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Commit | Line | Data |
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2da56f0d CP |
1 | /* Lua bindings for Newserv */ |
2 | ||
3 | /* Copyright (C) Chris Porter 2005 */ | |
4 | /* ALL RIGHTS RESERVED. */ | |
5 | /* Don't put this into the SVN repo. */ | |
6 | ||
d324e17b CP |
7 | #define _POSIX_C_SOURCE 200112L |
8 | #include <stdlib.h> | |
9 | ||
2da56f0d CP |
10 | #include "../core/config.h" |
11 | #include "../core/error.h" | |
12 | #include "../core/hooks.h" | |
13 | #include "../lib/array.h" | |
14 | #include "../lib/irc_string.h" | |
15 | #include "../core/schedule.h" | |
87698d77 | 16 | #include "../lib/version.h" |
d324e17b | 17 | #include "../lib/strlfunc.h" |
2da56f0d CP |
18 | #include "lua.h" |
19 | ||
c3c955ee | 20 | MODULE_VERSION(LUA_SMALLVERSION); |
87698d77 | 21 | |
9887536a CP |
22 | #ifdef LUA_DEBUGSOCKET |
23 | ||
24 | #include <sys/types.h> | |
25 | #include <sys/socket.h> | |
26 | #include <netinet/in.h> | |
27 | #include <arpa/inet.h> | |
28 | #include <netdb.h> | |
29 | #include <unistd.h> | |
30 | #include <stdarg.h> | |
31 | ||
32 | #endif | |
33 | ||
2da56f0d CP |
34 | void lua_startup(void *arg); |
35 | void lua_loadscripts(void); | |
2da56f0d | 36 | void lua_registercommands(lua_State *l); |
55cee062 | 37 | void lua_registerdbcommands(lua_State *l); |
30a59b87 | 38 | void lua_initnickpusher(void); |
ec91b2e4 | 39 | void lua_initchanpusher(void); |
c673fb9b | 40 | void lua_loadlibs(lua_State *l); |
6269435f | 41 | void lua_require(lua_State *l, char *module); |
2da56f0d CP |
42 | |
43 | void lua_startbot(void *arg); | |
44 | void lua_destroybot(void); | |
45 | void lua_startcontrol(void); | |
46 | void lua_destroycontrol(void); | |
dad344a7 | 47 | void lua_destroydb(void); |
2da56f0d CP |
48 | |
49 | void lua_onunload(lua_State *l); | |
50 | void lua_onload(lua_State *l); | |
51 | ||
d324e17b | 52 | void lua_setpath(void); |
2da56f0d | 53 | |
9887536a CP |
54 | void lua_setupdebugsocket(void); |
55 | void lua_freedebugsocket(void); | |
56 | ||
0225bed3 CP |
57 | void lua_deregisternicks(lua_list *l); |
58 | void lua_registerlocalcommands(lua_State *ps); | |
f9f8ee13 | 59 | void lua_registerdebug(lua_State *ps); |
065c0091 | 60 | void lua_socket_closeall(lua_list *l); |
72054e5b | 61 | void lua_scheduler_freeall(lua_list *l); |
065c0091 | 62 | void lua_registersocketcommands(lua_State *ps); |
3cf6947a | 63 | void lua_registercryptocommands(lua_State *ps); |
72054e5b | 64 | void lua_registerschedulercommands(lua_State *ps); |
0225bed3 | 65 | |
9887536a CP |
66 | #ifdef LUA_DEBUGSOCKET |
67 | ||
68 | struct sockaddr_in debugsocketdest; | |
69 | int debugsocket = -1; | |
70 | ||
71 | #endif | |
72 | ||
2da56f0d CP |
73 | lua_list *lua_head = NULL, *lua_tail = NULL; |
74 | ||
a25981bf | 75 | sstring *cpath = NULL, *suffix = NULL; |
2da56f0d CP |
76 | |
77 | void *startsched = NULL; | |
78 | ||
