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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 | ||
95 | static int clean_nick(const char *, int loc_client); | |
96 | static int clean_username(const char *); | |
97 | static int clean_host(const char *); | |
561d7efc | 98 | static int clean_uid(const char *uid, const char *sid); |
212380e3 AC |
99 | |
100 | static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick); | |
101 | static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int); | |
102 | static int register_client(struct Client *client_p, struct Client *server, | |
103 | const char *nick, time_t newts, int parc, const char *parv[]); | |
104 | ||
105 | static int perform_nick_collides(struct Client *, struct Client *, | |
106 | struct Client *, int, const char **, | |
107 | time_t, const char *, const char *); | |
108 | static int perform_nickchange_collides(struct Client *, struct Client *, | |
109 | struct Client *, int, const char **, time_t, const char *); | |
110 | ||
111 | /* mr_nick() | |
212380e3 AC |
112 | * parv[1] = nickname |
113 | */ | |
114 | static int | |
115 | mr_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
116 | { | |
117 | struct Client *target_p; | |
118 | char nick[NICKLEN]; | |
212380e3 AC |
119 | |
120 | if (strlen(client_p->id) == 3) | |
121 | { | |
122 | exit_client(client_p, client_p, client_p, "Mixing client and server protocol"); | |
123 | return 0; | |
124 | } | |
125 | ||
fda96b89 | 126 | if(parc < 2 || EmptyString(parv[1])) |
212380e3 AC |
127 | { |
128 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
129 | me.name, EmptyString(source_p->name) ? "*" : source_p->name); | |
130 | return 0; | |
131 | } | |
132 | ||
212380e3 | 133 | /* copy the nick and terminate it */ |
b583faf9 | 134 | rb_strlcpy(nick, parv[1], ConfigFileEntry.nicklen); |
212380e3 AC |
135 | |
136 | /* check the nickname is ok */ | |
137 | if(!clean_nick(nick, 1)) | |
138 | { | |
139 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
3dfaa671 | 140 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, parv[1]); |
212380e3 AC |
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 | ||
b37021a4 | 152 | if(irc_dictionary_find(nd_dict, nick)) |
212380e3 AC |
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() | |
212380e3 AC |
170 | * parv[1] = nickname |
171 | */ | |
172 | static int | |
173 | m_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
174 | { | |
175 | struct Client *target_p; | |
176 | char nick[NICKLEN]; | |
212380e3 | 177 | |
fda96b89 | 178 | if(parc < 2 || EmptyString(parv[1])) |
212380e3 AC |
179 | { |
180 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); | |
181 | return 0; | |
182 | } | |
183 | ||
212380e3 AC |
184 | /* mark end of grace period, to prevent nickflooding */ |
185 | if(!IsFloodDone(source_p)) | |
186 | flood_endgrace(source_p); | |
187 | ||
188 | /* terminate nick to NICKLEN, we dont want clean_nick() to error! */ | |
b583faf9 | 189 | rb_strlcpy(nick, parv[1], ConfigFileEntry.nicklen); |
212380e3 AC |
190 | |
191 | /* check the nickname is ok */ | |
192 | if(!clean_nick(nick, 1)) | |
193 | { | |
3dfaa671 | 194 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); |
212380e3 AC |
195 | return 0; |
196 | } | |
197 | ||
198 | if(!IsExemptResv(source_p) && find_nick_resv(nick)) | |
199 | { | |
200 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); | |
201 | return 0; | |
202 | } | |
203 | ||
b37021a4 | 204 | if(irc_dictionary_find(nd_dict, nick)) |
212380e3 AC |
205 | { |
206 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
207 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | if((target_p = find_named_client(nick))) | |
212 | { | |
213 | /* If(target_p == source_p) the client is changing nicks between | |
214 | * equivalent nicknames ie: [nick] -> {nick} | |
215 | */ | |
216 | if(target_p == source_p) | |
217 | { | |
218 | /* check the nick isnt exactly the same */ | |
219 | if(strcmp(target_p->name, nick)) | |
220 | change_local_nick(client_p, source_p, nick, 1); | |
221 | ||
222 | } | |
223 | ||
224 | /* drop unregged client */ | |
225 | else if(IsUnknown(target_p)) | |
226 | { | |
227 | exit_client(NULL, target_p, &me, "Overridden"); | |
228 | change_local_nick(client_p, source_p, nick, 1); | |
229 | } | |
230 | else | |
3dfaa671 | 231 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, source_p->name, nick); |
212380e3 AC |
232 | |
233 | return 0; | |
234 | } | |
235 | else | |
236 | change_local_nick(client_p, source_p, nick, 1); | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
6c77f1f7 | 241 | /* mc_nick() |
55abcbb2 | 242 | * |
212380e3 | 243 | * server -> server nick change |
212380e3 AC |
244 | * parv[1] = nickname |
245 | * parv[2] = TS when nick change | |
212380e3 AC |
246 | */ |
247 | static int | |
248 | mc_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
249 | { | |
250 | struct Client *target_p; | |
251 | time_t newts = 0; | |
252 | ||
253 | /* if nicks erroneous, or too long, kill */ | |
