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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 | * | |
212380e3 | 24 | */ |
25 | ||
26 | #include "stdinc.h" | |
27 | ||
28 | ||
29 | #include "modules.h" | |
d3455e2c | 30 | #include "logger.h" |
212380e3 | 31 | #include "ircd.h" |
32 | #include "client.h" | |
33 | #include "send.h" | |
34 | #include "s_conf.h" | |
35 | #include "s_newconf.h" | |
36 | #include "numeric.h" | |
37 | #include "parse.h" | |
38 | #include "ircd_defs.h" | |
13ae2f4b | 39 | #include "match.h" |
e31b740d | 40 | #include "s_serv.h" |
212380e3 | 41 | |
42 | ||
43 | ||
44 | /* -TimeMr14C: | |
45 | * I have moved the dl* function definitions and | |
46 | * the two functions (load_a_module / unload_a_module) to the | |
47 | * file dynlink.c | |
48 | * And also made the necessary changes to those functions | |
49 | * to comply with shl_load and friends. | |
50 | * In this file, to keep consistency with the makefile, | |
51 | * I added the ability to load *.sl files, too. | |
52 | * 27/02/2002 | |
53 | */ | |
54 | ||
55 | #ifndef STATIC_MODULES | |
56 | ||
57 | struct module **modlist = NULL; | |
58 | ||
59 | static const char *core_module_table[] = { | |
65b8e002 | 60 | "m_ban", |
212380e3 | 61 | "m_die", |
62 | "m_error", | |
63 | "m_join", | |
64 | "m_kick", | |
65 | "m_kill", | |
66 | "m_message", | |
fb87421d | 67 | "m_metadata", |
212380e3 | 68 | "m_mode", |
69 | "m_nick", | |
70 | "m_part", | |
71 | "m_quit", | |
72 | "m_server", | |
212380e3 | 73 | "m_squit", |
74 | NULL | |
75 | }; | |
76 | ||
77 | #define MODS_INCREMENT 10 | |
78 | int num_mods = 0; | |
79 | int max_mods = MODS_INCREMENT; | |
80 | ||
af81d5a0 | 81 | static rb_dlink_list mod_paths; |
212380e3 | 82 | |
83 | static int mo_modload(struct Client *, struct Client *, int, const char **); | |
84 | static int mo_modlist(struct Client *, struct Client *, int, const char **); | |
85 | static int mo_modreload(struct Client *, struct Client *, int, const char **); | |
86 | static int mo_modunload(struct Client *, struct Client *, int, const char **); | |
87 | static int mo_modrestart(struct Client *, struct Client *, int, const char **); | |
88 | ||
e31b740d JH |
89 | static int me_modload(struct Client *, struct Client *, int, const char **); |
90 | static int me_modlist(struct Client *, struct Client *, int, const char **); | |
91 | static int me_modreload(struct Client *, struct Client *, int, const char **); | |
92 | static int me_modunload(struct Client *, struct Client *, int, const char **); | |
93 | static int me_modrestart(struct Client *, struct Client *, int, const char **); | |
94 | ||
95 | static int do_modload(struct Client *, const char *); | |
96 | static int do_modunload(struct Client *, const char *); | |
97 | static int do_modreload(struct Client *, const char *); | |
98 | static int do_modlist(struct Client *, const char *); | |
99 | static int do_modrestart(struct Client *); | |
100 | ||
212380e3 | 101 | struct Message modload_msgtab = { |
102 | "MODLOAD", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 103 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modload, 2}, {mo_modload, 2}} |
212380e3 | 104 | }; |
105 | ||
106 | struct Message modunload_msgtab = { | |
107 | "MODUNLOAD", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 108 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modunload, 2}, {mo_modunload, 2}} |
212380e3 | 109 | }; |
110 | ||
111 | struct Message modreload_msgtab = { | |
112 | "MODRELOAD", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 113 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modreload, 2}, {mo_modreload, 2}} |
212380e3 | 114 | }; |
115 | ||
116 | struct Message modlist_msgtab = { | |
117 | "MODLIST", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 118 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modlist, 0}, {mo_modlist, 0}} |
212380e3 | 119 | }; |
120 | ||
121 | struct Message modrestart_msgtab = { | |
122 | "MODRESTART", 0, 0, 0, MFLG_SLOW, | |
e31b740d | 123 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modrestart, 0}, {mo_modrestart, 0}} |
212380e3 | 124 | }; |
125 | ||
212380e3 | 126 | void |
127 | modules_init(void) | |
128 | { | |
129 | mod_add_cmd(&modload_msgtab); | |
130 | mod_add_cmd(&modunload_msgtab); | |
