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Thierry Fourniere726b142016-02-11 17:57:57 +01001/*
2 * Lua unsafe core engine
3 *
4 * Copyright 2015-2016 Thierry Fournier <tfournier@arpalert.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010013#include <ctype.h>
Thierry FOURNIERbabae282015-09-17 11:36:37 +020014#include <setjmp.h>
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +010015
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010016#include <lauxlib.h>
17#include <lua.h>
18#include <lualib.h>
19
Thierry FOURNIER463119c2015-03-10 00:35:36 +010020#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 503
21#error "Requires Lua 5.3 or later."
Cyril Bontédc0306e2015-03-02 00:08:40 +010022#endif
23
Thierry FOURNIER380d0932015-01-23 14:27:52 +010024#include <ebpttree.h>
25
26#include <common/cfgparse.h>
27
William Lallemand9ed62032016-11-21 17:49:11 +010028#include <types/cli.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010029#include <types/hlua.h>
30#include <types/proxy.h>
William Lallemand9ed62032016-11-21 17:49:11 +010031#include <types/stats.h>
Thierry FOURNIER380d0932015-01-23 14:27:52 +010032
Thierry FOURNIER55da1652015-01-23 11:36:30 +010033#include <proto/arg.h>
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020034#include <proto/applet.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010035#include <proto/channel.h>
William Lallemand9ed62032016-11-21 17:49:11 +010036#include <proto/cli.h>
Willy Tarreaua71f6422016-11-16 17:00:14 +010037#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010038#include <proto/stats.h>
Thierry FOURNIER9a819e72015-02-16 20:22:55 +010039#include <proto/hdr_idx.h>
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +010040#include <proto/hlua.h>
Thierry Fournierfb0b5462016-01-21 09:28:58 +010041#include <proto/hlua_fcn.h>
Thierry FOURNIER3def3932015-04-07 11:27:54 +020042#include <proto/map.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010043#include <proto/obj_type.h>
Thierry FOURNIER83758bb2015-02-04 13:21:04 +010044#include <proto/pattern.h>
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +010045#include <proto/payload.h>
46#include <proto/proto_http.h>
47#include <proto/sample.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010048#include <proto/server.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020049#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020050#include <proto/stream.h>
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +010051#include <proto/stream_interface.h>
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +010052#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010053#include <proto/tcp_rules.h>
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +020054#include <proto/vars.h>
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +010055
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010056/* Lua uses longjmp to perform yield or throwing errors. This
57 * macro is used only for identifying the function that can
58 * not return because a longjmp is executed.
59 * __LJMP marks a prototype of hlua file that can use longjmp.
60 * WILL_LJMP() marks an lua function that will use longjmp.
61 * MAY_LJMP() marks an lua function that may use longjmp.
62 */
63#define __LJMP
64#define WILL_LJMP(func) func
65#define MAY_LJMP(func) func
66
Thierry FOURNIERbabae282015-09-17 11:36:37 +020067/* This couple of function executes securely some Lua calls outside of
68 * the lua runtime environment. Each Lua call can return a longjmp
69 * if it encounter a memory error.
70 *
71 * Lua documentation extract:
72 *
73 * If an error happens outside any protected environment, Lua calls
74 * a panic function (see lua_atpanic) and then calls abort, thus
75 * exiting the host application. Your panic function can avoid this
76 * exit by never returning (e.g., doing a long jump to your own
77 * recovery point outside Lua).
78 *
79 * The panic function runs as if it were a message handler (see
80 * §2.3); in particular, the error message is at the top of the
81 * stack. However, there is no guarantee about stack space. To push
82 * anything on the stack, the panic function must first check the
83 * available space (see §4.2).
84 *
85 * We must check all the Lua entry point. This includes:
86 * - The include/proto/hlua.h exported functions
87 * - the task wrapper function
88 * - The action wrapper function
89 * - The converters wrapper function
90 * - The sample-fetch wrapper functions
91 *
92 * It is tolerated that the initilisation function returns an abort.
93 * Before each Lua abort, an error message is writed on stderr.
94 *
95 * The macro SET_SAFE_LJMP initialise the longjmp. The Macro
96 * RESET_SAFE_LJMP reset the longjmp. These function must be macro
97 * because they must be exists in the program stack when the longjmp
98 * is called.
99 */
100jmp_buf safe_ljmp_env;
101static int hlua_panic_safe(lua_State *L) { return 0; }
102static int hlua_panic_ljmp(lua_State *L) { longjmp(safe_ljmp_env, 1); }
103
104#define SET_SAFE_LJMP(__L) \
105 ({ \
106 int ret; \
107 if (setjmp(safe_ljmp_env) != 0) { \
108 lua_atpanic(__L, hlua_panic_safe); \
109 ret = 0; \
110 } else { \
111 lua_atpanic(__L, hlua_panic_ljmp); \
112 ret = 1; \
113 } \
114 ret; \
115 })
116
117/* If we are the last function catching Lua errors, we
118 * must reset the panic function.
119 */
120#define RESET_SAFE_LJMP(__L) \
121 do { \
122 lua_atpanic(__L, hlua_panic_safe); \
123 } while(0)
124
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200125/* Applet status flags */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200126#define APPLET_DONE 0x01 /* applet processing is done. */
127#define APPLET_100C 0x02 /* 100 continue expected. */
128#define APPLET_HDR_SENT 0x04 /* Response header sent. */
129#define APPLET_CHUNKED 0x08 /* Use transfer encoding chunked. */
130#define APPLET_LAST_CHK 0x10 /* Last chunk sent. */
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +0100131#define APPLET_HTTP11 0x20 /* Last chunk sent. */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200132
133#define HTTP_100C "HTTP/1.1 100 Continue\r\n\r\n"
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200134
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100135/* The main Lua execution context. */
136struct hlua gL;
137
Thierry FOURNIERebed6e92016-12-16 11:54:07 +0100138/* This is the memory pool containing struct lua for applets
139 * (including cli).
140 */
141struct pool_head *pool2_hlua;
142
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100143/* This is the memory pool containing all the signal structs. These
144 * struct are used to store each requiered signal between two tasks.
145 */
146struct pool_head *pool2_hlua_com;
147
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100148/* Used for Socket connection. */
149static struct proxy socket_proxy;
150static struct server socket_tcp;
151#ifdef USE_OPENSSL
152static struct server socket_ssl;
153#endif
154
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +0100155/* List head of the function called at the initialisation time. */
156struct list hlua_init_functions = LIST_HEAD_INIT(hlua_init_functions);
157
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100158/* The following variables contains the reference of the different
159 * Lua classes. These references are useful for identify metadata
160 * associated with an object.
161 */
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100162static int class_txn_ref;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +0100163static int class_socket_ref;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +0100164static int class_channel_ref;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +0100165static int class_fetches_ref;
Thierry FOURNIER594afe72015-03-10 23:58:30 +0100166static int class_converters_ref;
Thierry FOURNIER08504f42015-03-16 14:17:08 +0100167static int class_http_ref;
Thierry FOURNIER3def3932015-04-07 11:27:54 +0200168static int class_map_ref;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200169static int class_applet_tcp_ref;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200170static int class_applet_http_ref;
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +0100171
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100172/* Global Lua execution timeout. By default Lua, execution linked
Willy Tarreau87b09662015-04-03 00:22:06 +0200173 * with stream (actions, sample-fetches and converters) have a
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100174 * short timeout. Lua linked with tasks doesn't have a timeout
175 * because a task may remain alive during all the haproxy execution.
176 */
177static unsigned int hlua_timeout_session = 4000; /* session timeout. */
178static unsigned int hlua_timeout_task = TICK_ETERNITY; /* task timeout. */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +0200179static unsigned int hlua_timeout_applet = 4000; /* applet timeout. */
Thierry FOURNIERbd413492015-03-03 16:52:26 +0100180
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100181/* Interrupts the Lua processing each "hlua_nb_instruction" instructions.
182 * it is used for preventing infinite loops.
183 *
184 * I test the scheer with an infinite loop containing one incrementation
185 * and one test. I run this loop between 10 seconds, I raise a ceil of
186 * 710M loops from one interrupt each 9000 instructions, so I fix the value
187 * to one interrupt each 10 000 instructions.
188 *
189 * configured | Number of
190 * instructions | loops executed
191 * between two | in milions
192 * forced yields |
193 * ---------------+---------------
194 * 10 | 160
195 * 500 | 670
196 * 1000 | 680
197 * 5000 | 700
198 * 7000 | 700
199 * 8000 | 700
200 * 9000 | 710 <- ceil
201 * 10000 | 710
202 * 100000 | 710
203 * 1000000 | 710
204 *
205 */
206static unsigned int hlua_nb_instruction = 10000;
207
Willy Tarreau32f61e22015-03-18 17:54:59 +0100208/* Descriptor for the memory allocation state. If limit is not null, it will
209 * be enforced on any memory allocation.
210 */
211struct hlua_mem_allocator {
212 size_t allocated;
213 size_t limit;
214};
215
216static struct hlua_mem_allocator hlua_global_allocator;
217
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200218static const char error_500[] =
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200219 "HTTP/1.0 500 Internal Server Error\r\n"
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200220 "Cache-Control: no-cache\r\n"
221 "Connection: close\r\n"
222 "Content-Type: text/html\r\n"
223 "\r\n"
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200224 "<html><body><h1>500 Internal Server Error</h1>\nAn internal server error occured.\n</body></html>\n";
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200225
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100226/* These functions converts types between HAProxy internal args or
227 * sample and LUA types. Another function permits to check if the
228 * LUA stack contains arguments according with an required ARG_T
229 * format.
230 */
231static int hlua_arg2lua(lua_State *L, const struct arg *arg);
232static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100233__LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100234 uint64_t mask, struct proxy *p);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100235static int hlua_smp2lua(lua_State *L, struct sample *smp);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100236static int hlua_smp2lua_str(lua_State *L, struct sample *smp);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100237static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp);
238
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200239__LJMP static int hlua_http_get_headers(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg);
240
Thierry FOURNIER23bc3752015-09-11 19:15:43 +0200241#define SEND_ERR(__be, __fmt, __args...) \
242 do { \
243 send_log(__be, LOG_ERR, __fmt, ## __args); \
244 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) \
245 Alert(__fmt, ## __args); \
246 } while (0)
247
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100248/* Used to check an Lua function type in the stack. It creates and
249 * returns a reference of the function. This function throws an
250 * error if the rgument is not a "function".
251 */
252__LJMP unsigned int hlua_checkfunction(lua_State *L, int argno)
253{
254 if (!lua_isfunction(L, argno)) {
255 const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, -1));
256 WILL_LJMP(luaL_argerror(L, argno, msg));
257 }
258 lua_pushvalue(L, argno);
259 return luaL_ref(L, LUA_REGISTRYINDEX);
260}
261
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +0200262/* Return the string that is of the top of the stack. */
263const char *hlua_get_top_error_string(lua_State *L)
264{
265 if (lua_gettop(L) < 1)
266 return "unknown error";
267 if (lua_type(L, -1) != LUA_TSTRING)
268 return "unknown error";
269 return lua_tostring(L, -1);
270}
271
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100272/* This function check the number of arguments available in the
273 * stack. If the number of arguments available is not the same
274 * then <nb> an error is throwed.
275 */
276__LJMP static inline void check_args(lua_State *L, int nb, char *fcn)
277{
278 if (lua_gettop(L) == nb)
279 return;
280 WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb));
281}
282
Thierry FOURNIERe8b9a402015-02-25 18:48:12 +0100283/* This fucntion push an error string prefixed by the file name
284 * and the line number where the error is encountered.
285 */
286static int hlua_pusherror(lua_State *L, const char *fmt, ...)
287{
288 va_list argp;
289 va_start(argp, fmt);
290 luaL_where(L, 1);
291 lua_pushvfstring(L, fmt, argp);
292 va_end(argp);
293 lua_concat(L, 2);
294 return 1;
295}
296
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100297/* This function register a new signal. "lua" is the current lua
298 * execution context. It contains a pointer to the associated task.
299 * "link" is a list head attached to an other task that must be wake
300 * the lua task if an event occurs. This is useful with external
301 * events like TCP I/O or sleep functions. This funcion allocate
302 * memory for the signal.
303 */
Thierry FOURNIER847ca662016-12-16 13:07:22 +0100304static struct hlua_com *hlua_com_new(struct list *purge, struct list *event, struct task *wakeup)
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100305{
306 struct hlua_com *com = pool_alloc2(pool2_hlua_com);
307 if (!com)
Thierry FOURNIER847ca662016-12-16 13:07:22 +0100308 return NULL;
309 LIST_ADDQ(purge, &com->purge_me);
310 LIST_ADDQ(event, &com->wake_me);
311 com->task = wakeup;
312 return com;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100313}
314
315/* This function purge all the pending signals when the LUA execution
316 * is finished. This prevent than a coprocess try to wake a deleted
317 * task. This function remove the memory associated to the signal.
318 */
Thierry FOURNIER847ca662016-12-16 13:07:22 +0100319static void hlua_com_purge(struct list *purge)
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100320{
321 struct hlua_com *com, *back;
322
323 /* Delete all pending communication signals. */
Thierry FOURNIER847ca662016-12-16 13:07:22 +0100324 list_for_each_entry_safe(com, back, purge, purge_me) {
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100325 LIST_DEL(&com->purge_me);
326 LIST_DEL(&com->wake_me);
327 pool_free2(pool2_hlua_com, com);
328 }
329}
330
331/* This function sends signals. It wakes all the tasks attached
332 * to a list head, and remove the signal, and free the used
333 * memory.
334 */
335static void hlua_com_wake(struct list *wake)
336{
337 struct hlua_com *com, *back;
338
339 /* Wake task and delete all pending communication signals. */
340 list_for_each_entry_safe(com, back, wake, wake_me) {
341 LIST_DEL(&com->purge_me);
342 LIST_DEL(&com->wake_me);
343 task_wakeup(com->task, TASK_WOKEN_MSG);
344 pool_free2(pool2_hlua_com, com);
345 }
346}
347
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100348/* This functions is used with sample fetch and converters. It
349 * converts the HAProxy configuration argument in a lua stack
350 * values.
351 *
352 * It takes an array of "arg", and each entry of the array is
353 * converted and pushed in the LUA stack.
354 */
355static int hlua_arg2lua(lua_State *L, const struct arg *arg)
356{
357 switch (arg->type) {
358 case ARGT_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100359 case ARGT_TIME:
360 case ARGT_SIZE:
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100361 lua_pushinteger(L, arg->data.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100362 break;
363
364 case ARGT_STR:
365 lua_pushlstring(L, arg->data.str.str, arg->data.str.len);
366 break;
367
368 case ARGT_IPV4:
369 case ARGT_IPV6:
370 case ARGT_MSK4:
371 case ARGT_MSK6:
372 case ARGT_FE:
373 case ARGT_BE:
374 case ARGT_TAB:
375 case ARGT_SRV:
376 case ARGT_USR:
377 case ARGT_MAP:
378 default:
379 lua_pushnil(L);
380 break;
381 }
382 return 1;
383}
384
385/* This function take one entrie in an LUA stack at the index "ud",
386 * and try to convert it in an HAProxy argument entry. This is useful
387 * with sample fetch wrappers. The input arguments are gived to the
388 * lua wrapper and converted as arg list by thi function.
389 */
390static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg)
391{
392 switch (lua_type(L, ud)) {
393
394 case LUA_TNUMBER:
395 case LUA_TBOOLEAN:
396 arg->type = ARGT_SINT;
397 arg->data.sint = lua_tointeger(L, ud);
398 break;
399
400 case LUA_TSTRING:
401 arg->type = ARGT_STR;
402 arg->data.str.str = (char *)lua_tolstring(L, ud, (size_t *)&arg->data.str.len);
403 break;
404
405 case LUA_TUSERDATA:
406 case LUA_TNIL:
407 case LUA_TTABLE:
408 case LUA_TFUNCTION:
409 case LUA_TTHREAD:
410 case LUA_TLIGHTUSERDATA:
411 arg->type = ARGT_SINT;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200412 arg->data.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100413 break;
414 }
415 return 1;
416}
417
418/* the following functions are used to convert a struct sample
419 * in Lua type. This useful to convert the return of the
420 * fetchs or converters.
421 */
Willy Tarreau5eadada2015-03-10 17:28:54 +0100422static int hlua_smp2lua(lua_State *L, struct sample *smp)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100423{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200424 switch (smp->data.type) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100425 case SMP_T_SINT:
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100426 case SMP_T_BOOL:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200427 lua_pushinteger(L, smp->data.u.sint);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100428 break;
429
430 case SMP_T_BIN:
431 case SMP_T_STR:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200432 lua_pushlstring(L, smp->data.u.str.str, smp->data.u.str.len);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100433 break;
434
435 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200436 switch (smp->data.u.meth.meth) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100437 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
438 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
439 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
440 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
441 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
442 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
443 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
444 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
445 case HTTP_METH_OTHER:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200446 lua_pushlstring(L, smp->data.u.meth.str.str, smp->data.u.meth.str.len);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100447 break;
448 default:
449 lua_pushnil(L);
450 break;
451 }
452 break;
453
454 case SMP_T_IPV4:
455 case SMP_T_IPV6:
456 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200457 if (sample_casts[smp->data.type][SMP_T_STR] &&
458 sample_casts[smp->data.type][SMP_T_STR](smp))
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200459 lua_pushlstring(L, smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreau5eadada2015-03-10 17:28:54 +0100460 else
461 lua_pushnil(L);
462 break;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100463 default:
464 lua_pushnil(L);
465 break;
466 }
467 return 1;
468}
469
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100470/* the following functions are used to convert a struct sample
471 * in Lua strings. This is useful to convert the return of the
472 * fetchs or converters.
473 */
474static int hlua_smp2lua_str(lua_State *L, struct sample *smp)
475{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200476 switch (smp->data.type) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100477
478 case SMP_T_BIN:
479 case SMP_T_STR:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200480 lua_pushlstring(L, smp->data.u.str.str, smp->data.u.str.len);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100481 break;
482
483 case SMP_T_METH:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200484 switch (smp->data.u.meth.meth) {
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100485 case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break;
486 case HTTP_METH_GET: lua_pushstring(L, "GET"); break;
487 case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break;
488 case HTTP_METH_POST: lua_pushstring(L, "POST"); break;
489 case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break;
490 case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break;
491 case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break;
492 case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break;
493 case HTTP_METH_OTHER:
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200494 lua_pushlstring(L, smp->data.u.meth.str.str, smp->data.u.meth.str.len);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100495 break;
496 default:
497 lua_pushstring(L, "");
498 break;
499 }
500 break;
501
502 case SMP_T_SINT:
503 case SMP_T_BOOL:
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100504 case SMP_T_IPV4:
505 case SMP_T_IPV6:
506 case SMP_T_ADDR: /* This type is never used to qualify a sample. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200507 if (sample_casts[smp->data.type][SMP_T_STR] &&
508 sample_casts[smp->data.type][SMP_T_STR](smp))
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200509 lua_pushlstring(L, smp->data.u.str.str, smp->data.u.str.len);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +0100510 else
511 lua_pushstring(L, "");
512 break;
513 default:
514 lua_pushstring(L, "");
515 break;
516 }
517 return 1;
518}
519
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100520/* the following functions are used to convert an Lua type in a
521 * struct sample. This is useful to provide data from a converter
522 * to the LUA code.
523 */
524static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp)
525{
526 switch (lua_type(L, ud)) {
527
528 case LUA_TNUMBER:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200529 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200530 smp->data.u.sint = lua_tointeger(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100531 break;
532
533
534 case LUA_TBOOLEAN:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200535 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200536 smp->data.u.sint = lua_toboolean(L, ud);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100537 break;
538
539 case LUA_TSTRING:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200540 smp->data.type = SMP_T_STR;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100541 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200542 smp->data.u.str.str = (char *)lua_tolstring(L, ud, (size_t *)&smp->data.u.str.len);
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100543 break;
544
545 case LUA_TUSERDATA:
546 case LUA_TNIL:
547 case LUA_TTABLE:
548 case LUA_TFUNCTION:
549 case LUA_TTHREAD:
550 case LUA_TLIGHTUSERDATA:
Thierry FOURNIER93405e12015-08-26 14:19:03 +0200551 case LUA_TNONE:
552 default:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200553 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200554 smp->data.u.sint = 0;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100555 break;
556 }
557 return 1;
558}
559
560/* This function check the "argp" builded by another conversion function
561 * is in accord with the expected argp defined by the "mask". The fucntion
562 * returns true or false. It can be adjust the types if there compatibles.
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100563 *
564 * This function assumes thant the argp argument contains ARGM_NBARGS + 1
565 * entries.
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100566 */
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100567__LJMP int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp,
David Carlier0c437f42016-04-27 16:21:56 +0100568 uint64_t mask, struct proxy *p)
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100569{
570 int min_arg;
571 int idx;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100572 struct proxy *px;
573 char *sname, *pname;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100574
575 idx = 0;
576 min_arg = ARGM(mask);
577 mask >>= ARGM_BITS;
578
579 while (1) {
580
581 /* Check oversize. */
582 if (idx >= ARGM_NBARGS && argp[idx].type != ARGT_STOP) {
Cyril Bonté577a36a2015-03-02 00:08:38 +0100583 WILL_LJMP(luaL_argerror(L, first + idx, "Malformed argument mask"));
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100584 }
585
586 /* Check for mandatory arguments. */
587 if (argp[idx].type == ARGT_STOP) {
Thierry FOURNIER3caa0392015-03-13 13:38:17 +0100588 if (idx < min_arg) {
589
590 /* If miss other argument than the first one, we return an error. */
591 if (idx > 0)
592 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
593
594 /* If first argument have a certain type, some default values
595 * may be used. See the function smp_resolve_args().
596 */
597 switch (mask & ARGT_MASK) {
598
599 case ARGT_FE:
600 if (!(p->cap & PR_CAP_FE))
601 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
602 argp[idx].data.prx = p;
603 argp[idx].type = ARGT_FE;
604 argp[idx+1].type = ARGT_STOP;
605 break;
606
607 case ARGT_BE:
608 if (!(p->cap & PR_CAP_BE))
609 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
610 argp[idx].data.prx = p;
611 argp[idx].type = ARGT_BE;
612 argp[idx+1].type = ARGT_STOP;
613 break;
614
615 case ARGT_TAB:
616 argp[idx].data.prx = p;
617 argp[idx].type = ARGT_TAB;
618 argp[idx+1].type = ARGT_STOP;
619 break;
620
621 default:
622 WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected"));
623 break;
624 }
625 }
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100626 return 0;
627 }
628
629 /* Check for exceed the number of requiered argument. */
630 if ((mask & ARGT_MASK) == ARGT_STOP &&
631 argp[idx].type != ARGT_STOP) {
632 WILL_LJMP(luaL_argerror(L, first + idx, "Last argument expected"));
633 }
634
635 if ((mask & ARGT_MASK) == ARGT_STOP &&
636 argp[idx].type == ARGT_STOP) {
637 return 0;
638 }
639
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100640 /* Convert some argument types. */
641 switch (mask & ARGT_MASK) {
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100642 case ARGT_SINT:
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100643 if (argp[idx].type != ARGT_SINT)
644 WILL_LJMP(luaL_argerror(L, first + idx, "integer expected"));
645 argp[idx].type = ARGT_SINT;
646 break;
647
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100648 case ARGT_TIME:
649 if (argp[idx].type != ARGT_SINT)
650 WILL_LJMP(luaL_argerror(L, first + idx, "integer expected"));
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200651 argp[idx].type = ARGT_TIME;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100652 break;
653
654 case ARGT_SIZE:
655 if (argp[idx].type != ARGT_SINT)
656 WILL_LJMP(luaL_argerror(L, first + idx, "integer expected"));
Thierry FOURNIER29176f32015-07-07 00:41:29 +0200657 argp[idx].type = ARGT_SIZE;
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100658 break;
659
660 case ARGT_FE:
661 if (argp[idx].type != ARGT_STR)
662 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
663 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
664 trash.str[argp[idx].data.str.len] = 0;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200665 argp[idx].data.prx = proxy_fe_by_name(trash.str);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100666 if (!argp[idx].data.prx)
667 WILL_LJMP(luaL_argerror(L, first + idx, "frontend doesn't exist"));
668 argp[idx].type = ARGT_FE;
669 break;
670
671 case ARGT_BE:
672 if (argp[idx].type != ARGT_STR)
673 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
674 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
675 trash.str[argp[idx].data.str.len] = 0;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200676 argp[idx].data.prx = proxy_be_by_name(trash.str);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100677 if (!argp[idx].data.prx)
678 WILL_LJMP(luaL_argerror(L, first + idx, "backend doesn't exist"));
679 argp[idx].type = ARGT_BE;
680 break;
681
682 case ARGT_TAB:
683 if (argp[idx].type != ARGT_STR)
684 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
685 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
686 trash.str[argp[idx].data.str.len] = 0;
Willy Tarreaue2dc1fa2015-05-26 12:08:07 +0200687 argp[idx].data.prx = proxy_tbl_by_name(trash.str);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100688 if (!argp[idx].data.prx)
689 WILL_LJMP(luaL_argerror(L, first + idx, "table doesn't exist"));
690 argp[idx].type = ARGT_TAB;
691 break;
692
693 case ARGT_SRV:
694 if (argp[idx].type != ARGT_STR)
695 WILL_LJMP(luaL_argerror(L, first + idx, "string expected"));
696 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
697 trash.str[argp[idx].data.str.len] = 0;
698 sname = strrchr(trash.str, '/');
699 if (sname) {
700 *sname++ = '\0';
701 pname = trash.str;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200702 px = proxy_be_by_name(pname);
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100703 if (!px)
704 WILL_LJMP(luaL_argerror(L, first + idx, "backend doesn't exist"));
705 }
706 else {
707 sname = trash.str;
708 px = p;
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100709 }
Thierry FOURNIER7f4942a2015-03-12 18:28:50 +0100710 argp[idx].data.srv = findserver(px, sname);
711 if (!argp[idx].data.srv)
712 WILL_LJMP(luaL_argerror(L, first + idx, "server doesn't exist"));
713 argp[idx].type = ARGT_SRV;
714 break;
715
716 case ARGT_IPV4:
717 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
718 trash.str[argp[idx].data.str.len] = 0;
719 if (inet_pton(AF_INET, trash.str, &argp[idx].data.ipv4))
720 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv4 address"));
721 argp[idx].type = ARGT_IPV4;
722 break;
723
724 case ARGT_MSK4:
725 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
726 trash.str[argp[idx].data.str.len] = 0;
727 if (!str2mask(trash.str, &argp[idx].data.ipv4))
728 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv4 mask"));
729 argp[idx].type = ARGT_MSK4;
730 break;
731
732 case ARGT_IPV6:
733 memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len);
734 trash.str[argp[idx].data.str.len] = 0;
735 if (inet_pton(AF_INET6, trash.str, &argp[idx].data.ipv6))
736 WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv6 address"));
737 argp[idx].type = ARGT_IPV6;
738 break;
739
740 case ARGT_MSK6:
741 case ARGT_MAP:
742 case ARGT_REG:
743 case ARGT_USR:
744 WILL_LJMP(luaL_argerror(L, first + idx, "type not yet supported"));
Thierry FOURNIER55da1652015-01-23 11:36:30 +0100745 break;
746 }
747
748 /* Check for type of argument. */
749 if ((mask & ARGT_MASK) != argp[idx].type) {
750 const char *msg = lua_pushfstring(L, "'%s' expected, got '%s'",
751 arg_type_names[(mask & ARGT_MASK)],
752 arg_type_names[argp[idx].type & ARGT_MASK]);
753 WILL_LJMP(luaL_argerror(L, first + idx, msg));
754 }
755
756 /* Next argument. */
757 mask >>= ARGT_BITS;
758 idx++;
759 }
760}
761
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100762/*
763 * The following functions are used to make correspondance between the the
764 * executed lua pointer and the "struct hlua *" that contain the context.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100765 *
766 * - hlua_gethlua : return the hlua context associated with an lua_State.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100767 * - hlua_sethlua : create the association between hlua context and lua_state.
768 */
769static inline struct hlua *hlua_gethlua(lua_State *L)
770{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100771 struct hlua **hlua = lua_getextraspace(L);
772 return *hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100773}
774static inline void hlua_sethlua(struct hlua *hlua)
775{
Thierry FOURNIER38c5fd62015-03-10 02:40:29 +0100776 struct hlua **hlua_store = lua_getextraspace(hlua->T);
777 *hlua_store = hlua;
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100778}
779
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100780/* This function is used to send logs. It try to send on screen (stderr)
781 * and on the default syslog server.
782 */
783static inline void hlua_sendlog(struct proxy *px, int level, const char *msg)
784{
785 struct tm tm;
786 char *p;
787
788 /* Cleanup the log message. */
789 p = trash.str;
790 for (; *msg != '\0'; msg++, p++) {
Thierry FOURNIERccf00632015-09-16 12:47:03 +0200791 if (p >= trash.str + trash.size - 1) {
792 /* Break the message if exceed the buffer size. */
793 *(p-4) = ' ';
794 *(p-3) = '.';
795 *(p-2) = '.';
796 *(p-1) = '.';
797 break;
798 }
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100799 if (isprint(*msg))
800 *p = *msg;
801 else
802 *p = '.';
803 }
804 *p = '\0';
805
Thierry FOURNIER5554e292015-09-09 11:21:37 +0200806 send_log(px, level, "%s\n", trash.str);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100807 if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
Willy Tarreaua678b432015-08-28 10:14:59 +0200808 get_localtime(date.tv_sec, &tm);
809 fprintf(stderr, "[%s] %03d/%02d%02d%02d (%d) : %s\n",
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +0100810 log_levels[level], tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec,
811 (int)getpid(), trash.str);
812 fflush(stderr);
813 }
814}
815
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100816/* This function just ensure that the yield will be always
817 * returned with a timeout and permit to set some flags
818 */
819__LJMP void hlua_yieldk(lua_State *L, int nresults, int ctx,
Thierry FOURNIERf90838b2015-03-06 13:48:32 +0100820 lua_KFunction k, int timeout, unsigned int flags)
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100821{
822 struct hlua *hlua = hlua_gethlua(L);
823
824 /* Set the wake timeout. If timeout is required, we set
825 * the expiration time.
826 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +0200827 hlua->wake_time = timeout;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100828
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +0100829 hlua->flags |= flags;
830
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +0100831 /* Process the yield. */
832 WILL_LJMP(lua_yieldk(L, nresults, ctx, k));
833}
834
Willy Tarreau87b09662015-04-03 00:22:06 +0200835/* This function initialises the Lua environment stored in the stream.
836 * It must be called at the start of the stream. This function creates
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100837 * an LUA coroutine. It can not be use to crete the main LUA context.
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200838 *
839 * This function is particular. it initialises a new Lua thread. If the
840 * initialisation fails (example: out of memory error), the lua function
841 * throws an error (longjmp).
842 *
843 * This function manipulates two Lua stack: the main and the thread. Only
844 * the main stack can fail. The thread is not manipulated. This function
845 * MUST NOT manipulate the created thread stack state, because is not
846 * proctected agains error throwed by the thread stack.
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100847 */
848int hlua_ctx_init(struct hlua *lua, struct task *task)
849{
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200850 if (!SET_SAFE_LJMP(gL.T)) {
851 lua->Tref = LUA_REFNIL;
852 return 0;
853 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100854 lua->Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +0100855 lua->flags = 0;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100856 LIST_INIT(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100857 lua->T = lua_newthread(gL.T);
858 if (!lua->T) {
859 lua->Tref = LUA_REFNIL;
860 return 0;
861 }
862 hlua_sethlua(lua);
863 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
864 lua->task = task;
Thierry FOURNIERbabae282015-09-17 11:36:37 +0200865 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100866 return 1;
867}
868
Willy Tarreau87b09662015-04-03 00:22:06 +0200869/* Used to destroy the Lua coroutine when the attached stream or task
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100870 * is destroyed. The destroy also the memory context. The struct "lua"
871 * is not freed.
872 */
873void hlua_ctx_destroy(struct hlua *lua)
874{
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100875 if (!lua)
Thierry FOURNIERa718b292015-03-04 16:48:34 +0100876 return;
877
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100878 if (!lua->T)
879 goto end;
880
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100881 /* Purge all the pending signals. */
Thierry FOURNIER847ca662016-12-16 13:07:22 +0100882 hlua_com_purge(&lua->com);
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +0100883
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100884 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
885 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
Thierry FOURNIER5a50a852015-09-23 16:59:28 +0200886
887 /* Forces a garbage collecting process. If the Lua program is finished
888 * without error, we run the GC on the thread pointer. Its freed all
889 * the unused memory.
890 * If the thread is finnish with an error or is currently yielded,
891 * it seems that the GC applied on the thread doesn't clean anything,
892 * so e run the GC on the main thread.
893 * NOTE: maybe this action locks all the Lua threads untiml the en of
894 * the garbage collection.
895 */
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +0200896 if (lua->flags & HLUA_MUST_GC) {
897 lua_gc(lua->T, LUA_GCCOLLECT, 0);
898 if (lua_status(lua->T) != LUA_OK)
899 lua_gc(gL.T, LUA_GCCOLLECT, 0);
900 }
Thierry FOURNIER5a50a852015-09-23 16:59:28 +0200901
Thierry FOURNIERa7b536b2015-09-21 22:50:24 +0200902 lua->T = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100903
904end:
905 pool_free2(pool2_hlua, lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100906}
907
908/* This function is used to restore the Lua context when a coroutine
909 * fails. This function copy the common memory between old coroutine
910 * and the new coroutine. The old coroutine is destroyed, and its
911 * replaced by the new coroutine.
912 * If the flag "keep_msg" is set, the last entry of the old is assumed
913 * as string error message and it is copied in the new stack.
914 */
915static int hlua_ctx_renew(struct hlua *lua, int keep_msg)
916{
917 lua_State *T;
918 int new_ref;
919
920 /* Renew the main LUA stack doesn't have sense. */
921 if (lua == &gL)
922 return 0;
923
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100924 /* New Lua coroutine. */
925 T = lua_newthread(gL.T);
926 if (!T)
927 return 0;
928
929 /* Copy last error message. */
930 if (keep_msg)
931 lua_xmove(lua->T, T, 1);
932
933 /* Copy data between the coroutines. */
934 lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref);
935 lua_xmove(lua->T, T, 1);
936 new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Valur poped. */
937
938 /* Destroy old data. */
939 luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref);
940
941 /* The thread is garbage collected by Lua. */
942 luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref);
943
944 /* Fill the struct with the new coroutine values. */
945 lua->Mref = new_ref;
946 lua->T = T;
947 lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX);
948
949 /* Set context. */
950 hlua_sethlua(lua);
951
952 return 1;
953}
954
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100955void hlua_hook(lua_State *L, lua_Debug *ar)
956{
Thierry FOURNIERcae49c92015-03-06 14:05:24 +0100957 struct hlua *hlua = hlua_gethlua(L);
958
959 /* Lua cannot yield when its returning from a function,
960 * so, we can fix the interrupt hook to 1 instruction,
961 * expecting that the function is finnished.
962 */
963 if (lua_gethookmask(L) & LUA_MASKRET) {
964 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, 1);
965 return;
966 }
967
968 /* restore the interrupt condition. */
969 lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
970
971 /* If we interrupt the Lua processing in yieldable state, we yield.
972 * If the state is not yieldable, trying yield causes an error.
973 */
974 if (lua_isyieldable(L))
975 WILL_LJMP(hlua_yieldk(L, 0, 0, NULL, TICK_ETERNITY, HLUA_CTRLYIELD));
976
Thierry FOURNIERa85cfb12015-03-13 14:50:06 +0100977 /* If we cannot yield, update the clock and check the timeout. */
978 tv_update_date(0, 1);
Thierry FOURNIER10770fa2015-09-29 01:59:42 +0200979 hlua->run_time += now_ms - hlua->start_time;
980 if (hlua->max_time && hlua->run_time >= hlua->max_time) {
Thierry FOURNIERcae49c92015-03-06 14:05:24 +0100981 lua_pushfstring(L, "execution timeout");
982 WILL_LJMP(lua_error(L));
983 }
984
Thierry FOURNIER10770fa2015-09-29 01:59:42 +0200985 /* Update the start time. */
986 hlua->start_time = now_ms;
987
Thierry FOURNIERcae49c92015-03-06 14:05:24 +0100988 /* Try to interrupt the process at the end of the current
989 * unyieldable function.
