blob: fbccaaaaaf418832ab284bda8d26fba690d1343a [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
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010013#include <ctype.h>
Thierry FOURNIERbabae282015-09-17 11:36:37 +020014#include <setjmp.h>
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010015
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010016#include <lauxlib.h>
17#include <lua.h>
18#include <lualib.h>
19
Thierry FOURNIER463119c2015-03-10 00:35:36 +010020#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 503
21#error "Requires Lua 5.3 or later."
Cyril Bontédc0306e2015-03-02 00:08:40 +010022#endif
23
Willy Tarreau8d2b7772020-05-27 10:58:19 +020024#include <import/ebpttree.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010025
Willy Tarreaub2551052020-06-09 09:07:15 +020026#include <haproxy/api.h>
27#include <haproxy/applet.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020028#include <haproxy/arg.h>
Christopher Fauletd25d9262020-08-06 11:04:46 +020029#include <haproxy/auth.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020030#include <haproxy/cfgparse.h>
Willy Tarreauf1d32c42020-06-04 21:07:02 +020031#include <haproxy/channel.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020032#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020033#include <haproxy/connection.h>
Willy Tarreau5413a872020-06-02 19:33:08 +020034#include <haproxy/h1.h>
Willy Tarreau86416052020-06-04 09:20:54 +020035#include <haproxy/hlua.h>
Willy Tarreau8c794002020-06-04 10:05:25 +020036#include <haproxy/hlua_fcn.h>
Willy Tarreauc2b1ff02020-06-04 21:21:03 +020037#include <haproxy/http_ana.h>
Willy Tarreau126ba3a2020-06-04 18:26:43 +020038#include <haproxy/http_fetch.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020039#include <haproxy/http_htx.h>
Willy Tarreauc761f842020-06-04 11:40:28 +020040#include <haproxy/http_rules.h>
Willy Tarreau36979d92020-06-05 17:27:29 +020041#include <haproxy/log.h>
Willy Tarreau2cd58092020-06-04 15:10:43 +020042#include <haproxy/map.h>
Willy Tarreau8efbdfb2020-06-04 11:29:21 +020043#include <haproxy/obj_type.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +020044#include <haproxy/pattern.h>
Willy Tarreau469509b2020-06-04 15:13:30 +020045#include <haproxy/payload.h>
Willy Tarreaua264d962020-06-04 22:29:18 +020046#include <haproxy/proxy-t.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020047#include <haproxy/regex.h>
Willy Tarreaue6ce10b2020-06-04 15:33:47 +020048#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +020049#include <haproxy/server-t.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +020050#include <haproxy/session.h>
Willy Tarreau2eec9b52020-06-04 19:58:55 +020051#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020052#include <haproxy/stream.h>
Willy Tarreau5e539c92020-06-04 20:45:39 +020053#include <haproxy/stream_interface.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +020054#include <haproxy/task.h>
Willy Tarreau8b550af2020-06-04 17:42:48 +020055#include <haproxy/tcp_rules.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020056#include <haproxy/thread.h>
Willy Tarreau48fbcae2020-06-03 18:09:46 +020057#include <haproxy/tools.h>
Willy Tarreaua1718922020-06-04 16:25:31 +020058#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020059#include <haproxy/xref.h>
60
Thierry FOURNIER380d0932015-01-23 14:27:52 +010061
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010062/* Lua uses longjmp to perform yield or throwing errors. This
63 * macro is used only for identifying the function that can
64 * not return because a longjmp is executed.
65 * __LJMP marks a prototype of hlua file that can use longjmp.
66 * WILL_LJMP() marks an lua function that will use longjmp.
67 * MAY_LJMP() marks an lua function that may use longjmp.
68 */
69#define __LJMP
Willy Tarreau4e7cc332018-10-20 17:45:48 +020070#define WILL_LJMP(func) do { func; my_unreachable(); } while(0)
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010071#define MAY_LJMP(func) func
72
Thierry FOURNIERbabae282015-09-17 11:36:37 +020073/* This couple of function executes securely some Lua calls outside of
74 * the lua runtime environment. Each Lua call can return a longjmp
75 * if it encounter a memory error.
76 *
77 * Lua documentation extract:
78 *
79 * If an error happens outside any protected environment, Lua calls
80 * a panic function (see lua_atpanic) and then calls abort, thus
81 * exiting the host application. Your panic function can avoid this
82 * exit by never returning (e.g., doing a long jump to your own
83 * recovery point outside Lua).
84 *
85 * The panic function runs as if it were a message handler (see
86 * §2.3); in particular, the error message is at the top of the
87 * stack. However, there is no guarantee about stack space. To push
88 * anything on the stack, the panic function must first check the
89 * available space (see §4.2).
90 *
91 * We must check all the Lua entry point. This includes:
92 * - The include/proto/hlua.h exported functions
93 * - the task wrapper function
94 * - The action wrapper function
95 * - The converters wrapper function
96 * - The sample-fetch wrapper functions
97 *
Ilya Shipitsin46a030c2020-07-05 16:36:08 +050098 * It is tolerated that the initialisation function returns an abort.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -080099 * Before each Lua abort, an error message is written on stderr.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200100 *
101 * The macro SET_SAFE_LJMP initialise the longjmp. The Macro
102 * RESET_SAFE_LJMP reset the longjmp. These function must be macro
103 * because they must be exists in the program stack when the longjmp
104 * is called.
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +0200105 *
106 * Note that the Lua processing is not really thread safe. It provides
107 * heavy system which consists to add our own lock function in the Lua
108 * code and recompile the library. This system will probably not accepted
109 * by maintainers of various distribs.
110 *
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500111 * Our main execution point of the Lua is the function lua_resume(). A
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +0200112 * quick looking on the Lua sources displays a lua_lock() a the start
113 * of function and a lua_unlock() at the end of the function. So I
114 * conclude that the Lua thread safe mode just perform a mutex around
115 * all execution. So I prefer to do this in the HAProxy code, it will be
116 * easier for distro maintainers.
117 *
118 * Note that the HAProxy lua functions rounded by the macro SET_SAFE_LJMP
119 * and RESET_SAFE_LJMP manipulates the Lua stack, so it will be careful
120 * to set mutex around these functions.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200121 */
Willy Tarreau86abe442018-11-25 20:12:18 +0100122__decl_spinlock(hlua_global_lock);
Thierry FOURNIERffbad792017-07-12 11:39:04 +0200123THREAD_LOCAL jmp_buf safe_ljmp_env;
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200124static int hlua_panic_safe(lua_State *L) { return 0; }
Willy Tarreau9d6bb5a2020-02-06 15:55:41 +0100125static int hlua_panic_ljmp(lua_State *L) { WILL_LJMP(longjmp(safe_ljmp_env, 1)); }
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200126
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100127/* This is the chained list of struct hlua_function referenced
128 * for haproxy action, sample-fetches, converters, cli and
129 * applet bindings. It is used for a post-initialisation control.
130 */
131static struct list referenced_functions = LIST_HEAD_INIT(referenced_functions);
132
Thierry Fournierc7492592020-11-28 23:57:24 +0100133/* This variable is used only during initialization to identify the Lua state
134 * currently being initialized. 0 is the common lua state, 1 to n are the Lua
135 * states dedicated to each thread (in this case hlua_state_id==tid+1).
136 */
137static int hlua_state_id;
138
Thierry Fournier59f11be2020-11-29 00:37:41 +0100139/* This is a NULL-terminated list of lua file which are referenced to load per thread */
140static char **per_thread_load = NULL;
141
142lua_State *hlua_init_state(int thread_id);
143
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100144#define SET_SAFE_LJMP_L(__L, __HLUA) \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200145 ({ \
146 int ret; \
Thierry Fournier021d9862020-11-28 23:42:03 +0100147 if ((__HLUA)->state_id == 0) \
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100148 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200149 if (setjmp(safe_ljmp_env) != 0) { \
150 lua_atpanic(__L, hlua_panic_safe); \
151 ret = 0; \
Thierry Fournier021d9862020-11-28 23:42:03 +0100152 if ((__HLUA)->state_id == 0) \
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100153 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200154 } else { \
155 lua_atpanic(__L, hlua_panic_ljmp); \
156 ret = 1; \
157 } \
158 ret; \
159 })
160
161/* If we are the last function catching Lua errors, we
162 * must reset the panic function.
163 */
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100164#define RESET_SAFE_LJMP_L(__L, __HLUA) \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200165 do { \
166 lua_atpanic(__L, hlua_panic_safe); \
Thierry Fournier021d9862020-11-28 23:42:03 +0100167 if ((__HLUA)->state_id == 0) \
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100168 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200169 } while(0)
170
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100171#define SET_SAFE_LJMP(__HLUA) \
172 SET_SAFE_LJMP_L((__HLUA)->T, __HLUA)
173
174#define RESET_SAFE_LJMP(__HLUA) \
175 RESET_SAFE_LJMP_L((__HLUA)->T, __HLUA)
176
177#define SET_SAFE_LJMP_PARENT(__HLUA) \
Thierry Fournier021d9862020-11-28 23:42:03 +0100178 SET_SAFE_LJMP_L(hlua_states[(__HLUA)->state_id], __HLUA)
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100179
180#define RESET_SAFE_LJMP_PARENT(__HLUA) \
Thierry Fournier021d9862020-11-28 23:42:03 +0100181 RESET_SAFE_LJMP_L(hlua_states[(__HLUA)->state_id], __HLUA)
Thierry Fournier7cbe5042020-11-28 17:02:21 +0100182
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200183/* Applet status flags */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200184#define APPLET_DONE 0x01 /* applet processing is done. */
Christopher Faulet18c2e8d2019-03-01 12:02:08 +0100185/* unused: 0x02 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200186#define APPLET_HDR_SENT 0x04 /* Response header sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +0200187/* unused: 0x08, 0x10 */
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +0100188#define APPLET_HTTP11 0x20 /* Last chunk sent. */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +0100189#define APPLET_RSP_SENT 0x40 /* The response was fully sent */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200190
Thierry Fournierafc63e22020-11-28 17:06:51 +0100191/* The main Lua execution context. The 0 index is the
192 * common state shared by all threads.
193 */
Willy Tarreau186f3762020-12-04 11:48:12 +0100194static lua_State *hlua_states[MAX_THREADS + 1];
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100195
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100196/* This is the memory pool containing struct lua for applets
197 * (including cli).
198 */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100199DECLARE_STATIC_POOL(pool_head_hlua, "hlua", sizeof(struct hlua));
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100200
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100201/* Used for Socket connection. */
202static struct proxy socket_proxy;
203static struct server socket_tcp;
204#ifdef USE_OPENSSL
205static struct server socket_ssl;
206#endif
207
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100208/* List head of the function called at the initialisation time. */
Thierry Fournierc7492592020-11-28 23:57:24 +0100209struct list hlua_init_functions[MAX_THREADS + 1];
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100210
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100211/* The following variables contains the reference of the different
212 * Lua classes. These references are useful for identify metadata
213 * associated with an object.
214 */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100215static int class_txn_ref;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100216static int class_socket_ref;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +0100217static int class_channel_ref;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +0100218static int class_fetches_ref;
Thierry FOURNIER594afe72015-03-10 23:58:30 +0100219static int class_converters_ref;
Thierry FOURNIER08504f42015-03-16 14:17:08 +0100220static int class_http_ref;
Thierry FOURNIER3def3932015-04-07 11:27:54 +0200221static int class_map_ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200222static int class_applet_tcp_ref;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200223static int class_applet_http_ref;
Christopher Faulet700d9e82020-01-31 12:21:52 +0100224static int class_txn_reply_ref;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100225
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100226/* Global Lua execution timeout. By default Lua, execution linked
Willy Tarreau87b09662015-04-03 00:22:06 +0200227 * with stream (actions, sample-fetches and converters) have a
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100228 * short timeout. Lua linked with tasks doesn't have a timeout
229 * because a task may remain alive during all the haproxy execution.
230 */
231static unsigned int hlua_timeout_session = 4000; /* session timeout. */
232static unsigned int hlua_timeout_task = TICK_ETERNITY; /* task timeout. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200233static unsigned int hlua_timeout_applet = 4000; /* applet timeout. */
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100234
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100235/* Interrupts the Lua processing each "hlua_nb_instruction" instructions.
236 * it is used for preventing infinite loops.
237 *
238 * I test the scheer with an infinite loop containing one incrementation
239 * and one test. I run this loop between 10 seconds, I raise a ceil of
240 * 710M loops from one interrupt each 9000 instructions, so I fix the value
241 * to one interrupt each 10 000 instructions.
242 *
243 * configured | Number of
244 * instructions | loops executed
245 * between two | in milions
246 * forced yields |
247 * ---------------+---------------
248 * 10 | 160
249 * 500 | 670
250 * 1000 | 680
251 * 5000 | 700
252 * 7000 | 700
253 * 8000 | 700
254 * 9000 | 710 <- ceil
255 * 10000 | 710
256 * 100000 | 710
257 * 1000000 | 710
258 *
259 */
260static unsigned int hlua_nb_instruction = 10000;
261
Willy Tarreaucdb53462020-12-02 12:12:00 +0100262/* Descriptor for the memory allocation state. The limit is pre-initialised to
263 * 0 until it is replaced by "tune.lua.maxmem" during the config parsing, or it
264 * is replaced with ~0 during post_init after everything was loaded. This way
265 * it is guaranteed that if limit is ~0 the boot is complete and that if it's
266 * zero it's not yet limited and proper accounting is required.
Willy Tarreau32f61e22015-03-18 17:54:59 +0100267 */
268struct hlua_mem_allocator {
269 size_t allocated;
270 size_t limit;
271};
272
Willy Tarreaucdb53462020-12-02 12:12:00 +0100273static struct hlua_mem_allocator hlua_global_allocator THREAD_ALIGNED(64);
Willy Tarreau32f61e22015-03-18 17:54:59 +0100274
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100275/* These functions converts types between HAProxy internal args or
276 * sample and LUA types. Another function permits to check if the
277 * LUA stack contains arguments according with an required ARG_T
278 * format.
279 */
280static int hlua_arg2lua(lua_State *L, const struct arg *arg);
281static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100282__LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100283 uint64_t mask, struct proxy *p);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100284static int hlua_smp2lua(lua_State *L, struct sample *smp);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100285static int hlua_smp2lua_str(lua_State *L, struct sample *smp);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100286static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp);
287
Christopher Faulet9d1332b2020-02-24 16:46:16 +0100288__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200289
Thierry Fournier59f11be2020-11-29 00:37:41 +0100290struct prepend_path {
291 struct list l;
292 char *type;
293 char *path;
294};
295
296static struct list prepend_path_list = LIST_HEAD_INIT(prepend_path_list);
297
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200298#define SEND_ERR(__be, __fmt, __args...) \
299 do { \
300 send_log(__be, LOG_ERR, __fmt, ## __args); \
301 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) \
Christopher Faulet767a84b2017-11-24 16:50:31 +0100302 ha_alert(__fmt, ## __args); \
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200303 } while (0)
304
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100305static inline struct hlua_function *new_hlua_function()
306{
307 struct hlua_function *fcn;
Thierry Fournierc7492592020-11-28 23:57:24 +0100308 int i;
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100309
310 fcn = calloc(1, sizeof(*fcn));
311 if (!fcn)
312 return NULL;
313 LIST_ADDQ(&referenced_functions, &fcn->l);
Thierry Fournierc7492592020-11-28 23:57:24 +0100314 for (i = 0; i < MAX_THREADS + 1; i++)
315 fcn->function_ref[i] = -1;
Thierry Fournier62a22aa2020-11-28 21:06:35 +0100316 return fcn;
317}
318
Thierry Fournierc7492592020-11-28 23:57:24 +0100319/* If the common state is set, the stack id is 0, otherwise it is the tid + 1 */
320static inline int fcn_ref_to_stack_id(struct hlua_function *fcn)
321{
322 if (fcn->function_ref[0] == -1)
323 return tid + 1;
324 return 0;
325}
326
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100327/* Used to check an Lua function type in the stack. It creates and
328 * returns a reference of the function. This function throws an
329 * error if the rgument is not a "function".
330 */
331__LJMP unsigned int hlua_checkfunction(lua_State *L, int argno)
332{
333 if (!lua_isfunction(L, argno)) {
Thierry FOURNIERfd1e9552018-02-23 18:41:18 +0100334 const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, argno));
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100335 WILL_LJMP(luaL_argerror(L, argno, msg));
336 }
337 lua_pushvalue(L, argno);
338 return luaL_ref(L, LUA_REGISTRYINDEX);
339}
340
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200341/* Return the string that is of the top of the stack. */
342const char *hlua_get_top_error_string(lua_State *L)
343{
344 if (lua_gettop(L) < 1)
345 return "unknown error";
346 if (lua_type(L, -1) != LUA_TSTRING)
347 return "unknown error";
348 return lua_tostring(L, -1);
349}
350
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200351__LJMP static const char *hlua_traceback(lua_State *L)
352{
353 lua_Debug ar;
354 int level = 0;
Willy Tarreau83061a82018-07-13 11:56:34 +0200355 struct buffer *msg = get_trash_chunk();
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200356 int filled = 0;
357
358 while (lua_getstack(L, level++, &ar)) {
359
360 /* Add separator */
361 if (filled)
362 chunk_appendf(msg, ", ");
363 filled = 1;
364
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)
375 chunk_appendf(msg, "%s:%d ", ar.short_src, ar.currentline);
376 else
377 chunk_appendf(msg, "%s ", ar.short_src);
378
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? */
387 chunk_appendf(msg, "%s '%s'", ar.namewhat, ar.name); /* use it */
388
389 else if (*ar.what == 'm') /* "main", the code is not executed in a function */
390 chunk_appendf(msg, "main chunk");
391
392 else if (*ar.what != 'C') /* for Lua functions, use <file:line> */
393 chunk_appendf(msg, "C function line %d", ar.linedefined);
394
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 &&
916 !strcmp(p->uri_auth->userlist->name, argp[idx].data.str.area))
917 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);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001348 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)) {
1709 /* error case: we cant use luaL_error because we must
1710 * 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
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001806 /* If we cant write, wakeup the pending write signals. */
1807 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
1810 /* If we cant read, wakeup the pending read signals. */
1811 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
2722 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 */
2840 sess = session_new(&socket_proxy, NULL, &appctx->obj_type);
2841 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
Willy Tarreau87787ac2017-08-28 16:22:54 +02002846 strm = stream_new(sess, &appctx->obj_type);
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;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002863 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
Thierry Fournier77016da2020-08-15 14:35:51 +02002955 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2956 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
Thierry Fournier77016da2020-08-15 14:35:51 +02002985 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2986 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
Thierry Fournier77016da2020-08-15 14:35:51 +02003027 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3028 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
Thierry Fournier77016da2020-08-15 14:35:51 +02003077 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3078 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
Thierry Fournier77016da2020-08-15 14:35:51 +02003151 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3152 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
Thierry Fournier77016da2020-08-15 14:35:51 +02003182 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3183 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
Thierry Fournier77016da2020-08-15 14:35:51 +02003293 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3294 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
3905 /* dont check the max length read and dont check. */
3906 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 Fauleta2097962019-07-15 16:25:33 +02004208 if (type == HTX_BLK_EOM || type == HTX_BLK_TLR || type == HTX_BLK_EOT)
4209 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
Christopher Faulete461e342018-12-18 16:43:35 +01004382 if (type == HTX_BLK_EOM) {
4383 stop = 1;
4384 break;
4385 }
4386
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004387 vlen = sz;
4388 if (vlen > count) {
4389 if (type != HTX_BLK_DATA)
4390 break;
4391 vlen = count;
4392 }
4393
4394 switch (type) {
4395 case HTX_BLK_UNUSED:
4396 break;
4397
4398 case HTX_BLK_DATA:
4399 v = htx_get_blk_value(htx, blk);
4400 v.len = vlen;
4401 nl = istchr(v, '\n');
4402 if (nl != NULL) {
4403 stop = 1;
4404 vlen = nl - v.ptr + 1;
4405 }
4406 luaL_addlstring(&appctx->b, v.ptr, vlen);
4407 break;
4408
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004409 case HTX_BLK_TLR:
4410 case HTX_BLK_EOM:
4411 stop = 1;
4412 break;
4413
4414 default:
4415 break;
4416 }
4417
4418 co_set_data(req, co_data(req) - vlen);
4419 count -= vlen;
4420 if (sz == vlen)
4421 blk = htx_remove_blk(htx, blk);
4422 else {
4423 htx_cut_data_blk(htx, blk, vlen);
4424 break;
4425 }
4426 }
4427
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004428 htx_to_buf(htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004429 if (!stop) {
4430 si_cant_get(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004431 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004432 }
4433
4434 /* return the result. */
4435 luaL_pushresult(&appctx->b);
4436 return 1;
4437}
4438
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004439
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004440/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004441__LJMP static int hlua_applet_http_getline(lua_State *L)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004442{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004443 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004444
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004445 /* Initialise the string catenation. */
4446 luaL_buffinit(L, &appctx->b);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004447
Christopher Fauleta2097962019-07-15 16:25:33 +02004448 return MAY_LJMP(hlua_applet_http_getline_yield(L, 0, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004449}
4450
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004451/* If expected data not yet available, it returns a yield. This function
4452 * consumes the data in the buffer. It returns a string containing the
4453 * data. This string can be empty.
4454 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004455__LJMP static int hlua_applet_http_recv_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004456{
4457 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4458 struct stream_interface *si = appctx->appctx->owner;
4459 struct channel *req = si_oc(si);
4460 struct htx *htx;
4461 struct htx_blk *blk;
4462 size_t count;
4463 int len;
4464
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004465 htx = htx_from_buf(&req->buf);
4466 len = MAY_LJMP(luaL_checkinteger(L, 2));
4467 count = co_data(req);
Christopher Faulet29f17582019-05-23 11:03:26 +02004468 blk = htx_get_head_blk(htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004469 while (count && len && blk) {
4470 enum htx_blk_type type = htx_get_blk_type(blk);
4471 uint32_t sz = htx_get_blksz(blk);
4472 struct ist v;
4473 uint32_t vlen;
4474
Christopher Faulete461e342018-12-18 16:43:35 +01004475 if (type == HTX_BLK_EOM) {
4476 len = 0;
4477 break;
4478 }
4479
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004480 vlen = sz;
4481 if (len > 0 && vlen > len)
4482 vlen = len;
4483 if (vlen > count) {
4484 if (type != HTX_BLK_DATA)
4485 break;
4486 vlen = count;
4487 }
4488
4489 switch (type) {
4490 case HTX_BLK_UNUSED:
4491 break;
4492
4493 case HTX_BLK_DATA:
4494 v = htx_get_blk_value(htx, blk);
4495 luaL_addlstring(&appctx->b, v.ptr, vlen);
4496 break;
4497
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004498 case HTX_BLK_TLR:
4499 case HTX_BLK_EOM:
4500 len = 0;
4501 break;
4502
4503 default:
4504 break;
4505 }
4506
4507 co_set_data(req, co_data(req) - vlen);
4508 count -= vlen;
4509 if (len > 0)
4510 len -= vlen;
4511 if (sz == vlen)
4512 blk = htx_remove_blk(htx, blk);
4513 else {
4514 htx_cut_data_blk(htx, blk, vlen);
4515 break;
4516 }
4517 }
4518
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004519 htx_to_buf(htx, &req->buf);
4520
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004521 /* If we are no other data available, yield waiting for new data. */
4522 if (len) {
4523 if (len > 0) {
4524 lua_pushinteger(L, len);
4525 lua_replace(L, 2);
4526 }
4527 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004528 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004529 }
4530
4531 /* return the result. */
4532 luaL_pushresult(&appctx->b);
4533 return 1;
4534}
4535
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004536/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004537__LJMP static int hlua_applet_http_recv(lua_State *L)
4538{
4539 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4540 int len = -1;
4541
4542 /* Check arguments. */
4543 if (lua_gettop(L) > 2)
4544 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
4545 if (lua_gettop(L) >= 2) {
4546 len = MAY_LJMP(luaL_checkinteger(L, 2));
4547 lua_pop(L, 1);
4548 }
4549
Christopher Fauleta2097962019-07-15 16:25:33 +02004550 lua_pushinteger(L, len);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004551
Christopher Fauleta2097962019-07-15 16:25:33 +02004552 /* Initialise the string catenation. */
4553 luaL_buffinit(L, &appctx->b);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004554
Christopher Fauleta2097962019-07-15 16:25:33 +02004555 return MAY_LJMP(hlua_applet_http_recv_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004556}
4557
4558/* Append data in the output side of the buffer. This data is immediately
4559 * sent. The function returns the amount of data written. If the buffer
4560 * cannot contain the data, the function yields. The function returns -1
4561 * if the channel is closed.
