]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * modules.c: A module loader. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | */ | |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "modules.h" | |
27 | #include "logger.h" | |
28 | #include "ircd.h" | |
29 | #include "client.h" | |
30 | #include "send.h" | |
31 | #include "s_conf.h" | |
32 | #include "s_newconf.h" | |
33 | #include "numeric.h" | |
34 | #include "parse.h" | |
35 | #include "ircd_defs.h" | |
36 | #include "match.h" | |
37 | #include "s_serv.h" | |
38 | #include "capability.h" | |
39 | ||
40 | #include <ltdl.h> | |
41 | ||
42 | #ifndef LT_MODULE_EXT | |
43 | # error "Charybdis requires loadable module support." | |
44 | #endif | |
45 | ||
46 | struct module **modlist = NULL; | |
47 | ||
48 | static const char *core_module_table[] = { | |
49 | "m_ban", | |
50 | "m_die", | |
51 | "m_error", | |
52 | "m_join", | |
53 | "m_kick", | |
54 | "m_kill", | |
55 | "m_message", | |
56 | "m_mode", | |
57 | "m_nick", | |
58 | "m_part", | |
59 | "m_quit", | |
60 | "m_server", | |
61 | "m_squit", | |
62 | NULL | |
63 | }; | |
64 | ||
65 | #define MOD_WARN_DELTA (90 * 86400) /* time in seconds, 86400 seconds in a day */ | |
66 | ||
67 | #define MODS_INCREMENT 10 | |
68 | int num_mods = 0; | |
69 | int max_mods = MODS_INCREMENT; | |
70 | ||
71 | static rb_dlink_list mod_paths; | |
72 | ||
73 | static void mo_modload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
74 | static void mo_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
75 | static void mo_modreload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
76 | static void mo_modunload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
77 | static void mo_modrestart(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
78 | ||
79 | static void me_modload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
80 | static void me_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
81 | static void me_modreload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
82 | static void me_modunload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
83 | static void me_modrestart(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
84 | ||
85 | static void do_modload(struct Client *, const char *); | |
86 | static void do_modunload(struct Client *, const char *); | |
87 | static void do_modreload(struct Client *, const char *); | |
88 | static void do_modlist(struct Client *, const char *); | |
89 | static void do_modrestart(struct Client *); | |
90 | ||
91 | struct Message modload_msgtab = { | |
92 | "MODLOAD", 0, 0, 0, 0, | |
93 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modload, 2}, {mo_modload, 2}} | |
94 | }; | |
95 | ||
96 | struct Message modunload_msgtab = { | |
97 | "MODUNLOAD", 0, 0, 0, 0, | |
98 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modunload, 2}, {mo_modunload, 2}} | |
99 | }; | |
100 | ||
101 | struct Message modreload_msgtab = { | |
102 | "MODRELOAD", 0, 0, 0, 0, | |
103 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modreload, 2}, {mo_modreload, 2}} | |
104 | }; | |
105 | ||
106 | struct Message modlist_msgtab = { | |
107 | "MODLIST", 0, 0, 0, 0, | |
108 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modlist, 0}, {mo_modlist, 0}} | |
109 | }; | |
110 | ||
111 | struct Message modrestart_msgtab = { | |
112 | "MODRESTART", 0, 0, 0, 0, | |
113 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modrestart, 0}, {mo_modrestart, 0}} | |
114 | }; | |
115 | ||
116 | void | |
117 | modules_init(void) | |
118 | { | |
119 | if(lt_dlinit()) | |
120 | { | |
121 | ilog(L_MAIN, "lt_dlinit failed"); | |
122 | exit(0); | |
123 | } | |
124 | ||
125 | mod_add_cmd(&modload_msgtab); | |
126 | mod_add_cmd(&modunload_msgtab); | |
127 | mod_add_cmd(&modreload_msgtab); | |
128 | mod_add_cmd(&modlist_msgtab); | |
129 | mod_add_cmd(&modrestart_msgtab); | |
130 | ||
131 | /* Add the default paths we look in to the module system --nenolod */ | |
132 | mod_add_path(ircd_paths[IRCD_PATH_MODULES]); | |
133 | mod_add_path(ircd_paths[IRCD_PATH_AUTOLOAD_MODULES]); | |
134 | } | |
135 | ||
136 | /* mod_find_path() | |
137 | * | |
138 | * input - path | |
