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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 1885 2006-08-28 10:09:50Z 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 | static int mr_nick(struct Client *, struct Client *, int, const char **); | |
52 | static int m_nick(struct Client *, struct Client *, int, const char **); | |
53 | static int mc_nick(struct Client *, struct Client *, int, const char **); | |
54 | static int ms_nick(struct Client *, struct Client *, int, const char **); | |
55 | static int ms_uid(struct Client *, struct Client *, int, const char **); | |
56 | static int ms_euid(struct Client *, struct Client *, int, const char **); | |
57 | static int ms_save(struct Client *, struct Client *, int, const char **); | |
58 | static int can_save(struct Client *); | |
59 | static void save_user(struct Client *, struct Client *, struct Client *); | |
60 | ||
61 | struct Message nick_msgtab = { | |
62 | "NICK", 0, 0, 0, MFLG_SLOW, | |
63 | {{mr_nick, 0}, {m_nick, 0}, {mc_nick, 3}, {ms_nick, 8}, mg_ignore, {m_nick, 0}} | |
64 | }; | |
65 | struct Message uid_msgtab = { | |
66 | "UID", 0, 0, 0, MFLG_SLOW, | |
67 | {mg_ignore, mg_ignore, mg_ignore, {ms_uid, 9}, mg_ignore, mg_ignore} | |
68 | }; | |
69 | struct Message euid_msgtab = { | |
70 | "EUID", 0, 0, 0, MFLG_SLOW, | |
71 | {mg_ignore, mg_ignore, mg_ignore, {ms_euid, 12}, mg_ignore, mg_ignore} | |
72 | }; | |
73 | struct Message save_msgtab = { | |
74 | "SAVE", 0, 0, 0, MFLG_SLOW, | |
75 | {mg_ignore, mg_ignore, mg_ignore, {ms_save, 3}, mg_ignore, mg_ignore} | |
76 | }; | |
77 | ||
78 | mapi_clist_av1 nick_clist[] = { &nick_msgtab, &uid_msgtab, &euid_msgtab, | |
79 | &save_msgtab, NULL }; | |
80 | ||
81 | DECLARE_MODULE_AV1(nick, NULL, NULL, nick_clist, NULL, NULL, "$Revision: 1885 $"); | |
82 | ||
83 | static int change_remote_nick(struct Client *, struct Client *, time_t, | |
84 | const char *, int); | |
85 | ||
86 | static int clean_nick(const char *, int loc_client); | |
87 | static int clean_username(const char *); | |
88 | static int clean_host(const char *); | |
89 | static int clean_uid(const char *uid); | |
90 | ||
91 | static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick); | |
92 | static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int); | |
93 | static int register_client(struct Client *client_p, struct Client *server, | |
94 | const char *nick, time_t newts, int parc, const char *parv[]); | |
95 | ||
96 | static int perform_nick_collides(struct Client *, struct Client *, | |
97 | struct Client *, int, const char **, | |
98 | time_t, const char *, const char *); | |
99 | static int perform_nickchange_collides(struct Client *, struct Client *, | |
100 | struct Client *, int, const char **, time_t, const char *); | |
101 | ||
102 | /* mr_nick() | |
103 | * parv[0] = sender prefix | |
104 | * parv[1] = nickname | |
105 | */ | |
106 | static int | |
107 | mr_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
108 | { | |
109 | struct Client *target_p; | |
110 | char nick[NICKLEN]; | |
111 | char *s; | |
112 | ||
113 | if (strlen(client_p->id) == 3) | |
114 | { | |
115 | exit_client(client_p, client_p, client_p, "Mixing client and server protocol"); | |
116 | return 0; | |
117 | } | |
118 | ||
119 | if(parc < 2 || EmptyString(parv[1]) || (parv[1][0] == '~')) | |
120 | { | |
121 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
122 | me.name, EmptyString(source_p->name) ? "*" : source_p->name); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | /* due to the scandinavian origins, (~ being uppercase of ^) and ~ | |
127 | * being disallowed as a nick char, we need to chop the first ~ | |
128 | * instead of just erroring. | |
129 | */ | |
130 | if((s = strchr(parv[1], '~'))) | |
131 | *s = '\0'; | |
132 | ||
133 | /* copy the nick and terminate it */ | |
134 | strlcpy(nick, parv[1], sizeof(nick)); | |
135 | ||
136 | /* check the nickname is ok */ | |
137 | if(!clean_nick(nick, 1)) | |
138 | { | |
139 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
140 | me.name, EmptyString(parv[0]) ? "*" : parv[0], parv[1]); | |
141 | return 0; | |
142 | } | |
143 | ||
144 | /* check if the nick is resv'd */ | |
145 | if(find_nick_resv(nick)) | |
146 | { | |
147 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
148 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | if(hash_find_nd(nick)) | |
153 | { | |
154 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
155 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
156 | return 0; | |
157 | } | |
158 | ||
159 | if((target_p = find_named_client(nick)) == NULL) | |
160 | set_initial_nick(client_p, source_p, nick); | |
161 | else if(source_p == target_p) | |
162 | strcpy(source_p->name, nick); | |
163 | else | |
164 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, "*", nick); | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | /* m_nick() | |
170 | * parv[0] = sender prefix | |
171 | * parv[1] = nickname | |
172 | */ | |
173 | static int | |
174 | m_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
175 | { | |
176 | struct Client *target_p; | |
177 | char nick[NICKLEN]; | |
178 | char *s; | |
179 | ||
180 | if(parc < 2 || EmptyString(parv[1]) || (parv[1][0] == '~')) | |
181 | { | |
182 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); | |
183 | return 0; | |
184 | } | |
185 | ||
186 | /* due to the scandinavian origins, (~ being uppercase of ^) and ~ | |
187 | * being disallowed as a nick char, we need to chop the first ~ | |
188 | * instead of just erroring. | |
189 | */ | |
190 | if((s = strchr(parv[1], '~'))) | |
191 | *s = '\0'; | |
192 | ||
