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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 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is restarting ssld", | |
93 | get_oper_name(source_p)); | |
94 | ||
95 | restart_ssld(); | |
96 | } | |
97 | ||
98 | static void | |
99 | rehash_motd(struct Client *source_p) | |
100 | { | |
101 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
102 | "%s is forcing re-reading of MOTD file", | |
103 | get_oper_name(source_p)); | |
104 | if (!MyConnect(source_p)) | |
105 | remote_rehash_oper_p = source_p; | |
106 | ||
107 | cache_user_motd(); | |
108 | } | |
109 | ||
110 | static void | |
111 | rehash_omotd(struct Client *source_p) | |
112 | { | |
113 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
114 | "%s is forcing re-reading of OPER MOTD file", | |
115 | get_oper_name(source_p)); | |
116 | if (!MyConnect(source_p)) | |
117 | remote_rehash_oper_p = source_p; | |
118 | ||
119 | free_cachefile(oper_motd); | |
120 | oper_motd = cache_file(ircd_paths[IRCD_PATH_IRCD_OMOTD], "opers.motd", 0); | |
121 | } | |
122 | ||
123 | static void | |
124 | rehash_tklines(struct Client *source_p) | |
125 | { | |
126 | struct ConfItem *aconf; | |
127 | rb_dlink_node *ptr, *next_ptr; | |
128 | int i; | |
129 | ||
130 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp klines", | |
131 | get_oper_name(source_p)); | |
132 | if (!MyConnect(source_p)) | |
133 | remote_rehash_oper_p = source_p; | |
134 | ||
135 | for(i = 0; i < LAST_TEMP_TYPE; i++) | |
136 | { | |
137 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, temp_klines[i].head) | |
138 | { | |
139 | aconf = ptr->data; | |
140 | ||
141 | delete_one_address_conf(aconf->host, aconf); | |
142 | rb_dlinkDestroy(ptr, &temp_klines[i]); | |
143 | } | |
144 | } | |
145 | } | |
146 | ||
147 | static void | |
148 | rehash_tdlines(struct Client *source_p) | |
149 | { | |
150 | struct ConfItem *aconf; | |
151 | rb_dlink_node *ptr, *next_ptr; | |
152 | int i; | |
153 | ||
154 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp dlines", | |
155 | get_oper_name(source_p)); | |
156 | if (!MyConnect(source_p)) | |
157 | remote_rehash_oper_p = source_p; | |
158 | ||
159 | for(i = 0; i < LAST_TEMP_TYPE; i++) | |
160 | { | |
161 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, temp_dlines[i].head) | |
162 | { | |
163 | aconf = ptr->data; | |
164 | ||
165 | delete_one_address_conf(aconf->host, aconf); | |
166 | rb_dlinkDestroy(ptr, &temp_dlines[i]); | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | static void | |
172 | rehash_txlines(struct Client *source_p) | |
173 | { | |
174 | struct ConfItem *aconf; | |
175 | rb_dlink_node *ptr; | |
176 | rb_dlink_node *next_ptr; | |
177 | ||
178 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp xlines", | |
179 | get_oper_name(source_p)); | |
180 | if (!MyConnect(source_p)) | |
181 | remote_rehash_oper_p = source_p; | |
182 | ||
183 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head) | |
184 | { | |
185 | aconf = ptr->data; | |
186 | ||
187 | if(!aconf->hold || aconf->lifetime) | |
188 | continue; | |
189 | ||
190 | free_conf(aconf); | |
191 | rb_dlinkDestroy(ptr, &xline_conf_list); | |
192 | } | |
193 | } | |
194 | ||
195 | static void | |
196 | rehash_tresvs(struct Client *source_p) | |
197 | { | |
198 | struct ConfItem *aconf; | |
