blob: 23d2aa040a30ab80fac9476c8d656d1ff9dbd36a [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>
Mark Lakes56cc1252018-03-27 09:48:06 +020014#include <limits.h>
Thierry FOURNIERbabae282015-09-17 11:36:37 +020015#include <setjmp.h>
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010016
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010017#include <lauxlib.h>
18#include <lua.h>
19#include <lualib.h>
20
Thierry FOURNIER463119c2015-03-10 00:35:36 +010021#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 503
22#error "Requires Lua 5.3 or later."
Cyril Bontédc0306e2015-03-02 00:08:40 +010023#endif
24
Thierry FOURNIER380d0932015-01-23 14:27:52 +010025#include <ebpttree.h>
26
27#include <common/cfgparse.h>
Willy Tarreaub059b892018-10-16 17:57:36 +020028#include <common/compiler.h>
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +020029#include <common/hathreads.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010030#include <common/initcall.h>
31#include <common/xref.h>
Christopher Faulet724a12c2018-12-13 22:12:15 +010032#include <common/h1.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010033
William Lallemand9ed62032016-11-21 17:49:11 +010034#include <types/cli.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010035#include <types/hlua.h>
36#include <types/proxy.h>
William Lallemand9ed62032016-11-21 17:49:11 +010037#include <types/stats.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010038
Thierry FOURNIER55da1652015-01-23 11:36:30 +010039#include <proto/arg.h>
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020040#include <proto/applet.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010041#include <proto/channel.h>
William Lallemand9ed62032016-11-21 17:49:11 +010042#include <proto/cli.h>
Willy Tarreaua71f6422016-11-16 17:00:14 +010043#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010044#include <proto/stats.h>
Thierry FOURNIER9a819e72015-02-16 20:22:55 +010045#include <proto/hdr_idx.h>
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +010046#include <proto/hlua.h>
Thierry Fournierfb0b5462016-01-21 09:28:58 +010047#include <proto/hlua_fcn.h>
Willy Tarreau79e57332018-10-02 16:01:16 +020048#include <proto/http_fetch.h>
Christopher Faulet724a12c2018-12-13 22:12:15 +010049#include <proto/http_htx.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020050#include <proto/http_rules.h>
Thierry FOURNIER3def3932015-04-07 11:27:54 +020051#include <proto/map.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010052#include <proto/obj_type.h>
Patrick Hemmer268a7072018-05-11 12:52:31 -040053#include <proto/queue.h>
Thierry FOURNIER83758bb2015-02-04 13:21:04 +010054#include <proto/pattern.h>
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +010055#include <proto/payload.h>
56#include <proto/proto_http.h>
57#include <proto/sample.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010058#include <proto/server.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020059#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020060#include <proto/stream.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010061#include <proto/stream_interface.h>
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +010062#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010063#include <proto/tcp_rules.h>
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +020064#include <proto/vars.h>
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +010065
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010066/* Lua uses longjmp to perform yield or throwing errors. This
67 * macro is used only for identifying the function that can
68 * not return because a longjmp is executed.
69 * __LJMP marks a prototype of hlua file that can use longjmp.
70 * WILL_LJMP() marks an lua function that will use longjmp.
71 * MAY_LJMP() marks an lua function that may use longjmp.
72 */
73#define __LJMP
Willy Tarreau4e7cc332018-10-20 17:45:48 +020074#define WILL_LJMP(func) do { func; my_unreachable(); } while(0)
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010075#define MAY_LJMP(func) func
76
Thierry FOURNIERbabae282015-09-17 11:36:37 +020077/* This couple of function executes securely some Lua calls outside of
78 * the lua runtime environment. Each Lua call can return a longjmp
79 * if it encounter a memory error.
80 *
81 * Lua documentation extract:
82 *
83 * If an error happens outside any protected environment, Lua calls
84 * a panic function (see lua_atpanic) and then calls abort, thus
85 * exiting the host application. Your panic function can avoid this
86 * exit by never returning (e.g., doing a long jump to your own
87 * recovery point outside Lua).
88 *
89 * The panic function runs as if it were a message handler (see
90 * §2.3); in particular, the error message is at the top of the
91 * stack. However, there is no guarantee about stack space. To push
92 * anything on the stack, the panic function must first check the
93 * available space (see §4.2).
94 *
95 * We must check all the Lua entry point. This includes:
96 * - The include/proto/hlua.h exported functions
97 * - the task wrapper function
98 * - The action wrapper function
99 * - The converters wrapper function
100 * - The sample-fetch wrapper functions
101 *
102 * It is tolerated that the initilisation function returns an abort.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800103 * Before each Lua abort, an error message is written on stderr.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200104 *
105 * The macro SET_SAFE_LJMP initialise the longjmp. The Macro
106 * RESET_SAFE_LJMP reset the longjmp. These function must be macro
107 * because they must be exists in the program stack when the longjmp
108 * is called.
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +0200109 *
110 * Note that the Lua processing is not really thread safe. It provides
111 * heavy system which consists to add our own lock function in the Lua
112 * code and recompile the library. This system will probably not accepted
113 * by maintainers of various distribs.
114 *
115 * Our main excution point of the Lua is the function lua_resume(). A
116 * quick looking on the Lua sources displays a lua_lock() a the start
117 * of function and a lua_unlock() at the end of the function. So I
118 * conclude that the Lua thread safe mode just perform a mutex around
119 * all execution. So I prefer to do this in the HAProxy code, it will be
120 * easier for distro maintainers.
121 *
122 * Note that the HAProxy lua functions rounded by the macro SET_SAFE_LJMP
123 * and RESET_SAFE_LJMP manipulates the Lua stack, so it will be careful
124 * to set mutex around these functions.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200125 */
Willy Tarreau86abe442018-11-25 20:12:18 +0100126__decl_spinlock(hlua_global_lock);
Thierry FOURNIERffbad792017-07-12 11:39:04 +0200127THREAD_LOCAL jmp_buf safe_ljmp_env;
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200128static int hlua_panic_safe(lua_State *L) { return 0; }
129static int hlua_panic_ljmp(lua_State *L) { longjmp(safe_ljmp_env, 1); }
130
131#define SET_SAFE_LJMP(__L) \
132 ({ \
133 int ret; \
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100134 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200135 if (setjmp(safe_ljmp_env) != 0) { \
136 lua_atpanic(__L, hlua_panic_safe); \
137 ret = 0; \
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100138 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200139 } else { \
140 lua_atpanic(__L, hlua_panic_ljmp); \
141 ret = 1; \
142 } \
143 ret; \
144 })
145
146/* If we are the last function catching Lua errors, we
147 * must reset the panic function.
148 */
149#define RESET_SAFE_LJMP(__L) \
150 do { \
151 lua_atpanic(__L, hlua_panic_safe); \
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100152 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock); \
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200153 } while(0)
154
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200155/* Applet status flags */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200156#define APPLET_DONE 0x01 /* applet processing is done. */
Christopher Faulet18c2e8d2019-03-01 12:02:08 +0100157/* unused: 0x02 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200158#define APPLET_HDR_SENT 0x04 /* Response header sent. */
159#define APPLET_CHUNKED 0x08 /* Use transfer encoding chunked. */
160#define APPLET_LAST_CHK 0x10 /* Last chunk sent. */
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +0100161#define APPLET_HTTP11 0x20 /* Last chunk sent. */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +0100162#define APPLET_RSP_SENT 0x40 /* The response was fully sent */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200163
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100164/* The main Lua execution context. */
165struct hlua gL;
166
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100167/* This is the memory pool containing struct lua for applets
168 * (including cli).
169 */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100170DECLARE_STATIC_POOL(pool_head_hlua, "hlua", sizeof(struct hlua));
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100171
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100172/* Used for Socket connection. */
173static struct proxy socket_proxy;
174static struct server socket_tcp;
175#ifdef USE_OPENSSL
176static struct server socket_ssl;
177#endif
178
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100179/* List head of the function called at the initialisation time. */
180struct list hlua_init_functions = LIST_HEAD_INIT(hlua_init_functions);
181
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100182/* The following variables contains the reference of the different
183 * Lua classes. These references are useful for identify metadata
184 * associated with an object.
185 */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100186static int class_txn_ref;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100187static int class_socket_ref;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +0100188static int class_channel_ref;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +0100189static int class_fetches_ref;
Thierry FOURNIER594afe72015-03-10 23:58:30 +0100190static int class_converters_ref;
Thierry FOURNIER08504f42015-03-16 14:17:08 +0100191static int class_http_ref;
Thierry FOURNIER3def3932015-04-07 11:27:54 +0200192static int class_map_ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200193static int class_applet_tcp_ref;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200194static int class_applet_http_ref;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100195
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100196/* Global Lua execution timeout. By default Lua, execution linked
Willy Tarreau87b09662015-04-03 00:22:06 +0200197 * with stream (actions, sample-fetches and converters) have a
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100198 * short timeout. Lua linked with tasks doesn't have a timeout
199 * because a task may remain alive during all the haproxy execution.
200 */
201static unsigned int hlua_timeout_session = 4000; /* session timeout. */
202static unsigned int hlua_timeout_task = TICK_ETERNITY; /* task timeout. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200203static unsigned int hlua_timeout_applet = 4000; /* applet timeout. */
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100204
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100205/* Interrupts the Lua processing each "hlua_nb_instruction" instructions.
206 * it is used for preventing infinite loops.
207 *
208 * I test the scheer with an infinite loop containing one incrementation
209 * and one test. I run this loop between 10 seconds, I raise a ceil of
210 * 710M loops from one interrupt each 9000 instructions, so I fix the value
211 * to one interrupt each 10 000 instructions.
212 *
213 * configured | Number of
214 * instructions | loops executed
215 * between two | in milions
216 * forced yields |
217 * ---------------+---------------
218 * 10 | 160
219 * 500 | 670
220 * 1000 | 680
221 * 5000 | 700
222 * 7000 | 700
223 * 8000 | 700
224 * 9000 | 710 <- ceil
225 * 10000 | 710
226 * 100000 | 710
227 * 1000000 | 710
228 *
229 */
230static unsigned int hlua_nb_instruction = 10000;
231
Willy Tarreau32f61e22015-03-18 17:54:59 +0100232/* Descriptor for the memory allocation state. If limit is not null, it will
233 * be enforced on any memory allocation.
234 */
235struct hlua_mem_allocator {
236 size_t allocated;
237 size_t limit;
238};
239
240static struct hlua_mem_allocator hlua_global_allocator;
241
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200242static const char error_500[] =
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200243 "HTTP/1.0 500 Internal Server Error\r\n"
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200244 "Cache-Control: no-cache\r\n"
245 "Connection: close\r\n"
246 "Content-Type: text/html\r\n"
247 "\r\n"
Joseph Herlant7fe15772018-11-15 10:07:32 -0800248 "<html><body><h1>500 Internal Server Error</h1>\nAn internal server error occurred.\n</body></html>\n";
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200249
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100250/* These functions converts types between HAProxy internal args or
251 * sample and LUA types. Another function permits to check if the
252 * LUA stack contains arguments according with an required ARG_T
253 * format.
254 */
255static int hlua_arg2lua(lua_State *L, const struct arg *arg);
256static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100257__LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100258 uint64_t mask, struct proxy *p);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100259static int hlua_smp2lua(lua_State *L, struct sample *smp);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100260static int hlua_smp2lua_str(lua_State *L, struct sample *smp);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100261static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp);
262
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200263__LJMP static int hlua_http_get_headers(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg);
264
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200265#define SEND_ERR(__be, __fmt, __args...) \
266 do { \
267 send_log(__be, LOG_ERR, __fmt, ## __args); \
268 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) \
Christopher Faulet767a84b2017-11-24 16:50:31 +0100269 ha_alert(__fmt, ## __args); \
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200270 } while (0)
271
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100272/* Used to check an Lua function type in the stack. It creates and
273 * returns a reference of the function. This function throws an
274 * error if the rgument is not a "function".
275 */
276__LJMP unsigned int hlua_checkfunction(lua_State *L, int argno)
277{
278 if (!lua_isfunction(L, argno)) {
Thierry FOURNIERfd1e9552018-02-23 18:41:18 +0100279 const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, argno));
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100280 WILL_LJMP(luaL_argerror(L, argno, msg));
281 }
282 lua_pushvalue(L, argno);
283 return luaL_ref(L, LUA_REGISTRYINDEX);
284}
285
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200286/* Return the string that is of the top of the stack. */
287const char *hlua_get_top_error_string(lua_State *L)
288{
289 if (lua_gettop(L) < 1)
290 return "unknown error";
291 if (lua_type(L, -1) != LUA_TSTRING)
292 return "unknown error";
293 return lua_tostring(L, -1);
294}
295
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200296__LJMP static const char *hlua_traceback(lua_State *L)
297{
298 lua_Debug ar;
299 int level = 0;
Willy Tarreau83061a82018-07-13 11:56:34 +0200300 struct buffer *msg = get_trash_chunk();
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200301 int filled = 0;
302
303 while (lua_getstack(L, level++, &ar)) {
304
305 /* Add separator */
306 if (filled)
307 chunk_appendf(msg, ", ");
308 filled = 1;
309
310 /* Fill fields:
311 * 'S': fills in the fields source, short_src, linedefined, lastlinedefined, and what;
312 * 'l': fills in the field currentline;
313 * 'n': fills in the field name and namewhat;
314 * 't': fills in the field istailcall;
315 */
316 lua_getinfo(L, "Slnt", &ar);
317
318 /* Append code localisation */
319 if (ar.currentline > 0)
320 chunk_appendf(msg, "%s:%d ", ar.short_src, ar.currentline);
321 else
322 chunk_appendf(msg, "%s ", ar.short_src);
323
324 /*
325 * Get function name
326 *
327 * if namewhat is no empty, name is defined.
328 * what contains "Lua" for Lua function, "C" for C function,
329 * or "main" for main code.
330 */
331 if (*ar.namewhat != '\0' && ar.name != NULL) /* is there a name from code? */
332 chunk_appendf(msg, "%s '%s'", ar.namewhat, ar.name); /* use it */
333
334 else if (*ar.what == 'm') /* "main", the code is not executed in a function */
335 chunk_appendf(msg, "main chunk");
336
337 else if (*ar.what != 'C') /* for Lua functions, use <file:line> */
338 chunk_appendf(msg, "C function line %d", ar.linedefined);
339
340 else /* nothing left... */
341 chunk_appendf(msg, "?");
342
343
344 /* Display tailed call */
345 if (ar.istailcall)
346 chunk_appendf(msg, " ...");
347 }
348
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200349 return msg->area;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +0200350}
351
352
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100353/* This function check the number of arguments available in the
354 * stack. If the number of arguments available is not the same
355 * then <nb> an error is throwed.
356 */
357__LJMP static inline void check_args(lua_State *L, int nb, char *fcn)
358{
359 if (lua_gettop(L) == nb)
360 return;
361 WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb));
362}
363
Mark Lakes22154b42018-01-29 14:38:40 -0800364/* This function pushes an error string prefixed by the file name
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100365 * and the line number where the error is encountered.
366 */
367static int hlua_pusherror(lua_State *L, const char *fmt, ...)
368{
369 va_list argp;
370 va_start(argp, fmt);
371 luaL_where(L, 1);
372 lua_pushvfstring(L, fmt, argp);
373 va_end(argp);
374 lua_concat(L, 2);
375 return 1;
376}
377
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100378/* This functions is used with sample fetch and converters. It
379 * converts the HAProxy configuration argument in a lua stack
380 * values.
381 *
382 * It takes an array of "arg", and each entry of the array is
383 * converted and pushed in the LUA stack.
384 */
385static int hlua_arg2lua(lua_State *L, const struct arg *arg)
386{
387 switch (arg->type) {
388 case ARGT_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100389 case ARGT_TIME:
390 case ARGT_SIZE:
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100391 lua_pushinteger(L, arg->data.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100392 break;
393
394 case ARGT_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200395 lua_pushlstring(L, arg->data.str.area, arg->data.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100396 break;
397
398 case ARGT_IPV4:
399 case ARGT_IPV6:
400 case ARGT_MSK4:
401 case ARGT_MSK6:
402 case ARGT_FE:
403 case ARGT_BE:
404 case ARGT_TAB:
405 case ARGT_SRV:
406 case ARGT_USR:
407 case ARGT_MAP:
408 default:
409 lua_pushnil(L);
410 break;
411 }
412 return 1;
413}
414
415/* This function take one entrie in an LUA stack at the index "ud",
416 * and try to convert it in an HAProxy argument entry. This is useful
417 * with sample fetch wrappers. The input arguments are gived to the
418 * lua wrapper and converted as arg list by thi function.
419 */
420static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg)
421{
422 switch (lua_type(L, ud)) {
423
424 case LUA_TNUMBER:
425 case LUA_TBOOLEAN:
426 arg->type = ARGT_SINT;
427 arg->data.sint = lua_tointeger(L, ud);
428 break;
429
430 case LUA_TSTRING:
431 arg->type = ARGT_STR;
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200432 arg->data.str.area = (char *)lua_tolstring(L, ud, (size_t *)&arg->data.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100433 break;
434
435 case LUA_TUSERDATA:
436 case LUA_TNIL:
437 case LUA_TTABLE:
438 case LUA_TFUNCTION:
439 case LUA_TTHREAD:
440 case LUA_TLIGHTUSERDATA:
441 arg->type = ARGT_SINT;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200442 arg->data.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100443 break;
444 }
445 return 1;
446}
447
448/* the following functions are used to convert a struct sample
449 * in Lua type. This useful to convert the return of the
450 * fetchs or converters.
451 */
Willy Tarreau5eadada2015-03-10 17:28:54 +0100452static int hlua_smp2lua(lua_State *L, struct sample *smp)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100453{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200454 switch (smp->data.type) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100455 case SMP_T_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100456 case SMP_T_BOOL:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200457 lua_pushinteger(L, smp->data.u.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100458 break;
459
460 case SMP_T_BIN:
461 case SMP_T_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200462 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100463 break;
464
465 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200466 switch (smp->data.u.meth.meth) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100467 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
468 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
469 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
470 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
471 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
472 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
473 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
474 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
475 case HTTP_METH_OTHER:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200476 lua_pushlstring(L, smp->data.u.meth.str.area, smp->data.u.meth.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100477 break;
478 default:
479 lua_pushnil(L);
480 break;
481 }
482 break;
483
484 case SMP_T_IPV4:
485 case SMP_T_IPV6:
486 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200487 if (sample_casts[smp->data.type][SMP_T_STR] &&
488 sample_casts[smp->data.type][SMP_T_STR](smp))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200489 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100490 else
491 lua_pushnil(L);
492 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100493 default:
494 lua_pushnil(L);
495 break;
496 }
497 return 1;
498}
499
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100500/* the following functions are used to convert a struct sample
501 * in Lua strings. This is useful to convert the return of the
502 * fetchs or converters.
503 */
504static int hlua_smp2lua_str(lua_State *L, struct sample *smp)
505{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200506 switch (smp->data.type) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100507
508 case SMP_T_BIN:
509 case SMP_T_STR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200510 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100511 break;
512
513 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200514 switch (smp->data.u.meth.meth) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100515 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
516 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
517 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
518 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
519 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
520 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
521 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
522 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
523 case HTTP_METH_OTHER:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200524 lua_pushlstring(L, smp->data.u.meth.str.area, smp->data.u.meth.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100525 break;
526 default:
527 lua_pushstring(L, "");
528 break;
529 }
530 break;
531
532 case SMP_T_SINT:
533 case SMP_T_BOOL:
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100534 case SMP_T_IPV4:
535 case SMP_T_IPV6:
536 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200537 if (sample_casts[smp->data.type][SMP_T_STR] &&
538 sample_casts[smp->data.type][SMP_T_STR](smp))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200539 lua_pushlstring(L, smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100540 else
541 lua_pushstring(L, "");
542 break;
543 default:
544 lua_pushstring(L, "");
545 break;
546 }
547 return 1;
548}
549
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100550/* the following functions are used to convert an Lua type in a
551 * struct sample. This is useful to provide data from a converter
552 * to the LUA code.
553 */
554static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp)
555{
556 switch (lua_type(L, ud)) {
557
558 case LUA_TNUMBER:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200559 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200560 smp->data.u.sint = lua_tointeger(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100561 break;
562
563
564 case LUA_TBOOLEAN:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200565 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200566 smp->data.u.sint = lua_toboolean(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100567 break;
568
569 case LUA_TSTRING:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200570 smp->data.type = SMP_T_STR;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100571 smp->flags |= SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200572 smp->data.u.str.area = (char *)lua_tolstring(L, ud, (size_t *)&smp->data.u.str.data);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100573 break;
574
575 case LUA_TUSERDATA:
576 case LUA_TNIL:
577 case LUA_TTABLE:
578 case LUA_TFUNCTION:
579 case LUA_TTHREAD:
580 case LUA_TLIGHTUSERDATA:
Thierry FOURNIER93405e12015-08-26 14:19:03 +0200581 case LUA_TNONE:
582 default:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200583 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200584 smp->data.u.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100585 break;
586 }
587 return 1;
588}
589
590/* This function check the "argp" builded by another conversion function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800591 * is in accord with the expected argp defined by the "mask". The function
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100592 * returns true or false. It can be adjust the types if there compatibles.
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100593 *
594 * This function assumes thant the argp argument contains ARGM_NBARGS + 1
595 * entries.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100596 */
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100597__LJMP int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100598 uint64_t mask, struct proxy *p)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100599{
600 int min_arg;
601 int idx;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100602 struct proxy *px;
603 char *sname, *pname;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100604
605 idx = 0;
606 min_arg = ARGM(mask);
607 mask >>= ARGM_BITS;
608
609 while (1) {
610
611 /* Check oversize. */
612 if (idx >= ARGM_NBARGS && argp[idx].type != ARGT_STOP) {
Cyril Bonté577a36a2015-03-02 00:08:38 +0100613 WILL_LJMP(luaL_argerror(L, first + idx, "Malformed argument mask"));
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100614 }
615
616 /* Check for mandatory arguments. */
617 if (argp[idx].type == ARGT_STOP) {
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100618 if (idx < min_arg) {
619
620 /* If miss other argument than the first one, we return an error. */
621 if (idx > 0)
622 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
623
624 /* If first argument have a certain type, some default values
625 * may be used. See the function smp_resolve_args().
626 */
627 switch (mask & ARGT_MASK) {
628
629 case ARGT_FE:
630 if (!(p->cap & PR_CAP_FE))
631 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
632 argp[idx].data.prx = p;
633 argp[idx].type = ARGT_FE;
634 argp[idx+1].type = ARGT_STOP;
635 break;
636
637 case ARGT_BE:
638 if (!(p->cap & PR_CAP_BE))
639 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
640 argp[idx].data.prx = p;
641 argp[idx].type = ARGT_BE;
642 argp[idx+1].type = ARGT_STOP;
643 break;
644
645 case ARGT_TAB:
646 argp[idx].data.prx = p;
647 argp[idx].type = ARGT_TAB;
648 argp[idx+1].type = ARGT_STOP;
649 break;
650
651 default:
652 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
653 break;
654 }
655 }
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100656 return 0;
657 }
658
659 /* Check for exceed the number of requiered argument. */
660 if ((mask & ARGT_MASK) == ARGT_STOP &&
661 argp[idx].type != ARGT_STOP) {
662 WILL_LJMP(luaL_argerror(L, first + idx, "Last argument expected"));
663 }
664
665 if ((mask & ARGT_MASK) == ARGT_STOP &&
666 argp[idx].type == ARGT_STOP) {
667 return 0;
668 }
669
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100670 /* Convert some argument types. */
671 switch (mask & ARGT_MASK) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100672 case ARGT_SINT:
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100673 if (argp[idx].type != ARGT_SINT)
674 WILL_LJMP(luaL_argerror(L, first + idx, "integer expected"));
675 argp[idx].type = ARGT_SINT;
676 break;
677
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100678 case ARGT_TIME:
679 if (argp[idx].type != ARGT_SINT)
680 WILL_LJMP(luaL_argerror(L, first + idx, "integer expected"));
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200681 argp[idx].type = ARGT_TIME;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100682 break;
683
684 case ARGT_SIZE:
685 if (argp[idx].type != ARGT_SINT)
686 WILL_LJMP(luaL_argerror(L, first + idx, "integer expected"));
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200687 argp[idx].type = ARGT_SIZE;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100688 break;
689
690 case ARGT_FE:
691 if (argp[idx].type != ARGT_STR)
692 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200693 memcpy(trash.area, argp[idx].data.str.area,
694 argp[idx].data.str.data);
695 trash.area[argp[idx].data.str.data] = 0;
696 argp[idx].data.prx = proxy_fe_by_name(trash.area);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100697 if (!argp[idx].data.prx)
698 WILL_LJMP(luaL_argerror(L, first + idx, "frontend doesn't exist"));
699 argp[idx].type = ARGT_FE;
700 break;
701
702 case ARGT_BE:
703 if (argp[idx].type != ARGT_STR)
704 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200705 memcpy(trash.area, argp[idx].data.str.area,
706 argp[idx].data.str.data);
707 trash.area[argp[idx].data.str.data] = 0;
708 argp[idx].data.prx = proxy_be_by_name(trash.area);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100709 if (!argp[idx].data.prx)
710 WILL_LJMP(luaL_argerror(L, first + idx, "backend doesn't exist"));
711 argp[idx].type = ARGT_BE;
712 break;
713
714 case ARGT_TAB:
715 if (argp[idx].type != ARGT_STR)
716 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200717 memcpy(trash.area, argp[idx].data.str.area,
718 argp[idx].data.str.data);
719 trash.area[argp[idx].data.str.data] = 0;
720 argp[idx].data.prx = proxy_tbl_by_name(trash.area);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100721 if (!argp[idx].data.prx)
722 WILL_LJMP(luaL_argerror(L, first + idx, "table doesn't exist"));
723 argp[idx].type = ARGT_TAB;
724 break;
725
726 case ARGT_SRV:
727 if (argp[idx].type != ARGT_STR)
728 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200729 memcpy(trash.area, argp[idx].data.str.area,
730 argp[idx].data.str.data);
731 trash.area[argp[idx].data.str.data] = 0;
732 sname = strrchr(trash.area, '/');
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100733 if (sname) {
734 *sname++ = '\0';
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200735 pname = trash.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200736 px = proxy_be_by_name(pname);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100737 if (!px)
738 WILL_LJMP(luaL_argerror(L, first + idx, "backend doesn't exist"));
739 }
740 else {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200741 sname = trash.area;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100742 px = p;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100743 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100744 argp[idx].data.srv = findserver(px, sname);
745 if (!argp[idx].data.srv)
746 WILL_LJMP(luaL_argerror(L, first + idx, "server doesn't exist"));
747 argp[idx].type = ARGT_SRV;
748 break;
749
750 case ARGT_IPV4:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200751 memcpy(trash.area, argp[idx].data.str.area,
752 argp[idx].data.str.data);
753 trash.area[argp[idx].data.str.data] = 0;
754 if (inet_pton(AF_INET, trash.area, &argp[idx].data.ipv4))
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100755 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv4 address"));
756 argp[idx].type = ARGT_IPV4;
757 break;
758
759 case ARGT_MSK4:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200760 memcpy(trash.area, argp[idx].data.str.area,
761 argp[idx].data.str.data);
762 trash.area[argp[idx].data.str.data] = 0;
763 if (!str2mask(trash.area, &argp[idx].data.ipv4))
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100764 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv4 mask"));
765 argp[idx].type = ARGT_MSK4;
766 break;
767
768 case ARGT_IPV6:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200769 memcpy(trash.area, argp[idx].data.str.area,
770 argp[idx].data.str.data);
771 trash.area[argp[idx].data.str.data] = 0;
772 if (inet_pton(AF_INET6, trash.area, &argp[idx].data.ipv6))
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100773 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv6 address"));
774 argp[idx].type = ARGT_IPV6;
775 break;
776
777 case ARGT_MSK6:
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200778 memcpy(trash.area, argp[idx].data.str.area,
779 argp[idx].data.str.data);
780 trash.area[argp[idx].data.str.data] = 0;
781 if (!str2mask6(trash.area, &argp[idx].data.ipv6))
Tim Duesterhusb814da62018-01-25 16:24:50 +0100782 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv6 mask"));
783 argp[idx].type = ARGT_MSK6;
784 break;
785
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100786 case ARGT_MAP:
787 case ARGT_REG:
788 case ARGT_USR:
789 WILL_LJMP(luaL_argerror(L, first + idx, "type not yet supported"));
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100790 break;
791 }
792
793 /* Check for type of argument. */
794 if ((mask & ARGT_MASK) != argp[idx].type) {
795 const char *msg = lua_pushfstring(L, "'%s' expected, got '%s'",
796 arg_type_names[(mask & ARGT_MASK)],
797 arg_type_names[argp[idx].type & ARGT_MASK]);
798 WILL_LJMP(luaL_argerror(L, first + idx, msg));
799 }
800
801 /* Next argument. */
802 mask >>= ARGT_BITS;
803 idx++;
804 }
805}
806
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100807/*
808 * The following functions are used to make correspondance between the the
809 * executed lua pointer and the "struct hlua *" that contain the context.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100810 *
811 * - hlua_gethlua : return the hlua context associated with an lua_State.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100812 * - hlua_sethlua : create the association between hlua context and lua_state.
813 */
814static inline struct hlua *hlua_gethlua(lua_State *L)
815{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100816 struct hlua **hlua = lua_getextraspace(L);
817 return *hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100818}
819static inline void hlua_sethlua(struct hlua *hlua)
820{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100821 struct hlua **hlua_store = lua_getextraspace(hlua->T);
822 *hlua_store = hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100823}
824
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100825/* This function is used to send logs. It try to send on screen (stderr)
826 * and on the default syslog server.
827 */
828static inline void hlua_sendlog(struct proxy *px, int level, const char *msg)
829{
830 struct tm tm;
831 char *p;
832
833 /* Cleanup the log message. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200834 p = trash.area;
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100835 for (; *msg != '\0'; msg++, p++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200836 if (p >= trash.area + trash.size - 1) {
Thierry FOURNIERccf00632015-09-16 12:47:03 +0200837 /* Break the message if exceed the buffer size. */
838 *(p-4) = ' ';
839 *(p-3) = '.';
840 *(p-2) = '.';
841 *(p-1) = '.';
842 break;
843 }
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100844 if (isprint(*msg))
845 *p = *msg;
846 else
847 *p = '.';
848 }
849 *p = '\0';
850
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200851 send_log(px, level, "%s\n", trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100852 if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
Willy Tarreaua678b432015-08-28 10:14:59 +0200853 get_localtime(date.tv_sec, &tm);
854 fprintf(stderr, "[%s] %03d/%02d%02d%02d (%d) : %s\n",
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100855 log_levels[level], tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec,
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200856 (int)getpid(), trash.area);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100857 fflush(stderr);
858 }
859}
860
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100861/* This function just ensure that the yield will be always
862 * returned with a timeout and permit to set some flags
863 */
864__LJMP void hlua_yieldk(lua_State *L, int nresults, int ctx,
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100865 lua_KFunction k, int timeout, unsigned int flags)
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100866{
867 struct hlua *hlua = hlua_gethlua(L);
868
869 /* Set the wake timeout. If timeout is required, we set
870 * the expiration time.
871 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +0200872 hlua->wake_time = timeout;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100873
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +0100874 hlua->flags |= flags;
875
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100876 /* Process the yield. */
Willy Tarreau9635e032018-10-16 17:52:55 +0200877 MAY_LJMP(lua_yieldk(L, nresults, ctx, k));
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100878}
879
Willy Tarreau87b09662015-04-03 00:22:06 +0200880/* This function initialises the Lua environment stored in the stream.
881 * It must be called at the start of the stream. This function creates
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100882 * an LUA coroutine. It can not be use to crete the main LUA context.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200883 *
884 * This function is particular. it initialises a new Lua thread. If the
885 * initialisation fails (example: out of memory error), the lua function
886 * throws an error (longjmp).
887 *
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100888 * In some case (at least one), this function can be called from safe
889 * environement, so we must not initialise it. While the support of
890 * threads appear, the safe environment set a lock to ensure only one
891 * Lua execution at a time. If we initialize safe environment in another
892 * safe environmenet, we have a dead lock.
893 *
894 * set "already_safe" true if the context is initialized form safe
895 * Lua fonction.
896 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800897 * This function manipulates two Lua stacks: the main and the thread. Only
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200898 * the main stack can fail. The thread is not manipulated. This function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -0800899 * MUST NOT manipulate the created thread stack state, because it is not
900 * proctected against errors thrown by the thread stack.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100901 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100902int hlua_ctx_init(struct hlua *lua, struct task *task, int already_safe)
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100903{
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100904 if (!already_safe) {
905 if (!SET_SAFE_LJMP(gL.T)) {
906 lua->Tref = LUA_REFNIL;
907 return 0;
908 }
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200909 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100910 lua->Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +0100911 lua->flags = 0;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100912 LIST_INIT(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100913 lua->T = lua_newthread(gL.T);
914 if (!lua->T) {
915 lua->Tref = LUA_REFNIL;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100916 if (!already_safe)
917 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100918 return 0;
919 }
920 hlua_sethlua(lua);
921 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
922 lua->task = task;
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +0100923 if (!already_safe)
924 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100925 return 1;
926}
927
Willy Tarreau87b09662015-04-03 00:22:06 +0200928/* Used to destroy the Lua coroutine when the attached stream or task
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100929 * is destroyed. The destroy also the memory context. The struct "lua"
930 * is not freed.
931 */
932void hlua_ctx_destroy(struct hlua *lua)
933{
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100934 if (!lua)
Thierry FOURNIERa718b292015-03-04 16:48:34 +0100935 return;
936
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100937 if (!lua->T)
938 goto end;
939
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100940 /* Purge all the pending signals. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +0200941 notification_purge(&lua->com);
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100942
Thierry FOURNIER75d02082017-07-12 13:41:33 +0200943 if (!SET_SAFE_LJMP(lua->T))
944 return;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100945 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
Thierry FOURNIER75d02082017-07-12 13:41:33 +0200946 RESET_SAFE_LJMP(lua->T);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +0200947
Thierry FOURNIER75d02082017-07-12 13:41:33 +0200948 if (!SET_SAFE_LJMP(gL.T))
949 return;
950 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
951 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +0200952 /* Forces a garbage collecting process. If the Lua program is finished
953 * without error, we run the GC on the thread pointer. Its freed all
954 * the unused memory.
955 * If the thread is finnish with an error or is currently yielded,
956 * it seems that the GC applied on the thread doesn't clean anything,
957 * so e run the GC on the main thread.
958 * NOTE: maybe this action locks all the Lua threads untiml the en of
959 * the garbage collection.
960 */
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +0200961 if (lua->flags & HLUA_MUST_GC) {
Thierry FOURNIER7bd10d52017-07-17 00:44:40 +0200962 if (!SET_SAFE_LJMP(gL.T))
Thierry FOURNIER75d02082017-07-12 13:41:33 +0200963 return;
Thierry FOURNIER7bd10d52017-07-17 00:44:40 +0200964 lua_gc(gL.T, LUA_GCCOLLECT, 0);
965 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +0200966 }
Thierry FOURNIER5a50a852015-09-23 16:59:28 +0200967
Thierry FOURNIERa7b536b2015-09-21 22:50:24 +0200968 lua->T = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100969
970end:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100971 pool_free(pool_head_hlua, lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100972}
973
974/* This function is used to restore the Lua context when a coroutine
975 * fails. This function copy the common memory between old coroutine
976 * and the new coroutine. The old coroutine is destroyed, and its
977 * replaced by the new coroutine.
978 * If the flag "keep_msg" is set, the last entry of the old is assumed
979 * as string error message and it is copied in the new stack.
980 */
981static int hlua_ctx_renew(struct hlua *lua, int keep_msg)
982{
983 lua_State *T;
984 int new_ref;
985
986 /* Renew the main LUA stack doesn't have sense. */
987 if (lua == &gL)
988 return 0;
989
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100990 /* New Lua coroutine. */
991 T = lua_newthread(gL.T);
992 if (!T)
993 return 0;
994
995 /* Copy last error message. */
996 if (keep_msg)
997 lua_xmove(lua->T, T, 1);
998
999 /* Copy data between the coroutines. */
1000 lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1001 lua_xmove(lua->T, T, 1);
1002 new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Valur poped. */
1003
1004 /* Destroy old data. */
1005 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
1006
1007 /* The thread is garbage collected by Lua. */
1008 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
1009
1010 /* Fill the struct with the new coroutine values. */
1011 lua->Mref = new_ref;
1012 lua->T = T;
1013 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
1014
1015 /* Set context. */
1016 hlua_sethlua(lua);
1017
1018 return 1;
1019}
1020
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001021void hlua_hook(lua_State *L, lua_Debug *ar)
1022{
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001023 struct hlua *hlua = hlua_gethlua(L);
1024
1025 /* Lua cannot yield when its returning from a function,
1026 * so, we can fix the interrupt hook to 1 instruction,
1027 * expecting that the function is finnished.
1028 */
1029 if (lua_gethookmask(L) & LUA_MASKRET) {
1030 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, 1);
1031 return;
1032 }
1033
1034 /* restore the interrupt condition. */
1035 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1036
1037 /* If we interrupt the Lua processing in yieldable state, we yield.
1038 * If the state is not yieldable, trying yield causes an error.
1039 */
1040 if (lua_isyieldable(L))
Willy Tarreau9635e032018-10-16 17:52:55 +02001041 MAY_LJMP(hlua_yieldk(L, 0, 0, NULL, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001042
Thierry FOURNIERa85cfb12015-03-13 14:50:06 +01001043 /* If we cannot yield, update the clock and check the timeout. */
1044 tv_update_date(0, 1);
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001045 hlua->run_time += now_ms - hlua->start_time;
1046 if (hlua->max_time && hlua->run_time >= hlua->max_time) {
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001047 lua_pushfstring(L, "execution timeout");
1048 WILL_LJMP(lua_error(L));
1049 }
1050
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001051 /* Update the start time. */
1052 hlua->start_time = now_ms;
1053
Thierry FOURNIERcae49c92015-03-06 14:05:24 +01001054 /* Try to interrupt the process at the end of the current
1055 * unyieldable function.
1056 */
1057 lua_sethook(hlua->T, hlua_hook, LUA_MASKRET|LUA_MASKCOUNT, hlua_nb_instruction);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001058}
1059
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001060/* This function start or resumes the Lua stack execution. If the flag
1061 * "yield_allowed" if no set and the LUA stack execution returns a yield
1062 * The function return an error.
1063 *
1064 * The function can returns 4 values:
1065 * - HLUA_E_OK : The execution is terminated without any errors.
1066 * - HLUA_E_AGAIN : The execution must continue at the next associated
1067 * task wakeup.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001068 * - HLUA_E_ERRMSG : An error has occurred, an error message is set in
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001069 * the top of the stack.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001070 * - HLUA_E_ERR : An error has occurred without error message.
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001071 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001072 * If an error occurred, the stack is renewed and it is ready to run new
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001073 * LUA code.
1074 */
1075static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed)
1076{
1077 int ret;
1078 const char *msg;
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001079 const char *trace;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001080
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001081 /* Initialise run time counter. */
1082 if (!HLUA_IS_RUNNING(lua))
1083 lua->run_time = 0;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001084
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001085 /* Lock the whole Lua execution. This lock must be before the
1086 * label "resume_execution".