4562 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004563__LJMP static int hlua_applet_http_send_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004564{
4565 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4566 struct stream_interface *si = appctx->appctx->owner;
4567 struct channel *res = si_ic(si);
4568 struct htx *htx = htx_from_buf(&res->buf);
4569 const char *data;
4570 size_t len;
4571 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4572 int max;
4573
Christopher Faulet9060fc02019-07-03 11:39:30 +02004574 max = htx_get_max_blksz(htx, channel_htx_recv_max(res, htx));
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004575 if (!max)
4576 goto snd_yield;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004577
4578 data = MAY_LJMP(luaL_checklstring(L, 2, &len));
4579
4580 /* Get the max amount of data which can write as input in the channel. */
4581 if (max > (len - l))
4582 max = len - l;
4583
4584 /* Copy data. */
Willy Tarreau0a7ef022019-05-28 10:30:11 +02004585 max = htx_add_data(htx, ist2(data + l, max));
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004586 channel_add_input(res, max);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004587
4588 /* update counters. */
4589 l += max;
4590 lua_pop(L, 1);
4591 lua_pushinteger(L, l);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004592
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004593 /* If some data is not send, declares the situation to the
4594 * applet, and returns a yield.
4595 */
4596 if (l < len) {
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004597 snd_yield:
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004598 htx_to_buf(htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004599 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004600 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004601 }
4602
Christopher Fauleta2097962019-07-15 16:25:33 +02004603 htx_to_buf(htx, &res->buf);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004604 return 1;
4605}
4606
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004607/* Just a wrapper of "hlua_applet_send_yield". This wrapper permits
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004608 * yield the LUA process, and resume it without checking the
4609 * input arguments.
4610 */
4611__LJMP static int hlua_applet_http_send(lua_State *L)
4612{
4613 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004614
4615 /* We want to send some data. Headers must be sent. */
4616 if (!(appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
4617 hlua_pusherror(L, "Lua: 'send' you must call start_response() before sending data.");
4618 WILL_LJMP(lua_error(L));
4619 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004620
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004621 /* This integer is used for followinf the amount of data sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004622 lua_pushinteger(L, 0);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004623
Christopher Fauleta2097962019-07-15 16:25:33 +02004624 return MAY_LJMP(hlua_applet_http_send_yield(L, 0, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004625}
4626
4627__LJMP static int hlua_applet_http_addheader(lua_State *L)
4628{
4629 const char *name;
4630 int ret;
4631
4632 MAY_LJMP(hlua_checkapplet_http(L, 1));
4633 name = MAY_LJMP(luaL_checkstring(L, 2));
4634 MAY_LJMP(luaL_checkstring(L, 3));
4635
4636 /* Push in the stack the "response" entry. */
4637 ret = lua_getfield(L, 1, "response");
4638 if (ret != LUA_TTABLE) {
4639 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response'] "
4640 "is expected as an array. %s found", lua_typename(L, ret));
4641 WILL_LJMP(lua_error(L));
4642 }
4643
4644 /* check if the header is already registered if it is not
4645 * the case, register it.
4646 */
4647 ret = lua_getfield(L, -1, name);
4648 if (ret == LUA_TNIL) {
4649
4650 /* Entry not found. */
4651 lua_pop(L, 1); /* remove the nil. The "response" table is the top of the stack. */
4652
4653 /* Insert the new header name in the array in the top of the stack.
4654 * It left the new array in the top of the stack.
4655 */
4656 lua_newtable(L);
4657 lua_pushvalue(L, 2);
4658 lua_pushvalue(L, -2);
4659 lua_settable(L, -4);
4660
4661 } else if (ret != LUA_TTABLE) {
4662
4663 /* corruption error. */
4664 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response']['%s'] "
4665 "is expected as an array. %s found", name, lua_typename(L, ret));
4666 WILL_LJMP(lua_error(L));
4667 }
4668
4669 /* Now the top od thestack is an array of values. We push
4670 * the header value as new entry.
4671 */
4672 lua_pushvalue(L, 3);
4673 ret = lua_rawlen(L, -2);
4674 lua_rawseti(L, -2, ret + 1);
4675 lua_pushboolean(L, 1);
4676 return 1;
4677}
4678
4679__LJMP static int hlua_applet_http_status(lua_State *L)
4680{
4681 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4682 int status = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004683 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004684
4685 if (status < 100 || status > 599) {
4686 lua_pushboolean(L, 0);
4687 return 1;
4688 }
4689
4690 appctx->appctx->ctx.hlua_apphttp.status = status;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004691 appctx->appctx->ctx.hlua_apphttp.reason = reason;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004692 lua_pushboolean(L, 1);
4693 return 1;
4694}
4695
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004696
Christopher Fauleta2097962019-07-15 16:25:33 +02004697__LJMP static int hlua_applet_http_send_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004698{
4699 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4700 struct stream_interface *si = appctx->appctx->owner;
4701 struct channel *res = si_ic(si);
4702 struct htx *htx;
4703 struct htx_sl *sl;
4704 struct h1m h1m;
4705 const char *status, *reason;
4706 const char *name, *value;
4707 size_t nlen, vlen;
4708 unsigned int flags;
4709
4710 /* Send the message at once. */
4711 htx = htx_from_buf(&res->buf);
4712 h1m_init_res(&h1m);
4713
4714 /* Use the same http version than the request. */
4715 status = ultoa_r(appctx->appctx->ctx.hlua_apphttp.status, trash.area, trash.size);
4716 reason = appctx->appctx->ctx.hlua_apphttp.reason;
4717 if (reason == NULL)
4718 reason = http_get_reason(appctx->appctx->ctx.hlua_apphttp.status);
4719 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11) {
4720 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
4721 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"), ist(status), ist(reason));
4722 }
4723 else {
4724 flags = HTX_SL_F_IS_RESP;
4725 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"), ist(status), ist(reason));
4726 }
4727 if (!sl) {
4728 hlua_pusherror(L, "Lua applet http '%s': Failed to create response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004729 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004730 WILL_LJMP(lua_error(L));
4731 }
4732 sl->info.res.status = appctx->appctx->ctx.hlua_apphttp.status;
4733
4734 /* Get the array associated to the field "response" in the object AppletHTTP. */
4735 lua_pushvalue(L, 0);
4736 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
4737 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004738 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004739 WILL_LJMP(lua_error(L));
4740 }
4741
4742 /* Browse the list of headers. */
4743 lua_pushnil(L);
4744 while(lua_next(L, -2) != 0) {
4745 /* We expect a string as -2. */
4746 if (lua_type(L, -2) != LUA_TSTRING) {
4747 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004748 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004749 lua_typename(L, lua_type(L, -2)));
4750 WILL_LJMP(lua_error(L));
4751 }
4752 name = lua_tolstring(L, -2, &nlen);
4753
4754 /* We expect an array as -1. */
4755 if (lua_type(L, -1) != LUA_TTABLE) {
4756 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 +01004757 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004758 name,
4759 lua_typename(L, lua_type(L, -1)));
4760 WILL_LJMP(lua_error(L));
4761 }
4762
4763 /* Browse the table who is on the top of the stack. */
4764 lua_pushnil(L);
4765 while(lua_next(L, -2) != 0) {
4766 int id;
4767
4768 /* We expect a number as -2. */
4769 if (lua_type(L, -2) != LUA_TNUMBER) {
4770 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 +01004771 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004772 name,
4773 lua_typename(L, lua_type(L, -2)));
4774 WILL_LJMP(lua_error(L));
4775 }
4776 id = lua_tointeger(L, -2);
4777
4778 /* We expect a string as -2. */
4779 if (lua_type(L, -1) != LUA_TSTRING) {
4780 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 +01004781 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004782 name, id,
4783 lua_typename(L, lua_type(L, -1)));
4784 WILL_LJMP(lua_error(L));
4785 }
4786 value = lua_tolstring(L, -1, &vlen);
4787
4788 /* Simple Protocol checks. */
4789 if (isteqi(ist2(name, nlen), ist("transfer-encoding")))
Christopher Faulet700d9e82020-01-31 12:21:52 +01004790 h1_parse_xfer_enc_header(&h1m, ist2(value, vlen));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004791 else if (isteqi(ist2(name, nlen), ist("content-length"))) {
4792 struct ist v = ist2(value, vlen);
4793 int ret;
4794
4795 ret = h1_parse_cont_len_header(&h1m, &v);
4796 if (ret < 0) {
4797 hlua_pusherror(L, "Lua applet http '%s': Invalid '%s' header.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004798 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004799 name);
4800 WILL_LJMP(lua_error(L));
4801 }
4802 else if (ret == 0)
4803 goto next; /* Skip it */
4804 }
4805
4806 /* Add a new header */
4807 if (!htx_add_header(htx, ist2(name, nlen), ist2(value, vlen))) {
4808 hlua_pusherror(L, "Lua applet http '%s': Failed to add header '%s' in the response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004809 appctx->appctx->rule->arg.hlua_rule->fcn->name,
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004810 name);
4811 WILL_LJMP(lua_error(L));
4812 }
4813 next:
4814 /* Remove the array from the stack, and get next element with a remaining string. */
4815 lua_pop(L, 1);
4816 }
4817
4818 /* Remove the array from the stack, and get next element with a remaining string. */
4819 lua_pop(L, 1);
4820 }
4821
4822 if (h1m.flags & H1_MF_CHNK)
4823 h1m.flags &= ~H1_MF_CLEN;
4824 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
4825 h1m.flags |= H1_MF_XFER_LEN;
4826
4827 /* Uset HTX start-line flags */
4828 if (h1m.flags & H1_MF_XFER_ENC)
4829 flags |= HTX_SL_F_XFER_ENC;
4830 if (h1m.flags & H1_MF_XFER_LEN) {
4831 flags |= HTX_SL_F_XFER_LEN;
4832 if (h1m.flags & H1_MF_CHNK)
4833 flags |= HTX_SL_F_CHNK;
4834 else if (h1m.flags & H1_MF_CLEN)
4835 flags |= HTX_SL_F_CLEN;
4836 if (h1m.body_len == 0)
4837 flags |= HTX_SL_F_BODYLESS;
4838 }
4839 sl->flags |= flags;
4840
4841 /* If we dont have a content-length set, and the HTTP version is 1.1
4842 * and the status code implies the presence of a message body, we must
4843 * announce a transfer encoding chunked. This is required by haproxy
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004844 * for the keepalive compliance. If the applet announces a transfer-encoding
4845 * chunked itself, don't do anything.
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004846 */
4847 if ((flags & (HTX_SL_F_VER_11|HTX_SL_F_XFER_LEN)) == HTX_SL_F_VER_11 &&
4848 appctx->appctx->ctx.hlua_apphttp.status >= 200 &&
4849 appctx->appctx->ctx.hlua_apphttp.status != 204 &&
4850 appctx->appctx->ctx.hlua_apphttp.status != 304) {
4851 /* Add a new header */
4852 sl->flags |= (HTX_SL_F_XFER_ENC|H1_MF_CHNK|H1_MF_XFER_LEN);
4853 if (!htx_add_header(htx, ist("transfer-encoding"), ist("chunked"))) {
4854 hlua_pusherror(L, "Lua applet http '%s': Failed to add header 'transfer-encoding' in the response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004855 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004856 WILL_LJMP(lua_error(L));
4857 }
4858 }
4859
4860 /* Finalize headers. */
4861 if (!htx_add_endof(htx, HTX_BLK_EOH)) {
4862 hlua_pusherror(L, "Lua applet http '%s': Failed create the response.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01004863 appctx->appctx->rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004864 WILL_LJMP(lua_error(L));
4865 }
4866
4867 if (htx_used_space(htx) > b_size(&res->buf) - global.tune.maxrewrite) {
4868 b_reset(&res->buf);
4869 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4870 WILL_LJMP(lua_error(L));
4871 }
4872
4873 htx_to_buf(htx, &res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004874 channel_add_input(res, htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004875
4876 /* Headers sent, set the flag. */
4877 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4878 return 0;
4879
4880}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004881/* We will build the status line and the headers of the HTTP response.
4882 * We will try send at once if its not possible, we give back the hand
4883 * waiting for more room.
4884 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004885__LJMP static int hlua_applet_http_start_response_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004886{
4887 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4888 struct stream_interface *si = appctx->appctx->owner;
4889 struct channel *res = si_ic(si);
4890
4891 if (co_data(res)) {
4892 si_rx_room_blk(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004893 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_start_response_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004894 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004895 return MAY_LJMP(hlua_applet_http_send_response(L));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004896}
4897
4898
Christopher Fauleta2097962019-07-15 16:25:33 +02004899__LJMP static int hlua_applet_http_start_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004900{
Christopher Fauleta2097962019-07-15 16:25:33 +02004901 return MAY_LJMP(hlua_applet_http_start_response_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004902}
4903
Christopher Fauleta2097962019-07-15 16:25:33 +02004904/*
4905 *
4906 *
4907 * Class HTTP
4908 *
4909 *
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004910 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004911
4912/* Returns a struct hlua_txn if the stack entry "ud" is
4913 * a class stream, otherwise it throws an error.
4914 */
4915__LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004916{
Christopher Fauleta2097962019-07-15 16:25:33 +02004917 return MAY_LJMP(hlua_checkudata(L, ud, class_http_ref));
4918}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004919
Christopher Fauleta2097962019-07-15 16:25:33 +02004920/* This function creates and push in the stack a HTTP object
4921 * according with a current TXN.
4922 */
4923static int hlua_http_new(lua_State *L, struct hlua_txn *txn)
4924{
4925 struct hlua_txn *htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004926
Christopher Fauleta2097962019-07-15 16:25:33 +02004927 /* Check stack size. */
4928 if (!lua_checkstack(L, 3))
4929 return 0;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004930
Christopher Fauleta2097962019-07-15 16:25:33 +02004931 /* Create the object: obj[0] = userdata.
4932 * Note that the base of the Converters object is the
4933 * same than the TXN object.
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004934 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004935 lua_newtable(L);
4936 htxn = lua_newuserdata(L, sizeof(*htxn));
4937 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004938
4939 htxn->s = txn->s;
4940 htxn->p = txn->p;
Christopher Faulet256b69a2019-05-23 11:14:21 +02004941 htxn->dir = txn->dir;
4942 htxn->flags = txn->flags;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004943
4944 /* Pop a class stream metatable and affect it to the table. */
4945 lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref);
4946 lua_setmetatable(L, -2);
4947
4948 return 1;
4949}
4950
4951/* This function creates ans returns an array of HTTP headers.
4952 * This function does not fails. It is used as wrapper with the
4953 * 2 following functions.
4954 */
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004955__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004956{
Christopher Fauleta2097962019-07-15 16:25:33 +02004957 struct htx *htx;
4958 int32_t pos;
4959
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004960 /* Create the table. */
4961 lua_newtable(L);
4962
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004963
Christopher Fauleta2097962019-07-15 16:25:33 +02004964 htx = htxbuf(&msg->chn->buf);
4965 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4966 struct htx_blk *blk = htx_get_blk(htx, pos);
4967 enum htx_blk_type type = htx_get_blk_type(blk);
4968 struct ist n, v;
4969 int len;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004970
Christopher Fauleta2097962019-07-15 16:25:33 +02004971 if (type == HTX_BLK_HDR) {
4972 n = htx_get_blk_name(htx,blk);
4973 v = htx_get_blk_value(htx, blk);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004974 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004975 else if (type == HTX_BLK_EOH)
4976 break;
4977 else
4978 continue;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004979
Christopher Fauleta2097962019-07-15 16:25:33 +02004980 /* Check for existing entry:
4981 * assume that the table is on the top of the stack, and
4982 * push the key in the stack, the function lua_gettable()
4983 * perform the lookup.
4984 */
4985 lua_pushlstring(L, n.ptr, n.len);
4986 lua_gettable(L, -2);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004987
Christopher Fauleta2097962019-07-15 16:25:33 +02004988 switch (lua_type(L, -1)) {
4989 case LUA_TNIL:
4990 /* Table not found, create it. */
4991 lua_pop(L, 1); /* remove the nil value. */
4992 lua_pushlstring(L, n.ptr, n.len); /* push the header name as key. */
4993 lua_newtable(L); /* create and push empty table. */
4994 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
4995 lua_rawseti(L, -2, 0); /* index header value (pop it). */
4996 lua_rawset(L, -3); /* index new table with header name (pop the values). */
Christopher Faulet724a12c2018-12-13 22:12:15 +01004997 break;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004998
Christopher Fauleta2097962019-07-15 16:25:33 +02004999 case LUA_TTABLE:
5000 /* Entry found: push the value in the table. */
5001 len = lua_rawlen(L, -1);
5002 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
5003 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
5004 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
5005 break;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005006
Christopher Fauleta2097962019-07-15 16:25:33 +02005007 default:
5008 /* Other cases are errors. */
5009 hlua_pusherror(L, "internal error during the parsing of headers.");
5010 WILL_LJMP(lua_error(L));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005011 }
5012 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005013 return 1;
5014}
5015
5016__LJMP static int hlua_http_req_get_headers(lua_State *L)
5017{
5018 struct hlua_txn *htxn;
5019
5020 MAY_LJMP(check_args(L, 1, "req_get_headers"));
5021 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5022
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005023 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005024 WILL_LJMP(lua_error(L));
5025
Christopher Faulet9d1332b2020-02-24 16:46:16 +01005026 return hlua_http_get_headers(L, &htxn->s->txn->req);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005027}
5028
5029__LJMP static int hlua_http_res_get_headers(lua_State *L)
5030{
5031 struct hlua_txn *htxn;
5032
5033 MAY_LJMP(check_args(L, 1, "res_get_headers"));
5034 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5035
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005036 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005037 WILL_LJMP(lua_error(L));
5038
Christopher Faulet9d1332b2020-02-24 16:46:16 +01005039 return hlua_http_get_headers(L, &htxn->s->txn->rsp);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005040}
5041
5042/* This function replace full header, or just a value in
5043 * the request or in the response. It is a wrapper fir the
5044 * 4 following functions.
5045 */
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005046__LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct http_msg *msg, int full)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005047{
5048 size_t name_len;
5049 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5050 const char *reg = MAY_LJMP(luaL_checkstring(L, 3));
5051 const char *value = MAY_LJMP(luaL_checkstring(L, 4));
Christopher Fauleta2097962019-07-15 16:25:33 +02005052 struct htx *htx;
Dragan Dosen26743032019-04-30 15:54:36 +02005053 struct my_regex *re;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005054
Dragan Dosen26743032019-04-30 15:54:36 +02005055 if (!(re = regex_comp(reg, 1, 1, NULL)))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005056 WILL_LJMP(luaL_argerror(L, 3, "invalid regex"));
5057
Christopher Fauleta2097962019-07-15 16:25:33 +02005058 htx = htxbuf(&msg->chn->buf);
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005059 http_replace_hdrs(chn_strm(msg->chn), htx, ist2(name, name_len), value, re, full);
Dragan Dosen26743032019-04-30 15:54:36 +02005060 regex_free(re);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005061 return 0;
5062}
5063
5064__LJMP static int hlua_http_req_rep_hdr(lua_State *L)
5065{
5066 struct hlua_txn *htxn;
5067
5068 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
5069 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5070
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005071 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005072 WILL_LJMP(lua_error(L));
5073
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005074 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005075}
5076
5077__LJMP static int hlua_http_res_rep_hdr(lua_State *L)
5078{
5079 struct hlua_txn *htxn;
5080
5081 MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
5082 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5083
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005084 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005085 WILL_LJMP(lua_error(L));
5086
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005087 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005088}
5089
5090__LJMP static int hlua_http_req_rep_val(lua_State *L)
5091{
5092 struct hlua_txn *htxn;
5093
5094 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
5095 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5096
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005097 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005098 WILL_LJMP(lua_error(L));
5099
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005100 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005101}
5102
5103__LJMP static int hlua_http_res_rep_val(lua_State *L)
5104{
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005105 struct hlua_txn *htxn;
5106
5107 MAY_LJMP(check_args(L, 4, "res_rep_val"));
5108 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5109
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005110 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005111 WILL_LJMP(lua_error(L));
5112
Christopher Fauletd1914aa2020-02-24 16:52:46 +01005113 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005114}
5115
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005116/* This function deletes all the occurrences of an header.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005117 * It is a wrapper for the 2 following functions.
5118 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005119__LJMP static inline int hlua_http_del_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005120{
5121 size_t len;
5122 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005123 struct htx *htx = htxbuf(&msg->chn->buf);
5124 struct http_hdr_ctx ctx;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005125
Christopher Fauleta2097962019-07-15 16:25:33 +02005126 ctx.blk = NULL;
5127 while (http_find_header(htx, ist2(name, len), &ctx, 1))
5128 http_remove_header(htx, &ctx);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005129 return 0;
5130}
5131
5132__LJMP static int hlua_http_req_del_hdr(lua_State *L)
5133{
5134 struct hlua_txn *htxn;
5135
5136 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
5137 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5138
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005139 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005140 WILL_LJMP(lua_error(L));
5141
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005142 return hlua_http_del_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005143}
5144
5145__LJMP static int hlua_http_res_del_hdr(lua_State *L)
5146{
5147 struct hlua_txn *htxn;
5148
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005149 MAY_LJMP(check_args(L, 2, "res_del_hdr"));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005150 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5151
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005152 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005153 WILL_LJMP(lua_error(L));
5154
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005155 return hlua_http_del_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005156}
5157
5158/* This function adds an header. It is a wrapper used by
5159 * the 2 following functions.
5160 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005161__LJMP static inline int hlua_http_add_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005162{
5163 size_t name_len;
5164 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5165 size_t value_len;
5166 const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005167 struct htx *htx = htxbuf(&msg->chn->buf);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005168
Christopher Fauleta2097962019-07-15 16:25:33 +02005169 lua_pushboolean(L, http_add_header(htx, ist2(name, name_len),
5170 ist2(value, value_len)));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005171 return 0;
5172}
5173
5174__LJMP static int hlua_http_req_add_hdr(lua_State *L)
5175{
5176 struct hlua_txn *htxn;
5177
5178 MAY_LJMP(check_args(L, 3, "req_add_hdr"));
5179 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5180
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005181 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005182 WILL_LJMP(lua_error(L));
5183
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005184 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005185}
5186
5187__LJMP static int hlua_http_res_add_hdr(lua_State *L)
5188{
5189 struct hlua_txn *htxn;
5190
5191 MAY_LJMP(check_args(L, 3, "res_add_hdr"));
5192 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5193
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005194 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005195 WILL_LJMP(lua_error(L));
5196
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005197 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005198}
5199
5200static int hlua_http_req_set_hdr(lua_State *L)
5201{
5202 struct hlua_txn *htxn;
5203
5204 MAY_LJMP(check_args(L, 3, "req_set_hdr"));
5205 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5206
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005207 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005208 WILL_LJMP(lua_error(L));
5209
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005210 hlua_http_del_hdr(L, &htxn->s->txn->req);
5211 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005212}
5213
5214static int hlua_http_res_set_hdr(lua_State *L)
5215{
5216 struct hlua_txn *htxn;
5217
5218 MAY_LJMP(check_args(L, 3, "res_set_hdr"));
5219 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5220
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005221 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005222 WILL_LJMP(lua_error(L));
5223
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005224 hlua_http_del_hdr(L, &htxn->s->txn->rsp);
5225 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005226}
5227
5228/* This function set the method. */
5229static int hlua_http_req_set_meth(lua_State *L)
5230{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005231 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005232 size_t name_len;
5233 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005234
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005235 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005236 WILL_LJMP(lua_error(L));
5237
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005238 lua_pushboolean(L, http_req_replace_stline(0, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005239 return 1;
5240}
5241
5242/* This function set the method. */
5243static int hlua_http_req_set_path(lua_State *L)
5244{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005245 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005246 size_t name_len;
5247 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02005248
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005249 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005250 WILL_LJMP(lua_error(L));
5251
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005252 lua_pushboolean(L, http_req_replace_stline(1, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005253 return 1;
5254}
5255
5256/* This function set the query-string. */
5257static int hlua_http_req_set_query(lua_State *L)
5258{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005259 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005260 size_t name_len;
5261 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005262
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005263 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005264 WILL_LJMP(lua_error(L));
5265
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005266 /* Check length. */
5267 if (name_len > trash.size - 1) {
5268 lua_pushboolean(L, 0);
5269 return 1;
5270 }
5271
5272 /* Add the mark question as prefix. */
5273 chunk_reset(&trash);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005274 trash.area[trash.data++] = '?';
5275 memcpy(trash.area + trash.data, name, name_len);
5276 trash.data += name_len;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005277
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005278 lua_pushboolean(L,
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005279 http_req_replace_stline(2, trash.area, trash.data, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005280 return 1;
5281}
5282
5283/* This function set the uri. */
5284static int hlua_http_req_set_uri(lua_State *L)
5285{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005286 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005287 size_t name_len;
5288 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005289
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005290 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005291 WILL_LJMP(lua_error(L));
5292
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005293 lua_pushboolean(L, http_req_replace_stline(3, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005294 return 1;
5295}
5296
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005297/* This function set the response code & optionally reason. */
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005298static int hlua_http_res_set_status(lua_State *L)
5299{
5300 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5301 unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
Christopher Faulet96bff762019-12-17 13:46:18 +01005302 const char *str = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
5303 const struct ist reason = ist2(str, (str ? strlen(str) : 0));
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005304
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005305 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005306 WILL_LJMP(lua_error(L));
5307
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005308 http_res_set_status(code, reason, htxn->s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005309 return 0;
5310}
5311
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005312/*
5313 *
5314 *
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005315 * Class TXN
5316 *
5317 *
5318 */
5319
5320/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02005321 * a class stream, otherwise it throws an error.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005322 */
5323__LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud)
5324{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005325 return MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005326}
5327
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005328__LJMP static int hlua_set_var(lua_State *L)
5329{
5330 struct hlua_txn *htxn;
5331 const char *name;
5332 size_t len;
5333 struct sample smp;
5334
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005335 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
5336 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005337
5338 /* It is useles to retrieve the stream, but this function
5339 * runs only in a stream context.
