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1 | /* | |
2 | * charybdis: an advanced ircd. | |
3 | * parse.c: The message parser. | |
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 | * Copyright (C) 2007 William Pitcock | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
23 | * USA | |
24 | * | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "parse.h" | |
29 | #include "client.h" | |
30 | #include "channel.h" | |
31 | #include "common.h" | |
32 | #include "hash.h" | |
33 | #include "match.h" | |
34 | #include "ircd.h" | |
35 | #include "numeric.h" | |
36 | #include "logger.h" | |
37 | #include "s_stats.h" | |
38 | #include "send.h" | |
39 | #include "msg.h" | |
40 | #include "s_conf.h" | |
41 | #include "s_serv.h" | |
42 | #include "packet.h" | |
43 | ||
44 | static struct Dictionary *cmd_dict = NULL; | |
45 | struct Dictionary *alias_dict = NULL; | |
46 | ||
47 | /* parv[0] is not used, and parv[LAST] == NULL */ | |
48 | static char *para[MAXPARA + 2]; | |
49 | ||
50 | static void cancel_clients(struct Client *, struct Client *, char *); | |
51 | static void remove_unknown(struct Client *, char *, char *); | |
52 | ||
53 | static void do_numeric(char[], struct Client *, struct Client *, int, char **); | |
54 | static void do_alias(struct alias_entry *, struct Client *, char *); | |
55 | ||
56 | static int handle_command(struct Message *, struct Client *, struct Client *, int, const char**); | |
57 | ||
58 | static char buffer[1024]; | |
59 | ||
60 | /* turn a string into a parc/parv pair */ | |
61 | ||
62 | ||
63 | static inline int | |
64 | string_to_array(char *string, char **parv) | |
65 | { | |
66 | char *p, *buf = string; | |
67 | int x = 1; | |
68 | ||
69 | parv[x] = NULL; | |
70 | while (*buf == ' ') /* skip leading spaces */ | |
71 | buf++; | |
72 | if(*buf == '\0') /* ignore all-space args */ | |
73 | return x; | |
74 | ||
75 | do | |
76 | { | |
77 | if(*buf == ':') /* Last parameter */ | |
78 | { | |
79 | buf++; | |
80 | parv[x++] = buf; | |
81 | parv[x] = NULL; | |
82 | return x; | |
83 | } | |
84 | else | |
85 | { | |
86 | parv[x++] = buf; | |
87 | parv[x] = NULL; | |
88 | if((p = strchr(buf, ' ')) != NULL) | |
89 | { | |
90 | *p++ = '\0'; | |
91 | buf = p; | |
92 | } | |
93 | else | |
94 | return x; | |
95 | } | |
96 | while (*buf == ' ') | |
97 | buf++; | |
98 | if(*buf == '\0') | |
99 | return x; | |
100 | } | |
101 | /* we can go upto parv[MAXPARA], as parv[0] is skipped */ | |
102 | while (x < MAXPARA); | |
103 | ||
104 | if(*p == ':') | |
105 | p++; | |
106 | ||
107 | parv[x++] = p; | |
108 | parv[x] = NULL; | |
109 | return x; | |
110 | } | |
111 | ||
112 | /* parse() | |
113 | * | |
114 | * given a raw buffer, parses it and generates parv and parc | |
115 | */ | |
116 | void | |
117 | parse(struct Client *client_p, char *pbuffer, char *bufend) | |
118 | { | |
119 | struct Client *from = client_p; | |
120 | char *sender; | |
121 | char *ch; | |
122 | char *s; | |
123 | char *end; | |
124 | int i = 1; | |
125 | char *numeric = 0; | |
126 | struct Message *mptr; | |
127 | ||
128 | s_assert(MyConnect(client_p)); | |
129 | s_assert(client_p->localClient->F != NULL); | |
130 | if(IsAnyDead(client_p)) | |
131 | return; | |
132 | ||
133 | for (ch = pbuffer; *ch == ' '; ch++) /* skip spaces */ | |
134 | /* null statement */ ; | |