131 | mod_add_cmd(&modreload_msgtab); | |
132 | mod_add_cmd(&modlist_msgtab); | |
133 | mod_add_cmd(&modrestart_msgtab); | |
134 | ||
135 | /* Add the default paths we look in to the module system --nenolod */ | |
136 | mod_add_path(MODPATH); | |
137 | mod_add_path(AUTOMODPATH); | |
138 | } | |
139 | ||
140 | /* mod_find_path() | |
141 | * | |
142 | * input - path | |
143 | * output - none | |
144 | * side effects - returns a module path from path | |
145 | */ | |
146 | static struct module_path * | |
147 | mod_find_path(const char *path) | |
148 | { | |
af81d5a0 | 149 | rb_dlink_node *ptr; |
212380e3 | 150 | struct module_path *mpath; |
151 | ||
8e69bb4e | 152 | RB_DLINK_FOREACH(ptr, mod_paths.head) |
212380e3 | 153 | { |
154 | mpath = ptr->data; | |
155 | ||
156 | if(!strcmp(path, mpath->path)) | |
157 | return mpath; | |
158 | } | |
159 | ||
160 | return NULL; | |
161 | } | |
162 | ||
163 | /* mod_add_path | |
164 | * | |
165 | * input - path | |
166 | * ouput - | |
167 | * side effects - adds path to list | |
168 | */ | |
169 | void | |
170 | mod_add_path(const char *path) | |
171 | { | |
172 | struct module_path *pathst; | |
173 | ||
174 | if(mod_find_path(path)) | |
175 | return; | |
176 | ||
8e43b0b4 | 177 | pathst = rb_malloc(sizeof(struct module_path)); |
212380e3 | 178 | |
179 | strcpy(pathst->path, path); | |
af81d5a0 | 180 | rb_dlinkAddAlloc(pathst, &mod_paths); |
212380e3 | 181 | } |
182 | ||
183 | /* mod_clear_paths() | |
184 | * | |
185 | * input - | |
186 | * output - | |
187 | * side effects - clear the lists of paths | |
188 | */ | |
189 | void | |
190 | mod_clear_paths(void) | |
191 | { | |
90a3c35b | 192 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 193 | |
90a3c35b | 194 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, mod_paths.head) |
212380e3 | 195 | { |
90a3c35b | 196 | rb_free(ptr->data); |
3c8a7c39 | 197 | rb_free_rb_dlink_node(ptr); |
212380e3 | 198 | } |
199 | ||
200 | mod_paths.head = mod_paths.tail = NULL; | |
201 | mod_paths.length = 0; | |
202 | } | |
203 | ||
212380e3 | 204 | /* findmodule_byname |
205 | * | |
206 | * input - | |
207 | * output - | |
208 | * side effects - | |
209 | */ | |
210 | ||
211 | int | |
212 | findmodule_byname(const char *name) | |
213 | { | |
214 | int i; | |
215 | ||
216 | for (i = 0; i < num_mods; i++) | |
217 | { | |
218 | if(!irccmp(modlist[i]->name, name)) | |
219 | return i; | |
220 | } | |
221 | return -1; | |
222 | } | |
223 | ||
224 | /* load_all_modules() | |
225 | * | |
226 | * input - | |
227 | * output - | |
228 | * side effects - | |
229 | */ | |
230 | void | |
231 | load_all_modules(int warn) | |
232 | { | |
233 | DIR *system_module_dir = NULL; | |
234 | struct dirent *ldirent = NULL; | |
235 | char module_fq_name[PATH_MAX + 1]; | |
236 | int len; | |
237 | ||
238 | modules_init(); | |
239 | ||
8e43b0b4 | 240 | modlist = (struct module **) rb_malloc(sizeof(struct module) * (MODS_INCREMENT)); |
212380e3 | 241 | |
242 | max_mods = MODS_INCREMENT; | |
243 | ||
244 | system_module_dir = opendir(AUTOMODPATH); | |
245 | ||
246 | if(system_module_dir == NULL) | |
247 | { | |
248 | ilog(L_MAIN, "Could not load modules from %s: %s", AUTOMODPATH, strerror(errno)); | |
249 | return; | |
250 | } | |
251 | ||
252 | while ((ldirent = readdir(system_module_dir)) != NULL) | |
253 | { | |
254 | len = strlen(ldirent->d_name); | |
255 | if((len > 3) && !strcmp(ldirent->d_name+len-3, SHARED_SUFFIX)) | |
256 | { | |
38e6acdd | 257 | (void) rb_snprintf(module_fq_name, sizeof(module_fq_name), "%s/%s", AUTOMODPATH, ldirent->d_name); |
212380e3 | 258 | (void) load_a_module(module_fq_name, warn, 0); |
259 | } | |
260 | ||
261 | } | |
262 | (void) closedir(system_module_dir); | |
263 | } | |
264 | ||
265 | /* load_core_modules() | |
266 | * | |
267 | * input - | |
268 | * output - | |
269 | * side effects - core modules are loaded, if any fail, kill ircd | |
270 | */ | |
271 | void | |
272 | load_core_modules(int warn) | |
273 | { | |
274 | char module_name[MAXPATHLEN]; | |
275 | int i; | |
276 | ||
277 | ||
278 | for (i = 0; core_module_table[i]; i++) | |
279 | { | |
38e6acdd | 280 | rb_snprintf(module_name, sizeof(module_name), "%s/%s%s", MODPATH, |
212380e3 | 281 | core_module_table[i], SHARED_SUFFIX); |
282 | ||
283 | if(load_a_module(module_name, warn, 1) == -1) | |