254 | if(!clean_nick(parv[1], 0)) | |
255 | { | |
ad35b2cd | 256 | bad_nickname(client_p, parv[1]); |
212380e3 AC |
257 | return 0; |
258 | } | |
259 | ||
260 | newts = atol(parv[2]); | |
261 | target_p = find_named_client(parv[1]); | |
262 | ||
263 | /* if the nick doesnt exist, allow it and process like normal */ | |
264 | if(target_p == NULL) | |
265 | { | |
266 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
267 | } | |
268 | else if(IsUnknown(target_p)) | |
269 | { | |
270 | exit_client(NULL, target_p, &me, "Overridden"); | |
271 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
272 | } | |
273 | else if(target_p == source_p) | |
274 | { | |
275 | /* client changing case of nick */ | |
276 | if(strcmp(target_p->name, parv[1])) | |
277 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
278 | } | |
279 | /* we've got a collision! */ | |
280 | else | |
281 | perform_nickchange_collides(source_p, client_p, target_p, | |
282 | parc, parv, newts, parv[1]); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | static int | |
288 | ms_nick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
289 | { | |
6c77f1f7 | 290 | const char *nick, *server; |
212380e3 | 291 | |
6c77f1f7 JT |
292 | nick = parc > 1 ? parv[1] : "?"; |
293 | server = parc > 7 ? parv[7] : "?"; | |
212380e3 | 294 | |
6c77f1f7 JT |
295 | sendto_wallops_flags(UMODE_WALLOP, &me, |
296 | "Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
297 | client_p->name, nick, server); | |
298 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
299 | ":%s WALLOPS :Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
300 | me.id, client_p->name, nick, server); | |
301 | ilog(L_SERVER, "Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
302 | client_p->name, nick, server); | |
212380e3 | 303 | |
6c77f1f7 | 304 | exit_client(client_p, client_p, &me, "TS5 nickname introduced"); |
212380e3 AC |
305 | |
306 | return 0; | |
307 | } | |
308 | ||
309 | /* ms_uid() | |
310 | * parv[1] - nickname | |
311 | * parv[2] - hops | |
312 | * parv[3] - TS | |
313 | * parv[4] - umodes | |
314 | * parv[5] - username | |
315 | * parv[6] - hostname | |
316 | * parv[7] - IP | |
317 | * parv[8] - UID | |
318 | * parv[9] - gecos | |
319 | */ | |
320 | static int | |
321 | ms_uid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
322 | { | |
323 | struct Client *target_p; | |
324 | time_t newts = 0; | |
4a5655b2 | 325 | char squitreason[120]; |
212380e3 AC |
326 | |
327 | newts = atol(parv[3]); | |
328 | ||
329 | if(parc != 10) | |
330 | { | |
331 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
332 | "Dropping server %s due to (invalid) command 'UID' " | |
333 | "with %d arguments (expecting 10)", client_p->name, parc); | |
334 | ilog(L_SERVER, "Excess parameters (%d) for command 'UID' from %s.", | |
335 | parc, client_p->name); | |
56023eb2 JT |
336 | rb_snprintf(squitreason, sizeof squitreason, |
337 | "Excess parameters (%d) to %s command, expecting %d", | |
338 | parc, "UID", 10); | |
339 | exit_client(client_p, client_p, client_p, squitreason); | |
212380e3 AC |
340 | return 0; |
341 | } | |
342 | ||
343 | /* if nicks erroneous, or too long, kill */ | |
344 | if(!clean_nick(parv[1], 0)) | |
345 | { | |
ad35b2cd | 346 | bad_nickname(client_p, parv[1]); |
212380e3 AC |
347 | return 0; |
348 | } | |
349 | ||
561d7efc | 350 | if(!clean_uid(parv[8], source_p->id)) |
212380e3 | 351 | { |
4a5655b2 | 352 | rb_snprintf(squitreason, sizeof squitreason, |
e0c7937a JT |
353 | "Invalid UID %s for nick %s on %s/%s", |
354 | parv[8], parv[1], source_p->name, source_p->id); | |
4a5655b2 | 355 | exit_client(client_p, client_p, client_p, squitreason); |
212380e3 AC |
356 | return 0; |
357 | } | |
358 | ||
4a5655b2 | 359 | if(!clean_username(parv[5]) || !clean_host(parv[6])) |
212380e3 | 360 | { |
47adde3d | 361 | ServerStats.is_kill++; |
212380e3 | 362 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
4a5655b2 JT |
363 | "Bad user@host: %s@%s From: %s(via %s)", |
364 | parv[5], parv[6], source_p->name, client_p->name); | |
365 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
212380e3 AC |
366 | return 0; |
367 | } | |
368 | ||
369 | /* check length of clients gecos */ | |
370 | if(strlen(parv[9]) > REALLEN) | |
371 | { | |
372 | char *s = LOCAL_COPY(parv[9]); | |
373 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
3dfaa671 | 374 | source_p->name, parv[1]); |
212380e3 AC |
375 | s[REALLEN] = '\0'; |
376 | parv[9] = s; | |
377 | } | |
378 | ||
379 | target_p = find_named_client(parv[1]); | |
380 | ||
381 | if(target_p == NULL) | |
382 | { | |
383 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
384 | } | |
385 | else if(IsUnknown(target_p)) | |
386 | { | |
387 | exit_client(NULL, target_p, &me, "Overridden"); | |
388 | register_client(client_p, source_p, 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], parv[8]); | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | /* ms_euid() | |
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] - realhost | |
