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212380e3 AC |
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 | * | |
66b4a7ae | 24 | * $Id: m_nick.c 3518 2007-06-22 21:59:09Z jilles $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "client.h" | |
29 | #include "hash.h" | |
4562c604 | 30 | #include "match.h" |
212380e3 AC |
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" | |
4016731b | 41 | #include "logger.h" |
212380e3 AC |
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" | |
77d3d2db | 50 | #include "s_assert.h" |
212380e3 | 51 | |
3f7e0642 JT |
52 | /* Give all UID nicks the same TS. This ensures nick TS is always the same on |
53 | * all servers for each nick-user pair, also if a user with a UID nick changes | |
54 | * their nick but is collided again (the server detecting the collision will | |
55 | * not propagate the nick change further). -- jilles | |
56 | */ | |
57 | #define SAVE_NICKTS 100 | |
58 | ||
212380e3 AC |
59 | static int mr_nick(struct Client *, struct Client *, int, const char **); |
60 | static int m_nick(struct Client *, struct Client *, int, const char **); | |
61 | static int mc_nick(struct Client *, struct Client *, int, const char **); | |
62 | static int ms_nick(struct Client *, struct Client *, int, const char **); | |
63 | static int ms_uid(struct Client *, struct Client *, int, const char **); | |
64 | static int ms_euid(struct Client *, struct Client *, int, const char **); | |
65 | static int ms_save(struct Client *, struct Client *, int, const char **); | |
66 | static int can_save(struct Client *); | |
67 | static void save_user(struct Client *, struct Client *, struct Client *); | |
ad35b2cd | 68 | static void bad_nickname(struct Client *, const char *); |
212380e3 AC |
69 | |
70 | struct Message nick_msgtab = { | |
71 | "NICK", 0, 0, 0, MFLG_SLOW, | |
6c77f1f7 | 72 | {{mr_nick, 0}, {m_nick, 0}, {mc_nick, 3}, {ms_nick, 0}, mg_ignore, {m_nick, 0}} |
212380e3 AC |
73 | }; |
74 | struct Message uid_msgtab = { | |
75 | "UID", 0, 0, 0, MFLG_SLOW, | |
76 | {mg_ignore, mg_ignore, mg_ignore, {ms_uid, 9}, mg_ignore, mg_ignore} | |
77 | }; | |
78 | struct Message euid_msgtab = { | |
79 | "EUID", 0, 0, 0, MFLG_SLOW, | |
80 | {mg_ignore, mg_ignore, mg_ignore, {ms_euid, 12}, mg_ignore, mg_ignore} | |
81 | }; | |
82 | struct Message save_msgtab = { | |
83 | "SAVE", 0, 0, 0, MFLG_SLOW, | |
84 | {mg_ignore, mg_ignore, mg_ignore, {ms_save, 3}, mg_ignore, mg_ignore} | |
85 | }; | |
86 | ||
87 | mapi_clist_av1 nick_clist[] = { &nick_msgtab, &uid_msgtab, &euid_msgtab, | |
88 | &save_msgtab, NULL }; | |
89 | ||
66b4a7ae | 90 | DECLARE_MODULE_AV1(nick, NULL, NULL, nick_clist, NULL, NULL, "$Revision: 3518 $"); |
212380e3 AC |
91 | |
92 | static int change_remote_nick(struct Client *, struct Client *, time_t, | |
93 | const char *, int); | |
94 | ||
212380e3 AC |
95 | static int clean_username(const char *); |
96 | static int clean_host(const char *); | |
561d7efc | 97 | static int clean_uid(const char *uid, const char *sid); |
212380e3 AC |
98 | |
99 | static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick); | |
100 | static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int); | |
101 | static int register_client(struct Client *client_p, struct Client *server, | |
102 | const char *nick, time_t newts, int parc, const char *parv[]); | |
103 | ||
104 | static int perform_nick_collides(struct Client *, struct Client *, | |
105 | struct Client *, int, const char **, | |
106 | time_t, const char *, const char *); | |
107 | static int perform_nickchange_collides(struct Client *, struct Client *, | |
108 | struct Client *, int, const char **, time_t, const char *); | |
109 | ||
110 | /* mr_nick() | |
212380e3 AC |
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]; | |
212380e3 AC |
118 | |
119 | if (strlen(client_p->id) == 3) | |
120 | { | |
121 | exit_client(client_p, client_p, client_p, "Mixing client and server protocol"); | |
122 | return 0; | |
123 | } | |
124 | ||
fda96b89 | 125 | if(parc < 2 || EmptyString(parv[1])) |
212380e3 AC |
126 | { |
127 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
128 | me.name, EmptyString(source_p->name) ? "*" : source_p->name); | |
129 | return 0; | |
130 | } | |
131 | ||
212380e3 | 132 | /* copy the nick and terminate it */ |
b583faf9 | 133 | rb_strlcpy(nick, parv[1], ConfigFileEntry.nicklen); |
212380e3 AC |
134 | |
135 | /* check the nickname is ok */ | |
136 | if(!clean_nick(nick, 1)) | |
137 | { | |
138 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
3dfaa671 | 139 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, parv[1]); |
212380e3 AC |
140 | return 0; |
141 | } | |
142 | ||
143 | /* check if the nick is resv'd */ | |
144 | if(find_nick_resv(nick)) | |
145 | { | |
146 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
147 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
148 | return 0; | |
149 | } | |
150 | ||
b37021a4 | 151 | if(irc_dictionary_find(nd_dict, nick)) |
212380e3 AC |
152 | { |
153 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
154 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
155 | return 0; | |
156 | } | |
157 | ||
158 | if((target_p = find_named_client(nick)) == NULL) | |
159 | set_initial_nick(client_p, source_p, nick); | |
160 | else if(source_p == target_p) | |
