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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_nick.c: Sets a users nick. | |
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 | * $Id: m_nick.c 3518 2007-06-22 21:59:09Z jilles $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "client.h" | |
29 | #include "hash.h" | |
30 | #include "match.h" | |
31 | #include "ircd.h" | |
32 | #include "numeric.h" | |
33 | #include "s_conf.h" | |
34 | #include "s_stats.h" | |
35 | #include "s_user.h" | |
36 | #include "hash.h" | |
37 | #include "whowas.h" | |
38 | #include "s_serv.h" | |
39 | #include "send.h" | |
40 | #include "channel.h" | |
41 | #include "logger.h" | |
42 | #include "msg.h" | |
43 | #include "parse.h" | |
44 | #include "modules.h" | |
45 | #include "common.h" | |
46 | #include "packet.h" | |
47 | #include "scache.h" | |
48 | #include "s_newconf.h" | |
49 | #include "monitor.h" | |
50 | ||
51 | /* Give all UID nicks the same TS. This ensures nick TS is always the same on | |
52 | * all servers for each nick-user pair, also if a user with a UID nick changes | |
53 | * their nick but is collided again (the server detecting the collision will | |
54 | * not propagate the nick change further). -- jilles | |
55 | */ | |
56 | #define SAVE_NICKTS 100 | |
57 | ||
58 | static int mr_nick(struct Client *, struct Client *, int, const char **); | |
59 | static int m_nick(struct Client *, struct Client *, int, const char **); | |
60 | static int mc_nick(struct Client *, struct Client *, int, const char **); | |
61 | static int ms_nick(struct Client *, struct Client *, int, const char **); | |
62 | static int ms_uid(struct Client *, struct Client *, int, const char **); | |
63 | static int ms_euid(struct Client *, struct Client *, int, const char **); | |
64 | static int ms_save(struct Client *, struct Client *, int, const char **); | |
65 | static int can_save(struct Client *); | |
66 | static void save_user(struct Client *, struct Client *, struct Client *); | |
67 | static void bad_nickname(struct Client *, const char *); | |
68 | ||
69 | struct Message nick_msgtab = { | |
70 | "NICK", 0, 0, 0, MFLG_SLOW, | |
71 | {{mr_nick, 0}, {m_nick, 0}, {mc_nick, 3}, {ms_nick, 8}, mg_ignore, {m_nick, 0}} | |
72 | }; | |
73 | struct Message uid_msgtab = { | |
74 | "UID", 0, 0, 0, MFLG_SLOW, | |
75 | {mg_ignore, mg_ignore, mg_ignore, {ms_uid, 9}, mg_ignore, mg_ignore} | |
76 | }; | |
77 | struct Message euid_msgtab = { | |
78 | "EUID", 0, 0, 0, MFLG_SLOW, | |
79 | {mg_ignore, mg_ignore, mg_ignore, {ms_euid, 12}, mg_ignore, mg_ignore} | |
80 | }; | |
81 | struct Message save_msgtab = { | |
82 | "SAVE", 0, 0, 0, MFLG_SLOW, | |
83 | {mg_ignore, mg_ignore, mg_ignore, {ms_save, 3}, mg_ignore, mg_ignore} | |
84 | }; | |
85 | ||
86 | mapi_clist_av1 nick_clist[] = { &nick_msgtab, &uid_msgtab, &euid_msgtab, | |
87 | &save_msgtab, NULL }; | |
88 | ||
89 | DECLARE_MODULE_AV1(nick, NULL, NULL, nick_clist, NULL, NULL, "$Revision: 3518 $"); | |
90 | ||
91 | static int change_remote_nick(struct Client *, struct Client *, time_t, | |
92 | const char *, int); | |
93 | ||
94 | static int clean_nick(const char *, int loc_client); | |
95 | static int clean_username(const char *); | |
96 | static int clean_host(const char *); | |
97 | static int clean_uid(const char *uid); | |
98 | ||
99 | static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick); | |
100 | static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int); | |
101 | static int register_client(struct Client *client_p, struct Client *server, | |
102 | const char *nick, time_t newts, int parc, const char *parv[]); | |
103 | ||
104 | static int perform_nick_collides(struct Client *, struct Client *, | |
105 | struct Client *, int, const char **, | |
106 | time_t, const char *, const char *); | |
107 | static int perform_nickchange_collides(struct Client *, struct Client *, | |
108 | struct Client *, int, const char **, time_t, const char *); | |
109 | ||
110 | /* mr_nick() | |
111 | * parv[0] = sender prefix | |
112 | * parv[1] = nickname | |
113 | */ | |
114 | static int | |
115 | mr_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
116 | { | |
117 | struct Client *target_p; | |
118 | char nick[NICKLEN]; | |
119 | char *s; | |
120 | ||
121 | if (strlen(client_p->id) == 3) | |
122 | { | |
123 | exit_client(client_p, client_p, client_p, "Mixing client and server protocol"); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | if(parc < 2 || EmptyString(parv[1]) || (parv[1][0] == '~')) | |
128 | { | |
129 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
130 | me.name, EmptyString(source_p->name) ? "*" : source_p->name); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | /* due to the scandinavian origins, (~ being uppercase of ^) and ~ | |
135 | * being disallowed as a nick char, we need to chop the first ~ | |
136 | * instead of just erroring. | |
137 | */ | |
138 | if((s = strchr(parv[1], '~'))) | |
139 | *s = '\0'; | |
140 | ||
141 | /* copy the nick and terminate it */ | |
142 | rb_strlcpy(nick, parv[1], sizeof(nick)); | |
143 | ||
144 | /* check the nickname is ok */ | |
145 | if(!clean_nick(nick, 1)) | |
146 | { | |
147 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
148 | me.name, EmptyString(parv[0]) ? "*" : parv[0], parv[1]); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | /* check if the nick is resv'd */ | |
153 | if(find_nick_resv(nick)) | |
154 | { | |
155 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
156 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | if(irc_dictionary_find(nd_dict, nick)) | |
161 | { | |
162 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