408 | * parv[10] - account | |
409 | * parv[11] - gecos | |
410 | */ | |
411 | static int | |
412 | ms_euid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
413 | { | |
414 | struct Client *target_p; | |
415 | time_t newts = 0; | |
4a5655b2 | 416 | char squitreason[120]; |
212380e3 AC |
417 | |
418 | newts = atol(parv[3]); | |
419 | ||
420 | if(parc != 12) | |
421 | { | |
422 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
423 | "Dropping server %s due to (invalid) command 'EUID' " | |
424 | "with %d arguments (expecting 12)", client_p->name, parc); | |
425 | ilog(L_SERVER, "Excess parameters (%d) for command 'EUID' from %s.", | |
426 | parc, client_p->name); | |
56023eb2 JT |
427 | rb_snprintf(squitreason, sizeof squitreason, |
428 | "Excess parameters (%d) to %s command, expecting %d", | |
429 | parc, "EUID", 12); | |
430 | exit_client(client_p, client_p, client_p, squitreason); | |
212380e3 AC |
431 | return 0; |
432 | } | |
433 | ||
434 | /* if nicks erroneous, or too long, kill */ | |
435 | if(!clean_nick(parv[1], 0)) | |
436 | { | |
ad35b2cd | 437 | bad_nickname(client_p, parv[1]); |
212380e3 AC |
438 | return 0; |
439 | } | |
440 | ||
561d7efc | 441 | if(!clean_uid(parv[8], source_p->id)) |
212380e3 | 442 | { |
4a5655b2 | 443 | rb_snprintf(squitreason, sizeof squitreason, |
e0c7937a JT |
444 | "Invalid UID %s for nick %s on %s/%s", |
445 | parv[8], parv[1], source_p->name, source_p->id); | |
4a5655b2 | 446 | exit_client(client_p, client_p, client_p, squitreason); |
212380e3 AC |
447 | return 0; |
448 | } | |
449 | ||
4a5655b2 | 450 | if(!clean_username(parv[5]) || !clean_host(parv[6])) |
212380e3 | 451 | { |
47adde3d | 452 | ServerStats.is_kill++; |
212380e3 | 453 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
4a5655b2 JT |
454 | "Bad user@host: %s@%s From: %s(via %s)", |
455 | parv[5], parv[6], source_p->name, client_p->name); | |
456 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
212380e3 AC |
457 | return 0; |
458 | } | |
459 | ||
460 | if(strcmp(parv[9], "*") && !clean_host(parv[9])) | |
461 | { | |
47adde3d | 462 | ServerStats.is_kill++; |
212380e3 AC |
463 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
464 | "Bad realhost: %s From: %s(via %s)", | |
465 | parv[9], source_p->name, client_p->name); | |
466 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | /* check length of clients gecos */ | |
471 | if(strlen(parv[11]) > REALLEN) | |
472 | { | |
473 | char *s = LOCAL_COPY(parv[11]); | |
474 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
3dfaa671 | 475 | source_p->name, parv[1]); |
212380e3 AC |
476 | s[REALLEN] = '\0'; |
477 | parv[11] = s; | |
478 | } | |
479 | ||
480 | target_p = find_named_client(parv[1]); | |
481 | ||
482 | if(target_p == NULL) | |
483 | { | |
484 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
485 | } | |
486 | else if(IsUnknown(target_p)) | |
487 | { | |
488 | exit_client(NULL, target_p, &me, "Overridden"); | |
489 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
490 | } | |
491 | /* we've got a collision! */ | |
492 | else | |
493 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
494 | newts, parv[1], parv[8]); | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | /* ms_save() | |
500 | * parv[1] - UID | |
501 | * parv[2] - TS | |
502 | */ | |
503 | static int | |
504 | ms_save(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
505 | { | |
506 | struct Client *target_p; | |
507 | ||
508 | target_p = find_id(parv[1]); | |
509 | if (target_p == NULL) | |
510 | return 0; | |
511 | if (!IsPerson(target_p)) | |
512 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
513 | "Ignored SAVE message for non-person %s from %s", | |
514 | target_p->name, source_p->name); | |
515 | else if (IsDigit(target_p->name[0])) | |
516 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
517 | "Ignored noop SAVE message for %s from %s", | |
518 | target_p->name, source_p->name); | |
519 | else if (target_p->tsinfo == atol(parv[2])) | |
520 | save_user(client_p, source_p, target_p); | |
521 | else | |
522 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
523 | "Ignored SAVE message for %s from %s", | |
524 | target_p->name, source_p->name); | |
525 | return 0; | |
526 | } | |
527 | ||
528 | /* clean_nick() | |
529 | * | |
530 | * input - nickname to check | |
531 | * output - 0 if erroneous, else 1 | |
55abcbb2 | 532 | * side effects - |
212380e3 AC |
533 | */ |
534 | static int | |
535 | clean_nick(const char *nick, int loc_client) | |
536 | { | |
537 | int len = 0; | |
538 | ||
539 | /* nicks cant start with a digit or -, and must have a length */ | |
540 | if(*nick == '-' || *nick == '\0') | |
541 | return 0; | |
542 | ||
543 | if(loc_client && IsDigit(*nick)) | |
544 | return 0; | |
545 | ||
546 | for(; *nick; nick++) | |
547 | { | |
548 | len++; | |
549 | if(!IsNickChar(*nick)) | |
550 | return 0; | |
551 | } | |
552 | ||
553 | /* nicklen is +1 */ | |
