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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_rehash.c: Re-reads the configuration file. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | */ | |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "client.h" | |
27 | #include "channel.h" | |
28 | #include "match.h" | |
29 | #include "ircd.h" | |
30 | #include "s_serv.h" | |
31 | #include "numeric.h" | |
32 | #include "s_conf.h" | |
33 | #include "s_newconf.h" | |
34 | #include "logger.h" | |
35 | #include "send.h" | |
36 | #include "msg.h" | |
37 | #include "parse.h" | |
38 | #include "modules.h" | |
39 | #include "hostmask.h" | |
40 | #include "reject.h" | |
41 | #include "hash.h" | |
42 | #include "cache.h" | |
43 | #include "rb_radixtree.h" | |
44 | #include "sslproc.h" | |
45 | ||
46 | static const char rehash_desc[] = | |
47 | "Provides the REHASH command to reload configuration and other files"; | |
48 | ||
49 | static void mo_rehash(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
50 | static void me_rehash(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
51 | ||
52 | struct Message rehash_msgtab = { | |
53 | "REHASH", 0, 0, 0, 0, | |
54 | {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_rehash, 0}, {mo_rehash, 0}} | |
55 | }; | |
56 | ||
57 | mapi_clist_av1 rehash_clist[] = { &rehash_msgtab, NULL }; | |
58 | ||
59 | DECLARE_MODULE_AV2(rehash, NULL, NULL, rehash_clist, NULL, NULL, NULL, NULL, rehash_desc); | |
60 | ||
61 | struct hash_commands | |
62 | { | |
63 | const char *cmd; | |
64 | void (*handler) (struct Client * source_p); | |
65 | }; | |
66 | ||
67 | static void | |
68 | rehash_bans_loc(struct Client *source_p) | |
69 | { | |
70 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is rehashing bans", | |
71 | get_oper_name(source_p)); | |
72 | if (!MyConnect(source_p)) | |
73 | remote_rehash_oper_p = source_p; | |
74 | ||
75 | rehash_bans(); | |
76 | } | |
77 | ||
78 | static void | |
79 | rehash_dns(struct Client *source_p) | |
80 | { | |
81 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is rehashing DNS", | |
82 | get_oper_name(source_p)); | |
83 | if (!MyConnect(source_p)) | |
84 | remote_rehash_oper_p = source_p; | |
85 | ||
86 | reload_nameservers(); | |
87 | } | |
88 | ||
89 | static void | |
90 | rehash_ssld(struct Client *source_p) | |
91 | { | |
92 | if (!IsOperAdmin(source_p)) | |
93 | { | |
94 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
95 | me.name, source_p->name, "admin"); | |
96 | return; | |
97 | } | |
98 | ||
99 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is restarting ssld", | |
100 | get_oper_name(source_p)); | |
101 | ||
102 | restart_ssld(); | |
103 | } | |
104 | ||
105 | static void | |
106 | rehash_motd(struct Client *source_p) | |
107 | { | |
108 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
109 | "%s is forcing re-reading of MOTD file", | |
110 | get_oper_name(source_p)); | |
111 | if (!MyConnect(source_p)) | |
112 | remote_rehash_oper_p = source_p; | |
113 | ||
114 | cache_user_motd(); | |
115 | } | |
116 | ||
117 | static void | |
118 | rehash_omotd(struct Client *source_p) | |
119 | { | |
120 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
121 | "%s is forcing re-reading of OPER MOTD file", | |
122 | get_oper_name(source_p)); | |
123 | if (!MyConnect(source_p)) | |
124 | remote_rehash_oper_p = source_p; | |
125 | ||
126 | free_cachefile(oper_motd); | |
127 | oper_motd = cache_file(ircd_paths[IRCD_PATH_IRCD_OMOTD], "opers.motd", 0); | |
128 | } | |
129 | ||
130 | static void | |
131 | rehash_tklines(struct Client *source_p) | |
132 | { | |
133 | struct ConfItem *aconf; | |
134 | rb_dlink_node *ptr, *next_ptr; | |
135 | int i; | |
136 | ||
137 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp klines", | |
138 | get_oper_name(source_p)); | |
139 | if (!MyConnect(source_p)) | |
140 | remote_rehash_oper_p = source_p; | |
141 | ||
142 | for(i = 0; i < LAST_TEMP_TYPE; i++) | |
143 | { | |
144 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, temp_klines[i].head) | |
145 | { | |
146 | aconf = ptr->data; | |
147 | ||
148 | delete_one_address_conf(aconf->host, aconf); | |
