4236 struct stream *s;
4237 const char *name;
4238 size_t len;
4239 struct sample smp;
4240
Tim Duesterhus4e172c92020-05-19 13:49:42 +02004241 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
4242 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004243
4244 /* It is useles to retrieve the stream, but this function
4245 * runs only in a stream context.
4246 */
4247 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4248 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4249 s = appctx->htxn.s;
4250
4251 /* Converts the third argument in a sample. */
Amaury Denoyellebc0af6a2020-10-29 17:21:20 +01004252 memset(&smp, 0, sizeof(smp));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004253 hlua_lua2smp(L, 3, &smp);
4254
4255 /* Store the sample in a variable. */
4256 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02004257
4258 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
4259 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
4260 else
4261 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
4262
Tim Duesterhus84ebc132020-05-19 13:49:41 +02004263 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004264}
4265
4266__LJMP static int hlua_applet_http_unset_var(lua_State *L)
4267{
4268 struct hlua_appctx *appctx;
4269 struct stream *s;
4270 const char *name;
4271 size_t len;
4272 struct sample smp;
4273
4274 MAY_LJMP(check_args(L, 2, "unset_var"));
4275
4276 /* It is useles to retrieve the stream, but this function
4277 * runs only in a stream context.
4278 */
4279 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4280 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4281 s = appctx->htxn.s;
4282
4283 /* Unset the variable. */
4284 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02004285 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
4286 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004287}
4288
4289__LJMP static int hlua_applet_http_get_var(lua_State *L)
4290{
4291 struct hlua_appctx *appctx;
4292 struct stream *s;
4293 const char *name;
4294 size_t len;
4295 struct sample smp;
4296
4297 MAY_LJMP(check_args(L, 2, "get_var"));
4298
4299 /* It is useles to retrieve the stream, but this function
4300 * runs only in a stream context.
4301 */
4302 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4303 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4304 s = appctx->htxn.s;
4305
4306 smp_set_owner(&smp, s->be, s->sess, s, 0);
4307 if (!vars_get_by_name(name, len, &smp)) {
4308 lua_pushnil(L);
4309 return 1;
4310 }
4311
4312 return hlua_smp2lua(L, &smp);
4313}
4314
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004315__LJMP static int hlua_applet_http_set_priv(lua_State *L)
4316{
4317 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4318 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004319 struct hlua *hlua;
4320
4321 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004322 if (!s->hlua)
4323 return 0;
4324 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004325
4326 MAY_LJMP(check_args(L, 2, "set_priv"));
4327
4328 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02004329 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004330
4331 /* Get and store new value. */
4332 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
4333 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
4334
4335 return 0;
4336}
4337
4338__LJMP static int hlua_applet_http_get_priv(lua_State *L)
4339{
4340 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4341 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004342 struct hlua *hlua;
4343
4344 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004345 if (!s->hlua) {
4346 lua_pushnil(L);
4347 return 1;
4348 }
4349 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004350
4351 /* Push configuration index in the stack. */
4352 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
4353
4354 return 1;
4355}
4356
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004357/* If expected data not yet available, it returns a yield. This function
4358 * consumes the data in the buffer. It returns a string containing the
4359 * data. This string can be empty.
4360 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004361__LJMP static int hlua_applet_http_getline_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004362{
4363 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4364 struct stream_interface *si = appctx->appctx->owner;
4365 struct channel *req = si_oc(si);
4366 struct htx *htx;
4367 struct htx_blk *blk;
4368 size_t count;
4369 int stop = 0;
4370
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004371 htx = htx_from_buf(&req->buf);
4372 count = co_data(req);
Christopher Fauleta3f15502019-05-13 15:27:23 +02004373 blk = htx_get_first_blk(htx);
Christopher Fauletcc26b132018-12-18 21:20:57 +01004374
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004375 while (count && !stop && blk) {
4376 enum htx_blk_type type = htx_get_blk_type(blk);
4377 uint32_t sz = htx_get_blksz(blk);
4378 struct ist v;
4379 uint32_t vlen;
4380 char *nl;
4381
4382 vlen = sz;
4383 if (vlen > count) {
4384 if (type != HTX_BLK_DATA)
4385 break;
4386 vlen = count;
4387 }
4388
4389 switch (type) {
4390 case HTX_BLK_UNUSED:
4391 break;
4392
4393 case HTX_BLK_DATA:
4394 v = htx_get_blk_value(htx, blk);
4395 v.len = vlen;
4396 nl = istchr(v, '\n');
4397 if (nl != NULL) {
4398 stop = 1;
4399 vlen = nl - v.ptr + 1;
4400 }
4401 luaL_addlstring(&appctx->b, v.ptr, vlen);
4402 break;
4403
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004404 case HTX_BLK_TLR:
Christopher Fauletd1ac2b92020-12-02 19:12:22 +01004405 case HTX_BLK_EOT:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004406 stop = 1;
4407 break;
4408
4409 default:
4410 break;
4411 }
4412
4413 co_set_data(req, co_data(req) - vlen);
4414 count -= vlen;
4415 if (sz == vlen)
4416 blk = htx_remove_blk(htx, blk);
4417 else {
4418 htx_cut_data_blk(htx, blk, vlen);
4419 break;
4420 }
4421 }
4422
Christopher Fauleteccb31c2021-04-02 14:24:56 +02004423 /* The message was fully consumed and no more data are expected
4424 * (EOM flag set).
4425 */
4426 if (htx_is_empty(htx) && (htx->flags & HTX_FL_EOM))
4427 stop = 1;
4428
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004429 htx_to_buf(htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004430 if (!stop) {
4431 si_cant_get(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004432 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004433 }
4434
4435 /* return the result. */
4436 luaL_pushresult(&appctx->b);
4437 return 1;
4438}
4439
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004440
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004441/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004442__LJMP static int hlua_applet_http_getline(lua_State *L)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004443{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004444 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004445
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004446 /* Initialise the string catenation. */
4447 luaL_buffinit(L, &appctx->b);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004448
Christopher Fauleta2097962019-07-15 16:25:33 +02004449 return MAY_LJMP(hlua_applet_http_getline_yield(L, 0, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004450}
4451
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004452/* If expected data not yet available, it returns a yield. This function
4453 * consumes the data in the buffer. It returns a string containing the
4454 * data. This string can be empty.
4455 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004456__LJMP static int hlua_applet_http_recv_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004457{
4458 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4459 struct stream_interface *si = appctx->appctx->owner;
4460 struct channel *req = si_oc(si);
4461 struct htx *htx;
4462 struct htx_blk *blk;
4463 size_t count;
4464 int len;
4465
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004466 htx = htx_from_buf(&req->buf);
4467 len = MAY_LJMP(luaL_checkinteger(L, 2));
4468 count = co_data(req);
Christopher Faulet29f17582019-05-23 11:03:26 +02004469 blk = htx_get_head_blk(htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004470 while (count && len && blk) {
4471 enum htx_blk_type type = htx_get_blk_type(blk);
4472 uint32_t sz = htx_get_blksz(blk);
4473 struct ist v;
4474 uint32_t vlen;
4475
4476 vlen = sz;
4477 if (len > 0 && vlen > len)
4478 vlen = len;
4479 if (vlen > count) {
4480 if (type != HTX_BLK_DATA)
4481 break;
4482 vlen = count;
4483 }
4484
4485 switch (type) {
4486 case HTX_BLK_UNUSED:
4487 break;
4488
4489 case HTX_BLK_DATA:
4490 v = htx_get_blk_value(htx, blk);
4491 luaL_addlstring(&appctx->b, v.ptr, vlen);
4492 break;
4493
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004494 case HTX_BLK_TLR:
Christopher Fauletd1ac2b92020-12-02 19:12:22 +01004495 case HTX_BLK_EOT:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004496 len = 0;
4497 break;
4498
4499 default:
4500 break;
4501 }
4502
4503 co_set_data(req, co_data(req) - vlen);
4504 count -= vlen;
4505 if (len > 0)
4506 len -= vlen;
4507 if (sz == vlen)
4508 blk = htx_remove_blk(htx, blk);
4509 else {
4510 htx_cut_data_blk(htx, blk, vlen);
4511 break;
4512 }
4513 }
4514
Christopher Fauleteccb31c2021-04-02 14:24:56 +02004515 /* The message was fully consumed and no more data are expected
4516 * (EOM flag set).
4517 */
4518 if (htx_is_empty(htx) && (htx->flags & HTX_FL_EOM))
4519 len = 0;
4520
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004521 htx_to_buf(htx, &req->buf);
4522
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004523 /* If we are no other data available, yield waiting for new data. */
4524 if (len) {
4525 if (len > 0) {
4526 lua_pushinteger(L, len);
4527 lua_replace(L, 2);
4528 }
4529 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004530 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004531 }
4532
4533 /* return the result. */
4534 luaL_pushresult(&appctx->b);
4535 return 1;
4536}
4537
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004538/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004539__LJMP static int hlua_applet_http_recv(lua_State *L)
4540{
4541 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4542 int len = -1;
4543
4544 /* Check arguments. */
4545 if (lua_gettop(L) > 2)
4546 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
4547 if (lua_gettop(L) >= 2) {
4548 len = MAY_LJMP(luaL_checkinteger(L, 2));
4549 lua_pop(L, 1);
4550 }
4551
Christopher Fauleta2097962019-07-15 16:25:33 +02004552 lua_pushinteger(L, len);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004553
Christopher Fauleta2097962019-07-15 16:25:33 +02004554 /* Initialise the string catenation. */
4555 luaL_buffinit(L, &appctx->b);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004556
Christopher Fauleta2097962019-07-15 16:25:33 +02004557 return MAY_LJMP(hlua_applet_http_recv_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004558}
4559
4560/* Append data in the output side of the buffer. This data is immediately
4561 * sent. The function returns the amount of data written. If the buffer
4562 * cannot contain the data, the function yields. The function returns -1
4563 * if the channel is closed.
4564 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004565__LJMP static int hlua_applet_http_send_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004566{
4567 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4568 struct stream_interface *si = appctx->appctx->owner;
4569 struct channel *res = si_ic(si);
4570 struct htx *htx = htx_from_buf(&res->buf);
4571 const char *data;
4572 size_t len;
4573 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4574 int max;
4575
Christopher Faulet9060fc02019-07-03 11:39:30 +02004576 max = htx_get_max_blksz(htx, channel_htx_recv_max(res, htx));
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004577 if (!max)
4578 goto snd_yield;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004579
4580 data = MAY_LJMP(luaL_checklstring(L, 2, &len));
4581
4582 /* Get the max amount of data which can write as input in the channel. */
4583 if (max > (len - l))
4584 max = len - l;
4585
4586 /* Copy data. */
Willy Tarreau0a7ef022019-05-28 10:30:11 +02004587 max = htx_add_data(htx, ist2(data + l, max));
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004588 channel_add_input(res, max);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004589
4590 /* update counters. */
4591 l += max;
4592 lua_pop(L, 1);
4593 lua_pushinteger(L, l);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004594
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004595 /* If some data is not send, declares the situation to the
4596 * applet, and returns a yield.
4597 */
4598 if (l < len) {
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004599 snd_yield:
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004600 htx_to_buf(htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004601 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004602 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004603 }
4604
Christopher Fauleta2097962019-07-15 16:25:33 +02004605 htx_to_buf(htx, &res->buf);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004606 return 1;
4607}
4608
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004609/* Just a wrapper of "hlua_applet_send_yield". This wrapper permits
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004610 * yield the LUA process, and resume it without checking the
4611 * input arguments.
4612 */
4613__LJMP static int hlua_applet_http_send(lua_State *L)
4614{
4615 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004616
4617 /* We want to send some data. Headers must be sent. */
4618 if (!(appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
4619 hlua_pusherror(L, "Lua: 'send' you must call start_response() before sending data.");
4620 WILL_LJMP(lua_error(L));
4621 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004622
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004623 /* This integer is used for followinf the amount of data sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004624 lua_pushinteger(L, 0);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004625
Christopher Fauleta2097962019-07-15 16:25:33 +02004626 return MAY_LJMP(hlua_applet_http_send_yield(L, 0, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004627}
4628
4629__LJMP static int hlua_applet_http_addheader(lua_State *L)
4630{
4631 const char *name;
4632 int ret;
4633
4634 MAY_LJMP(hlua_checkapplet_http(L, 1));
4635 name = MAY_LJMP(luaL_checkstring(L, 2));
4636 MAY_LJMP(luaL_checkstring(L, 3));
4637
4638 /* Push in the stack the "response" entry. */
4639 ret = lua_getfield(L, 1, "response");
4640 if (ret != LUA_TTABLE) {
4641 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response'] "
4642 "is expected as an array. %s found", lua_typename(L, ret));
4643 WILL_LJMP(lua_error(L));
4644 }
4645
4646 /* check if the header is already registered if it is not
4647 * the case, register it.
4648 */
4649 ret = lua_getfield(L, -1, name);
4650 if (ret == LUA_TNIL) {
4651
4652 /* Entry not found. */
4653 lua_pop(L, 1); /* remove the nil. The "response" table is the top of the stack. */
4654
4655 /* Insert the new header name in the array in the top of the stack.
4656 * It left the new array in the top of the stack.
4657 */
4658 lua_newtable(L);
4659 lua_pushvalue(L, 2);
4660 lua_pushvalue(L, -2);
4661 lua_settable(L, -4);
4662
4663 } else if (ret != LUA_TTABLE) {
4664
4665 /* corruption error. */
4666 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response']['%s'] "
4667 "is expected as an array. %s found", name, lua_typename(L, ret));
4668 WILL_LJMP(lua_error(L));
4669 }
4670
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07004671 /* Now the top of thestack is an array of values. We push
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004672 * the header value as new entry.
4673 */
4674 lua_pushvalue(L, 3);
4675 ret = lua_rawlen(L, -2);
4676 lua_rawseti(L, -2, ret + 1);
4677 lua_pushboolean(L, 1);
4678 return 1;
4679}
4680
4681__LJMP static int hlua_applet_http_status(lua_State *L)
4682{
4683 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4684 int status = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004685 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004686
4687 if (status < 100 || status > 599) {
4688 lua_pushboolean(L, 0);
4689 return 1;
4690 }
4691
4692 appctx->appctx->ctx.hlua_apphttp.status = status;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004693 appctx->appctx->ctx.hlua_apphttp.reason = reason;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004694 lua_pushboolean(L, 1);
4695 return 1;
4696}
4697
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004698
Christopher Fauleta2097962019-07-15 16:25:33 +02004699__LJMP static int hlua_applet_http_send_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004700{
4701 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4702 struct stream_interface *si = appctx->appctx->owner;
4703 struct channel *res = si_ic(si);
4704 struct htx *htx;
4705 struct htx_sl *sl;
4706 struct h1m h1m;
4707 const char *status, *reason;
4708 const char *name, *value;
4709 size_t nlen, vlen;
4710 unsigned int flags;
4711
4712 /* Send the message at once. */
4713 htx = htx_from_buf(&res->buf);
4714 h1m_init_res(&h1m);
4715
4716 /* Use the same http version than the request. */
4717 status = ultoa_r(appctx->appctx->ctx.hlua_apphttp.status, trash.area, trash.size);
4718 reason = appctx->appctx->ctx.hlua_apphttp.reason;
4719 if (reason == NULL)
4720 reason = http_get_reason(appctx->appctx->ctx.hlua_apphttp.status);
4721 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11) {
4722 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
4723 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"), ist(status), ist(reason));
4724 }
4725 else {
4726 flags = HTX_SL_F_IS_RESP;
4727 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"), ist(status), ist(reason));
4728 }
4729 if (!sl) {
4730 hlua_pusherror(L, "Lua applet http '%s': Failed to create response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004731 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004732 WILL_LJMP(lua_error(L));
4733 }
4734 sl->info.res.status = appctx->appctx->ctx.hlua_apphttp.status;
4735
4736 /* Get the array associated to the field "response" in the object AppletHTTP. */
4737 lua_pushvalue(L, 0);
4738 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
4739 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004740 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004741 WILL_LJMP(lua_error(L));
4742 }
4743
4744 /* Browse the list of headers. */
4745 lua_pushnil(L);
4746 while(lua_next(L, -2) != 0) {
4747 /* We expect a string as -2. */
4748 if (lua_type(L, -2) != LUA_TSTRING) {
4749 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004750 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004751 lua_typename(L, lua_type(L, -2)));
4752 WILL_LJMP(lua_error(L));
4753 }
4754 name = lua_tolstring(L, -2, &nlen);
4755
4756 /* We expect an array as -1. */
4757 if (lua_type(L, -1) != LUA_TTABLE) {
4758 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'] element must be an table. got %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004759 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004760 name,
4761 lua_typename(L, lua_type(L, -1)));
4762 WILL_LJMP(lua_error(L));
4763 }
4764
4765 /* Browse the table who is on the top of the stack. */
4766 lua_pushnil(L);
4767 while(lua_next(L, -2) != 0) {
4768 int id;
4769
4770 /* We expect a number as -2. */
4771 if (lua_type(L, -2) != LUA_TNUMBER) {
4772 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][] element must be a number. got %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004773 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004774 name,
4775 lua_typename(L, lua_type(L, -2)));
4776 WILL_LJMP(lua_error(L));
4777 }
4778 id = lua_tointeger(L, -2);
4779
4780 /* We expect a string as -2. */
4781 if (lua_type(L, -1) != LUA_TSTRING) {
4782 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][%d] element must be a string. got %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004783 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004784 name, id,
4785 lua_typename(L, lua_type(L, -1)));
4786 WILL_LJMP(lua_error(L));
4787 }
4788 value = lua_tolstring(L, -1, &vlen);
4789
4790 /* Simple Protocol checks. */
4791 if (isteqi(ist2(name, nlen), ist("transfer-encoding")))
Christopher Faulet700d9e82020-01-31 12:21:52 +01004792 h1_parse_xfer_enc_header(&h1m, ist2(value, vlen));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004793 else if (isteqi(ist2(name, nlen), ist("content-length"))) {
4794 struct ist v = ist2(value, vlen);
4795 int ret;
4796
4797 ret = h1_parse_cont_len_header(&h1m, &v);
4798 if (ret < 0) {
4799 hlua_pusherror(L, "Lua applet http '%s': Invalid '%s' header.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004800 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004801 name);
4802 WILL_LJMP(lua_error(L));
4803 }
4804 else if (ret == 0)
4805 goto next; /* Skip it */
4806 }
4807
4808 /* Add a new header */
4809 if (!htx_add_header(htx, ist2(name, nlen), ist2(value, vlen))) {
4810 hlua_pusherror(L, "Lua applet http '%s': Failed to add header '%s' in the response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004811 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004812 name);
4813 WILL_LJMP(lua_error(L));
4814 }
4815 next:
4816 /* Remove the array from the stack, and get next element with a remaining string. */
4817 lua_pop(L, 1);
4818 }
4819
4820 /* Remove the array from the stack, and get next element with a remaining string. */
4821 lua_pop(L, 1);
4822 }
4823
4824 if (h1m.flags & H1_MF_CHNK)
4825 h1m.flags &= ~H1_MF_CLEN;
4826 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
4827 h1m.flags |= H1_MF_XFER_LEN;
4828
4829 /* Uset HTX start-line flags */
4830 if (h1m.flags & H1_MF_XFER_ENC)
4831 flags |= HTX_SL_F_XFER_ENC;
4832 if (h1m.flags & H1_MF_XFER_LEN) {
4833 flags |= HTX_SL_F_XFER_LEN;
4834 if (h1m.flags & H1_MF_CHNK)
4835 flags |= HTX_SL_F_CHNK;
4836 else if (h1m.flags & H1_MF_CLEN)
4837 flags |= HTX_SL_F_CLEN;
4838 if (h1m.body_len == 0)
4839 flags |= HTX_SL_F_BODYLESS;
4840 }
4841 sl->flags |= flags;
4842
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07004843 /* If we don't have a content-length set, and the HTTP version is 1.1
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004844 * and the status code implies the presence of a message body, we must
4845 * announce a transfer encoding chunked. This is required by haproxy
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004846 * for the keepalive compliance. If the applet announces a transfer-encoding
4847 * chunked itself, don't do anything.
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004848 */
4849 if ((flags & (HTX_SL_F_VER_11|HTX_SL_F_XFER_LEN)) == HTX_SL_F_VER_11 &&
4850 appctx->appctx->ctx.hlua_apphttp.status >= 200 &&
4851 appctx->appctx->ctx.hlua_apphttp.status != 204 &&
4852 appctx->appctx->ctx.hlua_apphttp.status != 304) {
4853 /* Add a new header */
4854 sl->flags |= (HTX_SL_F_XFER_ENC|H1_MF_CHNK|H1_MF_XFER_LEN);
4855 if (!htx_add_header(htx, ist("transfer-encoding"), ist("chunked"))) {
4856 hlua_pusherror(L, "Lua applet http '%s': Failed to add header 'transfer-encoding' in the response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004857 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004858 WILL_LJMP(lua_error(L));
4859 }
4860 }
4861
4862 /* Finalize headers. */
4863 if (!htx_add_endof(htx, HTX_BLK_EOH)) {
4864 hlua_pusherror(L, "Lua applet http '%s': Failed create the response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004865 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004866 WILL_LJMP(lua_error(L));
4867 }
4868
4869 if (htx_used_space(htx) > b_size(&res->buf) - global.tune.maxrewrite) {
4870 b_reset(&res->buf);
4871 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4872 WILL_LJMP(lua_error(L));
4873 }
4874
4875 htx_to_buf(htx, &res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004876 channel_add_input(res, htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004877
4878 /* Headers sent, set the flag. */
4879 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4880 return 0;
4881
4882}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004883/* We will build the status line and the headers of the HTTP response.
4884 * We will try send at once if its not possible, we give back the hand
4885 * waiting for more room.
4886 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004887__LJMP static int hlua_applet_http_start_response_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004888{
4889 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4890 struct stream_interface *si = appctx->appctx->owner;
4891 struct channel *res = si_ic(si);
4892
4893 if (co_data(res)) {
4894 si_rx_room_blk(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004895 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_start_response_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004896 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004897 return MAY_LJMP(hlua_applet_http_send_response(L));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004898}
4899
4900
Christopher Fauleta2097962019-07-15 16:25:33 +02004901__LJMP static int hlua_applet_http_start_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004902{
Christopher Fauleta2097962019-07-15 16:25:33 +02004903 return MAY_LJMP(hlua_applet_http_start_response_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004904}
4905
Christopher Fauleta2097962019-07-15 16:25:33 +02004906/*
4907 *
4908 *
4909 * Class HTTP
4910 *
4911 *
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004912 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004913
4914/* Returns a struct hlua_txn if the stack entry "ud" is
4915 * a class stream, otherwise it throws an error.