193 | /* mark end of grace period, to prevent nickflooding */ | |
194 | if(!IsFloodDone(source_p)) | |
195 | flood_endgrace(source_p); | |
196 | ||
197 | /* terminate nick to NICKLEN, we dont want clean_nick() to error! */ | |
198 | strlcpy(nick, parv[1], sizeof(nick)); | |
199 | ||
200 | /* check the nickname is ok */ | |
201 | if(!clean_nick(nick, 1)) | |
202 | { | |
203 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, parv[0], nick); | |
204 | return 0; | |
205 | } | |
206 | ||
207 | if(!IsExemptResv(source_p) && find_nick_resv(nick)) | |
208 | { | |
209 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); | |
210 | return 0; | |
211 | } | |
212 | ||
213 | if(hash_find_nd(nick)) | |
214 | { | |
215 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
216 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
217 | return 0; | |
218 | } | |
219 | ||
220 | if((target_p = find_named_client(nick))) | |
221 | { | |
222 | /* If(target_p == source_p) the client is changing nicks between | |
223 | * equivalent nicknames ie: [nick] -> {nick} | |
224 | */ | |
225 | if(target_p == source_p) | |
226 | { | |
227 | /* check the nick isnt exactly the same */ | |
228 | if(strcmp(target_p->name, nick)) | |
229 | change_local_nick(client_p, source_p, nick, 1); | |
230 | ||
231 | } | |
232 | ||
233 | /* drop unregged client */ | |
234 | else if(IsUnknown(target_p)) | |
235 | { | |
236 | exit_client(NULL, target_p, &me, "Overridden"); | |
237 | change_local_nick(client_p, source_p, nick, 1); | |
238 | } | |
239 | else | |
240 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, parv[0], nick); | |
241 | ||
242 | return 0; | |
243 | } | |
244 | else | |
245 | change_local_nick(client_p, source_p, nick, 1); | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | /* ms_nick() | |
251 | * | |
252 | * server -> server nick change | |
253 | * parv[0] = sender prefix | |
254 | * parv[1] = nickname | |
255 | * parv[2] = TS when nick change | |
256 | * | |
257 | * server introducing new nick | |
258 | * parv[0] = sender prefix | |
259 | * parv[1] = nickname | |
260 | * parv[2] = hop count | |
261 | * parv[3] = TS | |
262 | * parv[4] = umode | |
263 | * parv[5] = username | |
264 | * parv[6] = hostname | |
265 | * parv[7] = server | |
266 | * parv[8] = ircname | |
267 | */ | |
268 | static int | |
269 | mc_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
270 | { | |
271 | struct Client *target_p; | |
272 | time_t newts = 0; | |
273 | ||
274 | /* if nicks erroneous, or too long, kill */ | |
275 | if(!clean_nick(parv[1], 0)) | |
276 | { | |
277 | ServerStats->is_kill++; | |
278 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
279 | "Bad Nick: %s From: %s(via %s)", | |
280 | parv[1], source_p->user->server, client_p->name); | |
281 | sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", me.name, parv[1], me.name); | |
282 | ||
283 | /* bad nick change, issue kill for the old nick to the rest | |
284 | * of the network. | |
285 | */ | |
286 | kill_client_serv_butone(client_p, source_p, "%s (Bad Nickname)", me.name); | |
287 | source_p->flags |= FLAGS_KILLED; | |
288 | exit_client(client_p, source_p, &me, "Bad Nickname"); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | newts = atol(parv[2]); | |
293 | target_p = find_named_client(parv[1]); | |
294 | ||
295 | /* if the nick doesnt exist, allow it and process like normal */ | |
296 | if(target_p == NULL) | |
297 | { | |
298 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
299 | } | |
300 | else if(IsUnknown(target_p)) | |
301 | { | |
302 | exit_client(NULL, target_p, &me, "Overridden"); | |
303 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
304 | } | |
305 | else if(target_p == source_p) | |
306 | { | |
307 | /* client changing case of nick */ | |
308 | if(strcmp(target_p->name, parv[1])) | |
309 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
310 | } | |
311 | /* we've got a collision! */ | |
312 | else | |
313 | perform_nickchange_collides(source_p, client_p, target_p, | |
314 | parc, parv, newts, parv[1]); | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | static int | |
320 | ms_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
321 | { | |
322 | struct Client *target_p; | |
323 | time_t newts = 0; | |
324 | ||
325 | if(parc != 9) | |
326 | { | |
327 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
328 | "Dropping server %s due to (invalid) command 'NICK' " | |
329 | "with %d arguments (expecting 9)", client_p->name, parc); | |
330 | ilog(L_SERVER, "Excess parameters (%d) for command 'NICK' from %s.", | |
331 | parc, client_p->name); | |
332 | exit_client(client_p, client_p, client_p, "Excess parameters to NICK command"); | |
333 | return 0; | |
334 | } | |
335 | ||
336 | /* if nicks empty, erroneous, or too long, kill */ | |
337 | if(!clean_nick(parv[1], 0)) | |
338 | { | |
339 | ServerStats->is_kill++; | |
340 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
341 | "Bad Nick: %s From: %s(via %s)", | |
342 | parv[1], parv[7], client_p->name); | |
343 | sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", me.name, parv[1], me.name); | |
344 | return 0; | |
345 | } | |
346 | ||
347 | /* invalid username or host? */ | |
348 | if(!clean_username(parv[5]) || !clean_host(parv[6])) | |
349 | { | |
350 | ServerStats->is_kill++; | |
351 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
352 | "Bad user@host: %s@%s From: %s(via %s)", | |
353 | parv[5], parv[6], parv[7], client_p->name); | |
354 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.name, parv[1], me.name); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | /* check the length of the clients gecos */ | |
359 | if(strlen(parv[8]) > REALLEN) | |
