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Commit | Line | Data |
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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_message.c: Sends a (PRIVMSG|NOTICE) message to a user or channel. | |
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" | |
26 | #include "client.h" | |
27 | #include "ircd.h" | |
28 | #include "numeric.h" | |
212380e3 AC |
29 | #include "s_conf.h" |
30 | #include "s_serv.h" | |
31 | #include "msg.h" | |
32 | #include "parse.h" | |
33 | #include "modules.h" | |
34 | #include "channel.h" | |
4562c604 | 35 | #include "match.h" |
212380e3 AC |
36 | #include "hash.h" |
37 | #include "class.h" | |
38 | #include "msg.h" | |
39 | #include "packet.h" | |
40 | #include "send.h" | |
212380e3 | 41 | #include "s_newconf.h" |
43f8445d | 42 | #include "s_stats.h" |
4f2685f3 | 43 | #include "tgchange.h" |
ab428518 | 44 | #include "inline/stringops.h" |
212380e3 | 45 | |
eeabf33a EM |
46 | static const char message_desc[] = |
47 | "Provides the PRIVMSG and NOTICE commands to send messages to users and channels"; | |
48 | ||
3c7d6fcc EM |
49 | static void m_message(enum message_type, struct MsgBuf *, struct Client *, struct Client *, int, const char **); |
50 | static void m_privmsg(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
51 | static void m_notice(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
7fd01f9f EK |
52 | static void m_echo(struct MsgBuf *, struct Client *, struct Client *, int, const char **); |
53 | ||
54 | static void echo_msg(struct Client *, struct Client *, enum message_type, const char *); | |
212380e3 AC |
55 | |
56 | static void expire_tgchange(void *unused); | |
0e7cb7e6 | 57 | static struct ev_entry *expire_tgchange_event; |
212380e3 AC |
58 | |
59 | static int | |
60 | modinit(void) | |
61 | { | |
0e7cb7e6 | 62 | expire_tgchange_event = rb_event_addish("expire_tgchange", expire_tgchange, NULL, 300); |
212380e3 AC |
63 | expire_tgchange(NULL); |
64 | return 0; | |
65 | } | |
66 | ||
67 | static void | |
68 | moddeinit(void) | |
69 | { | |
0e7cb7e6 | 70 | rb_event_delete(expire_tgchange_event); |
212380e3 AC |
71 | } |
72 | ||
73 | struct Message privmsg_msgtab = { | |
7baa37a9 | 74 | "PRIVMSG", 0, 0, 0, 0, |
212380e3 AC |
75 | {mg_unreg, {m_privmsg, 0}, {m_privmsg, 0}, mg_ignore, mg_ignore, {m_privmsg, 0}} |
76 | }; | |
77 | struct Message notice_msgtab = { | |
7baa37a9 | 78 | "NOTICE", 0, 0, 0, 0, |
212380e3 AC |
79 | {mg_unreg, {m_notice, 0}, {m_notice, 0}, {m_notice, 0}, mg_ignore, {m_notice, 0}} |
80 | }; | |
7fd01f9f EK |
81 | struct Message echo_msgtab = { |
82 | "ECHO", 0, 0, 0, 0, | |
83 | {mg_unreg, mg_ignore, {m_echo, 3}, mg_ignore, mg_ignore, mg_ignore} | |
84 | }; | |
212380e3 | 85 | |
7fd01f9f | 86 | mapi_clist_av1 message_clist[] = { &privmsg_msgtab, ¬ice_msgtab, &echo_msgtab, NULL }; |
212380e3 | 87 | |
8661d5ae | 88 | DECLARE_MODULE_AV2(message, modinit, moddeinit, message_clist, NULL, NULL, NULL, NULL, message_desc); |
212380e3 AC |
89 | |
90 | struct entity | |
91 | { | |
92 | void *ptr; | |
93 | int type; | |
94 | int flags; | |
95 | }; | |
96 | ||
ca4c2a86 | 97 | static int build_target_list(enum message_type msgtype, |
212380e3 AC |
98 | struct Client *client_p, |
99 | struct Client *source_p, const char *nicks_channels, const char *text); | |
100 | ||
3c7d6fcc | 101 | static bool flood_attack_client(enum message_type msgtype, struct Client *source_p, struct Client *target_p); |
212380e3 | 102 | |
aa9c9ed2 JT |
103 | /* Fifteen seconds should be plenty for a client to reply a ctcp */ |
104 | #define LARGE_CTCP_TIME 15 | |
105 | ||
212380e3 AC |
106 | #define ENTITY_NONE 0 |
107 | #define ENTITY_CHANNEL 1 | |
c4d2d014 JT |
108 | #define ENTITY_CHANNEL_OPMOD 2 |
109 | #define ENTITY_CHANOPS_ON_CHANNEL 3 | |
110 | #define ENTITY_CLIENT 4 | |
212380e3 AC |
111 | |
112 | static struct entity targets[512]; | |
113 | static int ntargets = 0; | |
114 | ||
3c7d6fcc | 115 | static bool duplicate_ptr(void *); |
212380e3 | 116 | |
ca4c2a86 | 117 | static void msg_channel(enum message_type msgtype, |
212380e3 AC |
118 | struct Client *client_p, |
119 | struct Client *source_p, struct Channel *chptr, const char *text); | |
120 | ||
ca4c2a86 | 121 | static void msg_channel_opmod(enum message_type msgtype, |
c4d2d014 JT |
122 | struct Client *client_p, |
123 | struct Client *source_p, struct Channel *chptr, | |
124 | const char *text); | |
125 | ||
ca4c2a86 | 126 | static void msg_channel_flags(enum message_type msgtype, |
212380e3 AC |
127 | struct Client *client_p, |
128 | struct Client *source_p, | |
129 | struct Channel *chptr, int flags, const char *text); | |
