blob: b3b93e8d0a62615fe2ab807dc5233777b31204ae [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
127#define SET_SAFE_LJMP(__L) \
128 ({ \
129 int ret; \
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100130 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200131 if (setjmp(safe_ljmp_env) != 0) { \
132 lua_atpanic(__L, hlua_panic_safe); \
133 ret = 0; \
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100134 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200135 } else { \
136 lua_atpanic(__L, hlua_panic_ljmp); \
137 ret = 1; \
138 } \
139 ret; \
140 })
141
142/* If we are the last function catching Lua errors, we
143 * must reset the panic function.
144 */
145#define RESET_SAFE_LJMP(__L) \
146 do { \
147 lua_atpanic(__L, hlua_panic_safe); \
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100148 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200149 } while(0)
150
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200151/* Applet status flags */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200152#define APPLET_DONE 0x01 /* applet processing is done. */
Christopher Faulet18c2e8d2019-03-01 12:02:08 +0100153/* unused: 0x02 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200154#define APPLET_HDR_SENT 0x04 /* Response header sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +0200155/* unused: 0x08, 0x10 */
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +0100156#define APPLET_HTTP11 0x20 /* Last chunk sent. */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +0100157#define APPLET_RSP_SENT 0x40 /* The response was fully sent */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200158
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100159/* The main Lua execution context. */
160struct hlua gL;
161
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100162/* This is the memory pool containing struct lua for applets
163 * (including cli).
164 */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100165DECLARE_STATIC_POOL(pool_head_hlua, "hlua", sizeof(struct hlua));
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100166
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100167/* Used for Socket connection. */
168static struct proxy socket_proxy;
169static struct server socket_tcp;
170#ifdef USE_OPENSSL
171static struct server socket_ssl;
172#endif
173
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100174/* List head of the function called at the initialisation time. */
175struct list hlua_init_functions = LIST_HEAD_INIT(hlua_init_functions);
176
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100177/* The following variables contains the reference of the different
178 * Lua classes. These references are useful for identify metadata
179 * associated with an object.
180 */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100181static int class_txn_ref;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100182static int class_socket_ref;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +0100183static int class_channel_ref;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +0100184static int class_fetches_ref;
Thierry FOURNIER594afe72015-03-10 23:58:30 +0100185static int class_converters_ref;
Thierry FOURNIER08504f42015-03-16 14:17:08 +0100186static int class_http_ref;
Thierry FOURNIER3def3932015-04-07 11:27:54 +0200187static int class_map_ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200188static int class_applet_tcp_ref;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200189static int class_applet_http_ref;
Christopher Faulet700d9e82020-01-31 12:21:52 +0100190static int class_txn_reply_ref;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100191
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100192/* Global Lua execution timeout. By default Lua, execution linked
Willy Tarreau87b09662015-04-03 00:22:06 +0200193 * with stream (actions, sample-fetches and converters) have a
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100194 * short timeout. Lua linked with tasks doesn't have a timeout
195 * because a task may remain alive during all the haproxy execution.
196 */
197static unsigned int hlua_timeout_session = 4000; /* session timeout. */
198static unsigned int hlua_timeout_task = TICK_ETERNITY; /* task timeout. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200199static unsigned int hlua_timeout_applet = 4000; /* applet timeout. */
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100200
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100201/* Interrupts the Lua processing each "hlua_nb_instruction" instructions.
202 * it is used for preventing infinite loops.
203 *
204 * I test the scheer with an infinite loop containing one incrementation
205 * and one test. I run this loop between 10 seconds, I raise a ceil of
206 * 710M loops from one interrupt each 9000 instructions, so I fix the value
207 * to one interrupt each 10 000 instructions.
208 *
209 * configured | Number of
210 * instructions | loops executed
211 * between two | in milions
212 * forced yields |
213 * ---------------+---------------
214 * 10 | 160
215 * 500 | 670
216 * 1000 | 680
217 * 5000 | 700
218 * 7000 | 700
219 * 8000 | 700
220 * 9000 | 710 <- ceil
221 * 10000 | 710
222 * 100000 | 710
223 * 1000000 | 710
224 *
225 */
226static unsigned int hlua_nb_instruction = 10000;
227
Willy Tarreau32f61e22015-03-18 17:54:59 +0100228/* Descriptor for the memory allocation state. If limit is not null, it will
229 * be enforced on any memory allocation.
230 */
231struct hlua_mem_allocator {
232 size_t allocated;
233 size_t limit;
234};
235
236static struct hlua_mem_allocator hlua_global_allocator;
237
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100238/* These functions converts types between HAProxy internal args or
239 * sample and LUA types. Another function permits to check if the
240 * LUA stack contains arguments according with an required ARG_T
241 * format.
242 */
243static int hlua_arg2lua(lua_State *L, const struct arg *arg);
244static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100245__LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100246 uint64_t mask, struct proxy *p);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100247static int hlua_smp2lua(lua_State *L, struct sample *smp);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100248static int hlua_smp2lua_str(lua_State *L, struct sample *smp);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100249static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp);
250
Christopher Faulet9d1332b2020-02-24 16:46:16 +0100251__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200252
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200253#define SEND_ERR(__be, __fmt, __args...) \
254 do { \
255 send_log(__be, LOG_ERR, __fmt, ## __args); \
256 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) \
Christopher Faulet767a84b2017-11-24 16:50:31 +0100257 ha_alert(__fmt, ## __args); \
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200258 } while (0)
259
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100260/* Used to check an Lua function type in the stack. It creates and
261 * returns a reference of the function. This function throws an
262 * error if the rgument is not a "function".
263 */
264__LJMP unsigned int hlua_checkfunction(lua_State *L, int argno)
265{
266 if (!lua_isfunction(L, argno)) {
Thierry FOURNIERfd1e9552018-02-23 18:41:18 +0100267 const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, argno));
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100268 WILL_LJMP(luaL_argerror(L, argno, msg));
269 }
270 lua_pushvalue(L, argno);
271 return luaL_ref(L, LUA_REGISTRYINDEX);
272}
273
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200274/* Return the string that is of the top of the stack. */
275const char *hlua_get_top_error_string(lua_State *L)
276{
277 if (lua_gettop(L) < 1)
278 return "unknown error";
279 if (lua_type(L, -1) != LUA_TSTRING)
280 return "unknown error";
281 return lua_tostring(L, -1);
282}
283
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200284__LJMP static const char *hlua_traceback(lua_State *L)
285{
286 lua_Debug ar;
287 int level = 0;
Willy Tarreau83061a82018-07-13 11:56:34 +0200288 struct buffer *msg = get_trash_chunk();
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200289 int filled = 0;
290
291 while (lua_getstack(L, level++, &ar)) {
292
293 /* Add separator */
294 if (filled)
295 chunk_appendf(msg, ", ");
296 filled = 1;
297
298 /* Fill fields:
299 * 'S': fills in the fields source, short_src, linedefined, lastlinedefined, and what;
300 * 'l': fills in the field currentline;
301 * 'n': fills in the field name and namewhat;
302 * 't': fills in the field istailcall;
303 */
304 lua_getinfo(L, "Slnt", &ar);
305
306 /* Append code localisation */
307 if (ar.currentline > 0)
308 chunk_appendf(msg, "%s:%d ", ar.short_src, ar.currentline);
309 else
310 chunk_appendf(msg, "%s ", ar.short_src);
311
312 /*
313 * Get function name
314 *
315 * if namewhat is no empty, name is defined.
316 * what contains "Lua" for Lua function, "C" for C function,
317 * or "main" for main code.
318 */
319 if (*ar.namewhat != '\0' && ar.name != NULL) /* is there a name from code? */
320 chunk_appendf(msg, "%s '%s'", ar.namewhat, ar.name); /* use it */
321
322 else if (*ar.what == 'm') /* "main", the code is not executed in a function */
323 chunk_appendf(msg, "main chunk");
324
325 else if (*ar.what != 'C') /* for Lua functions, use <file:line> */
326 chunk_appendf(msg, "C function line %d", ar.linedefined);
327
328 else /* nothing left... */
329 chunk_appendf(msg, "?");
330
331
332 /* Display tailed call */
333 if (ar.istailcall)
334 chunk_appendf(msg, " ...");
335 }
336
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200337 return msg->area;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200338}
339
340
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100341/* This function check the number of arguments available in the
342 * stack. If the number of arguments available is not the same
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500343 * then <nb> an error is thrown.
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100344 */
345__LJMP static inline void check_args(lua_State *L, int nb, char *fcn)
346{
347 if (lua_gettop(L) == nb)
348 return;
349 WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb));
350}
351
Mark Lakes22154b42018-01-29 14:38:40 -0800352/* This function pushes an error string prefixed by the file name
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100353 * and the line number where the error is encountered.
354 */
355static int hlua_pusherror(lua_State *L, const char *fmt, ...)
356{
357 va_list argp;
358 va_start(argp, fmt);
359 luaL_where(L, 1);
360 lua_pushvfstring(L, fmt, argp);
361 va_end(argp);
362 lua_concat(L, 2);
363 return 1;
364}
365
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100366/* This functions is used with sample fetch and converters. It
367 * converts the HAProxy configuration argument in a lua stack
368 * values.
369 *
370 * It takes an array of "arg", and each entry of the array is
371 * converted and pushed in the LUA stack.
372 */
373static int hlua_arg2lua(lua_State *L, const struct arg *arg)
374{
375 switch (arg->type) {
376 case ARGT_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100377 case ARGT_TIME:
378 case ARGT_SIZE:
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100379 lua_pushinteger(L, arg->data.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100380 break;
381
382 case ARGT_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200383 lua_pushlstring(L, arg->data.str.area, arg->data.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100384 break;
385
386 case ARGT_IPV4:
387 case ARGT_IPV6:
388 case ARGT_MSK4:
389 case ARGT_MSK6:
390 case ARGT_FE:
391 case ARGT_BE:
392 case ARGT_TAB:
393 case ARGT_SRV:
394 case ARGT_USR:
395 case ARGT_MAP:
396 default:
397 lua_pushnil(L);
398 break;
399 }
400 return 1;
401}
402
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500403/* This function take one entry in an LUA stack at the index "ud",
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100404 * and try to convert it in an HAProxy argument entry. This is useful
Ilya Shipitsind4259502020-04-08 01:07:56 +0500405 * with sample fetch wrappers. The input arguments are given to the
406 * lua wrapper and converted as arg list by the function.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100407 */
408static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg)
409{
410 switch (lua_type(L, ud)) {
411
412 case LUA_TNUMBER:
413 case LUA_TBOOLEAN:
414 arg->type = ARGT_SINT;
415 arg->data.sint = lua_tointeger(L, ud);
416 break;
417
418 case LUA_TSTRING:
419 arg->type = ARGT_STR;
Tim Duesterhus2e89dec2019-09-29 23:03:08 +0200420 arg->data.str.area = (char *)lua_tolstring(L, ud, &arg->data.str.data);
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200421 /* We don't know the actual size of the underlying allocation, so be conservative. */
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200422 arg->data.str.size = arg->data.str.data+1; /* count the terminating null byte */
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200423 arg->data.str.head = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100424 break;
425
426 case LUA_TUSERDATA:
427 case LUA_TNIL:
428 case LUA_TTABLE:
429 case LUA_TFUNCTION:
430 case LUA_TTHREAD:
431 case LUA_TLIGHTUSERDATA:
432 arg->type = ARGT_SINT;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200433 arg->data.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100434 break;
435 }
436 return 1;
437}
438
439/* the following functions are used to convert a struct sample
440 * in Lua type. This useful to convert the return of the
Ilya Shipitsind4259502020-04-08 01:07:56 +0500441 * fetches or converters.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100442 */
Willy Tarreau5eadada2015-03-10 17:28:54 +0100443static int hlua_smp2lua(lua_State *L, struct sample *smp)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100444{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200445 switch (smp->data.type) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100446 case SMP_T_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100447 case SMP_T_BOOL:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200448 lua_pushinteger(L, smp->data.u.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100449 break;
450
451 case SMP_T_BIN:
452 case SMP_T_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200453 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100454 break;
455
456 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200457 switch (smp->data.u.meth.meth) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100458 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
459 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
460 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
461 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
462 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
463 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
464 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
465 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
466 case HTTP_METH_OTHER:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200467 lua_pushlstring(L, smp->data.u.meth.str.area, smp->data.u.meth.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100468 break;
469 default:
470 lua_pushnil(L);
471 break;
472 }
473 break;
474
475 case SMP_T_IPV4:
476 case SMP_T_IPV6:
477 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200478 if (sample_casts[smp->data.type][SMP_T_STR] &&
479 sample_casts[smp->data.type][SMP_T_STR](smp))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200480 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100481 else
482 lua_pushnil(L);
483 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100484 default:
485 lua_pushnil(L);
486 break;
487 }
488 return 1;
489}
490
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100491/* the following functions are used to convert a struct sample
492 * in Lua strings. This is useful to convert the return of the
Ilya Shipitsind4259502020-04-08 01:07:56 +0500493 * fetches or converters.
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100494 */
495static int hlua_smp2lua_str(lua_State *L, struct sample *smp)
496{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200497 switch (smp->data.type) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100498
499 case SMP_T_BIN:
500 case SMP_T_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200501 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100502 break;
503
504 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200505 switch (smp->data.u.meth.meth) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100506 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
507 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
508 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
509 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
510 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
511 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
512 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
513 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
514 case HTTP_METH_OTHER:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200515 lua_pushlstring(L, smp->data.u.meth.str.area, smp->data.u.meth.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100516 break;
517 default:
518 lua_pushstring(L, "");
519 break;
520 }
521 break;
522
523 case SMP_T_SINT:
524 case SMP_T_BOOL:
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100525 case SMP_T_IPV4:
526 case SMP_T_IPV6:
527 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200528 if (sample_casts[smp->data.type][SMP_T_STR] &&
529 sample_casts[smp->data.type][SMP_T_STR](smp))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200530 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100531 else
532 lua_pushstring(L, "");
533 break;
534 default:
535 lua_pushstring(L, "");
536 break;
537 }
538 return 1;
539}
540
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100541/* the following functions are used to convert an Lua type in a
542 * struct sample. This is useful to provide data from a converter
543 * to the LUA code.
544 */
545static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp)
546{
547 switch (lua_type(L, ud)) {
548
549 case LUA_TNUMBER:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200550 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200551 smp->data.u.sint = lua_tointeger(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100552 break;
553
554
555 case LUA_TBOOLEAN:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200556 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200557 smp->data.u.sint = lua_toboolean(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100558 break;
559
560 case LUA_TSTRING:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200561 smp->data.type = SMP_T_STR;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100562 smp->flags |= SMP_F_CONST;
Tim Duesterhus2e89dec2019-09-29 23:03:08 +0200563 smp->data.u.str.area = (char *)lua_tolstring(L, ud, &smp->data.u.str.data);
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200564 /* We don't know the actual size of the underlying allocation, so be conservative. */
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200565 smp->data.u.str.size = smp->data.u.str.data+1; /* count the terminating null byte */
Tim Duesterhus29d2e8a2019-09-29 23:03:07 +0200566 smp->data.u.str.head = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100567 break;
568
569 case LUA_TUSERDATA:
570 case LUA_TNIL:
571 case LUA_TTABLE:
572 case LUA_TFUNCTION:
573 case LUA_TTHREAD:
574 case LUA_TLIGHTUSERDATA:
Thierry FOURNIER93405e12015-08-26 14:19:03 +0200575 case LUA_TNONE:
576 default:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200577 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200578 smp->data.u.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100579 break;
580 }
581 return 1;
582}
583
Ilya Shipitsind4259502020-04-08 01:07:56 +0500584/* This function check the "argp" built by another conversion function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800585 * is in accord with the expected argp defined by the "mask". The function
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100586 * returns true or false. It can be adjust the types if there compatibles.
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100587 *
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500588 * This function assumes that the argp argument contains ARGM_NBARGS + 1
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100589 * entries.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100590 */
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100591__LJMP int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100592 uint64_t mask, struct proxy *p)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100593{
594 int min_arg;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200595 int i, idx;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100596 struct proxy *px;
Christopher Fauletd25d9262020-08-06 11:04:46 +0200597 struct userlist *ul;
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200598 struct my_regex *reg;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200599 const char *msg = NULL;
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200600 char *sname, *pname, *err = NULL;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100601
602 idx = 0;
603 min_arg = ARGM(mask);
604 mask >>= ARGM_BITS;
605
606 while (1) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200607 struct buffer tmp = BUF_NULL;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100608
609 /* Check oversize. */
610 if (idx >= ARGM_NBARGS && argp[idx].type != ARGT_STOP) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200611 msg = "Malformed argument mask";
612 goto error;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100613 }
614
615 /* Check for mandatory arguments. */
616 if (argp[idx].type == ARGT_STOP) {
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100617 if (idx < min_arg) {
618
619 /* If miss other argument than the first one, we return an error. */
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200620 if (idx > 0) {
621 msg = "Mandatory argument expected";
622 goto error;
623 }
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100624
625 /* If first argument have a certain type, some default values
626 * may be used. See the function smp_resolve_args().
627 */
628 switch (mask & ARGT_MASK) {
629
630 case ARGT_FE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200631 if (!(p->cap & PR_CAP_FE)) {
632 msg = "Mandatory argument expected";
633 goto error;
634 }
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100635 argp[idx].data.prx = p;
636 argp[idx].type = ARGT_FE;
637 argp[idx+1].type = ARGT_STOP;
638 break;
639
640 case ARGT_BE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200641 if (!(p->cap & PR_CAP_BE)) {
642 msg = "Mandatory argument expected";
643 goto error;
644 }
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100645 argp[idx].data.prx = p;
646 argp[idx].type = ARGT_BE;
647 argp[idx+1].type = ARGT_STOP;
648 break;
649
650 case ARGT_TAB:
651 argp[idx].data.prx = p;
652 argp[idx].type = ARGT_TAB;
653 argp[idx+1].type = ARGT_STOP;
654 break;
655
656 default:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200657 msg = "Mandatory argument expected";
658 goto error;
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100659 break;
660 }
661 }
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200662 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100663 }
664
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500665 /* Check for exceed the number of required argument. */
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100666 if ((mask & ARGT_MASK) == ARGT_STOP &&
667 argp[idx].type != ARGT_STOP) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200668 msg = "Last argument expected";
669 goto error;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100670 }
671
672 if ((mask & ARGT_MASK) == ARGT_STOP &&
673 argp[idx].type == ARGT_STOP) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200674 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100675 }
676
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200677 /* Convert some argument types. All string in argp[] are for not
678 * duplicated yet.
679 */
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100680 switch (mask & ARGT_MASK) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100681 case ARGT_SINT:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200682 if (argp[idx].type != ARGT_SINT) {
683 msg = "integer expected";
684 goto error;
685 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100686 argp[idx].type = ARGT_SINT;
687 break;
688
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100689 case ARGT_TIME:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200690 if (argp[idx].type != ARGT_SINT) {
691 msg = "integer expected";
692 goto error;
693 }
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200694 argp[idx].type = ARGT_TIME;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100695 break;
696
697 case ARGT_SIZE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200698 if (argp[idx].type != ARGT_SINT) {
699 msg = "integer expected";
700 goto error;
701 }
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200702 argp[idx].type = ARGT_SIZE;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100703 break;
704
705 case ARGT_FE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200706 if (argp[idx].type != ARGT_STR) {
707 msg = "string expected";
708 goto error;
709 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200710 argp[idx].data.prx = proxy_fe_by_name(argp[idx].data.str.area);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200711 if (!argp[idx].data.prx) {
712 msg = "frontend doesn't exist";
713 goto error;
714 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100715 argp[idx].type = ARGT_FE;
716 break;
717
718 case ARGT_BE:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200719 if (argp[idx].type != ARGT_STR) {
720 msg = "string expected";
721 goto error;
722 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200723 argp[idx].data.prx = proxy_be_by_name(argp[idx].data.str.area);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200724 if (!argp[idx].data.prx) {
725 msg = "backend doesn't exist";
726 goto error;
727 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100728 argp[idx].type = ARGT_BE;
729 break;
730
731 case ARGT_TAB:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200732 if (argp[idx].type != ARGT_STR) {
733 msg = "string expected";
734 goto error;
735 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200736 argp[idx].data.t = stktable_find_by_name(argp[idx].data.str.area);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200737 if (!argp[idx].data.t) {
738 msg = "table doesn't exist";
739 goto error;
740 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100741 argp[idx].type = ARGT_TAB;
742 break;
743
744 case ARGT_SRV:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200745 if (argp[idx].type != ARGT_STR) {
746 msg = "string expected";
747 goto error;
748 }
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200749 sname = strrchr(argp[idx].data.str.area, '/');
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100750 if (sname) {
751 *sname++ = '\0';
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200752 pname = argp[idx].data.str.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200753 px = proxy_be_by_name(pname);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200754 if (!px) {
755 msg = "backend doesn't exist";
756 goto error;
757 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100758 }
759 else {
Christopher Fauletfdea1b62020-08-06 08:29:18 +0200760 sname = argp[idx].data.str.area;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100761 px = p;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100762 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100763 argp[idx].data.srv = findserver(px, sname);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200764 if (!argp[idx].data.srv) {
765 msg = "server doesn't exist";
766 goto error;
767 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100768 argp[idx].type = ARGT_SRV;
769 break;
770
771 case ARGT_IPV4:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200772 if (argp[idx].type != ARGT_STR) {
773 msg = "string expected";
774 goto error;
775 }
776 if (inet_pton(AF_INET, argp[idx].data.str.area, &argp[idx].data.ipv4)) {
777 msg = "invalid IPv4 address";
778 goto error;
779 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100780 argp[idx].type = ARGT_IPV4;
781 break;
782
783 case ARGT_MSK4:
Christopher Faulete663a6e2020-08-07 09:11:22 +0200784 if (argp[idx].type == ARGT_SINT)
785 len2mask4(argp[idx].data.sint, &argp[idx].data.ipv4);
786 else if (argp[idx].type == ARGT_STR) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200787 if (!str2mask(argp[idx].data.str.area, &argp[idx].data.ipv4)) {
788 msg = "invalid IPv4 mask";
789 goto error;
790 }
791 }
792 else {
793 msg = "integer or string expected";
794 goto error;
Christopher Faulete663a6e2020-08-07 09:11:22 +0200795 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100796 argp[idx].type = ARGT_MSK4;
797 break;
798
799 case ARGT_IPV6:
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200800 if (argp[idx].type != ARGT_STR) {
801 msg = "string expected";
802 goto error;
803 }
804 if (inet_pton(AF_INET6, argp[idx].data.str.area, &argp[idx].data.ipv6)) {
805 msg = "invalid IPv6 address";
806 goto error;
807 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100808 argp[idx].type = ARGT_IPV6;
809 break;
810
811 case ARGT_MSK6:
Christopher Faulete663a6e2020-08-07 09:11:22 +0200812 if (argp[idx].type == ARGT_SINT)
813 len2mask6(argp[idx].data.sint, &argp[idx].data.ipv6);
814 else if (argp[idx].type == ARGT_STR) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200815 if (!str2mask6(argp[idx].data.str.area, &argp[idx].data.ipv6)) {
816 msg = "invalid IPv6 mask";
817 goto error;
818 }
819 }
820 else {
821 msg = "integer or string expected";
822 goto error;
Christopher Faulete663a6e2020-08-07 09:11:22 +0200823 }
Tim Duesterhusb814da62018-01-25 16:24:50 +0100824 argp[idx].type = ARGT_MSK6;
825 break;
826
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200827 case ARGT_REG:
828 if (argp[idx].type != ARGT_STR) {
829 msg = "string expected";
830 goto error;
831 }
832 reg = regex_comp(argp[idx].data.str.area, !(argp[idx].type_flags & ARGF_REG_ICASE), 1, &err);
833 if (!reg) {
834 msg = lua_pushfstring(L, "error compiling regex '%s' : '%s'",
835 argp[idx].data.str.area, err);
836 free(err);
837 goto error;
838 }
839 argp[idx].type = ARGT_REG;
840 argp[idx].data.reg = reg;
841 break;
842
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100843 case ARGT_USR:
Christopher Fauletd25d9262020-08-06 11:04:46 +0200844 if (argp[idx].type != ARGT_STR) {
845 msg = "string expected";
846 goto error;
847 }
848 if (p->uri_auth && p->uri_auth->userlist &&
849 !strcmp(p->uri_auth->userlist->name, argp[idx].data.str.area))
850 ul = p->uri_auth->userlist;
851 else
852 ul = auth_find_userlist(argp[idx].data.str.area);
853
854 if (!ul) {
855 msg = lua_pushfstring(L, "unable to find userlist '%s'", argp[idx].data.str.area);
856 goto error;
857 }
858 argp[idx].type = ARGT_USR;
859 argp[idx].data.usr = ul;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200860 break;
861
862 case ARGT_STR:
863 if (!chunk_dup(&tmp, &argp[idx].data.str)) {
864 msg = "unable to duplicate string arg";
865 goto error;
866 }
867 argp[idx].data.str = tmp;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100868 break;
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200869
Christopher Fauletd25d9262020-08-06 11:04:46 +0200870 case ARGT_MAP:
Christopher Fauletd25d9262020-08-06 11:04:46 +0200871 msg = "type not yet supported";
872 goto error;
873 break;
874
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100875 }
876
877 /* Check for type of argument. */
878 if ((mask & ARGT_MASK) != argp[idx].type) {
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200879 msg = lua_pushfstring(L, "'%s' expected, got '%s'",
880 arg_type_names[(mask & ARGT_MASK)],
881 arg_type_names[argp[idx].type & ARGT_MASK]);
882 goto error;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100883 }
884
885 /* Next argument. */
886 mask >>= ARGT_BITS;
887 idx++;
888 }
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200889 return 0;
890
891 error:
892 for (i = 0; i < idx; i++) {
893 if (argp[i].type == ARGT_STR)
894 chunk_destroy(&argp[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +0200895 else if (argp[i].type == ARGT_REG)
896 regex_free(argp[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +0200897 }
898 WILL_LJMP(luaL_argerror(L, first + idx, msg));
899 return 0; /* Never reached */
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100900}
901
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100902/*
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500903 * The following functions are used to make correspondence between the the
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100904 * executed lua pointer and the "struct hlua *" that contain the context.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100905 *
906 * - hlua_gethlua : return the hlua context associated with an lua_State.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100907 * - hlua_sethlua : create the association between hlua context and lua_state.
908 */
909static inline struct hlua *hlua_gethlua(lua_State *L)
910{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100911 struct hlua **hlua = lua_getextraspace(L);
912 return *hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100913}
914static inline void hlua_sethlua(struct hlua *hlua)
915{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100916 struct hlua **hlua_store = lua_getextraspace(hlua->T);
917 *hlua_store = hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100918}
919
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100920/* This function is used to send logs. It try to send on screen (stderr)
921 * and on the default syslog server.
922 */
923static inline void hlua_sendlog(struct proxy *px, int level, const char *msg)
924{
925 struct tm tm;
926 char *p;
927
928 /* Cleanup the log message. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200929 p = trash.area;
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100930 for (; *msg != '\0'; msg++, p++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200931 if (p >= trash.area + trash.size - 1) {
Thierry FOURNIERccf00632015-09-16 12:47:03 +0200932 /* Break the message if exceed the buffer size. */
933 *(p-4) = ' ';
934 *(p-3) = '.';
935 *(p-2) = '.';
936 *(p-1) = '.';
937 break;
938 }
Willy Tarreau90807112020-02-25 08:16:33 +0100939 if (isprint((unsigned char)*msg))
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100940 *p = *msg;
941 else
942 *p = '.';
943 }
944 *p = '\0';
945
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200946 send_log(px, level, "%s\n", trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100947 if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
Willy Tarreaua678b432015-08-28 10:14:59 +0200948 get_localtime(date.tv_sec, &tm);
949 fprintf(stderr, "[%s] %03d/%02d%02d%02d (%d) : %s\n",
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100950 log_levels[level], tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec,
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200951 (int)getpid(), trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100952 fflush(stderr);
953 }
954}
955
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100956/* This function just ensure that the yield will be always
957 * returned with a timeout and permit to set some flags
958 */
959__LJMP void hlua_yieldk(lua_State *L, int nresults, int ctx,
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100960 lua_KFunction k, int timeout, unsigned int flags)
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100961{
962 struct hlua *hlua = hlua_gethlua(L);
963
964 /* Set the wake timeout. If timeout is required, we set
965 * the expiration time.
966 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +0200967 hlua->wake_time = timeout;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100968
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +0100969 hlua->flags |= flags;
970
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100971 /* Process the yield. */
Willy Tarreau9635e032018-10-16 17:52:55 +0200972 MAY_LJMP(lua_yieldk(L, nresults, ctx, k));
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100973}
974
Willy Tarreau87b09662015-04-03 00:22:06 +0200975/* This function initialises the Lua environment stored in the stream.
976 * It must be called at the start of the stream. This function creates
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100977 * an LUA coroutine. It can not be use to crete the main LUA context.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200978 *
979 * This function is particular. it initialises a new Lua thread. If the
980 * initialisation fails (example: out of memory error), the lua function
981 * throws an error (longjmp).
982 *
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100983 * In some case (at least one), this function can be called from safe
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500984 * environment, so we must not initialise it. While the support of
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100985 * threads appear, the safe environment set a lock to ensure only one
986 * Lua execution at a time. If we initialize safe environment in another
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500987 * safe environment, we have a dead lock.
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100988 *
989 * set "already_safe" true if the context is initialized form safe
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500990 * Lua function.
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100991 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800992 * This function manipulates two Lua stacks: the main and the thread. Only
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200993 * the main stack can fail. The thread is not manipulated. This function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800994 * MUST NOT manipulate the created thread stack state, because it is not
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500995 * protected against errors thrown by the thread stack.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100996 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100997int hlua_ctx_init(struct hlua *lua, struct task *task, int already_safe)
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100998{
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100999 if (!already_safe) {
1000 if (!SET_SAFE_LJMP(gL.T)) {
1001 lua->Tref = LUA_REFNIL;
1002 return 0;
1003 }
Thierry FOURNIERbabae282015-09-17 11:36:37 +02001004 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001005 lua->Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001006 lua->flags = 0;
Willy Tarreauf31af932020-01-14 09:59:38 +01001007 lua->gc_count = 0;
Christopher Fauletbc275a92020-02-26 14:55:16 +01001008 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001009 LIST_INIT(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001010 lua->T = lua_newthread(gL.T);
1011 if (!lua->T) {
1012 lua->Tref = LUA_REFNIL;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001013 if (!already_safe)
1014 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001015 return 0;
1016 }
1017 hlua_sethlua(lua);
1018 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
1019 lua->task = task;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001020 if (!already_safe)
1021 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001022 return 1;
1023}
1024
Willy Tarreau87b09662015-04-03 00:22:06 +02001025/* Used to destroy the Lua coroutine when the attached stream or task
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001026 * is destroyed. The destroy also the memory context. The struct "lua"
1027 * is not freed.
1028 */
1029void hlua_ctx_destroy(struct hlua *lua)
1030{
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001031 if (!lua)
Thierry FOURNIERa718b292015-03-04 16:48:34 +01001032 return;
1033
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001034 if (!lua->T)
1035 goto end;
1036
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001037 /* Purge all the pending signals. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001038 notification_purge(&lua->com);
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001039
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001040 if (!SET_SAFE_LJMP(lua->T))
1041 return;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001042 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001043 RESET_SAFE_LJMP(lua->T);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001044
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001045 if (!SET_SAFE_LJMP(gL.T))
1046 return;
1047 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
1048 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001049 /* Forces a garbage collecting process. If the Lua program is finished
1050 * without error, we run the GC on the thread pointer. Its freed all
1051 * the unused memory.
1052 * If the thread is finnish with an error or is currently yielded,
1053 * it seems that the GC applied on the thread doesn't clean anything,
1054 * so e run the GC on the main thread.
1055 * NOTE: maybe this action locks all the Lua threads untiml the en of
1056 * the garbage collection.
1057 */
Willy Tarreauf31af932020-01-14 09:59:38 +01001058 if (lua->gc_count) {
Thierry FOURNIER7bd10d52017-07-17 00:44:40 +02001059 if (!SET_SAFE_LJMP(gL.T))
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001060 return;
Thierry FOURNIER7bd10d52017-07-17 00:44:40 +02001061 lua_gc(gL.T, LUA_GCCOLLECT, 0);
1062 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02001063 }
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001064
Thierry FOURNIERa7b536b2015-09-21 22:50:24 +02001065 lua->T = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001066
1067end:
Willy Tarreaubafbe012017-11-24 17:34:44 +01001068 pool_free(pool_head_hlua, lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001069}
1070
1071/* This function is used to restore the Lua context when a coroutine
1072 * fails. This function copy the common memory between old coroutine
1073 * and the new coroutine. The old coroutine is destroyed, and its
1074 * replaced by the new coroutine.
1075 * If the flag "keep_msg" is set, the last entry of the old is assumed
1076 * as string error message and it is copied in the new stack.
1077 */
1078static int hlua_ctx_renew(struct hlua *lua, int keep_msg)
1079{
1080 lua_State *T;
1081 int new_ref;
1082
1083 /* Renew the main LUA stack doesn't have sense. */
1084 if (lua == &gL)
1085 return 0;
1086
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001087 /* New Lua coroutine. */
1088 T = lua_newthread(gL.T);
1089 if (!T)
1090 return 0;
1091
1092 /* Copy last error message. */
1093 if (keep_msg)
1094 lua_xmove(lua->T, T, 1);
1095
1096 /* Copy data between the coroutines. */
1097 lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1098 lua_xmove(lua->T, T, 1);
Ilya Shipitsin46a030c2020-07-05 16:36:08 +05001099 new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Value popped. */
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001100
1101 /* Destroy old data. */
1102 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1103
1104 /* The thread is garbage collected by Lua. */
1105 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
1106
1107 /* Fill the struct with the new coroutine values. */
1108 lua->Mref = new_ref;
1109 lua->T = T;
1110 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
1111
1112 /* Set context. */
1113 hlua_sethlua(lua);
1114
1115 return 1;
1116}
1117
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001118void hlua_hook(lua_State *L, lua_Debug *ar)
1119{
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001120 struct hlua *hlua = hlua_gethlua(L);
1121
1122 /* Lua cannot yield when its returning from a function,
1123 * so, we can fix the interrupt hook to 1 instruction,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001124 * expecting that the function is finished.
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001125 */
1126 if (lua_gethookmask(L) & LUA_MASKRET) {
1127 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, 1);
1128 return;
1129 }
1130
1131 /* restore the interrupt condition. */
1132 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1133
1134 /* If we interrupt the Lua processing in yieldable state, we yield.
1135 * If the state is not yieldable, trying yield causes an error.
1136 */
1137 if (lua_isyieldable(L))
Willy Tarreau9635e032018-10-16 17:52:55 +02001138 MAY_LJMP(hlua_yieldk(L, 0, 0, NULL, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001139
Thierry FOURNIERa85cfb12015-03-13 14:50:06 +01001140 /* If we cannot yield, update the clock and check the timeout. */
1141 tv_update_date(0, 1);
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001142 hlua->run_time += now_ms - hlua->start_time;
1143 if (hlua->max_time && hlua->run_time >= hlua->max_time) {
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001144 lua_pushfstring(L, "execution timeout");
1145 WILL_LJMP(lua_error(L));
1146 }
1147
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001148 /* Update the start time. */
1149 hlua->start_time = now_ms;
1150
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001151 /* Try to interrupt the process at the end of the current
1152 * unyieldable function.
1153 */
1154 lua_sethook(hlua->T, hlua_hook, LUA_MASKRET|LUA_MASKCOUNT, hlua_nb_instruction);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001155}
1156
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001157/* This function start or resumes the Lua stack execution. If the flag
1158 * "yield_allowed" if no set and the LUA stack execution returns a yield
1159 * The function return an error.
1160 *
1161 * The function can returns 4 values:
1162 * - HLUA_E_OK : The execution is terminated without any errors.
1163 * - HLUA_E_AGAIN : The execution must continue at the next associated
1164 * task wakeup.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001165 * - HLUA_E_ERRMSG : An error has occurred, an error message is set in
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001166 * the top of the stack.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001167 * - HLUA_E_ERR : An error has occurred without error message.
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001168 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001169 * If an error occurred, the stack is renewed and it is ready to run new
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001170 * LUA code.
1171 */
1172static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed)
1173{
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001174#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
1175 int nres;
1176#endif
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001177 int ret;
1178 const char *msg;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001179 const char *trace;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001180
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001181 /* Initialise run time counter. */
1182 if (!HLUA_IS_RUNNING(lua))
1183 lua->run_time = 0;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001184
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001185 /* Lock the whole Lua execution. This lock must be before the
1186 * label "resume_execution".
1187 */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001188 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001189
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001190resume_execution:
1191
1192 /* This hook interrupts the Lua processing each 'hlua_nb_instruction'
1193 * instructions. it is used for preventing infinite loops.