1087 */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001088 HA_SPIN_LOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001089
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001090resume_execution:
1091
1092 /* This hook interrupts the Lua processing each 'hlua_nb_instruction'
1093 * instructions. it is used for preventing infinite loops.
1094 */
1095 lua_sethook(lua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1096
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001097 /* Remove all flags except the running flags. */
Thierry FOURNIER2f3867f2015-09-28 01:02:01 +02001098 HLUA_SET_RUN(lua);
1099 HLUA_CLR_CTRLYIELD(lua);
1100 HLUA_CLR_WAKERESWR(lua);
1101 HLUA_CLR_WAKEREQWR(lua);
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001102
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001103 /* Update the start time. */
1104 lua->start_time = now_ms;
1105
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001106 /* Call the function. */
1107 ret = lua_resume(lua->T, gL.T, lua->nargs);
1108 switch (ret) {
1109
1110 case LUA_OK:
1111 ret = HLUA_E_OK;
1112 break;
1113
1114 case LUA_YIELD:
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001115 /* Check if the execution timeout is expired. It it is the case, we
1116 * break the Lua execution.
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001117 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001118 tv_update_date(0, 1);
1119 lua->run_time += now_ms - lua->start_time;
1120 if (lua->max_time && lua->run_time > lua->max_time) {
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001121 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001122 ret = HLUA_E_ETMOUT;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001123 break;
1124 }
1125 /* Process the forced yield. if the general yield is not allowed or
1126 * if no task were associated this the current Lua execution
1127 * coroutine, we resume the execution. Else we want to return in the
1128 * scheduler and we want to be waked up again, to continue the
1129 * current Lua execution. So we schedule our own task.
1130 */
1131 if (HLUA_IS_CTRLYIELDING(lua)) {
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001132 if (!yield_allowed || !lua->task)
1133 goto resume_execution;
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001134 task_wakeup(lua->task, TASK_WOKEN_MSG);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001135 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001136 if (!yield_allowed) {
1137 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001138 ret = HLUA_E_YIELD;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001139 break;
1140 }
1141 ret = HLUA_E_AGAIN;
1142 break;
1143
1144 case LUA_ERRRUN:
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001145
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001146 /* Special exit case. The traditional exit is returned as an error
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001147 * because the errors ares the only one mean to return immediately
1148 * from and lua execution.
1149 */
1150 if (lua->flags & HLUA_EXIT) {
1151 ret = HLUA_E_OK;
Thierry FOURNIERe1587b32015-08-28 09:54:13 +02001152 hlua_ctx_renew(lua, 0);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001153 break;
1154 }
1155
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001156 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001157 if (!lua_checkstack(lua->T, 1)) {
1158 ret = HLUA_E_ERR;
1159 break;
1160 }
1161 msg = lua_tostring(lua->T, -1);
1162 lua_settop(lua->T, 0); /* Empty the stack. */
1163 lua_pop(lua->T, 1);
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001164 trace = hlua_traceback(lua->T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001165 if (msg)
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001166 lua_pushfstring(lua->T, "runtime error: %s from %s", msg, trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001167 else
Thierry FOURNIERfc044c92018-06-07 14:40:48 +02001168 lua_pushfstring(lua->T, "unknown runtime error from %s", trace);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001169 ret = HLUA_E_ERRMSG;
1170 break;
1171
1172 case LUA_ERRMEM:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001173 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001174 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001175 ret = HLUA_E_NOMEM;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001176 break;
1177
1178 case LUA_ERRERR:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001179 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001180 if (!lua_checkstack(lua->T, 1)) {
1181 ret = HLUA_E_ERR;
1182 break;
1183 }
1184 msg = lua_tostring(lua->T, -1);
1185 lua_settop(lua->T, 0); /* Empty the stack. */
1186 lua_pop(lua->T, 1);
1187 if (msg)
1188 lua_pushfstring(lua->T, "message handler error: %s", msg);
1189 else
1190 lua_pushfstring(lua->T, "message handler error");
1191 ret = HLUA_E_ERRMSG;
1192 break;
1193
1194 default:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001195 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001196 lua_settop(lua->T, 0); /* Empty the stack. */
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001197 ret = HLUA_E_ERR;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001198 break;
1199 }
1200
Thierry FOURNIER6ab4d8e2015-09-27 22:17:19 +02001201 /* This GC permits to destroy some object when a Lua timeout strikes. */
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02001202 if (lua->flags & HLUA_MUST_GC &&
1203 ret != HLUA_E_AGAIN)
Thierry FOURNIER6ab4d8e2015-09-27 22:17:19 +02001204 lua_gc(lua->T, LUA_GCCOLLECT, 0);
1205
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001206 switch (ret) {
1207 case HLUA_E_AGAIN:
1208 break;
1209
1210 case HLUA_E_ERRMSG:
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001211 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001212 hlua_ctx_renew(lua, 1);
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001213 HLUA_CLR_RUN(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001214 break;
1215
Thierry Fournierd5b073c2018-05-21 19:42:47 +02001216 case HLUA_E_ETMOUT:
1217 case HLUA_E_NOMEM:
1218 case HLUA_E_YIELD:
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001219 case HLUA_E_ERR:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001220 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001221 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001222 hlua_ctx_renew(lua, 0);
1223 break;
1224
1225 case HLUA_E_OK:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001226 HLUA_CLR_RUN(lua);
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001227 notification_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001228 break;
1229 }
1230
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001231 /* This is the main exit point, remove the Lua lock. */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001232 HA_SPIN_UNLOCK(LUA_LOCK, &hlua_global_lock);
Thierry FOURNIER61ba0e22017-07-12 11:41:21 +02001233
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001234 return ret;
1235}
1236
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001237/* This function exit the current code. */
1238__LJMP static int hlua_done(lua_State *L)
1239{
1240 struct hlua *hlua = hlua_gethlua(L);
1241
1242 hlua->flags |= HLUA_EXIT;
1243 WILL_LJMP(lua_error(L));
1244
1245 return 0;
1246}
1247
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001248/* This function is an LUA binding. It provides a function
1249 * for deleting ACL from a referenced ACL file.
1250 */
1251__LJMP static int hlua_del_acl(lua_State *L)
1252{
1253 const char *name;
1254 const char *key;
1255 struct pat_ref *ref;
1256
1257 MAY_LJMP(check_args(L, 2, "del_acl"));
1258
1259 name = MAY_LJMP(luaL_checkstring(L, 1));
1260 key = MAY_LJMP(luaL_checkstring(L, 2));
1261
1262 ref = pat_ref_lookup(name);
1263 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001264 WILL_LJMP(luaL_error(L, "'del_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001265
1266 pat_ref_delete(ref, key);
1267 return 0;
1268}
1269
1270/* This function is an LUA binding. It provides a function
1271 * for deleting map entry from a referenced map file.
1272 */
1273static int hlua_del_map(lua_State *L)
1274{
1275 const char *name;
1276 const char *key;
1277 struct pat_ref *ref;
1278
1279 MAY_LJMP(check_args(L, 2, "del_map"));
1280
1281 name = MAY_LJMP(luaL_checkstring(L, 1));
1282 key = MAY_LJMP(luaL_checkstring(L, 2));
1283
1284 ref = pat_ref_lookup(name);
1285 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001286 WILL_LJMP(luaL_error(L, "'del_map': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001287
1288 pat_ref_delete(ref, key);
1289 return 0;
1290}
1291
1292/* This function is an LUA binding. It provides a function
1293 * for adding ACL pattern from a referenced ACL file.
1294 */
1295static int hlua_add_acl(lua_State *L)
1296{
1297 const char *name;
1298 const char *key;
1299 struct pat_ref *ref;
1300
1301 MAY_LJMP(check_args(L, 2, "add_acl"));
1302
1303 name = MAY_LJMP(luaL_checkstring(L, 1));
1304 key = MAY_LJMP(luaL_checkstring(L, 2));
1305
1306 ref = pat_ref_lookup(name);
1307 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001308 WILL_LJMP(luaL_error(L, "'add_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001309
1310 if (pat_ref_find_elt(ref, key) == NULL)
1311 pat_ref_add(ref, key, NULL, NULL);
1312 return 0;
1313}
1314
1315/* This function is an LUA binding. It provides a function
1316 * for setting map pattern and sample from a referenced map
1317 * file.
1318 */
1319static int hlua_set_map(lua_State *L)
1320{
1321 const char *name;
1322 const char *key;
1323 const char *value;
1324 struct pat_ref *ref;
1325
1326 MAY_LJMP(check_args(L, 3, "set_map"));
1327
1328 name = MAY_LJMP(luaL_checkstring(L, 1));
1329 key = MAY_LJMP(luaL_checkstring(L, 2));
1330 value = MAY_LJMP(luaL_checkstring(L, 3));
1331
1332 ref = pat_ref_lookup(name);
1333 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001334 WILL_LJMP(luaL_error(L, "'set_map': unknown map file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001335
1336 if (pat_ref_find_elt(ref, key) != NULL)
1337 pat_ref_set(ref, key, value, NULL);
1338 else
1339 pat_ref_add(ref, key, value, NULL);
1340 return 0;
1341}
1342
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001343/* A class is a lot of memory that contain data. This data can be a table,
1344 * an integer or user data. This data is associated with a metatable. This
1345 * metatable have an original version registred in the global context with
1346 * the name of the object (_G[<name>] = <metable> ).
1347 *
1348 * A metable is a table that modify the standard behavior of a standard
1349 * access to the associated data. The entries of this new metatable are
1350 * defined as is:
1351 *
1352 * http://lua-users.org/wiki/MetatableEvents
1353 *
1354 * __index
1355 *
1356 * we access an absent field in a table, the result is nil. This is
1357 * true, but it is not the whole truth. Actually, such access triggers
1358 * the interpreter to look for an __index metamethod: If there is no
1359 * such method, as usually happens, then the access results in nil;
1360 * otherwise, the metamethod will provide the result.
1361 *
1362 * Control 'prototype' inheritance. When accessing "myTable[key]" and
1363 * the key does not appear in the table, but the metatable has an __index
1364 * property:
1365 *
1366 * - if the value is a function, the function is called, passing in the
1367 * table and the key; the return value of that function is returned as
1368 * the result.
1369 *
1370 * - if the value is another table, the value of the key in that table is
1371 * asked for and returned (and if it doesn't exist in that table, but that
1372 * table's metatable has an __index property, then it continues on up)
1373 *
1374 * - Use "rawget(myTable,key)" to skip this metamethod.
1375 *
1376 * http://www.lua.org/pil/13.4.1.html
1377 *
1378 * __newindex
1379 *
1380 * Like __index, but control property assignment.
1381 *
1382 * __mode - Control weak references. A string value with one or both
1383 * of the characters 'k' and 'v' which specifies that the the
1384 * keys and/or values in the table are weak references.
1385 *
1386 * __call - Treat a table like a function. When a table is followed by
1387 * parenthesis such as "myTable( 'foo' )" and the metatable has
1388 * a __call key pointing to a function, that function is invoked
1389 * (passing any specified arguments) and the return value is
1390 * returned.
1391 *
1392 * __metatable - Hide the metatable. When "getmetatable( myTable )" is
1393 * called, if the metatable for myTable has a __metatable
1394 * key, the value of that key is returned instead of the
1395 * actual metatable.
1396 *
1397 * __tostring - Control string representation. When the builtin
1398 * "tostring( myTable )" function is called, if the metatable
1399 * for myTable has a __tostring property set to a function,
1400 * that function is invoked (passing myTable to it) and the
1401 * return value is used as the string representation.
1402 *
1403 * __len - Control table length. When the table length is requested using
1404 * the length operator ( '#' ), if the metatable for myTable has
1405 * a __len key pointing to a function, that function is invoked
1406 * (passing myTable to it) and the return value used as the value
1407 * of "#myTable".
1408 *
1409 * __gc - Userdata finalizer code. When userdata is set to be garbage
1410 * collected, if the metatable has a __gc field pointing to a
1411 * function, that function is first invoked, passing the userdata
1412 * to it. The __gc metamethod is not called for tables.
1413 * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html)
1414 *
1415 * Special metamethods for redefining standard operators:
1416 * http://www.lua.org/pil/13.1.html
1417 *
1418 * __add "+"
1419 * __sub "-"
1420 * __mul "*"
1421 * __div "/"
1422 * __unm "!"
1423 * __pow "^"
1424 * __concat ".."
1425 *
1426 * Special methods for redfining standar relations
1427 * http://www.lua.org/pil/13.2.html
1428 *
1429 * __eq "=="
1430 * __lt "<"
1431 * __le "<="
1432 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001433
1434/*
1435 *
1436 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001437 * Class Map
1438 *
1439 *
1440 */
1441
1442/* Returns a struct hlua_map if the stack entry "ud" is
1443 * a class session, otherwise it throws an error.
1444 */
1445__LJMP static struct map_descriptor *hlua_checkmap(lua_State *L, int ud)
1446{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001447 return MAY_LJMP(hlua_checkudata(L, ud, class_map_ref));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001448}
1449
1450/* This function is the map constructor. It don't need
1451 * the class Map object. It creates and return a new Map
1452 * object. It must be called only during "body" or "init"
1453 * context because it process some filesystem accesses.
1454 */
1455__LJMP static int hlua_map_new(struct lua_State *L)
1456{
1457 const char *fn;
1458 int match = PAT_MATCH_STR;
1459 struct sample_conv conv;
1460 const char *file = "";
1461 int line = 0;
1462 lua_Debug ar;
1463 char *err = NULL;
1464 struct arg args[2];
1465
1466 if (lua_gettop(L) < 1 || lua_gettop(L) > 2)
1467 WILL_LJMP(luaL_error(L, "'new' needs at least 1 argument."));
1468
1469 fn = MAY_LJMP(luaL_checkstring(L, 1));
1470
1471 if (lua_gettop(L) >= 2) {
1472 match = MAY_LJMP(luaL_checkinteger(L, 2));
1473 if (match < 0 || match >= PAT_MATCH_NUM)
1474 WILL_LJMP(luaL_error(L, "'new' needs a valid match method."));
1475 }
1476
1477 /* Get Lua filename and line number. */
1478 if (lua_getstack(L, 1, &ar)) { /* check function at level */
1479 lua_getinfo(L, "Sl", &ar); /* get info about it */
1480 if (ar.currentline > 0) { /* is there info? */
1481 file = ar.short_src;
1482 line = ar.currentline;
1483 }
1484 }
1485
1486 /* fill fake sample_conv struct. */
1487 conv.kw = ""; /* unused. */
1488 conv.process = NULL; /* unused. */
1489 conv.arg_mask = 0; /* unused. */
1490 conv.val_args = NULL; /* unused. */
1491 conv.out_type = SMP_T_STR;
1492 conv.private = (void *)(long)match;
1493 switch (match) {
1494 case PAT_MATCH_STR: conv.in_type = SMP_T_STR; break;
1495 case PAT_MATCH_BEG: conv.in_type = SMP_T_STR; break;
1496 case PAT_MATCH_SUB: conv.in_type = SMP_T_STR; break;
1497 case PAT_MATCH_DIR: conv.in_type = SMP_T_STR; break;
1498 case PAT_MATCH_DOM: conv.in_type = SMP_T_STR; break;
1499 case PAT_MATCH_END: conv.in_type = SMP_T_STR; break;
1500 case PAT_MATCH_REG: conv.in_type = SMP_T_STR; break;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001501 case PAT_MATCH_INT: conv.in_type = SMP_T_SINT; break;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001502 case PAT_MATCH_IP: conv.in_type = SMP_T_ADDR; break;
1503 default:
1504 WILL_LJMP(luaL_error(L, "'new' doesn't support this match mode."));
1505 }
1506
1507 /* fill fake args. */
1508 args[0].type = ARGT_STR;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001509 args[0].data.str.area = (char *)fn;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001510 args[1].type = ARGT_STOP;
1511
1512 /* load the map. */
1513 if (!sample_load_map(args, &conv, file, line, &err)) {
1514 /* error case: we cant use luaL_error because we must
1515 * free the err variable.
1516 */
1517 luaL_where(L, 1);
1518 lua_pushfstring(L, "'new': %s.", err);
1519 lua_concat(L, 2);
1520 free(err);
1521 WILL_LJMP(lua_error(L));
1522 }
1523
1524 /* create the lua object. */
1525 lua_newtable(L);
1526 lua_pushlightuserdata(L, args[0].data.map);
1527 lua_rawseti(L, -2, 0);
1528
1529 /* Pop a class Map metatable and affect it to the userdata. */
1530 lua_rawgeti(L, LUA_REGISTRYINDEX, class_map_ref);
1531 lua_setmetatable(L, -2);
1532
1533
1534 return 1;
1535}
1536
1537__LJMP static inline int _hlua_map_lookup(struct lua_State *L, int str)
1538{
1539 struct map_descriptor *desc;
1540 struct pattern *pat;
1541 struct sample smp;
1542
1543 MAY_LJMP(check_args(L, 2, "lookup"));
1544 desc = MAY_LJMP(hlua_checkmap(L, 1));
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001545 if (desc->pat.expect_type == SMP_T_SINT) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001546 smp.data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001547 smp.data.u.sint = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001548 }
1549 else {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001550 smp.data.type = SMP_T_STR;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001551 smp.flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001552 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 +02001553 }
1554
1555 pat = pattern_exec_match(&desc->pat, &smp, 1);
Thierry FOURNIER503bb092015-08-19 08:35:43 +02001556 if (!pat || !pat->data) {
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001557 if (str)
1558 lua_pushstring(L, "");
1559 else
1560 lua_pushnil(L);
1561 return 1;
1562 }
1563
1564 /* The Lua pattern must return a string, so we can't check the returned type */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001565 lua_pushlstring(L, pat->data->u.str.area, pat->data->u.str.data);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001566 return 1;
1567}
1568
1569__LJMP static int hlua_map_lookup(struct lua_State *L)
1570{
1571 return _hlua_map_lookup(L, 0);
1572}
1573
1574__LJMP static int hlua_map_slookup(struct lua_State *L)
1575{
1576 return _hlua_map_lookup(L, 1);
1577}
1578
1579/*
1580 *
1581 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001582 * Class Socket
1583 *
1584 *
1585 */
1586
1587__LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud)
1588{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001589 return MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001590}
1591
1592/* This function is the handler called for each I/O on the established
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001593 * connection. It is used for notify space available to send or data
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001594 * received.
1595 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001596static void hlua_socket_handler(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001597{
Willy Tarreau00a37f02015-04-13 12:05:19 +02001598 struct stream_interface *si = appctx->owner;
Olivier Houchard9aaf7782017-09-13 18:30:23 +02001599 struct connection *c = cs_conn(objt_cs(si_opposite(si)->end));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001600
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001601 if (appctx->ctx.hlua_cosocket.die) {
1602 si_shutw(si);
1603 si_shutr(si);
1604 si_ic(si)->flags |= CF_READ_NULL;
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001605 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1606 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001607 stream_shutdown(si_strm(si), SF_ERR_KILLED);
1608 }
1609
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001610 /* If the connection object is not available, close all the
1611 * streams and wakeup everything waiting for.
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001612 */
1613 if (!c) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001614 si_shutw(si);
1615 si_shutr(si);
Willy Tarreau2bb4a962014-11-28 11:11:05 +01001616 si_ic(si)->flags |= CF_READ_NULL;
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001617 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1618 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001619 return;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001620 }
1621
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001622 /* If we cant write, wakeup the pending write signals. */
1623 if (channel_output_closed(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001624 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001625
1626 /* If we cant read, wakeup the pending read signals. */
1627 if (channel_input_closed(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001628 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001629
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001630 /* if the connection is not estabkished, inform the stream that we want
1631 * to be notified whenever the connection completes.
1632 */
1633 if (!(c->flags & CO_FL_CONNECTED)) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001634 si_cant_get(si);
Willy Tarreau12c24232018-12-06 15:29:50 +01001635 si_rx_conn_blk(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01001636 si_rx_endp_more(si);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001637 return;
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001638 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001639
1640 /* This function is called after the connect. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001641 appctx->ctx.hlua_cosocket.connected = 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001642
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001643 /* Wake the tasks which wants to write if the buffer have available space. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001644 if (channel_may_recv(si_ic(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001645 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001646
1647 /* Wake the tasks which wants to read if the buffer contains data. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001648 if (!channel_is_empty(si_oc(si)))
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001649 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001650
1651 /* Some data were injected in the buffer, notify the stream
1652 * interface.
1653 */
1654 if (!channel_is_empty(si_ic(si)))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001655 si_update(si);
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001656
1657 /* If write notifications are registered, we considers we want
Willy Tarreau3367d412018-11-15 10:57:41 +01001658 * to write, so we clear the blocking flag.
Thierry FOURNIER101b9762018-05-27 01:27:40 +02001659 */
1660 if (notification_registered(&appctx->ctx.hlua_cosocket.wake_on_write))
Willy Tarreau3367d412018-11-15 10:57:41 +01001661 si_rx_endp_more(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001662}
1663
Willy Tarreau87b09662015-04-03 00:22:06 +02001664/* This function is called when the "struct stream" is destroyed.
1665 * Remove the link from the object to this stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001666 * Wake all the pending signals.
1667 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001668static void hlua_socket_release(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001669{
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001670 struct xref *peer;
1671
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001672 /* Remove my link in the original object. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001673 peer = xref_get_peer_and_lock(&appctx->ctx.hlua_cosocket.xref);
1674 if (peer)
1675 xref_disconnect(&appctx->ctx.hlua_cosocket.xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001676
1677 /* Wake all the task waiting for me. */
Thierry FOURNIERd6975962017-07-12 14:31:10 +02001678 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1679 notification_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001680}
1681
1682/* If the garbage collectio of the object is launch, nobody
Willy Tarreau87b09662015-04-03 00:22:06 +02001683 * uses this object. If the stream does not exists, just quit.
1684 * Send the shutdown signal to the stream. In some cases,
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001685 * pending signal can rest in the read and write lists. destroy
1686 * it.
1687 */
1688__LJMP static int hlua_socket_gc(lua_State *L)
1689{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001690 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001691 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001692 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001693
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001694 MAY_LJMP(check_args(L, 1, "__gc"));
1695
1696 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001697 peer = xref_get_peer_and_lock(&socket->xref);
1698 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001699 return 0;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001700 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001701
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001702 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001703 appctx->ctx.hlua_cosocket.die = 1;
1704 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001705
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001706 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001707 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001708 return 0;
1709}
1710
1711/* The close function send shutdown signal and break the
Willy Tarreau87b09662015-04-03 00:22:06 +02001712 * links between the stream and the object.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001713 */
sada05ed3302018-05-11 11:48:18 -07001714__LJMP static int hlua_socket_close_helper(lua_State *L)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001715{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001716 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001717 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001718 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001719
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001720 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001721
1722 /* Check if we run on the same thread than the xreator thread.
1723 * We cannot access to the socket if the thread is different.
1724 */
1725 if (socket->tid != tid)
1726 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1727
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001728 peer = xref_get_peer_and_lock(&socket->xref);
1729 if (!peer)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001730 return 0;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001731 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001732
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001733 /* Set the flag which destroy the session. */
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02001734 appctx->ctx.hlua_cosocket.die = 1;
1735 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001736
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001737 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001738 xref_disconnect(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001739 return 0;
1740}
1741
sada05ed3302018-05-11 11:48:18 -07001742/* The close function calls close_helper.
1743 */
1744__LJMP static int hlua_socket_close(lua_State *L)
1745{
1746 MAY_LJMP(check_args(L, 1, "close"));
1747 return hlua_socket_close_helper(L);
1748}
1749
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001750/* This Lua function assumes that the stack contain three parameters.
1751 * 1 - USERDATA containing a struct socket
1752 * 2 - INTEGER with values of the macro defined below
1753 * If the integer is -1, we must read at most one line.
1754 * If the integer is -2, we ust read all the data until the
1755 * end of the stream.
1756 * If the integer is positive value, we must read a number of
1757 * bytes corresponding to this value.
1758 */
1759#define HLSR_READ_LINE (-1)
1760#define HLSR_READ_ALL (-2)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001761__LJMP static int hlua_socket_receive_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001762{
1763 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
1764 int wanted = lua_tointeger(L, 2);
1765 struct hlua *hlua = hlua_gethlua(L);
1766 struct appctx *appctx;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001767 size_t len;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001768 int nblk;
Willy Tarreau206ba832018-06-14 15:27:31 +02001769 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001770 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02001771 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02001772 size_t len2;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001773 int skip_at_end = 0;
Willy Tarreau81389672015-03-10 12:03:52 +01001774 struct channel *oc;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001775 struct stream_interface *si;
1776 struct stream *s;
1777 struct xref *peer;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001778 int missing_bytes;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001779
1780 /* Check if this lua stack is schedulable. */
1781 if (!hlua || !hlua->task)
1782 WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in "
1783 "'frontend', 'backend' or 'task'"));
1784
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001785 /* Check if we run on the same thread than the xreator thread.
1786 * We cannot access to the socket if the thread is different.
1787 */
1788 if (socket->tid != tid)
1789 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1790
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001791 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001792 peer = xref_get_peer_and_lock(&socket->xref);
1793 if (!peer)
1794 goto no_peer;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001795 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
1796 si = appctx->owner;
1797 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001798
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02001799 oc = &s->res;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001800 if (wanted == HLSR_READ_LINE) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001801 /* Read line. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001802 nblk = co_getline_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001803 if (nblk < 0) /* Connection close. */
1804 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001805 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001806 goto connection_empty;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001807
1808 /* remove final \r\n. */
1809 if (nblk == 1) {
1810 if (blk1[len1-1] == '\n') {
1811 len1--;
1812 skip_at_end++;
1813 if (blk1[len1-1] == '\r') {
1814 len1--;
1815 skip_at_end++;
1816 }
1817 }
1818 }
1819 else {
1820 if (blk2[len2-1] == '\n') {
1821 len2--;
1822 skip_at_end++;
1823 if (blk2[len2-1] == '\r') {
1824 len2--;
1825 skip_at_end++;
1826 }
1827 }
1828 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001829 }
1830
1831 else if (wanted == HLSR_READ_ALL) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001832 /* Read all the available data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001833 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001834 if (nblk < 0) /* Connection close. */
1835 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001836 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001837 goto connection_empty;
1838 }
1839
1840 else {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001841 /* Read a block of data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001842 nblk = co_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001843 if (nblk < 0) /* Connection close. */
1844 goto connection_closed;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08001845 if (nblk == 0) /* No data available. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001846 goto connection_empty;
1847
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001848 missing_bytes = wanted - socket->b.n;
1849 if (len1 > missing_bytes) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001850 nblk = 1;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001851 len1 = missing_bytes;
1852 } if (nblk == 2 && len1 + len2 > missing_bytes)
1853 len2 = missing_bytes - len1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001854 }
1855
1856 len = len1;
1857
1858 luaL_addlstring(&socket->b, blk1, len1);
1859 if (nblk == 2) {
1860 len += len2;
1861 luaL_addlstring(&socket->b, blk2, len2);
1862 }
1863
1864 /* Consume data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02001865 co_skip(oc, len + skip_at_end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001866
1867 /* Don't wait anything. */
Thierry FOURNIER7e4ee472018-05-25 15:03:50 +02001868 appctx_wakeup(appctx);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001869
1870 /* If the pattern reclaim to read all the data
1871 * in the connection, got out.
1872 */
1873 if (wanted == HLSR_READ_ALL)
1874 goto connection_empty;
Thierry FOURNIER8c126c72018-05-25 16:27:44 +02001875 else if (wanted >= 0 && socket->b.n < wanted)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001876 goto connection_empty;
1877
1878 /* Return result. */
1879 luaL_pushresult(&socket->b);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001880 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001881 return 1;
1882
1883connection_closed:
1884
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001885 xref_unlock(&socket->xref, peer);
1886
1887no_peer:
1888
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001889 /* If the buffer containds data. */
1890 if (socket->b.n > 0) {
1891 luaL_pushresult(&socket->b);
1892 return 1;
1893 }
1894 lua_pushnil(L);
1895 lua_pushstring(L, "connection closed.");
1896 return 2;
1897
1898connection_empty:
1899
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001900 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_read, hlua->task)) {
1901 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001902 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02001903 }
1904 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02001905 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_receive_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001906 return 0;
1907}
1908
Tim Duesterhusb33754c2018-01-04 19:32:14 +01001909/* This Lua function gets two parameters. The first one can be string
1910 * or a number. If the string is "*l", the user requires one line. If
1911 * the string is "*a", the user requires all the contents of the stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001912 * If the value is a number, the user require a number of bytes equal
1913 * to the value. The default value is "*l" (a line).
1914 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01001915 * This parameter with a variable type is converted in integer. This
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001916 * integer takes this values:
1917 * -1 : read a line
1918 * -2 : read all the stream
Tim Duesterhusb33754c2018-01-04 19:32:14 +01001919 * >0 : amount of bytes.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001920 *
Tim Duesterhusb33754c2018-01-04 19:32:14 +01001921 * The second parameter is optional. It contains a string that must be
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001922 * concatenated with the read data.
1923 */
1924__LJMP static int hlua_socket_receive(struct lua_State *L)
1925{
1926 int wanted = HLSR_READ_LINE;
1927 const char *pattern;
1928 int type;
1929 char *error;
1930 size_t len;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001931 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001932
1933 if (lua_gettop(L) < 1 || lua_gettop(L) > 3)
1934 WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments."));
1935
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001936 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001937
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02001938 /* Check if we run on the same thread than the xreator thread.
1939 * We cannot access to the socket if the thread is different.
1940 */
1941 if (socket->tid != tid)
1942 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
1943
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001944 /* check for pattern. */
1945 if (lua_gettop(L) >= 2) {
1946 type = lua_type(L, 2);
1947 if (type == LUA_TSTRING) {
1948 pattern = lua_tostring(L, 2);
1949 if (strcmp(pattern, "*a") == 0)
1950 wanted = HLSR_READ_ALL;
1951 else if (strcmp(pattern, "*l") == 0)
1952 wanted = HLSR_READ_LINE;
1953 else {
1954 wanted = strtoll(pattern, &error, 10);
1955 if (*error != '\0')
1956 WILL_LJMP(luaL_error(L, "Unsupported pattern."));
1957 }
1958 }
1959 else if (type == LUA_TNUMBER) {
1960 wanted = lua_tointeger(L, 2);
1961 if (wanted < 0)
1962 WILL_LJMP(luaL_error(L, "Unsupported size."));
1963 }
1964 }
1965
1966 /* Set pattern. */
1967 lua_pushinteger(L, wanted);
Tim Duesterhusc6e377e2018-01-04 19:32:13 +01001968
1969 /* Check if we would replace the top by itself. */
1970 if (lua_gettop(L) != 2)
1971 lua_replace(L, 2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001972
Tim Duesterhusb33754c2018-01-04 19:32:14 +01001973 /* init buffer, and fill it with prefix. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001974 luaL_buffinit(L, &socket->b);
1975
1976 /* Check prefix. */
1977 if (lua_gettop(L) >= 3) {
1978 if (lua_type(L, 3) != LUA_TSTRING)
1979 WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix"));
1980 pattern = lua_tolstring(L, 3, &len);
1981 luaL_addlstring(&socket->b, pattern, len);
1982 }
1983
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001984 return __LJMP(hlua_socket_receive_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001985}
1986
1987/* Write the Lua input string in the output buffer.
Mark Lakes22154b42018-01-29 14:38:40 -08001988 * This function returns a yield if no space is available.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001989 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001990static int hlua_socket_write_yield(struct lua_State *L,int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001991{
1992 struct hlua_socket *socket;
1993 struct hlua *hlua = hlua_gethlua(L);
1994 struct appctx *appctx;
1995 size_t buf_len;
1996 const char *buf;
1997 int len;
1998 int send_len;
1999 int sent;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002000 struct xref *peer;
2001 struct stream_interface *si;
2002 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002003
2004 /* Check if this lua stack is schedulable. */
2005 if (!hlua || !hlua->task)
2006 WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in "
2007 "'frontend', 'backend' or 'task'"));
2008
2009 /* Get object */
2010 socket = MAY_LJMP(hlua_checksocket(L, 1));
2011 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002012 sent = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002013
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002014 /* Check if we run on the same thread than the xreator thread.
2015 * We cannot access to the socket if the thread is different.
2016 */
2017 if (socket->tid != tid)
2018 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2019
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002020 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002021 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002022 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002023 lua_pushinteger(L, -1);
2024 return 1;
2025 }
2026 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2027 si = appctx->owner;
2028 s = si_strm(si);
2029
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002030 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002031 if (channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002032 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002033 lua_pushinteger(L, -1);
2034 return 1;
2035 }
2036
2037 /* Update the input buffer data. */
2038 buf += sent;
2039 send_len = buf_len - sent;
2040
2041 /* All the data are sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002042 if (sent >= buf_len) {
2043 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002044 return 1; /* Implicitly return the length sent. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002045 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002046
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002047 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002048 * the request buffer if its not required.
2049 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002050 if (s->req.buf.size == 0) {
Willy Tarreau581abd32018-10-25 10:21:41 +02002051 if (!si_alloc_ibuf(si, &appctx->buffer_wait))
Christopher Faulet33834b12016-12-19 09:29:06 +01002052 goto hlua_socket_write_yield_return;
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01002053 }
2054
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002055 /* Check for available space. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002056 len = b_room(&s->req.buf);
Christopher Faulet33834b12016-12-19 09:29:06 +01002057 if (len <= 0) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002058 goto hlua_socket_write_yield_return;
Christopher Faulet33834b12016-12-19 09:29:06 +01002059 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002060
2061 /* send data */
2062 if (len < send_len)
2063 send_len = len;
Thierry FOURNIER66b89192018-05-27 01:14:47 +02002064 len = ci_putblk(&s->req, buf, send_len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002065
2066 /* "Not enough space" (-1), "Buffer too little to contain
2067 * the data" (-2) are not expected because the available length
2068 * is tested.
2069 * Other unknown error are also not expected.
2070 */
2071 if (len <= 0) {
Willy Tarreaubc18da12015-03-13 14:00:47 +01002072 if (len == -1)
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002073 s->req.flags |= CF_WAKE_WRITE;
Willy Tarreaubc18da12015-03-13 14:00:47 +01002074
sada05ed3302018-05-11 11:48:18 -07002075 MAY_LJMP(hlua_socket_close_helper(L));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002076 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002077 lua_pushinteger(L, -1);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002078 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002079 return 1;
2080 }
2081
2082 /* update buffers. */
Thierry FOURNIER101b9762018-05-27 01:27:40 +02002083 appctx_wakeup(appctx);
Willy Tarreaude70fa12015-09-26 11:25:05 +02002084
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002085 s->req.rex = TICK_ETERNITY;
2086 s->res.wex = TICK_ETERNITY;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002087
2088 /* Update length sent. */
2089 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002090 lua_pushinteger(L, sent + len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002091
2092 /* All the data buffer is sent ? */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002093 if (sent + len >= buf_len) {
2094 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002095 return 1;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002096 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002097
2098hlua_socket_write_yield_return:
Thierry FOURNIERba42fcd2018-05-27 00:59:48 +02002099 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2100 xref_unlock(&socket->xref, peer);
2101 WILL_LJMP(luaL_error(L, "out of memory"));
2102 }
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002103 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002104 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_write_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002105 return 0;
2106}
2107
2108/* This function initiate the send of data. It just check the input
2109 * parameters and push an integer in the Lua stack that contain the
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002110 * amount of data written to the buffer. This is used by the function
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002111 * "hlua_socket_write_yield" that can yield.
2112 *
2113 * The Lua function gets between 3 and 4 parameters. The first one is
2114 * the associated object. The second is a string buffer. The third is
2115 * a facultative integer that represents where is the buffer position
2116 * of the start of the data that can send. The first byte is the
2117 * position "1". The default value is "1". The fourth argument is a
2118 * facultative integer that represents where is the buffer position
2119 * of the end of the data that can send. The default is the last byte.
2120 */
2121static int hlua_socket_send(struct lua_State *L)
2122{
2123 int i;
2124 int j;
2125 const char *buf;
2126 size_t buf_len;
2127
2128 /* Check number of arguments. */
2129 if (lua_gettop(L) < 2 || lua_gettop(L) > 4)
2130 WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments"));
2131
2132 /* Get the string. */
2133 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
2134
2135 /* Get and check j. */
2136 if (lua_gettop(L) == 4) {
2137 j = MAY_LJMP(luaL_checkinteger(L, 4));
2138 if (j < 0)
2139 j = buf_len + j + 1;
2140 if (j > buf_len)
2141 j = buf_len + 1;
2142 lua_pop(L, 1);
2143 }
2144 else
2145 j = buf_len;
2146
2147 /* Get and check i. */
2148 if (lua_gettop(L) == 3) {
2149 i = MAY_LJMP(luaL_checkinteger(L, 3));
2150 if (i < 0)
2151 i = buf_len + i + 1;
2152 if (i > buf_len)
2153 i = buf_len + 1;
2154 lua_pop(L, 1);
2155 } else
2156 i = 1;
2157
2158 /* Check bth i and j. */
2159 if (i > j) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002160 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002161 return 1;
2162 }
2163 if (i == 0 && j == 0) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002164 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002165 return 1;
2166 }
2167 if (i == 0)
2168 i = 1;
2169 if (j == 0)
2170 j = 1;
2171
2172 /* Pop the string. */
2173 lua_pop(L, 1);
2174
2175 /* Update the buffer length. */
2176 buf += i - 1;
2177 buf_len = j - i + 1;
2178 lua_pushlstring(L, buf, buf_len);
2179
2180 /* This unsigned is used to remember the amount of sent data. */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002181 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002182
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002183 return MAY_LJMP(hlua_socket_write_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002184}
2185
Willy Tarreau22b0a682015-06-17 19:43:49 +02002186#define SOCKET_INFO_MAX_LEN sizeof("[0000:0000:0000:0000:0000:0000:0000:0000]:12345")
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002187__LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr)
2188{
2189 static char buffer[SOCKET_INFO_MAX_LEN];
2190 int ret;
2191 int len;
2192 char *p;
2193
2194 ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1);
2195 if (ret <= 0) {
2196 lua_pushnil(L);
2197 return 1;
2198 }
2199
2200 if (ret == AF_UNIX) {
2201 lua_pushstring(L, buffer+1);
2202 return 1;
2203 }
2204 else if (ret == AF_INET6) {
2205 buffer[0] = '[';
2206 len = strlen(buffer);
2207 buffer[len] = ']';
2208 len++;
2209 buffer[len] = ':';
2210 len++;
2211 p = buffer;
2212 }
2213 else if (ret == AF_INET) {
2214 p = buffer + 1;
2215 len = strlen(p);
2216 p[len] = ':';
2217 len++;
2218 }
2219 else {
2220 lua_pushnil(L);
2221 return 1;
2222 }
2223
2224 if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) {
2225 lua_pushnil(L);
2226 return 1;
2227 }
2228
2229 lua_pushstring(L, p);
2230 return 1;
2231}
2232
2233/* Returns information about the peer of the connection. */
2234__LJMP static int hlua_socket_getpeername(struct lua_State *L)
2235{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002236 struct hlua_socket *socket;
2237 struct connection *conn;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002238 struct xref *peer;
2239 struct appctx *appctx;
2240 struct stream_interface *si;
2241 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002242 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002243
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002244 MAY_LJMP(check_args(L, 1, "getpeername"));
2245
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002246 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002247
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002248 /* Check if we run on the same thread than the xreator thread.
