blob: 9616a75186cb4463b5d24da1182c2525d6583390 [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))) {
Christopher Fauletf98d8212020-10-02 18:13:52 +0200948 if (level == LOG_DEBUG && !(global.mode & MODE_DEBUG))
949 return;
950
Willy Tarreaua678b432015-08-28 10:14:59 +0200951 get_localtime(date.tv_sec, &tm);
952 fprintf(stderr, "[%s] %03d/%02d%02d%02d (%d) : %s\n",
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100953 log_levels[level], tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec,
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200954 (int)getpid(), trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100955 fflush(stderr);
956 }
957}
958
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100959/* This function just ensure that the yield will be always
960 * returned with a timeout and permit to set some flags
961 */
962__LJMP void hlua_yieldk(lua_State *L, int nresults, int ctx,
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100963 lua_KFunction k, int timeout, unsigned int flags)
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100964{
965 struct hlua *hlua = hlua_gethlua(L);
966
967 /* Set the wake timeout. If timeout is required, we set
968 * the expiration time.
969 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +0200970 hlua->wake_time = timeout;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100971
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +0100972 hlua->flags |= flags;
973
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100974 /* Process the yield. */
Willy Tarreau9635e032018-10-16 17:52:55 +0200975 MAY_LJMP(lua_yieldk(L, nresults, ctx, k));
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100976}
977
Willy Tarreau87b09662015-04-03 00:22:06 +0200978/* This function initialises the Lua environment stored in the stream.
979 * It must be called at the start of the stream. This function creates
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100980 * an LUA coroutine. It can not be use to crete the main LUA context.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200981 *
982 * This function is particular. it initialises a new Lua thread. If the
983 * initialisation fails (example: out of memory error), the lua function
984 * throws an error (longjmp).
985 *
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100986 * In some case (at least one), this function can be called from safe
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500987 * environment, so we must not initialise it. While the support of
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100988 * threads appear, the safe environment set a lock to ensure only one
989 * Lua execution at a time. If we initialize safe environment in another
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500990 * safe environment, we have a dead lock.
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100991 *
992 * set "already_safe" true if the context is initialized form safe
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500993 * Lua function.
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100994 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800995 * This function manipulates two Lua stacks: the main and the thread. Only
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200996 * the main stack can fail. The thread is not manipulated. This function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800997 * MUST NOT manipulate the created thread stack state, because it is not
Ilya Shipitsin856aabc2020-04-16 23:51:34 +0500998 * protected against errors thrown by the thread stack.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100999 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001000int hlua_ctx_init(struct hlua *lua, struct task *task, int already_safe)
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001001{
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001002 if (!already_safe) {
1003 if (!SET_SAFE_LJMP(gL.T)) {
1004 lua->Tref = LUA_REFNIL;
1005 return 0;
1006 }
Thierry FOURNIERbabae282015-09-17 11:36:37 +02001007 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001008 lua->Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001009 lua->flags = 0;
Willy Tarreauf31af932020-01-14 09:59:38 +01001010 lua->gc_count = 0;
Christopher Fauletbc275a92020-02-26 14:55:16 +01001011 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001012 LIST_INIT(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001013 lua->T = lua_newthread(gL.T);
1014 if (!lua->T) {
1015 lua->Tref = LUA_REFNIL;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001016 if (!already_safe)
1017 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001018 return 0;
1019 }
1020 hlua_sethlua(lua);
1021 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
1022 lua->task = task;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01001023 if (!already_safe)
1024 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001025 return 1;
1026}
1027
Willy Tarreau87b09662015-04-03 00:22:06 +02001028/* Used to destroy the Lua coroutine when the attached stream or task
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001029 * is destroyed. The destroy also the memory context. The struct "lua"
1030 * is not freed.
1031 */
1032void hlua_ctx_destroy(struct hlua *lua)
1033{
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001034 if (!lua)
Thierry FOURNIERa718b292015-03-04 16:48:34 +01001035 return;
1036
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001037 if (!lua->T)
1038 goto end;
1039
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001040 /* Purge all the pending signals. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001041 notification_purge(&lua->com);
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01001042
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001043 if (!SET_SAFE_LJMP(lua->T))
1044 return;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001045 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001046 RESET_SAFE_LJMP(lua->T);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001047
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001048 if (!SET_SAFE_LJMP(gL.T))
1049 return;
1050 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
1051 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001052 /* Forces a garbage collecting process. If the Lua program is finished
1053 * without error, we run the GC on the thread pointer. Its freed all
1054 * the unused memory.
1055 * If the thread is finnish with an error or is currently yielded,
1056 * it seems that the GC applied on the thread doesn't clean anything,
1057 * so e run the GC on the main thread.
1058 * NOTE: maybe this action locks all the Lua threads untiml the en of
1059 * the garbage collection.
1060 */
Willy Tarreauf31af932020-01-14 09:59:38 +01001061 if (lua->gc_count) {
Thierry FOURNIER7bd10d52017-07-17 00:44:40 +02001062 if (!SET_SAFE_LJMP(gL.T))
Thierry FOURNIER75d02082017-07-12 13:41:33 +02001063 return;
Thierry FOURNIER7bd10d52017-07-17 00:44:40 +02001064 lua_gc(gL.T, LUA_GCCOLLECT, 0);
1065 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02001066 }
Thierry FOURNIER5a50a852015-09-23 16:59:28 +02001067
Thierry FOURNIERa7b536b2015-09-21 22:50:24 +02001068 lua->T = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01001069
1070end:
Willy Tarreaubafbe012017-11-24 17:34:44 +01001071 pool_free(pool_head_hlua, lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001072}
1073
1074/* This function is used to restore the Lua context when a coroutine
1075 * fails. This function copy the common memory between old coroutine
1076 * and the new coroutine. The old coroutine is destroyed, and its
1077 * replaced by the new coroutine.
1078 * If the flag "keep_msg" is set, the last entry of the old is assumed
1079 * as string error message and it is copied in the new stack.
1080 */
1081static int hlua_ctx_renew(struct hlua *lua, int keep_msg)
1082{
1083 lua_State *T;
1084 int new_ref;
1085
1086 /* Renew the main LUA stack doesn't have sense. */
1087 if (lua == &gL)
1088 return 0;
1089
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001090 /* New Lua coroutine. */
1091 T = lua_newthread(gL.T);
1092 if (!T)
1093 return 0;
1094
1095 /* Copy last error message. */
1096 if (keep_msg)
1097 lua_xmove(lua->T, T, 1);
1098
1099 /* Copy data between the coroutines. */
1100 lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1101 lua_xmove(lua->T, T, 1);
Ilya Shipitsin46a030c2020-07-05 16:36:08 +05001102 new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Value popped. */
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001103
1104 /* Destroy old data. */
1105 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1106
1107 /* The thread is garbage collected by Lua. */
1108 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
1109
1110 /* Fill the struct with the new coroutine values. */
1111 lua->Mref = new_ref;
1112 lua->T = T;
1113 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
1114
1115 /* Set context. */
1116 hlua_sethlua(lua);
1117
1118 return 1;
1119}
1120
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001121void hlua_hook(lua_State *L, lua_Debug *ar)
1122{
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001123 struct hlua *hlua = hlua_gethlua(L);
1124
1125 /* Lua cannot yield when its returning from a function,
1126 * so, we can fix the interrupt hook to 1 instruction,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001127 * expecting that the function is finished.
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001128 */
1129 if (lua_gethookmask(L) & LUA_MASKRET) {
1130 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, 1);
1131 return;
1132 }
1133
1134 /* restore the interrupt condition. */
1135 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1136
1137 /* If we interrupt the Lua processing in yieldable state, we yield.
1138 * If the state is not yieldable, trying yield causes an error.
1139 */
1140 if (lua_isyieldable(L))
Willy Tarreau9635e032018-10-16 17:52:55 +02001141 MAY_LJMP(hlua_yieldk(L, 0, 0, NULL, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001142
Thierry FOURNIERa85cfb12015-03-13 14:50:06 +01001143 /* If we cannot yield, update the clock and check the timeout. */
1144 tv_update_date(0, 1);
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001145 hlua->run_time += now_ms - hlua->start_time;
1146 if (hlua->max_time && hlua->run_time >= hlua->max_time) {
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001147 lua_pushfstring(L, "execution timeout");
1148 WILL_LJMP(lua_error(L));
1149 }
1150
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001151 /* Update the start time. */
1152 hlua->start_time = now_ms;
1153
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001154 /* Try to interrupt the process at the end of the current
1155 * unyieldable function.
1156 */
1157 lua_sethook(hlua->T, hlua_hook, LUA_MASKRET|LUA_MASKCOUNT, hlua_nb_instruction);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001158}
1159
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001160/* This function start or resumes the Lua stack execution. If the flag
1161 * "yield_allowed" if no set and the LUA stack execution returns a yield
1162 * The function return an error.
1163 *
1164 * The function can returns 4 values:
1165 * - HLUA_E_OK : The execution is terminated without any errors.
1166 * - HLUA_E_AGAIN : The execution must continue at the next associated
1167 * task wakeup.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001168 * - HLUA_E_ERRMSG : An error has occurred, an error message is set in
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001169 * the top of the stack.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001170 * - HLUA_E_ERR : An error has occurred without error message.
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001171 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001172 * If an error occurred, the stack is renewed and it is ready to run new
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001173 * LUA code.
1174 */
1175static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed)
1176{
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001177#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
1178 int nres;
1179#endif
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001180 int ret;
1181 const char *msg;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001182 const char *trace;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001183
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001184 /* Initialise run time counter. */
1185 if (!HLUA_IS_RUNNING(lua))
1186 lua->run_time = 0;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001187
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001188 /* Lock the whole Lua execution. This lock must be before the
1189 * label "resume_execution".
1190 */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001191 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001192
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001193resume_execution:
1194
1195 /* This hook interrupts the Lua processing each 'hlua_nb_instruction'
1196 * instructions. it is used for preventing infinite loops.
1197 */
1198 lua_sethook(lua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1199
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001200 /* Remove all flags except the running flags. */
Thierry FOURNIER2f3867f2015-09-28 01:02:01 +02001201 HLUA_SET_RUN(lua);
1202 HLUA_CLR_CTRLYIELD(lua);
1203 HLUA_CLR_WAKERESWR(lua);
1204 HLUA_CLR_WAKEREQWR(lua);
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001205
Christopher Fauletbc275a92020-02-26 14:55:16 +01001206 /* Update the start time and reset wake_time. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001207 lua->start_time = now_ms;
Christopher Fauletbc275a92020-02-26 14:55:16 +01001208 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001209
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001210 /* Call the function. */
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001211#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 504
1212 ret = lua_resume(lua->T, gL.T, lua->nargs, &nres);
1213#else
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001214 ret = lua_resume(lua->T, gL.T, lua->nargs);
Christopher Faulet08ed98f2020-07-28 10:33:25 +02001215#endif
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001216 switch (ret) {
1217
1218 case LUA_OK:
1219 ret = HLUA_E_OK;
1220 break;
1221
1222 case LUA_YIELD:
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001223 /* Check if the execution timeout is expired. It it is the case, we
1224 * break the Lua execution.
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001225 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001226 tv_update_date(0, 1);
1227 lua->run_time += now_ms - lua->start_time;
1228 if (lua->max_time && lua->run_time > lua->max_time) {
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001229 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001230 ret = HLUA_E_ETMOUT;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001231 break;
1232 }
1233 /* Process the forced yield. if the general yield is not allowed or
1234 * if no task were associated this the current Lua execution
1235 * coroutine, we resume the execution. Else we want to return in the
1236 * scheduler and we want to be waked up again, to continue the
1237 * current Lua execution. So we schedule our own task.
1238 */
1239 if (HLUA_IS_CTRLYIELDING(lua)) {
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001240 if (!yield_allowed || !lua->task)
1241 goto resume_execution;
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001242 task_wakeup(lua->task, TASK_WOKEN_MSG);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001243 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001244 if (!yield_allowed) {
1245 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001246 ret = HLUA_E_YIELD;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001247 break;
1248 }
1249 ret = HLUA_E_AGAIN;
1250 break;
1251
1252 case LUA_ERRRUN:
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001253
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001254 /* Special exit case. The traditional exit is returned as an error
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001255 * because the errors ares the only one mean to return immediately
1256 * from and lua execution.
1257 */
1258 if (lua->flags & HLUA_EXIT) {
1259 ret = HLUA_E_OK;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01001260 hlua_ctx_renew(lua, 1);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001261 break;
1262 }
1263
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001264 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001265 if (!lua_checkstack(lua->T, 1)) {
1266 ret = HLUA_E_ERR;
1267 break;
1268 }
1269 msg = lua_tostring(lua->T, -1);
1270 lua_settop(lua->T, 0); /* Empty the stack. */
1271 lua_pop(lua->T, 1);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001272 trace = hlua_traceback(lua->T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001273 if (msg)
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001274 lua_pushfstring(lua->T, "runtime error: %s from %s", msg, trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001275 else
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001276 lua_pushfstring(lua->T, "unknown runtime error from %s", trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001277 ret = HLUA_E_ERRMSG;
1278 break;
1279
1280 case LUA_ERRMEM:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001281 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001282 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001283 ret = HLUA_E_NOMEM;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001284 break;
1285
1286 case LUA_ERRERR:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001287 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001288 if (!lua_checkstack(lua->T, 1)) {
1289 ret = HLUA_E_ERR;
1290 break;
1291 }
1292 msg = lua_tostring(lua->T, -1);
1293 lua_settop(lua->T, 0); /* Empty the stack. */
1294 lua_pop(lua->T, 1);
1295 if (msg)
1296 lua_pushfstring(lua->T, "message handler error: %s", msg);
1297 else
1298 lua_pushfstring(lua->T, "message handler error");
1299 ret = HLUA_E_ERRMSG;
1300 break;
1301
1302 default:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001303 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001304 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001305 ret = HLUA_E_ERR;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001306 break;
1307 }
1308
1309 switch (ret) {
1310 case HLUA_E_AGAIN:
1311 break;
1312
1313 case HLUA_E_ERRMSG:
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001314 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001315 hlua_ctx_renew(lua, 1);
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001316 HLUA_CLR_RUN(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001317 break;
1318
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001319 case HLUA_E_ETMOUT:
1320 case HLUA_E_NOMEM:
1321 case HLUA_E_YIELD:
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001322 case HLUA_E_ERR:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001323 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001324 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001325 hlua_ctx_renew(lua, 0);
1326 break;
1327
1328 case HLUA_E_OK:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001329 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001330 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001331 break;
1332 }
1333
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001334 /* This is the main exit point, remove the Lua lock. */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001335 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001336
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001337 return ret;
1338}
1339
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001340/* This function exit the current code. */
1341__LJMP static int hlua_done(lua_State *L)
1342{
1343 struct hlua *hlua = hlua_gethlua(L);
1344
1345 hlua->flags |= HLUA_EXIT;
1346 WILL_LJMP(lua_error(L));
1347
1348 return 0;
1349}
1350
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001351/* This function is an LUA binding. It provides a function
1352 * for deleting ACL from a referenced ACL file.
1353 */
1354__LJMP static int hlua_del_acl(lua_State *L)
1355{
1356 const char *name;
1357 const char *key;
1358 struct pat_ref *ref;
1359
1360 MAY_LJMP(check_args(L, 2, "del_acl"));
1361
1362 name = MAY_LJMP(luaL_checkstring(L, 1));
1363 key = MAY_LJMP(luaL_checkstring(L, 2));
1364
1365 ref = pat_ref_lookup(name);
1366 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001367 WILL_LJMP(luaL_error(L, "'del_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001368
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001369 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001370 pat_ref_delete(ref, key);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001371 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001372 return 0;
1373}
1374
1375/* This function is an LUA binding. It provides a function
1376 * for deleting map entry from a referenced map file.
1377 */
1378static int hlua_del_map(lua_State *L)
1379{
1380 const char *name;
1381 const char *key;
1382 struct pat_ref *ref;
1383
1384 MAY_LJMP(check_args(L, 2, "del_map"));
1385
1386 name = MAY_LJMP(luaL_checkstring(L, 1));
1387 key = MAY_LJMP(luaL_checkstring(L, 2));
1388
1389 ref = pat_ref_lookup(name);
1390 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001391 WILL_LJMP(luaL_error(L, "'del_map': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001392
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001393 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001394 pat_ref_delete(ref, key);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001395 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001396 return 0;
1397}
1398
1399/* This function is an LUA binding. It provides a function
1400 * for adding ACL pattern from a referenced ACL file.
1401 */
1402static int hlua_add_acl(lua_State *L)
1403{
1404 const char *name;
1405 const char *key;
1406 struct pat_ref *ref;
1407
1408 MAY_LJMP(check_args(L, 2, "add_acl"));
1409
1410 name = MAY_LJMP(luaL_checkstring(L, 1));
1411 key = MAY_LJMP(luaL_checkstring(L, 2));
1412
1413 ref = pat_ref_lookup(name);
1414 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001415 WILL_LJMP(luaL_error(L, "'add_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001416
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001417 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001418 if (pat_ref_find_elt(ref, key) == NULL)
1419 pat_ref_add(ref, key, NULL, NULL);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001420 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001421 return 0;
1422}
1423
1424/* This function is an LUA binding. It provides a function
1425 * for setting map pattern and sample from a referenced map
1426 * file.
1427 */
1428static int hlua_set_map(lua_State *L)
1429{
1430 const char *name;
1431 const char *key;
1432 const char *value;
1433 struct pat_ref *ref;
1434
1435 MAY_LJMP(check_args(L, 3, "set_map"));
1436
1437 name = MAY_LJMP(luaL_checkstring(L, 1));
1438 key = MAY_LJMP(luaL_checkstring(L, 2));
1439 value = MAY_LJMP(luaL_checkstring(L, 3));
1440
1441 ref = pat_ref_lookup(name);
1442 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001443 WILL_LJMP(luaL_error(L, "'set_map': unknown map file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001444
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001445 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001446 if (pat_ref_find_elt(ref, key) != NULL)
1447 pat_ref_set(ref, key, value, NULL);
1448 else
1449 pat_ref_add(ref, key, value, NULL);
Christopher Faulet5cf2dfc2020-06-03 18:39:16 +02001450 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001451 return 0;
1452}
1453
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001454/* A class is a lot of memory that contain data. This data can be a table,
1455 * an integer or user data. This data is associated with a metatable. This
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001456 * metatable have an original version registered in the global context with
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001457 * the name of the object (_G[<name>] = <metable> ).
1458 *
1459 * A metable is a table that modify the standard behavior of a standard
1460 * access to the associated data. The entries of this new metatable are
1461 * defined as is:
1462 *
1463 * http://lua-users.org/wiki/MetatableEvents
1464 *
1465 * __index
1466 *
1467 * we access an absent field in a table, the result is nil. This is
1468 * true, but it is not the whole truth. Actually, such access triggers
1469 * the interpreter to look for an __index metamethod: If there is no
1470 * such method, as usually happens, then the access results in nil;
1471 * otherwise, the metamethod will provide the result.
1472 *
1473 * Control 'prototype' inheritance. When accessing "myTable[key]" and
1474 * the key does not appear in the table, but the metatable has an __index
1475 * property:
1476 *
1477 * - if the value is a function, the function is called, passing in the
1478 * table and the key; the return value of that function is returned as
1479 * the result.
1480 *
1481 * - if the value is another table, the value of the key in that table is
1482 * asked for and returned (and if it doesn't exist in that table, but that
1483 * table's metatable has an __index property, then it continues on up)
1484 *
1485 * - Use "rawget(myTable,key)" to skip this metamethod.
1486 *
1487 * http://www.lua.org/pil/13.4.1.html
1488 *
1489 * __newindex
1490 *
1491 * Like __index, but control property assignment.
1492 *
1493 * __mode - Control weak references. A string value with one or both
1494 * of the characters 'k' and 'v' which specifies that the the
1495 * keys and/or values in the table are weak references.
1496 *
1497 * __call - Treat a table like a function. When a table is followed by
1498 * parenthesis such as "myTable( 'foo' )" and the metatable has
1499 * a __call key pointing to a function, that function is invoked
1500 * (passing any specified arguments) and the return value is
1501 * returned.
1502 *
1503 * __metatable - Hide the metatable. When "getmetatable( myTable )" is
1504 * called, if the metatable for myTable has a __metatable
1505 * key, the value of that key is returned instead of the
1506 * actual metatable.
1507 *
1508 * __tostring - Control string representation. When the builtin
1509 * "tostring( myTable )" function is called, if the metatable
1510 * for myTable has a __tostring property set to a function,
1511 * that function is invoked (passing myTable to it) and the
1512 * return value is used as the string representation.
1513 *
1514 * __len - Control table length. When the table length is requested using
1515 * the length operator ( '#' ), if the metatable for myTable has
1516 * a __len key pointing to a function, that function is invoked
1517 * (passing myTable to it) and the return value used as the value
1518 * of "#myTable".
1519 *
1520 * __gc - Userdata finalizer code. When userdata is set to be garbage
1521 * collected, if the metatable has a __gc field pointing to a
1522 * function, that function is first invoked, passing the userdata
1523 * to it. The __gc metamethod is not called for tables.
1524 * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html)
1525 *
1526 * Special metamethods for redefining standard operators:
1527 * http://www.lua.org/pil/13.1.html
1528 *
1529 * __add "+"
1530 * __sub "-"
1531 * __mul "*"
1532 * __div "/"
1533 * __unm "!"
1534 * __pow "^"
1535 * __concat ".."
1536 *
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05001537 * Special methods for redefining standard relations
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001538 * http://www.lua.org/pil/13.2.html
1539 *
1540 * __eq "=="
1541 * __lt "<"
1542 * __le "<="
1543 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001544
1545/*
1546 *
1547 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001548 * Class Map
1549 *
1550 *
1551 */
1552
1553/* Returns a struct hlua_map if the stack entry "ud" is
1554 * a class session, otherwise it throws an error.
1555 */
1556__LJMP static struct map_descriptor *hlua_checkmap(lua_State *L, int ud)
1557{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001558 return MAY_LJMP(hlua_checkudata(L, ud, class_map_ref));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001559}
1560
1561/* This function is the map constructor. It don't need
1562 * the class Map object. It creates and return a new Map
1563 * object. It must be called only during "body" or "init"
1564 * context because it process some filesystem accesses.
1565 */
1566__LJMP static int hlua_map_new(struct lua_State *L)
1567{
1568 const char *fn;
1569 int match = PAT_MATCH_STR;
1570 struct sample_conv conv;
1571 const char *file = "";
1572 int line = 0;
1573 lua_Debug ar;
1574 char *err = NULL;
1575 struct arg args[2];
1576
1577 if (lua_gettop(L) < 1 || lua_gettop(L) > 2)
1578 WILL_LJMP(luaL_error(L, "'new' needs at least 1 argument."));
1579
1580 fn = MAY_LJMP(luaL_checkstring(L, 1));
1581
1582 if (lua_gettop(L) >= 2) {
1583 match = MAY_LJMP(luaL_checkinteger(L, 2));
1584 if (match < 0 || match >= PAT_MATCH_NUM)
1585 WILL_LJMP(luaL_error(L, "'new' needs a valid match method."));
1586 }
1587
1588 /* Get Lua filename and line number. */
1589 if (lua_getstack(L, 1, &ar)) { /* check function at level */
1590 lua_getinfo(L, "Sl", &ar); /* get info about it */
1591 if (ar.currentline > 0) { /* is there info? */
1592 file = ar.short_src;
1593 line = ar.currentline;
1594 }
1595 }
1596
1597 /* fill fake sample_conv struct. */
1598 conv.kw = ""; /* unused. */
1599 conv.process = NULL; /* unused. */
1600 conv.arg_mask = 0; /* unused. */
1601 conv.val_args = NULL; /* unused. */
1602 conv.out_type = SMP_T_STR;
1603 conv.private = (void *)(long)match;
1604 switch (match) {
1605 case PAT_MATCH_STR: conv.in_type = SMP_T_STR; break;
1606 case PAT_MATCH_BEG: conv.in_type = SMP_T_STR; break;
1607 case PAT_MATCH_SUB: conv.in_type = SMP_T_STR; break;
1608 case PAT_MATCH_DIR: conv.in_type = SMP_T_STR; break;
1609 case PAT_MATCH_DOM: conv.in_type = SMP_T_STR; break;
1610 case PAT_MATCH_END: conv.in_type = SMP_T_STR; break;
1611 case PAT_MATCH_REG: conv.in_type = SMP_T_STR; break;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001612 case PAT_MATCH_INT: conv.in_type = SMP_T_SINT; break;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001613 case PAT_MATCH_IP: conv.in_type = SMP_T_ADDR; break;
1614 default:
1615 WILL_LJMP(luaL_error(L, "'new' doesn't support this match mode."));
1616 }
1617
1618 /* fill fake args. */
1619 args[0].type = ARGT_STR;
Christopher Faulet73292e92020-08-06 08:40:09 +02001620 args[0].data.str.area = strdup(fn);
1621 args[0].data.str.data = strlen(fn);
1622 args[0].data.str.size = args[0].data.str.data+1;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001623 args[1].type = ARGT_STOP;
1624
1625 /* load the map. */
1626 if (!sample_load_map(args, &conv, file, line, &err)) {
1627 /* error case: we cant use luaL_error because we must
1628 * free the err variable.
1629 */
1630 luaL_where(L, 1);
1631 lua_pushfstring(L, "'new': %s.", err);
1632 lua_concat(L, 2);
1633 free(err);
Christopher Faulet6ad7df42020-08-07 11:45:18 +02001634 chunk_destroy(&args[0].data.str);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001635 WILL_LJMP(lua_error(L));
1636 }
1637
1638 /* create the lua object. */
1639 lua_newtable(L);
1640 lua_pushlightuserdata(L, args[0].data.map);
1641 lua_rawseti(L, -2, 0);
1642
1643 /* Pop a class Map metatable and affect it to the userdata. */
1644 lua_rawgeti(L, LUA_REGISTRYINDEX, class_map_ref);
1645 lua_setmetatable(L, -2);
1646
1647
1648 return 1;
1649}
1650
1651__LJMP static inline int _hlua_map_lookup(struct lua_State *L, int str)
1652{
1653 struct map_descriptor *desc;
1654 struct pattern *pat;
1655 struct sample smp;
1656
1657 MAY_LJMP(check_args(L, 2, "lookup"));
1658 desc = MAY_LJMP(hlua_checkmap(L, 1));
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001659 if (desc->pat.expect_type == SMP_T_SINT) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001660 smp.data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001661 smp.data.u.sint = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001662 }
1663 else {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001664 smp.data.type = SMP_T_STR;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001665 smp.flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001666 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 +02001667 }
1668
1669 pat = pattern_exec_match(&desc->pat, &smp, 1);
Thierry FOURNIER503bb092015-08-19 08:35:43 +02001670 if (!pat || !pat->data) {
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001671 if (str)
1672 lua_pushstring(L, "");
1673 else
1674 lua_pushnil(L);
1675 return 1;
1676 }
1677
1678 /* The Lua pattern must return a string, so we can't check the returned type */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001679 lua_pushlstring(L, pat->data->u.str.area, pat->data->u.str.data);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001680 return 1;
1681}
1682
1683__LJMP static int hlua_map_lookup(struct lua_State *L)
1684{
1685 return _hlua_map_lookup(L, 0);
1686}
1687
1688__LJMP static int hlua_map_slookup(struct lua_State *L)
1689{
1690 return _hlua_map_lookup(L, 1);
1691}
1692
1693/*
1694 *
1695 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001696 * Class Socket
1697 *
1698 *
1699 */
1700
1701__LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud)
1702{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001703 return MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001704}
1705
1706/* This function is the handler called for each I/O on the established
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001707 * connection. It is used for notify space available to send or data
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001708 * received.
1709 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001710static void hlua_socket_handler(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001711{
Willy Tarreau00a37f02015-04-13 12:05:19 +02001712 struct stream_interface *si = appctx->owner;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001713
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001714 if (appctx->ctx.hlua_cosocket.die) {
1715 si_shutw(si);
1716 si_shutr(si);
1717 si_ic(si)->flags |= CF_READ_NULL;
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001718 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1719 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001720 stream_shutdown(si_strm(si), SF_ERR_KILLED);
1721 }
1722
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001723 /* If we cant write, wakeup the pending write signals. */
1724 if (channel_output_closed(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001725 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001726
1727 /* If we cant read, wakeup the pending read signals. */
1728 if (channel_input_closed(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001729 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001730
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02001731 /* if the connection is not established, inform the stream that we want
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001732 * to be notified whenever the connection completes.
1733 */
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02001734 if (si_opposite(si)->state < SI_ST_EST) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001735 si_cant_get(si);
Willy Tarreau12c24232018-12-06 15:29:50 +01001736 si_rx_conn_blk(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01001737 si_rx_endp_more(si);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001738 return;
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001739 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001740
1741 /* This function is called after the connect. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001742 appctx->ctx.hlua_cosocket.connected = 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001743
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001744 /* Wake the tasks which wants to write if the buffer have available space. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001745 if (channel_may_recv(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001746 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001747
1748 /* Wake the tasks which wants to read if the buffer contains data. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001749 if (!channel_is_empty(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001750 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001751
1752 /* Some data were injected in the buffer, notify the stream
1753 * interface.
1754 */
1755 if (!channel_is_empty(si_ic(si)))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001756 si_update(si);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001757
1758 /* If write notifications are registered, we considers we want
Willy Tarreau3367d412018-11-15 10:57:41 +01001759 * to write, so we clear the blocking flag.
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001760 */
1761 if (notification_registered(&appctx->ctx.hlua_cosocket.wake_on_write))
Willy Tarreau3367d412018-11-15 10:57:41 +01001762 si_rx_endp_more(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001763}
1764
Willy Tarreau87b09662015-04-03 00:22:06 +02001765/* This function is called when the "struct stream" is destroyed.
1766 * Remove the link from the object to this stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001767 * Wake all the pending signals.
1768 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001769static void hlua_socket_release(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001770{
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001771 struct xref *peer;
1772
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001773 /* Remove my link in the original object. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001774 peer = xref_get_peer_and_lock(&appctx->ctx.hlua_cosocket.xref);
1775 if (peer)
1776 xref_disconnect(&appctx->ctx.hlua_cosocket.xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001777
1778 /* Wake all the task waiting for me. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001779 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1780 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001781}
1782
1783/* If the garbage collectio of the object is launch, nobody
Willy Tarreau87b09662015-04-03 00:22:06 +02001784 * uses this object. If the stream does not exists, just quit.
1785 * Send the shutdown signal to the stream. In some cases,
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001786 * pending signal can rest in the read and write lists. destroy
1787 * it.
1788 */
1789__LJMP static int hlua_socket_gc(lua_State *L)
1790{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001791 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001792 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001793 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001794
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001795 MAY_LJMP(check_args(L, 1, "__gc"));
1796
1797 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001798 peer = xref_get_peer_and_lock(&socket->xref);
1799 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001800 return 0;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001801 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001802
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001803 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001804 appctx->ctx.hlua_cosocket.die = 1;
1805 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001806
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001807 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001808 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001809 return 0;
1810}
1811
1812/* The close function send shutdown signal and break the
Willy Tarreau87b09662015-04-03 00:22:06 +02001813 * links between the stream and the object.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001814 */
sada05ed3302018-05-11 11:48:18 -07001815__LJMP static int hlua_socket_close_helper(lua_State *L)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001816{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001817 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001818 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001819 struct xref *peer;
Willy Tarreauf31af932020-01-14 09:59:38 +01001820 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001821
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001822 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001823
1824 /* Check if we run on the same thread than the xreator thread.
1825 * We cannot access to the socket if the thread is different.
1826 */
1827 if (socket->tid != tid)
1828 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1829
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001830 peer = xref_get_peer_and_lock(&socket->xref);
1831 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001832 return 0;
Willy Tarreauf31af932020-01-14 09:59:38 +01001833
1834 hlua->gc_count--;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001835 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001836
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001837 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001838 appctx->ctx.hlua_cosocket.die = 1;
1839 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001840
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001841 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001842 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001843 return 0;
1844}
1845
sada05ed3302018-05-11 11:48:18 -07001846/* The close function calls close_helper.
1847 */
1848__LJMP static int hlua_socket_close(lua_State *L)
1849{
1850 MAY_LJMP(check_args(L, 1, "close"));
1851 return hlua_socket_close_helper(L);
1852}
1853
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001854/* This Lua function assumes that the stack contain three parameters.
1855 * 1 - USERDATA containing a struct socket
1856 * 2 - INTEGER with values of the macro defined below
1857 * If the integer is -1, we must read at most one line.
1858 * If the integer is -2, we ust read all the data until the
1859 * end of the stream.
1860 * If the integer is positive value, we must read a number of
1861 * bytes corresponding to this value.
1862 */
1863#define HLSR_READ_LINE (-1)
1864#define HLSR_READ_ALL (-2)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001865__LJMP static int hlua_socket_receive_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001866{
1867 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
1868 int wanted = lua_tointeger(L, 2);
1869 struct hlua *hlua = hlua_gethlua(L);
1870 struct appctx *appctx;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001871 size_t len;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001872 int nblk;
Willy Tarreau206ba832018-06-14 15:27:31 +02001873 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001874 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02001875 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001876 size_t len2;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001877 int skip_at_end = 0;
Willy Tarreau81389672015-03-10 12:03:52 +01001878 struct channel *oc;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001879 struct stream_interface *si;
1880 struct stream *s;
1881 struct xref *peer;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001882 int missing_bytes;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001883
1884 /* Check if this lua stack is schedulable. */
1885 if (!hlua || !hlua->task)
1886 WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in "
1887 "'frontend', 'backend' or 'task'"));
1888
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001889 /* Check if we run on the same thread than the xreator thread.
1890 * We cannot access to the socket if the thread is different.