990 */
991 lua_sethook(hlua->T, hlua_hook, LUA_MASKRET|LUA_MASKCOUNT, hlua_nb_instruction);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +0100992}
993
Thierry FOURNIER380d0932015-01-23 14:27:52 +0100994/* This function start or resumes the Lua stack execution. If the flag
995 * "yield_allowed" if no set and the LUA stack execution returns a yield
996 * The function return an error.
997 *
998 * The function can returns 4 values:
999 * - HLUA_E_OK : The execution is terminated without any errors.
1000 * - HLUA_E_AGAIN : The execution must continue at the next associated
1001 * task wakeup.
1002 * - HLUA_E_ERRMSG : An error has occured, an error message is set in
1003 * the top of the stack.
1004 * - HLUA_E_ERR : An error has occured without error message.
1005 *
1006 * If an error occured, the stack is renewed and it is ready to run new
1007 * LUA code.
1008 */
1009static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed)
1010{
1011 int ret;
1012 const char *msg;
1013
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001014 /* Initialise run time counter. */
1015 if (!HLUA_IS_RUNNING(lua))
1016 lua->run_time = 0;
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001017
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001018resume_execution:
1019
1020 /* This hook interrupts the Lua processing each 'hlua_nb_instruction'
1021 * instructions. it is used for preventing infinite loops.
1022 */
1023 lua_sethook(lua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction);
1024
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001025 /* Remove all flags except the running flags. */
Thierry FOURNIER2f3867f2015-09-28 01:02:01 +02001026 HLUA_SET_RUN(lua);
1027 HLUA_CLR_CTRLYIELD(lua);
1028 HLUA_CLR_WAKERESWR(lua);
1029 HLUA_CLR_WAKEREQWR(lua);
Thierry FOURNIER1bfc09b2015-03-05 17:10:14 +01001030
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001031 /* Update the start time. */
1032 lua->start_time = now_ms;
1033
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001034 /* Call the function. */
1035 ret = lua_resume(lua->T, gL.T, lua->nargs);
1036 switch (ret) {
1037
1038 case LUA_OK:
1039 ret = HLUA_E_OK;
1040 break;
1041
1042 case LUA_YIELD:
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001043 /* Check if the execution timeout is expired. It it is the case, we
1044 * break the Lua execution.
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001045 */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02001046 tv_update_date(0, 1);
1047 lua->run_time += now_ms - lua->start_time;
1048 if (lua->max_time && lua->run_time > lua->max_time) {
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001049 lua_settop(lua->T, 0); /* Empty the stack. */
1050 if (!lua_checkstack(lua->T, 1)) {
1051 ret = HLUA_E_ERR;
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001052 break;
1053 }
Thierry FOURNIERdc9ca962015-03-05 11:16:52 +01001054 lua_pushfstring(lua->T, "execution timeout");
1055 ret = HLUA_E_ERRMSG;
1056 break;
1057 }
1058 /* Process the forced yield. if the general yield is not allowed or
1059 * if no task were associated this the current Lua execution
1060 * coroutine, we resume the execution. Else we want to return in the
1061 * scheduler and we want to be waked up again, to continue the
1062 * current Lua execution. So we schedule our own task.
1063 */
1064 if (HLUA_IS_CTRLYIELDING(lua)) {
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001065 if (!yield_allowed || !lua->task)
1066 goto resume_execution;
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001067 task_wakeup(lua->task, TASK_WOKEN_MSG);
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01001068 }
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001069 if (!yield_allowed) {
1070 lua_settop(lua->T, 0); /* Empty the stack. */
1071 if (!lua_checkstack(lua->T, 1)) {
1072 ret = HLUA_E_ERR;
1073 break;
1074 }
1075 lua_pushfstring(lua->T, "yield not allowed");
1076 ret = HLUA_E_ERRMSG;
1077 break;
1078 }
1079 ret = HLUA_E_AGAIN;
1080 break;
1081
1082 case LUA_ERRRUN:
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001083
1084 /* Special exit case. The traditionnal exit is returned as an error
1085 * because the errors ares the only one mean to return immediately
1086 * from and lua execution.
1087 */
1088 if (lua->flags & HLUA_EXIT) {
1089 ret = HLUA_E_OK;
Thierry FOURNIERe1587b32015-08-28 09:54:13 +02001090 hlua_ctx_renew(lua, 0);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001091 break;
1092 }
1093
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001094 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001095 if (!lua_checkstack(lua->T, 1)) {
1096 ret = HLUA_E_ERR;
1097 break;
1098 }
1099 msg = lua_tostring(lua->T, -1);
1100 lua_settop(lua->T, 0); /* Empty the stack. */
1101 lua_pop(lua->T, 1);
1102 if (msg)
1103 lua_pushfstring(lua->T, "runtime error: %s", msg);
1104 else
1105 lua_pushfstring(lua->T, "unknown runtime error");
1106 ret = HLUA_E_ERRMSG;
1107 break;
1108
1109 case LUA_ERRMEM:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001110 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001111 lua_settop(lua->T, 0); /* Empty the stack. */
1112 if (!lua_checkstack(lua->T, 1)) {
1113 ret = HLUA_E_ERR;
1114 break;
1115 }
1116 lua_pushfstring(lua->T, "out of memory error");
1117 ret = HLUA_E_ERRMSG;
1118 break;
1119
1120 case LUA_ERRERR:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001121 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001122 if (!lua_checkstack(lua->T, 1)) {
1123 ret = HLUA_E_ERR;
1124 break;
1125 }
1126 msg = lua_tostring(lua->T, -1);
1127 lua_settop(lua->T, 0); /* Empty the stack. */
1128 lua_pop(lua->T, 1);
1129 if (msg)
1130 lua_pushfstring(lua->T, "message handler error: %s", msg);
1131 else
1132 lua_pushfstring(lua->T, "message handler error");
1133 ret = HLUA_E_ERRMSG;
1134 break;
1135
1136 default:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01001137 lua->wake_time = TICK_ETERNITY;
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001138 lua_settop(lua->T, 0); /* Empty the stack. */
1139 if (!lua_checkstack(lua->T, 1)) {
1140 ret = HLUA_E_ERR;
1141 break;
1142 }
1143 lua_pushfstring(lua->T, "unknonwn error");
1144 ret = HLUA_E_ERRMSG;
1145 break;
1146 }
1147
Thierry FOURNIER6ab4d8e2015-09-27 22:17:19 +02001148 /* This GC permits to destroy some object when a Lua timeout strikes. */
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02001149 if (lua->flags & HLUA_MUST_GC &&
1150 ret != HLUA_E_AGAIN)
Thierry FOURNIER6ab4d8e2015-09-27 22:17:19 +02001151 lua_gc(lua->T, LUA_GCCOLLECT, 0);
1152
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001153 switch (ret) {
1154 case HLUA_E_AGAIN:
1155 break;
1156
1157 case HLUA_E_ERRMSG:
Thierry FOURNIER847ca662016-12-16 13:07:22 +01001158 hlua_com_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001159 hlua_ctx_renew(lua, 1);
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001160 HLUA_CLR_RUN(lua);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001161 break;
1162
1163 case HLUA_E_ERR:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001164 HLUA_CLR_RUN(lua);
Thierry FOURNIER847ca662016-12-16 13:07:22 +01001165 hlua_com_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001166 hlua_ctx_renew(lua, 0);
1167 break;
1168
1169 case HLUA_E_OK:
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01001170 HLUA_CLR_RUN(lua);
Thierry FOURNIER847ca662016-12-16 13:07:22 +01001171 hlua_com_purge(&lua->com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01001172 break;
1173 }
1174
1175 return ret;
1176}
1177
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02001178/* This function exit the current code. */
1179__LJMP static int hlua_done(lua_State *L)
1180{
1181 struct hlua *hlua = hlua_gethlua(L);
1182
1183 hlua->flags |= HLUA_EXIT;
1184 WILL_LJMP(lua_error(L));
1185
1186 return 0;
1187}
1188
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001189/* This function is an LUA binding. It provides a function
1190 * for deleting ACL from a referenced ACL file.
1191 */
1192__LJMP static int hlua_del_acl(lua_State *L)
1193{
1194 const char *name;
1195 const char *key;
1196 struct pat_ref *ref;
1197
1198 MAY_LJMP(check_args(L, 2, "del_acl"));
1199
1200 name = MAY_LJMP(luaL_checkstring(L, 1));
1201 key = MAY_LJMP(luaL_checkstring(L, 2));
1202
1203 ref = pat_ref_lookup(name);
1204 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001205 WILL_LJMP(luaL_error(L, "'del_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001206
1207 pat_ref_delete(ref, key);
1208 return 0;
1209}
1210
1211/* This function is an LUA binding. It provides a function
1212 * for deleting map entry from a referenced map file.
1213 */
1214static int hlua_del_map(lua_State *L)
1215{
1216 const char *name;
1217 const char *key;
1218 struct pat_ref *ref;
1219
1220 MAY_LJMP(check_args(L, 2, "del_map"));
1221
1222 name = MAY_LJMP(luaL_checkstring(L, 1));
1223 key = MAY_LJMP(luaL_checkstring(L, 2));
1224
1225 ref = pat_ref_lookup(name);
1226 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001227 WILL_LJMP(luaL_error(L, "'del_map': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001228
1229 pat_ref_delete(ref, key);
1230 return 0;
1231}
1232
1233/* This function is an LUA binding. It provides a function
1234 * for adding ACL pattern from a referenced ACL file.
1235 */
1236static int hlua_add_acl(lua_State *L)
1237{
1238 const char *name;
1239 const char *key;
1240 struct pat_ref *ref;
1241
1242 MAY_LJMP(check_args(L, 2, "add_acl"));
1243
1244 name = MAY_LJMP(luaL_checkstring(L, 1));
1245 key = MAY_LJMP(luaL_checkstring(L, 2));
1246
1247 ref = pat_ref_lookup(name);
1248 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001249 WILL_LJMP(luaL_error(L, "'add_acl': unknown acl file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001250
1251 if (pat_ref_find_elt(ref, key) == NULL)
1252 pat_ref_add(ref, key, NULL, NULL);
1253 return 0;
1254}
1255
1256/* This function is an LUA binding. It provides a function
1257 * for setting map pattern and sample from a referenced map
1258 * file.
1259 */
1260static int hlua_set_map(lua_State *L)
1261{
1262 const char *name;
1263 const char *key;
1264 const char *value;
1265 struct pat_ref *ref;
1266
1267 MAY_LJMP(check_args(L, 3, "set_map"));
1268
1269 name = MAY_LJMP(luaL_checkstring(L, 1));
1270 key = MAY_LJMP(luaL_checkstring(L, 2));
1271 value = MAY_LJMP(luaL_checkstring(L, 3));
1272
1273 ref = pat_ref_lookup(name);
1274 if (!ref)
Vincent Bernata72db182015-10-06 16:05:59 +02001275 WILL_LJMP(luaL_error(L, "'set_map': unknown map file '%s'", name));
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01001276
1277 if (pat_ref_find_elt(ref, key) != NULL)
1278 pat_ref_set(ref, key, value, NULL);
1279 else
1280 pat_ref_add(ref, key, value, NULL);
1281 return 0;
1282}
1283
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01001284/* A class is a lot of memory that contain data. This data can be a table,
1285 * an integer or user data. This data is associated with a metatable. This
1286 * metatable have an original version registred in the global context with
1287 * the name of the object (_G[<name>] = <metable> ).
1288 *
1289 * A metable is a table that modify the standard behavior of a standard
1290 * access to the associated data. The entries of this new metatable are
1291 * defined as is:
1292 *
1293 * http://lua-users.org/wiki/MetatableEvents
1294 *
1295 * __index
1296 *
1297 * we access an absent field in a table, the result is nil. This is
1298 * true, but it is not the whole truth. Actually, such access triggers
1299 * the interpreter to look for an __index metamethod: If there is no
1300 * such method, as usually happens, then the access results in nil;
1301 * otherwise, the metamethod will provide the result.
1302 *
1303 * Control 'prototype' inheritance. When accessing "myTable[key]" and
1304 * the key does not appear in the table, but the metatable has an __index
1305 * property:
1306 *
1307 * - if the value is a function, the function is called, passing in the
1308 * table and the key; the return value of that function is returned as
1309 * the result.
1310 *
1311 * - if the value is another table, the value of the key in that table is
1312 * asked for and returned (and if it doesn't exist in that table, but that
1313 * table's metatable has an __index property, then it continues on up)
1314 *
1315 * - Use "rawget(myTable,key)" to skip this metamethod.
1316 *
1317 * http://www.lua.org/pil/13.4.1.html
1318 *
1319 * __newindex
1320 *
1321 * Like __index, but control property assignment.
1322 *
1323 * __mode - Control weak references. A string value with one or both
1324 * of the characters 'k' and 'v' which specifies that the the
1325 * keys and/or values in the table are weak references.
1326 *
1327 * __call - Treat a table like a function. When a table is followed by
1328 * parenthesis such as "myTable( 'foo' )" and the metatable has
1329 * a __call key pointing to a function, that function is invoked
1330 * (passing any specified arguments) and the return value is
1331 * returned.
1332 *
1333 * __metatable - Hide the metatable. When "getmetatable( myTable )" is
1334 * called, if the metatable for myTable has a __metatable
1335 * key, the value of that key is returned instead of the
1336 * actual metatable.
1337 *
1338 * __tostring - Control string representation. When the builtin
1339 * "tostring( myTable )" function is called, if the metatable
1340 * for myTable has a __tostring property set to a function,
1341 * that function is invoked (passing myTable to it) and the
1342 * return value is used as the string representation.
1343 *
1344 * __len - Control table length. When the table length is requested using
1345 * the length operator ( '#' ), if the metatable for myTable has
1346 * a __len key pointing to a function, that function is invoked
1347 * (passing myTable to it) and the return value used as the value
1348 * of "#myTable".
1349 *
1350 * __gc - Userdata finalizer code. When userdata is set to be garbage
1351 * collected, if the metatable has a __gc field pointing to a
1352 * function, that function is first invoked, passing the userdata
1353 * to it. The __gc metamethod is not called for tables.
1354 * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html)
1355 *
1356 * Special metamethods for redefining standard operators:
1357 * http://www.lua.org/pil/13.1.html
1358 *
1359 * __add "+"
1360 * __sub "-"
1361 * __mul "*"
1362 * __div "/"
1363 * __unm "!"
1364 * __pow "^"
1365 * __concat ".."
1366 *
1367 * Special methods for redfining standar relations
1368 * http://www.lua.org/pil/13.2.html
1369 *
1370 * __eq "=="
1371 * __lt "<"
1372 * __le "<="
1373 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001374
1375/*
1376 *
1377 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001378 * Class Map
1379 *
1380 *
1381 */
1382
1383/* Returns a struct hlua_map if the stack entry "ud" is
1384 * a class session, otherwise it throws an error.
1385 */
1386__LJMP static struct map_descriptor *hlua_checkmap(lua_State *L, int ud)
1387{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001388 return MAY_LJMP(hlua_checkudata(L, ud, class_map_ref));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001389}
1390
1391/* This function is the map constructor. It don't need
1392 * the class Map object. It creates and return a new Map
1393 * object. It must be called only during "body" or "init"
1394 * context because it process some filesystem accesses.
1395 */
1396__LJMP static int hlua_map_new(struct lua_State *L)
1397{
1398 const char *fn;
1399 int match = PAT_MATCH_STR;
1400 struct sample_conv conv;
1401 const char *file = "";
1402 int line = 0;
1403 lua_Debug ar;
1404 char *err = NULL;
1405 struct arg args[2];
1406
1407 if (lua_gettop(L) < 1 || lua_gettop(L) > 2)
1408 WILL_LJMP(luaL_error(L, "'new' needs at least 1 argument."));
1409
1410 fn = MAY_LJMP(luaL_checkstring(L, 1));
1411
1412 if (lua_gettop(L) >= 2) {
1413 match = MAY_LJMP(luaL_checkinteger(L, 2));
1414 if (match < 0 || match >= PAT_MATCH_NUM)
1415 WILL_LJMP(luaL_error(L, "'new' needs a valid match method."));
1416 }
1417
1418 /* Get Lua filename and line number. */
1419 if (lua_getstack(L, 1, &ar)) { /* check function at level */
1420 lua_getinfo(L, "Sl", &ar); /* get info about it */
1421 if (ar.currentline > 0) { /* is there info? */
1422 file = ar.short_src;
1423 line = ar.currentline;
1424 }
1425 }
1426
1427 /* fill fake sample_conv struct. */
1428 conv.kw = ""; /* unused. */
1429 conv.process = NULL; /* unused. */
1430 conv.arg_mask = 0; /* unused. */
1431 conv.val_args = NULL; /* unused. */
1432 conv.out_type = SMP_T_STR;
1433 conv.private = (void *)(long)match;
1434 switch (match) {
1435 case PAT_MATCH_STR: conv.in_type = SMP_T_STR; break;
1436 case PAT_MATCH_BEG: conv.in_type = SMP_T_STR; break;
1437 case PAT_MATCH_SUB: conv.in_type = SMP_T_STR; break;
1438 case PAT_MATCH_DIR: conv.in_type = SMP_T_STR; break;
1439 case PAT_MATCH_DOM: conv.in_type = SMP_T_STR; break;
1440 case PAT_MATCH_END: conv.in_type = SMP_T_STR; break;
1441 case PAT_MATCH_REG: conv.in_type = SMP_T_STR; break;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001442 case PAT_MATCH_INT: conv.in_type = SMP_T_SINT; break;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001443 case PAT_MATCH_IP: conv.in_type = SMP_T_ADDR; break;
1444 default:
1445 WILL_LJMP(luaL_error(L, "'new' doesn't support this match mode."));
1446 }
1447
1448 /* fill fake args. */
1449 args[0].type = ARGT_STR;
1450 args[0].data.str.str = (char *)fn;
1451 args[1].type = ARGT_STOP;
1452
1453 /* load the map. */
1454 if (!sample_load_map(args, &conv, file, line, &err)) {
1455 /* error case: we cant use luaL_error because we must
1456 * free the err variable.
1457 */
1458 luaL_where(L, 1);
1459 lua_pushfstring(L, "'new': %s.", err);
1460 lua_concat(L, 2);
1461 free(err);
1462 WILL_LJMP(lua_error(L));
1463 }
1464
1465 /* create the lua object. */
1466 lua_newtable(L);
1467 lua_pushlightuserdata(L, args[0].data.map);
1468 lua_rawseti(L, -2, 0);
1469
1470 /* Pop a class Map metatable and affect it to the userdata. */
1471 lua_rawgeti(L, LUA_REGISTRYINDEX, class_map_ref);
1472 lua_setmetatable(L, -2);
1473
1474
1475 return 1;
1476}
1477
1478__LJMP static inline int _hlua_map_lookup(struct lua_State *L, int str)
1479{
1480 struct map_descriptor *desc;
1481 struct pattern *pat;
1482 struct sample smp;
1483
1484 MAY_LJMP(check_args(L, 2, "lookup"));
1485 desc = MAY_LJMP(hlua_checkmap(L, 1));
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02001486 if (desc->pat.expect_type == SMP_T_SINT) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001487 smp.data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001488 smp.data.u.sint = MAY_LJMP(luaL_checkinteger(L, 2));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001489 }
1490 else {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001491 smp.data.type = SMP_T_STR;
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001492 smp.flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001493 smp.data.u.str.str = (char *)MAY_LJMP(luaL_checklstring(L, 2, (size_t *)&smp.data.u.str.len));
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001494 }
1495
1496 pat = pattern_exec_match(&desc->pat, &smp, 1);
Thierry FOURNIER503bb092015-08-19 08:35:43 +02001497 if (!pat || !pat->data) {
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001498 if (str)
1499 lua_pushstring(L, "");
1500 else
1501 lua_pushnil(L);
1502 return 1;
1503 }
1504
1505 /* The Lua pattern must return a string, so we can't check the returned type */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001506 lua_pushlstring(L, pat->data->u.str.str, pat->data->u.str.len);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02001507 return 1;
1508}
1509
1510__LJMP static int hlua_map_lookup(struct lua_State *L)
1511{
1512 return _hlua_map_lookup(L, 0);
1513}
1514
1515__LJMP static int hlua_map_slookup(struct lua_State *L)
1516{
1517 return _hlua_map_lookup(L, 1);
1518}
1519
1520/*
1521 *
1522 *
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001523 * Class Socket
1524 *
1525 *
1526 */
1527
1528__LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud)
1529{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001530 return MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001531}
1532
1533/* This function is the handler called for each I/O on the established
1534 * connection. It is used for notify space avalaible to send or data
1535 * received.
1536 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001537static void hlua_socket_handler(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001538{
Willy Tarreau00a37f02015-04-13 12:05:19 +02001539 struct stream_interface *si = appctx->owner;
Willy Tarreau50fe03b2014-11-28 13:59:31 +01001540 struct connection *c = objt_conn(si_opposite(si)->end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001541
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001542 /* If the connection object is not avalaible, close all the
1543 * streams and wakeup everithing waiting for.
1544 */
1545 if (!c) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001546 si_shutw(si);
1547 si_shutr(si);
Willy Tarreau2bb4a962014-11-28 11:11:05 +01001548 si_ic(si)->flags |= CF_READ_NULL;
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001549 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1550 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001551 return;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001552 }
1553
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001554 /* If we cant write, wakeup the pending write signals. */
1555 if (channel_output_closed(si_ic(si)))
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001556 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001557
1558 /* If we cant read, wakeup the pending read signals. */
1559 if (channel_input_closed(si_oc(si)))
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001560 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER6d695e62015-09-27 19:29:38 +02001561
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001562 /* if the connection is not estabkished, inform the stream that we want
1563 * to be notified whenever the connection completes.
1564 */
1565 if (!(c->flags & CO_FL_CONNECTED)) {
1566 si_applet_cant_get(si);
1567 si_applet_cant_put(si);
Willy Tarreaud4da1962015-04-20 01:31:23 +02001568 return;
Thierry FOURNIER316e3192015-09-04 18:25:53 +02001569 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001570
1571 /* This function is called after the connect. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001572 appctx->ctx.hlua_cosocket.connected = 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001573
1574 /* Wake the tasks which wants to write if the buffer have avalaible space. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001575 if (channel_may_recv(si_ic(si)))
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001576 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001577
1578 /* Wake the tasks which wants to read if the buffer contains data. */
Thierry FOURNIEReba6f642015-09-26 22:01:07 +02001579 if (!channel_is_empty(si_oc(si)))
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001580 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001581}
1582
Willy Tarreau87b09662015-04-03 00:22:06 +02001583/* This function is called when the "struct stream" is destroyed.
1584 * Remove the link from the object to this stream.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001585 * Wake all the pending signals.
1586 */
Willy Tarreau00a37f02015-04-13 12:05:19 +02001587static void hlua_socket_release(struct appctx *appctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001588{
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001589 /* Remove my link in the original object. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001590 if (appctx->ctx.hlua_cosocket.socket)
1591 appctx->ctx.hlua_cosocket.socket->s = NULL;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001592
1593 /* Wake all the task waiting for me. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001594 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_read);
1595 hlua_com_wake(&appctx->ctx.hlua_cosocket.wake_on_write);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001596}
1597
1598/* If the garbage collectio of the object is launch, nobody
Willy Tarreau87b09662015-04-03 00:22:06 +02001599 * uses this object. If the stream does not exists, just quit.
1600 * Send the shutdown signal to the stream. In some cases,
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001601 * pending signal can rest in the read and write lists. destroy
1602 * it.
1603 */
1604__LJMP static int hlua_socket_gc(lua_State *L)
1605{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001606 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001607 struct appctx *appctx;
1608
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001609 MAY_LJMP(check_args(L, 1, "__gc"));
1610
1611 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001612 if (!socket->s)
1613 return 0;
1614
Willy Tarreau87b09662015-04-03 00:22:06 +02001615 /* Remove all reference between the Lua stack and the coroutine stream. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001616 appctx = objt_appctx(socket->s->si[0].end);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001617 stream_shutdown(socket->s, SF_ERR_KILLED);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001618 socket->s = NULL;
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001619 appctx->ctx.hlua_cosocket.socket = NULL;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001620
1621 return 0;
1622}
1623
1624/* The close function send shutdown signal and break the
Willy Tarreau87b09662015-04-03 00:22:06 +02001625 * links between the stream and the object.
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001626 */
1627__LJMP static int hlua_socket_close(lua_State *L)
1628{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001629 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001630 struct appctx *appctx;
1631
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001632 MAY_LJMP(check_args(L, 1, "close"));
1633
1634 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001635 if (!socket->s)
1636 return 0;
1637
Willy Tarreau87b09662015-04-03 00:22:06 +02001638 /* Close the stream and remove the associated stop task. */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001639 stream_shutdown(socket->s, SF_ERR_KILLED);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001640 appctx = objt_appctx(socket->s->si[0].end);
Thierry FOURNIER18d09902016-12-16 09:25:38 +01001641 appctx->ctx.hlua_cosocket.socket = NULL;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001642 socket->s = NULL;
1643
1644 return 0;
1645}
1646
1647/* This Lua function assumes that the stack contain three parameters.
1648 * 1 - USERDATA containing a struct socket
1649 * 2 - INTEGER with values of the macro defined below
1650 * If the integer is -1, we must read at most one line.
1651 * If the integer is -2, we ust read all the data until the
1652 * end of the stream.
1653 * If the integer is positive value, we must read a number of
1654 * bytes corresponding to this value.
1655 */
1656#define HLSR_READ_LINE (-1)
1657#define HLSR_READ_ALL (-2)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001658__LJMP static int hlua_socket_receive_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001659{
1660 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
1661 int wanted = lua_tointeger(L, 2);
1662 struct hlua *hlua = hlua_gethlua(L);
1663 struct appctx *appctx;
1664 int len;
1665 int nblk;
1666 char *blk1;
1667 int len1;
1668 char *blk2;
1669 int len2;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001670 int skip_at_end = 0;
Willy Tarreau81389672015-03-10 12:03:52 +01001671 struct channel *oc;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001672
1673 /* Check if this lua stack is schedulable. */
1674 if (!hlua || !hlua->task)
1675 WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in "
1676 "'frontend', 'backend' or 'task'"));
1677
1678 /* check for connection closed. If some data where read, return it. */
1679 if (!socket->s)
1680 goto connection_closed;
1681
Willy Tarreau94aa6172015-03-13 14:19:06 +01001682 oc = &socket->s->res;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001683 if (wanted == HLSR_READ_LINE) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001684 /* Read line. */
Willy Tarreau81389672015-03-10 12:03:52 +01001685 nblk = bo_getline_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001686 if (nblk < 0) /* Connection close. */
1687 goto connection_closed;
1688 if (nblk == 0) /* No data avalaible. */
1689 goto connection_empty;
Thierry FOURNIER00543922015-03-09 18:35:06 +01001690
1691 /* remove final \r\n. */
1692 if (nblk == 1) {
1693 if (blk1[len1-1] == '\n') {
1694 len1--;
1695 skip_at_end++;
1696 if (blk1[len1-1] == '\r') {
1697 len1--;
1698 skip_at_end++;
1699 }
1700 }
1701 }
1702 else {
1703 if (blk2[len2-1] == '\n') {
1704 len2--;
1705 skip_at_end++;
1706 if (blk2[len2-1] == '\r') {
1707 len2--;
1708 skip_at_end++;
1709 }
1710 }
1711 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001712 }
1713
1714 else if (wanted == HLSR_READ_ALL) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001715 /* Read all the available data. */
Willy Tarreau81389672015-03-10 12:03:52 +01001716 nblk = bo_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001717 if (nblk < 0) /* Connection close. */
1718 goto connection_closed;
1719 if (nblk == 0) /* No data avalaible. */
1720 goto connection_empty;
1721 }
1722
1723 else {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001724 /* Read a block of data. */
Willy Tarreau81389672015-03-10 12:03:52 +01001725 nblk = bo_getblk_nc(oc, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001726 if (nblk < 0) /* Connection close. */
1727 goto connection_closed;
1728 if (nblk == 0) /* No data avalaible. */
1729 goto connection_empty;
1730
1731 if (len1 > wanted) {
1732 nblk = 1;
1733 len1 = wanted;
1734 } if (nblk == 2 && len1 + len2 > wanted)
1735 len2 = wanted - len1;
1736 }
1737
1738 len = len1;
1739
1740 luaL_addlstring(&socket->b, blk1, len1);
1741 if (nblk == 2) {
1742 len += len2;
1743 luaL_addlstring(&socket->b, blk2, len2);
1744 }
1745
1746 /* Consume data. */
Willy Tarreau81389672015-03-10 12:03:52 +01001747 bo_skip(oc, len + skip_at_end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001748
1749 /* Don't wait anything. */
Willy Tarreaude70fa12015-09-26 11:25:05 +02001750 stream_int_notify(&socket->s->si[0]);
1751 stream_int_update_applet(&socket->s->si[0]);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001752
1753 /* If the pattern reclaim to read all the data
1754 * in the connection, got out.
1755 */
1756 if (wanted == HLSR_READ_ALL)
1757 goto connection_empty;
1758 else if (wanted >= 0 && len < wanted)
1759 goto connection_empty;
1760
1761 /* Return result. */
1762 luaL_pushresult(&socket->b);
1763 return 1;
1764
1765connection_closed:
1766
1767 /* If the buffer containds data. */
1768 if (socket->b.n > 0) {
1769 luaL_pushresult(&socket->b);
1770 return 1;
1771 }
1772 lua_pushnil(L);
1773 lua_pushstring(L, "connection closed.");
1774 return 2;
1775
1776connection_empty:
1777
1778 appctx = objt_appctx(socket->s->si[0].end);
Thierry FOURNIER847ca662016-12-16 13:07:22 +01001779 if (!hlua_com_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_read, hlua->task))
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001780 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +01001781 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_receive_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001782 return 0;
1783}
1784
1785/* This Lus function gets two parameters. The first one can be string
1786 * or a number. If the string is "*l", the user require one line. If
1787 * the string is "*a", the user require all the content of the stream.
1788 * If the value is a number, the user require a number of bytes equal
1789 * to the value. The default value is "*l" (a line).
1790 *
1791 * This paraeter with a variable type is converted in integer. This
1792 * integer takes this values:
1793 * -1 : read a line
1794 * -2 : read all the stream
1795 * >0 : amount if bytes.
1796 *
1797 * The second parameter is optinal. It contains a string that must be
1798 * concatenated with the read data.
1799 */
1800__LJMP static int hlua_socket_receive(struct lua_State *L)
1801{
1802 int wanted = HLSR_READ_LINE;
1803 const char *pattern;
1804 int type;
1805 char *error;
1806 size_t len;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001807 struct hlua_socket *socket;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001808
1809 if (lua_gettop(L) < 1 || lua_gettop(L) > 3)
1810 WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments."));
1811
Willy Tarreau80f5fae2015-02-27 16:38:20 +01001812 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001813
1814 /* check for pattern. */
1815 if (lua_gettop(L) >= 2) {
1816 type = lua_type(L, 2);
1817 if (type == LUA_TSTRING) {
1818 pattern = lua_tostring(L, 2);
1819 if (strcmp(pattern, "*a") == 0)
1820 wanted = HLSR_READ_ALL;
1821 else if (strcmp(pattern, "*l") == 0)
1822 wanted = HLSR_READ_LINE;
1823 else {
1824 wanted = strtoll(pattern, &error, 10);
1825 if (*error != '\0')
1826 WILL_LJMP(luaL_error(L, "Unsupported pattern."));
1827 }
1828 }
1829 else if (type == LUA_TNUMBER) {
1830 wanted = lua_tointeger(L, 2);
1831 if (wanted < 0)
1832 WILL_LJMP(luaL_error(L, "Unsupported size."));
1833 }
1834 }
1835
1836 /* Set pattern. */
1837 lua_pushinteger(L, wanted);
1838 lua_replace(L, 2);
1839
1840 /* init bufffer, and fiil it wih prefix. */
1841 luaL_buffinit(L, &socket->b);
1842
1843 /* Check prefix. */
1844 if (lua_gettop(L) >= 3) {
1845 if (lua_type(L, 3) != LUA_TSTRING)
1846 WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix"));
1847 pattern = lua_tolstring(L, 3, &len);
1848 luaL_addlstring(&socket->b, pattern, len);
1849 }
1850
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001851 return __LJMP(hlua_socket_receive_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001852}
1853
1854/* Write the Lua input string in the output buffer.
1855 * This fucntion returns a yield if no space are available.
1856 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001857static int hlua_socket_write_yield(struct lua_State *L,int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001858{
1859 struct hlua_socket *socket;
1860 struct hlua *hlua = hlua_gethlua(L);
1861 struct appctx *appctx;
1862 size_t buf_len;
1863 const char *buf;
1864 int len;
1865 int send_len;
1866 int sent;
1867
1868 /* Check if this lua stack is schedulable. */
1869 if (!hlua || !hlua->task)
1870 WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in "
1871 "'frontend', 'backend' or 'task'"));
1872
1873 /* Get object */
1874 socket = MAY_LJMP(hlua_checksocket(L, 1));
1875 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001876 sent = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001877
1878 /* Check for connection close. */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001879 if (!socket->s || channel_output_closed(&socket->s->req)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001880 lua_pushinteger(L, -1);
1881 return 1;
1882 }
1883
1884 /* Update the input buffer data. */
1885 buf += sent;
1886 send_len = buf_len - sent;
1887
1888 /* All the data are sent. */
1889 if (sent >= buf_len)
1890 return 1; /* Implicitly return the length sent. */
1891
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01001892 /* Check if the buffer is avalaible because HAProxy doesn't allocate
1893 * the request buffer if its not required.
1894 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001895 if (socket->s->req.buf->size == 0) {
Christopher Faulet33834b12016-12-19 09:29:06 +01001896 appctx = hlua->task->context;
1897 if (!channel_alloc_buffer(&socket->s->req, &appctx->buffer_wait))
1898 goto hlua_socket_write_yield_return;
Thierry FOURNIER486d52a2015-03-09 17:51:43 +01001899 }
1900
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001901 /* Check for avalaible space. */
Willy Tarreau94aa6172015-03-13 14:19:06 +01001902 len = buffer_total_space(socket->s->req.buf);
Christopher Faulet33834b12016-12-19 09:29:06 +01001903 if (len <= 0) {
1904 appctx = objt_appctx(socket->s->si[0].end);
1905 if (!hlua_com_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task))
1906 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001907 goto hlua_socket_write_yield_return;
Christopher Faulet33834b12016-12-19 09:29:06 +01001908 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001909
1910 /* send data */
1911 if (len < send_len)
1912 send_len = len;
Willy Tarreau94aa6172015-03-13 14:19:06 +01001913 len = bi_putblk(&socket->s->req, buf+sent, send_len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001914
1915 /* "Not enough space" (-1), "Buffer too little to contain
1916 * the data" (-2) are not expected because the available length
1917 * is tested.
1918 * Other unknown error are also not expected.
1919 */
1920 if (len <= 0) {
Willy Tarreaubc18da12015-03-13 14:00:47 +01001921 if (len == -1)
Willy Tarreau94aa6172015-03-13 14:19:06 +01001922 socket->s->req.flags |= CF_WAKE_WRITE;
Willy Tarreaubc18da12015-03-13 14:00:47 +01001923
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001924 MAY_LJMP(hlua_socket_close(L));
1925 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001926 lua_pushinteger(L, -1);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001927 return 1;
1928 }
1929
1930 /* update buffers. */
Willy Tarreaude70fa12015-09-26 11:25:05 +02001931 stream_int_notify(&socket->s->si[0]);
1932 stream_int_update_applet(&socket->s->si[0]);
1933
Willy Tarreau94aa6172015-03-13 14:19:06 +01001934 socket->s->req.rex = TICK_ETERNITY;
1935 socket->s->res.wex = TICK_ETERNITY;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001936
1937 /* Update length sent. */
1938 lua_pop(L, 1);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01001939 lua_pushinteger(L, sent + len);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001940
1941 /* All the data buffer is sent ? */
1942 if (sent + len >= buf_len)
1943 return 1;
1944
1945hlua_socket_write_yield_return:
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +01001946 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_write_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01001947 return 0;
1948}
1949
1950/* This function initiate the send of data. It just check the input
1951 * parameters and push an integer in the Lua stack that contain the
1952 * amount of data writed in the buffer. This is used by the function
1953 * "hlua_socket_write_yield" that can yield.