1194 */
1195 lua_sethook(lua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1196
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001197 /* Remove all flags except the running flags. */
Thierry FOURNIER2f3867f2015-09-28 01:02:01 +02001198 HLUA_SET_RUN(lua);
1199 HLUA_CLR_CTRLYIELD(lua);
1200 HLUA_CLR_WAKERESWR(lua);
1201 HLUA_CLR_WAKEREQWR(lua);
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001202
Christopher Fauletbc275a92020-02-26 14:55:16 +01001203 /* Update the start time and reset wake_time. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001204 lua->start_time = now_ms;
Christopher Fauletbc275a92020-02-26 14:55:16 +01001205 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001206
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001207 /* Call the function. */
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001208#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
1209 ret = lua_resume(lua->T, gL.T, lua->nargs, &nres);
1210#else
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001211 ret = lua_resume(lua->T, gL.T, lua->nargs);
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001212#endif
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001213 switch (ret) {
1214
1215 case LUA_OK:
1216 ret = HLUA_E_OK;
1217 break;
1218
1219 case LUA_YIELD:
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001220 /* Check if the execution timeout is expired. It it is the case, we
1221 * break the Lua execution.
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001222 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001223 tv_update_date(0, 1);
1224 lua->run_time += now_ms - lua->start_time;
1225 if (lua->max_time && lua->run_time > lua->max_time) {
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001226 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001227 ret = HLUA_E_ETMOUT;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001228 break;
1229 }
1230 /* Process the forced yield. if the general yield is not allowed or
1231 * if no task were associated this the current Lua execution
1232 * coroutine, we resume the execution. Else we want to return in the
1233 * scheduler and we want to be waked up again, to continue the
1234 * current Lua execution. So we schedule our own task.
1235 */
1236 if (HLUA_IS_CTRLYIELDING(lua)) {
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001237 if (!yield_allowed || !lua->task)
1238 goto resume_execution;
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001239 task_wakeup(lua->task, TASK_WOKEN_MSG);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001240 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001241 if (!yield_allowed) {
1242 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001243 ret = HLUA_E_YIELD;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001244 break;
1245 }
1246 ret = HLUA_E_AGAIN;
1247 break;
1248
1249 case LUA_ERRRUN:
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001250
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001251 /* Special exit case. The traditional exit is returned as an error
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001252 * because the errors ares the only one mean to return immediately
1253 * from and lua execution.
1254 */
1255 if (lua->flags & HLUA_EXIT) {
1256 ret = HLUA_E_OK;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01001257 hlua_ctx_renew(lua, 1);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001258 break;
1259 }
1260
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001261 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001262 if (!lua_checkstack(lua->T, 1)) {
1263 ret = HLUA_E_ERR;
1264 break;
1265 }
1266 msg = lua_tostring(lua->T, -1);
1267 lua_settop(lua->T, 0); /* Empty the stack. */
1268 lua_pop(lua->T, 1);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001269 trace = hlua_traceback(lua->T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001270 if (msg)
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001271 lua_pushfstring(lua->T, "runtime error: %s from %s", msg, trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001272 else
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001273 lua_pushfstring(lua->T, "unknown runtime error from %s", trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001274 ret = HLUA_E_ERRMSG;
1275 break;
1276
1277 case LUA_ERRMEM:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001278 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001279 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001280 ret = HLUA_E_NOMEM;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001281 break;
1282
1283 case LUA_ERRERR:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001284 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001285 if (!lua_checkstack(lua->T, 1)) {
1286 ret = HLUA_E_ERR;
1287 break;
1288 }
1289 msg = lua_tostring(lua->T, -1);
1290 lua_settop(lua->T, 0); /* Empty the stack. */
1291 lua_pop(lua->T, 1);
1292 if (msg)
1293 lua_pushfstring(lua->T, "message handler error: %s", msg);
1294 else
1295 lua_pushfstring(lua->T, "message handler error");
1296 ret = HLUA_E_ERRMSG;
1297 break;
1298
1299 default:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001300 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001301 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001302 ret = HLUA_E_ERR;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001303 break;
1304 }
1305
1306 switch (ret) {
1307 case HLUA_E_AGAIN:
1308 break;
1309
1310 case HLUA_E_ERRMSG:
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001311 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001312 hlua_ctx_renew(lua, 1);
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001313 HLUA_CLR_RUN(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001314 break;
1315
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001316 case HLUA_E_ETMOUT:
1317 case HLUA_E_NOMEM:
1318 case HLUA_E_YIELD:
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001319 case HLUA_E_ERR:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001320 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001321 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001322 hlua_ctx_renew(lua, 0);
1323 break;
1324
1325 case HLUA_E_OK:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001326 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001327 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001328 break;
1329 }
1330
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001331 /* This is the main exit point, remove the Lua lock. */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001332 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001333
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001334 return ret;
1335}
1336
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001337/* This function exit the current code. */
1338__LJMP static int hlua_done(lua_State *L)
1339{
1340 struct hlua *hlua = hlua_gethlua(L);
1341
1342 hlua->flags |= HLUA_EXIT;
1343 WILL_LJMP(lua_error(L));
1344
1345 return 0;
1346}
1347
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001348/* This function is an LUA binding. It provides a function
1349 * for deleting ACL from a referenced ACL file.
1350 */
1351__LJMP static int hlua_del_acl(lua_State *L)
1352{
1353 const char *name;
1354 const char *key;
1355 struct pat_ref *ref;
1356
1357 MAY_LJMP(check_args(L, 2, "del_acl"));
1358
1359 name = MAY_LJMP(luaL_checkstring(L, 1));
1360 key = MAY_LJMP(luaL_checkstring(L, 2));
1361
1362 ref = pat_ref_lookup(name);
1363 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001364 WILL_LJMP(luaL_error(L, "'del_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001365
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001366 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001367 pat_ref_delete(ref, key);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001368 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001369 return 0;
1370}
1371
1372/* This function is an LUA binding. It provides a function
1373 * for deleting map entry from a referenced map file.
1374 */
1375static int hlua_del_map(lua_State *L)
1376{
1377 const char *name;
1378 const char *key;
1379 struct pat_ref *ref;
1380
1381 MAY_LJMP(check_args(L, 2, "del_map"));
1382
1383 name = MAY_LJMP(luaL_checkstring(L, 1));
1384 key = MAY_LJMP(luaL_checkstring(L, 2));
1385
1386 ref = pat_ref_lookup(name);
1387 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001388 WILL_LJMP(luaL_error(L, "'del_map': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001389
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001390 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001391 pat_ref_delete(ref, key);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001392 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001393 return 0;
1394}
1395
1396/* This function is an LUA binding. It provides a function
1397 * for adding ACL pattern from a referenced ACL file.
1398 */
1399static int hlua_add_acl(lua_State *L)
1400{
1401 const char *name;
1402 const char *key;
1403 struct pat_ref *ref;
1404
1405 MAY_LJMP(check_args(L, 2, "add_acl"));
1406
1407 name = MAY_LJMP(luaL_checkstring(L, 1));
1408 key = MAY_LJMP(luaL_checkstring(L, 2));
1409
1410 ref = pat_ref_lookup(name);
1411 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001412 WILL_LJMP(luaL_error(L, "'add_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001413
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001414 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001415 if (pat_ref_find_elt(ref, key) == NULL)
1416 pat_ref_add(ref, key, NULL, NULL);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001417 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001418 return 0;
1419}
1420
1421/* This function is an LUA binding. It provides a function
1422 * for setting map pattern and sample from a referenced map
1423 * file.
1424 */
1425static int hlua_set_map(lua_State *L)
1426{
1427 const char *name;
1428 const char *key;
1429 const char *value;
1430 struct pat_ref *ref;
1431
1432 MAY_LJMP(check_args(L, 3, "set_map"));
1433
1434 name = MAY_LJMP(luaL_checkstring(L, 1));
1435 key = MAY_LJMP(luaL_checkstring(L, 2));
1436 value = MAY_LJMP(luaL_checkstring(L, 3));
1437
1438 ref = pat_ref_lookup(name);
1439 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001440 WILL_LJMP(luaL_error(L, "'set_map': unknown map file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001441
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001442 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001443 if (pat_ref_find_elt(ref, key) != NULL)
1444 pat_ref_set(ref, key, value, NULL);
1445 else
1446 pat_ref_add(ref, key, value, NULL);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001447 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001448 return 0;
1449}
1450
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001451/* A class is a lot of memory that contain data. This data can be a table,
1452 * an integer or user data. This data is associated with a metatable. This
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001453 * metatable have an original version registered in the global context with
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001454 * the name of the object (_G[<name>] = <metable> ).
1455 *
1456 * A metable is a table that modify the standard behavior of a standard
1457 * access to the associated data. The entries of this new metatable are
1458 * defined as is:
1459 *
1460 * http://lua-users.org/wiki/MetatableEvents
1461 *
1462 * __index
1463 *
1464 * we access an absent field in a table, the result is nil. This is
1465 * true, but it is not the whole truth. Actually, such access triggers
1466 * the interpreter to look for an __index metamethod: If there is no
1467 * such method, as usually happens, then the access results in nil;
1468 * otherwise, the metamethod will provide the result.
1469 *
1470 * Control 'prototype' inheritance. When accessing "myTable[key]" and
1471 * the key does not appear in the table, but the metatable has an __index
1472 * property:
1473 *
1474 * - if the value is a function, the function is called, passing in the
1475 * table and the key; the return value of that function is returned as
1476 * the result.
1477 *
1478 * - if the value is another table, the value of the key in that table is
1479 * asked for and returned (and if it doesn't exist in that table, but that
1480 * table's metatable has an __index property, then it continues on up)
1481 *
1482 * - Use "rawget(myTable,key)" to skip this metamethod.
1483 *
1484 * http://www.lua.org/pil/13.4.1.html
1485 *
1486 * __newindex
1487 *
1488 * Like __index, but control property assignment.
1489 *
1490 * __mode - Control weak references. A string value with one or both
1491 * of the characters 'k' and 'v' which specifies that the the
1492 * keys and/or values in the table are weak references.
1493 *
1494 * __call - Treat a table like a function. When a table is followed by
1495 * parenthesis such as "myTable( 'foo' )" and the metatable has
1496 * a __call key pointing to a function, that function is invoked
1497 * (passing any specified arguments) and the return value is
1498 * returned.
1499 *
1500 * __metatable - Hide the metatable. When "getmetatable( myTable )" is
1501 * called, if the metatable for myTable has a __metatable
1502 * key, the value of that key is returned instead of the
1503 * actual metatable.
1504 *
1505 * __tostring - Control string representation. When the builtin
1506 * "tostring( myTable )" function is called, if the metatable
1507 * for myTable has a __tostring property set to a function,
1508 * that function is invoked (passing myTable to it) and the
1509 * return value is used as the string representation.
1510 *
1511 * __len - Control table length. When the table length is requested using
1512 * the length operator ( '#' ), if the metatable for myTable has
1513 * a __len key pointing to a function, that function is invoked
1514 * (passing myTable to it) and the return value used as the value
1515 * of "#myTable".
1516 *
1517 * __gc - Userdata finalizer code. When userdata is set to be garbage
1518 * collected, if the metatable has a __gc field pointing to a
1519 * function, that function is first invoked, passing the userdata
1520 * to it. The __gc metamethod is not called for tables.
1521 * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html)
1522 *
1523 * Special metamethods for redefining standard operators:
1524 * http://www.lua.org/pil/13.1.html
1525 *
1526 * __add "+"
1527 * __sub "-"
1528 * __mul "*"
1529 * __div "/"
1530 * __unm "!"
1531 * __pow "^"
1532 * __concat ".."
1533 *
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001534 * Special methods for redefining standard relations
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001535 * http://www.lua.org/pil/13.2.html
1536 *
1537 * __eq "=="
1538 * __lt "<"
1539 * __le "<="
1540 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001541
1542/*
1543 *
1544 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001545 * Class Map
1546 *
1547 *
1548 */
1549
1550/* Returns a struct hlua_map if the stack entry "ud" is
1551 * a class session, otherwise it throws an error.
1552 */
1553__LJMP static struct map_descriptor *hlua_checkmap(lua_State *L, int ud)
1554{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001555 return MAY_LJMP(hlua_checkudata(L, ud, class_map_ref));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001556}
1557
1558/* This function is the map constructor. It don't need
1559 * the class Map object. It creates and return a new Map
1560 * object. It must be called only during "body" or "init"
1561 * context because it process some filesystem accesses.
1562 */
1563__LJMP static int hlua_map_new(struct lua_State *L)
1564{
1565 const char *fn;
1566 int match = PAT_MATCH_STR;
1567 struct sample_conv conv;
1568 const char *file = "";
1569 int line = 0;
1570 lua_Debug ar;
1571 char *err = NULL;
1572 struct arg args[2];
1573
1574 if (lua_gettop(L) < 1 || lua_gettop(L) > 2)
1575 WILL_LJMP(luaL_error(L, "'new' needs at least 1 argument."));
1576
1577 fn = MAY_LJMP(luaL_checkstring(L, 1));
1578
1579 if (lua_gettop(L) >= 2) {
1580 match = MAY_LJMP(luaL_checkinteger(L, 2));
1581 if (match < 0 || match >= PAT_MATCH_NUM)
1582 WILL_LJMP(luaL_error(L, "'new' needs a valid match method."));
1583 }
1584
1585 /* Get Lua filename and line number. */
1586 if (lua_getstack(L, 1, &ar)) { /* check function at level */
1587 lua_getinfo(L, "Sl", &ar); /* get info about it */
1588 if (ar.currentline > 0) { /* is there info? */
1589 file = ar.short_src;
1590 line = ar.currentline;
1591 }
1592 }
1593
1594 /* fill fake sample_conv struct. */
1595 conv.kw = ""; /* unused. */
1596 conv.process = NULL; /* unused. */
1597 conv.arg_mask = 0; /* unused. */
1598 conv.val_args = NULL; /* unused. */
1599 conv.out_type = SMP_T_STR;
1600 conv.private = (void *)(long)match;
1601 switch (match) {
1602 case PAT_MATCH_STR: conv.in_type = SMP_T_STR; break;
1603 case PAT_MATCH_BEG: conv.in_type = SMP_T_STR; break;
1604 case PAT_MATCH_SUB: conv.in_type = SMP_T_STR; break;
1605 case PAT_MATCH_DIR: conv.in_type = SMP_T_STR; break;
1606 case PAT_MATCH_DOM: conv.in_type = SMP_T_STR; break;
1607 case PAT_MATCH_END: conv.in_type = SMP_T_STR; break;
1608 case PAT_MATCH_REG: conv.in_type = SMP_T_STR; break;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001609 case PAT_MATCH_INT: conv.in_type = SMP_T_SINT; break;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001610 case PAT_MATCH_IP: conv.in_type = SMP_T_ADDR; break;
1611 default:
1612 WILL_LJMP(luaL_error(L, "'new' doesn't support this match mode."));
1613 }
1614
1615 /* fill fake args. */
1616 args[0].type = ARGT_STR;
Christopher Faulet73292e92020-08-06 08:40:09 +02001617 args[0].data.str.area = strdup(fn);
1618 args[0].data.str.data = strlen(fn);
1619 args[0].data.str.size = args[0].data.str.data+1;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001620 args[1].type = ARGT_STOP;
1621
1622 /* load the map. */
1623 if (!sample_load_map(args, &conv, file, line, &err)) {
1624 /* error case: we cant use luaL_error because we must
1625 * free the err variable.
1626 */
1627 luaL_where(L, 1);
1628 lua_pushfstring(L, "'new': %s.", err);
1629 lua_concat(L, 2);
1630 free(err);
Christopher Faulet6ad7df42020-08-07 11:45:18 +02001631 chunk_destroy(&args[0].data.str);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001632 WILL_LJMP(lua_error(L));
1633 }
1634
1635 /* create the lua object. */
1636 lua_newtable(L);
1637 lua_pushlightuserdata(L, args[0].data.map);
1638 lua_rawseti(L, -2, 0);
1639
1640 /* Pop a class Map metatable and affect it to the userdata. */
1641 lua_rawgeti(L, LUA_REGISTRYINDEX, class_map_ref);
1642 lua_setmetatable(L, -2);
1643
1644
1645 return 1;
1646}
1647
1648__LJMP static inline int _hlua_map_lookup(struct lua_State *L, int str)
1649{
1650 struct map_descriptor *desc;
1651 struct pattern *pat;
1652 struct sample smp;
1653
1654 MAY_LJMP(check_args(L, 2, "lookup"));
1655 desc = MAY_LJMP(hlua_checkmap(L, 1));
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001656 if (desc->pat.expect_type == SMP_T_SINT) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001657 smp.data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001658 smp.data.u.sint = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001659 }
1660 else {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001661 smp.data.type = SMP_T_STR;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001662 smp.flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001663 smp.data.u.str.area = (char *)MAY_LJMP(luaL_checklstring(L, 2, (size_t *)&smp.data.u.str.data));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001664 }
1665
1666 pat = pattern_exec_match(&desc->pat, &smp, 1);
Thierry FOURNIER503bb092015-08-19 08:35:43 +02001667 if (!pat || !pat->data) {
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001668 if (str)
1669 lua_pushstring(L, "");
1670 else
1671 lua_pushnil(L);
1672 return 1;
1673 }
1674
1675 /* The Lua pattern must return a string, so we can't check the returned type */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001676 lua_pushlstring(L, pat->data->u.str.area, pat->data->u.str.data);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001677 return 1;
1678}
1679
1680__LJMP static int hlua_map_lookup(struct lua_State *L)
1681{
1682 return _hlua_map_lookup(L, 0);
1683}
1684
1685__LJMP static int hlua_map_slookup(struct lua_State *L)
1686{
1687 return _hlua_map_lookup(L, 1);
1688}
1689
1690/*
1691 *
1692 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001693 * Class Socket
1694 *
1695 *
1696 */
1697
1698__LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud)
1699{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001700 return MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001701}
1702
1703/* This function is the handler called for each I/O on the established
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001704 * connection. It is used for notify space available to send or data
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001705 * received.
1706 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001707static void hlua_socket_handler(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001708{
Willy Tarreau00a37f02015-04-13 12:05:19 +02001709 struct stream_interface *si = appctx->owner;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001710
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001711 if (appctx->ctx.hlua_cosocket.die) {
1712 si_shutw(si);
1713 si_shutr(si);
1714 si_ic(si)->flags |= CF_READ_NULL;
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001715 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1716 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001717 stream_shutdown(si_strm(si), SF_ERR_KILLED);
1718 }
1719
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001720 /* If we cant write, wakeup the pending write signals. */
1721 if (channel_output_closed(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001722 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001723
1724 /* If we cant read, wakeup the pending read signals. */
1725 if (channel_input_closed(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001726 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001727
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02001728 /* if the connection is not established, inform the stream that we want
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001729 * to be notified whenever the connection completes.
1730 */
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02001731 if (si_opposite(si)->state < SI_ST_EST) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001732 si_cant_get(si);
Willy Tarreau12c24232018-12-06 15:29:50 +01001733 si_rx_conn_blk(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01001734 si_rx_endp_more(si);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001735 return;
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001736 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001737
1738 /* This function is called after the connect. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001739 appctx->ctx.hlua_cosocket.connected = 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001740
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001741 /* Wake the tasks which wants to write if the buffer have available space. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001742 if (channel_may_recv(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001743 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001744
1745 /* Wake the tasks which wants to read if the buffer contains data. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001746 if (!channel_is_empty(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001747 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001748
1749 /* Some data were injected in the buffer, notify the stream
1750 * interface.
1751 */
1752 if (!channel_is_empty(si_ic(si)))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001753 si_update(si);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001754
1755 /* If write notifications are registered, we considers we want
Willy Tarreau3367d412018-11-15 10:57:41 +01001756 * to write, so we clear the blocking flag.
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001757 */
1758 if (notification_registered(&appctx->ctx.hlua_cosocket.wake_on_write))
Willy Tarreau3367d412018-11-15 10:57:41 +01001759 si_rx_endp_more(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001760}
1761
Willy Tarreau87b09662015-04-03 00:22:06 +02001762/* This function is called when the "struct stream" is destroyed.
1763 * Remove the link from the object to this stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001764 * Wake all the pending signals.
1765 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001766static void hlua_socket_release(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001767{
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001768 struct xref *peer;
1769
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001770 /* Remove my link in the original object. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001771 peer = xref_get_peer_and_lock(&appctx->ctx.hlua_cosocket.xref);
1772 if (peer)
1773 xref_disconnect(&appctx->ctx.hlua_cosocket.xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001774
1775 /* Wake all the task waiting for me. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001776 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1777 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001778}
1779
1780/* If the garbage collectio of the object is launch, nobody
Willy Tarreau87b09662015-04-03 00:22:06 +02001781 * uses this object. If the stream does not exists, just quit.
1782 * Send the shutdown signal to the stream. In some cases,
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001783 * pending signal can rest in the read and write lists. destroy
1784 * it.
1785 */
1786__LJMP static int hlua_socket_gc(lua_State *L)
1787{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001788 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001789 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001790 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001791
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001792 MAY_LJMP(check_args(L, 1, "__gc"));
1793
1794 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001795 peer = xref_get_peer_and_lock(&socket->xref);
1796 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001797 return 0;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001798 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001799
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001800 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001801 appctx->ctx.hlua_cosocket.die = 1;
1802 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001803
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001804 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001805 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001806 return 0;
1807}
1808
1809/* The close function send shutdown signal and break the
Willy Tarreau87b09662015-04-03 00:22:06 +02001810 * links between the stream and the object.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001811 */
sada05ed3302018-05-11 11:48:18 -07001812__LJMP static int hlua_socket_close_helper(lua_State *L)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001813{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001814 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001815 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001816 struct xref *peer;
Willy Tarreauf31af932020-01-14 09:59:38 +01001817 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001818
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001819 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001820
1821 /* Check if we run on the same thread than the xreator thread.
1822 * We cannot access to the socket if the thread is different.
1823 */
1824 if (socket->tid != tid)
1825 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1826
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001827 peer = xref_get_peer_and_lock(&socket->xref);
1828 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001829 return 0;
Willy Tarreauf31af932020-01-14 09:59:38 +01001830
1831 hlua->gc_count--;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001832 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001833
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001834 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001835 appctx->ctx.hlua_cosocket.die = 1;
1836 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001837
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001838 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001839 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001840 return 0;
1841}
1842
sada05ed3302018-05-11 11:48:18 -07001843/* The close function calls close_helper.
1844 */
1845__LJMP static int hlua_socket_close(lua_State *L)
1846{
1847 MAY_LJMP(check_args(L, 1, "close"));
1848 return hlua_socket_close_helper(L);
1849}
1850
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001851/* This Lua function assumes that the stack contain three parameters.
1852 * 1 - USERDATA containing a struct socket
1853 * 2 - INTEGER with values of the macro defined below
1854 * If the integer is -1, we must read at most one line.
1855 * If the integer is -2, we ust read all the data until the
1856 * end of the stream.
1857 * If the integer is positive value, we must read a number of
1858 * bytes corresponding to this value.
1859 */
1860#define HLSR_READ_LINE (-1)
1861#define HLSR_READ_ALL (-2)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001862__LJMP static int hlua_socket_receive_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001863{
1864 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
1865 int wanted = lua_tointeger(L, 2);
1866 struct hlua *hlua = hlua_gethlua(L);
1867 struct appctx *appctx;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001868 size_t len;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001869 int nblk;
Willy Tarreau206ba832018-06-14 15:27:31 +02001870 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001871 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02001872 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001873 size_t len2;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001874 int skip_at_end = 0;
Willy Tarreau81389672015-03-10 12:03:52 +01001875 struct channel *oc;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001876 struct stream_interface *si;
1877 struct stream *s;
1878 struct xref *peer;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001879 int missing_bytes;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001880
1881 /* Check if this lua stack is schedulable. */
1882 if (!hlua || !hlua->task)
1883 WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in "
1884 "'frontend', 'backend' or 'task'"));
1885
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001886 /* Check if we run on the same thread than the xreator thread.
1887 * We cannot access to the socket if the thread is different.
1888 */
1889 if (socket->tid != tid)
1890 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1891
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001892 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001893 peer = xref_get_peer_and_lock(&socket->xref);
1894 if (!peer)
1895 goto no_peer;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001896 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
1897 si = appctx->owner;
1898 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001899
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001900 oc = &s->res;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001901 if (wanted == HLSR_READ_LINE) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001902 /* Read line. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001903 nblk = co_getline_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001904 if (nblk < 0) /* Connection close. */
1905 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001906 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001907 goto connection_empty;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001908
1909 /* remove final \r\n. */
1910 if (nblk == 1) {
1911 if (blk1[len1-1] == '\n') {
1912 len1--;
1913 skip_at_end++;
1914 if (blk1[len1-1] == '\r') {
1915 len1--;
1916 skip_at_end++;
1917 }
1918 }
1919 }
1920 else {
1921 if (blk2[len2-1] == '\n') {
1922 len2--;
1923 skip_at_end++;
1924 if (blk2[len2-1] == '\r') {
1925 len2--;
1926 skip_at_end++;
1927 }
1928 }
1929 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001930 }
1931
1932 else if (wanted == HLSR_READ_ALL) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001933 /* Read all the available data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001934 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001935 if (nblk < 0) /* Connection close. */
1936 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001937 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001938 goto connection_empty;
1939 }
1940
1941 else {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001942 /* Read a block of data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001943 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001944 if (nblk < 0) /* Connection close. */
1945 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001946 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001947 goto connection_empty;
1948
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001949 missing_bytes = wanted - socket->b.n;
1950 if (len1 > missing_bytes) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001951 nblk = 1;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001952 len1 = missing_bytes;
1953 } if (nblk == 2 && len1 + len2 > missing_bytes)
1954 len2 = missing_bytes - len1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001955 }
1956
1957 len = len1;
1958
1959 luaL_addlstring(&socket->b, blk1, len1);
1960 if (nblk == 2) {
1961 len += len2;
1962 luaL_addlstring(&socket->b, blk2, len2);
1963 }
1964
1965 /* Consume data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001966 co_skip(oc, len + skip_at_end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001967
1968 /* Don't wait anything. */
Thierry FOURNIER7e4ee472018-05-25 15:03:50 +02001969 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001970
1971 /* If the pattern reclaim to read all the data
1972 * in the connection, got out.
1973 */
1974 if (wanted == HLSR_READ_ALL)
1975 goto connection_empty;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001976 else if (wanted >= 0 && socket->b.n < wanted)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001977 goto connection_empty;
1978
1979 /* Return result. */
1980 luaL_pushresult(&socket->b);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001981 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001982 return 1;
1983
1984connection_closed:
1985
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001986 xref_unlock(&socket->xref, peer);
1987
1988no_peer:
1989
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001990 /* If the buffer containds data. */
1991 if (socket->b.n > 0) {
1992 luaL_pushresult(&socket->b);
1993 return 1;
1994 }
1995 lua_pushnil(L);
1996 lua_pushstring(L, "connection closed.");
1997 return 2;
1998
1999connection_empty:
2000
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002001 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_read, hlua->task)) {
2002 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002003 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002004 }
2005 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002006 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_receive_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002007 return 0;
2008}
2009
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002010/* This Lua function gets two parameters. The first one can be string
2011 * or a number. If the string is "*l", the user requires one line. If
2012 * the string is "*a", the user requires all the contents of the stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002013 * If the value is a number, the user require a number of bytes equal
2014 * to the value. The default value is "*l" (a line).
2015 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002016 * This parameter with a variable type is converted in integer. This
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002017 * integer takes this values:
2018 * -1 : read a line
2019 * -2 : read all the stream
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002020 * >0 : amount of bytes.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002021 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002022 * The second parameter is optional. It contains a string that must be
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002023 * concatenated with the read data.
2024 */
2025__LJMP static int hlua_socket_receive(struct lua_State *L)
2026{
2027 int wanted = HLSR_READ_LINE;
2028 const char *pattern;
2029 int type;
2030 char *error;
2031 size_t len;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002032 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002033
2034 if (lua_gettop(L) < 1 || lua_gettop(L) > 3)
2035 WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments."));
2036
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002037 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002038
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002039 /* Check if we run on the same thread than the xreator thread.
2040 * We cannot access to the socket if the thread is different.
2041 */
2042 if (socket->tid != tid)
2043 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2044
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002045 /* check for pattern. */
2046 if (lua_gettop(L) >= 2) {
2047 type = lua_type(L, 2);
2048 if (type == LUA_TSTRING) {
2049 pattern = lua_tostring(L, 2);
2050 if (strcmp(pattern, "*a") == 0)
2051 wanted = HLSR_READ_ALL;
2052 else if (strcmp(pattern, "*l") == 0)
2053 wanted = HLSR_READ_LINE;
2054 else {
2055 wanted = strtoll(pattern, &error, 10);
2056 if (*error != '\0')
2057 WILL_LJMP(luaL_error(L, "Unsupported pattern."));
2058 }
2059 }
2060 else if (type == LUA_TNUMBER) {
2061 wanted = lua_tointeger(L, 2);
2062 if (wanted < 0)
2063 WILL_LJMP(luaL_error(L, "Unsupported size."));
2064 }
2065 }
2066
2067 /* Set pattern. */
2068 lua_pushinteger(L, wanted);
Tim Duesterhusc6e377e2018-01-04 19:32:13 +01002069
2070 /* Check if we would replace the top by itself. */
2071 if (lua_gettop(L) != 2)
2072 lua_replace(L, 2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002073
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002074 /* init buffer, and fill it with prefix. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002075 luaL_buffinit(L, &socket->b);
2076
2077 /* Check prefix. */
2078 if (lua_gettop(L) >= 3) {
2079 if (lua_type(L, 3) != LUA_TSTRING)
2080 WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix"));
2081 pattern = lua_tolstring(L, 3, &len);
2082 luaL_addlstring(&socket->b, pattern, len);
2083 }
2084
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002085 return __LJMP(hlua_socket_receive_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002086}
2087
2088/* Write the Lua input string in the output buffer.
Mark Lakes22154b42018-01-29 14:38:40 -08002089 * This function returns a yield if no space is available.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002090 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002091static int hlua_socket_write_yield(struct lua_State *L,int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002092{
2093 struct hlua_socket *socket;
2094 struct hlua *hlua = hlua_gethlua(L);
2095 struct appctx *appctx;
2096 size_t buf_len;
2097 const char *buf;
2098 int len;
2099 int send_len;
2100 int sent;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002101 struct xref *peer;
2102 struct stream_interface *si;
2103 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002104
2105 /* Check if this lua stack is schedulable. */
2106 if (!hlua || !hlua->task)
2107 WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in "
2108 "'frontend', 'backend' or 'task'"));
2109
2110 /* Get object */
2111 socket = MAY_LJMP(hlua_checksocket(L, 1));
2112 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002113 sent = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002114
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002115 /* Check if we run on the same thread than the xreator thread.
2116 * We cannot access to the socket if the thread is different.
2117 */
2118 if (socket->tid != tid)
2119 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2120
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002121 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002122 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002123 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002124 lua_pushinteger(L, -1);
2125 return 1;
2126 }
2127 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2128 si = appctx->owner;
2129 s = si_strm(si);
2130
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002131 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002132 if (channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002133 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002134 lua_pushinteger(L, -1);
2135 return 1;
2136 }
2137
2138 /* Update the input buffer data. */
2139 buf += sent;
2140 send_len = buf_len - sent;
2141
2142 /* All the data are sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002143 if (sent >= buf_len) {
2144 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002145 return 1; /* Implicitly return the length sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002146 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002147
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002148 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002149 * the request buffer if its not required.
2150 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002151 if (s->req.buf.size == 0) {
Willy Tarreau581abd32018-10-25 10:21:41 +02002152 if (!si_alloc_ibuf(si, &appctx->buffer_wait))
Christopher Faulet33834b12016-12-19 09:29:06 +01002153 goto hlua_socket_write_yield_return;
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002154 }
2155
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002156 /* Check for available space. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002157 len = b_room(&s->req.buf);
Christopher Faulet33834b12016-12-19 09:29:06 +01002158 if (len <= 0) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002159 goto hlua_socket_write_yield_return;
Christopher Faulet33834b12016-12-19 09:29:06 +01002160 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002161
2162 /* send data */
2163 if (len < send_len)
2164 send_len = len;
Thierry FOURNIER66b89192018-05-27 01:14:47 +02002165 len = ci_putblk(&s->req, buf, send_len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002166
2167 /* "Not enough space" (-1), "Buffer too little to contain
2168 * the data" (-2) are not expected because the available length
2169 * is tested.
2170 * Other unknown error are also not expected.
2171 */
2172 if (len <= 0) {
Willy Tarreaubc18da12015-03-13 14:00:47 +01002173 if (len == -1)
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002174 s->req.flags |= CF_WAKE_WRITE;
Willy Tarreaubc18da12015-03-13 14:00:47 +01002175
sada05ed3302018-05-11 11:48:18 -07002176 MAY_LJMP(hlua_socket_close_helper(L));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002177 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002178 lua_pushinteger(L, -1);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002179 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002180 return 1;
2181 }
2182
2183 /* update buffers. */
Thierry FOURNIER101b9762018-05-27 01:27:40 +02002184 appctx_wakeup(appctx);
Willy Tarreaude70fa12015-09-26 11:25:05 +02002185
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002186 s->req.rex = TICK_ETERNITY;
2187 s->res.wex = TICK_ETERNITY;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002188
2189 /* Update length sent. */
2190 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002191 lua_pushinteger(L, sent + len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002192
2193 /* All the data buffer is sent ? */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002194 if (sent + len >= buf_len) {
2195 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002196 return 1;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002197 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002198
2199hlua_socket_write_yield_return:
Thierry FOURNIERba42fcd2018-05-27 00:59:48 +02002200 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2201 xref_unlock(&socket->xref, peer);
2202 WILL_LJMP(luaL_error(L, "out of memory"));
2203 }
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002204 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002205 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_write_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002206 return 0;
2207}
2208
2209/* This function initiate the send of data. It just check the input
2210 * parameters and push an integer in the Lua stack that contain the
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002211 * amount of data written to the buffer. This is used by the function
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002212 * "hlua_socket_write_yield" that can yield.
2213 *
2214 * The Lua function gets between 3 and 4 parameters. The first one is
2215 * the associated object. The second is a string buffer. The third is
2216 * a facultative integer that represents where is the buffer position
2217 * of the start of the data that can send. The first byte is the
2218 * position "1". The default value is "1". The fourth argument is a
2219 * facultative integer that represents where is the buffer position
2220 * of the end of the data that can send. The default is the last byte.
2221 */
2222static int hlua_socket_send(struct lua_State *L)
2223{
2224 int i;
2225 int j;
2226 const char *buf;
2227 size_t buf_len;
2228
2229 /* Check number of arguments. */
2230 if (lua_gettop(L) < 2 || lua_gettop(L) > 4)
2231 WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments"));
2232
2233 /* Get the string. */
2234 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
2235
2236 /* Get and check j. */
2237 if (lua_gettop(L) == 4) {
2238 j = MAY_LJMP(luaL_checkinteger(L, 4));
2239 if (j < 0)
2240 j = buf_len + j + 1;
2241 if (j > buf_len)
2242 j = buf_len + 1;
2243 lua_pop(L, 1);
2244 }
2245 else
2246 j = buf_len;
2247
2248 /* Get and check i. */
2249 if (lua_gettop(L) == 3) {
2250 i = MAY_LJMP(luaL_checkinteger(L, 3));
2251 if (i < 0)
2252 i = buf_len + i + 1;
2253 if (i > buf_len)
2254 i = buf_len + 1;
2255 lua_pop(L, 1);
2256 } else
2257 i = 1;
2258
2259 /* Check bth i and j. */
2260 if (i > j) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002261 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002262 return 1;
2263 }
2264 if (i == 0 && j == 0) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002265 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002266 return 1;
2267 }
2268 if (i == 0)
2269 i = 1;
2270 if (j == 0)
2271 j = 1;
2272
2273 /* Pop the string. */
2274 lua_pop(L, 1);
2275
2276 /* Update the buffer length. */
2277 buf += i - 1;
2278 buf_len = j - i + 1;
2279 lua_pushlstring(L, buf, buf_len);
2280
2281 /* This unsigned is used to remember the amount of sent data. */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002282 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002283
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002284 return MAY_LJMP(hlua_socket_write_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002285}
2286
Willy Tarreau22b0a682015-06-17 19:43:49 +02002287#define SOCKET_INFO_MAX_LEN sizeof("[0000:0000:0000:0000:0000:0000:0000:0000]:12345")
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002288__LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr)
2289{
2290 static char buffer[SOCKET_INFO_MAX_LEN];
2291 int ret;
2292 int len;
2293 char *p;
2294
2295 ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1);
2296 if (ret <= 0) {
2297 lua_pushnil(L);
2298 return 1;
2299 }
2300
2301 if (ret == AF_UNIX) {
2302 lua_pushstring(L, buffer+1);
2303 return 1;
2304 }
2305 else if (ret == AF_INET6) {
2306 buffer[0] = '[';
2307 len = strlen(buffer);
2308 buffer[len] = ']';
2309 len++;
2310 buffer[len] = ':';
2311 len++;
2312 p = buffer;
2313 }
2314 else if (ret == AF_INET) {
2315 p = buffer + 1;
2316 len = strlen(p);
2317 p[len] = ':';
2318 len++;
2319 }
2320 else {
2321 lua_pushnil(L);
2322 return 1;
2323 }
2324
2325 if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) {
2326 lua_pushnil(L);
2327 return 1;
2328 }
2329
2330 lua_pushstring(L, p);
2331 return 1;
2332}
2333
2334/* Returns information about the peer of the connection. */
2335__LJMP static int hlua_socket_getpeername(struct lua_State *L)
2336{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002337 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002338 struct xref *peer;
2339 struct appctx *appctx;
2340 struct stream_interface *si;
2341 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002342 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002343
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002344 MAY_LJMP(check_args(L, 1, "getpeername"));
2345
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002346 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002347
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002348 /* Check if we run on the same thread than the xreator thread.