130 | ||
ca4c2a86 | 131 | static void msg_client(enum message_type msgtype, |
212380e3 AC |
132 | struct Client *source_p, struct Client *target_p, const char *text); |
133 | ||
ca4c2a86 | 134 | static void handle_special(enum message_type msgtype, |
212380e3 AC |
135 | struct Client *client_p, struct Client *source_p, const char *nick, |
136 | const char *text); | |
137 | ||
138 | /* | |
139 | ** m_privmsg | |
140 | ** | |
141 | ** massive cleanup | |
142 | ** rev argv 6/91 | |
143 | ** | |
144 | ** Another massive cleanup Nov, 2000 | |
145 | ** (I don't think there is a single line left from 6/91. Maybe.) | |
146 | ** m_privmsg and m_notice do basically the same thing. | |
147 | ** in the original 2.8.2 code base, they were the same function | |
148 | ** "m_message.c." When we did the great cleanup in conjuncton with bleep | |
149 | ** of ircu fame, we split m_privmsg.c and m_notice.c. | |
150 | ** I don't see the point of that now. Its harder to maintain, its | |
151 | ** easier to introduce bugs into one version and not the other etc. | |
152 | ** Really, the penalty of an extra function call isn't that big a deal folks. | |
153 | ** -db Nov 13, 2000 | |
154 | ** | |
155 | */ | |
ca4c2a86 AC |
156 | const char *cmdname[MESSAGE_TYPE_COUNT] = { |
157 | [MESSAGE_TYPE_PRIVMSG] = "PRIVMSG", | |
158 | [MESSAGE_TYPE_NOTICE] = "NOTICE", | |
159 | }; | |
212380e3 | 160 | |
3c7d6fcc | 161 | static void |
428ca87b | 162 | m_privmsg(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 | 163 | { |
3c7d6fcc | 164 | m_message(MESSAGE_TYPE_PRIVMSG, msgbuf_p, client_p, source_p, parc, parv); |
212380e3 AC |
165 | } |
166 | ||
3c7d6fcc | 167 | static void |
428ca87b | 168 | m_notice(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 | 169 | { |
3c7d6fcc | 170 | m_message(MESSAGE_TYPE_NOTICE, msgbuf_p, client_p, source_p, parc, parv); |
212380e3 AC |
171 | } |
172 | ||
173 | /* | |
174 | * inputs - flag privmsg or notice | |
212380e3 AC |
175 | * - pointer to client_p |
176 | * - pointer to source_p | |
177 | * - pointer to channel | |
178 | */ | |
3c7d6fcc | 179 | static void |
428ca87b | 180 | m_message(enum message_type msgtype, struct MsgBuf *msgbuf_p, |
212380e3 AC |
181 | struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
182 | { | |
183 | int i; | |
184 | ||
185 | if(parc < 2 || EmptyString(parv[1])) | |
186 | { | |
ca4c2a86 | 187 | if(msgtype != MESSAGE_TYPE_NOTICE) |
212380e3 | 188 | sendto_one(source_p, form_str(ERR_NORECIPIENT), me.name, |
ca4c2a86 | 189 | source_p->name, cmdname[msgtype]); |
3c7d6fcc | 190 | return; |
212380e3 AC |
191 | } |
192 | ||
193 | if(parc < 3 || EmptyString(parv[2])) | |
194 | { | |
ca4c2a86 | 195 | if(msgtype != MESSAGE_TYPE_NOTICE) |
212380e3 | 196 | sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); |
3c7d6fcc | 197 | return; |
212380e3 AC |
198 | } |
199 | ||
200 | /* Finish the flood grace period if theyre not messaging themselves | |
201 | * as some clients (ircN) do this as a "lag check" | |
202 | */ | |
203 | if(MyClient(source_p) && !IsFloodDone(source_p) && irccmp(source_p->name, parv[1])) | |
204 | flood_endgrace(source_p); | |
205 | ||
ca4c2a86 | 206 | if(build_target_list(msgtype, client_p, source_p, parv[1], parv[2]) < 0) |
212380e3 | 207 | { |
3c7d6fcc | 208 | return; |
212380e3 AC |
209 | } |
210 | ||
211 | for(i = 0; i < ntargets; i++) | |
212 | { | |
213 | switch (targets[i].type) | |
214 | { | |
215 | case ENTITY_CHANNEL: | |
ca4c2a86 | 216 | msg_channel(msgtype, client_p, source_p, |
212380e3 AC |
217 | (struct Channel *) targets[i].ptr, parv[2]); |
218 | break; | |
219 | ||
c4d2d014 | 220 | case ENTITY_CHANNEL_OPMOD: |
ca4c2a86 | 221 | msg_channel_opmod(msgtype, client_p, source_p, |
c4d2d014 JT |
222 | (struct Channel *) targets[i].ptr, parv[2]); |
223 | break; | |
224 | ||
212380e3 | 225 | case ENTITY_CHANOPS_ON_CHANNEL: |
ca4c2a86 | 226 | msg_channel_flags(msgtype, client_p, source_p, |
212380e3 AC |
227 | (struct Channel *) targets[i].ptr, |
228 | targets[i].flags, parv[2]); | |
229 | break; | |
230 | ||
231 | case ENTITY_CLIENT: | |
ca4c2a86 | 232 | msg_client(msgtype, source_p, |
212380e3 AC |
233 | (struct Client *) targets[i].ptr, parv[2]); |
234 | break; | |
235 | } | |
236 | } | |
212380e3 AC |
237 | } |
238 | ||
7fd01f9f EK |
239 | static void |
240 | m_echo(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, | |
241 | int parc, const char *parv[]) | |
242 | { | |
243 | struct Client *target_p = find_person(parv[2]); | |
244 | enum message_type msgtype; | |
245 | ||
246 | if (target_p == NULL) | |
247 | return; | |
248 | ||
249 | switch (parv[1][0]) | |
250 | { | |