1954 *
1955 * The Lua function gets between 3 and 4 parameters. The first one is
1956 * the associated object. The second is a string buffer. The third is
1957 * a facultative integer that represents where is the buffer position
1958 * of the start of the data that can send. The first byte is the
1959 * position "1". The default value is "1". The fourth argument is a
1960 * facultative integer that represents where is the buffer position
1961 * of the end of the data that can send. The default is the last byte.
1962 */
1963static int hlua_socket_send(struct lua_State *L)
1964{
1965 int i;
1966 int j;
1967 const char *buf;
1968 size_t buf_len;
1969
1970 /* Check number of arguments. */
1971 if (lua_gettop(L) < 2 || lua_gettop(L) > 4)
1972 WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments"));
1973
1974 /* Get the string. */
1975 buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len));
1976
1977 /* Get and check j. */
1978 if (lua_gettop(L) == 4) {
1979 j = MAY_LJMP(luaL_checkinteger(L, 4));
1980 if (j < 0)
1981 j = buf_len + j + 1;
1982 if (j > buf_len)
1983 j = buf_len + 1;
1984 lua_pop(L, 1);
1985 }
1986 else
1987 j = buf_len;
1988
1989 /* Get and check i. */
1990 if (lua_gettop(L) == 3) {
1991 i = MAY_LJMP(luaL_checkinteger(L, 3));
1992 if (i < 0)
1993 i = buf_len + i + 1;
1994 if (i > buf_len)
1995 i = buf_len + 1;
1996 lua_pop(L, 1);
1997 } else
1998 i = 1;
1999
2000 /* Check bth i and j. */
2001 if (i > j) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002002 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002003 return 1;
2004 }
2005 if (i == 0 && j == 0) {
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002006 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002007 return 1;
2008 }
2009 if (i == 0)
2010 i = 1;
2011 if (j == 0)
2012 j = 1;
2013
2014 /* Pop the string. */
2015 lua_pop(L, 1);
2016
2017 /* Update the buffer length. */
2018 buf += i - 1;
2019 buf_len = j - i + 1;
2020 lua_pushlstring(L, buf, buf_len);
2021
2022 /* This unsigned is used to remember the amount of sent data. */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002023 lua_pushinteger(L, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002024
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002025 return MAY_LJMP(hlua_socket_write_yield(L, 0, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002026}
2027
Willy Tarreau22b0a682015-06-17 19:43:49 +02002028#define SOCKET_INFO_MAX_LEN sizeof("[0000:0000:0000:0000:0000:0000:0000:0000]:12345")
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002029__LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr)
2030{
2031 static char buffer[SOCKET_INFO_MAX_LEN];
2032 int ret;
2033 int len;
2034 char *p;
2035
2036 ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1);
2037 if (ret <= 0) {
2038 lua_pushnil(L);
2039 return 1;
2040 }
2041
2042 if (ret == AF_UNIX) {
2043 lua_pushstring(L, buffer+1);
2044 return 1;
2045 }
2046 else if (ret == AF_INET6) {
2047 buffer[0] = '[';
2048 len = strlen(buffer);
2049 buffer[len] = ']';
2050 len++;
2051 buffer[len] = ':';
2052 len++;
2053 p = buffer;
2054 }
2055 else if (ret == AF_INET) {
2056 p = buffer + 1;
2057 len = strlen(p);
2058 p[len] = ':';
2059 len++;
2060 }
2061 else {
2062 lua_pushnil(L);
2063 return 1;
2064 }
2065
2066 if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) {
2067 lua_pushnil(L);
2068 return 1;
2069 }
2070
2071 lua_pushstring(L, p);
2072 return 1;
2073}
2074
2075/* Returns information about the peer of the connection. */
2076__LJMP static int hlua_socket_getpeername(struct lua_State *L)
2077{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002078 struct hlua_socket *socket;
2079 struct connection *conn;
2080
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002081 MAY_LJMP(check_args(L, 1, "getpeername"));
2082
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002083 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002084
2085 /* Check if the tcp object is avalaible. */
2086 if (!socket->s) {
2087 lua_pushnil(L);
2088 return 1;
2089 }
2090
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002091 conn = objt_conn(socket->s->si[1].end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002092 if (!conn) {
2093 lua_pushnil(L);
2094 return 1;
2095 }
2096
Willy Tarreaua71f6422016-11-16 17:00:14 +01002097 conn_get_to_addr(conn);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002098 if (!(conn->flags & CO_FL_ADDR_TO_SET)) {
Willy Tarreaua71f6422016-11-16 17:00:14 +01002099 lua_pushnil(L);
2100 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002101 }
2102
2103 return MAY_LJMP(hlua_socket_info(L, &conn->addr.to));
2104}
2105
2106/* Returns information about my connection side. */
2107static int hlua_socket_getsockname(struct lua_State *L)
2108{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002109 struct hlua_socket *socket;
2110 struct connection *conn;
2111
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002112 MAY_LJMP(check_args(L, 1, "getsockname"));
2113
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002114 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002115
2116 /* Check if the tcp object is avalaible. */
2117 if (!socket->s) {
2118 lua_pushnil(L);
2119 return 1;
2120 }
2121
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002122 conn = objt_conn(socket->s->si[1].end);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002123 if (!conn) {
2124 lua_pushnil(L);
2125 return 1;
2126 }
2127
Willy Tarreaua71f6422016-11-16 17:00:14 +01002128 conn_get_from_addr(conn);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002129 if (!(conn->flags & CO_FL_ADDR_FROM_SET)) {
Willy Tarreaua71f6422016-11-16 17:00:14 +01002130 lua_pushnil(L);
2131 return 1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002132 }
2133
2134 return hlua_socket_info(L, &conn->addr.from);
2135}
2136
2137/* This struct define the applet. */
Willy Tarreau30576452015-04-13 13:50:30 +02002138static struct applet update_applet = {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002139 .obj_type = OBJ_TYPE_APPLET,
2140 .name = "<LUA_TCP>",
2141 .fct = hlua_socket_handler,
2142 .release = hlua_socket_release,
2143};
2144
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002145__LJMP static int hlua_socket_connect_yield(struct lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002146{
2147 struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1));
2148 struct hlua *hlua = hlua_gethlua(L);
2149 struct appctx *appctx;
2150
2151 /* Check for connection close. */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01002152 if (!hlua || !socket->s || channel_output_closed(&socket->s->req)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002153 lua_pushnil(L);
2154 lua_pushstring(L, "Can't connect");
2155 return 2;
2156 }
2157
2158 appctx = objt_appctx(socket->s->si[0].end);
2159
2160 /* Check for connection established. */
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002161 if (appctx->ctx.hlua_cosocket.connected) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002162 lua_pushinteger(L, 1);
2163 return 1;
2164 }
2165
Thierry FOURNIER847ca662016-12-16 13:07:22 +01002166 if (!hlua_com_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task))
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002167 WILL_LJMP(luaL_error(L, "out of memory error"));
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +01002168 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002169 return 0;
2170}
2171
2172/* This function fail or initite the connection. */
2173__LJMP static int hlua_socket_connect(struct lua_State *L)
2174{
2175 struct hlua_socket *socket;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002176 int port = -1;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002177 const char *ip;
2178 struct connection *conn;
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002179 struct hlua *hlua;
2180 struct appctx *appctx;
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002181 int low, high;
2182 struct sockaddr_storage *addr;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002183
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002184 if (lua_gettop(L) < 2)
2185 WILL_LJMP(luaL_error(L, "connect: need at least 2 arguments"));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002186
2187 /* Get args. */
2188 socket = MAY_LJMP(hlua_checksocket(L, 1));
2189 ip = MAY_LJMP(luaL_checkstring(L, 2));
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002190 if (lua_gettop(L) >= 3)
2191 port = MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002192
Willy Tarreau973a5422015-08-05 21:47:23 +02002193 conn = si_alloc_conn(&socket->s->si[1]);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002194 if (!conn)
2195 WILL_LJMP(luaL_error(L, "connect: internal error"));
2196
Willy Tarreau3adac082015-09-26 17:51:09 +02002197 /* needed for the connection not to be closed */
2198 conn->target = socket->s->target;
2199
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002200 /* Parse ip address. */
Willy Tarreau48ef4c92017-01-06 18:32:38 +01002201 addr = str2sa_range(ip, NULL, &low, &high, NULL, NULL, NULL, 0);
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002202 if (!addr)
2203 WILL_LJMP(luaL_error(L, "connect: cannot parse destination address '%s'", ip));
2204 if (low != high)
2205 WILL_LJMP(luaL_error(L, "connect: port ranges not supported : address '%s'", ip));
2206 memcpy(&conn->addr.to, addr, sizeof(struct sockaddr_storage));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002207
2208 /* Set port. */
Thierry FOURNIERc2f56532015-09-26 20:23:30 +02002209 if (low == 0) {
2210 if (conn->addr.to.ss_family == AF_INET) {
2211 if (port == -1)
2212 WILL_LJMP(luaL_error(L, "connect: port missing"));
2213 ((struct sockaddr_in *)&conn->addr.to)->sin_port = htons(port);
2214 } else if (conn->addr.to.ss_family == AF_INET6) {
2215 if (port == -1)
2216 WILL_LJMP(luaL_error(L, "connect: port missing"));
2217 ((struct sockaddr_in6 *)&conn->addr.to)->sin6_port = htons(port);
2218 }
2219 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002220
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002221 hlua = hlua_gethlua(L);
2222 appctx = objt_appctx(socket->s->si[0].end);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002223
2224 /* inform the stream that we want to be notified whenever the
2225 * connection completes.
2226 */
2227 si_applet_cant_get(&socket->s->si[0]);
2228 si_applet_cant_put(&socket->s->si[0]);
Thierry FOURNIER8c8fbbe2015-09-26 17:02:35 +02002229 appctx_wakeup(appctx);
Willy Tarreaubdc97a82015-08-24 15:42:28 +02002230
Thierry FOURNIER7c39ab42015-09-27 22:53:33 +02002231 hlua->flags |= HLUA_MUST_GC;
2232
Thierry FOURNIER847ca662016-12-16 13:07:22 +01002233 if (!hlua_com_new(&hlua->com, &appctx->ctx.hlua_cosocket.wake_on_write, hlua->task))
Thierry FOURNIER95ad96a2015-03-09 18:12:40 +01002234 WILL_LJMP(luaL_error(L, "out of memory"));
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +01002235 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0));
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002236
2237 return 0;
2238}
2239
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002240#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002241__LJMP static int hlua_socket_connect_ssl(struct lua_State *L)
2242{
2243 struct hlua_socket *socket;
2244
2245 MAY_LJMP(check_args(L, 3, "connect_ssl"));
2246 socket = MAY_LJMP(hlua_checksocket(L, 1));
2247 socket->s->target = &socket_ssl.obj_type;
2248 return MAY_LJMP(hlua_socket_connect(L));
2249}
Baptiste Assmann84bb4932015-03-02 21:40:06 +01002250#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002251
2252__LJMP static int hlua_socket_setoption(struct lua_State *L)
2253{
2254 return 0;
2255}
2256
2257__LJMP static int hlua_socket_settimeout(struct lua_State *L)
2258{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002259 struct hlua_socket *socket;
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002260 int tmout;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002261
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002262 MAY_LJMP(check_args(L, 2, "settimeout"));
2263
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002264 socket = MAY_LJMP(hlua_checksocket(L, 1));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002265 tmout = MAY_LJMP(luaL_checkinteger(L, 2)) * 1000;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002266
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01002267 socket->s->req.rto = tmout;
2268 socket->s->req.wto = tmout;
2269 socket->s->res.rto = tmout;
2270 socket->s->res.wto = tmout;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002271
2272 return 0;
2273}
2274
2275__LJMP static int hlua_socket_new(lua_State *L)
2276{
2277 struct hlua_socket *socket;
2278 struct appctx *appctx;
Willy Tarreau15b5e142015-04-04 14:38:25 +02002279 struct session *sess;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002280 struct stream *strm;
Willy Tarreaud420a972015-04-06 00:39:18 +02002281 struct task *task;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002282
2283 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002284 if (!lua_checkstack(L, 3)) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002285 hlua_pusherror(L, "socket: full stack");
2286 goto out_fail_conf;
2287 }
2288
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002289 /* Create the object: obj[0] = userdata. */
2290 lua_newtable(L);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002291 socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket)));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002292 lua_rawseti(L, -2, 0);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002293 memset(socket, 0, sizeof(*socket));
2294
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002295 /* Check if the various memory pools are intialized. */
Willy Tarreau87b09662015-04-03 00:22:06 +02002296 if (!pool2_stream || !pool2_buffer) {
Thierry FOURNIER4a6170c2015-03-09 17:07:10 +01002297 hlua_pusherror(L, "socket: uninitialized pools.");
2298 goto out_fail_conf;
2299 }
2300
Willy Tarreau87b09662015-04-03 00:22:06 +02002301 /* Pop a class stream metatable and affect it to the userdata. */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002302 lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref);
2303 lua_setmetatable(L, -2);
2304
Willy Tarreaud420a972015-04-06 00:39:18 +02002305 /* Create the applet context */
2306 appctx = appctx_new(&update_applet);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002307 if (!appctx) {
2308 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaufeb76402015-04-03 14:10:06 +02002309 goto out_fail_conf;
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002310 }
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002311
Thierry FOURNIER18d09902016-12-16 09:25:38 +01002312 appctx->ctx.hlua_cosocket.socket = socket;
2313 appctx->ctx.hlua_cosocket.connected = 0;
2314 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_write);
2315 LIST_INIT(&appctx->ctx.hlua_cosocket.wake_on_read);
Willy Tarreaub2bf8332015-04-04 15:58:58 +02002316
Willy Tarreaud420a972015-04-06 00:39:18 +02002317 /* Now create a session, task and stream for this applet */
2318 sess = session_new(&socket_proxy, NULL, &appctx->obj_type);
2319 if (!sess) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002320 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002321 goto out_fail_sess;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002322 }
2323
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002324 task = task_new();
2325 if (!task) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002326 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaufeb76402015-04-03 14:10:06 +02002327 goto out_fail_task;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002328 }
Willy Tarreaud420a972015-04-06 00:39:18 +02002329 task->nice = 0;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002330
Willy Tarreau73b65ac2015-04-08 18:26:29 +02002331 strm = stream_new(sess, task, &appctx->obj_type);
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002332 if (!strm) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002333 hlua_pusherror(L, "socket: out of memory");
Willy Tarreaud420a972015-04-06 00:39:18 +02002334 goto out_fail_stream;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002335 }
2336
Willy Tarreaud420a972015-04-06 00:39:18 +02002337 /* Configure an empty Lua for the stream. */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002338 socket->s = strm;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01002339 strm->hlua = NULL;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002340
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002341 /* Configure "right" stream interface. this "si" is used to connect
2342 * and retrieve data from the server. The connection is initialized
2343 * with the "struct server".
2344 */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002345 si_set_state(&strm->si[1], SI_ST_ASS);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002346
2347 /* Force destination server. */
Willy Tarreau61cf7c82015-04-06 00:48:33 +02002348 strm->flags |= SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET | SF_BE_ASSIGNED;
2349 strm->target = &socket_tcp.obj_type;
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002350
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002351 /* Update statistics counters. */
2352 socket_proxy.feconn++; /* beconn will be increased later */
2353 jobs++;
2354 totalconn++;
2355
2356 /* Return yield waiting for connection. */
2357 return 1;
2358
Willy Tarreaud420a972015-04-06 00:39:18 +02002359 out_fail_stream:
2360 task_free(task);
2361 out_fail_task:
Willy Tarreau11c36242015-04-04 15:54:03 +02002362 session_free(sess);
Willy Tarreaud420a972015-04-06 00:39:18 +02002363 out_fail_sess:
2364 appctx_free(appctx);
2365 out_fail_conf:
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01002366 WILL_LJMP(lua_error(L));
2367 return 0;
2368}
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01002369
2370/*
2371 *
2372 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002373 * Class Channel
2374 *
2375 *
2376 */
2377
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002378/* The state between the channel data and the HTTP parser state can be
2379 * unconsistent, so reset the parser and call it again. Warning, this
2380 * action not revalidate the request and not send a 400 if the modified
2381 * resuest is not valid.
2382 *
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01002383 * This function never fails. The direction is set using dir, which equals
2384 * either SMP_OPT_DIR_REQ or SMP_OPT_DIR_RES.
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002385 */
2386static void hlua_resynchonize_proto(struct stream *stream, int dir)
2387{
2388 /* Protocol HTTP. */
2389 if (stream->be->mode == PR_MODE_HTTP) {
2390
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01002391 if (dir == SMP_OPT_DIR_REQ)
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002392 http_txn_reset_req(stream->txn);
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01002393 else if (dir == SMP_OPT_DIR_RES)
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002394 http_txn_reset_res(stream->txn);
2395
2396 if (stream->txn->hdr_idx.v)
2397 hdr_idx_init(&stream->txn->hdr_idx);
2398
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01002399 if (dir == SMP_OPT_DIR_REQ)
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002400 http_msg_analyzer(&stream->txn->req, &stream->txn->hdr_idx);
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01002401 else if (dir == SMP_OPT_DIR_RES)
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002402 http_msg_analyzer(&stream->txn->rsp, &stream->txn->hdr_idx);
2403 }
2404}
2405
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002406/* This function is called before the Lua execution. It stores
2407 * the differents parsers state before executing some Lua code.
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002408 */
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002409static inline void consistency_set(struct stream *stream, int opt, struct hlua_consistency *c)
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002410{
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002411 c->mode = stream->be->mode;
2412 switch (c->mode) {
2413 case PR_MODE_HTTP:
2414 c->data.http.dir = opt & SMP_OPT_DIR;
2415 if (c->data.http.dir == SMP_OPT_DIR_REQ)
2416 c->data.http.state = stream->txn->req.msg_state;
2417 else
2418 c->data.http.state = stream->txn->rsp.msg_state;
2419 break;
2420 default:
2421 break;
2422 }
2423}
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002424
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002425/* This function is called after the Lua execution. it
2426 * returns true if the parser state is consistent, otherwise,
2427 * it return false.
2428 *
2429 * In HTTP mode, the parser state must be in the same state
2430 * or greater when we exit the function. Even if we do a
2431 * control yield. This prevent to break the HTTP message
2432 * from the Lua code.
2433 */
2434static inline int consistency_check(struct stream *stream, int opt, struct hlua_consistency *c)
2435{
2436 if (c->mode != stream->be->mode)
2437 return 0;
2438
2439 switch (c->mode) {
2440 case PR_MODE_HTTP:
2441 if (c->data.http.dir != (opt & SMP_OPT_DIR))
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002442 return 0;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01002443 if (c->data.http.dir == SMP_OPT_DIR_REQ)
2444 return stream->txn->req.msg_state >= c->data.http.state;
2445 else
2446 return stream->txn->rsp.msg_state >= c->data.http.state;
2447 default:
2448 return 1;
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002449 }
2450 return 1;
2451}
2452
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002453/* Returns the struct hlua_channel join to the class channel in the
2454 * stack entry "ud" or throws an argument error.
2455 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002456__LJMP static struct channel *hlua_checkchannel(lua_State *L, int ud)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002457{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002458 return MAY_LJMP(hlua_checkudata(L, ud, class_channel_ref));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002459}
2460
Willy Tarreau47860ed2015-03-10 14:07:50 +01002461/* Pushes the channel onto the top of the stack. If the stask does not have a
2462 * free slots, the function fails and returns 0;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002463 */
Willy Tarreau2a71af42015-03-10 13:51:50 +01002464static int hlua_channel_new(lua_State *L, struct channel *channel)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002465{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002466 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002467 if (!lua_checkstack(L, 3))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002468 return 0;
2469
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002470 lua_newtable(L);
Willy Tarreau47860ed2015-03-10 14:07:50 +01002471 lua_pushlightuserdata(L, channel);
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01002472 lua_rawseti(L, -2, 0);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002473
2474 /* Pop a class sesison metatable and affect it to the userdata. */
2475 lua_rawgeti(L, LUA_REGISTRYINDEX, class_channel_ref);
2476 lua_setmetatable(L, -2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002477 return 1;
2478}
2479
2480/* Duplicate all the data present in the input channel and put it
2481 * in a string LUA variables. Returns -1 and push a nil value in
2482 * the stack if the channel is closed and all the data are consumed,
2483 * returns 0 if no data are available, otherwise it returns the length
2484 * of the builded string.
2485 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002486static inline int _hlua_channel_dup(struct channel *chn, lua_State *L)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002487{
2488 char *blk1;
2489 char *blk2;
2490 int len1;
2491 int len2;
2492 int ret;
2493 luaL_Buffer b;
2494
Willy Tarreau47860ed2015-03-10 14:07:50 +01002495 ret = bi_getblk_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002496 if (unlikely(ret == 0))
2497 return 0;
2498
2499 if (unlikely(ret < 0)) {
2500 lua_pushnil(L);
2501 return -1;
2502 }
2503
2504 luaL_buffinit(L, &b);
2505 luaL_addlstring(&b, blk1, len1);
2506 if (unlikely(ret == 2))
2507 luaL_addlstring(&b, blk2, len2);
2508 luaL_pushresult(&b);
2509
2510 if (unlikely(ret == 2))
2511 return len1 + len2;
2512 return len1;
2513}
2514
2515/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2516 * a yield. This function keep the data in the buffer.
2517 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002518__LJMP static int hlua_channel_dup_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002519{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002520 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002521
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002522 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2523
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002524 if (_hlua_channel_dup(chn, L) == 0)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002525 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_dup_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002526 return 1;
2527}
2528
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002529/* Check arguments for the function "hlua_channel_dup_yield". */
2530__LJMP static int hlua_channel_dup(lua_State *L)
2531{
2532 MAY_LJMP(check_args(L, 1, "dup"));
2533 MAY_LJMP(hlua_checkchannel(L, 1));
2534 return MAY_LJMP(hlua_channel_dup_yield(L, 0, 0));
2535}
2536
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002537/* "_hlua_channel_dup" wrapper. If no data are available, it returns
2538 * a yield. This function consumes the data in the buffer. It returns
2539 * a string containing the data or a nil pointer if no data are available
2540 * and the channel is closed.
2541 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002542__LJMP static int hlua_channel_get_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002543{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002544 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002545 int ret;
2546
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002547 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002548
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002549 ret = _hlua_channel_dup(chn, L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002550 if (unlikely(ret == 0))
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002551 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_get_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002552
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002553 if (unlikely(ret == -1))
2554 return 1;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002555
Willy Tarreau47860ed2015-03-10 14:07:50 +01002556 chn->buf->i -= ret;
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002557 hlua_resynchonize_proto(chn_strm(chn), !!(chn->flags & CF_ISRESP));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002558 return 1;
2559}
2560
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002561/* Check arguments for the fucntion "hlua_channel_get_yield". */
2562__LJMP static int hlua_channel_get(lua_State *L)
2563{
2564 MAY_LJMP(check_args(L, 1, "get"));
2565 MAY_LJMP(hlua_checkchannel(L, 1));
2566 return MAY_LJMP(hlua_channel_get_yield(L, 0, 0));
2567}
2568
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002569/* This functions consumes and returns one line. If the channel is closed,
2570 * and the last data does not contains a final '\n', the data are returned
2571 * without the final '\n'. When no more data are avalaible, it returns nil
2572 * value.
2573 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002574__LJMP static int hlua_channel_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002575{
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002576 char *blk1;
2577 char *blk2;
2578 int len1;
2579 int len2;
2580 int len;
Willy Tarreau47860ed2015-03-10 14:07:50 +01002581 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002582 int ret;
2583 luaL_Buffer b;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002584
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002585 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2586
Willy Tarreau47860ed2015-03-10 14:07:50 +01002587 ret = bi_getline_nc(chn, &blk1, &len1, &blk2, &len2);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002588 if (ret == 0)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002589 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_getline_yield, TICK_ETERNITY, 0));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002590
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002591 if (ret == -1) {
2592 lua_pushnil(L);
2593 return 1;
2594 }
2595
2596 luaL_buffinit(L, &b);
2597 luaL_addlstring(&b, blk1, len1);
2598 len = len1;
2599 if (unlikely(ret == 2)) {
2600 luaL_addlstring(&b, blk2, len2);
2601 len += len2;
2602 }
2603 luaL_pushresult(&b);
Willy Tarreau47860ed2015-03-10 14:07:50 +01002604 buffer_replace2(chn->buf, chn->buf->p, chn->buf->p + len, NULL, 0);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002605 hlua_resynchonize_proto(chn_strm(chn), !!(chn->flags & CF_ISRESP));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002606 return 1;
2607}
2608
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002609/* Check arguments for the fucntion "hlua_channel_getline_yield". */
2610__LJMP static int hlua_channel_getline(lua_State *L)
2611{
2612 MAY_LJMP(check_args(L, 1, "getline"));
2613 MAY_LJMP(hlua_checkchannel(L, 1));
2614 return MAY_LJMP(hlua_channel_getline_yield(L, 0, 0));
2615}
2616
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002617/* This function takes a string as input, and append it at the
2618 * input side of channel. If the data is too big, but a space
2619 * is probably available after sending some data, the function
2620 * yield. If the data is bigger than the buffer, or if the
2621 * channel is closed, it returns -1. otherwise, it returns the
2622 * amount of data writed.
2623 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002624__LJMP static int hlua_channel_append_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002625{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002626 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002627 size_t len;
2628 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
2629 int l = MAY_LJMP(luaL_checkinteger(L, 3));
2630 int ret;
2631 int max;
2632
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002633 /* Check if the buffer is avalaible because HAProxy doesn't allocate
2634 * the request buffer if its not required.
2635 */
2636 if (chn->buf->size == 0) {
2637 si_applet_cant_put(chn_prod(chn));
2638 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
2639 }
2640
Willy Tarreau47860ed2015-03-10 14:07:50 +01002641 max = channel_recv_limit(chn) - buffer_len(chn->buf);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002642 if (max > len - l)
2643 max = len - l;
2644
Willy Tarreau47860ed2015-03-10 14:07:50 +01002645 ret = bi_putblk(chn, str + l, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002646 if (ret == -2 || ret == -3) {
2647 lua_pushinteger(L, -1);
2648 return 1;
2649 }
Willy Tarreaubc18da12015-03-13 14:00:47 +01002650 if (ret == -1) {
2651 chn->flags |= CF_WAKE_WRITE;
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002652 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Willy Tarreaubc18da12015-03-13 14:00:47 +01002653 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002654 l += ret;
2655 lua_pop(L, 1);
2656 lua_pushinteger(L, l);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02002657 hlua_resynchonize_proto(chn_strm(chn), !!(chn->flags & CF_ISRESP));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002658
Willy Tarreau47860ed2015-03-10 14:07:50 +01002659 max = channel_recv_limit(chn) - buffer_len(chn->buf);
2660 if (max == 0 && chn->buf->o == 0) {
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002661 /* There are no space avalaible, and the output buffer is empty.
2662 * in this case, we cannot add more data, so we cannot yield,
2663 * we return the amount of copyied data.
2664 */
2665 return 1;
2666 }
2667 if (l < len)
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002668 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002669 return 1;
2670}
2671
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002672/* just a wrapper of "hlua_channel_append_yield". It returns the length
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002673 * of the writed string, or -1 if the channel is closed or if the
2674 * buffer size is too little for the data.
2675 */
2676__LJMP static int hlua_channel_append(lua_State *L)
2677{
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002678 size_t len;
2679
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002680 MAY_LJMP(check_args(L, 2, "append"));
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002681 MAY_LJMP(hlua_checkchannel(L, 1));
2682 MAY_LJMP(luaL_checklstring(L, 2, &len));
2683 MAY_LJMP(luaL_checkinteger(L, 3));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002684 lua_pushinteger(L, 0);
2685
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002686 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002687}
2688
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002689/* just a wrapper of "hlua_channel_append_yield". This wrapper starts
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002690 * his process by cleaning the buffer. The result is a replacement
2691 * of the current data. It returns the length of the writed string,
2692 * or -1 if the channel is closed or if the buffer size is too
2693 * little for the data.
2694 */
2695__LJMP static int hlua_channel_set(lua_State *L)
2696{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002697 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002698
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002699 MAY_LJMP(check_args(L, 2, "set"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002700 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002701 lua_pushinteger(L, 0);
2702
Willy Tarreau47860ed2015-03-10 14:07:50 +01002703 chn->buf->i = 0;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002704
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002705 return MAY_LJMP(hlua_channel_append_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002706}
2707
2708/* Append data in the output side of the buffer. This data is immediatly
2709 * sent. The fcuntion returns the ammount of data writed. If the buffer
2710 * cannot contains the data, the function yield. The function returns -1
2711 * if the channel is closed.
2712 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002713__LJMP static int hlua_channel_send_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002714{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002715 struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002716 size_t len;
2717 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
2718 int l = MAY_LJMP(luaL_checkinteger(L, 3));
2719 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002720 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002721
Willy Tarreau47860ed2015-03-10 14:07:50 +01002722 if (unlikely(channel_output_closed(chn))) {
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002723 lua_pushinteger(L, -1);
2724 return 1;
2725 }
2726
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01002727 /* Check if the buffer is avalaible because HAProxy doesn't allocate
2728 * the request buffer if its not required.
2729 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002730 if (chn->buf->size == 0) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002731 si_applet_cant_put(chn_prod(chn));
2732 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIER3e3a6082015-03-05 17:06:12 +01002733 }
2734
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002735 /* the writed data will be immediatly sent, so we can check
2736 * the avalaible space without taking in account the reserve.
2737 * The reserve is guaranted for the processing of incoming
2738 * data, because the buffer will be flushed.
2739 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002740 max = chn->buf->size - buffer_len(chn->buf);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002741
2742 /* If there are no space avalaible, and the output buffer is empty.
2743 * in this case, we cannot add more data, so we cannot yield,
2744 * we return the amount of copyied data.
2745 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002746 if (max == 0 && chn->buf->o == 0)
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002747 return 1;
2748
2749 /* Adjust the real required length. */
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002750 if (max > len - l)
2751 max = len - l;
2752
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002753 /* The buffer avalaible size may be not contiguous. This test
2754 * detects a non contiguous buffer and realign it.
2755 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002756 if (bi_space_for_replace(chn->buf) < max)
2757 buffer_slow_realign(chn->buf);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002758
2759 /* Copy input data in the buffer. */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002760 max = buffer_replace2(chn->buf, chn->buf->p, chn->buf->p, str + l, max);
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002761
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002762 /* buffer replace considers that the input part is filled.
2763 * so, I must forward these new data in the output part.
2764 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002765 b_adv(chn->buf, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002766
2767 l += max;
2768 lua_pop(L, 1);
2769 lua_pushinteger(L, l);
2770
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002771 /* If there are no space avalaible, and the output buffer is empty.
2772 * in this case, we cannot add more data, so we cannot yield,
2773 * we return the amount of copyied data.
2774 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002775 max = chn->buf->size - buffer_len(chn->buf);
2776 if (max == 0 && chn->buf->o == 0)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002777 return 1;
Thierry FOURNIERdeb5d732015-03-06 01:07:45 +01002778
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002779 if (l < len) {
2780 /* If we are waiting for space in the response buffer, we
2781 * must set the flag WAKERESWR. This flag required the task
2782 * wake up if any activity is detected on the response buffer.
2783 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002784 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002785 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01002786 else
2787 HLUA_SET_WAKEREQWR(hlua);
2788 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0));
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002789 }
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002790
2791 return 1;
2792}
2793
2794/* Just a wraper of "_hlua_channel_send". This wrapper permits
2795 * yield the LUA process, and resume it without checking the
2796 * input arguments.
2797 */
2798__LJMP static int hlua_channel_send(lua_State *L)
2799{
2800 MAY_LJMP(check_args(L, 2, "send"));
2801 lua_pushinteger(L, 0);
2802
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002803 return MAY_LJMP(hlua_channel_send_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002804}
2805
2806/* This function forward and amount of butes. The data pass from
2807 * the input side of the buffer to the output side, and can be
2808 * forwarded. This function never fails.
2809 *
2810 * The Lua function takes an amount of bytes to be forwarded in
2811 * imput. It returns the number of bytes forwarded.
2812 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002813__LJMP static int hlua_channel_forward_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002814{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002815 struct channel *chn;
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002816 int len;
2817 int l;
2818 int max;
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002819 struct hlua *hlua = hlua_gethlua(L);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002820
2821 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2822 len = MAY_LJMP(luaL_checkinteger(L, 2));
2823 l = MAY_LJMP(luaL_checkinteger(L, -1));
2824
2825 max = len - l;
Willy Tarreau47860ed2015-03-10 14:07:50 +01002826 if (max > chn->buf->i)
2827 max = chn->buf->i;
2828 channel_forward(chn, max);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002829 l += max;
2830
2831 lua_pop(L, 1);
2832 lua_pushinteger(L, l);
2833
2834 /* Check if it miss bytes to forward. */
2835 if (l < len) {
2836 /* The the input channel or the output channel are closed, we
2837 * must return the amount of data forwarded.
2838 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002839 if (channel_input_closed(chn) || channel_output_closed(chn))
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002840 return 1;
2841
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002842 /* If we are waiting for space data in the response buffer, we
2843 * must set the flag WAKERESWR. This flag required the task
2844 * wake up if any activity is detected on the response buffer.
2845 */
Willy Tarreau47860ed2015-03-10 14:07:50 +01002846 if (chn->flags & CF_ISRESP)
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002847 HLUA_SET_WAKERESWR(hlua);
Thierry FOURNIER53e08ec2015-03-06 00:35:53 +01002848 else
2849 HLUA_SET_WAKEREQWR(hlua);
Thierry FOURNIERef6a2112015-03-05 17:45:34 +01002850
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002851 /* Otherwise, we can yield waiting for new data in the inpout side. */
Thierry FOURNIER4abd3ae2015-03-03 17:29:06 +01002852 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_forward_yield, TICK_ETERNITY, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002853 }
2854
2855 return 1;
2856}
2857
2858/* Just check the input and prepare the stack for the previous
2859 * function "hlua_channel_forward_yield"
2860 */
2861__LJMP static int hlua_channel_forward(lua_State *L)
2862{
2863 MAY_LJMP(check_args(L, 2, "forward"));
2864 MAY_LJMP(hlua_checkchannel(L, 1));
2865 MAY_LJMP(luaL_checkinteger(L, 2));
2866
2867 lua_pushinteger(L, 0);
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01002868 return MAY_LJMP(hlua_channel_forward_yield(L, 0, 0));
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002869}
2870
2871/* Just returns the number of bytes available in the input
2872 * side of the buffer. This function never fails.
2873 */
2874__LJMP static int hlua_channel_get_in_len(lua_State *L)
2875{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002876 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002877
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002878 MAY_LJMP(check_args(L, 1, "get_in_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002879 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Willy Tarreau47860ed2015-03-10 14:07:50 +01002880 lua_pushinteger(L, chn->buf->i);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002881 return 1;
2882}
2883
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01002884/* Returns true if the channel is full. */
2885__LJMP static int hlua_channel_is_full(lua_State *L)
2886{
2887 struct channel *chn;
2888 int rem;
2889
2890 MAY_LJMP(check_args(L, 1, "is_full"));
2891 chn = MAY_LJMP(hlua_checkchannel(L, 1));
2892
2893 rem = chn->buf->size;
2894 rem -= chn->buf->o; /* Output size */
2895 rem -= chn->buf->i; /* Input size */
2896 rem -= global.tune.maxrewrite; /* Rewrite reserved size */
2897
2898 lua_pushboolean(L, rem <= 0);
2899 return 1;
2900}
2901
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002902/* Just returns the number of bytes available in the output
2903 * side of the buffer. This function never fails.
2904 */
2905__LJMP static int hlua_channel_get_out_len(lua_State *L)
2906{
Willy Tarreau47860ed2015-03-10 14:07:50 +01002907 struct channel *chn;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002908
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002909 MAY_LJMP(check_args(L, 1, "get_out_len"));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01002910 chn = MAY_LJMP(hlua_checkchannel(L, 1));
Willy Tarreau47860ed2015-03-10 14:07:50 +01002911 lua_pushinteger(L, chn->buf->o);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01002912 return 1;
2913}
2914
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002915/*
2916 *
2917 *
2918 * Class Fetches
2919 *
2920 *
2921 */
2922
2923/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02002924 * a class stream, otherwise it throws an error.
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002925 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01002926__LJMP static struct hlua_smp *hlua_checkfetches(lua_State *L, int ud)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002927{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002928 return MAY_LJMP(hlua_checkudata(L, ud, class_fetches_ref));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002929}
2930
2931/* This function creates and push in the stack a fetch object according
2932 * with a current TXN.