2349 * We cannot access to the socket if the thread is different.
2350 */
2351 if (socket->tid != tid)
2352 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2353
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002354 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002355 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002356 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002357 lua_pushnil(L);
2358 return 1;
2359 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002360 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2361 si = appctx->owner;
2362 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002363
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002364 if (!s->target_addr) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002365 xref_unlock(&socket->xref, peer);
Willy Tarreaua71f6422016-11-16 17:00:14 +01002366 lua_pushnil(L);
2367 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002368 }
2369
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002370 ret = MAY_LJMP(hlua_socket_info(L, s->target_addr));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002371 xref_unlock(&socket->xref, peer);
2372 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002373}
2374
2375/* Returns information about my connection side. */
2376static int hlua_socket_getsockname(struct lua_State *L)
2377{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002378 struct hlua_socket *socket;
2379 struct connection *conn;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002380 struct appctx *appctx;
2381 struct xref *peer;
2382 struct stream_interface *si;
2383 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002384 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002385
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002386 MAY_LJMP(check_args(L, 1, "getsockname"));
2387
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002388 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002389
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002390 /* Check if we run on the same thread than the xreator thread.
2391 * We cannot access to the socket if the thread is different.
2392 */
2393 if (socket->tid != tid)
2394 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2395
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002396 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002397 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002398 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002399 lua_pushnil(L);
2400 return 1;
2401 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002402 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2403 si = appctx->owner;
2404 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002405
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002406 conn = cs_conn(objt_cs(s->si[1].end));
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002407 if (!conn || !conn_get_src(conn)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002408 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002409 lua_pushnil(L);
2410 return 1;
2411 }
2412
Willy Tarreau9da9a6f2019-07-17 14:49:44 +02002413 ret = hlua_socket_info(L, conn->src);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002414 xref_unlock(&socket->xref, peer);
2415 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002416}
2417
2418/* This struct define the applet. */
Willy Tarreau30576452015-04-13 13:50:30 +02002419static struct applet update_applet = {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002420 .obj_type = OBJ_TYPE_APPLET,
2421 .name = "<LUA_TCP>",
2422 .fct = hlua_socket_handler,
2423 .release = hlua_socket_release,
2424};
2425
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002426__LJMP static int hlua_socket_connect_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002427{
2428 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
2429 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002430 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002431 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002432 struct stream_interface *si;
2433 struct stream *s;
2434
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002435 /* Check if we run on the same thread than the xreator thread.
2436 * We cannot access to the socket if the thread is different.
2437 */
2438 if (socket->tid != tid)
2439 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2440
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002441 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002442 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002443 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002444 lua_pushnil(L);
2445 lua_pushstring(L, "Can't connect");
2446 return 2;
2447 }
2448 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2449 si = appctx->owner;
2450 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002451
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002452 /* Check if we run on the same thread than the xreator thread.
2453 * We cannot access to the socket if the thread is different.
2454 */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002455 if (socket->tid != tid) {
2456 xref_unlock(&socket->xref, peer);
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002457 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002458 }
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002459
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002460 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002461 if (!hlua || channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002462 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002463 lua_pushnil(L);
2464 lua_pushstring(L, "Can't connect");
2465 return 2;
2466 }
2467
Willy Tarreaue09101e2018-10-16 17:37:12 +02002468 appctx = __objt_appctx(s->si[0].end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002469
2470 /* Check for connection established. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002471 if (appctx->ctx.hlua_cosocket.connected) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002472 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002473 lua_pushinteger(L, 1);
2474 return 1;
2475 }
2476
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002477 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2478 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002479 WILL_LJMP(luaL_error(L, "out of memory error"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002480 }
2481 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002482 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002483 return 0;
2484}
2485
2486/* This function fail or initite the connection. */
2487__LJMP static int hlua_socket_connect(struct lua_State *L)
2488{
2489 struct hlua_socket *socket;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002490 int port = -1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002491 const char *ip;
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002492 struct hlua *hlua;
2493 struct appctx *appctx;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002494 int low, high;
2495 struct sockaddr_storage *addr;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002496 struct xref *peer;
2497 struct stream_interface *si;
2498 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002499
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002500 if (lua_gettop(L) < 2)
2501 WILL_LJMP(luaL_error(L, "connect: need at least 2 arguments"));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002502
2503 /* Get args. */
2504 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002505
2506 /* Check if we run on the same thread than the xreator thread.
2507 * We cannot access to the socket if the thread is different.
2508 */
2509 if (socket->tid != tid)
2510 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2511
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002512 ip = MAY_LJMP(luaL_checkstring(L, 2));
Tim Duesterhus6edab862018-01-06 19:04:45 +01002513 if (lua_gettop(L) >= 3) {
2514 luaL_Buffer b;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002515 port = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002516
Tim Duesterhus6edab862018-01-06 19:04:45 +01002517 /* Force the ip to end with a colon, to support IPv6 addresses
2518 * that are not enclosed within square brackets.
2519 */
2520 if (port > 0) {
2521 luaL_buffinit(L, &b);
2522 luaL_addstring(&b, ip);
2523 luaL_addchar(&b, ':');
2524 luaL_pushresult(&b);
2525 ip = lua_tolstring(L, lua_gettop(L), NULL);
2526 }
2527 }
2528
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002529 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002530 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002531 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002532 lua_pushnil(L);
2533 return 1;
2534 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002535
2536 /* Parse ip address. */
Willy Tarreau32819932020-09-04 15:53:16 +02002537 addr = str2sa_range(ip, NULL, &low, &high, NULL, NULL, NULL, PA_O_PORT_OK | PA_O_STREAM);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002538 if (!addr) {
2539 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002540 WILL_LJMP(luaL_error(L, "connect: cannot parse destination address '%s'", ip));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002541 }
Willy Tarreau9da9a6f2019-07-17 14:49:44 +02002542
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002543 /* Set port. */
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002544 if (low == 0) {
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002545 if (addr->ss_family == AF_INET) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002546 if (port == -1) {
2547 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002548 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002549 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002550 ((struct sockaddr_in *)addr)->sin_port = htons(port);
2551 } else if (addr->ss_family == AF_INET6) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002552 if (port == -1) {
2553 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002554 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002555 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002556 ((struct sockaddr_in6 *)addr)->sin6_port = htons(port);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002557 }
2558 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002559
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002560 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2561 si = appctx->owner;
2562 s = si_strm(si);
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002563
2564 if (!sockaddr_alloc(&s->target_addr)) {
2565 xref_unlock(&socket->xref, peer);
2566 WILL_LJMP(luaL_error(L, "connect: internal error"));
2567 }
2568 *s->target_addr = *addr;
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002569 s->flags |= SF_ADDR_SET;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002570
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002571 hlua = hlua_gethlua(L);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002572
2573 /* inform the stream that we want to be notified whenever the
2574 * connection completes.
2575 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01002576 si_cant_get(&s->si[0]);
Willy Tarreau3367d412018-11-15 10:57:41 +01002577 si_rx_endp_more(&s->si[0]);
Thierry FOURNIER8c8fbbe2015-09-26 17:02:35 +02002578 appctx_wakeup(appctx);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002579
Willy Tarreauf31af932020-01-14 09:59:38 +01002580 hlua->gc_count++;
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02002581
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002582 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2583 xref_unlock(&socket->xref, peer);
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002584 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002585 }
2586 xref_unlock(&socket->xref, peer);
PiBa-NL706d5ee2018-05-05 23:51:42 +02002587
2588 task_wakeup(s->task, TASK_WOKEN_INIT);
2589 /* Return yield waiting for connection. */
2590
Willy Tarreau9635e032018-10-16 17:52:55 +02002591 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002592
2593 return 0;
2594}
2595
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002596#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002597__LJMP static int hlua_socket_connect_ssl(struct lua_State *L)
2598{
2599 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002600 struct xref *peer;
2601 struct appctx *appctx;
2602 struct stream_interface *si;
2603 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002604
2605 MAY_LJMP(check_args(L, 3, "connect_ssl"));
2606 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002607
2608 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002609 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002610 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002611 lua_pushnil(L);
2612 return 1;
2613 }
2614 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2615 si = appctx->owner;
2616 s = si_strm(si);
2617
2618 s->target = &socket_ssl.obj_type;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002619 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002620 return MAY_LJMP(hlua_socket_connect(L));
2621}
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002622#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002623
2624__LJMP static int hlua_socket_setoption(struct lua_State *L)
2625{
2626 return 0;
2627}
2628
2629__LJMP static int hlua_socket_settimeout(struct lua_State *L)
2630{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002631 struct hlua_socket *socket;
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002632 int tmout;
Mark Lakes56cc1252018-03-27 09:48:06 +02002633 double dtmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002634 struct xref *peer;
2635 struct appctx *appctx;
2636 struct stream_interface *si;
2637 struct stream *s;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002638
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002639 MAY_LJMP(check_args(L, 2, "settimeout"));
2640
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002641 socket = MAY_LJMP(hlua_checksocket(L, 1));
Mark Lakes56cc1252018-03-27 09:48:06 +02002642
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002643 /* convert the timeout to millis */
2644 dtmout = MAY_LJMP(luaL_checknumber(L, 2)) * 1000;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002645
Thierry Fournier17a921b2018-03-08 09:59:02 +01002646 /* Check for negative values */
Mark Lakes56cc1252018-03-27 09:48:06 +02002647 if (dtmout < 0)
Thierry Fournier17a921b2018-03-08 09:59:02 +01002648 WILL_LJMP(luaL_error(L, "settimeout: cannot set negatives values"));
2649
Mark Lakes56cc1252018-03-27 09:48:06 +02002650 if (dtmout > INT_MAX) /* overflow check */
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002651 WILL_LJMP(luaL_error(L, "settimeout: cannot set values larger than %d ms", INT_MAX));
Mark Lakes56cc1252018-03-27 09:48:06 +02002652
2653 tmout = MS_TO_TICKS((int)dtmout);
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002654 if (tmout == 0)
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05002655 tmout++; /* very small timeouts are adjusted to a minimum of 1ms */
Mark Lakes56cc1252018-03-27 09:48:06 +02002656
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002657 /* Check if we run on the same thread than the xreator thread.
2658 * We cannot access to the socket if the thread is different.
2659 */
2660 if (socket->tid != tid)
2661 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2662
Mark Lakes56cc1252018-03-27 09:48:06 +02002663 /* check for connection break. If some data were read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002664 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002665 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002666 hlua_pusherror(L, "socket: not yet initialised, you can't set timeouts.");
2667 WILL_LJMP(lua_error(L));
2668 return 0;
2669 }
2670 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2671 si = appctx->owner;
2672 s = si_strm(si);
2673
Cyril Bonté7bb63452018-08-17 23:51:02 +02002674 s->sess->fe->timeout.connect = tmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002675 s->req.rto = tmout;
2676 s->req.wto = tmout;
2677 s->res.rto = tmout;
2678 s->res.wto = tmout;
Cyril Bonté7bb63452018-08-17 23:51:02 +02002679 s->req.rex = tick_add_ifset(now_ms, tmout);
2680 s->req.wex = tick_add_ifset(now_ms, tmout);
2681 s->res.rex = tick_add_ifset(now_ms, tmout);
2682 s->res.wex = tick_add_ifset(now_ms, tmout);
2683
2684 s->task->expire = tick_add_ifset(now_ms, tmout);
2685 task_queue(s->task);
2686
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002687 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002688
Thierry Fourniere9636f12018-03-08 09:54:32 +01002689 lua_pushinteger(L, 1);
Tim Duesterhus119a5f12018-01-06 19:16:25 +01002690 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002691}
2692
2693__LJMP static int hlua_socket_new(lua_State *L)
2694{
2695 struct hlua_socket *socket;
2696 struct appctx *appctx;
Willy Tarreau15b5e142015-04-04 14:38:25 +02002697 struct session *sess;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002698 struct stream *strm;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002699
2700 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002701 if (!lua_checkstack(L, 3)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002702 hlua_pusherror(L, "socket: full stack");
2703 goto out_fail_conf;
2704 }
2705
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002706 /* Create the object: obj[0] = userdata. */
2707 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002708 socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket)));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002709 lua_rawseti(L, -2, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002710 memset(socket, 0, sizeof(*socket));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002711 socket->tid = tid;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002712
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05002713 /* Check if the various memory pools are initialized. */
Willy Tarreaubafbe012017-11-24 17:34:44 +01002714 if (!pool_head_stream || !pool_head_buffer) {
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002715 hlua_pusherror(L, "socket: uninitialized pools.");
2716 goto out_fail_conf;
2717 }
2718
Willy Tarreau87b09662015-04-03 00:22:06 +02002719 /* Pop a class stream metatable and affect it to the userdata. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002720 lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref);
2721 lua_setmetatable(L, -2);
2722
Willy Tarreaud420a972015-04-06 00:39:18 +02002723 /* Create the applet context */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01002724 appctx = appctx_new(&update_applet, tid_bit);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002725 if (!appctx) {
2726 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaufeb76402015-04-03 14:10:06 +02002727 goto out_fail_conf;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002728 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002729
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002730 appctx->ctx.hlua_cosocket.connected = 0;
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02002731 appctx->ctx.hlua_cosocket.die = 0;
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002732 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_write);
2733 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_read);
Willy Tarreaub2bf8332015-04-04 15:58:58 +02002734
Willy Tarreaud420a972015-04-06 00:39:18 +02002735 /* Now create a session, task and stream for this applet */
2736 sess = session_new(&socket_proxy, NULL, &appctx->obj_type);
2737 if (!sess) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002738 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002739 goto out_fail_sess;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002740 }
2741
Willy Tarreau87787ac2017-08-28 16:22:54 +02002742 strm = stream_new(sess, &appctx->obj_type);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002743 if (!strm) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002744 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002745 goto out_fail_stream;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002746 }
2747
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002748 /* Initialise cross reference between stream and Lua socket object. */
2749 xref_create(&socket->xref, &appctx->ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002750
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002751 /* Configure "right" stream interface. this "si" is used to connect
2752 * and retrieve data from the server. The connection is initialized
2753 * with the "struct server".
2754 */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002755 si_set_state(&strm->si[1], SI_ST_ASS);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002756
2757 /* Force destination server. */
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002758 strm->flags |= SF_DIRECT | SF_ASSIGNED | SF_BE_ASSIGNED;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002759 strm->target = &socket_tcp.obj_type;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002760
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002761 return 1;
2762
Willy Tarreaud420a972015-04-06 00:39:18 +02002763 out_fail_stream:
Willy Tarreau11c36242015-04-04 15:54:03 +02002764 session_free(sess);
Willy Tarreaud420a972015-04-06 00:39:18 +02002765 out_fail_sess:
2766 appctx_free(appctx);
2767 out_fail_conf:
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002768 WILL_LJMP(lua_error(L));
2769 return 0;
2770}
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01002771
2772/*
2773 *
2774 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002775 * Class Channel
2776 *
2777 *
2778 */
2779
2780/* Returns the struct hlua_channel join to the class channel in the
2781 * stack entry "ud" or throws an argument error.
2782 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002783__LJMP static struct channel *hlua_checkchannel(lua_State *L, int ud)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002784{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002785 return MAY_LJMP(hlua_checkudata(L, ud, class_channel_ref));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002786}
2787
Willy Tarreau47860ed2015-03-10 14:07:50 +01002788/* Pushes the channel onto the top of the stack. If the stask does not have a
2789 * free slots, the function fails and returns 0;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002790 */
Willy Tarreau2a71af42015-03-10 13:51:50 +01002791static int hlua_channel_new(lua_State *L, struct channel *channel)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002792{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002793 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002794 if (!lua_checkstack(L, 3))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002795 return 0;
2796
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002797 lua_newtable(L);
Willy Tarreau47860ed2015-03-10 14:07:50 +01002798 lua_pushlightuserdata(L, channel);
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002799 lua_rawseti(L, -2, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002800
2801 /* Pop a class sesison metatable and affect it to the userdata. */
2802 lua_rawgeti(L, LUA_REGISTRYINDEX, class_channel_ref);
2803 lua_setmetatable(L, -2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002804 return 1;
2805}
2806
2807/* Duplicate all the data present in the input channel and put it
2808 * in a string LUA variables. Returns -1 and push a nil value in
2809 * the stack if the channel is closed and all the data are consumed,
2810 * returns 0 if no data are available, otherwise it returns the length
Ilya Shipitsind4259502020-04-08 01:07:56 +05002811 * of the built string.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002812 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002813static inline int _hlua_channel_dup(struct channel *chn, lua_State *L)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002814{
2815 char *blk1;
2816 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002817 size_t len1;
2818 size_t len2;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002819 int ret;
2820 luaL_Buffer b;
2821
Willy Tarreau06d80a92017-10-19 14:32:15 +02002822 ret = ci_getblk_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002823 if (unlikely(ret == 0))
2824 return 0;
2825
2826 if (unlikely(ret < 0)) {
2827 lua_pushnil(L);
2828 return -1;
2829 }
2830
2831 luaL_buffinit(L, &b);
2832 luaL_addlstring(&b, blk1, len1);
2833 if (unlikely(ret == 2))
2834 luaL_addlstring(&b, blk2, len2);
2835 luaL_pushresult(&b);
2836
2837 if (unlikely(ret == 2))
2838 return len1 + len2;
2839 return len1;
2840}
2841
2842/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2843 * a yield. This function keep the data in the buffer.
2844 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002845__LJMP static int hlua_channel_dup_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002846{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002847 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002848
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002849 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2850
Thierry Fournier77016da2020-08-15 14:35:51 +02002851 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2852 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002853 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002854 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002855
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002856 if (_hlua_channel_dup(chn, L) == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002857 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_dup_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002858 return 1;
2859}
2860
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002861/* Check arguments for the function "hlua_channel_dup_yield". */
2862__LJMP static int hlua_channel_dup(lua_State *L)
2863{
2864 MAY_LJMP(check_args(L, 1, "dup"));
2865 MAY_LJMP(hlua_checkchannel(L, 1));
2866 return MAY_LJMP(hlua_channel_dup_yield(L, 0, 0));
2867}
2868
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002869/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2870 * a yield. This function consumes the data in the buffer. It returns
2871 * a string containing the data or a nil pointer if no data are available
2872 * and the channel is closed.
2873 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002874__LJMP static int hlua_channel_get_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002875{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002876 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002877 int ret;
2878
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002879 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002880
Thierry Fournier77016da2020-08-15 14:35:51 +02002881 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2882 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002883 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002884 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002885
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002886 ret = _hlua_channel_dup(chn, L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002887 if (unlikely(ret == 0))
Willy Tarreau9635e032018-10-16 17:52:55 +02002888 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_get_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002889
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002890 if (unlikely(ret == -1))
2891 return 1;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002892
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002893 b_sub(&chn->buf, ret);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002894 return 1;
2895}
2896
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002897/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002898__LJMP static int hlua_channel_get(lua_State *L)
2899{
2900 MAY_LJMP(check_args(L, 1, "get"));
2901 MAY_LJMP(hlua_checkchannel(L, 1));
2902 return MAY_LJMP(hlua_channel_get_yield(L, 0, 0));
2903}
2904
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002905/* This functions consumes and returns one line. If the channel is closed,
2906 * and the last data does not contains a final '\n', the data are returned
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002907 * without the final '\n'. When no more data are available, it returns nil
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002908 * value.
2909 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002910__LJMP static int hlua_channel_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002911{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002912 char *blk1;
2913 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002914 size_t len1;
2915 size_t len2;
2916 size_t len;
Willy Tarreau47860ed2015-03-10 14:07:50 +01002917 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002918 int ret;
2919 luaL_Buffer b;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002920
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002921 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2922
Thierry Fournier77016da2020-08-15 14:35:51 +02002923 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2924 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002925 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002926 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002927
Willy Tarreau06d80a92017-10-19 14:32:15 +02002928 ret = ci_getline_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002929 if (ret == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002930 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_getline_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002931
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002932 if (ret == -1) {
2933 lua_pushnil(L);
2934 return 1;
2935 }
2936
2937 luaL_buffinit(L, &b);
2938 luaL_addlstring(&b, blk1, len1);
2939 len = len1;
2940 if (unlikely(ret == 2)) {
2941 luaL_addlstring(&b, blk2, len2);
2942 len += len2;
2943 }
2944 luaL_pushresult(&b);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002945 b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn) + len, NULL, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002946 return 1;
2947}
2948
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002949/* Check arguments for the function "hlua_channel_getline_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002950__LJMP static int hlua_channel_getline(lua_State *L)
2951{
2952 MAY_LJMP(check_args(L, 1, "getline"));
2953 MAY_LJMP(hlua_checkchannel(L, 1));
2954 return MAY_LJMP(hlua_channel_getline_yield(L, 0, 0));
2955}
2956
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002957/* This function takes a string as input, and append it at the
2958 * input side of channel. If the data is too big, but a space
2959 * is probably available after sending some data, the function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002960 * yields. If the data is bigger than the buffer, or if the
2961 * channel is closed, it returns -1. Otherwise, it returns the
2962 * amount of data written.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002963 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002964__LJMP static int hlua_channel_append_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002965{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002966 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002967 size_t len;
2968 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
2969 int l = MAY_LJMP(luaL_checkinteger(L, 3));
2970 int ret;
2971 int max;
2972
Thierry Fournier77016da2020-08-15 14:35:51 +02002973 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2974 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002975 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002976 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002977
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002978 /* Check if the buffer is available because HAProxy doesn't allocate
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002979 * the request buffer if its not required.
2980 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002981 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01002982 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02002983 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002984 }
2985
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002986 max = channel_recv_limit(chn) - b_data(&chn->buf);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002987 if (max > len - l)
2988 max = len - l;
2989
Willy Tarreau06d80a92017-10-19 14:32:15 +02002990 ret = ci_putblk(chn, str + l, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002991 if (ret == -2 || ret == -3) {
2992 lua_pushinteger(L, -1);
2993 return 1;
2994 }
Willy Tarreaubc18da12015-03-13 14:00:47 +01002995 if (ret == -1) {
2996 chn->flags |= CF_WAKE_WRITE;
Willy Tarreau9635e032018-10-16 17:52:55 +02002997 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Willy Tarreaubc18da12015-03-13 14:00:47 +01002998 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002999 l += ret;
3000 lua_pop(L, 1);
3001 lua_pushinteger(L, l);
3002
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003003 max = channel_recv_limit(chn) - b_data(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003004 if (max == 0 && co_data(chn) == 0) {
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003005 /* There are no space available, and the output buffer is empty.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003006 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003007 * we return the amount of copied data.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003008 */
3009 return 1;
3010 }
3011 if (l < len)
Willy Tarreau9635e032018-10-16 17:52:55 +02003012 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003013 return 1;
3014}
3015
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003016/* Just a wrapper of "hlua_channel_append_yield". It returns the length
3017 * of the written string, or -1 if the channel is closed or if the
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003018 * buffer size is too little for the data.
3019 */
3020__LJMP static int hlua_channel_append(lua_State *L)
3021{
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003022 size_t len;
3023
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003024 MAY_LJMP(check_args(L, 2, "append"));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003025 MAY_LJMP(hlua_checkchannel(L, 1));
3026 MAY_LJMP(luaL_checklstring(L, 2, &len));
3027 MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003028 lua_pushinteger(L, 0);
3029
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003030 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003031}
3032
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003033/* Just a wrapper of "hlua_channel_append_yield". This wrapper starts
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003034 * his process by cleaning the buffer. The result is a replacement
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003035 * of the current data. It returns the length of the written string,
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003036 * or -1 if the channel is closed or if the buffer size is too
3037 * little for the data.
3038 */
3039__LJMP static int hlua_channel_set(lua_State *L)
3040{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003041 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003042
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003043 MAY_LJMP(check_args(L, 2, "set"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003044 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003045 lua_pushinteger(L, 0);
3046
Thierry Fournier77016da2020-08-15 14:35:51 +02003047 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3048 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003049 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003050 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003051
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003052 b_set_data(&chn->buf, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003053
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003054 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003055}
3056
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003057/* Append data in the output side of the buffer. This data is immediately
3058 * sent. The function returns the amount of data written. If the buffer
3059 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003060 * if the channel is closed.
3061 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003062__LJMP static int hlua_channel_send_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003063{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003064 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003065 size_t len;
3066 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3067 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3068 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003069 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003070
Thierry Fournier77016da2020-08-15 14:35:51 +02003071 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3072 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003073 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003074 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003075
Willy Tarreau47860ed2015-03-10 14:07:50 +01003076 if (unlikely(channel_output_closed(chn))) {
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003077 lua_pushinteger(L, -1);
3078 return 1;
3079 }
3080
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003081 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003082 * the request buffer if its not required.
3083 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003084 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01003085 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02003086 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003087 }
3088
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003089 /* The written data will be immediately sent, so we can check
3090 * the available space without taking in account the reserve.
3091 * The reserve is guaranteed for the processing of incoming
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003092 * data, because the buffer will be flushed.
3093 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003094 max = b_room(&chn->buf);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003095
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003096 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003097 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003098 * we return the amount of copied data.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003099 */
Willy Tarreaua79021a2018-06-15 18:07:57 +02003100 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003101 return 1;
3102
3103 /* Adjust the real required length. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003104 if (max > len - l)
3105 max = len - l;
3106
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003107 /* The buffer available size may be not contiguous. This test
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003108 * detects a non contiguous buffer and realign it.
3109 */
Willy Tarreau3f679992018-06-15 15:06:42 +02003110 if (ci_space_for_replace(chn) < max)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003111 channel_slow_realign(chn, trash.area);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003112
3113 /* Copy input data in the buffer. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003114 max = b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn), str + l, max);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003115
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003116 /* buffer replace considers that the input part is filled.
3117 * so, I must forward these new data in the output part.
3118 */
Willy Tarreaubcbd3932018-06-06 07:13:22 +02003119 c_adv(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003120
3121 l += max;
3122 lua_pop(L, 1);
3123 lua_pushinteger(L, l);
3124
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003125 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003126 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003127 * we return the amount of copied data.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003128 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003129 max = b_room(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003130 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003131 return 1;
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003132
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003133 if (l < len) {
3134 /* If we are waiting for space in the response buffer, we
3135 * must set the flag WAKERESWR. This flag required the task
3136 * wake up if any activity is detected on the response buffer.
3137 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003138 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003139 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003140 else
3141 HLUA_SET_WAKEREQWR(hlua);
Willy Tarreau9635e032018-10-16 17:52:55 +02003142 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003143 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003144
3145 return 1;
3146}
3147
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003148/* Just a wrapper of "_hlua_channel_send". This wrapper permits
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003149 * yield the LUA process, and resume it without checking the
3150 * input arguments.
3151 */
3152__LJMP static int hlua_channel_send(lua_State *L)
3153{
3154 MAY_LJMP(check_args(L, 2, "send"));
3155 lua_pushinteger(L, 0);
3156
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003157 return MAY_LJMP(hlua_channel_send_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003158}
3159
3160/* This function forward and amount of butes. The data pass from
3161 * the input side of the buffer to the output side, and can be
3162 * forwarded. This function never fails.
3163 *
3164 * The Lua function takes an amount of bytes to be forwarded in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003165 * input. It returns the number of bytes forwarded.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003166 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003167__LJMP static int hlua_channel_forward_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003168{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003169 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003170 int len;
3171 int l;
3172 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003173 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003174
3175 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet3f829a42018-12-13 21:56:45 +01003176
Thierry Fournier77016da2020-08-15 14:35:51 +02003177 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3178 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003179 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003180 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003181
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003182 len = MAY_LJMP(luaL_checkinteger(L, 2));
3183 l = MAY_LJMP(luaL_checkinteger(L, -1));
3184
3185 max = len - l;
Willy Tarreaua79021a2018-06-15 18:07:57 +02003186 if (max > ci_data(chn))
3187 max = ci_data(chn);
Willy Tarreau47860ed2015-03-10 14:07:50 +01003188 channel_forward(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003189 l += max;
3190
3191 lua_pop(L, 1);
3192 lua_pushinteger(L, l);
3193
3194 /* Check if it miss bytes to forward. */
3195 if (l < len) {
3196 /* The the input channel or the output channel are closed, we
3197 * must return the amount of data forwarded.
3198 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003199 if (channel_input_closed(chn) || channel_output_closed(chn))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003200 return 1;
3201
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003202 /* If we are waiting for space data in the response buffer, we
3203 * must set the flag WAKERESWR. This flag required the task
3204 * wake up if any activity is detected on the response buffer.
3205 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003206 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003207 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003208 else
3209 HLUA_SET_WAKEREQWR(hlua);
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003210
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003211 /* Otherwise, we can yield waiting for new data in the inpout side. */
Willy Tarreau9635e032018-10-16 17:52:55 +02003212 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_forward_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003213 }
3214
3215 return 1;
3216}
3217
3218/* Just check the input and prepare the stack for the previous
3219 * function "hlua_channel_forward_yield"
3220 */
3221__LJMP static int hlua_channel_forward(lua_State *L)
3222{
3223 MAY_LJMP(check_args(L, 2, "forward"));
3224 MAY_LJMP(hlua_checkchannel(L, 1));
3225 MAY_LJMP(luaL_checkinteger(L, 2));
3226
3227 lua_pushinteger(L, 0);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003228 return MAY_LJMP(hlua_channel_forward_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003229}
3230
3231/* Just returns the number of bytes available in the input
3232 * side of the buffer. This function never fails.
3233 */
3234__LJMP static int hlua_channel_get_in_len(lua_State *L)
3235{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003236 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003237
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003238 MAY_LJMP(check_args(L, 1, "get_in_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003239 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Fauleta3ceac12018-12-14 13:39:09 +01003240 if (IS_HTX_STRM(chn_strm(chn))) {
3241 struct htx *htx = htxbuf(&chn->buf);
3242 lua_pushinteger(L, htx->data - co_data(chn));
3243 }
3244 else
3245 lua_pushinteger(L, ci_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003246 return 1;
3247}
3248
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003249/* Returns true if the channel is full. */
3250__LJMP static int hlua_channel_is_full(lua_State *L)
3251{
3252 struct channel *chn;
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003253
3254 MAY_LJMP(check_args(L, 1, "is_full"));
3255 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet0ec740e2020-02-26 11:59:19 +01003256 /* ignore the reserve, we are not on a producer side (ie in an
3257 * applet).
3258 */
3259 lua_pushboolean(L, channel_full(chn, 0));
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003260 return 1;
3261}
3262
Christopher Faulet2ac9ba22020-02-25 10:15:50 +01003263/* Returns true if the channel is the response channel. */
3264__LJMP static int hlua_channel_is_resp(lua_State *L)
3265{
3266 struct channel *chn;
3267
3268 MAY_LJMP(check_args(L, 1, "is_resp"));
3269 chn = MAY_LJMP(hlua_checkchannel(L, 1));
3270
3271 lua_pushboolean(L, !!(chn->flags & CF_ISRESP));
3272 return 1;
3273}
3274
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003275/* Just returns the number of bytes available in the output
3276 * side of the buffer. This function never fails.
3277 */
3278__LJMP static int hlua_channel_get_out_len(lua_State *L)
3279{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003280 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003281
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003282 MAY_LJMP(check_args(L, 1, "get_out_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003283 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Willy Tarreaua79021a2018-06-15 18:07:57 +02003284 lua_pushinteger(L, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003285 return 1;
3286}
3287
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003288/*
3289 *
3290 *
3291 * Class Fetches
3292 *
3293 *
3294 */
3295
3296/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003297 * a class stream, otherwise it throws an error.
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003298 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003299__LJMP static struct hlua_smp *hlua_checkfetches(lua_State *L, int ud)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003300{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003301 return MAY_LJMP(hlua_checkudata(L, ud, class_fetches_ref));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003302}
3303
3304/* This function creates and push in the stack a fetch object according
3305 * with a current TXN.
3306 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003307static int hlua_fetches_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003308{
Willy Tarreau7073c472015-04-06 11:15:40 +02003309 struct hlua_smp *hsmp;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003310
3311 /* Check stack size. */
3312 if (!lua_checkstack(L, 3))
3313 return 0;
3314
3315 /* Create the object: obj[0] = userdata.
3316 * Note that the base of the Fetches object is the
3317 * transaction object.
3318 */
3319 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003320 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003321 lua_rawseti(L, -2, 0);
3322
Willy Tarreau7073c472015-04-06 11:15:40 +02003323 hsmp->s = txn->s;
3324 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003325 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003326 hsmp->flags = flags;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003327
3328 /* Pop a class sesison metatable and affect it to the userdata. */
3329 lua_rawgeti(L, LUA_REGISTRYINDEX, class_fetches_ref);
3330 lua_setmetatable(L, -2);
3331
3332 return 1;
3333}
3334
3335/* This function is an LUA binding. It is called with each sample-fetch.
3336 * It uses closure argument to store the associated sample-fetch. It
3337 * returns only one argument or throws an error. An error is thrown
3338 * only if an error is encountered during the argument parsing. If
3339 * the "sample-fetch" function fails, nil is returned.
3340 */
3341__LJMP static int hlua_run_sample_fetch(lua_State *L)
3342{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003343 struct hlua_smp *hsmp;
Willy Tarreau2ec22742015-03-10 14:27:20 +01003344 struct sample_fetch *f;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003345 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003346 int i;
3347 struct sample smp;
3348
3349 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003350 f = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003351
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003352 /* Get traditional arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003353 hsmp = MAY_LJMP(hlua_checkfetches(L, 1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003354
Thierry FOURNIERca988662015-12-20 18:43:03 +01003355 /* Check execution authorization. */
3356 if (f->use & SMP_USE_HTTP_ANY &&
3357 !(hsmp->flags & HLUA_F_MAY_USE_HTTP)) {
3358 lua_pushfstring(L, "the sample-fetch '%s' needs an HTTP parser which "
3359 "is not available in Lua services", f->kw);
3360 WILL_LJMP(lua_error(L));
3361 }
3362
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003363 /* Get extra arguments. */
3364 for (i = 0; i < lua_gettop(L) - 1; i++) {
3365 if (i >= ARGM_NBARGS)
3366 break;
3367 hlua_lua2arg(L, i + 2, &args[i]);
3368 }
3369 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003370 args[i].data.str.area = NULL;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003371
3372 /* Check arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003373 MAY_LJMP(hlua_lua2arg_check(L, 2, args, f->arg_mask, hsmp->p));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003374
3375 /* Run the special args checker. */
Willy Tarreau2ec22742015-03-10 14:27:20 +01003376 if (f->val_args && !f->val_args(args, NULL)) {
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003377 lua_pushfstring(L, "error in arguments");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003378 goto error;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003379 }
3380
3381 /* Initialise the sample. */
3382 memset(&smp, 0, sizeof(smp));
3383
3384 /* Run the sample fetch process. */
Willy Tarreau1777ea62016-03-10 16:15:46 +01003385 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
Thierry FOURNIER0786d052015-05-11 15:42:45 +02003386 if (!f->process(args, &smp, f->kw, f->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003387 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003388 lua_pushstring(L, "");
3389 else
3390 lua_pushnil(L);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003391 goto end;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003392 }
3393
3394 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003395 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003396 hlua_smp2lua_str(L, &smp);
3397 else
3398 hlua_smp2lua(L, &smp);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003399
3400 end:
3401 for (i = 0; args[i].type != ARGT_STOP; i++) {
3402 if (args[i].type == ARGT_STR)
3403 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003404 else if (args[i].type == ARGT_REG)
3405 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003406 }
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003407 return 1;
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003408
3409 error:
3410 for (i = 0; args[i].type != ARGT_STOP; i++) {
3411 if (args[i].type == ARGT_STR)
3412 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003413 else if (args[i].type == ARGT_REG)
3414 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003415 }
3416 WILL_LJMP(lua_error(L));
3417 return 0; /* Never reached */
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003418}
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003419
3420/*
3421 *
3422 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003423 * Class Converters
3424 *
3425 *
3426 */
3427
3428/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003429 * a class stream, otherwise it throws an error.
