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Commit | Line | Data |
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212380e3 AC |
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 | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
212380e3 | 26 | #include "modules.h" |
4016731b | 27 | #include "logger.h" |
212380e3 AC |
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" | |
4562c604 | 36 | #include "match.h" |
15feac53 | 37 | #include "s_serv.h" |
212380e3 | 38 | |
f272e7ab AC |
39 | #include <ltdl.h> |
40 | ||
212380e3 AC |
41 | struct module **modlist = NULL; |
42 | ||
43 | static const char *core_module_table[] = { | |
431a1a27 | 44 | "m_ban", |
212380e3 AC |
45 | "m_die", |
46 | "m_error", | |
47 | "m_join", | |
48 | "m_kick", | |
49 | "m_kill", | |
50 | "m_message", | |
51 | "m_mode", | |
52 | "m_nick", | |
53 | "m_part", | |
54 | "m_quit", | |
55 | "m_server", | |
212380e3 AC |
56 | "m_squit", |
57 | NULL | |
58 | }; | |
59 | ||
60 | #define MODS_INCREMENT 10 | |
61 | int num_mods = 0; | |
62 | int max_mods = MODS_INCREMENT; | |
63 | ||
330fc5c1 | 64 | static rb_dlink_list mod_paths; |
212380e3 | 65 | |
4a84a763 AC |
66 | static int mo_modload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); |
67 | static int mo_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
68 | static int mo_modreload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
69 | static int mo_modunload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
70 | static int mo_modrestart(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
71 | ||
72 | static int me_modload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
73 | static int me_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
74 | static int me_modreload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
75 | static int me_modunload(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
76 | static int me_modrestart(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
15feac53 AC |
77 | |
78 | static int do_modload(struct Client *, const char *); | |
79 | static int do_modunload(struct Client *, const char *); | |
80 | static int do_modreload(struct Client *, const char *); | |
81 | static int do_modlist(struct Client *, const char *); | |
82 | static int do_modrestart(struct Client *); | |
83 | ||
212380e3 | 84 | struct Message modload_msgtab = { |
7baa37a9 | 85 | "MODLOAD", 0, 0, 0, 0, |
15feac53 | 86 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modload, 2}, {mo_modload, 2}} |
212380e3 AC |
87 | }; |
88 | ||
89 | struct Message modunload_msgtab = { | |
7baa37a9 | 90 | "MODUNLOAD", 0, 0, 0, 0, |
15feac53 | 91 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modunload, 2}, {mo_modunload, 2}} |
212380e3 AC |
92 | }; |
93 | ||
94 | struct Message modreload_msgtab = { | |
7baa37a9 | 95 | "MODRELOAD", 0, 0, 0, 0, |
15feac53 | 96 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modreload, 2}, {mo_modreload, 2}} |
212380e3 AC |
97 | }; |
98 | ||
99 | struct Message modlist_msgtab = { | |
7baa37a9 | 100 | "MODLIST", 0, 0, 0, 0, |
15feac53 | 101 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modlist, 0}, {mo_modlist, 0}} |
212380e3 AC |
102 | }; |
103 | ||
104 | struct Message modrestart_msgtab = { | |
7baa37a9 | 105 | "MODRESTART", 0, 0, 0, 0, |
15feac53 | 106 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modrestart, 0}, {mo_modrestart, 0}} |
212380e3 AC |
107 | }; |
108 | ||
212380e3 AC |
109 | void |
110 | modules_init(void) | |
111 | { | |