139 | * output - none | |
140 | * side effects - returns a module path from path | |
141 | */ | |
142 | static char * | |
143 | mod_find_path(const char *path) | |
144 | { | |
145 | rb_dlink_node *ptr; | |
146 | char *mpath; | |
147 | ||
148 | RB_DLINK_FOREACH(ptr, mod_paths.head) | |
149 | { | |
150 | mpath = ptr->data; | |
151 | ||
152 | if(!strcmp(path, mpath)) | |
153 | return mpath; | |
154 | } | |
155 | ||
156 | return NULL; | |
157 | } | |
158 | ||
159 | /* mod_add_path | |
160 | * | |
161 | * input - path | |
162 | * ouput - | |
163 | * side effects - adds path to list | |
164 | */ | |
165 | void | |
166 | mod_add_path(const char *path) | |
167 | { | |
168 | char *pathst; | |
169 | ||
170 | if(mod_find_path(path)) | |
171 | return; | |
172 | ||
173 | pathst = rb_strdup(path); | |
174 | rb_dlinkAddAlloc(pathst, &mod_paths); | |
175 | } | |
176 | ||
177 | /* mod_clear_paths() | |
178 | * | |
179 | * input - | |
180 | * output - | |
181 | * side effects - clear the lists of paths | |
182 | */ | |
183 | void | |
184 | mod_clear_paths(void) | |
185 | { | |
186 | rb_dlink_node *ptr, *next_ptr; | |
187 | ||
188 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, mod_paths.head) | |
189 | { | |
190 | rb_free(ptr->data); | |
191 | rb_free_rb_dlink_node(ptr); | |
192 | } | |
193 | ||
194 | mod_paths.head = mod_paths.tail = NULL; | |
195 | mod_paths.length = 0; | |
196 | } | |
197 | ||
198 | /* findmodule_byname | |
199 | * | |
200 | * input - | |
201 | * output - | |
202 | * side effects - | |
203 | */ | |
204 | ||
205 | int | |
206 | findmodule_byname(const char *name) | |
207 | { | |
208 | int i; | |
209 | char name_ext[PATH_MAX + 1]; | |
210 | ||
211 | rb_strlcpy(name_ext, name, sizeof name_ext); | |
212 | rb_strlcat(name_ext, LT_MODULE_EXT, sizeof name_ext); | |
213 | ||
214 | for (i = 0; i < num_mods; i++) | |
215 | { | |
216 | if(!irccmp(modlist[i]->name, name)) | |
217 | return i; | |
218 | ||
219 | if(!irccmp(modlist[i]->name, name_ext)) | |
220 | return i; | |
221 | } | |
222 | ||
223 | return -1; | |
224 | } | |
225 | ||
226 | /* load_all_modules() | |
227 | * | |
228 | * input - | |
229 | * output - | |
230 | * side effects - | |
231 | */ | |
232 | void | |
233 | load_all_modules(int warn) | |
234 | { | |
235 | DIR *system_module_dir = NULL; | |
236 | struct dirent *ldirent = NULL; | |
237 | char module_fq_name[PATH_MAX + 1]; | |
238 | size_t module_ext_len = strlen(LT_MODULE_EXT); | |
239 | ||
240 | modules_init(); | |
241 | ||
242 | modlist = (struct module **) rb_malloc(sizeof(struct module *) * (MODS_INCREMENT)); | |
243 | ||
244 | max_mods = MODS_INCREMENT; | |
245 | ||
246 | system_module_dir = opendir(ircd_paths[IRCD_PATH_AUTOLOAD_MODULES]); | |
247 | ||
248 | if(system_module_dir == NULL) | |
249 | { | |
250 | ilog(L_MAIN, "Could not load modules from %s: %s", ircd_paths[IRCD_PATH_AUTOLOAD_MODULES], strerror(errno)); | |
251 | return; | |
252 | } | |
253 | ||
254 | while ((ldirent = readdir(system_module_dir)) != NULL) | |
255 | { | |
256 | size_t len; | |
257 | ||
258 | len = strlen(ldirent->d_name); | |
259 | if(len > module_ext_len && !strcasecmp(ldirent->d_name + (len - module_ext_len), LT_MODULE_EXT)) | |
260 | { | |
261 | (void) snprintf(module_fq_name, sizeof(module_fq_name), "%s%c%s", ircd_paths[IRCD_PATH_AUTOLOAD_MODULES], RB_PATH_SEPARATOR, ldirent->d_name); | |
262 | (void) load_a_module(module_fq_name, warn, MAPI_ORIGIN_CORE, 0); | |
263 | } | |
264 | ||
265 | } | |
266 | (void) closedir(system_module_dir); | |
267 | } | |
268 | ||
269 | /* load_core_modules() | |
270 | * | |
271 | * input - | |
272 | * output - | |
273 | * side effects - core modules are loaded, if any fail, kill ircd | |
274 | */ | |
275 | void | |
276 | load_core_modules(int warn) | |
277 | { | |
278 | char module_name[PATH_MAX]; | |
279 | int i; | |
280 | ||
281 | ||
282 | for (i = 0; core_module_table[i]; i++) | |
283 | { | |
284 | snprintf(module_name, sizeof(module_name), "%s%c%s%s", ircd_paths[IRCD_PATH_MODULES], RB_PATH_SEPARATOR, | |
285 | core_module_table[i], LT_MODULE_EXT); | |
286 | ||
287 | if(load_a_module(module_name, warn, MAPI_ORIGIN_CORE, 1) == -1) | |