199 | rb_radixtree_iteration_state iter; | |
200 | rb_dlink_node *ptr; | |
201 | rb_dlink_node *next_ptr; | |
202 | ||
203 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp resvs", | |
204 | get_oper_name(source_p)); | |
205 | if (!MyConnect(source_p)) | |
206 | remote_rehash_oper_p = source_p; | |
207 | ||
208 | RB_RADIXTREE_FOREACH(aconf, &iter, resv_tree) | |
209 | { | |
210 | if(!aconf->hold || aconf->lifetime) | |
211 | continue; | |
212 | ||
213 | rb_radixtree_delete(resv_tree, aconf->host); | |
214 | free_conf(aconf); | |
215 | } | |
216 | ||
217 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head) | |
218 | { | |
219 | aconf = ptr->data; | |
220 | ||
221 | if(!aconf->hold || aconf->lifetime) | |
222 | continue; | |
223 | ||
224 | free_conf(aconf); | |
225 | rb_dlinkDestroy(ptr, &resv_conf_list); | |
226 | } | |
227 | } | |
228 | ||
229 | static void | |
230 | rehash_rejectcache(struct Client *source_p) | |
231 | { | |
232 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing reject cache", | |
233 | get_oper_name(source_p)); | |
234 | if (!MyConnect(source_p)) | |
235 | remote_rehash_oper_p = source_p; | |
236 | flush_reject(); | |
237 | ||
238 | } | |
239 | ||
240 | static void | |
241 | rehash_throttles(struct Client *source_p) | |
242 | { | |
243 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing throttles", | |
244 | get_oper_name(source_p)); | |
245 | if (!MyConnect(source_p)) | |
246 | remote_rehash_oper_p = source_p; | |
247 | flush_throttle(); | |
248 | ||
249 | } | |
250 | ||
251 | static void | |
252 | rehash_help(struct Client *source_p) | |
253 | { | |
254 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
255 | "%s is forcing re-reading of HELP files", | |
256 | get_oper_name(source_p)); | |
257 | if (!MyConnect(source_p)) | |
258 | remote_rehash_oper_p = source_p; | |
259 | load_help(); | |
260 | } | |
261 | ||
262 | static void | |
263 | rehash_nickdelay(struct Client *source_p) | |
264 | { | |
265 | struct nd_entry *nd; | |
266 | rb_dlink_node *ptr; | |
267 | rb_dlink_node *safe_ptr; | |
268 | ||
269 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
270 | "%s is clearing the nick delay table", | |
271 | get_oper_name(source_p)); | |
272 | if (!MyConnect(source_p)) | |
273 | remote_rehash_oper_p = source_p; | |
274 | ||
275 | RB_DLINK_FOREACH_SAFE(ptr, safe_ptr, nd_list.head) | |
276 | { | |
277 | nd = ptr->data; | |
278 | ||
279 | free_nd_entry(nd); | |
280 | } | |
281 | } | |
282 | ||
283 | /* *INDENT-OFF* */ | |
284 | static struct hash_commands rehash_commands[] = | |
285 | { | |
286 | {"BANS", rehash_bans_loc }, | |
287 | {"DNS", rehash_dns }, | |
288 | {"SSLD", rehash_ssld }, | |
289 | {"MOTD", rehash_motd }, | |
290 | {"OMOTD", rehash_omotd }, | |
291 | {"TKLINES", rehash_tklines }, | |
292 | {"TDLINES", rehash_tdlines }, | |
293 | {"TXLINES", rehash_txlines }, | |
294 | {"TRESVS", rehash_tresvs }, | |
295 | {"REJECTCACHE", rehash_rejectcache }, | |
296 | {"THROTTLES", rehash_throttles }, | |
297 | {"HELP", rehash_help }, | |
298 | {"NICKDELAY", rehash_nickdelay }, | |
299 | {NULL, NULL } | |
300 | }; | |
301 | /* *INDENT-ON* */ | |
302 | ||
303 | static void | |
304 | do_rehash(struct Client *source_p, const char *type) | |
305 | { | |
306 | if (type != NULL) | |
307 | { | |
308 | int x; | |
309 | char cmdbuf[100]; | |
310 | ||