2249 * We cannot access to the socket if the thread is different.
2250 */
2251 if (socket->tid != tid)
2252 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2253
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002254 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002255 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002256 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002257 lua_pushnil(L);
2258 return 1;
2259 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002260 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2261 si = appctx->owner;
2262 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002263
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002264 conn = cs_conn(objt_cs(s->si[1].end));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002265 if (!conn) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002266 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002267 lua_pushnil(L);
2268 return 1;
2269 }
2270
Willy Tarreaua71f6422016-11-16 17:00:14 +01002271 conn_get_to_addr(conn);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002272 if (!(conn->flags & CO_FL_ADDR_TO_SET)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002273 xref_unlock(&socket->xref, peer);
Willy Tarreaua71f6422016-11-16 17:00:14 +01002274 lua_pushnil(L);
2275 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002276 }
2277
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002278 ret = MAY_LJMP(hlua_socket_info(L, &conn->addr.to));
2279 xref_unlock(&socket->xref, peer);
2280 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002281}
2282
2283/* Returns information about my connection side. */
2284static int hlua_socket_getsockname(struct lua_State *L)
2285{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002286 struct hlua_socket *socket;
2287 struct connection *conn;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002288 struct appctx *appctx;
2289 struct xref *peer;
2290 struct stream_interface *si;
2291 struct stream *s;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002292 int ret;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002293
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002294 MAY_LJMP(check_args(L, 1, "getsockname"));
2295
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002296 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002297
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002298 /* Check if we run on the same thread than the xreator thread.
2299 * We cannot access to the socket if the thread is different.
2300 */
2301 if (socket->tid != tid)
2302 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2303
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002304 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002305 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002306 if (!peer) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002307 lua_pushnil(L);
2308 return 1;
2309 }
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002310 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2311 si = appctx->owner;
2312 s = si_strm(si);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002313
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002314 conn = cs_conn(objt_cs(s->si[1].end));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002315 if (!conn) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002316 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002317 lua_pushnil(L);
2318 return 1;
2319 }
2320
Willy Tarreaua71f6422016-11-16 17:00:14 +01002321 conn_get_from_addr(conn);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002322 if (!(conn->flags & CO_FL_ADDR_FROM_SET)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002323 xref_unlock(&socket->xref, peer);
Willy Tarreaua71f6422016-11-16 17:00:14 +01002324 lua_pushnil(L);
2325 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002326 }
2327
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002328 ret = hlua_socket_info(L, &conn->addr.from);
2329 xref_unlock(&socket->xref, peer);
2330 return ret;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002331}
2332
2333/* This struct define the applet. */
Willy Tarreau30576452015-04-13 13:50:30 +02002334static struct applet update_applet = {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002335 .obj_type = OBJ_TYPE_APPLET,
2336 .name = "<LUA_TCP>",
2337 .fct = hlua_socket_handler,
2338 .release = hlua_socket_release,
2339};
2340
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002341__LJMP static int hlua_socket_connect_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002342{
2343 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
2344 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002345 struct xref *peer;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002346 struct appctx *appctx;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002347 struct stream_interface *si;
2348 struct stream *s;
2349
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002350 /* Check if we run on the same thread than the xreator thread.
2351 * We cannot access to the socket if the thread is different.
2352 */
2353 if (socket->tid != tid)
2354 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2355
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002356 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002357 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002358 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002359 lua_pushnil(L);
2360 lua_pushstring(L, "Can't connect");
2361 return 2;
2362 }
2363 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
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002367 /* Check if we run on the same thread than the xreator thread.
2368 * We cannot access to the socket if the thread is different.
2369 */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002370 if (socket->tid != tid) {
2371 xref_unlock(&socket->xref, peer);
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002372 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002373 }
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002374
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002375 /* Check for connection close. */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002376 if (!hlua || channel_output_closed(&s->req)) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002377 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002378 lua_pushnil(L);
2379 lua_pushstring(L, "Can't connect");
2380 return 2;
2381 }
2382
Willy Tarreaue09101e2018-10-16 17:37:12 +02002383 appctx = __objt_appctx(s->si[0].end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002384
2385 /* Check for connection established. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002386 if (appctx->ctx.hlua_cosocket.connected) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002387 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002388 lua_pushinteger(L, 1);
2389 return 1;
2390 }
2391
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002392 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2393 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002394 WILL_LJMP(luaL_error(L, "out of memory error"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002395 }
2396 xref_unlock(&socket->xref, peer);
Willy Tarreau9635e032018-10-16 17:52:55 +02002397 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002398 return 0;
2399}
2400
2401/* This function fail or initite the connection. */
2402__LJMP static int hlua_socket_connect(struct lua_State *L)
2403{
2404 struct hlua_socket *socket;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002405 int port = -1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002406 const char *ip;
2407 struct connection *conn;
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002408 struct hlua *hlua;
2409 struct appctx *appctx;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002410 int low, high;
2411 struct sockaddr_storage *addr;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002412 struct xref *peer;
2413 struct stream_interface *si;
2414 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002415
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002416 if (lua_gettop(L) < 2)
2417 WILL_LJMP(luaL_error(L, "connect: need at least 2 arguments"));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002418
2419 /* Get args. */
2420 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002421
2422 /* Check if we run on the same thread than the xreator thread.
2423 * We cannot access to the socket if the thread is different.
2424 */
2425 if (socket->tid != tid)
2426 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2427
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002428 ip = MAY_LJMP(luaL_checkstring(L, 2));
Tim Duesterhus6edab862018-01-06 19:04:45 +01002429 if (lua_gettop(L) >= 3) {
2430 luaL_Buffer b;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002431 port = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002432
Tim Duesterhus6edab862018-01-06 19:04:45 +01002433 /* Force the ip to end with a colon, to support IPv6 addresses
2434 * that are not enclosed within square brackets.
2435 */
2436 if (port > 0) {
2437 luaL_buffinit(L, &b);
2438 luaL_addstring(&b, ip);
2439 luaL_addchar(&b, ':');
2440 luaL_pushresult(&b);
2441 ip = lua_tolstring(L, lua_gettop(L), NULL);
2442 }
2443 }
2444
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002445 /* check for connection break. If some data where read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002446 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002447 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002448 lua_pushnil(L);
2449 return 1;
2450 }
2451 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2452 si = appctx->owner;
2453 s = si_strm(si);
2454
2455 /* Initialise connection. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002456 conn = cs_conn(si_alloc_cs(&s->si[1], NULL));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002457 if (!conn) {
2458 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002459 WILL_LJMP(luaL_error(L, "connect: internal error"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002460 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002461
Willy Tarreau3adac082015-09-26 17:51:09 +02002462 /* needed for the connection not to be closed */
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002463 conn->target = s->target;
Willy Tarreau3adac082015-09-26 17:51:09 +02002464
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002465 /* Parse ip address. */
Willy Tarreau48ef4c92017-01-06 18:32:38 +01002466 addr = str2sa_range(ip, NULL, &low, &high, NULL, NULL, NULL, 0);
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002467 if (!addr) {
2468 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002469 WILL_LJMP(luaL_error(L, "connect: cannot parse destination address '%s'", ip));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002470 }
2471 if (low != high) {
2472 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002473 WILL_LJMP(luaL_error(L, "connect: port ranges not supported : address '%s'", ip));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002474 }
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002475 memcpy(&conn->addr.to, addr, sizeof(struct sockaddr_storage));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002476
2477 /* Set port. */
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002478 if (low == 0) {
2479 if (conn->addr.to.ss_family == AF_INET) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002480 if (port == -1) {
2481 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002482 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002483 }
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002484 ((struct sockaddr_in *)&conn->addr.to)->sin_port = htons(port);
2485 } else if (conn->addr.to.ss_family == AF_INET6) {
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002486 if (port == -1) {
2487 xref_unlock(&socket->xref, peer);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002488 WILL_LJMP(luaL_error(L, "connect: port missing"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002489 }
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002490 ((struct sockaddr_in6 *)&conn->addr.to)->sin6_port = htons(port);
2491 }
2492 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002493
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002494 hlua = hlua_gethlua(L);
Willy Tarreaue09101e2018-10-16 17:37:12 +02002495 appctx = __objt_appctx(s->si[0].end);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002496
2497 /* inform the stream that we want to be notified whenever the
2498 * connection completes.
2499 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01002500 si_cant_get(&s->si[0]);
Willy Tarreau3367d412018-11-15 10:57:41 +01002501 si_rx_endp_more(&s->si[0]);
Thierry FOURNIER8c8fbbe2015-09-26 17:02:35 +02002502 appctx_wakeup(appctx);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002503
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02002504 hlua->flags |= HLUA_MUST_GC;
2505
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002506 if (!notification_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task)) {
2507 xref_unlock(&socket->xref, peer);
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002508 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002509 }
2510 xref_unlock(&socket->xref, peer);
PiBa-NL706d5ee2018-05-05 23:51:42 +02002511
2512 task_wakeup(s->task, TASK_WOKEN_INIT);
2513 /* Return yield waiting for connection. */
2514
Willy Tarreau9635e032018-10-16 17:52:55 +02002515 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002516
2517 return 0;
2518}
2519
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002520#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002521__LJMP static int hlua_socket_connect_ssl(struct lua_State *L)
2522{
2523 struct hlua_socket *socket;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002524 struct xref *peer;
2525 struct appctx *appctx;
2526 struct stream_interface *si;
2527 struct stream *s;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002528
2529 MAY_LJMP(check_args(L, 3, "connect_ssl"));
2530 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002531
2532 /* 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 }
2538 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2539 si = appctx->owner;
2540 s = si_strm(si);
2541
2542 s->target = &socket_ssl.obj_type;
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002543 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002544 return MAY_LJMP(hlua_socket_connect(L));
2545}
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002546#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002547
2548__LJMP static int hlua_socket_setoption(struct lua_State *L)
2549{
2550 return 0;
2551}
2552
2553__LJMP static int hlua_socket_settimeout(struct lua_State *L)
2554{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002555 struct hlua_socket *socket;
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002556 int tmout;
Mark Lakes56cc1252018-03-27 09:48:06 +02002557 double dtmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002558 struct xref *peer;
2559 struct appctx *appctx;
2560 struct stream_interface *si;
2561 struct stream *s;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002562
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002563 MAY_LJMP(check_args(L, 2, "settimeout"));
2564
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002565 socket = MAY_LJMP(hlua_checksocket(L, 1));
Mark Lakes56cc1252018-03-27 09:48:06 +02002566
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002567 /* convert the timeout to millis */
2568 dtmout = MAY_LJMP(luaL_checknumber(L, 2)) * 1000;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002569
Thierry Fournier17a921b2018-03-08 09:59:02 +01002570 /* Check for negative values */
Mark Lakes56cc1252018-03-27 09:48:06 +02002571 if (dtmout < 0)
Thierry Fournier17a921b2018-03-08 09:59:02 +01002572 WILL_LJMP(luaL_error(L, "settimeout: cannot set negatives values"));
2573
Mark Lakes56cc1252018-03-27 09:48:06 +02002574 if (dtmout > INT_MAX) /* overflow check */
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002575 WILL_LJMP(luaL_error(L, "settimeout: cannot set values larger than %d ms", INT_MAX));
Mark Lakes56cc1252018-03-27 09:48:06 +02002576
2577 tmout = MS_TO_TICKS((int)dtmout);
Cyril Bonté7ee465f2018-08-19 22:08:50 +02002578 if (tmout == 0)
2579 tmout++; /* very small timeouts are adjusted to a minium of 1ms */
Mark Lakes56cc1252018-03-27 09:48:06 +02002580
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002581 /* Check if we run on the same thread than the xreator thread.
2582 * We cannot access to the socket if the thread is different.
2583 */
2584 if (socket->tid != tid)
2585 WILL_LJMP(luaL_error(L, "connect: cannot use socket on other thread"));
2586
Mark Lakes56cc1252018-03-27 09:48:06 +02002587 /* check for connection break. If some data were read, return it. */
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002588 peer = xref_get_peer_and_lock(&socket->xref);
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002589 if (!peer) {
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002590 hlua_pusherror(L, "socket: not yet initialised, you can't set timeouts.");
2591 WILL_LJMP(lua_error(L));
2592 return 0;
2593 }
2594 appctx = container_of(peer, struct appctx, ctx.hlua_cosocket.xref);
2595 si = appctx->owner;
2596 s = si_strm(si);
2597
Cyril Bonté7bb63452018-08-17 23:51:02 +02002598 s->sess->fe->timeout.connect = tmout;
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002599 s->req.rto = tmout;
2600 s->req.wto = tmout;
2601 s->res.rto = tmout;
2602 s->res.wto = tmout;
Cyril Bonté7bb63452018-08-17 23:51:02 +02002603 s->req.rex = tick_add_ifset(now_ms, tmout);
2604 s->req.wex = tick_add_ifset(now_ms, tmout);
2605 s->res.rex = tick_add_ifset(now_ms, tmout);
2606 s->res.wex = tick_add_ifset(now_ms, tmout);
2607
2608 s->task->expire = tick_add_ifset(now_ms, tmout);
2609 task_queue(s->task);
2610
Thierry FOURNIER952939d2017-09-01 14:17:32 +02002611 xref_unlock(&socket->xref, peer);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002612
Thierry Fourniere9636f12018-03-08 09:54:32 +01002613 lua_pushinteger(L, 1);
Tim Duesterhus119a5f12018-01-06 19:16:25 +01002614 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002615}
2616
2617__LJMP static int hlua_socket_new(lua_State *L)
2618{
2619 struct hlua_socket *socket;
2620 struct appctx *appctx;
Willy Tarreau15b5e142015-04-04 14:38:25 +02002621 struct session *sess;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002622 struct stream *strm;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002623
2624 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002625 if (!lua_checkstack(L, 3)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002626 hlua_pusherror(L, "socket: full stack");
2627 goto out_fail_conf;
2628 }
2629
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002630 /* Create the object: obj[0] = userdata. */
2631 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002632 socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket)));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002633 lua_rawseti(L, -2, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002634 memset(socket, 0, sizeof(*socket));
Thierry FOURNIER94a6bfc2017-07-12 12:10:44 +02002635 socket->tid = tid;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002636
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002637 /* Check if the various memory pools are intialized. */
Willy Tarreaubafbe012017-11-24 17:34:44 +01002638 if (!pool_head_stream || !pool_head_buffer) {
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002639 hlua_pusherror(L, "socket: uninitialized pools.");
2640 goto out_fail_conf;
2641 }
2642
Willy Tarreau87b09662015-04-03 00:22:06 +02002643 /* Pop a class stream metatable and affect it to the userdata. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002644 lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref);
2645 lua_setmetatable(L, -2);
2646
Willy Tarreaud420a972015-04-06 00:39:18 +02002647 /* Create the applet context */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01002648 appctx = appctx_new(&update_applet, tid_bit);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002649 if (!appctx) {
2650 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaufeb76402015-04-03 14:10:06 +02002651 goto out_fail_conf;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002652 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002653
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002654 appctx->ctx.hlua_cosocket.connected = 0;
Thierry FOURNIERb13b20a2017-07-16 20:48:54 +02002655 appctx->ctx.hlua_cosocket.die = 0;
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002656 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_write);
2657 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_read);
Willy Tarreaub2bf8332015-04-04 15:58:58 +02002658
Willy Tarreaud420a972015-04-06 00:39:18 +02002659 /* Now create a session, task and stream for this applet */
2660 sess = session_new(&socket_proxy, NULL, &appctx->obj_type);
2661 if (!sess) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002662 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002663 goto out_fail_sess;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002664 }
2665
Willy Tarreau87787ac2017-08-28 16:22:54 +02002666 strm = stream_new(sess, &appctx->obj_type);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002667 if (!strm) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002668 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002669 goto out_fail_stream;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002670 }
2671
Thierry FOURNIER2da788e2017-09-11 18:37:23 +02002672 /* Initialise cross reference between stream and Lua socket object. */
2673 xref_create(&socket->xref, &appctx->ctx.hlua_cosocket.xref);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002674
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002675 /* Configure "right" stream interface. this "si" is used to connect
2676 * and retrieve data from the server. The connection is initialized
2677 * with the "struct server".
2678 */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002679 si_set_state(&strm->si[1], SI_ST_ASS);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002680
2681 /* Force destination server. */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002682 strm->flags |= SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET | SF_BE_ASSIGNED;
2683 strm->target = &socket_tcp.obj_type;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002684
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002685 return 1;
2686
Willy Tarreaud420a972015-04-06 00:39:18 +02002687 out_fail_stream:
Willy Tarreau11c36242015-04-04 15:54:03 +02002688 session_free(sess);
Willy Tarreaud420a972015-04-06 00:39:18 +02002689 out_fail_sess:
2690 appctx_free(appctx);
2691 out_fail_conf:
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002692 WILL_LJMP(lua_error(L));
2693 return 0;
2694}
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01002695
2696/*
2697 *
2698 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002699 * Class Channel
2700 *
2701 *
2702 */
2703
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002704/* This function is called before the Lua execution. It stores
2705 * the differents parsers state before executing some Lua code.
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002706 */
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002707static inline void consistency_set(struct stream *stream, int opt, struct hlua_consistency *c)
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002708{
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002709 c->mode = stream->be->mode;
2710 switch (c->mode) {
2711 case PR_MODE_HTTP:
2712 c->data.http.dir = opt & SMP_OPT_DIR;
2713 if (c->data.http.dir == SMP_OPT_DIR_REQ)
2714 c->data.http.state = stream->txn->req.msg_state;
2715 else
2716 c->data.http.state = stream->txn->rsp.msg_state;
2717 break;
2718 default:
2719 break;
2720 }
2721}
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002722
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002723/* This function is called after the Lua execution. it
2724 * returns true if the parser state is consistent, otherwise,
2725 * it return false.
2726 *
2727 * In HTTP mode, the parser state must be in the same state
2728 * or greater when we exit the function. Even if we do a
2729 * control yield. This prevent to break the HTTP message
2730 * from the Lua code.
2731 */
2732static inline int consistency_check(struct stream *stream, int opt, struct hlua_consistency *c)
2733{
2734 if (c->mode != stream->be->mode)
2735 return 0;
2736
2737 switch (c->mode) {
2738 case PR_MODE_HTTP:
2739 if (c->data.http.dir != (opt & SMP_OPT_DIR))
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002740 return 0;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002741 if (c->data.http.dir == SMP_OPT_DIR_REQ)
2742 return stream->txn->req.msg_state >= c->data.http.state;
2743 else
2744 return stream->txn->rsp.msg_state >= c->data.http.state;
2745 default:
2746 return 1;
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002747 }
2748 return 1;
2749}
2750
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002751/* Returns the struct hlua_channel join to the class channel in the
2752 * stack entry "ud" or throws an argument error.
2753 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002754__LJMP static struct channel *hlua_checkchannel(lua_State *L, int ud)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002755{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002756 return MAY_LJMP(hlua_checkudata(L, ud, class_channel_ref));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002757}
2758
Willy Tarreau47860ed2015-03-10 14:07:50 +01002759/* Pushes the channel onto the top of the stack. If the stask does not have a
2760 * free slots, the function fails and returns 0;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002761 */
Willy Tarreau2a71af42015-03-10 13:51:50 +01002762static int hlua_channel_new(lua_State *L, struct channel *channel)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002763{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002764 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002765 if (!lua_checkstack(L, 3))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002766 return 0;
2767
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002768 lua_newtable(L);
Willy Tarreau47860ed2015-03-10 14:07:50 +01002769 lua_pushlightuserdata(L, channel);
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002770 lua_rawseti(L, -2, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002771
2772 /* Pop a class sesison metatable and affect it to the userdata. */
2773 lua_rawgeti(L, LUA_REGISTRYINDEX, class_channel_ref);
2774 lua_setmetatable(L, -2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002775 return 1;
2776}
2777
2778/* Duplicate all the data present in the input channel and put it
2779 * in a string LUA variables. Returns -1 and push a nil value in
2780 * the stack if the channel is closed and all the data are consumed,
2781 * returns 0 if no data are available, otherwise it returns the length
2782 * of the builded string.
2783 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002784static inline int _hlua_channel_dup(struct channel *chn, lua_State *L)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002785{
2786 char *blk1;
2787 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002788 size_t len1;
2789 size_t len2;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002790 int ret;
2791 luaL_Buffer b;
2792
Willy Tarreau06d80a92017-10-19 14:32:15 +02002793 ret = ci_getblk_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002794 if (unlikely(ret == 0))
2795 return 0;
2796
2797 if (unlikely(ret < 0)) {
2798 lua_pushnil(L);
2799 return -1;
2800 }
2801
2802 luaL_buffinit(L, &b);
2803 luaL_addlstring(&b, blk1, len1);
2804 if (unlikely(ret == 2))
2805 luaL_addlstring(&b, blk2, len2);
2806 luaL_pushresult(&b);
2807
2808 if (unlikely(ret == 2))
2809 return len1 + len2;
2810 return len1;
2811}
2812
2813/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2814 * a yield. This function keep the data in the buffer.
2815 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002816__LJMP static int hlua_channel_dup_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002817{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002818 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002819
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002820 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2821
Christopher Faulet3f829a42018-12-13 21:56:45 +01002822 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
2823 WILL_LJMP(lua_error(L));
2824
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002825 if (_hlua_channel_dup(chn, L) == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002826 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_dup_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002827 return 1;
2828}
2829
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002830/* Check arguments for the function "hlua_channel_dup_yield". */
2831__LJMP static int hlua_channel_dup(lua_State *L)
2832{
2833 MAY_LJMP(check_args(L, 1, "dup"));
2834 MAY_LJMP(hlua_checkchannel(L, 1));
2835 return MAY_LJMP(hlua_channel_dup_yield(L, 0, 0));
2836}
2837
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002838/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2839 * a yield. This function consumes the data in the buffer. It returns
2840 * a string containing the data or a nil pointer if no data are available
2841 * and the channel is closed.
2842 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002843__LJMP static int hlua_channel_get_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002844{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002845 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002846 int ret;
2847
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002848 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002849
Christopher Faulet3f829a42018-12-13 21:56:45 +01002850 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
2851 WILL_LJMP(lua_error(L));
2852
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002853 ret = _hlua_channel_dup(chn, L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002854 if (unlikely(ret == 0))
Willy Tarreau9635e032018-10-16 17:52:55 +02002855 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_get_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002856
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002857 if (unlikely(ret == -1))
2858 return 1;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002859
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002860 b_sub(&chn->buf, ret);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002861 return 1;
2862}
2863
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002864/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002865__LJMP static int hlua_channel_get(lua_State *L)
2866{
2867 MAY_LJMP(check_args(L, 1, "get"));
2868 MAY_LJMP(hlua_checkchannel(L, 1));
2869 return MAY_LJMP(hlua_channel_get_yield(L, 0, 0));
2870}
2871
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002872/* This functions consumes and returns one line. If the channel is closed,
2873 * and the last data does not contains a final '\n', the data are returned
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002874 * without the final '\n'. When no more data are available, it returns nil
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002875 * value.
2876 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002877__LJMP static int hlua_channel_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002878{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002879 char *blk1;
2880 char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02002881 size_t len1;
2882 size_t len2;
2883 size_t len;
Willy Tarreau47860ed2015-03-10 14:07:50 +01002884 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002885 int ret;
2886 luaL_Buffer b;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002887
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002888 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2889
Christopher Faulet3f829a42018-12-13 21:56:45 +01002890 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
2891 WILL_LJMP(lua_error(L));
2892
Willy Tarreau06d80a92017-10-19 14:32:15 +02002893 ret = ci_getline_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002894 if (ret == 0)
Willy Tarreau9635e032018-10-16 17:52:55 +02002895 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_getline_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002896
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002897 if (ret == -1) {
2898 lua_pushnil(L);
2899 return 1;
2900 }
2901
2902 luaL_buffinit(L, &b);
2903 luaL_addlstring(&b, blk1, len1);
2904 len = len1;
2905 if (unlikely(ret == 2)) {
2906 luaL_addlstring(&b, blk2, len2);
2907 len += len2;
2908 }
2909 luaL_pushresult(&b);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002910 b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn) + len, NULL, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002911 return 1;
2912}
2913
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002914/* Check arguments for the function "hlua_channel_getline_yield". */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002915__LJMP static int hlua_channel_getline(lua_State *L)
2916{
2917 MAY_LJMP(check_args(L, 1, "getline"));
2918 MAY_LJMP(hlua_checkchannel(L, 1));
2919 return MAY_LJMP(hlua_channel_getline_yield(L, 0, 0));
2920}
2921
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002922/* This function takes a string as input, and append it at the
2923 * input side of channel. If the data is too big, but a space
2924 * is probably available after sending some data, the function
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002925 * yields. If the data is bigger than the buffer, or if the
2926 * channel is closed, it returns -1. Otherwise, it returns the
2927 * amount of data written.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002928 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002929__LJMP static int hlua_channel_append_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002930{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002931 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002932 size_t len;
2933 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
2934 int l = MAY_LJMP(luaL_checkinteger(L, 3));
2935 int ret;
2936 int max;
2937
Christopher Faulet3f829a42018-12-13 21:56:45 +01002938 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
2939 WILL_LJMP(lua_error(L));
2940
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002941 /* Check if the buffer is available because HAProxy doesn't allocate
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002942 * the request buffer if its not required.
2943 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002944 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01002945 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02002946 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002947 }
2948
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002949 max = channel_recv_limit(chn) - b_data(&chn->buf);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002950 if (max > len - l)
2951 max = len - l;
2952
Willy Tarreau06d80a92017-10-19 14:32:15 +02002953 ret = ci_putblk(chn, str + l, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002954 if (ret == -2 || ret == -3) {
2955 lua_pushinteger(L, -1);
2956 return 1;
2957 }
Willy Tarreaubc18da12015-03-13 14:00:47 +01002958 if (ret == -1) {
2959 chn->flags |= CF_WAKE_WRITE;
Willy Tarreau9635e032018-10-16 17:52:55 +02002960 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Willy Tarreaubc18da12015-03-13 14:00:47 +01002961 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002962 l += ret;
2963 lua_pop(L, 1);
2964 lua_pushinteger(L, l);
2965
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002966 max = channel_recv_limit(chn) - b_data(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02002967 if (max == 0 && co_data(chn) == 0) {
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002968 /* There are no space available, and the output buffer is empty.
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002969 * in this case, we cannot add more data, so we cannot yield,
2970 * we return the amount of copyied data.
2971 */
2972 return 1;
2973 }
2974 if (l < len)
Willy Tarreau9635e032018-10-16 17:52:55 +02002975 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002976 return 1;
2977}
2978
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002979/* Just a wrapper of "hlua_channel_append_yield". It returns the length
2980 * of the written string, or -1 if the channel is closed or if the
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002981 * buffer size is too little for the data.
2982 */
2983__LJMP static int hlua_channel_append(lua_State *L)
2984{
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002985 size_t len;
2986
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002987 MAY_LJMP(check_args(L, 2, "append"));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002988 MAY_LJMP(hlua_checkchannel(L, 1));
2989 MAY_LJMP(luaL_checklstring(L, 2, &len));
2990 MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002991 lua_pushinteger(L, 0);
2992
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002993 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002994}
2995
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002996/* Just a wrapper of "hlua_channel_append_yield". This wrapper starts
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002997 * his process by cleaning the buffer. The result is a replacement
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08002998 * of the current data. It returns the length of the written string,
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002999 * or -1 if the channel is closed or if the buffer size is too
3000 * little for the data.
3001 */
3002__LJMP static int hlua_channel_set(lua_State *L)
3003{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003004 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003005
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003006 MAY_LJMP(check_args(L, 2, "set"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003007 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003008 lua_pushinteger(L, 0);
3009
Christopher Faulet3f829a42018-12-13 21:56:45 +01003010 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
3011 WILL_LJMP(lua_error(L));
3012
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003013 b_set_data(&chn->buf, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003014
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003015 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003016}
3017
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003018/* Append data in the output side of the buffer. This data is immediately
3019 * sent. The function returns the amount of data written. If the buffer
3020 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003021 * if the channel is closed.
3022 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003023__LJMP static int hlua_channel_send_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003024{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003025 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003026 size_t len;
3027 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3028 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3029 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003030 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003031
Christopher Faulet3f829a42018-12-13 21:56:45 +01003032 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
3033 WILL_LJMP(lua_error(L));
3034
Willy Tarreau47860ed2015-03-10 14:07:50 +01003035 if (unlikely(channel_output_closed(chn))) {
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003036 lua_pushinteger(L, -1);
3037 return 1;
3038 }
3039
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003040 /* Check if the buffer is available because HAProxy doesn't allocate
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003041 * the request buffer if its not required.
3042 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003043 if (chn->buf.size == 0) {
Willy Tarreau4b962a42018-11-15 11:03:21 +01003044 si_rx_buff_blk(chn_prod(chn));
Willy Tarreau9635e032018-10-16 17:52:55 +02003045 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01003046 }
3047
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003048 /* The written data will be immediately sent, so we can check
3049 * the available space without taking in account the reserve.
3050 * The reserve is guaranteed for the processing of incoming
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003051 * data, because the buffer will be flushed.
3052 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003053 max = b_room(&chn->buf);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003054
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003055 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003056 * in this case, we cannot add more data, so we cannot yield,
3057 * we return the amount of copyied data.
3058 */
Willy Tarreaua79021a2018-06-15 18:07:57 +02003059 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003060 return 1;
3061
3062 /* Adjust the real required length. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003063 if (max > len - l)
3064 max = len - l;
3065
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003066 /* The buffer available size may be not contiguous. This test
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003067 * detects a non contiguous buffer and realign it.
3068 */
Willy Tarreau3f679992018-06-15 15:06:42 +02003069 if (ci_space_for_replace(chn) < max)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003070 channel_slow_realign(chn, trash.area);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003071
3072 /* Copy input data in the buffer. */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003073 max = b_rep_blk(&chn->buf, ci_head(chn), ci_head(chn), str + l, max);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003074
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003075 /* buffer replace considers that the input part is filled.
3076 * so, I must forward these new data in the output part.
3077 */
Willy Tarreaubcbd3932018-06-06 07:13:22 +02003078 c_adv(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003079
3080 l += max;
3081 lua_pop(L, 1);
3082 lua_pushinteger(L, l);
3083
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003084 /* If there is no space available, and the output buffer is empty.
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003085 * in this case, we cannot add more data, so we cannot yield,
3086 * we return the amount of copyied data.
3087 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003088 max = b_room(&chn->buf);
Willy Tarreaua79021a2018-06-15 18:07:57 +02003089 if (max == 0 && co_data(chn) == 0)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003090 return 1;
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01003091
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003092 if (l < len) {
3093 /* If we are waiting for space in the response buffer, we
3094 * must set the flag WAKERESWR. This flag required the task
3095 * wake up if any activity is detected on the response buffer.
3096 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003097 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003098 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003099 else
3100 HLUA_SET_WAKEREQWR(hlua);
Willy Tarreau9635e032018-10-16 17:52:55 +02003101 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003102 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003103
3104 return 1;
3105}
3106
3107/* Just a wraper of "_hlua_channel_send". This wrapper permits
3108 * yield the LUA process, and resume it without checking the
3109 * input arguments.
3110 */
3111__LJMP static int hlua_channel_send(lua_State *L)
3112{
3113 MAY_LJMP(check_args(L, 2, "send"));
3114 lua_pushinteger(L, 0);
3115
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003116 return MAY_LJMP(hlua_channel_send_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003117}
3118
3119/* This function forward and amount of butes. The data pass from
3120 * the input side of the buffer to the output side, and can be
3121 * forwarded. This function never fails.
3122 *
3123 * The Lua function takes an amount of bytes to be forwarded in
3124 * imput. It returns the number of bytes forwarded.
3125 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003126__LJMP static int hlua_channel_forward_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003127{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003128 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003129 int len;
3130 int l;
3131 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003132 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003133
3134 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Faulet3f829a42018-12-13 21:56:45 +01003135
3136 if (chn_strm(chn)->be->mode == PR_MODE_HTTP)
3137 WILL_LJMP(lua_error(L));
3138
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003139 len = MAY_LJMP(luaL_checkinteger(L, 2));
3140 l = MAY_LJMP(luaL_checkinteger(L, -1));
3141
3142 max = len - l;
Willy Tarreaua79021a2018-06-15 18:07:57 +02003143 if (max > ci_data(chn))
3144 max = ci_data(chn);
Willy Tarreau47860ed2015-03-10 14:07:50 +01003145 channel_forward(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003146 l += max;
3147
3148 lua_pop(L, 1);
3149 lua_pushinteger(L, l);
3150
3151 /* Check if it miss bytes to forward. */
3152 if (l < len) {
3153 /* The the input channel or the output channel are closed, we
3154 * must return the amount of data forwarded.
3155 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003156 if (channel_input_closed(chn) || channel_output_closed(chn))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003157 return 1;
3158
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003159 /* If we are waiting for space data in the response buffer, we
3160 * must set the flag WAKERESWR. This flag required the task
3161 * wake up if any activity is detected on the response buffer.
3162 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01003163 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003164 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01003165 else
3166 HLUA_SET_WAKEREQWR(hlua);
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01003167
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003168 /* Otherwise, we can yield waiting for new data in the inpout side. */
Willy Tarreau9635e032018-10-16 17:52:55 +02003169 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_forward_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003170 }
3171
3172 return 1;
3173}
3174
3175/* Just check the input and prepare the stack for the previous
3176 * function "hlua_channel_forward_yield"
3177 */
3178__LJMP static int hlua_channel_forward(lua_State *L)
3179{
3180 MAY_LJMP(check_args(L, 2, "forward"));
3181 MAY_LJMP(hlua_checkchannel(L, 1));
3182 MAY_LJMP(luaL_checkinteger(L, 2));
3183
3184 lua_pushinteger(L, 0);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01003185 return MAY_LJMP(hlua_channel_forward_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003186}
3187
3188/* Just returns the number of bytes available in the input
3189 * side of the buffer. This function never fails.
3190 */
3191__LJMP static int hlua_channel_get_in_len(lua_State *L)
3192{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003193 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003194
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003195 MAY_LJMP(check_args(L, 1, "get_in_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003196 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Christopher Fauleta3ceac12018-12-14 13:39:09 +01003197 if (IS_HTX_STRM(chn_strm(chn))) {
3198 struct htx *htx = htxbuf(&chn->buf);
3199 lua_pushinteger(L, htx->data - co_data(chn));
3200 }
3201 else
3202 lua_pushinteger(L, ci_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003203 return 1;
3204}
3205
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003206/* Returns true if the channel is full. */
3207__LJMP static int hlua_channel_is_full(lua_State *L)
3208{
3209 struct channel *chn;
3210 int rem;
3211
3212 MAY_LJMP(check_args(L, 1, "is_full"));
3213 chn = MAY_LJMP(hlua_checkchannel(L, 1));
3214
Christopher Fauleta3ceac12018-12-14 13:39:09 +01003215 if (IS_HTX_STRM(chn_strm(chn))) {
3216 struct htx *htx = htxbuf(&chn->buf);
3217
3218 rem = htx_free_data_space(htx);
3219 }
3220 else
3221 rem = b_room(&chn->buf);
3222
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01003223 rem -= global.tune.maxrewrite; /* Rewrite reserved size */
3224
3225 lua_pushboolean(L, rem <= 0);
3226 return 1;
3227}
3228
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003229/* Just returns the number of bytes available in the output
3230 * side of the buffer. This function never fails.
3231 */
3232__LJMP static int hlua_channel_get_out_len(lua_State *L)
3233{
Willy Tarreau47860ed2015-03-10 14:07:50 +01003234 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003235
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003236 MAY_LJMP(check_args(L, 1, "get_out_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01003237 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Willy Tarreaua79021a2018-06-15 18:07:57 +02003238 lua_pushinteger(L, co_data(chn));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003239 return 1;
3240}
3241
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003242/*
3243 *
3244 *
3245 * Class Fetches
3246 *
3247 *
3248 */
3249
3250/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003251 * a class stream, otherwise it throws an error.
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003252 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003253__LJMP static struct hlua_smp *hlua_checkfetches(lua_State *L, int ud)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003254{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003255 return MAY_LJMP(hlua_checkudata(L, ud, class_fetches_ref));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003256}
3257
3258/* This function creates and push in the stack a fetch object according
3259 * with a current TXN.
3260 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003261static int hlua_fetches_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003262{
Willy Tarreau7073c472015-04-06 11:15:40 +02003263 struct hlua_smp *hsmp;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003264
3265 /* Check stack size. */
3266 if (!lua_checkstack(L, 3))
3267 return 0;
3268
3269 /* Create the object: obj[0] = userdata.
3270 * Note that the base of the Fetches object is the
3271 * transaction object.
3272 */
3273 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003274 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003275 lua_rawseti(L, -2, 0);
3276
Willy Tarreau7073c472015-04-06 11:15:40 +02003277 hsmp->s = txn->s;
3278 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003279 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003280 hsmp->flags = flags;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003281
3282 /* Pop a class sesison metatable and affect it to the userdata. */
3283 lua_rawgeti(L, LUA_REGISTRYINDEX, class_fetches_ref);
3284 lua_setmetatable(L, -2);
3285
3286 return 1;
3287}
3288
3289/* This function is an LUA binding. It is called with each sample-fetch.
3290 * It uses closure argument to store the associated sample-fetch. It
3291 * returns only one argument or throws an error. An error is thrown
3292 * only if an error is encountered during the argument parsing. If
3293 * the "sample-fetch" function fails, nil is returned.
3294 */
3295__LJMP static int hlua_run_sample_fetch(lua_State *L)
3296{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003297 struct hlua_smp *hsmp;
Willy Tarreau2ec22742015-03-10 14:27:20 +01003298 struct sample_fetch *f;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003299 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003300 int i;
3301 struct sample smp;
3302
3303 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003304 f = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003305
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003306 /* Get traditional arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003307 hsmp = MAY_LJMP(hlua_checkfetches(L, 1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003308
Thierry FOURNIERca988662015-12-20 18:43:03 +01003309 /* Check execution authorization. */
3310 if (f->use & SMP_USE_HTTP_ANY &&
3311 !(hsmp->flags & HLUA_F_MAY_USE_HTTP)) {
3312 lua_pushfstring(L, "the sample-fetch '%s' needs an HTTP parser which "
3313 "is not available in Lua services", f->kw);
3314 WILL_LJMP(lua_error(L));
3315 }
3316
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003317 /* Get extra arguments. */
3318 for (i = 0; i < lua_gettop(L) - 1; i++) {
3319 if (i >= ARGM_NBARGS)
3320 break;
3321 hlua_lua2arg(L, i + 2, &args[i]);
3322 }
3323 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003324 args[i].data.str.area = NULL;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003325
3326 /* Check arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003327 MAY_LJMP(hlua_lua2arg_check(L, 2, args, f->arg_mask, hsmp->p));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003328
3329 /* Run the special args checker. */
Willy Tarreau2ec22742015-03-10 14:27:20 +01003330 if (f->val_args && !f->val_args(args, NULL)) {
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003331 lua_pushfstring(L, "error in arguments");
3332 WILL_LJMP(lua_error(L));
3333 }
3334
3335 /* Initialise the sample. */
3336 memset(&smp, 0, sizeof(smp));
3337
3338 /* Run the sample fetch process. */
Willy Tarreau1777ea62016-03-10 16:15:46 +01003339 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
Thierry FOURNIER0786d052015-05-11 15:42:45 +02003340 if (!f->process(args, &smp, f->kw, f->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003341 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003342 lua_pushstring(L, "");
3343 else
3344 lua_pushnil(L);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003345 return 1;
3346 }
3347
3348 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003349 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003350 hlua_smp2lua_str(L, &smp);
3351 else
3352 hlua_smp2lua(L, &smp);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003353 return 1;
3354}
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003355
3356/*
3357 *
3358 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003359 * Class Converters
3360 *
3361 *
3362 */
3363
3364/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003365 * a class stream, otherwise it throws an error.