1891 */
1892 if (socket->tid != tid)
1893 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1894
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001895 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001896 peer = xref_get_peer_and_lock(&socket->xref);
1897 if (!peer)
1898 goto no_peer;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001899 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
1900 si = appctx->owner;
1901 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001902
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001903 oc = &s->res;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001904 if (wanted == HLSR_READ_LINE) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001905 /* Read line. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001906 nblk = co_getline_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001907 if (nblk < 0) /* Connection close. */
1908 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001909 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001910 goto connection_empty;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001911
1912 /* remove final \r\n. */
1913 if (nblk == 1) {
1914 if (blk1[len1-1] == '\n') {
1915 len1--;
1916 skip_at_end++;
1917 if (blk1[len1-1] == '\r') {
1918 len1--;
1919 skip_at_end++;
1920 }
1921 }
1922 }
1923 else {
1924 if (blk2[len2-1] == '\n') {
1925 len2--;
1926 skip_at_end++;
1927 if (blk2[len2-1] == '\r') {
1928 len2--;
1929 skip_at_end++;
1930 }
1931 }
1932 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001933 }
1934
1935 else if (wanted == HLSR_READ_ALL) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001936 /* Read all the available data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001937 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001938 if (nblk < 0) /* Connection close. */
1939 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001940 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001941 goto connection_empty;
1942 }
1943
1944 else {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001945 /* Read a block of data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001946 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001947 if (nblk < 0) /* Connection close. */
1948 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001949 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001950 goto connection_empty;
1951
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001952 missing_bytes = wanted - socket->b.n;
1953 if (len1 > missing_bytes) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001954 nblk = 1;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001955 len1 = missing_bytes;
1956 } if (nblk == 2 && len1 + len2 > missing_bytes)
1957 len2 = missing_bytes - len1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001958 }
1959
1960 len = len1;
1961
1962 luaL_addlstring(&socket->b, blk1, len1);
1963 if (nblk == 2) {
1964 len += len2;
1965 luaL_addlstring(&socket->b, blk2, len2);
1966 }
1967
1968 /* Consume data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001969 co_skip(oc, len + skip_at_end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001970
1971 /* Don't wait anything. */
Thierry FOURNIER7e4ee472018-05-25 15:03:50 +02001972 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001973
1974 /* If the pattern reclaim to read all the data
1975 * in the connection, got out.
1976 */
1977 if (wanted == HLSR_READ_ALL)
1978 goto connection_empty;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001979 else if (wanted >= 0 && socket->b.n < wanted)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001980 goto connection_empty;
1981
1982 /* Return result. */
1983 luaL_pushresult(&socket->b);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001984 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001985 return 1;
1986
1987connection_closed:
1988
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001989 xref_unlock(&socket->xref, peer);
1990
1991no_peer:
1992
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001993 /* If the buffer containds data. */
1994 if (socket->b.n > 0) {
1995 luaL_pushresult(&socket->b);
1996 return 1;
1997 }
1998 lua_pushnil(L);
1999 lua_pushstring(L, "connection closed.");
2000 return 2;
2001
2002connection_empty:
2003
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002004 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_read, hlua->task)) {
2005 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002006 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002007 }
2008 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002009 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_receive_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002010 return 0;
2011}
2012
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002013/* This Lua function gets two parameters. The first one can be string
2014 * or a number. If the string is "*l", the user requires one line. If
2015 * the string is "*a", the user requires all the contents of the stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002016 * If the value is a number, the user require a number of bytes equal
2017 * to the value. The default value is "*l" (a line).
2018 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002019 * This parameter with a variable type is converted in integer. This
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002020 * integer takes this values:
2021 * -1 : read a line
2022 * -2 : read all the stream
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002023 * >0 : amount of bytes.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002024 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002025 * The second parameter is optional. It contains a string that must be
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002026 * concatenated with the read data.
2027 */
2028__LJMP static int hlua_socket_receive(struct lua_State *L)
2029{
2030 int wanted = HLSR_READ_LINE;
2031 const char *pattern;
2032 int type;
2033 char *error;
2034 size_t len;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002035 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002036
2037 if (lua_gettop(L) < 1 || lua_gettop(L) > 3)
2038 WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments."));
2039
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002040 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002041
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002042 /* Check if we run on the same thread than the xreator thread.
2043 * We cannot access to the socket if the thread is different.
2044 */
2045 if (socket->tid != tid)
2046 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2047
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002048 /* check for pattern. */
2049 if (lua_gettop(L) >= 2) {
2050 type = lua_type(L, 2);
2051 if (type == LUA_TSTRING) {
2052 pattern = lua_tostring(L, 2);
2053 if (strcmp(pattern, "*a") == 0)
2054 wanted = HLSR_READ_ALL;
2055 else if (strcmp(pattern, "*l") == 0)
2056 wanted = HLSR_READ_LINE;
2057 else {
2058 wanted = strtoll(pattern, &error, 10);
2059 if (*error != '\0')
2060 WILL_LJMP(luaL_error(L, "Unsupported pattern."));
2061 }
2062 }
2063 else if (type == LUA_TNUMBER) {
2064 wanted = lua_tointeger(L, 2);
2065 if (wanted < 0)
2066 WILL_LJMP(luaL_error(L, "Unsupported size."));
2067 }
2068 }
2069
2070 /* Set pattern. */
2071 lua_pushinteger(L, wanted);
Tim Duesterhusc6e377e2018-01-04 19:32:13 +01002072
2073 /* Check if we would replace the top by itself. */
2074 if (lua_gettop(L) != 2)
2075 lua_replace(L, 2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002076
Tim Duesterhusb33754c2018-01-04 19:32:14 +01002077 /* init buffer, and fill it with prefix. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002078 luaL_buffinit(L, &socket->b);
2079
2080 /* Check prefix. */
2081 if (lua_gettop(L) >= 3) {
2082 if (lua_type(L, 3) != LUA_TSTRING)
2083 WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix"));
2084 pattern = lua_tolstring(L, 3, &len);
2085 luaL_addlstring(&socket->b, pattern, len);
2086 }
2087
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002088 return __LJMP(hlua_socket_receive_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002089}
2090
2091/* Write the Lua input string in the output buffer.
Mark Lakes22154b42018-01-29 14:38:40 -08002092 * This function returns a yield if no space is available.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002093 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002094static int hlua_socket_write_yield(struct lua_State *L,int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002095{
2096 struct hlua_socket *socket;
2097 struct hlua *hlua = hlua_gethlua(L);
2098 struct appctx *appctx;
2099 size_t buf_len;
2100 const char *buf;
2101 int len;
2102 int send_len;
2103 int sent;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002104 struct xref *peer;
2105 struct stream_interface *si;
2106 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002107
2108 /* Check if this lua stack is schedulable. */
2109 if (!hlua || !hlua->task)
2110 WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in "
2111 "'frontend', 'backend' or 'task'"));
2112
2113 /* Get object */
2114 socket = MAY_LJMP(hlua_checksocket(L, 1));
2115 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002116 sent = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002117
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002118 /* Check if we run on the same thread than the xreator thread.
2119 * We cannot access to the socket if the thread is different.
2120 */
2121 if (socket->tid != tid)
2122 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2123
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002124 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002125 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002126 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002127 lua_pushinteger(L, -1);
2128 return 1;
2129 }
2130 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2131 si = appctx->owner;
2132 s = si_strm(si);
2133
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002134 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002135 if (channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002136 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002137 lua_pushinteger(L, -1);
2138 return 1;
2139 }
2140
2141 /* Update the input buffer data. */
2142 buf += sent;
2143 send_len = buf_len - sent;
2144
2145 /* All the data are sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002146 if (sent >= buf_len) {
2147 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002148 return 1; /* Implicitly return the length sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002149 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002150
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002151 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002152 * the request buffer if its not required.
2153 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002154 if (s->req.buf.size == 0) {
Willy Tarreau581abd32018-10-25 10:21:41 +02002155 if (!si_alloc_ibuf(si, &appctx->buffer_wait))
Christopher Faulet33834b12016-12-19 09:29:06 +01002156 goto hlua_socket_write_yield_return;
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002157 }
2158
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002159 /* Check for available space. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002160 len = b_room(&s->req.buf);
Christopher Faulet33834b12016-12-19 09:29:06 +01002161 if (len <= 0) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002162 goto hlua_socket_write_yield_return;
Christopher Faulet33834b12016-12-19 09:29:06 +01002163 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002164
2165 /* send data */
2166 if (len < send_len)
2167 send_len = len;
Thierry FOURNIER66b89192018-05-27 01:14:47 +02002168 len = ci_putblk(&s->req, buf, send_len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002169
2170 /* "Not enough space" (-1), "Buffer too little to contain
2171 * the data" (-2) are not expected because the available length
2172 * is tested.
2173 * Other unknown error are also not expected.
2174 */
2175 if (len <= 0) {
Willy Tarreaubc18da12015-03-13 14:00:47 +01002176 if (len == -1)
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002177 s->req.flags |= CF_WAKE_WRITE;
Willy Tarreaubc18da12015-03-13 14:00:47 +01002178
sada05ed3302018-05-11 11:48:18 -07002179 MAY_LJMP(hlua_socket_close_helper(L));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002180 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002181 lua_pushinteger(L, -1);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002182 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002183 return 1;
2184 }
2185
2186 /* update buffers. */
Thierry FOURNIER101b9762018-05-27 01:27:40 +02002187 appctx_wakeup(appctx);
Willy Tarreaude70fa12015-09-26 11:25:05 +02002188
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002189 s->req.rex = TICK_ETERNITY;
2190 s->res.wex = TICK_ETERNITY;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002191
2192 /* Update length sent. */
2193 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002194 lua_pushinteger(L, sent + len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002195
2196 /* All the data buffer is sent ? */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002197 if (sent + len >= buf_len) {
2198 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002199 return 1;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002200 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002201
2202hlua_socket_write_yield_return:
Thierry FOURNIERba42fcd2018-05-27 00:59:48 +02002203 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2204 xref_unlock(&socket->xref, peer);
2205 WILL_LJMP(luaL_error(L, "out of memory"));
2206 }
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002207 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002208 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_write_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002209 return 0;
2210}
2211
2212/* This function initiate the send of data. It just check the input
2213 * parameters and push an integer in the Lua stack that contain the
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002214 * amount of data written to the buffer. This is used by the function
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002215 * "hlua_socket_write_yield" that can yield.
2216 *
2217 * The Lua function gets between 3 and 4 parameters. The first one is
2218 * the associated object. The second is a string buffer. The third is
2219 * a facultative integer that represents where is the buffer position
2220 * of the start of the data that can send. The first byte is the
2221 * position "1". The default value is "1". The fourth argument is a
2222 * facultative integer that represents where is the buffer position
2223 * of the end of the data that can send. The default is the last byte.
2224 */
2225static int hlua_socket_send(struct lua_State *L)
2226{
2227 int i;
2228 int j;
2229 const char *buf;
2230 size_t buf_len;
2231
2232 /* Check number of arguments. */
2233 if (lua_gettop(L) < 2 || lua_gettop(L) > 4)
2234 WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments"));
2235
2236 /* Get the string. */
2237 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
2238
2239 /* Get and check j. */
2240 if (lua_gettop(L) == 4) {
2241 j = MAY_LJMP(luaL_checkinteger(L, 4));
2242 if (j < 0)
2243 j = buf_len + j + 1;
2244 if (j > buf_len)
2245 j = buf_len + 1;
2246 lua_pop(L, 1);
2247 }
2248 else
2249 j = buf_len;
2250
2251 /* Get and check i. */
2252 if (lua_gettop(L) == 3) {
2253 i = MAY_LJMP(luaL_checkinteger(L, 3));
2254 if (i < 0)
2255 i = buf_len + i + 1;
2256 if (i > buf_len)
2257 i = buf_len + 1;
2258 lua_pop(L, 1);
2259 } else
2260 i = 1;
2261
2262 /* Check bth i and j. */
2263 if (i > j) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002264 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002265 return 1;
2266 }
2267 if (i == 0 && j == 0) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002268 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002269 return 1;
2270 }
2271 if (i == 0)
2272 i = 1;
2273 if (j == 0)
2274 j = 1;
2275
2276 /* Pop the string. */
2277 lua_pop(L, 1);
2278
2279 /* Update the buffer length. */
2280 buf += i - 1;
2281 buf_len = j - i + 1;
2282 lua_pushlstring(L, buf, buf_len);
2283
2284 /* This unsigned is used to remember the amount of sent data. */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002285 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002286
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002287 return MAY_LJMP(hlua_socket_write_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002288}
2289
Willy Tarreau22b0a682015-06-17 19:43:49 +02002290#define SOCKET_INFO_MAX_LEN sizeof("[0000:0000:0000:0000:0000:0000:0000:0000]:12345")
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002291__LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr)
2292{
2293 static char buffer[SOCKET_INFO_MAX_LEN];
2294 int ret;
2295 int len;
2296 char *p;
2297
2298 ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1);
2299 if (ret <= 0) {
2300 lua_pushnil(L);
2301 return 1;
2302 }
2303
2304 if (ret == AF_UNIX) {
2305 lua_pushstring(L, buffer+1);
2306 return 1;
2307 }
2308 else if (ret == AF_INET6) {
2309 buffer[0] = '[';
2310 len = strlen(buffer);
2311 buffer[len] = ']';
2312 len++;
2313 buffer[len] = ':';
2314 len++;
2315 p = buffer;
2316 }
2317 else if (ret == AF_INET) {
2318 p = buffer + 1;
2319 len = strlen(p);
2320 p[len] = ':';
2321 len++;
2322 }
2323 else {
2324 lua_pushnil(L);
2325 return 1;
2326 }
2327
2328 if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) {
2329 lua_pushnil(L);
2330 return 1;
2331 }
2332
2333 lua_pushstring(L, p);
2334 return 1;
2335}
2336
2337/* Returns information about the peer of the connection. */
2338__LJMP static int hlua_socket_getpeername(struct lua_State *L)
2339{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002340 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002341 struct xref *peer;
2342 struct appctx *appctx;
2343 struct stream_interface *si;
2344 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002345 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002346
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002347 MAY_LJMP(check_args(L, 1, "getpeername"));
2348
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002349 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002350
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002351 /* Check if we run on the same thread than the xreator thread.
2352 * We cannot access to the socket if the thread is different.
2353 */
2354 if (socket->tid != tid)
2355 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2356
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002357 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002358 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002359 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002360 lua_pushnil(L);
2361 return 1;
2362 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002363 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2364 si = appctx->owner;
2365 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002366
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002367 if (!s->target_addr) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002368 xref_unlock(&socket->xref, peer);
Willy Tarreaua71f6422016-11-16 17:00:14 +01002369 lua_pushnil(L);
2370 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002371 }
2372
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002373 ret = MAY_LJMP(hlua_socket_info(L, s->target_addr));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002374 xref_unlock(&socket->xref, peer);
2375 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002376}
2377
2378/* Returns information about my connection side. */
2379static int hlua_socket_getsockname(struct lua_State *L)
2380{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002381 struct hlua_socket *socket;
2382 struct connection *conn;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002383 struct appctx *appctx;
2384 struct xref *peer;
2385 struct stream_interface *si;
2386 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002387 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002388
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002389 MAY_LJMP(check_args(L, 1, "getsockname"));
2390
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002391 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002392
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002393 /* Check if we run on the same thread than the xreator thread.
2394 * We cannot access to the socket if the thread is different.
2395 */
2396 if (socket->tid != tid)
2397 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2398
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002399 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002400 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002401 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002402 lua_pushnil(L);
2403 return 1;
2404 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002405 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2406 si = appctx->owner;
2407 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002408
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002409 conn = cs_conn(objt_cs(s->si[1].end));
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002410 if (!conn || !conn_get_src(conn)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002411 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002412 lua_pushnil(L);
2413 return 1;
2414 }
2415
Willy Tarreau9da9a6f2019-07-17 14:49:44 +02002416 ret = hlua_socket_info(L, conn->src);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002417 xref_unlock(&socket->xref, peer);
2418 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002419}
2420
2421/* This struct define the applet. */
Willy Tarreau30576452015-04-13 13:50:30 +02002422static struct applet update_applet = {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002423 .obj_type = OBJ_TYPE_APPLET,
2424 .name = "<LUA_TCP>",
2425 .fct = hlua_socket_handler,
2426 .release = hlua_socket_release,
2427};
2428
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002429__LJMP static int hlua_socket_connect_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002430{
2431 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
2432 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002433 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002434 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002435 struct stream_interface *si;
2436 struct stream *s;
2437
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002438 /* Check if we run on the same thread than the xreator thread.
2439 * We cannot access to the socket if the thread is different.
2440 */
2441 if (socket->tid != tid)
2442 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2443
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002444 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002445 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002446 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002447 lua_pushnil(L);
2448 lua_pushstring(L, "Can't connect");
2449 return 2;
2450 }
2451 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2452 si = appctx->owner;
2453 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002454
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002455 /* Check if we run on the same thread than the xreator thread.
2456 * We cannot access to the socket if the thread is different.
2457 */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002458 if (socket->tid != tid) {
2459 xref_unlock(&socket->xref, peer);
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002460 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002461 }
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002462
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002463 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002464 if (!hlua || channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002465 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002466 lua_pushnil(L);
2467 lua_pushstring(L, "Can't connect");
2468 return 2;
2469 }
2470
Willy Tarreaue09101e2018-10-16 17:37:12 +02002471 appctx = __objt_appctx(s->si[0].end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002472
2473 /* Check for connection established. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002474 if (appctx->ctx.hlua_cosocket.connected) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002475 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002476 lua_pushinteger(L, 1);
2477 return 1;
2478 }
2479
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002480 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2481 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002482 WILL_LJMP(luaL_error(L, "out of memory error"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002483 }
2484 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002485 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002486 return 0;
2487}
2488
2489/* This function fail or initite the connection. */
2490__LJMP static int hlua_socket_connect(struct lua_State *L)
2491{
2492 struct hlua_socket *socket;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002493 int port = -1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002494 const char *ip;
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002495 struct hlua *hlua;
2496 struct appctx *appctx;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002497 int low, high;
2498 struct sockaddr_storage *addr;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002499 struct xref *peer;
2500 struct stream_interface *si;
2501 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002502
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002503 if (lua_gettop(L) < 2)
2504 WILL_LJMP(luaL_error(L, "connect: need at least 2 arguments"));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002505
2506 /* Get args. */
2507 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002508
2509 /* Check if we run on the same thread than the xreator thread.
2510 * We cannot access to the socket if the thread is different.
2511 */
2512 if (socket->tid != tid)
2513 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2514
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002515 ip = MAY_LJMP(luaL_checkstring(L, 2));
Tim Duesterhus6edab862018-01-06 19:04:45 +01002516 if (lua_gettop(L) >= 3) {
2517 luaL_Buffer b;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002518 port = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002519
Tim Duesterhus6edab862018-01-06 19:04:45 +01002520 /* Force the ip to end with a colon, to support IPv6 addresses
2521 * that are not enclosed within square brackets.
2522 */
2523 if (port > 0) {
2524 luaL_buffinit(L, &b);
2525 luaL_addstring(&b, ip);
2526 luaL_addchar(&b, ':');
2527 luaL_pushresult(&b);
2528 ip = lua_tolstring(L, lua_gettop(L), NULL);
2529 }
2530 }
2531
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002532 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002533 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002534 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002535 lua_pushnil(L);
2536 return 1;
2537 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002538
2539 /* Parse ip address. */
Willy Tarreau5fc93282020-09-16 18:25:03 +02002540 addr = str2sa_range(ip, NULL, &low, &high, NULL, NULL, NULL, NULL, NULL, PA_O_PORT_OK | PA_O_STREAM);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002541 if (!addr) {
2542 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002543 WILL_LJMP(luaL_error(L, "connect: cannot parse destination address '%s'", ip));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002544 }
Willy Tarreau9da9a6f2019-07-17 14:49:44 +02002545
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002546 /* Set port. */
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002547 if (low == 0) {
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002548 if (addr->ss_family == AF_INET) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002549 if (port == -1) {
2550 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002551 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002552 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002553 ((struct sockaddr_in *)addr)->sin_port = htons(port);
2554 } else if (addr->ss_family == AF_INET6) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002555 if (port == -1) {
2556 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002557 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002558 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002559 ((struct sockaddr_in6 *)addr)->sin6_port = htons(port);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002560 }
2561 }
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002562
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002563 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2564 si = appctx->owner;
2565 s = si_strm(si);
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002566
Willy Tarreau9b7587a2020-10-15 07:32:10 +02002567 if (!sockaddr_alloc(&s->target_addr, addr, sizeof(*addr))) {
Willy Tarreau1c8d32b2019-07-18 15:47:45 +02002568 xref_unlock(&socket->xref, peer);
2569 WILL_LJMP(luaL_error(L, "connect: internal error"));
2570 }
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002571 s->flags |= SF_ADDR_SET;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002572
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002573 hlua = hlua_gethlua(L);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002574
2575 /* inform the stream that we want to be notified whenever the
2576 * connection completes.
2577 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01002578 si_cant_get(&s->si[0]);
Willy Tarreau3367d412018-11-15 10:57:41 +01002579 si_rx_endp_more(&s->si[0]);
Thierry FOURNIER8c8fbbe2015-09-26 17:02:35 +02002580 appctx_wakeup(appctx);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002581
Willy Tarreauf31af932020-01-14 09:59:38 +01002582 hlua->gc_count++;
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02002583
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002584 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2585 xref_unlock(&socket->xref, peer);
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002586 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002587 }
2588 xref_unlock(&socket->xref, peer);
PiBa-NL706d5ee2018-05-05 23:51:42 +02002589
2590 task_wakeup(s->task, TASK_WOKEN_INIT);
2591 /* Return yield waiting for connection. */
2592
Willy Tarreau9635e032018-10-16 17:52:55 +02002593 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002594
2595 return 0;
2596}
2597
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002598#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002599__LJMP static int hlua_socket_connect_ssl(struct lua_State *L)
2600{
2601 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002602 struct xref *peer;
2603 struct appctx *appctx;
2604 struct stream_interface *si;
2605 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002606
2607 MAY_LJMP(check_args(L, 3, "connect_ssl"));
2608 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002609
2610 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002611 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002612 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002613 lua_pushnil(L);
2614 return 1;
2615 }
2616 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2617 si = appctx->owner;
2618 s = si_strm(si);
2619
2620 s->target = &socket_ssl.obj_type;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002621 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002622 return MAY_LJMP(hlua_socket_connect(L));
2623}
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002624#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002625
2626__LJMP static int hlua_socket_setoption(struct lua_State *L)
2627{
2628 return 0;
2629}
2630
2631__LJMP static int hlua_socket_settimeout(struct lua_State *L)
2632{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002633 struct hlua_socket *socket;
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002634 int tmout;
Mark Lakes56cc1252018-03-27 09:48:06 +02002635 double dtmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002636 struct xref *peer;
2637 struct appctx *appctx;
2638 struct stream_interface *si;
2639 struct stream *s;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002640
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002641 MAY_LJMP(check_args(L, 2, "settimeout"));
2642
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002643 socket = MAY_LJMP(hlua_checksocket(L, 1));
Mark Lakes56cc1252018-03-27 09:48:06 +02002644
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002645 /* convert the timeout to millis */
2646 dtmout = MAY_LJMP(luaL_checknumber(L, 2)) * 1000;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002647
Thierry Fournier17a921b2018-03-08 09:59:02 +01002648 /* Check for negative values */
Mark Lakes56cc1252018-03-27 09:48:06 +02002649 if (dtmout < 0)
Thierry Fournier17a921b2018-03-08 09:59:02 +01002650 WILL_LJMP(luaL_error(L, "settimeout: cannot set negatives values"));
2651
Mark Lakes56cc1252018-03-27 09:48:06 +02002652 if (dtmout > INT_MAX) /* overflow check */
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002653 WILL_LJMP(luaL_error(L, "settimeout: cannot set values larger than %d ms", INT_MAX));
Mark Lakes56cc1252018-03-27 09:48:06 +02002654
2655 tmout = MS_TO_TICKS((int)dtmout);
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002656 if (tmout == 0)
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05002657 tmout++; /* very small timeouts are adjusted to a minimum of 1ms */
Mark Lakes56cc1252018-03-27 09:48:06 +02002658
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002659 /* Check if we run on the same thread than the xreator thread.
2660 * We cannot access to the socket if the thread is different.
2661 */
2662 if (socket->tid != tid)
2663 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2664
Mark Lakes56cc1252018-03-27 09:48:06 +02002665 /* check for connection break. If some data were read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002666 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002667 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002668 hlua_pusherror(L, "socket: not yet initialised, you can't set timeouts.");
2669 WILL_LJMP(lua_error(L));
2670 return 0;
2671 }
2672 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2673 si = appctx->owner;
2674 s = si_strm(si);
2675
Cyril Bonté7bb63452018-08-17 23:51:02 +02002676 s->sess->fe->timeout.connect = tmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002677 s->req.rto = tmout;
2678 s->req.wto = tmout;
2679 s->res.rto = tmout;
2680 s->res.wto = tmout;
Cyril Bonté7bb63452018-08-17 23:51:02 +02002681 s->req.rex = tick_add_ifset(now_ms, tmout);
2682 s->req.wex = tick_add_ifset(now_ms, tmout);
2683 s->res.rex = tick_add_ifset(now_ms, tmout);
2684 s->res.wex = tick_add_ifset(now_ms, tmout);
2685
2686 s->task->expire = tick_add_ifset(now_ms, tmout);
2687 task_queue(s->task);
2688
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002689 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002690
Thierry Fourniere9636f12018-03-08 09:54:32 +01002691 lua_pushinteger(L, 1);
Tim Duesterhus119a5f12018-01-06 19:16:25 +01002692 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002693}
2694
2695__LJMP static int hlua_socket_new(lua_State *L)
2696{
2697 struct hlua_socket *socket;
2698 struct appctx *appctx;
Willy Tarreau15b5e142015-04-04 14:38:25 +02002699 struct session *sess;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002700 struct stream *strm;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002701
2702 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002703 if (!lua_checkstack(L, 3)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002704 hlua_pusherror(L, "socket: full stack");
2705 goto out_fail_conf;
2706 }
2707
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002708 /* Create the object: obj[0] = userdata. */
2709 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002710 socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket)));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002711 lua_rawseti(L, -2, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002712 memset(socket, 0, sizeof(*socket));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002713 socket->tid = tid;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002714
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05002715 /* Check if the various memory pools are initialized. */
Willy Tarreaubafbe012017-11-24 17:34:44 +01002716 if (!pool_head_stream || !pool_head_buffer) {
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002717 hlua_pusherror(L, "socket: uninitialized pools.");
2718 goto out_fail_conf;
2719 }
2720
Willy Tarreau87b09662015-04-03 00:22:06 +02002721 /* Pop a class stream metatable and affect it to the userdata. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002722 lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref);
2723 lua_setmetatable(L, -2);
2724
Willy Tarreaud420a972015-04-06 00:39:18 +02002725 /* Create the applet context */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01002726 appctx = appctx_new(&update_applet, tid_bit);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002727 if (!appctx) {
2728 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaufeb76402015-04-03 14:10:06 +02002729 goto out_fail_conf;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002730 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002731
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002732 appctx->ctx.hlua_cosocket.connected = 0;
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02002733 appctx->ctx.hlua_cosocket.die = 0;
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002734 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_write);
2735 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_read);
Willy Tarreaub2bf8332015-04-04 15:58:58 +02002736
Willy Tarreaud420a972015-04-06 00:39:18 +02002737 /* Now create a session, task and stream for this applet */
2738 sess = session_new(&socket_proxy, NULL, &appctx->obj_type);
2739 if (!sess) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002740 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002741 goto out_fail_sess;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002742 }
2743
Willy Tarreau87787ac2017-08-28 16:22:54 +02002744 strm = stream_new(sess, &appctx->obj_type);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002745 if (!strm) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002746 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002747 goto out_fail_stream;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002748 }
2749
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002750 /* Initialise cross reference between stream and Lua socket object. */
2751 xref_create(&socket->xref, &appctx->ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002752
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002753 /* Configure "right" stream interface. this "si" is used to connect
2754 * and retrieve data from the server. The connection is initialized
2755 * with the "struct server".
2756 */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002757 si_set_state(&strm->si[1], SI_ST_ASS);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002758
2759 /* Force destination server. */
Willy Tarreau5a0b25d2019-07-18 18:01:14 +02002760 strm->flags |= SF_DIRECT | SF_ASSIGNED | SF_BE_ASSIGNED;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002761 strm->target = &socket_tcp.obj_type;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002762
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002763 return 1;
2764
Willy Tarreaud420a972015-04-06 00:39:18 +02002765 out_fail_stream:
Willy Tarreau11c36242015-04-04 15:54:03 +02002766 session_free(sess);
Willy Tarreaud420a972015-04-06 00:39:18 +02002767 out_fail_sess:
2768 appctx_free(appctx);
2769 out_fail_conf:
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002770 WILL_LJMP(lua_error(L));
2771 return 0;
2772}
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01002773
2774/*
2775 *
2776 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002777 * Class Channel
2778 *
2779 *
2780 */
2781
2782/* Returns the struct hlua_channel join to the class channel in the
2783 * stack entry "ud" or throws an argument error.
2784 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002785__LJMP static struct channel *hlua_checkchannel(lua_State *L, int ud)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002786{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002787 return MAY_LJMP(hlua_checkudata(L, ud, class_channel_ref));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002788}
2789
Willy Tarreau47860ed2015-03-10 14:07:50 +01002790/* Pushes the channel onto the top of the stack. If the stask does not have a
2791 * free slots, the function fails and returns 0;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002792 */
Willy Tarreau2a71af42015-03-10 13:51:50 +01002793static int hlua_channel_new(lua_State *L, struct channel *channel)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002794{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002795 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002796 if (!lua_checkstack(L, 3))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002797 return 0;
2798
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002799 lua_newtable(L);
Willy Tarreau47860ed2015-03-10 14:07:50 +01002800 lua_pushlightuserdata(L, channel);
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002801 lua_rawseti(L, -2, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002802
2803 /* Pop a class sesison metatable and affect it to the userdata. */
2804 lua_rawgeti(L, LUA_REGISTRYINDEX, class_channel_ref);
2805 lua_setmetatable(L, -2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002806 return 1;
2807}
2808
2809/* Duplicate all the data present in the input channel and put it
2810 * in a string LUA variables. Returns -1 and push a nil value in
2811 * the stack if the channel is closed and all the data are consumed,
2812 * returns 0 if no data are available, otherwise it returns the length
Ilya Shipitsind4259502020-04-08 01:07:56 +05002813 * of the built string.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002814 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002815static inline int _hlua_channel_dup(struct channel *chn, lua_State *L)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002816{
2817 char *blk1;
2818 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002819 size_t len1;
2820 size_t len2;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002821 int ret;
2822 luaL_Buffer b;
2823
Willy Tarreau06d80a92017-10-19 14:32:15 +02002824 ret = ci_getblk_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002825 if (unlikely(ret == 0))
2826 return 0;
2827
2828 if (unlikely(ret < 0)) {
2829 lua_pushnil(L);
2830 return -1;
2831 }
2832
2833 luaL_buffinit(L, &b);
2834 luaL_addlstring(&b, blk1, len1);
2835 if (unlikely(ret == 2))
2836 luaL_addlstring(&b, blk2, len2);
2837 luaL_pushresult(&b);
2838
2839 if (unlikely(ret == 2))
2840 return len1 + len2;
2841 return len1;
2842}
2843
2844/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2845 * a yield. This function keep the data in the buffer.
2846 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002847__LJMP static int hlua_channel_dup_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002848{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002849 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002850
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002851 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2852
Thierry Fournier77016da2020-08-15 14:35:51 +02002853 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2854 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002855 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002856 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002857
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002858 if (_hlua_channel_dup(chn, L) == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002859 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_dup_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002860 return 1;
2861}
2862
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002863/* Check arguments for the function "hlua_channel_dup_yield". */
2864__LJMP static int hlua_channel_dup(lua_State *L)
2865{
2866 MAY_LJMP(check_args(L, 1, "dup"));
2867 MAY_LJMP(hlua_checkchannel(L, 1));
2868 return MAY_LJMP(hlua_channel_dup_yield(L, 0, 0));
2869}
2870
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002871/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2872 * a yield. This function consumes the data in the buffer. It returns
2873 * a string containing the data or a nil pointer if no data are available
2874 * and the channel is closed.
2875 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002876__LJMP static int hlua_channel_get_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002877{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002878 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002879 int ret;
2880
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002881 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002882
Thierry Fournier77016da2020-08-15 14:35:51 +02002883 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2884 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002885 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002886 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002887
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002888 ret = _hlua_channel_dup(chn, L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002889 if (unlikely(ret == 0))
Willy Tarreau9635e032018-10-16 17:52:55 +02002890 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_get_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002891
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002892 if (unlikely(ret == -1))
2893 return 1;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002894
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002895 b_sub(&chn->buf, ret);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002896 return 1;
2897}
2898
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002899/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002900__LJMP static int hlua_channel_get(lua_State *L)
2901{
2902 MAY_LJMP(check_args(L, 1, "get"));
2903 MAY_LJMP(hlua_checkchannel(L, 1));
2904 return MAY_LJMP(hlua_channel_get_yield(L, 0, 0));
2905}
2906
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002907/* This functions consumes and returns one line. If the channel is closed,
2908 * and the last data does not contains a final '\n', the data are returned
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002909 * without the final '\n'. When no more data are available, it returns nil
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002910 * value.