a25981bf CP |
79 | int loaded = 0; |
80 | ||
fe0f6b25 CP |
81 | struct rusage r_usages; |
82 | struct rusage r_usagee; | |
83 | ||
c673fb9b CP |
84 | static const luaL_Reg ourlibs[] = { |
85 | {"", luaopen_base}, | |
86 | {LUA_LOADLIBNAME, luaopen_package}, | |
87 | {LUA_TABLIBNAME, luaopen_table}, | |
88 | {LUA_IOLIBNAME, luaopen_io}, | |
89 | {LUA_OSLIBNAME, luaopen_os}, | |
90 | {LUA_STRLIBNAME, luaopen_string}, | |
91 | {LUA_MATHLIBNAME, luaopen_math}, | |
9887536a | 92 | #ifdef LUA_USEJIT |
6269435f CP |
93 | {LUA_JITLIBNAME, luaopen_jit}, |
94 | #endif | |
c673fb9b CP |
95 | {NULL, NULL} |
96 | }; | |
d0d1e2a3 CP |
97 | |
98 | lua_list dummy; | |
c673fb9b | 99 | |
2da56f0d | 100 | void _init() { |
9887536a | 101 | lua_setupdebugsocket(); |
30a59b87 | 102 | lua_initnickpusher(); |
ec91b2e4 | 103 | lua_initchanpusher(); |
9887536a | 104 | |
d0d1e2a3 CP |
105 | dummy.name = getsstring("???", 10); |
106 | if(!dummy.name) { | |
107 | Error("lua", ERR_ERROR, "Cannot set dummy name."); | |
108 | return; | |
109 | } | |
110 | ||
a25981bf CP |
111 | cpath = getcopyconfigitem("lua", "scriptdir", "", 500); |
112 | ||
113 | if(!cpath || !cpath->content || !cpath->content[0]) { | |
114 | Error("lua", ERR_ERROR, "Error loading path."); | |
115 | return; | |
116 | } | |
117 | ||
118 | suffix = getcopyconfigitem("lua", "scriptsuffix", ".lua", 10); | |
119 | if(!suffix) { | |
120 | Error("lua", ERR_ERROR, "Error loading suffix."); | |
121 | return; | |
122 | } | |
123 | ||
d324e17b CP |
124 | lua_setpath(); |
125 | ||
a25981bf CP |
126 | loaded = 1; |
127 | ||
2da56f0d CP |
128 | startsched = scheduleoneshot(time(NULL) + 1, &lua_startup, NULL); |
129 | } | |
130 | ||
131 | void lua_startup(void *arg) { | |
2da56f0d CP |
132 | startsched = NULL; |
133 | ||
2da56f0d CP |
134 | lua_startcontrol(); |
135 | lua_startbot(NULL); | |
136 | ||
a25981bf | 137 | lua_loadscripts(); |
2da56f0d CP |
138 | } |
139 | ||
140 | #ifdef BROKEN_DLCLOSE | |
141 | void __fini() { | |
142 | #else | |
143 | void _fini() { | |
144 | #endif | |
2da56f0d | 145 | |
a25981bf CP |
146 | if(loaded) { |
147 | if(startsched) | |
148 | deleteschedule(startsched, &lua_startup, NULL); | |
2da56f0d | 149 | |
a25981bf CP |
150 | while(lua_head) |
151 | lua_unloadscript(lua_head); | |
2da56f0d | 152 | |
a25981bf CP |
153 | lua_destroybot(); |
154 | lua_destroycontrol(); | |
dad344a7 | 155 | lua_destroydb(); |
2da56f0d CP |
156 | } |
157 | ||
a25981bf CP |
158 | freesstring(cpath); |
159 | freesstring(suffix); | |
d0d1e2a3 | 160 | freesstring(dummy.name); |
9887536a CP |
161 | |
162 | lua_freedebugsocket(); | |
f8d5cfcf | 163 | nscheckfreeall(POOL_LUA); |
2da56f0d CP |
164 | } |
165 | ||
166 | void lua_loadscripts(void) { | |
167 | array *ls; | |
168 | ||
169 | ls = getconfigitems("lua", "script"); | |
170 | if(!ls) { | |
171 | Error("lua", ERR_INFO, "No scripts loaded."); | |
172 | } else { | |
173 | sstring **scripts = (sstring **)(ls->content); | |