284 | { | |
285 | ilog(L_MAIN, | |
286 | "Error loading core module %s%s: terminating ircd", | |
287 | core_module_table[i], SHARED_SUFFIX); | |
288 | exit(0); | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
293 | /* load_one_module() | |
294 | * | |
295 | * input - | |
296 | * output - | |
297 | * side effects - | |
298 | */ | |
299 | int | |
300 | load_one_module(const char *path, int coremodule) | |
301 | { | |
302 | char modpath[MAXPATHLEN]; | |
af81d5a0 | 303 | rb_dlink_node *pathst; |
212380e3 | 304 | struct module_path *mpath; |
305 | ||
306 | struct stat statbuf; | |
307 | ||
308 | if (server_state_foreground == 1) | |
309 | inotice("loading module %s ...", path); | |
310 | ||
8e69bb4e | 311 | RB_DLINK_FOREACH(pathst, mod_paths.head) |
212380e3 | 312 | { |
313 | mpath = pathst->data; | |
314 | ||
38e6acdd | 315 | rb_snprintf(modpath, sizeof(modpath), "%s/%s", mpath->path, path); |
212380e3 | 316 | if((strstr(modpath, "../") == NULL) && (strstr(modpath, "/..") == NULL)) |
317 | { | |
318 | if(stat(modpath, &statbuf) == 0) | |
319 | { | |
320 | if(S_ISREG(statbuf.st_mode)) | |
321 | { | |
322 | /* Regular files only please */ | |
323 | if(coremodule) | |
324 | return load_a_module(modpath, 1, 1); | |
325 | else | |
326 | return load_a_module(modpath, 1, 0); | |
327 | } | |
328 | } | |
329 | ||
330 | } | |
331 | } | |
332 | ||
3232087a | 333 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Cannot locate module %s", path); |
212380e3 | 334 | return -1; |
335 | } | |
336 | ||
337 | ||
338 | /* load a module .. */ | |
339 | static int | |
340 | mo_modload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
341 | { | |
212380e3 | 342 | if(!IsOperAdmin(source_p)) |
343 | { | |
344 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
345 | me.name, source_p->name, "admin"); | |
346 | return 0; | |
347 | } | |
348 | ||
e31b740d JH |
349 | if(parc > 2) |
350 | { | |
351 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
352 | "ENCAP %s MODLOAD %s", parv[2], parv[1]); | |
353 | if (match(parv[2], me.name) == 0) | |
354 | return 0; | |
355 | } | |
356 | ||
357 | return do_modload(source_p, parv[1]); | |
358 | } | |
359 | ||
360 | static int | |
361 | me_modload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
362 | { | |
363 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
364 | { | |
365 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
366 | "to load modules on this server."); | |
367 | return 0; | |
368 | } | |
369 | ||
370 | return do_modload(source_p, parv[1]); | |
371 | } | |
372 | ||
373 | static int | |
374 | do_modload(struct Client *source_p, const char *module) | |
375 | { | |
376 | char *m_bn = rb_basename(module); | |
212380e3 | 377 | |
378 | if(findmodule_byname(m_bn) != -1) | |
379 | { | |
5366977b | 380 | sendto_one_notice(source_p, ":Module %s is already loaded", m_bn); |
90a3c35b | 381 | rb_free(m_bn); |
212380e3 | 382 | return 0; |
383 | } | |
384 | ||
e31b740d | 385 | load_one_module(module, 0); |
212380e3 | 386 | |
90a3c35b | 387 | rb_free(m_bn); |
212380e3 | 388 | |
389 | return 0; | |
390 | } | |
391 | ||
392 | ||
393 | /* unload a module .. */ | |
394 | static int | |
395 | mo_modunload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
396 | { | |
212380e3 | 397 | if(!IsOperAdmin(source_p)) |
398 | { | |
399 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
400 | me.name, source_p->name, "admin"); | |
401 | return 0; | |
402 | } | |
403 | ||
e31b740d JH |
404 | if(parc > 2) |
405 | { | |
406 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
407 | "ENCAP %s MODUNLOAD %s", parv[2], parv[1]); | |
408 | if (match(parv[2], me.name) == 0) | |
409 | return 0; | |
410 | } | |
411 | ||
412 | return do_modunload(source_p, parv[1]); | |
413 | } | |
414 | ||
415 | static int | |
416 | me_modunload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
417 | { | |
418 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
419 | { | |
420 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
421 | "to load modules on this server."); | |
422 | return 0; | |
423 | } | |
424 | ||
425 | return do_modunload(source_p, parv[1]); | |
426 | } | |
427 | ||
428 | static int | |
429 | do_modunload(struct Client *source_p, const char *module) | |
430 | { | |