288 | { | |
289 | ilog(L_MAIN, | |
290 | "Error loading core module %s: terminating ircd", | |
291 | core_module_table[i]); | |
292 | exit(0); | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | /* load_one_module() | |
298 | * | |
299 | * input - | |
300 | * output - | |
301 | * side effects - | |
302 | */ | |
303 | int | |
304 | load_one_module(const char *path, int origin, int coremodule) | |
305 | { | |
306 | char modpath[PATH_MAX]; | |
307 | rb_dlink_node *pathst; | |
308 | const char *mpath; | |
309 | struct stat statbuf; | |
310 | ||
311 | if (server_state_foreground) | |
312 | inotice("loading module %s ...", path); | |
313 | ||
314 | if(coremodule != 0) | |
315 | { | |
316 | coremodule = 1; | |
317 | origin = MAPI_ORIGIN_CORE; | |
318 | } | |
319 | ||
320 | RB_DLINK_FOREACH(pathst, mod_paths.head) | |
321 | { | |
322 | mpath = pathst->data; | |
323 | ||
324 | snprintf(modpath, sizeof(modpath), "%s/%s%s", mpath, path, LT_MODULE_EXT); | |
325 | if((strstr(modpath, "../") == NULL) && (strstr(modpath, "/..") == NULL)) | |
326 | { | |
327 | if(stat(modpath, &statbuf) == 0) | |
328 | { | |
329 | if(S_ISREG(statbuf.st_mode)) | |
330 | { | |
331 | /* Regular files only please */ | |
332 | return load_a_module(modpath, 1, origin, coremodule); | |
333 | } | |
334 | } | |
335 | ||
336 | } | |
337 | } | |
338 | ||
339 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Cannot locate module %s", path); | |
340 | return -1; | |
341 | } | |
342 | ||
343 | ||
344 | /* load a module .. */ | |
345 | static void | |
346 | mo_modload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
347 | { | |
348 | if(!IsOperAdmin(source_p)) | |
349 | { | |
350 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
351 | me.name, source_p->name, "admin"); | |
352 | return; | |
353 | } | |
354 | ||
355 | if(parc > 2) | |
356 | { | |
357 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
358 | "ENCAP %s MODLOAD %s", parv[2], parv[1]); | |
359 | if (match(parv[2], me.name) == 0) | |
360 | return; | |
361 | } | |
362 | ||
363 | do_modload(source_p, parv[1]); | |
364 | } | |
365 | ||
366 | static void | |
367 | me_modload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
368 | { | |
369 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
370 | { | |
371 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
372 | "to load modules on this server."); | |
373 | return; | |
374 | } | |
375 | ||
376 | do_modload(source_p, parv[1]); | |
377 | } | |
378 | ||
379 | ||
380 | /* unload a module .. */ | |
381 | static void | |
382 | mo_modunload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
383 | { | |
384 | if(!IsOperAdmin(source_p)) | |
385 | { | |
386 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
387 | me.name, source_p->name, "admin"); | |
388 | return; | |
389 | } | |
390 | ||
391 | if(parc > 2) | |
392 | { | |
393 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
394 | "ENCAP %s MODUNLOAD %s", parv[2], parv[1]); | |
395 | if (match(parv[2], me.name) == 0) | |
396 | return; | |
397 | } | |
398 | ||
399 | do_modunload(source_p, parv[1]); | |
400 | } | |
401 | ||
402 | static void | |
403 | me_modunload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
404 | { | |
405 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
406 | { | |
407 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
408 | "to load modules on this server."); | |
409 | return; | |
410 | } | |
411 | ||
412 | do_modunload(source_p, parv[1]); | |
413 | } | |
414 | ||
415 | /* unload and load in one! */ | |
416 | static void | |
417 | mo_modreload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
418 | { | |
419 | if(!IsOperAdmin(source_p)) | |
420 | { | |
421 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
422 | me.name, source_p->name, "admin"); | |
423 | return; | |
424 | } | |
425 | ||
426 | if(parc > 2) | |
427 | { | |
428 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
429 | "ENCAP %s MODRELOAD %s", parv[2], parv[1]); | |
430 | if (match(parv[2], me.name) == 0) | |
431 | return; | |
432 | } | |
433 | ||
434 | do_modreload(source_p, parv[1]); | |
435 | } | |
436 | ||
437 | static void | |