9279ad64 | 554 | if(len >= NICKLEN && (unsigned int)len >= ConfigFileEntry.nicklen) |
212380e3 AC |
555 | return 0; |
556 | ||
557 | return 1; | |
558 | } | |
559 | ||
560 | /* clean_username() | |
561 | * | |
562 | * input - username to check | |
563 | * output - 0 if erroneous, else 0 | |
564 | * side effects - | |
565 | */ | |
566 | static int | |
567 | clean_username(const char *username) | |
568 | { | |
569 | int len = 0; | |
570 | ||
571 | for(; *username; username++) | |
572 | { | |
573 | len++; | |
574 | ||
575 | if(!IsUserChar(*username)) | |
576 | return 0; | |
577 | } | |
578 | ||
579 | if(len > USERLEN) | |
580 | return 0; | |
581 | ||
582 | return 1; | |
583 | } | |
584 | ||
585 | /* clean_host() | |
586 | * | |
587 | * input - host to check | |
588 | * output - 0 if erroneous, else 0 | |
589 | * side effects - | |
590 | */ | |
591 | static int | |
592 | clean_host(const char *host) | |
593 | { | |
594 | int len = 0; | |
595 | ||
596 | for(; *host; host++) | |
597 | { | |
598 | len++; | |
599 | ||
600 | if(!IsHostChar(*host)) | |
601 | return 0; | |
602 | } | |
603 | ||
604 | if(len > HOSTLEN) | |
605 | return 0; | |
606 | ||
607 | return 1; | |
608 | } | |
609 | ||
610 | static int | |
561d7efc | 611 | clean_uid(const char *uid, const char *sid) |
212380e3 AC |
612 | { |
613 | int len = 1; | |
614 | ||
561d7efc JT |
615 | if(strncmp(uid, sid, strlen(sid))) |
616 | return 0; | |
617 | ||
212380e3 AC |
618 | if(!IsDigit(*uid++)) |
619 | return 0; | |
620 | ||
621 | for(; *uid; uid++) | |
622 | { | |
623 | len++; | |
624 | ||
625 | if(!IsIdChar(*uid)) | |
626 | return 0; | |
627 | } | |
628 | ||
629 | if(len != IDLEN - 1) | |
630 | return 0; | |
631 | ||
632 | return 1; | |
633 | } | |
634 | ||
635 | static void | |
636 | set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick) | |
637 | { | |
0e7cb7e6 | 638 | char note[NICKLEN + 10]; |
212380e3 AC |
639 | |
640 | /* This had to be copied here to avoid problems.. */ | |
e3354945 | 641 | source_p->tsinfo = rb_current_time(); |
212380e3 AC |
642 | if(source_p->name[0]) |
643 | del_from_client_hash(source_p->name, source_p); | |
644 | ||
645 | strcpy(source_p->name, nick); | |
646 | add_to_client_hash(nick, source_p); | |
647 | ||
0e7cb7e6 JT |
648 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); |
649 | rb_note(client_p->localClient->F, note); | |
212380e3 AC |
650 | |
651 | if(source_p->flags & FLAGS_SENTUSER) | |
652 | { | |
212380e3 | 653 | /* got user, heres nick. */ |
21251822 | 654 | register_local_user(client_p, source_p); |
212380e3 AC |
655 | } |
656 | } | |
657 | ||
658 | static void | |
659 | change_local_nick(struct Client *client_p, struct Client *source_p, | |
660 | char *nick, int dosend) | |
661 | { | |
662 | struct Client *target_p; | |
637c4932 | 663 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 664 | struct Channel *chptr; |
0e7cb7e6 | 665 | char note[NICKLEN + 10]; |
212380e3 AC |
666 | int samenick; |
667 | ||
668 | if (dosend) | |
669 | { | |
670 | chptr = find_bannickchange_channel(source_p); | |
671 | if (chptr != NULL) | |
672 | { | |
673 | sendto_one_numeric(source_p, ERR_BANNICKCHANGE, | |
674 | form_str(ERR_BANNICKCHANGE), | |
675 | nick, chptr->chname); | |
676 | return; | |
677 | } | |
e3354945 | 678 | if((source_p->localClient->last_nick_change + ConfigFileEntry.max_nick_time) < rb_current_time()) |
212380e3 AC |
679 | source_p->localClient->number_of_nick_changes = 0; |
680 | ||
e3354945 | 681 | source_p->localClient->last_nick_change = rb_current_time(); |
212380e3 AC |
682 | source_p->localClient->number_of_nick_changes++; |
683 | ||
684 | if(ConfigFileEntry.anti_nick_flood && !IsOper(source_p) && | |
685 | source_p->localClient->number_of_nick_changes > ConfigFileEntry.max_nick_changes) | |
686 | { | |
687 | sendto_one(source_p, form_str(ERR_NICKTOOFAST), | |
688 | me.name, source_p->name, source_p->name, | |
689 | nick, ConfigFileEntry.max_nick_time); | |
690 | return; | |
691 | } | |
692 | } | |
693 | ||
694 | samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
695 | ||
696 | /* dont reset TS if theyre just changing case of nick */ | |
697 | if(!samenick) | |
698 | { | |
95ffa685 | 699 | /* force the TS to increase -- jilles */ |
e3354945 | 700 | if (source_p->tsinfo >= rb_current_time()) |
95ffa685 JT |
701 | source_p->tsinfo++; |
702 | else | |
e3354945 | 703 | source_p->tsinfo = rb_current_time(); |
212380e3 AC |
704 | monitor_signoff(source_p); |
705 | /* we only do bancache for local users -- jilles */ | |
706 | if(source_p->user) | |
707 | invalidate_bancache_user(source_p); | |
708 | } | |
709 | ||
710 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
711 | "Nick change: From %s to %s [%s@%s]", | |
712 | source_p->name, nick, source_p->username, source_p->host); | |
713 | ||
714 | /* send the nick change to the users channels */ | |
7a948bda | 715 | sendto_common_channels_local(source_p, NOCAPS, ":%s!%s@%s NICK :%s", |
212380e3 AC |
716 | source_p->name, source_p->username, source_p->host, nick); |
717 | ||
