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212380e3 | 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 | * | |
5366977b | 24 | * $Id: modules.c 3161 2007-01-25 07:23:01Z nenolod $ |
212380e3 | 25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | ||
30 | #include "modules.h" | |
d3455e2c | 31 | #include "logger.h" |
212380e3 | 32 | #include "ircd.h" |
33 | #include "client.h" | |
34 | #include "send.h" | |
35 | #include "s_conf.h" | |
36 | #include "s_newconf.h" | |
37 | #include "numeric.h" | |
38 | #include "parse.h" | |
39 | #include "ircd_defs.h" | |
13ae2f4b | 40 | #include "match.h" |
e31b740d | 41 | #include "s_serv.h" |
212380e3 | 42 | |
43 | ||
44 | ||
45 | /* -TimeMr14C: | |
46 | * I have moved the dl* function definitions and | |
47 | * the two functions (load_a_module / unload_a_module) to the | |
48 | * file dynlink.c | |
49 | * And also made the necessary changes to those functions | |
50 | * to comply with shl_load and friends. | |
51 | * In this file, to keep consistency with the makefile, | |
52 | * I added the ability to load *.sl files, too. | |
53 | * 27/02/2002 | |
54 | */ | |
55 | ||
56 | #ifndef STATIC_MODULES | |
57 | ||
58 | struct module **modlist = NULL; | |
59 | ||
60 | static const char *core_module_table[] = { | |
65b8e002 | 61 | "m_ban", |
212380e3 | 62 | "m_die", |
63 | "m_error", | |
64 | "m_join", | |
65 | "m_kick", | |
66 | "m_kill", | |
67 | "m_message", | |
fb87421d | 68 | "m_metadata", |
212380e3 | 69 | "m_mode", |
70 | "m_nick", | |
71 | "m_part", | |
72 | "m_quit", | |
73 | "m_server", | |
212380e3 | 74 | "m_squit", |
75 | NULL | |
76 | }; | |
77 | ||
78 | #define MODS_INCREMENT 10 | |
79 | int num_mods = 0; | |
80 | int max_mods = MODS_INCREMENT; | |
81 | ||
af81d5a0 | 82 | static rb_dlink_list mod_paths; |
212380e3 | 83 | |
84 | static int mo_modload(struct Client *, struct Client *, int, const char **); | |
85 | static int mo_modlist(struct Client *, struct Client *, int, const char **); | |
86 | static int mo_modreload(struct Client *, struct Client *, int, const char **); | |
87 | static int mo_modunload(struct Client *, struct Client *, int, const char **); | |
88 | static int mo_modrestart(struct Client *, struct Client *, int, const char **); | |
89 | ||
e31b740d JH |
90 | static int me_modload(struct Client *, struct Client *, int, const char **); |
91 | static int me_modlist(struct Client *, struct Client *, int, const char **); | |
92 | static int me_modreload(struct Client *, struct Client *, int, const char **); | |
93 | static int me_modunload(struct Client *, struct Client *, int, const char **); | |
94 | static int me_modrestart(struct Client *, struct Client *, int, const char **); | |
95 | ||
96 | static int do_modload(struct Client *, const char *); | |
97 | static int do_modunload(struct Client *, const char *); | |
98 | static int do_modreload(struct Client *, const char *); | |
99 | static int do_modlist(struct Client *, const char *); | |
100 | static int do_modrestart(struct Client *); | |
101 | ||
212380e3 | 102 | struct Message modload_msgtab = { |
103 | "MODLOAD", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 104 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modload, 2}, {mo_modload, 2}} |
212380e3 | 105 | }; |
106 | ||
107 | struct Message modunload_msgtab = { | |
108 | "MODUNLOAD", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 109 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modunload, 2}, {mo_modunload, 2}} |
212380e3 | 110 | }; |
111 | ||
112 | struct Message modreload_msgtab = { | |
113 | "MODRELOAD", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 114 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modreload, 2}, {mo_modreload, 2}} |
212380e3 | 115 | }; |
116 | ||
117 | struct Message modlist_msgtab = { | |
118 | "MODLIST", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 119 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modlist, 0}, {mo_modlist, 0}} |
212380e3 | 120 | }; |
121 | ||
122 | struct Message modrestart_msgtab = { | |
123 | "MODRESTART", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 124 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modrestart, 0}, {mo_modrestart, 0}} |
212380e3 | 125 | }; |
126 | ||
212380e3 | 127 | void |
128 | modules_init(void) | |
129 | { | |