5340 */
5341 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5342 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5343
5344 /* Converts the third argument in a sample. */
Amaury Denoyellebc0af6a2020-10-29 17:21:20 +01005345 memset(&smp, 0, sizeof(smp));
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005346 hlua_lua2smp(L, 3, &smp);
5347
5348 /* Store the sample in a variable. */
Willy Tarreau7560dd42016-03-10 16:28:58 +01005349 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005350
5351 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
5352 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
5353 else
5354 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
5355
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005356 return 1;
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005357}
5358
Christopher Faulet85d79c92016-11-09 16:54:56 +01005359__LJMP static int hlua_unset_var(lua_State *L)
5360{
5361 struct hlua_txn *htxn;
5362 const char *name;
5363 size_t len;
5364 struct sample smp;
5365
5366 MAY_LJMP(check_args(L, 2, "unset_var"));
5367
5368 /* It is useles to retrieve the stream, but this function
5369 * runs only in a stream context.
5370 */
5371 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5372 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5373
5374 /* Unset the variable. */
5375 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005376 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
5377 return 1;
Christopher Faulet85d79c92016-11-09 16:54:56 +01005378}
5379
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005380__LJMP static int hlua_get_var(lua_State *L)
5381{
5382 struct hlua_txn *htxn;
5383 const char *name;
5384 size_t len;
5385 struct sample smp;
5386
5387 MAY_LJMP(check_args(L, 2, "get_var"));
5388
5389 /* It is useles to retrieve the stream, but this function
5390 * runs only in a stream context.
5391 */
5392 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5393 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5394
Willy Tarreau7560dd42016-03-10 16:28:58 +01005395 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01005396 if (!vars_get_by_name(name, len, &smp)) {
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005397 lua_pushnil(L);
5398 return 1;
5399 }
5400
5401 return hlua_smp2lua(L, &smp);
5402}
5403
Willy Tarreau59551662015-03-10 14:23:13 +01005404__LJMP static int hlua_set_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005405{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005406 struct hlua *hlua;
5407
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005408 MAY_LJMP(check_args(L, 2, "set_priv"));
5409
Willy Tarreau87b09662015-04-03 00:22:06 +02005410 /* It is useles to retrieve the stream, but this function
5411 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005412 */
5413 MAY_LJMP(hlua_checktxn(L, 1));
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005414
5415 /* Get hlua struct, or NULL if we execute from main lua state */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005416 hlua = hlua_gethlua(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005417 if (!hlua)
5418 return 0;
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005419
5420 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02005421 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005422
5423 /* Get and store new value. */
5424 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
5425 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
5426
5427 return 0;
5428}
5429
Willy Tarreau59551662015-03-10 14:23:13 +01005430__LJMP static int hlua_get_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005431{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005432 struct hlua *hlua;
5433
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005434 MAY_LJMP(check_args(L, 1, "get_priv"));
5435
Willy Tarreau87b09662015-04-03 00:22:06 +02005436 /* It is useles to retrieve the stream, but this function
5437 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005438 */
5439 MAY_LJMP(hlua_checktxn(L, 1));
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005440
5441 /* Get hlua struct, or NULL if we execute from main lua state */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005442 hlua = hlua_gethlua(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01005443 if (!hlua) {
5444 lua_pushnil(L);
5445 return 1;
5446 }
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005447
5448 /* Push configuration index in the stack. */
5449 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
5450
5451 return 1;
5452}
5453
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005454/* Create stack entry containing a class TXN. This function
5455 * return 0 if the stack does not contains free slots,
5456 * otherwise it returns 1.
5457 */
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005458static int hlua_txn_new(lua_State *L, struct stream *s, struct proxy *p, int dir, int flags)
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005459{
Willy Tarreaude491382015-04-06 11:04:28 +02005460 struct hlua_txn *htxn;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005461
5462 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005463 if (!lua_checkstack(L, 3))
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005464 return 0;
5465
5466 /* NOTE: The allocation never fails. The failure
5467 * throw an error, and the function never returns.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005468 * if the throw is not available, the process is aborted.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005469 */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005470 /* Create the object: obj[0] = userdata. */
5471 lua_newtable(L);
Willy Tarreaude491382015-04-06 11:04:28 +02005472 htxn = lua_newuserdata(L, sizeof(*htxn));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005473 lua_rawseti(L, -2, 0);
5474
Willy Tarreaude491382015-04-06 11:04:28 +02005475 htxn->s = s;
5476 htxn->p = p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01005477 htxn->dir = dir;
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005478 htxn->flags = flags;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005479
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005480 /* Create the "f" field that contains a list of fetches. */
5481 lua_pushstring(L, "f");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005482 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005483 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005484 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005485
5486 /* Create the "sf" field that contains a list of stringsafe fetches. */
5487 lua_pushstring(L, "sf");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005488 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP | HLUA_F_AS_STRING))
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005489 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005490 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005491
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005492 /* Create the "c" field that contains a list of converters. */
5493 lua_pushstring(L, "c");
Willy Tarreaude491382015-04-06 11:04:28 +02005494 if (!hlua_converters_new(L, htxn, 0))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005495 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005496 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005497
5498 /* Create the "sc" field that contains a list of stringsafe converters. */
5499 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01005500 if (!hlua_converters_new(L, htxn, HLUA_F_AS_STRING))
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005501 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005502 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005503
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005504 /* Create the "req" field that contains the request channel object. */
5505 lua_pushstring(L, "req");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005506 if (!hlua_channel_new(L, &s->req))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005507 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005508 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005509
5510 /* Create the "res" field that contains the response channel object. */
5511 lua_pushstring(L, "res");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005512 if (!hlua_channel_new(L, &s->res))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005513 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005514 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005515
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005516 /* Creates the HTTP object is the current proxy allows http. */
5517 lua_pushstring(L, "http");
5518 if (p->mode == PR_MODE_HTTP) {
Willy Tarreaude491382015-04-06 11:04:28 +02005519 if (!hlua_http_new(L, htxn))
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005520 return 0;
5521 }
5522 else
5523 lua_pushnil(L);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005524 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005525
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005526 /* Pop a class sesison metatable and affect it to the userdata. */
5527 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref);
5528 lua_setmetatable(L, -2);
5529
5530 return 1;
5531}
5532
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005533__LJMP static int hlua_txn_deflog(lua_State *L)
5534{
5535 const char *msg;
5536 struct hlua_txn *htxn;
5537
5538 MAY_LJMP(check_args(L, 2, "deflog"));
5539 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5540 msg = MAY_LJMP(luaL_checkstring(L, 2));
5541
5542 hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg);
5543 return 0;
5544}
5545
5546__LJMP static int hlua_txn_log(lua_State *L)
5547{
5548 int level;
5549 const char *msg;
5550 struct hlua_txn *htxn;
5551
5552 MAY_LJMP(check_args(L, 3, "log"));
5553 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5554 level = MAY_LJMP(luaL_checkinteger(L, 2));
5555 msg = MAY_LJMP(luaL_checkstring(L, 3));
5556
5557 if (level < 0 || level >= NB_LOG_LEVELS)
5558 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
5559
5560 hlua_sendlog(htxn->s->be, level, msg);
5561 return 0;
5562}
5563
5564__LJMP static int hlua_txn_log_debug(lua_State *L)
5565{
5566 const char *msg;
5567 struct hlua_txn *htxn;
5568
5569 MAY_LJMP(check_args(L, 2, "Debug"));
5570 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5571 msg = MAY_LJMP(luaL_checkstring(L, 2));
5572 hlua_sendlog(htxn->s->be, LOG_DEBUG, msg);
5573 return 0;
5574}
5575
5576__LJMP static int hlua_txn_log_info(lua_State *L)
5577{
5578 const char *msg;
5579 struct hlua_txn *htxn;
5580
5581 MAY_LJMP(check_args(L, 2, "Info"));
5582 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5583 msg = MAY_LJMP(luaL_checkstring(L, 2));
5584 hlua_sendlog(htxn->s->be, LOG_INFO, msg);
5585 return 0;
5586}
5587
5588__LJMP static int hlua_txn_log_warning(lua_State *L)
5589{
5590 const char *msg;
5591 struct hlua_txn *htxn;
5592
5593 MAY_LJMP(check_args(L, 2, "Warning"));
5594 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5595 msg = MAY_LJMP(luaL_checkstring(L, 2));
5596 hlua_sendlog(htxn->s->be, LOG_WARNING, msg);
5597 return 0;
5598}
5599
5600__LJMP static int hlua_txn_log_alert(lua_State *L)
5601{
5602 const char *msg;
5603 struct hlua_txn *htxn;
5604
5605 MAY_LJMP(check_args(L, 2, "Alert"));
5606 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5607 msg = MAY_LJMP(luaL_checkstring(L, 2));
5608 hlua_sendlog(htxn->s->be, LOG_ALERT, msg);
5609 return 0;
5610}
5611
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005612__LJMP static int hlua_txn_set_loglevel(lua_State *L)
5613{
5614 struct hlua_txn *htxn;
5615 int ll;
5616
5617 MAY_LJMP(check_args(L, 2, "set_loglevel"));
5618 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5619 ll = MAY_LJMP(luaL_checkinteger(L, 2));
5620
5621 if (ll < 0 || ll > 7)
5622 WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
5623
5624 htxn->s->logs.level = ll;
5625 return 0;
5626}
5627
5628__LJMP static int hlua_txn_set_tos(lua_State *L)
5629{
5630 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005631 int tos;
5632
5633 MAY_LJMP(check_args(L, 2, "set_tos"));
5634 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5635 tos = MAY_LJMP(luaL_checkinteger(L, 2));
5636
Willy Tarreau1a18b542018-12-11 16:37:42 +01005637 conn_set_tos(objt_conn(htxn->s->sess->origin), tos);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005638 return 0;
5639}
5640
5641__LJMP static int hlua_txn_set_mark(lua_State *L)
5642{
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005643 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005644 int mark;
5645
5646 MAY_LJMP(check_args(L, 2, "set_mark"));
5647 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5648 mark = MAY_LJMP(luaL_checkinteger(L, 2));
5649
Lukas Tribus579e3e32019-08-11 18:03:45 +02005650 conn_set_mark(objt_conn(htxn->s->sess->origin), mark);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005651 return 0;
5652}
5653
Patrick Hemmer268a7072018-05-11 12:52:31 -04005654__LJMP static int hlua_txn_set_priority_class(lua_State *L)
5655{
5656 struct hlua_txn *htxn;
5657
5658 MAY_LJMP(check_args(L, 2, "set_priority_class"));
5659 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5660 htxn->s->priority_class = queue_limit_class(MAY_LJMP(luaL_checkinteger(L, 2)));
5661 return 0;
5662}
5663
5664__LJMP static int hlua_txn_set_priority_offset(lua_State *L)
5665{
5666 struct hlua_txn *htxn;
5667
5668 MAY_LJMP(check_args(L, 2, "set_priority_offset"));
5669 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5670 htxn->s->priority_offset = queue_limit_offset(MAY_LJMP(luaL_checkinteger(L, 2)));
5671 return 0;
5672}
5673
Christopher Faulet700d9e82020-01-31 12:21:52 +01005674/* Forward the Reply object to the client. This function converts the reply in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05005675 * HTX an push it to into the response channel. It is response to forward the
Christopher Faulet700d9e82020-01-31 12:21:52 +01005676 * message and terminate the transaction. It returns 1 on success and 0 on
5677 * error. The Reply must be on top of the stack.
5678 */
5679__LJMP static int hlua_txn_forward_reply(lua_State *L, struct stream *s)
5680{
5681 struct htx *htx;
5682 struct htx_sl *sl;
5683 struct h1m h1m;
5684 const char *status, *reason, *body;
5685 size_t status_len, reason_len, body_len;
5686 int ret, code, flags;
5687
5688 code = 200;
5689 status = "200";
5690 status_len = 3;
5691 ret = lua_getfield(L, -1, "status");
5692 if (ret == LUA_TNUMBER) {
5693 code = lua_tointeger(L, -1);
5694 status = lua_tolstring(L, -1, &status_len);
5695 }
5696 lua_pop(L, 1);
5697
5698 reason = http_get_reason(code);
5699 reason_len = strlen(reason);
5700 ret = lua_getfield(L, -1, "reason");
5701 if (ret == LUA_TSTRING)
5702 reason = lua_tolstring(L, -1, &reason_len);
5703 lua_pop(L, 1);
5704
5705 body = NULL;
5706 body_len = 0;
5707 ret = lua_getfield(L, -1, "body");
5708 if (ret == LUA_TSTRING)
5709 body = lua_tolstring(L, -1, &body_len);
5710 lua_pop(L, 1);
5711
5712 /* Prepare the response before inserting the headers */
5713 h1m_init_res(&h1m);
5714 htx = htx_from_buf(&s->res.buf);
5715 channel_htx_truncate(&s->res, htx);
5716 if (s->txn->req.flags & HTTP_MSGF_VER_11) {
5717 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
5718 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"),
5719 ist2(status, status_len), ist2(reason, reason_len));
5720 }
5721 else {
5722 flags = HTX_SL_F_IS_RESP;
5723 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"),
5724 ist2(status, status_len), ist2(reason, reason_len));
5725 }
5726 if (!sl)
5727 goto fail;
5728 sl->info.res.status = code;
5729
5730 /* Push in the stack the "headers" entry. */
5731 ret = lua_getfield(L, -1, "headers");
5732 if (ret != LUA_TTABLE)
5733 goto skip_headers;
5734
5735 lua_pushnil(L);
5736 while (lua_next(L, -2) != 0) {
5737 struct ist name, value;
5738 const char *n, *v;
5739 size_t nlen, vlen;
5740
5741 if (!lua_isstring(L, -2) || !lua_istable(L, -1)) {
5742 /* Skip element if the key is not a string or if the value is not a table */
5743 goto next_hdr;
5744 }
5745
5746 n = lua_tolstring(L, -2, &nlen);
5747 name = ist2(n, nlen);
5748 if (isteqi(name, ist("content-length"))) {
5749 /* Always skip content-length header. It will be added
5750 * later with the correct len
5751 */
5752 goto next_hdr;
5753 }
5754
5755 /* Loop on header's values */
5756 lua_pushnil(L);
5757 while (lua_next(L, -2)) {
5758 if (!lua_isstring(L, -1)) {
5759 /* Skip the value if it is not a string */
5760 goto next_value;
5761 }
5762
5763 v = lua_tolstring(L, -1, &vlen);
5764 value = ist2(v, vlen);
5765
5766 if (isteqi(name, ist("transfer-encoding")))
5767 h1_parse_xfer_enc_header(&h1m, value);
5768 if (!htx_add_header(htx, ist2(n, nlen), ist2(v, vlen)))
5769 goto fail;
5770
5771 next_value:
5772 lua_pop(L, 1);
5773 }
5774
5775 next_hdr:
5776 lua_pop(L, 1);
5777 }
5778 skip_headers:
5779 lua_pop(L, 1);
5780
5781 /* Update h1m flags: CLEN is set if CHNK is not present */
5782 if (!(h1m.flags & H1_MF_CHNK)) {
5783 const char *clen = ultoa(body_len);
5784
5785 h1m.flags |= H1_MF_CLEN;
5786 if (!htx_add_header(htx, ist("content-length"), ist(clen)))
5787 goto fail;
5788 }
5789 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
5790 h1m.flags |= H1_MF_XFER_LEN;
5791
5792 /* Update HTX start-line flags */
5793 if (h1m.flags & H1_MF_XFER_ENC)
5794 flags |= HTX_SL_F_XFER_ENC;
5795 if (h1m.flags & H1_MF_XFER_LEN) {
5796 flags |= HTX_SL_F_XFER_LEN;
5797 if (h1m.flags & H1_MF_CHNK)
5798 flags |= HTX_SL_F_CHNK;
5799 else if (h1m.flags & H1_MF_CLEN)
5800 flags |= HTX_SL_F_CLEN;
5801 if (h1m.body_len == 0)
5802 flags |= HTX_SL_F_BODYLESS;
5803 }
5804 sl->flags |= flags;
5805
5806
5807 if (!htx_add_endof(htx, HTX_BLK_EOH) ||
5808 (body_len && !htx_add_data_atonce(htx, ist2(body, body_len))) ||
5809 !htx_add_endof(htx, HTX_BLK_EOM))
5810 goto fail;
5811
5812 /* Now, forward the response and terminate the transaction */
5813 s->txn->status = code;
5814 htx_to_buf(htx, &s->res.buf);
5815 if (!http_forward_proxy_resp(s, 1))
5816 goto fail;
5817
5818 return 1;
5819
5820 fail:
5821 channel_htx_truncate(&s->res, htx);
5822 return 0;
5823}
5824
5825/* Terminate a transaction if called from a lua action. For TCP streams,
5826 * processing is just aborted. Nothing is returned to the client and all
5827 * arguments are ignored. For HTTP streams, if a reply is passed as argument, it
5828 * is forwarded to the client before terminating the transaction. On success,
5829 * the function exits with ACT_RET_DONE code. If an error occurred, it exits
5830 * with ACT_RET_ERR code. If this function is not called from a lua action, it
5831 * just exits without any processing.
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005832 */
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005833__LJMP static int hlua_txn_done(lua_State *L)
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005834{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005835 struct hlua_txn *htxn;
Christopher Faulet700d9e82020-01-31 12:21:52 +01005836 struct stream *s;
5837 int finst;
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005838
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005839 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005840
Christopher Faulet700d9e82020-01-31 12:21:52 +01005841 /* If the flags NOTERM is set, we cannot terminate the session, so we
5842 * just end the execution of the current lua code. */
5843 if (htxn->flags & HLUA_TXN_NOTERM)
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005844 WILL_LJMP(hlua_done(L));
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005845
Christopher Faulet700d9e82020-01-31 12:21:52 +01005846 s = htxn->s;
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005847 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005848 struct channel *req = &s->req;
5849 struct channel *res = &s->res;
Willy Tarreau81389672015-03-10 12:03:52 +01005850
Christopher Faulet700d9e82020-01-31 12:21:52 +01005851 channel_auto_read(req);
5852 channel_abort(req);
5853 channel_auto_close(req);
5854 channel_erase(req);
5855
5856 res->wex = tick_add_ifset(now_ms, res->wto);
5857 channel_auto_read(res);
5858 channel_auto_close(res);
5859 channel_shutr_now(res);
5860
5861 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_D);
5862 goto done;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005863 }
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02005864
Christopher Faulet700d9e82020-01-31 12:21:52 +01005865 if (lua_gettop(L) == 1 || !lua_istable(L, 2)) {
5866 /* No reply or invalid reply */
5867 s->txn->status = 0;
5868 http_reply_and_close(s, 0, NULL);
5869 }
5870 else {
5871 /* Remove extra args to have the reply on top of the stack */
5872 if (lua_gettop(L) > 2)
5873 lua_pop(L, lua_gettop(L) - 2);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005874
Christopher Faulet700d9e82020-01-31 12:21:52 +01005875 if (!hlua_txn_forward_reply(L, s)) {
5876 if (!(s->flags & SF_ERR_MASK))
5877 s->flags |= SF_ERR_PRXCOND;
5878 lua_pushinteger(L, ACT_RET_ERR);
5879 WILL_LJMP(hlua_done(L));
5880 return 0; /* Never reached */
5881 }
Christopher Faulet4d0e2632019-07-16 10:52:40 +02005882 }
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005883
Christopher Faulet700d9e82020-01-31 12:21:52 +01005884 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_H);
5885 if (htxn->dir == SMP_OPT_DIR_REQ) {
5886 /* let's log the request time */
5887 s->logs.tv_request = now;
5888 if (s->sess->fe == s->be) /* report it if the request was intercepted by the frontend */
5889 _HA_ATOMIC_ADD(&s->sess->fe->fe_counters.intercepted_req, 1);
5890 }
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005891
Christopher Faulet700d9e82020-01-31 12:21:52 +01005892 done:
5893 if (!(s->flags & SF_ERR_MASK))
5894 s->flags |= SF_ERR_LOCAL;
5895 if (!(s->flags & SF_FINST_MASK))
5896 s->flags |= finst;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005897
Christopher Faulet4ad73102020-03-05 11:07:31 +01005898 lua_pushinteger(L, ACT_RET_ABRT);
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005899 WILL_LJMP(hlua_done(L));
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005900 return 0;
5901}
5902
Christopher Faulet700d9e82020-01-31 12:21:52 +01005903/*
5904 *
5905 *
5906 * Class REPLY
5907 *
5908 *
5909 */
5910
5911/* Pushes the TXN reply onto the top of the stack. If the stask does not have a
5912 * free slots, the function fails and returns 0;
5913 */
5914static int hlua_txn_reply_new(lua_State *L)
5915{
5916 struct hlua_txn *htxn;
5917 const char *reason, *body = NULL;
5918 int ret, status;
5919
5920 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005921 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005922 hlua_pusherror(L, "txn object is not an HTTP transaction.");
5923 WILL_LJMP(lua_error(L));
5924 }
5925
5926 /* Default value */
5927 status = 200;
5928 reason = http_get_reason(status);
5929
5930 if (lua_istable(L, 2)) {
5931 /* load status and reason from the table argument at index 2 */
5932 ret = lua_getfield(L, 2, "status");
5933 if (ret == LUA_TNIL)
5934 goto reason;
5935 else if (ret != LUA_TNUMBER) {
5936 /* invalid status: ignore the reason */
5937 goto body;
5938 }
5939 status = lua_tointeger(L, -1);
5940
5941 reason:
5942 lua_pop(L, 1); /* restore the stack: remove status */
5943 ret = lua_getfield(L, 2, "reason");
5944 if (ret == LUA_TSTRING)
5945 reason = lua_tostring(L, -1);
5946
5947 body:
5948 lua_pop(L, 1); /* restore the stack: remove invalid status or reason */
5949 ret = lua_getfield(L, 2, "body");
5950 if (ret == LUA_TSTRING)
5951 body = lua_tostring(L, -1);
5952 lua_pop(L, 1); /* restore the stack: remove body */
5953 }
5954
5955 /* Create the Reply table */
5956 lua_newtable(L);
5957
5958 /* Add status element */
5959 lua_pushstring(L, "status");
5960 lua_pushinteger(L, status);
5961 lua_settable(L, -3);
5962
5963 /* Add reason element */
5964 reason = http_get_reason(status);
5965 lua_pushstring(L, "reason");
5966 lua_pushstring(L, reason);
5967 lua_settable(L, -3);
5968
5969 /* Add body element, nil if undefined */
5970 lua_pushstring(L, "body");
5971 if (body)
5972 lua_pushstring(L, body);
5973 else
5974 lua_pushnil(L);
5975 lua_settable(L, -3);
5976
5977 /* Add headers element */
5978 lua_pushstring(L, "headers");
5979 lua_newtable(L);
5980
5981 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
5982 if (lua_istable(L, 2)) {
5983 /* load headers from the table argument at index 2. If it is a table, copy it. */
5984 ret = lua_getfield(L, 2, "headers");
5985 if (ret == LUA_TTABLE) {
5986 /* stack: [ ... <headers:table>, <table> ] */
5987 lua_pushnil(L);
5988 while (lua_next(L, -2) != 0) {
5989 /* stack: [ ... <headers:table>, <table>, k, v] */
5990 if (!lua_isstring(L, -1) && !lua_istable(L, -1)) {
5991 /* invalid value type, skip it */
5992 lua_pop(L, 1);
5993 continue;
5994 }
5995
5996
5997 /* Duplicate the key and swap it with the value. */
5998 lua_pushvalue(L, -2);
5999 lua_insert(L, -2);
6000 /* stack: [ ... <headers:table>, <table>, k, k, v ] */
6001
6002 lua_newtable(L);
6003 lua_insert(L, -2);
6004 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, v ] */
6005
6006 if (lua_isstring(L, -1)) {
6007 /* push the value in the inner table */
6008 lua_rawseti(L, -2, 1);
6009 }
6010 else { /* table */
6011 lua_pushnil(L);
6012 while (lua_next(L, -2) != 0) {
6013 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2, v2 ] */
6014 if (!lua_isstring(L, -1)) {
6015 /* invalid value type, skip it*/
6016 lua_pop(L, 1);
6017 continue;
6018 }
6019 /* push the value in the inner table */
6020 lua_rawseti(L, -4, lua_rawlen(L, -4) + 1);
6021 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2 ] */
6022 }
6023 lua_pop(L, 1);
6024 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table> ] */
6025 }
6026
6027 /* push (k,v) on the stack in the headers table:
6028 * stack: [ ... <headers:table>, <table>, k, k, v ]
6029 */
6030 lua_settable(L, -5);
6031 /* stack: [ ... <headers:table>, <table>, k ] */
6032 }
6033 }
6034 lua_pop(L, 1);
6035 }
6036 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
6037 lua_settable(L, -3);
6038 /* stack: [ txn, <Arg:table>, <Reply:table> ] */
6039
6040 /* Pop a class sesison metatable and affect it to the userdata. */
6041 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_reply_ref);
6042 lua_setmetatable(L, -2);
6043 return 1;
6044}
6045
6046/* Set the reply status code, and optionally the reason. If no reason is
6047 * provided, the default one corresponding to the status code is used.