718 | /* send the nick change to servers.. */ | |
719 | if(source_p->user) | |
720 | { | |
721 | add_history(source_p, 1); | |
722 | ||
723 | if (dosend) | |
724 | { | |
725 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
726 | use_id(source_p), nick, (long) source_p->tsinfo); | |
212380e3 AC |
727 | } |
728 | } | |
729 | ||
730 | /* Finally, add to hash */ | |
731 | del_from_client_hash(source_p->name, source_p); | |
732 | strcpy(source_p->name, nick); | |
733 | add_to_client_hash(nick, source_p); | |
734 | ||
735 | if(!samenick) | |
736 | monitor_signon(source_p); | |
737 | ||
738 | /* Make sure everyone that has this client on its accept list | |
55abcbb2 | 739 | * loses that reference. |
212380e3 AC |
740 | */ |
741 | /* we used to call del_all_accepts() here, but theres no real reason | |
742 | * to clear a clients own list of accepted clients. So just remove | |
743 | * them from everyone elses list --anfl | |
744 | */ | |
637c4932 | 745 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->on_allow_list.head) |
212380e3 AC |
746 | { |
747 | target_p = ptr->data; | |
748 | ||
555ac41f JT |
749 | rb_dlinkFindDestroy(source_p, &target_p->localClient->allow_list); |
750 | rb_dlinkDestroy(ptr, &source_p->on_allow_list); | |
212380e3 AC |
751 | } |
752 | ||
0e7cb7e6 JT |
753 | rb_snprintf(note, sizeof(note), "Nick: %s", nick); |
754 | rb_note(client_p->localClient->F, note); | |
212380e3 AC |
755 | |
756 | return; | |
757 | } | |
758 | ||
759 | /* | |
760 | * change_remote_nick() | |
761 | */ | |
762 | static int | |
763 | change_remote_nick(struct Client *client_p, struct Client *source_p, | |
764 | time_t newts, const char *nick, int dosend) | |
765 | { | |
766 | struct nd_entry *nd; | |
767 | int samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
768 | ||
769 | /* client changing their nick - dont reset ts if its same */ | |
770 | if(!samenick) | |
771 | { | |
e3354945 | 772 | source_p->tsinfo = newts ? newts : rb_current_time(); |
212380e3 AC |
773 | monitor_signoff(source_p); |
774 | } | |
775 | ||
7a948bda | 776 | sendto_common_channels_local(source_p, NOCAPS, ":%s!%s@%s NICK :%s", |
212380e3 AC |
777 | source_p->name, source_p->username, source_p->host, nick); |
778 | ||
779 | if(source_p->user) | |
780 | { | |
781 | add_history(source_p, 1); | |
782 | if (dosend) | |
783 | { | |
784 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
785 | use_id(source_p), nick, (long) source_p->tsinfo); | |
212380e3 AC |
786 | } |
787 | } | |
788 | ||
789 | del_from_client_hash(source_p->name, source_p); | |
790 | ||
791 | /* invalidate nick delay when a remote client uses the nick.. */ | |
b37021a4 | 792 | if((nd = irc_dictionary_retrieve(nd_dict, nick))) |
212380e3 AC |
793 | free_nd_entry(nd); |
794 | ||
795 | strcpy(source_p->name, nick); | |
796 | add_to_client_hash(nick, source_p); | |
797 | ||
798 | if(!samenick) | |
799 | monitor_signon(source_p); | |
800 | ||
801 | /* remove all accepts pointing to the client */ | |
802 | del_all_accepts(source_p); | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | static int | |
808 | perform_nick_collides(struct Client *source_p, struct Client *client_p, | |
809 | struct Client *target_p, int parc, const char *parv[], | |
810 | time_t newts, const char *nick, const char *uid) | |
811 | { | |
812 | int sameuser; | |
813 | int use_save; | |
814 | const char *action; | |
815 | ||
816 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
817 | uid != NULL && can_save(source_p); | |
818 | action = use_save ? "saved" : "killed"; | |
819 | ||
820 | /* if we dont have a ts, or their TS's are the same, kill both */ | |
821 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) | |
822 | { | |
9d107a71 | 823 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
824 | "Nick collision on %s(%s <- %s)(both %s)", |
825 | target_p->name, target_p->from->name, client_p->name, action); | |
826 | ||
827 | if (use_save) | |
828 | { | |
829 | save_user(&me, &me, target_p); | |
47adde3d | 830 | ServerStats.is_save++; |
212380e3 AC |
831 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, |
832 | uid, (long)newts); | |
833 | register_client(client_p, source_p, | |
3f7e0642 | 834 | uid, SAVE_NICKTS, parc, parv); |
212380e3 AC |
835 | } |
836 | else | |
837 | { | |
838 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
839 | form_str(ERR_NICKCOLLISION), target_p->name); | |
840 | ||
841 | /* if the new client being introduced has a UID, we need to | |
842 | * issue a KILL for it.. | |
843 | */ | |
844 | if(uid) | |
845 | sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", | |
846 | me.id, uid, me.name); | |
847 | ||
848 | /* we then need to KILL the old client everywhere */ | |
849 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (new))", me.name); | |
47adde3d | 850 | ServerStats.is_kill++; |
212380e3 AC |
851 | |
852 | target_p->flags |= FLAGS_KILLED; | |
853 | exit_client(client_p, target_p, &me, "Nick collision (new)"); | |
854 | } | |
855 | return 0; | |