161 | strcpy(source_p->name, nick); | |
162 | else | |
163 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, "*", nick); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | /* m_nick() | |
212380e3 AC |
169 | * parv[1] = nickname |
170 | */ | |
171 | static int | |
172 | m_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
173 | { | |
174 | struct Client *target_p; | |
175 | char nick[NICKLEN]; | |
212380e3 | 176 | |
fda96b89 | 177 | if(parc < 2 || EmptyString(parv[1])) |
212380e3 AC |
178 | { |
179 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); | |
180 | return 0; | |
181 | } | |
182 | ||
212380e3 AC |
183 | /* mark end of grace period, to prevent nickflooding */ |
184 | if(!IsFloodDone(source_p)) | |
185 | flood_endgrace(source_p); | |
186 | ||
187 | /* terminate nick to NICKLEN, we dont want clean_nick() to error! */ | |
b583faf9 | 188 | rb_strlcpy(nick, parv[1], ConfigFileEntry.nicklen); |
212380e3 AC |
189 | |
190 | /* check the nickname is ok */ | |
191 | if(!clean_nick(nick, 1)) | |
192 | { | |
3dfaa671 | 193 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); |
212380e3 AC |
194 | return 0; |
195 | } | |
196 | ||
197 | if(!IsExemptResv(source_p) && find_nick_resv(nick)) | |
198 | { | |
199 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); | |
200 | return 0; | |
201 | } | |
202 | ||
b37021a4 | 203 | if(irc_dictionary_find(nd_dict, nick)) |
212380e3 AC |
204 | { |
205 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
206 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
207 | return 0; | |
208 | } | |
209 | ||
210 | if((target_p = find_named_client(nick))) | |
211 | { | |
212 | /* If(target_p == source_p) the client is changing nicks between | |
213 | * equivalent nicknames ie: [nick] -> {nick} | |
214 | */ | |
215 | if(target_p == source_p) | |
216 | { | |
217 | /* check the nick isnt exactly the same */ | |
218 | if(strcmp(target_p->name, nick)) | |
219 | change_local_nick(client_p, source_p, nick, 1); | |
220 | ||
221 | } | |
222 | ||
223 | /* drop unregged client */ | |
224 | else if(IsUnknown(target_p)) | |
225 | { | |
226 | exit_client(NULL, target_p, &me, "Overridden"); | |
227 | change_local_nick(client_p, source_p, nick, 1); | |
228 | } | |
229 | else | |
3dfaa671 | 230 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, source_p->name, nick); |
212380e3 AC |
231 | |
232 | return 0; | |
233 | } | |
234 | else | |
235 | change_local_nick(client_p, source_p, nick, 1); | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
6c77f1f7 | 240 | /* mc_nick() |
55abcbb2 | 241 | * |
212380e3 | 242 | * server -> server nick change |
212380e3 AC |
243 | * parv[1] = nickname |
244 | * parv[2] = TS when nick change | |
212380e3 AC |
245 | */ |
246 | static int | |
247 | mc_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
248 | { | |
249 | struct Client *target_p; | |
250 | time_t newts = 0; | |
251 | ||
252 | /* if nicks erroneous, or too long, kill */ | |
253 | if(!clean_nick(parv[1], 0)) | |
254 | { | |
ad35b2cd | 255 | bad_nickname(client_p, parv[1]); |
212380e3 AC |
256 | return 0; |
257 | } | |
258 | ||
259 | newts = atol(parv[2]); | |
260 | target_p = find_named_client(parv[1]); | |
261 | ||
262 | /* if the nick doesnt exist, allow it and process like normal */ | |
263 | if(target_p == NULL) | |
264 | { | |
265 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
266 | } | |
267 | else if(IsUnknown(target_p)) | |
268 | { | |
269 | exit_client(NULL, target_p, &me, "Overridden"); | |
270 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
271 | } | |
272 | else if(target_p == source_p) | |
273 | { | |
274 | /* client changing case of nick */ | |
275 | if(strcmp(target_p->name, parv[1])) | |
276 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
277 | } | |
278 | /* we've got a collision! */ | |
279 | else | |
280 | perform_nickchange_collides(source_p, client_p, target_p, | |
281 | parc, parv, newts, parv[1]); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int | |
287 | ms_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
288 | { | |
6c77f1f7 | 289 | const char *nick, *server; |
212380e3 | 290 | |
6c77f1f7 JT |
291 | nick = parc > 1 ? parv[1] : "?"; |
292 | server = parc > 7 ? parv[7] : "?"; | |
212380e3 | 293 | |
6c77f1f7 JT |
294 | sendto_wallops_flags(UMODE_WALLOP, &me, |
295 | "Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
296 | client_p->name, nick, server); | |
297 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
298 | ":%s WALLOPS :Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
299 | me.id, client_p->name, nick, server); | |
300 | ilog(L_SERVER, "Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
301 | client_p->name, nick, server); | |
212380e3 | 302 | |
6c77f1f7 | 303 | exit_client(client_p, client_p, &me, "TS5 nickname introduced"); |
212380e3 AC |
304 | |
305 | return 0; | |
306 | } | |
307 | ||
308 | /* ms_uid() | |
309 | * parv[1] - nickname | |
310 | * parv[2] - hops | |
311 | * parv[3] - TS | |
312 | * parv[4] - umodes | |
313 | * parv[5] - username | |
314 | * parv[6] - hostname | |
315 | * parv[7] - IP | |
316 | * parv[8] - UID | |
317 | * parv[9] - gecos | |
318 | */ | |
319 | static int | |
320 | ms_uid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
321 | { | |
322 | struct Client *target_p; | |
323 | time_t newts = 0; | |