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003430 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003431__LJMP static struct hlua_smp *hlua_checkconverters(lua_State *L, int ud)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003432{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003433 return MAY_LJMP(hlua_checkudata(L, ud, class_converters_ref));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003434}
3435
3436/* This function creates and push in the stack a Converters object
3437 * according with a current TXN.
3438 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003439static int hlua_converters_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003440{
Willy Tarreau7073c472015-04-06 11:15:40 +02003441 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003442
3443 /* Check stack size. */
3444 if (!lua_checkstack(L, 3))
3445 return 0;
3446
3447 /* Create the object: obj[0] = userdata.
3448 * Note that the base of the Converters object is the
3449 * same than the TXN object.
3450 */
3451 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003452 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003453 lua_rawseti(L, -2, 0);
3454
Willy Tarreau7073c472015-04-06 11:15:40 +02003455 hsmp->s = txn->s;
3456 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003457 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003458 hsmp->flags = flags;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003459
Willy Tarreau87b09662015-04-03 00:22:06 +02003460 /* Pop a class stream metatable and affect it to the table. */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003461 lua_rawgeti(L, LUA_REGISTRYINDEX, class_converters_ref);
3462 lua_setmetatable(L, -2);
3463
3464 return 1;
3465}
3466
3467/* This function is an LUA binding. It is called with each converter.
3468 * It uses closure argument to store the associated converter. It
3469 * returns only one argument or throws an error. An error is thrown
3470 * only if an error is encountered during the argument parsing. If
3471 * the converter function function fails, nil is returned.
3472 */
3473__LJMP static int hlua_run_sample_conv(lua_State *L)
3474{
Willy Tarreauda5f1082015-04-06 11:17:13 +02003475 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003476 struct sample_conv *conv;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003477 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003478 int i;
3479 struct sample smp;
3480
3481 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003482 conv = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003483
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003484 /* Get traditional arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003485 hsmp = MAY_LJMP(hlua_checkconverters(L, 1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003486
3487 /* Get extra arguments. */
3488 for (i = 0; i < lua_gettop(L) - 2; i++) {
3489 if (i >= ARGM_NBARGS)
3490 break;
3491 hlua_lua2arg(L, i + 3, &args[i]);
3492 }
3493 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003494 args[i].data.str.area = NULL;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003495
3496 /* Check arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003497 MAY_LJMP(hlua_lua2arg_check(L, 3, args, conv->arg_mask, hsmp->p));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003498
3499 /* Run the special args checker. */
3500 if (conv->val_args && !conv->val_args(args, conv, "", 0, NULL)) {
3501 hlua_pusherror(L, "error in arguments");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003502 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003503 }
3504
3505 /* Initialise the sample. */
3506 if (!hlua_lua2smp(L, 2, &smp)) {
3507 hlua_pusherror(L, "error in the input argument");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003508 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003509 }
3510
Willy Tarreau1777ea62016-03-10 16:15:46 +01003511 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
3512
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003513 /* Apply expected cast. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003514 if (!sample_casts[smp.data.type][conv->in_type]) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003515 hlua_pusherror(L, "invalid input argument: cannot cast '%s' to '%s'",
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003516 smp_to_type[smp.data.type], smp_to_type[conv->in_type]);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003517 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003518 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003519 if (sample_casts[smp.data.type][conv->in_type] != c_none &&
3520 !sample_casts[smp.data.type][conv->in_type](&smp)) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003521 hlua_pusherror(L, "error during the input argument casting");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003522 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003523 }
3524
3525 /* Run the sample conversion process. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02003526 if (!conv->process(args, &smp, conv->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003527 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003528 lua_pushstring(L, "");
3529 else
Willy Tarreaua678b432015-08-28 10:14:59 +02003530 lua_pushnil(L);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003531 goto end;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003532 }
3533
3534 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003535 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003536 hlua_smp2lua_str(L, &smp);
3537 else
3538 hlua_smp2lua(L, &smp);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003539 end:
3540 for (i = 0; args[i].type != ARGT_STOP; i++) {
3541 if (args[i].type == ARGT_STR)
3542 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003543 else if (args[i].type == ARGT_REG)
3544 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003545 }
Willy Tarreaua678b432015-08-28 10:14:59 +02003546 return 1;
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003547
3548 error:
3549 for (i = 0; args[i].type != ARGT_STOP; i++) {
3550 if (args[i].type == ARGT_STR)
3551 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003552 else if (args[i].type == ARGT_REG)
3553 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003554 }
3555 WILL_LJMP(lua_error(L));
3556 return 0; /* Never reached */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003557}
3558
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003559/*
3560 *
3561 *
3562 * Class AppletTCP
3563 *
3564 *
3565 */
3566
3567/* Returns a struct hlua_txn if the stack entry "ud" is
3568 * a class stream, otherwise it throws an error.
3569 */
3570__LJMP static struct hlua_appctx *hlua_checkapplet_tcp(lua_State *L, int ud)
3571{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003572 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_tcp_ref));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003573}
3574
3575/* This function creates and push in the stack an Applet object
3576 * according with a current TXN.
3577 */
3578static int hlua_applet_tcp_new(lua_State *L, struct appctx *ctx)
3579{
3580 struct hlua_appctx *appctx;
3581 struct stream_interface *si = ctx->owner;
3582 struct stream *s = si_strm(si);
3583 struct proxy *p = s->be;
3584
3585 /* Check stack size. */
3586 if (!lua_checkstack(L, 3))
3587 return 0;
3588
3589 /* Create the object: obj[0] = userdata.
3590 * Note that the base of the Converters object is the
3591 * same than the TXN object.
3592 */
3593 lua_newtable(L);
3594 appctx = lua_newuserdata(L, sizeof(*appctx));
3595 lua_rawseti(L, -2, 0);
3596 appctx->appctx = ctx;
3597 appctx->htxn.s = s;
3598 appctx->htxn.p = p;
3599
3600 /* Create the "f" field that contains a list of fetches. */
3601 lua_pushstring(L, "f");
3602 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3603 return 0;
3604 lua_settable(L, -3);
3605
3606 /* Create the "sf" field that contains a list of stringsafe fetches. */
3607 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003608 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003609 return 0;
3610 lua_settable(L, -3);
3611
3612 /* Create the "c" field that contains a list of converters. */
3613 lua_pushstring(L, "c");
3614 if (!hlua_converters_new(L, &appctx->htxn, 0))
3615 return 0;
3616 lua_settable(L, -3);
3617
3618 /* Create the "sc" field that contains a list of stringsafe converters. */
3619 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003620 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003621 return 0;
3622 lua_settable(L, -3);
3623
3624 /* Pop a class stream metatable and affect it to the table. */
3625 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_tcp_ref);
3626 lua_setmetatable(L, -2);
3627
3628 return 1;
3629}
3630
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003631__LJMP static int hlua_applet_tcp_set_var(lua_State *L)
3632{
3633 struct hlua_appctx *appctx;
3634 struct stream *s;
3635 const char *name;
3636 size_t len;
3637 struct sample smp;
3638
Tim Duesterhus4e172c92020-05-19 13:49:42 +02003639 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
3640 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003641
3642 /* It is useles to retrieve the stream, but this function
3643 * runs only in a stream context.
3644 */
3645 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3646 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3647 s = appctx->htxn.s;
3648
3649 /* Converts the third argument in a sample. */
3650 hlua_lua2smp(L, 3, &smp);
3651
3652 /* Store the sample in a variable. */
3653 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02003654
3655 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
3656 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
3657 else
3658 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
3659
Tim Duesterhus84ebc132020-05-19 13:49:41 +02003660 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003661}
3662
3663__LJMP static int hlua_applet_tcp_unset_var(lua_State *L)
3664{
3665 struct hlua_appctx *appctx;
3666 struct stream *s;
3667 const char *name;
3668 size_t len;
3669 struct sample smp;
3670
3671 MAY_LJMP(check_args(L, 2, "unset_var"));
3672
3673 /* It is useles to retrieve the stream, but this function
3674 * runs only in a stream context.
3675 */
3676 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3677 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3678 s = appctx->htxn.s;
3679
3680 /* Unset the variable. */
3681 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02003682 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
3683 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003684}
3685
3686__LJMP static int hlua_applet_tcp_get_var(lua_State *L)
3687{
3688 struct hlua_appctx *appctx;
3689 struct stream *s;
3690 const char *name;
3691 size_t len;
3692 struct sample smp;
3693
3694 MAY_LJMP(check_args(L, 2, "get_var"));
3695
3696 /* It is useles to retrieve the stream, but this function
3697 * runs only in a stream context.
3698 */
3699 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3700 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3701 s = appctx->htxn.s;
3702
3703 smp_set_owner(&smp, s->be, s->sess, s, 0);
3704 if (!vars_get_by_name(name, len, &smp)) {
3705 lua_pushnil(L);
3706 return 1;
3707 }
3708
3709 return hlua_smp2lua(L, &smp);
3710}
3711
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003712__LJMP static int hlua_applet_tcp_set_priv(lua_State *L)
3713{
3714 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3715 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003716 struct hlua *hlua;
3717
3718 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003719 if (!s->hlua)
3720 return 0;
3721 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003722
3723 MAY_LJMP(check_args(L, 2, "set_priv"));
3724
3725 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02003726 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003727
3728 /* Get and store new value. */
3729 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
3730 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
3731
3732 return 0;
3733}
3734
3735__LJMP static int hlua_applet_tcp_get_priv(lua_State *L)
3736{
3737 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3738 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003739 struct hlua *hlua;
3740
3741 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003742 if (!s->hlua) {
3743 lua_pushnil(L);
3744 return 1;
3745 }
3746 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003747
3748 /* Push configuration index in the stack. */
3749 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
3750
3751 return 1;
3752}
3753
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003754/* If expected data not yet available, it returns a yield. This function
3755 * consumes the data in the buffer. It returns a string containing the
3756 * data. This string can be empty.
3757 */
3758__LJMP static int hlua_applet_tcp_getline_yield(lua_State *L, int status, lua_KContext ctx)
3759{
3760 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3761 struct stream_interface *si = appctx->appctx->owner;
3762 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003763 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003764 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003765 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003766 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003767
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003768 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003769 ret = co_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003770
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003771 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003772 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003773 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003774 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_getline_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003775 }
3776
3777 /* End of data: commit the total strings and return. */
3778 if (ret < 0) {
3779 luaL_pushresult(&appctx->b);
3780 return 1;
3781 }
3782
3783 /* Ensure that the block 2 length is usable. */
3784 if (ret == 1)
3785 len2 = 0;
3786
3787 /* dont check the max length read and dont check. */
3788 luaL_addlstring(&appctx->b, blk1, len1);
3789 luaL_addlstring(&appctx->b, blk2, len2);
3790
3791 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003792 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003793 luaL_pushresult(&appctx->b);
3794 return 1;
3795}
3796
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003797/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003798__LJMP static int hlua_applet_tcp_getline(lua_State *L)
3799{
3800 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3801
3802 /* Initialise the string catenation. */
3803 luaL_buffinit(L, &appctx->b);
3804
3805 return MAY_LJMP(hlua_applet_tcp_getline_yield(L, 0, 0));
3806}
3807
3808/* If expected data not yet available, it returns a yield. This function
3809 * consumes the data in the buffer. It returns a string containing the
3810 * data. This string can be empty.
3811 */
3812__LJMP static int hlua_applet_tcp_recv_yield(lua_State *L, int status, lua_KContext ctx)
3813{
3814 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3815 struct stream_interface *si = appctx->appctx->owner;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003816 size_t len = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003817 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003818 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003819 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003820 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003821 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003822
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003823 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003824 ret = co_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003825
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003826 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003827 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003828 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003829 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003830 }
3831
3832 /* End of data: commit the total strings and return. */
3833 if (ret < 0) {
3834 luaL_pushresult(&appctx->b);
3835 return 1;
3836 }
3837
3838 /* Ensure that the block 2 length is usable. */
3839 if (ret == 1)
3840 len2 = 0;
3841
3842 if (len == -1) {
3843
3844 /* If len == -1, catenate all the data avalaile and
3845 * yield because we want to get all the data until
3846 * the end of data stream.
3847 */
3848 luaL_addlstring(&appctx->b, blk1, len1);
3849 luaL_addlstring(&appctx->b, blk2, len2);
Willy Tarreau06d80a92017-10-19 14:32:15 +02003850 co_skip(si_oc(si), len1 + len2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003851 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003852 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003853
3854 } else {
3855
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003856 /* Copy the first block caping to the length required. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003857 if (len1 > len)
3858 len1 = len;
3859 luaL_addlstring(&appctx->b, blk1, len1);
3860 len -= len1;
3861
3862 /* Copy the second block. */
3863 if (len2 > len)
3864 len2 = len;
3865 luaL_addlstring(&appctx->b, blk2, len2);
3866 len -= len2;
3867
3868 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003869 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003870
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003871 /* If there is no other data available, yield waiting for new data. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003872 if (len > 0) {
3873 lua_pushinteger(L, len);
3874 lua_replace(L, 2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003875 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003876 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003877 }
3878
3879 /* return the result. */
3880 luaL_pushresult(&appctx->b);
3881 return 1;
3882 }
3883
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003884 /* we never execute this */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003885 hlua_pusherror(L, "Lua: internal error");
3886 WILL_LJMP(lua_error(L));
3887 return 0;
3888}
3889
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003890/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003891__LJMP static int hlua_applet_tcp_recv(lua_State *L)
3892{
3893 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3894 int len = -1;
3895
3896 if (lua_gettop(L) > 2)
3897 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
3898 if (lua_gettop(L) >= 2) {
3899 len = MAY_LJMP(luaL_checkinteger(L, 2));
3900 lua_pop(L, 1);
3901 }
3902
3903 /* Confirm or set the required length */
3904 lua_pushinteger(L, len);
3905
3906 /* Initialise the string catenation. */
3907 luaL_buffinit(L, &appctx->b);
3908
3909 return MAY_LJMP(hlua_applet_tcp_recv_yield(L, 0, 0));
3910}
3911
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003912/* Append data in the output side of the buffer. This data is immediately
3913 * sent. The function returns the amount of data written. If the buffer
3914 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003915 * if the channel is closed.
3916 */
3917__LJMP static int hlua_applet_tcp_send_yield(lua_State *L, int status, lua_KContext ctx)
3918{
3919 size_t len;
3920 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3921 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3922 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3923 struct stream_interface *si = appctx->appctx->owner;
3924 struct channel *chn = si_ic(si);
3925 int max;
3926
3927 /* Get the max amount of data which can write as input in the channel. */
3928 max = channel_recv_max(chn);
3929 if (max > (len - l))
3930 max = len - l;
3931
3932 /* Copy data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003933 ci_putblk(chn, str + l, max);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003934
3935 /* update counters. */
3936 l += max;
3937 lua_pop(L, 1);
3938 lua_pushinteger(L, l);
3939
3940 /* If some data is not send, declares the situation to the
3941 * applet, and returns a yield.
3942 */
3943 if (l < len) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003944 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003945 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003946 }
3947
3948 return 1;
3949}
3950
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003951/* Just a wrapper of "hlua_applet_tcp_send_yield". This wrapper permits
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003952 * yield the LUA process, and resume it without checking the
3953 * input arguments.
3954 */
3955__LJMP static int hlua_applet_tcp_send(lua_State *L)
3956{
3957 MAY_LJMP(check_args(L, 2, "send"));
3958 lua_pushinteger(L, 0);
3959
3960 return MAY_LJMP(hlua_applet_tcp_send_yield(L, 0, 0));
3961}
3962
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003963/*
3964 *
3965 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003966 * Class AppletHTTP
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003967 *
3968 *
3969 */
3970
3971/* Returns a struct hlua_txn if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003972 * a class stream, otherwise it throws an error.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003973 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003974__LJMP static struct hlua_appctx *hlua_checkapplet_http(lua_State *L, int ud)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003975{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003976 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_http_ref));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003977}
3978
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003979/* This function creates and push in the stack an Applet object
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003980 * according with a current TXN.
3981 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003982static int hlua_applet_http_new(lua_State *L, struct appctx *ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003983{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003984 struct hlua_appctx *appctx;
Thierry FOURNIER841475e2015-12-11 17:10:09 +01003985 struct hlua_txn htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003986 struct stream_interface *si = ctx->owner;
3987 struct stream *s = si_strm(si);
3988 struct proxy *px = s->be;
Christopher Fauleta2097962019-07-15 16:25:33 +02003989 struct htx *htx;
3990 struct htx_blk *blk;
3991 struct htx_sl *sl;
3992 struct ist path;
3993 unsigned long long len = 0;
3994 int32_t pos;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003995
3996 /* Check stack size. */
3997 if (!lua_checkstack(L, 3))
3998 return 0;
3999
4000 /* Create the object: obj[0] = userdata.
4001 * Note that the base of the Converters object is the
4002 * same than the TXN object.
4003 */
4004 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004005 appctx = lua_newuserdata(L, sizeof(*appctx));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004006 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004007 appctx->appctx = ctx;
4008 appctx->appctx->ctx.hlua_apphttp.status = 200; /* Default status code returned. */
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004009 appctx->appctx->ctx.hlua_apphttp.reason = NULL; /* Use default reason based on status */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004010 appctx->htxn.s = s;
4011 appctx->htxn.p = px;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004012
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004013 /* Create the "f" field that contains a list of fetches. */
4014 lua_pushstring(L, "f");
4015 if (!hlua_fetches_new(L, &appctx->htxn, 0))
4016 return 0;
4017 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004018
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004019 /* Create the "sf" field that contains a list of stringsafe fetches. */
4020 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004021 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004022 return 0;
4023 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004024
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004025 /* Create the "c" field that contains a list of converters. */
4026 lua_pushstring(L, "c");
4027 if (!hlua_converters_new(L, &appctx->htxn, 0))
4028 return 0;
4029 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004030
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004031 /* Create the "sc" field that contains a list of stringsafe converters. */
4032 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004033 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004034 return 0;
4035 lua_settable(L, -3);
Willy Tarreaueee5b512015-04-03 23:46:31 +02004036
Christopher Fauleta2097962019-07-15 16:25:33 +02004037 htx = htxbuf(&s->req.buf);
4038 blk = htx_get_first_blk(htx);
Christopher Fauletea009732019-11-18 15:50:25 +01004039 BUG_ON(!blk || htx_get_blk_type(blk) != HTX_BLK_REQ_SL);
Christopher Fauleta2097962019-07-15 16:25:33 +02004040 sl = htx_get_blk_ptr(htx, blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004041
Christopher Fauleta2097962019-07-15 16:25:33 +02004042 /* Stores the request method. */
4043 lua_pushstring(L, "method");
4044 lua_pushlstring(L, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl));
4045 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004046
Christopher Fauleta2097962019-07-15 16:25:33 +02004047 /* Stores the http version. */
4048 lua_pushstring(L, "version");
4049 lua_pushlstring(L, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl));
4050 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004051
Christopher Fauleta2097962019-07-15 16:25:33 +02004052 /* creates an array of headers. hlua_http_get_headers() crates and push
4053 * the array on the top of the stack.
4054 */
4055 lua_pushstring(L, "headers");
4056 htxn.s = s;
4057 htxn.p = px;
4058 htxn.dir = SMP_OPT_DIR_REQ;
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004059 if (!hlua_http_get_headers(L, &htxn.s->txn->req))
Christopher Fauleta2097962019-07-15 16:25:33 +02004060 return 0;
4061 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004062
Christopher Fauleta2097962019-07-15 16:25:33 +02004063 path = http_get_path(htx_sl_req_uri(sl));
Tim Duesterhused526372020-03-05 17:56:33 +01004064 if (isttest(path)) {
Christopher Fauleta2097962019-07-15 16:25:33 +02004065 char *p, *q, *end;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004066
Christopher Fauleta2097962019-07-15 16:25:33 +02004067 p = path.ptr;
4068 end = path.ptr + path.len;
4069 q = p;
4070 while (q < end && *q != '?')
4071 q++;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004072
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004073 /* Stores the request path. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004074 lua_pushstring(L, "path");
4075 lua_pushlstring(L, p, q - p);
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004076 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004077
Christopher Fauleta2097962019-07-15 16:25:33 +02004078 /* Stores the query string. */
4079 lua_pushstring(L, "qs");
4080 if (*q == '?')
4081 q++;
4082 lua_pushlstring(L, q, end - q);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004083 lua_settable(L, -3);
Christopher Fauleta2097962019-07-15 16:25:33 +02004084 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004085
Christopher Fauleta2097962019-07-15 16:25:33 +02004086 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4087 struct htx_blk *blk = htx_get_blk(htx, pos);
4088 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004089
Christopher Fauleta2097962019-07-15 16:25:33 +02004090 if (type == HTX_BLK_EOM || type == HTX_BLK_TLR || type == HTX_BLK_EOT)
4091 break;
4092 if (type == HTX_BLK_DATA)
4093 len += htx_get_blksz(blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004094 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004095 if (htx->extra != ULLONG_MAX)
4096 len += htx->extra;
4097
4098 /* Stores the request path. */
4099 lua_pushstring(L, "length");
4100 lua_pushinteger(L, len);
4101 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004102
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004103 /* Create an empty array of HTTP request headers. */
4104 lua_pushstring(L, "response");
4105 lua_newtable(L);
4106 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004107
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004108 /* Pop a class stream metatable and affect it to the table. */
4109 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_http_ref);
4110 lua_setmetatable(L, -2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004111
4112 return 1;
4113}
4114
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004115__LJMP static int hlua_applet_http_set_var(lua_State *L)
4116{
4117 struct hlua_appctx *appctx;
4118 struct stream *s;
4119 const char *name;
4120 size_t len;
4121 struct sample smp;
4122
Tim Duesterhus4e172c92020-05-19 13:49:42 +02004123 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
4124 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004125
4126 /* It is useles to retrieve the stream, but this function
4127 * runs only in a stream context.
4128 */
4129 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4130 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4131 s = appctx->htxn.s;
4132
4133 /* Converts the third argument in a sample. */
4134 hlua_lua2smp(L, 3, &smp);
4135
4136 /* Store the sample in a variable. */
4137 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02004138
4139 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
4140 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
4141 else
4142 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
4143
Tim Duesterhus84ebc132020-05-19 13:49:41 +02004144 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004145}
4146
4147__LJMP static int hlua_applet_http_unset_var(lua_State *L)
4148{
4149 struct hlua_appctx *appctx;
4150 struct stream *s;
4151 const char *name;
4152 size_t len;
4153 struct sample smp;
4154
4155 MAY_LJMP(check_args(L, 2, "unset_var"));
4156
4157 /* It is useles to retrieve the stream, but this function
4158 * runs only in a stream context.
4159 */
4160 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4161 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4162 s = appctx->htxn.s;
4163
4164 /* Unset the variable. */
4165 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02004166 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
4167 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004168}
4169
4170__LJMP static int hlua_applet_http_get_var(lua_State *L)
4171{
4172 struct hlua_appctx *appctx;
4173 struct stream *s;
4174 const char *name;
4175 size_t len;
4176 struct sample smp;
4177
4178 MAY_LJMP(check_args(L, 2, "get_var"));
4179
4180 /* It is useles to retrieve the stream, but this function
4181 * runs only in a stream context.
4182 */
4183 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4184 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4185 s = appctx->htxn.s;
4186
4187 smp_set_owner(&smp, s->be, s->sess, s, 0);
4188 if (!vars_get_by_name(name, len, &smp)) {
4189 lua_pushnil(L);
4190 return 1;
4191 }
4192
4193 return hlua_smp2lua(L, &smp);
4194}
4195
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004196__LJMP static int hlua_applet_http_set_priv(lua_State *L)
4197{
4198 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4199 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004200 struct hlua *hlua;
4201
4202 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004203 if (!s->hlua)
4204 return 0;
4205 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004206
4207 MAY_LJMP(check_args(L, 2, "set_priv"));
4208
4209 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02004210 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004211
4212 /* Get and store new value. */
4213 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
4214 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
4215
4216 return 0;
4217}
4218
4219__LJMP static int hlua_applet_http_get_priv(lua_State *L)
4220{
4221 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4222 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004223 struct hlua *hlua;
4224
4225 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004226 if (!s->hlua) {
4227 lua_pushnil(L);
4228 return 1;
4229 }
4230 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004231
4232 /* Push configuration index in the stack. */
4233 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
4234
4235 return 1;
4236}
4237
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004238/* If expected data not yet available, it returns a yield. This function
4239 * consumes the data in the buffer. It returns a string containing the
4240 * data. This string can be empty.
4241 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004242__LJMP static int hlua_applet_http_getline_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004243{
4244 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4245 struct stream_interface *si = appctx->appctx->owner;
4246 struct channel *req = si_oc(si);
4247 struct htx *htx;
4248 struct htx_blk *blk;
4249 size_t count;
4250 int stop = 0;
4251
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004252 htx = htx_from_buf(&req->buf);
4253 count = co_data(req);
Christopher Fauleta3f15502019-05-13 15:27:23 +02004254 blk = htx_get_first_blk(htx);
Christopher Fauletcc26b132018-12-18 21:20:57 +01004255
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004256 while (count && !stop && blk) {
4257 enum htx_blk_type type = htx_get_blk_type(blk);
4258 uint32_t sz = htx_get_blksz(blk);
4259 struct ist v;
4260 uint32_t vlen;
4261 char *nl;
4262
Christopher Faulete461e342018-12-18 16:43:35 +01004263 if (type == HTX_BLK_EOM) {
4264 stop = 1;
4265 break;
4266 }
4267
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004268 vlen = sz;
4269 if (vlen > count) {
4270 if (type != HTX_BLK_DATA)
4271 break;
4272 vlen = count;
4273 }
4274
4275 switch (type) {
4276 case HTX_BLK_UNUSED:
4277 break;
4278
4279 case HTX_BLK_DATA:
4280 v = htx_get_blk_value(htx, blk);
4281 v.len = vlen;
4282 nl = istchr(v, '\n');
4283 if (nl != NULL) {
4284 stop = 1;
4285 vlen = nl - v.ptr + 1;
4286 }
4287 luaL_addlstring(&appctx->b, v.ptr, vlen);
4288 break;
4289
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004290 case HTX_BLK_TLR:
4291 case HTX_BLK_EOM:
4292 stop = 1;
4293 break;
4294
4295 default:
4296 break;
4297 }
4298
4299 co_set_data(req, co_data(req) - vlen);
4300 count -= vlen;
4301 if (sz == vlen)
4302 blk = htx_remove_blk(htx, blk);
4303 else {
4304 htx_cut_data_blk(htx, blk, vlen);
4305 break;
4306 }
4307 }
4308
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004309 htx_to_buf(htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004310 if (!stop) {
4311 si_cant_get(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004312 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004313 }
4314
4315 /* return the result. */
4316 luaL_pushresult(&appctx->b);
4317 return 1;
4318}
4319
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004320
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004321/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004322__LJMP static int hlua_applet_http_getline(lua_State *L)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004323{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004324 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004325
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004326 /* Initialise the string catenation. */
4327 luaL_buffinit(L, &appctx->b);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004328
Christopher Fauleta2097962019-07-15 16:25:33 +02004329 return MAY_LJMP(hlua_applet_http_getline_yield(L, 0, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004330}
4331
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004332/* If expected data not yet available, it returns a yield. This function
4333 * consumes the data in the buffer. It returns a string containing the
4334 * data. This string can be empty.
4335 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004336__LJMP static int hlua_applet_http_recv_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004337{
4338 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4339 struct stream_interface *si = appctx->appctx->owner;
4340 struct channel *req = si_oc(si);
4341 struct htx *htx;
4342 struct htx_blk *blk;
4343 size_t count;
4344 int len;
4345
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004346 htx = htx_from_buf(&req->buf);
4347 len = MAY_LJMP(luaL_checkinteger(L, 2));
4348 count = co_data(req);
Christopher Faulet29f17582019-05-23 11:03:26 +02004349 blk = htx_get_head_blk(htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004350 while (count && len && blk) {
4351 enum htx_blk_type type = htx_get_blk_type(blk);
4352 uint32_t sz = htx_get_blksz(blk);
4353 struct ist v;
4354 uint32_t vlen;
4355
Christopher Faulete461e342018-12-18 16:43:35 +01004356 if (type == HTX_BLK_EOM) {
4357 len = 0;
4358 break;
4359 }
4360
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004361 vlen = sz;
4362 if (len > 0 && vlen > len)
4363 vlen = len;
4364 if (vlen > count) {
4365 if (type != HTX_BLK_DATA)
4366 break;
4367 vlen = count;
4368 }
4369
4370 switch (type) {
4371 case HTX_BLK_UNUSED:
4372 break;
4373
4374 case HTX_BLK_DATA:
4375 v = htx_get_blk_value(htx, blk);
4376 luaL_addlstring(&appctx->b, v.ptr, vlen);
4377 break;
4378
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004379 case HTX_BLK_TLR:
4380 case HTX_BLK_EOM:
4381 len = 0;
4382 break;
4383
4384 default:
4385 break;
4386 }
4387
4388 co_set_data(req, co_data(req) - vlen);
4389 count -= vlen;
4390 if (len > 0)
4391 len -= vlen;
4392 if (sz == vlen)
4393 blk = htx_remove_blk(htx, blk);
4394 else {
4395 htx_cut_data_blk(htx, blk, vlen);
4396 break;
4397 }
4398 }
4399
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004400 htx_to_buf(htx, &req->buf);
4401
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004402 /* If we are no other data available, yield waiting for new data. */
4403 if (len) {
4404 if (len > 0) {
4405 lua_pushinteger(L, len);
4406 lua_replace(L, 2);
4407 }
4408 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004409 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004410 }
4411
4412 /* return the result. */
4413 luaL_pushresult(&appctx->b);
4414 return 1;
4415}
4416
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004417/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004418__LJMP static int hlua_applet_http_recv(lua_State *L)
4419{
4420 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4421 int len = -1;
4422
4423 /* Check arguments. */
4424 if (lua_gettop(L) > 2)
4425 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
4426 if (lua_gettop(L) >= 2) {
4427 len = MAY_LJMP(luaL_checkinteger(L, 2));
4428 lua_pop(L, 1);
4429 }
4430
Christopher Fauleta2097962019-07-15 16:25:33 +02004431 lua_pushinteger(L, len);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004432
Christopher Fauleta2097962019-07-15 16:25:33 +02004433 /* Initialise the string catenation. */
4434 luaL_buffinit(L, &appctx->b);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004435
Christopher Fauleta2097962019-07-15 16:25:33 +02004436 return MAY_LJMP(hlua_applet_http_recv_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004437}
4438
4439/* Append data in the output side of the buffer. This data is immediately
4440 * sent. The function returns the amount of data written. If the buffer
4441 * cannot contain the data, the function yields. The function returns -1
4442 * if the channel is closed.
4443 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004444__LJMP static int hlua_applet_http_send_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004445{
4446 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4447 struct stream_interface *si = appctx->appctx->owner;
4448 struct channel *res = si_ic(si);
4449 struct htx *htx = htx_from_buf(&res->buf);
4450 const char *data;
4451 size_t len;
4452 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4453 int max;
4454
Christopher Faulet9060fc02019-07-03 11:39:30 +02004455 max = htx_get_max_blksz(htx, channel_htx_recv_max(res, htx));
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004456 if (!max)
4457 goto snd_yield;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004458
4459 data = MAY_LJMP(luaL_checklstring(L, 2, &len));
4460
4461 /* Get the max amount of data which can write as input in the channel. */
4462 if (max > (len - l))
4463 max = len - l;
4464
4465 /* Copy data. */
Willy Tarreau0a7ef022019-05-28 10:30:11 +02004466 max = htx_add_data(htx, ist2(data + l, max));
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004467 channel_add_input(res, max);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004468
4469 /* update counters. */
4470 l += max;
4471 lua_pop(L, 1);
4472 lua_pushinteger(L, l);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004473
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004474 /* If some data is not send, declares the situation to the
4475 * applet, and returns a yield.
4476 */
4477 if (l < len) {
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004478 snd_yield:
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004479 htx_to_buf(htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004480 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004481 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004482 }
4483
Christopher Fauleta2097962019-07-15 16:25:33 +02004484 htx_to_buf(htx, &res->buf);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004485 return 1;
4486}
4487
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004488/* Just a wrapper of "hlua_applet_send_yield". This wrapper permits
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004489 * yield the LUA process, and resume it without checking the
4490 * input arguments.
4491 */
4492__LJMP static int hlua_applet_http_send(lua_State *L)
4493{
4494 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004495
4496 /* We want to send some data. Headers must be sent. */
4497 if (!(appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
4498 hlua_pusherror(L, "Lua: 'send' you must call start_response() before sending data.");
4499 WILL_LJMP(lua_error(L));
4500 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004501
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004502 /* This integer is used for followinf the amount of data sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004503 lua_pushinteger(L, 0);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004504
Christopher Fauleta2097962019-07-15 16:25:33 +02004505 return MAY_LJMP(hlua_applet_http_send_yield(L, 0, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004506}
4507
4508__LJMP static int hlua_applet_http_addheader(lua_State *L)
4509{
4510 const char *name;
4511 int ret;
4512
4513 MAY_LJMP(hlua_checkapplet_http(L, 1));
4514 name = MAY_LJMP(luaL_checkstring(L, 2));
4515 MAY_LJMP(luaL_checkstring(L, 3));
4516
4517 /* Push in the stack the "response" entry. */
4518 ret = lua_getfield(L, 1, "response");
4519 if (ret != LUA_TTABLE) {
4520 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response'] "
4521 "is expected as an array. %s found", lua_typename(L, ret));
4522 WILL_LJMP(lua_error(L));
4523 }
4524
4525 /* check if the header is already registered if it is not
4526 * the case, register it.
4527 */
4528 ret = lua_getfield(L, -1, name);
4529 if (ret == LUA_TNIL) {
4530
4531 /* Entry not found. */
4532 lua_pop(L, 1); /* remove the nil. The "response" table is the top of the stack. */
4533
4534 /* Insert the new header name in the array in the top of the stack.
4535 * It left the new array in the top of the stack.
4536 */
4537 lua_newtable(L);
4538 lua_pushvalue(L, 2);
4539 lua_pushvalue(L, -2);
4540 lua_settable(L, -4);
4541
4542 } else if (ret != LUA_TTABLE) {
4543
4544 /* corruption error. */
4545 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response']['%s'] "
4546 "is expected as an array. %s found", name, lua_typename(L, ret));
4547 WILL_LJMP(lua_error(L));
4548 }
4549
4550 /* Now the top od thestack is an array of values. We push
4551 * the header value as new entry.