174 | int i; | |
175 | for(i=0;i<ls->cursi;i++) | |
176 | lua_loadscript(scripts[i]->content); | |
177 | } | |
178 | } | |
179 | ||
93917ccd CP |
180 | /* taken from the lua manual, modified to use nsmalloc */ |
181 | static void *lua_nsmalloc(void *ud, void *ptr, size_t osize, size_t nsize) { | |
182 | if(nsize == 0) { | |
183 | if(ptr != NULL) | |
184 | luafree(ptr); | |
185 | return NULL; | |
186 | } | |
187 | ||
188 | return luarealloc(ptr, nsize); | |
189 | } | |
190 | ||
2da56f0d CP |
191 | lua_State *lua_loadscript(char *file) { |
192 | char fullpath[LUA_PATHLEN]; | |
193 | int top; | |
194 | lua_State *l; | |
195 | lua_list *n; | |
d324e17b | 196 | char buf[1024]; |
41bfdb81 | 197 | void *args[2]; |
2da56f0d CP |
198 | |
199 | if(!cpath || !suffix) | |
200 | return NULL; | |
201 | ||
d324e17b | 202 | strlcpy(buf, file, sizeof(buf)); |
2da56f0d | 203 | |
d324e17b CP |
204 | delchars(buf, "./\\;"); |
205 | ||
206 | if(lua_scriptloaded(buf)) | |
2da56f0d CP |
207 | return NULL; |
208 | ||
93917ccd | 209 | l = lua_newstate(lua_nsmalloc, NULL); |
2da56f0d CP |
210 | if(!l) |
211 | return NULL; | |
212 | ||
d0e17ef9 | 213 | n = (lua_list *)luamalloc(sizeof(lua_list));; |
2da56f0d | 214 | if(!n) { |
d324e17b | 215 | Error("lua", ERR_ERROR, "Error allocing list for %s.", buf); |
2da56f0d CP |
216 | return NULL; |
217 | } | |
218 | ||
d324e17b | 219 | n->name = getsstring(buf, LUA_PATHLEN); |
2da56f0d | 220 | if(!n->name) { |
d324e17b | 221 | Error("lua", ERR_ERROR, "Error allocing name item for %s.", buf); |
d0e17ef9 | 222 | luafree(n); |
2da56f0d CP |
223 | return NULL; |
224 | } | |
d0d1e2a3 | 225 | n->calls = 0; |
2da56f0d | 226 | |
fe0f6b25 CP |
227 | timerclear(&n->ru_utime); |
228 | timerclear(&n->ru_stime); | |
229 | ||
c673fb9b | 230 | lua_loadlibs(l); |
f9f8ee13 | 231 | lua_registerdebug(l); |
2da56f0d | 232 | lua_registercommands(l); |
0225bed3 | 233 | lua_registerlocalcommands(l); |
55cee062 | 234 | lua_registerdbcommands(l); |
c7ec7d64 | 235 | lua_registersocketcommands(l); |
3cf6947a | 236 | lua_registercryptocommands(l); |
72054e5b | 237 | lua_registerschedulercommands(l); |
0225bed3 | 238 | |
41bfdb81 GB |
239 | args[0] = file; |
240 | args[1] = l; | |
241 | triggerhook(HOOK_LUA_LOADSCRIPT, args); | |
242 | ||
9887536a | 243 | #ifdef LUA_USEJIT |
6269435f CP |
244 | lua_require(l, "lib/jit"); |
245 | #endif | |
246 | ||
247 | lua_require(l, "lib/bootstrap"); | |
248 | ||
2da56f0d CP |
249 | snprintf(fullpath, sizeof(fullpath), "%s/%s%s", cpath->content, file, suffix->content); |
250 | if(luaL_loadfile(l, fullpath)) { | |
251 | Error("lua", ERR_ERROR, "Error loading %s.", file); | |
252 | lua_close(l); | |
253 | freesstring(n->name); | |
d0e17ef9 | 254 | luafree(n); |
2da56f0d CP |
255 | return NULL; |
256 | } | |
257 | ||
2da56f0d CP |
258 | n->l = l; |
259 | ||
260 | n->next = NULL; | |
261 | n->prev = lua_tail; | |
0225bed3 | 262 | n->nicks = NULL; |