130 | mod_add_cmd(&modload_msgtab); | |
131 | mod_add_cmd(&modunload_msgtab); | |
132 | mod_add_cmd(&modreload_msgtab); | |
133 | mod_add_cmd(&modlist_msgtab); | |
134 | mod_add_cmd(&modrestart_msgtab); | |
135 | ||
136 | /* Add the default paths we look in to the module system --nenolod */ | |
137 | mod_add_path(MODPATH); | |
138 | mod_add_path(AUTOMODPATH); | |
139 | } | |
140 | ||
141 | /* mod_find_path() | |
142 | * | |
143 | * input - path | |
144 | * output - none | |
145 | * side effects - returns a module path from path | |
146 | */ | |
147 | static struct module_path * | |
148 | mod_find_path(const char *path) | |
149 | { | |
af81d5a0 | 150 | rb_dlink_node *ptr; |
212380e3 | 151 | struct module_path *mpath; |
152 | ||
8e69bb4e | 153 | RB_DLINK_FOREACH(ptr, mod_paths.head) |
212380e3 | 154 | { |
155 | mpath = ptr->data; | |
156 | ||
157 | if(!strcmp(path, mpath->path)) | |
158 | return mpath; | |
159 | } | |
160 | ||
161 | return NULL; | |
162 | } | |
163 | ||
164 | /* mod_add_path | |
165 | * | |
166 | * input - path | |
167 | * ouput - | |
168 | * side effects - adds path to list | |
169 | */ | |
170 | void | |
171 | mod_add_path(const char *path) | |
172 | { | |
173 | struct module_path *pathst; | |
174 | ||
175 | if(mod_find_path(path)) | |
176 | return; | |
177 | ||
8e43b0b4 | 178 | pathst = rb_malloc(sizeof(struct module_path)); |
212380e3 | 179 | |
180 | strcpy(pathst->path, path); | |
af81d5a0 | 181 | rb_dlinkAddAlloc(pathst, &mod_paths); |
212380e3 | 182 | } |
183 | ||
184 | /* mod_clear_paths() | |
185 | * | |
186 | * input - | |
187 | * output - | |
188 | * side effects - clear the lists of paths | |
189 | */ | |
190 | void | |
191 | mod_clear_paths(void) | |
192 | { | |
90a3c35b | 193 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 194 | |
90a3c35b | 195 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, mod_paths.head) |
212380e3 | 196 | { |
90a3c35b | 197 | rb_free(ptr->data); |
3c8a7c39 | 198 | rb_free_rb_dlink_node(ptr); |
212380e3 | 199 | } |
200 | ||
201 | mod_paths.head = mod_paths.tail = NULL; | |
202 | mod_paths.length = 0; | |
203 | } | |
204 | ||
212380e3 | 205 | /* findmodule_byname |
206 | * | |
207 | * input - | |
208 | * output - | |
209 | * side effects - | |
210 | */ | |
211 | ||
212 | int | |
213 | findmodule_byname(const char *name) | |
214 | { | |
215 | int i; | |
216 | ||
217 | for (i = 0; i < num_mods; i++) | |
218 | { | |
219 | if(!irccmp(modlist[i]->name, name)) | |
220 | return i; | |
221 | } | |
222 | return -1; | |
223 | } | |
224 | ||
225 | /* load_all_modules() | |
226 | * | |
227 | * input - | |
228 | * output - | |
229 | * side effects - | |
230 | */ | |
231 | void | |
232 | load_all_modules(int warn) | |
233 | { | |
234 | DIR *system_module_dir = NULL; | |
235 | struct dirent *ldirent = NULL; | |
236 | char module_fq_name[PATH_MAX + 1]; | |
237 | int len; | |
238 | ||
239 | modules_init(); | |
240 | ||
8e43b0b4 | 241 | modlist = (struct module **) rb_malloc(sizeof(struct module) * (MODS_INCREMENT)); |
212380e3 | 242 | |
243 | max_mods = MODS_INCREMENT; | |
244 | ||
245 | system_module_dir = opendir(AUTOMODPATH); | |
246 | ||
247 | if(system_module_dir == NULL) | |
248 | { | |
249 | ilog(L_MAIN, "Could not load modules from %s: %s", AUTOMODPATH, strerror(errno)); | |
250 | return; | |
251 | } | |
252 | ||
253 | while ((ldirent = readdir(system_module_dir)) != NULL) | |
254 | { | |
255 | len = strlen(ldirent->d_name); | |
256 | if((len > 3) && !strcmp(ldirent->d_name+len-3, SHARED_SUFFIX)) | |
257 | { | |
38e6acdd | 258 | (void) rb_snprintf(module_fq_name, sizeof(module_fq_name), "%s/%s", AUTOMODPATH, ldirent->d_name); |
212380e3 | 259 | (void) load_a_module(module_fq_name, warn, 0); |
260 | } | |
261 | ||
262 | } | |
263 | (void) closedir(system_module_dir); | |
264 | } | |
265 | ||
266 | /* load_core_modules() | |
267 | * | |
268 | * input - | |
269 | * output - | |
270 | * side effects - core modules are loaded, if any fail, kill ircd | |
271 | */ | |
272 | void | |
273 | load_core_modules(int warn) | |
274 | { | |
275 | char module_name[MAXPATHLEN]; | |
276 | int i; | |
277 | ||
278 | ||
279 | for (i = 0; core_module_table[i]; i++) | |
280 | { | |
38e6acdd | 281 | rb_snprintf(module_name, sizeof(module_name), "%s/%s%s", MODPATH, |