4552 */
4553 lua_pushvalue(L, 3);
4554 ret = lua_rawlen(L, -2);
4555 lua_rawseti(L, -2, ret + 1);
4556 lua_pushboolean(L, 1);
4557 return 1;
4558}
4559
4560__LJMP static int hlua_applet_http_status(lua_State *L)
4561{
4562 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4563 int status = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004564 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004565
4566 if (status < 100 || status > 599) {
4567 lua_pushboolean(L, 0);
4568 return 1;
4569 }
4570
4571 appctx->appctx->ctx.hlua_apphttp.status = status;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004572 appctx->appctx->ctx.hlua_apphttp.reason = reason;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004573 lua_pushboolean(L, 1);
4574 return 1;
4575}
4576
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004577
Christopher Fauleta2097962019-07-15 16:25:33 +02004578__LJMP static int hlua_applet_http_send_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004579{
4580 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4581 struct stream_interface *si = appctx->appctx->owner;
4582 struct channel *res = si_ic(si);
4583 struct htx *htx;
4584 struct htx_sl *sl;
4585 struct h1m h1m;
4586 const char *status, *reason;
4587 const char *name, *value;
4588 size_t nlen, vlen;
4589 unsigned int flags;
4590
4591 /* Send the message at once. */
4592 htx = htx_from_buf(&res->buf);
4593 h1m_init_res(&h1m);
4594
4595 /* Use the same http version than the request. */
4596 status = ultoa_r(appctx->appctx->ctx.hlua_apphttp.status, trash.area, trash.size);
4597 reason = appctx->appctx->ctx.hlua_apphttp.reason;
4598 if (reason == NULL)
4599 reason = http_get_reason(appctx->appctx->ctx.hlua_apphttp.status);
4600 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11) {
4601 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
4602 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"), ist(status), ist(reason));
4603 }
4604 else {
4605 flags = HTX_SL_F_IS_RESP;
4606 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"), ist(status), ist(reason));
4607 }
4608 if (!sl) {
4609 hlua_pusherror(L, "Lua applet http '%s': Failed to create response.\n",
4610 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4611 WILL_LJMP(lua_error(L));
4612 }
4613 sl->info.res.status = appctx->appctx->ctx.hlua_apphttp.status;
4614
4615 /* Get the array associated to the field "response" in the object AppletHTTP. */
4616 lua_pushvalue(L, 0);
4617 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
4618 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
4619 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4620 WILL_LJMP(lua_error(L));
4621 }
4622
4623 /* Browse the list of headers. */
4624 lua_pushnil(L);
4625 while(lua_next(L, -2) != 0) {
4626 /* We expect a string as -2. */
4627 if (lua_type(L, -2) != LUA_TSTRING) {
4628 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
4629 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4630 lua_typename(L, lua_type(L, -2)));
4631 WILL_LJMP(lua_error(L));
4632 }
4633 name = lua_tolstring(L, -2, &nlen);
4634
4635 /* We expect an array as -1. */
4636 if (lua_type(L, -1) != LUA_TTABLE) {
4637 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'] element must be an table. got %s.\n",
4638 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4639 name,
4640 lua_typename(L, lua_type(L, -1)));
4641 WILL_LJMP(lua_error(L));
4642 }
4643
4644 /* Browse the table who is on the top of the stack. */
4645 lua_pushnil(L);
4646 while(lua_next(L, -2) != 0) {
4647 int id;
4648
4649 /* We expect a number as -2. */
4650 if (lua_type(L, -2) != LUA_TNUMBER) {
4651 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][] element must be a number. got %s.\n",
4652 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4653 name,
4654 lua_typename(L, lua_type(L, -2)));
4655 WILL_LJMP(lua_error(L));
4656 }
4657 id = lua_tointeger(L, -2);
4658
4659 /* We expect a string as -2. */
4660 if (lua_type(L, -1) != LUA_TSTRING) {
4661 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][%d] element must be a string. got %s.\n",
4662 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4663 name, id,
4664 lua_typename(L, lua_type(L, -1)));
4665 WILL_LJMP(lua_error(L));
4666 }
4667 value = lua_tolstring(L, -1, &vlen);
4668
4669 /* Simple Protocol checks. */
4670 if (isteqi(ist2(name, nlen), ist("transfer-encoding")))
Christopher Faulet700d9e82020-01-31 12:21:52 +01004671 h1_parse_xfer_enc_header(&h1m, ist2(value, vlen));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004672 else if (isteqi(ist2(name, nlen), ist("content-length"))) {
4673 struct ist v = ist2(value, vlen);
4674 int ret;
4675
4676 ret = h1_parse_cont_len_header(&h1m, &v);
4677 if (ret < 0) {
4678 hlua_pusherror(L, "Lua applet http '%s': Invalid '%s' header.\n",
4679 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4680 name);
4681 WILL_LJMP(lua_error(L));
4682 }
4683 else if (ret == 0)
4684 goto next; /* Skip it */
4685 }
4686
4687 /* Add a new header */
4688 if (!htx_add_header(htx, ist2(name, nlen), ist2(value, vlen))) {
4689 hlua_pusherror(L, "Lua applet http '%s': Failed to add header '%s' in the response.\n",
4690 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4691 name);
4692 WILL_LJMP(lua_error(L));
4693 }
4694 next:
4695 /* Remove the array from the stack, and get next element with a remaining string. */
4696 lua_pop(L, 1);
4697 }
4698
4699 /* Remove the array from the stack, and get next element with a remaining string. */
4700 lua_pop(L, 1);
4701 }
4702
4703 if (h1m.flags & H1_MF_CHNK)
4704 h1m.flags &= ~H1_MF_CLEN;
4705 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
4706 h1m.flags |= H1_MF_XFER_LEN;
4707
4708 /* Uset HTX start-line flags */
4709 if (h1m.flags & H1_MF_XFER_ENC)
4710 flags |= HTX_SL_F_XFER_ENC;
4711 if (h1m.flags & H1_MF_XFER_LEN) {
4712 flags |= HTX_SL_F_XFER_LEN;
4713 if (h1m.flags & H1_MF_CHNK)
4714 flags |= HTX_SL_F_CHNK;
4715 else if (h1m.flags & H1_MF_CLEN)
4716 flags |= HTX_SL_F_CLEN;
4717 if (h1m.body_len == 0)
4718 flags |= HTX_SL_F_BODYLESS;
4719 }
4720 sl->flags |= flags;
4721
4722 /* If we dont have a content-length set, and the HTTP version is 1.1
4723 * and the status code implies the presence of a message body, we must
4724 * announce a transfer encoding chunked. This is required by haproxy
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004725 * for the keepalive compliance. If the applet announces a transfer-encoding
4726 * chunked itself, don't do anything.
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004727 */
4728 if ((flags & (HTX_SL_F_VER_11|HTX_SL_F_XFER_LEN)) == HTX_SL_F_VER_11 &&
4729 appctx->appctx->ctx.hlua_apphttp.status >= 200 &&
4730 appctx->appctx->ctx.hlua_apphttp.status != 204 &&
4731 appctx->appctx->ctx.hlua_apphttp.status != 304) {
4732 /* Add a new header */
4733 sl->flags |= (HTX_SL_F_XFER_ENC|H1_MF_CHNK|H1_MF_XFER_LEN);
4734 if (!htx_add_header(htx, ist("transfer-encoding"), ist("chunked"))) {
4735 hlua_pusherror(L, "Lua applet http '%s': Failed to add header 'transfer-encoding' in the response.\n",
4736 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4737 WILL_LJMP(lua_error(L));
4738 }
4739 }
4740
4741 /* Finalize headers. */
4742 if (!htx_add_endof(htx, HTX_BLK_EOH)) {
4743 hlua_pusherror(L, "Lua applet http '%s': Failed create the response.\n",
4744 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4745 WILL_LJMP(lua_error(L));
4746 }
4747
4748 if (htx_used_space(htx) > b_size(&res->buf) - global.tune.maxrewrite) {
4749 b_reset(&res->buf);
4750 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4751 WILL_LJMP(lua_error(L));
4752 }
4753
4754 htx_to_buf(htx, &res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004755 channel_add_input(res, htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004756
4757 /* Headers sent, set the flag. */
4758 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4759 return 0;
4760
4761}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004762/* We will build the status line and the headers of the HTTP response.
4763 * We will try send at once if its not possible, we give back the hand
4764 * waiting for more room.
4765 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004766__LJMP static int hlua_applet_http_start_response_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004767{
4768 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4769 struct stream_interface *si = appctx->appctx->owner;
4770 struct channel *res = si_ic(si);
4771
4772 if (co_data(res)) {
4773 si_rx_room_blk(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004774 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_start_response_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004775 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004776 return MAY_LJMP(hlua_applet_http_send_response(L));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004777}
4778
4779
Christopher Fauleta2097962019-07-15 16:25:33 +02004780__LJMP static int hlua_applet_http_start_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004781{
Christopher Fauleta2097962019-07-15 16:25:33 +02004782 return MAY_LJMP(hlua_applet_http_start_response_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004783}
4784
Christopher Fauleta2097962019-07-15 16:25:33 +02004785/*
4786 *
4787 *
4788 * Class HTTP
4789 *
4790 *
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004791 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004792
4793/* Returns a struct hlua_txn if the stack entry "ud" is
4794 * a class stream, otherwise it throws an error.
4795 */
4796__LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004797{
Christopher Fauleta2097962019-07-15 16:25:33 +02004798 return MAY_LJMP(hlua_checkudata(L, ud, class_http_ref));
4799}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004800
Christopher Fauleta2097962019-07-15 16:25:33 +02004801/* This function creates and push in the stack a HTTP object
4802 * according with a current TXN.
4803 */
4804static int hlua_http_new(lua_State *L, struct hlua_txn *txn)
4805{
4806 struct hlua_txn *htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004807
Christopher Fauleta2097962019-07-15 16:25:33 +02004808 /* Check stack size. */
4809 if (!lua_checkstack(L, 3))
4810 return 0;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004811
Christopher Fauleta2097962019-07-15 16:25:33 +02004812 /* Create the object: obj[0] = userdata.
4813 * Note that the base of the Converters object is the
4814 * same than the TXN object.
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004815 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004816 lua_newtable(L);
4817 htxn = lua_newuserdata(L, sizeof(*htxn));
4818 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004819
4820 htxn->s = txn->s;
4821 htxn->p = txn->p;
Christopher Faulet256b69a2019-05-23 11:14:21 +02004822 htxn->dir = txn->dir;
4823 htxn->flags = txn->flags;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004824
4825 /* Pop a class stream metatable and affect it to the table. */
4826 lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref);
4827 lua_setmetatable(L, -2);
4828
4829 return 1;
4830}
4831
4832/* This function creates ans returns an array of HTTP headers.
4833 * This function does not fails. It is used as wrapper with the
4834 * 2 following functions.
4835 */
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004836__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004837{
Christopher Fauleta2097962019-07-15 16:25:33 +02004838 struct htx *htx;
4839 int32_t pos;
4840
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004841 /* Create the table. */
4842 lua_newtable(L);
4843
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004844
Christopher Fauleta2097962019-07-15 16:25:33 +02004845 htx = htxbuf(&msg->chn->buf);
4846 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4847 struct htx_blk *blk = htx_get_blk(htx, pos);
4848 enum htx_blk_type type = htx_get_blk_type(blk);
4849 struct ist n, v;
4850 int len;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004851
Christopher Fauleta2097962019-07-15 16:25:33 +02004852 if (type == HTX_BLK_HDR) {
4853 n = htx_get_blk_name(htx,blk);
4854 v = htx_get_blk_value(htx, blk);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004855 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004856 else if (type == HTX_BLK_EOH)
4857 break;
4858 else
4859 continue;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004860
Christopher Fauleta2097962019-07-15 16:25:33 +02004861 /* Check for existing entry:
4862 * assume that the table is on the top of the stack, and
4863 * push the key in the stack, the function lua_gettable()
4864 * perform the lookup.
4865 */
4866 lua_pushlstring(L, n.ptr, n.len);
4867 lua_gettable(L, -2);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004868
Christopher Fauleta2097962019-07-15 16:25:33 +02004869 switch (lua_type(L, -1)) {
4870 case LUA_TNIL:
4871 /* Table not found, create it. */
4872 lua_pop(L, 1); /* remove the nil value. */
4873 lua_pushlstring(L, n.ptr, n.len); /* push the header name as key. */
4874 lua_newtable(L); /* create and push empty table. */
4875 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
4876 lua_rawseti(L, -2, 0); /* index header value (pop it). */
4877 lua_rawset(L, -3); /* index new table with header name (pop the values). */
Christopher Faulet724a12c2018-12-13 22:12:15 +01004878 break;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004879
Christopher Fauleta2097962019-07-15 16:25:33 +02004880 case LUA_TTABLE:
4881 /* Entry found: push the value in the table. */
4882 len = lua_rawlen(L, -1);
4883 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
4884 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
4885 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
4886 break;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004887
Christopher Fauleta2097962019-07-15 16:25:33 +02004888 default:
4889 /* Other cases are errors. */
4890 hlua_pusherror(L, "internal error during the parsing of headers.");
4891 WILL_LJMP(lua_error(L));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004892 }
4893 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004894 return 1;
4895}
4896
4897__LJMP static int hlua_http_req_get_headers(lua_State *L)
4898{
4899 struct hlua_txn *htxn;
4900
4901 MAY_LJMP(check_args(L, 1, "req_get_headers"));
4902 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4903
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004904 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004905 WILL_LJMP(lua_error(L));
4906
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004907 return hlua_http_get_headers(L, &htxn->s->txn->req);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004908}
4909
4910__LJMP static int hlua_http_res_get_headers(lua_State *L)
4911{
4912 struct hlua_txn *htxn;
4913
4914 MAY_LJMP(check_args(L, 1, "res_get_headers"));
4915 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4916
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004917 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004918 WILL_LJMP(lua_error(L));
4919
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004920 return hlua_http_get_headers(L, &htxn->s->txn->rsp);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004921}
4922
4923/* This function replace full header, or just a value in
4924 * the request or in the response. It is a wrapper fir the
4925 * 4 following functions.
4926 */
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004927__LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct http_msg *msg, int full)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004928{
4929 size_t name_len;
4930 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
4931 const char *reg = MAY_LJMP(luaL_checkstring(L, 3));
4932 const char *value = MAY_LJMP(luaL_checkstring(L, 4));
Christopher Fauleta2097962019-07-15 16:25:33 +02004933 struct htx *htx;
Dragan Dosen26743032019-04-30 15:54:36 +02004934 struct my_regex *re;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004935
Dragan Dosen26743032019-04-30 15:54:36 +02004936 if (!(re = regex_comp(reg, 1, 1, NULL)))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004937 WILL_LJMP(luaL_argerror(L, 3, "invalid regex"));
4938
Christopher Fauleta2097962019-07-15 16:25:33 +02004939 htx = htxbuf(&msg->chn->buf);
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004940 http_replace_hdrs(chn_strm(msg->chn), htx, ist2(name, name_len), value, re, full);
Dragan Dosen26743032019-04-30 15:54:36 +02004941 regex_free(re);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004942 return 0;
4943}
4944
4945__LJMP static int hlua_http_req_rep_hdr(lua_State *L)
4946{
4947 struct hlua_txn *htxn;
4948
4949 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
4950 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4951
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004952 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004953 WILL_LJMP(lua_error(L));
4954
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004955 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004956}
4957
4958__LJMP static int hlua_http_res_rep_hdr(lua_State *L)
4959{
4960 struct hlua_txn *htxn;
4961
4962 MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
4963 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4964
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004965 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004966 WILL_LJMP(lua_error(L));
4967
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004968 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004969}
4970
4971__LJMP static int hlua_http_req_rep_val(lua_State *L)
4972{
4973 struct hlua_txn *htxn;
4974
4975 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
4976 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4977
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004978 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004979 WILL_LJMP(lua_error(L));
4980
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004981 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004982}
4983
4984__LJMP static int hlua_http_res_rep_val(lua_State *L)
4985{
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004986 struct hlua_txn *htxn;
4987
4988 MAY_LJMP(check_args(L, 4, "res_rep_val"));
4989 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4990
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004991 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004992 WILL_LJMP(lua_error(L));
4993
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004994 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004995}
4996
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004997/* This function deletes all the occurrences of an header.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004998 * It is a wrapper for the 2 following functions.
4999 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005000__LJMP static inline int hlua_http_del_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005001{
5002 size_t len;
5003 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005004 struct htx *htx = htxbuf(&msg->chn->buf);
5005 struct http_hdr_ctx ctx;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005006
Christopher Fauleta2097962019-07-15 16:25:33 +02005007 ctx.blk = NULL;
5008 while (http_find_header(htx, ist2(name, len), &ctx, 1))
5009 http_remove_header(htx, &ctx);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005010 return 0;
5011}
5012
5013__LJMP static int hlua_http_req_del_hdr(lua_State *L)
5014{
5015 struct hlua_txn *htxn;
5016
5017 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
5018 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5019
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005020 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005021 WILL_LJMP(lua_error(L));
5022
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005023 return hlua_http_del_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005024}
5025
5026__LJMP static int hlua_http_res_del_hdr(lua_State *L)
5027{
5028 struct hlua_txn *htxn;
5029
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005030 MAY_LJMP(check_args(L, 2, "res_del_hdr"));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005031 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5032
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005033 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005034 WILL_LJMP(lua_error(L));
5035
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005036 return hlua_http_del_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005037}
5038
5039/* This function adds an header. It is a wrapper used by
5040 * the 2 following functions.
5041 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005042__LJMP static inline int hlua_http_add_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005043{
5044 size_t name_len;
5045 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5046 size_t value_len;
5047 const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005048 struct htx *htx = htxbuf(&msg->chn->buf);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005049
Christopher Fauleta2097962019-07-15 16:25:33 +02005050 lua_pushboolean(L, http_add_header(htx, ist2(name, name_len),
5051 ist2(value, value_len)));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005052 return 0;
5053}
5054
5055__LJMP static int hlua_http_req_add_hdr(lua_State *L)
5056{
5057 struct hlua_txn *htxn;
5058
5059 MAY_LJMP(check_args(L, 3, "req_add_hdr"));
5060 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5061
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005062 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005063 WILL_LJMP(lua_error(L));
5064
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005065 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005066}
5067
5068__LJMP static int hlua_http_res_add_hdr(lua_State *L)
5069{
5070 struct hlua_txn *htxn;
5071
5072 MAY_LJMP(check_args(L, 3, "res_add_hdr"));
5073 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5074
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005075 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005076 WILL_LJMP(lua_error(L));
5077
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005078 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005079}
5080
5081static int hlua_http_req_set_hdr(lua_State *L)
5082{
5083 struct hlua_txn *htxn;
5084
5085 MAY_LJMP(check_args(L, 3, "req_set_hdr"));
5086 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5087
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005088 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005089 WILL_LJMP(lua_error(L));
5090
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005091 hlua_http_del_hdr(L, &htxn->s->txn->req);
5092 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005093}
5094
5095static int hlua_http_res_set_hdr(lua_State *L)
5096{
5097 struct hlua_txn *htxn;
5098
5099 MAY_LJMP(check_args(L, 3, "res_set_hdr"));
5100 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5101
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005102 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005103 WILL_LJMP(lua_error(L));
5104
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005105 hlua_http_del_hdr(L, &htxn->s->txn->rsp);
5106 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005107}
5108
5109/* This function set the method. */
5110static int hlua_http_req_set_meth(lua_State *L)
5111{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005112 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005113 size_t name_len;
5114 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005115
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005116 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005117 WILL_LJMP(lua_error(L));
5118
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005119 lua_pushboolean(L, http_req_replace_stline(0, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005120 return 1;
5121}
5122
5123/* This function set the method. */
5124static int hlua_http_req_set_path(lua_State *L)
5125{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005126 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005127 size_t name_len;
5128 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02005129
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005130 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005131 WILL_LJMP(lua_error(L));
5132
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005133 lua_pushboolean(L, http_req_replace_stline(1, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005134 return 1;
5135}
5136
5137/* This function set the query-string. */
5138static int hlua_http_req_set_query(lua_State *L)
5139{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005140 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005141 size_t name_len;
5142 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005143
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005144 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005145 WILL_LJMP(lua_error(L));
5146
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005147 /* Check length. */
5148 if (name_len > trash.size - 1) {
5149 lua_pushboolean(L, 0);
5150 return 1;
5151 }
5152
5153 /* Add the mark question as prefix. */
5154 chunk_reset(&trash);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005155 trash.area[trash.data++] = '?';
5156 memcpy(trash.area + trash.data, name, name_len);
5157 trash.data += name_len;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005158
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005159 lua_pushboolean(L,
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005160 http_req_replace_stline(2, trash.area, trash.data, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005161 return 1;
5162}
5163
5164/* This function set the uri. */
5165static int hlua_http_req_set_uri(lua_State *L)
5166{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005167 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005168 size_t name_len;
5169 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005170
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005171 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005172 WILL_LJMP(lua_error(L));
5173
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005174 lua_pushboolean(L, http_req_replace_stline(3, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005175 return 1;
5176}
5177
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005178/* This function set the response code & optionally reason. */
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005179static int hlua_http_res_set_status(lua_State *L)
5180{
5181 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5182 unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
Christopher Faulet96bff762019-12-17 13:46:18 +01005183 const char *str = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
5184 const struct ist reason = ist2(str, (str ? strlen(str) : 0));
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005185
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005186 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005187 WILL_LJMP(lua_error(L));
5188
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005189 http_res_set_status(code, reason, htxn->s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005190 return 0;
5191}
5192
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005193/*
5194 *
5195 *
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005196 * Class TXN
5197 *
5198 *
5199 */
5200
5201/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02005202 * a class stream, otherwise it throws an error.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005203 */
5204__LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud)
5205{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005206 return MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005207}
5208
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005209__LJMP static int hlua_set_var(lua_State *L)
5210{
5211 struct hlua_txn *htxn;
5212 const char *name;
5213 size_t len;
5214 struct sample smp;
5215
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005216 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
5217 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005218
5219 /* It is useles to retrieve the stream, but this function
5220 * runs only in a stream context.
5221 */
5222 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5223 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5224
5225 /* Converts the third argument in a sample. */
5226 hlua_lua2smp(L, 3, &smp);
5227
5228 /* Store the sample in a variable. */
Willy Tarreau7560dd42016-03-10 16:28:58 +01005229 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005230
5231 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
5232 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
5233 else
5234 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
5235
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005236 return 1;
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005237}
5238
Christopher Faulet85d79c92016-11-09 16:54:56 +01005239__LJMP static int hlua_unset_var(lua_State *L)
5240{
5241 struct hlua_txn *htxn;
5242 const char *name;
5243 size_t len;
5244 struct sample smp;
5245
5246 MAY_LJMP(check_args(L, 2, "unset_var"));
5247
5248 /* It is useles to retrieve the stream, but this function
5249 * runs only in a stream context.
5250 */
5251 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5252 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5253
5254 /* Unset the variable. */
5255 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005256 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
5257 return 1;
Christopher Faulet85d79c92016-11-09 16:54:56 +01005258}
5259
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005260__LJMP static int hlua_get_var(lua_State *L)
5261{
5262 struct hlua_txn *htxn;
5263 const char *name;
5264 size_t len;
5265 struct sample smp;
5266
5267 MAY_LJMP(check_args(L, 2, "get_var"));
5268
5269 /* It is useles to retrieve the stream, but this function
5270 * runs only in a stream context.
5271 */
5272 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5273 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5274
Willy Tarreau7560dd42016-03-10 16:28:58 +01005275 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01005276 if (!vars_get_by_name(name, len, &smp)) {
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005277 lua_pushnil(L);
5278 return 1;
5279 }
5280
5281 return hlua_smp2lua(L, &smp);
5282}
5283
Willy Tarreau59551662015-03-10 14:23:13 +01005284__LJMP static int hlua_set_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005285{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005286 struct hlua *hlua;
5287
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005288 MAY_LJMP(check_args(L, 2, "set_priv"));
5289
Willy Tarreau87b09662015-04-03 00:22:06 +02005290 /* It is useles to retrieve the stream, but this function
5291 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005292 */
5293 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005294 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005295
5296 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02005297 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005298
5299 /* Get and store new value. */
5300 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
5301 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
5302
5303 return 0;
5304}
5305
Willy Tarreau59551662015-03-10 14:23:13 +01005306__LJMP static int hlua_get_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005307{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005308 struct hlua *hlua;
5309
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005310 MAY_LJMP(check_args(L, 1, "get_priv"));
5311
Willy Tarreau87b09662015-04-03 00:22:06 +02005312 /* It is useles to retrieve the stream, but this function
5313 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005314 */
5315 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005316 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005317
5318 /* Push configuration index in the stack. */
5319 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
5320
5321 return 1;
5322}
5323
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005324/* Create stack entry containing a class TXN. This function
5325 * return 0 if the stack does not contains free slots,
5326 * otherwise it returns 1.
5327 */
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005328static int hlua_txn_new(lua_State *L, struct stream *s, struct proxy *p, int dir, int flags)
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005329{
Willy Tarreaude491382015-04-06 11:04:28 +02005330 struct hlua_txn *htxn;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005331
5332 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005333 if (!lua_checkstack(L, 3))
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005334 return 0;
5335
5336 /* NOTE: The allocation never fails. The failure
5337 * throw an error, and the function never returns.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005338 * if the throw is not available, the process is aborted.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005339 */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005340 /* Create the object: obj[0] = userdata. */
5341 lua_newtable(L);
Willy Tarreaude491382015-04-06 11:04:28 +02005342 htxn = lua_newuserdata(L, sizeof(*htxn));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005343 lua_rawseti(L, -2, 0);
5344
Willy Tarreaude491382015-04-06 11:04:28 +02005345 htxn->s = s;
5346 htxn->p = p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01005347 htxn->dir = dir;
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005348 htxn->flags = flags;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005349
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005350 /* Create the "f" field that contains a list of fetches. */
5351 lua_pushstring(L, "f");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005352 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005353 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005354 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005355
5356 /* Create the "sf" field that contains a list of stringsafe fetches. */
5357 lua_pushstring(L, "sf");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005358 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP | HLUA_F_AS_STRING))
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005359 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005360 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005361
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005362 /* Create the "c" field that contains a list of converters. */
5363 lua_pushstring(L, "c");
Willy Tarreaude491382015-04-06 11:04:28 +02005364 if (!hlua_converters_new(L, htxn, 0))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005365 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005366 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005367
5368 /* Create the "sc" field that contains a list of stringsafe converters. */
5369 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01005370 if (!hlua_converters_new(L, htxn, HLUA_F_AS_STRING))
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005371 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005372 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005373
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005374 /* Create the "req" field that contains the request channel object. */
5375 lua_pushstring(L, "req");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005376 if (!hlua_channel_new(L, &s->req))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005377 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005378 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005379
5380 /* Create the "res" field that contains the response channel object. */
5381 lua_pushstring(L, "res");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005382 if (!hlua_channel_new(L, &s->res))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005383 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005384 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005385
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005386 /* Creates the HTTP object is the current proxy allows http. */
5387 lua_pushstring(L, "http");
5388 if (p->mode == PR_MODE_HTTP) {
Willy Tarreaude491382015-04-06 11:04:28 +02005389 if (!hlua_http_new(L, htxn))
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005390 return 0;
5391 }
5392 else
5393 lua_pushnil(L);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005394 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005395
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005396 /* Pop a class sesison metatable and affect it to the userdata. */
5397 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref);
5398 lua_setmetatable(L, -2);
5399
5400 return 1;
5401}
5402
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005403__LJMP static int hlua_txn_deflog(lua_State *L)
5404{
5405 const char *msg;
5406 struct hlua_txn *htxn;
5407
5408 MAY_LJMP(check_args(L, 2, "deflog"));
5409 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5410 msg = MAY_LJMP(luaL_checkstring(L, 2));
5411
5412 hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg);
5413 return 0;
5414}
5415
5416__LJMP static int hlua_txn_log(lua_State *L)
5417{
5418 int level;
5419 const char *msg;
5420 struct hlua_txn *htxn;
5421
5422 MAY_LJMP(check_args(L, 3, "log"));
5423 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5424 level = MAY_LJMP(luaL_checkinteger(L, 2));
5425 msg = MAY_LJMP(luaL_checkstring(L, 3));
5426
5427 if (level < 0 || level >= NB_LOG_LEVELS)
5428 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
5429
5430 hlua_sendlog(htxn->s->be, level, msg);
5431 return 0;
5432}
5433
5434__LJMP static int hlua_txn_log_debug(lua_State *L)
5435{
5436 const char *msg;
5437 struct hlua_txn *htxn;
5438
5439 MAY_LJMP(check_args(L, 2, "Debug"));
5440 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5441 msg = MAY_LJMP(luaL_checkstring(L, 2));
5442 hlua_sendlog(htxn->s->be, LOG_DEBUG, msg);
5443 return 0;
5444}
5445
5446__LJMP static int hlua_txn_log_info(lua_State *L)
5447{
5448 const char *msg;
5449 struct hlua_txn *htxn;
5450
5451 MAY_LJMP(check_args(L, 2, "Info"));
5452 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5453 msg = MAY_LJMP(luaL_checkstring(L, 2));
5454 hlua_sendlog(htxn->s->be, LOG_INFO, msg);
5455 return 0;
5456}
5457
5458__LJMP static int hlua_txn_log_warning(lua_State *L)
5459{
5460 const char *msg;
5461 struct hlua_txn *htxn;
5462
5463 MAY_LJMP(check_args(L, 2, "Warning"));
5464 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5465 msg = MAY_LJMP(luaL_checkstring(L, 2));
5466 hlua_sendlog(htxn->s->be, LOG_WARNING, msg);
5467 return 0;
5468}
5469
5470__LJMP static int hlua_txn_log_alert(lua_State *L)
5471{
5472 const char *msg;
5473 struct hlua_txn *htxn;
5474
5475 MAY_LJMP(check_args(L, 2, "Alert"));
5476 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5477 msg = MAY_LJMP(luaL_checkstring(L, 2));
5478 hlua_sendlog(htxn->s->be, LOG_ALERT, msg);
5479 return 0;
5480}
5481
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005482__LJMP static int hlua_txn_set_loglevel(lua_State *L)
5483{
5484 struct hlua_txn *htxn;
5485 int ll;
5486
5487 MAY_LJMP(check_args(L, 2, "set_loglevel"));
5488 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5489 ll = MAY_LJMP(luaL_checkinteger(L, 2));
5490
5491 if (ll < 0 || ll > 7)
5492 WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
5493
5494 htxn->s->logs.level = ll;
5495 return 0;
5496}
5497
5498__LJMP static int hlua_txn_set_tos(lua_State *L)
5499{
5500 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005501 int tos;
5502
5503 MAY_LJMP(check_args(L, 2, "set_tos"));
5504 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5505 tos = MAY_LJMP(luaL_checkinteger(L, 2));
5506
Willy Tarreau1a18b542018-12-11 16:37:42 +01005507 conn_set_tos(objt_conn(htxn->s->sess->origin), tos);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005508 return 0;
5509}
5510
5511__LJMP static int hlua_txn_set_mark(lua_State *L)
5512{
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005513 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005514 int mark;
5515
5516 MAY_LJMP(check_args(L, 2, "set_mark"));
5517 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5518 mark = MAY_LJMP(luaL_checkinteger(L, 2));
5519
Lukas Tribus579e3e32019-08-11 18:03:45 +02005520 conn_set_mark(objt_conn(htxn->s->sess->origin), mark);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005521 return 0;
5522}
5523
Patrick Hemmer268a7072018-05-11 12:52:31 -04005524__LJMP static int hlua_txn_set_priority_class(lua_State *L)
5525{
5526 struct hlua_txn *htxn;
5527
5528 MAY_LJMP(check_args(L, 2, "set_priority_class"));
5529 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5530 htxn->s->priority_class = queue_limit_class(MAY_LJMP(luaL_checkinteger(L, 2)));
5531 return 0;
5532}
5533
5534__LJMP static int hlua_txn_set_priority_offset(lua_State *L)
5535{
5536 struct hlua_txn *htxn;
5537
5538 MAY_LJMP(check_args(L, 2, "set_priority_offset"));
5539 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5540 htxn->s->priority_offset = queue_limit_offset(MAY_LJMP(luaL_checkinteger(L, 2)));
5541 return 0;
5542}
5543
Christopher Faulet700d9e82020-01-31 12:21:52 +01005544/* Forward the Reply object to the client. This function converts the reply in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05005545 * HTX an push it to into the response channel. It is response to forward the
Christopher Faulet700d9e82020-01-31 12:21:52 +01005546 * message and terminate the transaction. It returns 1 on success and 0 on
5547 * error. The Reply must be on top of the stack.
5548 */
5549__LJMP static int hlua_txn_forward_reply(lua_State *L, struct stream *s)
5550{
5551 struct htx *htx;
5552 struct htx_sl *sl;
5553 struct h1m h1m;
5554 const char *status, *reason, *body;
5555 size_t status_len, reason_len, body_len;
5556 int ret, code, flags;
5557
5558 code = 200;
5559 status = "200";
5560 status_len = 3;
5561 ret = lua_getfield(L, -1, "status");
5562 if (ret == LUA_TNUMBER) {
5563 code = lua_tointeger(L, -1);
5564 status = lua_tolstring(L, -1, &status_len);
5565 }
5566 lua_pop(L, 1);
5567
5568 reason = http_get_reason(code);
5569 reason_len = strlen(reason);
5570 ret = lua_getfield(L, -1, "reason");
5571 if (ret == LUA_TSTRING)
5572 reason = lua_tolstring(L, -1, &reason_len);
5573 lua_pop(L, 1);
5574
5575 body = NULL;
5576 body_len = 0;
5577 ret = lua_getfield(L, -1, "body");
5578 if (ret == LUA_TSTRING)
5579 body = lua_tolstring(L, -1, &body_len);
5580 lua_pop(L, 1);
5581
5582 /* Prepare the response before inserting the headers */
5583 h1m_init_res(&h1m);
5584 htx = htx_from_buf(&s->res.buf);
5585 channel_htx_truncate(&s->res, htx);
5586 if (s->txn->req.flags & HTTP_MSGF_VER_11) {
5587 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
5588 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"),
5589 ist2(status, status_len), ist2(reason, reason_len));
5590 }
5591 else {
5592 flags = HTX_SL_F_IS_RESP;
5593 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"),
5594 ist2(status, status_len), ist2(reason, reason_len));
5595 }
5596 if (!sl)
5597 goto fail;
5598 sl->info.res.status = code;
5599
5600 /* Push in the stack the "headers" entry. */
5601 ret = lua_getfield(L, -1, "headers");
5602 if (ret != LUA_TTABLE)
5603 goto skip_headers;
5604
5605 lua_pushnil(L);
5606 while (lua_next(L, -2) != 0) {
5607 struct ist name, value;
5608 const char *n, *v;
5609 size_t nlen, vlen;
5610
5611 if (!lua_isstring(L, -2) || !lua_istable(L, -1)) {
5612 /* Skip element if the key is not a string or if the value is not a table */
5613 goto next_hdr;
5614 }
5615
5616 n = lua_tolstring(L, -2, &nlen);
5617 name = ist2(n, nlen);
5618 if (isteqi(name, ist("content-length"))) {
5619 /* Always skip content-length header. It will be added
5620 * later with the correct len
5621 */
5622 goto next_hdr;
5623 }
5624
5625 /* Loop on header's values */
5626 lua_pushnil(L);
5627 while (lua_next(L, -2)) {
5628 if (!lua_isstring(L, -1)) {
5629 /* Skip the value if it is not a string */
5630 goto next_value;
5631 }
5632
5633 v = lua_tolstring(L, -1, &vlen);
5634 value = ist2(v, vlen);
5635
5636 if (isteqi(name, ist("transfer-encoding")))
5637 h1_parse_xfer_enc_header(&h1m, value);
5638 if (!htx_add_header(htx, ist2(n, nlen), ist2(v, vlen)))
5639 goto fail;
5640
5641 next_value:
5642 lua_pop(L, 1);
5643 }
5644
5645 next_hdr:
5646 lua_pop(L, 1);
5647 }
5648 skip_headers:
5649 lua_pop(L, 1);
5650
5651 /* Update h1m flags: CLEN is set if CHNK is not present */
5652 if (!(h1m.flags & H1_MF_CHNK)) {
5653 const char *clen = ultoa(body_len);
5654
5655 h1m.flags |= H1_MF_CLEN;
5656 if (!htx_add_header(htx, ist("content-length"), ist(clen)))
5657 goto fail;
5658 }
5659 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
5660 h1m.flags |= H1_MF_XFER_LEN;
5661
5662 /* Update HTX start-line flags */
5663 if (h1m.flags & H1_MF_XFER_ENC)
5664 flags |= HTX_SL_F_XFER_ENC;
5665 if (h1m.flags & H1_MF_XFER_LEN) {
5666 flags |= HTX_SL_F_XFER_LEN;
5667 if (h1m.flags & H1_MF_CHNK)
5668 flags |= HTX_SL_F_CHNK;
5669 else if (h1m.flags & H1_MF_CLEN)
5670 flags |= HTX_SL_F_CLEN;
5671 if (h1m.body_len == 0)
5672 flags |= HTX_SL_F_BODYLESS;
5673 }
5674 sl->flags |= flags;
5675
5676
5677 if (!htx_add_endof(htx, HTX_BLK_EOH) ||
5678 (body_len && !htx_add_data_atonce(htx, ist2(body, body_len))) ||
5679 !htx_add_endof(htx, HTX_BLK_EOM))
5680 goto fail;
5681
5682 /* Now, forward the response and terminate the transaction */
5683 s->txn->status = code;
5684 htx_to_buf(htx, &s->res.buf);
5685 if (!http_forward_proxy_resp(s, 1))
5686 goto fail;
5687
5688 return 1;
5689
5690 fail:
5691 channel_htx_truncate(&s->res, htx);
5692 return 0;
5693}
5694
5695/* Terminate a transaction if called from a lua action. For TCP streams,
5696 * processing is just aborted. Nothing is returned to the client and all
5697 * arguments are ignored. For HTTP streams, if a reply is passed as argument, it
5698 * is forwarded to the client before terminating the transaction. On success,
5699 * the function exits with ACT_RET_DONE code. If an error occurred, it exits
5700 * with ACT_RET_ERR code. If this function is not called from a lua action, it
5701 * just exits without any processing.