251 | case 'P': msgtype = MESSAGE_TYPE_PRIVMSG; break; | |
252 | case 'N': msgtype = MESSAGE_TYPE_NOTICE; break; | |
253 | default: return; | |
254 | } | |
255 | ||
256 | echo_msg(source_p, target_p, msgtype, parv[3]); | |
257 | } | |
258 | ||
212380e3 AC |
259 | /* |
260 | * build_target_list | |
261 | * | |
262 | * inputs - pointer to given client_p (server) | |
263 | * - pointer to given source (oper/client etc.) | |
264 | * - pointer to list of nicks/channels | |
265 | * - pointer to table to place results | |
266 | * - pointer to text (only used if source_p is an oper) | |
267 | * output - number of valid entities | |
268 | * side effects - target_table is modified to contain a list of | |
269 | * pointers to channels or clients | |
270 | * if source client is an oper | |
271 | * all the classic old bizzare oper privmsg tricks | |
272 | * are parsed and sent as is, if prefixed with $ | |
273 | * to disambiguate. | |
212380e3 AC |
274 | */ |
275 | ||
276 | static int | |
ca4c2a86 | 277 | build_target_list(enum message_type msgtype, struct Client *client_p, |
212380e3 AC |
278 | struct Client *source_p, const char *nicks_channels, const char *text) |
279 | { | |
280 | int type; | |
281 | char *p, *nick, *target_list; | |
282 | struct Channel *chptr = NULL; | |
283 | struct Client *target_p; | |
284 | ||
285 | target_list = LOCAL_COPY(nicks_channels); /* skip strcpy for non-lazyleafs */ | |
286 | ||
287 | ntargets = 0; | |
288 | ||
4a2651e5 | 289 | for(nick = rb_strtok_r(target_list, ",", &p); nick; nick = rb_strtok_r(NULL, ",", &p)) |
212380e3 AC |
290 | { |
291 | char *with_prefix; | |
292 | /* | |
293 | * channels are privmsg'd a lot more than other clients, moved up | |
294 | * here plain old channel msg? | |
295 | */ | |
296 | ||
297 | if(IsChanPrefix(*nick)) | |
298 | { | |
299 | /* ignore send of local channel to a server (should not happen) */ | |
300 | if(IsServer(client_p) && *nick == '&') | |
301 | continue; | |
302 | ||
303 | if((chptr = find_channel(nick)) != NULL) | |
304 | { | |
305 | if(!duplicate_ptr(chptr)) | |
306 | { | |
307 | if(ntargets >= ConfigFileEntry.max_targets) | |
308 | { | |
309 | sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), | |
310 | me.name, source_p->name, nick); | |
311 | return (1); | |
312 | } | |
313 | targets[ntargets].ptr = (void *) chptr; | |
314 | targets[ntargets++].type = ENTITY_CHANNEL; | |
315 | } | |
316 | } | |
317 | ||
318 | /* non existant channel */ | |
ca4c2a86 | 319 | else if(msgtype != MESSAGE_TYPE_NOTICE) |
212380e3 AC |
320 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, |
321 | form_str(ERR_NOSUCHNICK), nick); | |
322 | ||
323 | continue; | |
324 | } | |
325 | ||
326 | if(MyClient(source_p)) | |
327 | target_p = find_named_person(nick); | |
328 | else | |
329 | target_p = find_person(nick); | |
330 | ||
331 | /* look for a privmsg to another client */ | |
332 | if(target_p) | |
333 | { | |
334 | if(!duplicate_ptr(target_p)) | |
335 | { | |
336 | if(ntargets >= ConfigFileEntry.max_targets) | |
337 | { | |
338 | sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), | |
339 | me.name, source_p->name, nick); | |
340 | return (1); | |
341 | } | |
342 | targets[ntargets].ptr = (void *) target_p; | |
343 | targets[ntargets].type = ENTITY_CLIENT; | |
344 | targets[ntargets++].flags = 0; | |
345 | } | |
346 | continue; | |
347 | } | |
348 | ||
349 | /* @#channel or +#channel message ? */ | |
350 | ||
351 | type = 0; | |
352 | with_prefix = nick; | |
353 | /* allow %+@ if someone wants to do that */ | |
354 | for(;;) | |
355 | { | |
356 | if(*nick == '@') | |
357 | type |= CHFL_CHANOP; | |
358 | else if(*nick == '+') | |
359 | type |= CHFL_CHANOP | CHFL_VOICE; | |
360 | else | |
361 | break; | |
362 | nick++; | |
363 | } | |
364 | ||
365 | if(type != 0) | |
366 | { | |
367 | /* no recipient.. */ | |
368 | if(EmptyString(nick)) | |
369 | { | |
370 | sendto_one(source_p, form_str(ERR_NORECIPIENT), | |
ca4c2a86 | 371 | me.name, source_p->name, cmdname[msgtype]); |
212380e3 AC |
372 | continue; |
373 | } | |
374 | ||
375 | /* At this point, nick+1 should be a channel name i.e. #foo or &foo | |
376 | * if the channel is found, fine, if not report an error | |
377 | */ | |
378 | ||
379 | if((chptr = find_channel(nick)) != NULL) | |
380 | { | |
381 | struct membership *msptr; | |
382 | ||
383 | msptr = find_channel_membership(chptr, source_p); | |
384 | ||
385 | if(!IsServer(source_p) && !IsService(source_p) && !is_chanop_voiced(msptr)) | |
386 | { | |
387 | sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), | |
631b4a54 JT |
388 | get_id(&me, source_p), |
389 | get_id(source_p, source_p), | |
390 | with_prefix); | |