431 | int modindex; | |
432 | char *m_bn = rb_basename(module); | |
212380e3 | 433 | |
434 | if((modindex = findmodule_byname(m_bn)) == -1) | |
435 | { | |
5366977b | 436 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
90a3c35b | 437 | rb_free(m_bn); |
212380e3 | 438 | return 0; |
439 | } | |
440 | ||
441 | if(modlist[modindex]->core == 1) | |
442 | { | |
5366977b | 443 | sendto_one_notice(source_p, ":Module %s is a core module and may not be unloaded", m_bn); |
90a3c35b | 444 | rb_free(m_bn); |
212380e3 | 445 | return 0; |
446 | } | |
447 | ||
448 | if(unload_one_module(m_bn, 1) == -1) | |
449 | { | |
5366977b | 450 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
212380e3 | 451 | } |
5366977b | 452 | |
90a3c35b | 453 | rb_free(m_bn); |
212380e3 | 454 | return 0; |
455 | } | |
456 | ||
457 | /* unload and load in one! */ | |
458 | static int | |
459 | mo_modreload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
460 | { | |
212380e3 | 461 | if(!IsOperAdmin(source_p)) |
462 | { | |
463 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
464 | me.name, source_p->name, "admin"); | |
465 | return 0; | |
466 | } | |
467 | ||
e31b740d JH |
468 | if(parc > 2) |
469 | { | |
470 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
471 | "ENCAP %s MODRELOAD %s", parv[2], parv[1]); | |
472 | if (match(parv[2], me.name) == 0) | |
473 | return 0; | |
474 | } | |
475 | ||
476 | return do_modreload(source_p, parv[1]); | |
477 | } | |
478 | ||
479 | static int | |
480 | me_modreload(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
481 | { | |
482 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
483 | { | |
484 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
485 | "to load modules on this server."); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | return do_modreload(source_p, parv[1]); | |
490 | } | |
491 | ||
492 | static int | |
493 | do_modreload(struct Client *source_p, const char *module) | |
494 | { | |
495 | int modindex; | |
496 | int check_core; | |
497 | char *m_bn = rb_basename(module); | |
212380e3 | 498 | |
499 | if((modindex = findmodule_byname(m_bn)) == -1) | |
500 | { | |
5366977b | 501 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
90a3c35b | 502 | rb_free(m_bn); |
212380e3 | 503 | return 0; |
504 | } | |
505 | ||
506 | check_core = modlist[modindex]->core; | |
507 | ||
508 | if(unload_one_module(m_bn, 1) == -1) | |
509 | { | |
5366977b | 510 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
90a3c35b | 511 | rb_free(m_bn); |
212380e3 | 512 | return 0; |
513 | } | |
514 | ||
4b253d3b | 515 | if((load_one_module(m_bn, check_core) == -1) && check_core) |
212380e3 | 516 | { |
3232087a | 517 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
4b253d3b WP |
518 | "Error reloading core module: %s: terminating ircd", m_bn); |
519 | ilog(L_MAIN, "Error loading core module %s: terminating ircd", m_bn); | |
212380e3 | 520 | exit(0); |
521 | } | |
522 | ||
90a3c35b | 523 | rb_free(m_bn); |
212380e3 | 524 | return 0; |
525 | } | |
526 | ||
527 | /* list modules .. */ | |
528 | static int | |
529 | mo_modlist(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
530 | { | |
212380e3 | 531 | if(!IsOperAdmin(source_p)) |
532 | { | |
533 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
534 | me.name, source_p->name, "admin"); | |
535 | return 0; | |
536 | } | |
537 | ||
e31b740d JH |
538 | if(parc > 2) |
539 | { | |
540 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
541 | "ENCAP %s MODLIST %s", parv[2], parv[1]); | |
542 | if (match(parv[2], me.name) == 0) | |
543 | return 0; | |
544 | } | |
545 | ||
546 | return do_modlist(source_p, parc > 1 ? parv[1] : 0); | |
547 | } | |
548 | ||
549 | static int | |
550 | me_modlist(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
551 | { | |
552 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
553 | { | |
554 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
555 | "to load modules on this server."); | |
556 | return 0; | |
557 | } | |
558 | ||
559 | return do_modlist(source_p, parv[1]); | |
560 | } | |
561 | ||
562 | static int | |
563 | do_modlist(struct Client *source_p, const char *pattern) | |
564 | { | |
565 | int i; | |
566 | ||
212380e3 | 567 | for (i = 0; i < num_mods; i++) |
568 | { | |
e31b740d | 569 | if(pattern) |