212380e3 | 282 | core_module_table[i], SHARED_SUFFIX); |
283 | ||
284 | if(load_a_module(module_name, warn, 1) == -1) | |
285 | { | |
286 | ilog(L_MAIN, | |
287 | "Error loading core module %s%s: terminating ircd", | |
288 | core_module_table[i], SHARED_SUFFIX); | |
289 | exit(0); | |
290 | } | |
291 | } | |
292 | } | |
293 | ||
294 | /* load_one_module() | |
295 | * | |
296 | * input - | |
297 | * output - | |
298 | * side effects - | |
299 | */ | |
300 | int | |
301 | load_one_module(const char *path, int coremodule) | |
302 | { | |
303 | char modpath[MAXPATHLEN]; | |
af81d5a0 | 304 | rb_dlink_node *pathst; |
212380e3 | 305 | struct module_path *mpath; |
306 | ||
307 | struct stat statbuf; | |
308 | ||
309 | if (server_state_foreground == 1) | |
310 | inotice("loading module %s ...", path); | |
311 | ||
8e69bb4e | 312 | RB_DLINK_FOREACH(pathst, mod_paths.head) |
212380e3 | 313 | { |
314 | mpath = pathst->data; | |
315 | ||
38e6acdd | 316 | rb_snprintf(modpath, sizeof(modpath), "%s/%s", mpath->path, path); |
212380e3 | 317 | if((strstr(modpath, "../") == NULL) && (strstr(modpath, "/..") == NULL)) |
318 | { | |
319 | if(stat(modpath, &statbuf) == 0) | |
320 | { | |
321 | if(S_ISREG(statbuf.st_mode)) | |
322 | { | |
323 | /* Regular files only please */ | |
324 | if(coremodule) | |
325 | return load_a_module(modpath, 1, 1); | |
326 | else | |
327 | return load_a_module(modpath, 1, 0); | |
328 | } | |
329 | } | |
330 | ||
331 | } | |
332 | } | |
333 | ||
3232087a | 334 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Cannot locate module %s", path); |
212380e3 | 335 | return -1; |
336 | } | |
337 | ||
338 | ||
339 | /* load a module .. */ | |
340 | static int | |
341 | mo_modload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
342 | { | |
212380e3 | 343 | if(!IsOperAdmin(source_p)) |
344 | { | |
345 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
346 | me.name, source_p->name, "admin"); | |
347 | return 0; | |
348 | } | |
349 | ||
e31b740d JH |
350 | if(parc > 2) |
351 | { | |
352 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
353 | "ENCAP %s MODLOAD %s", parv[2], parv[1]); | |
354 | if (match(parv[2], me.name) == 0) | |
355 | return 0; | |
356 | } | |
357 | ||
358 | return do_modload(source_p, parv[1]); | |
359 | } | |
360 | ||
361 | static int | |
362 | me_modload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
363 | { | |
364 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
365 | { | |
366 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
367 | "to load modules on this server."); | |
368 | return 0; | |
369 | } | |
370 | ||
371 | return do_modload(source_p, parv[1]); | |
372 | } | |
373 | ||
374 | static int | |
375 | do_modload(struct Client *source_p, const char *module) | |
376 | { | |
377 | char *m_bn = rb_basename(module); | |
212380e3 | 378 | |
379 | if(findmodule_byname(m_bn) != -1) | |
380 | { | |
5366977b | 381 | sendto_one_notice(source_p, ":Module %s is already loaded", m_bn); |
90a3c35b | 382 | rb_free(m_bn); |
212380e3 | 383 | return 0; |
384 | } | |
385 | ||
e31b740d | 386 | load_one_module(module, 0); |
212380e3 | 387 | |
90a3c35b | 388 | rb_free(m_bn); |
212380e3 | 389 | |
390 | return 0; | |
391 | } | |
392 | ||
393 | ||
394 | /* unload a module .. */ | |
395 | static int | |
396 | mo_modunload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
397 | { | |
212380e3 | 398 | if(!IsOperAdmin(source_p)) |
399 | { | |
400 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
401 | me.name, source_p->name, "admin"); | |
402 | return 0; | |
403 | } | |
404 | ||
e31b740d JH |
405 | if(parc > 2) |
406 | { | |
407 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
408 | "ENCAP %s MODUNLOAD %s", parv[2], parv[1]); | |
409 | if (match(parv[2], me.name) == 0) | |
410 | return 0; | |
411 | } | |
412 | ||
413 | return do_modunload(source_p, parv[1]); | |
414 | } | |
415 | ||
416 | static int | |
417 | me_modunload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
418 | { | |
419 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
420 | { | |
421 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
422 | "to load modules on this server."); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | return do_modunload(source_p, parv[1]); | |
427 | } | |
428 | ||
429 | static int | |