438 | me_modreload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
439 | { | |
440 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
441 | { | |
442 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
443 | "to load modules on this server."); | |
444 | return; | |
445 | } | |
446 | ||
447 | do_modreload(source_p, parv[1]); | |
448 | } | |
449 | ||
450 | /* list modules .. */ | |
451 | static void | |
452 | mo_modlist(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
453 | { | |
454 | if(!IsOperAdmin(source_p)) | |
455 | { | |
456 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
457 | me.name, source_p->name, "admin"); | |
458 | return; | |
459 | } | |
460 | ||
461 | if(parc > 2) | |
462 | { | |
463 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
464 | "ENCAP %s MODLIST %s", parv[2], parv[1]); | |
465 | if (match(parv[2], me.name) == 0) | |
466 | return; | |
467 | } | |
468 | ||
469 | do_modlist(source_p, parc > 1 ? parv[1] : 0); | |
470 | } | |
471 | ||
472 | static void | |
473 | me_modlist(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
474 | { | |
475 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
476 | { | |
477 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
478 | "to load modules on this server."); | |
479 | return; | |
480 | } | |
481 | ||
482 | do_modlist(source_p, parv[1]); | |
483 | } | |
484 | ||
485 | /* unload and reload all modules */ | |
486 | static void | |
487 | mo_modrestart(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
488 | { | |
489 | if(!IsOperAdmin(source_p)) | |
490 | { | |
491 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
492 | me.name, source_p->name, "admin"); | |
493 | return; | |
494 | } | |
495 | ||
496 | if(parc > 1) | |
497 | { | |
498 | sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS, | |
499 | "ENCAP %s MODRESTART", parv[1]); | |
500 | if (match(parv[1], me.name) == 0) | |
501 | return; | |
502 | } | |
503 | ||
504 | do_modrestart(source_p); | |
505 | } | |
506 | ||
507 | static void | |
508 | me_modrestart(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
509 | { | |
510 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
511 | { | |
512 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
513 | "to load modules on this server."); | |
514 | return; | |
515 | } | |
516 | ||
517 | do_modrestart(source_p); | |
518 | } | |
519 | ||
520 | static void | |
521 | do_modload(struct Client *source_p, const char *module) | |
522 | { | |
523 | char *m_bn = rb_basename(module); | |
524 | int origin; | |
525 | ||
526 | if(findmodule_byname(m_bn) != -1) | |
527 | { | |
528 | sendto_one_notice(source_p, ":Module %s is already loaded", m_bn); | |
529 | rb_free(m_bn); | |
530 | return; | |
531 | } | |
532 | ||
533 | origin = strcmp(module, m_bn) == 0 ? MAPI_ORIGIN_CORE : MAPI_ORIGIN_EXTENSION; | |
534 | load_one_module(module, origin, 0); | |
535 | ||
536 | rb_free(m_bn); | |
537 | } | |
538 | ||
539 | static void | |
540 | do_modunload(struct Client *source_p, const char *module) | |
541 | { | |
542 | int modindex; | |
543 | char *m_bn = rb_basename(module); | |
544 | ||
545 | if((modindex = findmodule_byname(m_bn)) == -1) | |
546 | { | |
547 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); | |
548 | rb_free(m_bn); | |
549 | return; | |
550 | } | |
551 | ||
552 | if(modlist[modindex]->core == 1) | |
553 | { | |
554 | sendto_one_notice(source_p, ":Module %s is a core module and may not be unloaded", m_bn); | |
555 | rb_free(m_bn); | |
556 | return; | |
557 | } | |
558 | ||
559 | if(unload_one_module(m_bn, 1) == -1) | |
560 | { | |
561 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); | |
562 | } | |
563 | ||
564 | rb_free(m_bn); | |
565 | } | |
566 | ||
567 | static void | |
568 | do_modreload(struct Client *source_p, const char *module) | |
569 | { | |
570 | int modindex; | |
571 | int check_core; | |
572 | char *m_bn = rb_basename(module); | |
573 | ||
574 | if((modindex = findmodule_byname(m_bn)) == -1) | |
575 | { | |
576 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); | |
577 | rb_free(m_bn); | |
578 | return; | |
579 | } | |
580 | ||
581 | check_core = modlist[modindex]->core; | |