4a5655b2 | 324 | char squitreason[120]; |
212380e3 AC |
325 | |
326 | newts = atol(parv[3]); | |
327 | ||
328 | if(parc != 10) | |
329 | { | |
330 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
331 | "Dropping server %s due to (invalid) command 'UID' " | |
332 | "with %d arguments (expecting 10)", client_p->name, parc); | |
333 | ilog(L_SERVER, "Excess parameters (%d) for command 'UID' from %s.", | |
334 | parc, client_p->name); | |
56023eb2 JT |
335 | rb_snprintf(squitreason, sizeof squitreason, |
336 | "Excess parameters (%d) to %s command, expecting %d", | |
337 | parc, "UID", 10); | |
338 | exit_client(client_p, client_p, client_p, squitreason); | |
212380e3 AC |
339 | return 0; |
340 | } | |
341 | ||
342 | /* if nicks erroneous, or too long, kill */ | |
343 | if(!clean_nick(parv[1], 0)) | |
344 | { | |
ad35b2cd | 345 | bad_nickname(client_p, parv[1]); |
212380e3 AC |
346 | return 0; |
347 | } | |
348 | ||
561d7efc | 349 | if(!clean_uid(parv[8], source_p->id)) |
212380e3 | 350 | { |
4a5655b2 | 351 | rb_snprintf(squitreason, sizeof squitreason, |
e0c7937a JT |
352 | "Invalid UID %s for nick %s on %s/%s", |
353 | parv[8], parv[1], source_p->name, source_p->id); | |
4a5655b2 | 354 | exit_client(client_p, client_p, client_p, squitreason); |
212380e3 AC |
355 | return 0; |
356 | } | |
357 | ||
4a5655b2 | 358 | if(!clean_username(parv[5]) || !clean_host(parv[6])) |
212380e3 | 359 | { |
47adde3d | 360 | ServerStats.is_kill++; |
212380e3 | 361 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
4a5655b2 JT |
362 | "Bad user@host: %s@%s From: %s(via %s)", |
363 | parv[5], parv[6], source_p->name, client_p->name); | |
364 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
212380e3 AC |
365 | return 0; |
366 | } | |
367 | ||
368 | /* check length of clients gecos */ | |
369 | if(strlen(parv[9]) > REALLEN) | |
370 | { | |
371 | char *s = LOCAL_COPY(parv[9]); | |
372 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
3dfaa671 | 373 | source_p->name, parv[1]); |
212380e3 AC |
374 | s[REALLEN] = '\0'; |
375 | parv[9] = s; | |
376 | } | |
377 | ||
378 | target_p = find_named_client(parv[1]); | |
379 | ||
380 | if(target_p == NULL) | |
381 | { | |
382 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
383 | } | |
384 | else if(IsUnknown(target_p)) | |
385 | { | |
386 | exit_client(NULL, target_p, &me, "Overridden"); | |
387 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
388 | } | |
389 | /* we've got a collision! */ | |
390 | else | |
391 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
392 | newts, parv[1], parv[8]); | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | /* ms_euid() | |
398 | * parv[1] - nickname | |
399 | * parv[2] - hops | |
400 | * parv[3] - TS | |
401 | * parv[4] - umodes | |
402 | * parv[5] - username | |
403 | * parv[6] - hostname | |
404 | * parv[7] - IP | |
405 | * parv[8] - UID | |
406 | * parv[9] - realhost | |
407 | * parv[10] - account | |
408 | * parv[11] - gecos | |
409 | */ | |
410 | static int | |
411 | ms_euid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
412 | { | |
413 | struct Client *target_p; | |
414 | time_t newts = 0; | |
4a5655b2 | 415 | char squitreason[120]; |
212380e3 AC |
416 | |
417 | newts = atol(parv[3]); | |
418 | ||
419 | if(parc != 12) | |
420 | { | |
421 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
422 | "Dropping server %s due to (invalid) command 'EUID' " | |
423 | "with %d arguments (expecting 12)", client_p->name, parc); | |
424 | ilog(L_SERVER, "Excess parameters (%d) for command 'EUID' from %s.", | |
425 | parc, client_p->name); | |
56023eb2 JT |
426 | rb_snprintf(squitreason, sizeof squitreason, |
427 | "Excess parameters (%d) to %s command, expecting %d", | |
428 | parc, "EUID", 12); | |
429 | exit_client(client_p, client_p, client_p, squitreason); | |
212380e3 AC |
430 | return 0; |
431 | } | |
432 | ||
433 | /* if nicks erroneous, or too long, kill */ | |
434 | if(!clean_nick(parv[1], 0)) | |
435 | { | |
ad35b2cd | 436 | bad_nickname(client_p, parv[1]); |
212380e3 AC |
437 | return 0; |
438 | } | |
439 | ||
561d7efc | 440 | if(!clean_uid(parv[8], source_p->id)) |
212380e3 | 441 | { |
4a5655b2 | 442 | rb_snprintf(squitreason, sizeof squitreason, |
e0c7937a JT |
443 | "Invalid UID %s for nick %s on %s/%s", |
444 | parv[8], parv[1], source_p->name, source_p->id); | |
4a5655b2 | 445 | exit_client(client_p, client_p, client_p, squitreason); |
212380e3 AC |
446 | return 0; |
447 | } | |
448 | ||
4a5655b2 | 449 | if(!clean_username(parv[5]) || !clean_host(parv[6])) |
212380e3 | 450 | { |
47adde3d | 451 | ServerStats.is_kill++; |
212380e3 | 452 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
4a5655b2 JT |
453 | "Bad user@host: %s@%s From: %s(via %s)", |
454 | parv[5], parv[6], source_p->name, client_p->name); | |
455 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
212380e3 AC |
456 | return 0; |
457 | } | |
458 | ||
459 | if(strcmp(parv[9], "*") && !clean_host(parv[9])) | |
460 | { | |
47adde3d | 461 | ServerStats.is_kill++; |
212380e3 AC |
462 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
463 | "Bad realhost: %s From: %s(via %s)", | |
464 | parv[9], source_p->name, client_p->name); | |
465 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
466 | return 0; | |
467 | } | |
468 | ||
469 | /* check length of clients gecos */ | |