4916 */
4917__LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004918{
Christopher Fauleta2097962019-07-15 16:25:33 +02004919 return MAY_LJMP(hlua_checkudata(L, ud, class_http_ref));
4920}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004921
Christopher Fauleta2097962019-07-15 16:25:33 +02004922/* This function creates and push in the stack a HTTP object
4923 * according with a current TXN.
4924 */
4925static int hlua_http_new(lua_State *L, struct hlua_txn *txn)
4926{
4927 struct hlua_txn *htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004928
Christopher Fauleta2097962019-07-15 16:25:33 +02004929 /* Check stack size. */
4930 if (!lua_checkstack(L, 3))
4931 return 0;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004932
Christopher Fauleta2097962019-07-15 16:25:33 +02004933 /* Create the object: obj[0] = userdata.
4934 * Note that the base of the Converters object is the
4935 * same than the TXN object.
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004936 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004937 lua_newtable(L);
4938 htxn = lua_newuserdata(L, sizeof(*htxn));
4939 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004940
4941 htxn->s = txn->s;
4942 htxn->p = txn->p;
Christopher Faulet256b69a2019-05-23 11:14:21 +02004943 htxn->dir = txn->dir;
4944 htxn->flags = txn->flags;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004945
4946 /* Pop a class stream metatable and affect it to the table. */
4947 lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref);
4948 lua_setmetatable(L, -2);
4949
4950 return 1;
4951}
4952
4953/* This function creates ans returns an array of HTTP headers.
4954 * This function does not fails. It is used as wrapper with the
4955 * 2 following functions.
4956 */
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004957__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004958{
Christopher Fauleta2097962019-07-15 16:25:33 +02004959 struct htx *htx;
4960 int32_t pos;
4961
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004962 /* Create the table. */
4963 lua_newtable(L);
4964
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004965
Christopher Fauleta2097962019-07-15 16:25:33 +02004966 htx = htxbuf(&msg->chn->buf);
4967 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4968 struct htx_blk *blk = htx_get_blk(htx, pos);
4969 enum htx_blk_type type = htx_get_blk_type(blk);
4970 struct ist n, v;
4971 int len;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004972
Christopher Fauleta2097962019-07-15 16:25:33 +02004973 if (type == HTX_BLK_HDR) {
4974 n = htx_get_blk_name(htx,blk);
4975 v = htx_get_blk_value(htx, blk);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004976 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004977 else if (type == HTX_BLK_EOH)
4978 break;
4979 else
4980 continue;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004981
Christopher Fauleta2097962019-07-15 16:25:33 +02004982 /* Check for existing entry:
4983 * assume that the table is on the top of the stack, and
4984 * push the key in the stack, the function lua_gettable()
4985 * perform the lookup.
4986 */
4987 lua_pushlstring(L, n.ptr, n.len);
4988 lua_gettable(L, -2);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004989
Christopher Fauleta2097962019-07-15 16:25:33 +02004990 switch (lua_type(L, -1)) {
4991 case LUA_TNIL:
4992 /* Table not found, create it. */
4993 lua_pop(L, 1); /* remove the nil value. */
4994 lua_pushlstring(L, n.ptr, n.len); /* push the header name as key. */
4995 lua_newtable(L); /* create and push empty table. */
4996 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
4997 lua_rawseti(L, -2, 0); /* index header value (pop it). */
4998 lua_rawset(L, -3); /* index new table with header name (pop the values). */
Christopher Faulet724a12c2018-12-13 22:12:15 +01004999 break;
Christopher Faulet724a12c2018-12-13 22:12:15 +01005000
Christopher Fauleta2097962019-07-15 16:25:33 +02005001 case LUA_TTABLE:
5002 /* Entry found: push the value in the table. */
5003 len = lua_rawlen(L, -1);
5004 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
5005 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
5006 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
5007 break;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005008
Christopher Fauleta2097962019-07-15 16:25:33 +02005009 default:
5010 /* Other cases are errors. */
5011 hlua_pusherror(L, "internal error during the parsing of headers.");
5012 WILL_LJMP(lua_error(L));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005013 }
5014 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005015 return 1;
5016}
5017
5018__LJMP static int hlua_http_req_get_headers(lua_State *L)
5019{
5020 struct hlua_txn *htxn;
5021
5022 MAY_LJMP(check_args(L, 1, "req_get_headers"));
5023 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5024
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005025 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005026 WILL_LJMP(lua_error(L));
5027
Christopher Faulet9d1332b2020-02-24 16:46:16 +01005028 return hlua_http_get_headers(L, &htxn->s->txn->req);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005029}
5030
5031__LJMP static int hlua_http_res_get_headers(lua_State *L)
5032{
5033 struct hlua_txn *htxn;
5034
5035 MAY_LJMP(check_args(L, 1, "res_get_headers"));
5036 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5037
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005038 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005039 WILL_LJMP(lua_error(L));
5040
Christopher Faulet9d1332b2020-02-24 16:46:16 +01005041 return hlua_http_get_headers(L, &htxn->s->txn->rsp);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005042}
5043
5044/* This function replace full header, or just a value in
5045 * the request or in the response. It is a wrapper fir the
5046 * 4 following functions.
5047 */
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005048__LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct http_msg *msg, int full)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005049{
5050 size_t name_len;
5051 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5052 const char *reg = MAY_LJMP(luaL_checkstring(L, 3));
5053 const char *value = MAY_LJMP(luaL_checkstring(L, 4));
Christopher Fauleta2097962019-07-15 16:25:33 +02005054 struct htx *htx;
Dragan Dosen26743032019-04-30 15:54:36 +02005055 struct my_regex *re;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005056
Dragan Dosen26743032019-04-30 15:54:36 +02005057 if (!(re = regex_comp(reg, 1, 1, NULL)))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005058 WILL_LJMP(luaL_argerror(L, 3, "invalid regex"));
5059
Christopher Fauleta2097962019-07-15 16:25:33 +02005060 htx = htxbuf(&msg->chn->buf);
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005061 http_replace_hdrs(chn_strm(msg->chn), htx, ist2(name, name_len), value, re, full);
Dragan Dosen26743032019-04-30 15:54:36 +02005062 regex_free(re);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005063 return 0;
5064}
5065
5066__LJMP static int hlua_http_req_rep_hdr(lua_State *L)
5067{
5068 struct hlua_txn *htxn;
5069
5070 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
5071 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5072
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005073 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005074 WILL_LJMP(lua_error(L));
5075
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005076 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005077}
5078
5079__LJMP static int hlua_http_res_rep_hdr(lua_State *L)
5080{
5081 struct hlua_txn *htxn;
5082
5083 MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
5084 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5085
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005086 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005087 WILL_LJMP(lua_error(L));
5088
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005089 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005090}
5091
5092__LJMP static int hlua_http_req_rep_val(lua_State *L)
5093{
5094 struct hlua_txn *htxn;
5095
5096 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
5097 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5098
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005099 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005100 WILL_LJMP(lua_error(L));
5101
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005102 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005103}
5104
5105__LJMP static int hlua_http_res_rep_val(lua_State *L)
5106{
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005107 struct hlua_txn *htxn;
5108
5109 MAY_LJMP(check_args(L, 4, "res_rep_val"));
5110 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5111
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005112 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005113 WILL_LJMP(lua_error(L));
5114
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005115 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005116}
5117
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005118/* This function deletes all the occurrences of an header.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005119 * It is a wrapper for the 2 following functions.
5120 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005121__LJMP static inline int hlua_http_del_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005122{
5123 size_t len;
5124 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005125 struct htx *htx = htxbuf(&msg->chn->buf);
5126 struct http_hdr_ctx ctx;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005127
Christopher Fauleta2097962019-07-15 16:25:33 +02005128 ctx.blk = NULL;
5129 while (http_find_header(htx, ist2(name, len), &ctx, 1))
5130 http_remove_header(htx, &ctx);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005131 return 0;
5132}
5133
5134__LJMP static int hlua_http_req_del_hdr(lua_State *L)
5135{
5136 struct hlua_txn *htxn;
5137
5138 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
5139 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5140
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005141 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005142 WILL_LJMP(lua_error(L));
5143
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005144 return hlua_http_del_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005145}
5146
5147__LJMP static int hlua_http_res_del_hdr(lua_State *L)
5148{
5149 struct hlua_txn *htxn;
5150
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005151 MAY_LJMP(check_args(L, 2, "res_del_hdr"));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005152 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5153
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005154 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005155 WILL_LJMP(lua_error(L));
5156
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005157 return hlua_http_del_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005158}
5159
5160/* This function adds an header. It is a wrapper used by
5161 * the 2 following functions.
5162 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005163__LJMP static inline int hlua_http_add_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005164{
5165 size_t name_len;
5166 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5167 size_t value_len;
5168 const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005169 struct htx *htx = htxbuf(&msg->chn->buf);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005170
Christopher Fauleta2097962019-07-15 16:25:33 +02005171 lua_pushboolean(L, http_add_header(htx, ist2(name, name_len),
5172 ist2(value, value_len)));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005173 return 0;
5174}
5175
5176__LJMP static int hlua_http_req_add_hdr(lua_State *L)
5177{
5178 struct hlua_txn *htxn;
5179
5180 MAY_LJMP(check_args(L, 3, "req_add_hdr"));
5181 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5182
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005183 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005184 WILL_LJMP(lua_error(L));
5185
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005186 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005187}
5188
5189__LJMP static int hlua_http_res_add_hdr(lua_State *L)
5190{
5191 struct hlua_txn *htxn;
5192
5193 MAY_LJMP(check_args(L, 3, "res_add_hdr"));
5194 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5195
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005196 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005197 WILL_LJMP(lua_error(L));
5198
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005199 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005200}
5201
5202static int hlua_http_req_set_hdr(lua_State *L)
5203{
5204 struct hlua_txn *htxn;
5205
5206 MAY_LJMP(check_args(L, 3, "req_set_hdr"));
5207 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5208
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005209 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005210 WILL_LJMP(lua_error(L));
5211
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005212 hlua_http_del_hdr(L, &htxn->s->txn->req);
5213 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005214}
5215
5216static int hlua_http_res_set_hdr(lua_State *L)
5217{
5218 struct hlua_txn *htxn;
5219
5220 MAY_LJMP(check_args(L, 3, "res_set_hdr"));
5221 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5222
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005223 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005224 WILL_LJMP(lua_error(L));
5225
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005226 hlua_http_del_hdr(L, &htxn->s->txn->rsp);
5227 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005228}
5229
5230/* This function set the method. */
5231static int hlua_http_req_set_meth(lua_State *L)
5232{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005233 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005234 size_t name_len;
5235 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005236
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005237 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005238 WILL_LJMP(lua_error(L));
5239
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005240 lua_pushboolean(L, http_req_replace_stline(0, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005241 return 1;
5242}
5243
5244/* This function set the method. */
5245static int hlua_http_req_set_path(lua_State *L)
5246{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005247 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005248 size_t name_len;
5249 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02005250
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005251 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005252 WILL_LJMP(lua_error(L));
5253
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005254 lua_pushboolean(L, http_req_replace_stline(1, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005255 return 1;
5256}
5257
5258/* This function set the query-string. */
5259static int hlua_http_req_set_query(lua_State *L)
5260{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005261 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005262 size_t name_len;
5263 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005264
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005265 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005266 WILL_LJMP(lua_error(L));
5267
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005268 /* Check length. */
5269 if (name_len > trash.size - 1) {
5270 lua_pushboolean(L, 0);
5271 return 1;
5272 }
5273
5274 /* Add the mark question as prefix. */
5275 chunk_reset(&trash);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005276 trash.area[trash.data++] = '?';
5277 memcpy(trash.area + trash.data, name, name_len);
5278 trash.data += name_len;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005279
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005280 lua_pushboolean(L,
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005281 http_req_replace_stline(2, trash.area, trash.data, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005282 return 1;
5283}
5284
5285/* This function set the uri. */
5286static int hlua_http_req_set_uri(lua_State *L)
5287{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005288 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005289 size_t name_len;
5290 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005291
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005292 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005293 WILL_LJMP(lua_error(L));
5294
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005295 lua_pushboolean(L, http_req_replace_stline(3, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005296 return 1;
5297}
5298
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005299/* This function set the response code & optionally reason. */
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005300static int hlua_http_res_set_status(lua_State *L)
5301{
5302 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5303 unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
Christopher Faulet96bff762019-12-17 13:46:18 +01005304 const char *str = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
5305 const struct ist reason = ist2(str, (str ? strlen(str) : 0));
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005306
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005307 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005308 WILL_LJMP(lua_error(L));
5309
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005310 http_res_set_status(code, reason, htxn->s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005311 return 0;
5312}
5313
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005314/*
5315 *
5316 *
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005317 * Class TXN
5318 *
5319 *
5320 */
5321
5322/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02005323 * a class stream, otherwise it throws an error.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005324 */
5325__LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud)
5326{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005327 return MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005328}
5329
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005330__LJMP static int hlua_set_var(lua_State *L)
5331{
5332 struct hlua_txn *htxn;
5333 const char *name;
5334 size_t len;
5335 struct sample smp;
5336
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005337 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
5338 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005339
5340 /* It is useles to retrieve the stream, but this function
5341 * runs only in a stream context.
5342 */
5343 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5344 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5345
5346 /* Converts the third argument in a sample. */
Amaury Denoyellebc0af6a2020-10-29 17:21:20 +01005347 memset(&smp, 0, sizeof(smp));
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005348 hlua_lua2smp(L, 3, &smp);
5349
5350 /* Store the sample in a variable. */
Willy Tarreau7560dd42016-03-10 16:28:58 +01005351 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005352
5353 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
5354 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
5355 else
5356 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
5357
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005358 return 1;
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005359}
5360
Christopher Faulet85d79c92016-11-09 16:54:56 +01005361__LJMP static int hlua_unset_var(lua_State *L)
5362{
5363 struct hlua_txn *htxn;
5364 const char *name;
5365 size_t len;
5366 struct sample smp;
5367
5368 MAY_LJMP(check_args(L, 2, "unset_var"));
5369
5370 /* It is useles to retrieve the stream, but this function
5371 * runs only in a stream context.
5372 */
5373 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5374 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5375
5376 /* Unset the variable. */
5377 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005378 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
5379 return 1;
Christopher Faulet85d79c92016-11-09 16:54:56 +01005380}
5381
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005382__LJMP static int hlua_get_var(lua_State *L)
5383{
5384 struct hlua_txn *htxn;
5385 const char *name;
5386 size_t len;
5387 struct sample smp;
5388
5389 MAY_LJMP(check_args(L, 2, "get_var"));
5390
5391 /* It is useles to retrieve the stream, but this function
5392 * runs only in a stream context.
5393 */
5394 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5395 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5396
Willy Tarreau7560dd42016-03-10 16:28:58 +01005397 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01005398 if (!vars_get_by_name(name, len, &smp)) {
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005399 lua_pushnil(L);
5400 return 1;
5401 }
5402
5403 return hlua_smp2lua(L, &smp);
5404}
5405
Willy Tarreau59551662015-03-10 14:23:13 +01005406__LJMP static int hlua_set_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005407{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005408 struct hlua *hlua;
5409
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005410 MAY_LJMP(check_args(L, 2, "set_priv"));
5411
Willy Tarreau87b09662015-04-03 00:22:06 +02005412 /* It is useles to retrieve the stream, but this function
5413 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005414 */
5415 MAY_LJMP(hlua_checktxn(L, 1));
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005416
5417 /* Get hlua struct, or NULL if we execute from main lua state */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005418 hlua = hlua_gethlua(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005419 if (!hlua)
5420 return 0;
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005421
5422 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02005423 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005424
5425 /* Get and store new value. */
5426 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
5427 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
5428
5429 return 0;
5430}
5431
Willy Tarreau59551662015-03-10 14:23:13 +01005432__LJMP static int hlua_get_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005433{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005434 struct hlua *hlua;
5435
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005436 MAY_LJMP(check_args(L, 1, "get_priv"));
5437
Willy Tarreau87b09662015-04-03 00:22:06 +02005438 /* It is useles to retrieve the stream, but this function
5439 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005440 */
5441 MAY_LJMP(hlua_checktxn(L, 1));
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005442
5443 /* Get hlua struct, or NULL if we execute from main lua state */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005444 hlua = hlua_gethlua(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005445 if (!hlua) {
5446 lua_pushnil(L);
5447 return 1;
5448 }
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005449
5450 /* Push configuration index in the stack. */
5451 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
5452
5453 return 1;
5454}
5455
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005456/* Create stack entry containing a class TXN. This function
5457 * return 0 if the stack does not contains free slots,
5458 * otherwise it returns 1.
5459 */
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005460static int hlua_txn_new(lua_State *L, struct stream *s, struct proxy *p, int dir, int flags)
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005461{
Willy Tarreaude491382015-04-06 11:04:28 +02005462 struct hlua_txn *htxn;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005463
5464 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005465 if (!lua_checkstack(L, 3))
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005466 return 0;
5467
5468 /* NOTE: The allocation never fails. The failure
5469 * throw an error, and the function never returns.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005470 * if the throw is not available, the process is aborted.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005471 */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005472 /* Create the object: obj[0] = userdata. */
5473 lua_newtable(L);
Willy Tarreaude491382015-04-06 11:04:28 +02005474 htxn = lua_newuserdata(L, sizeof(*htxn));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005475 lua_rawseti(L, -2, 0);
5476
Willy Tarreaude491382015-04-06 11:04:28 +02005477 htxn->s = s;
5478 htxn->p = p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01005479 htxn->dir = dir;
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005480 htxn->flags = flags;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005481
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005482 /* Create the "f" field that contains a list of fetches. */
5483 lua_pushstring(L, "f");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005484 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005485 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005486 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005487
5488 /* Create the "sf" field that contains a list of stringsafe fetches. */
5489 lua_pushstring(L, "sf");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005490 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP | HLUA_F_AS_STRING))
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005491 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005492 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005493
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005494 /* Create the "c" field that contains a list of converters. */
5495 lua_pushstring(L, "c");
Willy Tarreaude491382015-04-06 11:04:28 +02005496 if (!hlua_converters_new(L, htxn, 0))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005497 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005498 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005499
5500 /* Create the "sc" field that contains a list of stringsafe converters. */
5501 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01005502 if (!hlua_converters_new(L, htxn, HLUA_F_AS_STRING))
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005503 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005504 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005505
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005506 /* Create the "req" field that contains the request channel object. */
5507 lua_pushstring(L, "req");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005508 if (!hlua_channel_new(L, &s->req))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005509 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005510 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005511
5512 /* Create the "res" field that contains the response channel object. */
5513 lua_pushstring(L, "res");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005514 if (!hlua_channel_new(L, &s->res))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005515 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005516 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005517
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005518 /* Creates the HTTP object is the current proxy allows http. */
5519 lua_pushstring(L, "http");
Christopher Faulet1bb6afa2021-03-08 17:57:53 +01005520 if (IS_HTX_STRM(s)) {
Willy Tarreaude491382015-04-06 11:04:28 +02005521 if (!hlua_http_new(L, htxn))
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005522 return 0;
5523 }
5524 else
5525 lua_pushnil(L);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005526 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005527
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005528 /* Pop a class sesison metatable and affect it to the userdata. */
5529 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref);
5530 lua_setmetatable(L, -2);
5531
5532 return 1;
5533}
5534
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005535__LJMP static int hlua_txn_deflog(lua_State *L)
5536{
5537 const char *msg;
5538 struct hlua_txn *htxn;
5539
5540 MAY_LJMP(check_args(L, 2, "deflog"));
5541 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5542 msg = MAY_LJMP(luaL_checkstring(L, 2));
5543
5544 hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg);
5545 return 0;
5546}
5547
5548__LJMP static int hlua_txn_log(lua_State *L)
5549{
5550 int level;
5551 const char *msg;
5552 struct hlua_txn *htxn;
5553
5554 MAY_LJMP(check_args(L, 3, "log"));
5555 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5556 level = MAY_LJMP(luaL_checkinteger(L, 2));
5557 msg = MAY_LJMP(luaL_checkstring(L, 3));
5558
5559 if (level < 0 || level >= NB_LOG_LEVELS)
5560 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
5561
5562 hlua_sendlog(htxn->s->be, level, msg);
5563 return 0;
5564}
5565
5566__LJMP static int hlua_txn_log_debug(lua_State *L)
5567{
5568 const char *msg;
5569 struct hlua_txn *htxn;
5570
5571 MAY_LJMP(check_args(L, 2, "Debug"));
5572 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5573 msg = MAY_LJMP(luaL_checkstring(L, 2));
5574 hlua_sendlog(htxn->s->be, LOG_DEBUG, msg);
5575 return 0;
5576}
5577
5578__LJMP static int hlua_txn_log_info(lua_State *L)
5579{
5580 const char *msg;
5581 struct hlua_txn *htxn;
5582
5583 MAY_LJMP(check_args(L, 2, "Info"));
5584 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5585 msg = MAY_LJMP(luaL_checkstring(L, 2));
5586 hlua_sendlog(htxn->s->be, LOG_INFO, msg);
5587 return 0;
5588}
5589
5590__LJMP static int hlua_txn_log_warning(lua_State *L)
5591{
5592 const char *msg;
5593 struct hlua_txn *htxn;
5594
5595 MAY_LJMP(check_args(L, 2, "Warning"));
5596 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5597 msg = MAY_LJMP(luaL_checkstring(L, 2));
5598 hlua_sendlog(htxn->s->be, LOG_WARNING, msg);
5599 return 0;
5600}
5601
5602__LJMP static int hlua_txn_log_alert(lua_State *L)
5603{
5604 const char *msg;
5605 struct hlua_txn *htxn;
5606
5607 MAY_LJMP(check_args(L, 2, "Alert"));
5608 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5609 msg = MAY_LJMP(luaL_checkstring(L, 2));
5610 hlua_sendlog(htxn->s->be, LOG_ALERT, msg);
5611 return 0;
5612}
5613
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005614__LJMP static int hlua_txn_set_loglevel(lua_State *L)
5615{
5616 struct hlua_txn *htxn;
5617 int ll;
5618
5619 MAY_LJMP(check_args(L, 2, "set_loglevel"));
5620 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5621 ll = MAY_LJMP(luaL_checkinteger(L, 2));
5622
5623 if (ll < 0 || ll > 7)
5624 WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
5625
5626 htxn->s->logs.level = ll;
5627 return 0;
5628}
5629
5630__LJMP static int hlua_txn_set_tos(lua_State *L)
5631{
5632 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005633 int tos;
5634
5635 MAY_LJMP(check_args(L, 2, "set_tos"));
5636 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5637 tos = MAY_LJMP(luaL_checkinteger(L, 2));
5638
Willy Tarreau1a18b542018-12-11 16:37:42 +01005639 conn_set_tos(objt_conn(htxn->s->sess->origin), tos);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005640 return 0;
5641}
5642
5643__LJMP static int hlua_txn_set_mark(lua_State *L)
5644{
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005645 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005646 int mark;
5647
5648 MAY_LJMP(check_args(L, 2, "set_mark"));
5649 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5650 mark = MAY_LJMP(luaL_checkinteger(L, 2));
5651
Lukas Tribus579e3e32019-08-11 18:03:45 +02005652 conn_set_mark(objt_conn(htxn->s->sess->origin), mark);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005653 return 0;
5654}
5655
Patrick Hemmer268a7072018-05-11 12:52:31 -04005656__LJMP static int hlua_txn_set_priority_class(lua_State *L)
5657{
5658 struct hlua_txn *htxn;
5659
5660 MAY_LJMP(check_args(L, 2, "set_priority_class"));
5661 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5662 htxn->s->priority_class = queue_limit_class(MAY_LJMP(luaL_checkinteger(L, 2)));
5663 return 0;
5664}
5665
5666__LJMP static int hlua_txn_set_priority_offset(lua_State *L)
5667{
5668 struct hlua_txn *htxn;
5669
5670 MAY_LJMP(check_args(L, 2, "set_priority_offset"));
5671 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5672 htxn->s->priority_offset = queue_limit_offset(MAY_LJMP(luaL_checkinteger(L, 2)));
5673 return 0;
5674}
5675
Christopher Faulet700d9e82020-01-31 12:21:52 +01005676/* Forward the Reply object to the client. This function converts the reply in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05005677 * HTX an push it to into the response channel. It is response to forward the
Christopher Faulet700d9e82020-01-31 12:21:52 +01005678 * message and terminate the transaction. It returns 1 on success and 0 on
5679 * error. The Reply must be on top of the stack.