582 | ||
583 | if(unload_one_module(m_bn, 1) == -1) | |
584 | { | |
585 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); | |
586 | rb_free(m_bn); | |
587 | return; | |
588 | } | |
589 | ||
590 | if((load_one_module(m_bn, modlist[modindex]->origin, check_core) == -1) && check_core) | |
591 | { | |
592 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
593 | "Error reloading core module: %s: terminating ircd", m_bn); | |
594 | ilog(L_MAIN, "Error loading core module %s: terminating ircd", m_bn); | |
595 | exit(0); | |
596 | } | |
597 | ||
598 | rb_free(m_bn); | |
599 | } | |
600 | ||
601 | static void | |
602 | do_modrestart(struct Client *source_p) | |
603 | { | |
604 | int modnum; | |
605 | ||
606 | sendto_one_notice(source_p, ":Reloading all modules"); | |
607 | ||
608 | modnum = num_mods; | |
609 | while (num_mods) | |
610 | unload_one_module(modlist[0]->name, 0); | |
611 | ||
612 | load_all_modules(0); | |
613 | load_core_modules(0); | |
614 | rehash(0); | |
615 | ||
616 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, | |
617 | "Module Restart: %d modules unloaded, %d modules loaded", | |
618 | modnum, num_mods); | |
619 | ilog(L_MAIN, "Module Restart: %d modules unloaded, %d modules loaded", modnum, num_mods); | |
620 | } | |
621 | ||
622 | static void | |
623 | do_modlist(struct Client *source_p, const char *pattern) | |
624 | { | |
625 | int i; | |
626 | ||
627 | for (i = 0; i < num_mods; i++) | |
628 | { | |
629 | const char *origin; | |
630 | switch (modlist[i]->origin) | |
631 | { | |
632 | case MAPI_ORIGIN_EXTENSION: | |
633 | origin = "extension"; | |
634 | break; | |
635 | case MAPI_ORIGIN_CORE: | |
636 | origin = "builtin"; | |
637 | break; | |
638 | default: | |
639 | origin = "unknown"; | |
640 | break; | |
641 | } | |
642 | ||
643 | if(pattern) | |
644 | { | |
645 | if(match(pattern, modlist[i]->name)) | |
646 | { | |
647 | sendto_one(source_p, form_str(RPL_MODLIST), | |
648 | me.name, source_p->name, | |
649 | modlist[i]->name, | |
650 | (unsigned long)(uintptr_t)modlist[i]->address, origin, | |
651 | modlist[i]->core ? " (core)" : "", modlist[i]->version, modlist[i]->description); | |
652 | } | |
653 | } | |
654 | else | |
655 | { | |
656 | sendto_one(source_p, form_str(RPL_MODLIST), | |
657 | me.name, source_p->name, modlist[i]->name, | |
658 | (unsigned long)(uintptr_t)modlist[i]->address, origin, | |
659 | modlist[i]->core ? " (core)" : "", modlist[i]->version, modlist[i]->description); | |
660 | } | |
661 | } | |
662 | ||
663 | sendto_one(source_p, form_str(RPL_ENDOFMODLIST), me.name, source_p->name); | |
664 | } | |
665 | ||
666 | static void increase_modlist(void); | |
667 | ||
668 | #define MODS_INCREMENT 10 | |
669 | ||
670 | static char unknown_ver[] = "<unknown>"; | |
671 | static char unknown_description[] = "<none>"; | |
672 | ||
673 | /* unload_one_module() | |
674 | * | |
675 | * inputs - name of module to unload | |
676 | * - 1 to say modules unloaded, 0 to not | |
677 | * output - 0 if successful, -1 if error | |
678 | * side effects - module is unloaded | |
679 | */ | |
680 | int | |
681 | unload_one_module(const char *name, int warn) | |
682 | { | |
683 | int modindex; | |
684 | ||
685 | if((modindex = findmodule_byname(name)) == -1) | |
686 | return -1; | |
687 | ||
688 | /* | |
689 | ** XXX - The type system in C does not allow direct conversion between | |
690 | ** data and function pointers, but as it happens, most C compilers will | |
691 | ** safely do this, however it is a theoretical overlow to cast as we | |
692 | ** must do here. I have library functions to take care of this, but | |
693 | ** despite being more "correct" for the C language, this is more | |
694 | ** practical. Removing the abuse of the ability to cast ANY pointer | |
695 | ** to and from an integer value here will break some compilers. | |
696 | ** -jmallett | |
697 | */ | |
698 | /* Left the comment in but the code isn't here any more -larne */ | |
699 | switch (modlist[modindex]->mapi_version) | |
700 | { | |
701 | case 1: | |
702 | { | |
703 | struct mapi_mheader_av1 *mheader = modlist[modindex]->mapi_header; | |
704 | if(mheader->mapi_command_list) | |