149 | rb_dlinkDestroy(ptr, &temp_klines[i]); | |
150 | } | |
151 | } | |
152 | } | |
153 | ||
154 | static void | |
155 | rehash_tdlines(struct Client *source_p) | |
156 | { | |
157 | struct ConfItem *aconf; | |
158 | rb_dlink_node *ptr, *next_ptr; | |
159 | int i; | |
160 | ||
161 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp dlines", | |
162 | get_oper_name(source_p)); | |
163 | if (!MyConnect(source_p)) | |
164 | remote_rehash_oper_p = source_p; | |
165 | ||
166 | for(i = 0; i < LAST_TEMP_TYPE; i++) | |
167 | { | |
168 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, temp_dlines[i].head) | |
169 | { | |
170 | aconf = ptr->data; | |
171 | ||
172 | delete_one_address_conf(aconf->host, aconf); | |
173 | rb_dlinkDestroy(ptr, &temp_dlines[i]); | |
174 | } | |
175 | } | |
176 | } | |
177 | ||
178 | static void | |
179 | rehash_txlines(struct Client *source_p) | |
180 | { | |
181 | struct ConfItem *aconf; | |
182 | rb_dlink_node *ptr; | |
183 | rb_dlink_node *next_ptr; | |
184 | ||
185 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp xlines", | |
186 | get_oper_name(source_p)); | |
187 | if (!MyConnect(source_p)) | |
188 | remote_rehash_oper_p = source_p; | |
189 | ||
190 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head) | |
191 | { | |
192 | aconf = ptr->data; | |
193 | ||
194 | if(!aconf->hold || aconf->lifetime) | |
195 | continue; | |
196 | ||
197 | free_conf(aconf); | |
198 | rb_dlinkDestroy(ptr, &xline_conf_list); | |
199 | } | |
200 | } | |
201 | ||
202 | static void | |
203 | rehash_tresvs(struct Client *source_p) | |
204 | { | |
205 | struct ConfItem *aconf; | |
206 | rb_radixtree_iteration_state iter; | |
207 | rb_dlink_node *ptr; | |
208 | rb_dlink_node *next_ptr; | |
209 | ||
210 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp resvs", | |
211 | get_oper_name(source_p)); | |
212 | if (!MyConnect(source_p)) | |
213 | remote_rehash_oper_p = source_p; | |
214 | ||
215 | RB_RADIXTREE_FOREACH(aconf, &iter, resv_tree) | |
216 | { | |
217 | if(!aconf->hold || aconf->lifetime) | |
218 | continue; | |
219 | ||
220 | rb_radixtree_delete(resv_tree, aconf->host); | |
221 | free_conf(aconf); | |
222 | } | |
223 | ||
224 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head) | |
225 | { | |
226 | aconf = ptr->data; | |
227 | ||
228 | if(!aconf->hold || aconf->lifetime) | |
229 | continue; | |
230 | ||
231 | free_conf(aconf); | |
232 | rb_dlinkDestroy(ptr, &resv_conf_list); | |
233 | } | |
234 | } | |
235 | ||
236 | static void | |
237 | rehash_rejectcache(struct Client *source_p) | |
238 | { | |
239 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing reject cache", | |
240 | get_oper_name(source_p)); | |
241 | if (!MyConnect(source_p)) | |
242 | remote_rehash_oper_p = source_p; | |
243 | flush_reject(); | |
244 | ||
245 | } | |
246 | ||
247 | static void | |
248 | rehash_throttles(struct Client *source_p) | |
249 | { | |
250 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing throttles", | |
251 | get_oper_name(source_p)); | |
252 | if (!MyConnect(source_p)) | |
253 | remote_rehash_oper_p = source_p; | |
254 | flush_throttle(); | |
255 | ||
256 | } | |
257 | ||
258 | static void | |
259 | rehash_help(struct Client *source_p) | |
260 | { | |
261 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
262 | "%s is forcing re-reading of HELP files", | |
263 | get_oper_name(source_p)); | |
264 | if (!MyConnect(source_p)) | |
265 | remote_rehash_oper_p = source_p; | |
266 | load_help(); | |
267 | } | |
268 | ||
269 | static void | |
270 | rehash_nickdelay(struct Client *source_p) | |
271 | { | |
272 | struct nd_entry *nd; | |
273 | rb_dlink_node *ptr; | |
274 | rb_dlink_node *safe_ptr; | |
275 | ||
276 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
277 | "%s is clearing the nick delay table", | |
278 | get_oper_name(source_p)); | |
279 | if (!MyConnect(source_p)) | |
280 | remote_rehash_oper_p = source_p; | |
281 | ||
282 | RB_DLINK_FOREACH_SAFE(ptr, safe_ptr, nd_list.head) | |
283 | { | |
284 | nd = ptr->data; | |
285 | ||
286 | free_nd_entry(nd); | |
287 | } | |
288 | } | |
289 | ||
290 | /* *INDENT-OFF* */ | |
291 | static struct hash_commands rehash_commands[] = | |