6048 */
6049__LJMP static int hlua_txn_reply_set_status(lua_State *L)
6050{
6051 int status = MAY_LJMP(luaL_checkinteger(L, 2));
6052 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
6053
6054 /* First argument (self) must be a table */
6055 luaL_checktype(L, 1, LUA_TTABLE);
6056
6057 if (status < 100 || status > 599) {
6058 lua_pushboolean(L, 0);
6059 return 1;
6060 }
6061 if (!reason)
6062 reason = http_get_reason(status);
6063
6064 lua_pushinteger(L, status);
6065 lua_setfield(L, 1, "status");
6066
6067 lua_pushstring(L, reason);
6068 lua_setfield(L, 1, "reason");
6069
6070 lua_pushboolean(L, 1);
6071 return 1;
6072}
6073
6074/* Add a header into the reply object. Each header name is associated to an
6075 * array of values in the "headers" table. If the header name is not found, a
6076 * new entry is created.
6077 */
6078__LJMP static int hlua_txn_reply_add_header(lua_State *L)
6079{
6080 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
6081 const char *value = MAY_LJMP(luaL_checkstring(L, 3));
6082 int ret;
6083
6084 /* First argument (self) must be a table */
6085 luaL_checktype(L, 1, LUA_TTABLE);
6086
6087 /* Push in the stack the "headers" entry. */
6088 ret = lua_getfield(L, 1, "headers");
6089 if (ret != LUA_TTABLE) {
6090 hlua_pusherror(L, "Reply['headers'] is expected to a an array. %s found", lua_typename(L, ret));
6091 WILL_LJMP(lua_error(L));
6092 }
6093
6094 /* check if the header is already registered. If not, register it. */
6095 ret = lua_getfield(L, -1, name);
6096 if (ret == LUA_TNIL) {
6097 /* Entry not found. */
6098 lua_pop(L, 1); /* remove the nil. The "headers" table is the top of the stack. */
6099
6100 /* Insert the new header name in the array in the top of the stack.
6101 * It left the new array in the top of the stack.
6102 */
6103 lua_newtable(L);
6104 lua_pushstring(L, name);
6105 lua_pushvalue(L, -2);
6106 lua_settable(L, -4);
6107 }
6108 else if (ret != LUA_TTABLE) {
6109 hlua_pusherror(L, "Reply['headers']['%s'] is expected to be an array. %s found", name, lua_typename(L, ret));
6110 WILL_LJMP(lua_error(L));
6111 }
6112
6113 /* Now the top od thestack is an array of values. We push
6114 * the header value as new entry.
6115 */
6116 lua_pushstring(L, value);
6117 ret = lua_rawlen(L, -2);
6118 lua_rawseti(L, -2, ret + 1);
6119
6120 lua_pushboolean(L, 1);
6121 return 1;
6122}
6123
6124/* Remove all occurrences of a given header name. */
6125__LJMP static int hlua_txn_reply_del_header(lua_State *L)
6126{
6127 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
6128 int ret;
6129
6130 /* First argument (self) must be a table */
6131 luaL_checktype(L, 1, LUA_TTABLE);
6132
6133 /* Push in the stack the "headers" entry. */
6134 ret = lua_getfield(L, 1, "headers");
6135 if (ret != LUA_TTABLE) {
6136 hlua_pusherror(L, "Reply['headers'] is expected to be an array. %s found", lua_typename(L, ret));
6137 WILL_LJMP(lua_error(L));
6138 }
6139
6140 lua_pushstring(L, name);
6141 lua_pushnil(L);
6142 lua_settable(L, -3);
6143
6144 lua_pushboolean(L, 1);
6145 return 1;
6146}
6147
6148/* Set the reply's body. Overwrite any existing entry. */
6149__LJMP static int hlua_txn_reply_set_body(lua_State *L)
6150{
6151 const char *payload = MAY_LJMP(luaL_checkstring(L, 2));
6152
6153 /* First argument (self) must be a table */
6154 luaL_checktype(L, 1, LUA_TTABLE);
6155
6156 lua_pushstring(L, payload);
6157 lua_setfield(L, 1, "body");
6158
6159 lua_pushboolean(L, 1);
6160 return 1;
6161}
6162
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01006163__LJMP static int hlua_log(lua_State *L)
6164{
6165 int level;
6166 const char *msg;
6167
6168 MAY_LJMP(check_args(L, 2, "log"));
6169 level = MAY_LJMP(luaL_checkinteger(L, 1));
6170 msg = MAY_LJMP(luaL_checkstring(L, 2));
6171
6172 if (level < 0 || level >= NB_LOG_LEVELS)
6173 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
6174
6175 hlua_sendlog(NULL, level, msg);
6176 return 0;
6177}
6178
6179__LJMP static int hlua_log_debug(lua_State *L)
6180{
6181 const char *msg;
6182
6183 MAY_LJMP(check_args(L, 1, "debug"));
6184 msg = MAY_LJMP(luaL_checkstring(L, 1));
6185 hlua_sendlog(NULL, LOG_DEBUG, msg);
6186 return 0;
6187}
6188
6189__LJMP static int hlua_log_info(lua_State *L)
6190{
6191 const char *msg;
6192
6193 MAY_LJMP(check_args(L, 1, "info"));
6194 msg = MAY_LJMP(luaL_checkstring(L, 1));
6195 hlua_sendlog(NULL, LOG_INFO, msg);
6196 return 0;
6197}
6198
6199__LJMP static int hlua_log_warning(lua_State *L)
6200{
6201 const char *msg;
6202
6203 MAY_LJMP(check_args(L, 1, "warning"));
6204 msg = MAY_LJMP(luaL_checkstring(L, 1));
6205 hlua_sendlog(NULL, LOG_WARNING, msg);
6206 return 0;
6207}
6208
6209__LJMP static int hlua_log_alert(lua_State *L)
6210{
6211 const char *msg;
6212
6213 MAY_LJMP(check_args(L, 1, "alert"));
6214 msg = MAY_LJMP(luaL_checkstring(L, 1));
6215 hlua_sendlog(NULL, LOG_ALERT, msg);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01006216 return 0;
6217}
6218
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006219__LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006220{
6221 int wakeup_ms = lua_tointeger(L, -1);
6222 if (now_ms < wakeup_ms)
Willy Tarreau9635e032018-10-16 17:52:55 +02006223 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006224 return 0;
6225}
6226
6227__LJMP static int hlua_sleep(lua_State *L)
6228{
6229 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006230 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006231
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006232 MAY_LJMP(check_args(L, 1, "sleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006233
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006234 delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006235 wakeup_ms = tick_add(now_ms, delay);
6236 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006237
Willy Tarreau9635e032018-10-16 17:52:55 +02006238 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006239 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006240}
6241
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006242__LJMP static int hlua_msleep(lua_State *L)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006243{
6244 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006245 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006246
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006247 MAY_LJMP(check_args(L, 1, "msleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006248
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006249 delay = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006250 wakeup_ms = tick_add(now_ms, delay);
6251 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006252
Willy Tarreau9635e032018-10-16 17:52:55 +02006253 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006254 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006255}
6256
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006257/* This functionis an LUA binding. it permits to give back
6258 * the hand at the HAProxy scheduler. It is used when the
6259 * LUA processing consumes a lot of time.
6260 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006261__LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006262{
6263 return 0;
6264}
6265
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006266__LJMP static int hlua_yield(lua_State *L)
6267{
Willy Tarreau9635e032018-10-16 17:52:55 +02006268 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006269 return 0;
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006270}
6271
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006272/* This function change the nice of the currently executed
6273 * task. It is used set low or high priority at the current
6274 * task.
6275 */
Willy Tarreau59551662015-03-10 14:23:13 +01006276__LJMP static int hlua_set_nice(lua_State *L)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006277{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006278 struct hlua *hlua;
6279 int nice;
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006280
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006281 MAY_LJMP(check_args(L, 1, "set_nice"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006282 nice = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006283
Thierry Fournier4234dbd2020-11-28 13:18:23 +01006284 /* Get hlua struct, or NULL if we execute from main lua state */
6285 hlua = hlua_gethlua(L);
6286
6287 /* If the task is not set, I'm in a start mode. */
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006288 if (!hlua || !hlua->task)
6289 return 0;
6290
6291 if (nice < -1024)
6292 nice = -1024;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006293 else if (nice > 1024)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006294 nice = 1024;
6295
6296 hlua->task->nice = nice;
6297 return 0;
6298}
6299
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006300/* This function is used as a callback of a task. It is called by the
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006301 * HAProxy task subsystem when the task is awaked. The LUA runtime can
6302 * return an E_AGAIN signal, the emmiter of this signal must set a
6303 * signal to wake the task.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006304 *
6305 * Task wrapper are longjmp safe because the only one Lua code
6306 * executed is the safe hlua_ctx_resume();
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006307 */
Willy Tarreau60409db2019-08-21 14:14:50 +02006308struct task *hlua_process_task(struct task *task, void *context, unsigned short state)
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006309{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006310 struct hlua *hlua = context;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006311 enum hlua_exec status;
6312
Christopher Faulet5bc99722018-04-25 10:34:45 +02006313 if (task->thread_mask == MAX_THREADS_MASK)
6314 task_set_affinity(task, tid_bit);
6315
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006316 /* If it is the first call to the task, we must initialize the
6317 * execution timeouts.
6318 */
6319 if (!HLUA_IS_RUNNING(hlua))
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006320 hlua->max_time = hlua_timeout_task;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006321
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006322 /* Execute the Lua code. */
6323 status = hlua_ctx_resume(hlua, 1);
6324
6325 switch (status) {
6326 /* finished or yield */
6327 case HLUA_E_OK:
6328 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006329 task_destroy(task);
Tim Duesterhuscd235c62018-04-24 13:56:01 +02006330 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006331 break;
6332
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006333 case HLUA_E_AGAIN: /* co process or timeout wake me later. */
Thierry FOURNIERcb146882017-12-10 17:10:57 +01006334 notification_gc(&hlua->com);
PiBa-NLfe971b32018-05-02 22:27:14 +02006335 task->expire = hlua->wake_time;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006336 break;
6337
6338 /* finished with error. */
6339 case HLUA_E_ERRMSG:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006340 SEND_ERR(NULL, "Lua task: %s.\n", lua_tostring(hlua->T, -1));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006341 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006342 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006343 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006344 break;
6345
6346 case HLUA_E_ERR:
6347 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006348 SEND_ERR(NULL, "Lua task: unknown error.\n");
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006349 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006350 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006351 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006352 break;
6353 }
Emeric Brun253e53e2017-10-17 18:58:40 +02006354 return task;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006355}
6356
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006357/* This function is an LUA binding that register LUA function to be
6358 * executed after the HAProxy configuration parsing and before the
6359 * HAProxy scheduler starts. This function expect only one LUA
6360 * argument that is a function. This function returns nothing, but
6361 * throws if an error is encountered.
6362 */
6363__LJMP static int hlua_register_init(lua_State *L)
6364{
6365 struct hlua_init_function *init;
6366 int ref;
6367
6368 MAY_LJMP(check_args(L, 1, "register_init"));
6369
6370 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6371
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006372 init = calloc(1, sizeof(*init));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006373 if (!init)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006374 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006375
6376 init->function_ref = ref;
Thierry Fournierc7492592020-11-28 23:57:24 +01006377 LIST_ADDQ(&hlua_init_functions[hlua_state_id], &init->l);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006378 return 0;
6379}
6380
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006381/* This functio is an LUA binding. It permits to register a task
6382 * executed in parallel of the main HAroxy activity. The task is
6383 * created and it is set in the HAProxy scheduler. It can be called
6384 * from the "init" section, "post init" or during the runtime.
6385 *
6386 * Lua prototype:
6387 *
6388 * <none> core.register_task(<function>)
6389 */
6390static int hlua_register_task(lua_State *L)
6391{
6392 struct hlua *hlua;
6393 struct task *task;
6394 int ref;
Thierry Fournier021d9862020-11-28 23:42:03 +01006395 int state_id;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006396
6397 MAY_LJMP(check_args(L, 1, "register_task"));
6398
6399 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6400
Thierry Fournier75fc0292020-11-28 13:18:56 +01006401 /* Get the reference state. If the reference is NULL, L is the master
6402 * state, otherwise hlua->T is.
6403 */
6404 hlua = hlua_gethlua(L);
6405 if (hlua)
Thierry Fournier021d9862020-11-28 23:42:03 +01006406 /* we are in runtime processing */
6407 state_id = hlua->state_id;
Thierry Fournier75fc0292020-11-28 13:18:56 +01006408 else
Thierry Fournier021d9862020-11-28 23:42:03 +01006409 /* we are in initialization mode */
Thierry Fournierc7492592020-11-28 23:57:24 +01006410 state_id = hlua_state_id;
Thierry Fournier75fc0292020-11-28 13:18:56 +01006411
Willy Tarreaubafbe012017-11-24 17:34:44 +01006412 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006413 if (!hlua)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006414 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006415
Thierry Fournier59f11be2020-11-29 00:37:41 +01006416 /* We are in the common lua state, execute the task anywhere,
6417 * otherwise, inherit the current thread identifier
6418 */
6419 if (state_id == 0)
6420 task = task_new(MAX_THREADS_MASK);
6421 else
6422 task = task_new(tid_bit);
Willy Tarreaue09101e2018-10-16 17:37:12 +02006423 if (!task)
6424 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
6425
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006426 task->context = hlua;
6427 task->process = hlua_process_task;
6428
Thierry Fournier021d9862020-11-28 23:42:03 +01006429 if (!hlua_ctx_init(hlua, state_id, task, 1))
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006430 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006431
6432 /* Restore the function in the stack. */
6433 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref);
6434 hlua->nargs = 0;
6435
6436 /* Schedule task. */
6437 task_schedule(task, now_ms);
6438
6439 return 0;
6440}
6441
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006442/* Wrapper called by HAProxy to execute an LUA converter. This wrapper
6443 * doesn't allow "yield" functions because the HAProxy engine cannot
6444 * resume converters.
6445 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006446static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006447{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006448 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006449 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006450 const char *error;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006451
Willy Tarreaube508f12016-03-10 11:47:01 +01006452 if (!stream)
6453 return 0;
6454
Willy Tarreau87b09662015-04-03 00:22:06 +02006455 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006456 * Lua context can be not initialized. This behavior
6457 * permits to save performances because a systematic
6458 * Lua initialization cause 5% performances loss.
6459 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006460 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006461 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006462 if (!stream->hlua) {
6463 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6464 return 0;
6465 }
Thierry Fournierc7492592020-11-28 23:57:24 +01006466 if (!hlua_ctx_init(stream->hlua, fcn_ref_to_stack_id(fcn), stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006467 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6468 return 0;
6469 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006470 }
6471
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006472 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006473 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006474
6475 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006476 if (!SET_SAFE_LJMP(stream->hlua)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006477 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6478 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006479 else
6480 error = "critical error";
6481 SEND_ERR(stream->be, "Lua converter '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006482 return 0;
6483 }
6484
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006485 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006486 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006487 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006488 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006489 return 0;
6490 }
6491
6492 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01006493 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref[stream->hlua->state_id]);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006494
6495 /* convert input sample and pust-it in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006496 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006497 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006498 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006499 return 0;
6500 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006501 hlua_smp2lua(stream->hlua->T, smp);
6502 stream->hlua->nargs = 1;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006503
6504 /* push keywords in the stack. */
6505 if (arg_p) {
6506 for (; arg_p->type != ARGT_STOP; arg_p++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006507 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006508 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006509 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006510 return 0;
6511 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006512 hlua_arg2lua(stream->hlua->T, arg_p);
6513 stream->hlua->nargs++;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006514 }
6515 }
6516
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006517 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006518 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006519
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006520 /* At this point the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006521 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006522 }
6523
6524 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006525 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006526 /* finished. */
6527 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006528 /* If the stack is empty, the function fails. */
6529 if (lua_gettop(stream->hlua->T) <= 0)
6530 return 0;
6531
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006532 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006533 hlua_lua2smp(stream->hlua->T, -1, smp);
6534 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006535 return 1;
6536
6537 /* yield. */
6538 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006539 SEND_ERR(stream->be, "Lua converter '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006540 return 0;
6541
6542 /* finished with error. */
6543 case HLUA_E_ERRMSG:
6544 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006545 SEND_ERR(stream->be, "Lua converter '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006546 fcn->name, lua_tostring(stream->hlua->T, -1));
6547 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006548 return 0;
6549
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006550 case HLUA_E_ETMOUT:
6551 SEND_ERR(stream->be, "Lua converter '%s': execution timeout.\n", fcn->name);
6552 return 0;
6553
6554 case HLUA_E_NOMEM:
6555 SEND_ERR(stream->be, "Lua converter '%s': out of memory error.\n", fcn->name);
6556 return 0;
6557
6558 case HLUA_E_YIELD:
6559 SEND_ERR(stream->be, "Lua converter '%s': yield functions like core.tcp() or core.sleep() are not allowed.\n", fcn->name);
6560 return 0;
6561
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006562 case HLUA_E_ERR:
6563 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006564 SEND_ERR(stream->be, "Lua converter '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006565 /* fall through */
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006566
6567 default:
6568 return 0;
6569 }
6570}
6571
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006572/* Wrapper called by HAProxy to execute a sample-fetch. this wrapper
6573 * doesn't allow "yield" functions because the HAProxy engine cannot
Willy Tarreaube508f12016-03-10 11:47:01 +01006574 * resume sample-fetches. This function will be called by the sample
6575 * fetch engine to call lua-based fetch operations.
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006576 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +02006577static int hlua_sample_fetch_wrapper(const struct arg *arg_p, struct sample *smp,
6578 const char *kw, void *private)
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006579{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006580 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006581 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006582 const char *error;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006583 unsigned int hflags = HLUA_TXN_NOTERM;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006584
Willy Tarreaube508f12016-03-10 11:47:01 +01006585 if (!stream)
6586 return 0;
Christopher Fauletafd8f102018-11-08 11:34:21 +01006587
Willy Tarreau87b09662015-04-03 00:22:06 +02006588 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006589 * Lua context can be not initialized. This behavior
6590 * permits to save performances because a systematic
6591 * Lua initialization cause 5% performances loss.
6592 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006593 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006594 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006595 if (!stream->hlua) {
6596 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6597 return 0;
6598 }
Thierry Fournierc7492592020-11-28 23:57:24 +01006599 if (!hlua_ctx_init(stream->hlua, fcn_ref_to_stack_id(fcn), stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006600 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6601 return 0;
6602 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006603 }
6604
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006605 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006606 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006607
6608 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006609 if (!SET_SAFE_LJMP(stream->hlua)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006610 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6611 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006612 else
6613 error = "critical error";
6614 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006615 return 0;
6616 }
6617
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006618 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006619 if (!lua_checkstack(stream->hlua->T, 2)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006620 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006621 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006622 return 0;
6623 }
6624
6625 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01006626 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref[stream->hlua->state_id]);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006627
6628 /* push arguments in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006629 if (!hlua_txn_new(stream->hlua->T, stream, smp->px, smp->opt & SMP_OPT_DIR, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006630 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006631 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006632 return 0;
6633 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006634 stream->hlua->nargs = 1;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006635
6636 /* push keywords in the stack. */
6637 for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) {
6638 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006639 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006640 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006641 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006642 return 0;
6643 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006644 hlua_arg2lua(stream->hlua->T, arg_p);
6645 stream->hlua->nargs++;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006646 }
6647
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006648 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006649 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006650
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006651 /* At this point the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006652 RESET_SAFE_LJMP(stream->hlua);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006653 }
6654
6655 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006656 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006657 /* finished. */
6658 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006659 /* If the stack is empty, the function fails. */
6660 if (lua_gettop(stream->hlua->T) <= 0)
6661 return 0;
6662
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006663 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006664 hlua_lua2smp(stream->hlua->T, -1, smp);
6665 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006666
6667 /* Set the end of execution flag. */
6668 smp->flags &= ~SMP_F_MAY_CHANGE;
6669 return 1;
6670
6671 /* yield. */
6672 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006673 SEND_ERR(smp->px, "Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006674 return 0;
6675
6676 /* finished with error. */
6677 case HLUA_E_ERRMSG:
6678 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006679 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006680 fcn->name, lua_tostring(stream->hlua->T, -1));
6681 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006682 return 0;
6683
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006684 case HLUA_E_ETMOUT:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006685 SEND_ERR(smp->px, "Lua sample-fetch '%s': execution timeout.\n", fcn->name);
6686 return 0;
6687
6688 case HLUA_E_NOMEM:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006689 SEND_ERR(smp->px, "Lua sample-fetch '%s': out of memory error.\n", fcn->name);
6690 return 0;
6691
6692 case HLUA_E_YIELD:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006693 SEND_ERR(smp->px, "Lua sample-fetch '%s': yield not allowed.\n", fcn->name);
6694 return 0;
6695
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006696 case HLUA_E_ERR:
6697 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006698 SEND_ERR(smp->px, "Lua sample-fetch '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006699 /* fall through */
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006700
6701 default:
6702 return 0;
6703 }
6704}
6705
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006706/* This function is an LUA binding used for registering
6707 * "sample-conv" functions. It expects a converter name used
6708 * in the haproxy configuration file, and an LUA function.
6709 */
6710__LJMP static int hlua_register_converters(lua_State *L)
6711{
6712 struct sample_conv_kw_list *sck;
6713 const char *name;
6714 int ref;
6715 int len;
6716 struct hlua_function *fcn;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006717 struct sample_conv *sc;
6718 struct buffer *trash;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006719
6720 MAY_LJMP(check_args(L, 2, "register_converters"));
6721
6722 /* First argument : converter name. */
6723 name = MAY_LJMP(luaL_checkstring(L, 1));
6724
6725 /* Second argument : lua function. */
6726 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6727
Thierry Fournierf67442e2020-11-28 20:41:07 +01006728 /* Check if the converter is already registered */
6729 trash = get_trash_chunk();
6730 chunk_printf(trash, "lua.%s", name);
6731 sc = find_sample_conv(trash->area, trash->data);
6732 if (sc != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01006733 fcn = sc->private;
6734 if (fcn->function_ref[hlua_state_id] != -1) {
6735 ha_warning("Trying to register converter 'lua.%s' more than once. "
6736 "This will become a hard error in version 2.5.\n", name);
6737 }
6738 fcn->function_ref[hlua_state_id] = ref;
6739 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006740 }
6741
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006742 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006743 sck = calloc(1, sizeof(*sck) + sizeof(struct sample_conv) * 2);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006744 if (!sck)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006745 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01006746 fcn = new_hlua_function();
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006747 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006748 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006749
6750 /* Fill fcn. */
6751 fcn->name = strdup(name);
6752 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006753 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournierc7492592020-11-28 23:57:24 +01006754 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006755
6756 /* List head */
6757 sck->list.n = sck->list.p = NULL;
6758
6759 /* converter keyword. */
6760 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006761 sck->kw[0].kw = calloc(1, len);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006762 if (!sck->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006763 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006764
6765 snprintf((char *)sck->kw[0].kw, len, "lua.%s", name);
6766 sck->kw[0].process = hlua_sample_conv_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006767 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 +01006768 sck->kw[0].val_args = NULL;
6769 sck->kw[0].in_type = SMP_T_STR;
6770 sck->kw[0].out_type = SMP_T_STR;
6771 sck->kw[0].private = fcn;
6772
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006773 /* Register this new converter */
6774 sample_register_convs(sck);
6775
6776 return 0;
6777}
6778
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006779/* This function is an LUA binding used for registering
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006780 * "sample-fetch" functions. It expects a converter name used
6781 * in the haproxy configuration file, and an LUA function.