705 | { | |
706 | struct Message **m; | |
707 | for (m = mheader->mapi_command_list; *m; ++m) | |
708 | mod_del_cmd(*m); | |
709 | } | |
710 | ||
711 | /* hook events are never removed, we simply lose the | |
712 | * ability to call them --fl | |
713 | */ | |
714 | if(mheader->mapi_hfn_list) | |
715 | { | |
716 | mapi_hfn_list_av1 *m; | |
717 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
718 | remove_hook(m->hapi_name, m->fn); | |
719 | } | |
720 | ||
721 | if(mheader->mapi_unregister) | |
722 | mheader->mapi_unregister(); | |
723 | break; | |
724 | } | |
725 | case 2: | |
726 | { | |
727 | struct mapi_mheader_av2 *mheader = modlist[modindex]->mapi_header; | |
728 | ||
729 | /* XXX duplicate code :( */ | |
730 | if(mheader->mapi_command_list) | |
731 | { | |
732 | struct Message **m; | |
733 | for (m = mheader->mapi_command_list; *m; ++m) | |
734 | mod_del_cmd(*m); | |
735 | } | |
736 | ||
737 | /* hook events are never removed, we simply lose the | |
738 | * ability to call them --fl | |
739 | */ | |
740 | if(mheader->mapi_hfn_list) | |
741 | { | |
742 | mapi_hfn_list_av1 *m; | |
743 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
744 | remove_hook(m->hapi_name, m->fn); | |
745 | } | |
746 | ||
747 | if(mheader->mapi_unregister) | |
748 | mheader->mapi_unregister(); | |
749 | ||
750 | if(mheader->mapi_cap_list) | |
751 | { | |
752 | mapi_cap_list_av2 *m; | |
753 | for (m = mheader->mapi_cap_list; m->cap_name; ++m) | |
754 | { | |
755 | struct CapabilityIndex *idx; | |
756 | ||
757 | switch (m->cap_index) | |
758 | { | |
759 | case MAPI_CAP_CLIENT: | |
760 | idx = cli_capindex; | |
761 | break; | |
762 | case MAPI_CAP_SERVER: | |
763 | idx = serv_capindex; | |
764 | break; | |
765 | default: | |
766 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
767 | "Unknown/unsupported CAP index found of type %d on capability %s when unloading %s", | |
768 | m->cap_index, m->cap_name, modlist[modindex]->name); | |
769 | ilog(L_MAIN, | |
770 | "Unknown/unsupported CAP index found of type %d on capability %s when unloading %s", | |
771 | m->cap_index, m->cap_name, modlist[modindex]->name); | |
772 | continue; | |
773 | } | |
774 | ||
775 | capability_orphan(idx, m->cap_name); | |
776 | } | |
777 | } | |
778 | } | |
779 | default: | |
780 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
781 | "Unknown/unsupported MAPI version %d when unloading %s!", | |
782 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
783 | ilog(L_MAIN, "Unknown/unsupported MAPI version %d when unloading %s!", | |
784 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
785 | break; | |
786 | } | |
787 | ||
788 | lt_dlclose(modlist[modindex]->address); | |
789 | ||
790 | rb_free(modlist[modindex]->name); | |
791 | rb_free(modlist[modindex]); | |
792 | memmove(&modlist[modindex], &modlist[modindex + 1], | |
793 | sizeof(struct module *) * ((num_mods - 1) - modindex)); | |
794 | ||
795 | if(num_mods != 0) | |
796 | num_mods--; | |
797 | ||
798 | if(warn == 1) | |
799 | { | |
800 | ilog(L_MAIN, "Module %s unloaded", name); | |
801 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Module %s unloaded", name); | |
802 | } | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | /* | |
808 | * load_a_module() | |
809 | * | |
810 | * inputs - path name of module, int to notice, int of origin, int of core | |
811 | * output - -1 if error 0 if success | |
812 | * side effects - loads a module if successful | |
813 | */ | |
814 | int | |
815 | load_a_module(const char *path, int warn, int origin, int core) | |
816 | { | |
817 | lt_dlhandle tmpptr; | |
818 | char *mod_basename; | |
819 | const char *ver, *description = NULL; | |
820 | ||
821 | int *mapi_version; | |
822 | ||
823 | mod_basename = rb_basename(path); | |
824 | ||
825 | tmpptr = lt_dlopenext(path); | |
826 | ||
827 | if(tmpptr == NULL) | |
828 | { | |
829 | const char *err = lt_dlerror(); | |
830 | ||
831 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
832 | "Error loading module %s: %s", mod_basename, err); | |
833 | ilog(L_MAIN, "Error loading module %s: %s", mod_basename, err); | |
834 | rb_free(mod_basename); | |