470 | if(strlen(parv[11]) > REALLEN) | |
471 | { | |
472 | char *s = LOCAL_COPY(parv[11]); | |
473 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
3dfaa671 | 474 | source_p->name, parv[1]); |
212380e3 AC |
475 | s[REALLEN] = '\0'; |
476 | parv[11] = s; | |
477 | } | |
478 | ||
479 | target_p = find_named_client(parv[1]); | |
480 | ||
481 | if(target_p == NULL) | |
482 | { | |
483 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
484 | } | |
485 | else if(IsUnknown(target_p)) | |
486 | { | |
487 | exit_client(NULL, target_p, &me, "Overridden"); | |
488 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
489 | } | |
490 | /* we've got a collision! */ | |
491 | else | |
492 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
493 | newts, parv[1], parv[8]); | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
498 | /* ms_save() | |
499 | * parv[1] - UID | |
500 | * parv[2] - TS | |
501 | */ | |
502 | static int | |
503 | ms_save(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
504 | { | |
505 | struct Client *target_p; | |
506 | ||
507 | target_p = find_id(parv[1]); | |
508 | if (target_p == NULL) | |
509 | return 0; | |
510 | if (!IsPerson(target_p)) | |
511 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
512 | "Ignored SAVE message for non-person %s from %s", | |
513 | target_p->name, source_p->name); | |
514 | else if (IsDigit(target_p->name[0])) | |
515 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
516 | "Ignored noop SAVE message for %s from %s", | |
517 | target_p->name, source_p->name); | |
518 | else if (target_p->tsinfo == atol(parv[2])) | |
519 | save_user(client_p, source_p, target_p); | |
520 | else | |
521 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
522 | "Ignored SAVE message for %s from %s", | |
523 | target_p->name, source_p->name); | |
524 | return 0; | |
525 | } | |
526 | ||
212380e3 AC |
527 | /* clean_username() |
528 | * | |
529 | * input - username to check | |
530 | * output - 0 if erroneous, else 0 | |
531 | * side effects - | |
532 | */ | |
533 | static int | |
534 | clean_username(const char *username) | |
535 | { | |
536 | int len = 0; | |
537 | ||
538 | for(; *username; username++) | |
539 | { | |
540 | len++; | |
541 | ||
542 | if(!IsUserChar(*username)) | |
543 | return 0; | |
544 | } | |
545 | ||
546 | if(len > USERLEN) | |
547 | return 0; | |
548 | ||
549 | return 1; | |
550 | } | |
551 | ||
552 | /* clean_host() | |
553 | * | |
554 | * input - host to check | |
555 | * output - 0 if erroneous, else 0 | |
556 | * side effects - | |
557 | */ | |
558 | static int | |
559 | clean_host(const char *host) | |
560 | { | |
561 | int len = 0; | |
562 | ||
563 | for(; *host; host++) | |
564 | { | |
565 | len++; | |
566 | ||
567 | if(!IsHostChar(*host)) | |
568 | return 0; | |
569 | } | |
570 | ||
571 | if(len > HOSTLEN) | |
572 | return 0; | |
573 | ||
574 | return 1; | |
575 | } | |
576 | ||
577 | static int | |
561d7efc | 578 | clean_uid(const char *uid, const char *sid) |
212380e3 AC |
579 | { |
580 | int len = 1; | |
581 | ||
561d7efc JT |
582 | if(strncmp(uid, sid, strlen(sid))) |
583 | return 0; | |
584 | ||
212380e3 AC |
585 | if(!IsDigit(*uid++)) |
586 | return 0; | |
587 | ||
588 | for(; *uid; uid++) | |
589 | { | |
590 | len++; | |
591 | ||
592 | if(!IsIdChar(*uid)) | |
593 | return 0; | |
594 | } | |
595 | ||
596 | if(len != IDLEN - 1) | |
597 | return 0; | |
598 | ||
599 | return 1; | |
600 | } | |
601 | ||
602 | static void | |
603 | set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick) | |
604 | { | |
0e7cb7e6 | 605 | char note[NICKLEN + 10]; |
212380e3 AC |
606 | |
607 | /* This had to be copied here to avoid problems.. */ | |
e3354945 | 608 | source_p->tsinfo = rb_current_time(); |
212380e3 AC |
609 | if(source_p->name[0]) |
610 | del_from_client_hash(source_p->name, source_p); | |
611 | ||
612 | strcpy(source_p->name, nick); | |
613 | add_to_client_hash(nick, source_p); | |
614 | ||
0e7cb7e6 JT |
615 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); |
616 | rb_note(client_p->localClient->F, note); | |
212380e3 AC |
617 | |
618 | if(source_p->flags & FLAGS_SENTUSER) | |
619 | { | |
212380e3 | 620 | /* got user, heres nick. */ |
21251822 | 621 | register_local_user(client_p, source_p); |
212380e3 AC |
622 | } |
623 | } | |
624 | ||
625 | static void | |
626 | change_local_nick(struct Client *client_p, struct Client *source_p, | |
627 | char *nick, int dosend) | |
628 | { | |
629 | struct Client *target_p; | |
637c4932 | 630 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 631 | struct Channel *chptr; |
0e7cb7e6 | 632 | char note[NICKLEN + 10]; |
212380e3 AC |
633 | int samenick; |
634 | ||
635 | if (dosend) | |
636 | { | |
637 | chptr = find_bannickchange_channel(source_p); | |
638 | if (chptr != NULL) | |
639 | { | |
640 | sendto_one_numeric(source_p, ERR_BANNICKCHANGE, | |
641 | form_str(ERR_BANNICKCHANGE), | |
642 | nick, chptr->chname); | |
643 | return; | |
644 | } | |
e3354945 | 645 | if((source_p->localClient->last_nick_change + ConfigFileEntry.max_nick_time) < rb_current_time()) |
212380e3 AC |
646 | source_p->localClient->number_of_nick_changes = 0; |
647 | ||
e3354945 | 648 | source_p->localClient->last_nick_change = rb_current_time(); |
212380e3 AC |
649 | source_p->localClient->number_of_nick_changes++; |
650 | ||