2911 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002912__LJMP static int hlua_channel_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002913{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002914 char *blk1;
2915 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002916 size_t len1;
2917 size_t len2;
2918 size_t len;
Willy Tarreau47860ed2015-03-10 14:07:50 +01002919 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002920 int ret;
2921 luaL_Buffer b;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002922
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002923 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2924
Thierry Fournier77016da2020-08-15 14:35:51 +02002925 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2926 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002927 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002928 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002929
Willy Tarreau06d80a92017-10-19 14:32:15 +02002930 ret = ci_getline_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002931 if (ret == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002932 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_getline_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002933
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002934 if (ret == -1) {
2935 lua_pushnil(L);
2936 return 1;
2937 }
2938
2939 luaL_buffinit(L, &b);
2940 luaL_addlstring(&b, blk1, len1);
2941 len = len1;
2942 if (unlikely(ret == 2)) {
2943 luaL_addlstring(&b, blk2, len2);
2944 len += len2;
2945 }
2946 luaL_pushresult(&b);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002947 b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn) + len, NULL, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002948 return 1;
2949}
2950
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002951/* Check arguments for the function "hlua_channel_getline_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002952__LJMP static int hlua_channel_getline(lua_State *L)
2953{
2954 MAY_LJMP(check_args(L, 1, "getline"));
2955 MAY_LJMP(hlua_checkchannel(L, 1));
2956 return MAY_LJMP(hlua_channel_getline_yield(L, 0, 0));
2957}
2958
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002959/* This function takes a string as input, and append it at the
2960 * input side of channel. If the data is too big, but a space
2961 * is probably available after sending some data, the function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002962 * yields. If the data is bigger than the buffer, or if the
2963 * channel is closed, it returns -1. Otherwise, it returns the
2964 * amount of data written.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002965 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002966__LJMP static int hlua_channel_append_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002967{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002968 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002969 size_t len;
2970 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
2971 int l = MAY_LJMP(luaL_checkinteger(L, 3));
2972 int ret;
2973 int max;
2974
Thierry Fournier77016da2020-08-15 14:35:51 +02002975 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
2976 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01002977 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02002978 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01002979
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002980 /* Check if the buffer is available because HAProxy doesn't allocate
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002981 * the request buffer if its not required.
2982 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002983 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01002984 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02002985 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002986 }
2987
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002988 max = channel_recv_limit(chn) - b_data(&chn->buf);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002989 if (max > len - l)
2990 max = len - l;
2991
Willy Tarreau06d80a92017-10-19 14:32:15 +02002992 ret = ci_putblk(chn, str + l, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002993 if (ret == -2 || ret == -3) {
2994 lua_pushinteger(L, -1);
2995 return 1;
2996 }
Willy Tarreaubc18da12015-03-13 14:00:47 +01002997 if (ret == -1) {
2998 chn->flags |= CF_WAKE_WRITE;
Willy Tarreau9635e032018-10-16 17:52:55 +02002999 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Willy Tarreaubc18da12015-03-13 14:00:47 +01003000 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003001 l += ret;
3002 lua_pop(L, 1);
3003 lua_pushinteger(L, l);
3004
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003005 max = channel_recv_limit(chn) - b_data(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003006 if (max == 0 && co_data(chn) == 0) {
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003007 /* There are no space available, and the output buffer is empty.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003008 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003009 * we return the amount of copied data.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003010 */
3011 return 1;
3012 }
3013 if (l < len)
Willy Tarreau9635e032018-10-16 17:52:55 +02003014 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003015 return 1;
3016}
3017
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003018/* Just a wrapper of "hlua_channel_append_yield". It returns the length
3019 * of the written string, or -1 if the channel is closed or if the
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003020 * buffer size is too little for the data.
3021 */
3022__LJMP static int hlua_channel_append(lua_State *L)
3023{
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003024 size_t len;
3025
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003026 MAY_LJMP(check_args(L, 2, "append"));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003027 MAY_LJMP(hlua_checkchannel(L, 1));
3028 MAY_LJMP(luaL_checklstring(L, 2, &len));
3029 MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003030 lua_pushinteger(L, 0);
3031
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003032 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003033}
3034
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003035/* Just a wrapper of "hlua_channel_append_yield". This wrapper starts
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003036 * his process by cleaning the buffer. The result is a replacement
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003037 * of the current data. It returns the length of the written string,
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003038 * or -1 if the channel is closed or if the buffer size is too
3039 * little for the data.
3040 */
3041__LJMP static int hlua_channel_set(lua_State *L)
3042{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003043 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003044
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003045 MAY_LJMP(check_args(L, 2, "set"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003046 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003047 lua_pushinteger(L, 0);
3048
Thierry Fournier77016da2020-08-15 14:35:51 +02003049 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3050 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003051 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003052 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003053
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003054 b_set_data(&chn->buf, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003055
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003056 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003057}
3058
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003059/* Append data in the output side of the buffer. This data is immediately
3060 * sent. The function returns the amount of data written. If the buffer
3061 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003062 * if the channel is closed.
3063 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003064__LJMP static int hlua_channel_send_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003065{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003066 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003067 size_t len;
3068 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3069 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3070 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003071 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003072
Thierry Fournier77016da2020-08-15 14:35:51 +02003073 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3074 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003075 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003076 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003077
Willy Tarreau47860ed2015-03-10 14:07:50 +01003078 if (unlikely(channel_output_closed(chn))) {
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003079 lua_pushinteger(L, -1);
3080 return 1;
3081 }
3082
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003083 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003084 * the request buffer if its not required.
3085 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003086 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01003087 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02003088 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003089 }
3090
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003091 /* The written data will be immediately sent, so we can check
3092 * the available space without taking in account the reserve.
3093 * The reserve is guaranteed for the processing of incoming
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003094 * data, because the buffer will be flushed.
3095 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003096 max = b_room(&chn->buf);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003097
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003098 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003099 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003100 * we return the amount of copied data.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003101 */
Willy Tarreaua79021a2018-06-15 18:07:57 +02003102 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003103 return 1;
3104
3105 /* Adjust the real required length. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003106 if (max > len - l)
3107 max = len - l;
3108
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003109 /* The buffer available size may be not contiguous. This test
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003110 * detects a non contiguous buffer and realign it.
3111 */
Willy Tarreau3f679992018-06-15 15:06:42 +02003112 if (ci_space_for_replace(chn) < max)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003113 channel_slow_realign(chn, trash.area);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003114
3115 /* Copy input data in the buffer. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003116 max = b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn), str + l, max);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003117
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003118 /* buffer replace considers that the input part is filled.
3119 * so, I must forward these new data in the output part.
3120 */
Willy Tarreaubcbd3932018-06-06 07:13:22 +02003121 c_adv(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003122
3123 l += max;
3124 lua_pop(L, 1);
3125 lua_pushinteger(L, l);
3126
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003127 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003128 * in this case, we cannot add more data, so we cannot yield,
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003129 * we return the amount of copied data.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003130 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003131 max = b_room(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003132 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003133 return 1;
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003134
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003135 if (l < len) {
3136 /* If we are waiting for space in the response buffer, we
3137 * must set the flag WAKERESWR. This flag required the task
3138 * wake up if any activity is detected on the response buffer.
3139 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003140 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003141 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003142 else
3143 HLUA_SET_WAKEREQWR(hlua);
Willy Tarreau9635e032018-10-16 17:52:55 +02003144 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003145 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003146
3147 return 1;
3148}
3149
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003150/* Just a wrapper of "_hlua_channel_send". This wrapper permits
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003151 * yield the LUA process, and resume it without checking the
3152 * input arguments.
3153 */
3154__LJMP static int hlua_channel_send(lua_State *L)
3155{
3156 MAY_LJMP(check_args(L, 2, "send"));
3157 lua_pushinteger(L, 0);
3158
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003159 return MAY_LJMP(hlua_channel_send_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003160}
3161
3162/* This function forward and amount of butes. The data pass from
3163 * the input side of the buffer to the output side, and can be
3164 * forwarded. This function never fails.
3165 *
3166 * The Lua function takes an amount of bytes to be forwarded in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003167 * input. It returns the number of bytes forwarded.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003168 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003169__LJMP static int hlua_channel_forward_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003170{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003171 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003172 int len;
3173 int l;
3174 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003175 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003176
3177 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet3f829a42018-12-13 21:56:45 +01003178
Thierry Fournier77016da2020-08-15 14:35:51 +02003179 if (chn_strm(chn)->be->mode == PR_MODE_HTTP) {
3180 lua_pushfstring(L, "Cannot manipulate HAProxy channels in HTTP mode.");
Christopher Faulet3f829a42018-12-13 21:56:45 +01003181 WILL_LJMP(lua_error(L));
Thierry Fournier77016da2020-08-15 14:35:51 +02003182 }
Christopher Faulet3f829a42018-12-13 21:56:45 +01003183
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003184 len = MAY_LJMP(luaL_checkinteger(L, 2));
3185 l = MAY_LJMP(luaL_checkinteger(L, -1));
3186
3187 max = len - l;
Willy Tarreaua79021a2018-06-15 18:07:57 +02003188 if (max > ci_data(chn))
3189 max = ci_data(chn);
Willy Tarreau47860ed2015-03-10 14:07:50 +01003190 channel_forward(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003191 l += max;
3192
3193 lua_pop(L, 1);
3194 lua_pushinteger(L, l);
3195
3196 /* Check if it miss bytes to forward. */
3197 if (l < len) {
3198 /* The the input channel or the output channel are closed, we
3199 * must return the amount of data forwarded.
3200 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003201 if (channel_input_closed(chn) || channel_output_closed(chn))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003202 return 1;
3203
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003204 /* If we are waiting for space data in the response buffer, we
3205 * must set the flag WAKERESWR. This flag required the task
3206 * wake up if any activity is detected on the response buffer.
3207 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003208 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003209 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003210 else
3211 HLUA_SET_WAKEREQWR(hlua);
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003212
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003213 /* Otherwise, we can yield waiting for new data in the inpout side. */
Willy Tarreau9635e032018-10-16 17:52:55 +02003214 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_forward_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003215 }
3216
3217 return 1;
3218}
3219
3220/* Just check the input and prepare the stack for the previous
3221 * function "hlua_channel_forward_yield"
3222 */
3223__LJMP static int hlua_channel_forward(lua_State *L)
3224{
3225 MAY_LJMP(check_args(L, 2, "forward"));
3226 MAY_LJMP(hlua_checkchannel(L, 1));
3227 MAY_LJMP(luaL_checkinteger(L, 2));
3228
3229 lua_pushinteger(L, 0);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003230 return MAY_LJMP(hlua_channel_forward_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003231}
3232
3233/* Just returns the number of bytes available in the input
3234 * side of the buffer. This function never fails.
3235 */
3236__LJMP static int hlua_channel_get_in_len(lua_State *L)
3237{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003238 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003239
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003240 MAY_LJMP(check_args(L, 1, "get_in_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003241 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Fauleta3ceac12018-12-14 13:39:09 +01003242 if (IS_HTX_STRM(chn_strm(chn))) {
3243 struct htx *htx = htxbuf(&chn->buf);
3244 lua_pushinteger(L, htx->data - co_data(chn));
3245 }
3246 else
3247 lua_pushinteger(L, ci_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003248 return 1;
3249}
3250
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003251/* Returns true if the channel is full. */
3252__LJMP static int hlua_channel_is_full(lua_State *L)
3253{
3254 struct channel *chn;
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003255
3256 MAY_LJMP(check_args(L, 1, "is_full"));
3257 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet0ec740e2020-02-26 11:59:19 +01003258 /* ignore the reserve, we are not on a producer side (ie in an
3259 * applet).
3260 */
3261 lua_pushboolean(L, channel_full(chn, 0));
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003262 return 1;
3263}
3264
Christopher Faulet2ac9ba22020-02-25 10:15:50 +01003265/* Returns true if the channel is the response channel. */
3266__LJMP static int hlua_channel_is_resp(lua_State *L)
3267{
3268 struct channel *chn;
3269
3270 MAY_LJMP(check_args(L, 1, "is_resp"));
3271 chn = MAY_LJMP(hlua_checkchannel(L, 1));
3272
3273 lua_pushboolean(L, !!(chn->flags & CF_ISRESP));
3274 return 1;
3275}
3276
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003277/* Just returns the number of bytes available in the output
3278 * side of the buffer. This function never fails.
3279 */
3280__LJMP static int hlua_channel_get_out_len(lua_State *L)
3281{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003282 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003283
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003284 MAY_LJMP(check_args(L, 1, "get_out_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003285 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Willy Tarreaua79021a2018-06-15 18:07:57 +02003286 lua_pushinteger(L, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003287 return 1;
3288}
3289
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003290/*
3291 *
3292 *
3293 * Class Fetches
3294 *
3295 *
3296 */
3297
3298/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003299 * a class stream, otherwise it throws an error.
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003300 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003301__LJMP static struct hlua_smp *hlua_checkfetches(lua_State *L, int ud)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003302{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003303 return MAY_LJMP(hlua_checkudata(L, ud, class_fetches_ref));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003304}
3305
3306/* This function creates and push in the stack a fetch object according
3307 * with a current TXN.
3308 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003309static int hlua_fetches_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003310{
Willy Tarreau7073c472015-04-06 11:15:40 +02003311 struct hlua_smp *hsmp;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003312
3313 /* Check stack size. */
3314 if (!lua_checkstack(L, 3))
3315 return 0;
3316
3317 /* Create the object: obj[0] = userdata.
3318 * Note that the base of the Fetches object is the
3319 * transaction object.
3320 */
3321 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003322 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003323 lua_rawseti(L, -2, 0);
3324
Willy Tarreau7073c472015-04-06 11:15:40 +02003325 hsmp->s = txn->s;
3326 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003327 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003328 hsmp->flags = flags;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003329
3330 /* Pop a class sesison metatable and affect it to the userdata. */
3331 lua_rawgeti(L, LUA_REGISTRYINDEX, class_fetches_ref);
3332 lua_setmetatable(L, -2);
3333
3334 return 1;
3335}
3336
3337/* This function is an LUA binding. It is called with each sample-fetch.
3338 * It uses closure argument to store the associated sample-fetch. It
3339 * returns only one argument or throws an error. An error is thrown
3340 * only if an error is encountered during the argument parsing. If
3341 * the "sample-fetch" function fails, nil is returned.
3342 */
3343__LJMP static int hlua_run_sample_fetch(lua_State *L)
3344{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003345 struct hlua_smp *hsmp;
Willy Tarreau2ec22742015-03-10 14:27:20 +01003346 struct sample_fetch *f;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003347 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003348 int i;
3349 struct sample smp;
3350
3351 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003352 f = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003353
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003354 /* Get traditional arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003355 hsmp = MAY_LJMP(hlua_checkfetches(L, 1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003356
Thierry FOURNIERca988662015-12-20 18:43:03 +01003357 /* Check execution authorization. */
3358 if (f->use & SMP_USE_HTTP_ANY &&
3359 !(hsmp->flags & HLUA_F_MAY_USE_HTTP)) {
3360 lua_pushfstring(L, "the sample-fetch '%s' needs an HTTP parser which "
3361 "is not available in Lua services", f->kw);
3362 WILL_LJMP(lua_error(L));
3363 }
3364
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003365 /* Get extra arguments. */
3366 for (i = 0; i < lua_gettop(L) - 1; i++) {
3367 if (i >= ARGM_NBARGS)
3368 break;
3369 hlua_lua2arg(L, i + 2, &args[i]);
3370 }
3371 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003372 args[i].data.str.area = NULL;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003373
3374 /* Check arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003375 MAY_LJMP(hlua_lua2arg_check(L, 2, args, f->arg_mask, hsmp->p));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003376
3377 /* Run the special args checker. */
Willy Tarreau2ec22742015-03-10 14:27:20 +01003378 if (f->val_args && !f->val_args(args, NULL)) {
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003379 lua_pushfstring(L, "error in arguments");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003380 goto error;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003381 }
3382
3383 /* Initialise the sample. */
3384 memset(&smp, 0, sizeof(smp));
3385
3386 /* Run the sample fetch process. */
Willy Tarreau1777ea62016-03-10 16:15:46 +01003387 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
Thierry FOURNIER0786d052015-05-11 15:42:45 +02003388 if (!f->process(args, &smp, f->kw, f->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003389 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003390 lua_pushstring(L, "");
3391 else
3392 lua_pushnil(L);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003393 goto end;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003394 }
3395
3396 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003397 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003398 hlua_smp2lua_str(L, &smp);
3399 else
3400 hlua_smp2lua(L, &smp);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003401
3402 end:
3403 for (i = 0; args[i].type != ARGT_STOP; i++) {
3404 if (args[i].type == ARGT_STR)
3405 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003406 else if (args[i].type == ARGT_REG)
3407 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003408 }
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003409 return 1;
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003410
3411 error:
3412 for (i = 0; args[i].type != ARGT_STOP; i++) {
3413 if (args[i].type == ARGT_STR)
3414 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003415 else if (args[i].type == ARGT_REG)
3416 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003417 }
3418 WILL_LJMP(lua_error(L));
3419 return 0; /* Never reached */
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003420}
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003421
3422/*
3423 *
3424 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003425 * Class Converters
3426 *
3427 *
3428 */
3429
3430/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003431 * a class stream, otherwise it throws an error.
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003432 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003433__LJMP static struct hlua_smp *hlua_checkconverters(lua_State *L, int ud)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003434{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003435 return MAY_LJMP(hlua_checkudata(L, ud, class_converters_ref));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003436}
3437
3438/* This function creates and push in the stack a Converters object
3439 * according with a current TXN.
3440 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003441static int hlua_converters_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003442{
Willy Tarreau7073c472015-04-06 11:15:40 +02003443 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003444
3445 /* Check stack size. */
3446 if (!lua_checkstack(L, 3))
3447 return 0;
3448
3449 /* Create the object: obj[0] = userdata.
3450 * Note that the base of the Converters object is the
3451 * same than the TXN object.
3452 */
3453 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003454 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003455 lua_rawseti(L, -2, 0);
3456
Willy Tarreau7073c472015-04-06 11:15:40 +02003457 hsmp->s = txn->s;
3458 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003459 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003460 hsmp->flags = flags;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003461
Willy Tarreau87b09662015-04-03 00:22:06 +02003462 /* Pop a class stream metatable and affect it to the table. */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003463 lua_rawgeti(L, LUA_REGISTRYINDEX, class_converters_ref);
3464 lua_setmetatable(L, -2);
3465
3466 return 1;
3467}
3468
3469/* This function is an LUA binding. It is called with each converter.
3470 * It uses closure argument to store the associated converter. It
3471 * returns only one argument or throws an error. An error is thrown
3472 * only if an error is encountered during the argument parsing. If
3473 * the converter function function fails, nil is returned.
3474 */
3475__LJMP static int hlua_run_sample_conv(lua_State *L)
3476{
Willy Tarreauda5f1082015-04-06 11:17:13 +02003477 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003478 struct sample_conv *conv;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003479 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003480 int i;
3481 struct sample smp;
3482
3483 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003484 conv = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003485
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003486 /* Get traditional arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003487 hsmp = MAY_LJMP(hlua_checkconverters(L, 1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003488
3489 /* Get extra arguments. */
3490 for (i = 0; i < lua_gettop(L) - 2; i++) {
3491 if (i >= ARGM_NBARGS)
3492 break;
3493 hlua_lua2arg(L, i + 3, &args[i]);
3494 }
3495 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003496 args[i].data.str.area = NULL;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003497
3498 /* Check arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003499 MAY_LJMP(hlua_lua2arg_check(L, 3, args, conv->arg_mask, hsmp->p));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003500
3501 /* Run the special args checker. */
3502 if (conv->val_args && !conv->val_args(args, conv, "", 0, NULL)) {
3503 hlua_pusherror(L, "error in arguments");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003504 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003505 }
3506
3507 /* Initialise the sample. */
3508 if (!hlua_lua2smp(L, 2, &smp)) {
3509 hlua_pusherror(L, "error in the input argument");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003510 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003511 }
3512
Willy Tarreau1777ea62016-03-10 16:15:46 +01003513 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
3514
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003515 /* Apply expected cast. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003516 if (!sample_casts[smp.data.type][conv->in_type]) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003517 hlua_pusherror(L, "invalid input argument: cannot cast '%s' to '%s'",
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003518 smp_to_type[smp.data.type], smp_to_type[conv->in_type]);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003519 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003520 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003521 if (sample_casts[smp.data.type][conv->in_type] != c_none &&
3522 !sample_casts[smp.data.type][conv->in_type](&smp)) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003523 hlua_pusherror(L, "error during the input argument casting");
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003524 goto error;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003525 }
3526
3527 /* Run the sample conversion process. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02003528 if (!conv->process(args, &smp, conv->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003529 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003530 lua_pushstring(L, "");
3531 else
Willy Tarreaua678b432015-08-28 10:14:59 +02003532 lua_pushnil(L);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003533 goto end;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003534 }
3535
3536 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003537 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003538 hlua_smp2lua_str(L, &smp);
3539 else
3540 hlua_smp2lua(L, &smp);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003541 end:
3542 for (i = 0; args[i].type != ARGT_STOP; i++) {
3543 if (args[i].type == ARGT_STR)
3544 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003545 else if (args[i].type == ARGT_REG)
3546 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003547 }
Willy Tarreaua678b432015-08-28 10:14:59 +02003548 return 1;
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003549
3550 error:
3551 for (i = 0; args[i].type != ARGT_STOP; i++) {
3552 if (args[i].type == ARGT_STR)
3553 chunk_destroy(&args[i].data.str);
Christopher Fauletfd2e9062020-08-06 11:10:57 +02003554 else if (args[i].type == ARGT_REG)
3555 regex_free(args[i].data.reg);
Christopher Fauletaec27ef2020-08-06 08:54:25 +02003556 }
3557 WILL_LJMP(lua_error(L));
3558 return 0; /* Never reached */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003559}
3560
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003561/*
3562 *
3563 *
3564 * Class AppletTCP
3565 *
3566 *
3567 */
3568
3569/* Returns a struct hlua_txn if the stack entry "ud" is
3570 * a class stream, otherwise it throws an error.
3571 */
3572__LJMP static struct hlua_appctx *hlua_checkapplet_tcp(lua_State *L, int ud)
3573{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003574 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_tcp_ref));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003575}
3576
3577/* This function creates and push in the stack an Applet object
3578 * according with a current TXN.
3579 */
3580static int hlua_applet_tcp_new(lua_State *L, struct appctx *ctx)
3581{
3582 struct hlua_appctx *appctx;
3583 struct stream_interface *si = ctx->owner;
3584 struct stream *s = si_strm(si);
3585 struct proxy *p = s->be;
3586
3587 /* Check stack size. */
3588 if (!lua_checkstack(L, 3))
3589 return 0;
3590
3591 /* Create the object: obj[0] = userdata.
3592 * Note that the base of the Converters object is the
3593 * same than the TXN object.
3594 */
3595 lua_newtable(L);
3596 appctx = lua_newuserdata(L, sizeof(*appctx));
3597 lua_rawseti(L, -2, 0);
3598 appctx->appctx = ctx;
3599 appctx->htxn.s = s;
3600 appctx->htxn.p = p;
3601
3602 /* Create the "f" field that contains a list of fetches. */
3603 lua_pushstring(L, "f");
3604 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3605 return 0;
3606 lua_settable(L, -3);
3607
3608 /* Create the "sf" field that contains a list of stringsafe fetches. */
3609 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003610 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003611 return 0;
3612 lua_settable(L, -3);
3613
3614 /* Create the "c" field that contains a list of converters. */
3615 lua_pushstring(L, "c");
3616 if (!hlua_converters_new(L, &appctx->htxn, 0))
3617 return 0;
3618 lua_settable(L, -3);
3619
3620 /* Create the "sc" field that contains a list of stringsafe converters. */
3621 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003622 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003623 return 0;
3624 lua_settable(L, -3);
3625
3626 /* Pop a class stream metatable and affect it to the table. */
3627 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_tcp_ref);
3628 lua_setmetatable(L, -2);
3629
3630 return 1;
3631}
3632
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003633__LJMP static int hlua_applet_tcp_set_var(lua_State *L)
3634{
3635 struct hlua_appctx *appctx;
3636 struct stream *s;
3637 const char *name;
3638 size_t len;
3639 struct sample smp;
3640
Tim Duesterhus4e172c92020-05-19 13:49:42 +02003641 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
3642 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003643
3644 /* It is useles to retrieve the stream, but this function
3645 * runs only in a stream context.
3646 */
3647 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3648 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3649 s = appctx->htxn.s;
3650
3651 /* Converts the third argument in a sample. */
3652 hlua_lua2smp(L, 3, &smp);
3653
3654 /* Store the sample in a variable. */
3655 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02003656
3657 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
3658 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
3659 else
3660 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
3661
Tim Duesterhus84ebc132020-05-19 13:49:41 +02003662 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003663}
3664
3665__LJMP static int hlua_applet_tcp_unset_var(lua_State *L)
3666{
3667 struct hlua_appctx *appctx;
3668 struct stream *s;
3669 const char *name;
3670 size_t len;
3671 struct sample smp;
3672
3673 MAY_LJMP(check_args(L, 2, "unset_var"));
3674
3675 /* It is useles to retrieve the stream, but this function
3676 * runs only in a stream context.
3677 */
3678 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3679 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3680 s = appctx->htxn.s;
3681
3682 /* Unset the variable. */
3683 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02003684 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
3685 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003686}
3687
3688__LJMP static int hlua_applet_tcp_get_var(lua_State *L)
3689{
3690 struct hlua_appctx *appctx;
3691 struct stream *s;
3692 const char *name;
3693 size_t len;
3694 struct sample smp;
3695
3696 MAY_LJMP(check_args(L, 2, "get_var"));
3697
3698 /* It is useles to retrieve the stream, but this function
3699 * runs only in a stream context.
3700 */
3701 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3702 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3703 s = appctx->htxn.s;
3704
3705 smp_set_owner(&smp, s->be, s->sess, s, 0);
3706 if (!vars_get_by_name(name, len, &smp)) {
3707 lua_pushnil(L);
3708 return 1;
3709 }
3710
3711 return hlua_smp2lua(L, &smp);
3712}
3713
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003714__LJMP static int hlua_applet_tcp_set_priv(lua_State *L)
3715{
3716 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3717 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003718 struct hlua *hlua;
3719
3720 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003721 if (!s->hlua)
3722 return 0;
3723 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003724
3725 MAY_LJMP(check_args(L, 2, "set_priv"));
3726
3727 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02003728 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003729
3730 /* Get and store new value. */
3731 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
3732 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
3733
3734 return 0;
3735}
3736
3737__LJMP static int hlua_applet_tcp_get_priv(lua_State *L)
3738{
3739 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3740 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003741 struct hlua *hlua;
3742
3743 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003744 if (!s->hlua) {
3745 lua_pushnil(L);
3746 return 1;
3747 }
3748 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003749
3750 /* Push configuration index in the stack. */
3751 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
3752
3753 return 1;
3754}
3755
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003756/* If expected data not yet available, it returns a yield. This function
3757 * consumes the data in the buffer. It returns a string containing the
3758 * data. This string can be empty.
3759 */
3760__LJMP static int hlua_applet_tcp_getline_yield(lua_State *L, int status, lua_KContext ctx)
3761{
3762 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3763 struct stream_interface *si = appctx->appctx->owner;
3764 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003765 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003766 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003767 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003768 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003769
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003770 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003771 ret = co_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003772
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003773 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003774 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003775 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003776 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_getline_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003777 }
3778
3779 /* End of data: commit the total strings and return. */
3780 if (ret < 0) {
3781 luaL_pushresult(&appctx->b);
3782 return 1;
3783 }
3784
3785 /* Ensure that the block 2 length is usable. */
3786 if (ret == 1)
3787 len2 = 0;
3788
3789 /* dont check the max length read and dont check. */
3790 luaL_addlstring(&appctx->b, blk1, len1);
3791 luaL_addlstring(&appctx->b, blk2, len2);
3792
3793 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003794 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003795 luaL_pushresult(&appctx->b);
3796 return 1;
3797}
3798
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003799/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003800__LJMP static int hlua_applet_tcp_getline(lua_State *L)
3801{
3802 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3803
3804 /* Initialise the string catenation. */
3805 luaL_buffinit(L, &appctx->b);
3806
3807 return MAY_LJMP(hlua_applet_tcp_getline_yield(L, 0, 0));
3808}
3809
3810/* If expected data not yet available, it returns a yield. This function
3811 * consumes the data in the buffer. It returns a string containing the
3812 * data. This string can be empty.
3813 */
3814__LJMP static int hlua_applet_tcp_recv_yield(lua_State *L, int status, lua_KContext ctx)
3815{
3816 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3817 struct stream_interface *si = appctx->appctx->owner;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003818 size_t len = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003819 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003820 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003821 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003822 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003823 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003824
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003825 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003826 ret = co_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003827
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003828 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003829 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003830 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003831 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003832 }
3833
3834 /* End of data: commit the total strings and return. */
3835 if (ret < 0) {
3836 luaL_pushresult(&appctx->b);
3837 return 1;
3838 }
3839
3840 /* Ensure that the block 2 length is usable. */
3841 if (ret == 1)
3842 len2 = 0;
3843
3844 if (len == -1) {
3845
3846 /* If len == -1, catenate all the data avalaile and
3847 * yield because we want to get all the data until
3848 * the end of data stream.
3849 */
3850 luaL_addlstring(&appctx->b, blk1, len1);
3851 luaL_addlstring(&appctx->b, blk2, len2);
Willy Tarreau06d80a92017-10-19 14:32:15 +02003852 co_skip(si_oc(si), len1 + len2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003853 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003854 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003855
3856 } else {
3857
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003858 /* Copy the first block caping to the length required. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003859 if (len1 > len)
3860 len1 = len;
3861 luaL_addlstring(&appctx->b, blk1, len1);
3862 len -= len1;
3863
3864 /* Copy the second block. */
3865 if (len2 > len)
3866 len2 = len;
3867 luaL_addlstring(&appctx->b, blk2, len2);
3868 len -= len2;
3869
3870 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003871 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003872
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003873 /* If there is no other data available, yield waiting for new data. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003874 if (len > 0) {
3875 lua_pushinteger(L, len);
3876 lua_replace(L, 2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003877 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003878 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003879 }
3880
3881 /* return the result. */
3882 luaL_pushresult(&appctx->b);
3883 return 1;
3884 }
3885
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003886 /* we never execute this */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003887 hlua_pusherror(L, "Lua: internal error");
3888 WILL_LJMP(lua_error(L));
3889 return 0;
3890}
3891
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003892/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003893__LJMP static int hlua_applet_tcp_recv(lua_State *L)
3894{
3895 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3896 int len = -1;
3897
3898 if (lua_gettop(L) > 2)
3899 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
3900 if (lua_gettop(L) >= 2) {
3901 len = MAY_LJMP(luaL_checkinteger(L, 2));
3902 lua_pop(L, 1);
3903 }
3904
3905 /* Confirm or set the required length */
3906 lua_pushinteger(L, len);
3907
3908 /* Initialise the string catenation. */
3909 luaL_buffinit(L, &appctx->b);
3910
3911 return MAY_LJMP(hlua_applet_tcp_recv_yield(L, 0, 0));
3912}
3913
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003914/* Append data in the output side of the buffer. This data is immediately
3915 * sent. The function returns the amount of data written. If the buffer
3916 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003917 * if the channel is closed.
3918 */
3919__LJMP static int hlua_applet_tcp_send_yield(lua_State *L, int status, lua_KContext ctx)
3920{
3921 size_t len;
3922 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3923 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3924 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3925 struct stream_interface *si = appctx->appctx->owner;
3926 struct channel *chn = si_ic(si);
3927 int max;
3928
3929 /* Get the max amount of data which can write as input in the channel. */
3930 max = channel_recv_max(chn);
3931 if (max > (len - l))
3932 max = len - l;
3933
3934 /* Copy data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003935 ci_putblk(chn, str + l, max);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003936
3937 /* update counters. */
3938 l += max;
3939 lua_pop(L, 1);
3940 lua_pushinteger(L, l);
3941
3942 /* If some data is not send, declares the situation to the
3943 * applet, and returns a yield.
3944 */
3945 if (l < len) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003946 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003947 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003948 }
3949
3950 return 1;
3951}
3952
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05003953/* Just a wrapper of "hlua_applet_tcp_send_yield". This wrapper permits
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003954 * yield the LUA process, and resume it without checking the
3955 * input arguments.
3956 */
3957__LJMP static int hlua_applet_tcp_send(lua_State *L)
3958{
3959 MAY_LJMP(check_args(L, 2, "send"));
3960 lua_pushinteger(L, 0);
3961
3962 return MAY_LJMP(hlua_applet_tcp_send_yield(L, 0, 0));
3963}
3964
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003965/*
3966 *
3967 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003968 * Class AppletHTTP
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003969 *
3970 *
3971 */
3972
3973/* Returns a struct hlua_txn if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003974 * a class stream, otherwise it throws an error.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003975 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003976__LJMP static struct hlua_appctx *hlua_checkapplet_http(lua_State *L, int ud)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003977{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003978 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_http_ref));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003979}
3980
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003981/* This function creates and push in the stack an Applet object
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003982 * according with a current TXN.
3983 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003984static int hlua_applet_http_new(lua_State *L, struct appctx *ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003985{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003986 struct hlua_appctx *appctx;
Thierry FOURNIER841475e2015-12-11 17:10:09 +01003987 struct hlua_txn htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003988 struct stream_interface *si = ctx->owner;
3989 struct stream *s = si_strm(si);
3990 struct proxy *px = s->be;
Christopher Fauleta2097962019-07-15 16:25:33 +02003991 struct htx *htx;
3992 struct htx_blk *blk;
3993 struct htx_sl *sl;
3994 struct ist path;
3995 unsigned long long len = 0;
3996 int32_t pos;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003997
3998 /* Check stack size. */
3999 if (!lua_checkstack(L, 3))
4000 return 0;
4001
4002 /* Create the object: obj[0] = userdata.
4003 * Note that the base of the Converters object is the
4004 * same than the TXN object.