360 | { | |
361 | char *s = LOCAL_COPY(parv[8]); | |
362 | /* why exactly do we care? --fl */ | |
363 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
364 | "Long realname from server %s for %s", parv[7], parv[1]); | |
365 | ||
366 | s[REALLEN] = '\0'; | |
367 | parv[8] = s; | |
368 | } | |
369 | ||
370 | newts = atol(parv[3]); | |
371 | ||
372 | target_p = find_named_client(parv[1]); | |
373 | ||
374 | /* if the nick doesnt exist, allow it and process like normal */ | |
375 | if(target_p == NULL) | |
376 | { | |
377 | register_client(client_p, NULL, parv[1], newts, parc, parv); | |
378 | } | |
379 | else if(IsUnknown(target_p)) | |
380 | { | |
381 | exit_client(NULL, target_p, &me, "Overridden"); | |
382 | register_client(client_p, NULL, parv[1], newts, parc, parv); | |
383 | } | |
384 | else if(target_p == source_p) | |
385 | { | |
386 | /* client changing case of nick */ | |
387 | if(strcmp(target_p->name, parv[1])) | |
388 | register_client(client_p, NULL, parv[1], newts, parc, parv); | |
389 | } | |
390 | /* we've got a collision! */ | |
391 | else | |
392 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
393 | newts, parv[1], NULL); | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | /* ms_uid() | |
399 | * parv[1] - nickname | |
400 | * parv[2] - hops | |
401 | * parv[3] - TS | |
402 | * parv[4] - umodes | |
403 | * parv[5] - username | |
404 | * parv[6] - hostname | |
405 | * parv[7] - IP | |
406 | * parv[8] - UID | |
407 | * parv[9] - gecos | |
408 | */ | |
409 | static int | |
410 | ms_uid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
411 | { | |
412 | struct Client *target_p; | |
413 | time_t newts = 0; | |
414 | ||
415 | newts = atol(parv[3]); | |
416 | ||
417 | if(parc != 10) | |
418 | { | |
419 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
420 | "Dropping server %s due to (invalid) command 'UID' " | |
421 | "with %d arguments (expecting 10)", client_p->name, parc); | |
422 | ilog(L_SERVER, "Excess parameters (%d) for command 'UID' from %s.", | |
423 | parc, client_p->name); | |
424 | exit_client(client_p, client_p, client_p, "Excess parameters to UID command"); | |
425 | return 0; | |
426 | } | |
427 | ||
428 | /* if nicks erroneous, or too long, kill */ | |
429 | if(!clean_nick(parv[1], 0)) | |
430 | { | |
431 | ServerStats->is_kill++; | |
432 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
433 | "Bad Nick: %s From: %s(via %s)", | |
434 | parv[1], source_p->name, client_p->name); | |
435 | sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", me.id, parv[8], me.name); | |
436 | return 0; | |
437 | } | |
438 | ||
439 | if(!clean_username(parv[5]) || !clean_host(parv[6])) | |
440 | { | |
441 | ServerStats->is_kill++; | |
442 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
443 | "Bad user@host: %s@%s From: %s(via %s)", | |
444 | parv[5], parv[6], source_p->name, client_p->name); | |
445 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
446 | return 0; | |
447 | } | |
448 | ||
449 | if(!clean_uid(parv[8])) | |
450 | { | |
451 | ServerStats->is_kill++; | |
452 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
453 | "Bad UID: %s From: %s(via %s)", | |
454 | parv[8], source_p->name, client_p->name); | |
455 | sendto_one(client_p, ":%s KILL %s :%s (Bad UID)", me.id, parv[8], me.name); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | /* check length of clients gecos */ | |
460 | if(strlen(parv[9]) > REALLEN) | |
461 | { | |
462 | char *s = LOCAL_COPY(parv[9]); | |
463 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
464 | parv[0], parv[1]); | |
465 | s[REALLEN] = '\0'; | |
466 | parv[9] = s; | |
467 | } | |
468 | ||
469 | target_p = find_named_client(parv[1]); | |
470 | ||
471 | if(target_p == NULL) | |
472 | { | |
473 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
474 | } | |
475 | else if(IsUnknown(target_p)) | |
476 | { | |
477 | exit_client(NULL, target_p, &me, "Overridden"); | |
478 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
479 | } | |
480 | /* we've got a collision! */ | |
481 | else | |
482 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
483 | newts, parv[1], parv[8]); | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | /* ms_euid() | |
489 | * parv[1] - nickname | |
490 | * parv[2] - hops | |
491 | * parv[3] - TS | |
492 | * parv[4] - umodes | |
493 | * parv[5] - username | |
494 | * parv[6] - hostname | |
495 | * parv[7] - IP | |
496 | * parv[8] - UID | |
497 | * parv[9] - realhost | |
498 | * parv[10] - account | |
499 | * parv[11] - gecos | |
500 | */ | |
501 | static int | |
502 | ms_euid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
503 | { | |
504 | struct Client *target_p; | |
505 | time_t newts = 0; | |
506 | ||
507 | newts = atol(parv[3]); | |
508 | ||
509 | if(parc != 12) | |
510 | { | |
511 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
512 | "Dropping server %s due to (invalid) command 'EUID' " | |
513 | "with %d arguments (expecting 12)", client_p->name, parc); | |
514 | ilog(L_SERVER, "Excess parameters (%d) for command 'EUID' from %s.", | |
515 | parc, client_p->name); | |
516 | exit_client(client_p, client_p, client_p, "Excess parameters to EUID command"); | |
517 | return 0; | |
518 | } | |
519 | ||
520 | /* if nicks erroneous, or too long, kill */ | |
521 | if(!clean_nick(parv[1], 0)) | |
522 | { | |
523 | ServerStats->is_kill++; | |
524 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
525 | "Bad Nick: %s From: %s(via %s)", | |
526 | parv[1], source_p->name, client_p->name); | |
527 | sendto_one(client_p, ":%s KILL %s :%s (Bad Nickname)", me.id, parv[8], me.name); | |
528 | return 0; | |
529 | } | |