651 | if(ConfigFileEntry.anti_nick_flood && !IsOper(source_p) && | |
652 | source_p->localClient->number_of_nick_changes > ConfigFileEntry.max_nick_changes) | |
653 | { | |
654 | sendto_one(source_p, form_str(ERR_NICKTOOFAST), | |
655 | me.name, source_p->name, source_p->name, | |
656 | nick, ConfigFileEntry.max_nick_time); | |
657 | return; | |
658 | } | |
659 | } | |
660 | ||
661 | samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
662 | ||
663 | /* dont reset TS if theyre just changing case of nick */ | |
664 | if(!samenick) | |
665 | { | |
95ffa685 | 666 | /* force the TS to increase -- jilles */ |
e3354945 | 667 | if (source_p->tsinfo >= rb_current_time()) |
95ffa685 JT |
668 | source_p->tsinfo++; |
669 | else | |
e3354945 | 670 | source_p->tsinfo = rb_current_time(); |
212380e3 AC |
671 | monitor_signoff(source_p); |
672 | /* we only do bancache for local users -- jilles */ | |
673 | if(source_p->user) | |
674 | invalidate_bancache_user(source_p); | |
675 | } | |
676 | ||
677 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
678 | "Nick change: From %s to %s [%s@%s]", | |
679 | source_p->name, nick, source_p->username, source_p->host); | |
680 | ||
681 | /* send the nick change to the users channels */ | |
583f064f | 682 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
212380e3 AC |
683 | source_p->name, source_p->username, source_p->host, nick); |
684 | ||
685 | /* send the nick change to servers.. */ | |
686 | if(source_p->user) | |
687 | { | |
688 | add_history(source_p, 1); | |
689 | ||
690 | if (dosend) | |
691 | { | |
692 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
693 | use_id(source_p), nick, (long) source_p->tsinfo); | |
212380e3 AC |
694 | } |
695 | } | |
696 | ||
697 | /* Finally, add to hash */ | |
698 | del_from_client_hash(source_p->name, source_p); | |
699 | strcpy(source_p->name, nick); | |
700 | add_to_client_hash(nick, source_p); | |
701 | ||
702 | if(!samenick) | |
703 | monitor_signon(source_p); | |
704 | ||
705 | /* Make sure everyone that has this client on its accept list | |
55abcbb2 | 706 | * loses that reference. |
212380e3 AC |
707 | */ |
708 | /* we used to call del_all_accepts() here, but theres no real reason | |
709 | * to clear a clients own list of accepted clients. So just remove | |
710 | * them from everyone elses list --anfl | |
711 | */ | |
637c4932 | 712 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->on_allow_list.head) |
212380e3 AC |
713 | { |
714 | target_p = ptr->data; | |
715 | ||
555ac41f JT |
716 | rb_dlinkFindDestroy(source_p, &target_p->localClient->allow_list); |
717 | rb_dlinkDestroy(ptr, &source_p->on_allow_list); | |
212380e3 AC |
718 | } |
719 | ||
0e7cb7e6 JT |
720 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); |
721 | rb_note(client_p->localClient->F, note); | |
212380e3 AC |
722 | |
723 | return; | |
724 | } | |
725 | ||
726 | /* | |
727 | * change_remote_nick() | |
728 | */ | |
729 | static int | |
730 | change_remote_nick(struct Client *client_p, struct Client *source_p, | |
731 | time_t newts, const char *nick, int dosend) | |
732 | { | |
733 | struct nd_entry *nd; | |
734 | int samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
735 | ||
736 | /* client changing their nick - dont reset ts if its same */ | |
737 | if(!samenick) | |
738 | { | |
e3354945 | 739 | source_p->tsinfo = newts ? newts : rb_current_time(); |
212380e3 AC |
740 | monitor_signoff(source_p); |
741 | } | |
742 | ||
583f064f | 743 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
212380e3 AC |
744 | source_p->name, source_p->username, source_p->host, nick); |
745 | ||
746 | if(source_p->user) | |
747 | { | |
748 | add_history(source_p, 1); | |
749 | if (dosend) | |
750 | { | |
751 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
752 | use_id(source_p), nick, (long) source_p->tsinfo); | |
212380e3 AC |
753 | } |
754 | } | |
755 | ||
756 | del_from_client_hash(source_p->name, source_p); | |
757 | ||
758 | /* invalidate nick delay when a remote client uses the nick.. */ | |
b37021a4 | 759 | if((nd = irc_dictionary_retrieve(nd_dict, nick))) |
212380e3 AC |
760 | free_nd_entry(nd); |
761 | ||
762 | strcpy(source_p->name, nick); | |
763 | add_to_client_hash(nick, source_p); | |
764 | ||
765 | if(!samenick) | |
766 | monitor_signon(source_p); | |
767 | ||
768 | /* remove all accepts pointing to the client */ | |
769 | del_all_accepts(source_p); | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
774 | static int | |
775 | perform_nick_collides(struct Client *source_p, struct Client *client_p, | |
776 | struct Client *target_p, int parc, const char *parv[], | |
777 | time_t newts, const char *nick, const char *uid) | |
778 | { | |
779 | int sameuser; | |
780 | int use_save; | |
781 | const char *action; | |
782 | ||
783 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
784 | uid != NULL && can_save(source_p); | |
785 | action = use_save ? "saved" : "killed"; | |
786 | ||
787 | /* if we dont have a ts, or their TS's are the same, kill both */ | |
788 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) | |
789 | { | |
9d107a71 | 790 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
791 | "Nick collision on %s(%s <- %s)(both %s)", |
792 | target_p->name, target_p->from->name, client_p->name, action); | |
793 | ||
794 | if (use_save) | |
795 | { | |
796 | save_user(&me, &me, target_p); | |