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005702 */
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005703__LJMP static int hlua_txn_done(lua_State *L)
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005704{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005705 struct hlua_txn *htxn;
Christopher Faulet700d9e82020-01-31 12:21:52 +01005706 struct stream *s;
5707 int finst;
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005708
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005709 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005710
Christopher Faulet700d9e82020-01-31 12:21:52 +01005711 /* If the flags NOTERM is set, we cannot terminate the session, so we
5712 * just end the execution of the current lua code. */
5713 if (htxn->flags & HLUA_TXN_NOTERM)
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005714 WILL_LJMP(hlua_done(L));
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005715
Christopher Faulet700d9e82020-01-31 12:21:52 +01005716 s = htxn->s;
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005717 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005718 struct channel *req = &s->req;
5719 struct channel *res = &s->res;
Willy Tarreau81389672015-03-10 12:03:52 +01005720
Christopher Faulet700d9e82020-01-31 12:21:52 +01005721 channel_auto_read(req);
5722 channel_abort(req);
5723 channel_auto_close(req);
5724 channel_erase(req);
5725
5726 res->wex = tick_add_ifset(now_ms, res->wto);
5727 channel_auto_read(res);
5728 channel_auto_close(res);
5729 channel_shutr_now(res);
5730
5731 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_D);
5732 goto done;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005733 }
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02005734
Christopher Faulet700d9e82020-01-31 12:21:52 +01005735 if (lua_gettop(L) == 1 || !lua_istable(L, 2)) {
5736 /* No reply or invalid reply */
5737 s->txn->status = 0;
5738 http_reply_and_close(s, 0, NULL);
5739 }
5740 else {
5741 /* Remove extra args to have the reply on top of the stack */
5742 if (lua_gettop(L) > 2)
5743 lua_pop(L, lua_gettop(L) - 2);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005744
Christopher Faulet700d9e82020-01-31 12:21:52 +01005745 if (!hlua_txn_forward_reply(L, s)) {
5746 if (!(s->flags & SF_ERR_MASK))
5747 s->flags |= SF_ERR_PRXCOND;
5748 lua_pushinteger(L, ACT_RET_ERR);
5749 WILL_LJMP(hlua_done(L));
5750 return 0; /* Never reached */
5751 }
Christopher Faulet4d0e2632019-07-16 10:52:40 +02005752 }
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005753
Christopher Faulet700d9e82020-01-31 12:21:52 +01005754 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_H);
5755 if (htxn->dir == SMP_OPT_DIR_REQ) {
5756 /* let's log the request time */
5757 s->logs.tv_request = now;
5758 if (s->sess->fe == s->be) /* report it if the request was intercepted by the frontend */
5759 _HA_ATOMIC_ADD(&s->sess->fe->fe_counters.intercepted_req, 1);
5760 }
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005761
Christopher Faulet700d9e82020-01-31 12:21:52 +01005762 done:
5763 if (!(s->flags & SF_ERR_MASK))
5764 s->flags |= SF_ERR_LOCAL;
5765 if (!(s->flags & SF_FINST_MASK))
5766 s->flags |= finst;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005767
Christopher Faulet4ad73102020-03-05 11:07:31 +01005768 lua_pushinteger(L, ACT_RET_ABRT);
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005769 WILL_LJMP(hlua_done(L));
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005770 return 0;
5771}
5772
Christopher Faulet700d9e82020-01-31 12:21:52 +01005773/*
5774 *
5775 *
5776 * Class REPLY
5777 *
5778 *
5779 */
5780
5781/* Pushes the TXN reply onto the top of the stack. If the stask does not have a
5782 * free slots, the function fails and returns 0;
5783 */
5784static int hlua_txn_reply_new(lua_State *L)
5785{
5786 struct hlua_txn *htxn;
5787 const char *reason, *body = NULL;
5788 int ret, status;
5789
5790 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005791 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005792 hlua_pusherror(L, "txn object is not an HTTP transaction.");
5793 WILL_LJMP(lua_error(L));
5794 }
5795
5796 /* Default value */
5797 status = 200;
5798 reason = http_get_reason(status);
5799
5800 if (lua_istable(L, 2)) {
5801 /* load status and reason from the table argument at index 2 */
5802 ret = lua_getfield(L, 2, "status");
5803 if (ret == LUA_TNIL)
5804 goto reason;
5805 else if (ret != LUA_TNUMBER) {
5806 /* invalid status: ignore the reason */
5807 goto body;
5808 }
5809 status = lua_tointeger(L, -1);
5810
5811 reason:
5812 lua_pop(L, 1); /* restore the stack: remove status */
5813 ret = lua_getfield(L, 2, "reason");
5814 if (ret == LUA_TSTRING)
5815 reason = lua_tostring(L, -1);
5816
5817 body:
5818 lua_pop(L, 1); /* restore the stack: remove invalid status or reason */
5819 ret = lua_getfield(L, 2, "body");
5820 if (ret == LUA_TSTRING)
5821 body = lua_tostring(L, -1);
5822 lua_pop(L, 1); /* restore the stack: remove body */
5823 }
5824
5825 /* Create the Reply table */
5826 lua_newtable(L);
5827
5828 /* Add status element */
5829 lua_pushstring(L, "status");
5830 lua_pushinteger(L, status);
5831 lua_settable(L, -3);
5832
5833 /* Add reason element */
5834 reason = http_get_reason(status);
5835 lua_pushstring(L, "reason");
5836 lua_pushstring(L, reason);
5837 lua_settable(L, -3);
5838
5839 /* Add body element, nil if undefined */
5840 lua_pushstring(L, "body");
5841 if (body)
5842 lua_pushstring(L, body);
5843 else
5844 lua_pushnil(L);
5845 lua_settable(L, -3);
5846
5847 /* Add headers element */
5848 lua_pushstring(L, "headers");
5849 lua_newtable(L);
5850
5851 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
5852 if (lua_istable(L, 2)) {
5853 /* load headers from the table argument at index 2. If it is a table, copy it. */
5854 ret = lua_getfield(L, 2, "headers");
5855 if (ret == LUA_TTABLE) {
5856 /* stack: [ ... <headers:table>, <table> ] */
5857 lua_pushnil(L);
5858 while (lua_next(L, -2) != 0) {
5859 /* stack: [ ... <headers:table>, <table>, k, v] */
5860 if (!lua_isstring(L, -1) && !lua_istable(L, -1)) {
5861 /* invalid value type, skip it */
5862 lua_pop(L, 1);
5863 continue;
5864 }
5865
5866
5867 /* Duplicate the key and swap it with the value. */
5868 lua_pushvalue(L, -2);
5869 lua_insert(L, -2);
5870 /* stack: [ ... <headers:table>, <table>, k, k, v ] */
5871
5872 lua_newtable(L);
5873 lua_insert(L, -2);
5874 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, v ] */
5875
5876 if (lua_isstring(L, -1)) {
5877 /* push the value in the inner table */
5878 lua_rawseti(L, -2, 1);
5879 }
5880 else { /* table */
5881 lua_pushnil(L);
5882 while (lua_next(L, -2) != 0) {
5883 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2, v2 ] */
5884 if (!lua_isstring(L, -1)) {
5885 /* invalid value type, skip it*/
5886 lua_pop(L, 1);
5887 continue;
5888 }
5889 /* push the value in the inner table */
5890 lua_rawseti(L, -4, lua_rawlen(L, -4) + 1);
5891 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2 ] */
5892 }
5893 lua_pop(L, 1);
5894 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table> ] */
5895 }
5896
5897 /* push (k,v) on the stack in the headers table:
5898 * stack: [ ... <headers:table>, <table>, k, k, v ]
5899 */
5900 lua_settable(L, -5);
5901 /* stack: [ ... <headers:table>, <table>, k ] */
5902 }
5903 }
5904 lua_pop(L, 1);
5905 }
5906 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
5907 lua_settable(L, -3);
5908 /* stack: [ txn, <Arg:table>, <Reply:table> ] */
5909
5910 /* Pop a class sesison metatable and affect it to the userdata. */
5911 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_reply_ref);
5912 lua_setmetatable(L, -2);
5913 return 1;
5914}
5915
5916/* Set the reply status code, and optionally the reason. If no reason is
5917 * provided, the default one corresponding to the status code is used.
5918 */
5919__LJMP static int hlua_txn_reply_set_status(lua_State *L)
5920{
5921 int status = MAY_LJMP(luaL_checkinteger(L, 2));
5922 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
5923
5924 /* First argument (self) must be a table */
5925 luaL_checktype(L, 1, LUA_TTABLE);
5926
5927 if (status < 100 || status > 599) {
5928 lua_pushboolean(L, 0);
5929 return 1;
5930 }
5931 if (!reason)
5932 reason = http_get_reason(status);
5933
5934 lua_pushinteger(L, status);
5935 lua_setfield(L, 1, "status");
5936
5937 lua_pushstring(L, reason);
5938 lua_setfield(L, 1, "reason");
5939
5940 lua_pushboolean(L, 1);
5941 return 1;
5942}
5943
5944/* Add a header into the reply object. Each header name is associated to an
5945 * array of values in the "headers" table. If the header name is not found, a
5946 * new entry is created.
5947 */
5948__LJMP static int hlua_txn_reply_add_header(lua_State *L)
5949{
5950 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
5951 const char *value = MAY_LJMP(luaL_checkstring(L, 3));
5952 int ret;
5953
5954 /* First argument (self) must be a table */
5955 luaL_checktype(L, 1, LUA_TTABLE);
5956
5957 /* Push in the stack the "headers" entry. */
5958 ret = lua_getfield(L, 1, "headers");
5959 if (ret != LUA_TTABLE) {
5960 hlua_pusherror(L, "Reply['headers'] is expected to a an array. %s found", lua_typename(L, ret));
5961 WILL_LJMP(lua_error(L));
5962 }
5963
5964 /* check if the header is already registered. If not, register it. */
5965 ret = lua_getfield(L, -1, name);
5966 if (ret == LUA_TNIL) {
5967 /* Entry not found. */
5968 lua_pop(L, 1); /* remove the nil. The "headers" table is the top of the stack. */
5969
5970 /* Insert the new header name in the array in the top of the stack.
5971 * It left the new array in the top of the stack.
5972 */
5973 lua_newtable(L);
5974 lua_pushstring(L, name);
5975 lua_pushvalue(L, -2);
5976 lua_settable(L, -4);
5977 }
5978 else if (ret != LUA_TTABLE) {
5979 hlua_pusherror(L, "Reply['headers']['%s'] is expected to be an array. %s found", name, lua_typename(L, ret));
5980 WILL_LJMP(lua_error(L));
5981 }
5982
5983 /* Now the top od thestack is an array of values. We push
5984 * the header value as new entry.
5985 */
5986 lua_pushstring(L, value);
5987 ret = lua_rawlen(L, -2);
5988 lua_rawseti(L, -2, ret + 1);
5989
5990 lua_pushboolean(L, 1);
5991 return 1;
5992}
5993
5994/* Remove all occurrences of a given header name. */
5995__LJMP static int hlua_txn_reply_del_header(lua_State *L)
5996{
5997 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
5998 int ret;
5999
6000 /* First argument (self) must be a table */
6001 luaL_checktype(L, 1, LUA_TTABLE);
6002
6003 /* Push in the stack the "headers" entry. */
6004 ret = lua_getfield(L, 1, "headers");
6005 if (ret != LUA_TTABLE) {
6006 hlua_pusherror(L, "Reply['headers'] is expected to be an array. %s found", lua_typename(L, ret));
6007 WILL_LJMP(lua_error(L));
6008 }
6009
6010 lua_pushstring(L, name);
6011 lua_pushnil(L);
6012 lua_settable(L, -3);
6013
6014 lua_pushboolean(L, 1);
6015 return 1;
6016}
6017
6018/* Set the reply's body. Overwrite any existing entry. */
6019__LJMP static int hlua_txn_reply_set_body(lua_State *L)
6020{
6021 const char *payload = MAY_LJMP(luaL_checkstring(L, 2));
6022
6023 /* First argument (self) must be a table */
6024 luaL_checktype(L, 1, LUA_TTABLE);
6025
6026 lua_pushstring(L, payload);
6027 lua_setfield(L, 1, "body");
6028
6029 lua_pushboolean(L, 1);
6030 return 1;
6031}
6032
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01006033__LJMP static int hlua_log(lua_State *L)
6034{
6035 int level;
6036 const char *msg;
6037
6038 MAY_LJMP(check_args(L, 2, "log"));
6039 level = MAY_LJMP(luaL_checkinteger(L, 1));
6040 msg = MAY_LJMP(luaL_checkstring(L, 2));
6041
6042 if (level < 0 || level >= NB_LOG_LEVELS)
6043 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
6044
6045 hlua_sendlog(NULL, level, msg);
6046 return 0;
6047}
6048
6049__LJMP static int hlua_log_debug(lua_State *L)
6050{
6051 const char *msg;
6052
6053 MAY_LJMP(check_args(L, 1, "debug"));
6054 msg = MAY_LJMP(luaL_checkstring(L, 1));
6055 hlua_sendlog(NULL, LOG_DEBUG, msg);
6056 return 0;
6057}
6058
6059__LJMP static int hlua_log_info(lua_State *L)
6060{
6061 const char *msg;
6062
6063 MAY_LJMP(check_args(L, 1, "info"));
6064 msg = MAY_LJMP(luaL_checkstring(L, 1));
6065 hlua_sendlog(NULL, LOG_INFO, msg);
6066 return 0;
6067}
6068
6069__LJMP static int hlua_log_warning(lua_State *L)
6070{
6071 const char *msg;
6072
6073 MAY_LJMP(check_args(L, 1, "warning"));
6074 msg = MAY_LJMP(luaL_checkstring(L, 1));
6075 hlua_sendlog(NULL, LOG_WARNING, msg);
6076 return 0;
6077}
6078
6079__LJMP static int hlua_log_alert(lua_State *L)
6080{
6081 const char *msg;
6082
6083 MAY_LJMP(check_args(L, 1, "alert"));
6084 msg = MAY_LJMP(luaL_checkstring(L, 1));
6085 hlua_sendlog(NULL, LOG_ALERT, msg);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01006086 return 0;
6087}
6088
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006089__LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006090{
6091 int wakeup_ms = lua_tointeger(L, -1);
6092 if (now_ms < wakeup_ms)
Willy Tarreau9635e032018-10-16 17:52:55 +02006093 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006094 return 0;
6095}
6096
6097__LJMP static int hlua_sleep(lua_State *L)
6098{
6099 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006100 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006101
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006102 MAY_LJMP(check_args(L, 1, "sleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006103
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006104 delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006105 wakeup_ms = tick_add(now_ms, delay);
6106 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006107
Willy Tarreau9635e032018-10-16 17:52:55 +02006108 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006109 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006110}
6111
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006112__LJMP static int hlua_msleep(lua_State *L)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006113{
6114 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006115 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006116
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006117 MAY_LJMP(check_args(L, 1, "msleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006118
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006119 delay = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006120 wakeup_ms = tick_add(now_ms, delay);
6121 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006122
Willy Tarreau9635e032018-10-16 17:52:55 +02006123 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006124 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006125}
6126
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006127/* This functionis an LUA binding. it permits to give back
6128 * the hand at the HAProxy scheduler. It is used when the
6129 * LUA processing consumes a lot of time.
6130 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006131__LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006132{
6133 return 0;
6134}
6135
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006136__LJMP static int hlua_yield(lua_State *L)
6137{
Willy Tarreau9635e032018-10-16 17:52:55 +02006138 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006139 return 0;
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006140}
6141
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006142/* This function change the nice of the currently executed
6143 * task. It is used set low or high priority at the current
6144 * task.
6145 */
Willy Tarreau59551662015-03-10 14:23:13 +01006146__LJMP static int hlua_set_nice(lua_State *L)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006147{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006148 struct hlua *hlua;
6149 int nice;
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006150
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006151 MAY_LJMP(check_args(L, 1, "set_nice"));
6152 hlua = hlua_gethlua(L);
6153 nice = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006154
6155 /* If he task is not set, I'm in a start mode. */
6156 if (!hlua || !hlua->task)
6157 return 0;
6158
6159 if (nice < -1024)
6160 nice = -1024;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006161 else if (nice > 1024)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006162 nice = 1024;
6163
6164 hlua->task->nice = nice;
6165 return 0;
6166}
6167
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006168/* This function is used as a callback of a task. It is called by the
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006169 * HAProxy task subsystem when the task is awaked. The LUA runtime can
6170 * return an E_AGAIN signal, the emmiter of this signal must set a
6171 * signal to wake the task.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006172 *
6173 * Task wrapper are longjmp safe because the only one Lua code
6174 * executed is the safe hlua_ctx_resume();
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006175 */
Willy Tarreau60409db2019-08-21 14:14:50 +02006176struct task *hlua_process_task(struct task *task, void *context, unsigned short state)
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006177{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006178 struct hlua *hlua = context;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006179 enum hlua_exec status;
6180
Christopher Faulet5bc99722018-04-25 10:34:45 +02006181 if (task->thread_mask == MAX_THREADS_MASK)
6182 task_set_affinity(task, tid_bit);
6183
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006184 /* If it is the first call to the task, we must initialize the
6185 * execution timeouts.
6186 */
6187 if (!HLUA_IS_RUNNING(hlua))
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006188 hlua->max_time = hlua_timeout_task;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006189
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006190 /* Execute the Lua code. */
6191 status = hlua_ctx_resume(hlua, 1);
6192
6193 switch (status) {
6194 /* finished or yield */
6195 case HLUA_E_OK:
6196 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006197 task_destroy(task);
Tim Duesterhuscd235c62018-04-24 13:56:01 +02006198 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006199 break;
6200
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006201 case HLUA_E_AGAIN: /* co process or timeout wake me later. */
Thierry FOURNIERcb146882017-12-10 17:10:57 +01006202 notification_gc(&hlua->com);
PiBa-NLfe971b32018-05-02 22:27:14 +02006203 task->expire = hlua->wake_time;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006204 break;
6205
6206 /* finished with error. */
6207 case HLUA_E_ERRMSG:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006208 SEND_ERR(NULL, "Lua task: %s.\n", lua_tostring(hlua->T, -1));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006209 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006210 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006211 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006212 break;
6213
6214 case HLUA_E_ERR:
6215 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006216 SEND_ERR(NULL, "Lua task: unknown error.\n");
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006217 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006218 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006219 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006220 break;
6221 }
Emeric Brun253e53e2017-10-17 18:58:40 +02006222 return task;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006223}
6224
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006225/* This function is an LUA binding that register LUA function to be
6226 * executed after the HAProxy configuration parsing and before the
6227 * HAProxy scheduler starts. This function expect only one LUA
6228 * argument that is a function. This function returns nothing, but
6229 * throws if an error is encountered.
6230 */
6231__LJMP static int hlua_register_init(lua_State *L)
6232{
6233 struct hlua_init_function *init;
6234 int ref;
6235
6236 MAY_LJMP(check_args(L, 1, "register_init"));
6237
6238 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6239
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006240 init = calloc(1, sizeof(*init));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006241 if (!init)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006242 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006243
6244 init->function_ref = ref;
6245 LIST_ADDQ(&hlua_init_functions, &init->l);
6246 return 0;
6247}
6248
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006249/* This functio is an LUA binding. It permits to register a task
6250 * executed in parallel of the main HAroxy activity. The task is
6251 * created and it is set in the HAProxy scheduler. It can be called
6252 * from the "init" section, "post init" or during the runtime.
6253 *
6254 * Lua prototype:
6255 *
6256 * <none> core.register_task(<function>)
6257 */
6258static int hlua_register_task(lua_State *L)
6259{
6260 struct hlua *hlua;
6261 struct task *task;
6262 int ref;
6263
6264 MAY_LJMP(check_args(L, 1, "register_task"));
6265
6266 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6267
Willy Tarreaubafbe012017-11-24 17:34:44 +01006268 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006269 if (!hlua)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006270 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006271
Emeric Brunc60def82017-09-27 14:59:38 +02006272 task = task_new(MAX_THREADS_MASK);
Willy Tarreaue09101e2018-10-16 17:37:12 +02006273 if (!task)
6274 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
6275
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006276 task->context = hlua;
6277 task->process = hlua_process_task;
6278
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006279 if (!hlua_ctx_init(hlua, task, 1))
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006280 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006281
6282 /* Restore the function in the stack. */
6283 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref);
6284 hlua->nargs = 0;
6285
6286 /* Schedule task. */
6287 task_schedule(task, now_ms);
6288
6289 return 0;
6290}
6291
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006292/* Wrapper called by HAProxy to execute an LUA converter. This wrapper
6293 * doesn't allow "yield" functions because the HAProxy engine cannot
6294 * resume converters.
6295 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006296static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006297{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006298 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006299 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006300 const char *error;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006301
Willy Tarreaube508f12016-03-10 11:47:01 +01006302 if (!stream)
6303 return 0;
6304
Willy Tarreau87b09662015-04-03 00:22:06 +02006305 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006306 * Lua context can be not initialized. This behavior
6307 * permits to save performances because a systematic
6308 * Lua initialization cause 5% performances loss.
6309 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006310 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006311 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006312 if (!stream->hlua) {
6313 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6314 return 0;
6315 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006316 if (!hlua_ctx_init(stream->hlua, stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006317 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6318 return 0;
6319 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006320 }
6321
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006322 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006323 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006324
6325 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006326 if (!SET_SAFE_LJMP(stream->hlua->T)) {
6327 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6328 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006329 else
6330 error = "critical error";
6331 SEND_ERR(stream->be, "Lua converter '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006332 return 0;
6333 }
6334
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006335 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006336 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006337 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006338 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006339 return 0;
6340 }
6341
6342 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006343 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006344
6345 /* convert input sample and pust-it in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006346 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006347 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006348 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006349 return 0;
6350 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006351 hlua_smp2lua(stream->hlua->T, smp);
6352 stream->hlua->nargs = 1;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006353
6354 /* push keywords in the stack. */
6355 if (arg_p) {
6356 for (; arg_p->type != ARGT_STOP; arg_p++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006357 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006358 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006359 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006360 return 0;
6361 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006362 hlua_arg2lua(stream->hlua->T, arg_p);
6363 stream->hlua->nargs++;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006364 }
6365 }
6366
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006367 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006368 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006369
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006370 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006371 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006372 }
6373
6374 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006375 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006376 /* finished. */
6377 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006378 /* If the stack is empty, the function fails. */
6379 if (lua_gettop(stream->hlua->T) <= 0)
6380 return 0;
6381
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006382 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006383 hlua_lua2smp(stream->hlua->T, -1, smp);
6384 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006385 return 1;
6386
6387 /* yield. */
6388 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006389 SEND_ERR(stream->be, "Lua converter '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006390 return 0;
6391
6392 /* finished with error. */
6393 case HLUA_E_ERRMSG:
6394 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006395 SEND_ERR(stream->be, "Lua converter '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006396 fcn->name, lua_tostring(stream->hlua->T, -1));
6397 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006398 return 0;
6399
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006400 case HLUA_E_ETMOUT:
6401 SEND_ERR(stream->be, "Lua converter '%s': execution timeout.\n", fcn->name);
6402 return 0;
6403
6404 case HLUA_E_NOMEM:
6405 SEND_ERR(stream->be, "Lua converter '%s': out of memory error.\n", fcn->name);
6406 return 0;
6407
6408 case HLUA_E_YIELD:
6409 SEND_ERR(stream->be, "Lua converter '%s': yield functions like core.tcp() or core.sleep() are not allowed.\n", fcn->name);
6410 return 0;
6411
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006412 case HLUA_E_ERR:
6413 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006414 SEND_ERR(stream->be, "Lua converter '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006415 /* fall through */
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006416
6417 default:
6418 return 0;
6419 }
6420}
6421
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006422/* Wrapper called by HAProxy to execute a sample-fetch. this wrapper
6423 * doesn't allow "yield" functions because the HAProxy engine cannot
Willy Tarreaube508f12016-03-10 11:47:01 +01006424 * resume sample-fetches. This function will be called by the sample
6425 * fetch engine to call lua-based fetch operations.
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006426 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +02006427static int hlua_sample_fetch_wrapper(const struct arg *arg_p, struct sample *smp,
6428 const char *kw, void *private)
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006429{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006430 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006431 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006432 const char *error;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006433 unsigned int hflags = HLUA_TXN_NOTERM;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006434
Willy Tarreaube508f12016-03-10 11:47:01 +01006435 if (!stream)
6436 return 0;
Christopher Fauletafd8f102018-11-08 11:34:21 +01006437
Willy Tarreau87b09662015-04-03 00:22:06 +02006438 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006439 * Lua context can be not initialized. This behavior
6440 * permits to save performances because a systematic
6441 * Lua initialization cause 5% performances loss.
6442 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006443 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006444 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006445 if (!stream->hlua) {
6446 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6447 return 0;
6448 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006449 if (!hlua_ctx_init(stream->hlua, stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006450 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6451 return 0;
6452 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006453 }
6454
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006455 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006456 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006457
6458 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006459 if (!SET_SAFE_LJMP(stream->hlua->T)) {
6460 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6461 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006462 else
6463 error = "critical error";
6464 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006465 return 0;
6466 }
6467
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006468 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006469 if (!lua_checkstack(stream->hlua->T, 2)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006470 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006471 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006472 return 0;
6473 }
6474
6475 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006476 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006477
6478 /* push arguments in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006479 if (!hlua_txn_new(stream->hlua->T, stream, smp->px, smp->opt & SMP_OPT_DIR, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006480 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006481 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006482 return 0;
6483 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006484 stream->hlua->nargs = 1;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006485
6486 /* push keywords in the stack. */
6487 for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) {
6488 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006489 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006490 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006491 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006492 return 0;
6493 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006494 hlua_arg2lua(stream->hlua->T, arg_p);
6495 stream->hlua->nargs++;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006496 }
6497
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006498 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006499 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006500
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006501 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006502 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006503 }
6504
6505 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006506 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006507 /* finished. */
6508 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006509 /* If the stack is empty, the function fails. */
6510 if (lua_gettop(stream->hlua->T) <= 0)
6511 return 0;
6512
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006513 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006514 hlua_lua2smp(stream->hlua->T, -1, smp);
6515 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006516
6517 /* Set the end of execution flag. */
6518 smp->flags &= ~SMP_F_MAY_CHANGE;
6519 return 1;
6520
6521 /* yield. */
6522 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006523 SEND_ERR(smp->px, "Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006524 return 0;
6525
6526 /* finished with error. */
6527 case HLUA_E_ERRMSG:
6528 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006529 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006530 fcn->name, lua_tostring(stream->hlua->T, -1));
6531 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006532 return 0;
6533
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006534 case HLUA_E_ETMOUT:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006535 SEND_ERR(smp->px, "Lua sample-fetch '%s': execution timeout.\n", fcn->name);
6536 return 0;
6537
6538 case HLUA_E_NOMEM:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006539 SEND_ERR(smp->px, "Lua sample-fetch '%s': out of memory error.\n", fcn->name);
6540 return 0;
6541
6542 case HLUA_E_YIELD:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006543 SEND_ERR(smp->px, "Lua sample-fetch '%s': yield not allowed.\n", fcn->name);
6544 return 0;
6545
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006546 case HLUA_E_ERR:
6547 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006548 SEND_ERR(smp->px, "Lua sample-fetch '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006549 /* fall through */
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006550
6551 default:
6552 return 0;
6553 }
6554}
6555
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006556/* This function is an LUA binding used for registering
6557 * "sample-conv" functions. It expects a converter name used
6558 * in the haproxy configuration file, and an LUA function.
6559 */
6560__LJMP static int hlua_register_converters(lua_State *L)
6561{
6562 struct sample_conv_kw_list *sck;
6563 const char *name;
6564 int ref;
6565 int len;
6566 struct hlua_function *fcn;
6567
6568 MAY_LJMP(check_args(L, 2, "register_converters"));
6569
6570 /* First argument : converter name. */
6571 name = MAY_LJMP(luaL_checkstring(L, 1));
6572
6573 /* Second argument : lua function. */
6574 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6575
6576 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006577 sck = calloc(1, sizeof(*sck) + sizeof(struct sample_conv) * 2);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006578 if (!sck)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006579 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006580 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006581 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006582 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006583
6584 /* Fill fcn. */
6585 fcn->name = strdup(name);
6586 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006587 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006588 fcn->function_ref = ref;
6589
6590 /* List head */
6591 sck->list.n = sck->list.p = NULL;
6592
6593 /* converter keyword. */
6594 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006595 sck->kw[0].kw = calloc(1, len);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006596 if (!sck->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006597 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006598
6599 snprintf((char *)sck->kw[0].kw, len, "lua.%s", name);
6600 sck->kw[0].process = hlua_sample_conv_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006601 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 +01006602 sck->kw[0].val_args = NULL;
6603 sck->kw[0].in_type = SMP_T_STR;
6604 sck->kw[0].out_type = SMP_T_STR;
6605 sck->kw[0].private = fcn;
6606
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006607 /* Register this new converter */
6608 sample_register_convs(sck);
6609
6610 return 0;
6611}
6612
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006613/* This function is an LUA binding used for registering
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006614 * "sample-fetch" functions. It expects a converter name used
6615 * in the haproxy configuration file, and an LUA function.
6616 */
6617__LJMP static int hlua_register_fetches(lua_State *L)
6618{
6619 const char *name;
6620 int ref;
6621 int len;
6622 struct sample_fetch_kw_list *sfk;
6623 struct hlua_function *fcn;
6624
6625 MAY_LJMP(check_args(L, 2, "register_fetches"));
6626
6627 /* First argument : sample-fetch name. */
6628 name = MAY_LJMP(luaL_checkstring(L, 1));
6629
6630 /* Second argument : lua function. */
6631 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6632
6633 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006634 sfk = calloc(1, sizeof(*sfk) + sizeof(struct sample_fetch) * 2);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006635 if (!sfk)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006636 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006637 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006638 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006639 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006640
6641 /* Fill fcn. */
6642 fcn->name = strdup(name);
6643 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006644 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006645 fcn->function_ref = ref;
6646
6647 /* List head */
6648 sfk->list.n = sfk->list.p = NULL;
6649
6650 /* sample-fetch keyword. */
6651 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006652 sfk->kw[0].kw = calloc(1, len);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006653 if (!sfk->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006654 return luaL_error(L, "Lua out of memory error.");
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006655
6656 snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name);
6657 sfk->kw[0].process = hlua_sample_fetch_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006658 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 +01006659 sfk->kw[0].val_args = NULL;
6660 sfk->kw[0].out_type = SMP_T_STR;
6661 sfk->kw[0].use = SMP_USE_HTTP_ANY;
6662 sfk->kw[0].val = 0;
6663 sfk->kw[0].private = fcn;
6664
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006665 /* Register this new fetch. */
6666 sample_register_fetches(sfk);
6667
6668 return 0;
6669}
6670
Christopher Faulet501465d2020-02-26 14:54:16 +01006671/* This function is a lua binding to set the wake_time.
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006672 */
Christopher Faulet501465d2020-02-26 14:54:16 +01006673__LJMP static int hlua_set_wake_time(lua_State *L)
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006674{
6675 struct hlua *hlua = hlua_gethlua(L);
6676 unsigned int delay;
6677 unsigned int wakeup_ms;
6678
6679 MAY_LJMP(check_args(L, 1, "wake_time"));
6680
6681 delay = MAY_LJMP(luaL_checkinteger(L, 1));
6682 wakeup_ms = tick_add(now_ms, delay);
6683 hlua->wake_time = wakeup_ms;
6684 return 0;
6685}
6686
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006687/* This function is a wrapper to execute each LUA function declared as an action
6688 * wrapper during the initialisation period. This function may return any
6689 * ACT_RET_* value. On error ACT_RET_CONT is returned and the action is
6690 * ignored. If the lua action yields, ACT_RET_YIELD is returned. On success, the
6691 * return value is the first element on the stack.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006692 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006693static enum act_return hlua_action(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +02006694 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006695{
6696 char **arg;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006697 unsigned int hflags = 0;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006698 int dir, act_ret = ACT_RET_CONT;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006699 const char *error;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006700
6701 switch (rule->from) {
Christopher Fauletd8f0e072020-02-25 09:45:51 +01006702 case ACT_F_TCP_REQ_CNT: dir = SMP_OPT_DIR_REQ; break;
6703 case ACT_F_TCP_RES_CNT: dir = SMP_OPT_DIR_RES; break;
6704 case ACT_F_HTTP_REQ: dir = SMP_OPT_DIR_REQ; break;
6705 case ACT_F_HTTP_RES: dir = SMP_OPT_DIR_RES; break;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006706 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006707 SEND_ERR(px, "Lua: internal error while execute action.\n");
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006708 goto end;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006709 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006710
Willy Tarreau87b09662015-04-03 00:22:06 +02006711 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006712 * Lua context can be not initialized. This behavior
6713 * permits to save performances because a systematic
6714 * Lua initialization cause 5% performances loss.
6715 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006716 if (!s->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006717 s->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006718 if (!s->hlua) {
6719 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
6720 rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006721 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006722 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006723 if (!hlua_ctx_init(s->hlua, s->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006724 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
6725 rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006726 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006727 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006728 }
6729
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006730 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006731 if (!HLUA_IS_RUNNING(s->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006732
6733 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006734 if (!SET_SAFE_LJMP(s->hlua->T)) {
6735 if (lua_type(s->hlua->T, -1) == LUA_TSTRING)
6736 error = lua_tostring(s->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006737 else
6738 error = "critical error";
6739 SEND_ERR(px, "Lua function '%s': %s.\n",
6740 rule->arg.hlua_rule->fcn.name, error);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006741 goto end;
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006742 }
6743
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006744 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006745 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006746 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006747 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006748 RESET_SAFE_LJMP(s->hlua->T);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006749 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006750 }
6751
6752 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006753 lua_rawgeti(s->hlua->T, LUA_REGISTRYINDEX, rule->arg.hlua_rule->fcn.function_ref);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006754
Willy Tarreau87b09662015-04-03 00:22:06 +02006755 /* Create and and push object stream in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006756 if (!hlua_txn_new(s->hlua->T, s, px, dir, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006757 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006758 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006759 RESET_SAFE_LJMP(s->hlua->T);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006760 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006761 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006762 s->hlua->nargs = 1;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006763
6764 /* push keywords in the stack. */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006765 for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006766 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006767 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006768 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006769 RESET_SAFE_LJMP(s->hlua->T);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006770 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006771 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006772 lua_pushstring(s->hlua->T, *arg);
6773 s->hlua->nargs++;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006774 }
6775
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006776 /* Now the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006777 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006778
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006779 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006780 s->hlua->max_time = hlua_timeout_session;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006781 }
6782
6783 /* Execute the function. */
Christopher Faulet105ba6c2019-12-18 14:41:51 +01006784 switch (hlua_ctx_resume(s->hlua, !(flags & ACT_OPT_FINAL))) {
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006785 /* finished. */
6786 case HLUA_E_OK:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006787 /* Catch the return value */
6788 if (lua_gettop(s->hlua->T) > 0)
6789 act_ret = lua_tointeger(s->hlua->T, -1);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006790
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006791 /* Set timeout in the required channel. */
Christopher Faulet498c4832020-07-28 11:59:58 +02006792 if (act_ret == ACT_RET_YIELD) {
6793 if (flags & ACT_OPT_FINAL)
6794 goto err_yield;
6795
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006796 if (dir == SMP_OPT_DIR_REQ)
6797 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
6798 s->hlua->wake_time);
6799 else
6800 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
6801 s->hlua->wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006802 }
6803 goto end;
6804
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006805 /* yield. */
6806 case HLUA_E_AGAIN:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006807 /* Set timeout in the required channel. */
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006808 if (dir == SMP_OPT_DIR_REQ)
6809 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
6810 s->hlua->wake_time);
6811 else
6812 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
6813 s->hlua->wake_time);
6814
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006815 /* Some actions can be wake up when a "write" event
6816 * is detected on a response channel. This is useful
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006817 * only for actions targeted on the requests.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006818 */
Christopher Faulet51fa3582019-07-26 14:54:52 +02006819 if (HLUA_IS_WAKERESWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01006820 s->res.flags |= CF_WAKE_WRITE;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006821 if (HLUA_IS_WAKEREQWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01006822 s->req.flags |= CF_WAKE_WRITE;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006823 act_ret = ACT_RET_YIELD;
6824 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006825
6826 /* finished with error. */
6827 case HLUA_E_ERRMSG:
6828 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006829 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006830 rule->arg.hlua_rule->fcn.name, lua_tostring(s->hlua->T, -1));
6831 lua_pop(s->hlua->T, 1);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006832 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006833
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006834 case HLUA_E_ETMOUT:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006835 SEND_ERR(px, "Lua function '%s': execution timeout.\n", rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006836 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006837
6838 case HLUA_E_NOMEM:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006839 SEND_ERR(px, "Lua function '%s': out of memory error.\n", rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006840 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006841
6842 case HLUA_E_YIELD:
Christopher Faulet498c4832020-07-28 11:59:58 +02006843 err_yield:
6844 act_ret = ACT_RET_CONT;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006845 SEND_ERR(px, "Lua function '%s': aborting Lua processing on expired timeout.\n",
6846 rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006847 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006848
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006849 case HLUA_E_ERR:
6850 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006851 SEND_ERR(px, "Lua function '%s' return an unknown error.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006852 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006853
6854 default:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006855 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006856 }
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006857
6858 end:
Christopher Faulet2361fd92020-07-30 10:40:58 +02006859 if (act_ret != ACT_RET_YIELD && s->hlua)
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006860 s->hlua->wake_time = TICK_ETERNITY;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006861 return act_ret;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006862}
6863
Olivier Houchard9f6af332018-05-25 14:04:04 +02006864struct task *hlua_applet_wakeup(struct task *t, void *context, unsigned short state)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006865{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006866 struct appctx *ctx = context;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006867
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006868 appctx_wakeup(ctx);
Willy Tarreaud9587412017-08-23 16:07:33 +02006869 t->expire = TICK_ETERNITY;
Willy Tarreaud1aa41f2017-07-21 16:41:56 +02006870 return t;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006871}
6872
6873static int hlua_applet_tcp_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
6874{
6875 struct stream_interface *si = ctx->owner;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006876 struct hlua *hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006877 struct task *task;
6878 char **arg;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006879 const char *error;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006880
Willy Tarreaubafbe012017-11-24 17:34:44 +01006881 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006882 if (!hlua) {
6883 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
6884 ctx->rule->arg.hlua_rule->fcn.name);
6885 return 0;
6886 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006887 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006888 ctx->ctx.hlua_apptcp.hlua = hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006889 ctx->ctx.hlua_apptcp.flags = 0;
6890
6891 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01006892 task = task_new(tid_bit);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006893 if (!task) {
6894 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
6895 ctx->rule->arg.hlua_rule->fcn.name);
6896 return 0;
6897 }
6898 task->nice = 0;
6899 task->context = ctx;
6900 task->process = hlua_applet_wakeup;
6901 ctx->ctx.hlua_apptcp.task = task;
6902
6903 /* In the execution wrappers linked with a stream, the
6904 * Lua context can be not initialized. This behavior
6905 * permits to save performances because a systematic
6906 * Lua initialization cause 5% performances loss.