530 | ||
531 | if(!clean_username(parv[5]) || !clean_host(parv[6])) | |
532 | { | |
533 | ServerStats->is_kill++; | |
534 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
535 | "Bad user@host: %s@%s From: %s(via %s)", | |
536 | parv[5], parv[6], source_p->name, client_p->name); | |
537 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
538 | return 0; | |
539 | } | |
540 | ||
541 | if(!clean_uid(parv[8])) | |
542 | { | |
543 | ServerStats->is_kill++; | |
544 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
545 | "Bad UID: %s From: %s(via %s)", | |
546 | parv[8], source_p->name, client_p->name); | |
547 | sendto_one(client_p, ":%s KILL %s :%s (Bad UID)", me.id, parv[8], me.name); | |
548 | return 0; | |
549 | } | |
550 | ||
551 | if(strcmp(parv[9], "*") && !clean_host(parv[9])) | |
552 | { | |
553 | ServerStats->is_kill++; | |
554 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
555 | "Bad realhost: %s From: %s(via %s)", | |
556 | parv[9], source_p->name, client_p->name); | |
557 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
558 | return 0; | |
559 | } | |
560 | ||
561 | /* check length of clients gecos */ | |
562 | if(strlen(parv[11]) > REALLEN) | |
563 | { | |
564 | char *s = LOCAL_COPY(parv[11]); | |
565 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
566 | parv[0], parv[1]); | |
567 | s[REALLEN] = '\0'; | |
568 | parv[11] = s; | |
569 | } | |
570 | ||
571 | target_p = find_named_client(parv[1]); | |
572 | ||
573 | if(target_p == NULL) | |
574 | { | |
575 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
576 | } | |
577 | else if(IsUnknown(target_p)) | |
578 | { | |
579 | exit_client(NULL, target_p, &me, "Overridden"); | |
580 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
581 | } | |
582 | /* we've got a collision! */ | |
583 | else | |
584 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
585 | newts, parv[1], parv[8]); | |
586 | ||
587 | return 0; | |
588 | } | |
589 | ||
590 | /* ms_save() | |
591 | * parv[1] - UID | |
592 | * parv[2] - TS | |
593 | */ | |
594 | static int | |
595 | ms_save(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
596 | { | |
597 | struct Client *target_p; | |
598 | ||
599 | target_p = find_id(parv[1]); | |
600 | if (target_p == NULL) | |
601 | return 0; | |
602 | if (!IsPerson(target_p)) | |
603 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
604 | "Ignored SAVE message for non-person %s from %s", | |
605 | target_p->name, source_p->name); | |
606 | else if (IsDigit(target_p->name[0])) | |
607 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
608 | "Ignored noop SAVE message for %s from %s", | |
609 | target_p->name, source_p->name); | |
610 | else if (target_p->tsinfo == atol(parv[2])) | |
611 | save_user(client_p, source_p, target_p); | |
612 | else | |
613 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
614 | "Ignored SAVE message for %s from %s", | |
615 | target_p->name, source_p->name); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | /* clean_nick() | |
620 | * | |
621 | * input - nickname to check | |
622 | * output - 0 if erroneous, else 1 | |
623 | * side effects - | |
624 | */ | |
625 | static int | |
626 | clean_nick(const char *nick, int loc_client) | |
627 | { | |
628 | int len = 0; | |
629 | ||
630 | /* nicks cant start with a digit or -, and must have a length */ | |
631 | if(*nick == '-' || *nick == '\0') | |
632 | return 0; | |
633 | ||
634 | if(loc_client && IsDigit(*nick)) | |
635 | return 0; | |
636 | ||
637 | for(; *nick; nick++) | |
638 | { | |
639 | len++; | |
640 | if(!IsNickChar(*nick)) | |
641 | return 0; | |
642 | } | |
643 | ||
644 | /* nicklen is +1 */ | |
645 | if(len >= NICKLEN) | |
646 | return 0; | |
647 | ||
648 | return 1; | |
649 | } | |
650 | ||
651 | /* clean_username() | |
652 | * | |
653 | * input - username to check | |
654 | * output - 0 if erroneous, else 0 | |
655 | * side effects - | |
656 | */ | |
657 | static int | |
658 | clean_username(const char *username) | |
659 | { | |
660 | int len = 0; | |
661 | ||
662 | for(; *username; username++) | |
663 | { | |
664 | len++; | |
665 | ||
666 | if(!IsUserChar(*username)) | |
667 | return 0; | |
668 | } | |
669 | ||
670 | if(len > USERLEN) | |
671 | return 0; | |
672 | ||
673 | return 1; | |
674 | } | |
675 | ||
676 | /* clean_host() | |
677 | * | |
678 | * input - host to check | |
679 | * output - 0 if erroneous, else 0 | |
680 | * side effects - | |
681 | */ | |
682 | static int | |
683 | clean_host(const char *host) | |
684 | { | |
685 | int len = 0; | |
686 | ||
687 | for(; *host; host++) | |
688 | { | |
689 | len++; | |
690 | ||
691 | if(!IsHostChar(*host)) | |
692 | return 0; | |
693 | } | |
694 | ||
695 | if(len > HOSTLEN) | |
696 | return 0; | |
697 | ||
698 | return 1; | |
699 | } | |
700 | ||
701 | static int | |
702 | clean_uid(const char *uid) | |
703 | { | |
704 | int len = 1; | |
705 | ||
706 | if(!IsDigit(*uid++)) | |
707 | return 0; | |
708 | ||
709 | for(; *uid; uid++) | |
710 | { | |
711 | len++; | |
712 | ||
713 | if(!IsIdChar(*uid)) | |
714 | return 0; | |
715 | } | |
716 | ||
717 | if(len != IDLEN - 1) | |
718 | return 0; | |
719 | ||
720 | return 1; | |
721 | } | |
722 | ||
723 | static void | |
724 | set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick) | |
725 | { | |
726 | char buf[USERLEN + 1]; | |
727 | ||
728 | /* This had to be copied here to avoid problems.. */ | |
729 | source_p->tsinfo = CurrentTime; | |
730 | if(source_p->name[0]) | |
731 | del_from_client_hash(source_p->name, source_p); | |
732 | ||
733 | strcpy(source_p->name, nick); | |
734 | add_to_client_hash(nick, source_p); | |
735 | ||
736 | /* fd_desc is long enough */ | |