2933 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01002934static int hlua_fetches_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002935{
Willy Tarreau7073c472015-04-06 11:15:40 +02002936 struct hlua_smp *hsmp;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002937
2938 /* Check stack size. */
2939 if (!lua_checkstack(L, 3))
2940 return 0;
2941
2942 /* Create the object: obj[0] = userdata.
2943 * Note that the base of the Fetches object is the
2944 * transaction object.
2945 */
2946 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02002947 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002948 lua_rawseti(L, -2, 0);
2949
Willy Tarreau7073c472015-04-06 11:15:40 +02002950 hsmp->s = txn->s;
2951 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01002952 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01002953 hsmp->flags = flags;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002954
2955 /* Pop a class sesison metatable and affect it to the userdata. */
2956 lua_rawgeti(L, LUA_REGISTRYINDEX, class_fetches_ref);
2957 lua_setmetatable(L, -2);
2958
2959 return 1;
2960}
2961
2962/* This function is an LUA binding. It is called with each sample-fetch.
2963 * It uses closure argument to store the associated sample-fetch. It
2964 * returns only one argument or throws an error. An error is thrown
2965 * only if an error is encountered during the argument parsing. If
2966 * the "sample-fetch" function fails, nil is returned.
2967 */
2968__LJMP static int hlua_run_sample_fetch(lua_State *L)
2969{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02002970 struct hlua_smp *hsmp;
Willy Tarreau2ec22742015-03-10 14:27:20 +01002971 struct sample_fetch *f;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002972 struct arg args[ARGM_NBARGS + 1];
2973 int i;
2974 struct sample smp;
2975
2976 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02002977 f = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002978
2979 /* Get traditionnal arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02002980 hsmp = MAY_LJMP(hlua_checkfetches(L, 1));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002981
Thierry FOURNIERca988662015-12-20 18:43:03 +01002982 /* Check execution authorization. */
2983 if (f->use & SMP_USE_HTTP_ANY &&
2984 !(hsmp->flags & HLUA_F_MAY_USE_HTTP)) {
2985 lua_pushfstring(L, "the sample-fetch '%s' needs an HTTP parser which "
2986 "is not available in Lua services", f->kw);
2987 WILL_LJMP(lua_error(L));
2988 }
2989
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002990 /* Get extra arguments. */
2991 for (i = 0; i < lua_gettop(L) - 1; i++) {
2992 if (i >= ARGM_NBARGS)
2993 break;
2994 hlua_lua2arg(L, i + 2, &args[i]);
2995 }
2996 args[i].type = ARGT_STOP;
David Carlierabdb00f2016-04-27 16:14:50 +01002997 args[i].data.str.str = NULL;
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01002998
2999 /* Check arguments. */
Willy Tarreaub2ccb562015-04-06 11:11:15 +02003000 MAY_LJMP(hlua_lua2arg_check(L, 2, args, f->arg_mask, hsmp->p));
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003001
3002 /* Run the special args checker. */
Willy Tarreau2ec22742015-03-10 14:27:20 +01003003 if (f->val_args && !f->val_args(args, NULL)) {
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003004 lua_pushfstring(L, "error in arguments");
3005 WILL_LJMP(lua_error(L));
3006 }
3007
3008 /* Initialise the sample. */
3009 memset(&smp, 0, sizeof(smp));
3010
3011 /* Run the sample fetch process. */
Willy Tarreau1777ea62016-03-10 16:15:46 +01003012 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
Thierry FOURNIER0786d052015-05-11 15:42:45 +02003013 if (!f->process(args, &smp, f->kw, f->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003014 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003015 lua_pushstring(L, "");
3016 else
3017 lua_pushnil(L);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003018 return 1;
3019 }
3020
3021 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003022 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003023 hlua_smp2lua_str(L, &smp);
3024 else
3025 hlua_smp2lua(L, &smp);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01003026 return 1;
3027}
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01003028
3029/*
3030 *
3031 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003032 * Class Converters
3033 *
3034 *
3035 */
3036
3037/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003038 * a class stream, otherwise it throws an error.
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003039 */
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003040__LJMP static struct hlua_smp *hlua_checkconverters(lua_State *L, int ud)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003041{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003042 return MAY_LJMP(hlua_checkudata(L, ud, class_converters_ref));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003043}
3044
3045/* This function creates and push in the stack a Converters object
3046 * according with a current TXN.
3047 */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003048static int hlua_converters_new(lua_State *L, struct hlua_txn *txn, unsigned int flags)
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003049{
Willy Tarreau7073c472015-04-06 11:15:40 +02003050 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003051
3052 /* Check stack size. */
3053 if (!lua_checkstack(L, 3))
3054 return 0;
3055
3056 /* Create the object: obj[0] = userdata.
3057 * Note that the base of the Converters object is the
3058 * same than the TXN object.
3059 */
3060 lua_newtable(L);
Willy Tarreau7073c472015-04-06 11:15:40 +02003061 hsmp = lua_newuserdata(L, sizeof(*hsmp));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003062 lua_rawseti(L, -2, 0);
3063
Willy Tarreau7073c472015-04-06 11:15:40 +02003064 hsmp->s = txn->s;
3065 hsmp->p = txn->p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01003066 hsmp->dir = txn->dir;
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003067 hsmp->flags = flags;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003068
Willy Tarreau87b09662015-04-03 00:22:06 +02003069 /* Pop a class stream metatable and affect it to the table. */
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003070 lua_rawgeti(L, LUA_REGISTRYINDEX, class_converters_ref);
3071 lua_setmetatable(L, -2);
3072
3073 return 1;
3074}
3075
3076/* This function is an LUA binding. It is called with each converter.
3077 * It uses closure argument to store the associated converter. It
3078 * returns only one argument or throws an error. An error is thrown
3079 * only if an error is encountered during the argument parsing. If
3080 * the converter function function fails, nil is returned.
3081 */
3082__LJMP static int hlua_run_sample_conv(lua_State *L)
3083{
Willy Tarreauda5f1082015-04-06 11:17:13 +02003084 struct hlua_smp *hsmp;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003085 struct sample_conv *conv;
3086 struct arg args[ARGM_NBARGS + 1];
3087 int i;
3088 struct sample smp;
3089
3090 /* Get closure arguments. */
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003091 conv = lua_touserdata(L, lua_upvalueindex(1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003092
3093 /* Get traditionnal arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003094 hsmp = MAY_LJMP(hlua_checkconverters(L, 1));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003095
3096 /* Get extra arguments. */
3097 for (i = 0; i < lua_gettop(L) - 2; i++) {
3098 if (i >= ARGM_NBARGS)
3099 break;
3100 hlua_lua2arg(L, i + 3, &args[i]);
3101 }
3102 args[i].type = ARGT_STOP;
David Carlierabdb00f2016-04-27 16:14:50 +01003103 args[i].data.str.str = NULL;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003104
3105 /* Check arguments. */
Willy Tarreauda5f1082015-04-06 11:17:13 +02003106 MAY_LJMP(hlua_lua2arg_check(L, 3, args, conv->arg_mask, hsmp->p));
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003107
3108 /* Run the special args checker. */
3109 if (conv->val_args && !conv->val_args(args, conv, "", 0, NULL)) {
3110 hlua_pusherror(L, "error in arguments");
3111 WILL_LJMP(lua_error(L));
3112 }
3113
3114 /* Initialise the sample. */
3115 if (!hlua_lua2smp(L, 2, &smp)) {
3116 hlua_pusherror(L, "error in the input argument");
3117 WILL_LJMP(lua_error(L));
3118 }
3119
Willy Tarreau1777ea62016-03-10 16:15:46 +01003120 smp_set_owner(&smp, hsmp->p, hsmp->s->sess, hsmp->s, hsmp->dir & SMP_OPT_DIR);
3121
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003122 /* Apply expected cast. */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003123 if (!sample_casts[smp.data.type][conv->in_type]) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003124 hlua_pusherror(L, "invalid input argument: cannot cast '%s' to '%s'",
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003125 smp_to_type[smp.data.type], smp_to_type[conv->in_type]);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003126 WILL_LJMP(lua_error(L));
3127 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003128 if (sample_casts[smp.data.type][conv->in_type] != c_none &&
3129 !sample_casts[smp.data.type][conv->in_type](&smp)) {
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003130 hlua_pusherror(L, "error during the input argument casting");
3131 WILL_LJMP(lua_error(L));
3132 }
3133
3134 /* Run the sample conversion process. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02003135 if (!conv->process(args, &smp, conv->private)) {
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003136 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003137 lua_pushstring(L, "");
3138 else
Willy Tarreaua678b432015-08-28 10:14:59 +02003139 lua_pushnil(L);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003140 return 1;
3141 }
3142
3143 /* Convert the returned sample in lua value. */
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003144 if (hsmp->flags & HLUA_F_AS_STRING)
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01003145 hlua_smp2lua_str(L, &smp);
3146 else
3147 hlua_smp2lua(L, &smp);
Willy Tarreaua678b432015-08-28 10:14:59 +02003148 return 1;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003149}
3150
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003151/*
3152 *
3153 *
3154 * Class AppletTCP
3155 *
3156 *
3157 */
3158
3159/* Returns a struct hlua_txn if the stack entry "ud" is
3160 * a class stream, otherwise it throws an error.
3161 */
3162__LJMP static struct hlua_appctx *hlua_checkapplet_tcp(lua_State *L, int ud)
3163{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003164 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_tcp_ref));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003165}
3166
3167/* This function creates and push in the stack an Applet object
3168 * according with a current TXN.
3169 */
3170static int hlua_applet_tcp_new(lua_State *L, struct appctx *ctx)
3171{
3172 struct hlua_appctx *appctx;
3173 struct stream_interface *si = ctx->owner;
3174 struct stream *s = si_strm(si);
3175 struct proxy *p = s->be;
3176
3177 /* Check stack size. */
3178 if (!lua_checkstack(L, 3))
3179 return 0;
3180
3181 /* Create the object: obj[0] = userdata.
3182 * Note that the base of the Converters object is the
3183 * same than the TXN object.
3184 */
3185 lua_newtable(L);
3186 appctx = lua_newuserdata(L, sizeof(*appctx));
3187 lua_rawseti(L, -2, 0);
3188 appctx->appctx = ctx;
3189 appctx->htxn.s = s;
3190 appctx->htxn.p = p;
3191
3192 /* Create the "f" field that contains a list of fetches. */
3193 lua_pushstring(L, "f");
3194 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3195 return 0;
3196 lua_settable(L, -3);
3197
3198 /* Create the "sf" field that contains a list of stringsafe fetches. */
3199 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003200 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003201 return 0;
3202 lua_settable(L, -3);
3203
3204 /* Create the "c" field that contains a list of converters. */
3205 lua_pushstring(L, "c");
3206 if (!hlua_converters_new(L, &appctx->htxn, 0))
3207 return 0;
3208 lua_settable(L, -3);
3209
3210 /* Create the "sc" field that contains a list of stringsafe converters. */
3211 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003212 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003213 return 0;
3214 lua_settable(L, -3);
3215
3216 /* Pop a class stream metatable and affect it to the table. */
3217 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_tcp_ref);
3218 lua_setmetatable(L, -2);
3219
3220 return 1;
3221}
3222
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003223__LJMP static int hlua_applet_tcp_set_var(lua_State *L)
3224{
3225 struct hlua_appctx *appctx;
3226 struct stream *s;
3227 const char *name;
3228 size_t len;
3229 struct sample smp;
3230
3231 MAY_LJMP(check_args(L, 3, "set_var"));
3232
3233 /* It is useles to retrieve the stream, but this function
3234 * runs only in a stream context.
3235 */
3236 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3237 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3238 s = appctx->htxn.s;
3239
3240 /* Converts the third argument in a sample. */
3241 hlua_lua2smp(L, 3, &smp);
3242
3243 /* Store the sample in a variable. */
3244 smp_set_owner(&smp, s->be, s->sess, s, 0);
3245 vars_set_by_name(name, len, &smp);
3246 return 0;
3247}
3248
3249__LJMP static int hlua_applet_tcp_unset_var(lua_State *L)
3250{
3251 struct hlua_appctx *appctx;
3252 struct stream *s;
3253 const char *name;
3254 size_t len;
3255 struct sample smp;
3256
3257 MAY_LJMP(check_args(L, 2, "unset_var"));
3258
3259 /* It is useles to retrieve the stream, but this function
3260 * runs only in a stream context.
3261 */
3262 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3263 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3264 s = appctx->htxn.s;
3265
3266 /* Unset the variable. */
3267 smp_set_owner(&smp, s->be, s->sess, s, 0);
3268 vars_unset_by_name(name, len, &smp);
3269 return 0;
3270}
3271
3272__LJMP static int hlua_applet_tcp_get_var(lua_State *L)
3273{
3274 struct hlua_appctx *appctx;
3275 struct stream *s;
3276 const char *name;
3277 size_t len;
3278 struct sample smp;
3279
3280 MAY_LJMP(check_args(L, 2, "get_var"));
3281
3282 /* It is useles to retrieve the stream, but this function
3283 * runs only in a stream context.
3284 */
3285 appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3286 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3287 s = appctx->htxn.s;
3288
3289 smp_set_owner(&smp, s->be, s->sess, s, 0);
3290 if (!vars_get_by_name(name, len, &smp)) {
3291 lua_pushnil(L);
3292 return 1;
3293 }
3294
3295 return hlua_smp2lua(L, &smp);
3296}
3297
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003298__LJMP static int hlua_applet_tcp_set_priv(lua_State *L)
3299{
3300 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3301 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003302 struct hlua *hlua;
3303
3304 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003305 if (!s->hlua)
3306 return 0;
3307 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003308
3309 MAY_LJMP(check_args(L, 2, "set_priv"));
3310
3311 /* Remove previous value. */
3312 if (hlua->Mref != -1)
3313 luaL_unref(L, hlua->Mref, LUA_REGISTRYINDEX);
3314
3315 /* Get and store new value. */
3316 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
3317 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
3318
3319 return 0;
3320}
3321
3322__LJMP static int hlua_applet_tcp_get_priv(lua_State *L)
3323{
3324 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3325 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003326 struct hlua *hlua;
3327
3328 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003329 if (!s->hlua) {
3330 lua_pushnil(L);
3331 return 1;
3332 }
3333 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003334
3335 /* Push configuration index in the stack. */
3336 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
3337
3338 return 1;
3339}
3340
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02003341/* If expected data not yet available, it returns a yield. This function
3342 * consumes the data in the buffer. It returns a string containing the
3343 * data. This string can be empty.
3344 */
3345__LJMP static int hlua_applet_tcp_getline_yield(lua_State *L, int status, lua_KContext ctx)
3346{
3347 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3348 struct stream_interface *si = appctx->appctx->owner;
3349 int ret;
3350 char *blk1;
3351 int len1;
3352 char *blk2;
3353 int len2;
3354
3355 /* Read the maximum amount of data avalaible. */
3356 ret = bo_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
3357
3358 /* Data not yet avalaible. return yield. */
3359 if (ret == 0) {
3360 si_applet_cant_get(si);
3361 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_getline_yield, TICK_ETERNITY, 0));
3362 }
3363
3364 /* End of data: commit the total strings and return. */
3365 if (ret < 0) {
3366 luaL_pushresult(&appctx->b);
3367 return 1;
3368 }
3369
3370 /* Ensure that the block 2 length is usable. */
3371 if (ret == 1)
3372 len2 = 0;
3373
3374 /* dont check the max length read and dont check. */
3375 luaL_addlstring(&appctx->b, blk1, len1);
3376 luaL_addlstring(&appctx->b, blk2, len2);
3377
3378 /* Consume input channel output buffer data. */
3379 bo_skip(si_oc(si), len1 + len2);
3380 luaL_pushresult(&appctx->b);
3381 return 1;
3382}
3383
3384/* Check arguments for the fucntion "hlua_channel_get_yield". */
3385__LJMP static int hlua_applet_tcp_getline(lua_State *L)
3386{
3387 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3388
3389 /* Initialise the string catenation. */
3390 luaL_buffinit(L, &appctx->b);
3391
3392 return MAY_LJMP(hlua_applet_tcp_getline_yield(L, 0, 0));
3393}
3394
3395/* If expected data not yet available, it returns a yield. This function
3396 * consumes the data in the buffer. It returns a string containing the
3397 * data. This string can be empty.
3398 */
3399__LJMP static int hlua_applet_tcp_recv_yield(lua_State *L, int status, lua_KContext ctx)
3400{
3401 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3402 struct stream_interface *si = appctx->appctx->owner;
3403 int len = MAY_LJMP(luaL_checkinteger(L, 2));
3404 int ret;
3405 char *blk1;
3406 int len1;
3407 char *blk2;
3408 int len2;
3409
3410 /* Read the maximum amount of data avalaible. */
3411 ret = bo_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
3412
3413 /* Data not yet avalaible. return yield. */
3414 if (ret == 0) {
3415 si_applet_cant_get(si);
3416 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
3417 }
3418
3419 /* End of data: commit the total strings and return. */
3420 if (ret < 0) {
3421 luaL_pushresult(&appctx->b);
3422 return 1;
3423 }
3424
3425 /* Ensure that the block 2 length is usable. */
3426 if (ret == 1)
3427 len2 = 0;
3428
3429 if (len == -1) {
3430
3431 /* If len == -1, catenate all the data avalaile and
3432 * yield because we want to get all the data until
3433 * the end of data stream.
3434 */
3435 luaL_addlstring(&appctx->b, blk1, len1);
3436 luaL_addlstring(&appctx->b, blk2, len2);
3437 bo_skip(si_oc(si), len1 + len2);
3438 si_applet_cant_get(si);
3439 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
3440
3441 } else {
3442
3443 /* Copy the fisrt block caping to the length required. */
3444 if (len1 > len)
3445 len1 = len;
3446 luaL_addlstring(&appctx->b, blk1, len1);
3447 len -= len1;
3448
3449 /* Copy the second block. */
3450 if (len2 > len)
3451 len2 = len;
3452 luaL_addlstring(&appctx->b, blk2, len2);
3453 len -= len2;
3454
3455 /* Consume input channel output buffer data. */
3456 bo_skip(si_oc(si), len1 + len2);
3457
3458 /* If we are no other data avalaible, yield waiting for new data. */
3459 if (len > 0) {
3460 lua_pushinteger(L, len);
3461 lua_replace(L, 2);
3462 si_applet_cant_get(si);
3463 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_recv_yield, TICK_ETERNITY, 0));
3464 }
3465
3466 /* return the result. */
3467 luaL_pushresult(&appctx->b);
3468 return 1;
3469 }
3470
3471 /* we never executes this */
3472 hlua_pusherror(L, "Lua: internal error");
3473 WILL_LJMP(lua_error(L));
3474 return 0;
3475}
3476
3477/* Check arguments for the fucntion "hlua_channel_get_yield". */
3478__LJMP static int hlua_applet_tcp_recv(lua_State *L)
3479{
3480 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3481 int len = -1;
3482
3483 if (lua_gettop(L) > 2)
3484 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
3485 if (lua_gettop(L) >= 2) {
3486 len = MAY_LJMP(luaL_checkinteger(L, 2));
3487 lua_pop(L, 1);
3488 }
3489
3490 /* Confirm or set the required length */
3491 lua_pushinteger(L, len);
3492
3493 /* Initialise the string catenation. */
3494 luaL_buffinit(L, &appctx->b);
3495
3496 return MAY_LJMP(hlua_applet_tcp_recv_yield(L, 0, 0));
3497}
3498
3499/* Append data in the output side of the buffer. This data is immediatly
3500 * sent. The fcuntion returns the ammount of data writed. If the buffer
3501 * cannot contains the data, the function yield. The function returns -1
3502 * if the channel is closed.
3503 */
3504__LJMP static int hlua_applet_tcp_send_yield(lua_State *L, int status, lua_KContext ctx)
3505{
3506 size_t len;
3507 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_tcp(L, 1));
3508 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
3509 int l = MAY_LJMP(luaL_checkinteger(L, 3));
3510 struct stream_interface *si = appctx->appctx->owner;
3511 struct channel *chn = si_ic(si);
3512 int max;
3513
3514 /* Get the max amount of data which can write as input in the channel. */
3515 max = channel_recv_max(chn);
3516 if (max > (len - l))
3517 max = len - l;
3518
3519 /* Copy data. */
3520 bi_putblk(chn, str + l, max);
3521
3522 /* update counters. */
3523 l += max;
3524 lua_pop(L, 1);
3525 lua_pushinteger(L, l);
3526
3527 /* If some data is not send, declares the situation to the
3528 * applet, and returns a yield.
3529 */
3530 if (l < len) {
3531 si_applet_cant_put(si);
3532 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_tcp_send_yield, TICK_ETERNITY, 0));
3533 }
3534
3535 return 1;
3536}
3537
3538/* Just a wraper of "hlua_applet_tcp_send_yield". This wrapper permits
3539 * yield the LUA process, and resume it without checking the
3540 * input arguments.
3541 */
3542__LJMP static int hlua_applet_tcp_send(lua_State *L)
3543{
3544 MAY_LJMP(check_args(L, 2, "send"));
3545 lua_pushinteger(L, 0);
3546
3547 return MAY_LJMP(hlua_applet_tcp_send_yield(L, 0, 0));
3548}
3549
Thierry FOURNIER594afe72015-03-10 23:58:30 +01003550/*
3551 *
3552 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003553 * Class AppletHTTP
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003554 *
3555 *
3556 */
3557
3558/* Returns a struct hlua_txn if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02003559 * a class stream, otherwise it throws an error.
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003560 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003561__LJMP static struct hlua_appctx *hlua_checkapplet_http(lua_State *L, int ud)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003562{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02003563 return MAY_LJMP(hlua_checkudata(L, ud, class_applet_http_ref));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003564}
3565
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003566/* This function creates and push in the stack an Applet object
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003567 * according with a current TXN.
3568 */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003569static int hlua_applet_http_new(lua_State *L, struct appctx *ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003570{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003571 struct hlua_appctx *appctx;
Thierry FOURNIER841475e2015-12-11 17:10:09 +01003572 struct hlua_txn htxn;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003573 struct stream_interface *si = ctx->owner;
3574 struct stream *s = si_strm(si);
3575 struct proxy *px = s->be;
3576 struct http_txn *txn = s->txn;
3577 const char *path;
3578 const char *end;
3579 const char *p;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003580
3581 /* Check stack size. */
3582 if (!lua_checkstack(L, 3))
3583 return 0;
3584
3585 /* Create the object: obj[0] = userdata.
3586 * Note that the base of the Converters object is the
3587 * same than the TXN object.
3588 */
3589 lua_newtable(L);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003590 appctx = lua_newuserdata(L, sizeof(*appctx));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003591 lua_rawseti(L, -2, 0);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003592 appctx->appctx = ctx;
3593 appctx->appctx->ctx.hlua_apphttp.status = 200; /* Default status code returned. */
Robin H. Johnson52f5db22017-01-01 13:10:52 -08003594 appctx->appctx->ctx.hlua_apphttp.reason = NULL; /* Use default reason based on status */
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003595 appctx->htxn.s = s;
3596 appctx->htxn.p = px;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003597
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003598 /* Create the "f" field that contains a list of fetches. */
3599 lua_pushstring(L, "f");
3600 if (!hlua_fetches_new(L, &appctx->htxn, 0))
3601 return 0;
3602 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003603
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003604 /* Create the "sf" field that contains a list of stringsafe fetches. */
3605 lua_pushstring(L, "sf");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003606 if (!hlua_fetches_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003607 return 0;
3608 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003609
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003610 /* Create the "c" field that contains a list of converters. */
3611 lua_pushstring(L, "c");
3612 if (!hlua_converters_new(L, &appctx->htxn, 0))
3613 return 0;
3614 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003615
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003616 /* Create the "sc" field that contains a list of stringsafe converters. */
3617 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01003618 if (!hlua_converters_new(L, &appctx->htxn, HLUA_F_AS_STRING))
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003619 return 0;
3620 lua_settable(L, -3);
Willy Tarreaueee5b512015-04-03 23:46:31 +02003621
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003622 /* Stores the request method. */
3623 lua_pushstring(L, "method");
3624 lua_pushlstring(L, txn->req.chn->buf->p, txn->req.sl.rq.m_l);
3625 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003626
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003627 /* Stores the http version. */
3628 lua_pushstring(L, "version");
3629 lua_pushlstring(L, txn->req.chn->buf->p + txn->req.sl.rq.v, txn->req.sl.rq.v_l);
3630 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003631
Thierry FOURNIER841475e2015-12-11 17:10:09 +01003632 /* creates an array of headers. hlua_http_get_headers() crates and push
3633 * the array on the top of the stack.
3634 */
3635 lua_pushstring(L, "headers");
3636 htxn.s = s;
3637 htxn.p = px;
3638 htxn.dir = SMP_OPT_DIR_REQ;
3639 if (!hlua_http_get_headers(L, &htxn, &htxn.s->txn->req))
3640 return 0;
3641 lua_settable(L, -3);
3642
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003643 /* Get path and qs */
3644 path = http_get_path(txn);
3645 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
3646 p = path;
3647 while (p < end && *p != '?')
3648 p++;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003649
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003650 /* Stores the request path. */
3651 lua_pushstring(L, "path");
3652 lua_pushlstring(L, path, p - path);
3653 lua_settable(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003654
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003655 /* Stores the query string. */
3656 lua_pushstring(L, "qs");
3657 if (*p == '?')
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003658 p++;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003659 lua_pushlstring(L, p, end - p);
3660 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01003661
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003662 /* Stores the request path. */
3663 lua_pushstring(L, "length");
3664 lua_pushinteger(L, txn->req.body_len);
3665 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01003666
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003667 /* Create an array of HTTP request headers. */
3668 lua_pushstring(L, "headers");
3669 MAY_LJMP(hlua_http_get_headers(L, &appctx->htxn, &appctx->htxn.s->txn->req));
3670 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01003671
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003672 /* Create an empty array of HTTP request headers. */
3673 lua_pushstring(L, "response");
3674 lua_newtable(L);
3675 lua_settable(L, -3);
Thierry FOURNIER04c57b32015-03-18 13:43:10 +01003676
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003677 /* Pop a class stream metatable and affect it to the table. */
3678 lua_rawgeti(L, LUA_REGISTRYINDEX, class_applet_http_ref);
3679 lua_setmetatable(L, -2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003680
3681 return 1;
3682}
3683
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01003684__LJMP static int hlua_applet_http_set_var(lua_State *L)
3685{
3686 struct hlua_appctx *appctx;
3687 struct stream *s;
3688 const char *name;
3689 size_t len;
3690 struct sample smp;
3691
3692 MAY_LJMP(check_args(L, 3, "set_var"));
3693
3694 /* It is useles to retrieve the stream, but this function
3695 * runs only in a stream context.
3696 */
3697 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3698 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3699 s = appctx->htxn.s;
3700
3701 /* Converts the third argument in a sample. */
3702 hlua_lua2smp(L, 3, &smp);
3703
3704 /* Store the sample in a variable. */
3705 smp_set_owner(&smp, s->be, s->sess, s, 0);
3706 vars_set_by_name(name, len, &smp);
3707 return 0;
3708}
3709
3710__LJMP static int hlua_applet_http_unset_var(lua_State *L)
3711{
3712 struct hlua_appctx *appctx;
3713 struct stream *s;
3714 const char *name;
3715 size_t len;
3716 struct sample smp;
3717
3718 MAY_LJMP(check_args(L, 2, "unset_var"));
3719
3720 /* It is useles to retrieve the stream, but this function
3721 * runs only in a stream context.
3722 */
3723 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3724 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3725 s = appctx->htxn.s;
3726
3727 /* Unset the variable. */
3728 smp_set_owner(&smp, s->be, s->sess, s, 0);
3729 vars_unset_by_name(name, len, &smp);
3730 return 0;
3731}
3732
3733__LJMP static int hlua_applet_http_get_var(lua_State *L)
3734{
3735 struct hlua_appctx *appctx;
3736 struct stream *s;
3737 const char *name;
3738 size_t len;
3739 struct sample smp;
3740
3741 MAY_LJMP(check_args(L, 2, "get_var"));
3742
3743 /* It is useles to retrieve the stream, but this function
3744 * runs only in a stream context.
3745 */
3746 appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3747 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
3748 s = appctx->htxn.s;
3749
3750 smp_set_owner(&smp, s->be, s->sess, s, 0);
3751 if (!vars_get_by_name(name, len, &smp)) {
3752 lua_pushnil(L);
3753 return 1;
3754 }
3755
3756 return hlua_smp2lua(L, &smp);
3757}
3758
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003759__LJMP static int hlua_applet_http_set_priv(lua_State *L)
3760{
3761 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3762 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003763 struct hlua *hlua;
3764
3765 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003766 if (!s->hlua)
3767 return 0;
3768 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003769
3770 MAY_LJMP(check_args(L, 2, "set_priv"));
3771
3772 /* Remove previous value. */
3773 if (hlua->Mref != -1)
3774 luaL_unref(L, hlua->Mref, LUA_REGISTRYINDEX);
3775
3776 /* Get and store new value. */
3777 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
3778 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
3779
3780 return 0;
3781}
3782
3783__LJMP static int hlua_applet_http_get_priv(lua_State *L)
3784{
3785 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3786 struct stream *s = appctx->htxn.s;
Thierry FOURNIER3b0a6d42016-12-16 08:48:32 +01003787 struct hlua *hlua;
3788
3789 /* Note that this hlua struct is from the session and not from the applet. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01003790 if (!s->hlua) {
3791 lua_pushnil(L);
3792 return 1;
3793 }
3794 hlua = s->hlua;
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01003795
3796 /* Push configuration index in the stack. */
3797 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
3798
3799 return 1;
3800}
3801
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003802/* If expected data not yet available, it returns a yield. This function
3803 * consumes the data in the buffer. It returns a string containing the
3804 * data. This string can be empty.
3805 */
3806__LJMP static int hlua_applet_http_getline_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003807{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003808 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3809 struct stream_interface *si = appctx->appctx->owner;
3810 struct channel *chn = si_ic(si);
3811 int ret;
3812 char *blk1;
3813 int len1;
3814 char *blk2;
3815 int len2;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003816
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003817 /* Maybe we cant send a 100-continue ? */
3818 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_100C) {
3819 ret = bi_putblk(chn, HTTP_100C, strlen(HTTP_100C));
3820 /* if ret == -2 or -3 the channel closed or the message si too
3821 * big for the buffers. We cant send anything. So, we ignoring
3822 * the error, considers that the 100-continue is sent, and try
3823 * to receive.
3824 * If ret is -1, we dont have room in the buffer, so we yield.
3825 */
3826 if (ret == -1) {
3827 si_applet_cant_put(si);
3828 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
3829 }
3830 appctx->appctx->ctx.hlua_apphttp.flags &= ~APPLET_100C;
3831 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003832
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003833 /* Check for the end of the data. */
3834 if (appctx->appctx->ctx.hlua_apphttp.left_bytes <= 0) {
3835 luaL_pushresult(&appctx->b);
3836 return 1;
3837 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003838
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003839 /* Read the maximum amount of data avalaible. */
3840 ret = bo_getline_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003841
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003842 /* Data not yet avalaible. return yield. */
3843 if (ret == 0) {
3844 si_applet_cant_get(si);
3845 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_getline_yield, TICK_ETERNITY, 0));
3846 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003847
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003848 /* End of data: commit the total strings and return. */
3849 if (ret < 0) {
3850 luaL_pushresult(&appctx->b);
3851 return 1;
3852 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003853
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003854 /* Ensure that the block 2 length is usable. */
3855 if (ret == 1)
3856 len2 = 0;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003857
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003858 /* Copy the fisrt block caping to the length required. */
3859 if (len1 > appctx->appctx->ctx.hlua_apphttp.left_bytes)
3860 len1 = appctx->appctx->ctx.hlua_apphttp.left_bytes;
3861 luaL_addlstring(&appctx->b, blk1, len1);
3862 appctx->appctx->ctx.hlua_apphttp.left_bytes -= len1;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003863
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003864 /* Copy the second block. */
3865 if (len2 > appctx->appctx->ctx.hlua_apphttp.left_bytes)
3866 len2 = appctx->appctx->ctx.hlua_apphttp.left_bytes;
3867 luaL_addlstring(&appctx->b, blk2, len2);
3868 appctx->appctx->ctx.hlua_apphttp.left_bytes -= len2;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003869
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003870 /* Consume input channel output buffer data. */
3871 bo_skip(si_oc(si), len1 + len2);
3872 luaL_pushresult(&appctx->b);
3873 return 1;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003874}
3875
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003876/* Check arguments for the fucntion "hlua_channel_get_yield". */
3877__LJMP static int hlua_applet_http_getline(lua_State *L)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003878{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003879 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003880
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003881 /* Initialise the string catenation. */
3882 luaL_buffinit(L, &appctx->b);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003883
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003884 return MAY_LJMP(hlua_applet_http_getline_yield(L, 0, 0));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003885}
3886
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003887/* If expected data not yet available, it returns a yield. This function
3888 * consumes the data in the buffer. It returns a string containing the
3889 * data. This string can be empty.
3890 */
3891__LJMP static int hlua_applet_http_recv_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003892{
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003893 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3894 struct stream_interface *si = appctx->appctx->owner;
3895 int len = MAY_LJMP(luaL_checkinteger(L, 2));
3896 struct channel *chn = si_ic(si);
3897 int ret;
3898 char *blk1;
3899 int len1;
3900 char *blk2;
3901 int len2;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003902
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003903 /* Maybe we cant send a 100-continue ? */
3904 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_100C) {
3905 ret = bi_putblk(chn, HTTP_100C, strlen(HTTP_100C));
3906 /* if ret == -2 or -3 the channel closed or the message si too
3907 * big for the buffers. We cant send anything. So, we ignoring
3908 * the error, considers that the 100-continue is sent, and try
3909 * to receive.
3910 * If ret is -1, we dont have room in the buffer, so we yield.
3911 */
3912 if (ret == -1) {
3913 si_applet_cant_put(si);
3914 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
3915 }
3916 appctx->appctx->ctx.hlua_apphttp.flags &= ~APPLET_100C;
3917 }
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003918
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003919 /* Read the maximum amount of data avalaible. */
3920 ret = bo_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01003921
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02003922 /* Data not yet avalaible. return yield. */
3923 if (ret == 0) {
3924 si_applet_cant_get(si);
3925 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
3926 }
3927
3928 /* End of data: commit the total strings and return. */
3929 if (ret < 0) {
3930 luaL_pushresult(&appctx->b);
3931 return 1;
3932 }
3933
3934 /* Ensure that the block 2 length is usable. */
3935 if (ret == 1)
3936 len2 = 0;
3937
3938 /* Copy the fisrt block caping to the length required. */
3939 if (len1 > len)
3940 len1 = len;
3941 luaL_addlstring(&appctx->b, blk1, len1);
3942 len -= len1;
3943
3944 /* Copy the second block. */
3945 if (len2 > len)
3946 len2 = len;
3947 luaL_addlstring(&appctx->b, blk2, len2);
3948 len -= len2;
3949
3950 /* Consume input channel output buffer data. */
3951 bo_skip(si_oc(si), len1 + len2);
3952 if (appctx->appctx->ctx.hlua_apphttp.left_bytes != -1)
3953 appctx->appctx->ctx.hlua_apphttp.left_bytes -= len;
3954
3955 /* If we are no other data avalaible, yield waiting for new data. */
3956 if (len > 0) {
3957 lua_pushinteger(L, len);
3958 lua_replace(L, 2);
3959 si_applet_cant_get(si);
3960 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_recv_yield, TICK_ETERNITY, 0));
3961 }
3962
3963 /* return the result. */
3964 luaL_pushresult(&appctx->b);
3965 return 1;
3966}
3967
3968/* Check arguments for the fucntion "hlua_channel_get_yield". */
3969__LJMP static int hlua_applet_http_recv(lua_State *L)
3970{
3971 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
3972 int len = -1;
3973
3974 /* Check arguments. */
3975 if (lua_gettop(L) > 2)
3976 WILL_LJMP(luaL_error(L, "The 'recv' function requires between 1 and 2 arguments."));
3977 if (lua_gettop(L) >= 2) {
3978 len = MAY_LJMP(luaL_checkinteger(L, 2));
3979 lua_pop(L, 1);
3980 }
3981
3982 /* Check the required length */
3983 if (len == -1 || len > appctx->appctx->ctx.hlua_apphttp.left_bytes)
3984 len = appctx->appctx->ctx.hlua_apphttp.left_bytes;
3985 lua_pushinteger(L, len);
3986
3987 /* Initialise the string catenation. */
3988 luaL_buffinit(L, &appctx->b);
3989
3990 return MAY_LJMP(hlua_applet_http_recv_yield(L, 0, 0));
3991}
3992
3993/* Append data in the output side of the buffer. This data is immediatly
3994 * sent. The fcuntion returns the ammount of data writed. If the buffer
3995 * cannot contains the data, the function yield. The function returns -1
3996 * if the channel is closed.