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003366 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003367__LJMP static struct hlua_smp *hlua_checkconverters(lua_State *L, int ud)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003368{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003369 return MAY_LJMP(hlua_checkudata(L, ud, class_converters_ref));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003370}
3371
3372/* This function creates and push in the stack a Converters object
3373 * according with a current TXN.
3374 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003375static int hlua_converters_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003376{
Willy Tarreau7073c472015-04-06 11:15:40 +02003377 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003378
3379 /* Check stack size. */
3380 if (!lua_checkstack(L, 3))
3381 return 0;
3382
3383 /* Create the object: obj[0] = userdata.
3384 * Note that the base of the Converters object is the
3385 * same than the TXN object.
3386 */
3387 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003388 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003389 lua_rawseti(L, -2, 0);
3390
Willy Tarreau7073c472015-04-06 11:15:40 +02003391 hsmp->s = txn->s;
3392 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003393 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003394 hsmp->flags = flags;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003395
Willy Tarreau87b09662015-04-03 00:22:06 +02003396 /* Pop a class stream metatable and affect it to the table. */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003397 lua_rawgeti(L, LUA_REGISTRYINDEX, class_converters_ref);
3398 lua_setmetatable(L, -2);
3399
3400 return 1;
3401}
3402
3403/* This function is an LUA binding. It is called with each converter.
3404 * It uses closure argument to store the associated converter. It
3405 * returns only one argument or throws an error. An error is thrown
3406 * only if an error is encountered during the argument parsing. If
3407 * the converter function function fails, nil is returned.
3408 */
3409__LJMP static int hlua_run_sample_conv(lua_State *L)
3410{
Willy Tarreauda5f1082015-04-06 11:17:13 +02003411 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003412 struct sample_conv *conv;
Frédéric Lécaillef874a832018-06-15 13:56:04 +02003413 struct arg args[ARGM_NBARGS + 1] = {{0}};
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003414 int i;
3415 struct sample smp;
3416
3417 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003418 conv = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003419
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003420 /* Get traditional arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003421 hsmp = MAY_LJMP(hlua_checkconverters(L, 1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003422
3423 /* Get extra arguments. */
3424 for (i = 0; i < lua_gettop(L) - 2; i++) {
3425 if (i >= ARGM_NBARGS)
3426 break;
3427 hlua_lua2arg(L, i + 3, &args[i]);
3428 }
3429 args[i].type = ARGT_STOP;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003430 args[i].data.str.area = NULL;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003431
3432 /* Check arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003433 MAY_LJMP(hlua_lua2arg_check(L, 3, args, conv->arg_mask, hsmp->p));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003434
3435 /* Run the special args checker. */
3436 if (conv->val_args && !conv->val_args(args, conv, "", 0, NULL)) {
3437 hlua_pusherror(L, "error in arguments");
3438 WILL_LJMP(lua_error(L));
3439 }
3440
3441 /* Initialise the sample. */
3442 if (!hlua_lua2smp(L, 2, &smp)) {
3443 hlua_pusherror(L, "error in the input argument");
3444 WILL_LJMP(lua_error(L));
3445 }
3446
Willy Tarreau1777ea62016-03-10 16:15:46 +01003447 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
3448
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003449 /* Apply expected cast. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003450 if (!sample_casts[smp.data.type][conv->in_type]) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003451 hlua_pusherror(L, "invalid input argument: cannot cast '%s' to '%s'",
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003452 smp_to_type[smp.data.type], smp_to_type[conv->in_type]);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003453 WILL_LJMP(lua_error(L));
3454 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003455 if (sample_casts[smp.data.type][conv->in_type] != c_none &&
3456 !sample_casts[smp.data.type][conv->in_type](&smp)) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003457 hlua_pusherror(L, "error during the input argument casting");
3458 WILL_LJMP(lua_error(L));
3459 }
3460
3461 /* Run the sample conversion process. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02003462 if (!conv->process(args, &smp, conv->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003463 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003464 lua_pushstring(L, "");
3465 else
Willy Tarreaua678b432015-08-28 10:14:59 +02003466 lua_pushnil(L);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003467 return 1;
3468 }
3469
3470 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003471 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003472 hlua_smp2lua_str(L, &smp);
3473 else
3474 hlua_smp2lua(L, &smp);
Willy Tarreaua678b432015-08-28 10:14:59 +02003475 return 1;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003476}
3477
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003478/*
3479 *
3480 *
3481 * Class AppletTCP
3482 *
3483 *
3484 */
3485
3486/* Returns a struct hlua_txn if the stack entry "ud" is
3487 * a class stream, otherwise it throws an error.
3488 */
3489__LJMP static struct hlua_appctx *hlua_checkapplet_tcp(lua_State *L, int ud)
3490{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003491 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_tcp_ref));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003492}
3493
3494/* This function creates and push in the stack an Applet object
3495 * according with a current TXN.
3496 */
3497static int hlua_applet_tcp_new(lua_State *L, struct appctx *ctx)
3498{
3499 struct hlua_appctx *appctx;
3500 struct stream_interface *si = ctx->owner;
3501 struct stream *s = si_strm(si);
3502 struct proxy *p = s->be;
3503
3504 /* Check stack size. */
3505 if (!lua_checkstack(L, 3))
3506 return 0;
3507
3508 /* Create the object: obj[0] = userdata.
3509 * Note that the base of the Converters object is the
3510 * same than the TXN object.
3511 */
3512 lua_newtable(L);
3513 appctx = lua_newuserdata(L, sizeof(*appctx));
3514 lua_rawseti(L, -2, 0);
3515 appctx->appctx = ctx;
3516 appctx->htxn.s = s;
3517 appctx->htxn.p = p;
3518
3519 /* Create the "f" field that contains a list of fetches. */
3520 lua_pushstring(L, "f");
3521 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3522 return 0;
3523 lua_settable(L, -3);
3524
3525 /* Create the "sf" field that contains a list of stringsafe fetches. */
3526 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003527 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003528 return 0;
3529 lua_settable(L, -3);
3530
3531 /* Create the "c" field that contains a list of converters. */
3532 lua_pushstring(L, "c");
3533 if (!hlua_converters_new(L, &appctx->htxn, 0))
3534 return 0;
3535 lua_settable(L, -3);
3536
3537 /* Create the "sc" field that contains a list of stringsafe converters. */
3538 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003539 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003540 return 0;
3541 lua_settable(L, -3);
3542
3543 /* Pop a class stream metatable and affect it to the table. */
3544 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_tcp_ref);
3545 lua_setmetatable(L, -2);
3546
3547 return 1;
3548}
3549
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003550__LJMP static int hlua_applet_tcp_set_var(lua_State *L)
3551{
3552 struct hlua_appctx *appctx;
3553 struct stream *s;
3554 const char *name;
3555 size_t len;
3556 struct sample smp;
3557
3558 MAY_LJMP(check_args(L, 3, "set_var"));
3559
3560 /* It is useles to retrieve the stream, but this function
3561 * runs only in a stream context.
3562 */
3563 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3564 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3565 s = appctx->htxn.s;
3566
3567 /* Converts the third argument in a sample. */
3568 hlua_lua2smp(L, 3, &smp);
3569
3570 /* Store the sample in a variable. */
3571 smp_set_owner(&smp, s->be, s->sess, s, 0);
3572 vars_set_by_name(name, len, &smp);
3573 return 0;
3574}
3575
3576__LJMP static int hlua_applet_tcp_unset_var(lua_State *L)
3577{
3578 struct hlua_appctx *appctx;
3579 struct stream *s;
3580 const char *name;
3581 size_t len;
3582 struct sample smp;
3583
3584 MAY_LJMP(check_args(L, 2, "unset_var"));
3585
3586 /* It is useles to retrieve the stream, but this function
3587 * runs only in a stream context.
3588 */
3589 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3590 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3591 s = appctx->htxn.s;
3592
3593 /* Unset the variable. */
3594 smp_set_owner(&smp, s->be, s->sess, s, 0);
3595 vars_unset_by_name(name, len, &smp);
3596 return 0;
3597}
3598
3599__LJMP static int hlua_applet_tcp_get_var(lua_State *L)
3600{
3601 struct hlua_appctx *appctx;
3602 struct stream *s;
3603 const char *name;
3604 size_t len;
3605 struct sample smp;
3606
3607 MAY_LJMP(check_args(L, 2, "get_var"));
3608
3609 /* It is useles to retrieve the stream, but this function
3610 * runs only in a stream context.
3611 */
3612 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3613 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3614 s = appctx->htxn.s;
3615
3616 smp_set_owner(&smp, s->be, s->sess, s, 0);
3617 if (!vars_get_by_name(name, len, &smp)) {
3618 lua_pushnil(L);
3619 return 1;
3620 }
3621
3622 return hlua_smp2lua(L, &smp);
3623}
3624
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003625__LJMP static int hlua_applet_tcp_set_priv(lua_State *L)
3626{
3627 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3628 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003629 struct hlua *hlua;
3630
3631 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003632 if (!s->hlua)
3633 return 0;
3634 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003635
3636 MAY_LJMP(check_args(L, 2, "set_priv"));
3637
3638 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02003639 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003640
3641 /* Get and store new value. */
3642 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
3643 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
3644
3645 return 0;
3646}
3647
3648__LJMP static int hlua_applet_tcp_get_priv(lua_State *L)
3649{
3650 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3651 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003652 struct hlua *hlua;
3653
3654 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003655 if (!s->hlua) {
3656 lua_pushnil(L);
3657 return 1;
3658 }
3659 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003660
3661 /* Push configuration index in the stack. */
3662 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
3663
3664 return 1;
3665}
3666
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003667/* If expected data not yet available, it returns a yield. This function
3668 * consumes the data in the buffer. It returns a string containing the
3669 * data. This string can be empty.
3670 */
3671__LJMP static int hlua_applet_tcp_getline_yield(lua_State *L, int status, lua_KContext ctx)
3672{
3673 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3674 struct stream_interface *si = appctx->appctx->owner;
3675 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003676 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003677 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003678 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003679 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003680
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003681 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003682 ret = co_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003683
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003684 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003685 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003686 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003687 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_getline_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003688 }
3689
3690 /* End of data: commit the total strings and return. */
3691 if (ret < 0) {
3692 luaL_pushresult(&appctx->b);
3693 return 1;
3694 }
3695
3696 /* Ensure that the block 2 length is usable. */
3697 if (ret == 1)
3698 len2 = 0;
3699
3700 /* dont check the max length read and dont check. */
3701 luaL_addlstring(&appctx->b, blk1, len1);
3702 luaL_addlstring(&appctx->b, blk2, len2);
3703
3704 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003705 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003706 luaL_pushresult(&appctx->b);
3707 return 1;
3708}
3709
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003710/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003711__LJMP static int hlua_applet_tcp_getline(lua_State *L)
3712{
3713 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3714
3715 /* Initialise the string catenation. */
3716 luaL_buffinit(L, &appctx->b);
3717
3718 return MAY_LJMP(hlua_applet_tcp_getline_yield(L, 0, 0));
3719}
3720
3721/* If expected data not yet available, it returns a yield. This function
3722 * consumes the data in the buffer. It returns a string containing the
3723 * data. This string can be empty.
3724 */
3725__LJMP static int hlua_applet_tcp_recv_yield(lua_State *L, int status, lua_KContext ctx)
3726{
3727 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3728 struct stream_interface *si = appctx->appctx->owner;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003729 size_t len = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003730 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02003731 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003732 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02003733 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02003734 size_t len2;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003735
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003736 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003737 ret = co_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003738
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003739 /* Data not yet available. return yield. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003740 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003741 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003742 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003743 }
3744
3745 /* End of data: commit the total strings and return. */
3746 if (ret < 0) {
3747 luaL_pushresult(&appctx->b);
3748 return 1;
3749 }
3750
3751 /* Ensure that the block 2 length is usable. */
3752 if (ret == 1)
3753 len2 = 0;
3754
3755 if (len == -1) {
3756
3757 /* If len == -1, catenate all the data avalaile and
3758 * yield because we want to get all the data until
3759 * the end of data stream.
3760 */
3761 luaL_addlstring(&appctx->b, blk1, len1);
3762 luaL_addlstring(&appctx->b, blk2, len2);
Willy Tarreau06d80a92017-10-19 14:32:15 +02003763 co_skip(si_oc(si), len1 + len2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003764 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003765 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003766
3767 } else {
3768
3769 /* Copy the fisrt block caping to the length required. */
3770 if (len1 > len)
3771 len1 = len;
3772 luaL_addlstring(&appctx->b, blk1, len1);
3773 len -= len1;
3774
3775 /* Copy the second block. */
3776 if (len2 > len)
3777 len2 = len;
3778 luaL_addlstring(&appctx->b, blk2, len2);
3779 len -= len2;
3780
3781 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003782 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003783
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003784 /* If there is no other data available, yield waiting for new data. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003785 if (len > 0) {
3786 lua_pushinteger(L, len);
3787 lua_replace(L, 2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003788 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003789 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003790 }
3791
3792 /* return the result. */
3793 luaL_pushresult(&appctx->b);
3794 return 1;
3795 }
3796
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003797 /* we never execute this */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003798 hlua_pusherror(L, "Lua: internal error");
3799 WILL_LJMP(lua_error(L));
3800 return 0;
3801}
3802
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003803/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003804__LJMP static int hlua_applet_tcp_recv(lua_State *L)
3805{
3806 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3807 int len = -1;
3808
3809 if (lua_gettop(L) > 2)
3810 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
3811 if (lua_gettop(L) >= 2) {
3812 len = MAY_LJMP(luaL_checkinteger(L, 2));
3813 lua_pop(L, 1);
3814 }
3815
3816 /* Confirm or set the required length */
3817 lua_pushinteger(L, len);
3818
3819 /* Initialise the string catenation. */
3820 luaL_buffinit(L, &appctx->b);
3821
3822 return MAY_LJMP(hlua_applet_tcp_recv_yield(L, 0, 0));
3823}
3824
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08003825/* Append data in the output side of the buffer. This data is immediately
3826 * sent. The function returns the amount of data written. If the buffer
3827 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003828 * if the channel is closed.
3829 */
3830__LJMP static int hlua_applet_tcp_send_yield(lua_State *L, int status, lua_KContext ctx)
3831{
3832 size_t len;
3833 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3834 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3835 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3836 struct stream_interface *si = appctx->appctx->owner;
3837 struct channel *chn = si_ic(si);
3838 int max;
3839
3840 /* Get the max amount of data which can write as input in the channel. */
3841 max = channel_recv_max(chn);
3842 if (max > (len - l))
3843 max = len - l;
3844
3845 /* Copy data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02003846 ci_putblk(chn, str + l, max);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003847
3848 /* update counters. */
3849 l += max;
3850 lua_pop(L, 1);
3851 lua_pushinteger(L, l);
3852
3853 /* If some data is not send, declares the situation to the
3854 * applet, and returns a yield.
3855 */
3856 if (l < len) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003857 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02003858 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003859 }
3860
3861 return 1;
3862}
3863
3864/* Just a wraper of "hlua_applet_tcp_send_yield". This wrapper permits
3865 * yield the LUA process, and resume it without checking the
3866 * input arguments.
3867 */
3868__LJMP static int hlua_applet_tcp_send(lua_State *L)
3869{
3870 MAY_LJMP(check_args(L, 2, "send"));
3871 lua_pushinteger(L, 0);
3872
3873 return MAY_LJMP(hlua_applet_tcp_send_yield(L, 0, 0));
3874}
3875
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003876/*
3877 *
3878 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003879 * Class AppletHTTP
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003880 *
3881 *
3882 */
3883
3884/* Returns a struct hlua_txn if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003885 * a class stream, otherwise it throws an error.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003886 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003887__LJMP static struct hlua_appctx *hlua_checkapplet_http(lua_State *L, int ud)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003888{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003889 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_http_ref));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003890}
3891
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003892/* This function creates and push in the stack an Applet object
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003893 * according with a current TXN.
3894 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003895static int hlua_applet_http_new(lua_State *L, struct appctx *ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003896{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003897 struct hlua_appctx *appctx;
Thierry FOURNIER841475e2015-12-11 17:10:09 +01003898 struct hlua_txn htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003899 struct stream_interface *si = ctx->owner;
3900 struct stream *s = si_strm(si);
3901 struct proxy *px = s->be;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003902
3903 /* Check stack size. */
3904 if (!lua_checkstack(L, 3))
3905 return 0;
3906
3907 /* Create the object: obj[0] = userdata.
3908 * Note that the base of the Converters object is the
3909 * same than the TXN object.
3910 */
3911 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003912 appctx = lua_newuserdata(L, sizeof(*appctx));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003913 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003914 appctx->appctx = ctx;
3915 appctx->appctx->ctx.hlua_apphttp.status = 200; /* Default status code returned. */
Robin H. Johnson52f5db22017-01-01 13:10:52 -08003916 appctx->appctx->ctx.hlua_apphttp.reason = NULL; /* Use default reason based on status */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003917 appctx->htxn.s = s;
3918 appctx->htxn.p = px;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003919
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003920 /* Create the "f" field that contains a list of fetches. */
3921 lua_pushstring(L, "f");
3922 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3923 return 0;
3924 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003925
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003926 /* Create the "sf" field that contains a list of stringsafe fetches. */
3927 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003928 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003929 return 0;
3930 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003931
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003932 /* Create the "c" field that contains a list of converters. */
3933 lua_pushstring(L, "c");
3934 if (!hlua_converters_new(L, &appctx->htxn, 0))
3935 return 0;
3936 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003937
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003938 /* Create the "sc" field that contains a list of stringsafe converters. */
3939 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003940 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003941 return 0;
3942 lua_settable(L, -3);
Willy Tarreaueee5b512015-04-03 23:46:31 +02003943
Christopher Faulet9c832fc2018-12-14 13:34:05 +01003944 if (IS_HTX_STRM(s)) {
3945 /* HTX version */
3946 struct htx *htx = htxbuf(&s->req.buf);
Christopher Faulet29f17582019-05-23 11:03:26 +02003947 struct htx_blk *blk;
3948 struct htx_sl *sl;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01003949 struct ist path;
3950 unsigned long long len = 0;
3951 int32_t pos;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003952
Christopher Faulet29f17582019-05-23 11:03:26 +02003953 blk = htx_get_first_blk(htx);
3954 BUG_ON(htx_get_blk_type(blk) != HTX_BLK_REQ_SL);
3955 sl = htx_get_blk_ptr(htx, blk);
3956
Christopher Faulet9c832fc2018-12-14 13:34:05 +01003957 /* Stores the request method. */
3958 lua_pushstring(L, "method");
3959 lua_pushlstring(L, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl));
3960 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003961
Christopher Faulet9c832fc2018-12-14 13:34:05 +01003962 /* Stores the http version. */
3963 lua_pushstring(L, "version");
3964 lua_pushlstring(L, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl));
3965 lua_settable(L, -3);
Thierry FOURNIER841475e2015-12-11 17:10:09 +01003966
Christopher Faulet9c832fc2018-12-14 13:34:05 +01003967 /* creates an array of headers. hlua_http_get_headers() crates and push
3968 * the array on the top of the stack.
3969 */
3970 lua_pushstring(L, "headers");
3971 htxn.s = s;
3972 htxn.p = px;
3973 htxn.dir = SMP_OPT_DIR_REQ;
3974 if (!hlua_http_get_headers(L, &htxn, &htxn.s->txn->req))
3975 return 0;
3976 lua_settable(L, -3);
3977
3978 path = http_get_path(htx_sl_req_uri(sl));
3979 if (path.ptr) {
3980 char *p, *q, *end;
3981
3982 p = path.ptr;
3983 end = path.ptr + path.len;
3984 q = p;
3985 while (q < end && *q != '?')
3986 q++;
3987
3988 /* Stores the request path. */
3989 lua_pushstring(L, "path");
3990 lua_pushlstring(L, p, q - p);
3991 lua_settable(L, -3);
3992
3993 /* Stores the query string. */
3994 lua_pushstring(L, "qs");
3995 if (*q == '?')
3996 q++;
3997 lua_pushlstring(L, q, end - q);
3998 lua_settable(L, -3);
3999 }
4000
Christopher Fauleta3f15502019-05-13 15:27:23 +02004001 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004002 struct htx_blk *blk = htx_get_blk(htx, pos);
4003 enum htx_blk_type type = htx_get_blk_type(blk);
4004
Christopher Faulet54b5e212019-06-04 10:08:28 +02004005 if (type == HTX_BLK_EOM || type == HTX_BLK_TLR || type == HTX_BLK_EOT)
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004006 break;
4007 if (type == HTX_BLK_DATA)
4008 len += htx_get_blksz(blk);
4009 }
4010 if (htx->extra != ULLONG_MAX)
4011 len += htx->extra;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004012
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004013 /* Stores the request path. */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004014 lua_pushstring(L, "length");
4015 lua_pushinteger(L, len);
4016 lua_settable(L, -3);
4017 }
4018 else {
4019 /* Legacy HTTP version */
4020 struct http_txn *txn = s->txn;
4021 const char *path;
4022 const char *end;
4023 const char *p;
4024
4025 /* Stores the request method. */
4026 lua_pushstring(L, "method");
4027 lua_pushlstring(L, ci_head(txn->req.chn), txn->req.sl.rq.m_l);
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004028 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004029
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004030 /* Stores the http version. */
4031 lua_pushstring(L, "version");
4032 lua_pushlstring(L, ci_head(txn->req.chn) + txn->req.sl.rq.v, txn->req.sl.rq.v_l);
Thierry FOURNIER7d388632017-02-22 02:06:16 +01004033 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004034
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004035 /* creates an array of headers. hlua_http_get_headers() crates and push
4036 * the array on the top of the stack.
4037 */
4038 lua_pushstring(L, "headers");
4039 htxn.s = s;
4040 htxn.p = px;
4041 htxn.dir = SMP_OPT_DIR_REQ;
4042 if (!hlua_http_get_headers(L, &htxn, &htxn.s->txn->req))
4043 return 0;
4044 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004045
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004046 /* Get path and qs */
4047 path = http_txn_get_path(txn);
4048 if (path) {
4049 end = ci_head(txn->req.chn) + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
4050 p = path;
4051 while (p < end && *p != '?')
4052 p++;
4053
4054 /* Stores the request path. */
4055 lua_pushstring(L, "path");
4056 lua_pushlstring(L, path, p - path);
4057 lua_settable(L, -3);
4058
4059 /* Stores the query string. */
4060 lua_pushstring(L, "qs");
4061 if (*p == '?')
4062 p++;
4063 lua_pushlstring(L, p, end - p);
4064 lua_settable(L, -3);
4065 }
4066
4067 /* Stores the request path. */
4068 lua_pushstring(L, "length");
4069 lua_pushinteger(L, txn->req.body_len);
4070 lua_settable(L, -3);
4071 }
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004072
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004073 /* Create an empty array of HTTP request headers. */
4074 lua_pushstring(L, "response");
4075 lua_newtable(L);
4076 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01004077
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004078 /* Pop a class stream metatable and affect it to the table. */
4079 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_http_ref);
4080 lua_setmetatable(L, -2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004081
4082 return 1;
4083}
4084
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01004085__LJMP static int hlua_applet_http_set_var(lua_State *L)
4086{
4087 struct hlua_appctx *appctx;
4088 struct stream *s;
4089 const char *name;
4090 size_t len;
4091 struct sample smp;
4092
4093 MAY_LJMP(check_args(L, 3, "set_var"));
4094
4095 /* It is useles to retrieve the stream, but this function
4096 * runs only in a stream context.
4097 */
4098 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4099 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4100 s = appctx->htxn.s;
4101
4102 /* Converts the third argument in a sample. */
4103 hlua_lua2smp(L, 3, &smp);
4104
4105 /* Store the sample in a variable. */
4106 smp_set_owner(&smp, s->be, s->sess, s, 0);
4107 vars_set_by_name(name, len, &smp);
4108 return 0;
4109}
4110
4111__LJMP static int hlua_applet_http_unset_var(lua_State *L)
4112{
4113 struct hlua_appctx *appctx;
4114 struct stream *s;
4115 const char *name;
4116 size_t len;
4117 struct sample smp;
4118
4119 MAY_LJMP(check_args(L, 2, "unset_var"));
4120
4121 /* It is useles to retrieve the stream, but this function
4122 * runs only in a stream context.
4123 */
4124 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4125 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4126 s = appctx->htxn.s;
4127
4128 /* Unset the variable. */
4129 smp_set_owner(&smp, s->be, s->sess, s, 0);
4130 vars_unset_by_name(name, len, &smp);
4131 return 0;
4132}
4133
4134__LJMP static int hlua_applet_http_get_var(lua_State *L)
4135{
4136 struct hlua_appctx *appctx;
4137 struct stream *s;
4138 const char *name;
4139 size_t len;
4140 struct sample smp;
4141
4142 MAY_LJMP(check_args(L, 2, "get_var"));
4143
4144 /* It is useles to retrieve the stream, but this function
4145 * runs only in a stream context.
4146 */
4147 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4148 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4149 s = appctx->htxn.s;
4150
4151 smp_set_owner(&smp, s->be, s->sess, s, 0);
4152 if (!vars_get_by_name(name, len, &smp)) {
4153 lua_pushnil(L);
4154 return 1;
4155 }
4156
4157 return hlua_smp2lua(L, &smp);
4158}
4159
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004160__LJMP static int hlua_applet_http_set_priv(lua_State *L)
4161{
4162 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4163 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004164 struct hlua *hlua;
4165
4166 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004167 if (!s->hlua)
4168 return 0;
4169 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004170
4171 MAY_LJMP(check_args(L, 2, "set_priv"));
4172
4173 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02004174 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004175
4176 /* Get and store new value. */
4177 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
4178 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
4179
4180 return 0;
4181}
4182
4183__LJMP static int hlua_applet_http_get_priv(lua_State *L)
4184{
4185 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4186 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01004187 struct hlua *hlua;
4188
4189 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01004190 if (!s->hlua) {
4191 lua_pushnil(L);
4192 return 1;
4193 }
4194 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01004195
4196 /* Push configuration index in the stack. */
4197 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
4198
4199 return 1;
4200}
4201
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004202/* If expected data not yet available, it returns a yield. This function
4203 * consumes the data in the buffer. It returns a string containing the
4204 * data. This string can be empty.
4205 */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004206__LJMP static int hlua_applet_htx_getline_yield(lua_State *L, int status, lua_KContext ctx)
4207{
4208 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4209 struct stream_interface *si = appctx->appctx->owner;
4210 struct channel *req = si_oc(si);
4211 struct htx *htx;
4212 struct htx_blk *blk;
4213 size_t count;
4214 int stop = 0;
4215
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004216 htx = htx_from_buf(&req->buf);
4217 count = co_data(req);
Christopher Fauleta3f15502019-05-13 15:27:23 +02004218 blk = htx_get_first_blk(htx);
Christopher Fauletcc26b132018-12-18 21:20:57 +01004219
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004220 while (count && !stop && blk) {
4221 enum htx_blk_type type = htx_get_blk_type(blk);
4222 uint32_t sz = htx_get_blksz(blk);
4223 struct ist v;
4224 uint32_t vlen;
4225 char *nl;
4226
Christopher Faulete461e342018-12-18 16:43:35 +01004227 if (type == HTX_BLK_EOM) {
4228 stop = 1;
4229 break;
4230 }
4231
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004232 vlen = sz;
4233 if (vlen > count) {
4234 if (type != HTX_BLK_DATA)
4235 break;
4236 vlen = count;
4237 }
4238
4239 switch (type) {
4240 case HTX_BLK_UNUSED:
4241 break;
4242
4243 case HTX_BLK_DATA:
4244 v = htx_get_blk_value(htx, blk);
4245 v.len = vlen;
4246 nl = istchr(v, '\n');
4247 if (nl != NULL) {
4248 stop = 1;
4249 vlen = nl - v.ptr + 1;
4250 }
4251 luaL_addlstring(&appctx->b, v.ptr, vlen);
4252 break;
4253
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004254 case HTX_BLK_TLR:
4255 case HTX_BLK_EOM:
4256 stop = 1;
4257 break;
4258
4259 default:
4260 break;
4261 }
4262
4263 co_set_data(req, co_data(req) - vlen);
4264 count -= vlen;
4265 if (sz == vlen)
4266 blk = htx_remove_blk(htx, blk);
4267 else {
4268 htx_cut_data_blk(htx, blk, vlen);
4269 break;
4270 }
4271 }
4272
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004273 htx_to_buf(htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004274 if (!stop) {
4275 si_cant_get(si);
4276 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_htx_getline_yield, TICK_ETERNITY, 0));
4277 }
4278
4279 /* return the result. */
4280 luaL_pushresult(&appctx->b);
4281 return 1;
4282}
4283
4284
4285/* If expected data not yet available, it returns a yield. This function
4286 * consumes the data in the buffer. It returns a string containing the
4287 * data. This string can be empty.
4288 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004289__LJMP static int hlua_applet_http_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004290{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004291 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4292 struct stream_interface *si = appctx->appctx->owner;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004293 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02004294 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02004295 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02004296 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02004297 size_t len2;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004298
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004299 /* Check for the end of the data. */
4300 if (appctx->appctx->ctx.hlua_apphttp.left_bytes <= 0) {
4301 luaL_pushresult(&appctx->b);
4302 return 1;
4303 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004304
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004305 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004306 ret = co_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004307
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004308 /* Data not yet available. return yield. */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004309 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01004310 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004311 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004312 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004313
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004314 /* End of data: commit the total strings and return. */
4315 if (ret < 0) {
4316 luaL_pushresult(&appctx->b);
4317 return 1;
4318 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004319
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004320 /* Ensure that the block 2 length is usable. */
4321 if (ret == 1)
4322 len2 = 0;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004323
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004324 /* Copy the fisrt block caping to the length required. */
4325 if (len1 > appctx->appctx->ctx.hlua_apphttp.left_bytes)
4326 len1 = appctx->appctx->ctx.hlua_apphttp.left_bytes;
4327 luaL_addlstring(&appctx->b, blk1, len1);
4328 appctx->appctx->ctx.hlua_apphttp.left_bytes -= len1;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004329
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004330 /* Copy the second block. */
4331 if (len2 > appctx->appctx->ctx.hlua_apphttp.left_bytes)
4332 len2 = appctx->appctx->ctx.hlua_apphttp.left_bytes;
4333 luaL_addlstring(&appctx->b, blk2, len2);
4334 appctx->appctx->ctx.hlua_apphttp.left_bytes -= len2;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004335
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004336 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004337 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004338 luaL_pushresult(&appctx->b);
4339 return 1;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004340}
4341
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004342/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004343__LJMP static int hlua_applet_http_getline(lua_State *L)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004344{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004345 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004346
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004347 /* Initialise the string catenation. */
4348 luaL_buffinit(L, &appctx->b);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004349
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004350 if (IS_HTX_STRM(si_strm(appctx->appctx->owner)))
4351 return MAY_LJMP(hlua_applet_htx_getline_yield(L, 0, 0));
4352 else
4353 return MAY_LJMP(hlua_applet_http_getline_yield(L, 0, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004354}
4355
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004356/* If expected data not yet available, it returns a yield. This function
4357 * consumes the data in the buffer. It returns a string containing the
4358 * data. This string can be empty.
4359 */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004360__LJMP static int hlua_applet_htx_recv_yield(lua_State *L, int status, lua_KContext ctx)
4361{
4362 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4363 struct stream_interface *si = appctx->appctx->owner;
4364 struct channel *req = si_oc(si);
4365 struct htx *htx;
4366 struct htx_blk *blk;
4367 size_t count;
4368 int len;
4369
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004370 htx = htx_from_buf(&req->buf);
4371 len = MAY_LJMP(luaL_checkinteger(L, 2));
4372 count = co_data(req);
Christopher Faulet29f17582019-05-23 11:03:26 +02004373 blk = htx_get_head_blk(htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004374 while (count && len && blk) {
4375 enum htx_blk_type type = htx_get_blk_type(blk);
4376 uint32_t sz = htx_get_blksz(blk);
4377 struct ist v;
4378 uint32_t vlen;
4379
Christopher Faulete461e342018-12-18 16:43:35 +01004380 if (type == HTX_BLK_EOM) {
4381 len = 0;
4382 break;
4383 }
4384
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004385 vlen = sz;
4386 if (len > 0 && vlen > len)
4387 vlen = len;
4388 if (vlen > count) {
4389 if (type != HTX_BLK_DATA)
4390 break;
4391 vlen = count;
4392 }
4393
4394 switch (type) {
4395 case HTX_BLK_UNUSED:
4396 break;
4397
4398 case HTX_BLK_DATA:
4399 v = htx_get_blk_value(htx, blk);
4400 luaL_addlstring(&appctx->b, v.ptr, vlen);
4401 break;
4402
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004403 case HTX_BLK_TLR:
4404 case HTX_BLK_EOM:
4405 len = 0;
4406 break;
4407
4408 default:
4409 break;
4410 }
4411
4412 co_set_data(req, co_data(req) - vlen);
4413 count -= vlen;
4414 if (len > 0)
4415 len -= vlen;
4416 if (sz == vlen)
4417 blk = htx_remove_blk(htx, blk);
4418 else {
4419 htx_cut_data_blk(htx, blk, vlen);
4420 break;
4421 }
4422 }
4423
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004424 htx_to_buf(htx, &req->buf);
4425
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004426 /* If we are no other data available, yield waiting for new data. */
4427 if (len) {
4428 if (len > 0) {
4429 lua_pushinteger(L, len);
4430 lua_replace(L, 2);
4431 }
4432 si_cant_get(si);
4433 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_htx_recv_yield, TICK_ETERNITY, 0));
4434 }
4435
4436 /* return the result. */
4437 luaL_pushresult(&appctx->b);
4438 return 1;
4439}
4440
4441/* If expected data not yet available, it returns a yield. This function
4442 * consumes the data in the buffer. It returns a string containing the
4443 * data. This string can be empty.
4444 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004445__LJMP static int hlua_applet_http_recv_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004446{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004447 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4448 struct stream_interface *si = appctx->appctx->owner;
4449 int len = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004450 int ret;
Willy Tarreau206ba832018-06-14 15:27:31 +02004451 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02004452 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02004453 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02004454 size_t len2;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004455
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004456 /* Read the maximum amount of data available. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004457 ret = co_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004458
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004459 /* Data not yet available. return yield. */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004460 if (ret == 0) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01004461 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004462 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004463 }
4464
4465 /* End of data: commit the total strings and return. */
4466 if (ret < 0) {
4467 luaL_pushresult(&appctx->b);
4468 return 1;
4469 }
4470
4471 /* Ensure that the block 2 length is usable. */
4472 if (ret == 1)
4473 len2 = 0;
4474
4475 /* Copy the fisrt block caping to the length required. */
4476 if (len1 > len)
4477 len1 = len;
4478 luaL_addlstring(&appctx->b, blk1, len1);
4479 len -= len1;
4480
4481 /* Copy the second block. */
4482 if (len2 > len)
4483 len2 = len;
4484 luaL_addlstring(&appctx->b, blk2, len2);
4485 len -= len2;
4486
4487 /* Consume input channel output buffer data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004488 co_skip(si_oc(si), len1 + len2);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004489 if (appctx->appctx->ctx.hlua_apphttp.left_bytes != -1)
4490 appctx->appctx->ctx.hlua_apphttp.left_bytes -= len;
4491
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004492 /* If we are no other data available, yield waiting for new data. */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004493 if (len > 0) {
4494 lua_pushinteger(L, len);
4495 lua_replace(L, 2);
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01004496 si_cant_get(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004497 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004498 }
4499
4500 /* return the result. */
4501 luaL_pushresult(&appctx->b);
4502 return 1;
4503}
4504
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004505/* Check arguments for the function "hlua_channel_get_yield". */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004506__LJMP static int hlua_applet_http_recv(lua_State *L)
4507{
4508 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4509 int len = -1;
4510
4511 /* Check arguments. */
4512 if (lua_gettop(L) > 2)
4513 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
4514 if (lua_gettop(L) >= 2) {
4515 len = MAY_LJMP(luaL_checkinteger(L, 2));
4516 lua_pop(L, 1);
4517 }
4518
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004519 if (IS_HTX_STRM(si_strm(appctx->appctx->owner))) {
4520 /* HTX version */
4521 lua_pushinteger(L, len);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004522
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004523 /* Initialise the string catenation. */
4524 luaL_buffinit(L, &appctx->b);
4525
4526 return MAY_LJMP(hlua_applet_htx_recv_yield(L, 0, 0));
4527 }
4528 else {
4529 /* Legacy HTTP version */
4530 /* Check the required length */
4531 if (len == -1 || len > appctx->appctx->ctx.hlua_apphttp.left_bytes)
4532 len = appctx->appctx->ctx.hlua_apphttp.left_bytes;
4533 lua_pushinteger(L, len);
4534
4535 /* Initialise the string catenation. */
4536 luaL_buffinit(L, &appctx->b);
4537
4538 return MAY_LJMP(hlua_applet_http_recv_yield(L, 0, 0));
4539 }
4540}
4541
4542/* Append data in the output side of the buffer. This data is immediately
4543 * sent. The function returns the amount of data written. If the buffer
4544 * cannot contain the data, the function yields. The function returns -1
4545 * if the channel is closed.
4546 */
4547__LJMP static int hlua_applet_htx_send_yield(lua_State *L, int status, lua_KContext ctx)
4548{
4549 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4550 struct stream_interface *si = appctx->appctx->owner;
4551 struct channel *res = si_ic(si);
4552 struct htx *htx = htx_from_buf(&res->buf);
4553 const char *data;
4554 size_t len;
4555 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4556 int max;
4557
Christopher Faulet9060fc02019-07-03 11:39:30 +02004558 max = htx_get_max_blksz(htx, channel_htx_recv_max(res, htx));
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004559 if (!max)
4560 goto snd_yield;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004561
4562 data = MAY_LJMP(luaL_checklstring(L, 2, &len));
4563
4564 /* Get the max amount of data which can write as input in the channel. */
4565 if (max > (len - l))
4566 max = len - l;
4567
4568 /* Copy data. */
Willy Tarreau0a7ef022019-05-28 10:30:11 +02004569 max = htx_add_data(htx, ist2(data + l, max));
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004570 channel_add_input(res, max);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004571
4572 /* update counters. */
4573 l += max;
4574 lua_pop(L, 1);
4575 lua_pushinteger(L, l);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004576
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004577 /* If some data is not send, declares the situation to the
4578 * applet, and returns a yield.