6782 */
6783__LJMP static int hlua_register_fetches(lua_State *L)
6784{
6785 const char *name;
6786 int ref;
6787 int len;
6788 struct sample_fetch_kw_list *sfk;
6789 struct hlua_function *fcn;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006790 struct sample_fetch *sf;
6791 struct buffer *trash;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006792
6793 MAY_LJMP(check_args(L, 2, "register_fetches"));
6794
6795 /* First argument : sample-fetch name. */
6796 name = MAY_LJMP(luaL_checkstring(L, 1));
6797
6798 /* Second argument : lua function. */
6799 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6800
Thierry Fournierf67442e2020-11-28 20:41:07 +01006801 /* Check if the sample-fetch is already registered */
6802 trash = get_trash_chunk();
6803 chunk_printf(trash, "lua.%s", name);
6804 sf = find_sample_fetch(trash->area, trash->data);
6805 if (sf != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01006806 fcn = sf->private;
6807 if (fcn->function_ref[hlua_state_id] != -1) {
6808 ha_warning("Trying to register sample-fetch 'lua.%s' more than once. "
6809 "This will become a hard error in version 2.5.\n", name);
6810 }
6811 fcn->function_ref[hlua_state_id] = ref;
6812 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01006813 }
6814
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006815 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006816 sfk = calloc(1, sizeof(*sfk) + sizeof(struct sample_fetch) * 2);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006817 if (!sfk)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006818 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01006819 fcn = new_hlua_function();
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006820 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006821 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006822
6823 /* Fill fcn. */
6824 fcn->name = strdup(name);
6825 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006826 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournierc7492592020-11-28 23:57:24 +01006827 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006828
6829 /* List head */
6830 sfk->list.n = sfk->list.p = NULL;
6831
6832 /* sample-fetch keyword. */
6833 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006834 sfk->kw[0].kw = calloc(1, len);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006835 if (!sfk->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006836 return luaL_error(L, "Lua out of memory error.");
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006837
6838 snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name);
6839 sfk->kw[0].process = hlua_sample_fetch_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006840 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 +01006841 sfk->kw[0].val_args = NULL;
6842 sfk->kw[0].out_type = SMP_T_STR;
6843 sfk->kw[0].use = SMP_USE_HTTP_ANY;
6844 sfk->kw[0].val = 0;
6845 sfk->kw[0].private = fcn;
6846
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006847 /* Register this new fetch. */
6848 sample_register_fetches(sfk);
6849
6850 return 0;
6851}
6852
Christopher Faulet501465d2020-02-26 14:54:16 +01006853/* This function is a lua binding to set the wake_time.
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006854 */
Christopher Faulet501465d2020-02-26 14:54:16 +01006855__LJMP static int hlua_set_wake_time(lua_State *L)
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006856{
Thierry Fournier4234dbd2020-11-28 13:18:23 +01006857 struct hlua *hlua;
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006858 unsigned int delay;
6859 unsigned int wakeup_ms;
6860
Thierry Fournier4234dbd2020-11-28 13:18:23 +01006861 /* Get hlua struct, or NULL if we execute from main lua state */
6862 hlua = hlua_gethlua(L);
6863 if (!hlua) {
6864 return 0;
6865 }
6866
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006867 MAY_LJMP(check_args(L, 1, "wake_time"));
6868
6869 delay = MAY_LJMP(luaL_checkinteger(L, 1));
6870 wakeup_ms = tick_add(now_ms, delay);
6871 hlua->wake_time = wakeup_ms;
6872 return 0;
6873}
6874
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006875/* This function is a wrapper to execute each LUA function declared as an action
6876 * wrapper during the initialisation period. This function may return any
6877 * ACT_RET_* value. On error ACT_RET_CONT is returned and the action is
6878 * ignored. If the lua action yields, ACT_RET_YIELD is returned. On success, the
6879 * return value is the first element on the stack.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006880 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006881static enum act_return hlua_action(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +02006882 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006883{
6884 char **arg;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006885 unsigned int hflags = 0;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006886 int dir, act_ret = ACT_RET_CONT;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006887 const char *error;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006888
6889 switch (rule->from) {
Christopher Fauletd8f0e072020-02-25 09:45:51 +01006890 case ACT_F_TCP_REQ_CNT: dir = SMP_OPT_DIR_REQ; break;
6891 case ACT_F_TCP_RES_CNT: dir = SMP_OPT_DIR_RES; break;
6892 case ACT_F_HTTP_REQ: dir = SMP_OPT_DIR_REQ; break;
6893 case ACT_F_HTTP_RES: dir = SMP_OPT_DIR_RES; break;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006894 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006895 SEND_ERR(px, "Lua: internal error while execute action.\n");
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006896 goto end;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006897 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006898
Willy Tarreau87b09662015-04-03 00:22:06 +02006899 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006900 * Lua context can be not initialized. This behavior
6901 * permits to save performances because a systematic
6902 * Lua initialization cause 5% performances loss.
6903 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006904 if (!s->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006905 s->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006906 if (!s->hlua) {
6907 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006908 rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006909 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006910 }
Thierry Fournierc7492592020-11-28 23:57:24 +01006911 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 +01006912 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006913 rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006914 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006915 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006916 }
6917
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006918 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006919 if (!HLUA_IS_RUNNING(s->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006920
6921 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006922 if (!SET_SAFE_LJMP(s->hlua)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006923 if (lua_type(s->hlua->T, -1) == LUA_TSTRING)
6924 error = lua_tostring(s->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006925 else
6926 error = "critical error";
6927 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006928 rule->arg.hlua_rule->fcn->name, error);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006929 goto end;
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006930 }
6931
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006932 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006933 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006934 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006935 rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006936 RESET_SAFE_LJMP(s->hlua);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006937 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006938 }
6939
6940 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01006941 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 +01006942
Willy Tarreau87b09662015-04-03 00:22:06 +02006943 /* Create and and push object stream in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006944 if (!hlua_txn_new(s->hlua->T, s, px, dir, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006945 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006946 rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006947 RESET_SAFE_LJMP(s->hlua);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006948 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006949 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006950 s->hlua->nargs = 1;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006951
6952 /* push keywords in the stack. */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006953 for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006954 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006955 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01006956 rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006957 RESET_SAFE_LJMP(s->hlua);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006958 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006959 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006960 lua_pushstring(s->hlua->T, *arg);
6961 s->hlua->nargs++;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006962 }
6963
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006964 /* Now the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01006965 RESET_SAFE_LJMP(s->hlua);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006966
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006967 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006968 s->hlua->max_time = hlua_timeout_session;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006969 }
6970
6971 /* Execute the function. */
Christopher Faulet105ba6c2019-12-18 14:41:51 +01006972 switch (hlua_ctx_resume(s->hlua, !(flags & ACT_OPT_FINAL))) {
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006973 /* finished. */
6974 case HLUA_E_OK:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006975 /* Catch the return value */
6976 if (lua_gettop(s->hlua->T) > 0)
6977 act_ret = lua_tointeger(s->hlua->T, -1);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006978
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006979 /* Set timeout in the required channel. */
Christopher Faulet498c4832020-07-28 11:59:58 +02006980 if (act_ret == ACT_RET_YIELD) {
6981 if (flags & ACT_OPT_FINAL)
6982 goto err_yield;
6983
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006984 if (dir == SMP_OPT_DIR_REQ)
6985 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
6986 s->hlua->wake_time);
6987 else
6988 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
6989 s->hlua->wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006990 }
6991 goto end;
6992
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006993 /* yield. */
6994 case HLUA_E_AGAIN:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006995 /* Set timeout in the required channel. */
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006996 if (dir == SMP_OPT_DIR_REQ)
6997 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
6998 s->hlua->wake_time);
6999 else
7000 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
7001 s->hlua->wake_time);
7002
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007003 /* Some actions can be wake up when a "write" event
7004 * is detected on a response channel. This is useful
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007005 * only for actions targeted on the requests.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007006 */
Christopher Faulet51fa3582019-07-26 14:54:52 +02007007 if (HLUA_IS_WAKERESWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007008 s->res.flags |= CF_WAKE_WRITE;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01007009 if (HLUA_IS_WAKEREQWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007010 s->req.flags |= CF_WAKE_WRITE;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007011 act_ret = ACT_RET_YIELD;
7012 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007013
7014 /* finished with error. */
7015 case HLUA_E_ERRMSG:
7016 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02007017 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007018 rule->arg.hlua_rule->fcn->name, lua_tostring(s->hlua->T, -1));
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01007019 lua_pop(s->hlua->T, 1);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007020 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007021
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007022 case HLUA_E_ETMOUT:
Thierry Fournierad5345f2020-11-29 02:05:57 +01007023 SEND_ERR(px, "Lua function '%s': execution timeout.\n", rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007024 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007025
7026 case HLUA_E_NOMEM:
Thierry Fournierad5345f2020-11-29 02:05:57 +01007027 SEND_ERR(px, "Lua function '%s': out of memory error.\n", rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007028 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007029
7030 case HLUA_E_YIELD:
Christopher Faulet498c4832020-07-28 11:59:58 +02007031 err_yield:
7032 act_ret = ACT_RET_CONT;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007033 SEND_ERR(px, "Lua function '%s': aborting Lua processing on expired timeout.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007034 rule->arg.hlua_rule->fcn->name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007035 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007036
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007037 case HLUA_E_ERR:
7038 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02007039 SEND_ERR(px, "Lua function '%s' return an unknown error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007040 rule->arg.hlua_rule->fcn->name);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007041
7042 default:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007043 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007044 }
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007045
7046 end:
Christopher Faulet2361fd92020-07-30 10:40:58 +02007047 if (act_ret != ACT_RET_YIELD && s->hlua)
Christopher Faulet8f587ea2020-07-28 12:01:55 +02007048 s->hlua->wake_time = TICK_ETERNITY;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01007049 return act_ret;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007050}
7051
Olivier Houchard9f6af332018-05-25 14:04:04 +02007052struct task *hlua_applet_wakeup(struct task *t, void *context, unsigned short state)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007053{
Olivier Houchard9f6af332018-05-25 14:04:04 +02007054 struct appctx *ctx = context;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007055
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007056 appctx_wakeup(ctx);
Willy Tarreaud9587412017-08-23 16:07:33 +02007057 t->expire = TICK_ETERNITY;
Willy Tarreaud1aa41f2017-07-21 16:41:56 +02007058 return t;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007059}
7060
7061static int hlua_applet_tcp_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7062{
7063 struct stream_interface *si = ctx->owner;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007064 struct hlua *hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007065 struct task *task;
7066 char **arg;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007067 const char *error;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007068
Willy Tarreaubafbe012017-11-24 17:34:44 +01007069 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007070 if (!hlua) {
7071 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007072 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007073 return 0;
7074 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007075 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007076 ctx->ctx.hlua_apptcp.hlua = hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007077 ctx->ctx.hlua_apptcp.flags = 0;
7078
7079 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007080 task = task_new(tid_bit);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007081 if (!task) {
7082 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007083 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007084 return 0;
7085 }
7086 task->nice = 0;
7087 task->context = ctx;
7088 task->process = hlua_applet_wakeup;
7089 ctx->ctx.hlua_apptcp.task = task;
7090
7091 /* In the execution wrappers linked with a stream, the
7092 * Lua context can be not initialized. This behavior
7093 * permits to save performances because a systematic
7094 * Lua initialization cause 5% performances loss.
7095 */
Thierry Fournierc7492592020-11-28 23:57:24 +01007096 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 +02007097 SEND_ERR(px, "Lua applet tcp '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007098 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007099 return 0;
7100 }
7101
7102 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007103 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007104
7105 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007106 if (!SET_SAFE_LJMP(hlua)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007107 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7108 error = lua_tostring(hlua->T, -1);
7109 else
7110 error = "critical error";
7111 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007112 ctx->rule->arg.hlua_rule->fcn->name, error);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007113 return 0;
7114 }
7115
7116 /* Check stack available size. */
7117 if (!lua_checkstack(hlua->T, 1)) {
7118 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007119 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007120 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007121 return 0;
7122 }
7123
7124 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01007125 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007126
7127 /* Create and and push object stream in the stack. */
7128 if (!hlua_applet_tcp_new(hlua->T, ctx)) {
7129 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007130 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007131 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007132 return 0;
7133 }
7134 hlua->nargs = 1;
7135
7136 /* push keywords in the stack. */
7137 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7138 if (!lua_checkstack(hlua->T, 1)) {
7139 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007140 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007141 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007142 return 0;
7143 }
7144 lua_pushstring(hlua->T, *arg);
7145 hlua->nargs++;
7146 }
7147
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007148 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007149
7150 /* Wakeup the applet ASAP. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007151 si_cant_get(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01007152 si_rx_endp_more(si);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007153
7154 return 1;
7155}
7156
Willy Tarreau60409db2019-08-21 14:14:50 +02007157void hlua_applet_tcp_fct(struct appctx *ctx)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007158{
7159 struct stream_interface *si = ctx->owner;
7160 struct stream *strm = si_strm(si);
7161 struct channel *res = si_ic(si);
7162 struct act_rule *rule = ctx->rule;
7163 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007164 struct hlua *hlua = ctx->ctx.hlua_apptcp.hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007165
7166 /* The applet execution is already done. */
Olivier Houchard594c8c52018-08-28 14:41:31 +02007167 if (ctx->ctx.hlua_apptcp.flags & APPLET_DONE) {
7168 /* eat the whole request */
7169 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007170 return;
Olivier Houchard594c8c52018-08-28 14:41:31 +02007171 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007172
7173 /* If the stream is disconnect or closed, ldo nothing. */
7174 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7175 return;
7176
7177 /* Execute the function. */
7178 switch (hlua_ctx_resume(hlua, 1)) {
7179 /* finished. */
7180 case HLUA_E_OK:
7181 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7182
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007183 /* eat the whole request */
Willy Tarreaua79021a2018-06-15 18:07:57 +02007184 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007185 res->flags |= CF_READ_NULL;
7186 si_shutr(si);
7187 return;
7188
7189 /* yield. */
7190 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01007191 if (hlua->wake_time != TICK_ETERNITY)
7192 task_schedule(ctx->ctx.hlua_apptcp.task, hlua->wake_time);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007193 return;
7194
7195 /* finished with error. */
7196 case HLUA_E_ERRMSG:
7197 /* Display log. */
7198 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007199 rule->arg.hlua_rule->fcn->name, lua_tostring(hlua->T, -1));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007200 lua_pop(hlua->T, 1);
7201 goto error;
7202
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007203 case HLUA_E_ETMOUT:
7204 SEND_ERR(px, "Lua applet tcp '%s': execution timeout.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007205 rule->arg.hlua_rule->fcn->name);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007206 goto error;
7207
7208 case HLUA_E_NOMEM:
7209 SEND_ERR(px, "Lua applet tcp '%s': out of memory error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007210 rule->arg.hlua_rule->fcn->name);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007211 goto error;
7212
7213 case HLUA_E_YIELD: /* unexpected */
7214 SEND_ERR(px, "Lua applet tcp '%s': yield not allowed.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007215 rule->arg.hlua_rule->fcn->name);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007216 goto error;
7217
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007218 case HLUA_E_ERR:
7219 /* Display log. */
7220 SEND_ERR(px, "Lua applet tcp '%s' return an unknown error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007221 rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007222 goto error;
7223
7224 default:
7225 goto error;
7226 }
7227
7228error:
7229
7230 /* For all other cases, just close the stream. */
7231 si_shutw(si);
7232 si_shutr(si);
7233 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7234}
7235
7236static void hlua_applet_tcp_release(struct appctx *ctx)
7237{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007238 task_destroy(ctx->ctx.hlua_apptcp.task);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007239 ctx->ctx.hlua_apptcp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007240 hlua_ctx_destroy(ctx->ctx.hlua_apptcp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007241 ctx->ctx.hlua_apptcp.hlua = NULL;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007242}
7243
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007244/* The function returns 1 if the initialisation is complete, 0 if
7245 * an errors occurs and -1 if more data are required for initializing
7246 * the applet.
7247 */
7248static int hlua_applet_http_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7249{
7250 struct stream_interface *si = ctx->owner;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007251 struct http_txn *txn;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007252 struct hlua *hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007253 char **arg;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007254 struct task *task;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007255 const char *error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007256
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007257 txn = strm->txn;
Willy Tarreaubafbe012017-11-24 17:34:44 +01007258 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007259 if (!hlua) {
7260 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007261 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007262 return 0;
7263 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007264 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007265 ctx->ctx.hlua_apphttp.hlua = hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007266 ctx->ctx.hlua_apphttp.left_bytes = -1;
7267 ctx->ctx.hlua_apphttp.flags = 0;
7268
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01007269 if (txn->req.flags & HTTP_MSGF_VER_11)
7270 ctx->ctx.hlua_apphttp.flags |= APPLET_HTTP11;
7271
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007272 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007273 task = task_new(tid_bit);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007274 if (!task) {
7275 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007276 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007277 return 0;
7278 }
7279 task->nice = 0;
7280 task->context = ctx;
7281 task->process = hlua_applet_wakeup;
7282 ctx->ctx.hlua_apphttp.task = task;
7283
7284 /* In the execution wrappers linked with a stream, the
7285 * Lua context can be not initialized. This behavior
7286 * permits to save performances because a systematic
7287 * Lua initialization cause 5% performances loss.
7288 */
Thierry Fournierc7492592020-11-28 23:57:24 +01007289 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 +02007290 SEND_ERR(px, "Lua applet http '%s': can't initialize Lua context.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007291 ctx->rule->arg.hlua_rule->fcn->name);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007292 return 0;
7293 }
7294
7295 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007296 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007297
7298 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007299 if (!SET_SAFE_LJMP(hlua)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007300 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7301 error = lua_tostring(hlua->T, -1);
7302 else
7303 error = "critical error";
7304 SEND_ERR(px, "Lua applet http '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007305 ctx->rule->arg.hlua_rule->fcn->name, error);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007306 return 0;
7307 }
7308
7309 /* Check stack available size. */
7310 if (!lua_checkstack(hlua->T, 1)) {
7311 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007312 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007313 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007314 return 0;
7315 }
7316
7317 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01007318 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007319
7320 /* Create and and push object stream in the stack. */
7321 if (!hlua_applet_http_new(hlua->T, ctx)) {
7322 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007323 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007324 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007325 return 0;
7326 }
7327 hlua->nargs = 1;
7328
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007329 /* push keywords in the stack. */
7330 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7331 if (!lua_checkstack(hlua->T, 1)) {
7332 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007333 ctx->rule->arg.hlua_rule->fcn->name);
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007334 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007335 return 0;
7336 }
7337 lua_pushstring(hlua->T, *arg);
7338 hlua->nargs++;
7339 }
7340
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007341 RESET_SAFE_LJMP(hlua);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007342
7343 /* Wakeup the applet when data is ready for read. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007344 si_cant_get(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007345
7346 return 1;
7347}
7348
Willy Tarreau60409db2019-08-21 14:14:50 +02007349void hlua_applet_http_fct(struct appctx *ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007350{
7351 struct stream_interface *si = ctx->owner;
7352 struct stream *strm = si_strm(si);
7353 struct channel *req = si_oc(si);
7354 struct channel *res = si_ic(si);
7355 struct act_rule *rule = ctx->rule;
7356 struct proxy *px = strm->be;
7357 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
7358 struct htx *req_htx, *res_htx;
7359
7360 res_htx = htx_from_buf(&res->buf);
7361
7362 /* If the stream is disconnect or closed, ldo nothing. */
7363 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7364 goto out;
7365
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007366 /* Check if the input buffer is available. */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007367 if (!b_size(&res->buf)) {
7368 si_rx_room_blk(si);
7369 goto out;
7370 }
7371 /* check that the output is not closed */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007372 if (res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_SHUTR))
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007373 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7374
7375 /* Set the currently running flag. */
7376 if (!HLUA_IS_RUNNING(hlua) &&
7377 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7378 struct htx_blk *blk;
7379 size_t count = co_data(req);
7380
7381 if (!count) {
7382 si_cant_get(si);
7383 goto out;
7384 }
7385
7386 /* We need to flush the request header. This left the body for
7387 * the Lua.
7388 */
7389 req_htx = htx_from_buf(&req->buf);
Christopher Fauleta3f15502019-05-13 15:27:23 +02007390 blk = htx_get_first_blk(req_htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007391 while (count && blk) {
7392 enum htx_blk_type type = htx_get_blk_type(blk);
7393 uint32_t sz = htx_get_blksz(blk);
7394
7395 if (sz > count) {
7396 si_cant_get(si);
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007397 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007398 goto out;
7399 }
7400
7401 count -= sz;
7402 co_set_data(req, co_data(req) - sz);
7403 blk = htx_remove_blk(req_htx, blk);
7404
7405 if (type == HTX_BLK_EOH)
7406 break;
7407 }
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007408 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007409 }
7410
7411 /* Executes The applet if it is not done. */
7412 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7413
7414 /* Execute the function. */
7415 switch (hlua_ctx_resume(hlua, 1)) {
7416 /* finished. */
7417 case HLUA_E_OK:
7418 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7419 break;
7420
7421 /* yield. */
7422 case HLUA_E_AGAIN:
7423 if (hlua->wake_time != TICK_ETERNITY)
7424 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007425 goto out;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007426
7427 /* finished with error. */
7428 case HLUA_E_ERRMSG:
7429 /* Display log. */
7430 SEND_ERR(px, "Lua applet http '%s': %s.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007431 rule->arg.hlua_rule->fcn->name, lua_tostring(hlua->T, -1));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007432 lua_pop(hlua->T, 1);
7433 goto error;
7434
7435 case HLUA_E_ETMOUT:
7436 SEND_ERR(px, "Lua applet http '%s': execution timeout.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007437 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007438 goto error;
7439
7440 case HLUA_E_NOMEM:
7441 SEND_ERR(px, "Lua applet http '%s': out of memory error.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007442 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007443 goto error;
7444
7445 case HLUA_E_YIELD: /* unexpected */
7446 SEND_ERR(px, "Lua applet http '%s': yield not allowed.\n",
Thierry Fournierad5345f2020-11-29 02:05:57 +01007447 rule->arg.hlua_rule->fcn->name);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007448 goto error;
7449
7450 case HLUA_E_ERR:
7451 /* Display log. */
7452 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\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 default:
7457 goto error;
7458 }
7459 }
7460
7461 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007462 if (ctx->ctx.hlua_apphttp.flags & APPLET_RSP_SENT)
7463 goto done;
7464
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007465 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT))
7466 goto error;
7467
Christopher Faulet54b5e212019-06-04 10:08:28 +02007468 /* Don't add TLR because mux-h1 will take care of it */
Willy Tarreauf1ea47d2020-07-23 06:53:27 +02007469 res_htx->flags |= HTX_FL_EOI; /* no more data are expected. Only EOM remains to add now */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007470 if (!htx_add_endof(res_htx, HTX_BLK_EOM)) {
7471 si_rx_room_blk(si);
7472 goto out;
7473 }
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007474 channel_add_input(res, 1);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007475 strm->txn->status = ctx->ctx.hlua_apphttp.status;
7476 ctx->ctx.hlua_apphttp.flags |= APPLET_RSP_SENT;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007477 }
7478
7479 done:
7480 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007481 if (!(res->flags & CF_SHUTR)) {
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007482 res->flags |= CF_READ_NULL;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007483 si_shutr(si);
7484 }
7485
7486 /* eat the whole request */
7487 if (co_data(req)) {
7488 req_htx = htx_from_buf(&req->buf);
7489 co_htx_skip(req, req_htx, co_data(req));
7490 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007491 }
7492 }
7493
7494 out:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007495 htx_to_buf(res_htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007496 return;
7497
7498 error:
7499
7500 /* If we are in HTTP mode, and we are not send any
7501 * data, return a 500 server error in best effort:
7502 * if there is no room available in the buffer,
7503 * just close the connection.