212380e3 | 570 | { |
e31b740d | 571 | if(match(pattern, modlist[i]->name)) |
212380e3 | 572 | { |
573 | sendto_one(source_p, form_str(RPL_MODLIST), | |
574 | me.name, source_p->name, | |
575 | modlist[i]->name, | |
576 | modlist[i]->address, | |
577 | modlist[i]->version, modlist[i]->core ? "(core)" : ""); | |
578 | } | |
579 | } | |
580 | else | |
581 | { | |
582 | sendto_one(source_p, form_str(RPL_MODLIST), | |
583 | me.name, source_p->name, modlist[i]->name, | |
584 | modlist[i]->address, modlist[i]->version, | |
585 | modlist[i]->core ? "(core)" : ""); | |
586 | } | |
587 | } | |
588 | ||
589 | sendto_one(source_p, form_str(RPL_ENDOFMODLIST), me.name, source_p->name); | |
590 | return 0; | |
591 | } | |
592 | ||
593 | /* unload and reload all modules */ | |
594 | static int | |
595 | mo_modrestart(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
596 | { | |
212380e3 | 597 | if(!IsOperAdmin(source_p)) |
598 | { | |
599 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
600 | me.name, source_p->name, "admin"); | |
601 | return 0; | |
602 | } | |
603 | ||
e31b740d JH |
604 | if(parc > 1) |
605 | { | |
606 | sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS, | |
607 | "ENCAP %s MODRESTART", parv[1]); | |
608 | if (match(parv[1], me.name) == 0) | |
609 | return 0; | |
610 | } | |
611 | ||
612 | return do_modrestart(source_p); | |
613 | } | |
614 | ||
615 | static int | |
616 | me_modrestart(struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
617 | { | |
618 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
619 | { | |
620 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
621 | "to load modules on this server."); | |
622 | return 0; | |
623 | } | |
624 | ||
625 | return do_modrestart(source_p); | |
626 | } | |
627 | ||
628 | static int | |
629 | do_modrestart(struct Client *source_p) | |
630 | { | |
631 | int modnum; | |
632 | ||
5366977b | 633 | sendto_one_notice(source_p, ":Reloading all modules"); |
212380e3 | 634 | |
635 | modnum = num_mods; | |
636 | while (num_mods) | |
637 | unload_one_module(modlist[0]->name, 0); | |
638 | ||
639 | load_all_modules(0); | |
640 | load_core_modules(0); | |
641 | rehash(0); | |
642 | ||
3232087a | 643 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 644 | "Module Restart: %d modules unloaded, %d modules loaded", |
645 | modnum, num_mods); | |
646 | ilog(L_MAIN, "Module Restart: %d modules unloaded, %d modules loaded", modnum, num_mods); | |
647 | return 0; | |
648 | } | |
649 | ||
650 | ||
651 | ||
652 | #ifndef RTLD_NOW | |
653 | #define RTLD_NOW RTLD_LAZY /* openbsd deficiency */ | |
654 | #endif | |
655 | ||
1386c9a7 JT |
656 | #ifndef RTLD_LOCAL |
657 | #define RTLD_LOCAL 0 | |
658 | #endif | |
659 | ||
212380e3 | 660 | #ifdef CHARYBDIS_PROFILE |
661 | # ifndef RTLD_PROFILE | |
662 | # warning libdl may not support profiling, sucks. :( | |
663 | # define RTLD_PROFILE 0 | |
664 | # endif | |
665 | #endif | |
666 | ||
667 | static void increase_modlist(void); | |
668 | ||
669 | #define MODS_INCREMENT 10 | |
670 | ||
671 | static char unknown_ver[] = "<unknown>"; | |
672 | ||
673 | /* This file contains the core functions to use dynamic libraries. | |
674 | * -TimeMr14C | |
675 | */ | |
676 | ||
677 | ||
678 | #ifdef HAVE_MACH_O_DYLD_H | |
679 | /* | |
680 | ** jmallett's dl*(3) shims for NSModule(3) systems. | |
681 | */ | |
682 | #include <mach-o/dyld.h> | |
683 | ||
684 | #ifndef HAVE_DLOPEN | |
685 | #ifndef RTLD_LAZY | |
686 | #define RTLD_LAZY 2185 /* built-in dl*(3) don't care */ | |
687 | #endif | |
688 | ||
689 | void undefinedErrorHandler(const char *); | |
690 | NSModule multipleErrorHandler(NSSymbol, NSModule, NSModule); | |
691 | void linkEditErrorHandler(NSLinkEditErrors, int, const char *, const char *); | |
692 | char *dlerror(void); | |
693 | void *dlopen(char *, int); | |
694 | int dlclose(void *); | |
695 | void *dlsym(void *, char *); | |
696 | ||
697 | static int firstLoad = TRUE; | |
698 | static int myDlError; | |
699 | static char *myErrorTable[] = { "Loading file as object failed\n", | |
700 | "Loading file as object succeeded\n", | |
701 | "Not a valid shared object\n", | |
702 | "Architecture of object invalid on this architecture\n", | |
703 | "Invalid or corrupt image\n", | |
704 | "Could not access object\n", | |