4579 */
4580 if (l < len) {
Christopher Faulet4b0e9b22019-01-09 12:16:58 +01004581 snd_yield:
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004582 htx_to_buf(htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004583 si_rx_room_blk(si);
4584 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_htx_send_yield, TICK_ETERNITY, 0));
4585 }
4586
Christopher Faulet0ae79d02019-02-27 21:36:59 +01004587 htx_to_buf(htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004588 return 1;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004589}
4590
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08004591/* Append data in the output side of the buffer. This data is immediately
4592 * sent. The function returns the amount of data written. If the buffer
4593 * cannot contain the data, the function yields. The function returns -1
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004594 * if the channel is closed.
4595 */
4596__LJMP static int hlua_applet_http_send_yield(lua_State *L, int status, lua_KContext ctx)
4597{
4598 size_t len;
4599 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4600 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
4601 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4602 struct stream_interface *si = appctx->appctx->owner;
4603 struct channel *chn = si_ic(si);
4604 int max;
4605
4606 /* Get the max amount of data which can write as input in the channel. */
4607 max = channel_recv_max(chn);
4608 if (max > (len - l))
4609 max = len - l;
4610
4611 /* Copy data. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004612 ci_putblk(chn, str + l, max);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004613
4614 /* update counters. */
4615 l += max;
4616 lua_pop(L, 1);
4617 lua_pushinteger(L, l);
4618
4619 /* If some data is not send, declares the situation to the
4620 * applet, and returns a yield.
4621 */
4622 if (l < len) {
Willy Tarreaudb398432018-11-15 11:08:52 +01004623 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004624 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004625 }
4626
4627 return 1;
4628}
4629
4630/* Just a wraper of "hlua_applet_send_yield". This wrapper permits
4631 * yield the LUA process, and resume it without checking the
4632 * input arguments.
4633 */
4634__LJMP static int hlua_applet_http_send(lua_State *L)
4635{
4636 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004637
4638 /* We want to send some data. Headers must be sent. */
4639 if (!(appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
4640 hlua_pusherror(L, "Lua: 'send' you must call start_response() before sending data.");
4641 WILL_LJMP(lua_error(L));
4642 }
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004643
4644 if (IS_HTX_STRM(si_strm(appctx->appctx->owner))) {
4645 /* HTX version */
4646 /* This interger is used for followinf the amount of data sent. */
4647 lua_pushinteger(L, 0);
4648
4649 return MAY_LJMP(hlua_applet_htx_send_yield(L, 0, 0));
4650 }
4651 else {
4652 /* Legacy HTTP version */
4653 size_t len;
4654 char hex[10];
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004655
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004656 MAY_LJMP(luaL_checklstring(L, 2, &len));
4657
4658 /* If transfer encoding chunked is selected, we surround the data
4659 * by chunk data.
4660 */
4661 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_CHUNKED) {
4662 snprintf(hex, 9, "%x", (unsigned int)len);
4663 lua_pushfstring(L, "%s\r\n", hex);
4664 lua_insert(L, 2); /* swap the last 2 entries. */
4665 lua_pushstring(L, "\r\n");
4666 lua_concat(L, 3);
4667 }
4668
4669 /* This interger is used for followinf the amount of data sent. */
4670 lua_pushinteger(L, 0);
4671
4672 return MAY_LJMP(hlua_applet_http_send_yield(L, 0, 0));
4673 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004674}
4675
4676__LJMP static int hlua_applet_http_addheader(lua_State *L)
4677{
4678 const char *name;
4679 int ret;
4680
4681 MAY_LJMP(hlua_checkapplet_http(L, 1));
4682 name = MAY_LJMP(luaL_checkstring(L, 2));
4683 MAY_LJMP(luaL_checkstring(L, 3));
4684
4685 /* Push in the stack the "response" entry. */
4686 ret = lua_getfield(L, 1, "response");
4687 if (ret != LUA_TTABLE) {
4688 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response'] "
4689 "is expected as an array. %s found", lua_typename(L, ret));
4690 WILL_LJMP(lua_error(L));
4691 }
4692
4693 /* check if the header is already registered if it is not
4694 * the case, register it.
4695 */
4696 ret = lua_getfield(L, -1, name);
4697 if (ret == LUA_TNIL) {
4698
4699 /* Entry not found. */
4700 lua_pop(L, 1); /* remove the nil. The "response" table is the top of the stack. */
4701
4702 /* Insert the new header name in the array in the top of the stack.
4703 * It left the new array in the top of the stack.
4704 */
4705 lua_newtable(L);
4706 lua_pushvalue(L, 2);
4707 lua_pushvalue(L, -2);
4708 lua_settable(L, -4);
4709
4710 } else if (ret != LUA_TTABLE) {
4711
4712 /* corruption error. */
4713 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response']['%s'] "
4714 "is expected as an array. %s found", name, lua_typename(L, ret));
4715 WILL_LJMP(lua_error(L));
4716 }
4717
4718 /* Now the top od thestack is an array of values. We push
4719 * the header value as new entry.
4720 */
4721 lua_pushvalue(L, 3);
4722 ret = lua_rawlen(L, -2);
4723 lua_rawseti(L, -2, ret + 1);
4724 lua_pushboolean(L, 1);
4725 return 1;
4726}
4727
4728__LJMP static int hlua_applet_http_status(lua_State *L)
4729{
4730 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4731 int status = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004732 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004733
4734 if (status < 100 || status > 599) {
4735 lua_pushboolean(L, 0);
4736 return 1;
4737 }
4738
4739 appctx->appctx->ctx.hlua_apphttp.status = status;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004740 appctx->appctx->ctx.hlua_apphttp.reason = reason;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004741 lua_pushboolean(L, 1);
4742 return 1;
4743}
4744
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004745
4746__LJMP static int hlua_applet_htx_send_response(lua_State *L)
4747{
4748 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4749 struct stream_interface *si = appctx->appctx->owner;
4750 struct channel *res = si_ic(si);
4751 struct htx *htx;
4752 struct htx_sl *sl;
4753 struct h1m h1m;
4754 const char *status, *reason;
4755 const char *name, *value;
4756 size_t nlen, vlen;
4757 unsigned int flags;
4758
4759 /* Send the message at once. */
4760 htx = htx_from_buf(&res->buf);
4761 h1m_init_res(&h1m);
4762
4763 /* Use the same http version than the request. */
4764 status = ultoa_r(appctx->appctx->ctx.hlua_apphttp.status, trash.area, trash.size);
4765 reason = appctx->appctx->ctx.hlua_apphttp.reason;
4766 if (reason == NULL)
4767 reason = http_get_reason(appctx->appctx->ctx.hlua_apphttp.status);
4768 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11) {
4769 flags = (HTX_SL_F_IS_RESP|HTX_SL_F_VER_11);
4770 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.1"), ist(status), ist(reason));
4771 }
4772 else {
4773 flags = HTX_SL_F_IS_RESP;
4774 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, ist("HTTP/1.0"), ist(status), ist(reason));
4775 }
4776 if (!sl) {
4777 hlua_pusherror(L, "Lua applet http '%s': Failed to create response.\n",
4778 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4779 WILL_LJMP(lua_error(L));
4780 }
4781 sl->info.res.status = appctx->appctx->ctx.hlua_apphttp.status;
4782
4783 /* Get the array associated to the field "response" in the object AppletHTTP. */
4784 lua_pushvalue(L, 0);
4785 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
4786 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
4787 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4788 WILL_LJMP(lua_error(L));
4789 }
4790
4791 /* Browse the list of headers. */
4792 lua_pushnil(L);
4793 while(lua_next(L, -2) != 0) {
4794 /* We expect a string as -2. */
4795 if (lua_type(L, -2) != LUA_TSTRING) {
4796 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
4797 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4798 lua_typename(L, lua_type(L, -2)));
4799 WILL_LJMP(lua_error(L));
4800 }
4801 name = lua_tolstring(L, -2, &nlen);
4802
4803 /* We expect an array as -1. */
4804 if (lua_type(L, -1) != LUA_TTABLE) {
4805 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'] element must be an table. got %s.\n",
4806 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4807 name,
4808 lua_typename(L, lua_type(L, -1)));
4809 WILL_LJMP(lua_error(L));
4810 }
4811
4812 /* Browse the table who is on the top of the stack. */
4813 lua_pushnil(L);
4814 while(lua_next(L, -2) != 0) {
4815 int id;
4816
4817 /* We expect a number as -2. */
4818 if (lua_type(L, -2) != LUA_TNUMBER) {
4819 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][] element must be a number. got %s.\n",
4820 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4821 name,
4822 lua_typename(L, lua_type(L, -2)));
4823 WILL_LJMP(lua_error(L));
4824 }
4825 id = lua_tointeger(L, -2);
4826
4827 /* We expect a string as -2. */
4828 if (lua_type(L, -1) != LUA_TSTRING) {
4829 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][%d] element must be a string. got %s.\n",
4830 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4831 name, id,
4832 lua_typename(L, lua_type(L, -1)));
4833 WILL_LJMP(lua_error(L));
4834 }
4835 value = lua_tolstring(L, -1, &vlen);
4836
4837 /* Simple Protocol checks. */
4838 if (isteqi(ist2(name, nlen), ist("transfer-encoding")))
4839 h1_parse_xfer_enc_header(&h1m, ist2(name, nlen));
4840 else if (isteqi(ist2(name, nlen), ist("content-length"))) {
4841 struct ist v = ist2(value, vlen);
4842 int ret;
4843
4844 ret = h1_parse_cont_len_header(&h1m, &v);
4845 if (ret < 0) {
4846 hlua_pusherror(L, "Lua applet http '%s': Invalid '%s' header.\n",
4847 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4848 name);
4849 WILL_LJMP(lua_error(L));
4850 }
4851 else if (ret == 0)
4852 goto next; /* Skip it */
4853 }
4854
4855 /* Add a new header */
4856 if (!htx_add_header(htx, ist2(name, nlen), ist2(value, vlen))) {
4857 hlua_pusherror(L, "Lua applet http '%s': Failed to add header '%s' in the response.\n",
4858 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4859 name);
4860 WILL_LJMP(lua_error(L));
4861 }
4862 next:
4863 /* Remove the array from the stack, and get next element with a remaining string. */
4864 lua_pop(L, 1);
4865 }
4866
4867 /* Remove the array from the stack, and get next element with a remaining string. */
4868 lua_pop(L, 1);
4869 }
4870
4871 if (h1m.flags & H1_MF_CHNK)
4872 h1m.flags &= ~H1_MF_CLEN;
4873 if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
4874 h1m.flags |= H1_MF_XFER_LEN;
4875
4876 /* Uset HTX start-line flags */
4877 if (h1m.flags & H1_MF_XFER_ENC)
4878 flags |= HTX_SL_F_XFER_ENC;
4879 if (h1m.flags & H1_MF_XFER_LEN) {
4880 flags |= HTX_SL_F_XFER_LEN;
4881 if (h1m.flags & H1_MF_CHNK)
4882 flags |= HTX_SL_F_CHNK;
4883 else if (h1m.flags & H1_MF_CLEN)
4884 flags |= HTX_SL_F_CLEN;
4885 if (h1m.body_len == 0)
4886 flags |= HTX_SL_F_BODYLESS;
4887 }
4888 sl->flags |= flags;
4889
4890 /* If we dont have a content-length set, and the HTTP version is 1.1
4891 * and the status code implies the presence of a message body, we must
4892 * announce a transfer encoding chunked. This is required by haproxy
4893 * for the keepalive compliance. If the applet annouces a transfer-encoding
4894 * chunked itslef, don't do anything.
4895 */
4896 if ((flags & (HTX_SL_F_VER_11|HTX_SL_F_XFER_LEN)) == HTX_SL_F_VER_11 &&
4897 appctx->appctx->ctx.hlua_apphttp.status >= 200 &&
4898 appctx->appctx->ctx.hlua_apphttp.status != 204 &&
4899 appctx->appctx->ctx.hlua_apphttp.status != 304) {
4900 /* Add a new header */
4901 sl->flags |= (HTX_SL_F_XFER_ENC|H1_MF_CHNK|H1_MF_XFER_LEN);
4902 if (!htx_add_header(htx, ist("transfer-encoding"), ist("chunked"))) {
4903 hlua_pusherror(L, "Lua applet http '%s': Failed to add header 'transfer-encoding' in the response.\n",
4904 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4905 WILL_LJMP(lua_error(L));
4906 }
4907 }
4908
4909 /* Finalize headers. */
4910 if (!htx_add_endof(htx, HTX_BLK_EOH)) {
4911 hlua_pusherror(L, "Lua applet http '%s': Failed create the response.\n",
4912 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4913 WILL_LJMP(lua_error(L));
4914 }
4915
4916 if (htx_used_space(htx) > b_size(&res->buf) - global.tune.maxrewrite) {
4917 b_reset(&res->buf);
4918 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4919 WILL_LJMP(lua_error(L));
4920 }
4921
4922 htx_to_buf(htx, &res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01004923 channel_add_input(res, htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004924
4925 /* Headers sent, set the flag. */
4926 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4927 return 0;
4928
4929}
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004930/* We will build the status line and the headers of the HTTP response.
4931 * We will try send at once if its not possible, we give back the hand
4932 * waiting for more room.
4933 */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004934__LJMP static int hlua_applet_htx_start_response_yield(lua_State *L, int status, lua_KContext ctx)
4935{
4936 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4937 struct stream_interface *si = appctx->appctx->owner;
4938 struct channel *res = si_ic(si);
4939
4940 if (co_data(res)) {
4941 si_rx_room_blk(si);
4942 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_htx_start_response_yield, TICK_ETERNITY, 0));
4943 }
4944 return MAY_LJMP(hlua_applet_htx_send_response(L));
4945}
4946
4947
4948__LJMP static int hlua_applet_htx_start_response(lua_State *L)
4949{
4950 return MAY_LJMP(hlua_applet_htx_start_response_yield(L, 0, 0));
4951}
4952
4953/* We will build the status line and the headers of the HTTP response.
4954 * We will try send at once if its not possible, we give back the hand
4955 * waiting for more room.
4956 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004957__LJMP static int hlua_applet_http_start_response_yield(lua_State *L, int status, lua_KContext ctx)
4958{
4959 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4960 struct stream_interface *si = appctx->appctx->owner;
4961 struct channel *chn = si_ic(si);
4962 int ret;
4963 size_t len;
4964 const char *msg;
4965
4966 /* Get the message as the first argument on the stack. */
4967 msg = MAY_LJMP(luaL_checklstring(L, 2, &len));
4968
4969 /* Send the message at once. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02004970 ret = ci_putblk(chn, msg, len);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004971
4972 /* if ret == -2 or -3 the channel closed or the message si too
4973 * big for the buffers.
4974 */
4975 if (ret == -2 || ret == -3) {
4976 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4977 WILL_LJMP(lua_error(L));
4978 }
4979
4980 /* If ret is -1, we dont have room in the buffer, so we yield. */
4981 if (ret == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01004982 si_rx_room_blk(si);
Willy Tarreau9635e032018-10-16 17:52:55 +02004983 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_start_response_yield, TICK_ETERNITY, 0));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004984 }
4985
4986 /* Headers sent, set the flag. */
4987 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4988 return 0;
4989}
4990
4991__LJMP static int hlua_applet_http_start_response(lua_State *L)
4992{
Christopher Faulet9c832fc2018-12-14 13:34:05 +01004993 struct buffer *tmp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004994 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004995 const char *name;
Willy Tarreaua3294632017-08-23 11:24:47 +02004996 size_t name_len;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004997 const char *value;
Willy Tarreaua3294632017-08-23 11:24:47 +02004998 size_t value_len;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004999 int id;
Willy Tarreauc9f4ea02017-08-23 09:32:06 +02005000 long long hdr_contentlength = -1;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005001 int hdr_chunked = 0;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01005002 const char *reason;
5003
5004 if (IS_HTX_STRM(si_strm(appctx->appctx->owner)))
5005 return MAY_LJMP(hlua_applet_htx_start_response(L));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005006
Christopher Faulet9c832fc2018-12-14 13:34:05 +01005007 reason = appctx->appctx->ctx.hlua_apphttp.reason;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005008 if (reason == NULL)
Willy Tarreau04f1e2d2018-09-10 18:04:24 +02005009 reason = http_get_reason(appctx->appctx->ctx.hlua_apphttp.status);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005010
Christopher Faulet9c832fc2018-12-14 13:34:05 +01005011 tmp = get_trash_chunk();
5012
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005013 /* Use the same http version than the request. */
5014 chunk_appendf(tmp, "HTTP/1.%c %d %s\r\n",
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01005015 appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11 ? '1' : '0',
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005016 appctx->appctx->ctx.hlua_apphttp.status,
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005017 reason);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005018
5019 /* Get the array associated to the field "response" in the object AppletHTTP. */
5020 lua_pushvalue(L, 0);
5021 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
5022 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
5023 appctx->appctx->rule->arg.hlua_rule->fcn.name);
5024 WILL_LJMP(lua_error(L));
5025 }
5026
5027 /* Browse the list of headers. */
5028 lua_pushnil(L);
5029 while(lua_next(L, -2) != 0) {
5030
5031 /* We expect a string as -2. */
5032 if (lua_type(L, -2) != LUA_TSTRING) {
5033 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
5034 appctx->appctx->rule->arg.hlua_rule->fcn.name,
5035 lua_typename(L, lua_type(L, -2)));
5036 WILL_LJMP(lua_error(L));
5037 }
Willy Tarreaua3294632017-08-23 11:24:47 +02005038 name = lua_tolstring(L, -2, &name_len);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005039
5040 /* We expect an array as -1. */
5041 if (lua_type(L, -1) != LUA_TTABLE) {
5042 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'] element must be an table. got %s.\n",
5043 appctx->appctx->rule->arg.hlua_rule->fcn.name,
5044 name,
5045 lua_typename(L, lua_type(L, -1)));
5046 WILL_LJMP(lua_error(L));
5047 }
5048
5049 /* Browse the table who is on the top of the stack. */
5050 lua_pushnil(L);
5051 while(lua_next(L, -2) != 0) {
5052
5053 /* We expect a number as -2. */
5054 if (lua_type(L, -2) != LUA_TNUMBER) {
5055 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][] element must be a number. got %s.\n",
5056 appctx->appctx->rule->arg.hlua_rule->fcn.name,
5057 name,
5058 lua_typename(L, lua_type(L, -2)));
5059 WILL_LJMP(lua_error(L));
5060 }
5061 id = lua_tointeger(L, -2);
5062
5063 /* We expect a string as -2. */
5064 if (lua_type(L, -1) != LUA_TSTRING) {
5065 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][%d] element must be a string. got %s.\n",
5066 appctx->appctx->rule->arg.hlua_rule->fcn.name,
5067 name, id,
5068 lua_typename(L, lua_type(L, -1)));
5069 WILL_LJMP(lua_error(L));
5070 }
Willy Tarreaua3294632017-08-23 11:24:47 +02005071 value = lua_tolstring(L, -1, &value_len);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005072
5073 /* Catenate a new header. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005074 if (tmp->data + name_len + 2 + value_len + 2 < tmp->size) {
5075 memcpy(tmp->area + tmp->data, name, name_len);
5076 tmp->data += name_len;
5077 tmp->area[tmp->data++] = ':';
5078 tmp->area[tmp->data++] = ' ';
Willy Tarreaua3294632017-08-23 11:24:47 +02005079
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005080 memcpy(tmp->area + tmp->data, value,
5081 value_len);
5082 tmp->data += value_len;
5083 tmp->area[tmp->data++] = '\r';
5084 tmp->area[tmp->data++] = '\n';
Willy Tarreaua3294632017-08-23 11:24:47 +02005085 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005086
5087 /* Protocol checks. */
5088
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005089 /* Copy the header content length. The length conversion
Willy Tarreauc9f4ea02017-08-23 09:32:06 +02005090 * is done without control. If it contains a bad value,
5091 * the content-length remains negative so that we can
5092 * switch to either chunked encoding or close.
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005093 */
Willy Tarreaua3294632017-08-23 11:24:47 +02005094 if (name_len == 14 && strcasecmp("content-length", name) == 0)
Willy Tarreauc9f4ea02017-08-23 09:32:06 +02005095 strl2llrc(value, strlen(value), &hdr_contentlength);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005096
5097 /* Check if the client annouces a transfer-encoding chunked it self. */
Willy Tarreaua3294632017-08-23 11:24:47 +02005098 if (name_len == 17 && value_len == 7 &&
5099 strcasecmp("transfer-encoding", name) == 0 &&
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005100 strcasecmp("chunked", value) == 0)
5101 hdr_chunked = 1;
5102
5103 /* Remove the array from the stack, and get next element with a remaining string. */
5104 lua_pop(L, 1);
5105 }
5106
5107 /* Remove the array from the stack, and get next element with a remaining string. */
5108 lua_pop(L, 1);
5109 }
5110
Willy Tarreau06c75fe2017-08-23 09:10:38 +02005111 /* If we dont have a content-length set, and the HTTP version is 1.1
5112 * and the status code implies the presence of a message body, we must
5113 * announce a transfer encoding chunked. This is required by haproxy
5114 * for the keepalive compliance. If the applet annouces a transfer-encoding
5115 * chunked itslef, don't do anything.
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005116 */
Willy Tarreauc9f4ea02017-08-23 09:32:06 +02005117 if (hdr_contentlength < 0 && hdr_chunked == 0 &&
Willy Tarreau06c75fe2017-08-23 09:10:38 +02005118 (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11) &&
5119 appctx->appctx->ctx.hlua_apphttp.status >= 200 &&
5120 appctx->appctx->ctx.hlua_apphttp.status != 204 &&
5121 appctx->appctx->ctx.hlua_apphttp.status != 304) {
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005122 chunk_appendf(tmp, "Transfer-encoding: chunked\r\n");
5123 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_CHUNKED;
5124 }
5125
5126 /* Finalize headers. */
5127 chunk_appendf(tmp, "\r\n");
5128
5129 /* Remove the last entry and the array of headers */
5130 lua_pop(L, 2);
5131
5132 /* Push the headers block. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005133 lua_pushlstring(L, tmp->area, tmp->data);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005134
5135 return MAY_LJMP(hlua_applet_http_start_response_yield(L, 0, 0));
5136}
5137
5138/*
5139 *
5140 *
5141 * Class HTTP
5142 *
5143 *
5144 */
5145
5146/* Returns a struct hlua_txn if the stack entry "ud" is
5147 * a class stream, otherwise it throws an error.
5148 */
5149__LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud)
5150{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005151 return MAY_LJMP(hlua_checkudata(L, ud, class_http_ref));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005152}
5153
5154/* This function creates and push in the stack a HTTP object
5155 * according with a current TXN.
5156 */
5157static int hlua_http_new(lua_State *L, struct hlua_txn *txn)
5158{
5159 struct hlua_txn *htxn;
5160
5161 /* Check stack size. */
5162 if (!lua_checkstack(L, 3))
5163 return 0;
5164
5165 /* Create the object: obj[0] = userdata.
5166 * Note that the base of the Converters object is the
5167 * same than the TXN object.
5168 */
5169 lua_newtable(L);
5170 htxn = lua_newuserdata(L, sizeof(*htxn));
5171 lua_rawseti(L, -2, 0);
5172
5173 htxn->s = txn->s;
5174 htxn->p = txn->p;
Christopher Faulet256b69a2019-05-23 11:14:21 +02005175 htxn->dir = txn->dir;
5176 htxn->flags = txn->flags;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005177
5178 /* Pop a class stream metatable and affect it to the table. */
5179 lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref);
5180 lua_setmetatable(L, -2);
5181
5182 return 1;
5183}
5184
5185/* This function creates ans returns an array of HTTP headers.
5186 * This function does not fails. It is used as wrapper with the
5187 * 2 following functions.
5188 */
5189__LJMP static int hlua_http_get_headers(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg)
5190{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005191 /* Create the table. */
5192 lua_newtable(L);
5193
5194 if (!htxn->s->txn)
5195 return 1;
5196
Christopher Faulet724a12c2018-12-13 22:12:15 +01005197 if (IS_HTX_STRM(htxn->s)) {
5198 /* HTX version */
5199 struct htx *htx = htxbuf(&msg->chn->buf);
5200 int32_t pos;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005201
Christopher Fauleta3f15502019-05-13 15:27:23 +02005202 for (pos = htx_get_first(htx); pos != -1; pos = htx_get_next(htx, pos)) {
Christopher Faulet724a12c2018-12-13 22:12:15 +01005203 struct htx_blk *blk = htx_get_blk(htx, pos);
5204 enum htx_blk_type type = htx_get_blk_type(blk);
5205 struct ist n, v;
5206 int len;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005207
Christopher Faulet724a12c2018-12-13 22:12:15 +01005208 if (type == HTX_BLK_HDR) {
5209 n = htx_get_blk_name(htx,blk);
5210 v = htx_get_blk_value(htx, blk);
5211 }
5212 else if (type == HTX_BLK_EOH)
5213 break;
5214 else
5215 continue;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005216
Christopher Faulet724a12c2018-12-13 22:12:15 +01005217 /* Check for existing entry:
5218 * assume that the table is on the top of the stack, and
5219 * push the key in the stack, the function lua_gettable()
5220 * perform the lookup.
5221 */
5222 lua_pushlstring(L, n.ptr, n.len);
5223 lua_gettable(L, -2);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005224
Christopher Faulet724a12c2018-12-13 22:12:15 +01005225 switch (lua_type(L, -1)) {
5226 case LUA_TNIL:
5227 /* Table not found, create it. */
5228 lua_pop(L, 1); /* remove the nil value. */
5229 lua_pushlstring(L, n.ptr, n.len); /* push the header name as key. */
5230 lua_newtable(L); /* create and push empty table. */
5231 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
5232 lua_rawseti(L, -2, 0); /* index header value (pop it). */
5233 lua_rawset(L, -3); /* index new table with header name (pop the values). */
5234 break;
5235
5236 case LUA_TTABLE:
5237 /* Entry found: push the value in the table. */
5238 len = lua_rawlen(L, -1);
5239 lua_pushlstring(L, v.ptr, v.len); /* push header value. */
5240 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
5241 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
5242 break;
5243
5244 default:
5245 /* Other cases are errors. */
5246 hlua_pusherror(L, "internal error during the parsing of headers.");
5247 WILL_LJMP(lua_error(L));
5248 }
5249 }
5250 }
5251 else {
5252 /* Legacy HTTP version */
5253 const char *cur_ptr, *cur_next, *p;
5254 int old_idx, cur_idx;
5255 struct hdr_idx_elem *cur_hdr;
5256 const char *hn, *hv;
5257 int hnl, hvl;
5258 const char *in;
5259 char *out;
5260 int len;
5261
5262 /* Build array of headers. */
5263 old_idx = 0;
5264 cur_next = ci_head(msg->chn) + hdr_idx_first_pos(&htxn->s->txn->hdr_idx);
5265
5266 while (1) {
5267 cur_idx = htxn->s->txn->hdr_idx.v[old_idx].next;
5268 if (!cur_idx)
5269 break;
5270 old_idx = cur_idx;
5271
5272 cur_hdr = &htxn->s->txn->hdr_idx.v[cur_idx];
5273 cur_ptr = cur_next;
5274 cur_next = cur_ptr + cur_hdr->len + cur_hdr->cr + 1;
5275
5276 /* Now we have one full header at cur_ptr of len cur_hdr->len,
5277 * and the next header starts at cur_next. We'll check
5278 * this header in the list as well as against the default
5279 * rule.
5280 */
5281
5282 /* look for ': *'. */
5283 hn = cur_ptr;
5284 for (p = cur_ptr; p < cur_ptr + cur_hdr->len && *p != ':'; p++);
5285 if (p >= cur_ptr+cur_hdr->len)
5286 continue;
5287 hnl = p - hn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005288 p++;
Christopher Faulet724a12c2018-12-13 22:12:15 +01005289 while (p < cur_ptr+cur_hdr->len && ( *p == ' ' || *p == '\t' ))
5290 p++;
5291 if (p >= cur_ptr+cur_hdr->len)
5292 continue;
5293 hv = p;
5294 hvl = cur_ptr+cur_hdr->len-p;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005295
Christopher Faulet724a12c2018-12-13 22:12:15 +01005296 /* Lowercase the key. Don't check the size of trash, it have
5297 * the size of one buffer and the input data contains in one
5298 * buffer.
5299 */
5300 out = trash.area;
5301 for (in=hn; in<hn+hnl; in++, out++)
5302 *out = tolower(*in);
5303 *out = '\0';
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005304
Christopher Faulet724a12c2018-12-13 22:12:15 +01005305 /* Check for existing entry:
5306 * assume that the table is on the top of the stack, and
5307 * push the key in the stack, the function lua_gettable()
5308 * perform the lookup.
5309 */
5310 lua_pushlstring(L, trash.area, hnl);
5311 lua_gettable(L, -2);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005312
Christopher Faulet724a12c2018-12-13 22:12:15 +01005313 switch (lua_type(L, -1)) {
5314 case LUA_TNIL:
5315 /* Table not found, create it. */
5316 lua_pop(L, 1); /* remove the nil value. */
5317 lua_pushlstring(L, trash.area, hnl); /* push the header name as key. */
5318 lua_newtable(L); /* create and push empty table. */
5319 lua_pushlstring(L, hv, hvl); /* push header value. */
5320 lua_rawseti(L, -2, 0); /* index header value (pop it). */
5321 lua_rawset(L, -3); /* index new table with header name (pop the values). */
5322 break;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005323
Christopher Faulet724a12c2018-12-13 22:12:15 +01005324 case LUA_TTABLE:
5325 /* Entry found: push the value in the table. */
5326 len = lua_rawlen(L, -1);
5327 lua_pushlstring(L, hv, hvl); /* push header value. */
5328 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
5329 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
5330 break;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005331
Christopher Faulet724a12c2018-12-13 22:12:15 +01005332 default:
5333 /* Other cases are errors. */
5334 hlua_pusherror(L, "internal error during the parsing of headers.");
5335 WILL_LJMP(lua_error(L));
5336 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005337 }
5338 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005339 return 1;
5340}
5341
5342__LJMP static int hlua_http_req_get_headers(lua_State *L)
5343{
5344 struct hlua_txn *htxn;
5345
5346 MAY_LJMP(check_args(L, 1, "req_get_headers"));
5347 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5348
5349 return hlua_http_get_headers(L, htxn, &htxn->s->txn->req);
5350}
5351
5352__LJMP static int hlua_http_res_get_headers(lua_State *L)
5353{
5354 struct hlua_txn *htxn;
5355
5356 MAY_LJMP(check_args(L, 1, "res_get_headers"));
5357 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5358
5359 return hlua_http_get_headers(L, htxn, &htxn->s->txn->rsp);
5360}
5361
5362/* This function replace full header, or just a value in
5363 * the request or in the response. It is a wrapper fir the
5364 * 4 following functions.
5365 */
5366__LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct hlua_txn *htxn,
5367 struct http_msg *msg, int action)
5368{
5369 size_t name_len;
5370 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5371 const char *reg = MAY_LJMP(luaL_checkstring(L, 3));
5372 const char *value = MAY_LJMP(luaL_checkstring(L, 4));
Dragan Dosen26743032019-04-30 15:54:36 +02005373 struct my_regex *re;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005374
Dragan Dosen26743032019-04-30 15:54:36 +02005375 if (!(re = regex_comp(reg, 1, 1, NULL)))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005376 WILL_LJMP(luaL_argerror(L, 3, "invalid regex"));
5377
Christopher Fauletea418742019-06-17 13:36:06 +02005378 if (IS_HTX_STRM(htxn->s)) {
5379 struct htx *htx = htxbuf(&msg->chn->buf);
5380
5381 htx_transform_header_str(htxn->s, msg->chn, htx, ist2(name, name_len), value, re, action);
5382 }
5383 else
5384 http_transform_header_str(htxn->s, msg, name, name_len, value, re, action);
Dragan Dosen26743032019-04-30 15:54:36 +02005385 regex_free(re);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02005386 return 0;
5387}
5388
5389__LJMP static int hlua_http_req_rep_hdr(lua_State *L)
5390{
5391 struct hlua_txn *htxn;
5392
5393 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
5394 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5395
5396 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->req, ACT_HTTP_REPLACE_HDR));
5397}
5398
5399__LJMP static int hlua_http_res_rep_hdr(lua_State *L)
5400{
5401 struct hlua_txn *htxn;
5402
5403 MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
5404 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5405
5406 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->rsp, ACT_HTTP_REPLACE_HDR));
5407}
5408
5409__LJMP static int hlua_http_req_rep_val(lua_State *L)
5410{
5411 struct hlua_txn *htxn;
5412
5413 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
5414 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5415
5416 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->req, ACT_HTTP_REPLACE_VAL));
5417}
5418
5419__LJMP static int hlua_http_res_rep_val(lua_State *L)
5420{
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005421 struct hlua_txn *htxn;
5422
5423 MAY_LJMP(check_args(L, 4, "res_rep_val"));
5424 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5425
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02005426 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->rsp, ACT_HTTP_REPLACE_VAL));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005427}
5428
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005429/* This function deletes all the occurrences of an header.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005430 * It is a wrapper for the 2 following functions.
5431 */
5432__LJMP static inline int hlua_http_del_hdr(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg)
5433{
5434 size_t len;
5435 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005436
Christopher Faulet724a12c2018-12-13 22:12:15 +01005437 if (IS_HTX_STRM(htxn->s)) {
5438 /* HTX version */
5439 struct htx *htx = htxbuf(&msg->chn->buf);
5440 struct http_hdr_ctx ctx;
5441
5442 ctx.blk = NULL;
5443 while (http_find_header(htx, ist2(name, len), &ctx, 1))
5444 http_remove_header(htx, &ctx);
5445 }
5446 else {
5447 /* Legacy HTTP version */
5448 struct hdr_ctx ctx;
5449 struct http_txn *txn = htxn->s->txn;
5450
5451 ctx.idx = 0;
5452 while (http_find_header2(name, len, ci_head(msg->chn), &txn->hdr_idx, &ctx))
5453 http_remove_header2(msg, &txn->hdr_idx, &ctx);
5454 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005455 return 0;
5456}
5457
5458__LJMP static int hlua_http_req_del_hdr(lua_State *L)
5459{
5460 struct hlua_txn *htxn;
5461
5462 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
5463 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5464
Willy Tarreaueee5b512015-04-03 23:46:31 +02005465 return hlua_http_del_hdr(L, htxn, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005466}
5467
5468__LJMP static int hlua_http_res_del_hdr(lua_State *L)
5469{
5470 struct hlua_txn *htxn;
5471
5472 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
5473 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5474
Willy Tarreaueee5b512015-04-03 23:46:31 +02005475 return hlua_http_del_hdr(L, htxn, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005476}
5477
5478/* This function adds an header. It is a wrapper used by
5479 * the 2 following functions.
5480 */
5481__LJMP static inline int hlua_http_add_hdr(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg)
5482{
5483 size_t name_len;
5484 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
5485 size_t value_len;
5486 const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len));
5487 char *p;
5488
Christopher Faulet724a12c2018-12-13 22:12:15 +01005489 if (IS_HTX_STRM(htxn->s)) {
5490 /* HTX version */
5491 struct htx *htx = htxbuf(&msg->chn->buf);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005492
Christopher Faulet724a12c2018-12-13 22:12:15 +01005493 lua_pushboolean(L, http_add_header(htx, ist2(name, name_len),
5494 ist2(value, value_len)));
5495 }
5496 else {
5497 /* Legacy HTTP version */
5498 /* Check length. */
5499 trash.data = value_len + name_len + 2;
5500 if (trash.data > trash.size)
5501 return 0;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005502
Christopher Faulet724a12c2018-12-13 22:12:15 +01005503 /* Creates the header string. */
5504 p = trash.area;
5505 memcpy(p, name, name_len);
5506 p += name_len;
5507 *p = ':';
5508 p++;
5509 *p = ' ';
5510 p++;
5511 memcpy(p, value, value_len);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005512
Christopher Faulet724a12c2018-12-13 22:12:15 +01005513 lua_pushboolean(L, http_header_add_tail2(msg, &htxn->s->txn->hdr_idx,
5514 trash.area, trash.data) != 0);
5515 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005516 return 0;
5517}
5518
5519__LJMP static int hlua_http_req_add_hdr(lua_State *L)
5520{
5521 struct hlua_txn *htxn;
5522
5523 MAY_LJMP(check_args(L, 3, "req_add_hdr"));
5524 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5525
Willy Tarreaueee5b512015-04-03 23:46:31 +02005526 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005527}
5528
5529__LJMP static int hlua_http_res_add_hdr(lua_State *L)
5530{
5531 struct hlua_txn *htxn;
5532
5533 MAY_LJMP(check_args(L, 3, "res_add_hdr"));
5534 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5535
Willy Tarreaueee5b512015-04-03 23:46:31 +02005536 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005537}
5538
5539static int hlua_http_req_set_hdr(lua_State *L)
5540{
5541 struct hlua_txn *htxn;
5542
5543 MAY_LJMP(check_args(L, 3, "req_set_hdr"));
5544 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5545
Willy Tarreaueee5b512015-04-03 23:46:31 +02005546 hlua_http_del_hdr(L, htxn, &htxn->s->txn->req);
5547 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005548}
5549
5550static int hlua_http_res_set_hdr(lua_State *L)
5551{
5552 struct hlua_txn *htxn;
5553
5554 MAY_LJMP(check_args(L, 3, "res_set_hdr"));
5555 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5556
Willy Tarreaueee5b512015-04-03 23:46:31 +02005557 hlua_http_del_hdr(L, htxn, &htxn->s->txn->rsp);
5558 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005559}
5560
5561/* This function set the method. */
5562static int hlua_http_req_set_meth(lua_State *L)
5563{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005564 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005565 size_t name_len;
5566 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005567
Willy Tarreau987e3fb2015-04-04 01:09:08 +02005568 lua_pushboolean(L, http_replace_req_line(0, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005569 return 1;
5570}
5571
5572/* This function set the method. */
5573static int hlua_http_req_set_path(lua_State *L)
5574{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005575 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005576 size_t name_len;
5577 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02005578
Willy Tarreau987e3fb2015-04-04 01:09:08 +02005579 lua_pushboolean(L, http_replace_req_line(1, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005580 return 1;
5581}
5582
5583/* This function set the query-string. */
5584static int hlua_http_req_set_query(lua_State *L)
5585{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005586 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005587 size_t name_len;
5588 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005589
5590 /* Check length. */
5591 if (name_len > trash.size - 1) {
5592 lua_pushboolean(L, 0);
5593 return 1;
5594 }
5595
5596 /* Add the mark question as prefix. */
5597 chunk_reset(&trash);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005598 trash.area[trash.data++] = '?';
5599 memcpy(trash.area + trash.data, name, name_len);
5600 trash.data += name_len;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005601
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005602 lua_pushboolean(L,
5603 http_replace_req_line(2, trash.area, trash.data, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005604 return 1;
5605}
5606
5607/* This function set the uri. */
5608static int hlua_http_req_set_uri(lua_State *L)
5609{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02005610 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005611 size_t name_len;
5612 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005613
Willy Tarreau987e3fb2015-04-04 01:09:08 +02005614 lua_pushboolean(L, http_replace_req_line(3, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005615 return 1;
5616}
5617
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005618/* This function set the response code & optionally reason. */
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005619static int hlua_http_res_set_status(lua_State *L)
5620{
5621 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
5622 unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005623 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005624
Robin H. Johnson52f5db22017-01-01 13:10:52 -08005625 http_set_status(code, reason, htxn->s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02005626 return 0;
5627}
5628
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005629/*
5630 *
5631 *
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005632 * Class TXN
5633 *
5634 *
5635 */
5636
5637/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02005638 * a class stream, otherwise it throws an error.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005639 */
5640__LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud)
5641{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005642 return MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005643}
5644
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005645__LJMP static int hlua_set_var(lua_State *L)
5646{
5647 struct hlua_txn *htxn;
5648 const char *name;
5649 size_t len;
5650 struct sample smp;
5651
5652 MAY_LJMP(check_args(L, 3, "set_var"));
5653
5654 /* It is useles to retrieve the stream, but this function
5655 * runs only in a stream context.