4005 */
4006 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004007 appctx = lua_newuserdata(L, sizeof(*appctx));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004008 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004009 appctx->appctx = ctx;
4010 appctx->appctx->ctx.hlua_apphttp.status = 200; /* Default status code returned. */
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004011 appctx->appctx->ctx.hlua_apphttp.reason = NULL; /* Use default reason based on status */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004012 appctx->htxn.s = s;
4013 appctx->htxn.p = px;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004014
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004015 /* Create the "f" field that contains a list of fetches. */
4016 lua_pushstring(L, "f");
4017 if (!hlua_fetches_new(L, &appctx->htxn, 0))
4018 return 0;
4019 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004020
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004021 /* Create the "sf" field that contains a list of stringsafe fetches. */
4022 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004023 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004024 return 0;
4025 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004026
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004027 /* Create the "c" field that contains a list of converters. */
4028 lua_pushstring(L, "c");
4029 if (!hlua_converters_new(L, &appctx->htxn, 0))
4030 return 0;
4031 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004032
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004033 /* Create the "sc" field that contains a list of stringsafe converters. */
4034 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004035 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004036 return 0;
4037 lua_settable(L, -3);
Willy Tarreaueee5b512015-04-03 23:46:31 +02004038
Christopher Fauleta2097962019-07-15 16:25:33 +02004039 htx = htxbuf(&s->req.buf);
4040 blk = htx_get_first_blk(htx);
Christopher Fauletea009732019-11-18 15:50:25 +01004041 BUG_ON(!blk || htx_get_blk_type(blk) != HTX_BLK_REQ_SL);
Christopher Fauleta2097962019-07-15 16:25:33 +02004042 sl = htx_get_blk_ptr(htx, blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004043
Christopher Fauleta2097962019-07-15 16:25:33 +02004044 /* Stores the request method. */
4045 lua_pushstring(L, "method");
4046 lua_pushlstring(L, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl));
4047 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004048
Christopher Fauleta2097962019-07-15 16:25:33 +02004049 /* Stores the http version. */
4050 lua_pushstring(L, "version");
4051 lua_pushlstring(L, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl));
4052 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004053
Christopher Fauleta2097962019-07-15 16:25:33 +02004054 /* creates an array of headers. hlua_http_get_headers() crates and push
4055 * the array on the top of the stack.
4056 */
4057 lua_pushstring(L, "headers");
4058 htxn.s = s;
4059 htxn.p = px;
4060 htxn.dir = SMP_OPT_DIR_REQ;
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004061 if (!hlua_http_get_headers(L, &htxn.s->txn->req))
Christopher Fauleta2097962019-07-15 16:25:33 +02004062 return 0;
4063 lua_settable(L, -3);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004064
Christopher Fauleta2097962019-07-15 16:25:33 +02004065 path = http_get_path(htx_sl_req_uri(sl));
Tim Duesterhused526372020-03-05 17:56:33 +01004066 if (isttest(path)) {
Christopher Fauleta2097962019-07-15 16:25:33 +02004067 char *p, *q, *end;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004068
Christopher Fauleta2097962019-07-15 16:25:33 +02004069 p = path.ptr;
4070 end = path.ptr + path.len;
4071 q = p;
4072 while (q < end && *q != '?')
4073 q++;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004074
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004075 /* Stores the request path. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004076 lua_pushstring(L, "path");
4077 lua_pushlstring(L, p, q - p);
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004078 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004079
Christopher Fauleta2097962019-07-15 16:25:33 +02004080 /* Stores the query string. */
4081 lua_pushstring(L, "qs");
4082 if (*q == '?')
4083 q++;
4084 lua_pushlstring(L, q, end - q);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004085 lua_settable(L, -3);
Christopher Fauleta2097962019-07-15 16:25:33 +02004086 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004087
Christopher Fauleta2097962019-07-15 16:25:33 +02004088 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4089 struct htx_blk *blk = htx_get_blk(htx, pos);
4090 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004091
Christopher Fauleta2097962019-07-15 16:25:33 +02004092 if (type == HTX_BLK_EOM || type == HTX_BLK_TLR || type == HTX_BLK_EOT)
4093 break;
4094 if (type == HTX_BLK_DATA)
4095 len += htx_get_blksz(blk);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004096 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004097 if (htx->extra != ULLONG_MAX)
4098 len += htx->extra;
4099
4100 /* Stores the request path. */
4101 lua_pushstring(L, "length");
4102 lua_pushinteger(L, len);
4103 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004104
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004105 /* Create an empty array of HTTP request headers. */
4106 lua_pushstring(L, "response");
4107 lua_newtable(L);
4108 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004109
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004110 /* Pop a class stream metatable and affect it to the table. */
4111 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_http_ref);
4112 lua_setmetatable(L, -2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004113
4114 return 1;
4115}
4116
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004117__LJMP static int hlua_applet_http_set_var(lua_State *L)
4118{
4119 struct hlua_appctx *appctx;
4120 struct stream *s;
4121 const char *name;
4122 size_t len;
4123 struct sample smp;
4124
Tim Duesterhus4e172c92020-05-19 13:49:42 +02004125 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
4126 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004127
4128 /* It is useles to retrieve the stream, but this function
4129 * runs only in a stream context.
4130 */
4131 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4132 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4133 s = appctx->htxn.s;
4134
4135 /* Converts the third argument in a sample. */
4136 hlua_lua2smp(L, 3, &smp);
4137
4138 /* Store the sample in a variable. */
4139 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02004140
4141 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
4142 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
4143 else
4144 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
4145
Tim Duesterhus84ebc132020-05-19 13:49:41 +02004146 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004147}
4148
4149__LJMP static int hlua_applet_http_unset_var(lua_State *L)
4150{
4151 struct hlua_appctx *appctx;
4152 struct stream *s;
4153 const char *name;
4154 size_t len;
4155 struct sample smp;
4156
4157 MAY_LJMP(check_args(L, 2, "unset_var"));
4158
4159 /* It is useles to retrieve the stream, but this function
4160 * runs only in a stream context.
4161 */
4162 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4163 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4164 s = appctx->htxn.s;
4165
4166 /* Unset the variable. */
4167 smp_set_owner(&smp, s->be, s->sess, s, 0);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02004168 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
4169 return 1;
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004170}
4171
4172__LJMP static int hlua_applet_http_get_var(lua_State *L)
4173{
4174 struct hlua_appctx *appctx;
4175 struct stream *s;
4176 const char *name;
4177 size_t len;
4178 struct sample smp;
4179
4180 MAY_LJMP(check_args(L, 2, "get_var"));
4181
4182 /* It is useles to retrieve the stream, but this function
4183 * runs only in a stream context.
4184 */
4185 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4186 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4187 s = appctx->htxn.s;
4188
4189 smp_set_owner(&smp, s->be, s->sess, s, 0);
4190 if (!vars_get_by_name(name, len, &smp)) {
4191 lua_pushnil(L);
4192 return 1;
4193 }
4194
4195 return hlua_smp2lua(L, &smp);
4196}
4197
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004198__LJMP static int hlua_applet_http_set_priv(lua_State *L)
4199{
4200 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4201 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004202 struct hlua *hlua;
4203
4204 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004205 if (!s->hlua)
4206 return 0;
4207 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004208
4209 MAY_LJMP(check_args(L, 2, "set_priv"));
4210
4211 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02004212 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004213
4214 /* Get and store new value. */
4215 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
4216 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
4217
4218 return 0;
4219}
4220
4221__LJMP static int hlua_applet_http_get_priv(lua_State *L)
4222{
4223 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4224 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004225 struct hlua *hlua;
4226
4227 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004228 if (!s->hlua) {
4229 lua_pushnil(L);
4230 return 1;
4231 }
4232 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004233
4234 /* Push configuration index in the stack. */
4235 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
4236
4237 return 1;
4238}
4239
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004240/* If expected data not yet available, it returns a yield. This function
4241 * consumes the data in the buffer. It returns a string containing the
4242 * data. This string can be empty.
4243 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004244__LJMP static int hlua_applet_http_getline_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004245{
4246 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4247 struct stream_interface *si = appctx->appctx->owner;
4248 struct channel *req = si_oc(si);
4249 struct htx *htx;
4250 struct htx_blk *blk;
4251 size_t count;
4252 int stop = 0;
4253
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004254 htx = htx_from_buf(&req->buf);
4255 count = co_data(req);
Christopher Fauleta3f15502019-05-13 15:27:23 +02004256 blk = htx_get_first_blk(htx);
Christopher Fauletcc26b132018-12-18 21:20:57 +01004257
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004258 while (count && !stop && blk) {
4259 enum htx_blk_type type = htx_get_blk_type(blk);
4260 uint32_t sz = htx_get_blksz(blk);
4261 struct ist v;
4262 uint32_t vlen;
4263 char *nl;
4264
Christopher Faulete461e342018-12-18 16:43:35 +01004265 if (type == HTX_BLK_EOM) {
4266 stop = 1;
4267 break;
4268 }
4269
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004270 vlen = sz;
4271 if (vlen > count) {
4272 if (type != HTX_BLK_DATA)
4273 break;
4274 vlen = count;
4275 }
4276
4277 switch (type) {
4278 case HTX_BLK_UNUSED:
4279 break;
4280
4281 case HTX_BLK_DATA:
4282 v = htx_get_blk_value(htx, blk);
4283 v.len = vlen;
4284 nl = istchr(v, '\n');
4285 if (nl != NULL) {
4286 stop = 1;
4287 vlen = nl - v.ptr + 1;
4288 }
4289 luaL_addlstring(&appctx->b, v.ptr, vlen);
4290 break;
4291
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004292 case HTX_BLK_TLR:
4293 case HTX_BLK_EOM:
4294 stop = 1;
4295 break;
4296
4297 default:
4298 break;
4299 }
4300
4301 co_set_data(req, co_data(req) - vlen);
4302 count -= vlen;
4303 if (sz == vlen)
4304 blk = htx_remove_blk(htx, blk);
4305 else {
4306 htx_cut_data_blk(htx, blk, vlen);
4307 break;
4308 }
4309 }
4310
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004311 htx_to_buf(htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004312 if (!stop) {
4313 si_cant_get(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004314 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004315 }
4316
4317 /* return the result. */
4318 luaL_pushresult(&appctx->b);
4319 return 1;
4320}
4321
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004322
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004323/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004324__LJMP static int hlua_applet_http_getline(lua_State *L)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004325{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004326 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004327
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004328 /* Initialise the string catenation. */
4329 luaL_buffinit(L, &appctx->b);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004330
Christopher Fauleta2097962019-07-15 16:25:33 +02004331 return MAY_LJMP(hlua_applet_http_getline_yield(L, 0, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004332}
4333
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004334/* If expected data not yet available, it returns a yield. This function
4335 * consumes the data in the buffer. It returns a string containing the
4336 * data. This string can be empty.
4337 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004338__LJMP static int hlua_applet_http_recv_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004339{
4340 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4341 struct stream_interface *si = appctx->appctx->owner;
4342 struct channel *req = si_oc(si);
4343 struct htx *htx;
4344 struct htx_blk *blk;
4345 size_t count;
4346 int len;
4347
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004348 htx = htx_from_buf(&req->buf);
4349 len = MAY_LJMP(luaL_checkinteger(L, 2));
4350 count = co_data(req);
Christopher Faulet29f17582019-05-23 11:03:26 +02004351 blk = htx_get_head_blk(htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004352 while (count && len && blk) {
4353 enum htx_blk_type type = htx_get_blk_type(blk);
4354 uint32_t sz = htx_get_blksz(blk);
4355 struct ist v;
4356 uint32_t vlen;
4357
Christopher Faulete461e342018-12-18 16:43:35 +01004358 if (type == HTX_BLK_EOM) {
4359 len = 0;
4360 break;
4361 }
4362
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004363 vlen = sz;
4364 if (len > 0 && vlen > len)
4365 vlen = len;
4366 if (vlen > count) {
4367 if (type != HTX_BLK_DATA)
4368 break;
4369 vlen = count;
4370 }
4371
4372 switch (type) {
4373 case HTX_BLK_UNUSED:
4374 break;
4375
4376 case HTX_BLK_DATA:
4377 v = htx_get_blk_value(htx, blk);
4378 luaL_addlstring(&appctx->b, v.ptr, vlen);
4379 break;
4380
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004381 case HTX_BLK_TLR:
4382 case HTX_BLK_EOM:
4383 len = 0;
4384 break;
4385
4386 default:
4387 break;
4388 }
4389
4390 co_set_data(req, co_data(req) - vlen);
4391 count -= vlen;
4392 if (len > 0)
4393 len -= vlen;
4394 if (sz == vlen)
4395 blk = htx_remove_blk(htx, blk);
4396 else {
4397 htx_cut_data_blk(htx, blk, vlen);
4398 break;
4399 }
4400 }
4401
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004402 htx_to_buf(htx, &req->buf);
4403
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004404 /* If we are no other data available, yield waiting for new data. */
4405 if (len) {
4406 if (len > 0) {
4407 lua_pushinteger(L, len);
4408 lua_replace(L, 2);
4409 }
4410 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004411 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004412 }
4413
4414 /* return the result. */
4415 luaL_pushresult(&appctx->b);
4416 return 1;
4417}
4418
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004419/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004420__LJMP static int hlua_applet_http_recv(lua_State *L)
4421{
4422 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4423 int len = -1;
4424
4425 /* Check arguments. */
4426 if (lua_gettop(L) > 2)
4427 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
4428 if (lua_gettop(L) >= 2) {
4429 len = MAY_LJMP(luaL_checkinteger(L, 2));
4430 lua_pop(L, 1);
4431 }
4432
Christopher Fauleta2097962019-07-15 16:25:33 +02004433 lua_pushinteger(L, len);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004434
Christopher Fauleta2097962019-07-15 16:25:33 +02004435 /* Initialise the string catenation. */
4436 luaL_buffinit(L, &appctx->b);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004437
Christopher Fauleta2097962019-07-15 16:25:33 +02004438 return MAY_LJMP(hlua_applet_http_recv_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004439}
4440
4441/* Append data in the output side of the buffer. This data is immediately
4442 * sent. The function returns the amount of data written. If the buffer
4443 * cannot contain the data, the function yields. The function returns -1
4444 * if the channel is closed.
4445 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004446__LJMP static int hlua_applet_http_send_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004447{
4448 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4449 struct stream_interface *si = appctx->appctx->owner;
4450 struct channel *res = si_ic(si);
4451 struct htx *htx = htx_from_buf(&res->buf);
4452 const char *data;
4453 size_t len;
4454 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4455 int max;
4456
Christopher Faulet9060fc02019-07-03 11:39:30 +02004457 max = htx_get_max_blksz(htx, channel_htx_recv_max(res, htx));
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004458 if (!max)
4459 goto snd_yield;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004460
4461 data = MAY_LJMP(luaL_checklstring(L, 2, &len));
4462
4463 /* Get the max amount of data which can write as input in the channel. */
4464 if (max > (len - l))
4465 max = len - l;
4466
4467 /* Copy data. */
Willy Tarreau0a7ef022019-05-28 10:30:11 +02004468 max = htx_add_data(htx, ist2(data + l, max));
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004469 channel_add_input(res, max);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004470
4471 /* update counters. */
4472 l += max;
4473 lua_pop(L, 1);
4474 lua_pushinteger(L, l);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004475
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004476 /* If some data is not send, declares the situation to the
4477 * applet, and returns a yield.
4478 */
4479 if (l < len) {
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004480 snd_yield:
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004481 htx_to_buf(htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004482 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004483 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004484 }
4485
Christopher Fauleta2097962019-07-15 16:25:33 +02004486 htx_to_buf(htx, &res->buf);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004487 return 1;
4488}
4489
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004490/* Just a wrapper of "hlua_applet_send_yield". This wrapper permits
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004491 * yield the LUA process, and resume it without checking the
4492 * input arguments.
4493 */
4494__LJMP static int hlua_applet_http_send(lua_State *L)
4495{
4496 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004497
4498 /* We want to send some data. Headers must be sent. */
4499 if (!(appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
4500 hlua_pusherror(L, "Lua: 'send' you must call start_response() before sending data.");
4501 WILL_LJMP(lua_error(L));
4502 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004503
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004504 /* This integer is used for followinf the amount of data sent. */
Christopher Fauleta2097962019-07-15 16:25:33 +02004505 lua_pushinteger(L, 0);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004506
Christopher Fauleta2097962019-07-15 16:25:33 +02004507 return MAY_LJMP(hlua_applet_http_send_yield(L, 0, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004508}
4509
4510__LJMP static int hlua_applet_http_addheader(lua_State *L)
4511{
4512 const char *name;
4513 int ret;
4514
4515 MAY_LJMP(hlua_checkapplet_http(L, 1));
4516 name = MAY_LJMP(luaL_checkstring(L, 2));
4517 MAY_LJMP(luaL_checkstring(L, 3));
4518
4519 /* Push in the stack the "response" entry. */
4520 ret = lua_getfield(L, 1, "response");
4521 if (ret != LUA_TTABLE) {
4522 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response'] "
4523 "is expected as an array. %s found", lua_typename(L, ret));
4524 WILL_LJMP(lua_error(L));
4525 }
4526
4527 /* check if the header is already registered if it is not
4528 * the case, register it.
4529 */
4530 ret = lua_getfield(L, -1, name);
4531 if (ret == LUA_TNIL) {
4532
4533 /* Entry not found. */
4534 lua_pop(L, 1); /* remove the nil. The "response" table is the top of the stack. */
4535
4536 /* Insert the new header name in the array in the top of the stack.
4537 * It left the new array in the top of the stack.
4538 */
4539 lua_newtable(L);
4540 lua_pushvalue(L, 2);
4541 lua_pushvalue(L, -2);
4542 lua_settable(L, -4);
4543
4544 } else if (ret != LUA_TTABLE) {
4545
4546 /* corruption error. */
4547 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response']['%s'] "
4548 "is expected as an array. %s found", name, lua_typename(L, ret));
4549 WILL_LJMP(lua_error(L));
4550 }
4551
4552 /* Now the top od thestack is an array of values. We push
4553 * the header value as new entry.
4554 */
4555 lua_pushvalue(L, 3);
4556 ret = lua_rawlen(L, -2);
4557 lua_rawseti(L, -2, ret + 1);
4558 lua_pushboolean(L, 1);
4559 return 1;
4560}
4561
4562__LJMP static int hlua_applet_http_status(lua_State *L)
4563{
4564 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4565 int status = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004566 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004567
4568 if (status < 100 || status > 599) {
4569 lua_pushboolean(L, 0);
4570 return 1;
4571 }
4572
4573 appctx->appctx->ctx.hlua_apphttp.status = status;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004574 appctx->appctx->ctx.hlua_apphttp.reason = reason;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004575 lua_pushboolean(L, 1);
4576 return 1;
4577}
4578
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004579
Christopher Fauleta2097962019-07-15 16:25:33 +02004580__LJMP static int hlua_applet_http_send_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004581{
4582 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4583 struct stream_interface *si = appctx->appctx->owner;
4584 struct channel *res = si_ic(si);
4585 struct htx *htx;
4586 struct htx_sl *sl;
4587 struct h1m h1m;
4588 const char *status, *reason;
4589 const char *name, *value;
4590 size_t nlen, vlen;
4591 unsigned int flags;
4592
4593 /* Send the message at once. */
4594 htx = htx_from_buf(&res->buf);
4595 h1m_init_res(&h1m);
4596
4597 /* Use the same http version than the request. */
4598 status = ultoa_r(appctx->appctx->ctx.hlua_apphttp.status, trash.area, trash.size);
4599 reason = appctx->appctx->ctx.hlua_apphttp.reason;
4600 if (reason == NULL)
4601 reason = http_get_reason(appctx->appctx->ctx.hlua_apphttp.status);
4602 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11) {
4603 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
4604 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"), ist(status), ist(reason));
4605 }
4606 else {
4607 flags = HTX_SL_F_IS_RESP;
4608 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"), ist(status), ist(reason));
4609 }
4610 if (!sl) {
4611 hlua_pusherror(L, "Lua applet http '%s': Failed to create response.\n",
4612 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4613 WILL_LJMP(lua_error(L));
4614 }
4615 sl->info.res.status = appctx->appctx->ctx.hlua_apphttp.status;
4616
4617 /* Get the array associated to the field "response" in the object AppletHTTP. */
4618 lua_pushvalue(L, 0);
4619 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
4620 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
4621 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4622 WILL_LJMP(lua_error(L));
4623 }
4624
4625 /* Browse the list of headers. */
4626 lua_pushnil(L);
4627 while(lua_next(L, -2) != 0) {
4628 /* We expect a string as -2. */
4629 if (lua_type(L, -2) != LUA_TSTRING) {
4630 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
4631 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4632 lua_typename(L, lua_type(L, -2)));
4633 WILL_LJMP(lua_error(L));
4634 }
4635 name = lua_tolstring(L, -2, &nlen);
4636
4637 /* We expect an array as -1. */
4638 if (lua_type(L, -1) != LUA_TTABLE) {
4639 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'] element must be an table. got %s.\n",
4640 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4641 name,
4642 lua_typename(L, lua_type(L, -1)));
4643 WILL_LJMP(lua_error(L));
4644 }
4645
4646 /* Browse the table who is on the top of the stack. */
4647 lua_pushnil(L);
4648 while(lua_next(L, -2) != 0) {
4649 int id;
4650
4651 /* We expect a number as -2. */
4652 if (lua_type(L, -2) != LUA_TNUMBER) {
4653 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][] element must be a number. got %s.\n",
4654 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4655 name,
4656 lua_typename(L, lua_type(L, -2)));
4657 WILL_LJMP(lua_error(L));
4658 }
4659 id = lua_tointeger(L, -2);
4660
4661 /* We expect a string as -2. */
4662 if (lua_type(L, -1) != LUA_TSTRING) {
4663 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][%d] element must be a string. got %s.\n",
4664 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4665 name, id,
4666 lua_typename(L, lua_type(L, -1)));
4667 WILL_LJMP(lua_error(L));
4668 }
4669 value = lua_tolstring(L, -1, &vlen);
4670
4671 /* Simple Protocol checks. */
4672 if (isteqi(ist2(name, nlen), ist("transfer-encoding")))
Christopher Faulet700d9e82020-01-31 12:21:52 +01004673 h1_parse_xfer_enc_header(&h1m, ist2(value, vlen));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004674 else if (isteqi(ist2(name, nlen), ist("content-length"))) {
4675 struct ist v = ist2(value, vlen);
4676 int ret;
4677
4678 ret = h1_parse_cont_len_header(&h1m, &v);
4679 if (ret < 0) {
4680 hlua_pusherror(L, "Lua applet http '%s': Invalid '%s' header.\n",
4681 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4682 name);
4683 WILL_LJMP(lua_error(L));
4684 }
4685 else if (ret == 0)
4686 goto next; /* Skip it */
4687 }
4688
4689 /* Add a new header */
4690 if (!htx_add_header(htx, ist2(name, nlen), ist2(value, vlen))) {
4691 hlua_pusherror(L, "Lua applet http '%s': Failed to add header '%s' in the response.\n",
4692 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4693 name);
4694 WILL_LJMP(lua_error(L));
4695 }
4696 next:
4697 /* Remove the array from the stack, and get next element with a remaining string. */
4698 lua_pop(L, 1);
4699 }
4700
4701 /* Remove the array from the stack, and get next element with a remaining string. */
4702 lua_pop(L, 1);
4703 }
4704
4705 if (h1m.flags & H1_MF_CHNK)
4706 h1m.flags &= ~H1_MF_CLEN;
4707 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
4708 h1m.flags |= H1_MF_XFER_LEN;
4709
4710 /* Uset HTX start-line flags */
4711 if (h1m.flags & H1_MF_XFER_ENC)
4712 flags |= HTX_SL_F_XFER_ENC;
4713 if (h1m.flags & H1_MF_XFER_LEN) {
4714 flags |= HTX_SL_F_XFER_LEN;
4715 if (h1m.flags & H1_MF_CHNK)
4716 flags |= HTX_SL_F_CHNK;
4717 else if (h1m.flags & H1_MF_CLEN)
4718 flags |= HTX_SL_F_CLEN;
4719 if (h1m.body_len == 0)
4720 flags |= HTX_SL_F_BODYLESS;
4721 }
4722 sl->flags |= flags;
4723
4724 /* If we dont have a content-length set, and the HTTP version is 1.1
4725 * and the status code implies the presence of a message body, we must
4726 * announce a transfer encoding chunked. This is required by haproxy
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05004727 * for the keepalive compliance. If the applet announces a transfer-encoding
4728 * chunked itself, don't do anything.
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004729 */
4730 if ((flags & (HTX_SL_F_VER_11|HTX_SL_F_XFER_LEN)) == HTX_SL_F_VER_11 &&
4731 appctx->appctx->ctx.hlua_apphttp.status >= 200 &&
4732 appctx->appctx->ctx.hlua_apphttp.status != 204 &&
4733 appctx->appctx->ctx.hlua_apphttp.status != 304) {
4734 /* Add a new header */
4735 sl->flags |= (HTX_SL_F_XFER_ENC|H1_MF_CHNK|H1_MF_XFER_LEN);
4736 if (!htx_add_header(htx, ist("transfer-encoding"), ist("chunked"))) {
4737 hlua_pusherror(L, "Lua applet http '%s': Failed to add header 'transfer-encoding' in the response.\n",
4738 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4739 WILL_LJMP(lua_error(L));
4740 }
4741 }
4742
4743 /* Finalize headers. */
4744 if (!htx_add_endof(htx, HTX_BLK_EOH)) {
4745 hlua_pusherror(L, "Lua applet http '%s': Failed create the response.\n",
4746 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4747 WILL_LJMP(lua_error(L));
4748 }
4749
4750 if (htx_used_space(htx) > b_size(&res->buf) - global.tune.maxrewrite) {
4751 b_reset(&res->buf);
4752 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4753 WILL_LJMP(lua_error(L));
4754 }
4755
4756 htx_to_buf(htx, &res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004757 channel_add_input(res, htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004758
4759 /* Headers sent, set the flag. */
4760 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4761 return 0;
4762
4763}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004764/* We will build the status line and the headers of the HTTP response.
4765 * We will try send at once if its not possible, we give back the hand
4766 * waiting for more room.
4767 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004768__LJMP static int hlua_applet_http_start_response_yield(lua_State *L, int status, lua_KContext ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004769{
4770 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4771 struct stream_interface *si = appctx->appctx->owner;
4772 struct channel *res = si_ic(si);
4773
4774 if (co_data(res)) {
4775 si_rx_room_blk(si);
Christopher Fauleta2097962019-07-15 16:25:33 +02004776 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_start_response_yield, TICK_ETERNITY, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004777 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004778 return MAY_LJMP(hlua_applet_http_send_response(L));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004779}
4780
4781
Christopher Fauleta2097962019-07-15 16:25:33 +02004782__LJMP static int hlua_applet_http_start_response(lua_State *L)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004783{
Christopher Fauleta2097962019-07-15 16:25:33 +02004784 return MAY_LJMP(hlua_applet_http_start_response_yield(L, 0, 0));
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004785}
4786
Christopher Fauleta2097962019-07-15 16:25:33 +02004787/*
4788 *
4789 *
4790 * Class HTTP
4791 *
4792 *
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004793 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004794
4795/* Returns a struct hlua_txn if the stack entry "ud" is
4796 * a class stream, otherwise it throws an error.
4797 */
4798__LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004799{
Christopher Fauleta2097962019-07-15 16:25:33 +02004800 return MAY_LJMP(hlua_checkudata(L, ud, class_http_ref));
4801}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004802
Christopher Fauleta2097962019-07-15 16:25:33 +02004803/* This function creates and push in the stack a HTTP object
4804 * according with a current TXN.
4805 */
4806static int hlua_http_new(lua_State *L, struct hlua_txn *txn)
4807{
4808 struct hlua_txn *htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004809
Christopher Fauleta2097962019-07-15 16:25:33 +02004810 /* Check stack size. */
4811 if (!lua_checkstack(L, 3))
4812 return 0;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004813
Christopher Fauleta2097962019-07-15 16:25:33 +02004814 /* Create the object: obj[0] = userdata.
4815 * Note that the base of the Converters object is the
4816 * same than the TXN object.
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004817 */
Christopher Fauleta2097962019-07-15 16:25:33 +02004818 lua_newtable(L);
4819 htxn = lua_newuserdata(L, sizeof(*htxn));
4820 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004821
4822 htxn->s = txn->s;
4823 htxn->p = txn->p;
Christopher Faulet256b69a2019-05-23 11:14:21 +02004824 htxn->dir = txn->dir;
4825 htxn->flags = txn->flags;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004826
4827 /* Pop a class stream metatable and affect it to the table. */
4828 lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref);
4829 lua_setmetatable(L, -2);
4830
4831 return 1;
4832}
4833
4834/* This function creates ans returns an array of HTTP headers.
4835 * This function does not fails. It is used as wrapper with the
4836 * 2 following functions.
4837 */
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004838__LJMP static int hlua_http_get_headers(lua_State *L, struct http_msg *msg)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004839{
Christopher Fauleta2097962019-07-15 16:25:33 +02004840 struct htx *htx;
4841 int32_t pos;
4842
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004843 /* Create the table. */
4844 lua_newtable(L);
4845
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004846
Christopher Fauleta2097962019-07-15 16:25:33 +02004847 htx = htxbuf(&msg->chn->buf);
4848 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
4849 struct htx_blk *blk = htx_get_blk(htx, pos);
4850 enum htx_blk_type type = htx_get_blk_type(blk);
4851 struct ist n, v;
4852 int len;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004853
Christopher Fauleta2097962019-07-15 16:25:33 +02004854 if (type == HTX_BLK_HDR) {
4855 n = htx_get_blk_name(htx,blk);
4856 v = htx_get_blk_value(htx, blk);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004857 }
Christopher Fauleta2097962019-07-15 16:25:33 +02004858 else if (type == HTX_BLK_EOH)
4859 break;
4860 else
4861 continue;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004862
Christopher Fauleta2097962019-07-15 16:25:33 +02004863 /* Check for existing entry:
4864 * assume that the table is on the top of the stack, and
4865 * push the key in the stack, the function lua_gettable()
4866 * perform the lookup.
4867 */
4868 lua_pushlstring(L, n.ptr, n.len);
4869 lua_gettable(L, -2);
Christopher Faulet724a12c2018-12-13 22:12:15 +01004870
Christopher Fauleta2097962019-07-15 16:25:33 +02004871 switch (lua_type(L, -1)) {
4872 case LUA_TNIL:
4873 /* Table not found, create it. */
4874 lua_pop(L, 1); /* remove the nil value. */
4875 lua_pushlstring(L, n.ptr, n.len); /* push the header name as key. */
4876 lua_newtable(L); /* create and push empty table. */
4877 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
4878 lua_rawseti(L, -2, 0); /* index header value (pop it). */
4879 lua_rawset(L, -3); /* index new table with header name (pop the values). */
Christopher Faulet724a12c2018-12-13 22:12:15 +01004880 break;
Christopher Faulet724a12c2018-12-13 22:12:15 +01004881
Christopher Fauleta2097962019-07-15 16:25:33 +02004882 case LUA_TTABLE:
4883 /* Entry found: push the value in the table. */
4884 len = lua_rawlen(L, -1);
4885 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
4886 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
4887 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
4888 break;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004889
Christopher Fauleta2097962019-07-15 16:25:33 +02004890 default:
4891 /* Other cases are errors. */
4892 hlua_pusherror(L, "internal error during the parsing of headers.");
4893 WILL_LJMP(lua_error(L));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004894 }
4895 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004896 return 1;
4897}
4898
4899__LJMP static int hlua_http_req_get_headers(lua_State *L)
4900{
4901 struct hlua_txn *htxn;
4902
4903 MAY_LJMP(check_args(L, 1, "req_get_headers"));
4904 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4905
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004906 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004907 WILL_LJMP(lua_error(L));
4908
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004909 return hlua_http_get_headers(L, &htxn->s->txn->req);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004910}
4911
4912__LJMP static int hlua_http_res_get_headers(lua_State *L)
4913{
4914 struct hlua_txn *htxn;
4915
4916 MAY_LJMP(check_args(L, 1, "res_get_headers"));
4917 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4918
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004919 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004920 WILL_LJMP(lua_error(L));
4921
Christopher Faulet9d1332b2020-02-24 16:46:16 +01004922 return hlua_http_get_headers(L, &htxn->s->txn->rsp);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004923}
4924
4925/* This function replace full header, or just a value in
4926 * the request or in the response. It is a wrapper fir the
4927 * 4 following functions.
4928 */
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004929__LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct http_msg *msg, int full)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004930{
4931 size_t name_len;
4932 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
4933 const char *reg = MAY_LJMP(luaL_checkstring(L, 3));
4934 const char *value = MAY_LJMP(luaL_checkstring(L, 4));
Christopher Fauleta2097962019-07-15 16:25:33 +02004935 struct htx *htx;
Dragan Dosen26743032019-04-30 15:54:36 +02004936 struct my_regex *re;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004937
Dragan Dosen26743032019-04-30 15:54:36 +02004938 if (!(re = regex_comp(reg, 1, 1, NULL)))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004939 WILL_LJMP(luaL_argerror(L, 3, "invalid regex"));
4940
Christopher Fauleta2097962019-07-15 16:25:33 +02004941 htx = htxbuf(&msg->chn->buf);
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004942 http_replace_hdrs(chn_strm(msg->chn), htx, ist2(name, name_len), value, re, full);
Dragan Dosen26743032019-04-30 15:54:36 +02004943 regex_free(re);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004944 return 0;
4945}
4946
4947__LJMP static int hlua_http_req_rep_hdr(lua_State *L)
4948{
4949 struct hlua_txn *htxn;
4950
4951 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
4952 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4953
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004954 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004955 WILL_LJMP(lua_error(L));
4956
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004957 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004958}
4959
4960__LJMP static int hlua_http_res_rep_hdr(lua_State *L)
4961{
4962 struct hlua_txn *htxn;
4963
4964 MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
4965 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4966
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004967 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004968 WILL_LJMP(lua_error(L));
4969
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004970 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004971}
4972
4973__LJMP static int hlua_http_req_rep_val(lua_State *L)
4974{
4975 struct hlua_txn *htxn;
4976
4977 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
4978 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4979
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004980 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004981 WILL_LJMP(lua_error(L));
4982
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004983 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->req, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004984}
4985
4986__LJMP static int hlua_http_res_rep_val(lua_State *L)
4987{
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004988 struct hlua_txn *htxn;
4989
4990 MAY_LJMP(check_args(L, 4, "res_rep_val"));
4991 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4992
Christopher Fauletd8f0e072020-02-25 09:45:51 +01004993 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02004994 WILL_LJMP(lua_error(L));
4995
Christopher Fauletd1914aa2020-02-24 16:52:46 +01004996 return MAY_LJMP(hlua_http_rep_hdr(L, &htxn->s->txn->rsp, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004997}
4998
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004999/* This function deletes all the occurrences of an header.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005000 * It is a wrapper for the 2 following functions.