bc75c3ae | 391 | continue; |
212380e3 AC |
392 | } |
393 | ||
394 | if(!duplicate_ptr(chptr)) | |
395 | { | |
396 | if(ntargets >= ConfigFileEntry.max_targets) | |
397 | { | |
398 | sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), | |
399 | me.name, source_p->name, nick); | |
400 | return (1); | |
401 | } | |
402 | targets[ntargets].ptr = (void *) chptr; | |
403 | targets[ntargets].type = ENTITY_CHANOPS_ON_CHANNEL; | |
404 | targets[ntargets++].flags = type; | |
405 | } | |
406 | } | |
ca4c2a86 | 407 | else if(msgtype != MESSAGE_TYPE_NOTICE) |
212380e3 AC |
408 | { |
409 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
410 | form_str(ERR_NOSUCHNICK), nick); | |
411 | } | |
412 | ||
413 | continue; | |
414 | } | |
415 | ||
c4d2d014 JT |
416 | if(IsServer(client_p) && *nick == '=' && nick[1] == '#') |
417 | { | |
418 | nick++; | |
419 | if((chptr = find_channel(nick)) != NULL) | |
420 | { | |
421 | if(!duplicate_ptr(chptr)) | |
422 | { | |
423 | if(ntargets >= ConfigFileEntry.max_targets) | |
424 | { | |
425 | sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), | |
426 | me.name, source_p->name, nick); | |
427 | return (1); | |
428 | } | |
429 | targets[ntargets].ptr = (void *) chptr; | |
430 | targets[ntargets++].type = ENTITY_CHANNEL_OPMOD; | |
431 | } | |
432 | } | |
433 | ||
434 | /* non existant channel */ | |
ca4c2a86 | 435 | else if(msgtype != MESSAGE_TYPE_NOTICE) |
c4d2d014 JT |
436 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, |
437 | form_str(ERR_NOSUCHNICK), nick); | |
438 | ||
439 | continue; | |
440 | } | |
441 | ||
1fd171a5 JT |
442 | if(strchr(nick, '@') || (IsOper(source_p) && (*nick == '$'))) |
443 | { | |
ca4c2a86 | 444 | handle_special(msgtype, client_p, source_p, nick, text); |
1fd171a5 JT |
445 | continue; |
446 | } | |
447 | ||
212380e3 | 448 | /* no matching anything found - error if not NOTICE */ |
ca4c2a86 | 449 | if(msgtype != MESSAGE_TYPE_NOTICE) |
212380e3 AC |
450 | { |
451 | /* dont give this numeric when source is local, | |
452 | * because its misleading --anfl | |
453 | */ | |
454 | if(!MyClient(source_p) && IsDigit(*nick)) | |
455 | sendto_one(source_p, ":%s %d %s * :Target left IRC. " | |
456 | "Failed to deliver: [%.20s]", | |
457 | get_id(&me, source_p), ERR_NOSUCHNICK, | |
458 | get_id(source_p, source_p), text); | |
459 | else | |
460 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
461 | form_str(ERR_NOSUCHNICK), nick); | |
462 | } | |
463 | ||
464 | } | |
465 | return (1); | |
466 | } | |
467 | ||
468 | /* | |
469 | * duplicate_ptr | |
470 | * | |
471 | * inputs - pointer to check | |
472 | * - pointer to table of entities | |
473 | * - number of valid entities so far | |
3c7d6fcc | 474 | * output - true if duplicate pointer in table, false if not. |
212380e3 AC |
475 | * note, this does the canonize using pointers |
476 | * side effects - NONE | |
477 | */ | |
3c7d6fcc | 478 | static bool |
212380e3 AC |
479 | duplicate_ptr(void *ptr) |
480 | { | |
481 | int i; | |
482 | for(i = 0; i < ntargets; i++) | |
483 | if(targets[i].ptr == ptr) | |
3c7d6fcc EM |
484 | return true; |
485 | return false; | |
212380e3 AC |
486 | } |
487 | ||
488 | /* | |
489 | * msg_channel | |
490 | * | |
491 | * inputs - flag privmsg or notice | |
212380e3 AC |
492 | * - pointer to client_p |
493 | * - pointer to source_p | |
494 | * - pointer to channel | |
495 | * output - NONE | |
496 | * side effects - message given channel | |
497 | * | |
498 | * XXX - We need to rework this a bit, it's a tad ugly. --nenolod | |
499 | */ | |
500 | static void | |
ca4c2a86 | 501 | msg_channel(enum message_type msgtype, |
212380e3 AC |
502 | struct Client *client_p, struct Client *source_p, struct Channel *chptr, |
503 | const char *text) | |
504 | { | |
505 | int result; | |
ca4c2a86 | 506 | hook_data_privmsg_channel hdata; |
212380e3 AC |
507 | |
508 | if(MyClient(source_p)) | |
509 | { | |
510 | /* idle time shouldnt be reset by notices --fl */ | |
ca4c2a86 | 511 | if(msgtype != MESSAGE_TYPE_NOTICE) |
e3354945 | 512 | source_p->localClient->last = rb_current_time(); |
212380e3 AC |
513 | } |
514 | ||
ca4c2a86 AC |
515 | hdata.msgtype = msgtype; |
516 | hdata.source_p = source_p; | |
517 | hdata.chptr = chptr; | |
518 | hdata.text = text; | |
519 | hdata.approved = 0; | |
520 | ||
521 | call_hook(h_privmsg_channel, &hdata); | |
522 | ||
523 | /* memory buffer address may have changed, update pointer */ | |
524 | text = hdata.text; | |
525 | ||
526 | if (hdata.approved != 0) | |
527 | return; | |
528 | ||
6eb03360 AC |
529 | /* hook may have reduced the string to nothing. */ |
530 | if (EmptyString(text)) | |
531 | { | |
532 | /* could be empty after colour stripping and | |