5680 */
5681__LJMP static int hlua_txn_forward_reply(lua_State *L, struct stream *s)
5682{
5683 struct htx *htx;
5684 struct htx_sl *sl;
5685 struct h1m h1m;
5686 const char *status, *reason, *body;
5687 size_t status_len, reason_len, body_len;
5688 int ret, code, flags;
5689
5690 code = 200;
5691 status = "200";
5692 status_len = 3;
5693 ret = lua_getfield(L, -1, "status");
5694 if (ret == LUA_TNUMBER) {
5695 code = lua_tointeger(L, -1);
5696 status = lua_tolstring(L, -1, &status_len);
5697 }
5698 lua_pop(L, 1);
5699
5700 reason = http_get_reason(code);
5701 reason_len = strlen(reason);
5702 ret = lua_getfield(L, -1, "reason");
5703 if (ret == LUA_TSTRING)
5704 reason = lua_tolstring(L, -1, &reason_len);
5705 lua_pop(L, 1);
5706
5707 body = NULL;
5708 body_len = 0;
5709 ret = lua_getfield(L, -1, "body");
5710 if (ret == LUA_TSTRING)
5711 body = lua_tolstring(L, -1, &body_len);
5712 lua_pop(L, 1);
5713
5714 /* Prepare the response before inserting the headers */
5715 h1m_init_res(&h1m);
5716 htx = htx_from_buf(&s->res.buf);
5717 channel_htx_truncate(&s->res, htx);
5718 if (s->txn->req.flags & HTTP_MSGF_VER_11) {
5719 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
5720 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"),
5721 ist2(status, status_len), ist2(reason, reason_len));
5722 }
5723 else {
5724 flags = HTX_SL_F_IS_RESP;
5725 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"),
5726 ist2(status, status_len), ist2(reason, reason_len));
5727 }
5728 if (!sl)
5729 goto fail;
5730 sl->info.res.status = code;
5731
5732 /* Push in the stack the "headers" entry. */
5733 ret = lua_getfield(L, -1, "headers");
5734 if (ret != LUA_TTABLE)
5735 goto skip_headers;
5736
5737 lua_pushnil(L);
5738 while (lua_next(L, -2) != 0) {
5739 struct ist name, value;
5740 const char *n, *v;
5741 size_t nlen, vlen;
5742
5743 if (!lua_isstring(L, -2) || !lua_istable(L, -1)) {
5744 /* Skip element if the key is not a string or if the value is not a table */
5745 goto next_hdr;
5746 }
5747
5748 n = lua_tolstring(L, -2, &nlen);
5749 name = ist2(n, nlen);
5750 if (isteqi(name, ist("content-length"))) {
5751 /* Always skip content-length header. It will be added
5752 * later with the correct len
5753 */
5754 goto next_hdr;
5755 }
5756
5757 /* Loop on header's values */
5758 lua_pushnil(L);
5759 while (lua_next(L, -2)) {
5760 if (!lua_isstring(L, -1)) {
5761 /* Skip the value if it is not a string */
5762 goto next_value;
5763 }
5764
5765 v = lua_tolstring(L, -1, &vlen);
5766 value = ist2(v, vlen);
5767
5768 if (isteqi(name, ist("transfer-encoding")))
5769 h1_parse_xfer_enc_header(&h1m, value);
5770 if (!htx_add_header(htx, ist2(n, nlen), ist2(v, vlen)))
5771 goto fail;
5772
5773 next_value:
5774 lua_pop(L, 1);
5775 }
5776
5777 next_hdr:
5778 lua_pop(L, 1);
5779 }
5780 skip_headers:
5781 lua_pop(L, 1);
5782
5783 /* Update h1m flags: CLEN is set if CHNK is not present */
5784 if (!(h1m.flags & H1_MF_CHNK)) {
5785 const char *clen = ultoa(body_len);
5786
5787 h1m.flags |= H1_MF_CLEN;
5788 if (!htx_add_header(htx, ist("content-length"), ist(clen)))
5789 goto fail;
5790 }
5791 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
5792 h1m.flags |= H1_MF_XFER_LEN;
5793
5794 /* Update HTX start-line flags */
5795 if (h1m.flags & H1_MF_XFER_ENC)
5796 flags |= HTX_SL_F_XFER_ENC;
5797 if (h1m.flags & H1_MF_XFER_LEN) {
5798 flags |= HTX_SL_F_XFER_LEN;
5799 if (h1m.flags & H1_MF_CHNK)
5800 flags |= HTX_SL_F_CHNK;
5801 else if (h1m.flags & H1_MF_CLEN)
5802 flags |= HTX_SL_F_CLEN;
5803 if (h1m.body_len == 0)
5804 flags |= HTX_SL_F_BODYLESS;
5805 }
5806 sl->flags |= flags;
5807
5808
5809 if (!htx_add_endof(htx, HTX_BLK_EOH) ||
Christopher Fauletd1ac2b92020-12-02 19:12:22 +01005810 (body_len && !htx_add_data_atonce(htx, ist2(body, body_len))))
Christopher Faulet700d9e82020-01-31 12:21:52 +01005811 goto fail;
5812
Christopher Fauletd1ac2b92020-12-02 19:12:22 +01005813 htx->flags |= HTX_FL_EOM;
5814
Christopher Faulet700d9e82020-01-31 12:21:52 +01005815 /* Now, forward the response and terminate the transaction */
5816 s->txn->status = code;
5817 htx_to_buf(htx, &s->res.buf);
5818 if (!http_forward_proxy_resp(s, 1))
5819 goto fail;
5820
5821 return 1;
5822
5823 fail:
5824 channel_htx_truncate(&s->res, htx);
5825 return 0;
5826}
5827
5828/* Terminate a transaction if called from a lua action. For TCP streams,
5829 * processing is just aborted. Nothing is returned to the client and all
5830 * arguments are ignored. For HTTP streams, if a reply is passed as argument, it
5831 * is forwarded to the client before terminating the transaction. On success,
5832 * the function exits with ACT_RET_DONE code. If an error occurred, it exits
5833 * with ACT_RET_ERR code. If this function is not called from a lua action, it
5834 * just exits without any processing.
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005835 */
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005836__LJMP static int hlua_txn_done(lua_State *L)
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005837{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005838 struct hlua_txn *htxn;
Christopher Faulet700d9e82020-01-31 12:21:52 +01005839 struct stream *s;
5840 int finst;
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005841
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005842 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005843
Christopher Faulet700d9e82020-01-31 12:21:52 +01005844 /* If the flags NOTERM is set, we cannot terminate the session, so we
5845 * just end the execution of the current lua code. */
5846 if (htxn->flags & HLUA_TXN_NOTERM)
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005847 WILL_LJMP(hlua_done(L));
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005848
Christopher Faulet700d9e82020-01-31 12:21:52 +01005849 s = htxn->s;
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005850 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005851 struct channel *req = &s->req;
5852 struct channel *res = &s->res;
Willy Tarreau81389672015-03-10 12:03:52 +01005853
Christopher Faulet700d9e82020-01-31 12:21:52 +01005854 channel_auto_read(req);
5855 channel_abort(req);
5856 channel_auto_close(req);
5857 channel_erase(req);
5858
5859 res->wex = tick_add_ifset(now_ms, res->wto);
5860 channel_auto_read(res);
5861 channel_auto_close(res);
5862 channel_shutr_now(res);
5863
5864 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_D);
5865 goto done;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005866 }
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02005867
Christopher Faulet700d9e82020-01-31 12:21:52 +01005868 if (lua_gettop(L) == 1 || !lua_istable(L, 2)) {
5869 /* No reply or invalid reply */
5870 s->txn->status = 0;
5871 http_reply_and_close(s, 0, NULL);
5872 }
5873 else {
5874 /* Remove extra args to have the reply on top of the stack */
5875 if (lua_gettop(L) > 2)
5876 lua_pop(L, lua_gettop(L) - 2);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005877
Christopher Faulet700d9e82020-01-31 12:21:52 +01005878 if (!hlua_txn_forward_reply(L, s)) {
5879 if (!(s->flags & SF_ERR_MASK))
5880 s->flags |= SF_ERR_PRXCOND;
5881 lua_pushinteger(L, ACT_RET_ERR);
5882 WILL_LJMP(hlua_done(L));
5883 return 0; /* Never reached */
5884 }
Christopher Faulet4d0e2632019-07-16 10:52:40 +02005885 }
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005886
Christopher Faulet700d9e82020-01-31 12:21:52 +01005887 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_H);
5888 if (htxn->dir == SMP_OPT_DIR_REQ) {
5889 /* let's log the request time */
5890 s->logs.tv_request = now;
5891 if (s->sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Willy Tarreau4781b152021-04-06 13:53:36 +02005892 _HA_ATOMIC_INC(&s->sess->fe->fe_counters.intercepted_req);
Christopher Faulet700d9e82020-01-31 12:21:52 +01005893 }
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005894
Christopher Faulet700d9e82020-01-31 12:21:52 +01005895 done:
5896 if (!(s->flags & SF_ERR_MASK))
5897 s->flags |= SF_ERR_LOCAL;
5898 if (!(s->flags & SF_FINST_MASK))
5899 s->flags |= finst;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005900
Christopher Faulet4ad73102020-03-05 11:07:31 +01005901 lua_pushinteger(L, ACT_RET_ABRT);
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005902 WILL_LJMP(hlua_done(L));
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005903 return 0;
5904}
5905
Christopher Faulet700d9e82020-01-31 12:21:52 +01005906/*
5907 *
5908 *
5909 * Class REPLY
5910 *
5911 *
5912 */
5913
5914/* Pushes the TXN reply onto the top of the stack. If the stask does not have a
5915 * free slots, the function fails and returns 0;
5916 */
5917static int hlua_txn_reply_new(lua_State *L)
5918{
5919 struct hlua_txn *htxn;
5920 const char *reason, *body = NULL;
5921 int ret, status;
5922
5923 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005924 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005925 hlua_pusherror(L, "txn object is not an HTTP transaction.");
5926 WILL_LJMP(lua_error(L));
5927 }
5928
5929 /* Default value */
5930 status = 200;
5931 reason = http_get_reason(status);
5932
5933 if (lua_istable(L, 2)) {
5934 /* load status and reason from the table argument at index 2 */
5935 ret = lua_getfield(L, 2, "status");
5936 if (ret == LUA_TNIL)
5937 goto reason;
5938 else if (ret != LUA_TNUMBER) {
5939 /* invalid status: ignore the reason */
5940 goto body;
5941 }
5942 status = lua_tointeger(L, -1);
5943
5944 reason:
5945 lua_pop(L, 1); /* restore the stack: remove status */
5946 ret = lua_getfield(L, 2, "reason");
5947 if (ret == LUA_TSTRING)
5948 reason = lua_tostring(L, -1);
5949
5950 body:
5951 lua_pop(L, 1); /* restore the stack: remove invalid status or reason */
5952 ret = lua_getfield(L, 2, "body");
5953 if (ret == LUA_TSTRING)
5954 body = lua_tostring(L, -1);
5955 lua_pop(L, 1); /* restore the stack: remove body */
5956 }
5957
5958 /* Create the Reply table */
5959 lua_newtable(L);
5960
5961 /* Add status element */
5962 lua_pushstring(L, "status");
5963 lua_pushinteger(L, status);
5964 lua_settable(L, -3);
5965
5966 /* Add reason element */
5967 reason = http_get_reason(status);
5968 lua_pushstring(L, "reason");
5969 lua_pushstring(L, reason);
5970 lua_settable(L, -3);
5971
5972 /* Add body element, nil if undefined */
5973 lua_pushstring(L, "body");
5974 if (body)
5975 lua_pushstring(L, body);
5976 else
5977 lua_pushnil(L);
5978 lua_settable(L, -3);
5979
5980 /* Add headers element */
5981 lua_pushstring(L, "headers");
5982 lua_newtable(L);
5983
5984 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
5985 if (lua_istable(L, 2)) {
5986 /* load headers from the table argument at index 2. If it is a table, copy it. */
5987 ret = lua_getfield(L, 2, "headers");
5988 if (ret == LUA_TTABLE) {
5989 /* stack: [ ... <headers:table>, <table> ] */
5990 lua_pushnil(L);
5991 while (lua_next(L, -2) != 0) {
5992 /* stack: [ ... <headers:table>, <table>, k, v] */
5993 if (!lua_isstring(L, -1) && !lua_istable(L, -1)) {
5994 /* invalid value type, skip it */
5995 lua_pop(L, 1);
5996 continue;
5997 }
5998
5999
6000 /* Duplicate the key and swap it with the value. */
6001 lua_pushvalue(L, -2);
6002 lua_insert(L, -2);
6003 /* stack: [ ... <headers:table>, <table>, k, k, v ] */
6004
6005 lua_newtable(L);
6006 lua_insert(L, -2);
6007 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, v ] */
6008
6009 if (lua_isstring(L, -1)) {
6010 /* push the value in the inner table */
6011 lua_rawseti(L, -2, 1);
6012 }
6013 else { /* table */
6014 lua_pushnil(L);
6015 while (lua_next(L, -2) != 0) {
6016 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2, v2 ] */
6017 if (!lua_isstring(L, -1)) {
6018 /* invalid value type, skip it*/
6019 lua_pop(L, 1);
6020 continue;
6021 }
6022 /* push the value in the inner table */
6023 lua_rawseti(L, -4, lua_rawlen(L, -4) + 1);
6024 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2 ] */
6025 }
6026 lua_pop(L, 1);
6027 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table> ] */
6028 }
6029
6030 /* push (k,v) on the stack in the headers table:
6031 * stack: [ ... <headers:table>, <table>, k, k, v ]
6032 */
6033 lua_settable(L, -5);
6034 /* stack: [ ... <headers:table>, <table>, k ] */
6035 }
6036 }
6037 lua_pop(L, 1);
6038 }
6039 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
6040 lua_settable(L, -3);
6041 /* stack: [ txn, <Arg:table>, <Reply:table> ] */
6042
6043 /* Pop a class sesison metatable and affect it to the userdata. */
6044 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_reply_ref);
6045 lua_setmetatable(L, -2);
6046 return 1;
6047}
6048
6049/* Set the reply status code, and optionally the reason. If no reason is
6050 * provided, the default one corresponding to the status code is used.
6051 */
6052__LJMP static int hlua_txn_reply_set_status(lua_State *L)
6053{
6054 int status = MAY_LJMP(luaL_checkinteger(L, 2));
6055 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
6056
6057 /* First argument (self) must be a table */
6058 luaL_checktype(L, 1, LUA_TTABLE);
6059
6060 if (status < 100 || status > 599) {
6061 lua_pushboolean(L, 0);
6062 return 1;
6063 }
6064 if (!reason)
6065 reason = http_get_reason(status);
6066
6067 lua_pushinteger(L, status);
6068 lua_setfield(L, 1, "status");
6069
6070 lua_pushstring(L, reason);
6071 lua_setfield(L, 1, "reason");
6072
6073 lua_pushboolean(L, 1);
6074 return 1;
6075}
6076
6077/* Add a header into the reply object. Each header name is associated to an
6078 * array of values in the "headers" table. If the header name is not found, a
6079 * new entry is created.
6080 */
6081__LJMP static int hlua_txn_reply_add_header(lua_State *L)
6082{
6083 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
6084 const char *value = MAY_LJMP(luaL_checkstring(L, 3));
6085 int ret;
6086
6087 /* First argument (self) must be a table */
6088 luaL_checktype(L, 1, LUA_TTABLE);
6089
6090 /* Push in the stack the "headers" entry. */
6091 ret = lua_getfield(L, 1, "headers");
6092 if (ret != LUA_TTABLE) {
6093 hlua_pusherror(L, "Reply['headers'] is expected to a an array. %s found", lua_typename(L, ret));
6094 WILL_LJMP(lua_error(L));
6095 }
6096
6097 /* check if the header is already registered. If not, register it. */
6098 ret = lua_getfield(L, -1, name);
6099 if (ret == LUA_TNIL) {
6100 /* Entry not found. */
6101 lua_pop(L, 1); /* remove the nil. The "headers" table is the top of the stack. */
6102
6103 /* Insert the new header name in the array in the top of the stack.
6104 * It left the new array in the top of the stack.
6105 */
6106 lua_newtable(L);
6107 lua_pushstring(L, name);
6108 lua_pushvalue(L, -2);
6109 lua_settable(L, -4);
6110 }
6111 else if (ret != LUA_TTABLE) {
6112 hlua_pusherror(L, "Reply['headers']['%s'] is expected to be an array. %s found", name, lua_typename(L, ret));
6113 WILL_LJMP(lua_error(L));
6114 }
6115
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07006116 /* Now the top of thestack is an array of values. We push
Christopher Faulet700d9e82020-01-31 12:21:52 +01006117 * the header value as new entry.
6118 */
6119 lua_pushstring(L, value);
6120 ret = lua_rawlen(L, -2);
6121 lua_rawseti(L, -2, ret + 1);
6122
6123 lua_pushboolean(L, 1);
6124 return 1;
6125}
6126
6127/* Remove all occurrences of a given header name. */
6128__LJMP static int hlua_txn_reply_del_header(lua_State *L)
6129{
6130 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
6131 int ret;
6132
6133 /* First argument (self) must be a table */
6134 luaL_checktype(L, 1, LUA_TTABLE);
6135
6136 /* Push in the stack the "headers" entry. */
6137 ret = lua_getfield(L, 1, "headers");
6138 if (ret != LUA_TTABLE) {
6139 hlua_pusherror(L, "Reply['headers'] is expected to be an array. %s found", lua_typename(L, ret));
6140 WILL_LJMP(lua_error(L));
6141 }
6142
6143 lua_pushstring(L, name);
6144 lua_pushnil(L);
6145 lua_settable(L, -3);
6146
6147 lua_pushboolean(L, 1);
6148 return 1;
6149}
6150
6151/* Set the reply's body. Overwrite any existing entry. */
6152__LJMP static int hlua_txn_reply_set_body(lua_State *L)
6153{
6154 const char *payload = MAY_LJMP(luaL_checkstring(L, 2));
6155
6156 /* First argument (self) must be a table */
6157 luaL_checktype(L, 1, LUA_TTABLE);
6158
6159 lua_pushstring(L, payload);
6160 lua_setfield(L, 1, "body");
6161
6162 lua_pushboolean(L, 1);
6163 return 1;
6164}
6165
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01006166__LJMP static int hlua_log(lua_State *L)
6167{
6168 int level;
6169 const char *msg;
6170
6171 MAY_LJMP(check_args(L, 2, "log"));
6172 level = MAY_LJMP(luaL_checkinteger(L, 1));
6173 msg = MAY_LJMP(luaL_checkstring(L, 2));
6174
6175 if (level < 0 || level >= NB_LOG_LEVELS)
6176 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
6177
6178 hlua_sendlog(NULL, level, msg);
6179 return 0;
6180}
6181
6182__LJMP static int hlua_log_debug(lua_State *L)
6183{
6184 const char *msg;
6185
6186 MAY_LJMP(check_args(L, 1, "debug"));
6187 msg = MAY_LJMP(luaL_checkstring(L, 1));
6188 hlua_sendlog(NULL, LOG_DEBUG, msg);
6189 return 0;
6190}
6191
6192__LJMP static int hlua_log_info(lua_State *L)
6193{
6194 const char *msg;
6195
6196 MAY_LJMP(check_args(L, 1, "info"));
6197 msg = MAY_LJMP(luaL_checkstring(L, 1));
6198 hlua_sendlog(NULL, LOG_INFO, msg);
6199 return 0;
6200}
6201
6202__LJMP static int hlua_log_warning(lua_State *L)
6203{
6204 const char *msg;
6205
6206 MAY_LJMP(check_args(L, 1, "warning"));
6207 msg = MAY_LJMP(luaL_checkstring(L, 1));
6208 hlua_sendlog(NULL, LOG_WARNING, msg);
6209 return 0;
6210}
6211
6212__LJMP static int hlua_log_alert(lua_State *L)
6213{
6214 const char *msg;
6215
6216 MAY_LJMP(check_args(L, 1, "alert"));
6217 msg = MAY_LJMP(luaL_checkstring(L, 1));
6218 hlua_sendlog(NULL, LOG_ALERT, msg);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01006219 return 0;
6220}
6221
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006222__LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006223{
6224 int wakeup_ms = lua_tointeger(L, -1);
6225 if (now_ms < wakeup_ms)
Willy Tarreau9635e032018-10-16 17:52:55 +02006226 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006227 return 0;
6228}
6229
6230__LJMP static int hlua_sleep(lua_State *L)
6231{
6232 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006233 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006234
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006235 MAY_LJMP(check_args(L, 1, "sleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006236
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006237 delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006238 wakeup_ms = tick_add(now_ms, delay);
6239 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006240
Willy Tarreau9635e032018-10-16 17:52:55 +02006241 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006242 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006243}
6244
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006245__LJMP static int hlua_msleep(lua_State *L)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006246{
6247 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006248 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006249
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006250 MAY_LJMP(check_args(L, 1, "msleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006251
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006252 delay = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006253 wakeup_ms = tick_add(now_ms, delay);
6254 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006255
Willy Tarreau9635e032018-10-16 17:52:55 +02006256 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006257 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006258}
6259
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006260/* This functionis an LUA binding. it permits to give back
6261 * the hand at the HAProxy scheduler. It is used when the
6262 * LUA processing consumes a lot of time.
