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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 | ||
7 | #include "../core/config.h" | |
8 | #include "../core/error.h" | |
9 | #include "../core/hooks.h" | |
10 | #include "../lib/array.h" | |
11 | #include "../lib/irc_string.h" | |
12 | #include "../core/schedule.h" | |
87698d77 | 13 | #include "../lib/version.h" |
2da56f0d CP |
14 | |
15 | #include "lua.h" | |
16 | ||
e3a394dc | 17 | MODULE_VERSION(LUA_FULLVERSION); |
87698d77 | 18 | |
9887536a CP |
19 | #ifdef LUA_DEBUGSOCKET |
20 | ||
21 | #include <sys/types.h> | |
22 | #include <sys/socket.h> | |
23 | #include <netinet/in.h> | |
24 | #include <arpa/inet.h> | |
25 | #include <netdb.h> | |
26 | #include <unistd.h> | |
27 | #include <stdarg.h> | |
28 | ||
29 | #endif | |
30 | ||
2da56f0d CP |
31 | void lua_startup(void *arg); |
32 | void lua_loadscripts(void); | |
2da56f0d | 33 | void lua_registercommands(lua_State *l); |
55cee062 | 34 | void lua_registerdbcommands(lua_State *l); |
30a59b87 | 35 | void lua_initnickpusher(void); |
ec91b2e4 | 36 | void lua_initchanpusher(void); |
c673fb9b | 37 | void lua_loadlibs(lua_State *l); |
6269435f | 38 | void lua_require(lua_State *l, char *module); |
2da56f0d CP |
39 | |
40 | void lua_startbot(void *arg); | |
41 | void lua_destroybot(void); | |
42 | void lua_startcontrol(void); | |
43 | void lua_destroycontrol(void); | |
44 | ||
45 | void lua_onunload(lua_State *l); | |
46 | void lua_onload(lua_State *l); | |
47 | ||
a25981bf | 48 | void lua_setpath(lua_State *l); |
2da56f0d | 49 | |
9887536a CP |
50 | void lua_setupdebugsocket(void); |
51 | void lua_freedebugsocket(void); | |
52 | ||
0225bed3 CP |
53 | void lua_deregisternicks(lua_list *l); |
54 | void lua_registerlocalcommands(lua_State *ps); | |
f9f8ee13 | 55 | void lua_registerdebug(lua_State *ps); |
065c0091 CP |
56 | void lua_socket_closeall(lua_list *l); |
57 | void lua_registersocketcommands(lua_State *ps); | |
0225bed3 | 58 | |
9887536a CP |
59 | #ifdef LUA_DEBUGSOCKET |
60 | ||
61 | struct sockaddr_in debugsocketdest; | |
62 | int debugsocket = -1; | |
63 | ||
64 | #endif | |
65 | ||
2da56f0d CP |
66 | lua_list *lua_head = NULL, *lua_tail = NULL; |
67 | ||
a25981bf | 68 | sstring *cpath = NULL, *suffix = NULL; |
2da56f0d CP |
69 | |
70 | void *startsched = NULL; | |
71 | ||
a25981bf CP |
72 | int loaded = 0; |
73 | ||
fe0f6b25 CP |
74 | struct rusage r_usages; |
75 | struct rusage r_usagee; | |
76 | ||
c673fb9b CP |
77 | static const luaL_Reg ourlibs[] = { |
78 | {"", luaopen_base}, | |
79 | {LUA_LOADLIBNAME, luaopen_package}, | |
80 | {LUA_TABLIBNAME, luaopen_table}, | |
81 | {LUA_IOLIBNAME, luaopen_io}, | |
82 | {LUA_OSLIBNAME, luaopen_os}, | |
83 | {LUA_STRLIBNAME, luaopen_string}, | |
84 | {LUA_MATHLIBNAME, luaopen_math}, | |
9887536a | 85 | #ifdef LUA_USEJIT |
6269435f CP |
86 | {LUA_JITLIBNAME, luaopen_jit}, |
87 | #endif | |
c673fb9b CP |
88 | {NULL, NULL} |
89 | }; | |
d0d1e2a3 CP |
90 | |
91 | lua_list dummy; | |
c673fb9b | 92 | |
2da56f0d | 93 | void _init() { |
9887536a | 94 | lua_setupdebugsocket(); |
30a59b87 | 95 | lua_initnickpusher(); |
ec91b2e4 | 96 | lua_initchanpusher(); |
9887536a | 97 | |
d0d1e2a3 CP |
98 | dummy.name = getsstring("???", 10); |
99 | if(!dummy.name) { | |
100 | Error("lua", ERR_ERROR, "Cannot set dummy name."); | |
101 | return; | |
102 | } | |
103 | ||
a25981bf CP |
104 | cpath = getcopyconfigitem("lua", "scriptdir", "", 500); |