3997 */
3998__LJMP static int hlua_applet_http_send_yield(lua_State *L, int status, lua_KContext ctx)
3999{
4000 size_t len;
4001 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4002 const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len));
4003 int l = MAY_LJMP(luaL_checkinteger(L, 3));
4004 struct stream_interface *si = appctx->appctx->owner;
4005 struct channel *chn = si_ic(si);
4006 int max;
4007
4008 /* Get the max amount of data which can write as input in the channel. */
4009 max = channel_recv_max(chn);
4010 if (max > (len - l))
4011 max = len - l;
4012
4013 /* Copy data. */
4014 bi_putblk(chn, str + l, max);
4015
4016 /* update counters. */
4017 l += max;
4018 lua_pop(L, 1);
4019 lua_pushinteger(L, l);
4020
4021 /* If some data is not send, declares the situation to the
4022 * applet, and returns a yield.
4023 */
4024 if (l < len) {
4025 si_applet_cant_put(si);
4026 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_send_yield, TICK_ETERNITY, 0));
4027 }
4028
4029 return 1;
4030}
4031
4032/* Just a wraper of "hlua_applet_send_yield". This wrapper permits
4033 * yield the LUA process, and resume it without checking the
4034 * input arguments.
4035 */
4036__LJMP static int hlua_applet_http_send(lua_State *L)
4037{
4038 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4039 size_t len;
4040 char hex[10];
4041
4042 MAY_LJMP(luaL_checklstring(L, 2, &len));
4043
4044 /* If transfer encoding chunked is selected, we surround the data
4045 * by chunk data.
4046 */
4047 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_CHUNKED) {
4048 snprintf(hex, 9, "%x", (unsigned int)len);
4049 lua_pushfstring(L, "%s\r\n", hex);
4050 lua_insert(L, 2); /* swap the last 2 entries. */
4051 lua_pushstring(L, "\r\n");
4052 lua_concat(L, 3);
4053 }
4054
4055 /* This interger is used for followinf the amount of data sent. */
4056 lua_pushinteger(L, 0);
4057
4058 /* We want to send some data. Headers must be sent. */
4059 if (!(appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HDR_SENT)) {
4060 hlua_pusherror(L, "Lua: 'send' you must call start_response() before sending data.");
4061 WILL_LJMP(lua_error(L));
4062 }
4063
4064 return MAY_LJMP(hlua_applet_http_send_yield(L, 0, 0));
4065}
4066
4067__LJMP static int hlua_applet_http_addheader(lua_State *L)
4068{
4069 const char *name;
4070 int ret;
4071
4072 MAY_LJMP(hlua_checkapplet_http(L, 1));
4073 name = MAY_LJMP(luaL_checkstring(L, 2));
4074 MAY_LJMP(luaL_checkstring(L, 3));
4075
4076 /* Push in the stack the "response" entry. */
4077 ret = lua_getfield(L, 1, "response");
4078 if (ret != LUA_TTABLE) {
4079 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response'] "
4080 "is expected as an array. %s found", lua_typename(L, ret));
4081 WILL_LJMP(lua_error(L));
4082 }
4083
4084 /* check if the header is already registered if it is not
4085 * the case, register it.
4086 */
4087 ret = lua_getfield(L, -1, name);
4088 if (ret == LUA_TNIL) {
4089
4090 /* Entry not found. */
4091 lua_pop(L, 1); /* remove the nil. The "response" table is the top of the stack. */
4092
4093 /* Insert the new header name in the array in the top of the stack.
4094 * It left the new array in the top of the stack.
4095 */
4096 lua_newtable(L);
4097 lua_pushvalue(L, 2);
4098 lua_pushvalue(L, -2);
4099 lua_settable(L, -4);
4100
4101 } else if (ret != LUA_TTABLE) {
4102
4103 /* corruption error. */
4104 hlua_pusherror(L, "Lua: 'add_header' internal error: AppletHTTP['response']['%s'] "
4105 "is expected as an array. %s found", name, lua_typename(L, ret));
4106 WILL_LJMP(lua_error(L));
4107 }
4108
4109 /* Now the top od thestack is an array of values. We push
4110 * the header value as new entry.
4111 */
4112 lua_pushvalue(L, 3);
4113 ret = lua_rawlen(L, -2);
4114 lua_rawseti(L, -2, ret + 1);
4115 lua_pushboolean(L, 1);
4116 return 1;
4117}
4118
4119__LJMP static int hlua_applet_http_status(lua_State *L)
4120{
4121 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4122 int status = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004123 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004124
4125 if (status < 100 || status > 599) {
4126 lua_pushboolean(L, 0);
4127 return 1;
4128 }
4129
4130 appctx->appctx->ctx.hlua_apphttp.status = status;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004131 appctx->appctx->ctx.hlua_apphttp.reason = reason;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004132 lua_pushboolean(L, 1);
4133 return 1;
4134}
4135
4136/* We will build the status line and the headers of the HTTP response.
4137 * We will try send at once if its not possible, we give back the hand
4138 * waiting for more room.
4139 */
4140__LJMP static int hlua_applet_http_start_response_yield(lua_State *L, int status, lua_KContext ctx)
4141{
4142 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
4143 struct stream_interface *si = appctx->appctx->owner;
4144 struct channel *chn = si_ic(si);
4145 int ret;
4146 size_t len;
4147 const char *msg;
4148
4149 /* Get the message as the first argument on the stack. */
4150 msg = MAY_LJMP(luaL_checklstring(L, 2, &len));
4151
4152 /* Send the message at once. */
4153 ret = bi_putblk(chn, msg, len);
4154
4155 /* if ret == -2 or -3 the channel closed or the message si too
4156 * big for the buffers.
4157 */
4158 if (ret == -2 || ret == -3) {
4159 hlua_pusherror(L, "Lua: 'start_response': response header block too big");
4160 WILL_LJMP(lua_error(L));
4161 }
4162
4163 /* If ret is -1, we dont have room in the buffer, so we yield. */
4164 if (ret == -1) {
4165 si_applet_cant_put(si);
4166 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_applet_http_start_response_yield, TICK_ETERNITY, 0));
4167 }
4168
4169 /* Headers sent, set the flag. */
4170 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_HDR_SENT;
4171 return 0;
4172}
4173
4174__LJMP static int hlua_applet_http_start_response(lua_State *L)
4175{
4176 struct chunk *tmp = get_trash_chunk();
4177 struct hlua_appctx *appctx = MAY_LJMP(hlua_checkapplet_http(L, 1));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004178 const char *name;
4179 const char *value;
4180 int id;
4181 int hdr_connection = 0;
4182 int hdr_contentlength = -1;
4183 int hdr_chunked = 0;
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004184 const char *reason = appctx->appctx->ctx.hlua_apphttp.reason;
4185
4186 if (reason == NULL)
4187 reason = get_reason(appctx->appctx->ctx.hlua_apphttp.status);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004188
4189 /* Use the same http version than the request. */
4190 chunk_appendf(tmp, "HTTP/1.%c %d %s\r\n",
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01004191 appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11 ? '1' : '0',
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004192 appctx->appctx->ctx.hlua_apphttp.status,
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004193 reason);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004194
4195 /* Get the array associated to the field "response" in the object AppletHTTP. */
4196 lua_pushvalue(L, 0);
4197 if (lua_getfield(L, 1, "response") != LUA_TTABLE) {
4198 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'] missing.\n",
4199 appctx->appctx->rule->arg.hlua_rule->fcn.name);
4200 WILL_LJMP(lua_error(L));
4201 }
4202
4203 /* Browse the list of headers. */
4204 lua_pushnil(L);
4205 while(lua_next(L, -2) != 0) {
4206
4207 /* We expect a string as -2. */
4208 if (lua_type(L, -2) != LUA_TSTRING) {
4209 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response'][] element must be a string. got %s.\n",
4210 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4211 lua_typename(L, lua_type(L, -2)));
4212 WILL_LJMP(lua_error(L));
4213 }
4214 name = lua_tostring(L, -2);
4215
4216 /* We expect an array as -1. */
4217 if (lua_type(L, -1) != LUA_TTABLE) {
4218 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'] element must be an table. got %s.\n",
4219 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4220 name,
4221 lua_typename(L, lua_type(L, -1)));
4222 WILL_LJMP(lua_error(L));
4223 }
4224
4225 /* Browse the table who is on the top of the stack. */
4226 lua_pushnil(L);
4227 while(lua_next(L, -2) != 0) {
4228
4229 /* We expect a number as -2. */
4230 if (lua_type(L, -2) != LUA_TNUMBER) {
4231 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][] element must be a number. got %s.\n",
4232 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4233 name,
4234 lua_typename(L, lua_type(L, -2)));
4235 WILL_LJMP(lua_error(L));
4236 }
4237 id = lua_tointeger(L, -2);
4238
4239 /* We expect a string as -2. */
4240 if (lua_type(L, -1) != LUA_TSTRING) {
4241 hlua_pusherror(L, "Lua applet http '%s': AppletHTTP['response']['%s'][%d] element must be a string. got %s.\n",
4242 appctx->appctx->rule->arg.hlua_rule->fcn.name,
4243 name, id,
4244 lua_typename(L, lua_type(L, -1)));
4245 WILL_LJMP(lua_error(L));
4246 }
4247 value = lua_tostring(L, -1);
4248
4249 /* Catenate a new header. */
4250 chunk_appendf(tmp, "%s: %s\r\n", name, value);
4251
4252 /* Protocol checks. */
4253
4254 /* Check if the header conneciton is present. */
4255 if (strcasecmp("connection", name) == 0)
4256 hdr_connection = 1;
4257
4258 /* Copy the header content length. The length conversion
4259 * is done without control. If it contains a ad value, this
4260 * is not our problem.
4261 */
4262 if (strcasecmp("content-length", name) == 0)
4263 hdr_contentlength = atoi(value);
4264
4265 /* Check if the client annouces a transfer-encoding chunked it self. */
4266 if (strcasecmp("transfer-encoding", name) == 0 &&
4267 strcasecmp("chunked", value) == 0)
4268 hdr_chunked = 1;
4269
4270 /* Remove the array from the stack, and get next element with a remaining string. */
4271 lua_pop(L, 1);
4272 }
4273
4274 /* Remove the array from the stack, and get next element with a remaining string. */
4275 lua_pop(L, 1);
4276 }
4277
4278 /* If the http protocol version is 1.1, we expect an header "connection" set
4279 * to "close" to be HAProxy/keeplive compliant. Otherwise, we expect nothing.
4280 * If the header conneciton is present, don't change it, if it is not present,
4281 * we must set.
4282 *
4283 * we set a "connection: close" header for ensuring that the keepalive will be
4284 * respected by haproxy. HAProcy considers that the application cloe the connection
4285 * and it keep the connection from the client open.
4286 */
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01004287 if (appctx->appctx->ctx.hlua_apphttp.flags & APPLET_HTTP11 && !hdr_connection)
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004288 chunk_appendf(tmp, "Connection: close\r\n");
4289
4290 /* If we dont have a content-length set, we must announce a transfer enconding
4291 * chunked. This is required by haproxy for the keepalive compliance.
4292 * If the applet annouce a transfer-encoding chunked itslef, don't
4293 * do anything.
4294 */
4295 if (hdr_contentlength == -1 && hdr_chunked == 0) {
4296 chunk_appendf(tmp, "Transfer-encoding: chunked\r\n");
4297 appctx->appctx->ctx.hlua_apphttp.flags |= APPLET_CHUNKED;
4298 }
4299
4300 /* Finalize headers. */
4301 chunk_appendf(tmp, "\r\n");
4302
4303 /* Remove the last entry and the array of headers */
4304 lua_pop(L, 2);
4305
4306 /* Push the headers block. */
4307 lua_pushlstring(L, tmp->str, tmp->len);
4308
4309 return MAY_LJMP(hlua_applet_http_start_response_yield(L, 0, 0));
4310}
4311
4312/*
4313 *
4314 *
4315 * Class HTTP
4316 *
4317 *
4318 */
4319
4320/* Returns a struct hlua_txn if the stack entry "ud" is
4321 * a class stream, otherwise it throws an error.
4322 */
4323__LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud)
4324{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02004325 return MAY_LJMP(hlua_checkudata(L, ud, class_http_ref));
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004326}
4327
4328/* This function creates and push in the stack a HTTP object
4329 * according with a current TXN.
4330 */
4331static int hlua_http_new(lua_State *L, struct hlua_txn *txn)
4332{
4333 struct hlua_txn *htxn;
4334
4335 /* Check stack size. */
4336 if (!lua_checkstack(L, 3))
4337 return 0;
4338
4339 /* Create the object: obj[0] = userdata.
4340 * Note that the base of the Converters object is the
4341 * same than the TXN object.
4342 */
4343 lua_newtable(L);
4344 htxn = lua_newuserdata(L, sizeof(*htxn));
4345 lua_rawseti(L, -2, 0);
4346
4347 htxn->s = txn->s;
4348 htxn->p = txn->p;
4349
4350 /* Pop a class stream metatable and affect it to the table. */
4351 lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref);
4352 lua_setmetatable(L, -2);
4353
4354 return 1;
4355}
4356
4357/* This function creates ans returns an array of HTTP headers.
4358 * This function does not fails. It is used as wrapper with the
4359 * 2 following functions.
4360 */
4361__LJMP static int hlua_http_get_headers(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg)
4362{
4363 const char *cur_ptr, *cur_next, *p;
4364 int old_idx, cur_idx;
4365 struct hdr_idx_elem *cur_hdr;
4366 const char *hn, *hv;
4367 int hnl, hvl;
4368 int type;
4369 const char *in;
4370 char *out;
4371 int len;
4372
4373 /* Create the table. */
4374 lua_newtable(L);
4375
4376 if (!htxn->s->txn)
4377 return 1;
4378
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004379 /* Check if a valid response is parsed */
4380 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4381 return 1;
4382
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004383 /* Build array of headers. */
4384 old_idx = 0;
4385 cur_next = msg->chn->buf->p + hdr_idx_first_pos(&htxn->s->txn->hdr_idx);
4386
4387 while (1) {
4388 cur_idx = htxn->s->txn->hdr_idx.v[old_idx].next;
4389 if (!cur_idx)
4390 break;
4391 old_idx = cur_idx;
4392
4393 cur_hdr = &htxn->s->txn->hdr_idx.v[cur_idx];
4394 cur_ptr = cur_next;
4395 cur_next = cur_ptr + cur_hdr->len + cur_hdr->cr + 1;
4396
4397 /* Now we have one full header at cur_ptr of len cur_hdr->len,
4398 * and the next header starts at cur_next. We'll check
4399 * this header in the list as well as against the default
4400 * rule.
4401 */
4402
4403 /* look for ': *'. */
4404 hn = cur_ptr;
4405 for (p = cur_ptr; p < cur_ptr + cur_hdr->len && *p != ':'; p++);
4406 if (p >= cur_ptr+cur_hdr->len)
4407 continue;
4408 hnl = p - hn;
4409 p++;
4410 while (p < cur_ptr+cur_hdr->len && ( *p == ' ' || *p == '\t' ))
4411 p++;
4412 if (p >= cur_ptr+cur_hdr->len)
4413 continue;
4414 hv = p;
4415 hvl = cur_ptr+cur_hdr->len-p;
4416
4417 /* Lowercase the key. Don't check the size of trash, it have
4418 * the size of one buffer and the input data contains in one
4419 * buffer.
4420 */
4421 out = trash.str;
4422 for (in=hn; in<hn+hnl; in++, out++)
4423 *out = tolower(*in);
4424 *out = '\0';
4425
4426 /* Check for existing entry:
4427 * assume that the table is on the top of the stack, and
4428 * push the key in the stack, the function lua_gettable()
4429 * perform the lookup.
4430 */
4431 lua_pushlstring(L, trash.str, hnl);
4432 lua_gettable(L, -2);
4433 type = lua_type(L, -1);
4434
4435 switch (type) {
4436 case LUA_TNIL:
4437 /* Table not found, create it. */
4438 lua_pop(L, 1); /* remove the nil value. */
4439 lua_pushlstring(L, trash.str, hnl); /* push the header name as key. */
4440 lua_newtable(L); /* create and push empty table. */
4441 lua_pushlstring(L, hv, hvl); /* push header value. */
4442 lua_rawseti(L, -2, 0); /* index header value (pop it). */
4443 lua_rawset(L, -3); /* index new table with header name (pop the values). */
4444 break;
4445
4446 case LUA_TTABLE:
4447 /* Entry found: push the value in the table. */
4448 len = lua_rawlen(L, -1);
4449 lua_pushlstring(L, hv, hvl); /* push header value. */
4450 lua_rawseti(L, -2, len+1); /* index header value (pop it). */
4451 lua_pop(L, 1); /* remove the table (it is stored in the main table). */
4452 break;
4453
4454 default:
4455 /* Other cases are errors. */
4456 hlua_pusherror(L, "internal error during the parsing of headers.");
4457 WILL_LJMP(lua_error(L));
4458 }
4459 }
4460
4461 return 1;
4462}
4463
4464__LJMP static int hlua_http_req_get_headers(lua_State *L)
4465{
4466 struct hlua_txn *htxn;
4467
4468 MAY_LJMP(check_args(L, 1, "req_get_headers"));
4469 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4470
4471 return hlua_http_get_headers(L, htxn, &htxn->s->txn->req);
4472}
4473
4474__LJMP static int hlua_http_res_get_headers(lua_State *L)
4475{
4476 struct hlua_txn *htxn;
4477
4478 MAY_LJMP(check_args(L, 1, "res_get_headers"));
4479 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4480
4481 return hlua_http_get_headers(L, htxn, &htxn->s->txn->rsp);
4482}
4483
4484/* This function replace full header, or just a value in
4485 * the request or in the response. It is a wrapper fir the
4486 * 4 following functions.
4487 */
4488__LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct hlua_txn *htxn,
4489 struct http_msg *msg, int action)
4490{
4491 size_t name_len;
4492 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
4493 const char *reg = MAY_LJMP(luaL_checkstring(L, 3));
4494 const char *value = MAY_LJMP(luaL_checkstring(L, 4));
4495 struct my_regex re;
4496
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004497 /* Check if a valid response is parsed */
4498 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4499 return 0;
4500
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02004501 if (!regex_comp(reg, &re, 1, 1, NULL))
4502 WILL_LJMP(luaL_argerror(L, 3, "invalid regex"));
4503
4504 http_transform_header_str(htxn->s, msg, name, name_len, value, &re, action);
4505 regex_free(&re);
4506 return 0;
4507}
4508
4509__LJMP static int hlua_http_req_rep_hdr(lua_State *L)
4510{
4511 struct hlua_txn *htxn;
4512
4513 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
4514 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4515
4516 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->req, ACT_HTTP_REPLACE_HDR));
4517}
4518
4519__LJMP static int hlua_http_res_rep_hdr(lua_State *L)
4520{
4521 struct hlua_txn *htxn;
4522
4523 MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
4524 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4525
4526 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->rsp, ACT_HTTP_REPLACE_HDR));
4527}
4528
4529__LJMP static int hlua_http_req_rep_val(lua_State *L)
4530{
4531 struct hlua_txn *htxn;
4532
4533 MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
4534 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4535
4536 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->req, ACT_HTTP_REPLACE_VAL));
4537}
4538
4539__LJMP static int hlua_http_res_rep_val(lua_State *L)
4540{
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004541 struct hlua_txn *htxn;
4542
4543 MAY_LJMP(check_args(L, 4, "res_rep_val"));
4544 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4545
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02004546 return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->rsp, ACT_HTTP_REPLACE_VAL));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004547}
4548
4549/* This function deletes all the occurences of an header.
4550 * It is a wrapper for the 2 following functions.
4551 */
4552__LJMP static inline int hlua_http_del_hdr(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg)
4553{
4554 size_t len;
4555 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4556 struct hdr_ctx ctx;
Willy Tarreaueee5b512015-04-03 23:46:31 +02004557 struct http_txn *txn = htxn->s->txn;
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004558
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004559 /* Check if a valid response is parsed */
4560 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4561 return 0;
4562
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004563 ctx.idx = 0;
4564 while (http_find_header2(name, len, msg->chn->buf->p, &txn->hdr_idx, &ctx))
4565 http_remove_header2(msg, &txn->hdr_idx, &ctx);
4566 return 0;
4567}
4568
4569__LJMP static int hlua_http_req_del_hdr(lua_State *L)
4570{
4571 struct hlua_txn *htxn;
4572
4573 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
4574 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4575
Willy Tarreaueee5b512015-04-03 23:46:31 +02004576 return hlua_http_del_hdr(L, htxn, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004577}
4578
4579__LJMP static int hlua_http_res_del_hdr(lua_State *L)
4580{
4581 struct hlua_txn *htxn;
4582
4583 MAY_LJMP(check_args(L, 2, "req_del_hdr"));
4584 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4585
Willy Tarreaueee5b512015-04-03 23:46:31 +02004586 return hlua_http_del_hdr(L, htxn, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004587}
4588
4589/* This function adds an header. It is a wrapper used by
4590 * the 2 following functions.
4591 */
4592__LJMP static inline int hlua_http_add_hdr(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg)
4593{
4594 size_t name_len;
4595 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
4596 size_t value_len;
4597 const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len));
4598 char *p;
4599
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004600 /* Check if a valid message is parsed */
4601 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4602 return 0;
4603
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004604 /* Check length. */
4605 trash.len = value_len + name_len + 2;
4606 if (trash.len > trash.size)
4607 return 0;
4608
4609 /* Creates the header string. */
4610 p = trash.str;
4611 memcpy(p, name, name_len);
4612 p += name_len;
4613 *p = ':';
4614 p++;
4615 *p = ' ';
4616 p++;
4617 memcpy(p, value, value_len);
4618
Willy Tarreaueee5b512015-04-03 23:46:31 +02004619 lua_pushboolean(L, http_header_add_tail2(msg, &htxn->s->txn->hdr_idx,
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004620 trash.str, trash.len) != 0);
4621
4622 return 0;
4623}
4624
4625__LJMP static int hlua_http_req_add_hdr(lua_State *L)
4626{
4627 struct hlua_txn *htxn;
4628
4629 MAY_LJMP(check_args(L, 3, "req_add_hdr"));
4630 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4631
Willy Tarreaueee5b512015-04-03 23:46:31 +02004632 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004633}
4634
4635__LJMP static int hlua_http_res_add_hdr(lua_State *L)
4636{
4637 struct hlua_txn *htxn;
4638
4639 MAY_LJMP(check_args(L, 3, "res_add_hdr"));
4640 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4641
Willy Tarreaueee5b512015-04-03 23:46:31 +02004642 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004643}
4644
4645static int hlua_http_req_set_hdr(lua_State *L)
4646{
4647 struct hlua_txn *htxn;
4648
4649 MAY_LJMP(check_args(L, 3, "req_set_hdr"));
4650 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4651
Willy Tarreaueee5b512015-04-03 23:46:31 +02004652 hlua_http_del_hdr(L, htxn, &htxn->s->txn->req);
4653 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->req);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004654}
4655
4656static int hlua_http_res_set_hdr(lua_State *L)
4657{
4658 struct hlua_txn *htxn;
4659
4660 MAY_LJMP(check_args(L, 3, "res_set_hdr"));
4661 htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4662
Willy Tarreaueee5b512015-04-03 23:46:31 +02004663 hlua_http_del_hdr(L, htxn, &htxn->s->txn->rsp);
4664 return hlua_http_add_hdr(L, htxn, &htxn->s->txn->rsp);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004665}
4666
4667/* This function set the method. */
4668static int hlua_http_req_set_meth(lua_State *L)
4669{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02004670 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004671 size_t name_len;
4672 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004673
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004674 /* Check if a valid request is parsed */
4675 if (unlikely(htxn->s->txn->req.msg_state < HTTP_MSG_BODY)) {
4676 lua_pushboolean(L, 0);
4677 return 1;
4678 }
4679
Willy Tarreau987e3fb2015-04-04 01:09:08 +02004680 lua_pushboolean(L, http_replace_req_line(0, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004681 return 1;
4682}
4683
4684/* This function set the method. */
4685static int hlua_http_req_set_path(lua_State *L)
4686{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02004687 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004688 size_t name_len;
4689 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004690
4691 /* Check if a valid request is parsed */
4692 if (unlikely(htxn->s->txn->req.msg_state < HTTP_MSG_BODY)) {
4693 lua_pushboolean(L, 0);
4694 return 1;
4695 }
4696
Willy Tarreau987e3fb2015-04-04 01:09:08 +02004697 lua_pushboolean(L, http_replace_req_line(1, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004698 return 1;
4699}
4700
4701/* This function set the query-string. */
4702static int hlua_http_req_set_query(lua_State *L)
4703{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02004704 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004705 size_t name_len;
4706 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004707
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004708 /* Check if a valid request is parsed */
4709 if (unlikely(htxn->s->txn->req.msg_state < HTTP_MSG_BODY)) {
4710 lua_pushboolean(L, 0);
4711 return 1;
4712 }
4713
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004714 /* Check length. */
4715 if (name_len > trash.size - 1) {
4716 lua_pushboolean(L, 0);
4717 return 1;
4718 }
4719
4720 /* Add the mark question as prefix. */
4721 chunk_reset(&trash);
4722 trash.str[trash.len++] = '?';
4723 memcpy(trash.str + trash.len, name, name_len);
4724 trash.len += name_len;
4725
Willy Tarreau987e3fb2015-04-04 01:09:08 +02004726 lua_pushboolean(L, http_replace_req_line(2, trash.str, trash.len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004727 return 1;
4728}
4729
4730/* This function set the uri. */
4731static int hlua_http_req_set_uri(lua_State *L)
4732{
Willy Tarreaubcb39cc2015-04-06 11:21:44 +02004733 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004734 size_t name_len;
4735 const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004736
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004737 /* Check if a valid request is parsed */
4738 if (unlikely(htxn->s->txn->req.msg_state < HTTP_MSG_BODY)) {
4739 lua_pushboolean(L, 0);
4740 return 1;
4741 }
4742
Willy Tarreau987e3fb2015-04-04 01:09:08 +02004743 lua_pushboolean(L, http_replace_req_line(3, name, name_len, htxn->p, htxn->s) != -1);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004744 return 1;
4745}
4746
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004747/* This function set the response code & optionally reason. */
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02004748static int hlua_http_res_set_status(lua_State *L)
4749{
4750 struct hlua_txn *htxn = MAY_LJMP(hlua_checkhttp(L, 1));
4751 unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004752 const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02004753
Thierry FOURNIER / OZON.IOb84ae922016-08-02 23:44:58 +02004754 /* Check if a valid response is parsed */
4755 if (unlikely(htxn->s->txn->rsp.msg_state < HTTP_MSG_BODY))
4756 return 0;
4757
Robin H. Johnson52f5db22017-01-01 13:10:52 -08004758 http_set_status(code, reason, htxn->s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02004759 return 0;
4760}
4761
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004762/*
4763 *
4764 *
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004765 * Class TXN
4766 *
4767 *
4768 */
4769
4770/* Returns a struct hlua_session if the stack entry "ud" is
Willy Tarreau87b09662015-04-03 00:22:06 +02004771 * a class stream, otherwise it throws an error.
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004772 */
4773__LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud)
4774{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02004775 return MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004776}
4777
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02004778__LJMP static int hlua_set_var(lua_State *L)
4779{
4780 struct hlua_txn *htxn;
4781 const char *name;
4782 size_t len;
4783 struct sample smp;
4784
4785 MAY_LJMP(check_args(L, 3, "set_var"));
4786
4787 /* It is useles to retrieve the stream, but this function
4788 * runs only in a stream context.
4789 */
4790 htxn = MAY_LJMP(hlua_checktxn(L, 1));
4791 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4792
4793 /* Converts the third argument in a sample. */
4794 hlua_lua2smp(L, 3, &smp);
4795
4796 /* Store the sample in a variable. */
Willy Tarreau7560dd42016-03-10 16:28:58 +01004797 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01004798 vars_set_by_name(name, len, &smp);
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02004799 return 0;
4800}
4801
Christopher Faulet85d79c92016-11-09 16:54:56 +01004802__LJMP static int hlua_unset_var(lua_State *L)
4803{
4804 struct hlua_txn *htxn;
4805 const char *name;
4806 size_t len;
4807 struct sample smp;
4808
4809 MAY_LJMP(check_args(L, 2, "unset_var"));
4810
4811 /* It is useles to retrieve the stream, but this function
4812 * runs only in a stream context.
4813 */
4814 htxn = MAY_LJMP(hlua_checktxn(L, 1));
4815 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4816
4817 /* Unset the variable. */
4818 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
4819 vars_unset_by_name(name, len, &smp);
4820 return 0;
4821}
4822
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02004823__LJMP static int hlua_get_var(lua_State *L)
4824{
4825 struct hlua_txn *htxn;
4826 const char *name;
4827 size_t len;
4828 struct sample smp;
4829
4830 MAY_LJMP(check_args(L, 2, "get_var"));
4831
4832 /* It is useles to retrieve the stream, but this function
4833 * runs only in a stream context.
4834 */
4835 htxn = MAY_LJMP(hlua_checktxn(L, 1));
4836 name = MAY_LJMP(luaL_checklstring(L, 2, &len));
4837
Willy Tarreau7560dd42016-03-10 16:28:58 +01004838 smp_set_owner(&smp, htxn->p, htxn->s->sess, htxn->s, htxn->dir & SMP_OPT_DIR);
Willy Tarreau6204cd92016-03-10 16:33:04 +01004839 if (!vars_get_by_name(name, len, &smp)) {
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02004840 lua_pushnil(L);
4841 return 1;
4842 }
4843
4844 return hlua_smp2lua(L, &smp);
4845}
4846
Willy Tarreau59551662015-03-10 14:23:13 +01004847__LJMP static int hlua_set_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004848{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01004849 struct hlua *hlua;
4850
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004851 MAY_LJMP(check_args(L, 2, "set_priv"));
4852
Willy Tarreau87b09662015-04-03 00:22:06 +02004853 /* It is useles to retrieve the stream, but this function
4854 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004855 */
4856 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01004857 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004858
4859 /* Remove previous value. */
4860 if (hlua->Mref != -1)
4861 luaL_unref(L, hlua->Mref, LUA_REGISTRYINDEX);
4862
4863 /* Get and store new value. */
4864 lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */
4865 hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */
4866
4867 return 0;
4868}
4869
Willy Tarreau59551662015-03-10 14:23:13 +01004870__LJMP static int hlua_get_priv(lua_State *L)
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004871{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01004872 struct hlua *hlua;
4873
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004874 MAY_LJMP(check_args(L, 1, "get_priv"));
4875
Willy Tarreau87b09662015-04-03 00:22:06 +02004876 /* It is useles to retrieve the stream, but this function
4877 * runs only in a stream context.
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004878 */
4879 MAY_LJMP(hlua_checktxn(L, 1));
Willy Tarreau80f5fae2015-02-27 16:38:20 +01004880 hlua = hlua_gethlua(L);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01004881
4882 /* Push configuration index in the stack. */
4883 lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref);
4884
4885 return 1;
4886}
4887
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004888/* Create stack entry containing a class TXN. This function
4889 * return 0 if the stack does not contains free slots,
4890 * otherwise it returns 1.
4891 */
Thierry FOURNIERab00df62016-07-14 11:42:37 +02004892static int hlua_txn_new(lua_State *L, struct stream *s, struct proxy *p, int dir, int flags)
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004893{
Willy Tarreaude491382015-04-06 11:04:28 +02004894 struct hlua_txn *htxn;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004895
4896 /* Check stack size. */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01004897 if (!lua_checkstack(L, 3))
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004898 return 0;
4899
4900 /* NOTE: The allocation never fails. The failure
4901 * throw an error, and the function never returns.
4902 * if the throw is not avalaible, the process is aborted.
4903 */
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01004904 /* Create the object: obj[0] = userdata. */
4905 lua_newtable(L);
Willy Tarreaude491382015-04-06 11:04:28 +02004906 htxn = lua_newuserdata(L, sizeof(*htxn));
Thierry FOURNIER2297bc22015-03-11 17:43:33 +01004907 lua_rawseti(L, -2, 0);
4908
Willy Tarreaude491382015-04-06 11:04:28 +02004909 htxn->s = s;
4910 htxn->p = p;
Thierry FOURNIERc4eebc82015-11-02 10:01:59 +01004911 htxn->dir = dir;
Thierry FOURNIERab00df62016-07-14 11:42:37 +02004912 htxn->flags = flags;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004913
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01004914 /* Create the "f" field that contains a list of fetches. */
4915 lua_pushstring(L, "f");
Thierry FOURNIERca988662015-12-20 18:43:03 +01004916 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01004917 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004918 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01004919
4920 /* Create the "sf" field that contains a list of stringsafe fetches. */
4921 lua_pushstring(L, "sf");
Thierry FOURNIERca988662015-12-20 18:43:03 +01004922 if (!hlua_fetches_new(L, htxn, HLUA_F_MAY_USE_HTTP | HLUA_F_AS_STRING))
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01004923 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004924 lua_rawset(L, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01004925
Thierry FOURNIER594afe72015-03-10 23:58:30 +01004926 /* Create the "c" field that contains a list of converters. */
4927 lua_pushstring(L, "c");
Willy Tarreaude491382015-04-06 11:04:28 +02004928 if (!hlua_converters_new(L, htxn, 0))
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01004929 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004930 lua_rawset(L, -3);
Thierry FOURNIER2694a1a2015-03-11 20:13:36 +01004931
4932 /* Create the "sc" field that contains a list of stringsafe converters. */
4933 lua_pushstring(L, "sc");
Thierry FOURNIER7fa05492015-12-20 18:42:25 +01004934 if (!hlua_converters_new(L, htxn, HLUA_F_AS_STRING))
Thierry FOURNIER594afe72015-03-10 23:58:30 +01004935 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004936 lua_rawset(L, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01004937
Thierry FOURNIER397826a2015-03-11 19:39:09 +01004938 /* Create the "req" field that contains the request channel object. */
4939 lua_pushstring(L, "req");
Willy Tarreau2a71af42015-03-10 13:51:50 +01004940 if (!hlua_channel_new(L, &s->req))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01004941 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004942 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01004943
4944 /* Create the "res" field that contains the response channel object. */
4945 lua_pushstring(L, "res");
Willy Tarreau2a71af42015-03-10 13:51:50 +01004946 if (!hlua_channel_new(L, &s->res))
Thierry FOURNIER397826a2015-03-11 19:39:09 +01004947 return 0;
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004948 lua_rawset(L, -3);
Thierry FOURNIER397826a2015-03-11 19:39:09 +01004949
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004950 /* Creates the HTTP object is the current proxy allows http. */
4951 lua_pushstring(L, "http");
4952 if (p->mode == PR_MODE_HTTP) {
Willy Tarreaude491382015-04-06 11:04:28 +02004953 if (!hlua_http_new(L, htxn))
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004954 return 0;
4955 }
4956 else
4957 lua_pushnil(L);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02004958 lua_rawset(L, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01004959
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01004960 /* Pop a class sesison metatable and affect it to the userdata. */
4961 lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref);
4962 lua_setmetatable(L, -2);
4963
4964 return 1;
4965}
4966
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01004967__LJMP static int hlua_txn_deflog(lua_State *L)
4968{
4969 const char *msg;
4970 struct hlua_txn *htxn;
4971
4972 MAY_LJMP(check_args(L, 2, "deflog"));
4973 htxn = MAY_LJMP(hlua_checktxn(L, 1));
4974 msg = MAY_LJMP(luaL_checkstring(L, 2));
4975
4976 hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg);
4977 return 0;
4978}
4979
4980__LJMP static int hlua_txn_log(lua_State *L)
4981{
4982 int level;
4983 const char *msg;
4984 struct hlua_txn *htxn;
4985
4986 MAY_LJMP(check_args(L, 3, "log"));
4987 htxn = MAY_LJMP(hlua_checktxn(L, 1));
4988 level = MAY_LJMP(luaL_checkinteger(L, 2));
4989 msg = MAY_LJMP(luaL_checkstring(L, 3));
4990
4991 if (level < 0 || level >= NB_LOG_LEVELS)
4992 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
4993
4994 hlua_sendlog(htxn->s->be, level, msg);
4995 return 0;
4996}
4997
4998__LJMP static int hlua_txn_log_debug(lua_State *L)
4999{
5000 const char *msg;
5001 struct hlua_txn *htxn;
5002
5003 MAY_LJMP(check_args(L, 2, "Debug"));
5004 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5005 msg = MAY_LJMP(luaL_checkstring(L, 2));
5006 hlua_sendlog(htxn->s->be, LOG_DEBUG, msg);
5007 return 0;
5008}
5009
5010__LJMP static int hlua_txn_log_info(lua_State *L)
5011{
5012 const char *msg;
5013 struct hlua_txn *htxn;
5014
5015 MAY_LJMP(check_args(L, 2, "Info"));
5016 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5017 msg = MAY_LJMP(luaL_checkstring(L, 2));
5018 hlua_sendlog(htxn->s->be, LOG_INFO, msg);
5019 return 0;
5020}
5021
5022__LJMP static int hlua_txn_log_warning(lua_State *L)
5023{
5024 const char *msg;
5025 struct hlua_txn *htxn;
5026
5027 MAY_LJMP(check_args(L, 2, "Warning"));
5028 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5029 msg = MAY_LJMP(luaL_checkstring(L, 2));
5030 hlua_sendlog(htxn->s->be, LOG_WARNING, msg);
5031 return 0;
5032}
5033
5034__LJMP static int hlua_txn_log_alert(lua_State *L)
5035{
5036 const char *msg;
5037 struct hlua_txn *htxn;
5038
5039 MAY_LJMP(check_args(L, 2, "Alert"));
5040 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5041 msg = MAY_LJMP(luaL_checkstring(L, 2));
5042 hlua_sendlog(htxn->s->be, LOG_ALERT, msg);
5043 return 0;
5044}
5045
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005046__LJMP static int hlua_txn_set_loglevel(lua_State *L)
5047{
5048 struct hlua_txn *htxn;
5049 int ll;
5050
5051 MAY_LJMP(check_args(L, 2, "set_loglevel"));
5052 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5053 ll = MAY_LJMP(luaL_checkinteger(L, 2));
5054
5055 if (ll < 0 || ll > 7)
5056 WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
5057
5058 htxn->s->logs.level = ll;
5059 return 0;
5060}
5061
5062__LJMP static int hlua_txn_set_tos(lua_State *L)
5063{
5064 struct hlua_txn *htxn;
5065 struct connection *cli_conn;
5066 int tos;
5067
5068 MAY_LJMP(check_args(L, 2, "set_tos"));
5069 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5070 tos = MAY_LJMP(luaL_checkinteger(L, 2));
5071
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02005072 if ((cli_conn = objt_conn(htxn->s->sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +02005073 inet_set_tos(cli_conn->t.sock.fd, &cli_conn->addr.from, tos);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005074
5075 return 0;
5076}
5077
5078__LJMP static int hlua_txn_set_mark(lua_State *L)
5079{
5080#ifdef SO_MARK
5081 struct hlua_txn *htxn;
5082 struct connection *cli_conn;
5083 int mark;
5084
5085 MAY_LJMP(check_args(L, 2, "set_mark"));
5086 htxn = MAY_LJMP(hlua_checktxn(L, 1));
5087 mark = MAY_LJMP(luaL_checkinteger(L, 2));
5088
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02005089 if ((cli_conn = objt_conn(htxn->s->sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreau07081fe2015-04-06 10:59:20 +02005090 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &mark, sizeof(mark));
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01005091#endif
5092 return 0;
5093}
5094
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005095/* This function is an Lua binding that send pending data
5096 * to the client, and close the stream interface.