47adde3d | 797 | ServerStats.is_save++; |
212380e3 AC |
798 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, |
799 | uid, (long)newts); | |
800 | register_client(client_p, source_p, | |
3f7e0642 | 801 | uid, SAVE_NICKTS, parc, parv); |
212380e3 AC |
802 | } |
803 | else | |
804 | { | |
805 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
806 | form_str(ERR_NICKCOLLISION), target_p->name); | |
807 | ||
808 | /* if the new client being introduced has a UID, we need to | |
809 | * issue a KILL for it.. | |
810 | */ | |
811 | if(uid) | |
812 | sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", | |
813 | me.id, uid, me.name); | |
814 | ||
815 | /* we then need to KILL the old client everywhere */ | |
816 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (new))", me.name); | |
47adde3d | 817 | ServerStats.is_kill++; |
212380e3 AC |
818 | |
819 | target_p->flags |= FLAGS_KILLED; | |
820 | exit_client(client_p, target_p, &me, "Nick collision (new)"); | |
821 | } | |
822 | return 0; | |
823 | } | |
824 | /* the timestamps are different */ | |
825 | else | |
826 | { | |
827 | sameuser = (target_p->user) && !irccmp(target_p->username, parv[5]) | |
828 | && !irccmp(target_p->host, parv[6]); | |
829 | ||
830 | if((sameuser && newts < target_p->tsinfo) || | |
831 | (!sameuser && newts > target_p->tsinfo)) | |
832 | { | |
833 | /* if we have a UID, then we need to issue a KILL, | |
834 | * otherwise we do nothing and hope that the other | |
835 | * client will collide it.. | |
836 | */ | |
837 | if (use_save) | |
838 | { | |
839 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
840 | uid, (long)newts); | |
841 | register_client(client_p, source_p, | |
3f7e0642 | 842 | uid, SAVE_NICKTS, parc, parv); |
212380e3 AC |
843 | } |
844 | else if(uid) | |
845 | sendto_one(client_p, | |
846 | ":%s KILL %s :%s (Nick collision (new))", | |
847 | me.id, uid, me.name); | |
848 | return 0; | |
849 | } | |
850 | else | |
851 | { | |
852 | if(sameuser) | |
9d107a71 | 853 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
854 | "Nick collision on %s(%s <- %s)(older %s)", |
855 | target_p->name, target_p->from->name, | |
856 | client_p->name, action); | |
857 | else | |
9d107a71 | 858 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
859 | "Nick collision on %s(%s <- %s)(newer %s)", |
860 | target_p->name, target_p->from->name, | |
861 | client_p->name, action); | |
862 | ||
863 | if (use_save) | |
864 | { | |
47adde3d | 865 | ServerStats.is_save++; |
212380e3 AC |
866 | save_user(&me, &me, target_p); |
867 | } | |
868 | else | |
869 | { | |
47adde3d | 870 | ServerStats.is_kill++; |
212380e3 AC |
871 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, |
872 | form_str(ERR_NICKCOLLISION), target_p->name); | |
873 | ||
874 | /* now we just need to kill the existing client */ | |
875 | kill_client_serv_butone(client_p, target_p, | |
876 | "%s (Nick collision (new))", me.name); | |
877 | ||
878 | target_p->flags |= FLAGS_KILLED; | |
879 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
880 | } | |
881 | ||
463947ad | 882 | register_client(client_p, source_p, |
212380e3 AC |
883 | nick, newts, parc, parv); |
884 | ||
885 | return 0; | |
886 | } | |
887 | } | |
888 | } | |
889 | ||
890 | ||
891 | static int | |
892 | perform_nickchange_collides(struct Client *source_p, struct Client *client_p, | |
893 | struct Client *target_p, int parc, | |
894 | const char *parv[], time_t newts, const char *nick) | |
895 | { | |
896 | int sameuser; | |
897 | int use_save; | |
898 | const char *action; | |
899 | ||
900 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
901 | can_save(source_p); | |
902 | action = use_save ? "saved" : "killed"; | |
903 | ||
904 | /* its a client changing nick and causing a collide */ | |
905 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo) || !source_p->user) | |
906 | { | |
9d107a71 | 907 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
908 | "Nick change collision from %s to %s(%s <- %s)(both %s)", |
909 | source_p->name, target_p->name, target_p->from->name, | |
910 | client_p->name, action); | |
911 | ||
912 | if (use_save) | |
913 | { | |
47adde3d | 914 | ServerStats.is_save += 2; |
212380e3 AC |
915 | save_user(&me, &me, target_p); |
916 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
917 | source_p->id, (long)newts); | |
918 | /* don't send a redundant nick change */ | |
919 | if (!IsDigit(source_p->name[0])) | |
3f7e0642 | 920 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); |
212380e3 AC |
921 | } |
922 | else | |
923 | { | |
47adde3d | 924 | ServerStats.is_kill++; |
212380e3 AC |
925 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, |
926 | form_str(ERR_NICKCOLLISION), target_p->name); | |
927 | ||
928 | kill_client_serv_butone(NULL, source_p, "%s (Nick change collision)", me.name); | |
929 | ||
47adde3d | 930 | ServerStats.is_kill++; |
212380e3 AC |
931 | |
932 | kill_client_serv_butone(NULL, target_p, "%s (Nick change collision)", me.name); | |
933 | ||
934 | target_p->flags |= FLAGS_KILLED; | |
935 | exit_client(NULL, target_p, &me, "Nick collision(new)"); | |
936 | source_p->flags |= FLAGS_KILLED; | |
937 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
938 | } | |
939 | return 0; | |
940 | } | |
941 | else | |
942 | { | |