135 | ||
136 | para[0] = from->name; | |
137 | ||
138 | if(*ch == ':') | |
139 | { | |
140 | ch++; | |
141 | ||
142 | /* point sender to the sender param */ | |
143 | sender = ch; | |
144 | ||
145 | if((s = strchr(ch, ' '))) | |
146 | { | |
147 | *s = '\0'; | |
148 | s++; | |
149 | ch = s; | |
150 | } | |
151 | ||
152 | if(*sender && IsServer(client_p)) | |
153 | { | |
154 | from = find_client(sender); | |
155 | ||
156 | /* didnt find any matching client, issue a kill */ | |
157 | if(from == NULL) | |
158 | { | |
159 | ServerStats.is_unpf++; | |
160 | remove_unknown(client_p, sender, pbuffer); | |
161 | return; | |
162 | } | |
163 | ||
164 | para[0] = from->name; | |
165 | ||
166 | /* fake direction, hmm. */ | |
167 | if(from->from != client_p) | |
168 | { | |
169 | ServerStats.is_wrdi++; | |
170 | cancel_clients(client_p, from, pbuffer); | |
171 | return; | |
172 | } | |
173 | } | |
174 | while (*ch == ' ') | |
175 | ch++; | |
176 | } | |
177 | ||
178 | if(*ch == '\0') | |
179 | { | |
180 | ServerStats.is_empt++; | |
181 | return; | |
182 | } | |
183 | ||
184 | /* at this point there must be some sort of command parameter */ | |
185 | ||
186 | /* | |
187 | * Extract the command code from the packet. Point s to the end | |
188 | * of the command code and calculate the length using pointer | |
189 | * arithmetic. Note: only need length for numerics and *all* | |
190 | * numerics must have parameters and thus a space after the command | |
191 | * code. -avalon | |
192 | */ | |
193 | ||
194 | /* EOB is 3 chars long but is not a numeric */ | |
195 | ||
196 | if(*(ch + 3) == ' ' && /* ok, lets see if its a possible numeric.. */ | |
197 | IsDigit(*ch) && IsDigit(*(ch + 1)) && IsDigit(*(ch + 2))) | |
198 | { | |
199 | mptr = NULL; | |
200 | numeric = ch; | |
201 | ServerStats.is_num++; | |
202 | s = ch + 3; /* I know this is ' ' from above if */ | |
203 | *s++ = '\0'; /* blow away the ' ', and point s to next part */ | |
204 | } | |
205 | else | |
206 | { | |
207 | int ii = 0; | |
208 | ||
209 | if((s = strchr(ch, ' '))) | |
210 | *s++ = '\0'; | |
211 | ||
212 | mptr = irc_dictionary_retrieve(cmd_dict, ch); | |
213 | ||
214 | /* no command or its encap only, error */ | |
215 | if(!mptr || !mptr->cmd) | |
216 | { | |
217 | /* | |
218 | * Note: Give error message *only* to recognized | |
219 | * persons. It's a nightmare situation to have | |
220 | * two programs sending "Unknown command"'s or | |
221 | * equivalent to each other at full blast.... | |
222 | * If it has got to person state, it at least | |
223 | * seems to be well behaving. Perhaps this message | |
224 | * should never be generated, though... --msa | |
225 | * Hm, when is the buffer empty -- if a command | |
226 | * code has been found ?? -Armin | |
227 | */ | |
228 | if(pbuffer[0] != '\0') | |
229 | { | |
230 | if (IsPerson(client_p)) | |
231 | { | |
232 | struct alias_entry *aptr = irc_dictionary_retrieve(alias_dict, ch); | |
233 | if (aptr != NULL) | |
234 | { | |
235 | do_alias(aptr, client_p, s); | |
236 | return; | |
237 | } | |
238 | } | |
239 | if(IsPerson(from)) | |
240 | { | |
241 | sendto_one(from, form_str(ERR_UNKNOWNCOMMAND), | |
242 | me.name, from->name, ch); | |
243 | } | |
244 | } | |
245 | ServerStats.is_unco++; | |
246 | return; | |
247 | } | |
248 | ||