6263 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006264__LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006265{
6266 return 0;
6267}
6268
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006269__LJMP static int hlua_yield(lua_State *L)
6270{
Willy Tarreau9635e032018-10-16 17:52:55 +02006271 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006272 return 0;
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006273}
6274
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006275/* This function change the nice of the currently executed
6276 * task. It is used set low or high priority at the current
6277 * task.
6278 */
Willy Tarreau59551662015-03-10 14:23:13 +01006279__LJMP static int hlua_set_nice(lua_State *L)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006280{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006281 struct hlua *hlua;
6282 int nice;
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006283
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006284 MAY_LJMP(check_args(L, 1, "set_nice"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006285 nice = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006286
Thierry Fournier4234dbd2020-11-28 13:18:23 +01006287 /* Get hlua struct, or NULL if we execute from main lua state */
6288 hlua = hlua_gethlua(L);
6289
6290 /* If the task is not set, I'm in a start mode. */
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006291 if (!hlua || !hlua->task)
6292 return 0;
6293
6294 if (nice < -1024)
6295 nice = -1024;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006296 else if (nice > 1024)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006297 nice = 1024;
6298
6299 hlua->task->nice = nice;
6300 return 0;
6301}
6302
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006303/* This function is used as a callback of a task. It is called by the
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006304 * HAProxy task subsystem when the task is awaked. The LUA runtime can
6305 * return an E_AGAIN signal, the emmiter of this signal must set a
6306 * signal to wake the task.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006307 *
6308 * Task wrapper are longjmp safe because the only one Lua code
6309 * executed is the safe hlua_ctx_resume();
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006310 */
Willy Tarreau144f84a2021-03-02 16:09:26 +01006311struct task *hlua_process_task(struct task *task, void *context, unsigned int state)
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006312{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006313 struct hlua *hlua = context;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006314 enum hlua_exec status;
6315
Christopher Faulet5bc99722018-04-25 10:34:45 +02006316 if (task->thread_mask == MAX_THREADS_MASK)
6317 task_set_affinity(task, tid_bit);
6318
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006319 /* If it is the first call to the task, we must initialize the
6320 * execution timeouts.
6321 */
6322 if (!HLUA_IS_RUNNING(hlua))
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006323 hlua->max_time = hlua_timeout_task;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006324
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006325 /* Execute the Lua code. */
6326 status = hlua_ctx_resume(hlua, 1);
6327
6328 switch (status) {
6329 /* finished or yield */
6330 case HLUA_E_OK:
6331 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006332 task_destroy(task);
Tim Duesterhuscd235c62018-04-24 13:56:01 +02006333 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006334 break;
6335
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006336 case HLUA_E_AGAIN: /* co process or timeout wake me later. */
Thierry FOURNIERcb146882017-12-10 17:10:57 +01006337 notification_gc(&hlua->com);
PiBa-NLfe971b32018-05-02 22:27:14 +02006338 task->expire = hlua->wake_time;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006339 break;
6340
6341 /* finished with error. */
6342 case HLUA_E_ERRMSG:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006343 SEND_ERR(NULL, "Lua task: %s.\n", lua_tostring(hlua->T, -1));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006344 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006345 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006346 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006347 break;
6348
6349 case HLUA_E_ERR:
6350 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006351 SEND_ERR(NULL, "Lua task: unknown error.\n");
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006352 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006353 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006354 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006355 break;
6356 }
Emeric Brun253e53e2017-10-17 18:58:40 +02006357 return task;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006358}
6359
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006360/* This function is an LUA binding that register LUA function to be
6361 * executed after the HAProxy configuration parsing and before the
6362 * HAProxy scheduler starts. This function expect only one LUA
6363 * argument that is a function. This function returns nothing, but
6364 * throws if an error is encountered.
6365 */
6366__LJMP static int hlua_register_init(lua_State *L)
6367{
6368 struct hlua_init_function *init;
6369 int ref;
6370
6371 MAY_LJMP(check_args(L, 1, "register_init"));
6372
6373 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6374
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006375 init = calloc(1, sizeof(*init));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006376 if (!init)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006377 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006378
6379 init->function_ref = ref;
Thierry Fournierc7492592020-11-28 23:57:24 +01006380 LIST_ADDQ(&hlua_init_functions[hlua_state_id], &init->l);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006381 return 0;
6382}
6383
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006384/* This functio is an LUA binding. It permits to register a task
6385 * executed in parallel of the main HAroxy activity. The task is
6386 * created and it is set in the HAProxy scheduler. It can be called
6387 * from the "init" section, "post init" or during the runtime.
6388 *
6389 * Lua prototype:
6390 *
6391 * <none> core.register_task(<function>)
6392 */
6393static int hlua_register_task(lua_State *L)
6394{
6395 struct hlua *hlua;
6396 struct task *task;
6397 int ref;
Thierry Fournier021d9862020-11-28 23:42:03 +01006398 int state_id;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006399
6400 MAY_LJMP(check_args(L, 1, "register_task"));
6401
6402 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6403
Thierry Fournier75fc0292020-11-28 13:18:56 +01006404 /* Get the reference state. If the reference is NULL, L is the master
6405 * state, otherwise hlua->T is.
6406 */
6407 hlua = hlua_gethlua(L);
6408 if (hlua)
Thierry Fournier021d9862020-11-28 23:42:03 +01006409 /* we are in runtime processing */
6410 state_id = hlua->state_id;
Thierry Fournier75fc0292020-11-28 13:18:56 +01006411 else
Thierry Fournier021d9862020-11-28 23:42:03 +01006412 /* we are in initialization mode */
Thierry Fournierc7492592020-11-28 23:57:24 +01006413 state_id = hlua_state_id;
Thierry Fournier75fc0292020-11-28 13:18:56 +01006414
Willy Tarreaubafbe012017-11-24 17:34:44 +01006415 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006416 if (!hlua)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006417 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006418 HLUA_INIT(hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006419
Thierry Fournier59f11be2020-11-29 00:37:41 +01006420 /* We are in the common lua state, execute the task anywhere,
6421 * otherwise, inherit the current thread identifier
6422 */
6423 if (state_id == 0)
6424 task = task_new(MAX_THREADS_MASK);
6425 else
6426 task = task_new(tid_bit);
Willy Tarreaue09101e2018-10-16 17:37:12 +02006427 if (!task)
6428 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
6429
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006430 task->context = hlua;
6431 task->process = hlua_process_task;
6432
Thierry Fournier021d9862020-11-28 23:42:03 +01006433 if (!hlua_ctx_init(hlua, state_id, task, 1))
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006434 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006435
6436 /* Restore the function in the stack. */
6437 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref);
6438 hlua->nargs = 0;
6439
6440 /* Schedule task. */
6441 task_schedule(task, now_ms);
6442
6443 return 0;
6444}
6445
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006446/* Wrapper called by HAProxy to execute an LUA converter. This wrapper
6447 * doesn't allow "yield" functions because the HAProxy engine cannot
6448 * resume converters.
6449 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006450static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006451{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006452 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006453 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006454 const char *error;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006455
Willy Tarreaube508f12016-03-10 11:47:01 +01006456 if (!stream)
6457 return 0;
6458
Willy Tarreau87b09662015-04-03 00:22:06 +02006459 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006460 * Lua context can be not initialized. This behavior
6461 * permits to save performances because a systematic
6462 * Lua initialization cause 5% performances loss.
6463 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006464 if (!stream->hlua) {
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006465 struct hlua *hlua;
6466
6467 hlua = pool_alloc(pool_head_hlua);
6468 if (!hlua) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006469 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6470 return 0;
6471 }
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006472 HLUA_INIT(hlua);
6473 stream->hlua = hlua;
Thierry Fournierc7492592020-11-28 23:57:24 +01006474 if (!hlua_ctx_init(stream->hlua, fcn_ref_to_stack_id(fcn), stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006475 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6476 return 0;
6477 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006478 }
6479
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006480 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006481 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006482
6483 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006484 if (!SET_SAFE_LJMP(stream->hlua)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006485 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6486 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006487 else
6488 error = "critical error";
6489 SEND_ERR(stream->be, "Lua converter '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006490 return 0;
6491 }
6492
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006493 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006494 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006495 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006496 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006497 return 0;
6498 }
6499
6500 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01006501 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref[stream->hlua->state_id]);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006502
6503 /* convert input sample and pust-it in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006504 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006505 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006506 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006507 return 0;
6508 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006509 hlua_smp2lua(stream->hlua->T, smp);
6510 stream->hlua->nargs = 1;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006511
6512 /* push keywords in the stack. */
6513 if (arg_p) {
6514 for (; arg_p->type != ARGT_STOP; arg_p++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006515 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006516 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006517 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006518 return 0;
6519 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006520 hlua_arg2lua(stream->hlua->T, arg_p);
6521 stream->hlua->nargs++;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006522 }
6523 }
6524
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006525 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006526 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006527
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006528 /* At this point the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006529 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006530 }
6531
6532 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006533 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006534 /* finished. */
6535 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006536 /* If the stack is empty, the function fails. */
6537 if (lua_gettop(stream->hlua->T) <= 0)
6538 return 0;
6539
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006540 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006541 hlua_lua2smp(stream->hlua->T, -1, smp);
6542 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006543 return 1;
6544
6545 /* yield. */
6546 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006547 SEND_ERR(stream->be, "Lua converter '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006548 return 0;
6549
6550 /* finished with error. */
6551 case HLUA_E_ERRMSG:
6552 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006553 SEND_ERR(stream->be, "Lua converter '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006554 fcn->name, lua_tostring(stream->hlua->T, -1));
6555 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006556 return 0;
6557
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006558 case HLUA_E_ETMOUT:
6559 SEND_ERR(stream->be, "Lua converter '%s': execution timeout.\n", fcn->name);
6560 return 0;
6561
6562 case HLUA_E_NOMEM:
6563 SEND_ERR(stream->be, "Lua converter '%s': out of memory error.\n", fcn->name);
6564 return 0;
6565
6566 case HLUA_E_YIELD:
6567 SEND_ERR(stream->be, "Lua converter '%s': yield functions like core.tcp() or core.sleep() are not allowed.\n", fcn->name);
6568 return 0;
6569
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006570 case HLUA_E_ERR:
6571 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006572 SEND_ERR(stream->be, "Lua converter '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006573 /* fall through */
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006574
6575 default:
6576 return 0;
6577 }
6578}
6579
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006580/* Wrapper called by HAProxy to execute a sample-fetch. this wrapper
6581 * doesn't allow "yield" functions because the HAProxy engine cannot
Willy Tarreaube508f12016-03-10 11:47:01 +01006582 * resume sample-fetches. This function will be called by the sample
6583 * fetch engine to call lua-based fetch operations.
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006584 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +02006585static int hlua_sample_fetch_wrapper(const struct arg *arg_p, struct sample *smp,
6586 const char *kw, void *private)
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006587{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006588 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006589 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006590 const char *error;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006591 unsigned int hflags = HLUA_TXN_NOTERM;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006592
Willy Tarreaube508f12016-03-10 11:47:01 +01006593 if (!stream)
6594 return 0;
Christopher Fauletafd8f102018-11-08 11:34:21 +01006595
Willy Tarreau87b09662015-04-03 00:22:06 +02006596 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006597 * Lua context can be not initialized. This behavior
6598 * permits to save performances because a systematic
6599 * Lua initialization cause 5% performances loss.
6600 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006601 if (!stream->hlua) {
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006602 struct hlua *hlua;
6603
6604 hlua = pool_alloc(pool_head_hlua);
6605 if (!hlua) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006606 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6607 return 0;
6608 }
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006609 hlua->T = NULL;
6610 stream->hlua = hlua;
Thierry Fournierc7492592020-11-28 23:57:24 +01006611 if (!hlua_ctx_init(stream->hlua, fcn_ref_to_stack_id(fcn), stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006612 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6613 return 0;
6614 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006615 }
6616
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006617 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006618 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006619
6620 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006621 if (!SET_SAFE_LJMP(stream->hlua)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006622 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6623 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006624 else
6625 error = "critical error";
6626 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006627 return 0;
6628 }
6629
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006630 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006631 if (!lua_checkstack(stream->hlua->T, 2)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006632 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006633 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006634 return 0;
6635 }
6636
6637 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01006638 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref[stream->hlua->state_id]);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006639
6640 /* push arguments in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006641 if (!hlua_txn_new(stream->hlua->T, stream, smp->px, smp->opt & SMP_OPT_DIR, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006642 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006643 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006644 return 0;
6645 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006646 stream->hlua->nargs = 1;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006647
6648 /* push keywords in the stack. */
6649 for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) {
6650 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006651 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006652 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006653 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006654 return 0;
6655 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006656 hlua_arg2lua(stream->hlua->T, arg_p);
6657 stream->hlua->nargs++;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006658 }
6659
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006660 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006661 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006662
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006663 /* At this point the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006664 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006665 }
6666
6667 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006668 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006669 /* finished. */
6670 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006671 /* If the stack is empty, the function fails. */
6672 if (lua_gettop(stream->hlua->T) <= 0)
6673 return 0;
6674
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006675 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006676 hlua_lua2smp(stream->hlua->T, -1, smp);
6677 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006678
6679 /* Set the end of execution flag. */
6680 smp->flags &= ~SMP_F_MAY_CHANGE;
6681 return 1;
6682
6683 /* yield. */
6684 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006685 SEND_ERR(smp->px, "Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006686 return 0;
6687
6688 /* finished with error. */
6689 case HLUA_E_ERRMSG:
6690 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006691 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006692 fcn->name, lua_tostring(stream->hlua->T, -1));
6693 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006694 return 0;
6695
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006696 case HLUA_E_ETMOUT:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006697 SEND_ERR(smp->px, "Lua sample-fetch '%s': execution timeout.\n", fcn->name);
6698 return 0;
6699
6700 case HLUA_E_NOMEM:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006701 SEND_ERR(smp->px, "Lua sample-fetch '%s': out of memory error.\n", fcn->name);
6702 return 0;
6703
6704 case HLUA_E_YIELD:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006705 SEND_ERR(smp->px, "Lua sample-fetch '%s': yield not allowed.\n", fcn->name);
6706 return 0;
6707
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006708 case HLUA_E_ERR:
6709 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006710 SEND_ERR(smp->px, "Lua sample-fetch '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006711 /* fall through */
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006712
6713 default:
6714 return 0;
6715 }
6716}
6717
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006718/* This function is an LUA binding used for registering
6719 * "sample-conv" functions. It expects a converter name used
6720 * in the haproxy configuration file, and an LUA function.
6721 */
6722__LJMP static int hlua_register_converters(lua_State *L)
6723{
6724 struct sample_conv_kw_list *sck;
6725 const char *name;
6726 int ref;
6727 int len;
6728 struct hlua_function *fcn;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006729 struct sample_conv *sc;
6730 struct buffer *trash;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006731
6732 MAY_LJMP(check_args(L, 2, "register_converters"));
6733
6734 /* First argument : converter name. */
6735 name = MAY_LJMP(luaL_checkstring(L, 1));
6736
6737 /* Second argument : lua function. */
6738 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6739
Thierry Fournierf67442e2020-11-28 20:41:07 +01006740 /* Check if the converter is already registered */
6741 trash = get_trash_chunk();
6742 chunk_printf(trash, "lua.%s", name);
6743 sc = find_sample_conv(trash->area, trash->data);
6744 if (sc != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01006745 fcn = sc->private;
6746 if (fcn->function_ref[hlua_state_id] != -1) {
6747 ha_warning("Trying to register converter 'lua.%s' more than once. "
6748 "This will become a hard error in version 2.5.\n", name);
6749 }
6750 fcn->function_ref[hlua_state_id] = ref;
6751 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006752 }
6753
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006754 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006755 sck = calloc(1, sizeof(*sck) + sizeof(struct sample_conv) * 2);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006756 if (!sck)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006757 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01006758 fcn = new_hlua_function();
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006759 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006760 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006761
6762 /* Fill fcn. */
6763 fcn->name = strdup(name);
6764 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006765 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournierc7492592020-11-28 23:57:24 +01006766 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006767
6768 /* List head */
6769 sck->list.n = sck->list.p = NULL;
6770
6771 /* converter keyword. */
6772 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006773 sck->kw[0].kw = calloc(1, len);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006774 if (!sck->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006775 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006776
6777 snprintf((char *)sck->kw[0].kw, len, "lua.%s", name);
6778 sck->kw[0].process = hlua_sample_conv_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006779 sck->kw[0].arg_mask = ARG12(0,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006780 sck->kw[0].val_args = NULL;
6781 sck->kw[0].in_type = SMP_T_STR;
6782 sck->kw[0].out_type = SMP_T_STR;
6783 sck->kw[0].private = fcn;
6784
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006785 /* Register this new converter */
6786 sample_register_convs(sck);
6787
6788 return 0;
6789}
6790
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006791/* This function is an LUA binding used for registering
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006792 * "sample-fetch" functions. It expects a converter name used
6793 * in the haproxy configuration file, and an LUA function.
6794 */
6795__LJMP static int hlua_register_fetches(lua_State *L)
6796{
6797 const char *name;
6798 int ref;
6799 int len;
6800 struct sample_fetch_kw_list *sfk;
6801 struct hlua_function *fcn;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006802 struct sample_fetch *sf;
6803 struct buffer *trash;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006804
6805 MAY_LJMP(check_args(L, 2, "register_fetches"));
6806
6807 /* First argument : sample-fetch name. */
6808 name = MAY_LJMP(luaL_checkstring(L, 1));
6809
6810 /* Second argument : lua function. */
6811 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6812
Thierry Fournierf67442e2020-11-28 20:41:07 +01006813 /* Check if the sample-fetch is already registered */
6814 trash = get_trash_chunk();
6815 chunk_printf(trash, "lua.%s", name);
6816 sf = find_sample_fetch(trash->area, trash->data);
6817 if (sf != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01006818 fcn = sf->private;
6819 if (fcn->function_ref[hlua_state_id] != -1) {
6820 ha_warning("Trying to register sample-fetch 'lua.%s' more than once. "
6821 "This will become a hard error in version 2.5.\n", name);
6822 }
6823 fcn->function_ref[hlua_state_id] = ref;
6824 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006825 }
6826
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006827 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006828 sfk = calloc(1, sizeof(*sfk) + sizeof(struct sample_fetch) * 2);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006829 if (!sfk)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006830 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01006831 fcn = new_hlua_function();
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006832 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006833 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006834
6835 /* Fill fcn. */
6836 fcn->name = strdup(name);
6837 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006838 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournierc7492592020-11-28 23:57:24 +01006839 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006840
6841 /* List head */
6842 sfk->list.n = sfk->list.p = NULL;
6843
6844 /* sample-fetch keyword. */
6845 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006846 sfk->kw[0].kw = calloc(1, len);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006847 if (!sfk->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006848 return luaL_error(L, "Lua out of memory error.");
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006849
6850 snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name);
6851 sfk->kw[0].process = hlua_sample_fetch_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006852 sfk->kw[0].arg_mask = ARG12(0,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006853 sfk->kw[0].val_args = NULL;
6854 sfk->kw[0].out_type = SMP_T_STR;
6855 sfk->kw[0].use = SMP_USE_HTTP_ANY;
6856 sfk->kw[0].val = 0;
6857 sfk->kw[0].private = fcn;
6858
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006859 /* Register this new fetch. */
6860 sample_register_fetches(sfk);
6861
6862 return 0;
6863}
6864
Christopher Faulet501465d2020-02-26 14:54:16 +01006865/* This function is a lua binding to set the wake_time.
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006866 */
Christopher Faulet501465d2020-02-26 14:54:16 +01006867__LJMP static int hlua_set_wake_time(lua_State *L)
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006868{
Thierry Fournier4234dbd2020-11-28 13:18:23 +01006869 struct hlua *hlua;
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006870 unsigned int delay;
6871 unsigned int wakeup_ms;
6872
Thierry Fournier4234dbd2020-11-28 13:18:23 +01006873 /* Get hlua struct, or NULL if we execute from main lua state */
6874 hlua = hlua_gethlua(L);
6875 if (!hlua) {
6876 return 0;
6877 }
6878
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006879 MAY_LJMP(check_args(L, 1, "wake_time"));
6880
6881 delay = MAY_LJMP(luaL_checkinteger(L, 1));
6882 wakeup_ms = tick_add(now_ms, delay);
6883 hlua->wake_time = wakeup_ms;
6884 return 0;
6885}
6886
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006887/* This function is a wrapper to execute each LUA function declared as an action
6888 * wrapper during the initialisation period. This function may return any
6889 * ACT_RET_* value. On error ACT_RET_CONT is returned and the action is
6890 * ignored. If the lua action yields, ACT_RET_YIELD is returned. On success, the
6891 * return value is the first element on the stack.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006892 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006893static enum act_return hlua_action(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +02006894 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006895{
6896 char **arg;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006897 unsigned int hflags = 0;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006898 int dir, act_ret = ACT_RET_CONT;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006899 const char *error;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006900
6901 switch (rule->from) {
Christopher Fauletd8f0e072020-02-25 09:45:51 +01006902 case ACT_F_TCP_REQ_CNT: dir = SMP_OPT_DIR_REQ; break;
6903 case ACT_F_TCP_RES_CNT: dir = SMP_OPT_DIR_RES; break;
6904 case ACT_F_HTTP_REQ: dir = SMP_OPT_DIR_REQ; break;
6905 case ACT_F_HTTP_RES: dir = SMP_OPT_DIR_RES; break;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006906 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006907 SEND_ERR(px, "Lua: internal error while execute action.\n");
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006908 goto end;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006909 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006910
Willy Tarreau87b09662015-04-03 00:22:06 +02006911 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006912 * Lua context can be not initialized. This behavior
6913 * permits to save performances because a systematic
6914 * Lua initialization cause 5% performances loss.