5097 */
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005098__LJMP static int hlua_txn_done(lua_State *L)
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005099{
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005100 struct hlua_txn *htxn;
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02005101 struct hlua *hlua;
Willy Tarreau81389672015-03-10 12:03:52 +01005102 struct channel *ic, *oc;
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005103
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005104 MAY_LJMP(check_args(L, 1, "close"));
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005105 htxn = MAY_LJMP(hlua_checktxn(L, 1));
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02005106 hlua = hlua_gethlua(L);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005107
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005108 /* If the flags NOTERM is set, we cannot terminate the http
5109 * session, so we just end the execution of the current
5110 * lua code.
5111 */
5112 if (htxn->flags & HLUA_TXN_NOTERM) {
5113 WILL_LJMP(hlua_done(L));
5114 return 0;
5115 }
5116
Willy Tarreaub2ccb562015-04-06 11:11:15 +02005117 ic = &htxn->s->req;
5118 oc = &htxn->s->res;
Willy Tarreau81389672015-03-10 12:03:52 +01005119
Willy Tarreau630ef452015-08-28 10:06:15 +02005120 if (htxn->s->txn) {
5121 /* HTTP mode, let's stay in sync with the stream */
5122 bi_fast_delete(ic->buf, htxn->s->txn->req.sov);
5123 htxn->s->txn->req.next -= htxn->s->txn->req.sov;
5124 htxn->s->txn->req.sov = 0;
5125 ic->analysers &= AN_REQ_HTTP_XFER_BODY;
5126 oc->analysers = AN_RES_HTTP_XFER_BODY;
5127 htxn->s->txn->req.msg_state = HTTP_MSG_CLOSED;
5128 htxn->s->txn->rsp.msg_state = HTTP_MSG_DONE;
5129
Willy Tarreau630ef452015-08-28 10:06:15 +02005130 /* Note that if we want to support keep-alive, we need
5131 * to bypass the close/shutr_now calls below, but that
5132 * may only be done if the HTTP request was already
5133 * processed and the connection header is known (ie
5134 * not during TCP rules).
5135 */
5136 }
5137
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02005138 channel_auto_read(ic);
Willy Tarreau81389672015-03-10 12:03:52 +01005139 channel_abort(ic);
5140 channel_auto_close(ic);
5141 channel_erase(ic);
Thierry FOURNIER10ec2142015-08-24 17:23:45 +02005142
5143 oc->wex = tick_add_ifset(now_ms, oc->wto);
Willy Tarreau81389672015-03-10 12:03:52 +01005144 channel_auto_read(oc);
5145 channel_auto_close(oc);
5146 channel_shutr_now(oc);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005147
Willy Tarreau0458b082015-08-28 09:40:04 +02005148 ic->analysers = 0;
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005149
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02005150 hlua->flags |= HLUA_STOP;
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02005151 WILL_LJMP(hlua_done(L));
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01005152 return 0;
5153}
5154
5155__LJMP static int hlua_log(lua_State *L)
5156{
5157 int level;
5158 const char *msg;
5159
5160 MAY_LJMP(check_args(L, 2, "log"));
5161 level = MAY_LJMP(luaL_checkinteger(L, 1));
5162 msg = MAY_LJMP(luaL_checkstring(L, 2));
5163
5164 if (level < 0 || level >= NB_LOG_LEVELS)
5165 WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel."));
5166
5167 hlua_sendlog(NULL, level, msg);
5168 return 0;
5169}
5170
5171__LJMP static int hlua_log_debug(lua_State *L)
5172{
5173 const char *msg;
5174
5175 MAY_LJMP(check_args(L, 1, "debug"));
5176 msg = MAY_LJMP(luaL_checkstring(L, 1));
5177 hlua_sendlog(NULL, LOG_DEBUG, msg);
5178 return 0;
5179}
5180
5181__LJMP static int hlua_log_info(lua_State *L)
5182{
5183 const char *msg;
5184
5185 MAY_LJMP(check_args(L, 1, "info"));
5186 msg = MAY_LJMP(luaL_checkstring(L, 1));
5187 hlua_sendlog(NULL, LOG_INFO, msg);
5188 return 0;
5189}
5190
5191__LJMP static int hlua_log_warning(lua_State *L)
5192{
5193 const char *msg;
5194
5195 MAY_LJMP(check_args(L, 1, "warning"));
5196 msg = MAY_LJMP(luaL_checkstring(L, 1));
5197 hlua_sendlog(NULL, LOG_WARNING, msg);
5198 return 0;
5199}
5200
5201__LJMP static int hlua_log_alert(lua_State *L)
5202{
5203 const char *msg;
5204
5205 MAY_LJMP(check_args(L, 1, "alert"));
5206 msg = MAY_LJMP(luaL_checkstring(L, 1));
5207 hlua_sendlog(NULL, LOG_ALERT, msg);
Thierry FOURNIER893bfa32015-02-17 18:42:34 +01005208 return 0;
5209}
5210
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01005211__LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005212{
5213 int wakeup_ms = lua_tointeger(L, -1);
5214 if (now_ms < wakeup_ms)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005215 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005216 return 0;
5217}
5218
5219__LJMP static int hlua_sleep(lua_State *L)
5220{
5221 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005222 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005223
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005224 MAY_LJMP(check_args(L, 1, "sleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005225
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01005226 delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005227 wakeup_ms = tick_add(now_ms, delay);
5228 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005229
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005230 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
5231 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005232}
5233
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005234__LJMP static int hlua_msleep(lua_State *L)
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005235{
5236 unsigned int delay;
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005237 unsigned int wakeup_ms;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005238
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005239 MAY_LJMP(check_args(L, 1, "msleep"));
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005240
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01005241 delay = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005242 wakeup_ms = tick_add(now_ms, delay);
5243 lua_pushinteger(L, wakeup_ms);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005244
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005245 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0));
5246 return 0;
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01005247}
5248
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01005249/* This functionis an LUA binding. it permits to give back
5250 * the hand at the HAProxy scheduler. It is used when the
5251 * LUA processing consumes a lot of time.
5252 */
Thierry FOURNIERf90838b2015-03-06 13:48:32 +01005253__LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx)
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005254{
5255 return 0;
5256}
5257
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01005258__LJMP static int hlua_yield(lua_State *L)
5259{
Thierry FOURNIERd44731f2015-03-04 15:51:09 +01005260 WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD));
5261 return 0;
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01005262}
5263
Thierry FOURNIER37196f42015-02-16 19:34:56 +01005264/* This function change the nice of the currently executed
5265 * task. It is used set low or high priority at the current
5266 * task.
5267 */
Willy Tarreau59551662015-03-10 14:23:13 +01005268__LJMP static int hlua_set_nice(lua_State *L)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01005269{
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005270 struct hlua *hlua;
5271 int nice;
Thierry FOURNIER37196f42015-02-16 19:34:56 +01005272
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005273 MAY_LJMP(check_args(L, 1, "set_nice"));
5274 hlua = hlua_gethlua(L);
5275 nice = MAY_LJMP(luaL_checkinteger(L, 1));
Thierry FOURNIER37196f42015-02-16 19:34:56 +01005276
5277 /* If he task is not set, I'm in a start mode. */
5278 if (!hlua || !hlua->task)
5279 return 0;
5280
5281 if (nice < -1024)
5282 nice = -1024;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01005283 else if (nice > 1024)
Thierry FOURNIER37196f42015-02-16 19:34:56 +01005284 nice = 1024;
5285
5286 hlua->task->nice = nice;
5287 return 0;
5288}
5289
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005290/* This function is used as a calback of a task. It is called by the
5291 * HAProxy task subsystem when the task is awaked. The LUA runtime can
5292 * return an E_AGAIN signal, the emmiter of this signal must set a
5293 * signal to wake the task.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005294 *
5295 * Task wrapper are longjmp safe because the only one Lua code
5296 * executed is the safe hlua_ctx_resume();
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005297 */
5298static struct task *hlua_process_task(struct task *task)
5299{
5300 struct hlua *hlua = task->context;
5301 enum hlua_exec status;
5302
5303 /* We need to remove the task from the wait queue before executing
5304 * the Lua code because we don't know if it needs to wait for
5305 * another timer or not in the case of E_AGAIN.
5306 */
5307 task_delete(task);
5308
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005309 /* If it is the first call to the task, we must initialize the
5310 * execution timeouts.
5311 */
5312 if (!HLUA_IS_RUNNING(hlua))
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02005313 hlua->max_time = hlua_timeout_task;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005314
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005315 /* Execute the Lua code. */
5316 status = hlua_ctx_resume(hlua, 1);
5317
5318 switch (status) {
5319 /* finished or yield */
5320 case HLUA_E_OK:
5321 hlua_ctx_destroy(hlua);
5322 task_delete(task);
5323 task_free(task);
5324 break;
5325
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01005326 case HLUA_E_AGAIN: /* co process or timeout wake me later. */
5327 if (hlua->wake_time != TICK_ETERNITY)
5328 task_schedule(task, hlua->wake_time);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005329 break;
5330
5331 /* finished with error. */
5332 case HLUA_E_ERRMSG:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005333 SEND_ERR(NULL, "Lua task: %s.\n", lua_tostring(hlua->T, -1));
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005334 hlua_ctx_destroy(hlua);
5335 task_delete(task);
5336 task_free(task);
5337 break;
5338
5339 case HLUA_E_ERR:
5340 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005341 SEND_ERR(NULL, "Lua task: unknown error.\n");
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005342 hlua_ctx_destroy(hlua);
5343 task_delete(task);
5344 task_free(task);
5345 break;
5346 }
5347 return NULL;
5348}
5349
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01005350/* This function is an LUA binding that register LUA function to be
5351 * executed after the HAProxy configuration parsing and before the
5352 * HAProxy scheduler starts. This function expect only one LUA
5353 * argument that is a function. This function returns nothing, but
5354 * throws if an error is encountered.
5355 */
5356__LJMP static int hlua_register_init(lua_State *L)
5357{
5358 struct hlua_init_function *init;
5359 int ref;
5360
5361 MAY_LJMP(check_args(L, 1, "register_init"));
5362
5363 ref = MAY_LJMP(hlua_checkfunction(L, 1));
5364
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005365 init = calloc(1, sizeof(*init));
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01005366 if (!init)
5367 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5368
5369 init->function_ref = ref;
5370 LIST_ADDQ(&hlua_init_functions, &init->l);
5371 return 0;
5372}
5373
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005374/* This functio is an LUA binding. It permits to register a task
5375 * executed in parallel of the main HAroxy activity. The task is
5376 * created and it is set in the HAProxy scheduler. It can be called
5377 * from the "init" section, "post init" or during the runtime.
5378 *
5379 * Lua prototype:
5380 *
5381 * <none> core.register_task(<function>)
5382 */
5383static int hlua_register_task(lua_State *L)
5384{
5385 struct hlua *hlua;
5386 struct task *task;
5387 int ref;
5388
5389 MAY_LJMP(check_args(L, 1, "register_task"));
5390
5391 ref = MAY_LJMP(hlua_checkfunction(L, 1));
5392
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005393 hlua = pool_alloc2(pool2_hlua);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01005394 if (!hlua)
5395 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5396
5397 task = task_new();
5398 task->context = hlua;
5399 task->process = hlua_process_task;
5400
5401 if (!hlua_ctx_init(hlua, task))
5402 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5403
5404 /* Restore the function in the stack. */
5405 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref);
5406 hlua->nargs = 0;
5407
5408 /* Schedule task. */
5409 task_schedule(task, now_ms);
5410
5411 return 0;
5412}
5413
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005414/* Wrapper called by HAProxy to execute an LUA converter. This wrapper
5415 * doesn't allow "yield" functions because the HAProxy engine cannot
5416 * resume converters.
5417 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02005418static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005419{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005420 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02005421 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01005422 const char *error;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005423
Willy Tarreaube508f12016-03-10 11:47:01 +01005424 if (!stream)
5425 return 0;
5426
Willy Tarreau87b09662015-04-03 00:22:06 +02005427 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01005428 * Lua context can be not initialized. This behavior
5429 * permits to save performances because a systematic
5430 * Lua initialization cause 5% performances loss.
5431 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005432 if (!stream->hlua) {
5433 stream->hlua = pool_alloc2(pool2_hlua);
5434 if (!stream->hlua) {
5435 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
5436 return 0;
5437 }
5438 if (!hlua_ctx_init(stream->hlua, stream->task)) {
5439 SEND_ERR(stream->be, "Lua converter '%s': can't initialize Lua context.\n", fcn->name);
5440 return 0;
5441 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01005442 }
5443
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005444 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005445 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005446
5447 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005448 if (!SET_SAFE_LJMP(stream->hlua->T)) {
5449 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
5450 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01005451 else
5452 error = "critical error";
5453 SEND_ERR(stream->be, "Lua converter '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005454 return 0;
5455 }
5456
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005457 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005458 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005459 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005460 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005461 return 0;
5462 }
5463
5464 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005465 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005466
5467 /* convert input sample and pust-it in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005468 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005469 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005470 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005471 return 0;
5472 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005473 hlua_smp2lua(stream->hlua->T, smp);
5474 stream->hlua->nargs = 1;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005475
5476 /* push keywords in the stack. */
5477 if (arg_p) {
5478 for (; arg_p->type != ARGT_STOP; arg_p++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005479 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005480 SEND_ERR(stream->be, "Lua converter '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005481 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005482 return 0;
5483 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005484 hlua_arg2lua(stream->hlua->T, arg_p);
5485 stream->hlua->nargs++;
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005486 }
5487 }
5488
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005489 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005490 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005491
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005492 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005493 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005494 }
5495
5496 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005497 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005498 /* finished. */
5499 case HLUA_E_OK:
5500 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005501 hlua_lua2smp(stream->hlua->T, -1, smp);
5502 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005503 return 1;
5504
5505 /* yield. */
5506 case HLUA_E_AGAIN:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005507 SEND_ERR(stream->be, "Lua converter '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005508 return 0;
5509
5510 /* finished with error. */
5511 case HLUA_E_ERRMSG:
5512 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005513 SEND_ERR(stream->be, "Lua converter '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005514 fcn->name, lua_tostring(stream->hlua->T, -1));
5515 lua_pop(stream->hlua->T, 1);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005516 return 0;
5517
5518 case HLUA_E_ERR:
5519 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005520 SEND_ERR(stream->be, "Lua converter '%s' returns an unknown error.\n", fcn->name);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005521
5522 default:
5523 return 0;
5524 }
5525}
5526
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005527/* Wrapper called by HAProxy to execute a sample-fetch. this wrapper
5528 * doesn't allow "yield" functions because the HAProxy engine cannot
Willy Tarreaube508f12016-03-10 11:47:01 +01005529 * resume sample-fetches. This function will be called by the sample
5530 * fetch engine to call lua-based fetch operations.
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005531 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +02005532static int hlua_sample_fetch_wrapper(const struct arg *arg_p, struct sample *smp,
5533 const char *kw, void *private)
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005534{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02005535 struct hlua_function *fcn = private;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02005536 struct stream *stream = smp->strm;
Thierry Fournierfd107a22016-02-19 19:57:23 +01005537 const char *error;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005538 const struct chunk msg = { .len = 0 };
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005539
Willy Tarreaube508f12016-03-10 11:47:01 +01005540 if (!stream)
5541 return 0;
5542
Willy Tarreau87b09662015-04-03 00:22:06 +02005543 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01005544 * Lua context can be not initialized. This behavior
5545 * permits to save performances because a systematic
5546 * Lua initialization cause 5% performances loss.
5547 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005548 if (!stream->hlua) {
5549 stream->hlua = pool_alloc2(pool2_hlua);
5550 if (!stream->hlua) {
5551 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
5552 return 0;
5553 }
5554 if (!hlua_ctx_init(stream->hlua, stream->task)) {
5555 SEND_ERR(stream->be, "Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name);
5556 return 0;
5557 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01005558 }
5559
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005560 consistency_set(stream, smp->opt, &stream->hlua->cons);
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005561
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005562 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005563 if (!HLUA_IS_RUNNING(stream->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005564
5565 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005566 if (!SET_SAFE_LJMP(stream->hlua->T)) {
5567 if (lua_type(stream->hlua->T, -1) == LUA_TSTRING)
5568 error = lua_tostring(stream->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01005569 else
5570 error = "critical error";
5571 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n", fcn->name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005572 return 0;
5573 }
5574
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005575 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005576 if (!lua_checkstack(stream->hlua->T, 2)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005577 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005578 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005579 return 0;
5580 }
5581
5582 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005583 lua_rawgeti(stream->hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005584
5585 /* push arguments in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005586 if (!hlua_txn_new(stream->hlua->T, stream, smp->px, smp->opt & SMP_OPT_DIR,
Thierry FOURNIERab00df62016-07-14 11:42:37 +02005587 HLUA_TXN_NOTERM)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005588 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005589 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005590 return 0;
5591 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005592 stream->hlua->nargs = 1;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005593
5594 /* push keywords in the stack. */
5595 for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) {
5596 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005597 if (!lua_checkstack(stream->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005598 SEND_ERR(smp->px, "Lua sample-fetch '%s': full stack.\n", fcn->name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005599 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005600 return 0;
5601 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005602 hlua_arg2lua(stream->hlua->T, arg_p);
5603 stream->hlua->nargs++;
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005604 }
5605
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005606 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005607 stream->hlua->max_time = hlua_timeout_session;
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005608
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005609 /* At this point the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005610 RESET_SAFE_LJMP(stream->hlua->T);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005611 }
5612
5613 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005614 switch (hlua_ctx_resume(stream->hlua, 0)) {
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005615 /* finished. */
5616 case HLUA_E_OK:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005617 if (!consistency_check(stream, smp->opt, &stream->hlua->cons)) {
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005618 stream_int_retnclose(&stream->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02005619 return 0;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005620 }
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005621 /* Convert the returned value in sample. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005622 hlua_lua2smp(stream->hlua->T, -1, smp);
5623 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005624
5625 /* Set the end of execution flag. */
5626 smp->flags &= ~SMP_F_MAY_CHANGE;
5627 return 1;
5628
5629 /* yield. */
5630 case HLUA_E_AGAIN:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005631 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005632 stream_int_retnclose(&stream->si[0], &msg);
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005633 SEND_ERR(smp->px, "Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005634 return 0;
5635
5636 /* finished with error. */
5637 case HLUA_E_ERRMSG:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005638 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005639 stream_int_retnclose(&stream->si[0], &msg);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005640 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005641 SEND_ERR(smp->px, "Lua sample-fetch '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005642 fcn->name, lua_tostring(stream->hlua->T, -1));
5643 lua_pop(stream->hlua->T, 1);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005644 return 0;
5645
5646 case HLUA_E_ERR:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005647 if (!consistency_check(stream, smp->opt, &stream->hlua->cons))
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005648 stream_int_retnclose(&stream->si[0], &msg);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005649 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005650 SEND_ERR(smp->px, "Lua sample-fetch '%s' returns an unknown error.\n", fcn->name);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005651
5652 default:
5653 return 0;
5654 }
5655}
5656
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005657/* This function is an LUA binding used for registering
5658 * "sample-conv" functions. It expects a converter name used
5659 * in the haproxy configuration file, and an LUA function.
5660 */
5661__LJMP static int hlua_register_converters(lua_State *L)
5662{
5663 struct sample_conv_kw_list *sck;
5664 const char *name;
5665 int ref;
5666 int len;
5667 struct hlua_function *fcn;
5668
5669 MAY_LJMP(check_args(L, 2, "register_converters"));
5670
5671 /* First argument : converter name. */
5672 name = MAY_LJMP(luaL_checkstring(L, 1));
5673
5674 /* Second argument : lua function. */
5675 ref = MAY_LJMP(hlua_checkfunction(L, 2));
5676
5677 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005678 sck = calloc(1, sizeof(*sck) + sizeof(struct sample_conv) * 2);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005679 if (!sck)
5680 WILL_LJMP(luaL_error(L, "lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005681 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005682 if (!fcn)
5683 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5684
5685 /* Fill fcn. */
5686 fcn->name = strdup(name);
5687 if (!fcn->name)
5688 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5689 fcn->function_ref = ref;
5690
5691 /* List head */
5692 sck->list.n = sck->list.p = NULL;
5693
5694 /* converter keyword. */
5695 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005696 sck->kw[0].kw = calloc(1, len);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005697 if (!sck->kw[0].kw)
5698 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5699
5700 snprintf((char *)sck->kw[0].kw, len, "lua.%s", name);
5701 sck->kw[0].process = hlua_sample_conv_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01005702 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 +01005703 sck->kw[0].val_args = NULL;
5704 sck->kw[0].in_type = SMP_T_STR;
5705 sck->kw[0].out_type = SMP_T_STR;
5706 sck->kw[0].private = fcn;
5707
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01005708 /* Register this new converter */
5709 sample_register_convs(sck);
5710
5711 return 0;
5712}
5713
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005714/* This fucntion is an LUA binding used for registering
5715 * "sample-fetch" functions. It expects a converter name used
5716 * in the haproxy configuration file, and an LUA function.
5717 */
5718__LJMP static int hlua_register_fetches(lua_State *L)
5719{
5720 const char *name;
5721 int ref;
5722 int len;
5723 struct sample_fetch_kw_list *sfk;
5724 struct hlua_function *fcn;
5725
5726 MAY_LJMP(check_args(L, 2, "register_fetches"));
5727
5728 /* First argument : sample-fetch name. */
5729 name = MAY_LJMP(luaL_checkstring(L, 1));
5730
5731 /* Second argument : lua function. */
5732 ref = MAY_LJMP(hlua_checkfunction(L, 2));
5733
5734 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005735 sfk = calloc(1, sizeof(*sfk) + sizeof(struct sample_fetch) * 2);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005736 if (!sfk)
5737 WILL_LJMP(luaL_error(L, "lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005738 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005739 if (!fcn)
5740 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5741
5742 /* Fill fcn. */
5743 fcn->name = strdup(name);
5744 if (!fcn->name)
5745 WILL_LJMP(luaL_error(L, "lua out of memory error."));
5746 fcn->function_ref = ref;
5747
5748 /* List head */
5749 sfk->list.n = sfk->list.p = NULL;
5750
5751 /* sample-fetch keyword. */
5752 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02005753 sfk->kw[0].kw = calloc(1, len);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005754 if (!sfk->kw[0].kw)
5755 return luaL_error(L, "lua out of memory error.");
5756
5757 snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name);
5758 sfk->kw[0].process = hlua_sample_fetch_wrapper;
David Carlier0c437f42016-04-27 16:21:56 +01005759 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 +01005760 sfk->kw[0].val_args = NULL;
5761 sfk->kw[0].out_type = SMP_T_STR;
5762 sfk->kw[0].use = SMP_USE_HTTP_ANY;
5763 sfk->kw[0].val = 0;
5764 sfk->kw[0].private = fcn;
5765
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01005766 /* Register this new fetch. */
5767 sample_register_fetches(sfk);
5768
5769 return 0;
5770}
5771
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005772/* This function is a wrapper to execute each LUA function declared
5773 * as an action wrapper during the initialisation period. This function
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005774 * return ACT_RET_CONT if the processing is finished (with or without
5775 * error) and return ACT_RET_YIELD if the function must be called again
5776 * because the LUA returns a yield.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005777 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005778static enum act_return hlua_action(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +02005779 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005780{
5781 char **arg;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005782 unsigned int analyzer;
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02005783 int dir;
Thierry Fournierfd107a22016-02-19 19:57:23 +01005784 const char *error;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005785 const struct chunk msg = { .len = 0 };
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005786
5787 switch (rule->from) {
Thierry FOURNIER6e01f382015-11-02 09:52:54 +01005788 case ACT_F_TCP_REQ_CNT: analyzer = AN_REQ_INSPECT_FE ; dir = SMP_OPT_DIR_REQ; break;
5789 case ACT_F_TCP_RES_CNT: analyzer = AN_RES_INSPECT ; dir = SMP_OPT_DIR_RES; break;
5790 case ACT_F_HTTP_REQ: analyzer = AN_REQ_HTTP_PROCESS_FE; dir = SMP_OPT_DIR_REQ; break;
5791 case ACT_F_HTTP_RES: analyzer = AN_RES_HTTP_PROCESS_BE; dir = SMP_OPT_DIR_RES; break;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005792 default:
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005793 SEND_ERR(px, "Lua: internal error while execute action.\n");
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005794 return ACT_RET_CONT;
5795 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005796
Willy Tarreau87b09662015-04-03 00:22:06 +02005797 /* In the execution wrappers linked with a stream, the
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01005798 * Lua context can be not initialized. This behavior
5799 * permits to save performances because a systematic
5800 * Lua initialization cause 5% performances loss.
5801 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005802 if (!s->hlua) {
5803 s->hlua = pool_alloc2(pool2_hlua);
5804 if (!s->hlua) {
5805 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
5806 rule->arg.hlua_rule->fcn.name);
5807 return ACT_RET_CONT;
5808 }
5809 if (!hlua_ctx_init(s->hlua, s->task)) {
5810 SEND_ERR(px, "Lua action '%s': can't initialize Lua context.\n",
5811 rule->arg.hlua_rule->fcn.name);
5812 return ACT_RET_CONT;
5813 }
Thierry FOURNIER05ac4242015-02-27 18:37:27 +01005814 }
5815
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005816 consistency_set(s, dir, &s->hlua->cons);
5817
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005818 /* If it is the first run, initialize the data for the call. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005819 if (!HLUA_IS_RUNNING(s->hlua)) {
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005820
5821 /* The following Lua calls can fail. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005822 if (!SET_SAFE_LJMP(s->hlua->T)) {
5823 if (lua_type(s->hlua->T, -1) == LUA_TSTRING)
5824 error = lua_tostring(s->hlua->T, -1);
Thierry Fournierfd107a22016-02-19 19:57:23 +01005825 else
5826 error = "critical error";
5827 SEND_ERR(px, "Lua function '%s': %s.\n",
5828 rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005829 return ACT_RET_CONT;
5830 }
5831
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005832 /* Check stack available size. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005833 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005834 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005835 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005836 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005837 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005838 }
5839
5840 /* Restore the function in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005841 lua_rawgeti(s->hlua->T, LUA_REGISTRYINDEX, rule->arg.hlua_rule->fcn.function_ref);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005842
Willy Tarreau87b09662015-04-03 00:22:06 +02005843 /* Create and and push object stream in the stack. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005844 if (!hlua_txn_new(s->hlua->T, s, px, dir, 0)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005845 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005846 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005847 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005848 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005849 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005850 s->hlua->nargs = 1;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005851
5852 /* push keywords in the stack. */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005853 for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005854 if (!lua_checkstack(s->hlua->T, 1)) {
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005855 SEND_ERR(px, "Lua function '%s': full stack.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005856 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005857 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005858 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005859 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005860 lua_pushstring(s->hlua->T, *arg);
5861 s->hlua->nargs++;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005862 }
5863
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005864 /* Now the execution is safe. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005865 RESET_SAFE_LJMP(s->hlua->T);
Thierry FOURNIERbabae282015-09-17 11:36:37 +02005866
Thierry FOURNIERbd413492015-03-03 16:52:26 +01005867 /* We must initialize the execution timeouts. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005868 s->hlua->max_time = hlua_timeout_session;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005869 }
5870
5871 /* Execute the function. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005872 switch (hlua_ctx_resume(s->hlua, !(flags & ACT_FLAG_FINAL))) {
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005873 /* finished. */
5874 case HLUA_E_OK:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005875 if (!consistency_check(s, dir, &s->hlua->cons)) {
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005876 stream_int_retnclose(&s->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02005877 return ACT_RET_ERR;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005878 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005879 if (s->hlua->flags & HLUA_STOP)
Thierry FOURNIER9bd52d42016-07-14 11:45:33 +02005880 return ACT_RET_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005881 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005882
5883 /* yield. */
5884 case HLUA_E_AGAIN:
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01005885 /* Set timeout in the required channel. */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005886 if (s->hlua->wake_time != TICK_ETERNITY) {
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01005887 if (analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE))
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005888 s->req.analyse_exp = s->hlua->wake_time;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01005889 else if (analyzer & (AN_RES_INSPECT|AN_RES_HTTP_PROCESS_BE))
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005890 s->res.analyse_exp = s->hlua->wake_time;
Thierry FOURNIERc42c1ae2015-03-03 17:17:55 +01005891 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005892 /* Some actions can be wake up when a "write" event
5893 * is detected on a response channel. This is useful
5894 * only for actions targetted on the requests.
5895 */
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005896 if (HLUA_IS_WAKERESWR(s->hlua)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01005897 s->res.flags |= CF_WAKE_WRITE;
Willy Tarreau76bd97f2015-03-10 17:16:10 +01005898 if ((analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE)))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01005899 s->res.analysers |= analyzer;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005900 }
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005901 if (HLUA_IS_WAKEREQWR(s->hlua))
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01005902 s->req.flags |= CF_WAKE_WRITE;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005903 /* We can quit the fcuntion without consistency check
5904 * because HAProxy is not able to manipulate data, it
5905 * is only allowed to call me again. */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005906 return ACT_RET_YIELD;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005907
5908 /* finished with error. */
5909 case HLUA_E_ERRMSG:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005910 if (!consistency_check(s, dir, &s->hlua->cons)) {
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005911 stream_int_retnclose(&s->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02005912 return ACT_RET_ERR;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005913 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005914 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005915 SEND_ERR(px, "Lua function '%s': %s.\n",
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005916 rule->arg.hlua_rule->fcn.name, lua_tostring(s->hlua->T, -1));
5917 lua_pop(s->hlua->T, 1);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005918 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005919
5920 case HLUA_E_ERR:
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +01005921 if (!consistency_check(s, dir, &s->hlua->cons)) {
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005922 stream_int_retnclose(&s->si[0], &msg);
Thierry FOURNIERd75cb0f2015-09-25 19:22:44 +02005923 return ACT_RET_ERR;
Thierry FOURNIER11cfb3d2016-12-13 13:06:23 +01005924 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005925 /* Display log. */
Thierry FOURNIER23bc3752015-09-11 19:15:43 +02005926 SEND_ERR(px, "Lua function '%s' return an unknown error.\n",
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02005927 rule->arg.hlua_rule->fcn.name);
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005928
5929 default:
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02005930 return ACT_RET_CONT;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01005931 }
5932}
5933
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02005934struct task *hlua_applet_wakeup(struct task *t)
5935{
5936 struct appctx *ctx = t->context;
5937 struct stream_interface *si = ctx->owner;
5938
5939 /* If the applet is wake up without any expected work, the sheduler
5940 * remove it from the run queue. This flag indicate that the applet
5941 * is waiting for write. If the buffer is full, the main processing
5942 * will send some data and after call the applet, otherwise it call
5943 * the applet ASAP.
5944 */
5945 si_applet_cant_put(si);
5946 appctx_wakeup(ctx);
5947 return NULL;
5948}
5949
5950static int hlua_applet_tcp_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
5951{
5952 struct stream_interface *si = ctx->owner;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01005953 struct hlua *hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02005954 struct task *task;
5955 char **arg;
Thierry Fournierfd107a22016-02-19 19:57:23 +01005956 const char *error;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02005957
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01005958 hlua = pool_alloc2(pool2_hlua);
5959 if (!hlua) {
5960 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
5961 ctx->rule->arg.hlua_rule->fcn.name);
5962 return 0;
5963 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02005964 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01005965 ctx->ctx.hlua_apptcp.hlua = hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02005966 ctx->ctx.hlua_apptcp.flags = 0;
5967
5968 /* Create task used by signal to wakeup applets. */
5969 task = task_new();
5970 if (!task) {
5971 SEND_ERR(px, "Lua applet tcp '%s': out of memory.\n",
5972 ctx->rule->arg.hlua_rule->fcn.name);
5973 return 0;
5974 }
5975 task->nice = 0;
5976 task->context = ctx;
5977 task->process = hlua_applet_wakeup;
5978 ctx->ctx.hlua_apptcp.task = task;
5979
5980 /* In the execution wrappers linked with a stream, the
5981 * Lua context can be not initialized. This behavior
5982 * permits to save performances because a systematic
5983 * Lua initialization cause 5% performances loss.