105 | ||
106 | if(!cpath || !cpath->content || !cpath->content[0]) { | |
107 | Error("lua", ERR_ERROR, "Error loading path."); | |
108 | return; | |
109 | } | |
110 | ||
111 | suffix = getcopyconfigitem("lua", "scriptsuffix", ".lua", 10); | |
112 | if(!suffix) { | |
113 | Error("lua", ERR_ERROR, "Error loading suffix."); | |
114 | return; | |
115 | } | |
116 | ||
117 | loaded = 1; | |
118 | ||
2da56f0d CP |
119 | startsched = scheduleoneshot(time(NULL) + 1, &lua_startup, NULL); |
120 | } | |
121 | ||
122 | void lua_startup(void *arg) { | |
2da56f0d CP |
123 | startsched = NULL; |
124 | ||
2da56f0d CP |
125 | lua_startcontrol(); |
126 | lua_startbot(NULL); | |
127 | ||
a25981bf | 128 | lua_loadscripts(); |
2da56f0d CP |
129 | } |
130 | ||
131 | #ifdef BROKEN_DLCLOSE | |
132 | void __fini() { | |
133 | #else | |
134 | void _fini() { | |
135 | #endif | |
2da56f0d | 136 | |
a25981bf CP |
137 | if(loaded) { |
138 | if(startsched) | |
139 | deleteschedule(startsched, &lua_startup, NULL); | |
2da56f0d | 140 | |
a25981bf CP |
141 | while(lua_head) |
142 | lua_unloadscript(lua_head); | |
2da56f0d | 143 | |
a25981bf CP |
144 | lua_destroybot(); |
145 | lua_destroycontrol(); | |
2da56f0d CP |
146 | } |
147 | ||
a25981bf CP |
148 | freesstring(cpath); |
149 | freesstring(suffix); | |
d0d1e2a3 | 150 | freesstring(dummy.name); |
9887536a CP |
151 | |
152 | lua_freedebugsocket(); | |
2da56f0d CP |
153 | } |
154 | ||
155 | void lua_loadscripts(void) { | |
156 | array *ls; | |
157 | ||
158 | ls = getconfigitems("lua", "script"); | |
159 | if(!ls) { | |
160 | Error("lua", ERR_INFO, "No scripts loaded."); | |
161 | } else { | |
162 | sstring **scripts = (sstring **)(ls->content); | |
163 | int i; | |
164 | for(i=0;i<ls->cursi;i++) | |
165 | lua_loadscript(scripts[i]->content); | |
166 | } | |
167 | } | |
168 | ||
169 | lua_State *lua_loadscript(char *file) { | |
170 | char fullpath[LUA_PATHLEN]; | |
171 | int top; | |
172 | lua_State *l; | |
173 | lua_list *n; | |
174 | ||
175 | if(!cpath || !suffix) | |
176 | return NULL; | |
177 | ||
178 | delchars(file, "./\\;"); | |
179 | ||
180 | if(lua_scriptloaded(file)) | |
181 | return NULL; | |
182 | ||
183 | l = lua_open(); | |
184 | if(!l) | |
185 | return NULL; | |
186 | ||
187 | n = (lua_list *)malloc(sizeof(lua_list));; | |
188 | if(!n) { | |
189 | Error("lua", ERR_ERROR, "Error allocing list for %s.", file); | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | n->name = getsstring(file, LUA_PATHLEN); | |
194 | if(!n->name) { | |
195 | Error("lua", ERR_ERROR, "Error allocing name item for %s.", file); | |
196 | free(n); | |
197 | return NULL; | |
198 | } | |
d0d1e2a3 | 199 | n->calls = 0; |
2da56f0d | 200 | |
fe0f6b25 CP |
201 | timerclear(&n->ru_utime); |
202 | timerclear(&n->ru_stime); | |
203 | ||
c673fb9b | 204 | lua_loadlibs(l); |
f9f8ee13 | 205 | lua_registerdebug(l); |
2da56f0d | 206 | lua_registercommands(l); |
0225bed3 | 207 | lua_registerlocalcommands(l); |
55cee062 | 208 | lua_registerdbcommands(l); |
c7ec7d64 | 209 | lua_registersocketcommands(l); |
0225bed3 | 210 | |
a25981bf | 211 | lua_setpath(l); |
2da56f0d | 212 | |
9887536a | 213 | #ifdef LUA_USEJIT |
6269435f CP |
214 | lua_require(l, "lib/jit"); |
215 | #endif | |
216 | ||
217 | lua_require(l, "lib/bootstrap"); | |
218 | ||
2da56f0d CP |
219 | snprintf(fullpath, sizeof(fullpath), "%s/%s%s", cpath->content, file, suffix->content); |
220 | if(luaL_loadfile(l, fullpath)) { | |