065c0091 | 263 | n->sockets = NULL; |
72054e5b | 264 | n->schedulers = NULL; |
2da56f0d CP |
265 | |
266 | if(!lua_head) { | |
267 | lua_head = n; | |
268 | } else { | |
269 | lua_tail->next = n; | |
270 | } | |
271 | ||
272 | lua_tail = n; | |
273 | ||
55cee062 CP |
274 | top = lua_gettop(l); |
275 | ||
276 | if(lua_pcall(l, 0, 0, 0)) { | |
277 | Error("lua", ERR_ERROR, "Error pcalling: %s.", file); | |
278 | lua_close(l); | |
279 | freesstring(n->name); | |
c07dd8fd CP |
280 | |
281 | if(lua_head == n) | |
282 | lua_head = NULL; | |
283 | ||
284 | lua_tail = n->prev; | |
285 | if(lua_tail) | |
286 | lua_tail->next = NULL; | |
287 | ||
d0e17ef9 | 288 | luafree(n); |
55cee062 CP |
289 | return NULL; |
290 | } | |
291 | ||
292 | lua_settop(l, top); | |
293 | ||
294 | Error("lua", ERR_INFO, "Loaded %s.", file); | |
2da56f0d CP |
295 | lua_onload(l); |
296 | ||
297 | return l; | |
298 | } | |
299 | ||
300 | void lua_unloadscript(lua_list *l) { | |
6e1aa3b3 GB |
301 | triggerhook(HOOK_LUA_UNLOADSCRIPT, l->l); |
302 | ||
2da56f0d | 303 | lua_onunload(l->l); |
0225bed3 | 304 | lua_deregisternicks(l); |
065c0091 | 305 | lua_socket_closeall(l); |
72054e5b | 306 | lua_scheduler_freeall(l); |
2da56f0d CP |
307 | lua_close(l->l); |
308 | freesstring(l->name); | |
309 | ||
310 | /* well, at least it's O(1) */ | |
311 | ||
312 | if(!l->prev) { /* head */ | |
313 | lua_head = l->next; | |
314 | if(!lua_head) { | |
315 | lua_tail = NULL; | |
316 | } else { | |
317 | lua_head->prev = NULL; | |
318 | } | |
319 | } else { | |
320 | if(!l->next) { /* tail */ | |
321 | lua_tail = lua_tail->prev; | |
322 | if(!lua_tail) { | |
323 | lua_head = NULL; | |
324 | } else { | |
325 | lua_tail->next = NULL; | |
326 | } | |
327 | } else { | |
328 | l->prev->next = l->next; | |
329 | l->next->prev = l->prev; | |
330 | } | |
331 | } | |
332 | ||
d0e17ef9 | 333 | luafree(l); |
2da56f0d CP |
334 | } |
335 | ||
d324e17b CP |
336 | void lua_setpath(void) { |
337 | char fullpath[LUA_PATHLEN]; | |
a25981bf | 338 | |
d324e17b CP |
339 | snprintf(fullpath, sizeof(fullpath), "%s/?%s", cpath->content, suffix->content); |
340 | setenv("LUA_PATH", fullpath, 1); | |
2da56f0d CP |
341 | } |
342 | ||
343 | lua_list *lua_scriptloaded(char *name) { | |
344 | lua_list *l; | |
345 | ||
346 | for(l=lua_head;l;l=l->next) | |
347 | if(!strcmp(l->name->content, name)) | |
348 | return l; | |
349 | ||
350 | return NULL; | |
351 | } | |
352 | ||
c673fb9b CP |
353 | void lua_loadlibs(lua_State *l) { |
354 | const luaL_Reg *lib = ourlibs; | |
355 | ||
356 | for (;lib->func;lib++) { | |
357 | lua_pushcfunction(l, lib->func); | |
358 | lua_pushstring(l, lib->name); | |
359 | lua_call(l, 1, 0); | |
360 | } | |
361 | } | |
6269435f CP |
362 | |
363 | void lua_require(lua_State *l, char *module) { | |
364 | int top = lua_gettop(l); | |
365 | ||
366 | lua_getglobal(l, "require"); | |
367 | lua_pushstring(l, module); | |