6915 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006916 if (!s->hlua) {
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006917 struct hlua *hlua;
6918
6919 hlua = pool_alloc(pool_head_hlua);
6920 if (!hlua) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006921 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006922 rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006923 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006924 }
Christopher Faulet1e8433f2021-03-24 15:03:01 +01006925 HLUA_INIT(hlua);
6926 s->hlua = hlua;
Thierry Fournierc7492592020-11-28 23:57:24 +01006927 if (!hlua_ctx_init(s->hlua, fcn_ref_to_stack_id(rule->arg.hlua_rule->fcn), s->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006928 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006929 rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006930 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006931 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006932 }
6933
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006934 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006935 if (!HLUA_IS_RUNNING(s->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006936
6937 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006938 if (!SET_SAFE_LJMP(s->hlua)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006939 if (lua_type(s->hlua->T, -1) == LUA_TSTRING)
6940 error = lua_tostring(s->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006941 else
6942 error = "critical error";
6943 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006944 rule->arg.hlua_rule->fcn->name, error);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006945 goto end;
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006946 }
6947
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006948 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006949 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006950 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006951 rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006952 RESET_SAFE_LJMP(s->hlua);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006953 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006954 }
6955
6956 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01006957 lua_rawgeti(s->hlua->T, LUA_REGISTRYINDEX, rule->arg.hlua_rule->fcn->function_ref[s->hlua->state_id]);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006958
Willy Tarreau87b09662015-04-03 00:22:06 +02006959 /* Create and and push object stream in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006960 if (!hlua_txn_new(s->hlua->T, s, px, dir, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006961 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006962 rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006963 RESET_SAFE_LJMP(s->hlua);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006964 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006965 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006966 s->hlua->nargs = 1;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006967
6968 /* push keywords in the stack. */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006969 for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006970 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006971 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006972 rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006973 RESET_SAFE_LJMP(s->hlua);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006974 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006975 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006976 lua_pushstring(s->hlua->T, *arg);
6977 s->hlua->nargs++;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006978 }
6979
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006980 /* Now the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006981 RESET_SAFE_LJMP(s->hlua);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006982
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006983 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006984 s->hlua->max_time = hlua_timeout_session;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006985 }
6986
6987 /* Execute the function. */
Christopher Faulet105ba6c2019-12-18 14:41:51 +01006988 switch (hlua_ctx_resume(s->hlua, !(flags & ACT_OPT_FINAL))) {
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006989 /* finished. */
6990 case HLUA_E_OK:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006991 /* Catch the return value */
6992 if (lua_gettop(s->hlua->T) > 0)
6993 act_ret = lua_tointeger(s->hlua->T, -1);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006994
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006995 /* Set timeout in the required channel. */
Christopher Faulet498c4832020-07-28 11:59:58 +02006996 if (act_ret == ACT_RET_YIELD) {
6997 if (flags & ACT_OPT_FINAL)
6998 goto err_yield;
6999
Christopher Faulet8f587ea2020-07-28 12:01:55 +02007000 if (dir == SMP_OPT_DIR_REQ)
7001 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
7002 s->hlua->wake_time);
7003 else
7004 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
7005 s->hlua->wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01007006 }
7007 goto end;
7008
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007009 /* yield. */
7010 case HLUA_E_AGAIN:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01007011 /* Set timeout in the required channel. */
Christopher Faulet8f587ea2020-07-28 12:01:55 +02007012 if (dir == SMP_OPT_DIR_REQ)
7013 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
7014 s->hlua->wake_time);
7015 else
7016 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
7017 s->hlua->wake_time);
7018
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007019 /* Some actions can be wake up when a "write" event
7020 * is detected on a response channel. This is useful
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007021 * only for actions targeted on the requests.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007022 */
Christopher Faulet51fa3582019-07-26 14:54:52 +02007023 if (HLUA_IS_WAKERESWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007024 s->res.flags |= CF_WAKE_WRITE;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01007025 if (HLUA_IS_WAKEREQWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007026 s->req.flags |= CF_WAKE_WRITE;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007027 act_ret = ACT_RET_YIELD;
7028 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007029
7030 /* finished with error. */
7031 case HLUA_E_ERRMSG:
7032 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02007033 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007034 rule->arg.hlua_rule->fcn->name, lua_tostring(s->hlua->T, -1));
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01007035 lua_pop(s->hlua->T, 1);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007036 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007037
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007038 case HLUA_E_ETMOUT:
Thierry Fournierad5345f2020-11-29 02:05:57 +01007039 SEND_ERR(px, "Lua function '%s': execution timeout.\n", rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007040 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007041
7042 case HLUA_E_NOMEM:
Thierry Fournierad5345f2020-11-29 02:05:57 +01007043 SEND_ERR(px, "Lua function '%s': out of memory error.\n", rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007044 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007045
7046 case HLUA_E_YIELD:
Christopher Faulet498c4832020-07-28 11:59:58 +02007047 err_yield:
7048 act_ret = ACT_RET_CONT;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007049 SEND_ERR(px, "Lua function '%s': aborting Lua processing on expired timeout.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007050 rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007051 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007052
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007053 case HLUA_E_ERR:
7054 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02007055 SEND_ERR(px, "Lua function '%s' return an unknown error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007056 rule->arg.hlua_rule->fcn->name);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007057
7058 default:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007059 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007060 }
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007061
7062 end:
Christopher Faulet2361fd92020-07-30 10:40:58 +02007063 if (act_ret != ACT_RET_YIELD && s->hlua)
Christopher Faulet8f587ea2020-07-28 12:01:55 +02007064 s->hlua->wake_time = TICK_ETERNITY;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007065 return act_ret;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007066}
7067
Willy Tarreau144f84a2021-03-02 16:09:26 +01007068struct task *hlua_applet_wakeup(struct task *t, void *context, unsigned int state)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007069{
Olivier Houchard9f6af332018-05-25 14:04:04 +02007070 struct appctx *ctx = context;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007071
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007072 appctx_wakeup(ctx);
Willy Tarreaud9587412017-08-23 16:07:33 +02007073 t->expire = TICK_ETERNITY;
Willy Tarreaud1aa41f2017-07-21 16:41:56 +02007074 return t;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007075}
7076
7077static int hlua_applet_tcp_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7078{
7079 struct stream_interface *si = ctx->owner;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007080 struct hlua *hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007081 struct task *task;
7082 char **arg;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007083 const char *error;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007084
Willy Tarreaubafbe012017-11-24 17:34:44 +01007085 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007086 if (!hlua) {
7087 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007088 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007089 return 0;
7090 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007091 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007092 ctx->ctx.hlua_apptcp.hlua = hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007093 ctx->ctx.hlua_apptcp.flags = 0;
7094
7095 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007096 task = task_new(tid_bit);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007097 if (!task) {
7098 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007099 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007100 return 0;
7101 }
7102 task->nice = 0;
7103 task->context = ctx;
7104 task->process = hlua_applet_wakeup;
7105 ctx->ctx.hlua_apptcp.task = task;
7106
7107 /* In the execution wrappers linked with a stream, the
7108 * Lua context can be not initialized. This behavior
7109 * permits to save performances because a systematic
7110 * Lua initialization cause 5% performances loss.
7111 */
Thierry Fournierc7492592020-11-28 23:57:24 +01007112 if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(ctx->rule->arg.hlua_rule->fcn), task, 0)) {
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007113 SEND_ERR(px, "Lua applet tcp '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007114 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007115 return 0;
7116 }
7117
7118 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007119 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007120
7121 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007122 if (!SET_SAFE_LJMP(hlua)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007123 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7124 error = lua_tostring(hlua->T, -1);
7125 else
7126 error = "critical error";
7127 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007128 ctx->rule->arg.hlua_rule->fcn->name, error);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007129 return 0;
7130 }
7131
7132 /* Check stack available size. */
7133 if (!lua_checkstack(hlua->T, 1)) {
7134 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007135 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007136 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007137 return 0;
7138 }
7139
7140 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01007141 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007142
7143 /* Create and and push object stream in the stack. */
7144 if (!hlua_applet_tcp_new(hlua->T, ctx)) {
7145 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007146 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007147 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007148 return 0;
7149 }
7150 hlua->nargs = 1;
7151
7152 /* push keywords in the stack. */
7153 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7154 if (!lua_checkstack(hlua->T, 1)) {
7155 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007156 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007157 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007158 return 0;
7159 }
7160 lua_pushstring(hlua->T, *arg);
7161 hlua->nargs++;
7162 }
7163
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007164 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007165
7166 /* Wakeup the applet ASAP. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007167 si_cant_get(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01007168 si_rx_endp_more(si);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007169
7170 return 1;
7171}
7172
Willy Tarreau60409db2019-08-21 14:14:50 +02007173void hlua_applet_tcp_fct(struct appctx *ctx)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007174{
7175 struct stream_interface *si = ctx->owner;
7176 struct stream *strm = si_strm(si);
7177 struct channel *res = si_ic(si);
7178 struct act_rule *rule = ctx->rule;
7179 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007180 struct hlua *hlua = ctx->ctx.hlua_apptcp.hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007181
7182 /* The applet execution is already done. */
Olivier Houchard594c8c52018-08-28 14:41:31 +02007183 if (ctx->ctx.hlua_apptcp.flags & APPLET_DONE) {
7184 /* eat the whole request */
7185 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007186 return;
Olivier Houchard594c8c52018-08-28 14:41:31 +02007187 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007188
7189 /* If the stream is disconnect or closed, ldo nothing. */
7190 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7191 return;
7192
7193 /* Execute the function. */
7194 switch (hlua_ctx_resume(hlua, 1)) {
7195 /* finished. */
7196 case HLUA_E_OK:
7197 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7198
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007199 /* eat the whole request */
Willy Tarreaua79021a2018-06-15 18:07:57 +02007200 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007201 res->flags |= CF_READ_NULL;
7202 si_shutr(si);
7203 return;
7204
7205 /* yield. */
7206 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01007207 if (hlua->wake_time != TICK_ETERNITY)
7208 task_schedule(ctx->ctx.hlua_apptcp.task, hlua->wake_time);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007209 return;
7210
7211 /* finished with error. */
7212 case HLUA_E_ERRMSG:
7213 /* Display log. */
7214 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007215 rule->arg.hlua_rule->fcn->name, lua_tostring(hlua->T, -1));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007216 lua_pop(hlua->T, 1);
7217 goto error;
7218
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007219 case HLUA_E_ETMOUT:
7220 SEND_ERR(px, "Lua applet tcp '%s': execution timeout.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007221 rule->arg.hlua_rule->fcn->name);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007222 goto error;
7223
7224 case HLUA_E_NOMEM:
7225 SEND_ERR(px, "Lua applet tcp '%s': out of memory error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007226 rule->arg.hlua_rule->fcn->name);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007227 goto error;
7228
7229 case HLUA_E_YIELD: /* unexpected */
7230 SEND_ERR(px, "Lua applet tcp '%s': yield not allowed.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007231 rule->arg.hlua_rule->fcn->name);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007232 goto error;
7233
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007234 case HLUA_E_ERR:
7235 /* Display log. */
7236 SEND_ERR(px, "Lua applet tcp '%s' return an unknown error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007237 rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007238 goto error;
7239
7240 default:
7241 goto error;
7242 }
7243
7244error:
7245
7246 /* For all other cases, just close the stream. */
7247 si_shutw(si);
7248 si_shutr(si);
7249 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7250}
7251
7252static void hlua_applet_tcp_release(struct appctx *ctx)
7253{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007254 task_destroy(ctx->ctx.hlua_apptcp.task);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007255 ctx->ctx.hlua_apptcp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007256 hlua_ctx_destroy(ctx->ctx.hlua_apptcp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007257 ctx->ctx.hlua_apptcp.hlua = NULL;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007258}
7259
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007260/* The function returns 1 if the initialisation is complete, 0 if
7261 * an errors occurs and -1 if more data are required for initializing
7262 * the applet.
7263 */
7264static int hlua_applet_http_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7265{
7266 struct stream_interface *si = ctx->owner;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007267 struct http_txn *txn;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007268 struct hlua *hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007269 char **arg;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007270 struct task *task;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007271 const char *error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007272
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007273 txn = strm->txn;
Willy Tarreaubafbe012017-11-24 17:34:44 +01007274 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007275 if (!hlua) {
7276 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007277 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007278 return 0;
7279 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007280 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007281 ctx->ctx.hlua_apphttp.hlua = hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007282 ctx->ctx.hlua_apphttp.left_bytes = -1;
7283 ctx->ctx.hlua_apphttp.flags = 0;
7284
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01007285 if (txn->req.flags & HTTP_MSGF_VER_11)
7286 ctx->ctx.hlua_apphttp.flags |= APPLET_HTTP11;
7287
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007288 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007289 task = task_new(tid_bit);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007290 if (!task) {
7291 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007292 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007293 return 0;
7294 }
7295 task->nice = 0;
7296 task->context = ctx;
7297 task->process = hlua_applet_wakeup;
7298 ctx->ctx.hlua_apphttp.task = task;
7299
7300 /* In the execution wrappers linked with a stream, the
7301 * Lua context can be not initialized. This behavior
7302 * permits to save performances because a systematic
7303 * Lua initialization cause 5% performances loss.
7304 */
Thierry Fournierc7492592020-11-28 23:57:24 +01007305 if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(ctx->rule->arg.hlua_rule->fcn), task, 0)) {
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007306 SEND_ERR(px, "Lua applet http '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007307 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007308 return 0;
7309 }
7310
7311 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007312 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007313
7314 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007315 if (!SET_SAFE_LJMP(hlua)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007316 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7317 error = lua_tostring(hlua->T, -1);
7318 else
7319 error = "critical error";
7320 SEND_ERR(px, "Lua applet http '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007321 ctx->rule->arg.hlua_rule->fcn->name, error);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007322 return 0;
7323 }
7324
7325 /* Check stack available size. */
7326 if (!lua_checkstack(hlua->T, 1)) {
7327 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007328 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007329 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007330 return 0;
7331 }
7332
7333 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01007334 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007335
7336 /* Create and and push object stream in the stack. */
7337 if (!hlua_applet_http_new(hlua->T, ctx)) {
7338 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007339 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007340 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007341 return 0;
7342 }
7343 hlua->nargs = 1;
7344
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007345 /* push keywords in the stack. */
7346 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7347 if (!lua_checkstack(hlua->T, 1)) {
7348 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007349 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007350 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007351 return 0;
7352 }
7353 lua_pushstring(hlua->T, *arg);
7354 hlua->nargs++;
7355 }
7356
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007357 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007358
7359 /* Wakeup the applet when data is ready for read. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007360 si_cant_get(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007361
7362 return 1;
7363}
7364
Willy Tarreau60409db2019-08-21 14:14:50 +02007365void hlua_applet_http_fct(struct appctx *ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007366{
7367 struct stream_interface *si = ctx->owner;
7368 struct stream *strm = si_strm(si);
7369 struct channel *req = si_oc(si);
7370 struct channel *res = si_ic(si);
7371 struct act_rule *rule = ctx->rule;
7372 struct proxy *px = strm->be;
7373 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
7374 struct htx *req_htx, *res_htx;
7375
7376 res_htx = htx_from_buf(&res->buf);
7377
7378 /* If the stream is disconnect or closed, ldo nothing. */
7379 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7380 goto out;
7381
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007382 /* Check if the input buffer is available. */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007383 if (!b_size(&res->buf)) {
7384 si_rx_room_blk(si);
7385 goto out;
7386 }
7387 /* check that the output is not closed */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007388 if (res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_SHUTR))
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007389 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7390
7391 /* Set the currently running flag. */
7392 if (!HLUA_IS_RUNNING(hlua) &&
7393 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7394 struct htx_blk *blk;
7395 size_t count = co_data(req);
7396
7397 if (!count) {
7398 si_cant_get(si);
7399 goto out;
7400 }
7401
7402 /* We need to flush the request header. This left the body for
7403 * the Lua.
7404 */
7405 req_htx = htx_from_buf(&req->buf);
Christopher Fauleta3f15502019-05-13 15:27:23 +02007406 blk = htx_get_first_blk(req_htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007407 while (count && blk) {
7408 enum htx_blk_type type = htx_get_blk_type(blk);
7409 uint32_t sz = htx_get_blksz(blk);
7410
7411 if (sz > count) {
7412 si_cant_get(si);
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007413 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007414 goto out;
7415 }
7416
7417 count -= sz;
7418 co_set_data(req, co_data(req) - sz);
7419 blk = htx_remove_blk(req_htx, blk);
7420
7421 if (type == HTX_BLK_EOH)
7422 break;
7423 }
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007424 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007425 }
7426
7427 /* Executes The applet if it is not done. */
7428 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7429
7430 /* Execute the function. */
7431 switch (hlua_ctx_resume(hlua, 1)) {
7432 /* finished. */
7433 case HLUA_E_OK:
7434 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7435 break;
7436
7437 /* yield. */
7438 case HLUA_E_AGAIN:
7439 if (hlua->wake_time != TICK_ETERNITY)
7440 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007441 goto out;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007442
7443 /* finished with error. */
7444 case HLUA_E_ERRMSG:
7445 /* Display log. */
7446 SEND_ERR(px, "Lua applet http '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007447 rule->arg.hlua_rule->fcn->name, lua_tostring(hlua->T, -1));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007448 lua_pop(hlua->T, 1);
7449 goto error;
7450
7451 case HLUA_E_ETMOUT:
7452 SEND_ERR(px, "Lua applet http '%s': execution timeout.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007453 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007454 goto error;
7455
7456 case HLUA_E_NOMEM:
7457 SEND_ERR(px, "Lua applet http '%s': out of memory error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007458 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007459 goto error;
7460
7461 case HLUA_E_YIELD: /* unexpected */
7462 SEND_ERR(px, "Lua applet http '%s': yield not allowed.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007463 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007464 goto error;
7465
7466 case HLUA_E_ERR:
7467 /* Display log. */
7468 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007469 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007470 goto error;
7471
7472 default:
7473 goto error;
7474 }
7475 }
7476
7477 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007478 if (ctx->ctx.hlua_apphttp.flags & APPLET_RSP_SENT)
7479 goto done;
7480
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007481 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT))
7482 goto error;
7483
Christopher Fauletd1ac2b92020-12-02 19:12:22 +01007484 /* no more data are expected. Don't add TLR because mux-h1 will take care of it */
7485 res_htx->flags |= HTX_FL_EOM;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007486 strm->txn->status = ctx->ctx.hlua_apphttp.status;
7487 ctx->ctx.hlua_apphttp.flags |= APPLET_RSP_SENT;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007488 }
7489
7490 done:
7491 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007492 if (!(res->flags & CF_SHUTR)) {
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007493 res->flags |= CF_READ_NULL;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007494 si_shutr(si);
7495 }
7496
7497 /* eat the whole request */
7498 if (co_data(req)) {
7499 req_htx = htx_from_buf(&req->buf);
7500 co_htx_skip(req, req_htx, co_data(req));
7501 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007502 }
7503 }
7504
7505 out:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007506 htx_to_buf(res_htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007507 return;
7508
7509 error:
7510
7511 /* If we are in HTTP mode, and we are not send any
7512 * data, return a 500 server error in best effort:
7513 * if there is no room available in the buffer,
7514 * just close the connection.
7515 */
7516 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
Christopher Fauletf7346382019-07-17 22:02:08 +02007517 struct buffer *err = &http_err_chunks[HTTP_ERR_500];
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007518
7519 channel_erase(res);
7520 res->buf.data = b_data(err);
7521 memcpy(res->buf.area, b_head(err), b_data(err));
7522 res_htx = htx_from_buf(&res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007523 channel_add_input(res, res_htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007524 }
7525 if (!(strm->flags & SF_ERR_MASK))
7526 strm->flags |= SF_ERR_RESOURCE;
7527 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7528 goto done;
7529}
7530
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007531static void hlua_applet_http_release(struct appctx *ctx)
7532{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007533 task_destroy(ctx->ctx.hlua_apphttp.task);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007534 ctx->ctx.hlua_apphttp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007535 hlua_ctx_destroy(ctx->ctx.hlua_apphttp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007536 ctx->ctx.hlua_apphttp.hlua = NULL;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007537}
7538
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007539/* global {tcp|http}-request parser. Return ACT_RET_PRS_OK in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007540 * success case, else return ACT_RET_PRS_ERR.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007541 *
7542 * This function can fail with an abort() due to an Lua critical error.
7543 * We are in the configuration parsing process of HAProxy, this abort() is
7544 * tolerated.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007545 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007546static enum act_parse_ret action_register_lua(const char **args, int *cur_arg, struct proxy *px,
7547 struct act_rule *rule, char **err)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007548{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007549 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007550 int i;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007551
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007552 /* Memory for the rule. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007553 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007554 if (!rule->arg.hlua_rule) {
7555 memprintf(err, "out of memory error");
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007556 return ACT_RET_PRS_ERR;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007557 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007558
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007559 /* Memory for arguments. */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02007560 rule->arg.hlua_rule->args = calloc(fcn->nargs + 1,
7561 sizeof(*rule->arg.hlua_rule->args));
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007562 if (!rule->arg.hlua_rule->args) {
7563 memprintf(err, "out of memory error");
7564 return ACT_RET_PRS_ERR;
7565 }
7566
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007567 /* Reference the Lua function and store the reference. */
Thierry Fournierad5345f2020-11-29 02:05:57 +01007568 rule->arg.hlua_rule->fcn = fcn;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007569
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007570 /* Expect some arguments */
7571 for (i = 0; i < fcn->nargs; i++) {
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007572 if (*args[*cur_arg] == '\0') {
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007573 memprintf(err, "expect %d arguments", fcn->nargs);
7574 return ACT_RET_PRS_ERR;
7575 }
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007576 rule->arg.hlua_rule->args[i] = strdup(args[*cur_arg]);
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007577 if (!rule->arg.hlua_rule->args[i]) {
7578 memprintf(err, "out of memory error");
7579 return ACT_RET_PRS_ERR;
7580 }
7581 (*cur_arg)++;
7582 }
7583 rule->arg.hlua_rule->args[i] = NULL;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007584
Thierry FOURNIER42148732015-09-02 17:17:33 +02007585 rule->action = ACT_CUSTOM;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007586 rule->action_ptr = hlua_action;
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007587 return ACT_RET_PRS_OK;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007588}
7589
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007590static enum act_parse_ret action_register_service_http(const char **args, int *cur_arg, struct proxy *px,
7591 struct act_rule *rule, char **err)
7592{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007593 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007594
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007595 /* HTTP applets are forbidden in tcp-request rules.
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007596 * HTTP applet request requires everything initialized by
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007597 * "http_process_request" (analyzer flag AN_REQ_HTTP_INNER).
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007598 * The applet will be immediately initialized, but its before
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007599 * the call of this analyzer.