221 | Error("lua", ERR_ERROR, "Error loading %s.", file); | |
222 | lua_close(l); | |
223 | freesstring(n->name); | |
224 | free(n); | |
225 | return NULL; | |
226 | } | |
227 | ||
2da56f0d CP |
228 | n->l = l; |
229 | ||
230 | n->next = NULL; | |
231 | n->prev = lua_tail; | |
0225bed3 | 232 | n->nicks = NULL; |
065c0091 | 233 | n->sockets = NULL; |
2da56f0d CP |
234 | |
235 | if(!lua_head) { | |
236 | lua_head = n; | |
237 | } else { | |
238 | lua_tail->next = n; | |
239 | } | |
240 | ||
241 | lua_tail = n; | |
242 | ||
55cee062 CP |
243 | top = lua_gettop(l); |
244 | ||
245 | if(lua_pcall(l, 0, 0, 0)) { | |
246 | Error("lua", ERR_ERROR, "Error pcalling: %s.", file); | |
247 | lua_close(l); | |
248 | freesstring(n->name); | |
249 | free(n); | |
250 | return NULL; | |
251 | } | |
252 | ||
253 | lua_settop(l, top); | |
254 | ||
255 | Error("lua", ERR_INFO, "Loaded %s.", file); | |
2da56f0d CP |
256 | lua_onload(l); |
257 | ||
258 | return l; | |
259 | } | |
260 | ||
261 | void lua_unloadscript(lua_list *l) { | |
262 | lua_onunload(l->l); | |
0225bed3 | 263 | lua_deregisternicks(l); |
065c0091 | 264 | lua_socket_closeall(l); |
2da56f0d CP |
265 | lua_close(l->l); |
266 | freesstring(l->name); | |
267 | ||
268 | /* well, at least it's O(1) */ | |
269 | ||
270 | if(!l->prev) { /* head */ | |
271 | lua_head = l->next; | |
272 | if(!lua_head) { | |
273 | lua_tail = NULL; | |
274 | } else { | |
275 | lua_head->prev = NULL; | |
276 | } | |
277 | } else { | |
278 | if(!l->next) { /* tail */ | |
279 | lua_tail = lua_tail->prev; | |
280 | if(!lua_tail) { | |
281 | lua_head = NULL; | |
282 | } else { | |
283 | lua_tail->next = NULL; | |
284 | } | |
285 | } else { | |
286 | l->prev->next = l->next; | |
287 | l->next->prev = l->prev; | |
288 | } | |
289 | } | |
290 | ||
291 | free(l); | |
292 | } | |
293 | ||
a25981bf CP |
294 | void lua_setpath(lua_State *l) { |
295 | char fullpath[LUA_PATHLEN], *prev = NULL; | |
2da56f0d | 296 | |
a25981bf | 297 | int top = lua_gettop(l); |
2da56f0d | 298 | |
a25981bf CP |
299 | lua_getglobal(l, "package"); |
300 | if(!lua_istable(l, 1)) { | |
301 | Error("lua", ERR_ERROR, "Unable to set package.path (package is not a table)."); | |
302 | return; | |
2da56f0d CP |
303 | } |
304 | ||
a25981bf CP |
305 | lua_pushstring(l, "path"); |
306 | lua_gettable(l, -2); | |
2da56f0d | 307 | |
a25981bf CP |
308 | if(lua_isstring(l, -1)) |
309 | prev = (char *)lua_tostring(l, -1); | |
310 | ||
311 | if(prev) { | |
312 | snprintf(fullpath, sizeof(fullpath), "%s;%s/?%s", prev, cpath->content, suffix->content); | |
2da56f0d | 313 | } else { |
c673fb9b | 314 | snprintf(fullpath, sizeof(fullpath), "%s/?%s", cpath->content, suffix->content); |
2da56f0d | 315 | } |
2da56f0d | 316 | |
2f51c193 CP |
317 | /* pop broke! */ |
318 | ||
319 | lua_getglobal(l, "package"); | |
320 | if(!lua_istable(l, 1)) { | |
321 | Error("lua", ERR_ERROR, "Unable to set package.path (package is not a table)."); | |
322 | return; | |
323 | } | |
324 | ||
325 | lua_pushstring(l, "path"); | |
2da56f0d | 326 | |
a25981bf CP |
327 | lua_pushstring(l, fullpath); |
328 | lua_settable(l, -3); | |
329 | ||
330 | lua_settop(l, top); | |
2da56f0d CP |
331 | } |
332 | ||
333 | lua_list *lua_scriptloaded(char *name) { | |
334 | lua_list *l; | |
335 | ||
336 | for(l=lua_head;l;l=l->next) | |
337 | if(!strcmp(l->name->content, name)) | |
338 | return l; | |
339 | ||
340 | return NULL; | |