5001 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005002__LJMP static inline int hlua_http_del_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005003{
5004 size_t len;
5005 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005006 struct htx *htx = htxbuf(&msg->chn->buf);
5007 struct http_hdr_ctx ctx;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005008
Christopher Fauleta2097962019-07-15 16:25:33 +02005009 ctx.blk = NULL;
5010 while (http_find_header(htx, ist2(name, len), &ctx, 1))
5011 http_remove_header(htx, &ctx);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005012 return 0;
5013}
5014
5015__LJMP static int hlua_http_req_del_hdr(lua_State *L)
5016{
5017 struct hlua_txn *htxn;
5018
5019 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
5020 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5021
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005022 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005023 WILL_LJMP(lua_error(L));
5024
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005025 return hlua_http_del_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005026}
5027
5028__LJMP static int hlua_http_res_del_hdr(lua_State *L)
5029{
5030 struct hlua_txn *htxn;
5031
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005032 MAY_LJMP(check_args(L, 2, "res_del_hdr"));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005033 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5034
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005035 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005036 WILL_LJMP(lua_error(L));
5037
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005038 return hlua_http_del_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005039}
5040
5041/* This function adds an header. It is a wrapper used by
5042 * the 2 following functions.
5043 */
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005044__LJMP static inline int hlua_http_add_hdr(lua_State *L, struct http_msg *msg)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005045{
5046 size_t name_len;
5047 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5048 size_t value_len;
5049 const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len));
Christopher Fauleta2097962019-07-15 16:25:33 +02005050 struct htx *htx = htxbuf(&msg->chn->buf);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005051
Christopher Fauleta2097962019-07-15 16:25:33 +02005052 lua_pushboolean(L, http_add_header(htx, ist2(name, name_len),
5053 ist2(value, value_len)));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005054 return 0;
5055}
5056
5057__LJMP static int hlua_http_req_add_hdr(lua_State *L)
5058{
5059 struct hlua_txn *htxn;
5060
5061 MAY_LJMP(check_args(L, 3, "req_add_hdr"));
5062 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5063
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005064 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005065 WILL_LJMP(lua_error(L));
5066
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005067 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005068}
5069
5070__LJMP static int hlua_http_res_add_hdr(lua_State *L)
5071{
5072 struct hlua_txn *htxn;
5073
5074 MAY_LJMP(check_args(L, 3, "res_add_hdr"));
5075 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5076
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005077 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005078 WILL_LJMP(lua_error(L));
5079
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005080 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005081}
5082
5083static int hlua_http_req_set_hdr(lua_State *L)
5084{
5085 struct hlua_txn *htxn;
5086
5087 MAY_LJMP(check_args(L, 3, "req_set_hdr"));
5088 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5089
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005090 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005091 WILL_LJMP(lua_error(L));
5092
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005093 hlua_http_del_hdr(L, &htxn->s->txn->req);
5094 return hlua_http_add_hdr(L, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005095}
5096
5097static int hlua_http_res_set_hdr(lua_State *L)
5098{
5099 struct hlua_txn *htxn;
5100
5101 MAY_LJMP(check_args(L, 3, "res_set_hdr"));
5102 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5103
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005104 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005105 WILL_LJMP(lua_error(L));
5106
Christopher Fauletd31c7b32020-02-25 09:37:57 +01005107 hlua_http_del_hdr(L, &htxn->s->txn->rsp);
5108 return hlua_http_add_hdr(L, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005109}
5110
5111/* This function set the method. */
5112static int hlua_http_req_set_meth(lua_State *L)
5113{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005114 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005115 size_t name_len;
5116 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005117
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005118 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005119 WILL_LJMP(lua_error(L));
5120
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005121 lua_pushboolean(L, http_req_replace_stline(0, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005122 return 1;
5123}
5124
5125/* This function set the method. */
5126static int hlua_http_req_set_path(lua_State *L)
5127{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005128 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005129 size_t name_len;
5130 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02005131
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005132 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005133 WILL_LJMP(lua_error(L));
5134
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005135 lua_pushboolean(L, http_req_replace_stline(1, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005136 return 1;
5137}
5138
5139/* This function set the query-string. */
5140static int hlua_http_req_set_query(lua_State *L)
5141{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005142 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005143 size_t name_len;
5144 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005145
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005146 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005147 WILL_LJMP(lua_error(L));
5148
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005149 /* Check length. */
5150 if (name_len > trash.size - 1) {
5151 lua_pushboolean(L, 0);
5152 return 1;
5153 }
5154
5155 /* Add the mark question as prefix. */
5156 chunk_reset(&trash);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005157 trash.area[trash.data++] = '?';
5158 memcpy(trash.area + trash.data, name, name_len);
5159 trash.data += name_len;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005160
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005161 lua_pushboolean(L,
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005162 http_req_replace_stline(2, trash.area, trash.data, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005163 return 1;
5164}
5165
5166/* This function set the uri. */
5167static int hlua_http_req_set_uri(lua_State *L)
5168{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005169 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005170 size_t name_len;
5171 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005172
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005173 if (htxn->dir != SMP_OPT_DIR_REQ || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005174 WILL_LJMP(lua_error(L));
5175
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005176 lua_pushboolean(L, http_req_replace_stline(3, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005177 return 1;
5178}
5179
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005180/* This function set the response code & optionally reason. */
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005181static int hlua_http_res_set_status(lua_State *L)
5182{
5183 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5184 unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
Christopher Faulet96bff762019-12-17 13:46:18 +01005185 const char *str = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
5186 const struct ist reason = ist2(str, (str ? strlen(str) : 0));
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005187
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005188 if (htxn->dir != SMP_OPT_DIR_RES || !IS_HTX_STRM(htxn->s))
Christopher Faulet84a6d5b2019-07-26 16:17:01 +02005189 WILL_LJMP(lua_error(L));
5190
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02005191 http_res_set_status(code, reason, htxn->s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005192 return 0;
5193}
5194
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005195/*
5196 *
5197 *
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005198 * Class TXN
5199 *
5200 *
5201 */
5202
5203/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02005204 * a class stream, otherwise it throws an error.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005205 */
5206__LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud)
5207{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005208 return MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005209}
5210
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005211__LJMP static int hlua_set_var(lua_State *L)
5212{
5213 struct hlua_txn *htxn;
5214 const char *name;
5215 size_t len;
5216 struct sample smp;
5217
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005218 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
5219 WILL_LJMP(luaL_error(L, "'set_var' needs between 3 and 4 arguments"));
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005220
5221 /* It is useles to retrieve the stream, but this function
5222 * runs only in a stream context.
5223 */
5224 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5225 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5226
5227 /* Converts the third argument in a sample. */
5228 hlua_lua2smp(L, 3, &smp);
5229
5230 /* Store the sample in a variable. */
Willy Tarreau7560dd42016-03-10 16:28:58 +01005231 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus4e172c92020-05-19 13:49:42 +02005232
5233 if (lua_gettop(L) == 4 && lua_toboolean(L, 4))
5234 lua_pushboolean(L, vars_set_by_name_ifexist(name, len, &smp) != 0);
5235 else
5236 lua_pushboolean(L, vars_set_by_name(name, len, &smp) != 0);
5237
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005238 return 1;
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005239}
5240
Christopher Faulet85d79c92016-11-09 16:54:56 +01005241__LJMP static int hlua_unset_var(lua_State *L)
5242{
5243 struct hlua_txn *htxn;
5244 const char *name;
5245 size_t len;
5246 struct sample smp;
5247
5248 MAY_LJMP(check_args(L, 2, "unset_var"));
5249
5250 /* It is useles to retrieve the stream, but this function
5251 * runs only in a stream context.
5252 */
5253 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5254 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5255
5256 /* Unset the variable. */
5257 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Tim Duesterhus84ebc132020-05-19 13:49:41 +02005258 lua_pushboolean(L, vars_unset_by_name_ifexist(name, len, &smp) != 0);
5259 return 1;
Christopher Faulet85d79c92016-11-09 16:54:56 +01005260}
5261
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005262__LJMP static int hlua_get_var(lua_State *L)
5263{
5264 struct hlua_txn *htxn;
5265 const char *name;
5266 size_t len;
5267 struct sample smp;
5268
5269 MAY_LJMP(check_args(L, 2, "get_var"));
5270
5271 /* It is useles to retrieve the stream, but this function
5272 * runs only in a stream context.
5273 */
5274 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5275 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5276
Willy Tarreau7560dd42016-03-10 16:28:58 +01005277 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01005278 if (!vars_get_by_name(name, len, &smp)) {
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005279 lua_pushnil(L);
5280 return 1;
5281 }
5282
5283 return hlua_smp2lua(L, &smp);
5284}
5285
Willy Tarreau59551662015-03-10 14:23:13 +01005286__LJMP static int hlua_set_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005287{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005288 struct hlua *hlua;
5289
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005290 MAY_LJMP(check_args(L, 2, "set_priv"));
5291
Willy Tarreau87b09662015-04-03 00:22:06 +02005292 /* It is useles to retrieve the stream, but this function
5293 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005294 */
5295 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005296 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005297
5298 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02005299 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005300
5301 /* Get and store new value. */
5302 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
5303 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
5304
5305 return 0;
5306}
5307
Willy Tarreau59551662015-03-10 14:23:13 +01005308__LJMP static int hlua_get_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005309{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005310 struct hlua *hlua;
5311
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005312 MAY_LJMP(check_args(L, 1, "get_priv"));
5313
Willy Tarreau87b09662015-04-03 00:22:06 +02005314 /* It is useles to retrieve the stream, but this function
5315 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005316 */
5317 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005318 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005319
5320 /* Push configuration index in the stack. */
5321 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
5322
5323 return 1;
5324}
5325
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005326/* Create stack entry containing a class TXN. This function
5327 * return 0 if the stack does not contains free slots,
5328 * otherwise it returns 1.
5329 */
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005330static int hlua_txn_new(lua_State *L, struct stream *s, struct proxy *p, int dir, int flags)
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005331{
Willy Tarreaude491382015-04-06 11:04:28 +02005332 struct hlua_txn *htxn;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005333
5334 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005335 if (!lua_checkstack(L, 3))
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005336 return 0;
5337
5338 /* NOTE: The allocation never fails. The failure
5339 * throw an error, and the function never returns.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005340 * if the throw is not available, the process is aborted.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005341 */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005342 /* Create the object: obj[0] = userdata. */
5343 lua_newtable(L);
Willy Tarreaude491382015-04-06 11:04:28 +02005344 htxn = lua_newuserdata(L, sizeof(*htxn));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005345 lua_rawseti(L, -2, 0);
5346
Willy Tarreaude491382015-04-06 11:04:28 +02005347 htxn->s = s;
5348 htxn->p = p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01005349 htxn->dir = dir;
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005350 htxn->flags = flags;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005351
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005352 /* Create the "f" field that contains a list of fetches. */
5353 lua_pushstring(L, "f");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005354 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005355 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005356 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005357
5358 /* Create the "sf" field that contains a list of stringsafe fetches. */
5359 lua_pushstring(L, "sf");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005360 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP | HLUA_F_AS_STRING))
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005361 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005362 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005363
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005364 /* Create the "c" field that contains a list of converters. */
5365 lua_pushstring(L, "c");
Willy Tarreaude491382015-04-06 11:04:28 +02005366 if (!hlua_converters_new(L, htxn, 0))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005367 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005368 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005369
5370 /* Create the "sc" field that contains a list of stringsafe converters. */
5371 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01005372 if (!hlua_converters_new(L, htxn, HLUA_F_AS_STRING))
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005373 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005374 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005375
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005376 /* Create the "req" field that contains the request channel object. */
5377 lua_pushstring(L, "req");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005378 if (!hlua_channel_new(L, &s->req))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005379 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005380 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005381
5382 /* Create the "res" field that contains the response channel object. */
5383 lua_pushstring(L, "res");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005384 if (!hlua_channel_new(L, &s->res))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005385 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005386 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005387
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005388 /* Creates the HTTP object is the current proxy allows http. */
5389 lua_pushstring(L, "http");
5390 if (p->mode == PR_MODE_HTTP) {
Willy Tarreaude491382015-04-06 11:04:28 +02005391 if (!hlua_http_new(L, htxn))
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005392 return 0;
5393 }
5394 else
5395 lua_pushnil(L);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005396 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005397
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005398 /* Pop a class sesison metatable and affect it to the userdata. */
5399 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref);
5400 lua_setmetatable(L, -2);
5401
5402 return 1;
5403}
5404
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005405__LJMP static int hlua_txn_deflog(lua_State *L)
5406{
5407 const char *msg;
5408 struct hlua_txn *htxn;
5409
5410 MAY_LJMP(check_args(L, 2, "deflog"));
5411 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5412 msg = MAY_LJMP(luaL_checkstring(L, 2));
5413
5414 hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg);
5415 return 0;
5416}
5417
5418__LJMP static int hlua_txn_log(lua_State *L)
5419{
5420 int level;
5421 const char *msg;
5422 struct hlua_txn *htxn;
5423
5424 MAY_LJMP(check_args(L, 3, "log"));
5425 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5426 level = MAY_LJMP(luaL_checkinteger(L, 2));
5427 msg = MAY_LJMP(luaL_checkstring(L, 3));
5428
5429 if (level < 0 || level >= NB_LOG_LEVELS)
5430 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
5431
5432 hlua_sendlog(htxn->s->be, level, msg);
5433 return 0;
5434}
5435
5436__LJMP static int hlua_txn_log_debug(lua_State *L)
5437{
5438 const char *msg;
5439 struct hlua_txn *htxn;
5440
5441 MAY_LJMP(check_args(L, 2, "Debug"));
5442 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5443 msg = MAY_LJMP(luaL_checkstring(L, 2));
5444 hlua_sendlog(htxn->s->be, LOG_DEBUG, msg);
5445 return 0;
5446}
5447
5448__LJMP static int hlua_txn_log_info(lua_State *L)
5449{
5450 const char *msg;
5451 struct hlua_txn *htxn;
5452
5453 MAY_LJMP(check_args(L, 2, "Info"));
5454 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5455 msg = MAY_LJMP(luaL_checkstring(L, 2));
5456 hlua_sendlog(htxn->s->be, LOG_INFO, msg);
5457 return 0;
5458}
5459
5460__LJMP static int hlua_txn_log_warning(lua_State *L)
5461{
5462 const char *msg;
5463 struct hlua_txn *htxn;
5464
5465 MAY_LJMP(check_args(L, 2, "Warning"));
5466 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5467 msg = MAY_LJMP(luaL_checkstring(L, 2));
5468 hlua_sendlog(htxn->s->be, LOG_WARNING, msg);
5469 return 0;
5470}
5471
5472__LJMP static int hlua_txn_log_alert(lua_State *L)
5473{
5474 const char *msg;
5475 struct hlua_txn *htxn;
5476
5477 MAY_LJMP(check_args(L, 2, "Alert"));
5478 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5479 msg = MAY_LJMP(luaL_checkstring(L, 2));
5480 hlua_sendlog(htxn->s->be, LOG_ALERT, msg);
5481 return 0;
5482}
5483
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005484__LJMP static int hlua_txn_set_loglevel(lua_State *L)
5485{
5486 struct hlua_txn *htxn;
5487 int ll;
5488
5489 MAY_LJMP(check_args(L, 2, "set_loglevel"));
5490 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5491 ll = MAY_LJMP(luaL_checkinteger(L, 2));
5492
5493 if (ll < 0 || ll > 7)
5494 WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
5495
5496 htxn->s->logs.level = ll;
5497 return 0;
5498}
5499
5500__LJMP static int hlua_txn_set_tos(lua_State *L)
5501{
5502 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005503 int tos;
5504
5505 MAY_LJMP(check_args(L, 2, "set_tos"));
5506 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5507 tos = MAY_LJMP(luaL_checkinteger(L, 2));
5508
Willy Tarreau1a18b542018-12-11 16:37:42 +01005509 conn_set_tos(objt_conn(htxn->s->sess->origin), tos);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005510 return 0;
5511}
5512
5513__LJMP static int hlua_txn_set_mark(lua_State *L)
5514{
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005515 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005516 int mark;
5517
5518 MAY_LJMP(check_args(L, 2, "set_mark"));
5519 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5520 mark = MAY_LJMP(luaL_checkinteger(L, 2));
5521
Lukas Tribus579e3e32019-08-11 18:03:45 +02005522 conn_set_mark(objt_conn(htxn->s->sess->origin), mark);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005523 return 0;
5524}
5525
Patrick Hemmer268a7072018-05-11 12:52:31 -04005526__LJMP static int hlua_txn_set_priority_class(lua_State *L)
5527{
5528 struct hlua_txn *htxn;
5529
5530 MAY_LJMP(check_args(L, 2, "set_priority_class"));
5531 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5532 htxn->s->priority_class = queue_limit_class(MAY_LJMP(luaL_checkinteger(L, 2)));
5533 return 0;
5534}
5535
5536__LJMP static int hlua_txn_set_priority_offset(lua_State *L)
5537{
5538 struct hlua_txn *htxn;
5539
5540 MAY_LJMP(check_args(L, 2, "set_priority_offset"));
5541 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5542 htxn->s->priority_offset = queue_limit_offset(MAY_LJMP(luaL_checkinteger(L, 2)));
5543 return 0;
5544}
5545
Christopher Faulet700d9e82020-01-31 12:21:52 +01005546/* Forward the Reply object to the client. This function converts the reply in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05005547 * HTX an push it to into the response channel. It is response to forward the
Christopher Faulet700d9e82020-01-31 12:21:52 +01005548 * message and terminate the transaction. It returns 1 on success and 0 on
5549 * error. The Reply must be on top of the stack.
5550 */
5551__LJMP static int hlua_txn_forward_reply(lua_State *L, struct stream *s)
5552{
5553 struct htx *htx;
5554 struct htx_sl *sl;
5555 struct h1m h1m;
5556 const char *status, *reason, *body;
5557 size_t status_len, reason_len, body_len;
5558 int ret, code, flags;
5559
5560 code = 200;
5561 status = "200";
5562 status_len = 3;
5563 ret = lua_getfield(L, -1, "status");
5564 if (ret == LUA_TNUMBER) {
5565 code = lua_tointeger(L, -1);
5566 status = lua_tolstring(L, -1, &status_len);
5567 }
5568 lua_pop(L, 1);
5569
5570 reason = http_get_reason(code);
5571 reason_len = strlen(reason);
5572 ret = lua_getfield(L, -1, "reason");
5573 if (ret == LUA_TSTRING)
5574 reason = lua_tolstring(L, -1, &reason_len);
5575 lua_pop(L, 1);
5576
5577 body = NULL;
5578 body_len = 0;
5579 ret = lua_getfield(L, -1, "body");
5580 if (ret == LUA_TSTRING)
5581 body = lua_tolstring(L, -1, &body_len);
5582 lua_pop(L, 1);
5583
5584 /* Prepare the response before inserting the headers */
5585 h1m_init_res(&h1m);
5586 htx = htx_from_buf(&s->res.buf);
5587 channel_htx_truncate(&s->res, htx);
5588 if (s->txn->req.flags & HTTP_MSGF_VER_11) {
5589 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
5590 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"),
5591 ist2(status, status_len), ist2(reason, reason_len));
5592 }
5593 else {
5594 flags = HTX_SL_F_IS_RESP;
5595 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"),
5596 ist2(status, status_len), ist2(reason, reason_len));
5597 }
5598 if (!sl)
5599 goto fail;
5600 sl->info.res.status = code;
5601
5602 /* Push in the stack the "headers" entry. */
5603 ret = lua_getfield(L, -1, "headers");
5604 if (ret != LUA_TTABLE)
5605 goto skip_headers;
5606
5607 lua_pushnil(L);
5608 while (lua_next(L, -2) != 0) {
5609 struct ist name, value;
5610 const char *n, *v;
5611 size_t nlen, vlen;
5612
5613 if (!lua_isstring(L, -2) || !lua_istable(L, -1)) {
5614 /* Skip element if the key is not a string or if the value is not a table */
5615 goto next_hdr;
5616 }
5617
5618 n = lua_tolstring(L, -2, &nlen);
5619 name = ist2(n, nlen);
5620 if (isteqi(name, ist("content-length"))) {
5621 /* Always skip content-length header. It will be added
5622 * later with the correct len
5623 */
5624 goto next_hdr;
5625 }
5626
5627 /* Loop on header's values */
5628 lua_pushnil(L);
5629 while (lua_next(L, -2)) {
5630 if (!lua_isstring(L, -1)) {
5631 /* Skip the value if it is not a string */
5632 goto next_value;
5633 }
5634
5635 v = lua_tolstring(L, -1, &vlen);
5636 value = ist2(v, vlen);
5637
5638 if (isteqi(name, ist("transfer-encoding")))
5639 h1_parse_xfer_enc_header(&h1m, value);
5640 if (!htx_add_header(htx, ist2(n, nlen), ist2(v, vlen)))
5641 goto fail;
5642
5643 next_value:
5644 lua_pop(L, 1);
5645 }
5646
5647 next_hdr:
5648 lua_pop(L, 1);
5649 }
5650 skip_headers:
5651 lua_pop(L, 1);
5652
5653 /* Update h1m flags: CLEN is set if CHNK is not present */
5654 if (!(h1m.flags & H1_MF_CHNK)) {
5655 const char *clen = ultoa(body_len);
5656
5657 h1m.flags |= H1_MF_CLEN;
5658 if (!htx_add_header(htx, ist("content-length"), ist(clen)))
5659 goto fail;
5660 }
5661 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
5662 h1m.flags |= H1_MF_XFER_LEN;
5663
5664 /* Update HTX start-line flags */
5665 if (h1m.flags & H1_MF_XFER_ENC)
5666 flags |= HTX_SL_F_XFER_ENC;
5667 if (h1m.flags & H1_MF_XFER_LEN) {
5668 flags |= HTX_SL_F_XFER_LEN;
5669 if (h1m.flags & H1_MF_CHNK)
5670 flags |= HTX_SL_F_CHNK;
5671 else if (h1m.flags & H1_MF_CLEN)
5672 flags |= HTX_SL_F_CLEN;
5673 if (h1m.body_len == 0)
5674 flags |= HTX_SL_F_BODYLESS;
5675 }
5676 sl->flags |= flags;
5677
5678
5679 if (!htx_add_endof(htx, HTX_BLK_EOH) ||
5680 (body_len && !htx_add_data_atonce(htx, ist2(body, body_len))) ||
5681 !htx_add_endof(htx, HTX_BLK_EOM))
5682 goto fail;
5683
5684 /* Now, forward the response and terminate the transaction */
5685 s->txn->status = code;
5686 htx_to_buf(htx, &s->res.buf);
5687 if (!http_forward_proxy_resp(s, 1))
5688 goto fail;
5689
5690 return 1;
5691
5692 fail:
5693 channel_htx_truncate(&s->res, htx);
5694 return 0;
5695}
5696
5697/* Terminate a transaction if called from a lua action. For TCP streams,
5698 * processing is just aborted. Nothing is returned to the client and all
5699 * arguments are ignored. For HTTP streams, if a reply is passed as argument, it
5700 * is forwarded to the client before terminating the transaction. On success,
5701 * the function exits with ACT_RET_DONE code. If an error occurred, it exits
5702 * with ACT_RET_ERR code. If this function is not called from a lua action, it
5703 * just exits without any processing.
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005704 */
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005705__LJMP static int hlua_txn_done(lua_State *L)
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005706{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005707 struct hlua_txn *htxn;
Christopher Faulet700d9e82020-01-31 12:21:52 +01005708 struct stream *s;
5709 int finst;
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005710
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005711 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005712
Christopher Faulet700d9e82020-01-31 12:21:52 +01005713 /* If the flags NOTERM is set, we cannot terminate the session, so we
5714 * just end the execution of the current lua code. */
5715 if (htxn->flags & HLUA_TXN_NOTERM)
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005716 WILL_LJMP(hlua_done(L));
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005717
Christopher Faulet700d9e82020-01-31 12:21:52 +01005718 s = htxn->s;
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005719 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005720 struct channel *req = &s->req;
5721 struct channel *res = &s->res;
Willy Tarreau81389672015-03-10 12:03:52 +01005722
Christopher Faulet700d9e82020-01-31 12:21:52 +01005723 channel_auto_read(req);
5724 channel_abort(req);
5725 channel_auto_close(req);
5726 channel_erase(req);
5727
5728 res->wex = tick_add_ifset(now_ms, res->wto);
5729 channel_auto_read(res);
5730 channel_auto_close(res);
5731 channel_shutr_now(res);
5732
5733 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_D);
5734 goto done;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005735 }
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02005736
Christopher Faulet700d9e82020-01-31 12:21:52 +01005737 if (lua_gettop(L) == 1 || !lua_istable(L, 2)) {
5738 /* No reply or invalid reply */
5739 s->txn->status = 0;
5740 http_reply_and_close(s, 0, NULL);
5741 }
5742 else {
5743 /* Remove extra args to have the reply on top of the stack */
5744 if (lua_gettop(L) > 2)
5745 lua_pop(L, lua_gettop(L) - 2);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005746
Christopher Faulet700d9e82020-01-31 12:21:52 +01005747 if (!hlua_txn_forward_reply(L, s)) {
5748 if (!(s->flags & SF_ERR_MASK))
5749 s->flags |= SF_ERR_PRXCOND;
5750 lua_pushinteger(L, ACT_RET_ERR);
5751 WILL_LJMP(hlua_done(L));
5752 return 0; /* Never reached */
5753 }
Christopher Faulet4d0e2632019-07-16 10:52:40 +02005754 }
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005755
Christopher Faulet700d9e82020-01-31 12:21:52 +01005756 finst = ((htxn->dir == SMP_OPT_DIR_REQ) ? SF_FINST_R : SF_FINST_H);
5757 if (htxn->dir == SMP_OPT_DIR_REQ) {
5758 /* let's log the request time */
5759 s->logs.tv_request = now;
5760 if (s->sess->fe == s->be) /* report it if the request was intercepted by the frontend */
5761 _HA_ATOMIC_ADD(&s->sess->fe->fe_counters.intercepted_req, 1);
5762 }
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005763
Christopher Faulet700d9e82020-01-31 12:21:52 +01005764 done:
5765 if (!(s->flags & SF_ERR_MASK))
5766 s->flags |= SF_ERR_LOCAL;
5767 if (!(s->flags & SF_FINST_MASK))
5768 s->flags |= finst;
Christopher Fauletfe6a71b2019-07-26 16:40:24 +02005769
Christopher Faulet4ad73102020-03-05 11:07:31 +01005770 lua_pushinteger(L, ACT_RET_ABRT);
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005771 WILL_LJMP(hlua_done(L));
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005772 return 0;
5773}
5774
Christopher Faulet700d9e82020-01-31 12:21:52 +01005775/*
5776 *
5777 *
5778 * Class REPLY
5779 *
5780 *
5781 */
5782
5783/* Pushes the TXN reply onto the top of the stack. If the stask does not have a
5784 * free slots, the function fails and returns 0;
5785 */
5786static int hlua_txn_reply_new(lua_State *L)
5787{
5788 struct hlua_txn *htxn;
5789 const char *reason, *body = NULL;
5790 int ret, status;
5791
5792 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Christopher Fauletd8f0e072020-02-25 09:45:51 +01005793 if (!IS_HTX_STRM(htxn->s)) {
Christopher Faulet700d9e82020-01-31 12:21:52 +01005794 hlua_pusherror(L, "txn object is not an HTTP transaction.");
5795 WILL_LJMP(lua_error(L));
5796 }
5797
5798 /* Default value */
5799 status = 200;
5800 reason = http_get_reason(status);
5801
5802 if (lua_istable(L, 2)) {
5803 /* load status and reason from the table argument at index 2 */
5804 ret = lua_getfield(L, 2, "status");
5805 if (ret == LUA_TNIL)
5806 goto reason;
5807 else if (ret != LUA_TNUMBER) {
5808 /* invalid status: ignore the reason */
5809 goto body;
5810 }
5811 status = lua_tointeger(L, -1);
5812
5813 reason:
5814 lua_pop(L, 1); /* restore the stack: remove status */
5815 ret = lua_getfield(L, 2, "reason");
5816 if (ret == LUA_TSTRING)
5817 reason = lua_tostring(L, -1);
5818
5819 body:
5820 lua_pop(L, 1); /* restore the stack: remove invalid status or reason */
5821 ret = lua_getfield(L, 2, "body");
5822 if (ret == LUA_TSTRING)
5823 body = lua_tostring(L, -1);
5824 lua_pop(L, 1); /* restore the stack: remove body */
5825 }
5826
5827 /* Create the Reply table */
5828 lua_newtable(L);
5829
5830 /* Add status element */
5831 lua_pushstring(L, "status");
5832 lua_pushinteger(L, status);
5833 lua_settable(L, -3);
5834
5835 /* Add reason element */
5836 reason = http_get_reason(status);
5837 lua_pushstring(L, "reason");
5838 lua_pushstring(L, reason);
5839 lua_settable(L, -3);
5840
5841 /* Add body element, nil if undefined */
5842 lua_pushstring(L, "body");
5843 if (body)
5844 lua_pushstring(L, body);
5845 else
5846 lua_pushnil(L);
5847 lua_settable(L, -3);
5848
5849 /* Add headers element */
5850 lua_pushstring(L, "headers");
5851 lua_newtable(L);
5852
5853 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
5854 if (lua_istable(L, 2)) {
5855 /* load headers from the table argument at index 2. If it is a table, copy it. */
5856 ret = lua_getfield(L, 2, "headers");
5857 if (ret == LUA_TTABLE) {
5858 /* stack: [ ... <headers:table>, <table> ] */
5859 lua_pushnil(L);
5860 while (lua_next(L, -2) != 0) {
5861 /* stack: [ ... <headers:table>, <table>, k, v] */
5862 if (!lua_isstring(L, -1) && !lua_istable(L, -1)) {
5863 /* invalid value type, skip it */
5864 lua_pop(L, 1);
5865 continue;
5866 }
5867
5868
5869 /* Duplicate the key and swap it with the value. */
5870 lua_pushvalue(L, -2);
5871 lua_insert(L, -2);
5872 /* stack: [ ... <headers:table>, <table>, k, k, v ] */
5873
5874 lua_newtable(L);
5875 lua_insert(L, -2);
5876 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, v ] */
5877
5878 if (lua_isstring(L, -1)) {
5879 /* push the value in the inner table */
5880 lua_rawseti(L, -2, 1);
5881 }
5882 else { /* table */
5883 lua_pushnil(L);
5884 while (lua_next(L, -2) != 0) {
5885 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2, v2 ] */
5886 if (!lua_isstring(L, -1)) {
5887 /* invalid value type, skip it*/
5888 lua_pop(L, 1);
5889 continue;
5890 }
5891 /* push the value in the inner table */
5892 lua_rawseti(L, -4, lua_rawlen(L, -4) + 1);
5893 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table>, <v:table>, k2 ] */
5894 }
5895 lua_pop(L, 1);
5896 /* stack: [ ... <headers:table>, <table>, k, k, <inner:table> ] */
5897 }
5898
5899 /* push (k,v) on the stack in the headers table:
5900 * stack: [ ... <headers:table>, <table>, k, k, v ]
5901 */
5902 lua_settable(L, -5);
5903 /* stack: [ ... <headers:table>, <table>, k ] */
5904 }
5905 }
5906 lua_pop(L, 1);
5907 }
5908 /* stack: [ txn, <Arg:table>, <Reply:table>, "headers", <headers:table> ] */
5909 lua_settable(L, -3);
5910 /* stack: [ txn, <Arg:table>, <Reply:table> ] */
5911
5912 /* Pop a class sesison metatable and affect it to the userdata. */
5913 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_reply_ref);
5914 lua_setmetatable(L, -2);
5915 return 1;
5916}
5917
5918/* Set the reply status code, and optionally the reason. If no reason is
5919 * provided, the default one corresponding to the status code is used.
5920 */
5921__LJMP static int hlua_txn_reply_set_status(lua_State *L)
5922{
5923 int status = MAY_LJMP(luaL_checkinteger(L, 2));
5924 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
5925
5926 /* First argument (self) must be a table */
5927 luaL_checktype(L, 1, LUA_TTABLE);
5928
5929 if (status < 100 || status > 599) {
5930 lua_pushboolean(L, 0);
5931 return 1;
5932 }
5933 if (!reason)
5934 reason = http_get_reason(status);
5935
5936 lua_pushinteger(L, status);
5937 lua_setfield(L, 1, "status");
5938
5939 lua_pushstring(L, reason);
5940 lua_setfield(L, 1, "reason");
5941
5942 lua_pushboolean(L, 1);
5943 return 1;
5944}
5945
5946/* Add a header into the reply object. Each header name is associated to an
5947 * array of values in the "headers" table. If the header name is not found, a
5948 * new entry is created.
5949 */
5950__LJMP static int hlua_txn_reply_add_header(lua_State *L)
5951{
5952 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
5953 const char *value = MAY_LJMP(luaL_checkstring(L, 3));
5954 int ret;
5955
5956 /* First argument (self) must be a table */
5957 luaL_checktype(L, 1, LUA_TTABLE);
5958
5959 /* Push in the stack the "headers" entry. */
5960 ret = lua_getfield(L, 1, "headers");
5961 if (ret != LUA_TTABLE) {
5962 hlua_pusherror(L, "Reply['headers'] is expected to a an array. %s found", lua_typename(L, ret));
5963 WILL_LJMP(lua_error(L));
5964 }
5965
5966 /* check if the header is already registered. If not, register it. */
5967 ret = lua_getfield(L, -1, name);
5968 if (ret == LUA_TNIL) {
5969 /* Entry not found. */
5970 lua_pop(L, 1); /* remove the nil. The "headers" table is the top of the stack. */
5971
5972 /* Insert the new header name in the array in the top of the stack.
5973 * It left the new array in the top of the stack.