311 | for (x = 0; rehash_commands[x].cmd != NULL && rehash_commands[x].handler != NULL; | |
312 | x++) | |
313 | { | |
314 | if(irccmp(type, rehash_commands[x].cmd) == 0) | |
315 | { | |
316 | sendto_one(source_p, form_str(RPL_REHASHING), me.name, | |
317 | source_p->name, rehash_commands[x].cmd); | |
318 | ilog(L_MAIN, "REHASH %s From %s[%s]", type, | |
319 | get_oper_name(source_p), source_p->sockhost); | |
320 | rehash_commands[x].handler(source_p); | |
321 | remote_rehash_oper_p = NULL; | |
322 | return; | |
323 | } | |
324 | } | |
325 | ||
326 | /* We are still here..we didn't match */ | |
327 | cmdbuf[0] = '\0'; | |
328 | for (x = 0; rehash_commands[x].cmd != NULL && rehash_commands[x].handler != NULL; | |
329 | x++) | |
330 | { | |
331 | rb_strlcat(cmdbuf, " ", sizeof(cmdbuf)); | |
332 | rb_strlcat(cmdbuf, rehash_commands[x].cmd, sizeof(cmdbuf)); | |
333 | } | |
334 | sendto_one_notice(source_p, ":rehash one of:%s", cmdbuf); | |
335 | } | |
336 | else | |
337 | { | |
338 | sendto_one(source_p, form_str(RPL_REHASHING), me.name, source_p->name, | |
339 | ConfigFileEntry.configfile); | |
340 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
341 | "%s is rehashing server config file", get_oper_name(source_p)); | |
342 | if (!MyConnect(source_p)) | |
343 | remote_rehash_oper_p = source_p; | |
344 | ilog(L_MAIN, "REHASH From %s[%s]", get_oper_name(source_p), | |
345 | source_p->sockhost); | |
346 | rehash(false); | |
347 | remote_rehash_oper_p = NULL; | |
348 | } | |
349 | } | |
350 | ||
351 | /* | |
352 | * mo_rehash - REHASH message handler | |
353 | * | |
354 | * parv[1] = rehash type or destination | |
355 | * parv[2] = destination | |
356 | */ | |
357 | static void | |
358 | mo_rehash(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
359 | { | |
360 | const char *type = NULL, *target_server = NULL; | |
361 | ||
362 | if(!IsOperRehash(source_p)) | |
363 | { | |
364 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
365 | me.name, source_p->name, "rehash"); | |
366 | return; | |
367 | } | |
368 | ||
369 | if (parc > 2) | |
370 | type = parv[1], target_server = parv[2]; | |
371 | else if (parc > 1 && (strchr(parv[1], '.') || strchr(parv[1], '?') || strchr(parv[1], '*'))) | |
372 | type = NULL, target_server = parv[1]; | |
373 | else if (parc > 1) | |
374 | type = parv[1], target_server = NULL; | |
375 | else | |
376 | type = NULL, target_server = NULL; | |
377 | ||
378 | if (target_server != NULL) | |
379 | { | |
380 | if(!IsOperRemoteBan(source_p)) | |
381 | { | |
382 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
383 | me.name, source_p->name, "remoteban"); | |
384 | return; | |
385 | } | |
386 | sendto_match_servs(source_p, target_server, | |
387 | CAP_ENCAP, NOCAPS, | |
388 | "ENCAP %s REHASH %s", | |
389 | target_server, type != NULL ? type : ""); | |
390 | if (match(target_server, me.name) == 0) | |
391 | return; | |
392 | } | |
393 | ||
394 | do_rehash(source_p, type); | |
395 | } | |
396 | ||
397 | static void | |
398 | me_rehash(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
399 | { | |
400 | ||
401 | if (!IsPerson(source_p)) | |
402 | return; | |
403 | ||
404 | if (!find_shared_conf(source_p->username, source_p->host, | |
405 | source_p->servptr->name, SHARED_REHASH)) | |
406 | return; | |
407 | ||
408 | do_rehash(source_p, parc > 1 ? parv[1] : NULL); | |
409 | } |