430 | do_modunload(struct Client *source_p, const char *module) | |
431 | { | |
432 | int modindex; | |
433 | char *m_bn = rb_basename(module); | |
212380e3 | 434 | |
435 | if((modindex = findmodule_byname(m_bn)) == -1) | |
436 | { | |
5366977b | 437 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
90a3c35b | 438 | rb_free(m_bn); |
212380e3 | 439 | return 0; |
440 | } | |
441 | ||
442 | if(modlist[modindex]->core == 1) | |
443 | { | |
5366977b | 444 | sendto_one_notice(source_p, ":Module %s is a core module and may not be unloaded", m_bn); |
90a3c35b | 445 | rb_free(m_bn); |
212380e3 | 446 | return 0; |
447 | } | |
448 | ||
449 | if(unload_one_module(m_bn, 1) == -1) | |
450 | { | |
5366977b | 451 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
212380e3 | 452 | } |
5366977b | 453 | |
90a3c35b | 454 | rb_free(m_bn); |
212380e3 | 455 | return 0; |
456 | } | |
457 | ||
458 | /* unload and load in one! */ | |
459 | static int | |
460 | mo_modreload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
461 | { | |
212380e3 | 462 | if(!IsOperAdmin(source_p)) |
463 | { | |
464 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
465 | me.name, source_p->name, "admin"); | |
466 | return 0; | |
467 | } | |
468 | ||
e31b740d JH |
469 | if(parc > 2) |
470 | { | |
471 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
472 | "ENCAP %s MODRELOAD %s", parv[2], parv[1]); | |
473 | if (match(parv[2], me.name) == 0) | |
474 | return 0; | |
475 | } | |
476 | ||
477 | return do_modreload(source_p, parv[1]); | |
478 | } | |
479 | ||
480 | static int | |
481 | me_modreload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
482 | { | |
483 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
484 | { | |
485 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
486 | "to load modules on this server."); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | return do_modreload(source_p, parv[1]); | |
491 | } | |
492 | ||
493 | static int | |
494 | do_modreload(struct Client *source_p, const char *module) | |
495 | { | |
496 | int modindex; | |
497 | int check_core; | |
498 | char *m_bn = rb_basename(module); | |
212380e3 | 499 | |
500 | if((modindex = findmodule_byname(m_bn)) == -1) | |
501 | { | |
5366977b | 502 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
90a3c35b | 503 | rb_free(m_bn); |
212380e3 | 504 | return 0; |
505 | } | |
506 | ||
507 | check_core = modlist[modindex]->core; | |
508 | ||
509 | if(unload_one_module(m_bn, 1) == -1) | |
510 | { | |
5366977b | 511 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
90a3c35b | 512 | rb_free(m_bn); |
212380e3 | 513 | return 0; |
514 | } | |
515 | ||
4b253d3b | 516 | if((load_one_module(m_bn, check_core) == -1) && check_core) |
212380e3 | 517 | { |
3232087a | 518 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
4b253d3b WP |
519 | "Error reloading core module: %s: terminating ircd", m_bn); |
520 | ilog(L_MAIN, "Error loading core module %s: terminating ircd", m_bn); | |
212380e3 | 521 | exit(0); |
522 | } | |
523 | ||
90a3c35b | 524 | rb_free(m_bn); |
212380e3 | 525 | return 0; |
526 | } | |
527 | ||
528 | /* list modules .. */ | |
529 | static int | |
530 | mo_modlist(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
531 | { | |
212380e3 | 532 | if(!IsOperAdmin(source_p)) |
533 | { | |
534 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
535 | me.name, source_p->name, "admin"); | |
536 | return 0; | |
537 | } | |
538 | ||
e31b740d JH |
539 | if(parc > 2) |
540 | { | |
541 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
542 | "ENCAP %s MODLIST %s", parv[2], parv[1]); | |
543 | if (match(parv[2], me.name) == 0) | |
544 | return 0; | |
545 | } | |
546 | ||
547 | return do_modlist(source_p, parc > 1 ? parv[1] : 0); | |
548 | } | |
549 | ||
550 | static int | |
551 | me_modlist(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
552 | { | |
553 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
554 | { | |
555 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
556 | "to load modules on this server."); | |
557 | return 0; | |
558 | } | |
559 | ||
560 | return do_modlist(source_p, parv[1]); | |
561 | } | |
562 | ||
563 | static int | |
564 | do_modlist(struct Client *source_p, const char *pattern) | |
565 | { | |
566 | int i; | |
567 | ||
212380e3 | 568 | for (i = 0; i < num_mods; i++) |