f272e7ab AC |
112 | if(lt_dlinit()) |
113 | { | |
114 | ilog(L_MAIN, "lt_dlinit failed"); | |
115 | exit(0); | |
116 | } | |
117 | ||
212380e3 AC |
118 | mod_add_cmd(&modload_msgtab); |
119 | mod_add_cmd(&modunload_msgtab); | |
120 | mod_add_cmd(&modreload_msgtab); | |
121 | mod_add_cmd(&modlist_msgtab); | |
122 | mod_add_cmd(&modrestart_msgtab); | |
123 | ||
124 | /* Add the default paths we look in to the module system --nenolod */ | |
125 | mod_add_path(MODPATH); | |
126 | mod_add_path(AUTOMODPATH); | |
127 | } | |
128 | ||
129 | /* mod_find_path() | |
130 | * | |
131 | * input - path | |
132 | * output - none | |
133 | * side effects - returns a module path from path | |
134 | */ | |
26c6ac3d | 135 | static char * |
212380e3 AC |
136 | mod_find_path(const char *path) |
137 | { | |
330fc5c1 | 138 | rb_dlink_node *ptr; |
26c6ac3d | 139 | char *mpath; |
212380e3 | 140 | |
5cefa1d6 | 141 | RB_DLINK_FOREACH(ptr, mod_paths.head) |
212380e3 AC |
142 | { |
143 | mpath = ptr->data; | |
144 | ||
26c6ac3d | 145 | if(!strcmp(path, mpath)) |
212380e3 AC |
146 | return mpath; |
147 | } | |
148 | ||
149 | return NULL; | |
150 | } | |
151 | ||
152 | /* mod_add_path | |
153 | * | |
154 | * input - path | |
55abcbb2 | 155 | * ouput - |
212380e3 AC |
156 | * side effects - adds path to list |
157 | */ | |
158 | void | |
159 | mod_add_path(const char *path) | |
160 | { | |
26c6ac3d | 161 | char *pathst; |
212380e3 AC |
162 | |
163 | if(mod_find_path(path)) | |
164 | return; | |
165 | ||
26c6ac3d | 166 | pathst = rb_strdup(path); |
330fc5c1 | 167 | rb_dlinkAddAlloc(pathst, &mod_paths); |
212380e3 AC |
168 | } |
169 | ||
170 | /* mod_clear_paths() | |
171 | * | |
172 | * input - | |
173 | * output - | |
174 | * side effects - clear the lists of paths | |
175 | */ | |
176 | void | |
177 | mod_clear_paths(void) | |
178 | { | |
637c4932 | 179 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 180 | |
637c4932 | 181 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, mod_paths.head) |
212380e3 | 182 | { |
637c4932 | 183 | rb_free(ptr->data); |
30106156 | 184 | rb_free_rb_dlink_node(ptr); |
212380e3 AC |
185 | } |
186 | ||
187 | mod_paths.head = mod_paths.tail = NULL; | |
188 | mod_paths.length = 0; | |
189 | } | |
190 | ||
212380e3 AC |
191 | /* findmodule_byname |
192 | * | |
193 | * input - | |
194 | * output - | |
195 | * side effects - | |
196 | */ | |
197 | ||
198 | int | |
199 | findmodule_byname(const char *name) | |
200 | { | |
201 | int i; | |
202 | ||
203 | for (i = 0; i < num_mods; i++) | |
204 | { | |
205 | if(!irccmp(modlist[i]->name, name)) | |
206 | return i; | |
207 | } | |
208 | return -1; | |
209 | } | |
210 | ||
211 | /* load_all_modules() | |
212 | * | |
213 | * input - | |
214 | * output - | |
215 | * side effects - | |
216 | */ | |
217 | void | |
218 | load_all_modules(int warn) | |
219 | { | |
220 | DIR *system_module_dir = NULL; | |
221 | struct dirent *ldirent = NULL; | |
222 | char module_fq_name[PATH_MAX + 1]; | |
223 | int len; | |
224 | ||
225 | modules_init(); | |
226 | ||
1e170010 | 227 | modlist = (struct module **) rb_malloc(sizeof(struct module *) * (MODS_INCREMENT)); |
212380e3 AC |
228 | |
229 | max_mods = MODS_INCREMENT; | |
230 | ||
231 | system_module_dir = opendir(AUTOMODPATH); | |
232 | ||
233 | if(system_module_dir == NULL) | |
234 | { | |
235 | ilog(L_MAIN, "Could not load modules from %s: %s", AUTOMODPATH, strerror(errno)); | |
236 | return; | |
237 | } | |
238 | ||
239 | while ((ldirent = readdir(system_module_dir)) != NULL) | |