5656 */
5657 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5658 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5659
5660 /* Converts the third argument in a sample. */
5661 hlua_lua2smp(L, 3, &smp);
5662
5663 /* Store the sample in a variable. */
Willy Tarreau7560dd42016-03-10 16:28:58 +01005664 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01005665 vars_set_by_name(name, len, &smp);
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005666 return 0;
5667}
5668
Christopher Faulet85d79c92016-11-09 16:54:56 +01005669__LJMP static int hlua_unset_var(lua_State *L)
5670{
5671 struct hlua_txn *htxn;
5672 const char *name;
5673 size_t len;
5674 struct sample smp;
5675
5676 MAY_LJMP(check_args(L, 2, "unset_var"));
5677
5678 /* It is useles to retrieve the stream, but this function
5679 * runs only in a stream context.
5680 */
5681 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5682 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5683
5684 /* Unset the variable. */
5685 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
5686 vars_unset_by_name(name, len, &smp);
5687 return 0;
5688}
5689
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005690__LJMP static int hlua_get_var(lua_State *L)
5691{
5692 struct hlua_txn *htxn;
5693 const char *name;
5694 size_t len;
5695 struct sample smp;
5696
5697 MAY_LJMP(check_args(L, 2, "get_var"));
5698
5699 /* It is useles to retrieve the stream, but this function
5700 * runs only in a stream context.
5701 */
5702 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5703 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
5704
Willy Tarreau7560dd42016-03-10 16:28:58 +01005705 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01005706 if (!vars_get_by_name(name, len, &smp)) {
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02005707 lua_pushnil(L);
5708 return 1;
5709 }
5710
5711 return hlua_smp2lua(L, &smp);
5712}
5713
Willy Tarreau59551662015-03-10 14:23:13 +01005714__LJMP static int hlua_set_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005715{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005716 struct hlua *hlua;
5717
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005718 MAY_LJMP(check_args(L, 2, "set_priv"));
5719
Willy Tarreau87b09662015-04-03 00:22:06 +02005720 /* It is useles to retrieve the stream, but this function
5721 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005722 */
5723 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005724 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005725
5726 /* Remove previous value. */
Thierry FOURNIERe068b602017-04-26 13:27:05 +02005727 luaL_unref(L, LUA_REGISTRYINDEX, hlua->Mref);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005728
5729 /* Get and store new value. */
5730 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
5731 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
5732
5733 return 0;
5734}
5735
Willy Tarreau59551662015-03-10 14:23:13 +01005736__LJMP static int hlua_get_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005737{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005738 struct hlua *hlua;
5739
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005740 MAY_LJMP(check_args(L, 1, "get_priv"));
5741
Willy Tarreau87b09662015-04-03 00:22:06 +02005742 /* It is useles to retrieve the stream, but this function
5743 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005744 */
5745 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005746 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01005747
5748 /* Push configuration index in the stack. */
5749 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
5750
5751 return 1;
5752}
5753
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005754/* Create stack entry containing a class TXN. This function
5755 * return 0 if the stack does not contains free slots,
5756 * otherwise it returns 1.
5757 */
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005758static int hlua_txn_new(lua_State *L, struct stream *s, struct proxy *p, int dir, int flags)
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005759{
Willy Tarreaude491382015-04-06 11:04:28 +02005760 struct hlua_txn *htxn;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005761
5762 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005763 if (!lua_checkstack(L, 3))
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005764 return 0;
5765
5766 /* NOTE: The allocation never fails. The failure
5767 * throw an error, and the function never returns.
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08005768 * if the throw is not available, the process is aborted.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005769 */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005770 /* Create the object: obj[0] = userdata. */
5771 lua_newtable(L);
Willy Tarreaude491382015-04-06 11:04:28 +02005772 htxn = lua_newuserdata(L, sizeof(*htxn));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01005773 lua_rawseti(L, -2, 0);
5774
Willy Tarreaude491382015-04-06 11:04:28 +02005775 htxn->s = s;
5776 htxn->p = p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01005777 htxn->dir = dir;
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005778 htxn->flags = flags;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005779
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005780 /* Create the "f" field that contains a list of fetches. */
5781 lua_pushstring(L, "f");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005782 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005783 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005784 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005785
5786 /* Create the "sf" field that contains a list of stringsafe fetches. */
5787 lua_pushstring(L, "sf");
Thierry FOURNIERca988662015-12-20 18:43:03 +01005788 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP | HLUA_F_AS_STRING))
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005789 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005790 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01005791
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005792 /* Create the "c" field that contains a list of converters. */
5793 lua_pushstring(L, "c");
Willy Tarreaude491382015-04-06 11:04:28 +02005794 if (!hlua_converters_new(L, htxn, 0))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005795 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005796 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01005797
5798 /* Create the "sc" field that contains a list of stringsafe converters. */
5799 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01005800 if (!hlua_converters_new(L, htxn, HLUA_F_AS_STRING))
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005801 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005802 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01005803
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005804 /* Create the "req" field that contains the request channel object. */
5805 lua_pushstring(L, "req");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005806 if (!hlua_channel_new(L, &s->req))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005807 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005808 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005809
5810 /* Create the "res" field that contains the response channel object. */
5811 lua_pushstring(L, "res");
Willy Tarreau2a71af42015-03-10 13:51:50 +01005812 if (!hlua_channel_new(L, &s->res))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005813 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005814 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01005815
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005816 /* Creates the HTTP object is the current proxy allows http. */
5817 lua_pushstring(L, "http");
5818 if (p->mode == PR_MODE_HTTP) {
Willy Tarreaude491382015-04-06 11:04:28 +02005819 if (!hlua_http_new(L, htxn))
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005820 return 0;
5821 }
5822 else
5823 lua_pushnil(L);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02005824 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01005825
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01005826 /* Pop a class sesison metatable and affect it to the userdata. */
5827 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref);
5828 lua_setmetatable(L, -2);
5829
5830 return 1;
5831}
5832
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005833__LJMP static int hlua_txn_deflog(lua_State *L)
5834{
5835 const char *msg;
5836 struct hlua_txn *htxn;
5837
5838 MAY_LJMP(check_args(L, 2, "deflog"));
5839 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5840 msg = MAY_LJMP(luaL_checkstring(L, 2));
5841
5842 hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg);
5843 return 0;
5844}
5845
5846__LJMP static int hlua_txn_log(lua_State *L)
5847{
5848 int level;
5849 const char *msg;
5850 struct hlua_txn *htxn;
5851
5852 MAY_LJMP(check_args(L, 3, "log"));
5853 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5854 level = MAY_LJMP(luaL_checkinteger(L, 2));
5855 msg = MAY_LJMP(luaL_checkstring(L, 3));
5856
5857 if (level < 0 || level >= NB_LOG_LEVELS)
5858 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
5859
5860 hlua_sendlog(htxn->s->be, level, msg);
5861 return 0;
5862}
5863
5864__LJMP static int hlua_txn_log_debug(lua_State *L)
5865{
5866 const char *msg;
5867 struct hlua_txn *htxn;
5868
5869 MAY_LJMP(check_args(L, 2, "Debug"));
5870 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5871 msg = MAY_LJMP(luaL_checkstring(L, 2));
5872 hlua_sendlog(htxn->s->be, LOG_DEBUG, msg);
5873 return 0;
5874}
5875
5876__LJMP static int hlua_txn_log_info(lua_State *L)
5877{
5878 const char *msg;
5879 struct hlua_txn *htxn;
5880
5881 MAY_LJMP(check_args(L, 2, "Info"));
5882 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5883 msg = MAY_LJMP(luaL_checkstring(L, 2));
5884 hlua_sendlog(htxn->s->be, LOG_INFO, msg);
5885 return 0;
5886}
5887
5888__LJMP static int hlua_txn_log_warning(lua_State *L)
5889{
5890 const char *msg;
5891 struct hlua_txn *htxn;
5892
5893 MAY_LJMP(check_args(L, 2, "Warning"));
5894 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5895 msg = MAY_LJMP(luaL_checkstring(L, 2));
5896 hlua_sendlog(htxn->s->be, LOG_WARNING, msg);
5897 return 0;
5898}
5899
5900__LJMP static int hlua_txn_log_alert(lua_State *L)
5901{
5902 const char *msg;
5903 struct hlua_txn *htxn;
5904
5905 MAY_LJMP(check_args(L, 2, "Alert"));
5906 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5907 msg = MAY_LJMP(luaL_checkstring(L, 2));
5908 hlua_sendlog(htxn->s->be, LOG_ALERT, msg);
5909 return 0;
5910}
5911
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005912__LJMP static int hlua_txn_set_loglevel(lua_State *L)
5913{
5914 struct hlua_txn *htxn;
5915 int ll;
5916
5917 MAY_LJMP(check_args(L, 2, "set_loglevel"));
5918 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5919 ll = MAY_LJMP(luaL_checkinteger(L, 2));
5920
5921 if (ll < 0 || ll > 7)
5922 WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
5923
5924 htxn->s->logs.level = ll;
5925 return 0;
5926}
5927
5928__LJMP static int hlua_txn_set_tos(lua_State *L)
5929{
5930 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005931 int tos;
5932
5933 MAY_LJMP(check_args(L, 2, "set_tos"));
5934 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5935 tos = MAY_LJMP(luaL_checkinteger(L, 2));
5936
Willy Tarreau1a18b542018-12-11 16:37:42 +01005937 conn_set_tos(objt_conn(htxn->s->sess->origin), tos);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005938 return 0;
5939}
5940
5941__LJMP static int hlua_txn_set_mark(lua_State *L)
5942{
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005943 struct hlua_txn *htxn;
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005944 int mark;
5945
5946 MAY_LJMP(check_args(L, 2, "set_mark"));
5947 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5948 mark = MAY_LJMP(luaL_checkinteger(L, 2));
5949
Willy Tarreau1a18b542018-12-11 16:37:42 +01005950 conn_set_tos(objt_conn(htxn->s->sess->origin), mark);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005951 return 0;
5952}
5953
Patrick Hemmer268a7072018-05-11 12:52:31 -04005954__LJMP static int hlua_txn_set_priority_class(lua_State *L)
5955{
5956 struct hlua_txn *htxn;
5957
5958 MAY_LJMP(check_args(L, 2, "set_priority_class"));
5959 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5960 htxn->s->priority_class = queue_limit_class(MAY_LJMP(luaL_checkinteger(L, 2)));
5961 return 0;
5962}
5963
5964__LJMP static int hlua_txn_set_priority_offset(lua_State *L)
5965{
5966 struct hlua_txn *htxn;
5967
5968 MAY_LJMP(check_args(L, 2, "set_priority_offset"));
5969 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5970 htxn->s->priority_offset = queue_limit_offset(MAY_LJMP(luaL_checkinteger(L, 2)));
5971 return 0;
5972}
5973
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005974/* This function is an Lua binding that send pending data
5975 * to the client, and close the stream interface.
5976 */
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005977__LJMP static int hlua_txn_done(lua_State *L)
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005978{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005979 struct hlua_txn *htxn;
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02005980 struct hlua *hlua;
Willy Tarreau81389672015-03-10 12:03:52 +01005981 struct channel *ic, *oc;
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005982
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005983 MAY_LJMP(check_args(L, 1, "close"));
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005984 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02005985 hlua = hlua_gethlua(L);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005986
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005987 /* If the flags NOTERM is set, we cannot terminate the http
5988 * session, so we just end the execution of the current
5989 * lua code.
5990 */
5991 if (htxn->flags & HLUA_TXN_NOTERM) {
5992 WILL_LJMP(hlua_done(L));
5993 return 0;
5994 }
5995
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005996 ic = &htxn->s->req;
5997 oc = &htxn->s->res;
Willy Tarreau81389672015-03-10 12:03:52 +01005998
Christopher Faulet4d0e2632019-07-16 10:52:40 +02005999 if (IS_HTX_STRM(htxn->s))
6000 htx_reply_and_close(htxn->s, 0, NULL);
6001 else {
6002 if (htxn->s->txn) {
6003 /* HTTP mode, let's stay in sync with the stream */
6004 b_del(&ic->buf, htxn->s->txn->req.sov);
6005 htxn->s->txn->req.next -= htxn->s->txn->req.sov;
6006 htxn->s->txn->req.sov = 0;
6007
6008 ic->analysers &= AN_REQ_HTTP_XFER_BODY;
6009 oc->analysers = AN_RES_HTTP_XFER_BODY;
6010 htxn->s->txn->req.msg_state = HTTP_MSG_CLOSED;
6011 htxn->s->txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreau630ef452015-08-28 10:06:15 +02006012
Willy Tarreau630ef452015-08-28 10:06:15 +02006013 /* Note that if we want to support keep-alive, we need
6014 * to bypass the close/shutr_now calls below, but that
6015 * may only be done if the HTTP request was already
6016 * processed and the connection header is known (ie
6017 * not during TCP rules).
6018 */
Christopher Faulet4d0e2632019-07-16 10:52:40 +02006019 }
Willy Tarreau630ef452015-08-28 10:06:15 +02006020
Christopher Faulet4d0e2632019-07-16 10:52:40 +02006021 channel_auto_read(ic);
6022 channel_abort(ic);
6023 channel_auto_close(ic);
6024 channel_erase(ic);
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02006025
Christopher Faulet4d0e2632019-07-16 10:52:40 +02006026 oc->wex = tick_add_ifset(now_ms, oc->wto);
6027 channel_auto_read(oc);
6028 channel_auto_close(oc);
6029 channel_shutr_now(oc);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01006030
Christopher Faulet4d0e2632019-07-16 10:52:40 +02006031 ic->analysers = 0;
6032 }
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02006033
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02006034 hlua->flags |= HLUA_STOP;
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02006035 WILL_LJMP(hlua_done(L));
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01006036 return 0;
6037}
6038
6039__LJMP static int hlua_log(lua_State *L)
6040{
6041 int level;
6042 const char *msg;
6043
6044 MAY_LJMP(check_args(L, 2, "log"));
6045 level = MAY_LJMP(luaL_checkinteger(L, 1));
6046 msg = MAY_LJMP(luaL_checkstring(L, 2));
6047
6048 if (level < 0 || level >= NB_LOG_LEVELS)
6049 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
6050
6051 hlua_sendlog(NULL, level, msg);
6052 return 0;
6053}
6054
6055__LJMP static int hlua_log_debug(lua_State *L)
6056{
6057 const char *msg;
6058
6059 MAY_LJMP(check_args(L, 1, "debug"));
6060 msg = MAY_LJMP(luaL_checkstring(L, 1));
6061 hlua_sendlog(NULL, LOG_DEBUG, msg);
6062 return 0;
6063}
6064
6065__LJMP static int hlua_log_info(lua_State *L)
6066{
6067 const char *msg;
6068
6069 MAY_LJMP(check_args(L, 1, "info"));
6070 msg = MAY_LJMP(luaL_checkstring(L, 1));
6071 hlua_sendlog(NULL, LOG_INFO, msg);
6072 return 0;
6073}
6074
6075__LJMP static int hlua_log_warning(lua_State *L)
6076{
6077 const char *msg;
6078
6079 MAY_LJMP(check_args(L, 1, "warning"));
6080 msg = MAY_LJMP(luaL_checkstring(L, 1));
6081 hlua_sendlog(NULL, LOG_WARNING, msg);
6082 return 0;
6083}
6084
6085__LJMP static int hlua_log_alert(lua_State *L)
6086{
6087 const char *msg;
6088
6089 MAY_LJMP(check_args(L, 1, "alert"));
6090 msg = MAY_LJMP(luaL_checkstring(L, 1));
6091 hlua_sendlog(NULL, LOG_ALERT, msg);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01006092 return 0;
6093}
6094
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006095__LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006096{
6097 int wakeup_ms = lua_tointeger(L, -1);
6098 if (now_ms < wakeup_ms)
Willy Tarreau9635e032018-10-16 17:52:55 +02006099 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006100 return 0;
6101}
6102
6103__LJMP static int hlua_sleep(lua_State *L)
6104{
6105 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006106 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006107
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006108 MAY_LJMP(check_args(L, 1, "sleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006109
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006110 delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006111 wakeup_ms = tick_add(now_ms, delay);
6112 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006113
Willy Tarreau9635e032018-10-16 17:52:55 +02006114 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006115 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006116}
6117
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006118__LJMP static int hlua_msleep(lua_State *L)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006119{
6120 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006121 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006122
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006123 MAY_LJMP(check_args(L, 1, "msleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006124
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006125 delay = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006126 wakeup_ms = tick_add(now_ms, delay);
6127 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006128
Willy Tarreau9635e032018-10-16 17:52:55 +02006129 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006130 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01006131}
6132
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006133/* This functionis an LUA binding. it permits to give back
6134 * the hand at the HAProxy scheduler. It is used when the
6135 * LUA processing consumes a lot of time.
6136 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01006137__LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006138{
6139 return 0;
6140}
6141
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006142__LJMP static int hlua_yield(lua_State *L)
6143{
Willy Tarreau9635e032018-10-16 17:52:55 +02006144 MAY_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01006145 return 0;
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01006146}
6147
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006148/* This function change the nice of the currently executed
6149 * task. It is used set low or high priority at the current
6150 * task.
6151 */
Willy Tarreau59551662015-03-10 14:23:13 +01006152__LJMP static int hlua_set_nice(lua_State *L)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006153{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006154 struct hlua *hlua;
6155 int nice;
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006156
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006157 MAY_LJMP(check_args(L, 1, "set_nice"));
6158 hlua = hlua_gethlua(L);
6159 nice = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006160
6161 /* If he task is not set, I'm in a start mode. */
6162 if (!hlua || !hlua->task)
6163 return 0;
6164
6165 if (nice < -1024)
6166 nice = -1024;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01006167 else if (nice > 1024)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01006168 nice = 1024;
6169
6170 hlua->task->nice = nice;
6171 return 0;
6172}
6173
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006174/* This function is used as a callback of a task. It is called by the
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006175 * HAProxy task subsystem when the task is awaked. The LUA runtime can
6176 * return an E_AGAIN signal, the emmiter of this signal must set a
6177 * signal to wake the task.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006178 *
6179 * Task wrapper are longjmp safe because the only one Lua code
6180 * executed is the safe hlua_ctx_resume();
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006181 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02006182static struct task *hlua_process_task(struct task *task, void *context, unsigned short state)
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006183{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006184 struct hlua *hlua = context;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006185 enum hlua_exec status;
6186
Christopher Faulet5bc99722018-04-25 10:34:45 +02006187 if (task->thread_mask == MAX_THREADS_MASK)
6188 task_set_affinity(task, tid_bit);
6189
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006190 /* If it is the first call to the task, we must initialize the
6191 * execution timeouts.
6192 */
6193 if (!HLUA_IS_RUNNING(hlua))
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006194 hlua->max_time = hlua_timeout_task;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006195
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006196 /* Execute the Lua code. */
6197 status = hlua_ctx_resume(hlua, 1);
6198
6199 switch (status) {
6200 /* finished or yield */
6201 case HLUA_E_OK:
6202 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006203 task_destroy(task);
Tim Duesterhuscd235c62018-04-24 13:56:01 +02006204 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006205 break;
6206
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006207 case HLUA_E_AGAIN: /* co process or timeout wake me later. */
Thierry FOURNIERcb146882017-12-10 17:10:57 +01006208 notification_gc(&hlua->com);
PiBa-NLfe971b32018-05-02 22:27:14 +02006209 task->expire = hlua->wake_time;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006210 break;
6211
6212 /* finished with error. */
6213 case HLUA_E_ERRMSG:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006214 SEND_ERR(NULL, "Lua task: %s.\n", lua_tostring(hlua->T, -1));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006215 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006216 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006217 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006218 break;
6219
6220 case HLUA_E_ERR:
6221 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006222 SEND_ERR(NULL, "Lua task: unknown error.\n");
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006223 hlua_ctx_destroy(hlua);
Olivier Houchard3f795f72019-04-17 22:51:06 +02006224 task_destroy(task);
Emeric Brun253e53e2017-10-17 18:58:40 +02006225 task = NULL;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006226 break;
6227 }
Emeric Brun253e53e2017-10-17 18:58:40 +02006228 return task;
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006229}
6230
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006231/* This function is an LUA binding that register LUA function to be
6232 * executed after the HAProxy configuration parsing and before the
6233 * HAProxy scheduler starts. This function expect only one LUA
6234 * argument that is a function. This function returns nothing, but
6235 * throws if an error is encountered.
6236 */
6237__LJMP static int hlua_register_init(lua_State *L)
6238{
6239 struct hlua_init_function *init;
6240 int ref;
6241
6242 MAY_LJMP(check_args(L, 1, "register_init"));
6243
6244 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6245
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006246 init = calloc(1, sizeof(*init));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006247 if (!init)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006248 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01006249
6250 init->function_ref = ref;
6251 LIST_ADDQ(&hlua_init_functions, &init->l);
6252 return 0;
6253}
6254
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006255/* This functio is an LUA binding. It permits to register a task
6256 * executed in parallel of the main HAroxy activity. The task is
6257 * created and it is set in the HAProxy scheduler. It can be called
6258 * from the "init" section, "post init" or during the runtime.
6259 *
6260 * Lua prototype:
6261 *
6262 * <none> core.register_task(<function>)
6263 */
6264static int hlua_register_task(lua_State *L)
6265{
6266 struct hlua *hlua;
6267 struct task *task;
6268 int ref;
6269
6270 MAY_LJMP(check_args(L, 1, "register_task"));
6271
6272 ref = MAY_LJMP(hlua_checkfunction(L, 1));
6273
Willy Tarreaubafbe012017-11-24 17:34:44 +01006274 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006275 if (!hlua)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006276 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006277
Emeric Brunc60def82017-09-27 14:59:38 +02006278 task = task_new(MAX_THREADS_MASK);
Willy Tarreaue09101e2018-10-16 17:37:12 +02006279 if (!task)
6280 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
6281
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006282 task->context = hlua;
6283 task->process = hlua_process_task;
6284
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006285 if (!hlua_ctx_init(hlua, task, 1))
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006286 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01006287
6288 /* Restore the function in the stack. */
6289 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref);
6290 hlua->nargs = 0;
6291
6292 /* Schedule task. */
6293 task_schedule(task, now_ms);
6294
6295 return 0;
6296}
6297
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006298/* Wrapper called by HAProxy to execute an LUA converter. This wrapper
6299 * doesn't allow "yield" functions because the HAProxy engine cannot
6300 * resume converters.
6301 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006302static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006303{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006304 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006305 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006306 const char *error;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006307
Willy Tarreaube508f12016-03-10 11:47:01 +01006308 if (!stream)
6309 return 0;
6310
Willy Tarreau87b09662015-04-03 00:22:06 +02006311 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006312 * Lua context can be not initialized. This behavior
6313 * permits to save performances because a systematic
6314 * Lua initialization cause 5% performances loss.
6315 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006316 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006317 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006318 if (!stream->hlua) {
6319 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6320 return 0;
6321 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006322 if (!hlua_ctx_init(stream->hlua, stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006323 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
6324 return 0;
6325 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006326 }
6327
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006328 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006329 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006330
6331 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006332 if (!SET_SAFE_LJMP(stream->hlua->T)) {
6333 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6334 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006335 else
6336 error = "critical error";
6337 SEND_ERR(stream->be, "Lua converter '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006338 return 0;
6339 }
6340
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006341 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006342 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006343 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006344 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006345 return 0;
6346 }
6347
6348 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006349 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006350
6351 /* convert input sample and pust-it in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006352 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006353 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006354 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006355 return 0;
6356 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006357 hlua_smp2lua(stream->hlua->T, smp);
6358 stream->hlua->nargs = 1;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006359
6360 /* push keywords in the stack. */
6361 if (arg_p) {
6362 for (; arg_p->type != ARGT_STOP; arg_p++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006363 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006364 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006365 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006366 return 0;
6367 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006368 hlua_arg2lua(stream->hlua->T, arg_p);
6369 stream->hlua->nargs++;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006370 }
6371 }
6372
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006373 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006374 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006375
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006376 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006377 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006378 }
6379
6380 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006381 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006382 /* finished. */
6383 case HLUA_E_OK:
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006384 /* If the stack is empty, the function fails. */
6385 if (lua_gettop(stream->hlua->T) <= 0)
6386 return 0;
6387
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006388 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006389 hlua_lua2smp(stream->hlua->T, -1, smp);
6390 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006391 return 1;
6392
6393 /* yield. */
6394 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006395 SEND_ERR(stream->be, "Lua converter '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006396 return 0;
6397
6398 /* finished with error. */
6399 case HLUA_E_ERRMSG:
6400 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006401 SEND_ERR(stream->be, "Lua converter '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006402 fcn->name, lua_tostring(stream->hlua->T, -1));
6403 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006404 return 0;
6405
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006406 case HLUA_E_ETMOUT:
6407 SEND_ERR(stream->be, "Lua converter '%s': execution timeout.\n", fcn->name);
6408 return 0;
6409
6410 case HLUA_E_NOMEM:
6411 SEND_ERR(stream->be, "Lua converter '%s': out of memory error.\n", fcn->name);
6412 return 0;
6413
6414 case HLUA_E_YIELD:
6415 SEND_ERR(stream->be, "Lua converter '%s': yield functions like core.tcp() or core.sleep() are not allowed.\n", fcn->name);
6416 return 0;
6417
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006418 case HLUA_E_ERR:
6419 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006420 SEND_ERR(stream->be, "Lua converter '%s' returns an unknown error.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006421
6422 default:
6423 return 0;
6424 }
6425}
6426
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006427/* Wrapper called by HAProxy to execute a sample-fetch. this wrapper
6428 * doesn't allow "yield" functions because the HAProxy engine cannot
Willy Tarreaube508f12016-03-10 11:47:01 +01006429 * resume sample-fetches. This function will be called by the sample
6430 * fetch engine to call lua-based fetch operations.
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006431 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +02006432static int hlua_sample_fetch_wrapper(const struct arg *arg_p, struct sample *smp,
6433 const char *kw, void *private)
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006434{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006435 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02006436 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006437 const char *error;
Willy Tarreau83061a82018-07-13 11:56:34 +02006438 const struct buffer msg = { };
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006439
Willy Tarreaube508f12016-03-10 11:47:01 +01006440 if (!stream)
6441 return 0;
Christopher Fauletafd8f102018-11-08 11:34:21 +01006442
Willy Tarreau87b09662015-04-03 00:22:06 +02006443 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006444 * Lua context can be not initialized. This behavior
6445 * permits to save performances because a systematic
6446 * Lua initialization cause 5% performances loss.
6447 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006448 if (!stream->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006449 stream->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006450 if (!stream->hlua) {
6451 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6452 return 0;
6453 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006454 if (!hlua_ctx_init(stream->hlua, stream->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006455 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
6456 return 0;
6457 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006458 }
6459
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006460 consistency_set(stream, smp->opt, &stream->hlua->cons);
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01006461
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006462 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006463 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006464
6465 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006466 if (!SET_SAFE_LJMP(stream->hlua->T)) {
6467 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
6468 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006469 else
6470 error = "critical error";
6471 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006472 return 0;
6473 }
6474
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006475 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006476 if (!lua_checkstack(stream->hlua->T, 2)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006477 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006478 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006479 return 0;
6480 }
6481
6482 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006483 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006484
6485 /* push arguments in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006486 if (!hlua_txn_new(stream->hlua->T, stream, smp->px, smp->opt & SMP_OPT_DIR,
Thierry FOURNIERab00df62016-07-14 11:42:37 +02006487 HLUA_TXN_NOTERM)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006488 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006489 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006490 return 0;
6491 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006492 stream->hlua->nargs = 1;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006493
6494 /* push keywords in the stack. */
6495 for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) {
6496 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006497 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006498 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006499 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006500 return 0;
6501 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006502 hlua_arg2lua(stream->hlua->T, arg_p);
6503 stream->hlua->nargs++;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006504 }
6505
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006506 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006507 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006508
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006509 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006510 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006511 }
6512
6513 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006514 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006515 /* finished. */
6516 case HLUA_E_OK:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006517 if (!consistency_check(stream, smp->opt, &stream->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006518 si_retnclose(&stream->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02006519 return 0;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01006520 }
Thierry FOURNIERfd80df12017-05-12 16:32:20 +02006521 /* If the stack is empty, the function fails. */
6522 if (lua_gettop(stream->hlua->T) <= 0)
6523 return 0;
6524
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006525 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006526 hlua_lua2smp(stream->hlua->T, -1, smp);
6527 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006528
6529 /* Set the end of execution flag. */
6530 smp->flags &= ~SMP_F_MAY_CHANGE;
6531 return 1;
6532
6533 /* yield. */
6534 case HLUA_E_AGAIN:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006535 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006536 si_retnclose(&stream->si[0], &msg);
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006537 SEND_ERR(smp->px, "Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006538 return 0;
6539
6540 /* finished with error. */
6541 case HLUA_E_ERRMSG:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006542 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006543 si_retnclose(&stream->si[0], &msg);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006544 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006545 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006546 fcn->name, lua_tostring(stream->hlua->T, -1));
6547 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006548 return 0;
6549
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006550 case HLUA_E_ETMOUT:
6551 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006552 si_retnclose(&stream->si[0], &msg);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006553 SEND_ERR(smp->px, "Lua sample-fetch '%s': execution timeout.\n", fcn->name);
6554 return 0;
6555
6556 case HLUA_E_NOMEM:
6557 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006558 si_retnclose(&stream->si[0], &msg);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006559 SEND_ERR(smp->px, "Lua sample-fetch '%s': out of memory error.\n", fcn->name);
6560 return 0;
6561
6562 case HLUA_E_YIELD:
6563 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006564 si_retnclose(&stream->si[0], &msg);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006565 SEND_ERR(smp->px, "Lua sample-fetch '%s': yield not allowed.\n", fcn->name);
6566 return 0;
6567
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006568 case HLUA_E_ERR:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006569 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006570 si_retnclose(&stream->si[0], &msg);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006571 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006572 SEND_ERR(smp->px, "Lua sample-fetch '%s' returns an unknown error.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006573
6574 default:
6575 return 0;
6576 }
6577}
6578
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006579/* This function is an LUA binding used for registering
6580 * "sample-conv" functions. It expects a converter name used
6581 * in the haproxy configuration file, and an LUA function.
6582 */
6583__LJMP static int hlua_register_converters(lua_State *L)
6584{
6585 struct sample_conv_kw_list *sck;
6586 const char *name;
6587 int ref;
6588 int len;
6589 struct hlua_function *fcn;
6590
6591 MAY_LJMP(check_args(L, 2, "register_converters"));
6592
6593 /* First argument : converter name. */
6594 name = MAY_LJMP(luaL_checkstring(L, 1));
6595
6596 /* Second argument : lua function. */
6597 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6598
6599 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006600 sck = calloc(1, sizeof(*sck) + sizeof(struct sample_conv) * 2);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006601 if (!sck)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006602 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006603 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006604 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006605 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006606
6607 /* Fill fcn. */
6608 fcn->name = strdup(name);
6609 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006610 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006611 fcn->function_ref = ref;
6612
6613 /* List head */
6614 sck->list.n = sck->list.p = NULL;
6615
6616 /* converter keyword. */
6617 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006618 sck->kw[0].kw = calloc(1, len);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006619 if (!sck->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006620 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006621
6622 snprintf((char *)sck->kw[0].kw, len, "lua.%s", name);
6623 sck->kw[0].process = hlua_sample_conv_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006624 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 +01006625 sck->kw[0].val_args = NULL;
6626 sck->kw[0].in_type = SMP_T_STR;
6627 sck->kw[0].out_type = SMP_T_STR;
6628 sck->kw[0].private = fcn;
6629
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01006630 /* Register this new converter */
6631 sample_register_convs(sck);
6632
6633 return 0;
6634}
6635
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006636/* This function is an LUA binding used for registering
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006637 * "sample-fetch" functions. It expects a converter name used
6638 * in the haproxy configuration file, and an LUA function.
6639 */
6640__LJMP static int hlua_register_fetches(lua_State *L)
6641{
6642 const char *name;
6643 int ref;
6644 int len;
6645 struct sample_fetch_kw_list *sfk;
6646 struct hlua_function *fcn;
6647
6648 MAY_LJMP(check_args(L, 2, "register_fetches"));
6649
6650 /* First argument : sample-fetch name. */
6651 name = MAY_LJMP(luaL_checkstring(L, 1));
6652
6653 /* Second argument : lua function. */
6654 ref = MAY_LJMP(hlua_checkfunction(L, 2));
6655
6656 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006657 sfk = calloc(1, sizeof(*sfk) + sizeof(struct sample_fetch) * 2);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006658 if (!sfk)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006659 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006660 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006661 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006662 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006663
6664 /* Fill fcn. */
6665 fcn->name = strdup(name);
6666 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006667 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006668 fcn->function_ref = ref;
6669
6670 /* List head */
6671 sfk->list.n = sfk->list.p = NULL;
6672
6673 /* sample-fetch keyword. */
6674 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006675 sfk->kw[0].kw = calloc(1, len);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006676 if (!sfk->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01006677 return luaL_error(L, "Lua out of memory error.");
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006678
6679 snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name);
6680 sfk->kw[0].process = hlua_sample_fetch_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01006681 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 +01006682 sfk->kw[0].val_args = NULL;
6683 sfk->kw[0].out_type = SMP_T_STR;
6684 sfk->kw[0].use = SMP_USE_HTTP_ANY;
6685 sfk->kw[0].val = 0;
6686 sfk->kw[0].private = fcn;
6687
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01006688 /* Register this new fetch. */
6689 sample_register_fetches(sfk);
6690
6691 return 0;
6692}
6693
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006694/* This function is a wrapper to execute each LUA function declared
6695 * as an action wrapper during the initialisation period. This function
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006696 * return ACT_RET_CONT if the processing is finished (with or without
6697 * error) and return ACT_RET_YIELD if the function must be called again
6698 * because the LUA returns a yield.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006699 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006700static enum act_return hlua_action(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +02006701 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006702{
6703 char **arg;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006704 unsigned int analyzer;
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02006705 int dir;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006706 const char *error;
Willy Tarreau83061a82018-07-13 11:56:34 +02006707 const struct buffer msg = { };
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006708
6709 switch (rule->from) {
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01006710 case ACT_F_TCP_REQ_CNT: analyzer = AN_REQ_INSPECT_FE ; dir = SMP_OPT_DIR_REQ; break;
6711 case ACT_F_TCP_RES_CNT: analyzer = AN_RES_INSPECT ; dir = SMP_OPT_DIR_RES; break;
6712 case ACT_F_HTTP_REQ: analyzer = AN_REQ_HTTP_PROCESS_FE; dir = SMP_OPT_DIR_REQ; break;
6713 case ACT_F_HTTP_RES: analyzer = AN_RES_HTTP_PROCESS_BE; dir = SMP_OPT_DIR_RES; break;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006714 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006715 SEND_ERR(px, "Lua: internal error while execute action.\n");
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006716 return ACT_RET_CONT;
6717 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006718
Willy Tarreau87b09662015-04-03 00:22:06 +02006719 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006720 * Lua context can be not initialized. This behavior
6721 * permits to save performances because a systematic
6722 * Lua initialization cause 5% performances loss.