7600 */
7601 if (rule->from != ACT_F_HTTP_REQ) {
7602 memprintf(err, "HTTP applets are forbidden from 'tcp-request' rulesets");
7603 return ACT_RET_PRS_ERR;
7604 }
7605
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007606 /* Memory for the rule. */
7607 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7608 if (!rule->arg.hlua_rule) {
7609 memprintf(err, "out of memory error");
7610 return ACT_RET_PRS_ERR;
7611 }
7612
7613 /* Reference the Lua function and store the reference. */
Thierry Fournierad5345f2020-11-29 02:05:57 +01007614 rule->arg.hlua_rule->fcn = fcn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007615
7616 /* TODO: later accept arguments. */
7617 rule->arg.hlua_rule->args = NULL;
7618
7619 /* Add applet pointer in the rule. */
7620 rule->applet.obj_type = OBJ_TYPE_APPLET;
7621 rule->applet.name = fcn->name;
7622 rule->applet.init = hlua_applet_http_init;
7623 rule->applet.fct = hlua_applet_http_fct;
7624 rule->applet.release = hlua_applet_http_release;
7625 rule->applet.timeout = hlua_timeout_applet;
7626
7627 return ACT_RET_PRS_OK;
7628}
7629
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007630/* This function is an LUA binding used for registering
7631 * "sample-conv" functions. It expects a converter name used
7632 * in the haproxy configuration file, and an LUA function.
7633 */
7634__LJMP static int hlua_register_action(lua_State *L)
7635{
7636 struct action_kw_list *akl;
7637 const char *name;
7638 int ref;
7639 int len;
7640 struct hlua_function *fcn;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007641 int nargs;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007642 struct buffer *trash;
7643 struct action_kw *akw;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007644
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007645 /* Initialise the number of expected arguments at 0. */
7646 nargs = 0;
7647
7648 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
7649 WILL_LJMP(luaL_error(L, "'register_action' needs between 3 and 4 arguments"));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007650
7651 /* First argument : converter name. */
7652 name = MAY_LJMP(luaL_checkstring(L, 1));
7653
7654 /* Second argument : environment. */
7655 if (lua_type(L, 2) != LUA_TTABLE)
7656 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7657
7658 /* Third argument : lua function. */
7659 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7660
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007661 /* Fourth argument : number of mandatory arguments expected on the configuration line. */
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007662 if (lua_gettop(L) >= 4)
7663 nargs = MAY_LJMP(luaL_checkinteger(L, 4));
7664
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007665 /* browse the second argument as an array. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007666 lua_pushnil(L);
7667 while (lua_next(L, 2) != 0) {
7668 if (lua_type(L, -1) != LUA_TSTRING)
7669 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7670
Thierry Fournierf67442e2020-11-28 20:41:07 +01007671 /* Check if action exists */
7672 trash = get_trash_chunk();
7673 chunk_printf(trash, "lua.%s", name);
7674 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0) {
7675 akw = tcp_req_cont_action(trash->area);
7676 } else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0) {
7677 akw = tcp_res_cont_action(trash->area);
7678 } else if (strcmp(lua_tostring(L, -1), "http-req") == 0) {
7679 akw = action_http_req_custom(trash->area);
7680 } else if (strcmp(lua_tostring(L, -1), "http-res") == 0) {
7681 akw = action_http_res_custom(trash->area);
7682 } else {
7683 akw = NULL;
7684 }
7685 if (akw != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01007686 fcn = akw->private;
7687 if (fcn->function_ref[hlua_state_id] != -1) {
7688 ha_warning("Trying to register action 'lua.%s' more than once. "
7689 "This will become a hard error in version 2.5.\n", name);
7690 }
7691 fcn->function_ref[hlua_state_id] = ref;
7692
7693 /* pop the environment string. */
7694 lua_pop(L, 1);
7695 continue;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007696 }
7697
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007698 /* Check required environment. Only accepted "http" or "tcp". */
7699 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007700 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007701 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007702 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01007703 fcn = new_hlua_function();
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007704 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007705 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007706
7707 /* Fill fcn. */
7708 fcn->name = strdup(name);
7709 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007710 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournierc7492592020-11-28 23:57:24 +01007711 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007712
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07007713 /* Set the expected number of arguments. */
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007714 fcn->nargs = nargs;
7715
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007716 /* List head */
7717 akl->list.n = akl->list.p = NULL;
7718
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007719 /* action keyword. */
7720 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007721 akl->kw[0].kw = calloc(1, len);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007722 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007723 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007724
7725 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7726
7727 akl->kw[0].match_pfx = 0;
7728 akl->kw[0].private = fcn;
7729 akl->kw[0].parse = action_register_lua;
7730
7731 /* select the action registering point. */
7732 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0)
7733 tcp_req_cont_keywords_register(akl);
7734 else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0)
7735 tcp_res_cont_keywords_register(akl);
7736 else if (strcmp(lua_tostring(L, -1), "http-req") == 0)
7737 http_req_keywords_register(akl);
7738 else if (strcmp(lua_tostring(L, -1), "http-res") == 0)
7739 http_res_keywords_register(akl);
7740 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007741 WILL_LJMP(luaL_error(L, "Lua action environment '%s' is unknown. "
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007742 "'tcp-req', 'tcp-res', 'http-req' or 'http-res' "
7743 "are expected.", lua_tostring(L, -1)));
7744
7745 /* pop the environment string. */
7746 lua_pop(L, 1);
7747 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007748 return ACT_RET_PRS_OK;
7749}
7750
7751static enum act_parse_ret action_register_service_tcp(const char **args, int *cur_arg, struct proxy *px,
7752 struct act_rule *rule, char **err)
7753{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007754 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007755
Christopher Faulet280f85b2019-07-15 15:02:04 +02007756 if (px->mode == PR_MODE_HTTP) {
7757 memprintf(err, "Lua TCP services cannot be used on HTTP proxies");
Christopher Fauletafd8f102018-11-08 11:34:21 +01007758 return ACT_RET_PRS_ERR;
7759 }
7760
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007761 /* Memory for the rule. */
7762 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7763 if (!rule->arg.hlua_rule) {
7764 memprintf(err, "out of memory error");
7765 return ACT_RET_PRS_ERR;
7766 }
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007767
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007768 /* Reference the Lua function and store the reference. */
Thierry Fournierad5345f2020-11-29 02:05:57 +01007769 rule->arg.hlua_rule->fcn = fcn;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007770
7771 /* TODO: later accept arguments. */
7772 rule->arg.hlua_rule->args = NULL;
7773
7774 /* Add applet pointer in the rule. */
7775 rule->applet.obj_type = OBJ_TYPE_APPLET;
7776 rule->applet.name = fcn->name;
7777 rule->applet.init = hlua_applet_tcp_init;
7778 rule->applet.fct = hlua_applet_tcp_fct;
7779 rule->applet.release = hlua_applet_tcp_release;
7780 rule->applet.timeout = hlua_timeout_applet;
7781
7782 return 0;
7783}
7784
7785/* This function is an LUA binding used for registering
7786 * "sample-conv" functions. It expects a converter name used
7787 * in the haproxy configuration file, and an LUA function.
7788 */
7789__LJMP static int hlua_register_service(lua_State *L)
7790{
7791 struct action_kw_list *akl;
7792 const char *name;
7793 const char *env;
7794 int ref;
7795 int len;
7796 struct hlua_function *fcn;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007797 struct buffer *trash;
7798 struct action_kw *akw;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007799
7800 MAY_LJMP(check_args(L, 3, "register_service"));
7801
7802 /* First argument : converter name. */
7803 name = MAY_LJMP(luaL_checkstring(L, 1));
7804
7805 /* Second argument : environment. */
7806 env = MAY_LJMP(luaL_checkstring(L, 2));
7807
7808 /* Third argument : lua function. */
7809 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7810
Thierry Fournierf67442e2020-11-28 20:41:07 +01007811 /* Check for service already registered */
7812 trash = get_trash_chunk();
7813 chunk_printf(trash, "lua.%s", name);
7814 akw = service_find(trash->area);
7815 if (akw != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01007816 fcn = akw->private;
7817 if (fcn->function_ref[hlua_state_id] != -1) {
7818 ha_warning("Trying to register service 'lua.%s' more than once. "
7819 "This will become a hard error in version 2.5.\n", name);
7820 }
7821 fcn->function_ref[hlua_state_id] = ref;
7822 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007823 }
7824
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007825 /* Allocate and fill the sample fetch keyword struct. */
7826 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
7827 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007828 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01007829 fcn = new_hlua_function();
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007830 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007831 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007832
7833 /* Fill fcn. */
7834 len = strlen("<lua.>") + strlen(name) + 1;
7835 fcn->name = calloc(1, len);
7836 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007837 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007838 snprintf((char *)fcn->name, len, "<lua.%s>", name);
Thierry Fournierc7492592020-11-28 23:57:24 +01007839 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007840
7841 /* List head */
7842 akl->list.n = akl->list.p = NULL;
7843
7844 /* converter keyword. */
7845 len = strlen("lua.") + strlen(name) + 1;
7846 akl->kw[0].kw = calloc(1, len);
7847 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007848 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007849
7850 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7851
Thierry FOURNIER / OZON.IO02564fd2016-11-12 11:07:05 +01007852 /* Check required environment. Only accepted "http" or "tcp". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007853 if (strcmp(env, "tcp") == 0)
7854 akl->kw[0].parse = action_register_service_tcp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007855 else if (strcmp(env, "http") == 0)
7856 akl->kw[0].parse = action_register_service_http;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007857 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007858 WILL_LJMP(luaL_error(L, "Lua service environment '%s' is unknown. "
Eric Salamafe7456f2017-12-21 14:30:07 +01007859 "'tcp' or 'http' are expected.", env));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007860
7861 akl->kw[0].match_pfx = 0;
7862 akl->kw[0].private = fcn;
7863
7864 /* End of array. */
7865 memset(&akl->kw[1], 0, sizeof(*akl->kw));
7866
7867 /* Register this new converter */
7868 service_keywords_register(akl);
7869
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007870 return 0;
7871}
7872
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007873/* This function initialises Lua cli handler. It copies the
7874 * arguments in the Lua stack and create channel IO objects.
7875 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02007876static int hlua_cli_parse_fct(char **args, char *payload, struct appctx *appctx, void *private)
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007877{
7878 struct hlua *hlua;
7879 struct hlua_function *fcn;
7880 int i;
7881 const char *error;
7882
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007883 fcn = private;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007884 appctx->ctx.hlua_cli.fcn = private;
7885
Willy Tarreaubafbe012017-11-24 17:34:44 +01007886 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007887 if (!hlua) {
7888 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007889 return 1;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007890 }
7891 HLUA_INIT(hlua);
7892 appctx->ctx.hlua_cli.hlua = hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007893
7894 /* Create task used by signal to wakeup applets.
Ilya Shipitsind4259502020-04-08 01:07:56 +05007895 * We use the same wakeup function than the Lua applet_tcp and
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007896 * applet_http. It is absolutely compatible.
7897 */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007898 appctx->ctx.hlua_cli.task = task_new(tid_bit);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007899 if (!appctx->ctx.hlua_cli.task) {
Thierry FOURNIERffbf5692016-12-16 11:14:06 +01007900 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007901 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007902 }
7903 appctx->ctx.hlua_cli.task->nice = 0;
7904 appctx->ctx.hlua_cli.task->context = appctx;
7905 appctx->ctx.hlua_cli.task->process = hlua_applet_wakeup;
7906
7907 /* Initialises the Lua context */
Thierry Fournierc7492592020-11-28 23:57:24 +01007908 if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(fcn), appctx->ctx.hlua_cli.task, 0)) {
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007909 SEND_ERR(NULL, "Lua cli '%s': can't initialize Lua context.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007910 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007911 }
7912
7913 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007914 if (!SET_SAFE_LJMP(hlua)) {
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007915 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7916 error = lua_tostring(hlua->T, -1);
7917 else
7918 error = "critical error";
7919 SEND_ERR(NULL, "Lua cli '%s': %s.\n", fcn->name, error);
7920 goto error;
7921 }
7922
7923 /* Check stack available size. */
7924 if (!lua_checkstack(hlua->T, 2)) {
7925 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7926 goto error;
7927 }
7928
7929 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01007930 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, fcn->function_ref[hlua->state_id]);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007931
7932 /* Once the arguments parsed, the CLI is like an AppletTCP,
7933 * so push AppletTCP in the stack.
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007934 */
7935 if (!hlua_applet_tcp_new(hlua->T, appctx)) {
7936 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7937 goto error;
7938 }
7939 hlua->nargs = 1;
7940
7941 /* push keywords in the stack. */
7942 for (i = 0; *args[i]; i++) {
7943 /* Check stack available size. */
7944 if (!lua_checkstack(hlua->T, 1)) {
7945 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7946 goto error;
7947 }
7948 lua_pushstring(hlua->T, args[i]);
7949 hlua->nargs++;
7950 }
7951
7952 /* We must initialize the execution timeouts. */
7953 hlua->max_time = hlua_timeout_session;
7954
7955 /* At this point the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007956 RESET_SAFE_LJMP(hlua);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007957
7958 /* It's ok */
7959 return 0;
7960
7961 /* It's not ok. */
7962error:
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007963 RESET_SAFE_LJMP(hlua);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007964 hlua_ctx_destroy(hlua);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007965 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007966 return 1;
7967}
7968
7969static int hlua_cli_io_handler_fct(struct appctx *appctx)
7970{
7971 struct hlua *hlua;
7972 struct stream_interface *si;
7973 struct hlua_function *fcn;
7974
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007975 hlua = appctx->ctx.hlua_cli.hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007976 si = appctx->owner;
Willy Tarreau8ae4f752016-12-14 15:41:45 +01007977 fcn = appctx->ctx.hlua_cli.fcn;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007978
7979 /* If the stream is disconnect or closed, ldo nothing. */
7980 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7981 return 1;
7982
7983 /* Execute the function. */
7984 switch (hlua_ctx_resume(hlua, 1)) {
7985
7986 /* finished. */
7987 case HLUA_E_OK:
7988 return 1;
7989
7990 /* yield. */
7991 case HLUA_E_AGAIN:
7992 /* We want write. */
7993 if (HLUA_IS_WAKERESWR(hlua))
Willy Tarreaudb398432018-11-15 11:08:52 +01007994 si_rx_room_blk(si);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007995 /* Set the timeout. */
7996 if (hlua->wake_time != TICK_ETERNITY)
7997 task_schedule(hlua->task, hlua->wake_time);
7998 return 0;
7999
8000 /* finished with error. */
8001 case HLUA_E_ERRMSG:
8002 /* Display log. */
8003 SEND_ERR(NULL, "Lua cli '%s': %s.\n",
8004 fcn->name, lua_tostring(hlua->T, -1));
8005 lua_pop(hlua->T, 1);
8006 return 1;
8007
Thierry Fournierd5b073c2018-05-21 19:42:47 +02008008 case HLUA_E_ETMOUT:
8009 SEND_ERR(NULL, "Lua converter '%s': execution timeout.\n",
8010 fcn->name);
8011 return 1;
8012
8013 case HLUA_E_NOMEM:
8014 SEND_ERR(NULL, "Lua converter '%s': out of memory error.\n",
8015 fcn->name);
8016 return 1;
8017
8018 case HLUA_E_YIELD: /* unexpected */
8019 SEND_ERR(NULL, "Lua converter '%s': yield not allowed.\n",
8020 fcn->name);
8021 return 1;
8022
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008023 case HLUA_E_ERR:
8024 /* Display log. */
8025 SEND_ERR(NULL, "Lua cli '%s' return an unknown error.\n",
8026 fcn->name);
8027 return 1;
8028
8029 default:
8030 return 1;
8031 }
8032
8033 return 1;
8034}
8035
8036static void hlua_cli_io_release_fct(struct appctx *appctx)
8037{
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01008038 hlua_ctx_destroy(appctx->ctx.hlua_cli.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01008039 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008040}
8041
8042/* This function is an LUA binding used for registering
8043 * new keywords in the cli. It expects a list of keywords
8044 * which are the "path". It is limited to 5 keywords. A
8045 * description of the command, a function to be executed
8046 * for the parsing and a function for io handlers.
8047 */
8048__LJMP static int hlua_register_cli(lua_State *L)
8049{
8050 struct cli_kw_list *cli_kws;
8051 const char *message;
8052 int ref_io;
8053 int len;
8054 struct hlua_function *fcn;
8055 int index;
8056 int i;
Thierry Fournierf67442e2020-11-28 20:41:07 +01008057 struct buffer *trash;
8058 const char *kw[5];
8059 struct cli_kw *cli_kw;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008060
8061 MAY_LJMP(check_args(L, 3, "register_cli"));
8062
8063 /* First argument : an array of maximum 5 keywords. */
8064 if (!lua_istable(L, 1))
8065 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table"));
8066
8067 /* Second argument : string with contextual message. */
8068 message = MAY_LJMP(luaL_checkstring(L, 2));
8069
8070 /* Third and fourth argument : lua function. */
8071 ref_io = MAY_LJMP(hlua_checkfunction(L, 3));
8072
Thierry Fournierf67442e2020-11-28 20:41:07 +01008073 /* Check for CLI service already registered */
8074 trash = get_trash_chunk();
8075 index = 0;
8076 lua_pushnil(L);
8077 memset(kw, 0, sizeof(kw));
8078 while (lua_next(L, 1) != 0) {
8079 if (index >= CLI_PREFIX_KW_NB)
8080 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
8081 if (lua_type(L, -1) != LUA_TSTRING)
8082 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
8083 kw[index] = lua_tostring(L, -1);
8084 if (index == 0)
8085 chunk_printf(trash, "%s", kw[index]);
8086 else
8087 chunk_appendf(trash, " %s", kw[index]);
8088 index++;
8089 lua_pop(L, 1);
8090 }
8091 cli_kw = cli_find_kw_exact((char **)kw);
8092 if (cli_kw != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01008093 fcn = cli_kw->private;
8094 if (fcn->function_ref[hlua_state_id] != -1) {
8095 ha_warning("Trying to register CLI keyword 'lua.%s' more than once. "
8096 "This will become a hard error in version 2.5.\n", trash->area);
8097 }
8098 fcn->function_ref[hlua_state_id] = ref_io;
8099 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01008100 }
8101
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008102 /* Allocate and fill the sample fetch keyword struct. */
8103 cli_kws = calloc(1, sizeof(*cli_kws) + sizeof(struct cli_kw) * 2);
8104 if (!cli_kws)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008105 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01008106 fcn = new_hlua_function();
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008107 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008108 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008109
8110 /* Fill path. */
8111 index = 0;
8112 lua_pushnil(L);
8113 while(lua_next(L, 1) != 0) {
8114 if (index >= 5)
8115 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
8116 if (lua_type(L, -1) != LUA_TSTRING)
8117 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
8118 cli_kws->kw[0].str_kw[index] = strdup(lua_tostring(L, -1));
8119 if (!cli_kws->kw[0].str_kw[index])
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008120 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008121 index++;
8122 lua_pop(L, 1);
8123 }
8124
8125 /* Copy help message. */
8126 cli_kws->kw[0].usage = strdup(message);
8127 if (!cli_kws->kw[0].usage)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008128 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008129
8130 /* Fill fcn io handler. */
8131 len = strlen("<lua.cli>") + 1;
8132 for (i = 0; i < index; i++)
8133 len += strlen(cli_kws->kw[0].str_kw[i]) + 1;
8134 fcn->name = calloc(1, len);
8135 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008136 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008137 strncat((char *)fcn->name, "<lua.cli", len);
8138 for (i = 0; i < index; i++) {
8139 strncat((char *)fcn->name, ".", len);
8140 strncat((char *)fcn->name, cli_kws->kw[0].str_kw[i], len);
8141 }
8142 strncat((char *)fcn->name, ">", len);
Thierry Fournierc7492592020-11-28 23:57:24 +01008143 fcn->function_ref[hlua_state_id] = ref_io;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008144
8145 /* Fill last entries. */
8146 cli_kws->kw[0].private = fcn;
8147 cli_kws->kw[0].parse = hlua_cli_parse_fct;
8148 cli_kws->kw[0].io_handler = hlua_cli_io_handler_fct;
8149 cli_kws->kw[0].io_release = hlua_cli_io_release_fct;
8150
8151 /* Register this new converter */
8152 cli_register_kw(cli_kws);
8153
8154 return 0;
8155}
8156
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008157static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008158 const struct proxy *defpx, const char *file, int line,
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008159 char **err, unsigned int *timeout)
8160{
8161 const char *error;
8162
8163 error = parse_time_err(args[1], timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02008164 if (error == PARSE_TIME_OVER) {
8165 memprintf(err, "timer overflow in argument <%s> to <%s> (maximum value is 2147483647 ms or ~24.8 days)",
8166 args[1], args[0]);
8167 return -1;
8168 }
8169 else if (error == PARSE_TIME_UNDER) {
8170 memprintf(err, "timer underflow in argument <%s> to <%s> (minimum non-null value is 1 ms)",
8171 args[1], args[0]);
8172 return -1;
8173 }
8174 else if (error) {
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008175 memprintf(err, "%s: invalid timeout", args[0]);
8176 return -1;
8177 }
8178 return 0;
8179}
8180
8181static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008182 const struct proxy *defpx, const char *file, int line,
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008183 char **err)
8184{
8185 return hlua_read_timeout(args, section_type, curpx, defpx,
8186 file, line, err, &hlua_timeout_session);
8187}
8188
8189static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008190 const struct proxy *defpx, const char *file, int line,
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008191 char **err)
8192{
8193 return hlua_read_timeout(args, section_type, curpx, defpx,
8194 file, line, err, &hlua_timeout_task);
8195}
8196
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008197static int hlua_applet_timeout(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008198 const struct proxy *defpx, const char *file, int line,
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008199 char **err)
8200{
8201 return hlua_read_timeout(args, section_type, curpx, defpx,
8202 file, line, err, &hlua_timeout_applet);
8203}
8204
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008205static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008206 const struct proxy *defpx, const char *file, int line,
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008207 char **err)
8208{
8209 char *error;
8210
8211 hlua_nb_instruction = strtoll(args[1], &error, 10);
8212 if (*error != '\0') {
8213 memprintf(err, "%s: invalid number", args[0]);
8214 return -1;
8215 }
8216 return 0;
8217}
8218
Willy Tarreau32f61e22015-03-18 17:54:59 +01008219static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008220 const struct proxy *defpx, const char *file, int line,
Willy Tarreau32f61e22015-03-18 17:54:59 +01008221 char **err)
8222{
8223 char *error;
8224
8225 if (*(args[1]) == 0) {
8226 memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]);
8227 return -1;
8228 }
8229 hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L;
8230 if (*error != '\0') {
8231 memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error);
8232 return -1;
8233 }
8234 return 0;
8235}
8236
8237
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008238/* This function is called by the main configuration key "lua-load". It loads and
8239 * execute an lua file during the parsing of the HAProxy configuration file. It is
8240 * the main lua entry point.