240 | { | |
5203cba5 | 241 | len = strlen(ldirent->d_name); |
2a19fc3f | 242 | if((len > 3) && !strcmp(ldirent->d_name+len-3, ".la")) |
5203cba5 VI |
243 | { |
244 | (void) snprintf(module_fq_name, sizeof(module_fq_name), "%s/%s", AUTOMODPATH, ldirent->d_name); | |
245 | (void) load_a_module(module_fq_name, warn, 0); | |
246 | } | |
212380e3 AC |
247 | |
248 | } | |
249 | (void) closedir(system_module_dir); | |
250 | } | |
251 | ||
252 | /* load_core_modules() | |
253 | * | |
254 | * input - | |
255 | * output - | |
256 | * side effects - core modules are loaded, if any fail, kill ircd | |
257 | */ | |
258 | void | |
259 | load_core_modules(int warn) | |
260 | { | |
d74fa5b5 | 261 | char module_name[PATH_MAX]; |
212380e3 AC |
262 | int i; |
263 | ||
264 | ||
265 | for (i = 0; core_module_table[i]; i++) | |
266 | { | |
5203cba5 | 267 | snprintf(module_name, sizeof(module_name), "%s/%s%s", MODPATH, |
2a19fc3f | 268 | core_module_table[i], ".la"); |
212380e3 AC |
269 | |
270 | if(load_a_module(module_name, warn, 1) == -1) | |
271 | { | |
272 | ilog(L_MAIN, | |
273 | "Error loading core module %s%s: terminating ircd", | |
2a19fc3f | 274 | core_module_table[i], ".la"); |
212380e3 AC |
275 | exit(0); |
276 | } | |
277 | } | |
278 | } | |
279 | ||
280 | /* load_one_module() | |
281 | * | |
282 | * input - | |
283 | * output - | |
284 | * side effects - | |
285 | */ | |
286 | int | |
287 | load_one_module(const char *path, int coremodule) | |
288 | { | |
d74fa5b5 | 289 | char modpath[PATH_MAX]; |
330fc5c1 | 290 | rb_dlink_node *pathst; |
26c6ac3d | 291 | const char *mpath; |
212380e3 AC |
292 | |
293 | struct stat statbuf; | |
294 | ||
295 | if (server_state_foreground == 1) | |
55abcbb2 | 296 | inotice("loading module %s ...", path); |
212380e3 | 297 | |
5cefa1d6 | 298 | RB_DLINK_FOREACH(pathst, mod_paths.head) |
212380e3 AC |
299 | { |
300 | mpath = pathst->data; | |
301 | ||
5203cba5 | 302 | snprintf(modpath, sizeof(modpath), "%s/%s", mpath, path); |
212380e3 AC |
303 | if((strstr(modpath, "../") == NULL) && (strstr(modpath, "/..") == NULL)) |
304 | { | |
305 | if(stat(modpath, &statbuf) == 0) | |
306 | { | |
307 | if(S_ISREG(statbuf.st_mode)) | |
308 | { | |
309 | /* Regular files only please */ | |
310 | if(coremodule) | |
311 | return load_a_module(modpath, 1, 1); | |
312 | else | |
313 | return load_a_module(modpath, 1, 0); | |
314 | } | |
315 | } | |
316 | ||
317 | } | |
318 | } | |
319 | ||
320 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Cannot locate module %s", path); | |
321 | return -1; | |
322 | } | |
323 | ||
324 | ||
325 | /* load a module .. */ | |
326 | static int | |
4a84a763 | 327 | mo_modload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
212380e3 | 328 | { |
212380e3 AC |
329 | if(!IsOperAdmin(source_p)) |
330 | { | |
331 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
332 | me.name, source_p->name, "admin"); | |
333 | return 0; | |
334 | } | |
335 | ||
15feac53 AC |
336 | if(parc > 2) |
337 | { | |
338 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
339 | "ENCAP %s MODLOAD %s", parv[2], parv[1]); | |
340 | if (match(parv[2], me.name) == 0) | |
341 | return 0; | |
342 | } | |
343 | ||
344 | return do_modload(source_p, parv[1]); | |
345 | } | |
346 | ||
347 | static int | |
4a84a763 | 348 | me_modload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
15feac53 AC |
349 | { |
350 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
351 | { | |
352 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