6723 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006724 if (!s->hlua) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01006725 s->hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006726 if (!s->hlua) {
6727 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
6728 rule->arg.hlua_rule->fcn.name);
6729 return ACT_RET_CONT;
6730 }
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006731 if (!hlua_ctx_init(s->hlua, s->task, 0)) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006732 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
6733 rule->arg.hlua_rule->fcn.name);
6734 return ACT_RET_CONT;
6735 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01006736 }
6737
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006738 consistency_set(s, dir, &s->hlua->cons);
6739
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006740 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006741 if (!HLUA_IS_RUNNING(s->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006742
6743 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006744 if (!SET_SAFE_LJMP(s->hlua->T)) {
6745 if (lua_type(s->hlua->T, -1) == LUA_TSTRING)
6746 error = lua_tostring(s->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01006747 else
6748 error = "critical error";
6749 SEND_ERR(px, "Lua function '%s': %s.\n",
6750 rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006751 return ACT_RET_CONT;
6752 }
6753
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006754 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006755 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006756 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006757 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006758 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006759 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006760 }
6761
6762 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006763 lua_rawgeti(s->hlua->T, LUA_REGISTRYINDEX, rule->arg.hlua_rule->fcn.function_ref);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006764
Willy Tarreau87b09662015-04-03 00:22:06 +02006765 /* Create and and push object stream in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006766 if (!hlua_txn_new(s->hlua->T, s, px, dir, 0)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006767 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006768 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006769 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006770 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006771 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006772 s->hlua->nargs = 1;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006773
6774 /* push keywords in the stack. */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006775 for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006776 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006777 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006778 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006779 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006780 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006781 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006782 lua_pushstring(s->hlua->T, *arg);
6783 s->hlua->nargs++;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006784 }
6785
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006786 /* Now the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006787 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006788
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006789 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006790 s->hlua->max_time = hlua_timeout_session;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006791 }
6792
6793 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006794 switch (hlua_ctx_resume(s->hlua, !(flags & ACT_FLAG_FINAL))) {
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006795 /* finished. */
6796 case HLUA_E_OK:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006797 if (!consistency_check(s, dir, &s->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006798 si_retnclose(&s->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02006799 return ACT_RET_ERR;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01006800 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006801 if (s->hlua->flags & HLUA_STOP)
Christopher Faulet8f1aa772019-07-04 11:27:15 +02006802 return ACT_RET_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006803 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006804
6805 /* yield. */
6806 case HLUA_E_AGAIN:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006807 /* Set timeout in the required channel. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006808 if (s->hlua->wake_time != TICK_ETERNITY) {
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006809 if (analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE))
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006810 s->req.analyse_exp = s->hlua->wake_time;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006811 else if (analyzer & (AN_RES_INSPECT|AN_RES_HTTP_PROCESS_BE))
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006812 s->res.analyse_exp = s->hlua->wake_time;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01006813 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006814 /* Some actions can be wake up when a "write" event
6815 * is detected on a response channel. This is useful
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006816 * only for actions targeted on the requests.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006817 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006818 if (HLUA_IS_WAKERESWR(s->hlua)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01006819 s->res.flags |= CF_WAKE_WRITE;
Willy Tarreau76bd97f2015-03-10 17:16:10 +01006820 if ((analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE)))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01006821 s->res.analysers |= analyzer;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006822 }
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;
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08006825 /* We can quit the function without consistency check
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01006826 * because HAProxy is not able to manipulate data, it
6827 * is only allowed to call me again. */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006828 return ACT_RET_YIELD;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006829
6830 /* finished with error. */
6831 case HLUA_E_ERRMSG:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006832 if (!consistency_check(s, dir, &s->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006833 si_retnclose(&s->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02006834 return ACT_RET_ERR;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01006835 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006836 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006837 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006838 rule->arg.hlua_rule->fcn.name, lua_tostring(s->hlua->T, -1));
6839 lua_pop(s->hlua->T, 1);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006840 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006841
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006842 case HLUA_E_ETMOUT:
6843 if (!consistency_check(s, dir, &s->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006844 si_retnclose(&s->si[0], &msg);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006845 return ACT_RET_ERR;
6846 }
6847 SEND_ERR(px, "Lua function '%s': execution timeout.\n", rule->arg.hlua_rule->fcn.name);
6848 return 0;
6849
6850 case HLUA_E_NOMEM:
6851 if (!consistency_check(s, dir, &s->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006852 si_retnclose(&s->si[0], &msg);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006853 return ACT_RET_ERR;
6854 }
6855 SEND_ERR(px, "Lua function '%s': out of memory error.\n", rule->arg.hlua_rule->fcn.name);
6856 return 0;
6857
6858 case HLUA_E_YIELD:
6859 if (!consistency_check(s, dir, &s->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006860 si_retnclose(&s->si[0], &msg);
Thierry Fournierd5b073c2018-05-21 19:42:47 +02006861 return ACT_RET_ERR;
6862 }
6863 SEND_ERR(px, "Lua function '%s': aborting Lua processing on expired timeout.\n",
6864 rule->arg.hlua_rule->fcn.name);
6865 return 0;
6866
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006867 case HLUA_E_ERR:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01006868 if (!consistency_check(s, dir, &s->hlua->cons)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01006869 si_retnclose(&s->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02006870 return ACT_RET_ERR;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01006871 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006872 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02006873 SEND_ERR(px, "Lua function '%s' return an unknown error.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006874 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006875
6876 default:
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02006877 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006878 }
6879}
6880
Olivier Houchard9f6af332018-05-25 14:04:04 +02006881struct task *hlua_applet_wakeup(struct task *t, void *context, unsigned short state)
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006882{
Olivier Houchard9f6af332018-05-25 14:04:04 +02006883 struct appctx *ctx = context;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006884
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006885 appctx_wakeup(ctx);
Willy Tarreaud9587412017-08-23 16:07:33 +02006886 t->expire = TICK_ETERNITY;
Willy Tarreaud1aa41f2017-07-21 16:41:56 +02006887 return t;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006888}
6889
6890static int hlua_applet_tcp_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
6891{
6892 struct stream_interface *si = ctx->owner;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006893 struct hlua *hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006894 struct task *task;
6895 char **arg;
Thierry Fournierfd107a22016-02-19 19:57:23 +01006896 const char *error;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006897
Willy Tarreaubafbe012017-11-24 17:34:44 +01006898 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006899 if (!hlua) {
6900 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
6901 ctx->rule->arg.hlua_rule->fcn.name);
6902 return 0;
6903 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006904 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006905 ctx->ctx.hlua_apptcp.hlua = hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006906 ctx->ctx.hlua_apptcp.flags = 0;
6907
6908 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01006909 task = task_new(tid_bit);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006910 if (!task) {
6911 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
6912 ctx->rule->arg.hlua_rule->fcn.name);
6913 return 0;
6914 }
6915 task->nice = 0;
6916 task->context = ctx;
6917 task->process = hlua_applet_wakeup;
6918 ctx->ctx.hlua_apptcp.task = task;
6919
6920 /* In the execution wrappers linked with a stream, the
6921 * Lua context can be not initialized. This behavior
6922 * permits to save performances because a systematic
6923 * Lua initialization cause 5% performances loss.
6924 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01006925 if (!hlua_ctx_init(hlua, task, 0)) {
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006926 SEND_ERR(px, "Lua applet tcp '%s': can't initialize Lua context.\n",
6927 ctx->rule->arg.hlua_rule->fcn.name);
6928 return 0;
6929 }
6930
6931 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006932 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006933
6934 /* The following Lua calls can fail. */
6935 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01006936 if (lua_type(hlua->T, -1) == LUA_TSTRING)
6937 error = lua_tostring(hlua->T, -1);
6938 else
6939 error = "critical error";
6940 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
6941 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006942 return 0;
6943 }
6944
6945 /* Check stack available size. */
6946 if (!lua_checkstack(hlua->T, 1)) {
6947 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6948 ctx->rule->arg.hlua_rule->fcn.name);
6949 RESET_SAFE_LJMP(hlua->T);
6950 return 0;
6951 }
6952
6953 /* Restore the function in the stack. */
6954 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
6955
6956 /* Create and and push object stream in the stack. */
6957 if (!hlua_applet_tcp_new(hlua->T, ctx)) {
6958 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6959 ctx->rule->arg.hlua_rule->fcn.name);
6960 RESET_SAFE_LJMP(hlua->T);
6961 return 0;
6962 }
6963 hlua->nargs = 1;
6964
6965 /* push keywords in the stack. */
6966 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
6967 if (!lua_checkstack(hlua->T, 1)) {
6968 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6969 ctx->rule->arg.hlua_rule->fcn.name);
6970 RESET_SAFE_LJMP(hlua->T);
6971 return 0;
6972 }
6973 lua_pushstring(hlua->T, *arg);
6974 hlua->nargs++;
6975 }
6976
6977 RESET_SAFE_LJMP(hlua->T);
6978
6979 /* Wakeup the applet ASAP. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01006980 si_cant_get(si);
Willy Tarreau3367d412018-11-15 10:57:41 +01006981 si_rx_endp_more(si);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006982
6983 return 1;
6984}
6985
6986static void hlua_applet_tcp_fct(struct appctx *ctx)
6987{
6988 struct stream_interface *si = ctx->owner;
6989 struct stream *strm = si_strm(si);
6990 struct channel *res = si_ic(si);
6991 struct act_rule *rule = ctx->rule;
6992 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006993 struct hlua *hlua = ctx->ctx.hlua_apptcp.hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006994
6995 /* The applet execution is already done. */
Olivier Houchard594c8c52018-08-28 14:41:31 +02006996 if (ctx->ctx.hlua_apptcp.flags & APPLET_DONE) {
6997 /* eat the whole request */
6998 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006999 return;
Olivier Houchard594c8c52018-08-28 14:41:31 +02007000 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007001
7002 /* If the stream is disconnect or closed, ldo nothing. */
7003 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7004 return;
7005
7006 /* Execute the function. */
7007 switch (hlua_ctx_resume(hlua, 1)) {
7008 /* finished. */
7009 case HLUA_E_OK:
7010 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7011
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007012 /* eat the whole request */
Willy Tarreaua79021a2018-06-15 18:07:57 +02007013 co_skip(si_oc(si), co_data(si_oc(si)));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007014 res->flags |= CF_READ_NULL;
7015 si_shutr(si);
7016 return;
7017
7018 /* yield. */
7019 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01007020 if (hlua->wake_time != TICK_ETERNITY)
7021 task_schedule(ctx->ctx.hlua_apptcp.task, hlua->wake_time);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007022 return;
7023
7024 /* finished with error. */
7025 case HLUA_E_ERRMSG:
7026 /* Display log. */
7027 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
7028 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7029 lua_pop(hlua->T, 1);
7030 goto error;
7031
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007032 case HLUA_E_ETMOUT:
7033 SEND_ERR(px, "Lua applet tcp '%s': execution timeout.\n",
7034 rule->arg.hlua_rule->fcn.name);
7035 goto error;
7036
7037 case HLUA_E_NOMEM:
7038 SEND_ERR(px, "Lua applet tcp '%s': out of memory error.\n",
7039 rule->arg.hlua_rule->fcn.name);
7040 goto error;
7041
7042 case HLUA_E_YIELD: /* unexpected */
7043 SEND_ERR(px, "Lua applet tcp '%s': yield not allowed.\n",
7044 rule->arg.hlua_rule->fcn.name);
7045 goto error;
7046
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007047 case HLUA_E_ERR:
7048 /* Display log. */
7049 SEND_ERR(px, "Lua applet tcp '%s' return an unknown error.\n",
7050 rule->arg.hlua_rule->fcn.name);
7051 goto error;
7052
7053 default:
7054 goto error;
7055 }
7056
7057error:
7058
7059 /* For all other cases, just close the stream. */
7060 si_shutw(si);
7061 si_shutr(si);
7062 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
7063}
7064
7065static void hlua_applet_tcp_release(struct appctx *ctx)
7066{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007067 task_destroy(ctx->ctx.hlua_apptcp.task);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007068 ctx->ctx.hlua_apptcp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007069 hlua_ctx_destroy(ctx->ctx.hlua_apptcp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007070 ctx->ctx.hlua_apptcp.hlua = NULL;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007071}
7072
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007073/* The function returns 1 if the initialisation is complete, 0 if
7074 * an errors occurs and -1 if more data are required for initializing
7075 * the applet.
7076 */
7077static int hlua_applet_http_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
7078{
7079 struct stream_interface *si = ctx->owner;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007080 struct http_txn *txn;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007081 struct hlua *hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007082 char **arg;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007083 struct task *task;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007084 const char *error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007085
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007086 txn = strm->txn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007087
Willy Tarreau0078bfc2015-10-07 20:20:28 +02007088 /* We want two things in HTTP mode :
7089 * - enforce server-close mode if we were in keep-alive, so that the
7090 * applet is released after each response ;
7091 * - enable request body transfer to the applet in order to resync
7092 * with the response body.
7093 */
7094 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)
7095 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreau0078bfc2015-10-07 20:20:28 +02007096
Willy Tarreaubafbe012017-11-24 17:34:44 +01007097 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007098 if (!hlua) {
7099 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
7100 ctx->rule->arg.hlua_rule->fcn.name);
7101 return 0;
7102 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007103 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007104 ctx->ctx.hlua_apphttp.hlua = hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007105 ctx->ctx.hlua_apphttp.left_bytes = -1;
7106 ctx->ctx.hlua_apphttp.flags = 0;
7107
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01007108 if (txn->req.flags & HTTP_MSGF_VER_11)
7109 ctx->ctx.hlua_apphttp.flags |= APPLET_HTTP11;
7110
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007111 /* Create task used by signal to wakeup applets. */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007112 task = task_new(tid_bit);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007113 if (!task) {
7114 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
7115 ctx->rule->arg.hlua_rule->fcn.name);
7116 return 0;
7117 }
7118 task->nice = 0;
7119 task->context = ctx;
7120 task->process = hlua_applet_wakeup;
7121 ctx->ctx.hlua_apphttp.task = task;
7122
7123 /* In the execution wrappers linked with a stream, the
7124 * Lua context can be not initialized. This behavior
7125 * permits to save performances because a systematic
7126 * Lua initialization cause 5% performances loss.
7127 */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01007128 if (!hlua_ctx_init(hlua, task, 0)) {
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007129 SEND_ERR(px, "Lua applet http '%s': can't initialize Lua context.\n",
7130 ctx->rule->arg.hlua_rule->fcn.name);
7131 return 0;
7132 }
7133
7134 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02007135 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007136
7137 /* The following Lua calls can fail. */
7138 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007139 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7140 error = lua_tostring(hlua->T, -1);
7141 else
7142 error = "critical error";
7143 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7144 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007145 return 0;
7146 }
7147
7148 /* Check stack available size. */
7149 if (!lua_checkstack(hlua->T, 1)) {
7150 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7151 ctx->rule->arg.hlua_rule->fcn.name);
7152 RESET_SAFE_LJMP(hlua->T);
7153 return 0;
7154 }
7155
7156 /* Restore the function in the stack. */
7157 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
7158
7159 /* Create and and push object stream in the stack. */
7160 if (!hlua_applet_http_new(hlua->T, ctx)) {
7161 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7162 ctx->rule->arg.hlua_rule->fcn.name);
7163 RESET_SAFE_LJMP(hlua->T);
7164 return 0;
7165 }
7166 hlua->nargs = 1;
7167
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007168 /* push keywords in the stack. */
7169 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
7170 if (!lua_checkstack(hlua->T, 1)) {
7171 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
7172 ctx->rule->arg.hlua_rule->fcn.name);
7173 RESET_SAFE_LJMP(hlua->T);
7174 return 0;
7175 }
7176 lua_pushstring(hlua->T, *arg);
7177 hlua->nargs++;
7178 }
7179
7180 RESET_SAFE_LJMP(hlua->T);
7181
7182 /* Wakeup the applet when data is ready for read. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007183 si_cant_get(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007184
7185 return 1;
7186}
7187
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007188static void hlua_applet_htx_fct(struct appctx *ctx)
7189{
7190 struct stream_interface *si = ctx->owner;
7191 struct stream *strm = si_strm(si);
7192 struct channel *req = si_oc(si);
7193 struct channel *res = si_ic(si);
7194 struct act_rule *rule = ctx->rule;
7195 struct proxy *px = strm->be;
7196 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
7197 struct htx *req_htx, *res_htx;
7198
7199 res_htx = htx_from_buf(&res->buf);
7200
7201 /* If the stream is disconnect or closed, ldo nothing. */
7202 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7203 goto out;
7204
7205 /* Check if the input buffer is avalaible. */
7206 if (!b_size(&res->buf)) {
7207 si_rx_room_blk(si);
7208 goto out;
7209 }
7210 /* check that the output is not closed */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007211 if (res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_SHUTR))
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007212 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7213
7214 /* Set the currently running flag. */
7215 if (!HLUA_IS_RUNNING(hlua) &&
7216 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7217 struct htx_blk *blk;
7218 size_t count = co_data(req);
7219
7220 if (!count) {
7221 si_cant_get(si);
7222 goto out;
7223 }
7224
7225 /* We need to flush the request header. This left the body for
7226 * the Lua.
7227 */
7228 req_htx = htx_from_buf(&req->buf);
Christopher Fauleta3f15502019-05-13 15:27:23 +02007229 blk = htx_get_first_blk(req_htx);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007230 while (count && blk) {
7231 enum htx_blk_type type = htx_get_blk_type(blk);
7232 uint32_t sz = htx_get_blksz(blk);
7233
7234 if (sz > count) {
7235 si_cant_get(si);
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007236 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007237 goto out;
7238 }
7239
7240 count -= sz;
7241 co_set_data(req, co_data(req) - sz);
7242 blk = htx_remove_blk(req_htx, blk);
7243
7244 if (type == HTX_BLK_EOH)
7245 break;
7246 }
Christopher Faulet0ae79d02019-02-27 21:36:59 +01007247 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007248 }
7249
7250 /* Executes The applet if it is not done. */
7251 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7252
7253 /* Execute the function. */
7254 switch (hlua_ctx_resume(hlua, 1)) {
7255 /* finished. */
7256 case HLUA_E_OK:
7257 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7258 break;
7259
7260 /* yield. */
7261 case HLUA_E_AGAIN:
7262 if (hlua->wake_time != TICK_ETERNITY)
7263 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007264 goto out;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007265
7266 /* finished with error. */
7267 case HLUA_E_ERRMSG:
7268 /* Display log. */
7269 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7270 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7271 lua_pop(hlua->T, 1);
7272 goto error;
7273
7274 case HLUA_E_ETMOUT:
7275 SEND_ERR(px, "Lua applet http '%s': execution timeout.\n",
7276 rule->arg.hlua_rule->fcn.name);
7277 goto error;
7278
7279 case HLUA_E_NOMEM:
7280 SEND_ERR(px, "Lua applet http '%s': out of memory error.\n",
7281 rule->arg.hlua_rule->fcn.name);
7282 goto error;
7283
7284 case HLUA_E_YIELD: /* unexpected */
7285 SEND_ERR(px, "Lua applet http '%s': yield not allowed.\n",
7286 rule->arg.hlua_rule->fcn.name);
7287 goto error;
7288
7289 case HLUA_E_ERR:
7290 /* Display log. */
7291 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\n",
7292 rule->arg.hlua_rule->fcn.name);
7293 goto error;
7294
7295 default:
7296 goto error;
7297 }
7298 }
7299
7300 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007301 if (ctx->ctx.hlua_apphttp.flags & APPLET_RSP_SENT)
7302 goto done;
7303
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007304 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT))
7305 goto error;
7306
Christopher Faulet54b5e212019-06-04 10:08:28 +02007307 /* Don't add TLR because mux-h1 will take care of it */
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007308 if (!htx_add_endof(res_htx, HTX_BLK_EOM)) {
7309 si_rx_room_blk(si);
7310 goto out;
7311 }
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007312 channel_add_input(res, 1);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007313 strm->txn->status = ctx->ctx.hlua_apphttp.status;
7314 ctx->ctx.hlua_apphttp.flags |= APPLET_RSP_SENT;
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007315 }
7316
7317 done:
7318 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007319 if (!(res->flags & CF_SHUTR)) {
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007320 res->flags |= CF_READ_NULL;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007321 si_shutr(si);
7322 }
7323
7324 /* eat the whole request */
7325 if (co_data(req)) {
7326 req_htx = htx_from_buf(&req->buf);
7327 co_htx_skip(req, req_htx, co_data(req));
7328 htx_to_buf(req_htx, &req->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007329 }
7330 }
7331
7332 out:
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007333 htx_to_buf(res_htx, &res->buf);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007334 return;
7335
7336 error:
7337
7338 /* If we are in HTTP mode, and we are not send any
7339 * data, return a 500 server error in best effort:
7340 * if there is no room available in the buffer,
7341 * just close the connection.
7342 */
7343 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
7344 struct buffer *err = &htx_err_chunks[HTTP_ERR_500];
7345
7346 channel_erase(res);
7347 res->buf.data = b_data(err);
7348 memcpy(res->buf.area, b_head(err), b_data(err));
7349 res_htx = htx_from_buf(&res->buf);
Christopher Fauletf6cce3f2019-02-27 21:20:09 +01007350 channel_add_input(res, res_htx->data);
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007351 }
7352 if (!(strm->flags & SF_ERR_MASK))
7353 strm->flags |= SF_ERR_RESOURCE;
7354 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7355 goto done;
7356}
7357
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007358static void hlua_applet_http_fct(struct appctx *ctx)
7359{
7360 struct stream_interface *si = ctx->owner;
7361 struct stream *strm = si_strm(si);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007362 struct channel *req = si_oc(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007363 struct channel *res = si_ic(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007364 struct act_rule *rule = ctx->rule;
7365 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007366 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
Willy Tarreau206ba832018-06-14 15:27:31 +02007367 const char *blk1;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02007368 size_t len1;
Willy Tarreau206ba832018-06-14 15:27:31 +02007369 const char *blk2;
Willy Tarreau55f3ce12018-07-18 11:49:27 +02007370 size_t len2;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007371 int ret;
7372
Christopher Faulet9c832fc2018-12-14 13:34:05 +01007373 if (IS_HTX_STRM(strm))
7374 return hlua_applet_htx_fct(ctx);
7375
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007376 /* If the stream is disconnect or closed, ldo nothing. */
7377 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007378 goto out;
7379
7380 /* Check if the input buffer is avalaible. */
7381 if (!b_size(&res->buf)) {
7382 si_rx_room_blk(si);
7383 goto out;
7384 }
7385 /* check that the output is not closed */
7386 if (res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_SHUTR))
7387 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007388
7389 /* Set the currently running flag. */
7390 if (!HLUA_IS_RUNNING(hlua) &&
7391 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007392 /* Store the max amount of bytes that we can read. */
7393 ctx->ctx.hlua_apphttp.left_bytes = strm->txn->req.body_len;
7394
7395 /* We need to flush the request header. This left the body
7396 * for the Lua.
7397 */
7398
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007399 /* Read the maximum amount of data available. */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007400 ret = co_getblk_nc(req, &blk1, &len1, &blk2, &len2);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007401 if (ret == -1)
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007402 goto out;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007403
7404 /* No data available, ask for more data. */
7405 if (ret == 1)
7406 len2 = 0;
7407 if (ret == 0)
7408 len1 = 0;
Thierry FOURNIER70d318c2018-06-30 10:37:33 +02007409 if (len1 + len2 < strm->txn->req.eoh + strm->txn->req.eol) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01007410 si_cant_get(si);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007411 goto out;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007412 }
7413
7414 /* skip the requests bytes. */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007415 co_skip(req, strm->txn->req.eoh + strm->txn->req.eol);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007416 }
7417
7418 /* Executes The applet if it is not done. */
7419 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
7420
7421 /* Execute the function. */
7422 switch (hlua_ctx_resume(hlua, 1)) {
7423 /* finished. */
7424 case HLUA_E_OK:
7425 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
7426 break;
7427
7428 /* yield. */
7429 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01007430 if (hlua->wake_time != TICK_ETERNITY)
7431 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007432 goto out;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007433
7434 /* finished with error. */
7435 case HLUA_E_ERRMSG:
7436 /* Display log. */
7437 SEND_ERR(px, "Lua applet http '%s': %s.\n",
7438 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
7439 lua_pop(hlua->T, 1);
7440 goto error;
7441
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007442 case HLUA_E_ETMOUT:
7443 SEND_ERR(px, "Lua applet http '%s': execution timeout.\n",
7444 rule->arg.hlua_rule->fcn.name);
7445 goto error;
7446
7447 case HLUA_E_NOMEM:
7448 SEND_ERR(px, "Lua applet http '%s': out of memory error.\n",
7449 rule->arg.hlua_rule->fcn.name);
7450 goto error;
7451
7452 case HLUA_E_YIELD: /* unexpected */
7453 SEND_ERR(px, "Lua applet http '%s': yield not allowed.\n",
7454 rule->arg.hlua_rule->fcn.name);
7455 goto error;
7456
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007457 case HLUA_E_ERR:
7458 /* Display log. */
7459 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\n",
7460 rule->arg.hlua_rule->fcn.name);
7461 goto error;
7462
7463 default:
7464 goto error;
7465 }
7466 }
7467
7468 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007469 if (ctx->ctx.hlua_apphttp.flags & APPLET_RSP_SENT)
7470 goto done;
7471
Christopher Fauletcc26b132018-12-18 21:20:57 +01007472 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT))
7473 goto error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007474
7475 /* We must send the final chunk. */
7476 if (ctx->ctx.hlua_apphttp.flags & APPLET_CHUNKED &&
7477 !(ctx->ctx.hlua_apphttp.flags & APPLET_LAST_CHK)) {
7478
7479 /* sent last chunk at once. */
Willy Tarreau06d80a92017-10-19 14:32:15 +02007480 ret = ci_putblk(res, "0\r\n\r\n", 5);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007481
7482 /* critical error. */
7483 if (ret == -2 || ret == -3) {
7484 SEND_ERR(px, "Lua applet http '%s'cannont send last chunk.\n",
7485 rule->arg.hlua_rule->fcn.name);
7486 goto error;
7487 }
7488
7489 /* no enough space error. */
7490 if (ret == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01007491 si_rx_room_blk(si);
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007492 goto out;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007493 }
7494
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007495 strm->txn->status = ctx->ctx.hlua_apphttp.status;
7496 ctx->ctx.hlua_apphttp.flags |= (APPLET_LAST_CHK|APPLET_RSP_SENT);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007497 }
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007498 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007499
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007500 done:
7501 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
7502 if (!(res->flags & CF_SHUTR)) {
7503 res->flags |= CF_READ_NULL;
7504 si_shutr(si);
7505 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007506
7507 /* eat the whole request */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007508 if (co_data(req))
7509 co_skip(req, co_data(req));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007510 }
7511
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007512 out:
7513 return;
7514
7515 error:
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007516
7517 /* If we are in HTTP mode, and we are not send any
7518 * data, return a 500 server error in best effort:
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007519 * if there is no room available in the buffer,
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007520 * just close the connection.
7521 */
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007522 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
7523 channel_erase(res);
7524 ci_putblk(res, error_500, strlen(error_500));
7525 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007526 if (!(strm->flags & SF_ERR_MASK))
7527 strm->flags |= SF_ERR_RESOURCE;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007528 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
Christopher Faulet56a3d6e2019-02-27 22:06:23 +01007529 goto done;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007530}
7531
7532static void hlua_applet_http_release(struct appctx *ctx)
7533{
Olivier Houchard3f795f72019-04-17 22:51:06 +02007534 task_destroy(ctx->ctx.hlua_apphttp.task);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007535 ctx->ctx.hlua_apphttp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007536 hlua_ctx_destroy(ctx->ctx.hlua_apphttp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007537 ctx->ctx.hlua_apphttp.hlua = NULL;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007538}
7539
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007540/* global {tcp|http}-request parser. Return ACT_RET_PRS_OK in
7541 * succes case, else return ACT_RET_PRS_ERR.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007542 *
7543 * This function can fail with an abort() due to an Lua critical error.
7544 * We are in the configuration parsing process of HAProxy, this abort() is
7545 * tolerated.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007546 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007547static enum act_parse_ret action_register_lua(const char **args, int *cur_arg, struct proxy *px,
7548 struct act_rule *rule, char **err)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007549{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007550 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007551 int i;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007552
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007553 /* Memory for the rule. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007554 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007555 if (!rule->arg.hlua_rule) {
7556 memprintf(err, "out of memory error");
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007557 return ACT_RET_PRS_ERR;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007558 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007559
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007560 /* Memory for arguments. */
7561 rule->arg.hlua_rule->args = calloc(fcn->nargs + 1, sizeof(char *));
7562 if (!rule->arg.hlua_rule->args) {
7563 memprintf(err, "out of memory error");
7564 return ACT_RET_PRS_ERR;
7565 }
7566
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007567 /* Reference the Lua function and store the reference. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007568 rule->arg.hlua_rule->fcn = *fcn;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007569
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007570 /* Expect some arguments */
7571 for (i = 0; i < fcn->nargs; i++) {
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007572 if (*args[*cur_arg] == '\0') {
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007573 memprintf(err, "expect %d arguments", fcn->nargs);
7574 return ACT_RET_PRS_ERR;
7575 }
Thierry FOURNIER1725c2e2019-01-06 19:38:49 +01007576 rule->arg.hlua_rule->args[i] = strdup(args[*cur_arg]);
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007577 if (!rule->arg.hlua_rule->args[i]) {
7578 memprintf(err, "out of memory error");
7579 return ACT_RET_PRS_ERR;
7580 }
7581 (*cur_arg)++;
7582 }
7583 rule->arg.hlua_rule->args[i] = NULL;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007584
Thierry FOURNIER42148732015-09-02 17:17:33 +02007585 rule->action = ACT_CUSTOM;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02007586 rule->action_ptr = hlua_action;
Thierry FOURNIERafa80492015-08-19 09:04:15 +02007587 return ACT_RET_PRS_OK;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01007588}
7589
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007590static enum act_parse_ret action_register_service_http(const char **args, int *cur_arg, struct proxy *px,
7591 struct act_rule *rule, char **err)
7592{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007593 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007594
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01007595 /* HTTP applets are forbidden in tcp-request rules.
7596 * HTTP applet request requires everything initilized by
7597 * "http_process_request" (analyzer flag AN_REQ_HTTP_INNER).
7598 * The applet will be immediately initilized, but its before
7599 * the call of this analyzer.
7600 */
7601 if (rule->from != ACT_F_HTTP_REQ) {
7602 memprintf(err, "HTTP applets are forbidden from 'tcp-request' rulesets");
7603 return ACT_RET_PRS_ERR;
7604 }
7605
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007606 /* Memory for the rule. */
7607 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7608 if (!rule->arg.hlua_rule) {
7609 memprintf(err, "out of memory error");
7610 return ACT_RET_PRS_ERR;
7611 }
7612
7613 /* Reference the Lua function and store the reference. */
7614 rule->arg.hlua_rule->fcn = *fcn;
7615
7616 /* TODO: later accept arguments. */
7617 rule->arg.hlua_rule->args = NULL;
7618
7619 /* Add applet pointer in the rule. */
7620 rule->applet.obj_type = OBJ_TYPE_APPLET;
7621 rule->applet.name = fcn->name;
7622 rule->applet.init = hlua_applet_http_init;
7623 rule->applet.fct = hlua_applet_http_fct;
7624 rule->applet.release = hlua_applet_http_release;
7625 rule->applet.timeout = hlua_timeout_applet;
7626
7627 return ACT_RET_PRS_OK;
7628}
7629
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007630/* This function is an LUA binding used for registering
7631 * "sample-conv" functions. It expects a converter name used
7632 * in the haproxy configuration file, and an LUA function.
7633 */
7634__LJMP static int hlua_register_action(lua_State *L)
7635{
7636 struct action_kw_list *akl;
7637 const char *name;
7638 int ref;
7639 int len;
7640 struct hlua_function *fcn;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007641 int nargs;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007642
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007643 /* Initialise the number of expected arguments at 0. */
7644 nargs = 0;
7645
7646 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
7647 WILL_LJMP(luaL_error(L, "'register_action' needs between 3 and 4 arguments"));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007648
7649 /* First argument : converter name. */
7650 name = MAY_LJMP(luaL_checkstring(L, 1));
7651
7652 /* Second argument : environment. */
7653 if (lua_type(L, 2) != LUA_TTABLE)
7654 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7655
7656 /* Third argument : lua function. */
7657 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7658
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007659 /* Fourth argument : number of mandatory arguments expected on the configuration line. */
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007660 if (lua_gettop(L) >= 4)
7661 nargs = MAY_LJMP(luaL_checkinteger(L, 4));
7662
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08007663 /* browse the second argument as an array. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007664 lua_pushnil(L);
7665 while (lua_next(L, 2) != 0) {
7666 if (lua_type(L, -1) != LUA_TSTRING)
7667 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
7668
7669 /* Check required environment. Only accepted "http" or "tcp". */
7670 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007671 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007672 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007673 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007674 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007675 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007676 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007677
7678 /* Fill fcn. */
7679 fcn->name = strdup(name);
7680 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007681 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007682 fcn->function_ref = ref;
7683
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01007684 /* Set the expected number od arguments. */
7685 fcn->nargs = nargs;
7686
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007687 /* List head */
7688 akl->list.n = akl->list.p = NULL;
7689
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007690 /* action keyword. */
7691 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02007692 akl->kw[0].kw = calloc(1, len);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007693 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007694 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007695
7696 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7697
7698 akl->kw[0].match_pfx = 0;
7699 akl->kw[0].private = fcn;
7700 akl->kw[0].parse = action_register_lua;
7701
7702 /* select the action registering point. */
7703 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0)
7704 tcp_req_cont_keywords_register(akl);
7705 else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0)
7706 tcp_res_cont_keywords_register(akl);
7707 else if (strcmp(lua_tostring(L, -1), "http-req") == 0)
7708 http_req_keywords_register(akl);
7709 else if (strcmp(lua_tostring(L, -1), "http-res") == 0)
7710 http_res_keywords_register(akl);
7711 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007712 WILL_LJMP(luaL_error(L, "Lua action environment '%s' is unknown. "
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007713 "'tcp-req', 'tcp-res', 'http-req' or 'http-res' "
7714 "are expected.", lua_tostring(L, -1)));
7715
7716 /* pop the environment string. */
7717 lua_pop(L, 1);
7718 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007719 return ACT_RET_PRS_OK;
7720}
7721
7722static enum act_parse_ret action_register_service_tcp(const char **args, int *cur_arg, struct proxy *px,
7723 struct act_rule *rule, char **err)
7724{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02007725 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007726
Christopher Fauleteb709802019-04-11 22:04:08 +02007727 if (px->mode == PR_MODE_HTTP && (px->options2 & PR_O2_USE_HTX)) {
Christopher Fauletafd8f102018-11-08 11:34:21 +01007728 memprintf(err, "Lua services cannot be used when the HTX internal representation is enabled");
7729 return ACT_RET_PRS_ERR;
7730 }
7731
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007732 /* Memory for the rule. */
7733 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
7734 if (!rule->arg.hlua_rule) {
7735 memprintf(err, "out of memory error");
7736 return ACT_RET_PRS_ERR;
7737 }
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007738
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007739 /* Reference the Lua function and store the reference. */
7740 rule->arg.hlua_rule->fcn = *fcn;
7741
7742 /* TODO: later accept arguments. */
7743 rule->arg.hlua_rule->args = NULL;
7744
7745 /* Add applet pointer in the rule. */
7746 rule->applet.obj_type = OBJ_TYPE_APPLET;
7747 rule->applet.name = fcn->name;
7748 rule->applet.init = hlua_applet_tcp_init;
7749 rule->applet.fct = hlua_applet_tcp_fct;
7750 rule->applet.release = hlua_applet_tcp_release;
7751 rule->applet.timeout = hlua_timeout_applet;
7752
7753 return 0;
7754}
7755
7756/* This function is an LUA binding used for registering
7757 * "sample-conv" functions. It expects a converter name used
7758 * in the haproxy configuration file, and an LUA function.
7759 */
7760__LJMP static int hlua_register_service(lua_State *L)
7761{
7762 struct action_kw_list *akl;
7763 const char *name;
7764 const char *env;
7765 int ref;
7766 int len;
7767 struct hlua_function *fcn;
7768
7769 MAY_LJMP(check_args(L, 3, "register_service"));
7770
7771 /* First argument : converter name. */
7772 name = MAY_LJMP(luaL_checkstring(L, 1));
7773
7774 /* Second argument : environment. */
7775 env = MAY_LJMP(luaL_checkstring(L, 2));
7776
7777 /* Third argument : lua function. */
7778 ref = MAY_LJMP(hlua_checkfunction(L, 3));
7779
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007780 /* Allocate and fill the sample fetch keyword struct. */
7781 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
7782 if (!akl)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007783 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007784 fcn = calloc(1, sizeof(*fcn));
7785 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007786 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007787
7788 /* Fill fcn. */
7789 len = strlen("<lua.>") + strlen(name) + 1;
7790 fcn->name = calloc(1, len);
7791 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007792 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007793 snprintf((char *)fcn->name, len, "<lua.%s>", name);
7794 fcn->function_ref = ref;
7795
7796 /* List head */
7797 akl->list.n = akl->list.p = NULL;
7798
7799 /* converter keyword. */
7800 len = strlen("lua.") + strlen(name) + 1;
7801 akl->kw[0].kw = calloc(1, len);
7802 if (!akl->kw[0].kw)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007803 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007804
7805 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
7806
Thierry FOURNIER / OZON.IO02564fd2016-11-12 11:07:05 +01007807 /* Check required environment. Only accepted "http" or "tcp". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007808 if (strcmp(env, "tcp") == 0)
7809 akl->kw[0].parse = action_register_service_tcp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007810 else if (strcmp(env, "http") == 0)
7811 akl->kw[0].parse = action_register_service_http;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007812 else
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01007813 WILL_LJMP(luaL_error(L, "Lua service environment '%s' is unknown. "
Eric Salamafe7456f2017-12-21 14:30:07 +01007814 "'tcp' or 'http' are expected.", env));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007815
7816 akl->kw[0].match_pfx = 0;
7817 akl->kw[0].private = fcn;
7818
7819 /* End of array. */
7820 memset(&akl->kw[1], 0, sizeof(*akl->kw));
7821
7822 /* Register this new converter */
7823 service_keywords_register(akl);
7824
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007825 return 0;
7826}
7827
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007828/* This function initialises Lua cli handler. It copies the
7829 * arguments in the Lua stack and create channel IO objects.
7830 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02007831static int hlua_cli_parse_fct(char **args, char *payload, struct appctx *appctx, void *private)
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007832{
7833 struct hlua *hlua;
7834 struct hlua_function *fcn;
7835 int i;
7836 const char *error;
7837
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007838 fcn = private;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007839 appctx->ctx.hlua_cli.fcn = private;
7840
Willy Tarreaubafbe012017-11-24 17:34:44 +01007841 hlua = pool_alloc(pool_head_hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007842 if (!hlua) {
7843 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007844 return 1;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007845 }
7846 HLUA_INIT(hlua);
7847 appctx->ctx.hlua_cli.hlua = hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007848
7849 /* Create task used by signal to wakeup applets.
7850 * We use the same wakeup fonction than the Lua applet_tcp and
7851 * applet_http. It is absolutely compatible.
7852 */
Willy Tarreau5f4a47b2017-10-31 15:59:32 +01007853 appctx->ctx.hlua_cli.task = task_new(tid_bit);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007854 if (!appctx->ctx.hlua_cli.task) {
Thierry FOURNIERffbf5692016-12-16 11:14:06 +01007855 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007856 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007857 }
7858 appctx->ctx.hlua_cli.task->nice = 0;
7859 appctx->ctx.hlua_cli.task->context = appctx;
7860 appctx->ctx.hlua_cli.task->process = hlua_applet_wakeup;
7861
7862 /* Initialises the Lua context */
Thierry FOURNIERbf90ce12019-01-06 19:04:24 +01007863 if (!hlua_ctx_init(hlua, appctx->ctx.hlua_cli.task, 0)) {
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007864 SEND_ERR(NULL, "Lua cli '%s': can't initialize Lua context.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007865 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007866 }
7867
7868 /* The following Lua calls can fail. */
7869 if (!SET_SAFE_LJMP(hlua->T)) {
7870 if (lua_type(hlua->T, -1) == LUA_TSTRING)
7871 error = lua_tostring(hlua->T, -1);
7872 else
7873 error = "critical error";
7874 SEND_ERR(NULL, "Lua cli '%s': %s.\n", fcn->name, error);
7875 goto error;
7876 }
7877
7878 /* Check stack available size. */
7879 if (!lua_checkstack(hlua->T, 2)) {
7880 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7881 goto error;
7882 }
7883
7884 /* Restore the function in the stack. */
7885 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
7886
7887 /* Once the arguments parsed, the CLI is like an AppletTCP,
7888 * so push AppletTCP in the stack.