6907 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006908 if (!hlua_ctx_init(hlua, task, 0)) {
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006909 SEND_ERR(px, "Lua applet tcp '%s': can't initialize Lua context.\n",
6910 ctx->rule->arg.hlua_rule->fcn.name);
6911 return 0;
6912 }
6913
6914 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006915 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006916
6917 /* The following Lua calls can fail. */
6918 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01006919 if (lua_type(hlua->T, -1) == LUA_TSTRING)
6920 error = lua_tostring(hlua->T, -1);
6921 else
6922 error = "critical error";
6923 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
6924 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006925 return 0;
6926 }
6927
6928 /* Check stack available size. */
6929 if (!lua_checkstack(hlua->T, 1)) {
6930 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6931 ctx->rule->arg.hlua_rule->fcn.name);
6932 RESET_SAFE_LJMP(hlua->T);
6933 return 0;
6934 }
6935
6936 /* Restore the function in the stack. */
6937 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
6938
6939 /* Create and and push object stream in the stack. */
6940 if (!hlua_applet_tcp_new(hlua->T, ctx)) {
6941 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6942 ctx->rule->arg.hlua_rule->fcn.name);
6943 RESET_SAFE_LJMP(hlua->T);
6944 return 0;
6945 }
6946 hlua->nargs = 1;
6947
6948 /* push keywords in the stack. */
6949 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
6950 if (!lua_checkstack(hlua->T, 1)) {
6951 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6952 ctx->rule->arg.hlua_rule->fcn.name);
6953 RESET_SAFE_LJMP(hlua->T);
6954 return 0;
6955 }
6956 lua_pushstring(hlua->T, *arg);
6957 hlua->nargs++;
6958 }
6959
6960 RESET_SAFE_LJMP(hlua->T);
6961
6962 /* Wakeup the applet ASAP. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01006963 si_cant_get(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01006964 si_rx_endp_more(si);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006965
6966 return 1;
6967}
6968
Willy Tarreau60409db2019-08-21 14:14:50 +02006969void hlua_applet_tcp_fct(struct appctx *ctx)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006970{
6971 struct stream_interface *si = ctx->owner;
6972 struct stream *strm = si_strm(si);
6973 struct channel *res = si_ic(si);
6974 struct act_rule *rule = ctx->rule;
6975 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006976 struct hlua *hlua = ctx->ctx.hlua_apptcp.hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006977
6978 /* The applet execution is already done. */
Olivier Houchard594c8c52018-08-28 14:41:31 +02006979 if (ctx->ctx.hlua_apptcp.flags & APPLET_DONE) {
6980 /* eat the whole request */
6981 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006982 return;
Olivier Houchard594c8c52018-08-28 14:41:31 +02006983 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006984
6985 /* If the stream is disconnect or closed, ldo nothing. */
6986 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
6987 return;
6988
6989 /* Execute the function. */
6990 switch (hlua_ctx_resume(hlua, 1)) {
6991 /* finished. */
6992 case HLUA_E_OK:
6993 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
6994
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006995 /* eat the whole request */
Willy Tarreaua79021a2018-06-15 18:07:57 +02006996 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006997 res->flags |= CF_READ_NULL;
6998 si_shutr(si);
6999 return;
7000
7001 /* yield. */
7002 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01007003 if (hlua->wake_time != TICK_ETERNITY)
7004 task_schedule(ctx->ctx.hlua_apptcp.task, hlua->wake_time);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007005 return;
7006
7007 /* finished with error. */
7008 case HLUA_E_ERRMSG:
7009 /* Display log. */
7010 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
7011 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7012 lua_pop(hlua->T, 1);
7013 goto error;
7014
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007015 case HLUA_E_ETMOUT:
7016 SEND_ERR(px, "Lua applet tcp '%s': execution timeout.\n",
7017 rule->arg.hlua_rule->fcn.name);
7018 goto error;
7019
7020 case HLUA_E_NOMEM:
7021 SEND_ERR(px, "Lua applet tcp '%s': out of memory error.\n",
7022 rule->arg.hlua_rule->fcn.name);
7023 goto error;
7024
7025 case HLUA_E_YIELD: /* unexpected */
7026 SEND_ERR(px, "Lua applet tcp '%s': yield not allowed.\n",
7027 rule->arg.hlua_rule->fcn.name);
7028 goto error;
7029
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007030 case HLUA_E_ERR:
7031 /* Display log. */
7032 SEND_ERR(px, "Lua applet tcp '%s' return an unknown error.\n",
7033 rule->arg.hlua_rule->fcn.name);
7034 goto error;
7035
7036 default:
7037 goto error;
7038 }
7039
7040error:
7041
7042 /* For all other cases, just close the stream. */
7043 si_shutw(si);
7044 si_shutr(si);
7045 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7046}
7047
7048static void hlua_applet_tcp_release(struct appctx *ctx)
7049{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007050 task_destroy(ctx->ctx.hlua_apptcp.task);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007051 ctx->ctx.hlua_apptcp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007052 hlua_ctx_destroy(ctx->ctx.hlua_apptcp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007053 ctx->ctx.hlua_apptcp.hlua = NULL;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007054}
7055
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007056/* The function returns 1 if the initialisation is complete, 0 if
7057 * an errors occurs and -1 if more data are required for initializing
7058 * the applet.
7059 */
7060static int hlua_applet_http_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7061{
7062 struct stream_interface *si = ctx->owner;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007063 struct http_txn *txn;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007064 struct hlua *hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007065 char **arg;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007066 struct task *task;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007067 const char *error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007068
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007069 txn = strm->txn;
Willy Tarreaubafbe012017-11-24 17:34:44 +01007070 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007071 if (!hlua) {
7072 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
7073 ctx->rule->arg.hlua_rule->fcn.name);
7074 return 0;
7075 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007076 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007077 ctx->ctx.hlua_apphttp.hlua = hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007078 ctx->ctx.hlua_apphttp.left_bytes = -1;
7079 ctx->ctx.hlua_apphttp.flags = 0;
7080
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01007081 if (txn->req.flags & HTTP_MSGF_VER_11)
7082 ctx->ctx.hlua_apphttp.flags |= APPLET_HTTP11;
7083
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007084 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007085 task = task_new(tid_bit);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007086 if (!task) {
7087 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
7088 ctx->rule->arg.hlua_rule->fcn.name);
7089 return 0;
7090 }
7091 task->nice = 0;
7092 task->context = ctx;
7093 task->process = hlua_applet_wakeup;
7094 ctx->ctx.hlua_apphttp.task = task;
7095
7096 /* In the execution wrappers linked with a stream, the
7097 * Lua context can be not initialized. This behavior
7098 * permits to save performances because a systematic
7099 * Lua initialization cause 5% performances loss.
7100 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01007101 if (!hlua_ctx_init(hlua, task, 0)) {
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007102 SEND_ERR(px, "Lua applet http '%s': can't initialize Lua context.\n",
7103 ctx->rule->arg.hlua_rule->fcn.name);
7104 return 0;
7105 }
7106
7107 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007108 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007109
7110 /* The following Lua calls can fail. */
7111 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007112 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7113 error = lua_tostring(hlua->T, -1);
7114 else
7115 error = "critical error";
7116 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7117 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007118 return 0;
7119 }
7120
7121 /* Check stack available size. */
7122 if (!lua_checkstack(hlua->T, 1)) {
7123 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7124 ctx->rule->arg.hlua_rule->fcn.name);
7125 RESET_SAFE_LJMP(hlua->T);
7126 return 0;
7127 }
7128
7129 /* Restore the function in the stack. */
7130 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
7131
7132 /* Create and and push object stream in the stack. */
7133 if (!hlua_applet_http_new(hlua->T, ctx)) {
7134 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7135 ctx->rule->arg.hlua_rule->fcn.name);
7136 RESET_SAFE_LJMP(hlua->T);
7137 return 0;
7138 }
7139 hlua->nargs = 1;
7140
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007141 /* push keywords in the stack. */
7142 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7143 if (!lua_checkstack(hlua->T, 1)) {
7144 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7145 ctx->rule->arg.hlua_rule->fcn.name);
7146 RESET_SAFE_LJMP(hlua->T);
7147 return 0;
7148 }
7149 lua_pushstring(hlua->T, *arg);
7150 hlua->nargs++;
7151 }
7152
7153 RESET_SAFE_LJMP(hlua->T);
7154
7155 /* Wakeup the applet when data is ready for read. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007156 si_cant_get(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007157
7158 return 1;
7159}
7160
Willy Tarreau60409db2019-08-21 14:14:50 +02007161void hlua_applet_http_fct(struct appctx *ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007162{
7163 struct stream_interface *si = ctx->owner;
7164 struct stream *strm = si_strm(si);
7165 struct channel *req = si_oc(si);
7166 struct channel *res = si_ic(si);
7167 struct act_rule *rule = ctx->rule;
7168 struct proxy *px = strm->be;
7169 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
7170 struct htx *req_htx, *res_htx;
7171
7172 res_htx = htx_from_buf(&res->buf);
7173
7174 /* If the stream is disconnect or closed, ldo nothing. */
7175 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7176 goto out;
7177
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007178 /* Check if the input buffer is available. */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007179 if (!b_size(&res->buf)) {
7180 si_rx_room_blk(si);
7181 goto out;
7182 }
7183 /* check that the output is not closed */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007184 if (res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_SHUTR))
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007185 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7186
7187 /* Set the currently running flag. */
7188 if (!HLUA_IS_RUNNING(hlua) &&
7189 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7190 struct htx_blk *blk;
7191 size_t count = co_data(req);
7192
7193 if (!count) {
7194 si_cant_get(si);
7195 goto out;
7196 }
7197
7198 /* We need to flush the request header. This left the body for
7199 * the Lua.
7200 */
7201 req_htx = htx_from_buf(&req->buf);
Christopher Fauleta3f15502019-05-13 15:27:23 +02007202 blk = htx_get_first_blk(req_htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007203 while (count && blk) {
7204 enum htx_blk_type type = htx_get_blk_type(blk);
7205 uint32_t sz = htx_get_blksz(blk);
7206
7207 if (sz > count) {
7208 si_cant_get(si);
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007209 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007210 goto out;
7211 }
7212
7213 count -= sz;
7214 co_set_data(req, co_data(req) - sz);
7215 blk = htx_remove_blk(req_htx, blk);
7216
7217 if (type == HTX_BLK_EOH)
7218 break;
7219 }
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007220 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007221 }
7222
7223 /* Executes The applet if it is not done. */
7224 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7225
7226 /* Execute the function. */
7227 switch (hlua_ctx_resume(hlua, 1)) {
7228 /* finished. */
7229 case HLUA_E_OK:
7230 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7231 break;
7232
7233 /* yield. */
7234 case HLUA_E_AGAIN:
7235 if (hlua->wake_time != TICK_ETERNITY)
7236 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007237 goto out;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007238
7239 /* finished with error. */
7240 case HLUA_E_ERRMSG:
7241 /* Display log. */
7242 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7243 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7244 lua_pop(hlua->T, 1);
7245 goto error;
7246
7247 case HLUA_E_ETMOUT:
7248 SEND_ERR(px, "Lua applet http '%s': execution timeout.\n",
7249 rule->arg.hlua_rule->fcn.name);
7250 goto error;
7251
7252 case HLUA_E_NOMEM:
7253 SEND_ERR(px, "Lua applet http '%s': out of memory error.\n",
7254 rule->arg.hlua_rule->fcn.name);
7255 goto error;
7256
7257 case HLUA_E_YIELD: /* unexpected */
7258 SEND_ERR(px, "Lua applet http '%s': yield not allowed.\n",
7259 rule->arg.hlua_rule->fcn.name);
7260 goto error;
7261
7262 case HLUA_E_ERR:
7263 /* Display log. */
7264 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\n",
7265 rule->arg.hlua_rule->fcn.name);
7266 goto error;
7267
7268 default:
7269 goto error;
7270 }
7271 }
7272
7273 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007274 if (ctx->ctx.hlua_apphttp.flags & APPLET_RSP_SENT)
7275 goto done;
7276
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007277 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT))
7278 goto error;
7279
Christopher Faulet54b5e212019-06-04 10:08:28 +02007280 /* Don't add TLR because mux-h1 will take care of it */
Willy Tarreauf1ea47d2020-07-23 06:53:27 +02007281 res_htx->flags |= HTX_FL_EOI; /* no more data are expected. Only EOM remains to add now */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007282 if (!htx_add_endof(res_htx, HTX_BLK_EOM)) {
7283 si_rx_room_blk(si);
7284 goto out;
7285 }
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007286 channel_add_input(res, 1);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007287 strm->txn->status = ctx->ctx.hlua_apphttp.status;
7288 ctx->ctx.hlua_apphttp.flags |= APPLET_RSP_SENT;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007289 }
7290
7291 done:
7292 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007293 if (!(res->flags & CF_SHUTR)) {
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007294 res->flags |= CF_READ_NULL;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007295 si_shutr(si);
7296 }
7297
7298 /* eat the whole request */
7299 if (co_data(req)) {
7300 req_htx = htx_from_buf(&req->buf);
7301 co_htx_skip(req, req_htx, co_data(req));
7302 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007303 }
7304 }
7305
7306 out:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007307 htx_to_buf(res_htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007308 return;
7309
7310 error:
7311
7312 /* If we are in HTTP mode, and we are not send any
7313 * data, return a 500 server error in best effort:
7314 * if there is no room available in the buffer,
7315 * just close the connection.
7316 */
7317 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
Christopher Fauletf7346382019-07-17 22:02:08 +02007318 struct buffer *err = &http_err_chunks[HTTP_ERR_500];
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007319
7320 channel_erase(res);
7321 res->buf.data = b_data(err);
7322 memcpy(res->buf.area, b_head(err), b_data(err));
7323 res_htx = htx_from_buf(&res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007324 channel_add_input(res, res_htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007325 }
7326 if (!(strm->flags & SF_ERR_MASK))
7327 strm->flags |= SF_ERR_RESOURCE;
7328 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7329 goto done;
7330}
7331
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007332static void hlua_applet_http_release(struct appctx *ctx)
7333{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007334 task_destroy(ctx->ctx.hlua_apphttp.task);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007335 ctx->ctx.hlua_apphttp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007336 hlua_ctx_destroy(ctx->ctx.hlua_apphttp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007337 ctx->ctx.hlua_apphttp.hlua = NULL;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007338}
7339
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007340/* global {tcp|http}-request parser. Return ACT_RET_PRS_OK in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007341 * success case, else return ACT_RET_PRS_ERR.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007342 *
7343 * This function can fail with an abort() due to an Lua critical error.
7344 * We are in the configuration parsing process of HAProxy, this abort() is
7345 * tolerated.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007346 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007347static enum act_parse_ret action_register_lua(const char **args, int *cur_arg, struct proxy *px,
7348 struct act_rule *rule, char **err)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007349{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007350 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007351 int i;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007352
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007353 /* Memory for the rule. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007354 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007355 if (!rule->arg.hlua_rule) {
7356 memprintf(err, "out of memory error");
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007357 return ACT_RET_PRS_ERR;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007358 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007359
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007360 /* Memory for arguments. */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02007361 rule->arg.hlua_rule->args = calloc(fcn->nargs + 1,
7362 sizeof(*rule->arg.hlua_rule->args));
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007363 if (!rule->arg.hlua_rule->args) {
7364 memprintf(err, "out of memory error");
7365 return ACT_RET_PRS_ERR;
7366 }
7367
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007368 /* Reference the Lua function and store the reference. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007369 rule->arg.hlua_rule->fcn = *fcn;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007370
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007371 /* Expect some arguments */
7372 for (i = 0; i < fcn->nargs; i++) {
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007373 if (*args[*cur_arg] == '\0') {
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007374 memprintf(err, "expect %d arguments", fcn->nargs);
7375 return ACT_RET_PRS_ERR;
7376 }
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007377 rule->arg.hlua_rule->args[i] = strdup(args[*cur_arg]);
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007378 if (!rule->arg.hlua_rule->args[i]) {
7379 memprintf(err, "out of memory error");
7380 return ACT_RET_PRS_ERR;
7381 }
7382 (*cur_arg)++;
7383 }
7384 rule->arg.hlua_rule->args[i] = NULL;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007385
Thierry FOURNIER42148732015-09-02 17:17:33 +02007386 rule->action = ACT_CUSTOM;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007387 rule->action_ptr = hlua_action;
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007388 return ACT_RET_PRS_OK;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007389}
7390
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007391static enum act_parse_ret action_register_service_http(const char **args, int *cur_arg, struct proxy *px,
7392 struct act_rule *rule, char **err)
7393{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007394 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007395
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007396 /* HTTP applets are forbidden in tcp-request rules.
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007397 * HTTP applet request requires everything initialized by
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007398 * "http_process_request" (analyzer flag AN_REQ_HTTP_INNER).
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007399 * The applet will be immediately initialized, but its before
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007400 * the call of this analyzer.
7401 */
7402 if (rule->from != ACT_F_HTTP_REQ) {
7403 memprintf(err, "HTTP applets are forbidden from 'tcp-request' rulesets");
7404 return ACT_RET_PRS_ERR;
7405 }
7406
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007407 /* Memory for the rule. */
7408 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7409 if (!rule->arg.hlua_rule) {
7410 memprintf(err, "out of memory error");
7411 return ACT_RET_PRS_ERR;
7412 }
7413
7414 /* Reference the Lua function and store the reference. */
7415 rule->arg.hlua_rule->fcn = *fcn;
7416
7417 /* TODO: later accept arguments. */
7418 rule->arg.hlua_rule->args = NULL;
7419
7420 /* Add applet pointer in the rule. */
7421 rule->applet.obj_type = OBJ_TYPE_APPLET;
7422 rule->applet.name = fcn->name;
7423 rule->applet.init = hlua_applet_http_init;
7424 rule->applet.fct = hlua_applet_http_fct;
7425 rule->applet.release = hlua_applet_http_release;
7426 rule->applet.timeout = hlua_timeout_applet;
7427
7428 return ACT_RET_PRS_OK;
7429}
7430
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007431/* This function is an LUA binding used for registering
7432 * "sample-conv" functions. It expects a converter name used
7433 * in the haproxy configuration file, and an LUA function.
7434 */
7435__LJMP static int hlua_register_action(lua_State *L)
7436{
7437 struct action_kw_list *akl;
7438 const char *name;
7439 int ref;
7440 int len;
7441 struct hlua_function *fcn;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007442 int nargs;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007443
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007444 /* Initialise the number of expected arguments at 0. */
7445 nargs = 0;
7446
7447 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
7448 WILL_LJMP(luaL_error(L, "'register_action' needs between 3 and 4 arguments"));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007449
7450 /* First argument : converter name. */
7451 name = MAY_LJMP(luaL_checkstring(L, 1));
7452
7453 /* Second argument : environment. */
7454 if (lua_type(L, 2) != LUA_TTABLE)
7455 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7456
7457 /* Third argument : lua function. */
7458 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7459
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007460 /* Fourth argument : number of mandatory arguments expected on the configuration line. */
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007461 if (lua_gettop(L) >= 4)
7462 nargs = MAY_LJMP(luaL_checkinteger(L, 4));
7463
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007464 /* browse the second argument as an array. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007465 lua_pushnil(L);
7466 while (lua_next(L, 2) != 0) {
7467 if (lua_type(L, -1) != LUA_TSTRING)
7468 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7469
7470 /* Check required environment. Only accepted "http" or "tcp". */
7471 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007472 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007473 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007474 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007475 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007476 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007477 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007478
7479 /* Fill fcn. */
7480 fcn->name = strdup(name);
7481 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007482 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007483 fcn->function_ref = ref;
7484
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007485 /* Set the expected number od arguments. */
7486 fcn->nargs = nargs;
7487
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007488 /* List head */
7489 akl->list.n = akl->list.p = NULL;
7490
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007491 /* action keyword. */
7492 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007493 akl->kw[0].kw = calloc(1, len);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007494 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007495 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007496
7497 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7498
7499 akl->kw[0].match_pfx = 0;
7500 akl->kw[0].private = fcn;
7501 akl->kw[0].parse = action_register_lua;
7502
7503 /* select the action registering point. */
7504 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0)
7505 tcp_req_cont_keywords_register(akl);
7506 else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0)
7507 tcp_res_cont_keywords_register(akl);
7508 else if (strcmp(lua_tostring(L, -1), "http-req") == 0)
7509 http_req_keywords_register(akl);
7510 else if (strcmp(lua_tostring(L, -1), "http-res") == 0)
7511 http_res_keywords_register(akl);
7512 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007513 WILL_LJMP(luaL_error(L, "Lua action environment '%s' is unknown. "
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007514 "'tcp-req', 'tcp-res', 'http-req' or 'http-res' "
7515 "are expected.", lua_tostring(L, -1)));
7516
7517 /* pop the environment string. */
7518 lua_pop(L, 1);
7519 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007520 return ACT_RET_PRS_OK;
7521}
7522
7523static enum act_parse_ret action_register_service_tcp(const char **args, int *cur_arg, struct proxy *px,
7524 struct act_rule *rule, char **err)
7525{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007526 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007527
Christopher Faulet280f85b2019-07-15 15:02:04 +02007528 if (px->mode == PR_MODE_HTTP) {
7529 memprintf(err, "Lua TCP services cannot be used on HTTP proxies");
Christopher Fauletafd8f102018-11-08 11:34:21 +01007530 return ACT_RET_PRS_ERR;
7531 }
7532
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007533 /* Memory for the rule. */
7534 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7535 if (!rule->arg.hlua_rule) {
7536 memprintf(err, "out of memory error");
7537 return ACT_RET_PRS_ERR;
7538 }
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007539
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007540 /* Reference the Lua function and store the reference. */
7541 rule->arg.hlua_rule->fcn = *fcn;
7542
7543 /* TODO: later accept arguments. */
7544 rule->arg.hlua_rule->args = NULL;
7545
7546 /* Add applet pointer in the rule. */
7547 rule->applet.obj_type = OBJ_TYPE_APPLET;
7548 rule->applet.name = fcn->name;
7549 rule->applet.init = hlua_applet_tcp_init;
7550 rule->applet.fct = hlua_applet_tcp_fct;
7551 rule->applet.release = hlua_applet_tcp_release;
7552 rule->applet.timeout = hlua_timeout_applet;
7553
7554 return 0;
7555}
7556
7557/* This function is an LUA binding used for registering
7558 * "sample-conv" functions. It expects a converter name used
7559 * in the haproxy configuration file, and an LUA function.
7560 */
7561__LJMP static int hlua_register_service(lua_State *L)
7562{
7563 struct action_kw_list *akl;
7564 const char *name;
7565 const char *env;
7566 int ref;
7567 int len;
7568 struct hlua_function *fcn;
7569
7570 MAY_LJMP(check_args(L, 3, "register_service"));
7571
7572 /* First argument : converter name. */
7573 name = MAY_LJMP(luaL_checkstring(L, 1));
7574
7575 /* Second argument : environment. */
7576 env = MAY_LJMP(luaL_checkstring(L, 2));
7577
7578 /* Third argument : lua function. */
7579 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7580
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007581 /* Allocate and fill the sample fetch keyword struct. */
7582 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
7583 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007584 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007585 fcn = calloc(1, sizeof(*fcn));
7586 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007587 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007588
7589 /* Fill fcn. */
7590 len = strlen("<lua.>") + strlen(name) + 1;
7591 fcn->name = calloc(1, len);
7592 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007593 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007594 snprintf((char *)fcn->name, len, "<lua.%s>", name);
7595 fcn->function_ref = ref;
7596
7597 /* List head */
7598 akl->list.n = akl->list.p = NULL;
7599
7600 /* converter keyword. */
7601 len = strlen("lua.") + strlen(name) + 1;
7602 akl->kw[0].kw = calloc(1, len);
7603 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007604 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007605
7606 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7607
Thierry FOURNIER / OZON.IO02564fd2016-11-12 11:07:05 +01007608 /* Check required environment. Only accepted "http" or "tcp". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007609 if (strcmp(env, "tcp") == 0)
7610 akl->kw[0].parse = action_register_service_tcp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007611 else if (strcmp(env, "http") == 0)
7612 akl->kw[0].parse = action_register_service_http;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007613 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007614 WILL_LJMP(luaL_error(L, "Lua service environment '%s' is unknown. "
Eric Salamafe7456f2017-12-21 14:30:07 +01007615 "'tcp' or 'http' are expected.", env));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007616
7617 akl->kw[0].match_pfx = 0;
7618 akl->kw[0].private = fcn;
7619
7620 /* End of array. */
7621 memset(&akl->kw[1], 0, sizeof(*akl->kw));
7622
7623 /* Register this new converter */
7624 service_keywords_register(akl);
7625
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007626 return 0;
7627}
7628
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007629/* This function initialises Lua cli handler. It copies the
7630 * arguments in the Lua stack and create channel IO objects.
7631 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02007632static int hlua_cli_parse_fct(char **args, char *payload, struct appctx *appctx, void *private)
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007633{
7634 struct hlua *hlua;
7635 struct hlua_function *fcn;
7636 int i;
7637 const char *error;
7638
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007639 fcn = private;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007640 appctx->ctx.hlua_cli.fcn = private;
7641
Willy Tarreaubafbe012017-11-24 17:34:44 +01007642 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007643 if (!hlua) {
7644 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007645 return 1;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007646 }
7647 HLUA_INIT(hlua);
7648 appctx->ctx.hlua_cli.hlua = hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007649
7650 /* Create task used by signal to wakeup applets.
Ilya Shipitsind4259502020-04-08 01:07:56 +05007651 * We use the same wakeup function than the Lua applet_tcp and
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007652 * applet_http. It is absolutely compatible.
7653 */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007654 appctx->ctx.hlua_cli.task = task_new(tid_bit);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007655 if (!appctx->ctx.hlua_cli.task) {
Thierry FOURNIERffbf5692016-12-16 11:14:06 +01007656 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007657 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007658 }
7659 appctx->ctx.hlua_cli.task->nice = 0;
7660 appctx->ctx.hlua_cli.task->context = appctx;
7661 appctx->ctx.hlua_cli.task->process = hlua_applet_wakeup;
7662
7663 /* Initialises the Lua context */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01007664 if (!hlua_ctx_init(hlua, appctx->ctx.hlua_cli.task, 0)) {
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007665 SEND_ERR(NULL, "Lua cli '%s': can't initialize Lua context.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007666 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007667 }
7668
7669 /* The following Lua calls can fail. */
7670 if (!SET_SAFE_LJMP(hlua->T)) {
7671 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7672 error = lua_tostring(hlua->T, -1);
7673 else
7674 error = "critical error";
7675 SEND_ERR(NULL, "Lua cli '%s': %s.\n", fcn->name, error);
7676 goto error;
7677 }
7678
7679 /* Check stack available size. */
7680 if (!lua_checkstack(hlua->T, 2)) {
7681 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7682 goto error;
7683 }
7684
7685 /* Restore the function in the stack. */
7686 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
7687
7688 /* Once the arguments parsed, the CLI is like an AppletTCP,
7689 * so push AppletTCP in the stack.
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007690 */
7691 if (!hlua_applet_tcp_new(hlua->T, appctx)) {
7692 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7693 goto error;
7694 }
7695 hlua->nargs = 1;
7696
7697 /* push keywords in the stack. */
7698 for (i = 0; *args[i]; i++) {
7699 /* Check stack available size. */
7700 if (!lua_checkstack(hlua->T, 1)) {
7701 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7702 goto error;
7703 }
7704 lua_pushstring(hlua->T, args[i]);
7705 hlua->nargs++;
7706 }
7707
7708 /* We must initialize the execution timeouts. */
7709 hlua->max_time = hlua_timeout_session;
7710
7711 /* At this point the execution is safe. */
7712 RESET_SAFE_LJMP(hlua->T);
7713
7714 /* It's ok */
7715 return 0;
7716
7717 /* It's not ok. */
7718error:
7719 RESET_SAFE_LJMP(hlua->T);
7720 hlua_ctx_destroy(hlua);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007721 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007722 return 1;
7723}
7724
7725static int hlua_cli_io_handler_fct(struct appctx *appctx)
7726{
7727 struct hlua *hlua;
7728 struct stream_interface *si;
7729 struct hlua_function *fcn;
7730
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007731 hlua = appctx->ctx.hlua_cli.hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007732 si = appctx->owner;
Willy Tarreau8ae4f752016-12-14 15:41:45 +01007733 fcn = appctx->ctx.hlua_cli.fcn;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007734
7735 /* If the stream is disconnect or closed, ldo nothing. */
7736 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7737 return 1;
7738
7739 /* Execute the function. */
7740 switch (hlua_ctx_resume(hlua, 1)) {
7741
7742 /* finished. */
7743 case HLUA_E_OK:
7744 return 1;
7745
7746 /* yield. */
7747 case HLUA_E_AGAIN:
7748 /* We want write. */
7749 if (HLUA_IS_WAKERESWR(hlua))
Willy Tarreaudb398432018-11-15 11:08:52 +01007750 si_rx_room_blk(si);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007751 /* Set the timeout. */
7752 if (hlua->wake_time != TICK_ETERNITY)
7753 task_schedule(hlua->task, hlua->wake_time);
7754 return 0;
7755
7756 /* finished with error. */
7757 case HLUA_E_ERRMSG:
7758 /* Display log. */
7759 SEND_ERR(NULL, "Lua cli '%s': %s.\n",
7760 fcn->name, lua_tostring(hlua->T, -1));
7761 lua_pop(hlua->T, 1);
7762 return 1;
7763
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007764 case HLUA_E_ETMOUT:
7765 SEND_ERR(NULL, "Lua converter '%s': execution timeout.\n",
7766 fcn->name);
7767 return 1;
7768
7769 case HLUA_E_NOMEM:
7770 SEND_ERR(NULL, "Lua converter '%s': out of memory error.\n",
7771 fcn->name);
7772 return 1;
7773
7774 case HLUA_E_YIELD: /* unexpected */
7775 SEND_ERR(NULL, "Lua converter '%s': yield not allowed.\n",
7776 fcn->name);
7777 return 1;
7778
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007779 case HLUA_E_ERR:
7780 /* Display log. */
7781 SEND_ERR(NULL, "Lua cli '%s' return an unknown error.\n",
7782 fcn->name);
7783 return 1;
7784
7785 default:
7786 return 1;
7787 }
7788
7789 return 1;
7790}
7791
7792static void hlua_cli_io_release_fct(struct appctx *appctx)
7793{
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007794 hlua_ctx_destroy(appctx->ctx.hlua_cli.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007795 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007796}
7797
7798/* This function is an LUA binding used for registering
7799 * new keywords in the cli. It expects a list of keywords
7800 * which are the "path". It is limited to 5 keywords. A
7801 * description of the command, a function to be executed
7802 * for the parsing and a function for io handlers.
7803 */
7804__LJMP static int hlua_register_cli(lua_State *L)
7805{
7806 struct cli_kw_list *cli_kws;
7807 const char *message;
7808 int ref_io;
7809 int len;
7810 struct hlua_function *fcn;
7811 int index;
7812 int i;
7813
7814 MAY_LJMP(check_args(L, 3, "register_cli"));
7815
7816 /* First argument : an array of maximum 5 keywords. */
7817 if (!lua_istable(L, 1))
7818 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table"));
7819
7820 /* Second argument : string with contextual message. */
7821 message = MAY_LJMP(luaL_checkstring(L, 2));
7822
7823 /* Third and fourth argument : lua function. */
7824 ref_io = MAY_LJMP(hlua_checkfunction(L, 3));
7825
7826 /* Allocate and fill the sample fetch keyword struct. */
7827 cli_kws = calloc(1, sizeof(*cli_kws) + sizeof(struct cli_kw) * 2);
7828 if (!cli_kws)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007829 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007830 fcn = calloc(1, sizeof(*fcn));
7831 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007832 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007833
7834 /* Fill path. */
7835 index = 0;
7836 lua_pushnil(L);
7837 while(lua_next(L, 1) != 0) {
7838 if (index >= 5)
7839 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
7840 if (lua_type(L, -1) != LUA_TSTRING)
7841 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
7842 cli_kws->kw[0].str_kw[index] = strdup(lua_tostring(L, -1));
7843 if (!cli_kws->kw[0].str_kw[index])
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007844 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007845 index++;
7846 lua_pop(L, 1);
7847 }
7848
7849 /* Copy help message. */
7850 cli_kws->kw[0].usage = strdup(message);
7851 if (!cli_kws->kw[0].usage)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007852 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007853
7854 /* Fill fcn io handler. */
7855 len = strlen("<lua.cli>") + 1;
7856 for (i = 0; i < index; i++)
7857 len += strlen(cli_kws->kw[0].str_kw[i]) + 1;
7858 fcn->name = calloc(1, len);
7859 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007860 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007861 strncat((char *)fcn->name, "<lua.cli", len);
7862 for (i = 0; i < index; i++) {
7863 strncat((char *)fcn->name, ".", len);
7864 strncat((char *)fcn->name, cli_kws->kw[0].str_kw[i], len);
7865 }
7866 strncat((char *)fcn->name, ">", len);
7867 fcn->function_ref = ref_io;
7868
7869 /* Fill last entries. */
7870 cli_kws->kw[0].private = fcn;
7871 cli_kws->kw[0].parse = hlua_cli_parse_fct;
7872 cli_kws->kw[0].io_handler = hlua_cli_io_handler_fct;
7873 cli_kws->kw[0].io_release = hlua_cli_io_release_fct;
7874
7875 /* Register this new converter */
7876 cli_register_kw(cli_kws);
7877
7878 return 0;
7879}
7880
Thierry FOURNIERbd413492015-03-03 16:52:26 +01007881static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx,
7882 struct proxy *defpx, const char *file, int line,
7883 char **err, unsigned int *timeout)
7884{
7885 const char *error;
7886
7887 error = parse_time_err(args[1], timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02007888 if (error == PARSE_TIME_OVER) {
7889 memprintf(err, "timer overflow in argument <%s> to <%s> (maximum value is 2147483647 ms or ~24.8 days)",
7890 args[1], args[0]);
7891 return -1;
7892 }
7893 else if (error == PARSE_TIME_UNDER) {
7894 memprintf(err, "timer underflow in argument <%s> to <%s> (minimum non-null value is 1 ms)",
7895 args[1], args[0]);
7896 return -1;
7897 }
7898 else if (error) {
Thierry FOURNIERbd413492015-03-03 16:52:26 +01007899 memprintf(err, "%s: invalid timeout", args[0]);
7900 return -1;
7901 }
7902 return 0;
7903}
7904
7905static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx,
7906 struct proxy *defpx, const char *file, int line,
7907 char **err)
7908{
7909 return hlua_read_timeout(args, section_type, curpx, defpx,
7910 file, line, err, &hlua_timeout_session);
7911}
7912
7913static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx,
7914 struct proxy *defpx, const char *file, int line,
7915 char **err)
7916{
7917 return hlua_read_timeout(args, section_type, curpx, defpx,
7918 file, line, err, &hlua_timeout_task);
7919}
7920
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007921static int hlua_applet_timeout(char **args, int section_type, struct proxy *curpx,
7922 struct proxy *defpx, const char *file, int line,
7923 char **err)
7924{
7925 return hlua_read_timeout(args, section_type, curpx, defpx,
7926 file, line, err, &hlua_timeout_applet);
7927}
7928
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01007929static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx,
7930 struct proxy *defpx, const char *file, int line,
7931 char **err)
7932{
7933 char *error;
7934
7935 hlua_nb_instruction = strtoll(args[1], &error, 10);
7936 if (*error != '\0') {
7937 memprintf(err, "%s: invalid number", args[0]);
7938 return -1;
7939 }
7940 return 0;
7941}
7942
Willy Tarreau32f61e22015-03-18 17:54:59 +01007943static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx,
7944 struct proxy *defpx, const char *file, int line,
7945 char **err)
7946{
7947 char *error;
7948
7949 if (*(args[1]) == 0) {
7950 memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]);
7951 return -1;
7952 }
7953 hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L;
7954 if (*error != '\0') {
7955 memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error);
7956 return -1;
7957 }
7958 return 0;
7959}
7960
7961
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007962/* This function is called by the main configuration key "lua-load". It loads and
7963 * execute an lua file during the parsing of the HAProxy configuration file. It is
7964 * the main lua entry point.