705 | "NSCreateObjectFileImageFromFile failed\n", | |
706 | NULL | |
707 | }; | |
708 | ||
709 | void | |
710 | undefinedErrorHandler(const char *symbolName) | |
711 | { | |
3232087a | 712 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Undefined symbol: %s", symbolName); |
212380e3 | 713 | ilog(L_MAIN, "Undefined symbol: %s", symbolName); |
714 | return; | |
715 | } | |
716 | ||
717 | NSModule | |
718 | multipleErrorHandler(NSSymbol s, NSModule old, NSModule new) | |
719 | { | |
720 | /* XXX | |
721 | ** This results in substantial leaking of memory... Should free one | |
722 | ** module, maybe? | |
723 | */ | |
3232087a | 724 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 725 | "Symbol `%s' found in `%s' and `%s'", |
726 | NSNameOfSymbol(s), NSNameOfModule(old), NSNameOfModule(new)); | |
727 | ilog(L_MAIN, "Symbol `%s' found in `%s' and `%s'", | |
728 | NSNameOfSymbol(s), NSNameOfModule(old), NSNameOfModule(new)); | |
729 | /* We return which module should be considered valid, I believe */ | |
730 | return new; | |
731 | } | |
732 | ||
733 | void | |
734 | linkEditErrorHandler(NSLinkEditErrors errorClass, int errnum, | |
735 | const char *fileName, const char *errorString) | |
736 | { | |
3232087a | 737 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 738 | "Link editor error: %s for %s", errorString, fileName); |
739 | ilog(L_MAIN, "Link editor error: %s for %s", errorString, fileName); | |
740 | return; | |
741 | } | |
742 | ||
743 | char * | |
744 | dlerror(void) | |
745 | { | |
746 | return myDlError == NSObjectFileImageSuccess ? NULL : myErrorTable[myDlError % 7]; | |
747 | } | |
748 | ||
749 | void * | |
750 | dlopen(char *filename, int unused) | |
751 | { | |
752 | NSObjectFileImage myImage; | |
753 | NSModule myModule; | |
754 | ||
755 | if(firstLoad) | |
756 | { | |
757 | /* | |
758 | ** If we are loading our first symbol (huzzah!) we should go ahead | |
759 | ** and install link editor error handling! | |
760 | */ | |
761 | NSLinkEditErrorHandlers linkEditorErrorHandlers; | |
762 | ||
763 | linkEditorErrorHandlers.undefined = undefinedErrorHandler; | |
764 | linkEditorErrorHandlers.multiple = multipleErrorHandler; | |
765 | linkEditorErrorHandlers.linkEdit = linkEditErrorHandler; | |
766 | NSInstallLinkEditErrorHandlers(&linkEditorErrorHandlers); | |
767 | firstLoad = FALSE; | |
768 | } | |
769 | myDlError = NSCreateObjectFileImageFromFile(filename, &myImage); | |
770 | if(myDlError != NSObjectFileImageSuccess) | |
771 | { | |
772 | return NULL; | |
773 | } | |
774 | myModule = NSLinkModule(myImage, filename, NSLINKMODULE_OPTION_PRIVATE); | |
775 | return (void *) myModule; | |
776 | } | |
777 | ||
778 | int | |
779 | dlclose(void *myModule) | |
780 | { | |
781 | NSUnLinkModule(myModule, FALSE); | |
782 | return 0; | |
783 | } | |
784 | ||
785 | void * | |
786 | dlsym(void *myModule, char *mySymbolName) | |
787 | { | |
788 | NSSymbol mySymbol; | |
789 | ||
790 | mySymbol = NSLookupSymbolInModule((NSModule) myModule, mySymbolName); | |
791 | return NSAddressOfSymbol(mySymbol); | |
792 | } | |
793 | #endif | |
794 | #endif | |
795 | ||
796 | ||
797 | /* | |
798 | * HPUX dl compat functions | |
799 | */ | |
800 | #if defined(HAVE_SHL_LOAD) && !defined(HAVE_DLOPEN) | |
801 | #define RTLD_LAZY BIND_DEFERRED | |
802 | #define RTLD_GLOBAL DYNAMIC_PATH | |
803 | #define dlopen(file,mode) (void *)shl_load((file), (mode), (long) 0) | |
804 | #define dlclose(handle) shl_unload((shl_t)(handle)) | |
805 | #define dlsym(handle,name) hpux_dlsym(handle,name) | |
806 | #define dlerror() strerror(errno) | |
807 | ||
808 | static void * | |
809 | hpux_dlsym(void *handle, char *name) | |
810 | { | |
811 | void *sym_addr; | |
812 | if(!shl_findsym((shl_t *) & handle, name, TYPE_UNDEFINED, &sym_addr)) | |
813 | return sym_addr; | |
814 | return NULL; | |
815 | } | |
816 | ||
817 | #endif | |
818 | ||
819 | /* unload_one_module() | |
820 | * | |
821 | * inputs - name of module to unload | |
822 | * - 1 to say modules unloaded, 0 to not | |
823 | * output - 0 if successful, -1 if error | |
824 | * side effects - module is unloaded | |
825 | */ | |
826 | int | |
827 | unload_one_module(const char *name, int warn) | |
828 | { | |
829 | int modindex; | |
830 | ||
831 | if((modindex = findmodule_byname(name)) == -1) | |