7504 */
7505 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
Christopher Fauletf7346382019-07-17 22:02:08 +02007506 struct buffer *err = &http_err_chunks[HTTP_ERR_500];
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007507
7508 channel_erase(res);
7509 res->buf.data = b_data(err);
7510 memcpy(res->buf.area, b_head(err), b_data(err));
7511 res_htx = htx_from_buf(&res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007512 channel_add_input(res, res_htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007513 }
7514 if (!(strm->flags & SF_ERR_MASK))
7515 strm->flags |= SF_ERR_RESOURCE;
7516 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7517 goto done;
7518}
7519
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007520static void hlua_applet_http_release(struct appctx *ctx)
7521{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007522 task_destroy(ctx->ctx.hlua_apphttp.task);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007523 ctx->ctx.hlua_apphttp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007524 hlua_ctx_destroy(ctx->ctx.hlua_apphttp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007525 ctx->ctx.hlua_apphttp.hlua = NULL;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007526}
7527
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007528/* global {tcp|http}-request parser. Return ACT_RET_PRS_OK in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007529 * success case, else return ACT_RET_PRS_ERR.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007530 *
7531 * This function can fail with an abort() due to an Lua critical error.
7532 * We are in the configuration parsing process of HAProxy, this abort() is
7533 * tolerated.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007534 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007535static enum act_parse_ret action_register_lua(const char **args, int *cur_arg, struct proxy *px,
7536 struct act_rule *rule, char **err)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007537{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007538 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007539 int i;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007540
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007541 /* Memory for the rule. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007542 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007543 if (!rule->arg.hlua_rule) {
7544 memprintf(err, "out of memory error");
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007545 return ACT_RET_PRS_ERR;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007546 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007547
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007548 /* Memory for arguments. */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02007549 rule->arg.hlua_rule->args = calloc(fcn->nargs + 1,
7550 sizeof(*rule->arg.hlua_rule->args));
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007551 if (!rule->arg.hlua_rule->args) {
7552 memprintf(err, "out of memory error");
7553 return ACT_RET_PRS_ERR;
7554 }
7555
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007556 /* Reference the Lua function and store the reference. */
Thierry Fournierad5345f2020-11-29 02:05:57 +01007557 rule->arg.hlua_rule->fcn = fcn;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007558
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007559 /* Expect some arguments */
7560 for (i = 0; i < fcn->nargs; i++) {
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007561 if (*args[*cur_arg] == '\0') {
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007562 memprintf(err, "expect %d arguments", fcn->nargs);
7563 return ACT_RET_PRS_ERR;
7564 }
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007565 rule->arg.hlua_rule->args[i] = strdup(args[*cur_arg]);
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007566 if (!rule->arg.hlua_rule->args[i]) {
7567 memprintf(err, "out of memory error");
7568 return ACT_RET_PRS_ERR;
7569 }
7570 (*cur_arg)++;
7571 }
7572 rule->arg.hlua_rule->args[i] = NULL;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007573
Thierry FOURNIER42148732015-09-02 17:17:33 +02007574 rule->action = ACT_CUSTOM;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007575 rule->action_ptr = hlua_action;
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007576 return ACT_RET_PRS_OK;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007577}
7578
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007579static enum act_parse_ret action_register_service_http(const char **args, int *cur_arg, struct proxy *px,
7580 struct act_rule *rule, char **err)
7581{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007582 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007583
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007584 /* HTTP applets are forbidden in tcp-request rules.
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007585 * HTTP applet request requires everything initialized by
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007586 * "http_process_request" (analyzer flag AN_REQ_HTTP_INNER).
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007587 * The applet will be immediately initialized, but its before
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007588 * the call of this analyzer.
7589 */
7590 if (rule->from != ACT_F_HTTP_REQ) {
7591 memprintf(err, "HTTP applets are forbidden from 'tcp-request' rulesets");
7592 return ACT_RET_PRS_ERR;
7593 }
7594
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007595 /* Memory for the rule. */
7596 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7597 if (!rule->arg.hlua_rule) {
7598 memprintf(err, "out of memory error");
7599 return ACT_RET_PRS_ERR;
7600 }
7601
7602 /* Reference the Lua function and store the reference. */
Thierry Fournierad5345f2020-11-29 02:05:57 +01007603 rule->arg.hlua_rule->fcn = fcn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007604
7605 /* TODO: later accept arguments. */
7606 rule->arg.hlua_rule->args = NULL;
7607
7608 /* Add applet pointer in the rule. */
7609 rule->applet.obj_type = OBJ_TYPE_APPLET;
7610 rule->applet.name = fcn->name;
7611 rule->applet.init = hlua_applet_http_init;
7612 rule->applet.fct = hlua_applet_http_fct;
7613 rule->applet.release = hlua_applet_http_release;
7614 rule->applet.timeout = hlua_timeout_applet;
7615
7616 return ACT_RET_PRS_OK;
7617}
7618
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007619/* This function is an LUA binding used for registering
7620 * "sample-conv" functions. It expects a converter name used
7621 * in the haproxy configuration file, and an LUA function.
7622 */
7623__LJMP static int hlua_register_action(lua_State *L)
7624{
7625 struct action_kw_list *akl;
7626 const char *name;
7627 int ref;
7628 int len;
7629 struct hlua_function *fcn;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007630 int nargs;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007631 struct buffer *trash;
7632 struct action_kw *akw;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007633
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007634 /* Initialise the number of expected arguments at 0. */
7635 nargs = 0;
7636
7637 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
7638 WILL_LJMP(luaL_error(L, "'register_action' needs between 3 and 4 arguments"));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007639
7640 /* First argument : converter name. */
7641 name = MAY_LJMP(luaL_checkstring(L, 1));
7642
7643 /* Second argument : environment. */
7644 if (lua_type(L, 2) != LUA_TTABLE)
7645 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7646
7647 /* Third argument : lua function. */
7648 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7649
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007650 /* Fourth argument : number of mandatory arguments expected on the configuration line. */
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007651 if (lua_gettop(L) >= 4)
7652 nargs = MAY_LJMP(luaL_checkinteger(L, 4));
7653
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007654 /* browse the second argument as an array. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007655 lua_pushnil(L);
7656 while (lua_next(L, 2) != 0) {
7657 if (lua_type(L, -1) != LUA_TSTRING)
7658 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7659
Thierry Fournierf67442e2020-11-28 20:41:07 +01007660 /* Check if action exists */
7661 trash = get_trash_chunk();
7662 chunk_printf(trash, "lua.%s", name);
7663 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0) {
7664 akw = tcp_req_cont_action(trash->area);
7665 } else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0) {
7666 akw = tcp_res_cont_action(trash->area);
7667 } else if (strcmp(lua_tostring(L, -1), "http-req") == 0) {
7668 akw = action_http_req_custom(trash->area);
7669 } else if (strcmp(lua_tostring(L, -1), "http-res") == 0) {
7670 akw = action_http_res_custom(trash->area);
7671 } else {
7672 akw = NULL;
7673 }
7674 if (akw != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01007675 fcn = akw->private;
7676 if (fcn->function_ref[hlua_state_id] != -1) {
7677 ha_warning("Trying to register action 'lua.%s' more than once. "
7678 "This will become a hard error in version 2.5.\n", name);
7679 }
7680 fcn->function_ref[hlua_state_id] = ref;
7681
7682 /* pop the environment string. */
7683 lua_pop(L, 1);
7684 continue;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007685 }
7686
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007687 /* Check required environment. Only accepted "http" or "tcp". */
7688 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007689 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007690 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007691 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01007692 fcn = new_hlua_function();
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007693 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007694 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007695
7696 /* Fill fcn. */
7697 fcn->name = strdup(name);
7698 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007699 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournierc7492592020-11-28 23:57:24 +01007700 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007701
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007702 /* Set the expected number od arguments. */
7703 fcn->nargs = nargs;
7704
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007705 /* List head */
7706 akl->list.n = akl->list.p = NULL;
7707
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007708 /* action keyword. */
7709 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007710 akl->kw[0].kw = calloc(1, len);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007711 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007712 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007713
7714 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7715
7716 akl->kw[0].match_pfx = 0;
7717 akl->kw[0].private = fcn;
7718 akl->kw[0].parse = action_register_lua;
7719
7720 /* select the action registering point. */
7721 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0)
7722 tcp_req_cont_keywords_register(akl);
7723 else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0)
7724 tcp_res_cont_keywords_register(akl);
7725 else if (strcmp(lua_tostring(L, -1), "http-req") == 0)
7726 http_req_keywords_register(akl);
7727 else if (strcmp(lua_tostring(L, -1), "http-res") == 0)
7728 http_res_keywords_register(akl);
7729 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007730 WILL_LJMP(luaL_error(L, "Lua action environment '%s' is unknown. "
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007731 "'tcp-req', 'tcp-res', 'http-req' or 'http-res' "
7732 "are expected.", lua_tostring(L, -1)));
7733
7734 /* pop the environment string. */
7735 lua_pop(L, 1);
7736 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007737 return ACT_RET_PRS_OK;
7738}
7739
7740static enum act_parse_ret action_register_service_tcp(const char **args, int *cur_arg, struct proxy *px,
7741 struct act_rule *rule, char **err)
7742{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007743 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007744
Christopher Faulet280f85b2019-07-15 15:02:04 +02007745 if (px->mode == PR_MODE_HTTP) {
7746 memprintf(err, "Lua TCP services cannot be used on HTTP proxies");
Christopher Fauletafd8f102018-11-08 11:34:21 +01007747 return ACT_RET_PRS_ERR;
7748 }
7749
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007750 /* Memory for the rule. */
7751 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7752 if (!rule->arg.hlua_rule) {
7753 memprintf(err, "out of memory error");
7754 return ACT_RET_PRS_ERR;
7755 }
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007756
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007757 /* Reference the Lua function and store the reference. */
Thierry Fournierad5345f2020-11-29 02:05:57 +01007758 rule->arg.hlua_rule->fcn = fcn;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007759
7760 /* TODO: later accept arguments. */
7761 rule->arg.hlua_rule->args = NULL;
7762
7763 /* Add applet pointer in the rule. */
7764 rule->applet.obj_type = OBJ_TYPE_APPLET;
7765 rule->applet.name = fcn->name;
7766 rule->applet.init = hlua_applet_tcp_init;
7767 rule->applet.fct = hlua_applet_tcp_fct;
7768 rule->applet.release = hlua_applet_tcp_release;
7769 rule->applet.timeout = hlua_timeout_applet;
7770
7771 return 0;
7772}
7773
7774/* This function is an LUA binding used for registering
7775 * "sample-conv" functions. It expects a converter name used
7776 * in the haproxy configuration file, and an LUA function.
7777 */
7778__LJMP static int hlua_register_service(lua_State *L)
7779{
7780 struct action_kw_list *akl;
7781 const char *name;
7782 const char *env;
7783 int ref;
7784 int len;
7785 struct hlua_function *fcn;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007786 struct buffer *trash;
7787 struct action_kw *akw;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007788
7789 MAY_LJMP(check_args(L, 3, "register_service"));
7790
7791 /* First argument : converter name. */
7792 name = MAY_LJMP(luaL_checkstring(L, 1));
7793
7794 /* Second argument : environment. */
7795 env = MAY_LJMP(luaL_checkstring(L, 2));
7796
7797 /* Third argument : lua function. */
7798 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7799
Thierry Fournierf67442e2020-11-28 20:41:07 +01007800 /* Check for service already registered */
7801 trash = get_trash_chunk();
7802 chunk_printf(trash, "lua.%s", name);
7803 akw = service_find(trash->area);
7804 if (akw != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01007805 fcn = akw->private;
7806 if (fcn->function_ref[hlua_state_id] != -1) {
7807 ha_warning("Trying to register service 'lua.%s' more than once. "
7808 "This will become a hard error in version 2.5.\n", name);
7809 }
7810 fcn->function_ref[hlua_state_id] = ref;
7811 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01007812 }
7813
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007814 /* Allocate and fill the sample fetch keyword struct. */
7815 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
7816 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007817 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01007818 fcn = new_hlua_function();
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007819 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007820 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007821
7822 /* Fill fcn. */
7823 len = strlen("<lua.>") + strlen(name) + 1;
7824 fcn->name = calloc(1, len);
7825 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007826 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007827 snprintf((char *)fcn->name, len, "<lua.%s>", name);
Thierry Fournierc7492592020-11-28 23:57:24 +01007828 fcn->function_ref[hlua_state_id] = ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007829
7830 /* List head */
7831 akl->list.n = akl->list.p = NULL;
7832
7833 /* converter keyword. */
7834 len = strlen("lua.") + strlen(name) + 1;
7835 akl->kw[0].kw = calloc(1, len);
7836 if (!akl->kw[0].kw)
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
7839 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7840
Thierry FOURNIER / OZON.IO02564fd2016-11-12 11:07:05 +01007841 /* Check required environment. Only accepted "http" or "tcp". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007842 if (strcmp(env, "tcp") == 0)
7843 akl->kw[0].parse = action_register_service_tcp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007844 else if (strcmp(env, "http") == 0)
7845 akl->kw[0].parse = action_register_service_http;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007846 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007847 WILL_LJMP(luaL_error(L, "Lua service environment '%s' is unknown. "
Eric Salamafe7456f2017-12-21 14:30:07 +01007848 "'tcp' or 'http' are expected.", env));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007849
7850 akl->kw[0].match_pfx = 0;
7851 akl->kw[0].private = fcn;
7852
7853 /* End of array. */
7854 memset(&akl->kw[1], 0, sizeof(*akl->kw));
7855
7856 /* Register this new converter */
7857 service_keywords_register(akl);
7858
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007859 return 0;
7860}
7861
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007862/* This function initialises Lua cli handler. It copies the
7863 * arguments in the Lua stack and create channel IO objects.
7864 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02007865static int hlua_cli_parse_fct(char **args, char *payload, struct appctx *appctx, void *private)
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007866{
7867 struct hlua *hlua;
7868 struct hlua_function *fcn;
7869 int i;
7870 const char *error;
7871
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007872 fcn = private;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007873 appctx->ctx.hlua_cli.fcn = private;
7874
Willy Tarreaubafbe012017-11-24 17:34:44 +01007875 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007876 if (!hlua) {
7877 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007878 return 1;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007879 }
7880 HLUA_INIT(hlua);
7881 appctx->ctx.hlua_cli.hlua = hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007882
7883 /* Create task used by signal to wakeup applets.
Ilya Shipitsind4259502020-04-08 01:07:56 +05007884 * We use the same wakeup function than the Lua applet_tcp and
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007885 * applet_http. It is absolutely compatible.
7886 */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007887 appctx->ctx.hlua_cli.task = task_new(tid_bit);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007888 if (!appctx->ctx.hlua_cli.task) {
Thierry FOURNIERffbf5692016-12-16 11:14:06 +01007889 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007890 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007891 }
7892 appctx->ctx.hlua_cli.task->nice = 0;
7893 appctx->ctx.hlua_cli.task->context = appctx;
7894 appctx->ctx.hlua_cli.task->process = hlua_applet_wakeup;
7895
7896 /* Initialises the Lua context */
Thierry Fournierc7492592020-11-28 23:57:24 +01007897 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 +01007898 SEND_ERR(NULL, "Lua cli '%s': can't initialize Lua context.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007899 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007900 }
7901
7902 /* The following Lua calls can fail. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007903 if (!SET_SAFE_LJMP(hlua)) {
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007904 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7905 error = lua_tostring(hlua->T, -1);
7906 else
7907 error = "critical error";
7908 SEND_ERR(NULL, "Lua cli '%s': %s.\n", fcn->name, error);
7909 goto error;
7910 }
7911
7912 /* Check stack available size. */
7913 if (!lua_checkstack(hlua->T, 2)) {
7914 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7915 goto error;
7916 }
7917
7918 /* Restore the function in the stack. */
Thierry Fournierc7492592020-11-28 23:57:24 +01007919 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, fcn->function_ref[hlua->state_id]);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007920
7921 /* Once the arguments parsed, the CLI is like an AppletTCP,
7922 * so push AppletTCP in the stack.
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007923 */
7924 if (!hlua_applet_tcp_new(hlua->T, appctx)) {
7925 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7926 goto error;
7927 }
7928 hlua->nargs = 1;
7929
7930 /* push keywords in the stack. */
7931 for (i = 0; *args[i]; i++) {
7932 /* Check stack available size. */
7933 if (!lua_checkstack(hlua->T, 1)) {
7934 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7935 goto error;
7936 }
7937 lua_pushstring(hlua->T, args[i]);
7938 hlua->nargs++;
7939 }
7940
7941 /* We must initialize the execution timeouts. */
7942 hlua->max_time = hlua_timeout_session;
7943
7944 /* At this point the execution is safe. */
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007945 RESET_SAFE_LJMP(hlua);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007946
7947 /* It's ok */
7948 return 0;
7949
7950 /* It's not ok. */
7951error:
Thierry Fournier7cbe5042020-11-28 17:02:21 +01007952 RESET_SAFE_LJMP(hlua);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007953 hlua_ctx_destroy(hlua);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007954 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007955 return 1;
7956}
7957
7958static int hlua_cli_io_handler_fct(struct appctx *appctx)
7959{
7960 struct hlua *hlua;
7961 struct stream_interface *si;
7962 struct hlua_function *fcn;
7963
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007964 hlua = appctx->ctx.hlua_cli.hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007965 si = appctx->owner;
Willy Tarreau8ae4f752016-12-14 15:41:45 +01007966 fcn = appctx->ctx.hlua_cli.fcn;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007967
7968 /* If the stream is disconnect or closed, ldo nothing. */
7969 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7970 return 1;
7971
7972 /* Execute the function. */
7973 switch (hlua_ctx_resume(hlua, 1)) {
7974
7975 /* finished. */
7976 case HLUA_E_OK:
7977 return 1;
7978
7979 /* yield. */
7980 case HLUA_E_AGAIN:
7981 /* We want write. */
7982 if (HLUA_IS_WAKERESWR(hlua))
Willy Tarreaudb398432018-11-15 11:08:52 +01007983 si_rx_room_blk(si);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007984 /* Set the timeout. */
7985 if (hlua->wake_time != TICK_ETERNITY)
7986 task_schedule(hlua->task, hlua->wake_time);
7987 return 0;
7988
7989 /* finished with error. */
7990 case HLUA_E_ERRMSG:
7991 /* Display log. */
7992 SEND_ERR(NULL, "Lua cli '%s': %s.\n",
7993 fcn->name, lua_tostring(hlua->T, -1));
7994 lua_pop(hlua->T, 1);
7995 return 1;
7996
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007997 case HLUA_E_ETMOUT:
7998 SEND_ERR(NULL, "Lua converter '%s': execution timeout.\n",
7999 fcn->name);
8000 return 1;
8001
8002 case HLUA_E_NOMEM:
8003 SEND_ERR(NULL, "Lua converter '%s': out of memory error.\n",
8004 fcn->name);
8005 return 1;
8006
8007 case HLUA_E_YIELD: /* unexpected */
8008 SEND_ERR(NULL, "Lua converter '%s': yield not allowed.\n",
8009 fcn->name);
8010 return 1;
8011
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008012 case HLUA_E_ERR:
8013 /* Display log. */
8014 SEND_ERR(NULL, "Lua cli '%s' return an unknown error.\n",
8015 fcn->name);
8016 return 1;
8017
8018 default:
8019 return 1;
8020 }
8021
8022 return 1;
8023}
8024
8025static void hlua_cli_io_release_fct(struct appctx *appctx)
8026{
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01008027 hlua_ctx_destroy(appctx->ctx.hlua_cli.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01008028 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008029}
8030
8031/* This function is an LUA binding used for registering
8032 * new keywords in the cli. It expects a list of keywords
8033 * which are the "path". It is limited to 5 keywords. A
8034 * description of the command, a function to be executed
8035 * for the parsing and a function for io handlers.
8036 */
8037__LJMP static int hlua_register_cli(lua_State *L)
8038{
8039 struct cli_kw_list *cli_kws;
8040 const char *message;
8041 int ref_io;
8042 int len;
8043 struct hlua_function *fcn;
8044 int index;
8045 int i;
Thierry Fournierf67442e2020-11-28 20:41:07 +01008046 struct buffer *trash;
8047 const char *kw[5];
8048 struct cli_kw *cli_kw;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008049
8050 MAY_LJMP(check_args(L, 3, "register_cli"));
8051
8052 /* First argument : an array of maximum 5 keywords. */
8053 if (!lua_istable(L, 1))
8054 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table"));
8055
8056 /* Second argument : string with contextual message. */
8057 message = MAY_LJMP(luaL_checkstring(L, 2));
8058
8059 /* Third and fourth argument : lua function. */
8060 ref_io = MAY_LJMP(hlua_checkfunction(L, 3));
8061
Thierry Fournierf67442e2020-11-28 20:41:07 +01008062 /* Check for CLI service already registered */
8063 trash = get_trash_chunk();
8064 index = 0;
8065 lua_pushnil(L);
8066 memset(kw, 0, sizeof(kw));
8067 while (lua_next(L, 1) != 0) {
8068 if (index >= CLI_PREFIX_KW_NB)
8069 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
8070 if (lua_type(L, -1) != LUA_TSTRING)
8071 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
8072 kw[index] = lua_tostring(L, -1);
8073 if (index == 0)
8074 chunk_printf(trash, "%s", kw[index]);
8075 else
8076 chunk_appendf(trash, " %s", kw[index]);
8077 index++;
8078 lua_pop(L, 1);
8079 }
8080 cli_kw = cli_find_kw_exact((char **)kw);
8081 if (cli_kw != NULL) {
Thierry Fournier59f11be2020-11-29 00:37:41 +01008082 fcn = cli_kw->private;
8083 if (fcn->function_ref[hlua_state_id] != -1) {
8084 ha_warning("Trying to register CLI keyword 'lua.%s' more than once. "
8085 "This will become a hard error in version 2.5.\n", trash->area);
8086 }
8087 fcn->function_ref[hlua_state_id] = ref_io;
8088 return 0;
Thierry Fournierf67442e2020-11-28 20:41:07 +01008089 }
8090
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008091 /* Allocate and fill the sample fetch keyword struct. */
8092 cli_kws = calloc(1, sizeof(*cli_kws) + sizeof(struct cli_kw) * 2);
8093 if (!cli_kws)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008094 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry Fournier62a22aa2020-11-28 21:06:35 +01008095 fcn = new_hlua_function();
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008096 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008097 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008098
8099 /* Fill path. */
8100 index = 0;
8101 lua_pushnil(L);
8102 while(lua_next(L, 1) != 0) {
8103 if (index >= 5)
8104 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
8105 if (lua_type(L, -1) != LUA_TSTRING)
8106 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
8107 cli_kws->kw[0].str_kw[index] = strdup(lua_tostring(L, -1));
8108 if (!cli_kws->kw[0].str_kw[index])
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008109 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008110 index++;
8111 lua_pop(L, 1);
8112 }
8113
8114 /* Copy help message. */
8115 cli_kws->kw[0].usage = strdup(message);
8116 if (!cli_kws->kw[0].usage)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008117 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008118
8119 /* Fill fcn io handler. */
8120 len = strlen("<lua.cli>") + 1;
8121 for (i = 0; i < index; i++)
8122 len += strlen(cli_kws->kw[0].str_kw[i]) + 1;
8123 fcn->name = calloc(1, len);
8124 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008125 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008126 strncat((char *)fcn->name, "<lua.cli", len);
8127 for (i = 0; i < index; i++) {
8128 strncat((char *)fcn->name, ".", len);
8129 strncat((char *)fcn->name, cli_kws->kw[0].str_kw[i], len);
8130 }
8131 strncat((char *)fcn->name, ">", len);
Thierry Fournierc7492592020-11-28 23:57:24 +01008132 fcn->function_ref[hlua_state_id] = ref_io;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008133
8134 /* Fill last entries. */
8135 cli_kws->kw[0].private = fcn;
8136 cli_kws->kw[0].parse = hlua_cli_parse_fct;
8137 cli_kws->kw[0].io_handler = hlua_cli_io_handler_fct;
8138 cli_kws->kw[0].io_release = hlua_cli_io_release_fct;
8139
8140 /* Register this new converter */
8141 cli_register_kw(cli_kws);
8142
8143 return 0;
8144}
8145
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008146static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx,
8147 struct proxy *defpx, const char *file, int line,
8148 char **err, unsigned int *timeout)
8149{
8150 const char *error;
8151
8152 error = parse_time_err(args[1], timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02008153 if (error == PARSE_TIME_OVER) {
8154 memprintf(err, "timer overflow in argument <%s> to <%s> (maximum value is 2147483647 ms or ~24.8 days)",
8155 args[1], args[0]);
8156 return -1;
8157 }
8158 else if (error == PARSE_TIME_UNDER) {
8159 memprintf(err, "timer underflow in argument <%s> to <%s> (minimum non-null value is 1 ms)",
8160 args[1], args[0]);
8161 return -1;
8162 }
8163 else if (error) {
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008164 memprintf(err, "%s: invalid timeout", args[0]);
8165 return -1;
8166 }
8167 return 0;
8168}
8169
8170static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx,
8171 struct proxy *defpx, const char *file, int line,
8172 char **err)
8173{
8174 return hlua_read_timeout(args, section_type, curpx, defpx,
8175 file, line, err, &hlua_timeout_session);
8176}
8177
8178static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx,
8179 struct proxy *defpx, const char *file, int line,
8180 char **err)
8181{
8182 return hlua_read_timeout(args, section_type, curpx, defpx,
8183 file, line, err, &hlua_timeout_task);
8184}
8185
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008186static int hlua_applet_timeout(char **args, int section_type, struct proxy *curpx,
8187 struct proxy *defpx, const char *file, int line,
8188 char **err)
8189{
8190 return hlua_read_timeout(args, section_type, curpx, defpx,
8191 file, line, err, &hlua_timeout_applet);
8192}
8193
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008194static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx,
8195 struct proxy *defpx, const char *file, int line,
8196 char **err)
8197{
8198 char *error;
8199
8200 hlua_nb_instruction = strtoll(args[1], &error, 10);
8201 if (*error != '\0') {
8202 memprintf(err, "%s: invalid number", args[0]);
8203 return -1;
8204 }
8205 return 0;
8206}
8207
Willy Tarreau32f61e22015-03-18 17:54:59 +01008208static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx,
8209 struct proxy *defpx, const char *file, int line,
8210 char **err)
8211{
8212 char *error;
8213
8214 if (*(args[1]) == 0) {
8215 memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]);
8216 return -1;
8217 }
8218 hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L;
8219 if (*error != '\0') {
8220 memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error);
8221 return -1;
8222 }
8223 return 0;
8224}
8225
8226
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008227/* This function is called by the main configuration key "lua-load". It loads and
8228 * execute an lua file during the parsing of the HAProxy configuration file. It is
8229 * the main lua entry point.