569 | { | |
e31b740d | 570 | if(pattern) |
212380e3 | 571 | { |
e31b740d | 572 | if(match(pattern, modlist[i]->name)) |
212380e3 | 573 | { |
574 | sendto_one(source_p, form_str(RPL_MODLIST), | |
575 | me.name, source_p->name, | |
576 | modlist[i]->name, | |
577 | modlist[i]->address, | |
578 | modlist[i]->version, modlist[i]->core ? "(core)" : ""); | |
579 | } | |
580 | } | |
581 | else | |
582 | { | |
583 | sendto_one(source_p, form_str(RPL_MODLIST), | |
584 | me.name, source_p->name, modlist[i]->name, | |
585 | modlist[i]->address, modlist[i]->version, | |
586 | modlist[i]->core ? "(core)" : ""); | |
587 | } | |
588 | } | |
589 | ||
590 | sendto_one(source_p, form_str(RPL_ENDOFMODLIST), me.name, source_p->name); | |
591 | return 0; | |
592 | } | |
593 | ||
594 | /* unload and reload all modules */ | |
595 | static int | |
596 | mo_modrestart(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
597 | { | |
212380e3 | 598 | if(!IsOperAdmin(source_p)) |
599 | { | |
600 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
601 | me.name, source_p->name, "admin"); | |
602 | return 0; | |
603 | } | |
604 | ||
e31b740d JH |
605 | if(parc > 1) |
606 | { | |
607 | sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS, | |
608 | "ENCAP %s MODRESTART", parv[1]); | |
609 | if (match(parv[1], me.name) == 0) | |
610 | return 0; | |
611 | } | |
612 | ||
613 | return do_modrestart(source_p); | |
614 | } | |
615 | ||
616 | static int | |
617 | me_modrestart(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
618 | { | |
619 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
620 | { | |
621 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
622 | "to load modules on this server."); | |
623 | return 0; | |
624 | } | |
625 | ||
626 | return do_modrestart(source_p); | |
627 | } | |
628 | ||
629 | static int | |
630 | do_modrestart(struct Client *source_p) | |
631 | { | |
632 | int modnum; | |
633 | ||
5366977b | 634 | sendto_one_notice(source_p, ":Reloading all modules"); |
212380e3 | 635 | |
636 | modnum = num_mods; | |
637 | while (num_mods) | |
638 | unload_one_module(modlist[0]->name, 0); | |
639 | ||
640 | load_all_modules(0); | |
641 | load_core_modules(0); | |
642 | rehash(0); | |
643 | ||
3232087a | 644 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 645 | "Module Restart: %d modules unloaded, %d modules loaded", |
646 | modnum, num_mods); | |
647 | ilog(L_MAIN, "Module Restart: %d modules unloaded, %d modules loaded", modnum, num_mods); | |
648 | return 0; | |
649 | } | |
650 | ||
651 | ||
652 | ||
653 | #ifndef RTLD_NOW | |
654 | #define RTLD_NOW RTLD_LAZY /* openbsd deficiency */ | |
655 | #endif | |
656 | ||
1386c9a7 JT |
657 | #ifndef RTLD_LOCAL |
658 | #define RTLD_LOCAL 0 | |
659 | #endif | |
660 | ||
212380e3 | 661 | #ifdef CHARYBDIS_PROFILE |
662 | # ifndef RTLD_PROFILE | |
663 | # warning libdl may not support profiling, sucks. :( | |
664 | # define RTLD_PROFILE 0 | |
665 | # endif | |
666 | #endif | |
667 | ||
668 | static void increase_modlist(void); | |
669 | ||
670 | #define MODS_INCREMENT 10 | |
671 | ||
672 | static char unknown_ver[] = "<unknown>"; | |
673 | ||
674 | /* This file contains the core functions to use dynamic libraries. | |
675 | * -TimeMr14C | |
676 | */ | |
677 | ||
678 | ||
679 | #ifdef HAVE_MACH_O_DYLD_H | |
680 | /* | |
681 | ** jmallett's dl*(3) shims for NSModule(3) systems. | |
682 | */ | |
683 | #include <mach-o/dyld.h> | |
684 | ||
685 | #ifndef HAVE_DLOPEN | |
686 | #ifndef RTLD_LAZY | |
687 | #define RTLD_LAZY 2185 /* built-in dl*(3) don't care */ | |
688 | #endif | |
689 | ||
690 | void undefinedErrorHandler(const char *); | |
691 | NSModule multipleErrorHandler(NSSymbol, NSModule, NSModule); | |
692 | void linkEditErrorHandler(NSLinkEditErrors, int, const char *, const char *); | |
693 | char *dlerror(void); | |
694 | void *dlopen(char *, int); | |
695 | int dlclose(void *); | |
696 | void *dlsym(void *, char *); | |
697 | ||
698 | static int firstLoad = TRUE; | |
699 | static int myDlError; | |
700 | static char *myErrorTable[] = { "Loading file as object failed\n", | |
701 | "Loading file as object succeeded\n", | |
702 | "Not a valid shared object\n", | |
703 | "Architecture of object invalid on this architecture\n", | |
704 | "Invalid or corrupt image\n", | |