368 | ||
369 | if(lua_pcall(l, 1, 1, 0)) | |
370 | Error("lua", ERR_ERROR, "Error requiring %s: %s", module, lua_tostring(l, -1)); | |
371 | ||
372 | lua_settop(l, top); | |
373 | } | |
374 | ||
9887536a CP |
375 | void lua_setupdebugsocket(void) { |
376 | #ifdef LUA_DEBUGSOCKET | |
377 | ||
378 | debugsocket = socket(AF_INET, SOCK_DGRAM, 0); | |
379 | if(debugsocket < 0) { | |
380 | debugsocket = -1; | |
381 | Error("lua", ERR_ERROR, "Cannot create debug socket."); | |
382 | ||
383 | return; | |
384 | } | |
385 | ||
386 | memset(&debugsocketdest, 0, sizeof(debugsocketdest)); | |
387 | ||
388 | debugsocketdest.sin_family = AF_INET; | |
389 | debugsocketdest.sin_port = htons(LUA_DEBUGSOCKET_PORT); | |
390 | debugsocketdest.sin_addr.s_addr = inet_addr(LUA_DEBUGSOCKET_ADDRESS); | |
391 | ||
392 | #endif | |
393 | } | |
394 | ||
395 | void lua_freedebugsocket(void) { | |
396 | #ifdef LUA_DEBUGSOCKET | |
397 | ||
398 | if(debugsocket == -1) | |
399 | return; | |
400 | ||
401 | close(debugsocket); | |
402 | ||
403 | ||
404 | debugsocket = -1; | |
405 | ||
406 | #endif | |
407 | } | |
408 | ||
409 | #ifdef LUA_DEBUGSOCKET | |
410 | void lua_debugoutput(char *format, ...) { | |
411 | char buf[1024]; | |
412 | va_list va; | |
413 | int size; | |
414 | ||
415 | if(debugsocket == -1) | |
416 | return; | |
417 | ||
418 | va_start(va, format); | |
419 | size = vsnprintf(buf, sizeof(buf), format, va); | |
420 | va_end(va); | |
421 | ||
422 | if(size >= sizeof(buf)) | |
423 | size = sizeof(buf) - 1; | |
424 | ||
425 | if(size > 0) | |
426 | sendto(debugsocket, buf, size, 0, (struct sockaddr *)&debugsocketdest, sizeof(debugsocketdest)); | |
427 | } | |
428 | #endif | |
429 | ||
d0d1e2a3 | 430 | lua_list *lua_listfromstate(lua_State *l) { |
9887536a CP |
431 | lua_list *i = lua_head; |
432 | for(;i;i=i->next) | |
433 | if(i->l == l) | |
d0d1e2a3 | 434 | return i; |
9887536a | 435 | |
d0d1e2a3 | 436 | return &dummy; |
9887536a | 437 | } |
6269435f | 438 | |
55cee062 CP |
439 | int lua_listexists(lua_list *l) { |
440 | lua_list *i; | |
441 | ||
442 | for(i=lua_head;i;i=i->next) | |
443 | if(i == l) | |
444 | return 1; | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
0225bed3 CP |
449 | int lua_lineok(const char *data) { |
450 | if(strchr(data, '\r') || strchr(data, '\n')) | |
451 | return 0; | |
452 | return 1; | |
453 | } | |
454 | ||
4f556cb0 | 455 | int lua_debugpcall(lua_State *l, char *message, int a, int b, int c) { |
ea15be33 CP |
456 | lua_list *l2 = lua_listfromstate(l); |
457 | int ret; | |
458 | ||
459 | #ifdef LUA_DEBUGSOCKET | |
460 | DEBUGOUT("%s: %s\n", l2->name->content, message); | |
461 | #endif | |
462 | ||
463 | #ifdef LUA_PROFILE | |
464 | ACCOUNTING_START(l2); | |
465 | #endif | |
466 | ||
467 | ret = lua_pcall(l, a, b, c); | |
468 | ||
469 | #ifdef LUA_PROFILE | |
470 | ACCOUNTING_STOP(l2); | |
471 | #endif | |
472 | ||
473 | return ret; | |
474 | } | |
0225bed3 | 475 |