5974 */
5975 lua_newtable(L);
5976 lua_pushstring(L, name);
5977 lua_pushvalue(L, -2);
5978 lua_settable(L, -4);
5979 }
5980 else if (ret != LUA_TTABLE) {
5981 hlua_pusherror(L, "Reply['headers']['%s'] is expected to be an array. %s found", name, lua_typename(L, ret));
5982 WILL_LJMP(lua_error(L));
5983 }
5984
5985 /* Now the top od thestack is an array of values. We push
5986 * the header value as new entry.
5987 */
5988 lua_pushstring(L, value);
5989 ret = lua_rawlen(L, -2);
5990 lua_rawseti(L, -2, ret + 1);
5991
5992 lua_pushboolean(L, 1);
5993 return 1;
5994}
5995
5996/* Remove all occurrences of a given header name. */
5997__LJMP static int hlua_txn_reply_del_header(lua_State *L)
5998{
5999 const char *name = MAY_LJMP(luaL_checkstring(L, 2));
6000 int ret;
6001
6002 /* First argument (self) must be a table */
6003 luaL_checktype(L, 1, LUA_TTABLE);
6004
6005 /* Push in the stack the "headers" entry. */
6006 ret = lua_getfield(L, 1, "headers");
6007 if (ret != LUA_TTABLE) {
6008 hlua_pusherror(L, "Reply['headers'] is expected to be an array. %s found", lua_typename(L, ret));
6009 WILL_LJMP(lua_error(L));
6010 }
6011
6012 lua_pushstring(L, name);
6013 lua_pushnil(L);
6014 lua_settable(L, -3);
6015
6016 lua_pushboolean(L, 1);
6017 return 1;
6018}
6019
6020/* Set the reply's body. Overwrite any existing entry. */
6021__LJMP static int hlua_txn_reply_set_body(lua_State *L)
6022{
6023 const char *payload = MAY_LJMP(luaL_checkstring(L, 2));
6024
6025 /* First argument (self) must be a table */
6026 luaL_checktype(L, 1, LUA_TTABLE);
6027
6028 lua_pushstring(L, payload);
6029 lua_setfield(L, 1, "body");
6030
6031 lua_pushboolean(L, 1);
6032 return 1;
6033}
6034
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01006035__LJMP static int hlua_log(lua_State *L)
6036{
6037 int level;
6038 const char *msg;
6039
6040 MAY_LJMP(check_args(L, 2, "log"));
6041 level = MAY_LJMP(luaL_checkinteger(L, 1));
6042 msg = MAY_LJMP(luaL_checkstring(L, 2));
6043
6044 if (level < 0 || level >= NB_LOG_LEVELS)
6045 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
6046
6047 hlua_sendlog(NULL, level, msg);
6048 return 0;
6049}
6050
6051__LJMP static int hlua_log_debug(lua_State *L)
6052{
6053 const char *msg;
6054
6055 MAY_LJMP(check_args(L, 1, "debug"));
6056 msg = MAY_LJMP(luaL_checkstring(L, 1));
6057 hlua_sendlog(NULL, LOG_DEBUG, msg);
6058 return 0;
6059}
6060
6061__LJMP static int hlua_log_info(lua_State *L)
6062{
6063 const char *msg;
6064
6065 MAY_LJMP(check_args(L, 1, "info"));
6066 msg = MAY_LJMP(luaL_checkstring(L, 1));
6067 hlua_sendlog(NULL, LOG_INFO, msg);
6068 return 0;
6069}
6070
6071__LJMP static int hlua_log_warning(lua_State *L)
6072{
6073 const char *msg;
6074
6075 MAY_LJMP(check_args(L, 1, "warning"));
6076 msg = MAY_LJMP(luaL_checkstring(L, 1));
6077 hlua_sendlog(NULL, LOG_WARNING, msg);
6078 return 0;
6079}
6080
6081__LJMP static int hlua_log_alert(lua_State *L)
6082{
6083 const char *msg;
6084
6085 MAY_LJMP(check_args(L, 1, "alert"));
6086 msg = MAY_LJMP(luaL_checkstring(L, 1));
6087 hlua_sendlog(NULL, LOG_ALERT, msg);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01006088 return 0;
6089}
6090
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006091__LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006092{
6093 int wakeup_ms = lua_tointeger(L, -1);
6094 if (now_ms < wakeup_ms)
Willy Tarreau9635e032018-10-16 17:52:55 +02006095 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006096 return 0;
6097}
6098
6099__LJMP static int hlua_sleep(lua_State *L)
6100{
6101 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006102 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006103
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006104 MAY_LJMP(check_args(L, 1, "sleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006105
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006106 delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006107 wakeup_ms = tick_add(now_ms, delay);
6108 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006109
Willy Tarreau9635e032018-10-16 17:52:55 +02006110 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006111 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006112}
6113
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006114__LJMP static int hlua_msleep(lua_State *L)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006115{
6116 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006117 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006118
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006119 MAY_LJMP(check_args(L, 1, "msleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006120
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006121 delay = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006122 wakeup_ms = tick_add(now_ms, delay);
6123 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006124
Willy Tarreau9635e032018-10-16 17:52:55 +02006125 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006126 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006127}
6128
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006129/* This functionis an LUA binding. it permits to give back
6130 * the hand at the HAProxy scheduler. It is used when the
6131 * LUA processing consumes a lot of time.
6132 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006133__LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006134{
6135 return 0;
6136}
6137
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006138__LJMP static int hlua_yield(lua_State *L)
6139{
Willy Tarreau9635e032018-10-16 17:52:55 +02006140 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006141 return 0;
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006142}
6143
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006144/* This function change the nice of the currently executed
6145 * task. It is used set low or high priority at the current
6146 * task.
6147 */
Willy Tarreau59551662015-03-10 14:23:13 +01006148__LJMP static int hlua_set_nice(lua_State *L)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006149{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006150 struct hlua *hlua;
6151 int nice;
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006152
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006153 MAY_LJMP(check_args(L, 1, "set_nice"));
6154 hlua = hlua_gethlua(L);
6155 nice = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006156
6157 /* If he task is not set, I'm in a start mode. */
6158 if (!hlua || !hlua->task)
6159 return 0;
6160
6161 if (nice < -1024)
6162 nice = -1024;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006163 else if (nice > 1024)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006164 nice = 1024;
6165
6166 hlua->task->nice = nice;
6167 return 0;
6168}
6169
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006170/* This function is used as a callback of a task. It is called by the
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006171 * HAProxy task subsystem when the task is awaked. The LUA runtime can
6172 * return an E_AGAIN signal, the emmiter of this signal must set a
6173 * signal to wake the task.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006174 *
6175 * Task wrapper are longjmp safe because the only one Lua code
6176 * executed is the safe hlua_ctx_resume();
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006177 */
Willy Tarreau60409db2019-08-21 14:14:50 +02006178struct task *hlua_process_task(struct task *task, void *context, unsigned short state)
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006179{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006180 struct hlua *hlua = context;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006181 enum hlua_exec status;
6182
Christopher Faulet5bc99722018-04-25 10:34:45 +02006183 if (task->thread_mask == MAX_THREADS_MASK)
6184 task_set_affinity(task, tid_bit);
6185
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006186 /* If it is the first call to the task, we must initialize the
6187 * execution timeouts.
6188 */
6189 if (!HLUA_IS_RUNNING(hlua))
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006190 hlua->max_time = hlua_timeout_task;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006191
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006192 /* Execute the Lua code. */
6193 status = hlua_ctx_resume(hlua, 1);
6194
6195 switch (status) {
6196 /* finished or yield */
6197 case HLUA_E_OK:
6198 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006199 task_destroy(task);
Tim Duesterhuscd235c62018-04-24 13:56:01 +02006200 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006201 break;
6202
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006203 case HLUA_E_AGAIN: /* co process or timeout wake me later. */
Thierry FOURNIERcb146882017-12-10 17:10:57 +01006204 notification_gc(&hlua->com);
PiBa-NLfe971b32018-05-02 22:27:14 +02006205 task->expire = hlua->wake_time;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006206 break;
6207
6208 /* finished with error. */
6209 case HLUA_E_ERRMSG:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006210 SEND_ERR(NULL, "Lua task: %s.\n", lua_tostring(hlua->T, -1));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006211 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006212 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006213 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006214 break;
6215
6216 case HLUA_E_ERR:
6217 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006218 SEND_ERR(NULL, "Lua task: unknown error.\n");
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006219 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006220 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006221 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006222 break;
6223 }
Emeric Brun253e53e2017-10-17 18:58:40 +02006224 return task;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006225}
6226
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006227/* This function is an LUA binding that register LUA function to be
6228 * executed after the HAProxy configuration parsing and before the
6229 * HAProxy scheduler starts. This function expect only one LUA
6230 * argument that is a function. This function returns nothing, but
6231 * throws if an error is encountered.
6232 */
6233__LJMP static int hlua_register_init(lua_State *L)
6234{
6235 struct hlua_init_function *init;
6236 int ref;
6237
6238 MAY_LJMP(check_args(L, 1, "register_init"));
6239
6240 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6241
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006242 init = calloc(1, sizeof(*init));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006243 if (!init)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006244 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006245
6246 init->function_ref = ref;
6247 LIST_ADDQ(&hlua_init_functions, &init->l);
6248 return 0;
6249}
6250
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006251/* This functio is an LUA binding. It permits to register a task
6252 * executed in parallel of the main HAroxy activity. The task is
6253 * created and it is set in the HAProxy scheduler. It can be called
6254 * from the "init" section, "post init" or during the runtime.
6255 *
6256 * Lua prototype:
6257 *
6258 * <none> core.register_task(<function>)
6259 */
6260static int hlua_register_task(lua_State *L)
6261{
6262 struct hlua *hlua;
6263 struct task *task;
6264 int ref;
6265
6266 MAY_LJMP(check_args(L, 1, "register_task"));
6267
6268 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6269
Willy Tarreaubafbe012017-11-24 17:34:44 +01006270 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006271 if (!hlua)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006272 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006273
Emeric Brunc60def82017-09-27 14:59:38 +02006274 task = task_new(MAX_THREADS_MASK);
Willy Tarreaue09101e2018-10-16 17:37:12 +02006275 if (!task)
6276 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
6277
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006278 task->context = hlua;
6279 task->process = hlua_process_task;
6280
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006281 if (!hlua_ctx_init(hlua, task, 1))
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006282 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006283
6284 /* Restore the function in the stack. */
6285 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref);
6286 hlua->nargs = 0;
6287
6288 /* Schedule task. */
6289 task_schedule(task, now_ms);
6290
6291 return 0;
6292}
6293
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006294/* Wrapper called by HAProxy to execute an LUA converter. This wrapper
6295 * doesn't allow "yield" functions because the HAProxy engine cannot
6296 * resume converters.
6297 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006298static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006299{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006300 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006301 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006302 const char *error;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006303
Willy Tarreaube508f12016-03-10 11:47:01 +01006304 if (!stream)
6305 return 0;
6306
Willy Tarreau87b09662015-04-03 00:22:06 +02006307 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006308 * Lua context can be not initialized. This behavior
6309 * permits to save performances because a systematic
6310 * Lua initialization cause 5% performances loss.
6311 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006312 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006313 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006314 if (!stream->hlua) {
6315 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6316 return 0;
6317 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006318 if (!hlua_ctx_init(stream->hlua, stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006319 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6320 return 0;
6321 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006322 }
6323
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006324 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006325 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006326
6327 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006328 if (!SET_SAFE_LJMP(stream->hlua->T)) {
6329 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6330 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006331 else
6332 error = "critical error";
6333 SEND_ERR(stream->be, "Lua converter '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006334 return 0;
6335 }
6336
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006337 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006338 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006339 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006340 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006341 return 0;
6342 }
6343
6344 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006345 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006346
6347 /* convert input sample and pust-it in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006348 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006349 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006350 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006351 return 0;
6352 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006353 hlua_smp2lua(stream->hlua->T, smp);
6354 stream->hlua->nargs = 1;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006355
6356 /* push keywords in the stack. */
6357 if (arg_p) {
6358 for (; arg_p->type != ARGT_STOP; arg_p++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006359 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006360 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006361 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006362 return 0;
6363 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006364 hlua_arg2lua(stream->hlua->T, arg_p);
6365 stream->hlua->nargs++;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006366 }
6367 }
6368
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006369 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006370 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006371
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006372 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006373 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006374 }
6375
6376 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006377 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006378 /* finished. */
6379 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006380 /* If the stack is empty, the function fails. */
6381 if (lua_gettop(stream->hlua->T) <= 0)
6382 return 0;
6383
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006384 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006385 hlua_lua2smp(stream->hlua->T, -1, smp);
6386 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006387 return 1;
6388
6389 /* yield. */
6390 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006391 SEND_ERR(stream->be, "Lua converter '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006392 return 0;
6393
6394 /* finished with error. */
6395 case HLUA_E_ERRMSG:
6396 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006397 SEND_ERR(stream->be, "Lua converter '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006398 fcn->name, lua_tostring(stream->hlua->T, -1));
6399 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006400 return 0;
6401
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006402 case HLUA_E_ETMOUT:
6403 SEND_ERR(stream->be, "Lua converter '%s': execution timeout.\n", fcn->name);
6404 return 0;
6405
6406 case HLUA_E_NOMEM:
6407 SEND_ERR(stream->be, "Lua converter '%s': out of memory error.\n", fcn->name);
6408 return 0;
6409
6410 case HLUA_E_YIELD:
6411 SEND_ERR(stream->be, "Lua converter '%s': yield functions like core.tcp() or core.sleep() are not allowed.\n", fcn->name);
6412 return 0;
6413
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006414 case HLUA_E_ERR:
6415 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006416 SEND_ERR(stream->be, "Lua converter '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006417 /* fall through */
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006418
6419 default:
6420 return 0;
6421 }
6422}
6423
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006424/* Wrapper called by HAProxy to execute a sample-fetch. this wrapper
6425 * doesn't allow "yield" functions because the HAProxy engine cannot
Willy Tarreaube508f12016-03-10 11:47:01 +01006426 * resume sample-fetches. This function will be called by the sample
6427 * fetch engine to call lua-based fetch operations.
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006428 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +02006429static int hlua_sample_fetch_wrapper(const struct arg *arg_p, struct sample *smp,
6430 const char *kw, void *private)
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006431{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006432 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006433 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006434 const char *error;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006435 unsigned int hflags = HLUA_TXN_NOTERM;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006436
Willy Tarreaube508f12016-03-10 11:47:01 +01006437 if (!stream)
6438 return 0;
Christopher Fauletafd8f102018-11-08 11:34:21 +01006439
Willy Tarreau87b09662015-04-03 00:22:06 +02006440 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006441 * Lua context can be not initialized. This behavior
6442 * permits to save performances because a systematic
6443 * Lua initialization cause 5% performances loss.
6444 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006445 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006446 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006447 if (!stream->hlua) {
6448 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6449 return 0;
6450 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006451 if (!hlua_ctx_init(stream->hlua, stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006452 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6453 return 0;
6454 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006455 }
6456
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006457 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006458 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006459
6460 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006461 if (!SET_SAFE_LJMP(stream->hlua->T)) {
6462 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6463 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006464 else
6465 error = "critical error";
6466 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006467 return 0;
6468 }
6469
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006470 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006471 if (!lua_checkstack(stream->hlua->T, 2)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006472 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006473 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006474 return 0;
6475 }
6476
6477 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006478 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006479
6480 /* push arguments in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006481 if (!hlua_txn_new(stream->hlua->T, stream, smp->px, smp->opt & SMP_OPT_DIR, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006482 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006483 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006484 return 0;
6485 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006486 stream->hlua->nargs = 1;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006487
6488 /* push keywords in the stack. */
6489 for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) {
6490 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006491 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006492 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006493 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006494 return 0;
6495 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006496 hlua_arg2lua(stream->hlua->T, arg_p);
6497 stream->hlua->nargs++;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006498 }
6499
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006500 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006501 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006502
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006503 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006504 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006505 }
6506
6507 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006508 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006509 /* finished. */
6510 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006511 /* If the stack is empty, the function fails. */
6512 if (lua_gettop(stream->hlua->T) <= 0)
6513 return 0;
6514
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006515 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006516 hlua_lua2smp(stream->hlua->T, -1, smp);
6517 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006518
6519 /* Set the end of execution flag. */
6520 smp->flags &= ~SMP_F_MAY_CHANGE;
6521 return 1;
6522
6523 /* yield. */
6524 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006525 SEND_ERR(smp->px, "Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006526 return 0;
6527
6528 /* finished with error. */
6529 case HLUA_E_ERRMSG:
6530 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006531 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006532 fcn->name, lua_tostring(stream->hlua->T, -1));
6533 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006534 return 0;
6535
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006536 case HLUA_E_ETMOUT:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006537 SEND_ERR(smp->px, "Lua sample-fetch '%s': execution timeout.\n", fcn->name);
6538 return 0;
6539
6540 case HLUA_E_NOMEM:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006541 SEND_ERR(smp->px, "Lua sample-fetch '%s': out of memory error.\n", fcn->name);
6542 return 0;
6543
6544 case HLUA_E_YIELD:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006545 SEND_ERR(smp->px, "Lua sample-fetch '%s': yield not allowed.\n", fcn->name);
6546 return 0;
6547
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006548 case HLUA_E_ERR:
6549 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006550 SEND_ERR(smp->px, "Lua sample-fetch '%s' returns an unknown error.\n", fcn->name);
Tim Duesterhus588b3142020-05-29 14:35:51 +02006551 /* fall through */
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006552
6553 default:
6554 return 0;
6555 }
6556}
6557
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006558/* This function is an LUA binding used for registering
6559 * "sample-conv" functions. It expects a converter name used
6560 * in the haproxy configuration file, and an LUA function.
6561 */
6562__LJMP static int hlua_register_converters(lua_State *L)
6563{
6564 struct sample_conv_kw_list *sck;
6565 const char *name;
6566 int ref;
6567 int len;
6568 struct hlua_function *fcn;
6569
6570 MAY_LJMP(check_args(L, 2, "register_converters"));
6571
6572 /* First argument : converter name. */
6573 name = MAY_LJMP(luaL_checkstring(L, 1));
6574
6575 /* Second argument : lua function. */
6576 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6577
6578 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006579 sck = calloc(1, sizeof(*sck) + sizeof(struct sample_conv) * 2);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006580 if (!sck)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006581 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006582 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006583 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006584 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006585
6586 /* Fill fcn. */
6587 fcn->name = strdup(name);
6588 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006589 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006590 fcn->function_ref = ref;
6591
6592 /* List head */
6593 sck->list.n = sck->list.p = NULL;
6594
6595 /* converter keyword. */
6596 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006597 sck->kw[0].kw = calloc(1, len);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006598 if (!sck->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006599 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006600
6601 snprintf((char *)sck->kw[0].kw, len, "lua.%s", name);
6602 sck->kw[0].process = hlua_sample_conv_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006603 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 +01006604 sck->kw[0].val_args = NULL;
6605 sck->kw[0].in_type = SMP_T_STR;
6606 sck->kw[0].out_type = SMP_T_STR;
6607 sck->kw[0].private = fcn;
6608
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006609 /* Register this new converter */
6610 sample_register_convs(sck);
6611
6612 return 0;
6613}
6614
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006615/* This function is an LUA binding used for registering
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006616 * "sample-fetch" functions. It expects a converter name used
6617 * in the haproxy configuration file, and an LUA function.
6618 */
6619__LJMP static int hlua_register_fetches(lua_State *L)
6620{
6621 const char *name;
6622 int ref;
6623 int len;
6624 struct sample_fetch_kw_list *sfk;
6625 struct hlua_function *fcn;
6626
6627 MAY_LJMP(check_args(L, 2, "register_fetches"));
6628
6629 /* First argument : sample-fetch name. */
6630 name = MAY_LJMP(luaL_checkstring(L, 1));
6631
6632 /* Second argument : lua function. */
6633 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6634
6635 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006636 sfk = calloc(1, sizeof(*sfk) + sizeof(struct sample_fetch) * 2);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006637 if (!sfk)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006638 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006639 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006640 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006641 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006642
6643 /* Fill fcn. */
6644 fcn->name = strdup(name);
6645 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006646 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006647 fcn->function_ref = ref;
6648
6649 /* List head */
6650 sfk->list.n = sfk->list.p = NULL;
6651
6652 /* sample-fetch keyword. */
6653 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006654 sfk->kw[0].kw = calloc(1, len);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006655 if (!sfk->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006656 return luaL_error(L, "Lua out of memory error.");
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006657
6658 snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name);
6659 sfk->kw[0].process = hlua_sample_fetch_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006660 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 +01006661 sfk->kw[0].val_args = NULL;
6662 sfk->kw[0].out_type = SMP_T_STR;
6663 sfk->kw[0].use = SMP_USE_HTTP_ANY;
6664 sfk->kw[0].val = 0;
6665 sfk->kw[0].private = fcn;
6666
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006667 /* Register this new fetch. */
6668 sample_register_fetches(sfk);
6669
6670 return 0;
6671}
6672
Christopher Faulet501465d2020-02-26 14:54:16 +01006673/* This function is a lua binding to set the wake_time.
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006674 */
Christopher Faulet501465d2020-02-26 14:54:16 +01006675__LJMP static int hlua_set_wake_time(lua_State *L)
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006676{
6677 struct hlua *hlua = hlua_gethlua(L);
6678 unsigned int delay;
6679 unsigned int wakeup_ms;
6680
6681 MAY_LJMP(check_args(L, 1, "wake_time"));
6682
6683 delay = MAY_LJMP(luaL_checkinteger(L, 1));
6684 wakeup_ms = tick_add(now_ms, delay);
6685 hlua->wake_time = wakeup_ms;
6686 return 0;
6687}
6688
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006689/* This function is a wrapper to execute each LUA function declared as an action
6690 * wrapper during the initialisation period. This function may return any
6691 * ACT_RET_* value. On error ACT_RET_CONT is returned and the action is
6692 * ignored. If the lua action yields, ACT_RET_YIELD is returned. On success, the
6693 * return value is the first element on the stack.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006694 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006695static enum act_return hlua_action(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +02006696 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006697{
6698 char **arg;
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006699 unsigned int hflags = 0;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006700 int dir, act_ret = ACT_RET_CONT;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006701 const char *error;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006702
6703 switch (rule->from) {
Christopher Fauletd8f0e072020-02-25 09:45:51 +01006704 case ACT_F_TCP_REQ_CNT: dir = SMP_OPT_DIR_REQ; break;
6705 case ACT_F_TCP_RES_CNT: dir = SMP_OPT_DIR_RES; break;
6706 case ACT_F_HTTP_REQ: dir = SMP_OPT_DIR_REQ; break;
6707 case ACT_F_HTTP_RES: dir = SMP_OPT_DIR_RES; break;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006708 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006709 SEND_ERR(px, "Lua: internal error while execute action.\n");
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006710 goto end;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006711 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006712
Willy Tarreau87b09662015-04-03 00:22:06 +02006713 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006714 * Lua context can be not initialized. This behavior
6715 * permits to save performances because a systematic
6716 * Lua initialization cause 5% performances loss.
6717 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006718 if (!s->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006719 s->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006720 if (!s->hlua) {
6721 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
6722 rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006723 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006724 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006725 if (!hlua_ctx_init(s->hlua, s->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006726 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
6727 rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006728 goto end;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006729 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006730 }
6731
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006732 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006733 if (!HLUA_IS_RUNNING(s->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006734
6735 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006736 if (!SET_SAFE_LJMP(s->hlua->T)) {
6737 if (lua_type(s->hlua->T, -1) == LUA_TSTRING)
6738 error = lua_tostring(s->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006739 else
6740 error = "critical error";
6741 SEND_ERR(px, "Lua function '%s': %s.\n",
6742 rule->arg.hlua_rule->fcn.name, error);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006743 goto end;
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006744 }
6745
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006746 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006747 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006748 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006749 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006750 RESET_SAFE_LJMP(s->hlua->T);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006751 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006752 }
6753
6754 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006755 lua_rawgeti(s->hlua->T, LUA_REGISTRYINDEX, rule->arg.hlua_rule->fcn.function_ref);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006756
Willy Tarreau87b09662015-04-03 00:22:06 +02006757 /* Create and and push object stream in the stack. */
Christopher Fauletbfab2dd2019-07-26 15:09:53 +02006758 if (!hlua_txn_new(s->hlua->T, s, px, dir, hflags)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006759 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006760 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006761 RESET_SAFE_LJMP(s->hlua->T);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006762 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006763 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006764 s->hlua->nargs = 1;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006765
6766 /* push keywords in the stack. */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006767 for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006768 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006769 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006770 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006771 RESET_SAFE_LJMP(s->hlua->T);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006772 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006773 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006774 lua_pushstring(s->hlua->T, *arg);
6775 s->hlua->nargs++;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006776 }
6777
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006778 /* Now the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006779 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006780
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006781 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006782 s->hlua->max_time = hlua_timeout_session;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006783 }
6784
6785 /* Execute the function. */
Christopher Faulet105ba6c2019-12-18 14:41:51 +01006786 switch (hlua_ctx_resume(s->hlua, !(flags & ACT_OPT_FINAL))) {
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006787 /* finished. */
6788 case HLUA_E_OK:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006789 /* Catch the return value */
6790 if (lua_gettop(s->hlua->T) > 0)
6791 act_ret = lua_tointeger(s->hlua->T, -1);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006792
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006793 /* Set timeout in the required channel. */
Christopher Faulet498c4832020-07-28 11:59:58 +02006794 if (act_ret == ACT_RET_YIELD) {
6795 if (flags & ACT_OPT_FINAL)
6796 goto err_yield;
6797
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006798 if (dir == SMP_OPT_DIR_REQ)
6799 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
6800 s->hlua->wake_time);
6801 else
6802 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
6803 s->hlua->wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01006804 }
6805 goto end;
6806
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006807 /* yield. */
6808 case HLUA_E_AGAIN:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006809 /* Set timeout in the required channel. */
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006810 if (dir == SMP_OPT_DIR_REQ)
6811 s->req.analyse_exp = tick_first((tick_is_expired(s->req.analyse_exp, now_ms) ? 0 : s->req.analyse_exp),
6812 s->hlua->wake_time);
6813 else
6814 s->res.analyse_exp = tick_first((tick_is_expired(s->res.analyse_exp, now_ms) ? 0 : s->res.analyse_exp),
6815 s->hlua->wake_time);
6816
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006817 /* Some actions can be wake up when a "write" event
6818 * is detected on a response channel. This is useful
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006819 * only for actions targeted on the requests.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006820 */
Christopher Faulet51fa3582019-07-26 14:54:52 +02006821 if (HLUA_IS_WAKERESWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01006822 s->res.flags |= CF_WAKE_WRITE;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006823 if (HLUA_IS_WAKEREQWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01006824 s->req.flags |= CF_WAKE_WRITE;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006825 act_ret = ACT_RET_YIELD;
6826 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006827
6828 /* finished with error. */
6829 case HLUA_E_ERRMSG:
6830 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006831 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006832 rule->arg.hlua_rule->fcn.name, lua_tostring(s->hlua->T, -1));
6833 lua_pop(s->hlua->T, 1);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006834 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006835
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006836 case HLUA_E_ETMOUT:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006837 SEND_ERR(px, "Lua function '%s': execution timeout.\n", rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006838 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006839
6840 case HLUA_E_NOMEM:
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006841 SEND_ERR(px, "Lua function '%s': out of memory error.\n", rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006842 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006843
6844 case HLUA_E_YIELD:
Christopher Faulet498c4832020-07-28 11:59:58 +02006845 err_yield:
6846 act_ret = ACT_RET_CONT;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006847 SEND_ERR(px, "Lua function '%s': aborting Lua processing on expired timeout.\n",
6848 rule->arg.hlua_rule->fcn.name);
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006849 goto end;
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006850
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006851 case HLUA_E_ERR:
6852 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006853 SEND_ERR(px, "Lua function '%s' return an unknown error.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006854 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006855
6856 default:
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006857 goto end;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006858 }
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006859
6860 end:
Christopher Faulet2361fd92020-07-30 10:40:58 +02006861 if (act_ret != ACT_RET_YIELD && s->hlua)
Christopher Faulet8f587ea2020-07-28 12:01:55 +02006862 s->hlua->wake_time = TICK_ETERNITY;
Christopher Faulet7716cdf2020-01-29 11:53:30 +01006863 return act_ret;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006864}
6865
Olivier Houchard9f6af332018-05-25 14:04:04 +02006866struct task *hlua_applet_wakeup(struct task *t, void *context, unsigned short state)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006867{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006868 struct appctx *ctx = context;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006869
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006870 appctx_wakeup(ctx);
Willy Tarreaud9587412017-08-23 16:07:33 +02006871 t->expire = TICK_ETERNITY;
Willy Tarreaud1aa41f2017-07-21 16:41:56 +02006872 return t;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006873}
6874
6875static int hlua_applet_tcp_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
6876{
6877 struct stream_interface *si = ctx->owner;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006878 struct hlua *hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006879 struct task *task;
6880 char **arg;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006881 const char *error;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006882
Willy Tarreaubafbe012017-11-24 17:34:44 +01006883 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006884 if (!hlua) {
6885 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
6886 ctx->rule->arg.hlua_rule->fcn.name);
6887 return 0;
6888 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006889 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006890 ctx->ctx.hlua_apptcp.hlua = hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006891 ctx->ctx.hlua_apptcp.flags = 0;
6892
6893 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01006894 task = task_new(tid_bit);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006895 if (!task) {
6896 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
6897 ctx->rule->arg.hlua_rule->fcn.name);
6898 return 0;
6899 }
6900 task->nice = 0;
6901 task->context = ctx;
6902 task->process = hlua_applet_wakeup;
6903 ctx->ctx.hlua_apptcp.task = task;
6904
6905 /* In the execution wrappers linked with a stream, the
6906 * Lua context can be not initialized. This behavior
6907 * permits to save performances because a systematic
6908 * Lua initialization cause 5% performances loss.
6909 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006910 if (!hlua_ctx_init(hlua, task, 0)) {
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006911 SEND_ERR(px, "Lua applet tcp '%s': can't initialize Lua context.\n",
6912 ctx->rule->arg.hlua_rule->fcn.name);
6913 return 0;
6914 }
6915
6916 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006917 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006918
6919 /* The following Lua calls can fail. */
6920 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01006921 if (lua_type(hlua->T, -1) == LUA_TSTRING)
6922 error = lua_tostring(hlua->T, -1);
6923 else
6924 error = "critical error";
6925 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
6926 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006927 return 0;
6928 }
6929
6930 /* Check stack available size. */
6931 if (!lua_checkstack(hlua->T, 1)) {
6932 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6933 ctx->rule->arg.hlua_rule->fcn.name);
6934 RESET_SAFE_LJMP(hlua->T);
6935 return 0;
6936 }
6937
6938 /* Restore the function in the stack. */
6939 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
6940
6941 /* Create and and push object stream in the stack. */
6942 if (!hlua_applet_tcp_new(hlua->T, ctx)) {
6943 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6944 ctx->rule->arg.hlua_rule->fcn.name);
6945 RESET_SAFE_LJMP(hlua->T);
6946 return 0;
6947 }
6948 hlua->nargs = 1;
6949
6950 /* push keywords in the stack. */
6951 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
6952 if (!lua_checkstack(hlua->T, 1)) {
6953 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6954 ctx->rule->arg.hlua_rule->fcn.name);
6955 RESET_SAFE_LJMP(hlua->T);
6956 return 0;
6957 }
6958 lua_pushstring(hlua->T, *arg);
6959 hlua->nargs++;
6960 }
6961
6962 RESET_SAFE_LJMP(hlua->T);
6963
6964 /* Wakeup the applet ASAP. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01006965 si_cant_get(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01006966 si_rx_endp_more(si);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006967
6968 return 1;
6969}
6970
Willy Tarreau60409db2019-08-21 14:14:50 +02006971void hlua_applet_tcp_fct(struct appctx *ctx)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006972{
6973 struct stream_interface *si = ctx->owner;
6974 struct stream *strm = si_strm(si);
6975 struct channel *res = si_ic(si);
6976 struct act_rule *rule = ctx->rule;
6977 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006978 struct hlua *hlua = ctx->ctx.hlua_apptcp.hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006979
6980 /* The applet execution is already done. */
Olivier Houchard594c8c52018-08-28 14:41:31 +02006981 if (ctx->ctx.hlua_apptcp.flags & APPLET_DONE) {
6982 /* eat the whole request */
6983 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006984 return;
Olivier Houchard594c8c52018-08-28 14:41:31 +02006985 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006986
6987 /* If the stream is disconnect or closed, ldo nothing. */
6988 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
6989 return;
6990
6991 /* Execute the function. */
6992 switch (hlua_ctx_resume(hlua, 1)) {
6993 /* finished. */
6994 case HLUA_E_OK:
6995 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
6996
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006997 /* eat the whole request */
Willy Tarreaua79021a2018-06-15 18:07:57 +02006998 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006999 res->flags |= CF_READ_NULL;
7000 si_shutr(si);
7001 return;
7002
7003 /* yield. */
7004 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01007005 if (hlua->wake_time != TICK_ETERNITY)
7006 task_schedule(ctx->ctx.hlua_apptcp.task, hlua->wake_time);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007007 return;
7008
7009 /* finished with error. */
7010 case HLUA_E_ERRMSG:
7011 /* Display log. */
7012 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
7013 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7014 lua_pop(hlua->T, 1);
7015 goto error;
7016
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007017 case HLUA_E_ETMOUT:
7018 SEND_ERR(px, "Lua applet tcp '%s': execution timeout.\n",
7019 rule->arg.hlua_rule->fcn.name);
7020 goto error;
7021
7022 case HLUA_E_NOMEM:
7023 SEND_ERR(px, "Lua applet tcp '%s': out of memory error.\n",
7024 rule->arg.hlua_rule->fcn.name);
7025 goto error;
7026
7027 case HLUA_E_YIELD: /* unexpected */
7028 SEND_ERR(px, "Lua applet tcp '%s': yield not allowed.\n",
7029 rule->arg.hlua_rule->fcn.name);
7030 goto error;
7031
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007032 case HLUA_E_ERR:
7033 /* Display log. */
7034 SEND_ERR(px, "Lua applet tcp '%s' return an unknown error.\n",
7035 rule->arg.hlua_rule->fcn.name);
7036 goto error;
7037
7038 default:
7039 goto error;
7040 }
7041
7042error:
7043
7044 /* For all other cases, just close the stream. */
7045 si_shutw(si);
7046 si_shutr(si);
7047 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7048}
7049
7050static void hlua_applet_tcp_release(struct appctx *ctx)
7051{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007052 task_destroy(ctx->ctx.hlua_apptcp.task);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007053 ctx->ctx.hlua_apptcp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007054 hlua_ctx_destroy(ctx->ctx.hlua_apptcp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007055 ctx->ctx.hlua_apptcp.hlua = NULL;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007056}
7057
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007058/* The function returns 1 if the initialisation is complete, 0 if
7059 * an errors occurs and -1 if more data are required for initializing
7060 * the applet.