163 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | if((target_p = find_named_client(nick)) == NULL) | |
168 | set_initial_nick(client_p, source_p, nick); | |
169 | else if(source_p == target_p) | |
170 | strcpy(source_p->name, nick); | |
171 | else | |
172 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, "*", nick); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | /* m_nick() | |
178 | * parv[0] = sender prefix | |
179 | * parv[1] = nickname | |
180 | */ | |
181 | static int | |
182 | m_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
183 | { | |
184 | struct Client *target_p; | |
185 | char nick[NICKLEN]; | |
186 | char *s; | |
187 | ||
188 | if(parc < 2 || EmptyString(parv[1]) || (parv[1][0] == '~')) | |
189 | { | |
190 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /* due to the scandinavian origins, (~ being uppercase of ^) and ~ | |
195 | * being disallowed as a nick char, we need to chop the first ~ | |
196 | * instead of just erroring. | |
197 | */ | |
198 | if((s = strchr(parv[1], '~'))) | |
199 | *s = '\0'; | |
200 | ||
201 | /* mark end of grace period, to prevent nickflooding */ | |
202 | if(!IsFloodDone(source_p)) | |
203 | flood_endgrace(source_p); | |
204 | ||
205 | /* terminate nick to NICKLEN, we dont want clean_nick() to error! */ | |
206 | rb_strlcpy(nick, parv[1], sizeof(nick)); | |
207 | ||
208 | /* check the nickname is ok */ | |
209 | if(!clean_nick(nick, 1)) | |
210 | { | |
211 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, parv[0], nick); | |
212 | return 0; | |
213 | } | |
214 | ||
215 | if(!IsExemptResv(source_p) && find_nick_resv(nick)) | |
216 | { | |
217 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); | |
218 | return 0; | |
219 | } | |
220 | ||
221 | if(irc_dictionary_find(nd_dict, nick)) | |
222 | { | |
223 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
224 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
225 | return 0; | |
226 | } | |
227 | ||
228 | if((target_p = find_named_client(nick))) | |
229 | { | |
230 | /* If(target_p == source_p) the client is changing nicks between | |
231 | * equivalent nicknames ie: [nick] -> {nick} | |
232 | */ | |
233 | if(target_p == source_p) | |
234 | { | |
235 | /* check the nick isnt exactly the same */ | |
236 | if(strcmp(target_p->name, nick)) | |
237 | change_local_nick(client_p, source_p, nick, 1); | |
238 | ||
239 | } | |
240 | ||
241 | /* drop unregged client */ | |
242 | else if(IsUnknown(target_p)) | |
243 | { | |
244 | exit_client(NULL, target_p, &me, "Overridden"); | |
245 | change_local_nick(client_p, source_p, nick, 1); | |
246 | } | |
247 | else | |
248 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, parv[0], nick); | |
249 | ||
250 | return 0; | |
251 | } | |
252 | else | |
253 | change_local_nick(client_p, source_p, nick, 1); | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | /* ms_nick() | |
259 | * | |
260 | * server -> server nick change | |
261 | * parv[0] = sender prefix | |
262 | * parv[1] = nickname | |
263 | * parv[2] = TS when nick change | |
264 | * | |
265 | * server introducing new nick | |
266 | * parv[0] = sender prefix | |
267 | * parv[1] = nickname | |
268 | * parv[2] = hop count | |
269 | * parv[3] = TS | |
270 | * parv[4] = umode | |
271 | * parv[5] = username | |
272 | * parv[6] = hostname | |
273 | * parv[7] = server | |
274 | * parv[8] = ircname | |
275 | */ | |
276 | static int | |
277 | mc_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
278 | { | |
279 | struct Client *target_p; | |
280 | time_t newts = 0; | |
281 | ||
282 | /* if nicks erroneous, or too long, kill */ | |
283 | if(!clean_nick(parv[1], 0)) | |
284 | { | |
285 | bad_nickname(client_p, parv[1]); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | newts = atol(parv[2]); | |
290 | target_p = find_named_client(parv[1]); | |
291 | ||
292 | /* if the nick doesnt exist, allow it and process like normal */ | |
293 | if(target_p == NULL) | |
294 | { | |
295 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
296 | } | |
297 | else if(IsUnknown(target_p)) | |
298 | { | |
299 | exit_client(NULL, target_p, &me, "Overridden"); | |
300 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
301 | } | |
302 | else if(target_p == source_p) | |
303 | { | |
304 | /* client changing case of nick */ | |
305 | if(strcmp(target_p->name, parv[1])) | |
306 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
307 | } | |
308 | /* we've got a collision! */ | |
309 | else | |
310 | perform_nickchange_collides(source_p, client_p, target_p, | |
311 | parc, parv, newts, parv[1]); | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
316 | static int | |
317 | ms_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
318 | { | |
319 | struct Client *target_p; | |
320 | time_t newts = 0; | |
321 | char squitreason[100]; | |
322 | ||
323 | if(parc != 9) | |
324 | { | |
325 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
326 | "Dropping server %s due to (invalid) command 'NICK' " | |
327 | "with %d arguments (expecting 9)", client_p->name, parc); | |
328 | ilog(L_SERVER, "Excess parameters (%d) for command 'NICK' from %s.", | |
329 | parc, client_p->name); | |
330 | rb_snprintf(squitreason, sizeof squitreason, | |
331 | "Excess parameters (%d) to %s command, expecting %d", | |
332 | parc, "NICK", 9); | |
333 | exit_client(client_p, client_p, client_p, squitreason); | |
334 | return 0; | |
335 | } | |
336 | ||
337 | /* if nicks empty, erroneous, or too long, kill */ | |
338 | if(!clean_nick(parv[1], 0)) | |
339 | { | |
340 | bad_nickname(client_p, parv[1]); | |
341 | return 0; | |
342 | } | |
343 | ||
344 | /* invalid username or host? */ | |
345 | if(!clean_username(parv[5]) || !clean_host(parv[6])) | |