7965 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007966 * This function runs with the HAProxy keywords API. It returns -1 if an error
7967 * occurs, otherwise it returns 0.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007968 *
7969 * In some error case, LUA set an error message in top of the stack. This function
7970 * returns this error message in the HAProxy logs and pop it from the stack.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007971 *
7972 * This function can fail with an abort() due to an Lua critical error.
7973 * We are in the configuration parsing process of HAProxy, this abort() is
7974 * tolerated.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007975 */
7976static int hlua_load(char **args, int section_type, struct proxy *curpx,
7977 struct proxy *defpx, const char *file, int line,
7978 char **err)
7979{
7980 int error;
7981
7982 /* Just load and compile the file. */
7983 error = luaL_loadfile(gL.T, args[1]);
7984 if (error) {
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007985 memprintf(err, "error in Lua file '%s': %s", args[1], lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007986 lua_pop(gL.T, 1);
7987 return -1;
7988 }
7989
7990 /* If no syntax error where detected, execute the code. */
7991 error = lua_pcall(gL.T, 0, LUA_MULTRET, 0);
7992 switch (error) {
7993 case LUA_OK:
7994 break;
7995 case LUA_ERRRUN:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007996 memprintf(err, "Lua runtime error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007997 lua_pop(gL.T, 1);
7998 return -1;
7999 case LUA_ERRMEM:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008000 memprintf(err, "Lua out of memory error.n");
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008001 return -1;
8002 case LUA_ERRERR:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008003 memprintf(err, "Lua message handler error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008004 lua_pop(gL.T, 1);
8005 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008006#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM <= 503
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008007 case LUA_ERRGCMM:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008008 memprintf(err, "Lua garbage collector error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008009 lua_pop(gL.T, 1);
8010 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008011#endif
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008012 default:
Ilya Shipitsind4259502020-04-08 01:07:56 +05008013 memprintf(err, "Lua unknown error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008014 lua_pop(gL.T, 1);
8015 return -1;
8016 }
8017
8018 return 0;
8019}
8020
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008021/* Prepend the given <path> followed by a semicolon to the `package.<type>` variable
8022 * in the given <ctx>.
8023 */
8024static int hlua_prepend_path(struct hlua ctx, char *type, char *path)
8025{
8026 lua_getglobal(ctx.T, "package"); /* push package variable */
8027 lua_pushstring(ctx.T, path); /* push given path */
8028 lua_pushstring(ctx.T, ";"); /* push semicolon */
8029 lua_getfield(ctx.T, -3, type); /* push old path */
8030 lua_concat(ctx.T, 3); /* concatenate to new path */
8031 lua_setfield(ctx.T, -2, type); /* store new path */
8032 lua_pop(ctx.T, 1); /* pop package variable */
8033
8034 return 0;
8035}
8036
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008037static int hlua_config_prepend_path(char **args, int section_type, struct proxy *curpx,
8038 struct proxy *defpx, const char *file, int line,
8039 char **err)
8040{
8041 char *path;
8042 char *type = "path";
8043 if (too_many_args(2, args, err, NULL)) {
8044 return -1;
8045 }
8046
8047 if (!(*args[1])) {
8048 memprintf(err, "'%s' expects to receive a <path> as argument", args[0]);
8049 return -1;
8050 }
8051 path = args[1];
8052
8053 if (*args[2]) {
8054 if (strcmp(args[2], "path") != 0 && strcmp(args[2], "cpath") != 0) {
8055 memprintf(err, "'%s' expects <type> to either be 'path' or 'cpath'", args[0]);
8056 return -1;
8057 }
8058 type = args[2];
8059 }
8060
8061 return hlua_prepend_path(gL, type, path);
8062}
8063
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008064/* configuration keywords declaration */
8065static struct cfg_kw_list cfg_kws = {{ },{
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008066 { CFG_GLOBAL, "lua-prepend-path", hlua_config_prepend_path },
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008067 { CFG_GLOBAL, "lua-load", hlua_load },
8068 { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout },
8069 { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout },
Thierry FOURNIER56da1012015-10-01 08:42:31 +02008070 { CFG_GLOBAL, "tune.lua.service-timeout", hlua_applet_timeout },
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008071 { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield },
Willy Tarreau32f61e22015-03-18 17:54:59 +01008072 { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem },
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008073 { 0, NULL, NULL },
8074}};
8075
Willy Tarreau0108d902018-11-25 19:14:37 +01008076INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
8077
Christopher Fauletafd8f102018-11-08 11:34:21 +01008078
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008079/* This function can fail with an abort() due to an Lua critical error.
8080 * We are in the initialisation process of HAProxy, this abort() is
8081 * tolerated.
8082 */
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008083int hlua_post_init()
8084{
8085 struct hlua_init_function *init;
8086 const char *msg;
8087 enum hlua_exec ret;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008088 const char *error;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008089
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05008090 /* Call post initialisation function in safe environment. */
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008091 if (!SET_SAFE_LJMP(gL.T)) {
8092 if (lua_type(gL.T, -1) == LUA_TSTRING)
8093 error = lua_tostring(gL.T, -1);
8094 else
8095 error = "critical error";
8096 fprintf(stderr, "Lua post-init: %s.\n", error);
8097 exit(1);
8098 }
Frédéric Lécaille54f2bcf2018-08-29 13:46:24 +02008099
8100#if USE_OPENSSL
8101 /* Initialize SSL server. */
8102 if (socket_ssl.xprt->prepare_srv) {
8103 int saved_used_backed = global.ssl_used_backend;
8104 // don't affect maxconn automatic computation
8105 socket_ssl.xprt->prepare_srv(&socket_ssl);
8106 global.ssl_used_backend = saved_used_backed;
8107 }
8108#endif
8109
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008110 hlua_fcn_post_init(gL.T);
8111 RESET_SAFE_LJMP(gL.T);
8112
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008113 list_for_each_entry(init, &hlua_init_functions, l) {
8114 lua_rawgeti(gL.T, LUA_REGISTRYINDEX, init->function_ref);
8115 ret = hlua_ctx_resume(&gL, 0);
8116 switch (ret) {
8117 case HLUA_E_OK:
8118 lua_pop(gL.T, -1);
8119 return 1;
8120 case HLUA_E_AGAIN:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008121 ha_alert("Lua init: yield not allowed.\n");
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008122 return 0;
8123 case HLUA_E_ERRMSG:
8124 msg = lua_tostring(gL.T, -1);
Christopher Faulet767a84b2017-11-24 16:50:31 +01008125 ha_alert("lua init: %s.\n", msg);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008126 return 0;
8127 case HLUA_E_ERR:
8128 default:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008129 ha_alert("Lua init: unknown runtime error.\n");
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008130 return 0;
8131 }
8132 }
8133 return 1;
8134}
8135
Willy Tarreau32f61e22015-03-18 17:54:59 +01008136/* The memory allocator used by the Lua stack. <ud> is a pointer to the
8137 * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize>
8138 * is the previously allocated size or the kind of object in case of a new
8139 * allocation. <nsize> is the requested new size.
8140 */
8141static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
8142{
8143 struct hlua_mem_allocator *zone = ud;
8144
8145 if (nsize == 0) {
8146 /* it's a free */
8147 if (ptr)
8148 zone->allocated -= osize;
8149 free(ptr);
8150 return NULL;
8151 }
8152
8153 if (!ptr) {
8154 /* it's a new allocation */
8155 if (zone->limit && zone->allocated + nsize > zone->limit)
8156 return NULL;
8157
8158 ptr = malloc(nsize);
8159 if (ptr)
8160 zone->allocated += nsize;
8161 return ptr;
8162 }
8163
8164 /* it's a realloc */
8165 if (zone->limit && zone->allocated + nsize - osize > zone->limit)
8166 return NULL;
8167
8168 ptr = realloc(ptr, nsize);
8169 if (ptr)
8170 zone->allocated += nsize - osize;
8171 return ptr;
8172}
8173
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008174/* Ithis function can fail with an abort() due to an Lua critical error.
8175 * We are in the initialisation process of HAProxy, this abort() is
8176 * tolerated.
8177 */
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008178void hlua_init(void)
8179{
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008180 int i;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008181 int idx;
8182 struct sample_fetch *sf;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008183 struct sample_conv *sc;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008184 char *p;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008185 const char *error_msg;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008186#ifdef USE_OPENSSL
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008187 struct srv_kw *kw;
8188 int tmp_error;
8189 char *error;
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008190 char *args[] = { /* SSL client configuration. */
8191 "ssl",
8192 "verify",
8193 "none",
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008194 NULL
8195 };
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008196#endif
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008197
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008198 /* Init main lua stack. */
8199 gL.Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01008200 gL.flags = 0;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01008201 LIST_INIT(&gL.com);
Willy Tarreau42ef75f2017-04-12 21:40:29 +02008202 gL.T = lua_newstate(hlua_alloc, &hlua_global_allocator);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008203 hlua_sethlua(&gL);
8204 gL.Tref = LUA_REFNIL;
8205 gL.task = NULL;
8206
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008207 /* From this point, until the end of the initialisation function,
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008208 * the Lua function can fail with an abort. We are in the initialisation
8209 * process of HAProxy, this abort() is tolerated.
8210 */
8211
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008212 /* Initialise lua. */
8213 luaL_openlibs(gL.T);
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008214#define HLUA_PREPEND_PATH_TOSTRING1(x) #x
8215#define HLUA_PREPEND_PATH_TOSTRING(x) HLUA_PREPEND_PATH_TOSTRING1(x)
8216#ifdef HLUA_PREPEND_PATH
8217 hlua_prepend_path(gL, "path", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_PATH));
8218#endif
8219#ifdef HLUA_PREPEND_CPATH
8220 hlua_prepend_path(gL, "cpath", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_CPATH));
8221#endif
8222#undef HLUA_PREPEND_PATH_TOSTRING
8223#undef HLUA_PREPEND_PATH_TOSTRING1
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008224
Thierry Fournier75933d42016-01-21 09:30:18 +01008225 /* Set safe environment for the initialisation. */
8226 if (!SET_SAFE_LJMP(gL.T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01008227 if (lua_type(gL.T, -1) == LUA_TSTRING)
8228 error_msg = lua_tostring(gL.T, -1);
8229 else
8230 error_msg = "critical error";
8231 fprintf(stderr, "Lua init: %s.\n", error_msg);
Thierry Fournier75933d42016-01-21 09:30:18 +01008232 exit(1);
8233 }
8234
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008235 /*
8236 *
8237 * Create "core" object.
8238 *
8239 */
8240
Thierry FOURNIERa2d8c652015-03-11 17:29:39 +01008241 /* This table entry is the object "core" base. */
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008242 lua_newtable(gL.T);
8243
8244 /* Push the loglevel constants. */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008245 for (i = 0; i < NB_LOG_LEVELS; i++)
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008246 hlua_class_const_int(gL.T, log_levels[i], i);
8247
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008248 /* Register special functions. */
8249 hlua_class_function(gL.T, "register_init", hlua_register_init);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01008250 hlua_class_function(gL.T, "register_task", hlua_register_task);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01008251 hlua_class_function(gL.T, "register_fetches", hlua_register_fetches);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01008252 hlua_class_function(gL.T, "register_converters", hlua_register_converters);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02008253 hlua_class_function(gL.T, "register_action", hlua_register_action);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008254 hlua_class_function(gL.T, "register_service", hlua_register_service);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008255 hlua_class_function(gL.T, "register_cli", hlua_register_cli);
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01008256 hlua_class_function(gL.T, "yield", hlua_yield);
Willy Tarreau59551662015-03-10 14:23:13 +01008257 hlua_class_function(gL.T, "set_nice", hlua_set_nice);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01008258 hlua_class_function(gL.T, "sleep", hlua_sleep);
8259 hlua_class_function(gL.T, "msleep", hlua_msleep);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01008260 hlua_class_function(gL.T, "add_acl", hlua_add_acl);
8261 hlua_class_function(gL.T, "del_acl", hlua_del_acl);
8262 hlua_class_function(gL.T, "set_map", hlua_set_map);
8263 hlua_class_function(gL.T, "del_map", hlua_del_map);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008264 hlua_class_function(gL.T, "tcp", hlua_socket_new);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01008265 hlua_class_function(gL.T, "log", hlua_log);
8266 hlua_class_function(gL.T, "Debug", hlua_log_debug);
8267 hlua_class_function(gL.T, "Info", hlua_log_info);
8268 hlua_class_function(gL.T, "Warning", hlua_log_warning);
8269 hlua_class_function(gL.T, "Alert", hlua_log_alert);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02008270 hlua_class_function(gL.T, "done", hlua_done);
Thierry Fournierfb0b5462016-01-21 09:28:58 +01008271 hlua_fcn_reg_core_fcn(gL.T);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008272
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008273 lua_setglobal(gL.T, "core");
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008274
8275 /*
8276 *
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008277 * Create "act" object.
8278 *
8279 */
8280
8281 /* This table entry is the object "act" base. */
8282 lua_newtable(gL.T);
8283
8284 /* push action return constants */
8285 hlua_class_const_int(gL.T, "CONTINUE", ACT_RET_CONT);
8286 hlua_class_const_int(gL.T, "STOP", ACT_RET_STOP);
8287 hlua_class_const_int(gL.T, "YIELD", ACT_RET_YIELD);
8288 hlua_class_const_int(gL.T, "ERROR", ACT_RET_ERR);
8289 hlua_class_const_int(gL.T, "DONE", ACT_RET_DONE);
8290 hlua_class_const_int(gL.T, "DENY", ACT_RET_DENY);
8291 hlua_class_const_int(gL.T, "ABORT", ACT_RET_ABRT);
8292 hlua_class_const_int(gL.T, "INVALID", ACT_RET_INV);
8293
Christopher Faulet501465d2020-02-26 14:54:16 +01008294 hlua_class_function(gL.T, "wake_time", hlua_set_wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01008295
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008296 lua_setglobal(gL.T, "act");
8297
8298 /*
8299 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008300 * Register class Map
8301 *
8302 */
8303
8304 /* This table entry is the object "Map" base. */
8305 lua_newtable(gL.T);
8306
8307 /* register pattern types. */
8308 for (i=0; i<PAT_MATCH_NUM; i++)
8309 hlua_class_const_int(gL.T, pat_match_names[i], i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008310 for (i=0; i<PAT_MATCH_NUM; i++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008311 snprintf(trash.area, trash.size, "_%s", pat_match_names[i]);
8312 hlua_class_const_int(gL.T, trash.area, i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008313 }
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008314
8315 /* register constructor. */
8316 hlua_class_function(gL.T, "new", hlua_map_new);
8317
8318 /* Create and fill the metatable. */
8319 lua_newtable(gL.T);
8320
Ilya Shipitsind4259502020-04-08 01:07:56 +05008321 /* Create and fill the __index entry. */
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008322 lua_pushstring(gL.T, "__index");
8323 lua_newtable(gL.T);
8324
8325 /* Register . */
8326 hlua_class_function(gL.T, "lookup", hlua_map_lookup);
8327 hlua_class_function(gL.T, "slookup", hlua_map_slookup);
8328
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008329 lua_rawset(gL.T, -3);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008330
Thierry Fournier45e78d72016-02-19 18:34:46 +01008331 /* Register previous table in the registry with reference and named entry.
8332 * The function hlua_register_metatable() pops the stack, so we
8333 * previously create a copy of the table.
8334 */
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008335 lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008336 class_map_ref = hlua_register_metatable(gL.T, CLASS_MAP);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008337
8338 /* Assign the metatable to the mai Map object. */
8339 lua_setmetatable(gL.T, -2);
8340
8341 /* Set a name to the table. */
8342 lua_setglobal(gL.T, "Map");
8343
8344 /*
8345 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008346 * Register class Channel
8347 *
8348 */
8349
8350 /* Create and fill the metatable. */
8351 lua_newtable(gL.T);
8352
Ilya Shipitsind4259502020-04-08 01:07:56 +05008353 /* Create and fill the __index entry. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008354 lua_pushstring(gL.T, "__index");
8355 lua_newtable(gL.T);
8356
8357 /* Register . */
8358 hlua_class_function(gL.T, "get", hlua_channel_get);
8359 hlua_class_function(gL.T, "dup", hlua_channel_dup);
8360 hlua_class_function(gL.T, "getline", hlua_channel_getline);
8361 hlua_class_function(gL.T, "set", hlua_channel_set);
8362 hlua_class_function(gL.T, "append", hlua_channel_append);
8363 hlua_class_function(gL.T, "send", hlua_channel_send);
8364 hlua_class_function(gL.T, "forward", hlua_channel_forward);
8365 hlua_class_function(gL.T, "get_in_len", hlua_channel_get_in_len);
8366 hlua_class_function(gL.T, "get_out_len", hlua_channel_get_out_len);
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01008367 hlua_class_function(gL.T, "is_full", hlua_channel_is_full);
Christopher Faulet2ac9ba22020-02-25 10:15:50 +01008368 hlua_class_function(gL.T, "is_resp", hlua_channel_is_resp);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008369
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008370 lua_rawset(gL.T, -3);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008371
8372 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008373 class_channel_ref = hlua_register_metatable(gL.T, CLASS_CHANNEL);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008374
8375 /*
8376 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008377 * Register class Fetches
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008378 *
8379 */
8380
8381 /* Create and fill the metatable. */
8382 lua_newtable(gL.T);
8383
Ilya Shipitsind4259502020-04-08 01:07:56 +05008384 /* Create and fill the __index entry. */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008385 lua_pushstring(gL.T, "__index");
8386 lua_newtable(gL.T);
8387
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008388 /* Browse existing fetches and create the associated
8389 * object method.
8390 */
8391 sf = NULL;
8392 while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) {
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008393 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8394 * by an underscore.
8395 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008396 strncpy(trash.area, sf->kw, trash.size);
8397 trash.area[trash.size - 1] = '\0';
8398 for (p = trash.area; *p; p++)
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008399 if (*p == '.' || *p == '-' || *p == '+')
8400 *p = '_';
8401
8402 /* Register the function. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008403 lua_pushstring(gL.T, trash.area);
Willy Tarreau2ec22742015-03-10 14:27:20 +01008404 lua_pushlightuserdata(gL.T, sf);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008405 lua_pushcclosure(gL.T, hlua_run_sample_fetch, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008406 lua_rawset(gL.T, -3);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008407 }
8408
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008409 lua_rawset(gL.T, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008410
8411 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008412 class_fetches_ref = hlua_register_metatable(gL.T, CLASS_FETCHES);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008413
8414 /*
8415 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008416 * Register class Converters
8417 *
8418 */
8419
8420 /* Create and fill the metatable. */
8421 lua_newtable(gL.T);
8422
8423 /* Create and fill the __index entry. */
8424 lua_pushstring(gL.T, "__index");
8425 lua_newtable(gL.T);
8426
8427 /* Browse existing converters and create the associated
8428 * object method.
8429 */
8430 sc = NULL;
8431 while ((sc = sample_conv_getnext(sc, &idx)) != NULL) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008432 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8433 * by an underscore.
8434 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008435 strncpy(trash.area, sc->kw, trash.size);
8436 trash.area[trash.size - 1] = '\0';
8437 for (p = trash.area; *p; p++)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008438 if (*p == '.' || *p == '-' || *p == '+')
8439 *p = '_';
8440
8441 /* Register the function. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008442 lua_pushstring(gL.T, trash.area);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008443 lua_pushlightuserdata(gL.T, sc);
8444 lua_pushcclosure(gL.T, hlua_run_sample_conv, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008445 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008446 }
8447
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008448 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008449
8450 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008451 class_converters_ref = hlua_register_metatable(gL.T, CLASS_CONVERTERS);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008452
8453 /*
8454 *
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008455 * Register class HTTP
8456 *
8457 */
8458
8459 /* Create and fill the metatable. */
8460 lua_newtable(gL.T);
8461
Ilya Shipitsind4259502020-04-08 01:07:56 +05008462 /* Create and fill the __index entry. */
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008463 lua_pushstring(gL.T, "__index");
8464 lua_newtable(gL.T);
8465
8466 /* Register Lua functions. */
8467 hlua_class_function(gL.T, "req_get_headers",hlua_http_req_get_headers);
8468 hlua_class_function(gL.T, "req_del_header", hlua_http_req_del_hdr);
8469 hlua_class_function(gL.T, "req_rep_header", hlua_http_req_rep_hdr);
8470 hlua_class_function(gL.T, "req_rep_value", hlua_http_req_rep_val);
8471 hlua_class_function(gL.T, "req_add_header", hlua_http_req_add_hdr);
8472 hlua_class_function(gL.T, "req_set_header", hlua_http_req_set_hdr);
8473 hlua_class_function(gL.T, "req_set_method", hlua_http_req_set_meth);
8474 hlua_class_function(gL.T, "req_set_path", hlua_http_req_set_path);
8475 hlua_class_function(gL.T, "req_set_query", hlua_http_req_set_query);
8476 hlua_class_function(gL.T, "req_set_uri", hlua_http_req_set_uri);
8477
8478 hlua_class_function(gL.T, "res_get_headers",hlua_http_res_get_headers);
8479 hlua_class_function(gL.T, "res_del_header", hlua_http_res_del_hdr);
8480 hlua_class_function(gL.T, "res_rep_header", hlua_http_res_rep_hdr);
8481 hlua_class_function(gL.T, "res_rep_value", hlua_http_res_rep_val);
8482 hlua_class_function(gL.T, "res_add_header", hlua_http_res_add_hdr);
8483 hlua_class_function(gL.T, "res_set_header", hlua_http_res_set_hdr);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02008484 hlua_class_function(gL.T, "res_set_status", hlua_http_res_set_status);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008485
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008486 lua_rawset(gL.T, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008487
8488 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008489 class_http_ref = hlua_register_metatable(gL.T, CLASS_HTTP);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008490
8491 /*
8492 *
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008493 * Register class AppletTCP
8494 *
8495 */
8496
8497 /* Create and fill the metatable. */
8498 lua_newtable(gL.T);
8499
Ilya Shipitsind4259502020-04-08 01:07:56 +05008500 /* Create and fill the __index entry. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008501 lua_pushstring(gL.T, "__index");
8502 lua_newtable(gL.T);
8503
8504 /* Register Lua functions. */
Thierry FOURNIER / OZON.IO3e1d7912016-12-12 12:29:34 +01008505 hlua_class_function(gL.T, "getline", hlua_applet_tcp_getline);
8506 hlua_class_function(gL.T, "receive", hlua_applet_tcp_recv);
8507 hlua_class_function(gL.T, "send", hlua_applet_tcp_send);
8508 hlua_class_function(gL.T, "set_priv", hlua_applet_tcp_set_priv);
8509 hlua_class_function(gL.T, "get_priv", hlua_applet_tcp_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01008510 hlua_class_function(gL.T, "set_var", hlua_applet_tcp_set_var);
8511 hlua_class_function(gL.T, "unset_var", hlua_applet_tcp_unset_var);
8512 hlua_class_function(gL.T, "get_var", hlua_applet_tcp_get_var);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008513
8514 lua_settable(gL.T, -3);
8515
8516 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008517 class_applet_tcp_ref = hlua_register_metatable(gL.T, CLASS_APPLET_TCP);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008518
8519 /*
8520 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008521 * Register class AppletHTTP
8522 *
8523 */
8524
8525 /* Create and fill the metatable. */
8526 lua_newtable(gL.T);
8527
Ilya Shipitsind4259502020-04-08 01:07:56 +05008528 /* Create and fill the __index entry. */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008529 lua_pushstring(gL.T, "__index");
8530 lua_newtable(gL.T);
8531
8532 /* Register Lua functions. */
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01008533 hlua_class_function(gL.T, "set_priv", hlua_applet_http_set_priv);
8534 hlua_class_function(gL.T, "get_priv", hlua_applet_http_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01008535 hlua_class_function(gL.T, "set_var", hlua_applet_http_set_var);
8536 hlua_class_function(gL.T, "unset_var", hlua_applet_http_unset_var);
8537 hlua_class_function(gL.T, "get_var", hlua_applet_http_get_var);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008538 hlua_class_function(gL.T, "getline", hlua_applet_http_getline);
8539 hlua_class_function(gL.T, "receive", hlua_applet_http_recv);
8540 hlua_class_function(gL.T, "send", hlua_applet_http_send);
8541 hlua_class_function(gL.T, "add_header", hlua_applet_http_addheader);
8542 hlua_class_function(gL.T, "set_status", hlua_applet_http_status);
8543 hlua_class_function(gL.T, "start_response", hlua_applet_http_start_response);
8544
8545 lua_settable(gL.T, -3);
8546
8547 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008548 class_applet_http_ref = hlua_register_metatable(gL.T, CLASS_APPLET_HTTP);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008549
8550 /*
8551 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008552 * Register class TXN
8553 *
8554 */
8555
8556 /* Create and fill the metatable. */
8557 lua_newtable(gL.T);
8558
Ilya Shipitsind4259502020-04-08 01:07:56 +05008559 /* Create and fill the __index entry. */
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008560 lua_pushstring(gL.T, "__index");
8561 lua_newtable(gL.T);
8562
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01008563 /* Register Lua functions. */
Patrick Hemmer268a7072018-05-11 12:52:31 -04008564 hlua_class_function(gL.T, "set_priv", hlua_set_priv);
8565 hlua_class_function(gL.T, "get_priv", hlua_get_priv);
8566 hlua_class_function(gL.T, "set_var", hlua_set_var);
8567 hlua_class_function(gL.T, "unset_var", hlua_unset_var);
8568 hlua_class_function(gL.T, "get_var", hlua_get_var);
8569 hlua_class_function(gL.T, "done", hlua_txn_done);
Christopher Faulet700d9e82020-01-31 12:21:52 +01008570 hlua_class_function(gL.T, "reply", hlua_txn_reply_new);
Patrick Hemmer268a7072018-05-11 12:52:31 -04008571 hlua_class_function(gL.T, "set_loglevel", hlua_txn_set_loglevel);
8572 hlua_class_function(gL.T, "set_tos", hlua_txn_set_tos);
8573 hlua_class_function(gL.T, "set_mark", hlua_txn_set_mark);
8574 hlua_class_function(gL.T, "set_priority_class", hlua_txn_set_priority_class);
8575 hlua_class_function(gL.T, "set_priority_offset", hlua_txn_set_priority_offset);
8576 hlua_class_function(gL.T, "deflog", hlua_txn_deflog);
8577 hlua_class_function(gL.T, "log", hlua_txn_log);
8578 hlua_class_function(gL.T, "Debug", hlua_txn_log_debug);
8579 hlua_class_function(gL.T, "Info", hlua_txn_log_info);
8580 hlua_class_function(gL.T, "Warning", hlua_txn_log_warning);
8581 hlua_class_function(gL.T, "Alert", hlua_txn_log_alert);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01008582
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008583 lua_rawset(gL.T, -3);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008584
8585 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008586 class_txn_ref = hlua_register_metatable(gL.T, CLASS_TXN);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008587
8588 /*
8589 *
Christopher Faulet700d9e82020-01-31 12:21:52 +01008590 * Register class reply
8591 *
8592 */
8593 lua_newtable(gL.T);
8594 lua_pushstring(gL.T, "__index");
8595 lua_newtable(gL.T);
8596 hlua_class_function(gL.T, "set_status", hlua_txn_reply_set_status);
8597 hlua_class_function(gL.T, "add_header", hlua_txn_reply_add_header);
8598 hlua_class_function(gL.T, "del_header", hlua_txn_reply_del_header);
8599 hlua_class_function(gL.T, "set_body", hlua_txn_reply_set_body);
8600 lua_settable(gL.T, -3); /* Sets the __index entry. */
8601 class_txn_reply_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
8602
8603
8604 /*
8605 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008606 * Register class Socket
8607 *
8608 */
8609
8610 /* Create and fill the metatable. */
8611 lua_newtable(gL.T);
8612
Ilya Shipitsind4259502020-04-08 01:07:56 +05008613 /* Create and fill the __index entry. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008614 lua_pushstring(gL.T, "__index");
8615 lua_newtable(gL.T);
8616
Baptiste Assmann84bb4932015-03-02 21:40:06 +01008617#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008618 hlua_class_function(gL.T, "connect_ssl", hlua_socket_connect_ssl);
Baptiste Assmann84bb4932015-03-02 21:40:06 +01008619#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008620 hlua_class_function(gL.T, "connect", hlua_socket_connect);
8621 hlua_class_function(gL.T, "send", hlua_socket_send);
8622 hlua_class_function(gL.T, "receive", hlua_socket_receive);
8623 hlua_class_function(gL.T, "close", hlua_socket_close);
8624 hlua_class_function(gL.T, "getpeername", hlua_socket_getpeername);
8625 hlua_class_function(gL.T, "getsockname", hlua_socket_getsockname);
8626 hlua_class_function(gL.T, "setoption", hlua_socket_setoption);
8627 hlua_class_function(gL.T, "settimeout", hlua_socket_settimeout);
8628
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008629 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008630
8631 /* Register the garbage collector entry. */
8632 lua_pushstring(gL.T, "__gc");
8633 lua_pushcclosure(gL.T, hlua_socket_gc, 0);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008634 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008635
8636 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008637 class_socket_ref = hlua_register_metatable(gL.T, CLASS_SOCKET);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008638
8639 /* Proxy and server configuration initialisation. */
8640 memset(&socket_proxy, 0, sizeof(socket_proxy));
8641 init_new_proxy(&socket_proxy);
8642 socket_proxy.parent = NULL;
8643 socket_proxy.last_change = now.tv_sec;
8644 socket_proxy.id = "LUA-SOCKET";
8645 socket_proxy.cap = PR_CAP_FE | PR_CAP_BE;
8646 socket_proxy.maxconn = 0;
8647 socket_proxy.accept = NULL;
8648 socket_proxy.options2 |= PR_O2_INDEPSTR;
8649 socket_proxy.srv = NULL;
8650 socket_proxy.conn_retries = 0;
8651 socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */
8652
8653 /* Init TCP server: unchanged parameters */
8654 memset(&socket_tcp, 0, sizeof(socket_tcp));
8655 socket_tcp.next = NULL;
8656 socket_tcp.proxy = &socket_proxy;
8657 socket_tcp.obj_type = OBJ_TYPE_SERVER;
8658 LIST_INIT(&socket_tcp.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04008659 socket_tcp.pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02008660 socket_tcp.idle_conns = NULL;
8661 socket_tcp.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02008662 socket_tcp.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008663 socket_tcp.last_change = 0;
8664 socket_tcp.id = "LUA-TCP-CONN";
8665 socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8666 socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8667 socket_tcp.pp_opts = 0; /* Remove proxy protocol. */
8668
8669 /* XXX: Copy default parameter from default server,
8670 * but the default server is not initialized.
8671 */
8672 socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue;
8673 socket_tcp.minconn = socket_proxy.defsrv.minconn;
8674 socket_tcp.maxconn = socket_proxy.defsrv.maxconn;
8675 socket_tcp.slowstart = socket_proxy.defsrv.slowstart;
8676 socket_tcp.onerror = socket_proxy.defsrv.onerror;
8677 socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
8678 socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup;
8679 socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
8680 socket_tcp.uweight = socket_proxy.defsrv.iweight;
8681 socket_tcp.iweight = socket_proxy.defsrv.iweight;
8682
8683 socket_tcp.check.status = HCHK_STATUS_INI;
8684 socket_tcp.check.rise = socket_proxy.defsrv.check.rise;
8685 socket_tcp.check.fall = socket_proxy.defsrv.check.fall;
8686 socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */
8687 socket_tcp.check.server = &socket_tcp;
8688
8689 socket_tcp.agent.status = HCHK_STATUS_INI;
8690 socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise;
8691 socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall;
8692 socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */
8693 socket_tcp.agent.server = &socket_tcp;
8694
Willy Tarreaua261e9b2016-12-22 20:44:00 +01008695 socket_tcp.xprt = xprt_get(XPRT_RAW);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008696
8697#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008698 /* Init TCP server: unchanged parameters */
8699 memset(&socket_ssl, 0, sizeof(socket_ssl));
8700 socket_ssl.next = NULL;
8701 socket_ssl.proxy = &socket_proxy;
8702 socket_ssl.obj_type = OBJ_TYPE_SERVER;
8703 LIST_INIT(&socket_ssl.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04008704 socket_ssl.pendconns = EB_ROOT;
Willy Tarreaub784b352019-02-07 14:48:24 +01008705 socket_ssl.idle_conns = NULL;
8706 socket_ssl.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02008707 socket_ssl.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008708 socket_ssl.last_change = 0;
8709 socket_ssl.id = "LUA-SSL-CONN";
8710 socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8711 socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8712 socket_ssl.pp_opts = 0; /* Remove proxy protocol. */
8713
8714 /* XXX: Copy default parameter from default server,
8715 * but the default server is not initialized.
8716 */
8717 socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue;
8718 socket_ssl.minconn = socket_proxy.defsrv.minconn;
8719 socket_ssl.maxconn = socket_proxy.defsrv.maxconn;
8720 socket_ssl.slowstart = socket_proxy.defsrv.slowstart;
8721 socket_ssl.onerror = socket_proxy.defsrv.onerror;
8722 socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
8723 socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup;
8724 socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
8725 socket_ssl.uweight = socket_proxy.defsrv.iweight;
8726 socket_ssl.iweight = socket_proxy.defsrv.iweight;
8727
8728 socket_ssl.check.status = HCHK_STATUS_INI;
8729 socket_ssl.check.rise = socket_proxy.defsrv.check.rise;
8730 socket_ssl.check.fall = socket_proxy.defsrv.check.fall;
8731 socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */
8732 socket_ssl.check.server = &socket_ssl;
8733
8734 socket_ssl.agent.status = HCHK_STATUS_INI;
8735 socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise;
8736 socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall;
8737 socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */
8738 socket_ssl.agent.server = &socket_ssl;
8739
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008740 socket_ssl.use_ssl = 1;
Willy Tarreaua261e9b2016-12-22 20:44:00 +01008741 socket_ssl.xprt = xprt_get(XPRT_SSL);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008742
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008743 for (idx = 0; args[idx] != NULL; idx++) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008744 if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */
8745 /*
8746 *
8747 * If the keyword is not known, we can search in the registered
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008748 * server keywords. This is useful to configure special SSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008749 * features like client certificates and ssl_verify.
8750 *
8751 */
8752 tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error);
8753 if (tmp_error != 0) {
8754 fprintf(stderr, "INTERNAL ERROR: %s\n", error);
8755 abort(); /* This must be never arrives because the command line
8756 not editable by the user. */
8757 }
8758 idx += kw->skip;
8759 }
8760 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008761#endif
Thierry Fournier75933d42016-01-21 09:30:18 +01008762
8763 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008764}
Willy Tarreaubb57d942016-12-21 19:04:56 +01008765
Tim Duesterhusd0c0ca22020-07-04 11:53:26 +02008766static void hlua_deinit()
8767{
8768 lua_close(gL.T);
8769}
8770
8771REGISTER_POST_DEINIT(hlua_deinit);
8772
Willy Tarreau80713382018-11-26 10:19:54 +01008773static void hlua_register_build_options(void)
8774{
Willy Tarreaubb57d942016-12-21 19:04:56 +01008775 char *ptr = NULL;
Willy Tarreau80713382018-11-26 10:19:54 +01008776
Willy Tarreaubb57d942016-12-21 19:04:56 +01008777 memprintf(&ptr, "Built with Lua version : %s", LUA_RELEASE);
8778 hap_register_build_opts(ptr, 1);
8779}
Willy Tarreau80713382018-11-26 10:19:54 +01008780
8781INITCALL0(STG_REGISTER, hlua_register_build_options);