737 | comm_note(client_p->localClient->fd, "Nick: %s", nick); | |
738 | ||
739 | if(source_p->flags & FLAGS_SENTUSER) | |
740 | { | |
741 | strlcpy(buf, source_p->username, sizeof(buf)); | |
742 | ||
743 | /* got user, heres nick. */ | |
744 | register_local_user(client_p, source_p, buf); | |
745 | ||
746 | } | |
747 | } | |
748 | ||
749 | static void | |
750 | change_local_nick(struct Client *client_p, struct Client *source_p, | |
751 | char *nick, int dosend) | |
752 | { | |
753 | struct Client *target_p; | |
754 | dlink_node *ptr, *next_ptr; | |
755 | struct Channel *chptr; | |
756 | int samenick; | |
757 | ||
758 | if (dosend) | |
759 | { | |
760 | chptr = find_bannickchange_channel(source_p); | |
761 | if (chptr != NULL) | |
762 | { | |
763 | sendto_one_numeric(source_p, ERR_BANNICKCHANGE, | |
764 | form_str(ERR_BANNICKCHANGE), | |
765 | nick, chptr->chname); | |
766 | return; | |
767 | } | |
768 | if((source_p->localClient->last_nick_change + ConfigFileEntry.max_nick_time) < CurrentTime) | |
769 | source_p->localClient->number_of_nick_changes = 0; | |
770 | ||
771 | source_p->localClient->last_nick_change = CurrentTime; | |
772 | source_p->localClient->number_of_nick_changes++; | |
773 | ||
774 | if(ConfigFileEntry.anti_nick_flood && !IsOper(source_p) && | |
775 | source_p->localClient->number_of_nick_changes > ConfigFileEntry.max_nick_changes) | |
776 | { | |
777 | sendto_one(source_p, form_str(ERR_NICKTOOFAST), | |
778 | me.name, source_p->name, source_p->name, | |
779 | nick, ConfigFileEntry.max_nick_time); | |
780 | return; | |
781 | } | |
782 | } | |
783 | ||
784 | samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
785 | ||
786 | /* dont reset TS if theyre just changing case of nick */ | |
787 | if(!samenick) | |
788 | { | |
789 | source_p->tsinfo = CurrentTime; | |
790 | monitor_signoff(source_p); | |
791 | /* we only do bancache for local users -- jilles */ | |
792 | if(source_p->user) | |
793 | invalidate_bancache_user(source_p); | |
794 | } | |
795 | ||
796 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
797 | "Nick change: From %s to %s [%s@%s]", | |
798 | source_p->name, nick, source_p->username, source_p->host); | |
799 | ||
800 | /* send the nick change to the users channels */ | |
801 | sendto_common_channels_local(source_p, ":%s!%s@%s NICK :%s", | |
802 | source_p->name, source_p->username, source_p->host, nick); | |
803 | ||
804 | /* send the nick change to servers.. */ | |
805 | if(source_p->user) | |
806 | { | |
807 | add_history(source_p, 1); | |
808 | ||
809 | if (dosend) | |
810 | { | |
811 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
812 | use_id(source_p), nick, (long) source_p->tsinfo); | |
813 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, ":%s NICK %s :%ld", | |
814 | source_p->name, nick, (long) source_p->tsinfo); | |
815 | } | |
816 | } | |
817 | ||
818 | /* Finally, add to hash */ | |
819 | del_from_client_hash(source_p->name, source_p); | |
820 | strcpy(source_p->name, nick); | |
821 | add_to_client_hash(nick, source_p); | |
822 | ||
823 | if(!samenick) | |
824 | monitor_signon(source_p); | |
825 | ||
826 | /* Make sure everyone that has this client on its accept list | |
827 | * loses that reference. | |
828 | */ | |
829 | /* we used to call del_all_accepts() here, but theres no real reason | |
830 | * to clear a clients own list of accepted clients. So just remove | |
831 | * them from everyone elses list --anfl | |
832 | */ | |
833 | DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->on_allow_list.head) | |
834 | { | |
835 | target_p = ptr->data; | |
836 | ||
837 | dlinkFindDestroy(source_p, &target_p->localClient->allow_list); | |
838 | dlinkDestroy(ptr, &source_p->on_allow_list); | |
839 | } | |
840 | ||
841 | /* fd_desc is long enough */ | |
842 | comm_note(client_p->localClient->fd, "Nick: %s", nick); | |
843 | ||
844 | return; | |
845 | } | |
846 | ||
847 | /* | |
848 | * change_remote_nick() | |
849 | */ | |
850 | static int | |
851 | change_remote_nick(struct Client *client_p, struct Client *source_p, | |
852 | time_t newts, const char *nick, int dosend) | |
853 | { | |
854 | struct nd_entry *nd; | |
855 | int samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
856 | ||
857 | /* client changing their nick - dont reset ts if its same */ | |
858 | if(!samenick) | |
859 | { | |
860 | source_p->tsinfo = newts ? newts : CurrentTime; | |
861 | monitor_signoff(source_p); | |
862 | } | |
863 | ||
864 | sendto_common_channels_local(source_p, ":%s!%s@%s NICK :%s", | |
865 | source_p->name, source_p->username, source_p->host, nick); | |
866 | ||
867 | if(source_p->user) | |
868 | { | |
869 | add_history(source_p, 1); | |
870 | if (dosend) | |
871 | { | |
872 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
873 | use_id(source_p), nick, (long) source_p->tsinfo); | |
874 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, ":%s NICK %s :%ld", | |
875 | source_p->name, nick, (long) source_p->tsinfo); | |
876 | } | |
877 | } | |
878 | ||
879 | del_from_client_hash(source_p->name, source_p); | |
880 | ||
881 | /* invalidate nick delay when a remote client uses the nick.. */ | |
882 | if((nd = hash_find_nd(nick))) | |
883 | free_nd_entry(nd); | |
884 | ||
885 | strcpy(source_p->name, nick); | |
886 | add_to_client_hash(nick, source_p); | |
887 | ||
888 | if(!samenick) | |
889 | monitor_signon(source_p); | |
890 | ||
891 | /* remove all accepts pointing to the client */ | |
892 | del_all_accepts(source_p); | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | static int | |
898 | perform_nick_collides(struct Client *source_p, struct Client *client_p, | |