249 | ii = bufend - ((s) ? s : ch); | |
250 | mptr->bytes += ii; | |
251 | } | |
252 | ||
253 | end = bufend - 1; | |
254 | ||
255 | /* XXX this should be done before parse() is called */ | |
256 | if(*end == '\n') | |
257 | *end-- = '\0'; | |
258 | if(*end == '\r') | |
259 | *end = '\0'; | |
260 | ||
261 | if(s != NULL) | |
262 | i = string_to_array(s, para); | |
263 | ||
264 | if(mptr == NULL) | |
265 | { | |
266 | do_numeric(numeric, client_p, from, i, para); | |
267 | return; | |
268 | } | |
269 | ||
270 | if(handle_command(mptr, client_p, from, i, /* XXX discards const!!! */ (const char **)para) < -1) | |
271 | { | |
272 | char *p; | |
273 | for (p = pbuffer; p <= end; p += 8) | |
274 | { | |
275 | /* HACK HACK */ | |
276 | /* Its expected this nasty code can be removed | |
277 | * or rewritten later if still needed. | |
278 | */ | |
279 | if((unsigned long) (p + 8) > (unsigned long) end) | |
280 | { | |
281 | for (; p <= end; p++) | |
282 | { | |
283 | ilog(L_MAIN, "%02x |%c", p[0], p[0]); | |
284 | } | |
285 | } | |
286 | else | |
287 | ilog(L_MAIN, | |
288 | "%02x %02x %02x %02x %02x %02x %02x %02x |%c%c%c%c%c%c%c%c", | |
289 | p[0], p[1], p[2], p[3], p[4], p[5], | |
290 | p[6], p[7], p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); | |
291 | } | |
292 | } | |
293 | ||
294 | } | |
295 | ||
296 | /* | |
297 | * handle_command | |
298 | * | |
299 | * inputs - pointer to message block | |
300 | * - pointer to client | |
301 | * - pointer to client message is from | |
302 | * - count of number of args | |
303 | * - pointer to argv[] array | |
304 | * output - -1 if error from server | |
305 | * side effects - | |
306 | */ | |
307 | static int | |
308 | handle_command(struct Message *mptr, struct Client *client_p, | |
309 | struct Client *from, int i, const char** hpara) | |
310 | { | |
311 | struct MessageEntry ehandler; | |
312 | MessageHandler handler = 0; | |
313 | char squitreason[80]; | |
314 | ||
315 | if(IsAnyDead(client_p)) | |
316 | return -1; | |
317 | ||
318 | if(IsServer(client_p)) | |
319 | mptr->rcount++; | |
320 | ||
321 | mptr->count++; | |
322 | ||
323 | /* New patch to avoid server flooding from unregistered connects | |
324 | - Pie-Man 07/27/2000 */ | |
325 | ||
326 | if(!IsRegistered(client_p)) | |
327 | { | |
328 | /* if its from a possible server connection | |
329 | * ignore it.. more than likely its a header thats sneaked through | |
330 | */ | |
331 | ||
332 | if(IsAnyServer(client_p) && !(mptr->flags & MFLG_UNREG)) | |
333 | return (1); | |
334 | } | |
335 | ||
336 | ehandler = mptr->handlers[from->handler]; | |
337 | handler = ehandler.handler; | |
338 | ||
339 | /* check right amount of params is passed... --is */ | |
340 | if(i < ehandler.min_para || | |
341 | (ehandler.min_para && EmptyString(hpara[ehandler.min_para - 1]))) | |
342 | { | |
343 | if(!IsServer(client_p)) | |
344 | { | |
345 | sendto_one(client_p, form_str(ERR_NEEDMOREPARAMS), | |
346 | me.name, | |
347 | EmptyString(client_p->name) ? "*" : client_p->name, | |
348 | mptr->cmd); | |
349 | if(MyClient(client_p)) | |
350 | return (1); | |
351 | else | |
352 | return (-1); | |
353 | } | |
354 | ||
355 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
356 | "Dropping server %s due to (invalid) command '%s'" | |
357 | " with only %d arguments (expecting %d).", | |