341 | } | |
342 | ||
c673fb9b CP |
343 | void lua_loadlibs(lua_State *l) { |
344 | const luaL_Reg *lib = ourlibs; | |
345 | ||
346 | for (;lib->func;lib++) { | |
347 | lua_pushcfunction(l, lib->func); | |
348 | lua_pushstring(l, lib->name); | |
349 | lua_call(l, 1, 0); | |
350 | } | |
351 | } | |
6269435f CP |
352 | |
353 | void lua_require(lua_State *l, char *module) { | |
354 | int top = lua_gettop(l); | |
355 | ||
356 | lua_getglobal(l, "require"); | |
357 | lua_pushstring(l, module); | |
358 | ||
359 | if(lua_pcall(l, 1, 1, 0)) | |
360 | Error("lua", ERR_ERROR, "Error requiring %s: %s", module, lua_tostring(l, -1)); | |
361 | ||
362 | lua_settop(l, top); | |
363 | } | |
364 | ||
9887536a CP |
365 | void lua_setupdebugsocket(void) { |
366 | #ifdef LUA_DEBUGSOCKET | |
367 | ||
368 | debugsocket = socket(AF_INET, SOCK_DGRAM, 0); | |
369 | if(debugsocket < 0) { | |
370 | debugsocket = -1; | |
371 | Error("lua", ERR_ERROR, "Cannot create debug socket."); | |
372 | ||
373 | return; | |
374 | } | |
375 | ||
376 | memset(&debugsocketdest, 0, sizeof(debugsocketdest)); | |
377 | ||
378 | debugsocketdest.sin_family = AF_INET; | |
379 | debugsocketdest.sin_port = htons(LUA_DEBUGSOCKET_PORT); | |
380 | debugsocketdest.sin_addr.s_addr = inet_addr(LUA_DEBUGSOCKET_ADDRESS); | |
381 | ||
382 | #endif | |
383 | } | |
384 | ||
385 | void lua_freedebugsocket(void) { | |
386 | #ifdef LUA_DEBUGSOCKET | |
387 | ||
388 | if(debugsocket == -1) | |
389 | return; | |
390 | ||
391 | close(debugsocket); | |
392 | ||
393 | ||
394 | debugsocket = -1; | |
395 | ||
396 | #endif | |
397 | } | |
398 | ||
399 | #ifdef LUA_DEBUGSOCKET | |
400 | void lua_debugoutput(char *format, ...) { | |
401 | char buf[1024]; | |
402 | va_list va; | |
403 | int size; | |
404 | ||
405 | if(debugsocket == -1) | |
406 | return; | |
407 | ||
408 | va_start(va, format); | |
409 | size = vsnprintf(buf, sizeof(buf), format, va); | |
410 | va_end(va); | |
411 | ||
412 | if(size >= sizeof(buf)) | |
413 | size = sizeof(buf) - 1; | |
414 | ||
415 | if(size > 0) | |
416 | sendto(debugsocket, buf, size, 0, (struct sockaddr *)&debugsocketdest, sizeof(debugsocketdest)); | |
417 | } | |
418 | #endif | |
419 | ||
d0d1e2a3 | 420 | lua_list *lua_listfromstate(lua_State *l) { |
9887536a CP |
421 | lua_list *i = lua_head; |
422 | for(;i;i=i->next) | |
423 | if(i->l == l) | |
d0d1e2a3 | 424 | return i; |
9887536a | 425 | |
d0d1e2a3 | 426 | return &dummy; |
9887536a | 427 | } |
6269435f | 428 | |
55cee062 CP |
429 | int lua_listexists(lua_list *l) { |
430 | lua_list *i; | |
431 | ||
432 | for(i=lua_head;i;i=i->next) | |
433 | if(i == l) | |
434 | return 1; | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
0225bed3 CP |
439 | int lua_lineok(const char *data) { |
440 | if(strchr(data, '\r') || strchr(data, '\n')) | |
441 | return 0; | |
442 | return 1; | |
443 | } | |
444 | ||
ea15be33 CP |
445 | INLINE int lua_debugpcall(lua_State *l, char *message, int a, int b, int c) { |
446 | lua_list *l2 = lua_listfromstate(l); | |
447 | int ret; | |
448 | ||
449 | #ifdef LUA_DEBUGSOCKET | |
450 | DEBUGOUT("%s: %s\n", l2->name->content, message); | |
451 | #endif | |
452 | ||
453 | #ifdef LUA_PROFILE | |
454 | ACCOUNTING_START(l2); | |
455 | #endif | |
456 | ||
457 | ret = lua_pcall(l, a, b, c); | |
458 | ||
459 | #ifdef LUA_PROFILE | |
460 | ACCOUNTING_STOP(l2); | |
461 | #endif | |
462 | ||
463 | return ret; | |
464 | } | |
0225bed3 | 465 |