835 | return -1; | |
836 | } | |
837 | ||
838 | /* | |
839 | * _mheader is actually a struct mapi_mheader_*, but mapi_version | |
840 | * is always the first member of this structure, so we treate it | |
841 | * as a single int in order to determine the API version. | |
842 | * -larne. | |
843 | */ | |
844 | mapi_version = (int *) (uintptr_t) lt_dlsym(tmpptr, "_mheader"); | |
845 | if((mapi_version == NULL | |
846 | && (mapi_version = (int *) (uintptr_t) lt_dlsym(tmpptr, "__mheader")) == NULL) | |
847 | || MAPI_MAGIC(*mapi_version) != MAPI_MAGIC_HDR) | |
848 | { | |
849 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
850 | "Data format error: module %s has no MAPI header.", | |
851 | mod_basename); | |
852 | ilog(L_MAIN, "Data format error: module %s has no MAPI header.", mod_basename); | |
853 | (void) lt_dlclose(tmpptr); | |
854 | rb_free(mod_basename); | |
855 | return -1; | |
856 | } | |
857 | ||
858 | switch (MAPI_VERSION(*mapi_version)) | |
859 | { | |
860 | case 1: | |
861 | { | |
862 | struct mapi_mheader_av1 *mheader = (struct mapi_mheader_av1 *)(void *)mapi_version; /* see above */ | |
863 | if(mheader->mapi_register && (mheader->mapi_register() == -1)) | |
864 | { | |
865 | ilog(L_MAIN, "Module %s indicated failure during load.", | |
866 | mod_basename); | |
867 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
868 | "Module %s indicated failure during load.", | |
869 | mod_basename); | |
870 | lt_dlclose(tmpptr); | |
871 | rb_free(mod_basename); | |
872 | return -1; | |
873 | } | |
874 | if(mheader->mapi_command_list) | |
875 | { | |
876 | struct Message **m; | |
877 | for (m = mheader->mapi_command_list; *m; ++m) | |
878 | mod_add_cmd(*m); | |
879 | } | |
880 | ||
881 | if(mheader->mapi_hook_list) | |
882 | { | |
883 | mapi_hlist_av1 *m; | |
884 | for (m = mheader->mapi_hook_list; m->hapi_name; ++m) | |
885 | *m->hapi_id = register_hook(m->hapi_name); | |
886 | } | |
887 | ||
888 | if(mheader->mapi_hfn_list) | |
889 | { | |
890 | mapi_hfn_list_av1 *m; | |
891 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
892 | add_hook(m->hapi_name, m->fn); | |
893 | } | |
894 | ||
895 | ver = mheader->mapi_module_version; | |
896 | break; | |
897 | } | |
898 | case 2: | |
899 | { | |
900 | struct mapi_mheader_av2 *mheader = (struct mapi_mheader_av2 *)(void *)mapi_version; /* see above */ | |
901 | ||
902 | /* XXX duplicated code :( */ | |
903 | if(mheader->mapi_register && (mheader->mapi_register() == -1)) | |
904 | { | |
905 | ilog(L_MAIN, "Module %s indicated failure during load.", | |
906 | mod_basename); | |
907 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
908 | "Module %s indicated failure during load.", | |
909 | mod_basename); | |
910 | lt_dlclose(tmpptr); | |
911 | rb_free(mod_basename); | |
912 | return -1; | |
913 | } | |
914 | ||
915 | /* Basic date code checks | |
916 | * | |
917 | * Don't make them fatal, but do complain about differences within a certain time frame. | |
918 | * Later on if there are major API changes we can add fatal checks. | |
919 | * -- Elizafox | |
920 | */ | |
921 | if(mheader->mapi_datecode != datecode && mheader->mapi_datecode > 0) | |
922 | { | |
923 | long int delta = datecode - mheader->mapi_datecode; | |
924 | if (delta > MOD_WARN_DELTA) | |
925 | { | |
926 | delta /= 86400; | |
927 | iwarn("Module %s build date is out of sync with ircd build date by %ld days, expect problems", | |
928 | mod_basename, delta); | |
929 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
930 | "Module %s build date is out of sync with ircd build date by %ld days, expect problems", | |
931 | mod_basename, delta); | |
932 | } | |
933 | } | |
934 | ||
935 | if(mheader->mapi_command_list) | |
936 | { | |
937 | struct Message **m; | |
938 | for (m = mheader->mapi_command_list; *m; ++m) | |
939 | mod_add_cmd(*m); | |
940 | } | |
941 | ||
942 | if(mheader->mapi_hook_list) | |
943 | { | |
944 | mapi_hlist_av1 *m; | |
945 | for (m = mheader->mapi_hook_list; m->hapi_name; ++m) | |
946 | *m->hapi_id = register_hook(m->hapi_name); | |
947 | } | |
948 | ||
949 | if(mheader->mapi_hfn_list) | |
950 | { | |
951 | mapi_hfn_list_av1 *m; | |