856 | } | |
857 | /* the timestamps are different */ | |
858 | else | |
859 | { | |
860 | sameuser = (target_p->user) && !irccmp(target_p->username, parv[5]) | |
861 | && !irccmp(target_p->host, parv[6]); | |
862 | ||
863 | if((sameuser && newts < target_p->tsinfo) || | |
864 | (!sameuser && newts > target_p->tsinfo)) | |
865 | { | |
866 | /* if we have a UID, then we need to issue a KILL, | |
867 | * otherwise we do nothing and hope that the other | |
868 | * client will collide it.. | |
869 | */ | |
870 | if (use_save) | |
871 | { | |
872 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
873 | uid, (long)newts); | |
874 | register_client(client_p, source_p, | |
3f7e0642 | 875 | uid, SAVE_NICKTS, parc, parv); |
212380e3 AC |
876 | } |
877 | else if(uid) | |
878 | sendto_one(client_p, | |
879 | ":%s KILL %s :%s (Nick collision (new))", | |
880 | me.id, uid, me.name); | |
881 | return 0; | |
882 | } | |
883 | else | |
884 | { | |
885 | if(sameuser) | |
9d107a71 | 886 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
887 | "Nick collision on %s(%s <- %s)(older %s)", |
888 | target_p->name, target_p->from->name, | |
889 | client_p->name, action); | |
890 | else | |
9d107a71 | 891 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
892 | "Nick collision on %s(%s <- %s)(newer %s)", |
893 | target_p->name, target_p->from->name, | |
894 | client_p->name, action); | |
895 | ||
896 | if (use_save) | |
897 | { | |
47adde3d | 898 | ServerStats.is_save++; |
212380e3 AC |
899 | save_user(&me, &me, target_p); |
900 | } | |
901 | else | |
902 | { | |
47adde3d | 903 | ServerStats.is_kill++; |
212380e3 AC |
904 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, |
905 | form_str(ERR_NICKCOLLISION), target_p->name); | |
906 | ||
907 | /* now we just need to kill the existing client */ | |
908 | kill_client_serv_butone(client_p, target_p, | |
909 | "%s (Nick collision (new))", me.name); | |
910 | ||
911 | target_p->flags |= FLAGS_KILLED; | |
912 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
913 | } | |
914 | ||
463947ad | 915 | register_client(client_p, source_p, |
212380e3 AC |
916 | nick, newts, parc, parv); |
917 | ||
918 | return 0; | |
919 | } | |
920 | } | |
921 | } | |
922 | ||
923 | ||
924 | static int | |
925 | perform_nickchange_collides(struct Client *source_p, struct Client *client_p, | |
926 | struct Client *target_p, int parc, | |
927 | const char *parv[], time_t newts, const char *nick) | |
928 | { | |
929 | int sameuser; | |
930 | int use_save; | |
931 | const char *action; | |
932 | ||
933 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
934 | can_save(source_p); | |
935 | action = use_save ? "saved" : "killed"; | |
936 | ||
937 | /* its a client changing nick and causing a collide */ | |
938 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo) || !source_p->user) | |
939 | { | |
9d107a71 | 940 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
941 | "Nick change collision from %s to %s(%s <- %s)(both %s)", |
942 | source_p->name, target_p->name, target_p->from->name, | |
943 | client_p->name, action); | |
944 | ||
945 | if (use_save) | |
946 | { | |
47adde3d | 947 | ServerStats.is_save += 2; |
212380e3 AC |
948 | save_user(&me, &me, target_p); |
949 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
950 | source_p->id, (long)newts); | |
951 | /* don't send a redundant nick change */ | |
952 | if (!IsDigit(source_p->name[0])) | |
3f7e0642 | 953 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); |
212380e3 AC |
954 | } |
955 | else | |
956 | { | |
47adde3d | 957 | ServerStats.is_kill++; |
212380e3 AC |
958 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, |
959 | form_str(ERR_NICKCOLLISION), target_p->name); | |
960 | ||
961 | kill_client_serv_butone(NULL, source_p, "%s (Nick change collision)", me.name); | |
962 | ||
47adde3d | 963 | ServerStats.is_kill++; |
212380e3 AC |
964 | |
965 | kill_client_serv_butone(NULL, target_p, "%s (Nick change collision)", me.name); | |
966 | ||
967 | target_p->flags |= FLAGS_KILLED; | |
968 | exit_client(NULL, target_p, &me, "Nick collision(new)"); | |
969 | source_p->flags |= FLAGS_KILLED; | |
970 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
971 | } | |
972 | return 0; | |
973 | } | |
974 | else | |
975 | { | |
976 | sameuser = !irccmp(target_p->username, source_p->username) && | |
977 | !irccmp(target_p->host, source_p->host); | |
978 | ||
979 | if((sameuser && newts < target_p->tsinfo) || | |
980 | (!sameuser && newts > target_p->tsinfo)) | |
981 | { | |
982 | if(sameuser) | |
9d107a71 | 983 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
984 | "Nick change collision from %s to %s(%s <- %s)(older %s)", |
985 | source_p->name, target_p->name, | |
986 | target_p->from->name, client_p->name, action); | |
987 | else | |
9d107a71 | 988 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
989 | "Nick change collision from %s to %s(%s <- %s)(newer %s)", |
990 | source_p->name, target_p->name, | |