5984 */
5985 if (!hlua_ctx_init(hlua, task)) {
5986 SEND_ERR(px, "Lua applet tcp '%s': can't initialize Lua context.\n",
5987 ctx->rule->arg.hlua_rule->fcn.name);
5988 return 0;
5989 }
5990
5991 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02005992 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02005993
5994 /* The following Lua calls can fail. */
5995 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01005996 if (lua_type(hlua->T, -1) == LUA_TSTRING)
5997 error = lua_tostring(hlua->T, -1);
5998 else
5999 error = "critical error";
6000 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
6001 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006002 RESET_SAFE_LJMP(hlua->T);
6003 return 0;
6004 }
6005
6006 /* Check stack available size. */
6007 if (!lua_checkstack(hlua->T, 1)) {
6008 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6009 ctx->rule->arg.hlua_rule->fcn.name);
6010 RESET_SAFE_LJMP(hlua->T);
6011 return 0;
6012 }
6013
6014 /* Restore the function in the stack. */
6015 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
6016
6017 /* Create and and push object stream in the stack. */
6018 if (!hlua_applet_tcp_new(hlua->T, ctx)) {
6019 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6020 ctx->rule->arg.hlua_rule->fcn.name);
6021 RESET_SAFE_LJMP(hlua->T);
6022 return 0;
6023 }
6024 hlua->nargs = 1;
6025
6026 /* push keywords in the stack. */
6027 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
6028 if (!lua_checkstack(hlua->T, 1)) {
6029 SEND_ERR(px, "Lua applet tcp '%s': full stack.\n",
6030 ctx->rule->arg.hlua_rule->fcn.name);
6031 RESET_SAFE_LJMP(hlua->T);
6032 return 0;
6033 }
6034 lua_pushstring(hlua->T, *arg);
6035 hlua->nargs++;
6036 }
6037
6038 RESET_SAFE_LJMP(hlua->T);
6039
6040 /* Wakeup the applet ASAP. */
6041 si_applet_cant_get(si);
6042 si_applet_cant_put(si);
6043
6044 return 1;
6045}
6046
6047static void hlua_applet_tcp_fct(struct appctx *ctx)
6048{
6049 struct stream_interface *si = ctx->owner;
6050 struct stream *strm = si_strm(si);
6051 struct channel *res = si_ic(si);
6052 struct act_rule *rule = ctx->rule;
6053 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006054 struct hlua *hlua = ctx->ctx.hlua_apptcp.hlua;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006055
6056 /* The applet execution is already done. */
6057 if (ctx->ctx.hlua_apptcp.flags & APPLET_DONE)
6058 return;
6059
6060 /* If the stream is disconnect or closed, ldo nothing. */
6061 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
6062 return;
6063
6064 /* Execute the function. */
6065 switch (hlua_ctx_resume(hlua, 1)) {
6066 /* finished. */
6067 case HLUA_E_OK:
6068 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
6069
6070 /* log time */
6071 strm->logs.tv_request = now;
6072
6073 /* eat the whole request */
6074 bo_skip(si_oc(si), si_ob(si)->o);
6075 res->flags |= CF_READ_NULL;
6076 si_shutr(si);
6077 return;
6078
6079 /* yield. */
6080 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01006081 if (hlua->wake_time != TICK_ETERNITY)
6082 task_schedule(ctx->ctx.hlua_apptcp.task, hlua->wake_time);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006083 return;
6084
6085 /* finished with error. */
6086 case HLUA_E_ERRMSG:
6087 /* Display log. */
6088 SEND_ERR(px, "Lua applet tcp '%s': %s.\n",
6089 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
6090 lua_pop(hlua->T, 1);
6091 goto error;
6092
6093 case HLUA_E_ERR:
6094 /* Display log. */
6095 SEND_ERR(px, "Lua applet tcp '%s' return an unknown error.\n",
6096 rule->arg.hlua_rule->fcn.name);
6097 goto error;
6098
6099 default:
6100 goto error;
6101 }
6102
6103error:
6104
6105 /* For all other cases, just close the stream. */
6106 si_shutw(si);
6107 si_shutr(si);
6108 ctx->ctx.hlua_apptcp.flags |= APPLET_DONE;
6109}
6110
6111static void hlua_applet_tcp_release(struct appctx *ctx)
6112{
6113 task_free(ctx->ctx.hlua_apptcp.task);
6114 ctx->ctx.hlua_apptcp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006115 hlua_ctx_destroy(ctx->ctx.hlua_apptcp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006116 ctx->ctx.hlua_apptcp.hlua = NULL;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006117}
6118
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006119/* The function returns 1 if the initialisation is complete, 0 if
6120 * an errors occurs and -1 if more data are required for initializing
6121 * the applet.
6122 */
6123static int hlua_applet_http_init(struct appctx *ctx, struct proxy *px, struct stream *strm)
6124{
6125 struct stream_interface *si = ctx->owner;
6126 struct channel *req = si_oc(si);
6127 struct http_msg *msg;
6128 struct http_txn *txn;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006129 struct hlua *hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006130 char **arg;
6131 struct hdr_ctx hdr;
6132 struct task *task;
6133 struct sample smp; /* just used for a valid call to smp_prefetch_http. */
Thierry Fournierfd107a22016-02-19 19:57:23 +01006134 const char *error;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006135
6136 /* Wait for a full HTTP request. */
6137 if (!smp_prefetch_http(px, strm, 0, NULL, &smp, 0)) {
6138 if (smp.flags & SMP_F_MAY_CHANGE)
6139 return -1;
6140 return 0;
6141 }
6142 txn = strm->txn;
6143 msg = &txn->req;
6144
Willy Tarreau0078bfc2015-10-07 20:20:28 +02006145 /* We want two things in HTTP mode :
6146 * - enforce server-close mode if we were in keep-alive, so that the
6147 * applet is released after each response ;
6148 * - enable request body transfer to the applet in order to resync
6149 * with the response body.
6150 */
6151 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)
6152 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreau0078bfc2015-10-07 20:20:28 +02006153
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006154 hlua = pool_alloc2(pool2_hlua);
6155 if (!hlua) {
6156 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
6157 ctx->rule->arg.hlua_rule->fcn.name);
6158 return 0;
6159 }
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006160 HLUA_INIT(hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006161 ctx->ctx.hlua_apphttp.hlua = hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006162 ctx->ctx.hlua_apphttp.left_bytes = -1;
6163 ctx->ctx.hlua_apphttp.flags = 0;
6164
Thierry FOURNIERd93ea2b2015-12-20 19:14:52 +01006165 if (txn->req.flags & HTTP_MSGF_VER_11)
6166 ctx->ctx.hlua_apphttp.flags |= APPLET_HTTP11;
6167
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006168 /* Create task used by signal to wakeup applets. */
6169 task = task_new();
6170 if (!task) {
6171 SEND_ERR(px, "Lua applet http '%s': out of memory.\n",
6172 ctx->rule->arg.hlua_rule->fcn.name);
6173 return 0;
6174 }
6175 task->nice = 0;
6176 task->context = ctx;
6177 task->process = hlua_applet_wakeup;
6178 ctx->ctx.hlua_apphttp.task = task;
6179
6180 /* In the execution wrappers linked with a stream, the
6181 * Lua context can be not initialized. This behavior
6182 * permits to save performances because a systematic
6183 * Lua initialization cause 5% performances loss.
6184 */
6185 if (!hlua_ctx_init(hlua, task)) {
6186 SEND_ERR(px, "Lua applet http '%s': can't initialize Lua context.\n",
6187 ctx->rule->arg.hlua_rule->fcn.name);
6188 return 0;
6189 }
6190
6191 /* Set timeout according with the applet configuration. */
Thierry FOURNIER10770fa2015-09-29 01:59:42 +02006192 hlua->max_time = ctx->applet->timeout;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006193
6194 /* The following Lua calls can fail. */
6195 if (!SET_SAFE_LJMP(hlua->T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01006196 if (lua_type(hlua->T, -1) == LUA_TSTRING)
6197 error = lua_tostring(hlua->T, -1);
6198 else
6199 error = "critical error";
6200 SEND_ERR(px, "Lua applet http '%s': %s.\n",
6201 ctx->rule->arg.hlua_rule->fcn.name, error);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006202 return 0;
6203 }
6204
6205 /* Check stack available size. */
6206 if (!lua_checkstack(hlua->T, 1)) {
6207 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
6208 ctx->rule->arg.hlua_rule->fcn.name);
6209 RESET_SAFE_LJMP(hlua->T);
6210 return 0;
6211 }
6212
6213 /* Restore the function in the stack. */
6214 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ctx->rule->arg.hlua_rule->fcn.function_ref);
6215
6216 /* Create and and push object stream in the stack. */
6217 if (!hlua_applet_http_new(hlua->T, ctx)) {
6218 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
6219 ctx->rule->arg.hlua_rule->fcn.name);
6220 RESET_SAFE_LJMP(hlua->T);
6221 return 0;
6222 }
6223 hlua->nargs = 1;
6224
6225 /* Look for a 100-continue expected. */
6226 if (msg->flags & HTTP_MSGF_VER_11) {
6227 hdr.idx = 0;
6228 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &hdr) &&
6229 unlikely(hdr.vlen == 12 && strncasecmp(hdr.line+hdr.val, "100-continue", 12) == 0))
6230 ctx->ctx.hlua_apphttp.flags |= APPLET_100C;
6231 }
6232
6233 /* push keywords in the stack. */
6234 for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
6235 if (!lua_checkstack(hlua->T, 1)) {
6236 SEND_ERR(px, "Lua applet http '%s': full stack.\n",
6237 ctx->rule->arg.hlua_rule->fcn.name);
6238 RESET_SAFE_LJMP(hlua->T);
6239 return 0;
6240 }
6241 lua_pushstring(hlua->T, *arg);
6242 hlua->nargs++;
6243 }
6244
6245 RESET_SAFE_LJMP(hlua->T);
6246
6247 /* Wakeup the applet when data is ready for read. */
6248 si_applet_cant_get(si);
6249
6250 return 1;
6251}
6252
6253static void hlua_applet_http_fct(struct appctx *ctx)
6254{
6255 struct stream_interface *si = ctx->owner;
6256 struct stream *strm = si_strm(si);
6257 struct channel *res = si_ic(si);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006258 struct act_rule *rule = ctx->rule;
6259 struct proxy *px = strm->be;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006260 struct hlua *hlua = ctx->ctx.hlua_apphttp.hlua;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006261 char *blk1;
6262 int len1;
6263 char *blk2;
6264 int len2;
6265 int ret;
6266
6267 /* If the stream is disconnect or closed, ldo nothing. */
6268 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
6269 return;
6270
6271 /* Set the currently running flag. */
6272 if (!HLUA_IS_RUNNING(hlua) &&
6273 !(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
6274
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006275 /* Wait for full HTTP analysys. */
6276 if (unlikely(strm->txn->req.msg_state < HTTP_MSG_BODY)) {
6277 si_applet_cant_get(si);
6278 return;
6279 }
6280
6281 /* Store the max amount of bytes that we can read. */
6282 ctx->ctx.hlua_apphttp.left_bytes = strm->txn->req.body_len;
6283
6284 /* We need to flush the request header. This left the body
6285 * for the Lua.
6286 */
6287
6288 /* Read the maximum amount of data avalaible. */
6289 ret = bo_getblk_nc(si_oc(si), &blk1, &len1, &blk2, &len2);
6290 if (ret == -1)
6291 return;
6292
6293 /* No data available, ask for more data. */
6294 if (ret == 1)
6295 len2 = 0;
6296 if (ret == 0)
6297 len1 = 0;
6298 if (len1 + len2 < strm->txn->req.eoh + 2) {
6299 si_applet_cant_get(si);
6300 return;
6301 }
6302
6303 /* skip the requests bytes. */
6304 bo_skip(si_oc(si), strm->txn->req.eoh + 2);
6305 }
6306
6307 /* Executes The applet if it is not done. */
6308 if (!(ctx->ctx.hlua_apphttp.flags & APPLET_DONE)) {
6309
6310 /* Execute the function. */
6311 switch (hlua_ctx_resume(hlua, 1)) {
6312 /* finished. */
6313 case HLUA_E_OK:
6314 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
6315 break;
6316
6317 /* yield. */
6318 case HLUA_E_AGAIN:
Thierry Fournier0164f202016-02-20 17:47:43 +01006319 if (hlua->wake_time != TICK_ETERNITY)
6320 task_schedule(ctx->ctx.hlua_apphttp.task, hlua->wake_time);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006321 return;
6322
6323 /* finished with error. */
6324 case HLUA_E_ERRMSG:
6325 /* Display log. */
6326 SEND_ERR(px, "Lua applet http '%s': %s.\n",
6327 rule->arg.hlua_rule->fcn.name, lua_tostring(hlua->T, -1));
6328 lua_pop(hlua->T, 1);
6329 goto error;
6330
6331 case HLUA_E_ERR:
6332 /* Display log. */
6333 SEND_ERR(px, "Lua applet http '%s' return an unknown error.\n",
6334 rule->arg.hlua_rule->fcn.name);
6335 goto error;
6336
6337 default:
6338 goto error;
6339 }
6340 }
6341
6342 if (ctx->ctx.hlua_apphttp.flags & APPLET_DONE) {
6343
6344 /* We must send the final chunk. */
6345 if (ctx->ctx.hlua_apphttp.flags & APPLET_CHUNKED &&
6346 !(ctx->ctx.hlua_apphttp.flags & APPLET_LAST_CHK)) {
6347
6348 /* sent last chunk at once. */
6349 ret = bi_putblk(res, "0\r\n\r\n", 5);
6350
6351 /* critical error. */
6352 if (ret == -2 || ret == -3) {
6353 SEND_ERR(px, "Lua applet http '%s'cannont send last chunk.\n",
6354 rule->arg.hlua_rule->fcn.name);
6355 goto error;
6356 }
6357
6358 /* no enough space error. */
6359 if (ret == -1) {
6360 si_applet_cant_put(si);
6361 return;
6362 }
6363
6364 /* set the last chunk sent. */
6365 ctx->ctx.hlua_apphttp.flags |= APPLET_LAST_CHK;
6366 }
6367
6368 /* close the connection. */
6369
6370 /* status / log */
6371 strm->txn->status = ctx->ctx.hlua_apphttp.status;
6372 strm->logs.tv_request = now;
6373
6374 /* eat the whole request */
6375 bo_skip(si_oc(si), si_ob(si)->o);
6376 res->flags |= CF_READ_NULL;
6377 si_shutr(si);
6378
6379 return;
6380 }
6381
6382error:
6383
6384 /* If we are in HTTP mode, and we are not send any
6385 * data, return a 500 server error in best effort:
6386 * if there are no room avalaible in the buffer,
6387 * just close the connection.
6388 */
6389 bi_putblk(res, error_500, strlen(error_500));
6390 if (!(strm->flags & SF_ERR_MASK))
6391 strm->flags |= SF_ERR_RESOURCE;
6392 si_shutw(si);
6393 si_shutr(si);
6394 ctx->ctx.hlua_apphttp.flags |= APPLET_DONE;
6395}
6396
6397static void hlua_applet_http_release(struct appctx *ctx)
6398{
6399 task_free(ctx->ctx.hlua_apphttp.task);
6400 ctx->ctx.hlua_apphttp.task = NULL;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006401 hlua_ctx_destroy(ctx->ctx.hlua_apphttp.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006402 ctx->ctx.hlua_apphttp.hlua = NULL;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006403}
6404
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006405/* global {tcp|http}-request parser. Return ACT_RET_PRS_OK in
6406 * succes case, else return ACT_RET_PRS_ERR.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02006407 *
6408 * This function can fail with an abort() due to an Lua critical error.
6409 * We are in the configuration parsing process of HAProxy, this abort() is
6410 * tolerated.
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006411 */
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006412static enum act_parse_ret action_register_lua(const char **args, int *cur_arg, struct proxy *px,
6413 struct act_rule *rule, char **err)
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006414{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006415 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006416 int i;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006417
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006418 /* Memory for the rule. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006419 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006420 if (!rule->arg.hlua_rule) {
6421 memprintf(err, "out of memory error");
Thierry FOURNIERafa80492015-08-19 09:04:15 +02006422 return ACT_RET_PRS_ERR;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006423 }
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006424
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006425 /* Memory for arguments. */
6426 rule->arg.hlua_rule->args = calloc(fcn->nargs + 1, sizeof(char *));
6427 if (!rule->arg.hlua_rule->args) {
6428 memprintf(err, "out of memory error");
6429 return ACT_RET_PRS_ERR;
6430 }
6431
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006432 /* Reference the Lua function and store the reference. */
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006433 rule->arg.hlua_rule->fcn = *fcn;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006434
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006435 /* Expect some arguments */
6436 for (i = 0; i < fcn->nargs; i++) {
6437 if (*args[i+1] == '\0') {
6438 memprintf(err, "expect %d arguments", fcn->nargs);
6439 return ACT_RET_PRS_ERR;
6440 }
6441 rule->arg.hlua_rule->args[i] = strdup(args[i + 1]);
6442 if (!rule->arg.hlua_rule->args[i]) {
6443 memprintf(err, "out of memory error");
6444 return ACT_RET_PRS_ERR;
6445 }
6446 (*cur_arg)++;
6447 }
6448 rule->arg.hlua_rule->args[i] = NULL;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006449
Thierry FOURNIER42148732015-09-02 17:17:33 +02006450 rule->action = ACT_CUSTOM;
Thierry FOURNIER4dc15d12015-08-06 18:25:56 +02006451 rule->action_ptr = hlua_action;
Thierry FOURNIERafa80492015-08-19 09:04:15 +02006452 return ACT_RET_PRS_OK;
Thierry FOURNIER258d8aa2015-02-16 20:23:40 +01006453}
6454
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006455static enum act_parse_ret action_register_service_http(const char **args, int *cur_arg, struct proxy *px,
6456 struct act_rule *rule, char **err)
6457{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006458 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006459
Thierry FOURNIER718e2a72015-12-20 20:13:14 +01006460 /* HTTP applets are forbidden in tcp-request rules.
6461 * HTTP applet request requires everything initilized by
6462 * "http_process_request" (analyzer flag AN_REQ_HTTP_INNER).
6463 * The applet will be immediately initilized, but its before
6464 * the call of this analyzer.
6465 */
6466 if (rule->from != ACT_F_HTTP_REQ) {
6467 memprintf(err, "HTTP applets are forbidden from 'tcp-request' rulesets");
6468 return ACT_RET_PRS_ERR;
6469 }
6470
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006471 /* Memory for the rule. */
6472 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
6473 if (!rule->arg.hlua_rule) {
6474 memprintf(err, "out of memory error");
6475 return ACT_RET_PRS_ERR;
6476 }
6477
6478 /* Reference the Lua function and store the reference. */
6479 rule->arg.hlua_rule->fcn = *fcn;
6480
6481 /* TODO: later accept arguments. */
6482 rule->arg.hlua_rule->args = NULL;
6483
6484 /* Add applet pointer in the rule. */
6485 rule->applet.obj_type = OBJ_TYPE_APPLET;
6486 rule->applet.name = fcn->name;
6487 rule->applet.init = hlua_applet_http_init;
6488 rule->applet.fct = hlua_applet_http_fct;
6489 rule->applet.release = hlua_applet_http_release;
6490 rule->applet.timeout = hlua_timeout_applet;
6491
6492 return ACT_RET_PRS_OK;
6493}
6494
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006495/* This function is an LUA binding used for registering
6496 * "sample-conv" functions. It expects a converter name used
6497 * in the haproxy configuration file, and an LUA function.
6498 */
6499__LJMP static int hlua_register_action(lua_State *L)
6500{
6501 struct action_kw_list *akl;
6502 const char *name;
6503 int ref;
6504 int len;
6505 struct hlua_function *fcn;
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006506 int nargs;
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006507
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006508 /* Initialise the number of expected arguments at 0. */
6509 nargs = 0;
6510
6511 if (lua_gettop(L) < 3 || lua_gettop(L) > 4)
6512 WILL_LJMP(luaL_error(L, "'register_action' needs between 3 and 4 arguments"));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006513
6514 /* First argument : converter name. */
6515 name = MAY_LJMP(luaL_checkstring(L, 1));
6516
6517 /* Second argument : environment. */
6518 if (lua_type(L, 2) != LUA_TTABLE)
6519 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
6520
6521 /* Third argument : lua function. */
6522 ref = MAY_LJMP(hlua_checkfunction(L, 3));
6523
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006524 /* Fouth argument : number of mandatories arguments expected on the configuration line. */
6525 if (lua_gettop(L) >= 4)
6526 nargs = MAY_LJMP(luaL_checkinteger(L, 4));
6527
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006528 /* browse the second argulent as an array. */
6529 lua_pushnil(L);
6530 while (lua_next(L, 2) != 0) {
6531 if (lua_type(L, -1) != LUA_TSTRING)
6532 WILL_LJMP(luaL_error(L, "register_action: second argument must be a table of strings"));
6533
6534 /* Check required environment. Only accepted "http" or "tcp". */
6535 /* Allocate and fill the sample fetch keyword struct. */
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006536 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006537 if (!akl)
6538 WILL_LJMP(luaL_error(L, "lua out of memory error."));
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006539 fcn = calloc(1, sizeof(*fcn));
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006540 if (!fcn)
6541 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6542
6543 /* Fill fcn. */
6544 fcn->name = strdup(name);
6545 if (!fcn->name)
6546 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6547 fcn->function_ref = ref;
6548
Thierry FOURNIER / OZON.IO4b123be2016-12-09 18:03:31 +01006549 /* Set the expected number od arguments. */
6550 fcn->nargs = nargs;
6551
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006552 /* List head */
6553 akl->list.n = akl->list.p = NULL;
6554
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006555 /* action keyword. */
6556 len = strlen("lua.") + strlen(name) + 1;
Thierry FOURNIER3c7a77c2015-09-26 00:51:16 +02006557 akl->kw[0].kw = calloc(1, len);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006558 if (!akl->kw[0].kw)
6559 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6560
6561 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
6562
6563 akl->kw[0].match_pfx = 0;
6564 akl->kw[0].private = fcn;
6565 akl->kw[0].parse = action_register_lua;
6566
6567 /* select the action registering point. */
6568 if (strcmp(lua_tostring(L, -1), "tcp-req") == 0)
6569 tcp_req_cont_keywords_register(akl);
6570 else if (strcmp(lua_tostring(L, -1), "tcp-res") == 0)
6571 tcp_res_cont_keywords_register(akl);
6572 else if (strcmp(lua_tostring(L, -1), "http-req") == 0)
6573 http_req_keywords_register(akl);
6574 else if (strcmp(lua_tostring(L, -1), "http-res") == 0)
6575 http_res_keywords_register(akl);
6576 else
6577 WILL_LJMP(luaL_error(L, "lua action environment '%s' is unknown. "
6578 "'tcp-req', 'tcp-res', 'http-req' or 'http-res' "
6579 "are expected.", lua_tostring(L, -1)));
6580
6581 /* pop the environment string. */
6582 lua_pop(L, 1);
6583 }
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006584 return ACT_RET_PRS_OK;
6585}
6586
6587static enum act_parse_ret action_register_service_tcp(const char **args, int *cur_arg, struct proxy *px,
6588 struct act_rule *rule, char **err)
6589{
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02006590 struct hlua_function *fcn = rule->kw->private;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006591
6592 /* Memory for the rule. */
6593 rule->arg.hlua_rule = calloc(1, sizeof(*rule->arg.hlua_rule));
6594 if (!rule->arg.hlua_rule) {
6595 memprintf(err, "out of memory error");
6596 return ACT_RET_PRS_ERR;
6597 }
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006598
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006599 /* Reference the Lua function and store the reference. */
6600 rule->arg.hlua_rule->fcn = *fcn;
6601
6602 /* TODO: later accept arguments. */
6603 rule->arg.hlua_rule->args = NULL;
6604
6605 /* Add applet pointer in the rule. */
6606 rule->applet.obj_type = OBJ_TYPE_APPLET;
6607 rule->applet.name = fcn->name;
6608 rule->applet.init = hlua_applet_tcp_init;
6609 rule->applet.fct = hlua_applet_tcp_fct;
6610 rule->applet.release = hlua_applet_tcp_release;
6611 rule->applet.timeout = hlua_timeout_applet;
6612
6613 return 0;
6614}
6615
6616/* This function is an LUA binding used for registering
6617 * "sample-conv" functions. It expects a converter name used
6618 * in the haproxy configuration file, and an LUA function.
6619 */
6620__LJMP static int hlua_register_service(lua_State *L)
6621{
6622 struct action_kw_list *akl;
6623 const char *name;
6624 const char *env;
6625 int ref;
6626 int len;
6627 struct hlua_function *fcn;
6628
6629 MAY_LJMP(check_args(L, 3, "register_service"));
6630
6631 /* First argument : converter name. */
6632 name = MAY_LJMP(luaL_checkstring(L, 1));
6633
6634 /* Second argument : environment. */
6635 env = MAY_LJMP(luaL_checkstring(L, 2));
6636
6637 /* Third argument : lua function. */
6638 ref = MAY_LJMP(hlua_checkfunction(L, 3));
6639
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006640 /* Allocate and fill the sample fetch keyword struct. */
6641 akl = calloc(1, sizeof(*akl) + sizeof(struct action_kw) * 2);
6642 if (!akl)
6643 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6644 fcn = calloc(1, sizeof(*fcn));
6645 if (!fcn)
6646 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6647
6648 /* Fill fcn. */
6649 len = strlen("<lua.>") + strlen(name) + 1;
6650 fcn->name = calloc(1, len);
6651 if (!fcn->name)
6652 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6653 snprintf((char *)fcn->name, len, "<lua.%s>", name);
6654 fcn->function_ref = ref;
6655
6656 /* List head */
6657 akl->list.n = akl->list.p = NULL;
6658
6659 /* converter keyword. */
6660 len = strlen("lua.") + strlen(name) + 1;
6661 akl->kw[0].kw = calloc(1, len);
6662 if (!akl->kw[0].kw)
6663 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6664
6665 snprintf((char *)akl->kw[0].kw, len, "lua.%s", name);
6666
Thierry FOURNIER / OZON.IO02564fd2016-11-12 11:07:05 +01006667 /* Check required environment. Only accepted "http" or "tcp". */
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006668 if (strcmp(env, "tcp") == 0)
6669 akl->kw[0].parse = action_register_service_tcp;
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006670 else if (strcmp(env, "http") == 0)
6671 akl->kw[0].parse = action_register_service_http;
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006672 else
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02006673 WILL_LJMP(luaL_error(L, "lua service environment '%s' is unknown. "
6674 "'tcp' or 'http' are expected."));
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006675
6676 akl->kw[0].match_pfx = 0;
6677 akl->kw[0].private = fcn;
6678
6679 /* End of array. */
6680 memset(&akl->kw[1], 0, sizeof(*akl->kw));
6681
6682 /* Register this new converter */
6683 service_keywords_register(akl);
6684
Thierry FOURNIER8255a752015-09-23 21:03:35 +02006685 return 0;
6686}
6687
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006688/* This function initialises Lua cli handler. It copies the
6689 * arguments in the Lua stack and create channel IO objects.
6690 */
6691static int hlua_cli_parse_fct(char **args, struct appctx *appctx, void *private)
6692{
6693 struct hlua *hlua;
6694 struct hlua_function *fcn;
6695 int i;
6696 const char *error;
6697
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006698 fcn = private;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006699 appctx->ctx.hlua_cli.fcn = private;
6700
6701 hlua = pool_alloc2(pool2_hlua);
6702 if (!hlua) {
6703 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01006704 return 1;
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006705 }
6706 HLUA_INIT(hlua);
6707 appctx->ctx.hlua_cli.hlua = hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006708
6709 /* Create task used by signal to wakeup applets.
6710 * We use the same wakeup fonction than the Lua applet_tcp and
6711 * applet_http. It is absolutely compatible.
6712 */
6713 appctx->ctx.hlua_cli.task = task_new();
6714 if (!appctx->ctx.hlua_cli.task) {
Thierry FOURNIERffbf5692016-12-16 11:14:06 +01006715 SEND_ERR(NULL, "Lua cli '%s': out of memory.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01006716 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006717 }
6718 appctx->ctx.hlua_cli.task->nice = 0;
6719 appctx->ctx.hlua_cli.task->context = appctx;
6720 appctx->ctx.hlua_cli.task->process = hlua_applet_wakeup;
6721
6722 /* Initialises the Lua context */
6723 if (!hlua_ctx_init(hlua, appctx->ctx.hlua_cli.task)) {
6724 SEND_ERR(NULL, "Lua cli '%s': can't initialize Lua context.\n", fcn->name);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01006725 goto error;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006726 }
6727
6728 /* The following Lua calls can fail. */
6729 if (!SET_SAFE_LJMP(hlua->T)) {
6730 if (lua_type(hlua->T, -1) == LUA_TSTRING)
6731 error = lua_tostring(hlua->T, -1);
6732 else
6733 error = "critical error";
6734 SEND_ERR(NULL, "Lua cli '%s': %s.\n", fcn->name, error);
6735 goto error;
6736 }
6737
6738 /* Check stack available size. */
6739 if (!lua_checkstack(hlua->T, 2)) {
6740 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
6741 goto error;
6742 }
6743
6744 /* Restore the function in the stack. */
6745 lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, fcn->function_ref);
6746
6747 /* Once the arguments parsed, the CLI is like an AppletTCP,
6748 * so push AppletTCP in the stack.
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006749 */
6750 if (!hlua_applet_tcp_new(hlua->T, appctx)) {
6751 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
6752 goto error;
6753 }
6754 hlua->nargs = 1;
6755
6756 /* push keywords in the stack. */
6757 for (i = 0; *args[i]; i++) {
6758 /* Check stack available size. */
6759 if (!lua_checkstack(hlua->T, 1)) {
6760 SEND_ERR(NULL, "Lua cli '%s': full stack.\n", fcn->name);
6761 goto error;
6762 }
6763 lua_pushstring(hlua->T, args[i]);
6764 hlua->nargs++;
6765 }
6766
6767 /* We must initialize the execution timeouts. */
6768 hlua->max_time = hlua_timeout_session;
6769
6770 /* At this point the execution is safe. */
6771 RESET_SAFE_LJMP(hlua->T);
6772
6773 /* It's ok */
6774 return 0;
6775
6776 /* It's not ok. */
6777error:
6778 RESET_SAFE_LJMP(hlua->T);
6779 hlua_ctx_destroy(hlua);
Thierry FOURNIER1be34152016-12-17 12:09:51 +01006780 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006781 return 1;
6782}
6783
6784static int hlua_cli_io_handler_fct(struct appctx *appctx)
6785{
6786 struct hlua *hlua;
6787 struct stream_interface *si;
6788 struct hlua_function *fcn;
6789
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006790 hlua = appctx->ctx.hlua_cli.hlua;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006791 si = appctx->owner;
Willy Tarreau8ae4f752016-12-14 15:41:45 +01006792 fcn = appctx->ctx.hlua_cli.fcn;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006793
6794 /* If the stream is disconnect or closed, ldo nothing. */
6795 if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
6796 return 1;
6797
6798 /* Execute the function. */
6799 switch (hlua_ctx_resume(hlua, 1)) {
6800
6801 /* finished. */
6802 case HLUA_E_OK:
6803 return 1;
6804
6805 /* yield. */
6806 case HLUA_E_AGAIN:
6807 /* We want write. */
6808 if (HLUA_IS_WAKERESWR(hlua))
6809 si_applet_cant_put(si);
6810 /* Set the timeout. */
6811 if (hlua->wake_time != TICK_ETERNITY)
6812 task_schedule(hlua->task, hlua->wake_time);
6813 return 0;
6814
6815 /* finished with error. */
6816 case HLUA_E_ERRMSG:
6817 /* Display log. */
6818 SEND_ERR(NULL, "Lua cli '%s': %s.\n",
6819 fcn->name, lua_tostring(hlua->T, -1));
6820 lua_pop(hlua->T, 1);
6821 return 1;
6822
6823 case HLUA_E_ERR:
6824 /* Display log. */
6825 SEND_ERR(NULL, "Lua cli '%s' return an unknown error.\n",
6826 fcn->name);
6827 return 1;
6828
6829 default:
6830 return 1;
6831 }
6832
6833 return 1;
6834}
6835
6836static void hlua_cli_io_release_fct(struct appctx *appctx)
6837{
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006838 hlua_ctx_destroy(appctx->ctx.hlua_cli.hlua);
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01006839 appctx->ctx.hlua_cli.hlua = NULL;
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01006840}
6841
6842/* This function is an LUA binding used for registering
6843 * new keywords in the cli. It expects a list of keywords
6844 * which are the "path". It is limited to 5 keywords. A
6845 * description of the command, a function to be executed
6846 * for the parsing and a function for io handlers.
6847 */
6848__LJMP static int hlua_register_cli(lua_State *L)
6849{
6850 struct cli_kw_list *cli_kws;
6851 const char *message;
6852 int ref_io;
6853 int len;
6854 struct hlua_function *fcn;
6855 int index;
6856 int i;
6857
6858 MAY_LJMP(check_args(L, 3, "register_cli"));
6859
6860 /* First argument : an array of maximum 5 keywords. */
6861 if (!lua_istable(L, 1))
6862 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table"));
6863
6864 /* Second argument : string with contextual message. */
6865 message = MAY_LJMP(luaL_checkstring(L, 2));
6866
6867 /* Third and fourth argument : lua function. */
6868 ref_io = MAY_LJMP(hlua_checkfunction(L, 3));
6869
6870 /* Allocate and fill the sample fetch keyword struct. */
6871 cli_kws = calloc(1, sizeof(*cli_kws) + sizeof(struct cli_kw) * 2);
6872 if (!cli_kws)
6873 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6874 fcn = calloc(1, sizeof(*fcn));
6875 if (!fcn)
6876 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6877
6878 /* Fill path. */
6879 index = 0;
6880 lua_pushnil(L);
6881 while(lua_next(L, 1) != 0) {
6882 if (index >= 5)
6883 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table with a maximum of 5 entries"));
6884 if (lua_type(L, -1) != LUA_TSTRING)
6885 WILL_LJMP(luaL_argerror(L, 1, "1st argument must be a table filled with strings"));
6886 cli_kws->kw[0].str_kw[index] = strdup(lua_tostring(L, -1));
6887 if (!cli_kws->kw[0].str_kw[index])
6888 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6889 index++;
6890 lua_pop(L, 1);
6891 }
6892
6893 /* Copy help message. */
6894 cli_kws->kw[0].usage = strdup(message);
6895 if (!cli_kws->kw[0].usage)
6896 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6897
6898 /* Fill fcn io handler. */
6899 len = strlen("<lua.cli>") + 1;
6900 for (i = 0; i < index; i++)
6901 len += strlen(cli_kws->kw[0].str_kw[i]) + 1;
6902 fcn->name = calloc(1, len);
6903 if (!fcn->name)
6904 WILL_LJMP(luaL_error(L, "lua out of memory error."));
6905 strncat((char *)fcn->name, "<lua.cli", len);
6906 for (i = 0; i < index; i++) {
6907 strncat((char *)fcn->name, ".", len);
6908 strncat((char *)fcn->name, cli_kws->kw[0].str_kw[i], len);
6909 }
6910 strncat((char *)fcn->name, ">", len);
6911 fcn->function_ref = ref_io;
6912
6913 /* Fill last entries. */
6914 cli_kws->kw[0].private = fcn;
6915 cli_kws->kw[0].parse = hlua_cli_parse_fct;
6916 cli_kws->kw[0].io_handler = hlua_cli_io_handler_fct;
6917 cli_kws->kw[0].io_release = hlua_cli_io_release_fct;
6918
6919 /* Register this new converter */
6920 cli_register_kw(cli_kws);
6921
6922 return 0;
6923}
6924
Thierry FOURNIERbd413492015-03-03 16:52:26 +01006925static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx,
6926 struct proxy *defpx, const char *file, int line,
6927 char **err, unsigned int *timeout)
6928{
6929 const char *error;
6930
6931 error = parse_time_err(args[1], timeout, TIME_UNIT_MS);
6932 if (error && *error != '\0') {
6933 memprintf(err, "%s: invalid timeout", args[0]);
6934 return -1;
6935 }
6936 return 0;
6937}
6938
6939static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx,
6940 struct proxy *defpx, const char *file, int line,
6941 char **err)
6942{
6943 return hlua_read_timeout(args, section_type, curpx, defpx,
6944 file, line, err, &hlua_timeout_session);
6945}
6946
6947static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx,
6948 struct proxy *defpx, const char *file, int line,
6949 char **err)
6950{
6951 return hlua_read_timeout(args, section_type, curpx, defpx,
6952 file, line, err, &hlua_timeout_task);
6953}
6954
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02006955static int hlua_applet_timeout(char **args, int section_type, struct proxy *curpx,
6956 struct proxy *defpx, const char *file, int line,
6957 char **err)
6958{
6959 return hlua_read_timeout(args, section_type, curpx, defpx,
6960 file, line, err, &hlua_timeout_applet);
6961}
6962
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01006963static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx,
6964 struct proxy *defpx, const char *file, int line,
6965 char **err)
6966{
6967 char *error;
6968
6969 hlua_nb_instruction = strtoll(args[1], &error, 10);
6970 if (*error != '\0') {
6971 memprintf(err, "%s: invalid number", args[0]);
6972 return -1;
6973 }
6974 return 0;
6975}
6976
Willy Tarreau32f61e22015-03-18 17:54:59 +01006977static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx,
6978 struct proxy *defpx, const char *file, int line,
6979 char **err)
6980{
6981 char *error;
6982
6983 if (*(args[1]) == 0) {
6984 memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]);
6985 return -1;
6986 }
6987 hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L;
6988 if (*error != '\0') {
6989 memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error);
6990 return -1;
6991 }
6992 return 0;
6993}
6994
6995
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01006996/* This function is called by the main configuration key "lua-load". It loads and
6997 * execute an lua file during the parsing of the HAProxy configuration file. It is
6998 * the main lua entry point.