346 | { | |
347 | ServerStats.is_kill++; | |
348 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
349 | "Bad user@host: %s@%s From: %s(via %s)", | |
350 | parv[5], parv[6], parv[7], client_p->name); | |
351 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.name, parv[1], me.name); | |
352 | return 0; | |
353 | } | |
354 | ||
355 | /* check the length of the clients gecos */ | |
356 | if(strlen(parv[8]) > REALLEN) | |
357 | { | |
358 | char *s = LOCAL_COPY(parv[8]); | |
359 | /* why exactly do we care? --fl */ | |
360 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
361 | "Long realname from server %s for %s", parv[7], parv[1]); | |
362 | ||
363 | s[REALLEN] = '\0'; | |
364 | parv[8] = s; | |
365 | } | |
366 | ||
367 | newts = atol(parv[3]); | |
368 | ||
369 | target_p = find_named_client(parv[1]); | |
370 | ||
371 | /* if the nick doesnt exist, allow it and process like normal */ | |
372 | if(target_p == NULL) | |
373 | { | |
374 | register_client(client_p, NULL, parv[1], newts, parc, parv); | |
375 | } | |
376 | else if(IsUnknown(target_p)) | |
377 | { | |
378 | exit_client(NULL, target_p, &me, "Overridden"); | |
379 | register_client(client_p, NULL, parv[1], newts, parc, parv); | |
380 | } | |
381 | else if(target_p == source_p) | |
382 | { | |
383 | /* client changing case of nick */ | |
384 | if(strcmp(target_p->name, parv[1])) | |
385 | register_client(client_p, NULL, parv[1], newts, parc, parv); | |
386 | } | |
387 | /* we've got a collision! */ | |
388 | else | |
389 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
390 | newts, parv[1], NULL); | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | /* ms_uid() | |
396 | * parv[1] - nickname | |
397 | * parv[2] - hops | |
398 | * parv[3] - TS | |
399 | * parv[4] - umodes | |
400 | * parv[5] - username | |
401 | * parv[6] - hostname | |
402 | * parv[7] - IP | |
403 | * parv[8] - UID | |
404 | * parv[9] - gecos | |
405 | */ | |
406 | static int | |
407 | ms_uid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
408 | { | |
409 | struct Client *target_p; | |
410 | time_t newts = 0; | |
411 | char squitreason[120]; | |
412 | ||
413 | newts = atol(parv[3]); | |
414 | ||
415 | if(parc != 10) | |
416 | { | |
417 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
418 | "Dropping server %s due to (invalid) command 'UID' " | |
419 | "with %d arguments (expecting 10)", client_p->name, parc); | |
420 | ilog(L_SERVER, "Excess parameters (%d) for command 'UID' from %s.", | |
421 | parc, client_p->name); | |
422 | rb_snprintf(squitreason, sizeof squitreason, | |
423 | "Excess parameters (%d) to %s command, expecting %d", | |
424 | parc, "UID", 10); | |
425 | exit_client(client_p, client_p, client_p, squitreason); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | /* if nicks erroneous, or too long, kill */ | |
430 | if(!clean_nick(parv[1], 0)) | |
431 | { | |
432 | bad_nickname(client_p, parv[1]); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | if(!clean_uid(parv[8])) | |
437 | { | |
438 | rb_snprintf(squitreason, sizeof squitreason, | |
439 | "Invalid UID %s for nick %s on %s", | |
440 | parv[8], parv[1], source_p->name); | |
441 | exit_client(client_p, client_p, client_p, squitreason); | |
442 | return 0; | |
443 | } | |
444 | ||
445 | if(!clean_username(parv[5]) || !clean_host(parv[6])) | |
446 | { | |
447 | ServerStats.is_kill++; | |
448 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
449 | "Bad user@host: %s@%s From: %s(via %s)", | |
450 | parv[5], parv[6], source_p->name, client_p->name); | |
451 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | /* check length of clients gecos */ | |
456 | if(strlen(parv[9]) > REALLEN) | |
457 | { | |
458 | char *s = LOCAL_COPY(parv[9]); | |
459 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
460 | parv[0], parv[1]); | |
461 | s[REALLEN] = '\0'; | |
462 | parv[9] = s; | |
463 | } | |
464 | ||
465 | target_p = find_named_client(parv[1]); | |
466 | ||
467 | if(target_p == NULL) | |
468 | { | |
469 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
470 | } | |
471 | else if(IsUnknown(target_p)) | |
472 | { | |
473 | exit_client(NULL, target_p, &me, "Overridden"); | |
474 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
475 | } | |
476 | /* we've got a collision! */ | |
477 | else | |
478 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
479 | newts, parv[1], parv[8]); | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | /* ms_euid() | |
485 | * parv[1] - nickname | |
486 | * parv[2] - hops | |
487 | * parv[3] - TS | |
488 | * parv[4] - umodes | |
489 | * parv[5] - username | |
490 | * parv[6] - hostname | |
491 | * parv[7] - IP | |
492 | * parv[8] - UID | |
493 | * parv[9] - realhost | |
494 | * parv[10] - account | |
495 | * parv[11] - gecos | |
496 | */ | |
497 | static int | |
498 | ms_euid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
499 | { | |
500 | struct Client *target_p; | |
501 | time_t newts = 0; | |
502 | char squitreason[120]; | |
503 | ||
504 | newts = atol(parv[3]); | |
505 | ||
506 | if(parc != 12) | |
507 | { | |
508 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
509 | "Dropping server %s due to (invalid) command 'EUID' " | |
510 | "with %d arguments (expecting 12)", client_p->name, parc); | |
511 | ilog(L_SERVER, "Excess parameters (%d) for command 'EUID' from %s.", | |
512 | parc, client_p->name); | |
513 | rb_snprintf(squitreason, sizeof squitreason, | |
514 | "Excess parameters (%d) to %s command, expecting %d", | |
515 | parc, "EUID", 12); | |
516 | exit_client(client_p, client_p, client_p, squitreason); | |
517 | return 0; | |
518 | } | |
519 | ||