533 | * that would cause problems later */ | |
534 | if(msgtype != MESSAGE_TYPE_NOTICE) | |
535 | sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); | |
536 | return; | |
537 | } | |
538 | ||
212380e3 AC |
539 | /* chanops and voiced can flood their own channel with impunity */ |
540 | if((result = can_send(chptr, source_p, NULL))) | |
541 | { | |
717238d2 | 542 | if(result != CAN_SEND_OPV && MyClient(source_p) && |
d4f7eb4c | 543 | !IsOperGeneral(source_p) && |
717238d2 JT |
544 | !add_channel_target(source_p, chptr)) |
545 | { | |
546 | sendto_one(source_p, form_str(ERR_TARGCHANGE), | |
547 | me.name, source_p->name, chptr->chname); | |
548 | return; | |
549 | } | |
212380e3 | 550 | if(result == CAN_SEND_OPV || |
ca4c2a86 | 551 | !flood_attack_channel(msgtype, source_p, chptr, chptr->chname)) |
212380e3 AC |
552 | { |
553 | sendto_channel_flags(client_p, ALL_MEMBERS, source_p, chptr, | |
ca4c2a86 | 554 | "%s %s :%s", cmdname[msgtype], chptr->chname, text); |
212380e3 AC |
555 | } |
556 | } | |
557 | else if(chptr->mode.mode & MODE_OPMODERATE && | |
8feca176 JT |
558 | (!(chptr->mode.mode & MODE_NOPRIVMSGS) || |
559 | IsMember(source_p, chptr))) | |
212380e3 | 560 | { |
d4f7eb4c | 561 | if(MyClient(source_p) && !IsOperGeneral(source_p) && |
717238d2 JT |
562 | !add_channel_target(source_p, chptr)) |
563 | { | |
564 | sendto_one(source_p, form_str(ERR_TARGCHANGE), | |
565 | me.name, source_p->name, chptr->chname); | |
566 | return; | |
567 | } | |
ca4c2a86 | 568 | if(!flood_attack_channel(msgtype, source_p, chptr, chptr->chname)) |
212380e3 | 569 | { |
c4d2d014 | 570 | sendto_channel_opmod(client_p, source_p, chptr, |
ca4c2a86 | 571 | cmdname[msgtype], text); |
c4d2d014 JT |
572 | } |
573 | } | |
574 | else | |
575 | { | |
ca4c2a86 | 576 | if(msgtype != MESSAGE_TYPE_NOTICE) |
c4d2d014 JT |
577 | sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN, |
578 | form_str(ERR_CANNOTSENDTOCHAN), chptr->chname); | |
579 | } | |
580 | } | |
581 | /* | |
582 | * msg_channel_opmod | |
583 | * | |
584 | * inputs - flag privmsg or notice | |
c4d2d014 JT |
585 | * - pointer to client_p |
586 | * - pointer to source_p | |
587 | * - pointer to channel | |
588 | * output - NONE | |
589 | * side effects - message given channel ops | |
590 | * | |
591 | * XXX - We need to rework this a bit, it's a tad ugly. --nenolod | |
592 | */ | |
593 | static void | |
ca4c2a86 | 594 | msg_channel_opmod(enum message_type msgtype, |
c4d2d014 JT |
595 | struct Client *client_p, struct Client *source_p, |
596 | struct Channel *chptr, const char *text) | |
597 | { | |
ca4c2a86 | 598 | hook_data_privmsg_channel hdata; |
c4d2d014 | 599 | |
ca4c2a86 AC |
600 | hdata.msgtype = msgtype; |
601 | hdata.source_p = source_p; | |
602 | hdata.chptr = chptr; | |
603 | hdata.text = text; | |
604 | hdata.approved = 0; | |
605 | ||
606 | call_hook(h_privmsg_channel, &hdata); | |
607 | ||
608 | /* memory buffer address may have changed, update pointer */ | |
609 | text = hdata.text; | |
610 | ||
611 | if (hdata.approved != 0) | |
612 | return; | |
613 | ||
6eb03360 AC |
614 | /* hook may have reduced the string to nothing. */ |
615 | if (EmptyString(text)) | |
616 | { | |
617 | /* could be empty after colour stripping and | |
618 | * that would cause problems later */ | |
619 | if(msgtype != MESSAGE_TYPE_NOTICE) | |
620 | sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); | |
621 | return; | |
622 | } | |
623 | ||
c4d2d014 JT |
624 | if(chptr->mode.mode & MODE_OPMODERATE && |
625 | (!(chptr->mode.mode & MODE_NOPRIVMSGS) || | |
626 | IsMember(source_p, chptr))) | |
627 | { | |
ca4c2a86 | 628 | if(!flood_attack_channel(msgtype, source_p, chptr, chptr->chname)) |
c4d2d014 JT |
629 | { |
630 | sendto_channel_opmod(client_p, source_p, chptr, | |
ca4c2a86 | 631 | cmdname[msgtype], text); |
212380e3 AC |
632 | } |
633 | } | |
634 | else | |
635 | { | |
ca4c2a86 | 636 | if(msgtype != MESSAGE_TYPE_NOTICE) |
212380e3 AC |
637 | sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN, |
638 | form_str(ERR_CANNOTSENDTOCHAN), chptr->chname); | |
639 | } | |
640 | } | |
641 | ||
642 | /* | |
643 | * msg_channel_flags | |
644 | * | |
55abcbb2 | 645 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
212380e3 | 646 | * say NOTICE must not auto reply |
212380e3 AC |
647 | * - pointer to client_p |
648 | * - pointer to source_p | |
649 | * - pointer to channel | |
650 | * - flags | |
651 | * - pointer to text to send | |
652 | * output - NONE | |
653 | * side effects - message given channel either chanop or voice | |
654 | */ | |
655 | static void | |
ca4c2a86 | 656 | msg_channel_flags(enum message_type msgtype, struct Client *client_p, |