353 | "to load modules on this server."); | |
354 | return 0; | |
355 | } | |
356 | ||
357 | return do_modload(source_p, parv[1]); | |
358 | } | |
359 | ||
360 | static int | |
361 | do_modload(struct Client *source_p, const char *module) | |
362 | { | |
363 | char *m_bn = rb_basename(module); | |
212380e3 AC |
364 | |
365 | if(findmodule_byname(m_bn) != -1) | |
366 | { | |
5366977b | 367 | sendto_one_notice(source_p, ":Module %s is already loaded", m_bn); |
637c4932 | 368 | rb_free(m_bn); |
212380e3 AC |
369 | return 0; |
370 | } | |
371 | ||
15feac53 | 372 | load_one_module(module, 0); |
212380e3 | 373 | |
637c4932 | 374 | rb_free(m_bn); |
212380e3 AC |
375 | |
376 | return 0; | |
377 | } | |
378 | ||
379 | ||
380 | /* unload a module .. */ | |
381 | static int | |
4a84a763 | 382 | mo_modunload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
212380e3 | 383 | { |
212380e3 AC |
384 | if(!IsOperAdmin(source_p)) |
385 | { | |
386 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
387 | me.name, source_p->name, "admin"); | |
388 | return 0; | |
389 | } | |
390 | ||
15feac53 AC |
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 0; | |
397 | } | |
398 | ||
399 | return do_modunload(source_p, parv[1]); | |
400 | } | |
401 | ||
402 | static int | |
4a84a763 | 403 | me_modunload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
15feac53 AC |
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 0; | |
410 | } | |
411 | ||
412 | return do_modunload(source_p, parv[1]); | |
413 | } | |
414 | ||
415 | static int | |
416 | do_modunload(struct Client *source_p, const char *module) | |
417 | { | |
418 | int modindex; | |
419 | char *m_bn = rb_basename(module); | |
212380e3 AC |
420 | |
421 | if((modindex = findmodule_byname(m_bn)) == -1) | |
422 | { | |
5366977b | 423 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
637c4932 | 424 | rb_free(m_bn); |
212380e3 AC |
425 | return 0; |
426 | } | |
427 | ||
428 | if(modlist[modindex]->core == 1) | |
429 | { | |
5366977b | 430 | sendto_one_notice(source_p, ":Module %s is a core module and may not be unloaded", m_bn); |
637c4932 | 431 | rb_free(m_bn); |
212380e3 AC |
432 | return 0; |
433 | } | |
434 | ||
435 | if(unload_one_module(m_bn, 1) == -1) | |
436 | { | |
5366977b | 437 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
212380e3 | 438 | } |
5366977b | 439 | |
637c4932 | 440 | rb_free(m_bn); |
212380e3 AC |
441 | return 0; |
442 | } | |
443 | ||
444 | /* unload and load in one! */ | |
445 | static int | |
4a84a763 | 446 | mo_modreload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
212380e3 | 447 | { |
212380e3 AC |
448 | if(!IsOperAdmin(source_p)) |
449 | { | |
450 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
451 | me.name, source_p->name, "admin"); | |
452 | return 0; | |
453 | } | |
454 | ||
15feac53 AC |
455 | if(parc > 2) |
456 | { | |
457 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
458 | "ENCAP %s MODRELOAD %s", parv[2], parv[1]); | |
459 | if (match(parv[2], me.name) == 0) | |
460 | return 0; | |
461 | } | |
462 | ||
463 | return do_modreload(source_p, parv[1]); | |
464 | } | |
465 | ||
466 | static int | |
4a84a763 | 467 | me_modreload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
15feac53 AC |
468 | { |
469 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
470 | { | |
471 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
472 | "to load modules on this server."); | |
473 | return 0; | |
474 | } | |
475 | ||
476 | return do_modreload(source_p, parv[1]); | |