8230 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008231 * This function runs with the HAProxy keywords API. It returns -1 if an error
8232 * occurs, otherwise it returns 0.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008233 *
8234 * In some error case, LUA set an error message in top of the stack. This function
8235 * returns this error message in the HAProxy logs and pop it from the stack.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008236 *
8237 * This function can fail with an abort() due to an Lua critical error.
8238 * We are in the configuration parsing process of HAProxy, this abort() is
8239 * tolerated.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008240 */
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008241static int hlua_load_state(char *filename, lua_State *L, char **err)
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008242{
8243 int error;
8244
8245 /* Just load and compile the file. */
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008246 error = luaL_loadfile(L, filename);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008247 if (error) {
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008248 memprintf(err, "error in Lua file '%s': %s", filename, lua_tostring(L, -1));
8249 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008250 return -1;
8251 }
8252
8253 /* If no syntax error where detected, execute the code. */
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008254 error = lua_pcall(L, 0, LUA_MULTRET, 0);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008255 switch (error) {
8256 case LUA_OK:
8257 break;
8258 case LUA_ERRRUN:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008259 memprintf(err, "Lua runtime error: %s\n", lua_tostring(L, -1));
8260 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008261 return -1;
8262 case LUA_ERRMEM:
Thierry Fournierde6145f2020-11-29 00:55:53 +01008263 memprintf(err, "Lua out of memory error\n");
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008264 return -1;
8265 case LUA_ERRERR:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008266 memprintf(err, "Lua message handler error: %s\n", lua_tostring(L, -1));
8267 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008268 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008269#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM <= 503
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008270 case LUA_ERRGCMM:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008271 memprintf(err, "Lua garbage collector error: %s\n", lua_tostring(L, -1));
8272 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008273 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008274#endif
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008275 default:
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008276 memprintf(err, "Lua unknown error: %s\n", lua_tostring(L, -1));
8277 lua_pop(L, 1);
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008278 return -1;
8279 }
8280
8281 return 0;
8282}
8283
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008284static int hlua_load(char **args, int section_type, struct proxy *curpx,
8285 struct proxy *defpx, const char *file, int line,
8286 char **err)
8287{
8288 if (*(args[1]) == 0) {
8289 memprintf(err, "'%s' expects a file name as parameter.\n", args[0]);
8290 return -1;
8291 }
8292
Thierry Fournier59f11be2020-11-29 00:37:41 +01008293 /* loading for global state */
Thierry Fournierc7492592020-11-28 23:57:24 +01008294 hlua_state_id = 0;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008295 ha_set_tid(0);
Thierry Fournierafc63e22020-11-28 17:06:51 +01008296 return hlua_load_state(args[1], hlua_states[0], err);
Thierry Fournierc93c15c2020-11-28 15:02:13 +01008297}
8298
Thierry Fournier59f11be2020-11-29 00:37:41 +01008299static int hlua_load_per_thread(char **args, int section_type, struct proxy *curpx,
8300 struct proxy *defpx, const char *file, int line,
8301 char **err)
8302{
8303 int len;
8304
8305 if (*(args[1]) == 0) {
8306 memprintf(err, "'%s' expects a file as parameter.\n", args[0]);
8307 return -1;
8308 }
8309
8310 if (per_thread_load == NULL) {
8311 /* allocate the first entry large enough to store the final NULL */
8312 per_thread_load = calloc(1, sizeof(*per_thread_load));
8313 if (per_thread_load == NULL) {
8314 memprintf(err, "out of memory error");
8315 return -1;
8316 }
8317 }
8318
8319 /* count used entries */
8320 for (len = 0; per_thread_load[len] != NULL; len++)
8321 ;
8322
8323 per_thread_load = realloc(per_thread_load, (len + 2) * sizeof(*per_thread_load));
8324 if (per_thread_load == NULL) {
8325 memprintf(err, "out of memory error");
8326 return -1;
8327 }
8328
8329 per_thread_load[len] = strdup(args[1]);
8330 per_thread_load[len + 1] = NULL;
8331
8332 if (per_thread_load[len] == NULL) {
8333 memprintf(err, "out of memory error");
8334 return -1;
8335 }
8336
8337 /* loading for thread 1 only */
8338 hlua_state_id = 1;
8339 ha_set_tid(0);
8340 return hlua_load_state(args[1], hlua_states[1], err);
8341}
8342
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008343/* Prepend the given <path> followed by a semicolon to the `package.<type>` variable
8344 * in the given <ctx>.
8345 */
Thierry Fournier3fb9e512020-11-28 10:13:12 +01008346static int hlua_prepend_path(lua_State *L, char *type, char *path)
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008347{
Thierry Fournier3fb9e512020-11-28 10:13:12 +01008348 lua_getglobal(L, "package"); /* push package variable */
8349 lua_pushstring(L, path); /* push given path */
8350 lua_pushstring(L, ";"); /* push semicolon */
8351 lua_getfield(L, -3, type); /* push old path */
8352 lua_concat(L, 3); /* concatenate to new path */
8353 lua_setfield(L, -2, type); /* store new path */
8354 lua_pop(L, 1); /* pop package variable */
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008355
8356 return 0;
8357}
8358
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008359static int hlua_config_prepend_path(char **args, int section_type, struct proxy *curpx,
8360 struct proxy *defpx, const char *file, int line,
8361 char **err)
8362{
8363 char *path;
8364 char *type = "path";
Thierry Fournier59f11be2020-11-29 00:37:41 +01008365 struct prepend_path *p;
8366
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008367 if (too_many_args(2, args, err, NULL)) {
8368 return -1;
8369 }
8370
8371 if (!(*args[1])) {
8372 memprintf(err, "'%s' expects to receive a <path> as argument", args[0]);
8373 return -1;
8374 }
8375 path = args[1];
8376
8377 if (*args[2]) {
8378 if (strcmp(args[2], "path") != 0 && strcmp(args[2], "cpath") != 0) {
8379 memprintf(err, "'%s' expects <type> to either be 'path' or 'cpath'", args[0]);
8380 return -1;
8381 }
8382 type = args[2];
8383 }
8384
Thierry Fournier59f11be2020-11-29 00:37:41 +01008385 p = calloc(1, sizeof(*p));
8386 if (p == NULL) {
8387 memprintf(err, "out of memory error");
8388 return -1;
8389 }
8390 p->path = strdup(path);
8391 if (p->path == NULL) {
8392 memprintf(err, "out of memory error");
8393 return -1;
8394 }
8395 p->type = strdup(type);
8396 if (p->type == NULL) {
8397 memprintf(err, "out of memory error");
8398 return -1;
8399 }
8400 LIST_ADDQ(&prepend_path_list, &p->l);
8401
8402 hlua_prepend_path(hlua_states[0], type, path);
8403 hlua_prepend_path(hlua_states[1], type, path);
8404 return 0;
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008405}
8406
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008407/* configuration keywords declaration */
8408static struct cfg_kw_list cfg_kws = {{ },{
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008409 { CFG_GLOBAL, "lua-prepend-path", hlua_config_prepend_path },
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008410 { CFG_GLOBAL, "lua-load", hlua_load },
Thierry Fournier59f11be2020-11-29 00:37:41 +01008411 { CFG_GLOBAL, "lua-load-per-thread", hlua_load_per_thread },
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008412 { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout },
8413 { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout },
Thierry FOURNIER56da1012015-10-01 08:42:31 +02008414 { CFG_GLOBAL, "tune.lua.service-timeout", hlua_applet_timeout },
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008415 { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield },
Willy Tarreau32f61e22015-03-18 17:54:59 +01008416 { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem },
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008417 { 0, NULL, NULL },
8418}};
8419
Willy Tarreau0108d902018-11-25 19:14:37 +01008420INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
8421
Christopher Fauletafd8f102018-11-08 11:34:21 +01008422
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008423/* This function can fail with an abort() due to an Lua critical error.
8424 * We are in the initialisation process of HAProxy, this abort() is
8425 * tolerated.
8426 */
Thierry Fournierb8cef172020-11-28 15:37:17 +01008427int hlua_post_init_state(lua_State *L)
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008428{
8429 struct hlua_init_function *init;
8430 const char *msg;
8431 enum hlua_exec ret;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008432 const char *error;
Thierry Fournier670db242020-11-28 10:49:59 +01008433 const char *kind;
8434 const char *trace;
8435 int return_status = 1;
8436#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
8437 int nres;
8438#endif
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008439
Willy Tarreaucdb53462020-12-02 12:12:00 +01008440 /* disable memory limit checks if limit is not set */
8441 if (!hlua_global_allocator.limit)
8442 hlua_global_allocator.limit = ~hlua_global_allocator.limit;
8443
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05008444 /* Call post initialisation function in safe environment. */
Thierry Fournier3c539322020-11-28 16:05:05 +01008445 if (setjmp(safe_ljmp_env) != 0) {
8446 lua_atpanic(L, hlua_panic_safe);
Thierry Fournierb8cef172020-11-28 15:37:17 +01008447 if (lua_type(L, -1) == LUA_TSTRING)
8448 error = lua_tostring(L, -1);
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008449 else
8450 error = "critical error";
8451 fprintf(stderr, "Lua post-init: %s.\n", error);
8452 exit(1);
Thierry Fournier3c539322020-11-28 16:05:05 +01008453 } else {
8454 lua_atpanic(L, hlua_panic_ljmp);
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008455 }
Frédéric Lécaille54f2bcf2018-08-29 13:46:24 +02008456
Thierry Fournierb8cef172020-11-28 15:37:17 +01008457 hlua_fcn_post_init(L);
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008458
Thierry Fournierc7492592020-11-28 23:57:24 +01008459 list_for_each_entry(init, &hlua_init_functions[hlua_state_id], l) {
Thierry Fournierb8cef172020-11-28 15:37:17 +01008460 lua_rawgeti(L, LUA_REGISTRYINDEX, init->function_ref);
Thierry Fournier670db242020-11-28 10:49:59 +01008461
8462#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
Thierry Fournierb8cef172020-11-28 15:37:17 +01008463 ret = lua_resume(L, L, 0, &nres);
Thierry Fournier670db242020-11-28 10:49:59 +01008464#else
Thierry Fournierb8cef172020-11-28 15:37:17 +01008465 ret = lua_resume(L, L, 0);
Thierry Fournier670db242020-11-28 10:49:59 +01008466#endif
8467 kind = NULL;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008468 switch (ret) {
Thierry Fournier670db242020-11-28 10:49:59 +01008469
8470 case LUA_OK:
Thierry Fournierb8cef172020-11-28 15:37:17 +01008471 lua_pop(L, -1);
Thierry Fournier13d08b72020-11-28 11:02:58 +01008472 break;
Thierry Fournier670db242020-11-28 10:49:59 +01008473
8474 case LUA_ERRERR:
8475 kind = "message handler error";
8476 /* Fall thru */
8477 case LUA_ERRRUN:
8478 if (!kind)
8479 kind = "runtime error";
Thierry Fournierb8cef172020-11-28 15:37:17 +01008480 msg = lua_tostring(L, -1);
8481 lua_settop(L, 0); /* Empty the stack. */
8482 lua_pop(L, 1);
8483 trace = hlua_traceback(L);
Thierry Fournier670db242020-11-28 10:49:59 +01008484 if (msg)
8485 ha_alert("Lua init: %s: '%s' from %s\n", kind, msg, trace);
8486 else
8487 ha_alert("Lua init: unknown %s from %s\n", kind, trace);
8488 return_status = 0;
8489 break;
8490
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008491 default:
Thierry Fournier670db242020-11-28 10:49:59 +01008492 /* Unknown error */
8493 kind = "Unknown error";
8494 /* Fall thru */
8495 case LUA_YIELD:
8496 /* yield is not configured at this step, this state doesn't happen */
8497 if (!kind)
8498 kind = "yield not allowed";
8499 /* Fall thru */
8500 case LUA_ERRMEM:
8501 if (!kind)
8502 kind = "out of memory error";
Thierry Fournierb8cef172020-11-28 15:37:17 +01008503 lua_settop(L, 0);
8504 lua_pop(L, 1);
8505 trace = hlua_traceback(L);
Thierry Fournier670db242020-11-28 10:49:59 +01008506 ha_alert("Lua init: %s: %s\n", kind, trace);
8507 return_status = 0;
8508 break;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008509 }
Thierry Fournier670db242020-11-28 10:49:59 +01008510 if (!return_status)
8511 break;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008512 }
Thierry Fournier3c539322020-11-28 16:05:05 +01008513
8514 lua_atpanic(L, hlua_panic_safe);
Thierry Fournier670db242020-11-28 10:49:59 +01008515 return return_status;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008516}
8517
Thierry Fournierb8cef172020-11-28 15:37:17 +01008518int hlua_post_init()
8519{
Thierry Fournier59f11be2020-11-29 00:37:41 +01008520 int ret;
8521 int i;
8522 int errors;
8523 char *err = NULL;
8524 struct hlua_function *fcn;
8525
Thierry Fournierb8cef172020-11-28 15:37:17 +01008526#if USE_OPENSSL
8527 /* Initialize SSL server. */
8528 if (socket_ssl.xprt->prepare_srv) {
8529 int saved_used_backed = global.ssl_used_backend;
8530 // don't affect maxconn automatic computation
8531 socket_ssl.xprt->prepare_srv(&socket_ssl);
8532 global.ssl_used_backend = saved_used_backed;
8533 }
8534#endif
8535
Thierry Fournierc7492592020-11-28 23:57:24 +01008536 /* Perform post init of common thread */
8537 hlua_state_id = 0;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008538 ha_set_tid(0);
8539 ret = hlua_post_init_state(hlua_states[hlua_state_id]);
8540 if (ret == 0)
8541 return 0;
8542
8543 /* init remaining lua states and load files */
8544 for (hlua_state_id = 2; hlua_state_id < global.nbthread + 1; hlua_state_id++) {
8545
8546 /* set thread context */
8547 ha_set_tid(hlua_state_id - 1);
8548
8549 /* Init lua state */
8550 hlua_states[hlua_state_id] = hlua_init_state(hlua_state_id);
8551
8552 /* Load lua files */
8553 for (i = 0; per_thread_load && per_thread_load[i]; i++) {
8554 ret = hlua_load_state(per_thread_load[i], hlua_states[hlua_state_id], &err);
8555 if (ret != 0) {
8556 ha_alert("Lua init: %s\n", err);
8557 return 0;
8558 }
8559 }
8560 }
8561
8562 /* Reset thread context */
8563 ha_set_tid(0);
8564
8565 /* Execute post init for all states */
8566 for (hlua_state_id = 1; hlua_state_id < global.nbthread + 1; hlua_state_id++) {
8567
8568 /* set thread context */
8569 ha_set_tid(hlua_state_id - 1);
8570
8571 /* run post init */
8572 ret = hlua_post_init_state(hlua_states[hlua_state_id]);
8573 if (ret == 0)
8574 return 0;
8575 }
8576
8577 /* Reset thread context */
8578 ha_set_tid(0);
8579
8580 /* control functions registering. Each function must have:
8581 * - only the function_ref[0] set positive and all other to -1
8582 * - only the function_ref[0] set to -1 and all other positive
8583 * This ensure a same reference is not used both in shared
8584 * lua state and thread dedicated lua state. Note: is the case
8585 * reach, the shared state is prioritary, but the bug will be
8586 * complicated to found for the end user.
8587 */
8588 errors = 0;
8589 list_for_each_entry(fcn, &referenced_functions, l) {
8590 ret = 0;
8591 for (i = 1; i < global.nbthread + 1; i++) {
8592 if (fcn->function_ref[i] == -1)
8593 ret--;
8594 else
8595 ret++;
8596 }
8597 if (abs(ret) != global.nbthread) {
8598 ha_alert("Lua function '%s' is not referenced in all thread. "
8599 "Expect function in all thread or in none thread.\n", fcn->name);
8600 errors++;
8601 continue;
8602 }
8603
8604 if ((fcn->function_ref[0] == -1) == (ret < 0)) {
8605 ha_alert("Lua function '%s' is referenced both ins shared Lua context (throught lua-load) "
8606 "and per-thread Lua context (throught lua-load-per-thread). these two context "
8607 "exclusive.\n", fcn->name);
8608 errors++;
8609 }
8610 }
8611
8612 if (errors > 0)
8613 return 0;
8614
8615 /* after this point, this global wil no longer used, so set to
8616 * -1 in order to have probably a segfault if someone use it
8617 */
8618 hlua_state_id = -1;
8619
8620 return 1;
Thierry Fournierb8cef172020-11-28 15:37:17 +01008621}
8622
Willy Tarreau32f61e22015-03-18 17:54:59 +01008623/* The memory allocator used by the Lua stack. <ud> is a pointer to the
8624 * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize>
8625 * is the previously allocated size or the kind of object in case of a new
Willy Tarreaud36c7fa2020-12-02 12:26:29 +01008626 * allocation. <nsize> is the requested new size. A new allocation is
8627 * indicated by <ptr> being NULL. A free is indicated by <nsize> being
Willy Tarreaucdb53462020-12-02 12:12:00 +01008628 * zero. This one verifies that the limits are respected but is optimized
8629 * for the fast case where limits are not used, hence stats are not updated.
Willy Tarreau32f61e22015-03-18 17:54:59 +01008630 */
8631static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
8632{
8633 struct hlua_mem_allocator *zone = ud;
Willy Tarreaucdb53462020-12-02 12:12:00 +01008634 size_t limit, old, new;
8635
8636 /* a limit of ~0 means unlimited and boot complete, so there's no need
8637 * for accounting anymore.
8638 */
8639 if (likely(~zone->limit == 0))
8640 return realloc(ptr, nsize);
Willy Tarreau32f61e22015-03-18 17:54:59 +01008641
Willy Tarreaud36c7fa2020-12-02 12:26:29 +01008642 if (!ptr)
8643 osize = 0;
Willy Tarreau32f61e22015-03-18 17:54:59 +01008644
Willy Tarreaucdb53462020-12-02 12:12:00 +01008645 /* enforce strict limits across all threads */
8646 limit = zone->limit;
8647 old = _HA_ATOMIC_LOAD(&zone->allocated);
8648 do {
8649 new = old + nsize - osize;
8650 if (unlikely(nsize && limit && new > limit))
8651 return NULL;
8652 } while (!_HA_ATOMIC_CAS(&zone->allocated, &old, new));
Willy Tarreau32f61e22015-03-18 17:54:59 +01008653
8654 ptr = realloc(ptr, nsize);
Willy Tarreaucdb53462020-12-02 12:12:00 +01008655
8656 if (unlikely(!ptr && nsize)) // failed
8657 _HA_ATOMIC_SUB(&zone->allocated, nsize - osize);
8658
8659 __ha_barrier_atomic_store();
Willy Tarreau32f61e22015-03-18 17:54:59 +01008660 return ptr;
8661}
8662
Thierry Fournierecb83c22020-11-28 15:49:44 +01008663/* This function can fail with an abort() due to a Lua critical error.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008664 * We are in the initialisation process of HAProxy, this abort() is
8665 * tolerated.
8666 */
Thierry Fournierecb83c22020-11-28 15:49:44 +01008667lua_State *hlua_init_state(int thread_num)
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008668{
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008669 int i;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008670 int idx;
8671 struct sample_fetch *sf;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008672 struct sample_conv *sc;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008673 char *p;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008674 const char *error_msg;
Thierry Fournier4234dbd2020-11-28 13:18:23 +01008675 void **context;
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008676 lua_State *L;
Thierry Fournier59f11be2020-11-29 00:37:41 +01008677 struct prepend_path *pp;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008678
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008679 /* Init main lua stack. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008680 L = lua_newstate(hlua_alloc, &hlua_global_allocator);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008681
Thierry Fournier4234dbd2020-11-28 13:18:23 +01008682 /* Initialise Lua context to NULL */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008683 context = lua_getextraspace(L);
Thierry Fournier4234dbd2020-11-28 13:18:23 +01008684 *context = NULL;
8685
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008686 /* From this point, until the end of the initialisation function,
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008687 * the Lua function can fail with an abort. We are in the initialisation
8688 * process of HAProxy, this abort() is tolerated.
8689 */
8690
Thierry Fournier3c539322020-11-28 16:05:05 +01008691 /* Call post initialisation function in safe environment. */
8692 if (setjmp(safe_ljmp_env) != 0) {
8693 lua_atpanic(L, hlua_panic_safe);
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008694 if (lua_type(L, -1) == LUA_TSTRING)
8695 error_msg = lua_tostring(L, -1);
Thierry Fournier2f05cc62020-11-28 16:08:02 +01008696 else
8697 error_msg = "critical error";
8698 fprintf(stderr, "Lua init: %s.\n", error_msg);
8699 exit(1);
Thierry Fournier3c539322020-11-28 16:05:05 +01008700 } else {
8701 lua_atpanic(L, hlua_panic_ljmp);
Thierry Fournier2f05cc62020-11-28 16:08:02 +01008702 }
8703
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008704 /* Initialise lua. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008705 luaL_openlibs(L);
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008706#define HLUA_PREPEND_PATH_TOSTRING1(x) #x
8707#define HLUA_PREPEND_PATH_TOSTRING(x) HLUA_PREPEND_PATH_TOSTRING1(x)
8708#ifdef HLUA_PREPEND_PATH
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008709 hlua_prepend_path(L, "path", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_PATH));
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008710#endif
8711#ifdef HLUA_PREPEND_CPATH
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008712 hlua_prepend_path(L, "cpath", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_CPATH));
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008713#endif
8714#undef HLUA_PREPEND_PATH_TOSTRING
8715#undef HLUA_PREPEND_PATH_TOSTRING1
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008716
Thierry Fournier59f11be2020-11-29 00:37:41 +01008717 /* Apply configured prepend path */
8718 list_for_each_entry(pp, &prepend_path_list, l)
8719 hlua_prepend_path(L, pp->type, pp->path);
8720
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008721 /*
8722 *
8723 * Create "core" object.