212380e3 AC |
657 | struct Client *source_p, struct Channel *chptr, int flags, const char *text) |
658 | { | |
659 | int type; | |
660 | char c; | |
ca4c2a86 | 661 | hook_data_privmsg_channel hdata; |
212380e3 AC |
662 | |
663 | if(flags & CHFL_VOICE) | |
664 | { | |
665 | type = ONLY_CHANOPSVOICED; | |
666 | c = '+'; | |
667 | } | |
668 | else | |
669 | { | |
670 | type = ONLY_CHANOPS; | |
671 | c = '@'; | |
672 | } | |
673 | ||
674 | if(MyClient(source_p)) | |
675 | { | |
676 | /* idletime shouldnt be reset by notice --fl */ | |
ca4c2a86 | 677 | if(msgtype != MESSAGE_TYPE_NOTICE) |
e3354945 | 678 | source_p->localClient->last = rb_current_time(); |
212380e3 AC |
679 | } |
680 | ||
ca4c2a86 AC |
681 | hdata.msgtype = msgtype; |
682 | hdata.source_p = source_p; | |
683 | hdata.chptr = chptr; | |
684 | hdata.text = text; | |
685 | hdata.approved = 0; | |
686 | ||
687 | call_hook(h_privmsg_channel, &hdata); | |
688 | ||
689 | /* memory buffer address may have changed, update pointer */ | |
690 | text = hdata.text; | |
691 | ||
692 | if (hdata.approved != 0) | |
693 | return; | |
694 | ||
6eb03360 AC |
695 | if (EmptyString(text)) |
696 | { | |
697 | /* could be empty after colour stripping and | |
698 | * that would cause problems later */ | |
699 | if(msgtype != MESSAGE_TYPE_NOTICE) | |
700 | sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); | |
701 | return; | |
702 | } | |
703 | ||
212380e3 | 704 | sendto_channel_flags(client_p, type, source_p, chptr, "%s %c%s :%s", |
ca4c2a86 | 705 | cmdname[msgtype], c, chptr->chname, text); |
212380e3 AC |
706 | } |
707 | ||
212380e3 AC |
708 | static void |
709 | expire_tgchange(void *unused) | |
710 | { | |
711 | tgchange *target; | |
637c4932 | 712 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 713 | |
637c4932 | 714 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, tgchange_list.head) |
212380e3 AC |
715 | { |
716 | target = ptr->data; | |
717 | ||
e3354945 | 718 | if(target->expiry < rb_current_time()) |
212380e3 | 719 | { |
ba200635 AC |
720 | rb_dlinkDelete(ptr, &tgchange_list); |
721 | rb_patricia_remove(tgchange_tree, target->pnode); | |
bd198292 VY |
722 | rb_free(target->ip); |
723 | rb_free(target); | |
212380e3 AC |
724 | } |
725 | } | |
726 | } | |
727 | ||
7fd01f9f EK |
728 | static void |
729 | echo_msg(struct Client *source_p, struct Client *target_p, | |
730 | enum message_type msgtype, const char *text) | |
731 | { | |
732 | if (MyClient(target_p)) | |
733 | { | |
734 | if (!IsCapable(target_p, CLICAP_ECHO_MESSAGE)) | |
735 | return; | |
736 | ||
737 | sendto_one(target_p, ":%s!%s@%s %s %s :%s", | |
738 | target_p->name, target_p->username, target_p->host, | |
739 | cmdname[msgtype], | |
740 | source_p->name, | |
741 | text); | |
742 | return; | |
743 | } | |
744 | ||
745 | sendto_one(target_p, ":%s ECHO %c %s :%s", | |
746 | use_id(source_p), | |
747 | msgtype == MESSAGE_TYPE_PRIVMSG ? 'P' : 'N', | |
748 | use_id(target_p), | |
749 | text); | |
750 | } | |
751 | ||
212380e3 AC |
752 | /* |
753 | * msg_client | |
754 | * | |
55abcbb2 | 755 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
212380e3 | 756 | * say NOTICE must not auto reply |
212380e3 AC |
757 | * - pointer to source_p source (struct Client *) |
758 | * - pointer to target_p target (struct Client *) | |
759 | * - pointer to text | |
760 | * output - NONE | |
761 | * side effects - message given channel either chanop or voice | |
762 | */ | |
763 | static void | |
ca4c2a86 | 764 | msg_client(enum message_type msgtype, |
212380e3 AC |
765 | struct Client *source_p, struct Client *target_p, const char *text) |
766 | { | |
c2874388 | 767 | int do_floodcount = 0; |
ca4c2a86 | 768 | hook_data_privmsg_user hdata; |
c2874388 | 769 | |
212380e3 AC |
770 | if(MyClient(source_p)) |
771 | { | |
55abcbb2 | 772 | /* reset idle time for message only if its not to self |
212380e3 | 773 | * and its not a notice */ |
ca4c2a86 | 774 | if(msgtype != MESSAGE_TYPE_NOTICE) |
e3354945 | 775 | source_p->localClient->last = rb_current_time(); |
212380e3 | 776 | |
c2874388 | 777 | /* auto cprivmsg/cnotice */ |
d4f7eb4c | 778 | do_floodcount = !IsOperGeneral(source_p) && |
c2874388 JT |
779 | !find_allowing_channel(source_p, target_p); |
780 | ||
212380e3 AC |
781 | /* target change stuff, dont limit ctcp replies as that |
782 | * would allow people to start filling up random users | |
783 | * targets just by ctcping them | |
784 | */ | |
ca4c2a86 | 785 | if((msgtype != MESSAGE_TYPE_NOTICE || *text != '\001') && |
c2874388 | 786 | ConfigFileEntry.target_change && do_floodcount) |
212380e3 AC |
787 | { |