899 | struct Client *target_p, int parc, const char *parv[], | |
900 | time_t newts, const char *nick, const char *uid) | |
901 | { | |
902 | int sameuser; | |
903 | int use_save; | |
904 | const char *action; | |
905 | ||
906 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
907 | uid != NULL && can_save(source_p); | |
908 | action = use_save ? "saved" : "killed"; | |
909 | ||
910 | /* if we dont have a ts, or their TS's are the same, kill both */ | |
911 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) | |
912 | { | |
913 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
914 | "Nick collision on %s(%s <- %s)(both %s)", | |
915 | target_p->name, target_p->from->name, client_p->name, action); | |
916 | ||
917 | if (use_save) | |
918 | { | |
919 | save_user(&me, &me, target_p); | |
920 | ServerStats->is_save++; | |
921 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
922 | uid, (long)newts); | |
923 | register_client(client_p, source_p, | |
924 | uid, newts, parc, parv); | |
925 | } | |
926 | else | |
927 | { | |
928 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
929 | form_str(ERR_NICKCOLLISION), target_p->name); | |
930 | ||
931 | /* if the new client being introduced has a UID, we need to | |
932 | * issue a KILL for it.. | |
933 | */ | |
934 | if(uid) | |
935 | sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", | |
936 | me.id, uid, me.name); | |
937 | ||
938 | /* we then need to KILL the old client everywhere */ | |
939 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (new))", me.name); | |
940 | ServerStats->is_kill++; | |
941 | ||
942 | target_p->flags |= FLAGS_KILLED; | |
943 | exit_client(client_p, target_p, &me, "Nick collision (new)"); | |
944 | } | |
945 | return 0; | |
946 | } | |
947 | /* the timestamps are different */ | |
948 | else | |
949 | { | |
950 | sameuser = (target_p->user) && !irccmp(target_p->username, parv[5]) | |
951 | && !irccmp(target_p->host, parv[6]); | |
952 | ||
953 | if((sameuser && newts < target_p->tsinfo) || | |
954 | (!sameuser && newts > target_p->tsinfo)) | |
955 | { | |
956 | /* if we have a UID, then we need to issue a KILL, | |
957 | * otherwise we do nothing and hope that the other | |
958 | * client will collide it.. | |
959 | */ | |
960 | if (use_save) | |
961 | { | |
962 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
963 | uid, (long)newts); | |
964 | register_client(client_p, source_p, | |
965 | uid, newts, parc, parv); | |
966 | } | |
967 | else if(uid) | |
968 | sendto_one(client_p, | |
969 | ":%s KILL %s :%s (Nick collision (new))", | |
970 | me.id, uid, me.name); | |
971 | return 0; | |
972 | } | |
973 | else | |
974 | { | |
975 | if(sameuser) | |
976 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
977 | "Nick collision on %s(%s <- %s)(older %s)", | |
978 | target_p->name, target_p->from->name, | |
979 | client_p->name, action); | |
980 | else | |
981 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
982 | "Nick collision on %s(%s <- %s)(newer %s)", | |
983 | target_p->name, target_p->from->name, | |
984 | client_p->name, action); | |
985 | ||
986 | if (use_save) | |
987 | { | |
988 | ServerStats->is_save++; | |
989 | save_user(&me, &me, target_p); | |
990 | } | |
991 | else | |
992 | { | |
993 | ServerStats->is_kill++; | |
994 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
995 | form_str(ERR_NICKCOLLISION), target_p->name); | |
996 | ||
997 | /* now we just need to kill the existing client */ | |
998 | kill_client_serv_butone(client_p, target_p, | |
999 | "%s (Nick collision (new))", me.name); | |
1000 | ||
1001 | target_p->flags |= FLAGS_KILLED; | |
1002 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1003 | } | |
1004 | ||
1005 | register_client(client_p, parc >= 10 ? source_p : NULL, | |
1006 | nick, newts, parc, parv); | |
1007 | ||
1008 | return 0; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | ||
1014 | static int | |
1015 | perform_nickchange_collides(struct Client *source_p, struct Client *client_p, | |
1016 | struct Client *target_p, int parc, | |
1017 | const char *parv[], time_t newts, const char *nick) | |
1018 | { | |
1019 | int sameuser; | |
1020 | int use_save; | |
1021 | const char *action; | |
1022 | ||
1023 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
1024 | can_save(source_p); | |
1025 | action = use_save ? "saved" : "killed"; | |
1026 | ||
1027 | /* its a client changing nick and causing a collide */ | |
1028 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo) || !source_p->user) | |
1029 | { | |
1030 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1031 | "Nick change collision from %s to %s(%s <- %s)(both %s)", | |
1032 | source_p->name, target_p->name, target_p->from->name, | |
1033 | client_p->name, action); | |
1034 | ||
1035 | if (use_save) | |
1036 | { | |
1037 | ServerStats->is_save += 2; | |
1038 | save_user(&me, &me, target_p); | |
1039 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
1040 | source_p->id, (long)newts); | |
1041 | /* don't send a redundant nick change */ | |
1042 | if (!IsDigit(source_p->name[0])) | |
1043 | change_remote_nick(client_p, source_p, CurrentTime, source_p->id, 1); | |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | ServerStats->is_kill++; | |
1048 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1049 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1050 | ||
1051 | kill_client_serv_butone(NULL, source_p, "%s (Nick change collision)", me.name); | |
1052 | ||
1053 | ServerStats->is_kill++; | |
1054 | ||
1055 | kill_client_serv_butone(NULL, target_p, "%s (Nick change collision)", me.name); | |
1056 | ||
1057 | target_p->flags |= FLAGS_KILLED; | |