520 | /* if nicks erroneous, or too long, kill */ | |
521 | if(!clean_nick(parv[1], 0)) | |
522 | { | |
523 | bad_nickname(client_p, parv[1]); | |
524 | return 0; | |
525 | } | |
526 | ||
527 | if(!clean_uid(parv[8])) | |
528 | { | |
529 | rb_snprintf(squitreason, sizeof squitreason, | |
530 | "Invalid UID %s for nick %s on %s", | |
531 | parv[8], parv[1], source_p->name); | |
532 | exit_client(client_p, client_p, client_p, squitreason); | |
533 | return 0; | |
534 | } | |
535 | ||
536 | if(!clean_username(parv[5]) || !clean_host(parv[6])) | |
537 | { | |
538 | ServerStats.is_kill++; | |
539 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
540 | "Bad user@host: %s@%s From: %s(via %s)", | |
541 | parv[5], parv[6], source_p->name, client_p->name); | |
542 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
543 | return 0; | |
544 | } | |
545 | ||
546 | if(strcmp(parv[9], "*") && !clean_host(parv[9])) | |
547 | { | |
548 | ServerStats.is_kill++; | |
549 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
550 | "Bad realhost: %s From: %s(via %s)", | |
551 | parv[9], source_p->name, client_p->name); | |
552 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
553 | return 0; | |
554 | } | |
555 | ||
556 | /* check length of clients gecos */ | |
557 | if(strlen(parv[11]) > REALLEN) | |
558 | { | |
559 | char *s = LOCAL_COPY(parv[11]); | |
560 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
561 | parv[0], parv[1]); | |
562 | s[REALLEN] = '\0'; | |
563 | parv[11] = s; | |
564 | } | |
565 | ||
566 | target_p = find_named_client(parv[1]); | |
567 | ||
568 | if(target_p == NULL) | |
569 | { | |
570 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
571 | } | |
572 | else if(IsUnknown(target_p)) | |
573 | { | |
574 | exit_client(NULL, target_p, &me, "Overridden"); | |
575 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
576 | } | |
577 | /* we've got a collision! */ | |
578 | else | |
579 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
580 | newts, parv[1], parv[8]); | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
585 | /* ms_save() | |
586 | * parv[1] - UID | |
587 | * parv[2] - TS | |
588 | */ | |
589 | static int | |
590 | ms_save(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
591 | { | |
592 | struct Client *target_p; | |
593 | ||
594 | target_p = find_id(parv[1]); | |
595 | if (target_p == NULL) | |
596 | return 0; | |
597 | if (!IsPerson(target_p)) | |
598 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
599 | "Ignored SAVE message for non-person %s from %s", | |
600 | target_p->name, source_p->name); | |
601 | else if (IsDigit(target_p->name[0])) | |
602 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
603 | "Ignored noop SAVE message for %s from %s", | |
604 | target_p->name, source_p->name); | |
605 | else if (target_p->tsinfo == atol(parv[2])) | |
606 | save_user(client_p, source_p, target_p); | |
607 | else | |
608 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
609 | "Ignored SAVE message for %s from %s", | |
610 | target_p->name, source_p->name); | |
611 | return 0; | |
612 | } | |
613 | ||
614 | /* clean_nick() | |
615 | * | |
616 | * input - nickname to check | |
617 | * output - 0 if erroneous, else 1 | |
618 | * side effects - | |
619 | */ | |
620 | static int | |
621 | clean_nick(const char *nick, int loc_client) | |
622 | { | |
623 | int len = 0; | |
624 | ||
625 | /* nicks cant start with a digit or -, and must have a length */ | |
626 | if(*nick == '-' || *nick == '\0') | |
627 | return 0; | |
628 | ||
629 | if(loc_client && IsDigit(*nick)) | |
630 | return 0; | |
631 | ||
632 | for(; *nick; nick++) | |
633 | { | |
634 | len++; | |
635 | if(!IsNickChar(*nick)) | |
636 | return 0; | |
637 | } | |
638 | ||
639 | /* nicklen is +1 */ | |
640 | if(len >= NICKLEN) | |
641 | return 0; | |
642 | ||
643 | return 1; | |
644 | } | |
645 | ||
646 | /* clean_username() | |
647 | * | |
648 | * input - username to check | |
649 | * output - 0 if erroneous, else 0 | |
650 | * side effects - | |
651 | */ | |
652 | static int | |
653 | clean_username(const char *username) | |
654 | { | |
655 | int len = 0; | |
656 | ||
657 | for(; *username; username++) | |
658 | { | |
659 | len++; | |
660 | ||
661 | if(!IsUserChar(*username)) | |
662 | return 0; | |
663 | } | |
664 | ||
665 | if(len > USERLEN) | |
666 | return 0; | |
667 | ||
668 | return 1; | |
669 | } | |
670 | ||
671 | /* clean_host() | |
672 | * | |
673 | * input - host to check | |
674 | * output - 0 if erroneous, else 0 | |
675 | * side effects - | |
676 | */ | |
677 | static int | |
678 | clean_host(const char *host) | |
679 | { | |
680 | int len = 0; | |
681 | ||
682 | for(; *host; host++) | |
683 | { | |
684 | len++; | |
685 | ||
686 | if(!IsHostChar(*host)) | |
687 | return 0; | |
688 | } | |
689 | ||
690 | if(len > HOSTLEN) | |
691 | return 0; | |
692 | ||
693 | return 1; | |
694 | } | |
695 | ||
696 | static int | |
697 | clean_uid(const char *uid) | |
698 | { | |
699 | int len = 1; | |
700 | ||
701 | if(!IsDigit(*uid++)) | |
702 | return 0; | |
703 | ||
704 | for(; *uid; uid++) | |
705 | { | |
706 | len++; | |
707 | ||
708 | if(!IsIdChar(*uid)) | |
709 | return 0; | |
710 | } | |
711 | ||
712 | if(len != IDLEN - 1) | |
713 | return 0; | |
714 | ||
715 | return 1; | |
716 | } | |
717 | ||
718 | static void | |
719 | set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick) | |
720 | { | |
721 | char buf[USERLEN + 1]; | |
722 | char note[NICKLEN + 10]; | |
723 | ||
724 | /* This had to be copied here to avoid problems.. */ | |
725 | source_p->tsinfo = rb_current_time(); | |
726 | if(source_p->name[0]) | |
727 | del_from_client_hash(source_p->name, source_p); | |
728 | ||