788 | if(!add_target(source_p, target_p)) | |
789 | { | |
790 | sendto_one(source_p, form_str(ERR_TARGCHANGE), | |
791 | me.name, source_p->name, target_p->name); | |
792 | return; | |
793 | } | |
794 | } | |
b7b1d686 | 795 | |
ca4c2a86 | 796 | if (do_floodcount && msgtype == MESSAGE_TYPE_NOTICE && *text == '\001' && |
aa9c9ed2 JT |
797 | target_p->large_ctcp_sent + LARGE_CTCP_TIME >= rb_current_time()) |
798 | do_floodcount = 0; | |
799 | ||
b7b1d686 | 800 | if (do_floodcount && |
ca4c2a86 | 801 | flood_attack_client(msgtype, source_p, target_p)) |
b7b1d686 | 802 | return; |
212380e3 AC |
803 | } |
804 | else if(source_p->from == target_p->from) | |
805 | { | |
806 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
807 | "Send message to %s[%s] dropped from %s(Fake Dir)", | |
808 | target_p->name, target_p->from->name, source_p->name); | |
809 | return; | |
810 | } | |
811 | ||
ca4c2a86 | 812 | if(MyConnect(source_p) && (msgtype != MESSAGE_TYPE_NOTICE) && target_p->user && target_p->user->away) |
212380e3 | 813 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), |
c127b45b | 814 | target_p->name, target_p->user->away); |
212380e3 | 815 | |
92f5320e AC |
816 | hdata.msgtype = msgtype; |
817 | hdata.source_p = source_p; | |
818 | hdata.target_p = target_p; | |
819 | hdata.text = text; | |
820 | hdata.approved = 0; | |
ca4c2a86 | 821 | |
92f5320e | 822 | call_hook(h_privmsg_user, &hdata); |
ca4c2a86 | 823 | |
92f5320e AC |
824 | /* buffer location may have changed. */ |
825 | text = hdata.text; | |
ca4c2a86 | 826 | |
92f5320e AC |
827 | if (hdata.approved != 0) |
828 | return; | |
ca4c2a86 | 829 | |
92f5320e AC |
830 | if(MyClient(target_p)) |
831 | { | |
6eb03360 AC |
832 | if (EmptyString(text)) |
833 | { | |
834 | /* could be empty after colour stripping and | |
835 | * that would cause problems later */ | |
836 | if(msgtype != MESSAGE_TYPE_NOTICE) | |
837 | sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); | |
838 | return; | |
839 | } | |
840 | ||
4a9cf869 AC |
841 | add_reply_target(target_p, source_p); |
842 | sendto_anywhere(target_p, source_p, cmdname[msgtype], ":%s", text); | |
7fd01f9f | 843 | echo_msg(target_p, source_p, msgtype, text); |
212380e3 | 844 | } |
b7b1d686 | 845 | else |
ca4c2a86 | 846 | sendto_anywhere(target_p, source_p, cmdname[msgtype], ":%s", text); |
212380e3 AC |
847 | |
848 | return; | |
849 | } | |
850 | ||
851 | /* | |
852 | * flood_attack_client | |
853 | * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC | |
3c7d6fcc | 854 | * says NOTICE must not auto reply |
55abcbb2 | 855 | * - pointer to source Client |
212380e3 | 856 | * - pointer to target Client |
3c7d6fcc | 857 | * output - true if target is under flood attack |
212380e3 AC |
858 | * side effects - check for flood attack on target target_p |
859 | */ | |
3c7d6fcc | 860 | static bool |
ca4c2a86 | 861 | flood_attack_client(enum message_type msgtype, struct Client *source_p, struct Client *target_p) |
212380e3 AC |
862 | { |
863 | int delta; | |
864 | ||
c24efdc0 JT |
865 | /* Services could get many messages legitimately and |
866 | * can be messaged without rate limiting via aliases | |
867 | * and msg user@server. | |
868 | * -- jilles | |
869 | */ | |
870 | if(GlobalSetOptions.floodcount && IsClient(source_p) && source_p != target_p && !IsService(target_p)) | |
212380e3 | 871 | { |
c24efdc0 | 872 | if((target_p->first_received_message_time + 1) < rb_current_time()) |
212380e3 | 873 | { |
c24efdc0 JT |
874 | delta = rb_current_time() - target_p->first_received_message_time; |
875 | target_p->received_number_of_privmsgs -= delta; | |
876 | target_p->first_received_message_time = rb_current_time(); | |
877 | if(target_p->received_number_of_privmsgs <= 0) | |
212380e3 | 878 | { |
c24efdc0 JT |
879 | target_p->received_number_of_privmsgs = 0; |
880 | target_p->flood_noticed = 0; | |
212380e3 AC |
881 | } |
882 | } | |
883 | ||
c24efdc0 JT |
884 | if((target_p->received_number_of_privmsgs >= |
885 | GlobalSetOptions.floodcount) || target_p->flood_noticed) | |
212380e3 | 886 | { |
c24efdc0 | 887 | if(target_p->flood_noticed == 0) |
212380e3 | 888 | { |
f2c1b06b | 889 | sendto_realops_snomask(SNO_BOTS, L_NETWIDE, |
212380e3 AC |
890 | "Possible Flooder %s[%s@%s] on %s target: %s", |
891 | source_p->name, source_p->username, | |
63aecfb9 | 892 | source_p->orighost, |
c88cdb00 | 893 | source_p->servptr->name, target_p->name); |
c24efdc0 | 894 | target_p->flood_noticed = 1; |
212380e3 | 895 | /* add a bit of penalty */ |
c24efdc0 | 896 | target_p->received_number_of_privmsgs += 2; |
212380e3 | 897 | } |
ca4c2a86 | 898 | if(MyClient(source_p) && (msgtype != MESSAGE_TYPE_NOTICE)) |
212380e3 AC |