1058 | exit_client(NULL, target_p, &me, "Nick collision(new)"); | |
1059 | source_p->flags |= FLAGS_KILLED; | |
1060 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
1061 | } | |
1062 | return 0; | |
1063 | } | |
1064 | else | |
1065 | { | |
1066 | sameuser = !irccmp(target_p->username, source_p->username) && | |
1067 | !irccmp(target_p->host, source_p->host); | |
1068 | ||
1069 | if((sameuser && newts < target_p->tsinfo) || | |
1070 | (!sameuser && newts > target_p->tsinfo)) | |
1071 | { | |
1072 | if(sameuser) | |
1073 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1074 | "Nick change collision from %s to %s(%s <- %s)(older %s)", | |
1075 | source_p->name, target_p->name, | |
1076 | target_p->from->name, client_p->name, action); | |
1077 | else | |
1078 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1079 | "Nick change collision from %s to %s(%s <- %s)(newer %s)", | |
1080 | source_p->name, target_p->name, | |
1081 | target_p->from->name, client_p->name, action); | |
1082 | ||
1083 | if (use_save) | |
1084 | { | |
1085 | ServerStats->is_save++; | |
1086 | /* can't broadcast a SAVE because the | |
1087 | * nickchange has happened at client_p | |
1088 | * but not in other directions -- jilles */ | |
1089 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
1090 | source_p->id, (long)newts); | |
1091 | /* same CurrentTime as in save_user() */ | |
1092 | /* send a :<id> NICK <id> <ts> (!) */ | |
1093 | if (!IsDigit(source_p->name[0])) | |
1094 | change_remote_nick(client_p, source_p, CurrentTime, source_p->id, 1); | |
1095 | } | |
1096 | else | |
1097 | { | |
1098 | ServerStats->is_kill++; | |
1099 | ||
1100 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1101 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1102 | ||
1103 | /* kill the client issuing the nickchange */ | |
1104 | kill_client_serv_butone(client_p, source_p, | |
1105 | "%s (Nick change collision)", me.name); | |
1106 | ||
1107 | source_p->flags |= FLAGS_KILLED; | |
1108 | ||
1109 | if(sameuser) | |
1110 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
1111 | else | |
1112 | exit_client(client_p, source_p, &me, "Nick collision(new)"); | |
1113 | } | |
1114 | return 0; | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | if(sameuser) | |
1119 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1120 | "Nick collision on %s(%s <- %s)(older %s)", | |
1121 | target_p->name, target_p->from->name, | |
1122 | client_p->name, action); | |
1123 | else | |
1124 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1125 | "Nick collision on %s(%s <- %s)(newer %s)", | |
1126 | target_p->name, target_p->from->name, | |
1127 | client_p->name, action); | |
1128 | ||
1129 | if (use_save) | |
1130 | { | |
1131 | ServerStats->is_save++; | |
1132 | save_user(&me, &me, target_p); | |
1133 | } | |
1134 | else | |
1135 | { | |
1136 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1137 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1138 | ||
1139 | /* kill the client who existed before hand */ | |
1140 | kill_client_serv_butone(client_p, target_p, "%s (Nick collision)", me.name); | |
1141 | ||
1142 | ServerStats->is_kill++; | |
1143 | ||
1144 | target_p->flags |= FLAGS_KILLED; | |
1145 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1146 | } | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | change_remote_nick(client_p, source_p, newts, nick, 1); | |
1151 | ||
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | static int | |
1156 | register_client(struct Client *client_p, struct Client *server, | |
1157 | const char *nick, time_t newts, int parc, const char *parv[]) | |
1158 | { | |
1159 | struct Client *source_p; | |
1160 | struct User *user; | |
1161 | struct nd_entry *nd; | |
1162 | const char *m; | |
1163 | int flag; | |
1164 | ||
1165 | source_p = make_client(client_p); | |
1166 | user = make_user(source_p); | |
1167 | dlinkAddTail(source_p, &source_p->node, &global_client_list); | |
1168 | ||
1169 | source_p->hopcount = atoi(parv[2]); | |
1170 | source_p->tsinfo = newts; | |
1171 | ||
1172 | strcpy(source_p->name, nick); | |
1173 | strlcpy(source_p->username, parv[5], sizeof(source_p->username)); | |
1174 | strlcpy(source_p->host, parv[6], sizeof(source_p->host)); | |
1175 | strlcpy(source_p->orighost, source_p->host, sizeof(source_p->orighost)); | |
1176 | ||
1177 | if(parc == 12) | |
1178 | { | |
1179 | user->server = find_or_add(server->name); | |
1180 | strlcpy(source_p->info, parv[11], sizeof(source_p->info)); | |
1181 | strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1182 | strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
1183 | add_to_id_hash(source_p->id, source_p); | |
1184 | if (strcmp(parv[9], "*")) | |
1185 | { | |
1186 | strlcpy(source_p->orighost, parv[9], sizeof(source_p->orighost)); | |
1187 | if (irccmp(source_p->host, source_p->orighost)) | |
1188 | SetDynSpoof(source_p); | |
1189 | } | |
1190 | if (strcmp(parv[10], "*")) | |
1191 | strlcpy(source_p->user->suser, parv[10], sizeof(source_p->user->suser)); | |
1192 | } | |
1193 | else if(parc == 10) | |
1194 | { | |
1195 | user->server = find_or_add(server->name); | |
1196 | strlcpy(source_p->info, parv[9], sizeof(source_p->info)); | |
1197 | strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1198 | strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
1199 | add_to_id_hash(source_p->id, source_p); | |
1200 | } | |
1201 | else | |
1202 | { | |
1203 | user->server = find_or_add(parv[7]); | |
1204 | strlcpy(source_p->info, parv[8], sizeof(source_p->info)); | |
1205 | } | |
1206 | ||
1207 | /* remove any nd entries for this nick */ | |
1208 | if((nd = hash_find_nd(nick))) | |