832 | return -1; | |
833 | ||
834 | /* | |
835 | ** XXX - The type system in C does not allow direct conversion between | |
836 | ** data and function pointers, but as it happens, most C compilers will | |
837 | ** safely do this, however it is a theoretical overlow to cast as we | |
838 | ** must do here. I have library functions to take care of this, but | |
839 | ** despite being more "correct" for the C language, this is more | |
840 | ** practical. Removing the abuse of the ability to cast ANY pointer | |
841 | ** to and from an integer value here will break some compilers. | |
842 | ** -jmallett | |
843 | */ | |
844 | /* Left the comment in but the code isn't here any more -larne */ | |
845 | switch (modlist[modindex]->mapi_version) | |
846 | { | |
847 | case 1: | |
848 | { | |
849 | struct mapi_mheader_av1 *mheader = modlist[modindex]->mapi_header; | |
850 | if(mheader->mapi_command_list) | |
851 | { | |
852 | struct Message **m; | |
853 | for (m = mheader->mapi_command_list; *m; ++m) | |
854 | mod_del_cmd(*m); | |
855 | } | |
856 | ||
857 | /* hook events are never removed, we simply lose the | |
858 | * ability to call them --fl | |
859 | */ | |
860 | if(mheader->mapi_hfn_list) | |
861 | { | |
862 | mapi_hfn_list_av1 *m; | |
863 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
864 | remove_hook(m->hapi_name, m->fn); | |
865 | } | |
866 | ||
867 | if(mheader->mapi_unregister) | |
868 | mheader->mapi_unregister(); | |
869 | break; | |
870 | } | |
871 | default: | |
3232087a | 872 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 873 | "Unknown/unsupported MAPI version %d when unloading %s!", |
874 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
875 | ilog(L_MAIN, "Unknown/unsupported MAPI version %d when unloading %s!", | |
876 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
877 | break; | |
878 | } | |
879 | ||
880 | dlclose(modlist[modindex]->address); | |
881 | ||
90a3c35b | 882 | rb_free(modlist[modindex]->name); |
a4893a45 | 883 | memmove(&modlist[modindex], &modlist[modindex + 1], |
212380e3 | 884 | sizeof(struct module) * ((num_mods - 1) - modindex)); |
885 | ||
886 | if(num_mods != 0) | |
887 | num_mods--; | |
888 | ||
889 | if(warn == 1) | |
890 | { | |
891 | ilog(L_MAIN, "Module %s unloaded", name); | |
3232087a | 892 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Module %s unloaded", name); |
212380e3 | 893 | } |
894 | ||
895 | return 0; | |
896 | } | |
897 | ||
898 | ||
899 | /* | |
900 | * load_a_module() | |
901 | * | |
902 | * inputs - path name of module, int to notice, int of core | |
903 | * output - -1 if error 0 if success | |
904 | * side effects - loads a module if successful | |
905 | */ | |
906 | int | |
907 | load_a_module(const char *path, int warn, int core) | |
908 | { | |
909 | void *tmpptr = NULL; | |
910 | ||
911 | char *mod_basename; | |
912 | const char *ver; | |
913 | ||
914 | int *mapi_version; | |
915 | ||
3b0f3294 | 916 | mod_basename = rb_basename(path); |
212380e3 | 917 | |
918 | #ifdef CHARYBDIS_PROFILE | |
1386c9a7 | 919 | tmpptr = dlopen(path, RTLD_NOW | RTLD_LOCAL | RTLD_PROFILE); |
212380e3 | 920 | #else |
1386c9a7 | 921 | tmpptr = dlopen(path, RTLD_NOW | RTLD_LOCAL); |
212380e3 | 922 | #endif |
923 | ||
924 | if(tmpptr == NULL) | |
925 | { | |
926 | const char *err = dlerror(); | |
927 | ||
3232087a | 928 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 929 | "Error loading module %s: %s", mod_basename, err); |
930 | ilog(L_MAIN, "Error loading module %s: %s", mod_basename, err); | |
90a3c35b | 931 | rb_free(mod_basename); |
212380e3 | 932 | return -1; |
933 | } | |
934 | ||
935 | ||
936 | /* | |
937 | * _mheader is actually a struct mapi_mheader_*, but mapi_version | |
938 | * is always the first member of this structure, so we treate it | |
939 | * as a single int in order to determine the API version. | |
940 | * -larne. | |
941 | */ | |
942 | mapi_version = (int *) (uintptr_t) dlsym(tmpptr, "_mheader"); | |
943 | if((mapi_version == NULL | |
944 | && (mapi_version = (int *) (uintptr_t) dlsym(tmpptr, "__mheader")) == NULL) | |
945 | || MAPI_MAGIC(*mapi_version) != MAPI_MAGIC_HDR) | |
946 | { | |
3232087a | 947 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 948 | "Data format error: module %s has no MAPI header.", |