8724 *
8725 */
8726
Thierry FOURNIERa2d8c652015-03-11 17:29:39 +01008727 /* This table entry is the object "core" base. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008728 lua_newtable(L);
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008729
Thierry Fournierecb83c22020-11-28 15:49:44 +01008730 /* set the thread id */
8731 hlua_class_const_int(L, "thread", thread_num);
8732
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008733 /* Push the loglevel constants. */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008734 for (i = 0; i < NB_LOG_LEVELS; i++)
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008735 hlua_class_const_int(L, log_levels[i], i);
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008736
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008737 /* Register special functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008738 hlua_class_function(L, "register_init", hlua_register_init);
8739 hlua_class_function(L, "register_task", hlua_register_task);
8740 hlua_class_function(L, "register_fetches", hlua_register_fetches);
8741 hlua_class_function(L, "register_converters", hlua_register_converters);
8742 hlua_class_function(L, "register_action", hlua_register_action);
8743 hlua_class_function(L, "register_service", hlua_register_service);
8744 hlua_class_function(L, "register_cli", hlua_register_cli);
8745 hlua_class_function(L, "yield", hlua_yield);
8746 hlua_class_function(L, "set_nice", hlua_set_nice);
8747 hlua_class_function(L, "sleep", hlua_sleep);
8748 hlua_class_function(L, "msleep", hlua_msleep);
8749 hlua_class_function(L, "add_acl", hlua_add_acl);
8750 hlua_class_function(L, "del_acl", hlua_del_acl);
8751 hlua_class_function(L, "set_map", hlua_set_map);
8752 hlua_class_function(L, "del_map", hlua_del_map);
8753 hlua_class_function(L, "tcp", hlua_socket_new);
8754 hlua_class_function(L, "log", hlua_log);
8755 hlua_class_function(L, "Debug", hlua_log_debug);
8756 hlua_class_function(L, "Info", hlua_log_info);
8757 hlua_class_function(L, "Warning", hlua_log_warning);
8758 hlua_class_function(L, "Alert", hlua_log_alert);
8759 hlua_class_function(L, "done", hlua_done);
8760 hlua_fcn_reg_core_fcn(L);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008761
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008762 lua_setglobal(L, "core");
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008763
8764 /*
8765 *
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008766 * Create "act" object.
8767 *
8768 */
8769
8770 /* This table entry is the object "act" base. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008771 lua_newtable(L);
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008772
8773 /* push action return constants */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008774 hlua_class_const_int(L, "CONTINUE", ACT_RET_CONT);
8775 hlua_class_const_int(L, "STOP", ACT_RET_STOP);
8776 hlua_class_const_int(L, "YIELD", ACT_RET_YIELD);
8777 hlua_class_const_int(L, "ERROR", ACT_RET_ERR);
8778 hlua_class_const_int(L, "DONE", ACT_RET_DONE);
8779 hlua_class_const_int(L, "DENY", ACT_RET_DENY);
8780 hlua_class_const_int(L, "ABORT", ACT_RET_ABRT);
8781 hlua_class_const_int(L, "INVALID", ACT_RET_INV);
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008782
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008783 hlua_class_function(L, "wake_time", hlua_set_wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01008784
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008785 lua_setglobal(L, "act");
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008786
8787 /*
8788 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008789 * Register class Map
8790 *
8791 */
8792
8793 /* This table entry is the object "Map" base. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008794 lua_newtable(L);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008795
8796 /* register pattern types. */
8797 for (i=0; i<PAT_MATCH_NUM; i++)
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008798 hlua_class_const_int(L, pat_match_names[i], i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008799 for (i=0; i<PAT_MATCH_NUM; i++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008800 snprintf(trash.area, trash.size, "_%s", pat_match_names[i]);
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008801 hlua_class_const_int(L, trash.area, i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008802 }
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008803
8804 /* register constructor. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008805 hlua_class_function(L, "new", hlua_map_new);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008806
8807 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008808 lua_newtable(L);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008809
Ilya Shipitsind4259502020-04-08 01:07:56 +05008810 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008811 lua_pushstring(L, "__index");
8812 lua_newtable(L);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008813
8814 /* Register . */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008815 hlua_class_function(L, "lookup", hlua_map_lookup);
8816 hlua_class_function(L, "slookup", hlua_map_slookup);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008817
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008818 lua_rawset(L, -3);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008819
Thierry Fournier45e78d72016-02-19 18:34:46 +01008820 /* Register previous table in the registry with reference and named entry.
8821 * The function hlua_register_metatable() pops the stack, so we
8822 * previously create a copy of the table.
8823 */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008824 lua_pushvalue(L, -1); /* Copy the -1 entry and push it on the stack. */
8825 class_map_ref = hlua_register_metatable(L, CLASS_MAP);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008826
8827 /* Assign the metatable to the mai Map object. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008828 lua_setmetatable(L, -2);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008829
8830 /* Set a name to the table. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008831 lua_setglobal(L, "Map");
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008832
8833 /*
8834 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008835 * Register class Channel
8836 *
8837 */
8838
8839 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008840 lua_newtable(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008841
Ilya Shipitsind4259502020-04-08 01:07:56 +05008842 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008843 lua_pushstring(L, "__index");
8844 lua_newtable(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008845
8846 /* Register . */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008847 hlua_class_function(L, "get", hlua_channel_get);
8848 hlua_class_function(L, "dup", hlua_channel_dup);
8849 hlua_class_function(L, "getline", hlua_channel_getline);
8850 hlua_class_function(L, "set", hlua_channel_set);
8851 hlua_class_function(L, "append", hlua_channel_append);
8852 hlua_class_function(L, "send", hlua_channel_send);
8853 hlua_class_function(L, "forward", hlua_channel_forward);
8854 hlua_class_function(L, "get_in_len", hlua_channel_get_in_len);
8855 hlua_class_function(L, "get_out_len", hlua_channel_get_out_len);
8856 hlua_class_function(L, "is_full", hlua_channel_is_full);
8857 hlua_class_function(L, "is_resp", hlua_channel_is_resp);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008858
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008859 lua_rawset(L, -3);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008860
8861 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008862 class_channel_ref = hlua_register_metatable(L, CLASS_CHANNEL);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008863
8864 /*
8865 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008866 * Register class Fetches
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008867 *
8868 */
8869
8870 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008871 lua_newtable(L);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008872
Ilya Shipitsind4259502020-04-08 01:07:56 +05008873 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008874 lua_pushstring(L, "__index");
8875 lua_newtable(L);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008876
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008877 /* Browse existing fetches and create the associated
8878 * object method.
8879 */
8880 sf = NULL;
8881 while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) {
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008882 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8883 * by an underscore.
8884 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008885 strncpy(trash.area, sf->kw, trash.size);
8886 trash.area[trash.size - 1] = '\0';
8887 for (p = trash.area; *p; p++)
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008888 if (*p == '.' || *p == '-' || *p == '+')
8889 *p = '_';
8890
8891 /* Register the function. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008892 lua_pushstring(L, trash.area);
8893 lua_pushlightuserdata(L, sf);
8894 lua_pushcclosure(L, hlua_run_sample_fetch, 1);
8895 lua_rawset(L, -3);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008896 }
8897
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008898 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008899
8900 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008901 class_fetches_ref = hlua_register_metatable(L, CLASS_FETCHES);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008902
8903 /*
8904 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008905 * Register class Converters
8906 *
8907 */
8908
8909 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008910 lua_newtable(L);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008911
8912 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008913 lua_pushstring(L, "__index");
8914 lua_newtable(L);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008915
8916 /* Browse existing converters and create the associated
8917 * object method.
8918 */
8919 sc = NULL;
8920 while ((sc = sample_conv_getnext(sc, &idx)) != NULL) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008921 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8922 * by an underscore.
8923 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008924 strncpy(trash.area, sc->kw, trash.size);
8925 trash.area[trash.size - 1] = '\0';
8926 for (p = trash.area; *p; p++)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008927 if (*p == '.' || *p == '-' || *p == '+')
8928 *p = '_';
8929
8930 /* Register the function. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008931 lua_pushstring(L, trash.area);
8932 lua_pushlightuserdata(L, sc);
8933 lua_pushcclosure(L, hlua_run_sample_conv, 1);
8934 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008935 }
8936
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008937 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008938
8939 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008940 class_converters_ref = hlua_register_metatable(L, CLASS_CONVERTERS);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008941
8942 /*
8943 *
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008944 * Register class HTTP
8945 *
8946 */
8947
8948 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008949 lua_newtable(L);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008950
Ilya Shipitsind4259502020-04-08 01:07:56 +05008951 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008952 lua_pushstring(L, "__index");
8953 lua_newtable(L);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008954
8955 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008956 hlua_class_function(L, "req_get_headers",hlua_http_req_get_headers);
8957 hlua_class_function(L, "req_del_header", hlua_http_req_del_hdr);
8958 hlua_class_function(L, "req_rep_header", hlua_http_req_rep_hdr);
8959 hlua_class_function(L, "req_rep_value", hlua_http_req_rep_val);
8960 hlua_class_function(L, "req_add_header", hlua_http_req_add_hdr);
8961 hlua_class_function(L, "req_set_header", hlua_http_req_set_hdr);
8962 hlua_class_function(L, "req_set_method", hlua_http_req_set_meth);
8963 hlua_class_function(L, "req_set_path", hlua_http_req_set_path);
8964 hlua_class_function(L, "req_set_query", hlua_http_req_set_query);
8965 hlua_class_function(L, "req_set_uri", hlua_http_req_set_uri);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008966
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008967 hlua_class_function(L, "res_get_headers",hlua_http_res_get_headers);
8968 hlua_class_function(L, "res_del_header", hlua_http_res_del_hdr);
8969 hlua_class_function(L, "res_rep_header", hlua_http_res_rep_hdr);
8970 hlua_class_function(L, "res_rep_value", hlua_http_res_rep_val);
8971 hlua_class_function(L, "res_add_header", hlua_http_res_add_hdr);
8972 hlua_class_function(L, "res_set_header", hlua_http_res_set_hdr);
8973 hlua_class_function(L, "res_set_status", hlua_http_res_set_status);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008974
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008975 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008976
8977 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008978 class_http_ref = hlua_register_metatable(L, CLASS_HTTP);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008979
8980 /*
8981 *
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008982 * Register class AppletTCP
8983 *
8984 */
8985
8986 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008987 lua_newtable(L);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008988
Ilya Shipitsind4259502020-04-08 01:07:56 +05008989 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008990 lua_pushstring(L, "__index");
8991 lua_newtable(L);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008992
8993 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01008994 hlua_class_function(L, "getline", hlua_applet_tcp_getline);
8995 hlua_class_function(L, "receive", hlua_applet_tcp_recv);
8996 hlua_class_function(L, "send", hlua_applet_tcp_send);
8997 hlua_class_function(L, "set_priv", hlua_applet_tcp_set_priv);
8998 hlua_class_function(L, "get_priv", hlua_applet_tcp_get_priv);
8999 hlua_class_function(L, "set_var", hlua_applet_tcp_set_var);
9000 hlua_class_function(L, "unset_var", hlua_applet_tcp_unset_var);
9001 hlua_class_function(L, "get_var", hlua_applet_tcp_get_var);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009002
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009003 lua_settable(L, -3);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009004
9005 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009006 class_applet_tcp_ref = hlua_register_metatable(L, CLASS_APPLET_TCP);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02009007
9008 /*
9009 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009010 * Register class AppletHTTP
9011 *
9012 */
9013
9014 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009015 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009016
Ilya Shipitsind4259502020-04-08 01:07:56 +05009017 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009018 lua_pushstring(L, "__index");
9019 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009020
9021 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009022 hlua_class_function(L, "set_priv", hlua_applet_http_set_priv);
9023 hlua_class_function(L, "get_priv", hlua_applet_http_get_priv);
9024 hlua_class_function(L, "set_var", hlua_applet_http_set_var);
9025 hlua_class_function(L, "unset_var", hlua_applet_http_unset_var);
9026 hlua_class_function(L, "get_var", hlua_applet_http_get_var);
9027 hlua_class_function(L, "getline", hlua_applet_http_getline);
9028 hlua_class_function(L, "receive", hlua_applet_http_recv);
9029 hlua_class_function(L, "send", hlua_applet_http_send);
9030 hlua_class_function(L, "add_header", hlua_applet_http_addheader);
9031 hlua_class_function(L, "set_status", hlua_applet_http_status);
9032 hlua_class_function(L, "start_response", hlua_applet_http_start_response);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009033
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009034 lua_settable(L, -3);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009035
9036 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009037 class_applet_http_ref = hlua_register_metatable(L, CLASS_APPLET_HTTP);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02009038
9039 /*
9040 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01009041 * Register class TXN
9042 *
9043 */
9044
9045 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009046 lua_newtable(L);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01009047
Ilya Shipitsind4259502020-04-08 01:07:56 +05009048 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009049 lua_pushstring(L, "__index");
9050 lua_newtable(L);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01009051
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01009052 /* Register Lua functions. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009053 hlua_class_function(L, "set_priv", hlua_set_priv);
9054 hlua_class_function(L, "get_priv", hlua_get_priv);
9055 hlua_class_function(L, "set_var", hlua_set_var);
9056 hlua_class_function(L, "unset_var", hlua_unset_var);
9057 hlua_class_function(L, "get_var", hlua_get_var);
9058 hlua_class_function(L, "done", hlua_txn_done);
9059 hlua_class_function(L, "reply", hlua_txn_reply_new);
9060 hlua_class_function(L, "set_loglevel", hlua_txn_set_loglevel);
9061 hlua_class_function(L, "set_tos", hlua_txn_set_tos);
9062 hlua_class_function(L, "set_mark", hlua_txn_set_mark);
9063 hlua_class_function(L, "set_priority_class", hlua_txn_set_priority_class);
9064 hlua_class_function(L, "set_priority_offset", hlua_txn_set_priority_offset);
9065 hlua_class_function(L, "deflog", hlua_txn_deflog);
9066 hlua_class_function(L, "log", hlua_txn_log);
9067 hlua_class_function(L, "Debug", hlua_txn_log_debug);
9068 hlua_class_function(L, "Info", hlua_txn_log_info);
9069 hlua_class_function(L, "Warning", hlua_txn_log_warning);
9070 hlua_class_function(L, "Alert", hlua_txn_log_alert);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01009071
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009072 lua_rawset(L, -3);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01009073
9074 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009075 class_txn_ref = hlua_register_metatable(L, CLASS_TXN);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009076
9077 /*
9078 *
Christopher Faulet700d9e82020-01-31 12:21:52 +01009079 * Register class reply
9080 *
9081 */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009082 lua_newtable(L);
9083 lua_pushstring(L, "__index");
9084 lua_newtable(L);
9085 hlua_class_function(L, "set_status", hlua_txn_reply_set_status);
9086 hlua_class_function(L, "add_header", hlua_txn_reply_add_header);
9087 hlua_class_function(L, "del_header", hlua_txn_reply_del_header);
9088 hlua_class_function(L, "set_body", hlua_txn_reply_set_body);
9089 lua_settable(L, -3); /* Sets the __index entry. */
9090 class_txn_reply_ref = luaL_ref(L, LUA_REGISTRYINDEX);
Christopher Faulet700d9e82020-01-31 12:21:52 +01009091
9092
9093 /*
9094 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009095 * Register class Socket
9096 *
9097 */
9098
9099 /* Create and fill the metatable. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009100 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009101
Ilya Shipitsind4259502020-04-08 01:07:56 +05009102 /* Create and fill the __index entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009103 lua_pushstring(L, "__index");
9104 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009105
Baptiste Assmann84bb4932015-03-02 21:40:06 +01009106#ifdef USE_OPENSSL
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009107 hlua_class_function(L, "connect_ssl", hlua_socket_connect_ssl);
Baptiste Assmann84bb4932015-03-02 21:40:06 +01009108#endif
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009109 hlua_class_function(L, "connect", hlua_socket_connect);
9110 hlua_class_function(L, "send", hlua_socket_send);
9111 hlua_class_function(L, "receive", hlua_socket_receive);
9112 hlua_class_function(L, "close", hlua_socket_close);
9113 hlua_class_function(L, "getpeername", hlua_socket_getpeername);
9114 hlua_class_function(L, "getsockname", hlua_socket_getsockname);
9115 hlua_class_function(L, "setoption", hlua_socket_setoption);
9116 hlua_class_function(L, "settimeout", hlua_socket_settimeout);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009117
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009118 lua_rawset(L, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009119
9120 /* Register the garbage collector entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009121 lua_pushstring(L, "__gc");
9122 lua_pushcclosure(L, hlua_socket_gc, 0);
9123 lua_rawset(L, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009124
9125 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier1eac28f2020-11-28 12:26:24 +01009126 class_socket_ref = hlua_register_metatable(L, CLASS_SOCKET);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009127
Thierry Fournieraafc7772020-12-04 11:47:47 +01009128 lua_atpanic(L, hlua_panic_safe);
9129
9130 return L;
9131}
9132
9133void hlua_init(void) {
9134 int i;
9135 int idx;
9136#ifdef USE_OPENSSL
9137 struct srv_kw *kw;
9138 int tmp_error;
9139 char *error;
9140 char *args[] = { /* SSL client configuration. */
9141 "ssl",
9142 "verify",
9143 "none",
9144 NULL
9145 };
9146#endif
9147
9148 /* Init post init function list head */
9149 for (i = 0; i < MAX_THREADS + 1; i++)
9150 LIST_INIT(&hlua_init_functions[i]);
9151
9152 /* Init state for common/shared lua parts */
9153 hlua_state_id = 0;
9154 ha_set_tid(0);
9155 hlua_states[0] = hlua_init_state(0);
9156
9157 /* Init state 1 for thread 0. We have at least one thread. */
9158 hlua_state_id = 1;
9159 ha_set_tid(0);
9160 hlua_states[1] = hlua_init_state(1);
9161
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009162 /* Proxy and server configuration initialisation. */
9163 memset(&socket_proxy, 0, sizeof(socket_proxy));
9164 init_new_proxy(&socket_proxy);
9165 socket_proxy.parent = NULL;
9166 socket_proxy.last_change = now.tv_sec;
9167 socket_proxy.id = "LUA-SOCKET";
9168 socket_proxy.cap = PR_CAP_FE | PR_CAP_BE;
9169 socket_proxy.maxconn = 0;
9170 socket_proxy.accept = NULL;
9171 socket_proxy.options2 |= PR_O2_INDEPSTR;
9172 socket_proxy.srv = NULL;
9173 socket_proxy.conn_retries = 0;
9174 socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */
9175
9176 /* Init TCP server: unchanged parameters */
9177 memset(&socket_tcp, 0, sizeof(socket_tcp));
9178 socket_tcp.next = NULL;
9179 socket_tcp.proxy = &socket_proxy;
9180 socket_tcp.obj_type = OBJ_TYPE_SERVER;
9181 LIST_INIT(&socket_tcp.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04009182 socket_tcp.pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02009183 socket_tcp.idle_conns = NULL;
9184 socket_tcp.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02009185 socket_tcp.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009186 socket_tcp.last_change = 0;
9187 socket_tcp.id = "LUA-TCP-CONN";
9188 socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
9189 socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
9190 socket_tcp.pp_opts = 0; /* Remove proxy protocol. */
9191
9192 /* XXX: Copy default parameter from default server,
9193 * but the default server is not initialized.
9194 */
9195 socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue;
9196 socket_tcp.minconn = socket_proxy.defsrv.minconn;
9197 socket_tcp.maxconn = socket_proxy.defsrv.maxconn;
9198 socket_tcp.slowstart = socket_proxy.defsrv.slowstart;
9199 socket_tcp.onerror = socket_proxy.defsrv.onerror;
9200 socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
9201 socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup;
9202 socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
9203 socket_tcp.uweight = socket_proxy.defsrv.iweight;
9204 socket_tcp.iweight = socket_proxy.defsrv.iweight;
9205
9206 socket_tcp.check.status = HCHK_STATUS_INI;
9207 socket_tcp.check.rise = socket_proxy.defsrv.check.rise;
9208 socket_tcp.check.fall = socket_proxy.defsrv.check.fall;
9209 socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */
9210 socket_tcp.check.server = &socket_tcp;
9211
9212 socket_tcp.agent.status = HCHK_STATUS_INI;
9213 socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise;
9214 socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall;
9215 socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */
9216 socket_tcp.agent.server = &socket_tcp;
9217
Willy Tarreaua261e9b2016-12-22 20:44:00 +01009218 socket_tcp.xprt = xprt_get(XPRT_RAW);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009219
9220#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009221 /* Init TCP server: unchanged parameters */
9222 memset(&socket_ssl, 0, sizeof(socket_ssl));
9223 socket_ssl.next = NULL;
9224 socket_ssl.proxy = &socket_proxy;
9225 socket_ssl.obj_type = OBJ_TYPE_SERVER;
9226 LIST_INIT(&socket_ssl.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04009227 socket_ssl.pendconns = EB_ROOT;
Willy Tarreaub784b352019-02-07 14:48:24 +01009228 socket_ssl.idle_conns = NULL;
9229 socket_ssl.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02009230 socket_ssl.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009231 socket_ssl.last_change = 0;
9232 socket_ssl.id = "LUA-SSL-CONN";
9233 socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
9234 socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
9235 socket_ssl.pp_opts = 0; /* Remove proxy protocol. */
9236
9237 /* XXX: Copy default parameter from default server,
9238 * but the default server is not initialized.
9239 */
9240 socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue;
9241 socket_ssl.minconn = socket_proxy.defsrv.minconn;
9242 socket_ssl.maxconn = socket_proxy.defsrv.maxconn;
9243 socket_ssl.slowstart = socket_proxy.defsrv.slowstart;
9244 socket_ssl.onerror = socket_proxy.defsrv.onerror;
9245 socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
9246 socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup;
9247 socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
9248 socket_ssl.uweight = socket_proxy.defsrv.iweight;
9249 socket_ssl.iweight = socket_proxy.defsrv.iweight;
9250
9251 socket_ssl.check.status = HCHK_STATUS_INI;
9252 socket_ssl.check.rise = socket_proxy.defsrv.check.rise;
9253 socket_ssl.check.fall = socket_proxy.defsrv.check.fall;
9254 socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */
9255 socket_ssl.check.server = &socket_ssl;
9256
9257 socket_ssl.agent.status = HCHK_STATUS_INI;
9258 socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise;
9259 socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall;
9260 socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */
9261 socket_ssl.agent.server = &socket_ssl;
9262
Thierry FOURNIER36d13742015-03-17 16:48:53 +01009263 socket_ssl.use_ssl = 1;
Willy Tarreaua261e9b2016-12-22 20:44:00 +01009264 socket_ssl.xprt = xprt_get(XPRT_SSL);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009265
Thierry FOURNIER36d13742015-03-17 16:48:53 +01009266 for (idx = 0; args[idx] != NULL; idx++) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009267 if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */
9268 /*
9269 *
9270 * If the keyword is not known, we can search in the registered
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08009271 * server keywords. This is useful to configure special SSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009272 * features like client certificates and ssl_verify.
9273 *
9274 */
9275 tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error);
9276 if (tmp_error != 0) {
9277 fprintf(stderr, "INTERNAL ERROR: %s\n", error);
9278 abort(); /* This must be never arrives because the command line
9279 not editable by the user. */
9280 }
9281 idx += kw->skip;
9282 }
9283 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01009284#endif
Thierry Fournier75933d42016-01-21 09:30:18 +01009285
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01009286}
Willy Tarreaubb57d942016-12-21 19:04:56 +01009287
Tim Duesterhusd0c0ca22020-07-04 11:53:26 +02009288static void hlua_deinit()
9289{
Willy Tarreau186f3762020-12-04 11:48:12 +01009290 int thr;
9291
9292 for (thr = 0; thr < MAX_THREADS+1; thr++) {
9293 if (hlua_states[thr])
9294 lua_close(hlua_states[thr]);
9295 }
Tim Duesterhusd0c0ca22020-07-04 11:53:26 +02009296}
9297
9298REGISTER_POST_DEINIT(hlua_deinit);
9299
Willy Tarreau80713382018-11-26 10:19:54 +01009300static void hlua_register_build_options(void)
9301{
Willy Tarreaubb57d942016-12-21 19:04:56 +01009302 char *ptr = NULL;
Willy Tarreau80713382018-11-26 10:19:54 +01009303
Willy Tarreaubb57d942016-12-21 19:04:56 +01009304 memprintf(&ptr, "Built with Lua version : %s", LUA_RELEASE);
9305 hap_register_build_opts(ptr, 1);
9306}
Willy Tarreau80713382018-11-26 10:19:54 +01009307
9308INITCALL0(STG_REGISTER, hlua_register_build_options);