991 | target_p->from->name, client_p->name, action); | |
992 | ||
993 | if (use_save) | |
994 | { | |
47adde3d | 995 | ServerStats.is_save++; |
212380e3 AC |
996 | /* can't broadcast a SAVE because the |
997 | * nickchange has happened at client_p | |
998 | * but not in other directions -- jilles */ | |
999 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
1000 | source_p->id, (long)newts); | |
212380e3 AC |
1001 | /* send a :<id> NICK <id> <ts> (!) */ |
1002 | if (!IsDigit(source_p->name[0])) | |
3f7e0642 | 1003 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); |
212380e3 AC |
1004 | } |
1005 | else | |
1006 | { | |
47adde3d | 1007 | ServerStats.is_kill++; |
212380e3 | 1008 | |
ce782b68 JT |
1009 | sendto_one_numeric(source_p, ERR_NICKCOLLISION, |
1010 | form_str(ERR_NICKCOLLISION), source_p->name); | |
212380e3 AC |
1011 | |
1012 | /* kill the client issuing the nickchange */ | |
1013 | kill_client_serv_butone(client_p, source_p, | |
1014 | "%s (Nick change collision)", me.name); | |
1015 | ||
1016 | source_p->flags |= FLAGS_KILLED; | |
1017 | ||
1018 | if(sameuser) | |
1019 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
1020 | else | |
1021 | exit_client(client_p, source_p, &me, "Nick collision(new)"); | |
1022 | } | |
1023 | return 0; | |
1024 | } | |
1025 | else | |
1026 | { | |
1027 | if(sameuser) | |
9d107a71 | 1028 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
1029 | "Nick collision on %s(%s <- %s)(older %s)", |
1030 | target_p->name, target_p->from->name, | |
1031 | client_p->name, action); | |
1032 | else | |
9d107a71 | 1033 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
1034 | "Nick collision on %s(%s <- %s)(newer %s)", |
1035 | target_p->name, target_p->from->name, | |
1036 | client_p->name, action); | |
1037 | ||
1038 | if (use_save) | |
1039 | { | |
47adde3d | 1040 | ServerStats.is_save++; |
212380e3 AC |
1041 | save_user(&me, &me, target_p); |
1042 | } | |
1043 | else | |
1044 | { | |
1045 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
1046 | form_str(ERR_NICKCOLLISION), target_p->name); | |
1047 | ||
1048 | /* kill the client who existed before hand */ | |
1049 | kill_client_serv_butone(client_p, target_p, "%s (Nick collision)", me.name); | |
1050 | ||
47adde3d | 1051 | ServerStats.is_kill++; |
212380e3 AC |
1052 | |
1053 | target_p->flags |= FLAGS_KILLED; | |
1054 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1055 | } | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | change_remote_nick(client_p, source_p, newts, nick, 1); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static int | |
1065 | register_client(struct Client *client_p, struct Client *server, | |
1066 | const char *nick, time_t newts, int parc, const char *parv[]) | |
1067 | { | |
1068 | struct Client *source_p; | |
1069 | struct User *user; | |
1070 | struct nd_entry *nd; | |
1071 | const char *m; | |
1072 | int flag; | |
1073 | ||
1074 | source_p = make_client(client_p); | |
1075 | user = make_user(source_p); | |
0e7cb7e6 | 1076 | rb_dlinkAddTail(source_p, &source_p->node, &global_client_list); |
212380e3 AC |
1077 | |
1078 | source_p->hopcount = atoi(parv[2]); | |
1079 | source_p->tsinfo = newts; | |
1080 | ||
1081 | strcpy(source_p->name, nick); | |
f427c8b0 VY |
1082 | rb_strlcpy(source_p->username, parv[5], sizeof(source_p->username)); |
1083 | rb_strlcpy(source_p->host, parv[6], sizeof(source_p->host)); | |
1084 | rb_strlcpy(source_p->orighost, source_p->host, sizeof(source_p->orighost)); | |
212380e3 AC |
1085 | |
1086 | if(parc == 12) | |
1087 | { | |
f427c8b0 VY |
1088 | rb_strlcpy(source_p->info, parv[11], sizeof(source_p->info)); |
1089 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1090 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
212380e3 AC |
1091 | add_to_id_hash(source_p->id, source_p); |
1092 | if (strcmp(parv[9], "*")) | |
1093 | { | |
f427c8b0 | 1094 | rb_strlcpy(source_p->orighost, parv[9], sizeof(source_p->orighost)); |
212380e3 AC |
1095 | if (irccmp(source_p->host, source_p->orighost)) |
1096 | SetDynSpoof(source_p); | |
1097 | } | |
1098 | if (strcmp(parv[10], "*")) | |
f427c8b0 | 1099 | rb_strlcpy(source_p->user->suser, parv[10], sizeof(source_p->user->suser)); |
212380e3 AC |
1100 | } |
1101 | else if(parc == 10) | |
1102 | { | |
f427c8b0 VY |
1103 | rb_strlcpy(source_p->info, parv[9], sizeof(source_p->info)); |
1104 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1105 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
212380e3 AC |
1106 | add_to_id_hash(source_p->id, source_p); |
1107 | } | |
1108 | else | |
1109 | { | |
463947ad | 1110 | s_assert(0); |
212380e3 AC |
1111 | } |
1112 | ||
1113 | /* remove any nd entries for this nick */ | |
b37021a4 | 1114 | if((nd = irc_dictionary_retrieve(nd_dict, nick))) |
212380e3 AC |
1115 | free_nd_entry(nd); |
1116 | ||
1117 | add_to_client_hash(nick, source_p); | |
66b4a7ae | 1118 | add_to_hostname_hash(source_p->orighost, source_p); |
212380e3 AC |
1119 | monitor_signon(source_p); |
1120 | ||