949 | mod_basename); | |
950 | ilog(L_MAIN, "Data format error: module %s has no MAPI header.", mod_basename); | |
951 | (void) dlclose(tmpptr); | |
90a3c35b | 952 | rb_free(mod_basename); |
212380e3 | 953 | return -1; |
954 | } | |
955 | ||
956 | switch (MAPI_VERSION(*mapi_version)) | |
957 | { | |
958 | case 1: | |
959 | { | |
960 | struct mapi_mheader_av1 *mheader = (struct mapi_mheader_av1 *) mapi_version; /* see above */ | |
961 | if(mheader->mapi_register && (mheader->mapi_register() == -1)) | |
962 | { | |
963 | ilog(L_MAIN, "Module %s indicated failure during load.", | |
964 | mod_basename); | |
3232087a | 965 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 966 | "Module %s indicated failure during load.", |
967 | mod_basename); | |
968 | dlclose(tmpptr); | |
90a3c35b | 969 | rb_free(mod_basename); |
212380e3 | 970 | return -1; |
971 | } | |
972 | if(mheader->mapi_command_list) | |
973 | { | |
974 | struct Message **m; | |
975 | for (m = mheader->mapi_command_list; *m; ++m) | |
976 | mod_add_cmd(*m); | |
977 | } | |
978 | ||
979 | if(mheader->mapi_hook_list) | |
980 | { | |
981 | mapi_hlist_av1 *m; | |
982 | for (m = mheader->mapi_hook_list; m->hapi_name; ++m) | |
983 | *m->hapi_id = register_hook(m->hapi_name); | |
984 | } | |
985 | ||
986 | if(mheader->mapi_hfn_list) | |
987 | { | |
988 | mapi_hfn_list_av1 *m; | |
989 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
990 | add_hook(m->hapi_name, m->fn); | |
991 | } | |
992 | ||
993 | ver = mheader->mapi_module_version; | |
994 | break; | |
995 | } | |
996 | ||
997 | default: | |
998 | ilog(L_MAIN, "Module %s has unknown/unsupported MAPI version %d.", | |
999 | mod_basename, MAPI_VERSION(*mapi_version)); | |
3232087a | 1000 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 1001 | "Module %s has unknown/unsupported MAPI version %d.", |
1002 | mod_basename, *mapi_version); | |
1003 | dlclose(tmpptr); | |
90a3c35b | 1004 | rb_free(mod_basename); |
212380e3 | 1005 | return -1; |
1006 | } | |
1007 | ||
1008 | if(ver == NULL) | |
1009 | ver = unknown_ver; | |
1010 | ||
1011 | increase_modlist(); | |
1012 | ||
8e43b0b4 | 1013 | modlist[num_mods] = rb_malloc(sizeof(struct module)); |
212380e3 | 1014 | modlist[num_mods]->address = tmpptr; |
1015 | modlist[num_mods]->version = ver; | |
1016 | modlist[num_mods]->core = core; | |
62d28946 | 1017 | modlist[num_mods]->name = rb_strdup(mod_basename); |
212380e3 | 1018 | modlist[num_mods]->mapi_header = mapi_version; |
1019 | modlist[num_mods]->mapi_version = MAPI_VERSION(*mapi_version); | |
1020 | num_mods++; | |
1021 | ||
1022 | if(warn == 1) | |
1023 | { | |
3232087a | 1024 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 | 1025 | "Module %s [version: %s; MAPI version: %d] loaded at 0x%lx", |
1026 | mod_basename, ver, MAPI_VERSION(*mapi_version), | |
1027 | (unsigned long) tmpptr); | |
1028 | ilog(L_MAIN, "Module %s [version: %s; MAPI version: %d] loaded at 0x%lx", | |
1029 | mod_basename, ver, MAPI_VERSION(*mapi_version), (unsigned long) tmpptr); | |
1030 | } | |
90a3c35b | 1031 | rb_free(mod_basename); |
212380e3 | 1032 | return 0; |
1033 | } | |
1034 | ||
1035 | /* | |
1036 | * increase_modlist | |
1037 | * | |
1038 | * inputs - NONE | |
1039 | * output - NONE | |
1040 | * side effects - expand the size of modlist if necessary | |
1041 | */ | |
1042 | static void | |
1043 | increase_modlist(void) | |
1044 | { | |
1045 | struct module **new_modlist = NULL; | |
1046 | ||
1047 | if((num_mods + 1) < max_mods) | |
1048 | return; | |
1049 | ||
8e43b0b4 | 1050 | new_modlist = (struct module **) rb_malloc(sizeof(struct module) * |
212380e3 | 1051 | (max_mods + MODS_INCREMENT)); |
1052 | memcpy((void *) new_modlist, (void *) modlist, sizeof(struct module) * num_mods); | |
1053 | ||
90a3c35b | 1054 | rb_free(modlist); |
212380e3 | 1055 | modlist = new_modlist; |
1056 | max_mods += MODS_INCREMENT; | |
1057 | } | |
1058 | ||
1059 | #else /* STATIC_MODULES */ | |
1060 | ||
1061 | /* load_all_modules() | |
1062 | * | |
1063 | * input - | |
1064 | * output - | |
1065 | * side effects - all the msgtabs are added for static modules | |
1066 | */ | |
1067 | void | |
1068 | load_all_modules(int warn) | |
1069 | { | |
1070 | load_static_modules(); | |
1071 | } | |
1072 | ||
1073 | #endif /* STATIC_MODULES */ |