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