943 | sameuser = !irccmp(target_p->username, source_p->username) && | |
944 | !irccmp(target_p->host, source_p->host); | |
945 | ||
946 | if((sameuser && newts < target_p->tsinfo) || | |
947 | (!sameuser && newts > target_p->tsinfo)) | |
948 | { | |
949 | if(sameuser) | |
9d107a71 | 950 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
951 | "Nick change collision from %s to %s(%s <- %s)(older %s)", |
952 | source_p->name, target_p->name, | |
953 | target_p->from->name, client_p->name, action); | |
954 | else | |
9d107a71 | 955 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
956 | "Nick change collision from %s to %s(%s <- %s)(newer %s)", |
957 | source_p->name, target_p->name, | |
958 | target_p->from->name, client_p->name, action); | |
959 | ||
960 | if (use_save) | |
961 | { | |
47adde3d | 962 | ServerStats.is_save++; |
212380e3 AC |
963 | /* can't broadcast a SAVE because the |
964 | * nickchange has happened at client_p | |
965 | * but not in other directions -- jilles */ | |
966 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
967 | source_p->id, (long)newts); | |
212380e3 AC |
968 | /* send a :<id> NICK <id> <ts> (!) */ |
969 | if (!IsDigit(source_p->name[0])) | |
3f7e0642 | 970 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); |
212380e3 AC |
971 | } |
972 | else | |
973 | { | |
47adde3d | 974 | ServerStats.is_kill++; |
212380e3 | 975 | |
ce782b68 JT |
976 | sendto_one_numeric(source_p, ERR_NICKCOLLISION, |
977 | form_str(ERR_NICKCOLLISION), source_p->name); | |
212380e3 AC |
978 | |
979 | /* kill the client issuing the nickchange */ | |
980 | kill_client_serv_butone(client_p, source_p, | |
981 | "%s (Nick change collision)", me.name); | |
982 | ||
983 | source_p->flags |= FLAGS_KILLED; | |
984 | ||
985 | if(sameuser) | |
986 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
987 | else | |
988 | exit_client(client_p, source_p, &me, "Nick collision(new)"); | |
989 | } | |
990 | return 0; | |
991 | } | |
992 | else | |
993 | { | |
994 | if(sameuser) | |
9d107a71 | 995 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
996 | "Nick collision on %s(%s <- %s)(older %s)", |
997 | target_p->name, target_p->from->name, | |
998 | client_p->name, action); | |
999 | else | |
9d107a71 | 1000 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
1001 | "Nick collision on %s(%s <- %s)(newer %s)", |
1002 | target_p->name, target_p->from->name, | |
1003 | client_p->name, action); | |
1004 | ||
1005 | if (use_save) | |
1006 | { | |
47adde3d | 1007 | ServerStats.is_save++; |
212380e3 AC |
1008 | save_user(&me, &me, target_p); |
1009 | } | |
1010 | else | |
1011 | { | |
1012 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1013 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1014 | ||
1015 | /* kill the client who existed before hand */ | |
1016 | kill_client_serv_butone(client_p, target_p, "%s (Nick collision)", me.name); | |
1017 | ||
47adde3d | 1018 | ServerStats.is_kill++; |
212380e3 AC |
1019 | |
1020 | target_p->flags |= FLAGS_KILLED; | |
1021 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1022 | } | |
1023 | } | |
1024 | } | |
1025 | ||
1026 | change_remote_nick(client_p, source_p, newts, nick, 1); | |
1027 | ||
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | static int | |
1032 | register_client(struct Client *client_p, struct Client *server, | |
1033 | const char *nick, time_t newts, int parc, const char *parv[]) | |
1034 | { | |
1035 | struct Client *source_p; | |
1036 | struct User *user; | |
1037 | struct nd_entry *nd; | |
1038 | const char *m; | |
1039 | int flag; | |
1040 | ||
1041 | source_p = make_client(client_p); | |
1042 | user = make_user(source_p); | |
0e7cb7e6 | 1043 | rb_dlinkAddTail(source_p, &source_p->node, &global_client_list); |
212380e3 AC |
1044 | |
1045 | source_p->hopcount = atoi(parv[2]); | |
1046 | source_p->tsinfo = newts; | |
1047 | ||
1048 | strcpy(source_p->name, nick); | |
f427c8b0 VY |
1049 | rb_strlcpy(source_p->username, parv[5], sizeof(source_p->username)); |
1050 | rb_strlcpy(source_p->host, parv[6], sizeof(source_p->host)); | |
1051 | rb_strlcpy(source_p->orighost, source_p->host, sizeof(source_p->orighost)); | |
212380e3 AC |
1052 | |
1053 | if(parc == 12) | |
1054 | { | |
f427c8b0 VY |
1055 | rb_strlcpy(source_p->info, parv[11], sizeof(source_p->info)); |
1056 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1057 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
212380e3 AC |
1058 | add_to_id_hash(source_p->id, source_p); |
1059 | if (strcmp(parv[9], "*")) | |
1060 | { | |
f427c8b0 | 1061 | rb_strlcpy(source_p->orighost, parv[9], sizeof(source_p->orighost)); |
212380e3 AC |
1062 | if (irccmp(source_p->host, source_p->orighost)) |
1063 | SetDynSpoof(source_p); | |
1064 | } | |
1065 | if (strcmp(parv[10], "*")) | |
f427c8b0 | 1066 | rb_strlcpy(source_p->user->suser, parv[10], sizeof(source_p->user->suser)); |
212380e3 AC |
1067 | } |
1068 | else if(parc == 10) | |
1069 | { | |
f427c8b0 VY |
1070 | rb_strlcpy(source_p->info, parv[9], sizeof(source_p->info)); |
1071 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1072 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
212380e3 AC |
1073 | add_to_id_hash(source_p->id, source_p); |
1074 | } | |
1075 | else | |
1076 | { | |
463947ad | 1077 | s_assert(0); |
212380e3 AC |
1078 | } |
1079 | ||
1080 | /* remove any nd entries for this nick */ | |