899 | sendto_one(source_p, |
900 | ":%s NOTICE %s :*** Message to %s throttled due to flooding", | |
901 | me.name, source_p->name, target_p->name); | |
3c7d6fcc | 902 | return true; |
212380e3 AC |
903 | } |
904 | else | |
c24efdc0 | 905 | target_p->received_number_of_privmsgs++; |
212380e3 AC |
906 | } |
907 | ||
3c7d6fcc | 908 | return false; |
212380e3 AC |
909 | } |
910 | ||
212380e3 AC |
911 | /* |
912 | * handle_special | |
913 | * | |
914 | * inputs - server pointer | |
915 | * - client pointer | |
916 | * - nick stuff to grok for opers | |
917 | * - text to send if grok | |
918 | * output - none | |
919 | * side effects - all the traditional oper type messages are parsed here. | |
920 | * i.e. "/msg #some.host." | |
921 | * However, syntax has been changed. | |
922 | * previous syntax "/msg #some.host.mask" | |
923 | * now becomes "/msg $#some.host.mask" | |
924 | * previous syntax of: "/msg $some.server.mask" remains | |
925 | * This disambiguates the syntax. | |
926 | */ | |
927 | static void | |
ca4c2a86 | 928 | handle_special(enum message_type msgtype, struct Client *client_p, |
212380e3 AC |
929 | struct Client *source_p, const char *nick, const char *text) |
930 | { | |
931 | struct Client *target_p; | |
212380e3 | 932 | char *server; |
212380e3 AC |
933 | |
934 | /* user[%host]@server addressed? | |
935 | * NOTE: users can send to user@server, but not user%host@server | |
936 | * or opers@server | |
937 | */ | |
938 | if((server = strchr(nick, '@')) != NULL) | |
939 | { | |
940 | if((target_p = find_server(source_p, server + 1)) == NULL) | |
941 | { | |
942 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
943 | form_str(ERR_NOSUCHSERVER), server + 1); | |
944 | return; | |
945 | } | |
946 | ||
212380e3 AC |
947 | if(!IsOper(source_p)) |
948 | { | |
949 | if(strchr(nick, '%') || (strncmp(nick, "opers", 5) == 0)) | |
950 | { | |
951 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
952 | form_str(ERR_NOSUCHNICK), nick); | |
953 | return; | |
954 | } | |
955 | } | |
956 | ||
957 | /* somewhere else.. */ | |
958 | if(!IsMe(target_p)) | |
959 | { | |
960 | sendto_one(target_p, ":%s %s %s :%s", | |
ca4c2a86 | 961 | get_id(source_p, target_p), cmdname[msgtype], nick, text); |
212380e3 AC |
962 | return; |
963 | } | |
964 | ||
212380e3 | 965 | /* Check if someones msg'ing opers@our.server */ |
ef57f7fb | 966 | if(strncmp(nick, "opers@", 6) == 0) |
212380e3 AC |
967 | { |
968 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "To opers: From: %s: %s", | |
969 | source_p->name, text); | |
970 | return; | |
971 | } | |
972 | ||
ef57f7fb JT |
973 | /* This was not very useful except for bypassing certain |
974 | * restrictions. Note that we still allow sending to | |
975 | * remote servers this way, for messaging pseudoservers | |
976 | * securely whether they have a service{} block or not. | |
977 | * -- jilles | |
212380e3 | 978 | */ |
ef57f7fb JT |
979 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, |
980 | form_str(ERR_NOSUCHNICK), nick); | |
981 | return; | |
212380e3 AC |
982 | } |
983 | ||
984 | /* | |
985 | * the following two cases allow masks in NOTICEs | |
986 | * (for OPERs only) | |
987 | * | |
988 | * Armin, 8Jun90 (gruner@informatik.tu-muenchen.de) | |
989 | */ | |
990 | if(IsOper(source_p) && *nick == '$') | |
991 | { | |
992 | if((*(nick + 1) == '$' || *(nick + 1) == '#')) | |
993 | nick++; | |
994 | else if(MyOper(source_p)) | |
995 | { | |
996 | sendto_one(source_p, | |
997 | ":%s NOTICE %s :The command %s %s is no longer supported, please use $%s", | |
ca4c2a86 | 998 | me.name, source_p->name, cmdname[msgtype], nick, nick); |
212380e3 AC |
999 | return; |
1000 | } | |
1001 | ||
a6f4368b JT |
1002 | if(MyClient(source_p) && !IsOperMassNotice(source_p)) |
1003 | { | |
1004 | sendto_one(source_p, form_str(ERR_NOPRIVS), | |
1005 | me.name, source_p->name, "mass_notice"); | |
1006 | return; | |
1007 | } | |
1008 | ||
f4b4216a EK |
1009 | if(MyClient(source_p)) |
1010 | { | |
1011 | sendto_realops_snomask(SNO_GENERAL, L_ALL | L_NETWIDE, "%s sent mass-%s to %s: %s", | |
1012 | get_oper_name(source_p), | |
1013 | msgtype == MESSAGE_TYPE_PRIVMSG ? "privmsg" : "notice", | |
1014 | nick, text); | |
1015 | } | |
1016 | ||
212380e3 AC |
1017 | sendto_match_butone(IsServer(client_p) ? client_p : NULL, source_p, |
1018 | nick + 1, | |
1019 | (*nick == '#') ? MATCH_HOST : MATCH_SERVER, | |
ca4c2a86 AC |
1020 | "%s $%s :%s", cmdname[msgtype], nick, text); |
1021 | if (msgtype != MESSAGE_TYPE_NOTICE && *text == '\001') | |
aa9c9ed2 | 1022 | source_p->large_ctcp_sent = rb_current_time(); |
212380e3 AC |
1023 | return; |
1024 | } | |
1025 | } |