477 | } | |
478 | ||
479 | static int | |
480 | do_modreload(struct Client *source_p, const char *module) | |
481 | { | |
482 | int modindex; | |
483 | int check_core; | |
484 | char *m_bn = rb_basename(module); | |
212380e3 AC |
485 | |
486 | if((modindex = findmodule_byname(m_bn)) == -1) | |
487 | { | |
5366977b | 488 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
637c4932 | 489 | rb_free(m_bn); |
212380e3 AC |
490 | return 0; |
491 | } | |
492 | ||
493 | check_core = modlist[modindex]->core; | |
494 | ||
495 | if(unload_one_module(m_bn, 1) == -1) | |
496 | { | |
5366977b | 497 | sendto_one_notice(source_p, ":Module %s is not loaded", m_bn); |
637c4932 | 498 | rb_free(m_bn); |
212380e3 AC |
499 | return 0; |
500 | } | |
501 | ||
7d778d51 | 502 | if((load_one_module(m_bn, check_core) == -1) && check_core) |
212380e3 | 503 | { |
15feac53 | 504 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
7d778d51 AC |
505 | "Error reloading core module: %s: terminating ircd", m_bn); |
506 | ilog(L_MAIN, "Error loading core module %s: terminating ircd", m_bn); | |
212380e3 AC |
507 | exit(0); |
508 | } | |
509 | ||
637c4932 | 510 | rb_free(m_bn); |
212380e3 AC |
511 | return 0; |
512 | } | |
513 | ||
514 | /* list modules .. */ | |
515 | static int | |
4a84a763 | 516 | mo_modlist(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
212380e3 | 517 | { |
212380e3 AC |
518 | if(!IsOperAdmin(source_p)) |
519 | { | |
520 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
521 | me.name, source_p->name, "admin"); | |
522 | return 0; | |
523 | } | |
524 | ||
15feac53 AC |
525 | if(parc > 2) |
526 | { | |
527 | sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS, | |
528 | "ENCAP %s MODLIST %s", parv[2], parv[1]); | |
529 | if (match(parv[2], me.name) == 0) | |
530 | return 0; | |
531 | } | |
532 | ||
533 | return do_modlist(source_p, parc > 1 ? parv[1] : 0); | |
534 | } | |
535 | ||
536 | static int | |
4a84a763 | 537 | me_modlist(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
15feac53 AC |
538 | { |
539 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
540 | { | |
541 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
542 | "to load modules on this server."); | |
543 | return 0; | |
544 | } | |
545 | ||
546 | return do_modlist(source_p, parv[1]); | |
547 | } | |
548 | ||
549 | static int | |
550 | do_modlist(struct Client *source_p, const char *pattern) | |
551 | { | |
552 | int i; | |
553 | ||
212380e3 AC |
554 | for (i = 0; i < num_mods; i++) |
555 | { | |
15feac53 | 556 | if(pattern) |
212380e3 | 557 | { |
15feac53 | 558 | if(match(pattern, modlist[i]->name)) |
212380e3 AC |
559 | { |
560 | sendto_one(source_p, form_str(RPL_MODLIST), | |
561 | me.name, source_p->name, | |
562 | modlist[i]->name, | |
a9f12814 | 563 | (unsigned long)(uintptr_t)modlist[i]->address, |
212380e3 AC |
564 | modlist[i]->version, modlist[i]->core ? "(core)" : ""); |
565 | } | |
566 | } | |
567 | else | |
568 | { | |
569 | sendto_one(source_p, form_str(RPL_MODLIST), | |
570 | me.name, source_p->name, modlist[i]->name, | |
15feac53 | 571 | (unsigned long)(uintptr_t)modlist[i]->address, modlist[i]->version, |
212380e3 AC |
572 | modlist[i]->core ? "(core)" : ""); |
573 | } | |
574 | } | |
575 | ||
576 | sendto_one(source_p, form_str(RPL_ENDOFMODLIST), me.name, source_p->name); | |
577 | return 0; | |
578 | } | |
579 | ||
580 | /* unload and reload all modules */ | |
581 | static int | |
4a84a763 | 582 | mo_modrestart(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