6999 *
7000 * This funtion runs with the HAProxy keywords API. It returns -1 if an error is
7001 * occured, otherwise it returns 0.
7002 *
7003 * In some error case, LUA set an error message in top of the stack. This function
7004 * returns this error message in the HAProxy logs and pop it from the stack.
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007005 *
7006 * This function can fail with an abort() due to an Lua critical error.
7007 * We are in the configuration parsing process of HAProxy, this abort() is
7008 * tolerated.
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007009 */
7010static int hlua_load(char **args, int section_type, struct proxy *curpx,
7011 struct proxy *defpx, const char *file, int line,
7012 char **err)
7013{
7014 int error;
7015
7016 /* Just load and compile the file. */
7017 error = luaL_loadfile(gL.T, args[1]);
7018 if (error) {
7019 memprintf(err, "error in lua file '%s': %s", args[1], lua_tostring(gL.T, -1));
7020 lua_pop(gL.T, 1);
7021 return -1;
7022 }
7023
7024 /* If no syntax error where detected, execute the code. */
7025 error = lua_pcall(gL.T, 0, LUA_MULTRET, 0);
7026 switch (error) {
7027 case LUA_OK:
7028 break;
7029 case LUA_ERRRUN:
7030 memprintf(err, "lua runtime error: %s\n", lua_tostring(gL.T, -1));
7031 lua_pop(gL.T, 1);
7032 return -1;
7033 case LUA_ERRMEM:
7034 memprintf(err, "lua out of memory error\n");
7035 return -1;
7036 case LUA_ERRERR:
7037 memprintf(err, "lua message handler error: %s\n", lua_tostring(gL.T, -1));
7038 lua_pop(gL.T, 1);
7039 return -1;
7040 case LUA_ERRGCMM:
7041 memprintf(err, "lua garbage collector error: %s\n", lua_tostring(gL.T, -1));
7042 lua_pop(gL.T, 1);
7043 return -1;
7044 default:
7045 memprintf(err, "lua unknonwn error: %s\n", lua_tostring(gL.T, -1));
7046 lua_pop(gL.T, 1);
7047 return -1;
7048 }
7049
7050 return 0;
7051}
7052
7053/* configuration keywords declaration */
7054static struct cfg_kw_list cfg_kws = {{ },{
Thierry FOURNIERbd413492015-03-03 16:52:26 +01007055 { CFG_GLOBAL, "lua-load", hlua_load },
7056 { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout },
7057 { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout },
Thierry FOURNIER56da1012015-10-01 08:42:31 +02007058 { CFG_GLOBAL, "tune.lua.service-timeout", hlua_applet_timeout },
Thierry FOURNIERee9f8022015-03-03 17:37:37 +01007059 { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield },
Willy Tarreau32f61e22015-03-18 17:54:59 +01007060 { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem },
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007061 { 0, NULL, NULL },
7062}};
7063
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007064/* This function can fail with an abort() due to an Lua critical error.
7065 * We are in the initialisation process of HAProxy, this abort() is
7066 * tolerated.
7067 */
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01007068int hlua_post_init()
7069{
7070 struct hlua_init_function *init;
7071 const char *msg;
7072 enum hlua_exec ret;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007073 const char *error;
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01007074
Thierry Fournier3d4a6752016-02-19 20:53:30 +01007075 /* Call post initialisation function in safe environement. */
7076 if (!SET_SAFE_LJMP(gL.T)) {
7077 if (lua_type(gL.T, -1) == LUA_TSTRING)
7078 error = lua_tostring(gL.T, -1);
7079 else
7080 error = "critical error";
7081 fprintf(stderr, "Lua post-init: %s.\n", error);
7082 exit(1);
7083 }
7084 hlua_fcn_post_init(gL.T);
7085 RESET_SAFE_LJMP(gL.T);
7086
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01007087 list_for_each_entry(init, &hlua_init_functions, l) {
7088 lua_rawgeti(gL.T, LUA_REGISTRYINDEX, init->function_ref);
7089 ret = hlua_ctx_resume(&gL, 0);
7090 switch (ret) {
7091 case HLUA_E_OK:
7092 lua_pop(gL.T, -1);
7093 return 1;
7094 case HLUA_E_AGAIN:
7095 Alert("lua init: yield not allowed.\n");
7096 return 0;
7097 case HLUA_E_ERRMSG:
7098 msg = lua_tostring(gL.T, -1);
7099 Alert("lua init: %s.\n", msg);
7100 return 0;
7101 case HLUA_E_ERR:
7102 default:
7103 Alert("lua init: unknown runtime error.\n");
7104 return 0;
7105 }
7106 }
7107 return 1;
7108}
7109
Willy Tarreau32f61e22015-03-18 17:54:59 +01007110/* The memory allocator used by the Lua stack. <ud> is a pointer to the
7111 * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize>
7112 * is the previously allocated size or the kind of object in case of a new
7113 * allocation. <nsize> is the requested new size.
7114 */
7115static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
7116{
7117 struct hlua_mem_allocator *zone = ud;
7118
7119 if (nsize == 0) {
7120 /* it's a free */
7121 if (ptr)
7122 zone->allocated -= osize;
7123 free(ptr);
7124 return NULL;
7125 }
7126
7127 if (!ptr) {
7128 /* it's a new allocation */
7129 if (zone->limit && zone->allocated + nsize > zone->limit)
7130 return NULL;
7131
7132 ptr = malloc(nsize);
7133 if (ptr)
7134 zone->allocated += nsize;
7135 return ptr;
7136 }
7137
7138 /* it's a realloc */
7139 if (zone->limit && zone->allocated + nsize - osize > zone->limit)
7140 return NULL;
7141
7142 ptr = realloc(ptr, nsize);
7143 if (ptr)
7144 zone->allocated += nsize - osize;
7145 return ptr;
7146}
7147
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007148/* Ithis function can fail with an abort() due to an Lua critical error.
7149 * We are in the initialisation process of HAProxy, this abort() is
7150 * tolerated.
7151 */
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01007152void hlua_init(void)
7153{
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007154 int i;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01007155 int idx;
7156 struct sample_fetch *sf;
Thierry FOURNIER594afe72015-03-10 23:58:30 +01007157 struct sample_conv *sc;
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01007158 char *p;
Thierry Fournierfd107a22016-02-19 19:57:23 +01007159 const char *error_msg;
Willy Tarreau80f5fae2015-02-27 16:38:20 +01007160#ifdef USE_OPENSSL
Willy Tarreau80f5fae2015-02-27 16:38:20 +01007161 struct srv_kw *kw;
7162 int tmp_error;
7163 char *error;
Thierry FOURNIER36d13742015-03-17 16:48:53 +01007164 char *args[] = { /* SSL client configuration. */
7165 "ssl",
7166 "verify",
7167 "none",
Thierry FOURNIER36d13742015-03-17 16:48:53 +01007168 NULL
7169 };
Willy Tarreau80f5fae2015-02-27 16:38:20 +01007170#endif
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007171
Thierry FOURNIERebed6e92016-12-16 11:54:07 +01007172 /* Initialise struct hlua and com signals pool */
7173 pool2_hlua = create_pool("hlua", sizeof(struct hlua), MEM_F_SHARED);
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01007174 pool2_hlua_com = create_pool("hlua_com", sizeof(struct hlua_com), MEM_F_SHARED);
7175
Thierry FOURNIER6c9b52c2015-01-23 15:57:06 +01007176 /* Register configuration keywords. */
7177 cfg_register_keywords(&cfg_kws);
7178
Thierry FOURNIER380d0932015-01-23 14:27:52 +01007179 /* Init main lua stack. */
7180 gL.Mref = LUA_REFNIL;
Thierry FOURNIERa097fdf2015-03-03 15:17:35 +01007181 gL.flags = 0;
Thierry FOURNIER9ff7e6e2015-01-23 11:08:20 +01007182 LIST_INIT(&gL.com);
Thierry FOURNIER380d0932015-01-23 14:27:52 +01007183 gL.T = luaL_newstate();
7184 hlua_sethlua(&gL);
7185 gL.Tref = LUA_REFNIL;
7186 gL.task = NULL;
7187
Thierry FOURNIERbabae282015-09-17 11:36:37 +02007188 /* From this point, until the end of the initialisation fucntion,
7189 * the Lua function can fail with an abort. We are in the initialisation
7190 * process of HAProxy, this abort() is tolerated.
7191 */
7192
Willy Tarreau32f61e22015-03-18 17:54:59 +01007193 /* change the memory allocators to track memory usage */
7194 lua_setallocf(gL.T, hlua_alloc, &hlua_global_allocator);
7195
Thierry FOURNIER380d0932015-01-23 14:27:52 +01007196 /* Initialise lua. */
7197 luaL_openlibs(gL.T);
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007198
Thierry Fournier75933d42016-01-21 09:30:18 +01007199 /* Set safe environment for the initialisation. */
7200 if (!SET_SAFE_LJMP(gL.T)) {
Thierry Fournierfd107a22016-02-19 19:57:23 +01007201 if (lua_type(gL.T, -1) == LUA_TSTRING)
7202 error_msg = lua_tostring(gL.T, -1);
7203 else
7204 error_msg = "critical error";
7205 fprintf(stderr, "Lua init: %s.\n", error_msg);
Thierry Fournier75933d42016-01-21 09:30:18 +01007206 exit(1);
7207 }
7208
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007209 /*
7210 *
7211 * Create "core" object.
7212 *
7213 */
7214
Thierry FOURNIERa2d8c652015-03-11 17:29:39 +01007215 /* This table entry is the object "core" base. */
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007216 lua_newtable(gL.T);
7217
7218 /* Push the loglevel constants. */
Willy Tarreau80f5fae2015-02-27 16:38:20 +01007219 for (i = 0; i < NB_LOG_LEVELS; i++)
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007220 hlua_class_const_int(gL.T, log_levels[i], i);
7221
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01007222 /* Register special functions. */
7223 hlua_class_function(gL.T, "register_init", hlua_register_init);
Thierry FOURNIER24f33532015-01-23 12:13:00 +01007224 hlua_class_function(gL.T, "register_task", hlua_register_task);
Thierry FOURNIERfa0e5dd2015-02-16 20:19:18 +01007225 hlua_class_function(gL.T, "register_fetches", hlua_register_fetches);
Thierry FOURNIER9be813f2015-02-16 20:21:12 +01007226 hlua_class_function(gL.T, "register_converters", hlua_register_converters);
Thierry FOURNIER8255a752015-09-23 21:03:35 +02007227 hlua_class_function(gL.T, "register_action", hlua_register_action);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007228 hlua_class_function(gL.T, "register_service", hlua_register_service);
Thierry FOURNIER / OZON.IOa44fdd92016-11-13 13:19:20 +01007229 hlua_class_function(gL.T, "register_cli", hlua_register_cli);
Thierry FOURNIER13416fe2015-02-17 15:01:59 +01007230 hlua_class_function(gL.T, "yield", hlua_yield);
Willy Tarreau59551662015-03-10 14:23:13 +01007231 hlua_class_function(gL.T, "set_nice", hlua_set_nice);
Thierry FOURNIER5b8608f2015-02-16 19:43:25 +01007232 hlua_class_function(gL.T, "sleep", hlua_sleep);
7233 hlua_class_function(gL.T, "msleep", hlua_msleep);
Thierry FOURNIER83758bb2015-02-04 13:21:04 +01007234 hlua_class_function(gL.T, "add_acl", hlua_add_acl);
7235 hlua_class_function(gL.T, "del_acl", hlua_del_acl);
7236 hlua_class_function(gL.T, "set_map", hlua_set_map);
7237 hlua_class_function(gL.T, "del_map", hlua_del_map);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007238 hlua_class_function(gL.T, "tcp", hlua_socket_new);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01007239 hlua_class_function(gL.T, "log", hlua_log);
7240 hlua_class_function(gL.T, "Debug", hlua_log_debug);
7241 hlua_class_function(gL.T, "Info", hlua_log_info);
7242 hlua_class_function(gL.T, "Warning", hlua_log_warning);
7243 hlua_class_function(gL.T, "Alert", hlua_log_alert);
Thierry FOURNIER0a99b892015-08-26 00:14:17 +02007244 hlua_class_function(gL.T, "done", hlua_done);
Thierry Fournierfb0b5462016-01-21 09:28:58 +01007245 hlua_fcn_reg_core_fcn(gL.T);
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01007246
Thierry FOURNIER2ba18a22015-01-23 14:07:08 +01007247 lua_setglobal(gL.T, "core");
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01007248
7249 /*
7250 *
Thierry FOURNIER3def3932015-04-07 11:27:54 +02007251 * Register class Map
7252 *
7253 */
7254
7255 /* This table entry is the object "Map" base. */
7256 lua_newtable(gL.T);
7257
7258 /* register pattern types. */
7259 for (i=0; i<PAT_MATCH_NUM; i++)
7260 hlua_class_const_int(gL.T, pat_match_names[i], i);
7261
7262 /* register constructor. */
7263 hlua_class_function(gL.T, "new", hlua_map_new);
7264
7265 /* Create and fill the metatable. */
7266 lua_newtable(gL.T);
7267
7268 /* Create and fille the __index entry. */
7269 lua_pushstring(gL.T, "__index");
7270 lua_newtable(gL.T);
7271
7272 /* Register . */
7273 hlua_class_function(gL.T, "lookup", hlua_map_lookup);
7274 hlua_class_function(gL.T, "slookup", hlua_map_slookup);
7275
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007276 lua_rawset(gL.T, -3);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02007277
Thierry Fournier45e78d72016-02-19 18:34:46 +01007278 /* Register previous table in the registry with reference and named entry.
7279 * The function hlua_register_metatable() pops the stack, so we
7280 * previously create a copy of the table.
7281 */
Thierry FOURNIER3def3932015-04-07 11:27:54 +02007282 lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007283 class_map_ref = hlua_register_metatable(gL.T, CLASS_MAP);
Thierry FOURNIER3def3932015-04-07 11:27:54 +02007284
7285 /* Assign the metatable to the mai Map object. */
7286 lua_setmetatable(gL.T, -2);
7287
7288 /* Set a name to the table. */
7289 lua_setglobal(gL.T, "Map");
7290
7291 /*
7292 *
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01007293 * Register class Channel
7294 *
7295 */
7296
7297 /* Create and fill the metatable. */
7298 lua_newtable(gL.T);
7299
7300 /* Create and fille the __index entry. */
7301 lua_pushstring(gL.T, "__index");
7302 lua_newtable(gL.T);
7303
7304 /* Register . */
7305 hlua_class_function(gL.T, "get", hlua_channel_get);
7306 hlua_class_function(gL.T, "dup", hlua_channel_dup);
7307 hlua_class_function(gL.T, "getline", hlua_channel_getline);
7308 hlua_class_function(gL.T, "set", hlua_channel_set);
7309 hlua_class_function(gL.T, "append", hlua_channel_append);
7310 hlua_class_function(gL.T, "send", hlua_channel_send);
7311 hlua_class_function(gL.T, "forward", hlua_channel_forward);
7312 hlua_class_function(gL.T, "get_in_len", hlua_channel_get_in_len);
7313 hlua_class_function(gL.T, "get_out_len", hlua_channel_get_out_len);
Thierry FOURNIER / OZON.IO65192f32016-11-07 15:28:40 +01007314 hlua_class_function(gL.T, "is_full", hlua_channel_is_full);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01007315
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007316 lua_rawset(gL.T, -3);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01007317
7318 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007319 class_channel_ref = hlua_register_metatable(gL.T, CLASS_CHANNEL);
Thierry FOURNIER5a6d3fd2015-02-09 16:38:34 +01007320
7321 /*
7322 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01007323 * Register class Fetches
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01007324 *
7325 */
7326
7327 /* Create and fill the metatable. */
7328 lua_newtable(gL.T);
7329
7330 /* Create and fille the __index entry. */
7331 lua_pushstring(gL.T, "__index");
7332 lua_newtable(gL.T);
7333
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01007334 /* Browse existing fetches and create the associated
7335 * object method.
7336 */
7337 sf = NULL;
7338 while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) {
7339
7340 /* Dont register the keywork if the arguments check function are
7341 * not safe during the runtime.
7342 */
7343 if ((sf->val_args != NULL) &&
7344 (sf->val_args != val_payload_lv) &&
7345 (sf->val_args != val_hdr))
7346 continue;
7347
7348 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
7349 * by an underscore.
7350 */
7351 strncpy(trash.str, sf->kw, trash.size);
7352 trash.str[trash.size - 1] = '\0';
7353 for (p = trash.str; *p; p++)
7354 if (*p == '.' || *p == '-' || *p == '+')
7355 *p = '_';
7356
7357 /* Register the function. */
7358 lua_pushstring(gL.T, trash.str);
Willy Tarreau2ec22742015-03-10 14:27:20 +01007359 lua_pushlightuserdata(gL.T, sf);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01007360 lua_pushcclosure(gL.T, hlua_run_sample_fetch, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007361 lua_rawset(gL.T, -3);
Thierry FOURNIERd0fa5382015-02-16 20:14:51 +01007362 }
7363
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007364 lua_rawset(gL.T, -3);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01007365
7366 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007367 class_fetches_ref = hlua_register_metatable(gL.T, CLASS_FETCHES);
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01007368
7369 /*
7370 *
Thierry FOURNIER594afe72015-03-10 23:58:30 +01007371 * Register class Converters
7372 *
7373 */
7374
7375 /* Create and fill the metatable. */
7376 lua_newtable(gL.T);
7377
7378 /* Create and fill the __index entry. */
7379 lua_pushstring(gL.T, "__index");
7380 lua_newtable(gL.T);
7381
7382 /* Browse existing converters and create the associated
7383 * object method.
7384 */
7385 sc = NULL;
7386 while ((sc = sample_conv_getnext(sc, &idx)) != NULL) {
7387 /* Dont register the keywork if the arguments check function are
7388 * not safe during the runtime.
7389 */
7390 if (sc->val_args != NULL)
7391 continue;
7392
7393 /* gL.Tua doesn't support '.' and '-' in the function names, replace it
7394 * by an underscore.
7395 */
7396 strncpy(trash.str, sc->kw, trash.size);
7397 trash.str[trash.size - 1] = '\0';
7398 for (p = trash.str; *p; p++)
7399 if (*p == '.' || *p == '-' || *p == '+')
7400 *p = '_';
7401
7402 /* Register the function. */
7403 lua_pushstring(gL.T, trash.str);
7404 lua_pushlightuserdata(gL.T, sc);
7405 lua_pushcclosure(gL.T, hlua_run_sample_conv, 1);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007406 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01007407 }
7408
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007409 lua_rawset(gL.T, -3);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01007410
7411 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007412 class_converters_ref = hlua_register_metatable(gL.T, CLASS_CONVERTERS);
Thierry FOURNIER594afe72015-03-10 23:58:30 +01007413
7414 /*
7415 *
Thierry FOURNIER08504f42015-03-16 14:17:08 +01007416 * Register class HTTP
7417 *
7418 */
7419
7420 /* Create and fill the metatable. */
7421 lua_newtable(gL.T);
7422
7423 /* Create and fille the __index entry. */
7424 lua_pushstring(gL.T, "__index");
7425 lua_newtable(gL.T);
7426
7427 /* Register Lua functions. */
7428 hlua_class_function(gL.T, "req_get_headers",hlua_http_req_get_headers);
7429 hlua_class_function(gL.T, "req_del_header", hlua_http_req_del_hdr);
7430 hlua_class_function(gL.T, "req_rep_header", hlua_http_req_rep_hdr);
7431 hlua_class_function(gL.T, "req_rep_value", hlua_http_req_rep_val);
7432 hlua_class_function(gL.T, "req_add_header", hlua_http_req_add_hdr);
7433 hlua_class_function(gL.T, "req_set_header", hlua_http_req_set_hdr);
7434 hlua_class_function(gL.T, "req_set_method", hlua_http_req_set_meth);
7435 hlua_class_function(gL.T, "req_set_path", hlua_http_req_set_path);
7436 hlua_class_function(gL.T, "req_set_query", hlua_http_req_set_query);
7437 hlua_class_function(gL.T, "req_set_uri", hlua_http_req_set_uri);
7438
7439 hlua_class_function(gL.T, "res_get_headers",hlua_http_res_get_headers);
7440 hlua_class_function(gL.T, "res_del_header", hlua_http_res_del_hdr);
7441 hlua_class_function(gL.T, "res_rep_header", hlua_http_res_rep_hdr);
7442 hlua_class_function(gL.T, "res_rep_value", hlua_http_res_rep_val);
7443 hlua_class_function(gL.T, "res_add_header", hlua_http_res_add_hdr);
7444 hlua_class_function(gL.T, "res_set_header", hlua_http_res_set_hdr);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +02007445 hlua_class_function(gL.T, "res_set_status", hlua_http_res_set_status);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01007446
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007447 lua_rawset(gL.T, -3);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01007448
7449 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007450 class_http_ref = hlua_register_metatable(gL.T, CLASS_HTTP);
Thierry FOURNIER08504f42015-03-16 14:17:08 +01007451
7452 /*
7453 *
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007454 * Register class AppletTCP
7455 *
7456 */
7457
7458 /* Create and fill the metatable. */
7459 lua_newtable(gL.T);
7460
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007461 /* Create and fille the __index entry. */
7462 lua_pushstring(gL.T, "__index");
7463 lua_newtable(gL.T);
7464
7465 /* Register Lua functions. */
Thierry FOURNIER / OZON.IO3e1d7912016-12-12 12:29:34 +01007466 hlua_class_function(gL.T, "getline", hlua_applet_tcp_getline);
7467 hlua_class_function(gL.T, "receive", hlua_applet_tcp_recv);
7468 hlua_class_function(gL.T, "send", hlua_applet_tcp_send);
7469 hlua_class_function(gL.T, "set_priv", hlua_applet_tcp_set_priv);
7470 hlua_class_function(gL.T, "get_priv", hlua_applet_tcp_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01007471 hlua_class_function(gL.T, "set_var", hlua_applet_tcp_set_var);
7472 hlua_class_function(gL.T, "unset_var", hlua_applet_tcp_unset_var);
7473 hlua_class_function(gL.T, "get_var", hlua_applet_tcp_get_var);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007474
7475 lua_settable(gL.T, -3);
7476
7477 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007478 class_applet_tcp_ref = hlua_register_metatable(gL.T, CLASS_APPLET_TCP);
Thierry FOURNIERf0a64b62015-09-19 12:36:17 +02007479
7480 /*
7481 *
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007482 * Register class AppletHTTP
7483 *
7484 */
7485
7486 /* Create and fill the metatable. */
7487 lua_newtable(gL.T);
7488
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007489 /* Create and fille the __index entry. */
7490 lua_pushstring(gL.T, "__index");
7491 lua_newtable(gL.T);
7492
7493 /* Register Lua functions. */
Thierry FOURNIER8db004c2015-12-25 01:33:18 +01007494 hlua_class_function(gL.T, "set_priv", hlua_applet_http_set_priv);
7495 hlua_class_function(gL.T, "get_priv", hlua_applet_http_get_priv);
Thierry FOURNIER / OZON.IO4394a2c2016-12-12 12:31:54 +01007496 hlua_class_function(gL.T, "set_var", hlua_applet_http_set_var);
7497 hlua_class_function(gL.T, "unset_var", hlua_applet_http_unset_var);
7498 hlua_class_function(gL.T, "get_var", hlua_applet_http_get_var);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007499 hlua_class_function(gL.T, "getline", hlua_applet_http_getline);
7500 hlua_class_function(gL.T, "receive", hlua_applet_http_recv);
7501 hlua_class_function(gL.T, "send", hlua_applet_http_send);
7502 hlua_class_function(gL.T, "add_header", hlua_applet_http_addheader);
7503 hlua_class_function(gL.T, "set_status", hlua_applet_http_status);
7504 hlua_class_function(gL.T, "start_response", hlua_applet_http_start_response);
7505
7506 lua_settable(gL.T, -3);
7507
7508 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007509 class_applet_http_ref = hlua_register_metatable(gL.T, CLASS_APPLET_HTTP);
Thierry FOURNIERa30b5db2015-09-18 09:04:27 +02007510
7511 /*
7512 *
Thierry FOURNIERbb53c7b2015-03-11 18:28:02 +01007513 * Register class TXN
7514 *
7515 */
7516
7517 /* Create and fill the metatable. */
7518 lua_newtable(gL.T);
7519
7520 /* Create and fille the __index entry. */
7521 lua_pushstring(gL.T, "__index");
7522 lua_newtable(gL.T);
7523
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01007524 /* Register Lua functions. */
Willy Tarreau59551662015-03-10 14:23:13 +01007525 hlua_class_function(gL.T, "set_priv", hlua_set_priv);
7526 hlua_class_function(gL.T, "get_priv", hlua_get_priv);
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02007527 hlua_class_function(gL.T, "set_var", hlua_set_var);
Christopher Faulet85d79c92016-11-09 16:54:56 +01007528 hlua_class_function(gL.T, "unset_var", hlua_unset_var);
Thierry FOURNIER053ba8ad2015-06-08 13:05:33 +02007529 hlua_class_function(gL.T, "get_var", hlua_get_var);
Thierry FOURNIER4bb375c2015-08-26 08:42:21 +02007530 hlua_class_function(gL.T, "done", hlua_txn_done);
Thierry FOURNIER2cce3532015-03-16 12:04:16 +01007531 hlua_class_function(gL.T, "set_loglevel",hlua_txn_set_loglevel);
7532 hlua_class_function(gL.T, "set_tos", hlua_txn_set_tos);
7533 hlua_class_function(gL.T, "set_mark", hlua_txn_set_mark);
Thierry FOURNIERc798b5d2015-03-17 01:09:57 +01007534 hlua_class_function(gL.T, "deflog", hlua_txn_deflog);
7535 hlua_class_function(gL.T, "log", hlua_txn_log);
7536 hlua_class_function(gL.T, "Debug", hlua_txn_log_debug);
7537 hlua_class_function(gL.T, "Info", hlua_txn_log_info);
7538 hlua_class_function(gL.T, "Warning", hlua_txn_log_warning);
7539 hlua_class_function(gL.T, "Alert", hlua_txn_log_alert);
Thierry FOURNIER05c0b8a2015-02-25 11:43:21 +01007540
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007541 lua_rawset(gL.T, -3);
Thierry FOURNIER65f34c62015-02-16 20:11:43 +01007542
7543 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007544 class_txn_ref = hlua_register_metatable(gL.T, CLASS_TXN);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007545
7546 /*
7547 *
7548 * Register class Socket
7549 *
7550 */
7551
7552 /* Create and fill the metatable. */
7553 lua_newtable(gL.T);
7554
7555 /* Create and fille the __index entry. */
7556 lua_pushstring(gL.T, "__index");
7557 lua_newtable(gL.T);
7558
Baptiste Assmann84bb4932015-03-02 21:40:06 +01007559#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007560 hlua_class_function(gL.T, "connect_ssl", hlua_socket_connect_ssl);
Baptiste Assmann84bb4932015-03-02 21:40:06 +01007561#endif
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007562 hlua_class_function(gL.T, "connect", hlua_socket_connect);
7563 hlua_class_function(gL.T, "send", hlua_socket_send);
7564 hlua_class_function(gL.T, "receive", hlua_socket_receive);
7565 hlua_class_function(gL.T, "close", hlua_socket_close);
7566 hlua_class_function(gL.T, "getpeername", hlua_socket_getpeername);
7567 hlua_class_function(gL.T, "getsockname", hlua_socket_getsockname);
7568 hlua_class_function(gL.T, "setoption", hlua_socket_setoption);
7569 hlua_class_function(gL.T, "settimeout", hlua_socket_settimeout);
7570
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007571 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007572
7573 /* Register the garbage collector entry. */
7574 lua_pushstring(gL.T, "__gc");
7575 lua_pushcclosure(gL.T, hlua_socket_gc, 0);
Thierry FOURNIER84e73c82015-09-25 22:13:32 +02007576 lua_rawset(gL.T, -3); /* Push the last 2 entries in the table at index -3 */
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007577
7578 /* Register previous table in the registry with reference and named entry. */
Thierry Fournier45e78d72016-02-19 18:34:46 +01007579 class_socket_ref = hlua_register_metatable(gL.T, CLASS_SOCKET);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007580
7581 /* Proxy and server configuration initialisation. */
7582 memset(&socket_proxy, 0, sizeof(socket_proxy));
7583 init_new_proxy(&socket_proxy);
7584 socket_proxy.parent = NULL;
7585 socket_proxy.last_change = now.tv_sec;
7586 socket_proxy.id = "LUA-SOCKET";
7587 socket_proxy.cap = PR_CAP_FE | PR_CAP_BE;
7588 socket_proxy.maxconn = 0;
7589 socket_proxy.accept = NULL;
7590 socket_proxy.options2 |= PR_O2_INDEPSTR;
7591 socket_proxy.srv = NULL;
7592 socket_proxy.conn_retries = 0;
7593 socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */
7594
7595 /* Init TCP server: unchanged parameters */
7596 memset(&socket_tcp, 0, sizeof(socket_tcp));
7597 socket_tcp.next = NULL;
7598 socket_tcp.proxy = &socket_proxy;
7599 socket_tcp.obj_type = OBJ_TYPE_SERVER;
7600 LIST_INIT(&socket_tcp.actconns);
7601 LIST_INIT(&socket_tcp.pendconns);
Willy Tarreau600802a2015-08-04 17:19:06 +02007602 LIST_INIT(&socket_tcp.priv_conns);
Willy Tarreau173a1c62015-08-05 10:31:57 +02007603 LIST_INIT(&socket_tcp.idle_conns);
Willy Tarreau7017cb02015-08-05 16:35:23 +02007604 LIST_INIT(&socket_tcp.safe_conns);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007605 socket_tcp.state = SRV_ST_RUNNING; /* early server setup */
7606 socket_tcp.last_change = 0;
7607 socket_tcp.id = "LUA-TCP-CONN";
7608 socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
7609 socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
7610 socket_tcp.pp_opts = 0; /* Remove proxy protocol. */
7611
7612 /* XXX: Copy default parameter from default server,
7613 * but the default server is not initialized.
7614 */
7615 socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue;
7616 socket_tcp.minconn = socket_proxy.defsrv.minconn;
7617 socket_tcp.maxconn = socket_proxy.defsrv.maxconn;
7618 socket_tcp.slowstart = socket_proxy.defsrv.slowstart;
7619 socket_tcp.onerror = socket_proxy.defsrv.onerror;
7620 socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
7621 socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup;
7622 socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
7623 socket_tcp.uweight = socket_proxy.defsrv.iweight;
7624 socket_tcp.iweight = socket_proxy.defsrv.iweight;
7625
7626 socket_tcp.check.status = HCHK_STATUS_INI;
7627 socket_tcp.check.rise = socket_proxy.defsrv.check.rise;
7628 socket_tcp.check.fall = socket_proxy.defsrv.check.fall;
7629 socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */
7630 socket_tcp.check.server = &socket_tcp;
7631
7632 socket_tcp.agent.status = HCHK_STATUS_INI;
7633 socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise;
7634 socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall;
7635 socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */
7636 socket_tcp.agent.server = &socket_tcp;
7637
Willy Tarreaua261e9b2016-12-22 20:44:00 +01007638 socket_tcp.xprt = xprt_get(XPRT_RAW);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007639
7640#ifdef USE_OPENSSL
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007641 /* Init TCP server: unchanged parameters */
7642 memset(&socket_ssl, 0, sizeof(socket_ssl));
7643 socket_ssl.next = NULL;
7644 socket_ssl.proxy = &socket_proxy;
7645 socket_ssl.obj_type = OBJ_TYPE_SERVER;
7646 LIST_INIT(&socket_ssl.actconns);
7647 LIST_INIT(&socket_ssl.pendconns);
Willy Tarreau600802a2015-08-04 17:19:06 +02007648 LIST_INIT(&socket_ssl.priv_conns);
Willy Tarreau173a1c62015-08-05 10:31:57 +02007649 LIST_INIT(&socket_ssl.idle_conns);
Willy Tarreau7017cb02015-08-05 16:35:23 +02007650 LIST_INIT(&socket_ssl.safe_conns);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007651 socket_ssl.state = SRV_ST_RUNNING; /* early server setup */
7652 socket_ssl.last_change = 0;
7653 socket_ssl.id = "LUA-SSL-CONN";
7654 socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
7655 socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */
7656 socket_ssl.pp_opts = 0; /* Remove proxy protocol. */
7657
7658 /* XXX: Copy default parameter from default server,
7659 * but the default server is not initialized.
7660 */
7661 socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue;
7662 socket_ssl.minconn = socket_proxy.defsrv.minconn;
7663 socket_ssl.maxconn = socket_proxy.defsrv.maxconn;
7664 socket_ssl.slowstart = socket_proxy.defsrv.slowstart;
7665 socket_ssl.onerror = socket_proxy.defsrv.onerror;
7666 socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown;
7667 socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup;
7668 socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit;
7669 socket_ssl.uweight = socket_proxy.defsrv.iweight;
7670 socket_ssl.iweight = socket_proxy.defsrv.iweight;
7671
7672 socket_ssl.check.status = HCHK_STATUS_INI;
7673 socket_ssl.check.rise = socket_proxy.defsrv.check.rise;
7674 socket_ssl.check.fall = socket_proxy.defsrv.check.fall;
7675 socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */
7676 socket_ssl.check.server = &socket_ssl;
7677
7678 socket_ssl.agent.status = HCHK_STATUS_INI;
7679 socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise;
7680 socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall;
7681 socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */
7682 socket_ssl.agent.server = &socket_ssl;
7683
Thierry FOURNIER36d13742015-03-17 16:48:53 +01007684 socket_ssl.use_ssl = 1;
Willy Tarreaua261e9b2016-12-22 20:44:00 +01007685 socket_ssl.xprt = xprt_get(XPRT_SSL);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007686
Thierry FOURNIER36d13742015-03-17 16:48:53 +01007687 for (idx = 0; args[idx] != NULL; idx++) {
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007688 if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */
7689 /*
7690 *
7691 * If the keyword is not known, we can search in the registered
7692 * server keywords. This is usefull to configure special SSL
7693 * features like client certificates and ssl_verify.
7694 *
7695 */
7696 tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error);
7697 if (tmp_error != 0) {
7698 fprintf(stderr, "INTERNAL ERROR: %s\n", error);
7699 abort(); /* This must be never arrives because the command line
7700 not editable by the user. */
7701 }
7702 idx += kw->skip;
7703 }
7704 }
7705
7706 /* Initialize SSL server. */
Willy Tarreau17d45382016-12-22 21:16:08 +01007707 if (socket_ssl.xprt->prepare_srv)
7708 socket_ssl.xprt->prepare_srv(&socket_ssl);
Thierry FOURNIER7e7ac322015-02-16 19:27:16 +01007709#endif
Thierry Fournier75933d42016-01-21 09:30:18 +01007710
7711 RESET_SAFE_LJMP(gL.T);
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01007712}
Willy Tarreaubb57d942016-12-21 19:04:56 +01007713
7714__attribute__((constructor))
7715static void __hlua_init(void)
7716{
7717 char *ptr = NULL;
7718 memprintf(&ptr, "Built with Lua version : %s", LUA_RELEASE);
7719 hap_register_build_opts(ptr, 1);
7720}