952 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
953 | add_hook(m->hapi_name, m->fn); | |
954 | } | |
955 | ||
956 | /* New in MAPI v2 - version replacement */ | |
957 | ver = mheader->mapi_module_version ? mheader->mapi_module_version : ircd_version; | |
958 | description = mheader->mapi_module_description; | |
959 | ||
960 | if(mheader->mapi_cap_list) | |
961 | { | |
962 | mapi_cap_list_av2 *m; | |
963 | for (m = mheader->mapi_cap_list; m->cap_name; ++m) | |
964 | { | |
965 | struct CapabilityIndex *idx; | |
966 | int result; | |
967 | ||
968 | switch (m->cap_index) | |
969 | { | |
970 | case MAPI_CAP_CLIENT: | |
971 | idx = cli_capindex; | |
972 | break; | |
973 | case MAPI_CAP_SERVER: | |
974 | idx = serv_capindex; | |
975 | break; | |
976 | default: | |
977 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
978 | "Unknown/unsupported CAP index found of type %d on capability %s when loading %s", | |
979 | m->cap_index, m->cap_name, mod_basename); | |
980 | ilog(L_MAIN, | |
981 | "Unknown/unsupported CAP index found of type %d on capability %s when loading %s", | |
982 | m->cap_index, m->cap_name, mod_basename); | |
983 | continue; | |
984 | } | |
985 | ||
986 | result = capability_put(idx, m->cap_name, m->cap_ownerdata); | |
987 | if (m->cap_id != NULL) | |
988 | *(m->cap_id) = result; | |
989 | } | |
990 | } | |
991 | } | |
992 | ||
993 | break; | |
994 | default: | |
995 | ilog(L_MAIN, "Module %s has unknown/unsupported MAPI version %d.", | |
996 | mod_basename, MAPI_VERSION(*mapi_version)); | |
997 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
998 | "Module %s has unknown/unsupported MAPI version %d.", | |
999 | mod_basename, *mapi_version); | |
1000 | lt_dlclose(tmpptr); | |
1001 | rb_free(mod_basename); | |
1002 | return -1; | |
1003 | } | |
1004 | ||
1005 | if(ver == NULL) | |
1006 | ver = unknown_ver; | |
1007 | ||
1008 | if(description == NULL) | |
1009 | description = unknown_description; | |
1010 | ||
1011 | increase_modlist(); | |
1012 | ||
1013 | modlist[num_mods] = rb_malloc(sizeof(struct module)); | |
1014 | modlist[num_mods]->address = tmpptr; | |
1015 | modlist[num_mods]->version = ver; | |
1016 | modlist[num_mods]->description = description; | |
1017 | modlist[num_mods]->core = core; | |
1018 | modlist[num_mods]->name = rb_strdup(mod_basename); | |
1019 | modlist[num_mods]->mapi_header = mapi_version; | |
1020 | modlist[num_mods]->mapi_version = MAPI_VERSION(*mapi_version); | |
1021 | modlist[num_mods]->origin = origin; | |
1022 | num_mods++; | |
1023 | ||
1024 | if(warn == 1) | |
1025 | { | |
1026 | const char *o; | |
1027 | ||
1028 | switch (origin) | |
1029 | { | |
1030 | case MAPI_ORIGIN_EXTENSION: | |
1031 | o = "extension"; | |
1032 | break; | |
1033 | case MAPI_ORIGIN_CORE: | |
1034 | o = "core"; | |
1035 | break; | |
1036 | default: | |
1037 | o = "unknown"; | |
1038 | break; | |
1039 | } | |
1040 | ||
1041 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1042 | "Module %s [version: %s; MAPI version: %d; origin: %s; description: \"%s\"] loaded at %p", | |
1043 | mod_basename, ver, MAPI_VERSION(*mapi_version), o, description, | |
1044 | (void *) tmpptr); | |
1045 | ilog(L_MAIN, "Module %s [version: %s; MAPI version: %d; origin: %s; description: \"%s\"] loaded at %p", | |
1046 | mod_basename, ver, MAPI_VERSION(*mapi_version), o, description, (void *) tmpptr); | |
1047 | } | |
1048 | rb_free(mod_basename); | |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * increase_modlist | |
1054 | * | |
1055 | * inputs - NONE | |
1056 | * output - NONE | |
1057 | * side effects - expand the size of modlist if necessary | |
1058 | */ | |
1059 | static void | |
1060 | increase_modlist(void) | |
1061 | { | |
1062 | struct module **new_modlist = NULL; | |
1063 | ||
1064 | if((num_mods + 1) < max_mods) | |
1065 | return; | |
1066 | ||
1067 | new_modlist = (struct module **) rb_malloc(sizeof(struct module *) * | |
1068 | (max_mods + MODS_INCREMENT)); | |
1069 | memcpy((void *) new_modlist, (void *) modlist, sizeof(struct module *) * num_mods); | |
1070 | ||
1071 | rb_free(modlist); | |
1072 | modlist = new_modlist; | |
1073 | max_mods += MODS_INCREMENT; | |
1074 | } |