7061 */
7062static int hlua_applet_http_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7063{
7064 struct stream_interface *si = ctx->owner;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007065 struct http_txn *txn;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007066 struct hlua *hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007067 char **arg;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007068 struct task *task;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007069 const char *error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007070
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007071 txn = strm->txn;
Willy Tarreaubafbe012017-11-24 17:34:44 +01007072 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007073 if (!hlua) {
7074 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
7075 ctx->rule->arg.hlua_rule->fcn.name);
7076 return 0;
7077 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007078 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007079 ctx->ctx.hlua_apphttp.hlua = hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007080 ctx->ctx.hlua_apphttp.left_bytes = -1;
7081 ctx->ctx.hlua_apphttp.flags = 0;
7082
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01007083 if (txn->req.flags & HTTP_MSGF_VER_11)
7084 ctx->ctx.hlua_apphttp.flags |= APPLET_HTTP11;
7085
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007086 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007087 task = task_new(tid_bit);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007088 if (!task) {
7089 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
7090 ctx->rule->arg.hlua_rule->fcn.name);
7091 return 0;
7092 }
7093 task->nice = 0;
7094 task->context = ctx;
7095 task->process = hlua_applet_wakeup;
7096 ctx->ctx.hlua_apphttp.task = task;
7097
7098 /* In the execution wrappers linked with a stream, the
7099 * Lua context can be not initialized. This behavior
7100 * permits to save performances because a systematic
7101 * Lua initialization cause 5% performances loss.
7102 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01007103 if (!hlua_ctx_init(hlua, task, 0)) {
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007104 SEND_ERR(px, "Lua applet http '%s': can't initialize Lua context.\n",
7105 ctx->rule->arg.hlua_rule->fcn.name);
7106 return 0;
7107 }
7108
7109 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007110 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007111
7112 /* The following Lua calls can fail. */
7113 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007114 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7115 error = lua_tostring(hlua->T, -1);
7116 else
7117 error = "critical error";
7118 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7119 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007120 return 0;
7121 }
7122
7123 /* Check stack available size. */
7124 if (!lua_checkstack(hlua->T, 1)) {
7125 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7126 ctx->rule->arg.hlua_rule->fcn.name);
7127 RESET_SAFE_LJMP(hlua->T);
7128 return 0;
7129 }
7130
7131 /* Restore the function in the stack. */
7132 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
7133
7134 /* Create and and push object stream in the stack. */
7135 if (!hlua_applet_http_new(hlua->T, ctx)) {
7136 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7137 ctx->rule->arg.hlua_rule->fcn.name);
7138 RESET_SAFE_LJMP(hlua->T);
7139 return 0;
7140 }
7141 hlua->nargs = 1;
7142
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007143 /* push keywords in the stack. */
7144 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7145 if (!lua_checkstack(hlua->T, 1)) {
7146 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7147 ctx->rule->arg.hlua_rule->fcn.name);
7148 RESET_SAFE_LJMP(hlua->T);
7149 return 0;
7150 }
7151 lua_pushstring(hlua->T, *arg);
7152 hlua->nargs++;
7153 }
7154
7155 RESET_SAFE_LJMP(hlua->T);
7156
7157 /* Wakeup the applet when data is ready for read. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007158 si_cant_get(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007159
7160 return 1;
7161}
7162
Willy Tarreau60409db2019-08-21 14:14:50 +02007163void hlua_applet_http_fct(struct appctx *ctx)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007164{
7165 struct stream_interface *si = ctx->owner;
7166 struct stream *strm = si_strm(si);
7167 struct channel *req = si_oc(si);
7168 struct channel *res = si_ic(si);
7169 struct act_rule *rule = ctx->rule;
7170 struct proxy *px = strm->be;
7171 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
7172 struct htx *req_htx, *res_htx;
7173
7174 res_htx = htx_from_buf(&res->buf);
7175
7176 /* If the stream is disconnect or closed, ldo nothing. */
7177 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7178 goto out;
7179
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007180 /* Check if the input buffer is available. */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007181 if (!b_size(&res->buf)) {
7182 si_rx_room_blk(si);
7183 goto out;
7184 }
7185 /* check that the output is not closed */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007186 if (res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_SHUTR))
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007187 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7188
7189 /* Set the currently running flag. */
7190 if (!HLUA_IS_RUNNING(hlua) &&
7191 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7192 struct htx_blk *blk;
7193 size_t count = co_data(req);
7194
7195 if (!count) {
7196 si_cant_get(si);
7197 goto out;
7198 }
7199
7200 /* We need to flush the request header. This left the body for
7201 * the Lua.
7202 */
7203 req_htx = htx_from_buf(&req->buf);
Christopher Fauleta3f15502019-05-13 15:27:23 +02007204 blk = htx_get_first_blk(req_htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007205 while (count && blk) {
7206 enum htx_blk_type type = htx_get_blk_type(blk);
7207 uint32_t sz = htx_get_blksz(blk);
7208
7209 if (sz > count) {
7210 si_cant_get(si);
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007211 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007212 goto out;
7213 }
7214
7215 count -= sz;
7216 co_set_data(req, co_data(req) - sz);
7217 blk = htx_remove_blk(req_htx, blk);
7218
7219 if (type == HTX_BLK_EOH)
7220 break;
7221 }
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007222 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007223 }
7224
7225 /* Executes The applet if it is not done. */
7226 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7227
7228 /* Execute the function. */
7229 switch (hlua_ctx_resume(hlua, 1)) {
7230 /* finished. */
7231 case HLUA_E_OK:
7232 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7233 break;
7234
7235 /* yield. */
7236 case HLUA_E_AGAIN:
7237 if (hlua->wake_time != TICK_ETERNITY)
7238 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007239 goto out;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007240
7241 /* finished with error. */
7242 case HLUA_E_ERRMSG:
7243 /* Display log. */
7244 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7245 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7246 lua_pop(hlua->T, 1);
7247 goto error;
7248
7249 case HLUA_E_ETMOUT:
7250 SEND_ERR(px, "Lua applet http '%s': execution timeout.\n",
7251 rule->arg.hlua_rule->fcn.name);
7252 goto error;
7253
7254 case HLUA_E_NOMEM:
7255 SEND_ERR(px, "Lua applet http '%s': out of memory error.\n",
7256 rule->arg.hlua_rule->fcn.name);
7257 goto error;
7258
7259 case HLUA_E_YIELD: /* unexpected */
7260 SEND_ERR(px, "Lua applet http '%s': yield not allowed.\n",
7261 rule->arg.hlua_rule->fcn.name);
7262 goto error;
7263
7264 case HLUA_E_ERR:
7265 /* Display log. */
7266 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\n",
7267 rule->arg.hlua_rule->fcn.name);
7268 goto error;
7269
7270 default:
7271 goto error;
7272 }
7273 }
7274
7275 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007276 if (ctx->ctx.hlua_apphttp.flags & APPLET_RSP_SENT)
7277 goto done;
7278
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007279 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT))
7280 goto error;
7281
Christopher Faulet54b5e212019-06-04 10:08:28 +02007282 /* Don't add TLR because mux-h1 will take care of it */
Willy Tarreauf1ea47d2020-07-23 06:53:27 +02007283 res_htx->flags |= HTX_FL_EOI; /* no more data are expected. Only EOM remains to add now */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007284 if (!htx_add_endof(res_htx, HTX_BLK_EOM)) {
7285 si_rx_room_blk(si);
7286 goto out;
7287 }
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007288 channel_add_input(res, 1);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007289 strm->txn->status = ctx->ctx.hlua_apphttp.status;
7290 ctx->ctx.hlua_apphttp.flags |= APPLET_RSP_SENT;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007291 }
7292
7293 done:
7294 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007295 if (!(res->flags & CF_SHUTR)) {
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007296 res->flags |= CF_READ_NULL;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007297 si_shutr(si);
7298 }
7299
7300 /* eat the whole request */
7301 if (co_data(req)) {
7302 req_htx = htx_from_buf(&req->buf);
7303 co_htx_skip(req, req_htx, co_data(req));
7304 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007305 }
7306 }
7307
7308 out:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007309 htx_to_buf(res_htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007310 return;
7311
7312 error:
7313
7314 /* If we are in HTTP mode, and we are not send any
7315 * data, return a 500 server error in best effort:
7316 * if there is no room available in the buffer,
7317 * just close the connection.
7318 */
7319 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
Christopher Fauletf7346382019-07-17 22:02:08 +02007320 struct buffer *err = &http_err_chunks[HTTP_ERR_500];
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007321
7322 channel_erase(res);
7323 res->buf.data = b_data(err);
7324 memcpy(res->buf.area, b_head(err), b_data(err));
7325 res_htx = htx_from_buf(&res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007326 channel_add_input(res, res_htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007327 }
7328 if (!(strm->flags & SF_ERR_MASK))
7329 strm->flags |= SF_ERR_RESOURCE;
7330 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7331 goto done;
7332}
7333
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007334static void hlua_applet_http_release(struct appctx *ctx)
7335{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007336 task_destroy(ctx->ctx.hlua_apphttp.task);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007337 ctx->ctx.hlua_apphttp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007338 hlua_ctx_destroy(ctx->ctx.hlua_apphttp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007339 ctx->ctx.hlua_apphttp.hlua = NULL;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007340}
7341
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007342/* global {tcp|http}-request parser. Return ACT_RET_PRS_OK in
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007343 * success case, else return ACT_RET_PRS_ERR.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007344 *
7345 * This function can fail with an abort() due to an Lua critical error.
7346 * We are in the configuration parsing process of HAProxy, this abort() is
7347 * tolerated.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007348 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007349static enum act_parse_ret action_register_lua(const char **args, int *cur_arg, struct proxy *px,
7350 struct act_rule *rule, char **err)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007351{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007352 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007353 int i;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007354
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007355 /* Memory for the rule. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007356 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007357 if (!rule->arg.hlua_rule) {
7358 memprintf(err, "out of memory error");
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007359 return ACT_RET_PRS_ERR;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007360 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007361
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007362 /* Memory for arguments. */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02007363 rule->arg.hlua_rule->args = calloc(fcn->nargs + 1,
7364 sizeof(*rule->arg.hlua_rule->args));
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007365 if (!rule->arg.hlua_rule->args) {
7366 memprintf(err, "out of memory error");
7367 return ACT_RET_PRS_ERR;
7368 }
7369
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007370 /* Reference the Lua function and store the reference. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007371 rule->arg.hlua_rule->fcn = *fcn;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007372
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007373 /* Expect some arguments */
7374 for (i = 0; i < fcn->nargs; i++) {
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007375 if (*args[*cur_arg] == '\0') {
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007376 memprintf(err, "expect %d arguments", fcn->nargs);
7377 return ACT_RET_PRS_ERR;
7378 }
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007379 rule->arg.hlua_rule->args[i] = strdup(args[*cur_arg]);
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007380 if (!rule->arg.hlua_rule->args[i]) {
7381 memprintf(err, "out of memory error");
7382 return ACT_RET_PRS_ERR;
7383 }
7384 (*cur_arg)++;
7385 }
7386 rule->arg.hlua_rule->args[i] = NULL;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007387
Thierry FOURNIER42148732015-09-02 17:17:33 +02007388 rule->action = ACT_CUSTOM;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007389 rule->action_ptr = hlua_action;
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007390 return ACT_RET_PRS_OK;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007391}
7392
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007393static enum act_parse_ret action_register_service_http(const char **args, int *cur_arg, struct proxy *px,
7394 struct act_rule *rule, char **err)
7395{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007396 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007397
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007398 /* HTTP applets are forbidden in tcp-request rules.
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007399 * HTTP applet request requires everything initialized by
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007400 * "http_process_request" (analyzer flag AN_REQ_HTTP_INNER).
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05007401 * The applet will be immediately initialized, but its before
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007402 * the call of this analyzer.
7403 */
7404 if (rule->from != ACT_F_HTTP_REQ) {
7405 memprintf(err, "HTTP applets are forbidden from 'tcp-request' rulesets");
7406 return ACT_RET_PRS_ERR;
7407 }
7408
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007409 /* Memory for the rule. */
7410 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7411 if (!rule->arg.hlua_rule) {
7412 memprintf(err, "out of memory error");
7413 return ACT_RET_PRS_ERR;
7414 }
7415
7416 /* Reference the Lua function and store the reference. */
7417 rule->arg.hlua_rule->fcn = *fcn;
7418
7419 /* TODO: later accept arguments. */
7420 rule->arg.hlua_rule->args = NULL;
7421
7422 /* Add applet pointer in the rule. */
7423 rule->applet.obj_type = OBJ_TYPE_APPLET;
7424 rule->applet.name = fcn->name;
7425 rule->applet.init = hlua_applet_http_init;
7426 rule->applet.fct = hlua_applet_http_fct;
7427 rule->applet.release = hlua_applet_http_release;
7428 rule->applet.timeout = hlua_timeout_applet;
7429
7430 return ACT_RET_PRS_OK;
7431}
7432
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007433/* This function is an LUA binding used for registering
7434 * "sample-conv" functions. It expects a converter name used
7435 * in the haproxy configuration file, and an LUA function.
7436 */
7437__LJMP static int hlua_register_action(lua_State *L)
7438{
7439 struct action_kw_list *akl;
7440 const char *name;
7441 int ref;
7442 int len;
7443 struct hlua_function *fcn;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007444 int nargs;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007445
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007446 /* Initialise the number of expected arguments at 0. */
7447 nargs = 0;
7448
7449 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
7450 WILL_LJMP(luaL_error(L, "'register_action' needs between 3 and 4 arguments"));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007451
7452 /* First argument : converter name. */
7453 name = MAY_LJMP(luaL_checkstring(L, 1));
7454
7455 /* Second argument : environment. */
7456 if (lua_type(L, 2) != LUA_TTABLE)
7457 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7458
7459 /* Third argument : lua function. */
7460 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7461
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007462 /* Fourth argument : number of mandatory arguments expected on the configuration line. */
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007463 if (lua_gettop(L) >= 4)
7464 nargs = MAY_LJMP(luaL_checkinteger(L, 4));
7465
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007466 /* browse the second argument as an array. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007467 lua_pushnil(L);
7468 while (lua_next(L, 2) != 0) {
7469 if (lua_type(L, -1) != LUA_TSTRING)
7470 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7471
7472 /* Check required environment. Only accepted "http" or "tcp". */
7473 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007474 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007475 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007476 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007477 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007478 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007479 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007480
7481 /* Fill fcn. */
7482 fcn->name = strdup(name);
7483 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007484 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007485 fcn->function_ref = ref;
7486
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007487 /* Set the expected number od arguments. */
7488 fcn->nargs = nargs;
7489
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007490 /* List head */
7491 akl->list.n = akl->list.p = NULL;
7492
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007493 /* action keyword. */
7494 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007495 akl->kw[0].kw = calloc(1, len);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007496 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007497 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007498
7499 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7500
7501 akl->kw[0].match_pfx = 0;
7502 akl->kw[0].private = fcn;
7503 akl->kw[0].parse = action_register_lua;
7504
7505 /* select the action registering point. */
7506 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0)
7507 tcp_req_cont_keywords_register(akl);
7508 else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0)
7509 tcp_res_cont_keywords_register(akl);
7510 else if (strcmp(lua_tostring(L, -1), "http-req") == 0)
7511 http_req_keywords_register(akl);
7512 else if (strcmp(lua_tostring(L, -1), "http-res") == 0)
7513 http_res_keywords_register(akl);
7514 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007515 WILL_LJMP(luaL_error(L, "Lua action environment '%s' is unknown. "
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007516 "'tcp-req', 'tcp-res', 'http-req' or 'http-res' "
7517 "are expected.", lua_tostring(L, -1)));
7518
7519 /* pop the environment string. */
7520 lua_pop(L, 1);
7521 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007522 return ACT_RET_PRS_OK;
7523}
7524
7525static enum act_parse_ret action_register_service_tcp(const char **args, int *cur_arg, struct proxy *px,
7526 struct act_rule *rule, char **err)
7527{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007528 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007529
Christopher Faulet280f85b2019-07-15 15:02:04 +02007530 if (px->mode == PR_MODE_HTTP) {
7531 memprintf(err, "Lua TCP services cannot be used on HTTP proxies");
Christopher Fauletafd8f102018-11-08 11:34:21 +01007532 return ACT_RET_PRS_ERR;
7533 }
7534
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007535 /* Memory for the rule. */
7536 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7537 if (!rule->arg.hlua_rule) {
7538 memprintf(err, "out of memory error");
7539 return ACT_RET_PRS_ERR;
7540 }
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007541
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007542 /* Reference the Lua function and store the reference. */
7543 rule->arg.hlua_rule->fcn = *fcn;
7544
7545 /* TODO: later accept arguments. */
7546 rule->arg.hlua_rule->args = NULL;
7547
7548 /* Add applet pointer in the rule. */
7549 rule->applet.obj_type = OBJ_TYPE_APPLET;
7550 rule->applet.name = fcn->name;
7551 rule->applet.init = hlua_applet_tcp_init;
7552 rule->applet.fct = hlua_applet_tcp_fct;
7553 rule->applet.release = hlua_applet_tcp_release;
7554 rule->applet.timeout = hlua_timeout_applet;
7555
7556 return 0;
7557}
7558
7559/* This function is an LUA binding used for registering
7560 * "sample-conv" functions. It expects a converter name used
7561 * in the haproxy configuration file, and an LUA function.
7562 */
7563__LJMP static int hlua_register_service(lua_State *L)
7564{
7565 struct action_kw_list *akl;
7566 const char *name;
7567 const char *env;
7568 int ref;
7569 int len;
7570 struct hlua_function *fcn;
7571
7572 MAY_LJMP(check_args(L, 3, "register_service"));
7573
7574 /* First argument : converter name. */
7575 name = MAY_LJMP(luaL_checkstring(L, 1));
7576
7577 /* Second argument : environment. */
7578 env = MAY_LJMP(luaL_checkstring(L, 2));
7579
7580 /* Third argument : lua function. */
7581 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7582
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007583 /* Allocate and fill the sample fetch keyword struct. */
7584 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
7585 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007586 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007587 fcn = calloc(1, sizeof(*fcn));
7588 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007589 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007590
7591 /* Fill fcn. */
7592 len = strlen("<lua.>") + strlen(name) + 1;
7593 fcn->name = calloc(1, len);
7594 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007595 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007596 snprintf((char *)fcn->name, len, "<lua.%s>", name);
7597 fcn->function_ref = ref;
7598
7599 /* List head */
7600 akl->list.n = akl->list.p = NULL;
7601
7602 /* converter keyword. */
7603 len = strlen("lua.") + strlen(name) + 1;
7604 akl->kw[0].kw = calloc(1, len);
7605 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007606 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007607
7608 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7609
Thierry FOURNIER / OZON.IO02564fd2016-11-12 11:07:05 +01007610 /* Check required environment. Only accepted "http" or "tcp". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007611 if (strcmp(env, "tcp") == 0)
7612 akl->kw[0].parse = action_register_service_tcp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007613 else if (strcmp(env, "http") == 0)
7614 akl->kw[0].parse = action_register_service_http;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007615 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007616 WILL_LJMP(luaL_error(L, "Lua service environment '%s' is unknown. "
Eric Salamafe7456f2017-12-21 14:30:07 +01007617 "'tcp' or 'http' are expected.", env));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007618
7619 akl->kw[0].match_pfx = 0;
7620 akl->kw[0].private = fcn;
7621
7622 /* End of array. */
7623 memset(&akl->kw[1], 0, sizeof(*akl->kw));
7624
7625 /* Register this new converter */
7626 service_keywords_register(akl);
7627
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007628 return 0;
7629}
7630
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007631/* This function initialises Lua cli handler. It copies the
7632 * arguments in the Lua stack and create channel IO objects.
7633 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02007634static int hlua_cli_parse_fct(char **args, char *payload, struct appctx *appctx, void *private)
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007635{
7636 struct hlua *hlua;
7637 struct hlua_function *fcn;
7638 int i;
7639 const char *error;
7640
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007641 fcn = private;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007642 appctx->ctx.hlua_cli.fcn = private;
7643
Willy Tarreaubafbe012017-11-24 17:34:44 +01007644 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007645 if (!hlua) {
7646 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007647 return 1;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007648 }
7649 HLUA_INIT(hlua);
7650 appctx->ctx.hlua_cli.hlua = hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007651
7652 /* Create task used by signal to wakeup applets.
Ilya Shipitsind4259502020-04-08 01:07:56 +05007653 * We use the same wakeup function than the Lua applet_tcp and
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007654 * applet_http. It is absolutely compatible.
7655 */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007656 appctx->ctx.hlua_cli.task = task_new(tid_bit);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007657 if (!appctx->ctx.hlua_cli.task) {
Thierry FOURNIERffbf5692016-12-16 11:14:06 +01007658 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007659 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007660 }
7661 appctx->ctx.hlua_cli.task->nice = 0;
7662 appctx->ctx.hlua_cli.task->context = appctx;
7663 appctx->ctx.hlua_cli.task->process = hlua_applet_wakeup;
7664
7665 /* Initialises the Lua context */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01007666 if (!hlua_ctx_init(hlua, appctx->ctx.hlua_cli.task, 0)) {
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007667 SEND_ERR(NULL, "Lua cli '%s': can't initialize Lua context.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007668 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007669 }
7670
7671 /* The following Lua calls can fail. */
7672 if (!SET_SAFE_LJMP(hlua->T)) {
7673 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7674 error = lua_tostring(hlua->T, -1);
7675 else
7676 error = "critical error";
7677 SEND_ERR(NULL, "Lua cli '%s': %s.\n", fcn->name, error);
7678 goto error;
7679 }
7680
7681 /* Check stack available size. */
7682 if (!lua_checkstack(hlua->T, 2)) {
7683 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7684 goto error;
7685 }
7686
7687 /* Restore the function in the stack. */
7688 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
7689
7690 /* Once the arguments parsed, the CLI is like an AppletTCP,
7691 * so push AppletTCP in the stack.
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007692 */
7693 if (!hlua_applet_tcp_new(hlua->T, appctx)) {
7694 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7695 goto error;
7696 }
7697 hlua->nargs = 1;
7698
7699 /* push keywords in the stack. */
7700 for (i = 0; *args[i]; i++) {
7701 /* Check stack available size. */
7702 if (!lua_checkstack(hlua->T, 1)) {
7703 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7704 goto error;
7705 }
7706 lua_pushstring(hlua->T, args[i]);
7707 hlua->nargs++;
7708 }
7709
7710 /* We must initialize the execution timeouts. */
7711 hlua->max_time = hlua_timeout_session;
7712
7713 /* At this point the execution is safe. */
7714 RESET_SAFE_LJMP(hlua->T);
7715
7716 /* It's ok */
7717 return 0;
7718
7719 /* It's not ok. */
7720error:
7721 RESET_SAFE_LJMP(hlua->T);
7722 hlua_ctx_destroy(hlua);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007723 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007724 return 1;
7725}
7726
7727static int hlua_cli_io_handler_fct(struct appctx *appctx)
7728{
7729 struct hlua *hlua;
7730 struct stream_interface *si;
7731 struct hlua_function *fcn;
7732
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007733 hlua = appctx->ctx.hlua_cli.hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007734 si = appctx->owner;
Willy Tarreau8ae4f752016-12-14 15:41:45 +01007735 fcn = appctx->ctx.hlua_cli.fcn;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007736
7737 /* If the stream is disconnect or closed, ldo nothing. */
7738 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7739 return 1;
7740
7741 /* Execute the function. */
7742 switch (hlua_ctx_resume(hlua, 1)) {
7743
7744 /* finished. */
7745 case HLUA_E_OK:
7746 return 1;
7747
7748 /* yield. */
7749 case HLUA_E_AGAIN:
7750 /* We want write. */
7751 if (HLUA_IS_WAKERESWR(hlua))
Willy Tarreaudb398432018-11-15 11:08:52 +01007752 si_rx_room_blk(si);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007753 /* Set the timeout. */
7754 if (hlua->wake_time != TICK_ETERNITY)
7755 task_schedule(hlua->task, hlua->wake_time);
7756 return 0;
7757
7758 /* finished with error. */
7759 case HLUA_E_ERRMSG:
7760 /* Display log. */
7761 SEND_ERR(NULL, "Lua cli '%s': %s.\n",
7762 fcn->name, lua_tostring(hlua->T, -1));
7763 lua_pop(hlua->T, 1);
7764 return 1;
7765
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007766 case HLUA_E_ETMOUT:
7767 SEND_ERR(NULL, "Lua converter '%s': execution timeout.\n",
7768 fcn->name);
7769 return 1;
7770
7771 case HLUA_E_NOMEM:
7772 SEND_ERR(NULL, "Lua converter '%s': out of memory error.\n",
7773 fcn->name);
7774 return 1;
7775
7776 case HLUA_E_YIELD: /* unexpected */
7777 SEND_ERR(NULL, "Lua converter '%s': yield not allowed.\n",
7778 fcn->name);
7779 return 1;
7780
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007781 case HLUA_E_ERR:
7782 /* Display log. */
7783 SEND_ERR(NULL, "Lua cli '%s' return an unknown error.\n",
7784 fcn->name);
7785 return 1;
7786
7787 default:
7788 return 1;
7789 }
7790
7791 return 1;
7792}
7793
7794static void hlua_cli_io_release_fct(struct appctx *appctx)
7795{
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007796 hlua_ctx_destroy(appctx->ctx.hlua_cli.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007797 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007798}
7799
7800/* This function is an LUA binding used for registering
7801 * new keywords in the cli. It expects a list of keywords
7802 * which are the "path". It is limited to 5 keywords. A
7803 * description of the command, a function to be executed
7804 * for the parsing and a function for io handlers.
7805 */
7806__LJMP static int hlua_register_cli(lua_State *L)
7807{
7808 struct cli_kw_list *cli_kws;
7809 const char *message;
7810 int ref_io;
7811 int len;
7812 struct hlua_function *fcn;
7813 int index;
7814 int i;
7815
7816 MAY_LJMP(check_args(L, 3, "register_cli"));
7817
7818 /* First argument : an array of maximum 5 keywords. */
7819 if (!lua_istable(L, 1))
7820 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table"));
7821
7822 /* Second argument : string with contextual message. */
7823 message = MAY_LJMP(luaL_checkstring(L, 2));
7824
7825 /* Third and fourth argument : lua function. */
7826 ref_io = MAY_LJMP(hlua_checkfunction(L, 3));
7827
7828 /* Allocate and fill the sample fetch keyword struct. */
7829 cli_kws = calloc(1, sizeof(*cli_kws) + sizeof(struct cli_kw) * 2);
7830 if (!cli_kws)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007831 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007832 fcn = calloc(1, sizeof(*fcn));
7833 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007834 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007835
7836 /* Fill path. */
7837 index = 0;
7838 lua_pushnil(L);
7839 while(lua_next(L, 1) != 0) {
7840 if (index >= 5)
7841 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
7842 if (lua_type(L, -1) != LUA_TSTRING)
7843 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
7844 cli_kws->kw[0].str_kw[index] = strdup(lua_tostring(L, -1));
7845 if (!cli_kws->kw[0].str_kw[index])
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007846 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007847 index++;
7848 lua_pop(L, 1);
7849 }
7850
7851 /* Copy help message. */
7852 cli_kws->kw[0].usage = strdup(message);
7853 if (!cli_kws->kw[0].usage)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007854 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007855
7856 /* Fill fcn io handler. */
7857 len = strlen("<lua.cli>") + 1;
7858 for (i = 0; i < index; i++)
7859 len += strlen(cli_kws->kw[0].str_kw[i]) + 1;
7860 fcn->name = calloc(1, len);
7861 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007862 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007863 strncat((char *)fcn->name, "<lua.cli", len);
7864 for (i = 0; i < index; i++) {
7865 strncat((char *)fcn->name, ".", len);
7866 strncat((char *)fcn->name, cli_kws->kw[0].str_kw[i], len);
7867 }
7868 strncat((char *)fcn->name, ">", len);
7869 fcn->function_ref = ref_io;
7870
7871 /* Fill last entries. */
7872 cli_kws->kw[0].private = fcn;
7873 cli_kws->kw[0].parse = hlua_cli_parse_fct;
7874 cli_kws->kw[0].io_handler = hlua_cli_io_handler_fct;
7875 cli_kws->kw[0].io_release = hlua_cli_io_release_fct;
7876
7877 /* Register this new converter */
7878 cli_register_kw(cli_kws);
7879
7880 return 0;
7881}
7882
Thierry FOURNIERbd413492015-03-03 16:52:26 +01007883static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx,
7884 struct proxy *defpx, const char *file, int line,
7885 char **err, unsigned int *timeout)
7886{
7887 const char *error;
7888
7889 error = parse_time_err(args[1], timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02007890 if (error == PARSE_TIME_OVER) {
7891 memprintf(err, "timer overflow in argument <%s> to <%s> (maximum value is 2147483647 ms or ~24.8 days)",
7892 args[1], args[0]);
7893 return -1;
7894 }
7895 else if (error == PARSE_TIME_UNDER) {
7896 memprintf(err, "timer underflow in argument <%s> to <%s> (minimum non-null value is 1 ms)",
7897 args[1], args[0]);
7898 return -1;
7899 }
7900 else if (error) {
Thierry FOURNIERbd413492015-03-03 16:52:26 +01007901 memprintf(err, "%s: invalid timeout", args[0]);
7902 return -1;
7903 }
7904 return 0;
7905}
7906
7907static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx,
7908 struct proxy *defpx, const char *file, int line,
7909 char **err)
7910{
7911 return hlua_read_timeout(args, section_type, curpx, defpx,
7912 file, line, err, &hlua_timeout_session);
7913}
7914
7915static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx,
7916 struct proxy *defpx, const char *file, int line,
7917 char **err)
7918{
7919 return hlua_read_timeout(args, section_type, curpx, defpx,
7920 file, line, err, &hlua_timeout_task);
7921}
7922
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007923static int hlua_applet_timeout(char **args, int section_type, struct proxy *curpx,
7924 struct proxy *defpx, const char *file, int line,
7925 char **err)
7926{
7927 return hlua_read_timeout(args, section_type, curpx, defpx,
7928 file, line, err, &hlua_timeout_applet);
7929}
7930
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01007931static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx,
7932 struct proxy *defpx, const char *file, int line,
7933 char **err)
7934{
7935 char *error;
7936
7937 hlua_nb_instruction = strtoll(args[1], &error, 10);
7938 if (*error != '\0') {
7939 memprintf(err, "%s: invalid number", args[0]);
7940 return -1;
7941 }
7942 return 0;
7943}
7944
Willy Tarreau32f61e22015-03-18 17:54:59 +01007945static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx,
7946 struct proxy *defpx, const char *file, int line,
7947 char **err)
7948{
7949 char *error;
7950
7951 if (*(args[1]) == 0) {
7952 memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]);
7953 return -1;
7954 }
7955 hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L;
7956 if (*error != '\0') {
7957 memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error);
7958 return -1;
7959 }
7960 return 0;
7961}
7962
7963
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007964/* This function is called by the main configuration key "lua-load". It loads and
7965 * execute an lua file during the parsing of the HAProxy configuration file. It is
7966 * the main lua entry point.
7967 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007968 * This function runs with the HAProxy keywords API. It returns -1 if an error
7969 * occurs, otherwise it returns 0.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007970 *
7971 * In some error case, LUA set an error message in top of the stack. This function
7972 * returns this error message in the HAProxy logs and pop it from the stack.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007973 *
7974 * This function can fail with an abort() due to an Lua critical error.
7975 * We are in the configuration parsing process of HAProxy, this abort() is
7976 * tolerated.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007977 */
7978static int hlua_load(char **args, int section_type, struct proxy *curpx,
7979 struct proxy *defpx, const char *file, int line,
7980 char **err)
7981{
7982 int error;
7983
7984 /* Just load and compile the file. */
7985 error = luaL_loadfile(gL.T, args[1]);
7986 if (error) {
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007987 memprintf(err, "error in Lua file '%s': %s", args[1], lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007988 lua_pop(gL.T, 1);
7989 return -1;
7990 }
7991
7992 /* If no syntax error where detected, execute the code. */
7993 error = lua_pcall(gL.T, 0, LUA_MULTRET, 0);
7994 switch (error) {
7995 case LUA_OK:
7996 break;
7997 case LUA_ERRRUN:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007998 memprintf(err, "Lua runtime error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007999 lua_pop(gL.T, 1);
8000 return -1;
8001 case LUA_ERRMEM:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008002 memprintf(err, "Lua out of memory error.n");
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008003 return -1;
8004 case LUA_ERRERR:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008005 memprintf(err, "Lua message handler error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008006 lua_pop(gL.T, 1);
8007 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008008#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM <= 503
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008009 case LUA_ERRGCMM:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008010 memprintf(err, "Lua garbage collector error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008011 lua_pop(gL.T, 1);
8012 return -1;
Christopher Faulet08ed98f2020-07-28 10:33:25 +02008013#endif
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008014 default:
Ilya Shipitsind4259502020-04-08 01:07:56 +05008015 memprintf(err, "Lua unknown error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008016 lua_pop(gL.T, 1);
8017 return -1;
8018 }
8019
8020 return 0;
8021}
8022
Tim Duesterhusc9fc9f22020-01-12 13:55:39 +01008023/* Prepend the given <path> followed by a semicolon to the `package.<type>` variable
8024 * in the given <ctx>.