358 | client_p->name, mptr->cmd, i, ehandler.min_para); | |
359 | ilog(L_SERVER, | |
360 | "Insufficient parameters (%d < %d) for command '%s' from %s.", | |
361 | i, ehandler.min_para, mptr->cmd, client_p->name); | |
362 | rb_snprintf(squitreason, sizeof squitreason, | |
363 | "Insufficient parameters (%d < %d) for command '%s'", | |
364 | i, ehandler.min_para, mptr->cmd); | |
365 | exit_client(client_p, client_p, client_p, squitreason); | |
366 | return (-1); | |
367 | } | |
368 | ||
369 | (*handler) (client_p, from, i, hpara); | |
370 | return (1); | |
371 | } | |
372 | ||
373 | void | |
374 | handle_encap(struct Client *client_p, struct Client *source_p, | |
375 | const char *command, int parc, const char *parv[]) | |
376 | { | |
377 | struct Message *mptr; | |
378 | struct MessageEntry ehandler; | |
379 | MessageHandler handler = 0; | |
380 | ||
381 | parv[0] = source_p->name; | |
382 | ||
383 | mptr = irc_dictionary_retrieve(cmd_dict, command); | |
384 | ||
385 | if(mptr == NULL || mptr->cmd == NULL) | |
386 | return; | |
387 | ||
388 | ehandler = mptr->handlers[ENCAP_HANDLER]; | |
389 | handler = ehandler.handler; | |
390 | ||
391 | if(parc < ehandler.min_para || | |
392 | (ehandler.min_para && EmptyString(parv[ehandler.min_para - 1]))) | |
393 | return; | |
394 | ||
395 | (*handler) (client_p, source_p, parc, parv); | |
396 | } | |
397 | ||
398 | /* | |
399 | * clear_hash_parse() | |
400 | * | |
401 | * inputs - | |
402 | * output - NONE | |
403 | * side effects - MUST MUST be called at startup ONCE before | |
404 | * any other keyword hash routine is used. | |
405 | * | |
406 | */ | |
407 | void | |
408 | clear_hash_parse() | |
409 | { | |
410 | cmd_dict = irc_dictionary_create(strcasecmp); | |
411 | } | |
412 | ||
413 | /* mod_add_cmd | |
414 | * | |
415 | * inputs - command name | |
416 | * - pointer to struct Message | |
417 | * output - none | |
418 | * side effects - load this one command name | |
419 | * msg->count msg->bytes is modified in place, in | |
420 | * modules address space. Might not want to do that... | |
421 | */ | |
422 | void | |
423 | mod_add_cmd(struct Message *msg) | |
424 | { | |
425 | s_assert(msg != NULL); | |
426 | if(msg == NULL) | |
427 | return; | |
428 | ||
429 | if (irc_dictionary_find(cmd_dict, msg->cmd) != NULL) | |
430 | return; | |
431 | ||
432 | msg->count = 0; | |
433 | msg->rcount = 0; | |
434 | msg->bytes = 0; | |
435 | ||
436 | irc_dictionary_add(cmd_dict, msg->cmd, msg); | |
437 | } | |
438 | ||
439 | /* mod_del_cmd | |
440 | * | |
441 | * inputs - command name | |
442 | * output - none | |
443 | * side effects - unload this one command name | |
444 | */ | |
445 | void | |
446 | mod_del_cmd(struct Message *msg) | |
447 | { | |
448 | s_assert(msg != NULL); | |
449 | if(msg == NULL) | |
450 | return; | |
451 | ||
452 | irc_dictionary_delete(cmd_dict, msg->cmd); | |
453 | } | |
454 | ||
455 | /* | |
456 | * report_messages | |
457 | * | |
458 | * inputs - pointer to client to report to | |
459 | * output - NONE | |
460 | * side effects - NONE | |
461 | */ | |
462 | void | |
463 | report_messages(struct Client *source_p) | |
464 | { | |
465 | struct DictionaryIter iter; | |
466 | struct Message *msg; | |
467 | struct alias_entry *amsg; | |
468 | ||
469 | DICTIONARY_FOREACH(msg, &iter, cmd_dict) | |