729 | strcpy(source_p->name, nick); | |
730 | add_to_client_hash(nick, source_p); | |
731 | ||
732 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); | |
733 | rb_note(client_p->localClient->F, note); | |
734 | ||
735 | if(source_p->flags & FLAGS_SENTUSER) | |
736 | { | |
737 | rb_strlcpy(buf, source_p->username, sizeof(buf)); | |
738 | ||
739 | /* got user, heres nick. */ | |
740 | register_local_user(client_p, source_p, buf); | |
741 | ||
742 | } | |
743 | } | |
744 | ||
745 | static void | |
746 | change_local_nick(struct Client *client_p, struct Client *source_p, | |
747 | char *nick, int dosend) | |
748 | { | |
749 | struct Client *target_p; | |
750 | rb_dlink_node *ptr, *next_ptr; | |
751 | struct Channel *chptr; | |
752 | char note[NICKLEN + 10]; | |
753 | int samenick; | |
754 | ||
755 | if (dosend) | |
756 | { | |
757 | chptr = find_bannickchange_channel(source_p); | |
758 | if (chptr != NULL) | |
759 | { | |
760 | sendto_one_numeric(source_p, ERR_BANNICKCHANGE, | |
761 | form_str(ERR_BANNICKCHANGE), | |
762 | nick, chptr->chname); | |
763 | return; | |
764 | } | |
765 | if((source_p->localClient->last_nick_change + ConfigFileEntry.max_nick_time) < rb_current_time()) | |
766 | source_p->localClient->number_of_nick_changes = 0; | |
767 | ||
768 | source_p->localClient->last_nick_change = rb_current_time(); | |
769 | source_p->localClient->number_of_nick_changes++; | |
770 | ||
771 | if(ConfigFileEntry.anti_nick_flood && !IsOper(source_p) && | |
772 | source_p->localClient->number_of_nick_changes > ConfigFileEntry.max_nick_changes) | |
773 | { | |
774 | sendto_one(source_p, form_str(ERR_NICKTOOFAST), | |
775 | me.name, source_p->name, source_p->name, | |
776 | nick, ConfigFileEntry.max_nick_time); | |
777 | return; | |
778 | } | |
779 | } | |
780 | ||
781 | samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
782 | ||
783 | /* dont reset TS if theyre just changing case of nick */ | |
784 | if(!samenick) | |
785 | { | |
786 | /* force the TS to increase -- jilles */ | |
787 | if (source_p->tsinfo >= rb_current_time()) | |
788 | source_p->tsinfo++; | |
789 | else | |
790 | source_p->tsinfo = rb_current_time(); | |
791 | monitor_signoff(source_p); | |
792 | /* we only do bancache for local users -- jilles */ | |
793 | if(source_p->user) | |
794 | invalidate_bancache_user(source_p); | |
795 | } | |
796 | ||
797 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
798 | "Nick change: From %s to %s [%s@%s]", | |
799 | source_p->name, nick, source_p->username, source_p->host); | |
800 | ||
801 | /* send the nick change to the users channels */ | |
802 | sendto_common_channels_local(source_p, ":%s!%s@%s NICK :%s", | |
803 | source_p->name, source_p->username, source_p->host, nick); | |
804 | ||
805 | /* send the nick change to servers.. */ | |
806 | if(source_p->user) | |
807 | { | |
808 | add_history(source_p, 1); | |
809 | ||
810 | if (dosend) | |
811 | { | |
812 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
813 | use_id(source_p), nick, (long) source_p->tsinfo); | |
814 | } | |
815 | } | |
816 | ||
817 | /* Finally, add to hash */ | |
818 | del_from_client_hash(source_p->name, source_p); | |
819 | strcpy(source_p->name, nick); | |
820 | add_to_client_hash(nick, source_p); | |
821 | ||
822 | if(!samenick) | |
823 | monitor_signon(source_p); | |
824 | ||
825 | /* Make sure everyone that has this client on its accept list | |
826 | * loses that reference. | |
827 | */ | |
828 | /* we used to call del_all_accepts() here, but theres no real reason | |
829 | * to clear a clients own list of accepted clients. So just remove | |
830 | * them from everyone elses list --anfl | |
831 | */ | |
832 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->on_allow_list.head) | |
833 | { | |
834 | target_p = ptr->data; | |
835 | ||
836 | rb_dlinkFindDestroy(source_p, &target_p->localClient->allow_list); | |
837 | rb_dlinkDestroy(ptr, &source_p->on_allow_list); | |
838 | } | |
839 | ||
840 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); | |
841 | rb_note(client_p->localClient->F, note); | |
842 | ||
843 | return; | |
844 | } | |
845 | ||
846 | /* | |
847 | * change_remote_nick() | |
848 | */ | |
849 | static int | |
850 | change_remote_nick(struct Client *client_p, struct Client *source_p, | |
851 | time_t newts, const char *nick, int dosend) | |
852 | { | |
853 | struct nd_entry *nd; | |
854 | int samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
855 | ||
856 | /* client changing their nick - dont reset ts if its same */ | |
857 | if(!samenick) | |
858 | { | |
859 | source_p->tsinfo = newts ? newts : rb_current_time(); | |
860 | monitor_signoff(source_p); | |
861 | } | |
862 | ||
863 | sendto_common_channels_local(source_p, ":%s!%s@%s NICK :%s", | |
864 | source_p->name, source_p->username, source_p->host, nick); | |
865 | ||
866 | if(source_p->user) | |
867 | { | |
868 | add_history(source_p, 1); | |
869 | if (dosend) | |
870 | { | |
871 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
872 | use_id(source_p), nick, (long) source_p->tsinfo); | |
873 | } | |
874 | } | |
875 | ||
876 | del_from_client_hash(source_p->name, source_p); | |
877 | ||
878 | /* invalidate nick delay when a remote client uses the nick.. */ | |
879 | if((nd = irc_dictionary_retrieve(nd_dict, nick))) | |
880 | free_nd_entry(nd); | |
881 | ||
882 | strcpy(source_p->name, nick); | |
883 | add_to_client_hash(nick, source_p); | |
884 | ||
885 | if(!samenick) | |
886 | monitor_signon(source_p); | |
887 | ||
888 | /* remove all accepts pointing to the client */ | |
889 | del_all_accepts(source_p); | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | static int | |