705 | "Could not access object\n", | |
706 | "NSCreateObjectFileImageFromFile failed\n", | |
707 | NULL | |
708 | }; | |
709 | ||
710 | void | |
711 | undefinedErrorHandler(const char *symbolName) | |
712 | { | |
3232087a | 713 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Undefined symbol: %s", symbolName); |
212380e3 | 714 | ilog(L_MAIN, "Undefined symbol: %s", symbolName); |
715 | return; | |
716 | } | |
717 | ||
718 | NSModule | |
719 | multipleErrorHandler(NSSymbol s, NSModule old, NSModule new) | |
720 | { | |
721 | /* XXX | |
722 | ** This results in substantial leaking of memory... Should free one | |
723 | ** module, maybe? | |
724 | */ | |
3232087a | 725 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 726 | "Symbol `%s' found in `%s' and `%s'", |
727 | NSNameOfSymbol(s), NSNameOfModule(old), NSNameOfModule(new)); | |
728 | ilog(L_MAIN, "Symbol `%s' found in `%s' and `%s'", | |
729 | NSNameOfSymbol(s), NSNameOfModule(old), NSNameOfModule(new)); | |
730 | /* We return which module should be considered valid, I believe */ | |
731 | return new; | |
732 | } | |
733 | ||
734 | void | |
735 | linkEditErrorHandler(NSLinkEditErrors errorClass, int errnum, | |
736 | const char *fileName, const char *errorString) | |
737 | { | |
3232087a | 738 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 739 | "Link editor error: %s for %s", errorString, fileName); |
740 | ilog(L_MAIN, "Link editor error: %s for %s", errorString, fileName); | |
741 | return; | |
742 | } | |
743 | ||
744 | char * | |
745 | dlerror(void) | |
746 | { | |
747 | return myDlError == NSObjectFileImageSuccess ? NULL : myErrorTable[myDlError % 7]; | |
748 | } | |
749 | ||
750 | void * | |
751 | dlopen(char *filename, int unused) | |
752 | { | |
753 | NSObjectFileImage myImage; | |
754 | NSModule myModule; | |
755 | ||
756 | if(firstLoad) | |
757 | { | |
758 | /* | |
759 | ** If we are loading our first symbol (huzzah!) we should go ahead | |
760 | ** and install link editor error handling! | |
761 | */ | |
762 | NSLinkEditErrorHandlers linkEditorErrorHandlers; | |
763 | ||
764 | linkEditorErrorHandlers.undefined = undefinedErrorHandler; | |
765 | linkEditorErrorHandlers.multiple = multipleErrorHandler; | |
766 | linkEditorErrorHandlers.linkEdit = linkEditErrorHandler; | |
767 | NSInstallLinkEditErrorHandlers(&linkEditorErrorHandlers); | |
768 | firstLoad = FALSE; | |
769 | } | |
770 | myDlError = NSCreateObjectFileImageFromFile(filename, &myImage); | |
771 | if(myDlError != NSObjectFileImageSuccess) | |
772 | { | |
773 | return NULL; | |
774 | } | |
775 | myModule = NSLinkModule(myImage, filename, NSLINKMODULE_OPTION_PRIVATE); | |
776 | return (void *) myModule; | |
777 | } | |
778 | ||
779 | int | |
780 | dlclose(void *myModule) | |
781 | { | |
782 | NSUnLinkModule(myModule, FALSE); | |
783 | return 0; | |
784 | } | |
785 | ||
786 | void * | |
787 | dlsym(void *myModule, char *mySymbolName) | |
788 | { | |
789 | NSSymbol mySymbol; | |
790 | ||
791 | mySymbol = NSLookupSymbolInModule((NSModule) myModule, mySymbolName); | |
792 | return NSAddressOfSymbol(mySymbol); | |
793 | } | |
794 | #endif | |
795 | #endif | |
796 | ||
797 | ||
798 | /* | |
799 | * HPUX dl compat functions | |
800 | */ | |
801 | #if defined(HAVE_SHL_LOAD) && !defined(HAVE_DLOPEN) | |
802 | #define RTLD_LAZY BIND_DEFERRED | |
803 | #define RTLD_GLOBAL DYNAMIC_PATH | |
804 | #define dlopen(file,mode) (void *)shl_load((file), (mode), (long) 0) | |
805 | #define dlclose(handle) shl_unload((shl_t)(handle)) | |
806 | #define dlsym(handle,name) hpux_dlsym(handle,name) | |
807 | #define dlerror() strerror(errno) | |
808 | ||
809 | static void * | |
810 | hpux_dlsym(void *handle, char *name) | |
811 | { | |
812 | void *sym_addr; | |
813 | if(!shl_findsym((shl_t *) & handle, name, TYPE_UNDEFINED, &sym_addr)) | |
814 | return sym_addr; | |
815 | return NULL; | |
816 | } | |
817 | ||
818 | #endif | |
819 | ||
820 | /* unload_one_module() | |
821 | * | |
822 | * inputs - name of module to unload | |
823 | * - 1 to say modules unloaded, 0 to not | |
824 | * output - 0 if successful, -1 if error | |
825 | * side effects - module is unloaded | |
826 | */ | |
827 | int | |
828 | unload_one_module(const char *name, int warn) | |
829 | { | |
830 | int modindex; | |
831 | ||