470 | { | |
471 | s_assert(msg->cmd != NULL); | |
472 | sendto_one_numeric(source_p, RPL_STATSCOMMANDS, | |
473 | form_str(RPL_STATSCOMMANDS), | |
474 | msg->cmd, msg->count, | |
475 | msg->bytes, msg->rcount); | |
476 | } | |
477 | ||
478 | DICTIONARY_FOREACH(amsg, &iter, alias_dict) | |
479 | { | |
480 | s_assert(amsg->name != NULL); | |
481 | sendto_one_numeric(source_p, RPL_STATSCOMMANDS, | |
482 | form_str(RPL_STATSCOMMANDS), | |
483 | amsg->name, amsg->hits, 0, 0); | |
484 | } | |
485 | } | |
486 | ||
487 | /* cancel_clients() | |
488 | * | |
489 | * inputs - client who sent us the message, client with fake | |
490 | * direction, command | |
491 | * outputs - a given warning about the fake direction | |
492 | * side effects - | |
493 | */ | |
494 | static void | |
495 | cancel_clients(struct Client *client_p, struct Client *source_p, char *cmd) | |
496 | { | |
497 | /* ok, fake prefix happens naturally during a burst on a nick | |
498 | * collision with TS5, we cant kill them because one client has to | |
499 | * survive, so we just send an error. | |
500 | */ | |
501 | if(IsServer(source_p) || IsMe(source_p)) | |
502 | { | |
503 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
504 | "Message for %s[%s] from %s", | |
505 | source_p->name, source_p->from->name, | |
506 | client_p->name); | |
507 | } | |
508 | else | |
509 | { | |
510 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
511 | "Message for %s[%s@%s!%s] from %s (TS, ignored)", | |
512 | source_p->name, | |
513 | source_p->username, | |
514 | source_p->host, | |
515 | source_p->from->name, | |
516 | client_p->name); | |
517 | } | |
518 | } | |
519 | ||
520 | /* remove_unknown() | |
521 | * | |
522 | * inputs - client who gave us message, supposed sender, buffer | |
523 | * output - | |
524 | * side effects - kills issued for clients, squits for servers | |
525 | */ | |
526 | static void | |
527 | remove_unknown(struct Client *client_p, char *lsender, char *lbuffer) | |
528 | { | |
529 | int slen = strlen(lsender); | |
530 | char sid[4]; | |
531 | struct Client *server; | |
532 | ||
533 | /* meepfoo is a nickname (ignore) | |
534 | * #XXXXXXXX is a UID (KILL) | |
535 | * #XX is a SID (SQUIT) | |
536 | * meep.foo is a server (SQUIT) | |
537 | */ | |
538 | if((IsDigit(lsender[0]) && slen == 3) || | |
539 | (strchr(lsender, '.') != NULL)) | |
540 | { | |
541 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
542 | "Unknown prefix (%s) from %s, Squitting %s", | |
543 | lbuffer, client_p->name, lsender); | |
544 | ||
545 | sendto_one(client_p, | |
546 | ":%s SQUIT %s :(Unknown prefix (%s) from %s)", | |
547 | get_id(&me, client_p), lsender, | |
548 | lbuffer, client_p->name); | |
549 | } | |
550 | else if(!IsDigit(lsender[0])) | |
551 | ; | |
552 | else if(slen != 9) | |
553 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
554 | "Invalid prefix (%s) from %s", | |
555 | lbuffer, client_p->name); | |
556 | else | |
557 | { | |
558 | memcpy(sid, lsender, 3); | |
559 | sid[3] = '\0'; | |
560 | server = find_server(NULL, sid); | |
561 | if (server != NULL && server->from == client_p) | |
562 | sendto_one(client_p, ":%s KILL %s :%s (Unknown Client)", | |
563 | get_id(&me, client_p), lsender, me.name); | |
564 | } | |
565 | } | |
566 | ||
567 | ||
568 | ||
569 | /* | |
570 | * | |