212380e3 | 583 | { |
212380e3 AC |
584 | if(!IsOperAdmin(source_p)) |
585 | { | |
586 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
587 | me.name, source_p->name, "admin"); | |
588 | return 0; | |
589 | } | |
590 | ||
15feac53 AC |
591 | if(parc > 1) |
592 | { | |
593 | sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS, | |
594 | "ENCAP %s MODRESTART", parv[1]); | |
595 | if (match(parv[1], me.name) == 0) | |
596 | return 0; | |
597 | } | |
598 | ||
599 | return do_modrestart(source_p); | |
600 | } | |
601 | ||
602 | static int | |
4a84a763 | 603 | me_modrestart(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) |
15feac53 AC |
604 | { |
605 | if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE)) | |
606 | { | |
607 | sendto_one_notice(source_p, ":*** You do not have an appropriate shared block " | |
608 | "to load modules on this server."); | |
609 | return 0; | |
610 | } | |
611 | ||
612 | return do_modrestart(source_p); | |
613 | } | |
614 | ||
615 | static int | |
616 | do_modrestart(struct Client *source_p) | |
617 | { | |
618 | int modnum; | |
619 | ||
5366977b | 620 | sendto_one_notice(source_p, ":Reloading all modules"); |
212380e3 AC |
621 | |
622 | modnum = num_mods; | |
623 | while (num_mods) | |
624 | unload_one_module(modlist[0]->name, 0); | |
625 | ||
626 | load_all_modules(0); | |
627 | load_core_modules(0); | |
628 | rehash(0); | |
629 | ||
15feac53 | 630 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 AC |
631 | "Module Restart: %d modules unloaded, %d modules loaded", |
632 | modnum, num_mods); | |
633 | ilog(L_MAIN, "Module Restart: %d modules unloaded, %d modules loaded", modnum, num_mods); | |
634 | return 0; | |
635 | } | |
636 | ||
637 | ||
212380e3 AC |
638 | static void increase_modlist(void); |
639 | ||
640 | #define MODS_INCREMENT 10 | |
641 | ||
642 | static char unknown_ver[] = "<unknown>"; | |
643 | ||
212380e3 AC |
644 | /* unload_one_module() |
645 | * | |
646 | * inputs - name of module to unload | |
647 | * - 1 to say modules unloaded, 0 to not | |
648 | * output - 0 if successful, -1 if error | |
649 | * side effects - module is unloaded | |
650 | */ | |
651 | int | |
652 | unload_one_module(const char *name, int warn) | |
653 | { | |
654 | int modindex; | |
655 | ||
656 | if((modindex = findmodule_byname(name)) == -1) | |
657 | return -1; | |
658 | ||
659 | /* | |
660 | ** XXX - The type system in C does not allow direct conversion between | |
661 | ** data and function pointers, but as it happens, most C compilers will | |
55abcbb2 KB |
662 | ** safely do this, however it is a theoretical overlow to cast as we |
663 | ** must do here. I have library functions to take care of this, but | |
664 | ** despite being more "correct" for the C language, this is more | |
212380e3 AC |
665 | ** practical. Removing the abuse of the ability to cast ANY pointer |
666 | ** to and from an integer value here will break some compilers. | |
667 | ** -jmallett | |
668 | */ | |
669 | /* Left the comment in but the code isn't here any more -larne */ | |
670 | switch (modlist[modindex]->mapi_version) | |
671 | { | |
672 | case 1: | |
673 | { | |
674 | struct mapi_mheader_av1 *mheader = modlist[modindex]->mapi_header; | |
675 | if(mheader->mapi_command_list) | |
676 | { | |
677 | struct Message **m; | |
678 | for (m = mheader->mapi_command_list; *m; ++m) | |
679 | mod_del_cmd(*m); | |
680 | } | |
681 | ||
682 | /* hook events are never removed, we simply lose the | |