b37021a4 | 1081 | if((nd = irc_dictionary_retrieve(nd_dict, nick))) |
212380e3 AC |
1082 | free_nd_entry(nd); |
1083 | ||
1084 | add_to_client_hash(nick, source_p); | |
66b4a7ae | 1085 | add_to_hostname_hash(source_p->orighost, source_p); |
212380e3 AC |
1086 | monitor_signon(source_p); |
1087 | ||
1088 | m = &parv[4][1]; | |
1089 | while(*m) | |
1090 | { | |
1091 | flag = user_modes[(unsigned char) *m]; | |
1092 | ||
1093 | if(flag & UMODE_SERVICE) | |
1094 | { | |
1095 | int hit = 0; | |
5b96d9a6 | 1096 | rb_dlink_node *ptr; |
212380e3 | 1097 | |
5b96d9a6 | 1098 | RB_DLINK_FOREACH(ptr, service_list.head) |
212380e3 | 1099 | { |
c88cdb00 | 1100 | if(!irccmp((const char *) ptr->data, server->name)) |
212380e3 AC |
1101 | { |
1102 | hit++; | |
1103 | break; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | if(!hit) | |
1108 | { | |
1109 | m++; | |
1110 | continue; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | /* increment +i count if theyre invis */ | |
1115 | if(!(source_p->umodes & UMODE_INVISIBLE) && (flag & UMODE_INVISIBLE)) | |
1116 | Count.invisi++; | |
1117 | ||
1118 | /* increment opered count if theyre opered */ | |
1119 | if(!(source_p->umodes & UMODE_OPER) && (flag & UMODE_OPER)) | |
1120 | Count.oper++; | |
1121 | ||
1122 | source_p->umodes |= flag; | |
1123 | m++; | |
1124 | } | |
1125 | ||
1126 | if(IsOper(source_p) && !IsService(source_p)) | |
0e7cb7e6 | 1127 | rb_dlinkAddAlloc(source_p, &oper_list); |
212380e3 AC |
1128 | |
1129 | SetRemoteClient(source_p); | |
1130 | ||
1131 | if(++Count.total > Count.max_tot) | |
1132 | Count.max_tot = Count.total; | |
1133 | ||
64449595 | 1134 | source_p->servptr = server; |
212380e3 | 1135 | |
0e7cb7e6 | 1136 | rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users); |
212380e3 | 1137 | |
212380e3 AC |
1138 | call_hook(h_new_remote_user, source_p); |
1139 | ||
1140 | return (introduce_client(client_p, source_p, user, nick, parc == 12)); | |
1141 | } | |
1142 | ||
1143 | /* Check if we can do SAVE. target_p can be a client to save or a | |
1144 | * server introducing a client -- jilles */ | |
1145 | static int | |
1146 | can_save(struct Client *target_p) | |
1147 | { | |
1148 | struct Client *serv_p; | |
1149 | ||
1150 | if (MyClient(target_p)) | |
1151 | return 1; | |
1152 | if (!has_id(target_p)) | |
1153 | return 0; | |
1154 | serv_p = IsServer(target_p) ? target_p : target_p->servptr; | |
1155 | while (serv_p != NULL && serv_p != &me) | |
1156 | { | |
1157 | if (!(serv_p->serv->caps & CAP_SAVE)) | |
1158 | return 0; | |
1159 | serv_p = serv_p->servptr; | |
1160 | } | |
1161 | return serv_p == &me; | |
1162 | } | |
1163 | ||
1164 | static void | |
1165 | save_user(struct Client *client_p, struct Client *source_p, | |
1166 | struct Client *target_p) | |
1167 | { | |
1168 | if (!MyConnect(target_p) && (!has_id(target_p) || !IsCapable(target_p->from, CAP_SAVE))) | |
1169 | { | |
1170 | /* This shouldn't happen */ | |
1171 | /* Note we only need SAVE support in this direction */ | |
1172 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1173 | "Killed %s!%s@%s for nick collision detected by %s (%s does not support SAVE)", | |
1174 | target_p->name, target_p->username, target_p->host, source_p->name, target_p->from->name); | |
1175 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (no SAVE support))", me.name); | |
47adde3d | 1176 | ServerStats.is_kill++; |
212380e3 AC |
1177 | |
1178 | target_p->flags |= FLAGS_KILLED; | |
1179 | (void) exit_client(NULL, target_p, &me, "Nick collision (no SAVE support)"); | |
1180 | return; | |
1181 | } | |
1182 | sendto_server(client_p, NULL, CAP_SAVE|CAP_TS6, NOCAPS, ":%s SAVE %s %ld", | |
1183 | source_p->id, target_p->id, (long)target_p->tsinfo); | |
1184 | sendto_server(client_p, NULL, CAP_TS6, CAP_SAVE, ":%s NICK %s :%ld", | |
3f7e0642 | 1185 | target_p->id, target_p->id, (long)SAVE_NICKTS); |
212380e3 AC |
1186 | if (!IsMe(client_p)) |
1187 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1188 | "Received SAVE message for %s from %s", | |
1189 | target_p->name, source_p->name); | |
1190 | if (MyClient(target_p)) | |
1191 | { | |
1192 | sendto_one_numeric(target_p, RPL_SAVENICK, | |
1193 | form_str(RPL_SAVENICK), target_p->id); | |
1194 | change_local_nick(target_p, target_p, target_p->id, 0); | |
3f7e0642 | 1195 | target_p->tsinfo = SAVE_NICKTS; |
212380e3 AC |
1196 | } |
1197 | else | |
3f7e0642 | 1198 | change_remote_nick(target_p, target_p, SAVE_NICKTS, target_p->id, 0); |
212380e3 | 1199 | } |
ad35b2cd JT |
1200 | |
1201 | static void bad_nickname(struct Client *client_p, const char *nick) | |
1202 | { | |
1203 | char squitreason[100]; | |
1204 | ||
1205 | sendto_wallops_flags(UMODE_WALLOP, &me, | |
1206 | "Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1207 | client_p->name, nick); | |
1208 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
1209 | ":%s WALLOPS :Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1210 | me.id, client_p->name, nick); | |
4dd5d304 JT |
1211 | ilog(L_SERVER, "Link %s cancelled, bad nickname %s sent (NICKLEN mismatch?)", |
1212 | client_p->name, nick); | |
ad35b2cd JT |
1213 | |
1214 | rb_snprintf(squitreason, sizeof squitreason, | |
1215 | "Bad nickname introduced [%s]", nick); | |
1216 | exit_client(client_p, client_p, &me, squitreason); | |
1217 | } |