8241 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008242 * This function runs with the HAProxy keywords API. It returns -1 if an error
8243 * occurs, otherwise it returns 0.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008244 *
8245 * In some error case, LUA set an error message in top of the stack. This function
8246 * returns this error message in the HAProxy logs and pop it from the stack.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008247 *
8248 * This function can fail with an abort() due to an Lua critical error.
8249 * We are in the configuration parsing process of HAProxy, this abort() is
8250 * tolerated.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008251 */
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008252static int hlua_load_state(char *filename, lua_State *L, char **err)
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008253{
8254 int error;
8255
8256 /* Just load and compile the file. */
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008257 error = luaL_loadfile(L, filename);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008258 if (error) {
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008259 memprintf(err, "error in Lua file '%s': %s", filename, lua_tostring(L, -1));
8260 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008261 return -1;
8262 }
8263
8264 /* If no syntax error where detected, execute the code. */
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008265 error = lua_pcall(L, 0, LUA_MULTRET, 0);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008266 switch (error) {
8267 case LUA_OK:
8268 break;
8269 case LUA_ERRRUN:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008270 memprintf(err, "Lua runtime error: %s\n", lua_tostring(L, -1));
8271 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008272 return -1;
8273 case LUA_ERRMEM:
Thierry Fournierde6145f2020-11-29 00:55:53 +01008274 memprintf(err, "Lua out of memory error\n");
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008275 return -1;
8276 case LUA_ERRERR:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008277 memprintf(err, "Lua message handler error: %s\n", lua_tostring(L, -1));
8278 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008279 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008280#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM <= 503
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008281 case LUA_ERRGCMM:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008282 memprintf(err, "Lua garbage collector error: %s\n", lua_tostring(L, -1));
8283 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008284 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008285#endif
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008286 default:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008287 memprintf(err, "Lua unknown error: %s\n", lua_tostring(L, -1));
8288 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008289 return -1;
8290 }
8291
8292 return 0;
8293}
8294
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008295static int hlua_load(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008296 const struct proxy *defpx, const char *file, int line,
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008297 char **err)
8298{
8299 if (*(args[1]) == 0) {
8300 memprintf(err, "'%s' expects a file name as parameter.\n", args[0]);
8301 return -1;
8302 }
8303
Thierry Fournier59f11be2020-11-29 00:37:41 +01008304 /* loading for global state */
Thierry Fournierc7492592020-11-28 23:57:24 +01008305 hlua_state_id = 0;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008306 ha_set_tid(0);
Thierry Fournierafc63e22020-11-28 17:06:51 +01008307 return hlua_load_state(args[1], hlua_states[0], err);
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008308}
8309
Thierry Fournier59f11be2020-11-29 00:37:41 +01008310static int hlua_load_per_thread(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008311 const struct proxy *defpx, const char *file, int line,
Thierry Fournier59f11be2020-11-29 00:37:41 +01008312 char **err)
8313{
8314 int len;
8315
8316 if (*(args[1]) == 0) {
8317 memprintf(err, "'%s' expects a file as parameter.\n", args[0]);
8318 return -1;
8319 }
8320
8321 if (per_thread_load == NULL) {
8322 /* allocate the first entry large enough to store the final NULL */
8323 per_thread_load = calloc(1, sizeof(*per_thread_load));
8324 if (per_thread_load == NULL) {
8325 memprintf(err, "out of memory error");
8326 return -1;
8327 }
8328 }
8329
8330 /* count used entries */
8331 for (len = 0; per_thread_load[len] != NULL; len++)
8332 ;
8333
8334 per_thread_load = realloc(per_thread_load, (len + 2) * sizeof(*per_thread_load));
8335 if (per_thread_load == NULL) {
8336 memprintf(err, "out of memory error");
8337 return -1;
8338 }
8339
8340 per_thread_load[len] = strdup(args[1]);
8341 per_thread_load[len + 1] = NULL;
8342
8343 if (per_thread_load[len] == NULL) {
8344 memprintf(err, "out of memory error");
8345 return -1;
8346 }
8347
8348 /* loading for thread 1 only */
8349 hlua_state_id = 1;
8350 ha_set_tid(0);
8351 return hlua_load_state(args[1], hlua_states[1], err);
8352}
8353
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008354/* Prepend the given <path> followed by a semicolon to the `package.<type>` variable
8355 * in the given <ctx>.
8356 */
Thierry Fournier3fb9e512020-11-28 10:13:12 +01008357static int hlua_prepend_path(lua_State *L, char *type, char *path)
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008358{
Thierry Fournier3fb9e512020-11-28 10:13:12 +01008359 lua_getglobal(L, "package"); /* push package variable */
8360 lua_pushstring(L, path); /* push given path */
8361 lua_pushstring(L, ";"); /* push semicolon */
8362 lua_getfield(L, -3, type); /* push old path */
8363 lua_concat(L, 3); /* concatenate to new path */
8364 lua_setfield(L, -2, type); /* store new path */
8365 lua_pop(L, 1); /* pop package variable */
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008366
8367 return 0;
8368}
8369
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008370static int hlua_config_prepend_path(char **args, int section_type, struct proxy *curpx,
Willy Tarreau01825162021-03-09 09:53:46 +01008371 const struct proxy *defpx, const char *file, int line,
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008372 char **err)
8373{
8374 char *path;
8375 char *type = "path";
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008376 struct prepend_path *p = NULL;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008377
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008378 if (too_many_args(2, args, err, NULL)) {
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008379 goto err;
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008380 }
8381
8382 if (!(*args[1])) {
8383 memprintf(err, "'%s' expects to receive a <path> as argument", args[0]);
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008384 goto err;
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008385 }
8386 path = args[1];
8387
8388 if (*args[2]) {
8389 if (strcmp(args[2], "path") != 0 && strcmp(args[2], "cpath") != 0) {
8390 memprintf(err, "'%s' expects <type> to either be 'path' or 'cpath'", args[0]);
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008391 goto err;
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008392 }
8393 type = args[2];
8394 }
8395
Thierry Fournier59f11be2020-11-29 00:37:41 +01008396 p = calloc(1, sizeof(*p));
8397 if (p == NULL) {
Tim Duesterhusf89d43a2021-01-03 20:04:37 +01008398 memprintf(err, "memory allocation failed");
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008399 goto err;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008400 }
8401 p->path = strdup(path);
8402 if (p->path == NULL) {
Tim Duesterhusf89d43a2021-01-03 20:04:37 +01008403 memprintf(err, "memory allocation failed");
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008404 goto err2;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008405 }
8406 p->type = strdup(type);
8407 if (p->type == NULL) {
Tim Duesterhusf89d43a2021-01-03 20:04:37 +01008408 memprintf(err, "memory allocation failed");
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008409 goto err2;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008410 }
8411 LIST_ADDQ(&prepend_path_list, &p->l);
8412
8413 hlua_prepend_path(hlua_states[0], type, path);
8414 hlua_prepend_path(hlua_states[1], type, path);
8415 return 0;
Tim Duesterhus621e74a2021-01-03 20:04:36 +01008416
8417err2:
8418 free(p->type);
8419 free(p->path);
8420err:
8421 free(p);
8422 return -1;
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008423}
8424
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008425/* configuration keywords declaration */
8426static struct cfg_kw_list cfg_kws = {{ },{
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008427 { CFG_GLOBAL, "lua-prepend-path", hlua_config_prepend_path },
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008428 { CFG_GLOBAL, "lua-load", hlua_load },
Thierry Fournier59f11be2020-11-29 00:37:41 +01008429 { CFG_GLOBAL, "lua-load-per-thread", hlua_load_per_thread },
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008430 { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout },
8431 { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout },
Thierry FOURNIER56da1012015-10-01 08:42:31 +02008432 { CFG_GLOBAL, "tune.lua.service-timeout", hlua_applet_timeout },
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008433 { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield },
Willy Tarreau32f61e22015-03-18 17:54:59 +01008434 { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem },
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008435 { 0, NULL, NULL },
8436}};
8437
Willy Tarreau0108d902018-11-25 19:14:37 +01008438INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
8439
Christopher Fauletafd8f102018-11-08 11:34:21 +01008440
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008441/* This function can fail with an abort() due to an Lua critical error.
8442 * We are in the initialisation process of HAProxy, this abort() is
8443 * tolerated.
8444 */
Thierry Fournierb8cef172020-11-28 15:37:17 +01008445int hlua_post_init_state(lua_State *L)
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008446{
8447 struct hlua_init_function *init;
8448 const char *msg;
8449 enum hlua_exec ret;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008450 const char *error;
Thierry Fournier670db242020-11-28 10:49:59 +01008451 const char *kind;
8452 const char *trace;
8453 int return_status = 1;
8454#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
8455 int nres;
8456#endif
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008457
Willy Tarreaucdb53462020-12-02 12:12:00 +01008458 /* disable memory limit checks if limit is not set */
8459 if (!hlua_global_allocator.limit)
8460 hlua_global_allocator.limit = ~hlua_global_allocator.limit;
8461
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05008462 /* Call post initialisation function in safe environment. */
Thierry Fournier3c539322020-11-28 16:05:05 +01008463 if (setjmp(safe_ljmp_env) != 0) {
8464 lua_atpanic(L, hlua_panic_safe);
Thierry Fournierb8cef172020-11-28 15:37:17 +01008465 if (lua_type(L, -1) == LUA_TSTRING)
8466 error = lua_tostring(L, -1);
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008467 else
8468 error = "critical error";
8469 fprintf(stderr, "Lua post-init: %s.\n", error);
8470 exit(1);
Thierry Fournier3c539322020-11-28 16:05:05 +01008471 } else {
8472 lua_atpanic(L, hlua_panic_ljmp);
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008473 }
Frédéric Lécaille54f2bcf2018-08-29 13:46:24 +02008474
Thierry Fournierb8cef172020-11-28 15:37:17 +01008475 hlua_fcn_post_init(L);
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008476
Thierry Fournierc7492592020-11-28 23:57:24 +01008477 list_for_each_entry(init, &hlua_init_functions[hlua_state_id], l) {
Thierry Fournierb8cef172020-11-28 15:37:17 +01008478 lua_rawgeti(L, LUA_REGISTRYINDEX, init->function_ref);
Thierry Fournier670db242020-11-28 10:49:59 +01008479
8480#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
Thierry Fournierb8cef172020-11-28 15:37:17 +01008481 ret = lua_resume(L, L, 0, &nres);
Thierry Fournier670db242020-11-28 10:49:59 +01008482#else
Thierry Fournierb8cef172020-11-28 15:37:17 +01008483 ret = lua_resume(L, L, 0);
Thierry Fournier670db242020-11-28 10:49:59 +01008484#endif
8485 kind = NULL;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008486 switch (ret) {
Thierry Fournier670db242020-11-28 10:49:59 +01008487
8488 case LUA_OK:
Thierry Fournierb8cef172020-11-28 15:37:17 +01008489 lua_pop(L, -1);
Thierry Fournier13d08b72020-11-28 11:02:58 +01008490 break;
Thierry Fournier670db242020-11-28 10:49:59 +01008491
8492 case LUA_ERRERR:
8493 kind = "message handler error";
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07008494 /* Fall through */
Thierry Fournier670db242020-11-28 10:49:59 +01008495 case LUA_ERRRUN:
8496 if (!kind)
8497 kind = "runtime error";
Thierry Fournierb8cef172020-11-28 15:37:17 +01008498 msg = lua_tostring(L, -1);
8499 lua_settop(L, 0); /* Empty the stack. */
8500 lua_pop(L, 1);
Christopher Fauletd09cc512021-03-24 14:48:45 +01008501 trace = hlua_traceback(L, ", ");
Thierry Fournier670db242020-11-28 10:49:59 +01008502 if (msg)
8503 ha_alert("Lua init: %s: '%s' from %s\n", kind, msg, trace);
8504 else
8505 ha_alert("Lua init: unknown %s from %s\n", kind, trace);
8506 return_status = 0;
8507 break;
8508
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008509 default:
Thierry Fournier670db242020-11-28 10:49:59 +01008510 /* Unknown error */
8511 kind = "Unknown error";
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07008512 /* Fall through */
Thierry Fournier670db242020-11-28 10:49:59 +01008513 case LUA_YIELD:
8514 /* yield is not configured at this step, this state doesn't happen */
8515 if (!kind)
8516 kind = "yield not allowed";
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07008517 /* Fall through */
Thierry Fournier670db242020-11-28 10:49:59 +01008518 case LUA_ERRMEM:
8519 if (!kind)
8520 kind = "out of memory error";
Thierry Fournierb8cef172020-11-28 15:37:17 +01008521 lua_settop(L, 0);
8522 lua_pop(L, 1);
Christopher Fauletd09cc512021-03-24 14:48:45 +01008523 trace = hlua_traceback(L, ", ");
Thierry Fournier670db242020-11-28 10:49:59 +01008524 ha_alert("Lua init: %s: %s\n", kind, trace);
8525 return_status = 0;
8526 break;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008527 }
Thierry Fournier670db242020-11-28 10:49:59 +01008528 if (!return_status)
8529 break;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008530 }
Thierry Fournier3c539322020-11-28 16:05:05 +01008531
8532 lua_atpanic(L, hlua_panic_safe);
Thierry Fournier670db242020-11-28 10:49:59 +01008533 return return_status;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008534}
8535
Thierry Fournierb8cef172020-11-28 15:37:17 +01008536int hlua_post_init()
8537{
Thierry Fournier59f11be2020-11-29 00:37:41 +01008538 int ret;
8539 int i;
8540 int errors;
8541 char *err = NULL;
8542 struct hlua_function *fcn;
8543
Thierry Fournierb8cef172020-11-28 15:37:17 +01008544#if USE_OPENSSL
8545 /* Initialize SSL server. */
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01008546 if (socket_ssl->xprt->prepare_srv) {
Thierry Fournierb8cef172020-11-28 15:37:17 +01008547 int saved_used_backed = global.ssl_used_backend;
8548 // don't affect maxconn automatic computation
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01008549 socket_ssl->xprt->prepare_srv(socket_ssl);
Thierry Fournierb8cef172020-11-28 15:37:17 +01008550 global.ssl_used_backend = saved_used_backed;
8551 }
8552#endif
8553
Thierry Fournierc7492592020-11-28 23:57:24 +01008554 /* Perform post init of common thread */
8555 hlua_state_id = 0;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008556 ha_set_tid(0);
8557 ret = hlua_post_init_state(hlua_states[hlua_state_id]);
8558 if (ret == 0)
8559 return 0;
8560
8561 /* init remaining lua states and load files */
8562 for (hlua_state_id = 2; hlua_state_id < global.nbthread + 1; hlua_state_id++) {
8563
8564 /* set thread context */
8565 ha_set_tid(hlua_state_id - 1);
8566
8567 /* Init lua state */
8568 hlua_states[hlua_state_id] = hlua_init_state(hlua_state_id);
8569
8570 /* Load lua files */
8571 for (i = 0; per_thread_load && per_thread_load[i]; i++) {
8572 ret = hlua_load_state(per_thread_load[i], hlua_states[hlua_state_id], &err);
8573 if (ret != 0) {
8574 ha_alert("Lua init: %s\n", err);
8575 return 0;
8576 }
8577 }
8578 }
8579
8580 /* Reset thread context */
8581 ha_set_tid(0);
8582
8583 /* Execute post init for all states */
8584 for (hlua_state_id = 1; hlua_state_id < global.nbthread + 1; hlua_state_id++) {
8585
8586 /* set thread context */
8587 ha_set_tid(hlua_state_id - 1);
8588
8589 /* run post init */
8590 ret = hlua_post_init_state(hlua_states[hlua_state_id]);
8591 if (ret == 0)
8592 return 0;
8593 }
8594
8595 /* Reset thread context */
8596 ha_set_tid(0);
8597
8598 /* control functions registering. Each function must have:
8599 * - only the function_ref[0] set positive and all other to -1
8600 * - only the function_ref[0] set to -1 and all other positive
8601 * This ensure a same reference is not used both in shared
8602 * lua state and thread dedicated lua state. Note: is the case
Ilya Shipitsinb8888ab2021-01-06 21:20:16 +05008603 * reach, the shared state is priority, but the bug will be
Thierry Fournier59f11be2020-11-29 00:37:41 +01008604 * complicated to found for the end user.
8605 */
8606 errors = 0;
8607 list_for_each_entry(fcn, &referenced_functions, l) {
8608 ret = 0;
8609 for (i = 1; i < global.nbthread + 1; i++) {
8610 if (fcn->function_ref[i] == -1)
8611 ret--;
8612 else
8613 ret++;
8614 }
8615 if (abs(ret) != global.nbthread) {
8616 ha_alert("Lua function '%s' is not referenced in all thread. "
8617 "Expect function in all thread or in none thread.\n", fcn->name);
8618 errors++;
8619 continue;
8620 }
8621
8622 if ((fcn->function_ref[0] == -1) == (ret < 0)) {
Ilya Shipitsinb8888ab2021-01-06 21:20:16 +05008623 ha_alert("Lua function '%s' is referenced both ins shared Lua context (through lua-load) "
8624 "and per-thread Lua context (through lua-load-per-thread). these two context "
Thierry Fournier59f11be2020-11-29 00:37:41 +01008625 "exclusive.\n", fcn->name);
8626 errors++;
8627 }
8628 }
8629
8630 if (errors > 0)
8631 return 0;
8632
Ilya Shipitsinb8888ab2021-01-06 21:20:16 +05008633 /* after this point, this global will no longer be used, so set to
Thierry Fournier59f11be2020-11-29 00:37:41 +01008634 * -1 in order to have probably a segfault if someone use it
8635 */
8636 hlua_state_id = -1;
8637
8638 return 1;
Thierry Fournierb8cef172020-11-28 15:37:17 +01008639}
8640
Willy Tarreau32f61e22015-03-18 17:54:59 +01008641/* The memory allocator used by the Lua stack. <ud> is a pointer to the
8642 * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize>
8643 * is the previously allocated size or the kind of object in case of a new
Willy Tarreaud36c7fa2020-12-02 12:26:29 +01008644 * allocation. <nsize> is the requested new size. A new allocation is
8645 * indicated by <ptr> being NULL. A free is indicated by <nsize> being
Willy Tarreaucdb53462020-12-02 12:12:00 +01008646 * zero. This one verifies that the limits are respected but is optimized
8647 * for the fast case where limits are not used, hence stats are not updated.
Willy Tarreau32f61e22015-03-18 17:54:59 +01008648 */
8649static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
8650{
8651 struct hlua_mem_allocator *zone = ud;
Willy Tarreaucdb53462020-12-02 12:12:00 +01008652 size_t limit, old, new;
8653
Tim Duesterhus22586522021-01-08 10:35:33 +01008654 if (unlikely(!ptr && !nsize))
8655 return NULL;
8656
Willy Tarreaucdb53462020-12-02 12:12:00 +01008657 /* a limit of ~0 means unlimited and boot complete, so there's no need
8658 * for accounting anymore.
8659 */
Christopher Fauletcc2c4f82021-03-24 14:52:24 +01008660 if (likely(~zone->limit == 0))
8661 return realloc(ptr, nsize);
Willy Tarreau32f61e22015-03-18 17:54:59 +01008662
Willy Tarreaud36c7fa2020-12-02 12:26:29 +01008663 if (!ptr)
8664 osize = 0;
Willy Tarreau32f61e22015-03-18 17:54:59 +01008665
Willy Tarreaucdb53462020-12-02 12:12:00 +01008666 /* enforce strict limits across all threads */
8667 limit = zone->limit;
8668 old = _HA_ATOMIC_LOAD(&zone->allocated);
8669 do {
8670 new = old + nsize - osize;
8671 if (unlikely(nsize && limit && new > limit))
8672 return NULL;
8673 } while (!_HA_ATOMIC_CAS(&zone->allocated, &old, new));
Willy Tarreau32f61e22015-03-18 17:54:59 +01008674
8675 ptr = realloc(ptr, nsize);
Willy Tarreaucdb53462020-12-02 12:12:00 +01008676
8677 if (unlikely(!ptr && nsize)) // failed
8678 _HA_ATOMIC_SUB(&zone->allocated, nsize - osize);
8679
8680 __ha_barrier_atomic_store();
Willy Tarreau32f61e22015-03-18 17:54:59 +01008681 return ptr;
8682}
8683
Thierry Fournierecb83c22020-11-28 15:49:44 +01008684/* This function can fail with an abort() due to a Lua critical error.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008685 * We are in the initialisation process of HAProxy, this abort() is
8686 * tolerated.
8687 */
Thierry Fournierecb83c22020-11-28 15:49:44 +01008688lua_State *hlua_init_state(int thread_num)
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008689{
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008690 int i;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008691 int idx;
8692 struct sample_fetch *sf;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008693 struct sample_conv *sc;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008694 char *p;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008695 const char *error_msg;
Thierry Fournier4234dbd2020-11-28 13:18:23 +01008696 void **context;
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008697 lua_State *L;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008698 struct prepend_path *pp;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008699
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008700 /* Init main lua stack. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008701 L = lua_newstate(hlua_alloc, &hlua_global_allocator);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008702
Thierry Fournier4234dbd2020-11-28 13:18:23 +01008703 /* Initialise Lua context to NULL */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008704 context = lua_getextraspace(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01008705 *context = NULL;
8706
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008707 /* From this point, until the end of the initialisation function,
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008708 * the Lua function can fail with an abort. We are in the initialisation
8709 * process of HAProxy, this abort() is tolerated.
8710 */
8711
Thierry Fournier3c539322020-11-28 16:05:05 +01008712 /* Call post initialisation function in safe environment. */
8713 if (setjmp(safe_ljmp_env) != 0) {
8714 lua_atpanic(L, hlua_panic_safe);
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008715 if (lua_type(L, -1) == LUA_TSTRING)
8716 error_msg = lua_tostring(L, -1);
Thierry Fournier2f05cc62020-11-28 16:08:02 +01008717 else
8718 error_msg = "critical error";
8719 fprintf(stderr, "Lua init: %s.\n", error_msg);
8720 exit(1);
Thierry Fournier3c539322020-11-28 16:05:05 +01008721 } else {
8722 lua_atpanic(L, hlua_panic_ljmp);
Thierry Fournier2f05cc62020-11-28 16:08:02 +01008723 }
8724
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008725 /* Initialise lua. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008726 luaL_openlibs(L);
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008727#define HLUA_PREPEND_PATH_TOSTRING1(x) #x
8728#define HLUA_PREPEND_PATH_TOSTRING(x) HLUA_PREPEND_PATH_TOSTRING1(x)
8729#ifdef HLUA_PREPEND_PATH
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008730 hlua_prepend_path(L, "path", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_PATH));
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008731#endif
8732#ifdef HLUA_PREPEND_CPATH
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008733 hlua_prepend_path(L, "cpath", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_CPATH));
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008734#endif
8735#undef HLUA_PREPEND_PATH_TOSTRING
8736#undef HLUA_PREPEND_PATH_TOSTRING1
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008737
Thierry Fournier59f11be2020-11-29 00:37:41 +01008738 /* Apply configured prepend path */
8739 list_for_each_entry(pp, &prepend_path_list, l)
8740 hlua_prepend_path(L, pp->type, pp->path);
8741
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008742 /*
8743 *
8744 * Create "core" object.