292 | { | |
293 | {"BANS", rehash_bans_loc }, | |
294 | {"DNS", rehash_dns }, | |
295 | {"SSLD", rehash_ssld }, | |
296 | {"MOTD", rehash_motd }, | |
297 | {"OMOTD", rehash_omotd }, | |
298 | {"TKLINES", rehash_tklines }, | |
299 | {"TDLINES", rehash_tdlines }, | |
300 | {"TXLINES", rehash_txlines }, | |
301 | {"TRESVS", rehash_tresvs }, | |
302 | {"REJECTCACHE", rehash_rejectcache }, | |
303 | {"THROTTLES", rehash_throttles }, | |
304 | {"HELP", rehash_help }, | |
305 | {"NICKDELAY", rehash_nickdelay }, | |
306 | {NULL, NULL } | |
307 | }; | |
308 | /* *INDENT-ON* */ | |
309 | ||
310 | static void | |
311 | do_rehash(struct Client *source_p, const char *type) | |
312 | { | |
313 | if (type != NULL) | |
314 | { | |
315 | int x; | |
316 | char cmdbuf[100]; | |
317 | ||
318 | for (x = 0; rehash_commands[x].cmd != NULL && rehash_commands[x].handler != NULL; | |
319 | x++) | |
320 | { | |
321 | if(irccmp(type, rehash_commands[x].cmd) == 0) | |
322 | { | |
323 | sendto_one(source_p, form_str(RPL_REHASHING), me.name, | |
324 | source_p->name, rehash_commands[x].cmd); | |
325 | ilog(L_MAIN, "REHASH %s From %s[%s]", type, | |
326 | get_oper_name(source_p), source_p->sockhost); | |
327 | rehash_commands[x].handler(source_p); | |
328 | remote_rehash_oper_p = NULL; | |
329 | return; | |
330 | } | |
331 | } | |
332 | ||
333 | /* We are still here..we didn't match */ | |
334 | cmdbuf[0] = '\0'; | |
335 | for (x = 0; rehash_commands[x].cmd != NULL && rehash_commands[x].handler != NULL; | |
336 | x++) | |
337 | { | |
338 | rb_strlcat(cmdbuf, " ", sizeof(cmdbuf)); | |
339 | rb_strlcat(cmdbuf, rehash_commands[x].cmd, sizeof(cmdbuf)); | |
340 | } | |
341 | sendto_one_notice(source_p, ":rehash one of:%s", cmdbuf); | |
342 | } | |
343 | else | |
344 | { | |
345 | sendto_one(source_p, form_str(RPL_REHASHING), me.name, source_p->name, | |
346 | ConfigFileEntry.configfile); | |
347 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
348 | "%s is rehashing server config file", get_oper_name(source_p)); | |
349 | if (!MyConnect(source_p)) | |
350 | remote_rehash_oper_p = source_p; | |
351 | ilog(L_MAIN, "REHASH From %s[%s]", get_oper_name(source_p), | |
352 | source_p->sockhost); | |
353 | rehash(false); | |
354 | remote_rehash_oper_p = NULL; | |
355 | } | |
356 | } | |
357 | ||
358 | /* | |
359 | * mo_rehash - REHASH message handler | |
360 | * | |
361 | * parv[1] = rehash type or destination | |
362 | * parv[2] = destination | |
363 | */ | |
364 | static void | |
365 | mo_rehash(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
366 | { | |
367 | const char *type = NULL, *target_server = NULL; | |
368 | ||
369 | if(!IsOperRehash(source_p)) | |
370 | { | |
371 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
372 | me.name, source_p->name, "rehash"); | |
373 | return; | |
374 | } | |
375 | ||
376 | if (parc > 2) | |
377 | type = parv[1], target_server = parv[2]; | |
378 | else if (parc > 1 && (strchr(parv[1], '.') || strchr(parv[1], '?') || strchr(parv[1], '*'))) | |
379 | type = NULL, target_server = parv[1]; | |
380 | else if (parc > 1) | |
381 | type = parv[1], target_server = NULL; | |
382 | else | |
383 | type = NULL, target_server = NULL; | |
384 | ||
385 | if (target_server != NULL) | |
386 | { | |
387 | if(!IsOperRemoteBan(source_p)) | |
388 | { | |
389 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
390 | me.name, source_p->name, "remoteban"); | |
391 | return; | |
392 | } | |
393 | sendto_match_servs(source_p, target_server, | |
394 | CAP_ENCAP, NOCAPS, | |
395 | "ENCAP %s REHASH %s", | |
396 | target_server, type != NULL ? type : ""); | |
397 | if (match(target_server, me.name) == 0) | |
398 | return; | |
399 | } | |
400 | ||
401 | do_rehash(source_p, type); | |
402 | } | |
403 | ||
404 | static void | |
405 | me_rehash(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
406 | { | |
407 | ||
408 | if (!IsPerson(source_p)) | |
409 | return; | |
410 | ||
411 | if (!find_shared_conf(source_p->username, source_p->host, | |
412 | source_p->servptr->name, SHARED_REHASH)) | |
413 | return; | |
414 | ||
415 | do_rehash(source_p, parc > 1 ? parv[1] : NULL); | |
416 | } |