832 | if((modindex = findmodule_byname(name)) == -1) | |
833 | return -1; | |
834 | ||
835 | /* | |
836 | ** XXX - The type system in C does not allow direct conversion between | |
837 | ** data and function pointers, but as it happens, most C compilers will | |
838 | ** safely do this, however it is a theoretical overlow to cast as we | |
839 | ** must do here. I have library functions to take care of this, but | |
840 | ** despite being more "correct" for the C language, this is more | |
841 | ** practical. Removing the abuse of the ability to cast ANY pointer | |
842 | ** to and from an integer value here will break some compilers. | |
843 | ** -jmallett | |
844 | */ | |
845 | /* Left the comment in but the code isn't here any more -larne */ | |
846 | switch (modlist[modindex]->mapi_version) | |
847 | { | |
848 | case 1: | |
849 | { | |
850 | struct mapi_mheader_av1 *mheader = modlist[modindex]->mapi_header; | |
851 | if(mheader->mapi_command_list) | |
852 | { | |
853 | struct Message **m; | |
854 | for (m = mheader->mapi_command_list; *m; ++m) | |
855 | mod_del_cmd(*m); | |
856 | } | |
857 | ||
858 | /* hook events are never removed, we simply lose the | |
859 | * ability to call them --fl | |
860 | */ | |
861 | if(mheader->mapi_hfn_list) | |
862 | { | |
863 | mapi_hfn_list_av1 *m; | |
864 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
865 | remove_hook(m->hapi_name, m->fn); | |
866 | } | |
867 | ||
868 | if(mheader->mapi_unregister) | |
869 | mheader->mapi_unregister(); | |
870 | break; | |
871 | } | |
872 | default: | |
3232087a | 873 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 874 | "Unknown/unsupported MAPI version %d when unloading %s!", |
875 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
876 | ilog(L_MAIN, "Unknown/unsupported MAPI version %d when unloading %s!", | |
877 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
878 | break; | |
879 | } | |
880 | ||
881 | dlclose(modlist[modindex]->address); | |
882 | ||
90a3c35b | 883 | rb_free(modlist[modindex]->name); |
212380e3 | 884 | memcpy(&modlist[modindex], &modlist[modindex + 1], |
885 | sizeof(struct module) * ((num_mods - 1) - modindex)); | |
886 | ||
887 | if(num_mods != 0) | |
888 | num_mods--; | |
889 | ||
890 | if(warn == 1) | |
891 | { | |
892 | ilog(L_MAIN, "Module %s unloaded", name); | |
3232087a | 893 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Module %s unloaded", name); |
212380e3 | 894 | } |
895 | ||
896 | return 0; | |
897 | } | |
898 | ||
899 | ||
900 | /* | |
901 | * load_a_module() | |
902 | * | |
903 | * inputs - path name of module, int to notice, int of core | |
904 | * output - -1 if error 0 if success | |
905 | * side effects - loads a module if successful | |
906 | */ | |
907 | int | |
908 | load_a_module(const char *path, int warn, int core) | |
909 | { | |
910 | void *tmpptr = NULL; | |
911 | ||
912 | char *mod_basename; | |
913 | const char *ver; | |
914 | ||
915 | int *mapi_version; | |
916 | ||
3b0f3294 | 917 | mod_basename = rb_basename(path); |
212380e3 | 918 | |
919 | #ifdef CHARYBDIS_PROFILE | |
1386c9a7 | 920 | tmpptr = dlopen(path, RTLD_NOW | RTLD_LOCAL | RTLD_PROFILE); |
212380e3 | 921 | #else |
1386c9a7 | 922 | tmpptr = dlopen(path, RTLD_NOW | RTLD_LOCAL); |
212380e3 | 923 | #endif |
924 | ||
925 | if(tmpptr == NULL) | |
926 | { | |
927 | const char *err = dlerror(); | |
928 | ||
3232087a | 929 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 930 | "Error loading module %s: %s", mod_basename, err); |
931 | ilog(L_MAIN, "Error loading module %s: %s", mod_basename, err); | |
90a3c35b | 932 | rb_free(mod_basename); |
212380e3 | 933 | return -1; |
934 | } | |
935 | ||
936 | ||
937 | /* | |
938 | * _mheader is actually a struct mapi_mheader_*, but mapi_version | |
939 | * is always the first member of this structure, so we treate it | |
940 | * as a single int in order to determine the API version. | |
941 | * -larne. | |
942 | */ | |
943 | mapi_version = (int *) (uintptr_t) dlsym(tmpptr, "_mheader"); | |
944 | if((mapi_version == NULL | |
945 | && (mapi_version = (int *) (uintptr_t) dlsym(tmpptr, "__mheader")) == NULL) | |
946 | || MAPI_MAGIC(*mapi_version) != MAPI_MAGIC_HDR) | |
947 | { | |
3232087a | 948 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 949 | "Data format error: module %s has no MAPI header.", |