8745 *
8746 */
8747
Thierry FOURNIERa2d8c652015-03-11 17:29:39 +01008748 /* This table entry is the object "core" base. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008749 lua_newtable(L);
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008750
Thierry Fournierecb83c22020-11-28 15:49:44 +01008751 /* set the thread id */
8752 hlua_class_const_int(L, "thread", thread_num);
8753
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008754 /* Push the loglevel constants. */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008755 for (i = 0; i < NB_LOG_LEVELS; i++)
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008756 hlua_class_const_int(L, log_levels[i], i);
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008757
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008758 /* Register special functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008759 hlua_class_function(L, "register_init", hlua_register_init);
8760 hlua_class_function(L, "register_task", hlua_register_task);
8761 hlua_class_function(L, "register_fetches", hlua_register_fetches);
8762 hlua_class_function(L, "register_converters", hlua_register_converters);
8763 hlua_class_function(L, "register_action", hlua_register_action);
8764 hlua_class_function(L, "register_service", hlua_register_service);
8765 hlua_class_function(L, "register_cli", hlua_register_cli);
8766 hlua_class_function(L, "yield", hlua_yield);
8767 hlua_class_function(L, "set_nice", hlua_set_nice);
8768 hlua_class_function(L, "sleep", hlua_sleep);
8769 hlua_class_function(L, "msleep", hlua_msleep);
8770 hlua_class_function(L, "add_acl", hlua_add_acl);
8771 hlua_class_function(L, "del_acl", hlua_del_acl);
8772 hlua_class_function(L, "set_map", hlua_set_map);
8773 hlua_class_function(L, "del_map", hlua_del_map);
8774 hlua_class_function(L, "tcp", hlua_socket_new);
8775 hlua_class_function(L, "log", hlua_log);
8776 hlua_class_function(L, "Debug", hlua_log_debug);
8777 hlua_class_function(L, "Info", hlua_log_info);
8778 hlua_class_function(L, "Warning", hlua_log_warning);
8779 hlua_class_function(L, "Alert", hlua_log_alert);
8780 hlua_class_function(L, "done", hlua_done);
8781 hlua_fcn_reg_core_fcn(L);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008782
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008783 lua_setglobal(L, "core");
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008784
8785 /*
8786 *
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008787 * Create "act" object.
8788 *
8789 */
8790
8791 /* This table entry is the object "act" base. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008792 lua_newtable(L);
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008793
8794 /* push action return constants */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008795 hlua_class_const_int(L, "CONTINUE", ACT_RET_CONT);
8796 hlua_class_const_int(L, "STOP", ACT_RET_STOP);
8797 hlua_class_const_int(L, "YIELD", ACT_RET_YIELD);
8798 hlua_class_const_int(L, "ERROR", ACT_RET_ERR);
8799 hlua_class_const_int(L, "DONE", ACT_RET_DONE);
8800 hlua_class_const_int(L, "DENY", ACT_RET_DENY);
8801 hlua_class_const_int(L, "ABORT", ACT_RET_ABRT);
8802 hlua_class_const_int(L, "INVALID", ACT_RET_INV);
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008803
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008804 hlua_class_function(L, "wake_time", hlua_set_wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01008805
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008806 lua_setglobal(L, "act");
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008807
8808 /*
8809 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008810 * Register class Map
8811 *
8812 */
8813
8814 /* This table entry is the object "Map" base. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008815 lua_newtable(L);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008816
8817 /* register pattern types. */
8818 for (i=0; i<PAT_MATCH_NUM; i++)
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008819 hlua_class_const_int(L, pat_match_names[i], i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008820 for (i=0; i<PAT_MATCH_NUM; i++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008821 snprintf(trash.area, trash.size, "_%s", pat_match_names[i]);
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008822 hlua_class_const_int(L, trash.area, i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008823 }
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008824
8825 /* register constructor. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008826 hlua_class_function(L, "new", hlua_map_new);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008827
8828 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008829 lua_newtable(L);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008830
Ilya Shipitsind4259502020-04-08 01:07:56 +05008831 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008832 lua_pushstring(L, "__index");
8833 lua_newtable(L);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008834
8835 /* Register . */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008836 hlua_class_function(L, "lookup", hlua_map_lookup);
8837 hlua_class_function(L, "slookup", hlua_map_slookup);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008838
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008839 lua_rawset(L, -3);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008840
Thierry Fournier45e78d72016-02-19 18:34:46 +01008841 /* Register previous table in the registry with reference and named entry.
8842 * The function hlua_register_metatable() pops the stack, so we
8843 * previously create a copy of the table.
8844 */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008845 lua_pushvalue(L, -1); /* Copy the -1 entry and push it on the stack. */
8846 class_map_ref = hlua_register_metatable(L, CLASS_MAP);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008847
8848 /* Assign the metatable to the mai Map object. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008849 lua_setmetatable(L, -2);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008850
8851 /* Set a name to the table. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008852 lua_setglobal(L, "Map");
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008853
8854 /*
8855 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008856 * Register class Channel
8857 *
8858 */
8859
8860 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008861 lua_newtable(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008862
Ilya Shipitsind4259502020-04-08 01:07:56 +05008863 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008864 lua_pushstring(L, "__index");
8865 lua_newtable(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008866
8867 /* Register . */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008868 hlua_class_function(L, "get", hlua_channel_get);
8869 hlua_class_function(L, "dup", hlua_channel_dup);
8870 hlua_class_function(L, "getline", hlua_channel_getline);
8871 hlua_class_function(L, "set", hlua_channel_set);
8872 hlua_class_function(L, "append", hlua_channel_append);
8873 hlua_class_function(L, "send", hlua_channel_send);
8874 hlua_class_function(L, "forward", hlua_channel_forward);
8875 hlua_class_function(L, "get_in_len", hlua_channel_get_in_len);
8876 hlua_class_function(L, "get_out_len", hlua_channel_get_out_len);
8877 hlua_class_function(L, "is_full", hlua_channel_is_full);
8878 hlua_class_function(L, "is_resp", hlua_channel_is_resp);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008879
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008880 lua_rawset(L, -3);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008881
8882 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008883 class_channel_ref = hlua_register_metatable(L, CLASS_CHANNEL);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008884
8885 /*
8886 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008887 * Register class Fetches
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008888 *
8889 */
8890
8891 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008892 lua_newtable(L);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008893
Ilya Shipitsind4259502020-04-08 01:07:56 +05008894 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008895 lua_pushstring(L, "__index");
8896 lua_newtable(L);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008897
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008898 /* Browse existing fetches and create the associated
8899 * object method.
8900 */
8901 sf = NULL;
8902 while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) {
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008903 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8904 * by an underscore.
8905 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008906 strncpy(trash.area, sf->kw, trash.size);
8907 trash.area[trash.size - 1] = '\0';
8908 for (p = trash.area; *p; p++)
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008909 if (*p == '.' || *p == '-' || *p == '+')
8910 *p = '_';
8911
8912 /* Register the function. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008913 lua_pushstring(L, trash.area);
8914 lua_pushlightuserdata(L, sf);
8915 lua_pushcclosure(L, hlua_run_sample_fetch, 1);
8916 lua_rawset(L, -3);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008917 }
8918
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008919 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008920
8921 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008922 class_fetches_ref = hlua_register_metatable(L, CLASS_FETCHES);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008923
8924 /*
8925 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008926 * Register class Converters
8927 *
8928 */
8929
8930 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008931 lua_newtable(L);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008932
8933 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008934 lua_pushstring(L, "__index");
8935 lua_newtable(L);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008936
8937 /* Browse existing converters and create the associated
8938 * object method.
8939 */
8940 sc = NULL;
8941 while ((sc = sample_conv_getnext(sc, &idx)) != NULL) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008942 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8943 * by an underscore.
8944 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008945 strncpy(trash.area, sc->kw, trash.size);
8946 trash.area[trash.size - 1] = '\0';
8947 for (p = trash.area; *p; p++)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008948 if (*p == '.' || *p == '-' || *p == '+')
8949 *p = '_';
8950
8951 /* Register the function. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008952 lua_pushstring(L, trash.area);
8953 lua_pushlightuserdata(L, sc);
8954 lua_pushcclosure(L, hlua_run_sample_conv, 1);
8955 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008956 }
8957
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008958 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008959
8960 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008961 class_converters_ref = hlua_register_metatable(L, CLASS_CONVERTERS);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008962
8963 /*
8964 *
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008965 * Register class HTTP
8966 *
8967 */
8968
8969 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008970 lua_newtable(L);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008971
Ilya Shipitsind4259502020-04-08 01:07:56 +05008972 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008973 lua_pushstring(L, "__index");
8974 lua_newtable(L);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008975
8976 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008977 hlua_class_function(L, "req_get_headers",hlua_http_req_get_headers);
8978 hlua_class_function(L, "req_del_header", hlua_http_req_del_hdr);
8979 hlua_class_function(L, "req_rep_header", hlua_http_req_rep_hdr);
8980 hlua_class_function(L, "req_rep_value", hlua_http_req_rep_val);
8981 hlua_class_function(L, "req_add_header", hlua_http_req_add_hdr);
8982 hlua_class_function(L, "req_set_header", hlua_http_req_set_hdr);
8983 hlua_class_function(L, "req_set_method", hlua_http_req_set_meth);
8984 hlua_class_function(L, "req_set_path", hlua_http_req_set_path);
8985 hlua_class_function(L, "req_set_query", hlua_http_req_set_query);
8986 hlua_class_function(L, "req_set_uri", hlua_http_req_set_uri);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008987
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008988 hlua_class_function(L, "res_get_headers",hlua_http_res_get_headers);
8989 hlua_class_function(L, "res_del_header", hlua_http_res_del_hdr);
8990 hlua_class_function(L, "res_rep_header", hlua_http_res_rep_hdr);
8991 hlua_class_function(L, "res_rep_value", hlua_http_res_rep_val);
8992 hlua_class_function(L, "res_add_header", hlua_http_res_add_hdr);
8993 hlua_class_function(L, "res_set_header", hlua_http_res_set_hdr);
8994 hlua_class_function(L, "res_set_status", hlua_http_res_set_status);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008995
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008996 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008997
8998 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008999 class_http_ref = hlua_register_metatable(L, CLASS_HTTP);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01009000
9001 /*
9002 *
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009003 * Register class AppletTCP
9004 *
9005 */
9006
9007 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009008 lua_newtable(L);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009009
Ilya Shipitsind4259502020-04-08 01:07:56 +05009010 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009011 lua_pushstring(L, "__index");
9012 lua_newtable(L);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009013
9014 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009015 hlua_class_function(L, "getline", hlua_applet_tcp_getline);
9016 hlua_class_function(L, "receive", hlua_applet_tcp_recv);
9017 hlua_class_function(L, "send", hlua_applet_tcp_send);
9018 hlua_class_function(L, "set_priv", hlua_applet_tcp_set_priv);
9019 hlua_class_function(L, "get_priv", hlua_applet_tcp_get_priv);
9020 hlua_class_function(L, "set_var", hlua_applet_tcp_set_var);
9021 hlua_class_function(L, "unset_var", hlua_applet_tcp_unset_var);
9022 hlua_class_function(L, "get_var", hlua_applet_tcp_get_var);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009023
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009024 lua_settable(L, -3);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009025
9026 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009027 class_applet_tcp_ref = hlua_register_metatable(L, CLASS_APPLET_TCP);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009028
9029 /*
9030 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009031 * Register class AppletHTTP
9032 *
9033 */
9034
9035 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009036 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009037
Ilya Shipitsind4259502020-04-08 01:07:56 +05009038 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009039 lua_pushstring(L, "__index");
9040 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009041
9042 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009043 hlua_class_function(L, "set_priv", hlua_applet_http_set_priv);
9044 hlua_class_function(L, "get_priv", hlua_applet_http_get_priv);
9045 hlua_class_function(L, "set_var", hlua_applet_http_set_var);
9046 hlua_class_function(L, "unset_var", hlua_applet_http_unset_var);
9047 hlua_class_function(L, "get_var", hlua_applet_http_get_var);
9048 hlua_class_function(L, "getline", hlua_applet_http_getline);
9049 hlua_class_function(L, "receive", hlua_applet_http_recv);
9050 hlua_class_function(L, "send", hlua_applet_http_send);
9051 hlua_class_function(L, "add_header", hlua_applet_http_addheader);
9052 hlua_class_function(L, "set_status", hlua_applet_http_status);
9053 hlua_class_function(L, "start_response", hlua_applet_http_start_response);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009054
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009055 lua_settable(L, -3);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009056
9057 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009058 class_applet_http_ref = hlua_register_metatable(L, CLASS_APPLET_HTTP);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009059
9060 /*
9061 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01009062 * Register class TXN
9063 *
9064 */
9065
9066 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009067 lua_newtable(L);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01009068
Ilya Shipitsind4259502020-04-08 01:07:56 +05009069 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009070 lua_pushstring(L, "__index");
9071 lua_newtable(L);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01009072
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01009073 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009074 hlua_class_function(L, "set_priv", hlua_set_priv);
9075 hlua_class_function(L, "get_priv", hlua_get_priv);
9076 hlua_class_function(L, "set_var", hlua_set_var);
9077 hlua_class_function(L, "unset_var", hlua_unset_var);
9078 hlua_class_function(L, "get_var", hlua_get_var);
9079 hlua_class_function(L, "done", hlua_txn_done);
9080 hlua_class_function(L, "reply", hlua_txn_reply_new);
9081 hlua_class_function(L, "set_loglevel", hlua_txn_set_loglevel);
9082 hlua_class_function(L, "set_tos", hlua_txn_set_tos);
9083 hlua_class_function(L, "set_mark", hlua_txn_set_mark);
9084 hlua_class_function(L, "set_priority_class", hlua_txn_set_priority_class);
9085 hlua_class_function(L, "set_priority_offset", hlua_txn_set_priority_offset);
9086 hlua_class_function(L, "deflog", hlua_txn_deflog);
9087 hlua_class_function(L, "log", hlua_txn_log);
9088 hlua_class_function(L, "Debug", hlua_txn_log_debug);
9089 hlua_class_function(L, "Info", hlua_txn_log_info);
9090 hlua_class_function(L, "Warning", hlua_txn_log_warning);
9091 hlua_class_function(L, "Alert", hlua_txn_log_alert);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01009092
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009093 lua_rawset(L, -3);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01009094
9095 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009096 class_txn_ref = hlua_register_metatable(L, CLASS_TXN);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009097
9098 /*
9099 *
Christopher Faulet700d9e82020-01-31 12:21:52 +01009100 * Register class reply
9101 *
9102 */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009103 lua_newtable(L);
9104 lua_pushstring(L, "__index");
9105 lua_newtable(L);
9106 hlua_class_function(L, "set_status", hlua_txn_reply_set_status);
9107 hlua_class_function(L, "add_header", hlua_txn_reply_add_header);
9108 hlua_class_function(L, "del_header", hlua_txn_reply_del_header);
9109 hlua_class_function(L, "set_body", hlua_txn_reply_set_body);
9110 lua_settable(L, -3); /* Sets the __index entry. */
9111 class_txn_reply_ref = luaL_ref(L, LUA_REGISTRYINDEX);
Christopher Faulet700d9e82020-01-31 12:21:52 +01009112
9113
9114 /*
9115 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009116 * Register class Socket
9117 *
9118 */
9119
9120 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009121 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009122
Ilya Shipitsind4259502020-04-08 01:07:56 +05009123 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009124 lua_pushstring(L, "__index");
9125 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009126
Baptiste Assmann84bb4932015-03-02 21:40:06 +01009127#ifdef USE_OPENSSL
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009128 hlua_class_function(L, "connect_ssl", hlua_socket_connect_ssl);
Baptiste Assmann84bb4932015-03-02 21:40:06 +01009129#endif
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009130 hlua_class_function(L, "connect", hlua_socket_connect);
9131 hlua_class_function(L, "send", hlua_socket_send);
9132 hlua_class_function(L, "receive", hlua_socket_receive);
9133 hlua_class_function(L, "close", hlua_socket_close);
9134 hlua_class_function(L, "getpeername", hlua_socket_getpeername);
9135 hlua_class_function(L, "getsockname", hlua_socket_getsockname);
9136 hlua_class_function(L, "setoption", hlua_socket_setoption);
9137 hlua_class_function(L, "settimeout", hlua_socket_settimeout);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009138
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009139 lua_rawset(L, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009140
9141 /* Register the garbage collector entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009142 lua_pushstring(L, "__gc");
9143 lua_pushcclosure(L, hlua_socket_gc, 0);
9144 lua_rawset(L, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009145
9146 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009147 class_socket_ref = hlua_register_metatable(L, CLASS_SOCKET);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009148
Thierry Fournieraafc7772020-12-04 11:47:47 +01009149 lua_atpanic(L, hlua_panic_safe);
9150
9151 return L;
9152}
9153
9154void hlua_init(void) {
9155 int i;
Amaury Denoyelle239fdbf2021-03-24 10:22:03 +01009156 char *errmsg;
Thierry Fournieraafc7772020-12-04 11:47:47 +01009157#ifdef USE_OPENSSL
9158 struct srv_kw *kw;
9159 int tmp_error;
9160 char *error;
9161 char *args[] = { /* SSL client configuration. */
9162 "ssl",
9163 "verify",
9164 "none",
9165 NULL
9166 };
9167#endif
9168
9169 /* Init post init function list head */
9170 for (i = 0; i < MAX_THREADS + 1; i++)
9171 LIST_INIT(&hlua_init_functions[i]);
9172
9173 /* Init state for common/shared lua parts */
9174 hlua_state_id = 0;
9175 ha_set_tid(0);
9176 hlua_states[0] = hlua_init_state(0);
9177
9178 /* Init state 1 for thread 0. We have at least one thread. */
9179 hlua_state_id = 1;
9180 ha_set_tid(0);
9181 hlua_states[1] = hlua_init_state(1);
9182
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009183 /* Proxy and server configuration initialisation. */
Amaury Denoyelle239fdbf2021-03-24 10:22:03 +01009184 socket_proxy = alloc_new_proxy("LUA-SOCKET", PR_CAP_FE|PR_CAP_BE|PR_CAP_LUA, &errmsg);
9185 if (!socket_proxy) {
9186 fprintf(stderr, "Lua init: %s\n", errmsg);
9187 exit(1);
9188 }
9189 proxy_preset_defaults(socket_proxy);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009190
9191 /* Init TCP server: unchanged parameters */
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01009192 socket_tcp = new_server(socket_proxy);
9193 if (!socket_tcp) {
9194 fprintf(stderr, "Lua init: failed to allocate tcp server socket\n");
9195 exit(1);
9196 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009197
9198#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009199 /* Init TCP server: unchanged parameters */
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01009200 socket_ssl = new_server(socket_proxy);
9201 if (!socket_ssl) {
9202 fprintf(stderr, "Lua init: failed to allocate ssl server socket\n");
9203 exit(1);
9204 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009205
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01009206 socket_ssl->use_ssl = 1;
9207 socket_ssl->xprt = xprt_get(XPRT_SSL);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009208
Bertrand Jacquin80839ff2021-01-21 19:14:46 +00009209 for (i = 0; args[i] != NULL; i++) {
9210 if ((kw = srv_find_kw(args[i])) != NULL) { /* Maybe it's registered server keyword */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009211 /*
9212 *
9213 * If the keyword is not known, we can search in the registered
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08009214 * server keywords. This is useful to configure special SSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009215 * features like client certificates and ssl_verify.
9216 *
9217 */
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01009218 tmp_error = kw->parse(args, &i, socket_proxy, socket_ssl, &error);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009219 if (tmp_error != 0) {
9220 fprintf(stderr, "INTERNAL ERROR: %s\n", error);
9221 abort(); /* This must be never arrives because the command line
9222 not editable by the user. */
9223 }
Bertrand Jacquin80839ff2021-01-21 19:14:46 +00009224 i += kw->skip;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009225 }
9226 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009227#endif
Thierry Fournier75933d42016-01-21 09:30:18 +01009228
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01009229}
Willy Tarreaubb57d942016-12-21 19:04:56 +01009230
Tim Duesterhusd0c0ca22020-07-04 11:53:26 +02009231static void hlua_deinit()
9232{
Willy Tarreau186f3762020-12-04 11:48:12 +01009233 int thr;
9234
9235 for (thr = 0; thr < MAX_THREADS+1; thr++) {
9236 if (hlua_states[thr])
9237 lua_close(hlua_states[thr]);
9238 }
Willy Tarreau430bf4a2021-03-04 09:45:32 +01009239
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01009240 free_server(socket_tcp);
Willy Tarreau430bf4a2021-03-04 09:45:32 +01009241
Willy Tarreau0f143af2021-03-05 10:41:48 +01009242#ifdef USE_OPENSSL
Amaury Denoyelle704ba1d2021-03-24 17:57:47 +01009243 free_server(socket_ssl);
Willy Tarreau0f143af2021-03-05 10:41:48 +01009244#endif
Amaury Denoyelle239fdbf2021-03-24 10:22:03 +01009245
9246 free_proxy(socket_proxy);
Tim Duesterhusd0c0ca22020-07-04 11:53:26 +02009247}
9248
9249REGISTER_POST_DEINIT(hlua_deinit);
9250
Willy Tarreau80713382018-11-26 10:19:54 +01009251static void hlua_register_build_options(void)
9252{
Willy Tarreaubb57d942016-12-21 19:04:56 +01009253 char *ptr = NULL;
Willy Tarreau80713382018-11-26 10:19:54 +01009254
Willy Tarreaubb57d942016-12-21 19:04:56 +01009255 memprintf(&ptr, "Built with Lua version : %s", LUA_RELEASE);
9256 hap_register_build_opts(ptr, 1);
9257}
Willy Tarreau80713382018-11-26 10:19:54 +01009258
9259INITCALL0(STG_REGISTER, hlua_register_build_options);