683 | * ability to call them --fl | |
684 | */ | |
685 | if(mheader->mapi_hfn_list) | |
686 | { | |
687 | mapi_hfn_list_av1 *m; | |
688 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
689 | remove_hook(m->hapi_name, m->fn); | |
690 | } | |
691 | ||
692 | if(mheader->mapi_unregister) | |
693 | mheader->mapi_unregister(); | |
694 | break; | |
695 | } | |
696 | default: | |
697 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
698 | "Unknown/unsupported MAPI version %d when unloading %s!", | |
699 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
700 | ilog(L_MAIN, "Unknown/unsupported MAPI version %d when unloading %s!", | |
701 | modlist[modindex]->mapi_version, modlist[modindex]->name); | |
702 | break; | |
703 | } | |
704 | ||
f272e7ab | 705 | lt_dlclose(modlist[modindex]->address); |
212380e3 | 706 | |
637c4932 | 707 | rb_free(modlist[modindex]->name); |
55d5f797 | 708 | rb_free(modlist[modindex]); |
f54e1a8f | 709 | memmove(&modlist[modindex], &modlist[modindex + 1], |
1e170010 | 710 | sizeof(struct module *) * ((num_mods - 1) - modindex)); |
212380e3 AC |
711 | |
712 | if(num_mods != 0) | |
713 | num_mods--; | |
714 | ||
715 | if(warn == 1) | |
716 | { | |
717 | ilog(L_MAIN, "Module %s unloaded", name); | |
718 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Module %s unloaded", name); | |
719 | } | |
720 | ||
721 | return 0; | |
722 | } | |
723 | ||
724 | ||
725 | /* | |
726 | * load_a_module() | |
727 | * | |
728 | * inputs - path name of module, int to notice, int of core | |
729 | * output - -1 if error 0 if success | |
730 | * side effects - loads a module if successful | |
731 | */ | |
732 | int | |
733 | load_a_module(const char *path, int warn, int core) | |
734 | { | |
f272e7ab | 735 | lt_dlhandle tmpptr; |
212380e3 AC |
736 | char *mod_basename; |
737 | const char *ver; | |
738 | ||
739 | int *mapi_version; | |
740 | ||
b7a689d1 | 741 | mod_basename = rb_basename(path); |
212380e3 | 742 | |
d76258f5 | 743 | tmpptr = lt_dlopen(path); |
212380e3 AC |
744 | |
745 | if(tmpptr == NULL) | |
746 | { | |
f272e7ab | 747 | const char *err = lt_dlerror(); |
212380e3 AC |
748 | |
749 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
750 | "Error loading module %s: %s", mod_basename, err); | |
751 | ilog(L_MAIN, "Error loading module %s: %s", mod_basename, err); | |
637c4932 | 752 | rb_free(mod_basename); |
212380e3 AC |
753 | return -1; |
754 | } | |
755 | ||
756 | ||
757 | /* | |
758 | * _mheader is actually a struct mapi_mheader_*, but mapi_version | |
759 | * is always the first member of this structure, so we treate it | |
760 | * as a single int in order to determine the API version. | |
761 | * -larne. | |
762 | */ | |
f272e7ab | 763 | mapi_version = (int *) (uintptr_t) lt_dlsym(tmpptr, "_mheader"); |
212380e3 | 764 | if((mapi_version == NULL |
f272e7ab | 765 | && (mapi_version = (int *) (uintptr_t) lt_dlsym(tmpptr, "__mheader")) == NULL) |
212380e3 AC |
766 | || MAPI_MAGIC(*mapi_version) != MAPI_MAGIC_HDR) |
767 | { | |
768 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
769 | "Data format error: module %s has no MAPI header.", | |
770 | mod_basename); | |
771 | ilog(L_MAIN, "Data format error: module %s has no MAPI header.", mod_basename); | |
f272e7ab | 772 | (void) lt_dlclose(tmpptr); |
637c4932 | 773 | rb_free(mod_basename); |
212380e3 AC |
774 | return -1; |
775 | } | |
776 | ||
777 | switch (MAPI_VERSION(*mapi_version)) | |
778 | { | |
779 | case 1: | |
780 | { | |