571 | * parc number of arguments ('sender' counted as one!) | |
572 | * parv[1]..parv[parc-1] | |
573 | * pointers to additional parameters, this is a NULL | |
574 | * terminated list (parv[parc] == NULL). | |
575 | * | |
576 | * *WARNING* | |
577 | * Numerics are mostly error reports. If there is something | |
578 | * wrong with the message, just *DROP* it! Don't even think of | |
579 | * sending back a neat error message -- big danger of creating | |
580 | * a ping pong error message... | |
581 | */ | |
582 | static void | |
583 | do_numeric(char numeric[], struct Client *client_p, struct Client *source_p, int parc, char *parv[]) | |
584 | { | |
585 | struct Client *target_p; | |
586 | struct Channel *chptr; | |
587 | ||
588 | if(parc < 2 || !IsServer(source_p)) | |
589 | return; | |
590 | ||
591 | /* Remap low number numerics. */ | |
592 | if(numeric[0] == '0') | |
593 | numeric[0] = '1'; | |
594 | ||
595 | /* | |
596 | * Prepare the parameter portion of the message into 'buffer'. | |
597 | * (Because the buffer is twice as large as the message buffer | |
598 | * for the socket, no overflow can occur here... ...on current | |
599 | * assumptions--bets are off, if these are changed --msa) | |
600 | * Note: if buffer is non-empty, it will begin with SPACE. | |
601 | */ | |
602 | if(parc > 1) | |
603 | { | |
604 | char *t = buffer; /* Current position within the buffer */ | |
605 | int i; | |
606 | int tl; /* current length of presently being built string in t */ | |
607 | for (i = 2; i < (parc - 1); i++) | |
608 | { | |
609 | tl = rb_sprintf(t, " %s", parv[i]); | |
610 | t += tl; | |
611 | } | |
612 | rb_sprintf(t, " :%s", parv[parc - 1]); | |
613 | } | |
614 | ||
615 | if((target_p = find_client(parv[1])) != NULL) | |
616 | { | |
617 | if(IsMe(target_p)) | |
618 | { | |
619 | /* | |
620 | * We shouldn't get numerics sent to us, | |
621 | * any numerics we do get indicate a bug somewhere.. | |
622 | */ | |
623 | /* ugh. this is here because of nick collisions. when two servers | |
624 | * relink, they burst each other their nicks, then perform collides. | |
625 | * if there is a nick collision, BOTH servers will kill their own | |
626 | * nicks, and BOTH will kill the other servers nick, which wont exist, | |
627 | * because it will have been already killed by the local server. | |
628 | * | |
629 | * unfortunately, as we cant guarantee other servers will do the | |
630 | * "right thing" on a nick collision, we have to keep both kills. | |
631 | * ergo we need to ignore ERR_NOSUCHNICK. --fl_ | |
632 | */ | |
633 | /* quick comment. This _was_ tried. i.e. assume the other servers | |
634 | * will do the "right thing" and kill a nick that is colliding. | |
635 | * unfortunately, it did not work. --Dianora | |
636 | */ | |
637 | /* note, now we send PING on server connect, we can | |
638 | * also get ERR_NOSUCHSERVER.. | |
639 | */ | |
640 | if(atoi(numeric) != ERR_NOSUCHNICK && | |
641 | atoi(numeric) != ERR_NOSUCHSERVER) | |
642 | sendto_realops_snomask(SNO_GENERAL, L_ADMIN, | |
643 | "*** %s(via %s) sent a %s numeric to me: %s", | |
644 | source_p->name, | |
645 | client_p->name, numeric, buffer); | |
646 | return; | |
647 | } | |
648 | else if(target_p->from == client_p) | |
649 | { | |
650 | /* This message changed direction (nick collision?) | |