895 | perform_nick_collides(struct Client *source_p, struct Client *client_p, | |
896 | struct Client *target_p, int parc, const char *parv[], | |
897 | time_t newts, const char *nick, const char *uid) | |
898 | { | |
899 | int sameuser; | |
900 | int use_save; | |
901 | const char *action; | |
902 | ||
903 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
904 | uid != NULL && can_save(source_p); | |
905 | action = use_save ? "saved" : "killed"; | |
906 | ||
907 | /* if we dont have a ts, or their TS's are the same, kill both */ | |
908 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) | |
909 | { | |
910 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
911 | "Nick collision on %s(%s <- %s)(both %s)", | |
912 | target_p->name, target_p->from->name, client_p->name, action); | |
913 | ||
914 | if (use_save) | |
915 | { | |
916 | save_user(&me, &me, target_p); | |
917 | ServerStats.is_save++; | |
918 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
919 | uid, (long)newts); | |
920 | register_client(client_p, source_p, | |
921 | uid, SAVE_NICKTS, parc, parv); | |
922 | } | |
923 | else | |
924 | { | |
925 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
926 | form_str(ERR_NICKCOLLISION), target_p->name); | |
927 | ||
928 | /* if the new client being introduced has a UID, we need to | |
929 | * issue a KILL for it.. | |
930 | */ | |
931 | if(uid) | |
932 | sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", | |
933 | me.id, uid, me.name); | |
934 | ||
935 | /* we then need to KILL the old client everywhere */ | |
936 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (new))", me.name); | |
937 | ServerStats.is_kill++; | |
938 | ||
939 | target_p->flags |= FLAGS_KILLED; | |
940 | exit_client(client_p, target_p, &me, "Nick collision (new)"); | |
941 | } | |
942 | return 0; | |
943 | } | |
944 | /* the timestamps are different */ | |
945 | else | |
946 | { | |
947 | sameuser = (target_p->user) && !irccmp(target_p->username, parv[5]) | |
948 | && !irccmp(target_p->host, parv[6]); | |
949 | ||
950 | if((sameuser && newts < target_p->tsinfo) || | |
951 | (!sameuser && newts > target_p->tsinfo)) | |
952 | { | |
953 | /* if we have a UID, then we need to issue a KILL, | |
954 | * otherwise we do nothing and hope that the other | |
955 | * client will collide it.. | |
956 | */ | |
957 | if (use_save) | |
958 | { | |
959 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
960 | uid, (long)newts); | |
961 | register_client(client_p, source_p, | |
962 | uid, SAVE_NICKTS, parc, parv); | |
963 | } | |
964 | else if(uid) | |
965 | sendto_one(client_p, | |
966 | ":%s KILL %s :%s (Nick collision (new))", | |
967 | me.id, uid, me.name); | |
968 | return 0; | |
969 | } | |
970 | else | |
971 | { | |
972 | if(sameuser) | |
973 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
974 | "Nick collision on %s(%s <- %s)(older %s)", | |
975 | target_p->name, target_p->from->name, | |
976 | client_p->name, action); | |
977 | else | |
978 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
979 | "Nick collision on %s(%s <- %s)(newer %s)", | |
980 | target_p->name, target_p->from->name, | |
981 | client_p->name, action); | |
982 | ||
983 | if (use_save) | |
984 | { | |
985 | ServerStats.is_save++; | |
986 | save_user(&me, &me, target_p); | |
987 | } | |
988 | else | |
989 | { | |
990 | ServerStats.is_kill++; | |
991 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
992 | form_str(ERR_NICKCOLLISION), target_p->name); | |
993 | ||
994 | /* now we just need to kill the existing client */ | |
995 | kill_client_serv_butone(client_p, target_p, | |
996 | "%s (Nick collision (new))", me.name); | |
997 | ||
998 | target_p->flags |= FLAGS_KILLED; | |
999 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1000 | } | |
1001 | ||
1002 | register_client(client_p, parc >= 10 ? source_p : NULL, | |
1003 | nick, newts, parc, parv); | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | ||
1011 | static int | |
1012 | perform_nickchange_collides(struct Client *source_p, struct Client *client_p, | |
1013 | struct Client *target_p, int parc, | |
1014 | const char *parv[], time_t newts, const char *nick) | |
1015 | { | |
1016 | int sameuser; | |
1017 | int use_save; | |
1018 | const char *action; | |
1019 | ||
1020 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
1021 | can_save(source_p); | |
1022 | action = use_save ? "saved" : "killed"; | |
1023 | ||
1024 | /* its a client changing nick and causing a collide */ | |
1025 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo) || !source_p->user) | |
1026 | { | |
1027 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1028 | "Nick change collision from %s to %s(%s <- %s)(both %s)", | |
1029 | source_p->name, target_p->name, target_p->from->name, | |
1030 | client_p->name, action); | |
1031 | ||
1032 | if (use_save) | |
1033 | { | |
1034 | ServerStats.is_save += 2; | |
1035 | save_user(&me, &me, target_p); | |
1036 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
1037 | source_p->id, (long)newts); | |
1038 | /* don't send a redundant nick change */ | |
1039 | if (!IsDigit(source_p->name[0])) | |
1040 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | ServerStats.is_kill++; | |
1045 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1046 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1047 | ||
1048 | kill_client_serv_butone(NULL, source_p, "%s (Nick change collision)", me.name); | |
1049 | ||
1050 | ServerStats.is_kill++; | |
1051 | ||
1052 | kill_client_serv_butone(NULL, target_p, "%s (Nick change collision)", me.name); | |
1053 | ||
1054 | target_p->flags |= FLAGS_KILLED; | |
1055 | exit_client(NULL, target_p, &me, "Nick collision(new)"); | |