29c92cf9 | 781 | struct mapi_mheader_av1 *mheader = (struct mapi_mheader_av1 *)(void *)mapi_version; /* see above */ |
212380e3 AC |
782 | if(mheader->mapi_register && (mheader->mapi_register() == -1)) |
783 | { | |
784 | ilog(L_MAIN, "Module %s indicated failure during load.", | |
785 | mod_basename); | |
786 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
787 | "Module %s indicated failure during load.", | |
788 | mod_basename); | |
f272e7ab | 789 | lt_dlclose(tmpptr); |
637c4932 | 790 | rb_free(mod_basename); |
212380e3 AC |
791 | return -1; |
792 | } | |
793 | if(mheader->mapi_command_list) | |
794 | { | |
795 | struct Message **m; | |
796 | for (m = mheader->mapi_command_list; *m; ++m) | |
797 | mod_add_cmd(*m); | |
798 | } | |
799 | ||
800 | if(mheader->mapi_hook_list) | |
801 | { | |
802 | mapi_hlist_av1 *m; | |
803 | for (m = mheader->mapi_hook_list; m->hapi_name; ++m) | |
804 | *m->hapi_id = register_hook(m->hapi_name); | |
805 | } | |
806 | ||
807 | if(mheader->mapi_hfn_list) | |
808 | { | |
809 | mapi_hfn_list_av1 *m; | |
810 | for (m = mheader->mapi_hfn_list; m->hapi_name; ++m) | |
811 | add_hook(m->hapi_name, m->fn); | |
812 | } | |
813 | ||
814 | ver = mheader->mapi_module_version; | |
815 | break; | |
816 | } | |
817 | ||
818 | default: | |
819 | ilog(L_MAIN, "Module %s has unknown/unsupported MAPI version %d.", | |
820 | mod_basename, MAPI_VERSION(*mapi_version)); | |
821 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
822 | "Module %s has unknown/unsupported MAPI version %d.", | |
823 | mod_basename, *mapi_version); | |
f272e7ab | 824 | lt_dlclose(tmpptr); |
637c4932 | 825 | rb_free(mod_basename); |
212380e3 AC |
826 | return -1; |
827 | } | |
828 | ||
829 | if(ver == NULL) | |
830 | ver = unknown_ver; | |
831 | ||
832 | increase_modlist(); | |
833 | ||
eddc2ab6 | 834 | modlist[num_mods] = rb_malloc(sizeof(struct module)); |
212380e3 AC |
835 | modlist[num_mods]->address = tmpptr; |
836 | modlist[num_mods]->version = ver; | |
837 | modlist[num_mods]->core = core; | |
47a03750 | 838 | modlist[num_mods]->name = rb_strdup(mod_basename); |
212380e3 AC |
839 | modlist[num_mods]->mapi_header = mapi_version; |
840 | modlist[num_mods]->mapi_version = MAPI_VERSION(*mapi_version); | |
841 | num_mods++; | |
842 | ||
843 | if(warn == 1) | |
844 | { | |
845 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
846 | "Module %s [version: %s; MAPI version: %d] loaded at 0x%lx", | |
847 | mod_basename, ver, MAPI_VERSION(*mapi_version), | |
848 | (unsigned long) tmpptr); | |
849 | ilog(L_MAIN, "Module %s [version: %s; MAPI version: %d] loaded at 0x%lx", | |
850 | mod_basename, ver, MAPI_VERSION(*mapi_version), (unsigned long) tmpptr); | |
851 | } | |
637c4932 | 852 | rb_free(mod_basename); |
212380e3 AC |
853 | return 0; |
854 | } | |
855 | ||
856 | /* | |
857 | * increase_modlist | |
858 | * | |
859 | * inputs - NONE | |
860 | * output - NONE | |
861 | * side effects - expand the size of modlist if necessary | |
862 | */ | |
863 | static void | |
864 | increase_modlist(void) | |
865 | { | |
866 | struct module **new_modlist = NULL; | |
867 | ||
868 | if((num_mods + 1) < max_mods) | |
869 | return; | |
870 | ||
1e170010 | 871 | new_modlist = (struct module **) rb_malloc(sizeof(struct module *) * |
212380e3 | 872 | (max_mods + MODS_INCREMENT)); |
1e170010 | 873 | memcpy((void *) new_modlist, (void *) modlist, sizeof(struct module *) * num_mods); |
212380e3 | 874 | |
637c4932 | 875 | rb_free(modlist); |
212380e3 AC |
876 | modlist = new_modlist; |
877 | max_mods += MODS_INCREMENT; | |
878 | } |