1209 | free_nd_entry(nd); | |
1210 | ||
1211 | add_to_client_hash(nick, source_p); | |
1212 | add_to_hostname_hash(source_p->host, source_p); | |
1213 | monitor_signon(source_p); | |
1214 | ||
1215 | m = &parv[4][1]; | |
1216 | while(*m) | |
1217 | { | |
1218 | flag = user_modes[(unsigned char) *m]; | |
1219 | ||
1220 | if(flag & UMODE_SERVICE) | |
1221 | { | |
1222 | int hit = 0; | |
1223 | dlink_node *ptr; | |
1224 | ||
1225 | DLINK_FOREACH(ptr, service_list.head) | |
1226 | { | |
1227 | if(!irccmp((const char *) ptr->data, user->server)) | |
1228 | { | |
1229 | hit++; | |
1230 | break; | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | if(!hit) | |
1235 | { | |
1236 | m++; | |
1237 | continue; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | /* increment +i count if theyre invis */ | |
1242 | if(!(source_p->umodes & UMODE_INVISIBLE) && (flag & UMODE_INVISIBLE)) | |
1243 | Count.invisi++; | |
1244 | ||
1245 | /* increment opered count if theyre opered */ | |
1246 | if(!(source_p->umodes & UMODE_OPER) && (flag & UMODE_OPER)) | |
1247 | Count.oper++; | |
1248 | ||
1249 | source_p->umodes |= flag; | |
1250 | m++; | |
1251 | } | |
1252 | ||
1253 | if(IsOper(source_p) && !IsService(source_p)) | |
1254 | dlinkAddAlloc(source_p, &oper_list); | |
1255 | ||
1256 | SetRemoteClient(source_p); | |
1257 | ||
1258 | if(++Count.total > Count.max_tot) | |
1259 | Count.max_tot = Count.total; | |
1260 | ||
1261 | if(server == NULL) | |
1262 | { | |
1263 | if((source_p->servptr = find_server(NULL, user->server)) == NULL) | |
1264 | { | |
1265 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1266 | "Ghost killed: %s on invalid server %s", | |
1267 | source_p->name, user->server); | |
1268 | kill_client(client_p, source_p, "%s (Server doesn't exist)", me.name); | |
1269 | source_p->flags |= FLAGS_KILLED; | |
1270 | return exit_client(NULL, source_p, &me, "Ghosted Client"); | |
1271 | } | |
1272 | } | |
1273 | else | |
1274 | source_p->servptr = server; | |
1275 | ||
1276 | dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users); | |
1277 | ||
1278 | /* fake direction */ | |
1279 | if(source_p->servptr->from != source_p->from) | |
1280 | { | |
1281 | struct Client *target_p = source_p->servptr->from; | |
1282 | ||
1283 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
1284 | "Bad User [%s] :%s USER %s@%s %s, != %s[%s]", | |
1285 | client_p->name, source_p->name, | |
1286 | source_p->username, source_p->host, | |
1287 | user->server, target_p->name, target_p->from->name); | |
1288 | kill_client(client_p, source_p, | |
1289 | "%s (NICK from wrong direction (%s != %s))", | |
1290 | me.name, user->server, target_p->from->name); | |
1291 | source_p->flags |= FLAGS_KILLED; | |
1292 | return exit_client(source_p, source_p, &me, "USER server wrong direction"); | |
1293 | } | |
1294 | ||
1295 | call_hook(h_new_remote_user, source_p); | |
1296 | ||
1297 | return (introduce_client(client_p, source_p, user, nick, parc == 12)); | |
1298 | } | |
1299 | ||
1300 | /* Check if we can do SAVE. target_p can be a client to save or a | |
1301 | * server introducing a client -- jilles */ | |
1302 | static int | |
1303 | can_save(struct Client *target_p) | |
1304 | { | |
1305 | struct Client *serv_p; | |
1306 | ||
1307 | if (MyClient(target_p)) | |
1308 | return 1; | |
1309 | if (!has_id(target_p)) | |
1310 | return 0; | |
1311 | serv_p = IsServer(target_p) ? target_p : target_p->servptr; | |
1312 | while (serv_p != NULL && serv_p != &me) | |
1313 | { | |
1314 | if (!(serv_p->serv->caps & CAP_SAVE)) | |
1315 | return 0; | |
1316 | serv_p = serv_p->servptr; | |
1317 | } | |
1318 | return serv_p == &me; | |
1319 | } | |
1320 | ||
1321 | static void | |
1322 | save_user(struct Client *client_p, struct Client *source_p, | |
1323 | struct Client *target_p) | |
1324 | { | |
1325 | if (!MyConnect(target_p) && (!has_id(target_p) || !IsCapable(target_p->from, CAP_SAVE))) | |
1326 | { | |
1327 | /* This shouldn't happen */ | |
1328 | /* Note we only need SAVE support in this direction */ | |
1329 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1330 | "Killed %s!%s@%s for nick collision detected by %s (%s does not support SAVE)", | |
1331 | target_p->name, target_p->username, target_p->host, source_p->name, target_p->from->name); | |
1332 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (no SAVE support))", me.name); | |
1333 | ServerStats->is_kill++; | |
1334 | ||
1335 | target_p->flags |= FLAGS_KILLED; | |
1336 | (void) exit_client(NULL, target_p, &me, "Nick collision (no SAVE support)"); | |
1337 | return; | |
1338 | } | |
1339 | sendto_server(client_p, NULL, CAP_SAVE|CAP_TS6, NOCAPS, ":%s SAVE %s %ld", | |
1340 | source_p->id, target_p->id, (long)target_p->tsinfo); | |
1341 | sendto_server(client_p, NULL, CAP_TS6, CAP_SAVE, ":%s NICK %s :%ld", | |
1342 | target_p->id, target_p->id, (long)CurrentTime); | |
1343 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, ":%s NICK %s :%ld", | |
1344 | target_p->name, target_p->id, (long)CurrentTime); | |
1345 | if (!IsMe(client_p)) | |
1346 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1347 | "Received SAVE message for %s from %s", | |
1348 | target_p->name, source_p->name); | |
1349 | if (MyClient(target_p)) | |
1350 | { | |
1351 | sendto_one_numeric(target_p, RPL_SAVENICK, | |
1352 | form_str(RPL_SAVENICK), target_p->id); | |
1353 | change_local_nick(target_p, target_p, target_p->id, 0); | |
1354 | } | |
1355 | else | |
1356 | { | |
1357 | /* XXX the uid nick gets garbage TS; shouldn't matter though */ | |
1358 | change_remote_nick(target_p, target_p, CurrentTime, target_p->id, 0); | |
1359 | } | |
1360 | } |