1056 | source_p->flags |= FLAGS_KILLED; | |
1057 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
1058 | } | |
1059 | return 0; | |
1060 | } | |
1061 | else | |
1062 | { | |
1063 | sameuser = !irccmp(target_p->username, source_p->username) && | |
1064 | !irccmp(target_p->host, source_p->host); | |
1065 | ||
1066 | if((sameuser && newts < target_p->tsinfo) || | |
1067 | (!sameuser && newts > target_p->tsinfo)) | |
1068 | { | |
1069 | if(sameuser) | |
1070 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1071 | "Nick change collision from %s to %s(%s <- %s)(older %s)", | |
1072 | source_p->name, target_p->name, | |
1073 | target_p->from->name, client_p->name, action); | |
1074 | else | |
1075 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1076 | "Nick change collision from %s to %s(%s <- %s)(newer %s)", | |
1077 | source_p->name, target_p->name, | |
1078 | target_p->from->name, client_p->name, action); | |
1079 | ||
1080 | if (use_save) | |
1081 | { | |
1082 | ServerStats.is_save++; | |
1083 | /* can't broadcast a SAVE because the | |
1084 | * nickchange has happened at client_p | |
1085 | * but not in other directions -- jilles */ | |
1086 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
1087 | source_p->id, (long)newts); | |
1088 | /* send a :<id> NICK <id> <ts> (!) */ | |
1089 | if (!IsDigit(source_p->name[0])) | |
1090 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); | |
1091 | } | |
1092 | else | |
1093 | { | |
1094 | ServerStats.is_kill++; | |
1095 | ||
1096 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1097 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1098 | ||
1099 | /* kill the client issuing the nickchange */ | |
1100 | kill_client_serv_butone(client_p, source_p, | |
1101 | "%s (Nick change collision)", me.name); | |
1102 | ||
1103 | source_p->flags |= FLAGS_KILLED; | |
1104 | ||
1105 | if(sameuser) | |
1106 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
1107 | else | |
1108 | exit_client(client_p, source_p, &me, "Nick collision(new)"); | |
1109 | } | |
1110 | return 0; | |
1111 | } | |
1112 | else | |
1113 | { | |
1114 | if(sameuser) | |
1115 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1116 | "Nick collision on %s(%s <- %s)(older %s)", | |
1117 | target_p->name, target_p->from->name, | |
1118 | client_p->name, action); | |
1119 | else | |
1120 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1121 | "Nick collision on %s(%s <- %s)(newer %s)", | |
1122 | target_p->name, target_p->from->name, | |
1123 | client_p->name, action); | |
1124 | ||
1125 | if (use_save) | |
1126 | { | |
1127 | ServerStats.is_save++; | |
1128 | save_user(&me, &me, target_p); | |
1129 | } | |
1130 | else | |
1131 | { | |
1132 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1133 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1134 | ||
1135 | /* kill the client who existed before hand */ | |
1136 | kill_client_serv_butone(client_p, target_p, "%s (Nick collision)", me.name); | |
1137 | ||
1138 | ServerStats.is_kill++; | |
1139 | ||
1140 | target_p->flags |= FLAGS_KILLED; | |
1141 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | change_remote_nick(client_p, source_p, newts, nick, 1); | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | static int | |
1152 | register_client(struct Client *client_p, struct Client *server, | |
1153 | const char *nick, time_t newts, int parc, const char *parv[]) | |
1154 | { | |
1155 | struct Client *source_p; | |
1156 | struct User *user; | |
1157 | struct nd_entry *nd; | |
1158 | const char *m; | |
1159 | int flag; | |
1160 | ||
1161 | if(server == NULL) | |
1162 | { | |
1163 | if((server = find_server(NULL, parv[7])) == NULL) | |
1164 | { | |
1165 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1166 | "Ghost killed: %s on invalid server %s", | |
1167 | nick, parv[7]); | |
1168 | sendto_one(client_p, ":%s KILL %s :%s (Server doesn't exist)", | |
1169 | get_id(&me, client_p), nick, me.name); | |
1170 | return 0; | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | source_p = make_client(client_p); | |
1175 | user = make_user(source_p); | |
1176 | rb_dlinkAddTail(source_p, &source_p->node, &global_client_list); | |
1177 | ||
1178 | source_p->hopcount = atoi(parv[2]); | |
1179 | source_p->tsinfo = newts; | |
1180 | ||
1181 | strcpy(source_p->name, nick); | |
1182 | rb_strlcpy(source_p->username, parv[5], sizeof(source_p->username)); | |
1183 | rb_strlcpy(source_p->host, parv[6], sizeof(source_p->host)); | |
1184 | rb_strlcpy(source_p->orighost, source_p->host, sizeof(source_p->orighost)); | |
1185 | ||
1186 | if(parc == 12) | |
1187 | { | |
1188 | rb_strlcpy(source_p->info, parv[11], sizeof(source_p->info)); | |
1189 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1190 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
1191 | add_to_id_hash(source_p->id, source_p); | |
1192 | if (strcmp(parv[9], "*")) | |
1193 | { | |
1194 | rb_strlcpy(source_p->orighost, parv[9], sizeof(source_p->orighost)); | |
1195 | if (irccmp(source_p->host, source_p->orighost)) | |
1196 | SetDynSpoof(source_p); | |
1197 | } | |
1198 | if (strcmp(parv[10], "*")) | |
1199 | rb_strlcpy(source_p->user->suser, parv[10], sizeof(source_p->user->suser)); | |
1200 | } | |
1201 | else if(parc == 10) | |
1202 | { | |
1203 | rb_strlcpy(source_p->info, parv[9], sizeof(source_p->info)); | |
1204 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1205 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
1206 | add_to_id_hash(source_p->id, source_p); | |
1207 | } | |
1208 | else | |
1209 | { | |
1210 | rb_strlcpy(source_p->info, parv[8], sizeof(source_p->info)); | |
1211 | } | |
1212 | ||