950 | mod_basename); | |
951 | ilog(L_MAIN, "Data format error: module %s has no MAPI header.", mod_basename); | |
952 | (void) dlclose(tmpptr); | |
90a3c35b | 953 | rb_free(mod_basename); |
212380e3 | 954 | return -1; |
955 | } | |
956 | ||
957 | switch (MAPI_VERSION(*mapi_version)) | |
958 | { | |
959 | case 1: | |
960 | { | |
961 | struct mapi_mheader_av1 *mheader = (struct mapi_mheader_av1 *) mapi_version; /* see above */ | |
962 | if(mheader->mapi_register && (mheader->mapi_register() == -1)) | |
963 | { | |
964 | ilog(L_MAIN, "Module %s indicated failure during load.", | |
965 | mod_basename); | |
3232087a | 966 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 967 | "Module %s indicated failure during load.", |
968 | mod_basename); | |
969 | dlclose(tmpptr); | |
90a3c35b | 970 | rb_free(mod_basename); |
212380e3 | 971 | return -1; |
972 | } | |
973 | if(mheader->mapi_command_list) | |
974 | { | |
975 | struct Message **m; | |
976 | for (m = mheader->mapi_command_list; *m; ++m) | |
977 | mod_add_cmd(*m); | |
978 | } | |
979 | ||
980 | if(mheader->mapi_hook_list) | |
981 | { | |
982 | mapi_hlist_av1 *m; | |
983 | for (m = mheader->mapi_hook_list; m->hapi_name; ++m) | |
984 | *m->hapi_id = register_hook(m->hapi_name); | |
985 | } | |
986 | ||
987 | if(mheader->mapi_hfn_list) | |
988 | { | |
989 | mapi_hfn_list_av1 *m; | |
990 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
991 | add_hook(m->hapi_name, m->fn); | |
992 | } | |
993 | ||
994 | ver = mheader->mapi_module_version; | |
995 | break; | |
996 | } | |
997 | ||
998 | default: | |
999 | ilog(L_MAIN, "Module %s has unknown/unsupported MAPI version %d.", | |
1000 | mod_basename, MAPI_VERSION(*mapi_version)); | |
3232087a | 1001 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 1002 | "Module %s has unknown/unsupported MAPI version %d.", |
1003 | mod_basename, *mapi_version); | |
1004 | dlclose(tmpptr); | |
90a3c35b | 1005 | rb_free(mod_basename); |
212380e3 | 1006 | return -1; |
1007 | } | |
1008 | ||
1009 | if(ver == NULL) | |
1010 | ver = unknown_ver; | |
1011 | ||
1012 | increase_modlist(); | |
1013 | ||
8e43b0b4 | 1014 | modlist[num_mods] = rb_malloc(sizeof(struct module)); |
212380e3 | 1015 | modlist[num_mods]->address = tmpptr; |
1016 | modlist[num_mods]->version = ver; | |
1017 | modlist[num_mods]->core = core; | |
62d28946 | 1018 | modlist[num_mods]->name = rb_strdup(mod_basename); |
212380e3 | 1019 | modlist[num_mods]->mapi_header = mapi_version; |
1020 | modlist[num_mods]->mapi_version = MAPI_VERSION(*mapi_version); | |
1021 | num_mods++; | |
1022 | ||
1023 | if(warn == 1) | |
1024 | { | |
3232087a | 1025 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 1026 | "Module %s [version: %s; MAPI version: %d] loaded at 0x%lx", |
1027 | mod_basename, ver, MAPI_VERSION(*mapi_version), | |
1028 | (unsigned long) tmpptr); | |
1029 | ilog(L_MAIN, "Module %s [version: %s; MAPI version: %d] loaded at 0x%lx", | |
1030 | mod_basename, ver, MAPI_VERSION(*mapi_version), (unsigned long) tmpptr); | |
1031 | } | |
90a3c35b | 1032 | rb_free(mod_basename); |
212380e3 | 1033 | return 0; |
1034 | } | |
1035 | ||
1036 | /* | |
1037 | * increase_modlist | |
1038 | * | |
1039 | * inputs - NONE | |
1040 | * output - NONE | |
1041 | * side effects - expand the size of modlist if necessary | |
1042 | */ | |
1043 | static void | |
1044 | increase_modlist(void) | |
1045 | { | |
1046 | struct module **new_modlist = NULL; | |
1047 | ||
1048 | if((num_mods + 1) < max_mods) | |
1049 | return; | |
1050 | ||
8e43b0b4 | 1051 | new_modlist = (struct module **) rb_malloc(sizeof(struct module) * |
212380e3 | 1052 | (max_mods + MODS_INCREMENT)); |
1053 | memcpy((void *) new_modlist, (void *) modlist, sizeof(struct module) * num_mods); | |
1054 | ||
90a3c35b | 1055 | rb_free(modlist); |
212380e3 | 1056 | modlist = new_modlist; |
1057 | max_mods += MODS_INCREMENT; | |
1058 | } | |
1059 | ||
1060 | #else /* STATIC_MODULES */ | |
1061 | ||
1062 | /* load_all_modules() | |
1063 | * | |
1064 | * input - | |
1065 | * output - | |
1066 | * side effects - all the msgtabs are added for static modules | |
1067 | */ | |
1068 | void | |
1069 | load_all_modules(int warn) | |
1070 | { | |
1071 | load_static_modules(); | |
1072 | } | |
1073 | ||
1074 | #endif /* STATIC_MODULES */ |