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007889 */
7890 if (!hlua_applet_tcp_new(hlua->T, appctx)) {
7891 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7892 goto error;
7893 }
7894 hlua->nargs = 1;
7895
7896 /* push keywords in the stack. */
7897 for (i = 0; *args[i]; i++) {
7898 /* Check stack available size. */
7899 if (!lua_checkstack(hlua->T, 1)) {
7900 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
7901 goto error;
7902 }
7903 lua_pushstring(hlua->T, args[i]);
7904 hlua->nargs++;
7905 }
7906
7907 /* We must initialize the execution timeouts. */
7908 hlua->max_time = hlua_timeout_session;
7909
7910 /* At this point the execution is safe. */
7911 RESET_SAFE_LJMP(hlua->T);
7912
7913 /* It's ok */
7914 return 0;
7915
7916 /* It's not ok. */
7917error:
7918 RESET_SAFE_LJMP(hlua->T);
7919 hlua_ctx_destroy(hlua);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01007920 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007921 return 1;
7922}
7923
7924static int hlua_cli_io_handler_fct(struct appctx *appctx)
7925{
7926 struct hlua *hlua;
7927 struct stream_interface *si;
7928 struct hlua_function *fcn;
7929
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007930 hlua = appctx->ctx.hlua_cli.hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007931 si = appctx->owner;
Willy Tarreau8ae4f752016-12-14 15:41:45 +01007932 fcn = appctx->ctx.hlua_cli.fcn;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007933
7934 /* If the stream is disconnect or closed, ldo nothing. */
7935 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
7936 return 1;
7937
7938 /* Execute the function. */
7939 switch (hlua_ctx_resume(hlua, 1)) {
7940
7941 /* finished. */
7942 case HLUA_E_OK:
7943 return 1;
7944
7945 /* yield. */
7946 case HLUA_E_AGAIN:
7947 /* We want write. */
7948 if (HLUA_IS_WAKERESWR(hlua))
Willy Tarreaudb398432018-11-15 11:08:52 +01007949 si_rx_room_blk(si);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007950 /* Set the timeout. */
7951 if (hlua->wake_time != TICK_ETERNITY)
7952 task_schedule(hlua->task, hlua->wake_time);
7953 return 0;
7954
7955 /* finished with error. */
7956 case HLUA_E_ERRMSG:
7957 /* Display log. */
7958 SEND_ERR(NULL, "Lua cli '%s': %s.\n",
7959 fcn->name, lua_tostring(hlua->T, -1));
7960 lua_pop(hlua->T, 1);
7961 return 1;
7962
Thierry Fournierd5b073c2018-05-21 19:42:47 +02007963 case HLUA_E_ETMOUT:
7964 SEND_ERR(NULL, "Lua converter '%s': execution timeout.\n",
7965 fcn->name);
7966 return 1;
7967
7968 case HLUA_E_NOMEM:
7969 SEND_ERR(NULL, "Lua converter '%s': out of memory error.\n",
7970 fcn->name);
7971 return 1;
7972
7973 case HLUA_E_YIELD: /* unexpected */
7974 SEND_ERR(NULL, "Lua converter '%s': yield not allowed.\n",
7975 fcn->name);
7976 return 1;
7977
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007978 case HLUA_E_ERR:
7979 /* Display log. */
7980 SEND_ERR(NULL, "Lua cli '%s' return an unknown error.\n",
7981 fcn->name);
7982 return 1;
7983
7984 default:
7985 return 1;
7986 }
7987
7988 return 1;
7989}
7990
7991static void hlua_cli_io_release_fct(struct appctx *appctx)
7992{
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007993 hlua_ctx_destroy(appctx->ctx.hlua_cli.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007994 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007995}
7996
7997/* This function is an LUA binding used for registering
7998 * new keywords in the cli. It expects a list of keywords
7999 * which are the "path". It is limited to 5 keywords. A
8000 * description of the command, a function to be executed
8001 * for the parsing and a function for io handlers.
8002 */
8003__LJMP static int hlua_register_cli(lua_State *L)
8004{
8005 struct cli_kw_list *cli_kws;
8006 const char *message;
8007 int ref_io;
8008 int len;
8009 struct hlua_function *fcn;
8010 int index;
8011 int i;
8012
8013 MAY_LJMP(check_args(L, 3, "register_cli"));
8014
8015 /* First argument : an array of maximum 5 keywords. */
8016 if (!lua_istable(L, 1))
8017 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table"));
8018
8019 /* Second argument : string with contextual message. */
8020 message = MAY_LJMP(luaL_checkstring(L, 2));
8021
8022 /* Third and fourth argument : lua function. */
8023 ref_io = MAY_LJMP(hlua_checkfunction(L, 3));
8024
8025 /* Allocate and fill the sample fetch keyword struct. */
8026 cli_kws = calloc(1, sizeof(*cli_kws) + sizeof(struct cli_kw) * 2);
8027 if (!cli_kws)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008028 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008029 fcn = calloc(1, sizeof(*fcn));
8030 if (!fcn)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008031 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008032
8033 /* Fill path. */
8034 index = 0;
8035 lua_pushnil(L);
8036 while(lua_next(L, 1) != 0) {
8037 if (index >= 5)
8038 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
8039 if (lua_type(L, -1) != LUA_TSTRING)
8040 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
8041 cli_kws->kw[0].str_kw[index] = strdup(lua_tostring(L, -1));
8042 if (!cli_kws->kw[0].str_kw[index])
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008043 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008044 index++;
8045 lua_pop(L, 1);
8046 }
8047
8048 /* Copy help message. */
8049 cli_kws->kw[0].usage = strdup(message);
8050 if (!cli_kws->kw[0].usage)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008051 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008052
8053 /* Fill fcn io handler. */
8054 len = strlen("<lua.cli>") + 1;
8055 for (i = 0; i < index; i++)
8056 len += strlen(cli_kws->kw[0].str_kw[i]) + 1;
8057 fcn->name = calloc(1, len);
8058 if (!fcn->name)
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008059 WILL_LJMP(luaL_error(L, "Lua out of memory error."));
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008060 strncat((char *)fcn->name, "<lua.cli", len);
8061 for (i = 0; i < index; i++) {
8062 strncat((char *)fcn->name, ".", len);
8063 strncat((char *)fcn->name, cli_kws->kw[0].str_kw[i], len);
8064 }
8065 strncat((char *)fcn->name, ">", len);
8066 fcn->function_ref = ref_io;
8067
8068 /* Fill last entries. */
8069 cli_kws->kw[0].private = fcn;
8070 cli_kws->kw[0].parse = hlua_cli_parse_fct;
8071 cli_kws->kw[0].io_handler = hlua_cli_io_handler_fct;
8072 cli_kws->kw[0].io_release = hlua_cli_io_release_fct;
8073
8074 /* Register this new converter */
8075 cli_register_kw(cli_kws);
8076
8077 return 0;
8078}
8079
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008080static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx,
8081 struct proxy *defpx, const char *file, int line,
8082 char **err, unsigned int *timeout)
8083{
8084 const char *error;
8085
8086 error = parse_time_err(args[1], timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02008087 if (error == PARSE_TIME_OVER) {
8088 memprintf(err, "timer overflow in argument <%s> to <%s> (maximum value is 2147483647 ms or ~24.8 days)",
8089 args[1], args[0]);
8090 return -1;
8091 }
8092 else if (error == PARSE_TIME_UNDER) {
8093 memprintf(err, "timer underflow in argument <%s> to <%s> (minimum non-null value is 1 ms)",
8094 args[1], args[0]);
8095 return -1;
8096 }
8097 else if (error) {
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008098 memprintf(err, "%s: invalid timeout", args[0]);
8099 return -1;
8100 }
8101 return 0;
8102}
8103
8104static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx,
8105 struct proxy *defpx, const char *file, int line,
8106 char **err)
8107{
8108 return hlua_read_timeout(args, section_type, curpx, defpx,
8109 file, line, err, &hlua_timeout_session);
8110}
8111
8112static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx,
8113 struct proxy *defpx, const char *file, int line,
8114 char **err)
8115{
8116 return hlua_read_timeout(args, section_type, curpx, defpx,
8117 file, line, err, &hlua_timeout_task);
8118}
8119
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008120static int hlua_applet_timeout(char **args, int section_type, struct proxy *curpx,
8121 struct proxy *defpx, const char *file, int line,
8122 char **err)
8123{
8124 return hlua_read_timeout(args, section_type, curpx, defpx,
8125 file, line, err, &hlua_timeout_applet);
8126}
8127
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008128static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx,
8129 struct proxy *defpx, const char *file, int line,
8130 char **err)
8131{
8132 char *error;
8133
8134 hlua_nb_instruction = strtoll(args[1], &error, 10);
8135 if (*error != '\0') {
8136 memprintf(err, "%s: invalid number", args[0]);
8137 return -1;
8138 }
8139 return 0;
8140}
8141
Willy Tarreau32f61e22015-03-18 17:54:59 +01008142static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx,
8143 struct proxy *defpx, const char *file, int line,
8144 char **err)
8145{
8146 char *error;
8147
8148 if (*(args[1]) == 0) {
8149 memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]);
8150 return -1;
8151 }
8152 hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L;
8153 if (*error != '\0') {
8154 memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error);
8155 return -1;
8156 }
8157 return 0;
8158}
8159
8160
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008161/* This function is called by the main configuration key "lua-load". It loads and
8162 * execute an lua file during the parsing of the HAProxy configuration file. It is
8163 * the main lua entry point.
8164 *
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008165 * This function runs with the HAProxy keywords API. It returns -1 if an error
8166 * occurs, otherwise it returns 0.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008167 *
8168 * In some error case, LUA set an error message in top of the stack. This function
8169 * returns this error message in the HAProxy logs and pop it from the stack.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008170 *
8171 * This function can fail with an abort() due to an Lua critical error.
8172 * We are in the configuration parsing process of HAProxy, this abort() is
8173 * tolerated.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008174 */
8175static int hlua_load(char **args, int section_type, struct proxy *curpx,
8176 struct proxy *defpx, const char *file, int line,
8177 char **err)
8178{
8179 int error;
8180
8181 /* Just load and compile the file. */
8182 error = luaL_loadfile(gL.T, args[1]);
8183 if (error) {
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008184 memprintf(err, "error in Lua file '%s': %s", args[1], lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008185 lua_pop(gL.T, 1);
8186 return -1;
8187 }
8188
8189 /* If no syntax error where detected, execute the code. */
8190 error = lua_pcall(gL.T, 0, LUA_MULTRET, 0);
8191 switch (error) {
8192 case LUA_OK:
8193 break;
8194 case LUA_ERRRUN:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008195 memprintf(err, "Lua runtime error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008196 lua_pop(gL.T, 1);
8197 return -1;
8198 case LUA_ERRMEM:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008199 memprintf(err, "Lua out of memory error.n");
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008200 return -1;
8201 case LUA_ERRERR:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008202 memprintf(err, "Lua message handler error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008203 lua_pop(gL.T, 1);
8204 return -1;
8205 case LUA_ERRGCMM:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008206 memprintf(err, "Lua garbage collector error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008207 lua_pop(gL.T, 1);
8208 return -1;
8209 default:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008210 memprintf(err, "Lua unknonwn error: %s\n", lua_tostring(gL.T, -1));
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008211 lua_pop(gL.T, 1);
8212 return -1;
8213 }
8214
8215 return 0;
8216}
8217
8218/* configuration keywords declaration */
8219static struct cfg_kw_list cfg_kws = {{ },{
Thierry FOURNIERbd413492015-03-03 16:52:26 +01008220 { CFG_GLOBAL, "lua-load", hlua_load },
8221 { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout },
8222 { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout },
Thierry FOURNIER56da1012015-10-01 08:42:31 +02008223 { CFG_GLOBAL, "tune.lua.service-timeout", hlua_applet_timeout },
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01008224 { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield },
Willy Tarreau32f61e22015-03-18 17:54:59 +01008225 { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem },
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01008226 { 0, NULL, NULL },
8227}};
8228
Willy Tarreau0108d902018-11-25 19:14:37 +01008229INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
8230
Christopher Fauletafd8f102018-11-08 11:34:21 +01008231
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008232/* This function can fail with an abort() due to an Lua critical error.
8233 * We are in the initialisation process of HAProxy, this abort() is
8234 * tolerated.
8235 */
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008236int hlua_post_init()
8237{
8238 struct hlua_init_function *init;
8239 const char *msg;
8240 enum hlua_exec ret;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008241 const char *error;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008242
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008243 /* Call post initialisation function in safe environement. */
8244 if (!SET_SAFE_LJMP(gL.T)) {
8245 if (lua_type(gL.T, -1) == LUA_TSTRING)
8246 error = lua_tostring(gL.T, -1);
8247 else
8248 error = "critical error";
8249 fprintf(stderr, "Lua post-init: %s.\n", error);
8250 exit(1);
8251 }
Frédéric Lécaille54f2bcf2018-08-29 13:46:24 +02008252
8253#if USE_OPENSSL
8254 /* Initialize SSL server. */
8255 if (socket_ssl.xprt->prepare_srv) {
8256 int saved_used_backed = global.ssl_used_backend;
8257 // don't affect maxconn automatic computation
8258 socket_ssl.xprt->prepare_srv(&socket_ssl);
8259 global.ssl_used_backend = saved_used_backed;
8260 }
8261#endif
8262
Thierry Fournier3d4a6752016-02-19 20:53:30 +01008263 hlua_fcn_post_init(gL.T);
8264 RESET_SAFE_LJMP(gL.T);
8265
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008266 list_for_each_entry(init, &hlua_init_functions, l) {
8267 lua_rawgeti(gL.T, LUA_REGISTRYINDEX, init->function_ref);
8268 ret = hlua_ctx_resume(&gL, 0);
8269 switch (ret) {
8270 case HLUA_E_OK:
8271 lua_pop(gL.T, -1);
8272 return 1;
8273 case HLUA_E_AGAIN:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008274 ha_alert("Lua init: yield not allowed.\n");
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008275 return 0;
8276 case HLUA_E_ERRMSG:
8277 msg = lua_tostring(gL.T, -1);
Christopher Faulet767a84b2017-11-24 16:50:31 +01008278 ha_alert("lua init: %s.\n", msg);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008279 return 0;
8280 case HLUA_E_ERR:
8281 default:
Thierry FOURNIER2986c0d2018-02-25 14:32:36 +01008282 ha_alert("Lua init: unknown runtime error.\n");
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008283 return 0;
8284 }
8285 }
8286 return 1;
8287}
8288
Willy Tarreau32f61e22015-03-18 17:54:59 +01008289/* The memory allocator used by the Lua stack. <ud> is a pointer to the
8290 * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize>
8291 * is the previously allocated size or the kind of object in case of a new
8292 * allocation. <nsize> is the requested new size.
8293 */
8294static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
8295{
8296 struct hlua_mem_allocator *zone = ud;
8297
8298 if (nsize == 0) {
8299 /* it's a free */
8300 if (ptr)
8301 zone->allocated -= osize;
8302 free(ptr);
8303 return NULL;
8304 }
8305
8306 if (!ptr) {
8307 /* it's a new allocation */
8308 if (zone->limit && zone->allocated + nsize > zone->limit)
8309 return NULL;
8310
8311 ptr = malloc(nsize);
8312 if (ptr)
8313 zone->allocated += nsize;
8314 return ptr;
8315 }
8316
8317 /* it's a realloc */
8318 if (zone->limit && zone->allocated + nsize - osize > zone->limit)
8319 return NULL;
8320
8321 ptr = realloc(ptr, nsize);
8322 if (ptr)
8323 zone->allocated += nsize - osize;
8324 return ptr;
8325}
8326
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008327/* Ithis function can fail with an abort() due to an Lua critical error.
8328 * We are in the initialisation process of HAProxy, this abort() is
8329 * tolerated.
8330 */
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008331void hlua_init(void)
8332{
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008333 int i;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008334 int idx;
8335 struct sample_fetch *sf;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008336 struct sample_conv *sc;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008337 char *p;
Thierry Fournierfd107a22016-02-19 19:57:23 +01008338 const char *error_msg;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008339#ifdef USE_OPENSSL
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008340 struct srv_kw *kw;
8341 int tmp_error;
8342 char *error;
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008343 char *args[] = { /* SSL client configuration. */
8344 "ssl",
8345 "verify",
8346 "none",
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008347 NULL
8348 };
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008349#endif
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008350
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008351 /* Init main lua stack. */
8352 gL.Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01008353 gL.flags = 0;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01008354 LIST_INIT(&gL.com);
Willy Tarreau42ef75f2017-04-12 21:40:29 +02008355 gL.T = lua_newstate(hlua_alloc, &hlua_global_allocator);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008356 hlua_sethlua(&gL);
8357 gL.Tref = LUA_REFNIL;
8358 gL.task = NULL;
8359
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008360 /* From this point, until the end of the initialisation function,
Thierry FOURNIERbabae282015-09-17 11:36:37 +02008361 * the Lua function can fail with an abort. We are in the initialisation
8362 * process of HAProxy, this abort() is tolerated.
8363 */
8364
Thierry FOURNIER380d0932015-01-23 14:27:52 +01008365 /* Initialise lua. */
8366 luaL_openlibs(gL.T);
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008367
Thierry Fournier75933d42016-01-21 09:30:18 +01008368 /* Set safe environment for the initialisation. */
8369 if (!SET_SAFE_LJMP(gL.T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01008370 if (lua_type(gL.T, -1) == LUA_TSTRING)
8371 error_msg = lua_tostring(gL.T, -1);
8372 else
8373 error_msg = "critical error";
8374 fprintf(stderr, "Lua init: %s.\n", error_msg);
Thierry Fournier75933d42016-01-21 09:30:18 +01008375 exit(1);
8376 }
8377
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008378 /*
8379 *
8380 * Create "core" object.
8381 *
8382 */
8383
Thierry FOURNIERa2d8c652015-03-11 17:29:39 +01008384 /* This table entry is the object "core" base. */
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008385 lua_newtable(gL.T);
8386
8387 /* Push the loglevel constants. */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01008388 for (i = 0; i < NB_LOG_LEVELS; i++)
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008389 hlua_class_const_int(gL.T, log_levels[i], i);
8390
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008391 /* Register special functions. */
8392 hlua_class_function(gL.T, "register_init", hlua_register_init);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01008393 hlua_class_function(gL.T, "register_task", hlua_register_task);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01008394 hlua_class_function(gL.T, "register_fetches", hlua_register_fetches);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01008395 hlua_class_function(gL.T, "register_converters", hlua_register_converters);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02008396 hlua_class_function(gL.T, "register_action", hlua_register_action);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008397 hlua_class_function(gL.T, "register_service", hlua_register_service);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01008398 hlua_class_function(gL.T, "register_cli", hlua_register_cli);
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01008399 hlua_class_function(gL.T, "yield", hlua_yield);
Willy Tarreau59551662015-03-10 14:23:13 +01008400 hlua_class_function(gL.T, "set_nice", hlua_set_nice);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01008401 hlua_class_function(gL.T, "sleep", hlua_sleep);
8402 hlua_class_function(gL.T, "msleep", hlua_msleep);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01008403 hlua_class_function(gL.T, "add_acl", hlua_add_acl);
8404 hlua_class_function(gL.T, "del_acl", hlua_del_acl);
8405 hlua_class_function(gL.T, "set_map", hlua_set_map);
8406 hlua_class_function(gL.T, "del_map", hlua_del_map);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008407 hlua_class_function(gL.T, "tcp", hlua_socket_new);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01008408 hlua_class_function(gL.T, "log", hlua_log);
8409 hlua_class_function(gL.T, "Debug", hlua_log_debug);
8410 hlua_class_function(gL.T, "Info", hlua_log_info);
8411 hlua_class_function(gL.T, "Warning", hlua_log_warning);
8412 hlua_class_function(gL.T, "Alert", hlua_log_alert);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02008413 hlua_class_function(gL.T, "done", hlua_done);
Thierry Fournierfb0b5462016-01-21 09:28:58 +01008414 hlua_fcn_reg_core_fcn(gL.T);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01008415
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01008416 lua_setglobal(gL.T, "core");
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008417
8418 /*
8419 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008420 * Register class Map
8421 *
8422 */
8423
8424 /* This table entry is the object "Map" base. */
8425 lua_newtable(gL.T);
8426
8427 /* register pattern types. */
8428 for (i=0; i<PAT_MATCH_NUM; i++)
8429 hlua_class_const_int(gL.T, pat_match_names[i], i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008430 for (i=0; i<PAT_MATCH_NUM; i++) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008431 snprintf(trash.area, trash.size, "_%s", pat_match_names[i]);
8432 hlua_class_const_int(gL.T, trash.area, i);
Thierry FOURNIER4dc71972017-01-28 08:33:08 +01008433 }
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008434
8435 /* register constructor. */
8436 hlua_class_function(gL.T, "new", hlua_map_new);
8437
8438 /* Create and fill the metatable. */
8439 lua_newtable(gL.T);
8440
8441 /* Create and fille the __index entry. */
8442 lua_pushstring(gL.T, "__index");
8443 lua_newtable(gL.T);
8444
8445 /* Register . */
8446 hlua_class_function(gL.T, "lookup", hlua_map_lookup);
8447 hlua_class_function(gL.T, "slookup", hlua_map_slookup);
8448
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008449 lua_rawset(gL.T, -3);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008450
Thierry Fournier45e78d72016-02-19 18:34:46 +01008451 /* Register previous table in the registry with reference and named entry.
8452 * The function hlua_register_metatable() pops the stack, so we
8453 * previously create a copy of the table.
8454 */
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008455 lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008456 class_map_ref = hlua_register_metatable(gL.T, CLASS_MAP);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02008457
8458 /* Assign the metatable to the mai Map object. */
8459 lua_setmetatable(gL.T, -2);
8460
8461 /* Set a name to the table. */
8462 lua_setglobal(gL.T, "Map");
8463
8464 /*
8465 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008466 * Register class Channel
8467 *
8468 */
8469
8470 /* Create and fill the metatable. */
8471 lua_newtable(gL.T);
8472
8473 /* Create and fille the __index entry. */
8474 lua_pushstring(gL.T, "__index");
8475 lua_newtable(gL.T);
8476
8477 /* Register . */
8478 hlua_class_function(gL.T, "get", hlua_channel_get);
8479 hlua_class_function(gL.T, "dup", hlua_channel_dup);
8480 hlua_class_function(gL.T, "getline", hlua_channel_getline);
8481 hlua_class_function(gL.T, "set", hlua_channel_set);
8482 hlua_class_function(gL.T, "append", hlua_channel_append);
8483 hlua_class_function(gL.T, "send", hlua_channel_send);
8484 hlua_class_function(gL.T, "forward", hlua_channel_forward);
8485 hlua_class_function(gL.T, "get_in_len", hlua_channel_get_in_len);
8486 hlua_class_function(gL.T, "get_out_len", hlua_channel_get_out_len);
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01008487 hlua_class_function(gL.T, "is_full", hlua_channel_is_full);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008488
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008489 lua_rawset(gL.T, -3);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008490
8491 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008492 class_channel_ref = hlua_register_metatable(gL.T, CLASS_CHANNEL);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01008493
8494 /*
8495 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008496 * Register class Fetches
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008497 *
8498 */
8499
8500 /* Create and fill the metatable. */
8501 lua_newtable(gL.T);
8502
8503 /* Create and fille the __index entry. */
8504 lua_pushstring(gL.T, "__index");
8505 lua_newtable(gL.T);
8506
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008507 /* Browse existing fetches and create the associated
8508 * object method.
8509 */
8510 sf = NULL;
8511 while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) {
8512
8513 /* Dont register the keywork if the arguments check function are
8514 * not safe during the runtime.
8515 */
8516 if ((sf->val_args != NULL) &&
8517 (sf->val_args != val_payload_lv) &&
8518 (sf->val_args != val_hdr))
8519 continue;
8520
8521 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8522 * by an underscore.
8523 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008524 strncpy(trash.area, sf->kw, trash.size);
8525 trash.area[trash.size - 1] = '\0';
8526 for (p = trash.area; *p; p++)
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008527 if (*p == '.' || *p == '-' || *p == '+')
8528 *p = '_';
8529
8530 /* Register the function. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008531 lua_pushstring(gL.T, trash.area);
Willy Tarreau2ec22742015-03-10 14:27:20 +01008532 lua_pushlightuserdata(gL.T, sf);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008533 lua_pushcclosure(gL.T, hlua_run_sample_fetch, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008534 lua_rawset(gL.T, -3);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01008535 }
8536
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008537 lua_rawset(gL.T, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008538
8539 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008540 class_fetches_ref = hlua_register_metatable(gL.T, CLASS_FETCHES);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008541
8542 /*
8543 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008544 * Register class Converters
8545 *
8546 */
8547
8548 /* Create and fill the metatable. */
8549 lua_newtable(gL.T);
8550
8551 /* Create and fill the __index entry. */
8552 lua_pushstring(gL.T, "__index");
8553 lua_newtable(gL.T);
8554
8555 /* Browse existing converters and create the associated
8556 * object method.
8557 */
8558 sc = NULL;
8559 while ((sc = sample_conv_getnext(sc, &idx)) != NULL) {
8560 /* Dont register the keywork if the arguments check function are
8561 * not safe during the runtime.
8562 */
8563 if (sc->val_args != NULL)
8564 continue;
8565
8566 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
8567 * by an underscore.
8568 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008569 strncpy(trash.area, sc->kw, trash.size);
8570 trash.area[trash.size - 1] = '\0';
8571 for (p = trash.area; *p; p++)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008572 if (*p == '.' || *p == '-' || *p == '+')
8573 *p = '_';
8574
8575 /* Register the function. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02008576 lua_pushstring(gL.T, trash.area);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008577 lua_pushlightuserdata(gL.T, sc);
8578 lua_pushcclosure(gL.T, hlua_run_sample_conv, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008579 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008580 }
8581
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008582 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008583
8584 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008585 class_converters_ref = hlua_register_metatable(gL.T, CLASS_CONVERTERS);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01008586
8587 /*
8588 *
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008589 * Register class HTTP
8590 *
8591 */
8592
8593 /* Create and fill the metatable. */
8594 lua_newtable(gL.T);
8595
8596 /* Create and fille the __index entry. */
8597 lua_pushstring(gL.T, "__index");
8598 lua_newtable(gL.T);
8599
8600 /* Register Lua functions. */
8601 hlua_class_function(gL.T, "req_get_headers",hlua_http_req_get_headers);
8602 hlua_class_function(gL.T, "req_del_header", hlua_http_req_del_hdr);
8603 hlua_class_function(gL.T, "req_rep_header", hlua_http_req_rep_hdr);
8604 hlua_class_function(gL.T, "req_rep_value", hlua_http_req_rep_val);
8605 hlua_class_function(gL.T, "req_add_header", hlua_http_req_add_hdr);
8606 hlua_class_function(gL.T, "req_set_header", hlua_http_req_set_hdr);
8607 hlua_class_function(gL.T, "req_set_method", hlua_http_req_set_meth);
8608 hlua_class_function(gL.T, "req_set_path", hlua_http_req_set_path);
8609 hlua_class_function(gL.T, "req_set_query", hlua_http_req_set_query);
8610 hlua_class_function(gL.T, "req_set_uri", hlua_http_req_set_uri);
8611
8612 hlua_class_function(gL.T, "res_get_headers",hlua_http_res_get_headers);
8613 hlua_class_function(gL.T, "res_del_header", hlua_http_res_del_hdr);
8614 hlua_class_function(gL.T, "res_rep_header", hlua_http_res_rep_hdr);
8615 hlua_class_function(gL.T, "res_rep_value", hlua_http_res_rep_val);
8616 hlua_class_function(gL.T, "res_add_header", hlua_http_res_add_hdr);
8617 hlua_class_function(gL.T, "res_set_header", hlua_http_res_set_hdr);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02008618 hlua_class_function(gL.T, "res_set_status", hlua_http_res_set_status);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008619
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008620 lua_rawset(gL.T, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008621
8622 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008623 class_http_ref = hlua_register_metatable(gL.T, CLASS_HTTP);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01008624
8625 /*
8626 *
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008627 * Register class AppletTCP
8628 *
8629 */
8630
8631 /* Create and fill the metatable. */
8632 lua_newtable(gL.T);
8633
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008634 /* Create and fille the __index entry. */
8635 lua_pushstring(gL.T, "__index");
8636 lua_newtable(gL.T);
8637
8638 /* Register Lua functions. */
Thierry FOURNIER / OZON.IO3e1d7912016-12-12 12:29:34 +01008639 hlua_class_function(gL.T, "getline", hlua_applet_tcp_getline);
8640 hlua_class_function(gL.T, "receive", hlua_applet_tcp_recv);
8641 hlua_class_function(gL.T, "send", hlua_applet_tcp_send);
8642 hlua_class_function(gL.T, "set_priv", hlua_applet_tcp_set_priv);
8643 hlua_class_function(gL.T, "get_priv", hlua_applet_tcp_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01008644 hlua_class_function(gL.T, "set_var", hlua_applet_tcp_set_var);
8645 hlua_class_function(gL.T, "unset_var", hlua_applet_tcp_unset_var);
8646 hlua_class_function(gL.T, "get_var", hlua_applet_tcp_get_var);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008647
8648 lua_settable(gL.T, -3);
8649
8650 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008651 class_applet_tcp_ref = hlua_register_metatable(gL.T, CLASS_APPLET_TCP);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02008652
8653 /*
8654 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008655 * Register class AppletHTTP
8656 *
8657 */
8658
8659 /* Create and fill the metatable. */
8660 lua_newtable(gL.T);
8661
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008662 /* Create and fille the __index entry. */
8663 lua_pushstring(gL.T, "__index");
8664 lua_newtable(gL.T);
8665
8666 /* Register Lua functions. */
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01008667 hlua_class_function(gL.T, "set_priv", hlua_applet_http_set_priv);
8668 hlua_class_function(gL.T, "get_priv", hlua_applet_http_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01008669 hlua_class_function(gL.T, "set_var", hlua_applet_http_set_var);
8670 hlua_class_function(gL.T, "unset_var", hlua_applet_http_unset_var);
8671 hlua_class_function(gL.T, "get_var", hlua_applet_http_get_var);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008672 hlua_class_function(gL.T, "getline", hlua_applet_http_getline);
8673 hlua_class_function(gL.T, "receive", hlua_applet_http_recv);
8674 hlua_class_function(gL.T, "send", hlua_applet_http_send);
8675 hlua_class_function(gL.T, "add_header", hlua_applet_http_addheader);
8676 hlua_class_function(gL.T, "set_status", hlua_applet_http_status);
8677 hlua_class_function(gL.T, "start_response", hlua_applet_http_start_response);
8678
8679 lua_settable(gL.T, -3);
8680
8681 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008682 class_applet_http_ref = hlua_register_metatable(gL.T, CLASS_APPLET_HTTP);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02008683
8684 /*
8685 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01008686 * Register class TXN
8687 *
8688 */
8689
8690 /* Create and fill the metatable. */
8691 lua_newtable(gL.T);
8692
8693 /* Create and fille the __index entry. */
8694 lua_pushstring(gL.T, "__index");
8695 lua_newtable(gL.T);
8696
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01008697 /* Register Lua functions. */
Patrick Hemmer268a7072018-05-11 12:52:31 -04008698 hlua_class_function(gL.T, "set_priv", hlua_set_priv);
8699 hlua_class_function(gL.T, "get_priv", hlua_get_priv);
8700 hlua_class_function(gL.T, "set_var", hlua_set_var);
8701 hlua_class_function(gL.T, "unset_var", hlua_unset_var);
8702 hlua_class_function(gL.T, "get_var", hlua_get_var);
8703 hlua_class_function(gL.T, "done", hlua_txn_done);
8704 hlua_class_function(gL.T, "set_loglevel", hlua_txn_set_loglevel);
8705 hlua_class_function(gL.T, "set_tos", hlua_txn_set_tos);
8706 hlua_class_function(gL.T, "set_mark", hlua_txn_set_mark);
8707 hlua_class_function(gL.T, "set_priority_class", hlua_txn_set_priority_class);
8708 hlua_class_function(gL.T, "set_priority_offset", hlua_txn_set_priority_offset);
8709 hlua_class_function(gL.T, "deflog", hlua_txn_deflog);
8710 hlua_class_function(gL.T, "log", hlua_txn_log);
8711 hlua_class_function(gL.T, "Debug", hlua_txn_log_debug);
8712 hlua_class_function(gL.T, "Info", hlua_txn_log_info);
8713 hlua_class_function(gL.T, "Warning", hlua_txn_log_warning);
8714 hlua_class_function(gL.T, "Alert", hlua_txn_log_alert);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01008715
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008716 lua_rawset(gL.T, -3);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01008717
8718 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008719 class_txn_ref = hlua_register_metatable(gL.T, CLASS_TXN);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008720
8721 /*
8722 *
8723 * Register class Socket
8724 *
8725 */
8726
8727 /* Create and fill the metatable. */
8728 lua_newtable(gL.T);
8729
8730 /* Create and fille the __index entry. */
8731 lua_pushstring(gL.T, "__index");
8732 lua_newtable(gL.T);
8733
Baptiste Assmann84bb4932015-03-02 21:40:06 +01008734#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008735 hlua_class_function(gL.T, "connect_ssl", hlua_socket_connect_ssl);
Baptiste Assmann84bb4932015-03-02 21:40:06 +01008736#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008737 hlua_class_function(gL.T, "connect", hlua_socket_connect);
8738 hlua_class_function(gL.T, "send", hlua_socket_send);
8739 hlua_class_function(gL.T, "receive", hlua_socket_receive);
8740 hlua_class_function(gL.T, "close", hlua_socket_close);
8741 hlua_class_function(gL.T, "getpeername", hlua_socket_getpeername);
8742 hlua_class_function(gL.T, "getsockname", hlua_socket_getsockname);
8743 hlua_class_function(gL.T, "setoption", hlua_socket_setoption);
8744 hlua_class_function(gL.T, "settimeout", hlua_socket_settimeout);
8745
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008746 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008747
8748 /* Register the garbage collector entry. */
8749 lua_pushstring(gL.T, "__gc");
8750 lua_pushcclosure(gL.T, hlua_socket_gc, 0);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02008751 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008752
8753 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01008754 class_socket_ref = hlua_register_metatable(gL.T, CLASS_SOCKET);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008755
8756 /* Proxy and server configuration initialisation. */
8757 memset(&socket_proxy, 0, sizeof(socket_proxy));
8758 init_new_proxy(&socket_proxy);
8759 socket_proxy.parent = NULL;
8760 socket_proxy.last_change = now.tv_sec;
8761 socket_proxy.id = "LUA-SOCKET";
8762 socket_proxy.cap = PR_CAP_FE | PR_CAP_BE;
8763 socket_proxy.maxconn = 0;
8764 socket_proxy.accept = NULL;
8765 socket_proxy.options2 |= PR_O2_INDEPSTR;
8766 socket_proxy.srv = NULL;
8767 socket_proxy.conn_retries = 0;
8768 socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */
8769
8770 /* Init TCP server: unchanged parameters */
8771 memset(&socket_tcp, 0, sizeof(socket_tcp));
8772 socket_tcp.next = NULL;
8773 socket_tcp.proxy = &socket_proxy;
8774 socket_tcp.obj_type = OBJ_TYPE_SERVER;
8775 LIST_INIT(&socket_tcp.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04008776 socket_tcp.pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02008777 socket_tcp.priv_conns = NULL;
8778 socket_tcp.idle_conns = NULL;
8779 socket_tcp.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02008780 socket_tcp.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008781 socket_tcp.last_change = 0;
8782 socket_tcp.id = "LUA-TCP-CONN";
8783 socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8784 socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8785 socket_tcp.pp_opts = 0; /* Remove proxy protocol. */
8786
8787 /* XXX: Copy default parameter from default server,
8788 * but the default server is not initialized.
8789 */
8790 socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue;
8791 socket_tcp.minconn = socket_proxy.defsrv.minconn;
8792 socket_tcp.maxconn = socket_proxy.defsrv.maxconn;
8793 socket_tcp.slowstart = socket_proxy.defsrv.slowstart;
8794 socket_tcp.onerror = socket_proxy.defsrv.onerror;
8795 socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
8796 socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup;
8797 socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
8798 socket_tcp.uweight = socket_proxy.defsrv.iweight;
8799 socket_tcp.iweight = socket_proxy.defsrv.iweight;
8800
8801 socket_tcp.check.status = HCHK_STATUS_INI;
8802 socket_tcp.check.rise = socket_proxy.defsrv.check.rise;
8803 socket_tcp.check.fall = socket_proxy.defsrv.check.fall;
8804 socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */
8805 socket_tcp.check.server = &socket_tcp;
8806
8807 socket_tcp.agent.status = HCHK_STATUS_INI;
8808 socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise;
8809 socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall;
8810 socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */
8811 socket_tcp.agent.server = &socket_tcp;
8812
Willy Tarreaua261e9b2016-12-22 20:44:00 +01008813 socket_tcp.xprt = xprt_get(XPRT_RAW);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008814
8815#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008816 /* Init TCP server: unchanged parameters */
8817 memset(&socket_ssl, 0, sizeof(socket_ssl));
8818 socket_ssl.next = NULL;
8819 socket_ssl.proxy = &socket_proxy;
8820 socket_ssl.obj_type = OBJ_TYPE_SERVER;
8821 LIST_INIT(&socket_ssl.actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04008822 socket_ssl.pendconns = EB_ROOT;
Willy Tarreaub784b352019-02-07 14:48:24 +01008823 socket_ssl.priv_conns = NULL;
8824 socket_ssl.idle_conns = NULL;
8825 socket_ssl.safe_conns = NULL;
Emeric Brun52a91d32017-08-31 14:41:55 +02008826 socket_ssl.next_state = SRV_ST_RUNNING; /* early server setup */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008827 socket_ssl.last_change = 0;
8828 socket_ssl.id = "LUA-SSL-CONN";
8829 socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8830 socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
8831 socket_ssl.pp_opts = 0; /* Remove proxy protocol. */
8832
8833 /* XXX: Copy default parameter from default server,
8834 * but the default server is not initialized.
8835 */
8836 socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue;
8837 socket_ssl.minconn = socket_proxy.defsrv.minconn;
8838 socket_ssl.maxconn = socket_proxy.defsrv.maxconn;
8839 socket_ssl.slowstart = socket_proxy.defsrv.slowstart;
8840 socket_ssl.onerror = socket_proxy.defsrv.onerror;
8841 socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
8842 socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup;
8843 socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
8844 socket_ssl.uweight = socket_proxy.defsrv.iweight;
8845 socket_ssl.iweight = socket_proxy.defsrv.iweight;
8846
8847 socket_ssl.check.status = HCHK_STATUS_INI;
8848 socket_ssl.check.rise = socket_proxy.defsrv.check.rise;
8849 socket_ssl.check.fall = socket_proxy.defsrv.check.fall;
8850 socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */
8851 socket_ssl.check.server = &socket_ssl;
8852
8853 socket_ssl.agent.status = HCHK_STATUS_INI;
8854 socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise;
8855 socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall;
8856 socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */
8857 socket_ssl.agent.server = &socket_ssl;
8858
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008859 socket_ssl.use_ssl = 1;
Willy Tarreaua261e9b2016-12-22 20:44:00 +01008860 socket_ssl.xprt = xprt_get(XPRT_SSL);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008861
Thierry FOURNIER36d13742015-03-17 16:48:53 +01008862 for (idx = 0; args[idx] != NULL; idx++) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008863 if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */
8864 /*
8865 *
8866 * If the keyword is not known, we can search in the registered
Joseph Herlantb8f9c5e2018-11-15 10:06:08 -08008867 * server keywords. This is useful to configure special SSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008868 * features like client certificates and ssl_verify.
8869 *
8870 */
8871 tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error);
8872 if (tmp_error != 0) {
8873 fprintf(stderr, "INTERNAL ERROR: %s\n", error);
8874 abort(); /* This must be never arrives because the command line
8875 not editable by the user. */
8876 }
8877 idx += kw->skip;
8878 }
8879 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01008880#endif
Thierry Fournier75933d42016-01-21 09:30:18 +01008881
8882 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01008883}
Willy Tarreaubb57d942016-12-21 19:04:56 +01008884
Willy Tarreau80713382018-11-26 10:19:54 +01008885static void hlua_register_build_options(void)
8886{
Willy Tarreaubb57d942016-12-21 19:04:56 +01008887 char *ptr = NULL;
Willy Tarreau80713382018-11-26 10:19:54 +01008888
Willy Tarreaubb57d942016-12-21 19:04:56 +01008889 memprintf(&ptr, "Built with Lua version : %s", LUA_RELEASE);
8890 hap_register_build_opts(ptr, 1);
8891}
Willy Tarreau80713382018-11-26 10:19:54 +01008892
8893INITCALL0(STG_REGISTER, hlua_register_build_options);