1213 | /* remove any nd entries for this nick */ | |
1214 | if((nd = irc_dictionary_retrieve(nd_dict, nick))) | |
1215 | free_nd_entry(nd); | |
1216 | ||
1217 | add_to_client_hash(nick, source_p); | |
1218 | add_to_hostname_hash(source_p->orighost, source_p); | |
1219 | monitor_signon(source_p); | |
1220 | ||
1221 | m = &parv[4][1]; | |
1222 | while(*m) | |
1223 | { | |
1224 | flag = user_modes[(unsigned char) *m]; | |
1225 | ||
1226 | if(flag & UMODE_SERVICE) | |
1227 | { | |
1228 | int hit = 0; | |
1229 | rb_dlink_node *ptr; | |
1230 | ||
1231 | RB_DLINK_FOREACH(ptr, service_list.head) | |
1232 | { | |
1233 | if(!irccmp((const char *) ptr->data, server->name)) | |
1234 | { | |
1235 | hit++; | |
1236 | break; | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | if(!hit) | |
1241 | { | |
1242 | m++; | |
1243 | continue; | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | /* increment +i count if theyre invis */ | |
1248 | if(!(source_p->umodes & UMODE_INVISIBLE) && (flag & UMODE_INVISIBLE)) | |
1249 | Count.invisi++; | |
1250 | ||
1251 | /* increment opered count if theyre opered */ | |
1252 | if(!(source_p->umodes & UMODE_OPER) && (flag & UMODE_OPER)) | |
1253 | Count.oper++; | |
1254 | ||
1255 | source_p->umodes |= flag; | |
1256 | m++; | |
1257 | } | |
1258 | ||
1259 | if(IsOper(source_p) && !IsService(source_p)) | |
1260 | rb_dlinkAddAlloc(source_p, &oper_list); | |
1261 | ||
1262 | SetRemoteClient(source_p); | |
1263 | ||
1264 | if(++Count.total > Count.max_tot) | |
1265 | Count.max_tot = Count.total; | |
1266 | ||
1267 | source_p->servptr = server; | |
1268 | ||
1269 | rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users); | |
1270 | ||
1271 | /* fake direction */ | |
1272 | if(source_p->servptr->from != source_p->from) | |
1273 | { | |
1274 | struct Client *target_p = source_p->servptr->from; | |
1275 | ||
1276 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
1277 | "Bad User [%s] :%s USER %s@%s %s, != %s[%s]", | |
1278 | client_p->name, source_p->name, | |
1279 | source_p->username, source_p->host, | |
1280 | server->name, target_p->name, target_p->from->name); | |
1281 | kill_client(client_p, source_p, | |
1282 | "%s (NICK from wrong direction (%s != %s))", | |
1283 | me.name, server->name, target_p->from->name); | |
1284 | source_p->flags |= FLAGS_KILLED; | |
1285 | return exit_client(source_p, source_p, &me, "USER server wrong direction"); | |
1286 | } | |
1287 | ||
1288 | call_hook(h_new_remote_user, source_p); | |
1289 | ||
1290 | return (introduce_client(client_p, source_p, user, nick, parc == 12)); | |
1291 | } | |
1292 | ||
1293 | /* Check if we can do SAVE. target_p can be a client to save or a | |
1294 | * server introducing a client -- jilles */ | |
1295 | static int | |
1296 | can_save(struct Client *target_p) | |
1297 | { | |
1298 | struct Client *serv_p; | |
1299 | ||
1300 | if (MyClient(target_p)) | |
1301 | return 1; | |
1302 | if (!has_id(target_p)) | |
1303 | return 0; | |
1304 | serv_p = IsServer(target_p) ? target_p : target_p->servptr; | |
1305 | while (serv_p != NULL && serv_p != &me) | |
1306 | { | |
1307 | if (!(serv_p->serv->caps & CAP_SAVE)) | |
1308 | return 0; | |
1309 | serv_p = serv_p->servptr; | |
1310 | } | |
1311 | return serv_p == &me; | |
1312 | } | |
1313 | ||
1314 | static void | |
1315 | save_user(struct Client *client_p, struct Client *source_p, | |
1316 | struct Client *target_p) | |
1317 | { | |
1318 | if (!MyConnect(target_p) && (!has_id(target_p) || !IsCapable(target_p->from, CAP_SAVE))) | |
1319 | { | |
1320 | /* This shouldn't happen */ | |
1321 | /* Note we only need SAVE support in this direction */ | |
1322 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1323 | "Killed %s!%s@%s for nick collision detected by %s (%s does not support SAVE)", | |
1324 | target_p->name, target_p->username, target_p->host, source_p->name, target_p->from->name); | |
1325 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (no SAVE support))", me.name); | |
1326 | ServerStats.is_kill++; | |
1327 | ||
1328 | target_p->flags |= FLAGS_KILLED; | |
1329 | (void) exit_client(NULL, target_p, &me, "Nick collision (no SAVE support)"); | |
1330 | return; | |
1331 | } | |
1332 | sendto_server(client_p, NULL, CAP_SAVE|CAP_TS6, NOCAPS, ":%s SAVE %s %ld", | |
1333 | source_p->id, target_p->id, (long)target_p->tsinfo); | |
1334 | sendto_server(client_p, NULL, CAP_TS6, CAP_SAVE, ":%s NICK %s :%ld", | |
1335 | target_p->id, target_p->id, (long)SAVE_NICKTS); | |
1336 | if (!IsMe(client_p)) | |
1337 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1338 | "Received SAVE message for %s from %s", | |
1339 | target_p->name, source_p->name); | |
1340 | if (MyClient(target_p)) | |
1341 | { | |
1342 | sendto_one_numeric(target_p, RPL_SAVENICK, | |
1343 | form_str(RPL_SAVENICK), target_p->id); | |
1344 | change_local_nick(target_p, target_p, target_p->id, 0); | |
1345 | target_p->tsinfo = SAVE_NICKTS; | |
1346 | } | |
1347 | else | |
1348 | change_remote_nick(target_p, target_p, SAVE_NICKTS, target_p->id, 0); | |
1349 | } | |
1350 | ||
1351 | static void bad_nickname(struct Client *client_p, const char *nick) | |
1352 | { | |
1353 | char squitreason[100]; | |
1354 | ||
1355 | sendto_wallops_flags(UMODE_WALLOP, &me, | |
1356 | "Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1357 | client_p->name, nick); | |
1358 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
1359 | ":%s WALLOPS :Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1360 | me.id, client_p->name, nick); | |
1361 | ||
1362 | rb_snprintf(squitreason, sizeof squitreason, | |
1363 | "Bad nickname introduced [%s]", nick); | |
1364 | exit_client(client_p, client_p, &me, squitreason); | |
1365 | } |