651 | * ignore it. | |
652 | */ | |
653 | return; | |
654 | } | |
655 | ||
656 | /* csircd will send out unknown umode flag for +a (admin), drop it here. */ | |
657 | if((atoi(numeric) == ERR_UMODEUNKNOWNFLAG) && MyClient(target_p)) | |
658 | return; | |
659 | ||
660 | /* Fake it for server hiding, if its our client */ | |
661 | sendto_one(target_p, ":%s %s %s%s", | |
662 | get_id(source_p, target_p), numeric, | |
663 | get_id(target_p, target_p), buffer); | |
664 | return; | |
665 | } | |
666 | else if((chptr = find_channel(parv[1])) != NULL) | |
667 | sendto_channel_flags(client_p, ALL_MEMBERS, source_p, chptr, | |
668 | "%s %s%s", | |
669 | numeric, chptr->chname, buffer); | |
670 | } | |
671 | ||
672 | static void do_alias(struct alias_entry *aptr, struct Client *source_p, char *text) | |
673 | { | |
674 | char *p; | |
675 | struct Client *target_p; | |
676 | ||
677 | if (!IsFloodDone(source_p) && source_p->localClient->receiveM > 20) | |
678 | flood_endgrace(source_p); | |
679 | ||
680 | p = strchr(aptr->target, '@'); | |
681 | if (p != NULL) | |
682 | { | |
683 | /* user@server */ | |
684 | target_p = find_server(NULL, p + 1); | |
685 | if (target_p != NULL && IsMe(target_p)) | |
686 | target_p = NULL; | |
687 | } | |
688 | else | |
689 | { | |
690 | /* nick, must be +S */ | |
691 | target_p = find_named_person(aptr->target); | |
692 | if (target_p != NULL && !IsService(target_p)) | |
693 | target_p = NULL; | |
694 | } | |
695 | ||
696 | if (target_p == NULL) | |
697 | { | |
698 | sendto_one_numeric(source_p, ERR_SERVICESDOWN, form_str(ERR_SERVICESDOWN), aptr->target); | |
699 | return; | |
700 | } | |
701 | ||
702 | if (text != NULL && *text == ':') | |
703 | text++; | |
704 | if (text == NULL || *text == '\0') | |
705 | { | |
706 | sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); | |
707 | return; | |
708 | } | |
709 | ||
710 | /* increment the hitcounter on this alias */ | |
711 | aptr->hits++; | |
712 | ||
713 | sendto_one(target_p, ":%s PRIVMSG %s :%s", | |
714 | get_id(source_p, target_p), | |
715 | p != NULL ? aptr->target : get_id(target_p, target_p), | |
716 | text); | |
717 | } | |
718 | ||
719 | int | |
720 | m_not_oper(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
721 | { | |
722 | sendto_one_numeric(source_p, ERR_NOPRIVILEGES, form_str(ERR_NOPRIVILEGES)); | |
723 | return 0; | |
724 | } | |
725 | ||
726 | int | |
727 | m_unregistered(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
728 | { | |
729 | /* bit of a hack. | |
730 | * I don't =really= want to waste a bit in a flag | |
731 | * number_of_nick_changes is only really valid after the client | |
732 | * is fully registered.. | |
733 | */ | |
734 | if(client_p->localClient->number_of_nick_changes == 0) | |
735 | { | |
736 | sendto_one(client_p, form_str(ERR_NOTREGISTERED), me.name); | |
737 | client_p->localClient->number_of_nick_changes++; | |
738 | } | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
743 | int | |
744 | m_registered(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
745 | { | |
746 | sendto_one(client_p, form_str(ERR_ALREADYREGISTRED), me.name, source_p->name); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | int | |
751 | m_ignore(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
752 | { | |
753 | return 0; | |
754 | } |