8025 */
8026static int hlua_prepend_path(struct hlua ctx, char *type, char *path)
8027{
8028 lua_getglobal(ctx.T, "package"); /* push package variable */
8029 lua_pushstring(ctx.T, path); /* push given path */
8030 lua_pushstring(ctx.T, ";"); /* push semicolon */
8031 lua_getfield(ctx.T, -3, type); /* push old path */
8032 lua_concat(ctx.T, 3); /* concatenate to new path */
8033 lua_setfield(ctx.T, -2, type); /* store new path */
8034 lua_pop(ctx.T, 1); /* pop package variable */
8035
8036 return 0;
8037}
8038
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008039static int hlua_config_prepend_path(char **args, int section_type, struct proxy *curpx,
8040 struct proxy *defpx, const char *file, int line,
8041 char **err)
8042{
8043 char *path;
8044 char *type = "path";
8045 if (too_many_args(2, args, err, NULL)) {
8046 return -1;
8047 }
8048
8049 if (!(*args[1])) {
8050 memprintf(err, "'%s' expects to receive a <path> as argument", args[0]);
8051 return -1;
8052 }
8053 path = args[1];
8054
8055 if (*args[2]) {
8056 if (strcmp(args[2], "path") != 0 && strcmp(args[2], "cpath") != 0) {
8057 memprintf(err, "'%s' expects <type> to either be 'path' or 'cpath'", args[0]);
8058 return -1;
8059 }
8060 type = args[2];
8061 }
8062
8063 return hlua_prepend_path(gL, type, path);
8064}
8065
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008066/* configuration keywords declaration */
8067static struct cfg_kw_list cfg_kws = {{ },{
Tim Duesterhusdd74b5f2020-01-12 13:55:40 +01008068 { CFG_GLOBAL, "lua-prepend-path", hlua_config_prepend_path },
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008069 { CFG_GLOBAL, "lua-load", hlua_load },
8070 { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout },
8071 { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout },
Thierry FOURNIER56da1012015-10-01 08:42:31 +02008072 { CFG_GLOBAL, "tune.lua.service-timeout", hlua_applet_timeout },
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008073 { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield },
Willy Tarreau32f61e22015-03-18 17:54:59 +01008074 { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem },
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008075 { 0, NULL, NULL },
8076}};
8077
Willy Tarreau0108d902018-11-25 19:14:37 +01008078INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
8079
Christopher Fauletafd8f102018-11-08 11:34:21 +01008080
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008081/* This function can fail with an abort() due to an Lua critical error.
8082 * We are in the initialisation process of HAProxy, this abort() is
8083 * tolerated.
8084 */
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008085int hlua_post_init()
8086{
8087 struct hlua_init_function *init;
8088 const char *msg;
8089 enum hlua_exec ret;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008090 const char *error;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008091
Ilya Shipitsin856aabc2020-04-16 23:51:34 +05008092 /* Call post initialisation function in safe environment. */
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008093 if (!SET_SAFE_LJMP(gL.T)) {
8094 if (lua_type(gL.T, -1) == LUA_TSTRING)
8095 error = lua_tostring(gL.T, -1);
8096 else
8097 error = "critical error";
8098 fprintf(stderr, "Lua post-init: %s.\n", error);
8099 exit(1);
8100 }
Frédéric Lécaille54f2bcf2018-08-29 13:46:24 +02008101
8102#if USE_OPENSSL
8103 /* Initialize SSL server. */
8104 if (socket_ssl.xprt->prepare_srv) {
8105 int saved_used_backed = global.ssl_used_backend;
8106 // don't affect maxconn automatic computation
8107 socket_ssl.xprt->prepare_srv(&socket_ssl);
8108 global.ssl_used_backend = saved_used_backed;
8109 }
8110#endif
8111
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008112 hlua_fcn_post_init(gL.T);
8113 RESET_SAFE_LJMP(gL.T);
8114
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008115 list_for_each_entry(init, &hlua_init_functions, l) {
8116 lua_rawgeti(gL.T, LUA_REGISTRYINDEX, init->function_ref);
8117 ret = hlua_ctx_resume(&gL, 0);
8118 switch (ret) {
8119 case HLUA_E_OK:
8120 lua_pop(gL.T, -1);
8121 return 1;
8122 case HLUA_E_AGAIN:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008123 ha_alert("Lua init: yield not allowed.\n");
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008124 return 0;
8125 case HLUA_E_ERRMSG:
8126 msg = lua_tostring(gL.T, -1);
Christopher Faulet767a84b2017-11-24 16:50:31 +01008127 ha_alert("lua init: %s.\n", msg);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008128 return 0;
8129 case HLUA_E_ERR:
8130 default:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008131 ha_alert("Lua init: unknown runtime error.\n");
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008132 return 0;
8133 }
8134 }
8135 return 1;
8136}
8137
Willy Tarreau32f61e22015-03-18 17:54:59 +01008138/* The memory allocator used by the Lua stack. <ud> is a pointer to the
8139 * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize>
8140 * is the previously allocated size or the kind of object in case of a new
8141 * allocation. <nsize> is the requested new size.
8142 */
8143static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
8144{
8145 struct hlua_mem_allocator *zone = ud;
8146
8147 if (nsize == 0) {
8148 /* it's a free */
8149 if (ptr)
8150 zone->allocated -= osize;
8151 free(ptr);
8152 return NULL;
8153 }
8154
8155 if (!ptr) {
8156 /* it's a new allocation */
8157 if (zone->limit && zone->allocated + nsize > zone->limit)
8158 return NULL;
8159
8160 ptr = malloc(nsize);
8161 if (ptr)
8162 zone->allocated += nsize;
8163 return ptr;
8164 }
8165
8166 /* it's a realloc */
8167 if (zone->limit && zone->allocated + nsize - osize > zone->limit)
8168 return NULL;
8169
8170 ptr = realloc(ptr, nsize);
8171 if (ptr)
8172 zone->allocated += nsize - osize;
8173 return ptr;
8174}
8175
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008176/* Ithis function can fail with an abort() due to an Lua critical error.
8177 * We are in the initialisation process of HAProxy, this abort() is
8178 * tolerated.
8179 */
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008180void hlua_init(void)
8181{
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008182 int i;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008183 int idx;
8184 struct sample_fetch *sf;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008185 struct sample_conv *sc;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008186 char *p;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008187 const char *error_msg;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008188#ifdef USE_OPENSSL
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008189 struct srv_kw *kw;
8190 int tmp_error;
8191 char *error;
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008192 char *args[] = { /* SSL client configuration. */
8193 "ssl",
8194 "verify",
8195 "none",
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008196 NULL
8197 };
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008198#endif
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008199
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008200 /* Init main lua stack. */
8201 gL.Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01008202 gL.flags = 0;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01008203 LIST_INIT(&gL.com);
Willy Tarreau42ef75f2017-04-12 21:40:29 +02008204 gL.T = lua_newstate(hlua_alloc, &hlua_global_allocator);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008205 hlua_sethlua(&gL);
8206 gL.Tref = LUA_REFNIL;
8207 gL.task = NULL;
8208
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008209 /* From this point, until the end of the initialisation function,
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008210 * the Lua function can fail with an abort. We are in the initialisation
8211 * process of HAProxy, this abort() is tolerated.
8212 */
8213
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008214 /* Initialise lua. */
8215 luaL_openlibs(gL.T);
Tim Duesterhus541fe1e2020-01-12 13:55:41 +01008216#define HLUA_PREPEND_PATH_TOSTRING1(x) #x
8217#define HLUA_PREPEND_PATH_TOSTRING(x) HLUA_PREPEND_PATH_TOSTRING1(x)
8218#ifdef HLUA_PREPEND_PATH
8219 hlua_prepend_path(gL, "path", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_PATH));
8220#endif
8221#ifdef HLUA_PREPEND_CPATH
8222 hlua_prepend_path(gL, "cpath", HLUA_PREPEND_PATH_TOSTRING(HLUA_PREPEND_CPATH));
8223#endif
8224#undef HLUA_PREPEND_PATH_TOSTRING
8225#undef HLUA_PREPEND_PATH_TOSTRING1
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008226
Thierry Fournier75933d42016-01-21 09:30:18 +01008227 /* Set safe environment for the initialisation. */
8228 if (!SET_SAFE_LJMP(gL.T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01008229 if (lua_type(gL.T, -1) == LUA_TSTRING)
8230 error_msg = lua_tostring(gL.T, -1);
8231 else
8232 error_msg = "critical error";
8233 fprintf(stderr, "Lua init: %s.\n", error_msg);
Thierry Fournier75933d42016-01-21 09:30:18 +01008234 exit(1);
8235 }
8236
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008237 /*
8238 *
8239 * Create "core" object.
8240 *
8241 */
8242
Thierry FOURNIERa2d8c652015-03-11 17:29:39 +01008243 /* This table entry is the object "core" base. */
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008244 lua_newtable(gL.T);
8245
8246 /* Push the loglevel constants. */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008247 for (i = 0; i < NB_LOG_LEVELS; i++)
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008248 hlua_class_const_int(gL.T, log_levels[i], i);
8249
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008250 /* Register special functions. */
8251 hlua_class_function(gL.T, "register_init", hlua_register_init);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01008252 hlua_class_function(gL.T, "register_task", hlua_register_task);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01008253 hlua_class_function(gL.T, "register_fetches", hlua_register_fetches);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01008254 hlua_class_function(gL.T, "register_converters", hlua_register_converters);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02008255 hlua_class_function(gL.T, "register_action", hlua_register_action);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008256 hlua_class_function(gL.T, "register_service", hlua_register_service);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008257 hlua_class_function(gL.T, "register_cli", hlua_register_cli);
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01008258 hlua_class_function(gL.T, "yield", hlua_yield);
Willy Tarreau59551662015-03-10 14:23:13 +01008259 hlua_class_function(gL.T, "set_nice", hlua_set_nice);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01008260 hlua_class_function(gL.T, "sleep", hlua_sleep);
8261 hlua_class_function(gL.T, "msleep", hlua_msleep);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01008262 hlua_class_function(gL.T, "add_acl", hlua_add_acl);
8263 hlua_class_function(gL.T, "del_acl", hlua_del_acl);
8264 hlua_class_function(gL.T, "set_map", hlua_set_map);
8265 hlua_class_function(gL.T, "del_map", hlua_del_map);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008266 hlua_class_function(gL.T, "tcp", hlua_socket_new);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01008267 hlua_class_function(gL.T, "log", hlua_log);
8268 hlua_class_function(gL.T, "Debug", hlua_log_debug);
8269 hlua_class_function(gL.T, "Info", hlua_log_info);
8270 hlua_class_function(gL.T, "Warning", hlua_log_warning);
8271 hlua_class_function(gL.T, "Alert", hlua_log_alert);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02008272 hlua_class_function(gL.T, "done", hlua_done);
Thierry Fournierfb0b5462016-01-21 09:28:58 +01008273 hlua_fcn_reg_core_fcn(gL.T);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008274
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008275 lua_setglobal(gL.T, "core");
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008276
8277 /*
8278 *
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008279 * Create "act" object.
8280 *
8281 */
8282
8283 /* This table entry is the object "act" base. */
8284 lua_newtable(gL.T);
8285
8286 /* push action return constants */
8287 hlua_class_const_int(gL.T, "CONTINUE", ACT_RET_CONT);
8288 hlua_class_const_int(gL.T, "STOP", ACT_RET_STOP);
8289 hlua_class_const_int(gL.T, "YIELD", ACT_RET_YIELD);
8290 hlua_class_const_int(gL.T, "ERROR", ACT_RET_ERR);
8291 hlua_class_const_int(gL.T, "DONE", ACT_RET_DONE);
8292 hlua_class_const_int(gL.T, "DENY", ACT_RET_DENY);
8293 hlua_class_const_int(gL.T, "ABORT", ACT_RET_ABRT);
8294 hlua_class_const_int(gL.T, "INVALID", ACT_RET_INV);
8295
Christopher Faulet501465d2020-02-26 14:54:16 +01008296 hlua_class_function(gL.T, "wake_time", hlua_set_wake_time);
Christopher Faulet2c2c2e32020-01-31 19:07:52 +01008297
Christopher Faulet0f3c8902020-01-31 18:57:12 +01008298 lua_setglobal(gL.T, "act");
8299
8300 /*
8301 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008302 * Register class Map
8303 *
8304 */
8305
8306 /* This table entry is the object "Map" base. */
8307 lua_newtable(gL.T);
8308
8309 /* register pattern types. */
8310 for (i=0; i<PAT_MATCH_NUM; i++)
8311 hlua_class_const_int(gL.T, pat_match_names[i], i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008312 for (i=0; i<PAT_MATCH_NUM; i++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008313 snprintf(trash.area, trash.size, "_%s", pat_match_names[i]);
8314 hlua_class_const_int(gL.T, trash.area, i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008315 }
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008316
8317 /* register constructor. */
8318 hlua_class_function(gL.T, "new", hlua_map_new);
8319
8320 /* Create and fill the metatable. */
8321 lua_newtable(gL.T);
8322
Ilya Shipitsind4259502020-04-08 01:07:56 +05008323 /* Create and fill the __index entry. */
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008324 lua_pushstring(gL.T, "__index");
8325 lua_newtable(gL.T);
8326
8327 /* Register . */
8328 hlua_class_function(gL.T, "lookup", hlua_map_lookup);
8329 hlua_class_function(gL.T, "slookup", hlua_map_slookup);
8330
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008331 lua_rawset(gL.T, -3);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008332
Thierry Fournier45e78d72016-02-19 18:34:46 +01008333 /* Register previous table in the registry with reference and named entry.
8334 * The function hlua_register_metatable() pops the stack, so we
8335 * previously create a copy of the table.
8336 */
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008337 lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008338 class_map_ref = hlua_register_metatable(gL.T, CLASS_MAP);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008339
8340 /* Assign the metatable to the mai Map object. */
8341 lua_setmetatable(gL.T, -2);
8342
8343 /* Set a name to the table. */
8344 lua_setglobal(gL.T, "Map");
8345
8346 /*
8347 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008348 * Register class Channel
8349 *
8350 */
8351
8352 /* Create and fill the metatable. */
8353 lua_newtable(gL.T);
8354
Ilya Shipitsind4259502020-04-08 01:07:56 +05008355 /* Create and fill the __index entry. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008356 lua_pushstring(gL.T, "__index");
8357 lua_newtable(gL.T);
8358
8359 /* Register . */
8360 hlua_class_function(gL.T, "get", hlua_channel_get);
8361 hlua_class_function(gL.T, "dup", hlua_channel_dup);
8362 hlua_class_function(gL.T, "getline", hlua_channel_getline);
8363 hlua_class_function(gL.T, "set", hlua_channel_set);
8364 hlua_class_function(gL.T, "append", hlua_channel_append);
8365 hlua_class_function(gL.T, "send", hlua_channel_send);
8366 hlua_class_function(gL.T, "forward", hlua_channel_forward);
8367 hlua_class_function(gL.T, "get_in_len", hlua_channel_get_in_len);
8368 hlua_class_function(gL.T, "get_out_len", hlua_channel_get_out_len);
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01008369 hlua_class_function(gL.T, "is_full", hlua_channel_is_full);
Christopher Faulet2ac9ba22020-02-25 10:15:50 +01008370 hlua_class_function(gL.T, "is_resp", hlua_channel_is_resp);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008371
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008372 lua_rawset(gL.T, -3);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008373
8374 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008375 class_channel_ref = hlua_register_metatable(gL.T, CLASS_CHANNEL);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008376
8377 /*
8378 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008379 * Register class Fetches
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008380 *
8381 */
8382
8383 /* Create and fill the metatable. */
8384 lua_newtable(gL.T);
8385
Ilya Shipitsind4259502020-04-08 01:07:56 +05008386 /* Create and fill the __index entry. */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008387 lua_pushstring(gL.T, "__index");
8388 lua_newtable(gL.T);
8389
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008390 /* Browse existing fetches and create the associated
8391 * object method.
8392 */
8393 sf = NULL;
8394 while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) {
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008395 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8396 * by an underscore.
8397 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008398 strncpy(trash.area, sf->kw, trash.size);
8399 trash.area[trash.size - 1] = '\0';
8400 for (p = trash.area; *p; p++)
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008401 if (*p == '.' || *p == '-' || *p == '+')
8402 *p = '_';
8403
8404 /* Register the function. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008405 lua_pushstring(gL.T, trash.area);
Willy Tarreau2ec22742015-03-10 14:27:20 +01008406 lua_pushlightuserdata(gL.T, sf);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008407 lua_pushcclosure(gL.T, hlua_run_sample_fetch, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008408 lua_rawset(gL.T, -3);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008409 }
8410
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008411 lua_rawset(gL.T, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008412
8413 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008414 class_fetches_ref = hlua_register_metatable(gL.T, CLASS_FETCHES);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008415
8416 /*
8417 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008418 * Register class Converters
8419 *
8420 */
8421
8422 /* Create and fill the metatable. */
8423 lua_newtable(gL.T);
8424
8425 /* Create and fill the __index entry. */
8426 lua_pushstring(gL.T, "__index");
8427 lua_newtable(gL.T);
8428
8429 /* Browse existing converters and create the associated
8430 * object method.
8431 */
8432 sc = NULL;
8433 while ((sc = sample_conv_getnext(sc, &idx)) != NULL) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008434 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8435 * by an underscore.
8436 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008437 strncpy(trash.area, sc->kw, trash.size);
8438 trash.area[trash.size - 1] = '\0';
8439 for (p = trash.area; *p; p++)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008440 if (*p == '.' || *p == '-' || *p == '+')
8441 *p = '_';
8442
8443 /* Register the function. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008444 lua_pushstring(gL.T, trash.area);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008445 lua_pushlightuserdata(gL.T, sc);
8446 lua_pushcclosure(gL.T, hlua_run_sample_conv, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008447 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008448 }
8449
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008450 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008451
8452 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008453 class_converters_ref = hlua_register_metatable(gL.T, CLASS_CONVERTERS);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008454
8455 /*
8456 *
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008457 * Register class HTTP
8458 *
8459 */
8460
8461 /* Create and fill the metatable. */
8462 lua_newtable(gL.T);
8463
Ilya Shipitsind4259502020-04-08 01:07:56 +05008464 /* Create and fill the __index entry. */
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008465 lua_pushstring(gL.T, "__index");
8466 lua_newtable(gL.T);
8467
8468 /* Register Lua functions. */
8469 hlua_class_function(gL.T, "req_get_headers",hlua_http_req_get_headers);
8470 hlua_class_function(gL.T, "req_del_header", hlua_http_req_del_hdr);
8471 hlua_class_function(gL.T, "req_rep_header", hlua_http_req_rep_hdr);
8472 hlua_class_function(gL.T, "req_rep_value", hlua_http_req_rep_val);
8473 hlua_class_function(gL.T, "req_add_header", hlua_http_req_add_hdr);
8474 hlua_class_function(gL.T, "req_set_header", hlua_http_req_set_hdr);
8475 hlua_class_function(gL.T, "req_set_method", hlua_http_req_set_meth);
8476 hlua_class_function(gL.T, "req_set_path", hlua_http_req_set_path);
8477 hlua_class_function(gL.T, "req_set_query", hlua_http_req_set_query);
8478 hlua_class_function(gL.T, "req_set_uri", hlua_http_req_set_uri);
8479
8480 hlua_class_function(gL.T, "res_get_headers",hlua_http_res_get_headers);
8481 hlua_class_function(gL.T, "res_del_header", hlua_http_res_del_hdr);
8482 hlua_class_function(gL.T, "res_rep_header", hlua_http_res_rep_hdr);
8483 hlua_class_function(gL.T, "res_rep_value", hlua_http_res_rep_val);
8484 hlua_class_function(gL.T, "res_add_header", hlua_http_res_add_hdr);
8485 hlua_class_function(gL.T, "res_set_header", hlua_http_res_set_hdr);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02008486 hlua_class_function(gL.T, "res_set_status", hlua_http_res_set_status);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008487
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008488 lua_rawset(gL.T, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008489
8490 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008491 class_http_ref = hlua_register_metatable(gL.T, CLASS_HTTP);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008492
8493 /*
8494 *
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008495 * Register class AppletTCP
8496 *
8497 */
8498
8499 /* Create and fill the metatable. */
8500 lua_newtable(gL.T);
8501
Ilya Shipitsind4259502020-04-08 01:07:56 +05008502 /* Create and fill the __index entry. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008503 lua_pushstring(gL.T, "__index");
8504 lua_newtable(gL.T);
8505
8506 /* Register Lua functions. */
Thierry FOURNIER / OZON.IO3e1d7912016-12-12 12:29:34 +01008507 hlua_class_function(gL.T, "getline", hlua_applet_tcp_getline);
8508 hlua_class_function(gL.T, "receive", hlua_applet_tcp_recv);
8509 hlua_class_function(gL.T, "send", hlua_applet_tcp_send);
8510 hlua_class_function(gL.T, "set_priv", hlua_applet_tcp_set_priv);
8511 hlua_class_function(gL.T, "get_priv", hlua_applet_tcp_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01008512 hlua_class_function(gL.T, "set_var", hlua_applet_tcp_set_var);
8513 hlua_class_function(gL.T, "unset_var", hlua_applet_tcp_unset_var);
8514 hlua_class_function(gL.T, "get_var", hlua_applet_tcp_get_var);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008515
8516 lua_settable(gL.T, -3);
8517
8518 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008519 class_applet_tcp_ref = hlua_register_metatable(gL.T, CLASS_APPLET_TCP);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008520
8521 /*
8522 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008523 * Register class AppletHTTP
8524 *
8525 */
8526
8527 /* Create and fill the metatable. */
8528 lua_newtable(gL.T);
8529
Ilya Shipitsind4259502020-04-08 01:07:56 +05008530 /* Create and fill the __index entry. */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008531 lua_pushstring(gL.T, "__index");
8532 lua_newtable(gL.T);
8533
8534 /* Register Lua functions. */
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01008535 hlua_class_function(gL.T, "set_priv", hlua_applet_http_set_priv);
8536 hlua_class_function(gL.T, "get_priv", hlua_applet_http_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01008537 hlua_class_function(gL.T, "set_var", hlua_applet_http_set_var);
8538 hlua_class_function(gL.T, "unset_var", hlua_applet_http_unset_var);
8539 hlua_class_function(gL.T, "get_var", hlua_applet_http_get_var);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008540 hlua_class_function(gL.T, "getline", hlua_applet_http_getline);
8541 hlua_class_function(gL.T, "receive", hlua_applet_http_recv);
8542 hlua_class_function(gL.T, "send", hlua_applet_http_send);
8543 hlua_class_function(gL.T, "add_header", hlua_applet_http_addheader);
8544 hlua_class_function(gL.T, "set_status", hlua_applet_http_status);
8545 hlua_class_function(gL.T, "start_response", hlua_applet_http_start_response);
8546
8547 lua_settable(gL.T, -3);
8548
8549 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008550 class_applet_http_ref = hlua_register_metatable(gL.T, CLASS_APPLET_HTTP);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008551
8552 /*
8553 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008554 * Register class TXN
8555 *
8556 */
8557
8558 /* Create and fill the metatable. */
8559 lua_newtable(gL.T);
8560
Ilya Shipitsind4259502020-04-08 01:07:56 +05008561 /* Create and fill the __index entry. */
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008562 lua_pushstring(gL.T, "__index");
8563 lua_newtable(gL.T);
8564
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01008565 /* Register Lua functions. */
Patrick Hemmer268a7072018-05-11 12:52:31 -04008566 hlua_class_function(gL.T, "set_priv", hlua_set_priv);
8567 hlua_class_function(gL.T, "get_priv", hlua_get_priv);
8568 hlua_class_function(gL.T, "set_var", hlua_set_var);
8569 hlua_class_function(gL.T, "unset_var", hlua_unset_var);
8570 hlua_class_function(gL.T, "get_var", hlua_get_var);
8571 hlua_class_function(gL.T, "done", hlua_txn_done);
Christopher Faulet700d9e82020-01-31 12:21:52 +01008572 hlua_class_function(gL.T, "reply", hlua_txn_reply_new);
Patrick Hemmer268a7072018-05-11 12:52:31 -04008573 hlua_class_function(gL.T, "set_loglevel", hlua_txn_set_loglevel);
8574 hlua_class_function(gL.T, "set_tos", hlua_txn_set_tos);
8575 hlua_class_function(gL.T, "set_mark", hlua_txn_set_mark);
8576 hlua_class_function(gL.T, "set_priority_class", hlua_txn_set_priority_class);
8577 hlua_class_function(gL.T, "set_priority_offset", hlua_txn_set_priority_offset);
8578 hlua_class_function(gL.T, "deflog", hlua_txn_deflog);
8579 hlua_class_function(gL.T, "log", hlua_txn_log);
8580 hlua_class_function(gL.T, "Debug", hlua_txn_log_debug);
8581 hlua_class_function(gL.T, "Info", hlua_txn_log_info);
8582 hlua_class_function(gL.T, "Warning", hlua_txn_log_warning);
8583 hlua_class_function(gL.T, "Alert", hlua_txn_log_alert);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01008584
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008585 lua_rawset(gL.T, -3);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008586
8587 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008588 class_txn_ref = hlua_register_metatable(gL.T, CLASS_TXN);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008589
8590 /*
8591 *
Christopher Faulet700d9e82020-01-31 12:21:52 +01008592 * Register class reply
8593 *
8594 */
8595 lua_newtable(gL.T);
8596 lua_pushstring(gL.T, "__index");
8597 lua_newtable(gL.T);
8598 hlua_class_function(gL.T, "set_status", hlua_txn_reply_set_status);
8599 hlua_class_function(gL.T, "add_header", hlua_txn_reply_add_header);
8600 hlua_class_function(gL.T, "del_header", hlua_txn_reply_del_header);
8601 hlua_class_function(gL.T, "set_body", hlua_txn_reply_set_body);
8602 lua_settable(gL.T, -3); /* Sets the __index entry. */
8603 class_txn_reply_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
8604
8605
8606 /*
8607 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008608 * Register class Socket
8609 *
8610 */
8611
8612 /* Create and fill the metatable. */
8613 lua_newtable(gL.T);
8614
Ilya Shipitsind4259502020-04-08 01:07:56 +05008615 /* Create and fill the __index entry. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008616 lua_pushstring(gL.T, "__index");
8617 lua_newtable(gL.T);
8618
Baptiste Assmann84bb4932015-03-02 21:40:06 +01008619#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008620 hlua_class_function(gL.T, "connect_ssl", hlua_socket_connect_ssl);
Baptiste Assmann84bb4932015-03-02 21:40:06 +01008621#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008622 hlua_class_function(gL.T, "connect", hlua_socket_connect);
8623 hlua_class_function(gL.T, "send", hlua_socket_send);
8624 hlua_class_function(gL.T, "receive", hlua_socket_receive);
8625 hlua_class_function(gL.T, "close", hlua_socket_close);
8626 hlua_class_function(gL.T, "getpeername", hlua_socket_getpeername);
8627 hlua_class_function(gL.T, "getsockname", hlua_socket_getsockname);
8628 hlua_class_function(gL.T, "setoption", hlua_socket_setoption);
8629 hlua_class_function(gL.T, "settimeout", hlua_socket_settimeout);
8630
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008631 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008632
8633 /* Register the garbage collector entry. */
8634 lua_pushstring(gL.T, "__gc");
8635 lua_pushcclosure(gL.T, hlua_socket_gc, 0);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008636 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008637
8638 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008639 class_socket_ref = hlua_register_metatable(gL.T, CLASS_SOCKET);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008640
8641 /* Proxy and server configuration initialisation. */
8642 memset(&socket_proxy, 0, sizeof(socket_proxy));
8643 init_new_proxy(&socket_proxy);
8644 socket_proxy.parent = NULL;
8645 socket_proxy.last_change = now.tv_sec;
8646 socket_proxy.id = "LUA-SOCKET";
8647 socket_proxy.cap = PR_CAP_FE | PR_CAP_BE;
8648 socket_proxy.maxconn = 0;
8649 socket_proxy.accept = NULL;
8650 socket_proxy.options2 |= PR_O2_INDEPSTR;
8651 socket_proxy.srv = NULL;
8652 socket_proxy.conn_retries = 0;
8653 socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */
8654
8655 /* Init TCP server: unchanged parameters */
8656 memset(&socket_tcp, 0, sizeof(socket_tcp));
8657 socket_tcp.next = NULL;
8658 socket_tcp.proxy = &socket_proxy;
8659 socket_tcp.obj_type = OBJ_TYPE_SERVER;
8660 LIST_INIT(&socket_tcp.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04008661 socket_tcp.pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02008662 socket_tcp.idle_conns = NULL;
8663 socket_tcp.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02008664 socket_tcp.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008665 socket_tcp.last_change = 0;
8666 socket_tcp.id = "LUA-TCP-CONN";
8667 socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8668 socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8669 socket_tcp.pp_opts = 0; /* Remove proxy protocol. */
8670
8671 /* XXX: Copy default parameter from default server,
8672 * but the default server is not initialized.
8673 */
8674 socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue;
8675 socket_tcp.minconn = socket_proxy.defsrv.minconn;
8676 socket_tcp.maxconn = socket_proxy.defsrv.maxconn;
8677 socket_tcp.slowstart = socket_proxy.defsrv.slowstart;
8678 socket_tcp.onerror = socket_proxy.defsrv.onerror;
8679 socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
8680 socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup;
8681 socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
8682 socket_tcp.uweight = socket_proxy.defsrv.iweight;
8683 socket_tcp.iweight = socket_proxy.defsrv.iweight;
8684
8685 socket_tcp.check.status = HCHK_STATUS_INI;
8686 socket_tcp.check.rise = socket_proxy.defsrv.check.rise;
8687 socket_tcp.check.fall = socket_proxy.defsrv.check.fall;
8688 socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */
8689 socket_tcp.check.server = &socket_tcp;
8690
8691 socket_tcp.agent.status = HCHK_STATUS_INI;
8692 socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise;
8693 socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall;
8694 socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */
8695 socket_tcp.agent.server = &socket_tcp;
8696
Willy Tarreaua261e9b2016-12-22 20:44:00 +01008697 socket_tcp.xprt = xprt_get(XPRT_RAW);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008698
8699#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008700 /* Init TCP server: unchanged parameters */
8701 memset(&socket_ssl, 0, sizeof(socket_ssl));
8702 socket_ssl.next = NULL;
8703 socket_ssl.proxy = &socket_proxy;
8704 socket_ssl.obj_type = OBJ_TYPE_SERVER;
8705 LIST_INIT(&socket_ssl.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04008706 socket_ssl.pendconns = EB_ROOT;
Willy Tarreaub784b352019-02-07 14:48:24 +01008707 socket_ssl.idle_conns = NULL;
8708 socket_ssl.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02008709 socket_ssl.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008710 socket_ssl.last_change = 0;
8711 socket_ssl.id = "LUA-SSL-CONN";
8712 socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8713 socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8714 socket_ssl.pp_opts = 0; /* Remove proxy protocol. */
8715
8716 /* XXX: Copy default parameter from default server,
8717 * but the default server is not initialized.
8718 */
8719 socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue;
8720 socket_ssl.minconn = socket_proxy.defsrv.minconn;
8721 socket_ssl.maxconn = socket_proxy.defsrv.maxconn;
8722 socket_ssl.slowstart = socket_proxy.defsrv.slowstart;
8723 socket_ssl.onerror = socket_proxy.defsrv.onerror;
8724 socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
8725 socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup;
8726 socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
8727 socket_ssl.uweight = socket_proxy.defsrv.iweight;
8728 socket_ssl.iweight = socket_proxy.defsrv.iweight;
8729
8730 socket_ssl.check.status = HCHK_STATUS_INI;
8731 socket_ssl.check.rise = socket_proxy.defsrv.check.rise;
8732 socket_ssl.check.fall = socket_proxy.defsrv.check.fall;
8733 socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */
8734 socket_ssl.check.server = &socket_ssl;
8735
8736 socket_ssl.agent.status = HCHK_STATUS_INI;
8737 socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise;
8738 socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall;
8739 socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */
8740 socket_ssl.agent.server = &socket_ssl;
8741
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008742 socket_ssl.use_ssl = 1;
Willy Tarreaua261e9b2016-12-22 20:44:00 +01008743 socket_ssl.xprt = xprt_get(XPRT_SSL);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008744
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008745 for (idx = 0; args[idx] != NULL; idx++) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008746 if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */
8747 /*
8748 *
8749 * If the keyword is not known, we can search in the registered
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008750 * server keywords. This is useful to configure special SSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008751 * features like client certificates and ssl_verify.
8752 *
8753 */
8754 tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error);
8755 if (tmp_error != 0) {
8756 fprintf(stderr, "INTERNAL ERROR: %s\n", error);
8757 abort(); /* This must be never arrives because the command line
8758 not editable by the user. */
8759 }
8760 idx += kw->skip;
8761 }
8762 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008763#endif
Thierry Fournier75933d42016-01-21 09:30:18 +01008764
8765 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008766}
Willy Tarreaubb57d942016-12-21 19:04:56 +01008767
Tim Duesterhusd0c0ca22020-07-04 11:53:26 +02008768static void hlua_deinit()
8769{
8770 lua_close(gL.T);
8771}
8772
8773REGISTER_POST_DEINIT(hlua_deinit);
8774
Willy Tarreau80713382018-11-26 10:19:54 +01008775static void hlua_register_build_options(void)
8776{
Willy Tarreaubb57d942016-12-21 19:04:56 +01008777 char *ptr = NULL;
Willy Tarreau80713382018-11-26 10:19:54 +01008778
Willy Tarreaubb57d942016-12-21 19:04:56 +01008779 memprintf(&ptr, "Built with Lua version : %s", LUA_RELEASE);
8780 hap_register_build_opts(ptr, 1);
8781}
Willy Tarreau80713382018-11-26 10:19:54 +01008782
8783INITCALL0(STG_REGISTER, hlua_register_build_options);