1121 | m = &parv[4][1]; | |
1122 | while(*m) | |
1123 | { | |
1124 | flag = user_modes[(unsigned char) *m]; | |
1125 | ||
1126 | if(flag & UMODE_SERVICE) | |
1127 | { | |
1128 | int hit = 0; | |
5b96d9a6 | 1129 | rb_dlink_node *ptr; |
212380e3 | 1130 | |
5b96d9a6 | 1131 | RB_DLINK_FOREACH(ptr, service_list.head) |
212380e3 | 1132 | { |
c88cdb00 | 1133 | if(!irccmp((const char *) ptr->data, server->name)) |
212380e3 AC |
1134 | { |
1135 | hit++; | |
1136 | break; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | if(!hit) | |
1141 | { | |
1142 | m++; | |
1143 | continue; | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | /* increment +i count if theyre invis */ | |
1148 | if(!(source_p->umodes & UMODE_INVISIBLE) && (flag & UMODE_INVISIBLE)) | |
1149 | Count.invisi++; | |
1150 | ||
1151 | /* increment opered count if theyre opered */ | |
1152 | if(!(source_p->umodes & UMODE_OPER) && (flag & UMODE_OPER)) | |
1153 | Count.oper++; | |
1154 | ||
1155 | source_p->umodes |= flag; | |
1156 | m++; | |
1157 | } | |
1158 | ||
1159 | if(IsOper(source_p) && !IsService(source_p)) | |
0e7cb7e6 | 1160 | rb_dlinkAddAlloc(source_p, &oper_list); |
212380e3 AC |
1161 | |
1162 | SetRemoteClient(source_p); | |
1163 | ||
1164 | if(++Count.total > Count.max_tot) | |
1165 | Count.max_tot = Count.total; | |
1166 | ||
64449595 | 1167 | source_p->servptr = server; |
212380e3 | 1168 | |
0e7cb7e6 | 1169 | rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users); |
212380e3 | 1170 | |
212380e3 AC |
1171 | call_hook(h_new_remote_user, source_p); |
1172 | ||
1173 | return (introduce_client(client_p, source_p, user, nick, parc == 12)); | |
1174 | } | |
1175 | ||
1176 | /* Check if we can do SAVE. target_p can be a client to save or a | |
1177 | * server introducing a client -- jilles */ | |
1178 | static int | |
1179 | can_save(struct Client *target_p) | |
1180 | { | |
1181 | struct Client *serv_p; | |
1182 | ||
1183 | if (MyClient(target_p)) | |
1184 | return 1; | |
1185 | if (!has_id(target_p)) | |
1186 | return 0; | |
1187 | serv_p = IsServer(target_p) ? target_p : target_p->servptr; | |
1188 | while (serv_p != NULL && serv_p != &me) | |
1189 | { | |
1190 | if (!(serv_p->serv->caps & CAP_SAVE)) | |
1191 | return 0; | |
1192 | serv_p = serv_p->servptr; | |
1193 | } | |
1194 | return serv_p == &me; | |
1195 | } | |
1196 | ||
1197 | static void | |
1198 | save_user(struct Client *client_p, struct Client *source_p, | |
1199 | struct Client *target_p) | |
1200 | { | |
1201 | if (!MyConnect(target_p) && (!has_id(target_p) || !IsCapable(target_p->from, CAP_SAVE))) | |
1202 | { | |
1203 | /* This shouldn't happen */ | |
1204 | /* Note we only need SAVE support in this direction */ | |
1205 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1206 | "Killed %s!%s@%s for nick collision detected by %s (%s does not support SAVE)", | |
1207 | target_p->name, target_p->username, target_p->host, source_p->name, target_p->from->name); | |
1208 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (no SAVE support))", me.name); | |
47adde3d | 1209 | ServerStats.is_kill++; |
212380e3 AC |
1210 | |
1211 | target_p->flags |= FLAGS_KILLED; | |
1212 | (void) exit_client(NULL, target_p, &me, "Nick collision (no SAVE support)"); | |
1213 | return; | |
1214 | } | |
1215 | sendto_server(client_p, NULL, CAP_SAVE|CAP_TS6, NOCAPS, ":%s SAVE %s %ld", | |
1216 | source_p->id, target_p->id, (long)target_p->tsinfo); | |
1217 | sendto_server(client_p, NULL, CAP_TS6, CAP_SAVE, ":%s NICK %s :%ld", | |
3f7e0642 | 1218 | target_p->id, target_p->id, (long)SAVE_NICKTS); |
212380e3 AC |
1219 | if (!IsMe(client_p)) |
1220 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1221 | "Received SAVE message for %s from %s", | |
1222 | target_p->name, source_p->name); | |
1223 | if (MyClient(target_p)) | |
1224 | { | |
1225 | sendto_one_numeric(target_p, RPL_SAVENICK, | |
1226 | form_str(RPL_SAVENICK), target_p->id); | |
1227 | change_local_nick(target_p, target_p, target_p->id, 0); | |
3f7e0642 | 1228 | target_p->tsinfo = SAVE_NICKTS; |
212380e3 AC |
1229 | } |
1230 | else | |
3f7e0642 | 1231 | change_remote_nick(target_p, target_p, SAVE_NICKTS, target_p->id, 0); |
212380e3 | 1232 | } |
ad35b2cd JT |
1233 | |
1234 | static void bad_nickname(struct Client *client_p, const char *nick) | |
1235 | { | |
1236 | char squitreason[100]; | |
1237 | ||
1238 | sendto_wallops_flags(UMODE_WALLOP, &me, | |
1239 | "Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1240 | client_p->name, nick); | |
1241 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
1242 | ":%s WALLOPS :Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1243 | me.id, client_p->name, nick); | |
4dd5d304 JT |
1244 | ilog(L_SERVER, "Link %s cancelled, bad nickname %s sent (NICKLEN mismatch?)", |
1245 | client_p->name, nick); | |
ad35b2cd JT |
1246 | |
1247 | rb_snprintf(squitreason, sizeof squitreason, | |
1248 | "Bad nickname introduced [%s]", nick); | |
1249 | exit_client(client_p, client_p, &me, squitreason); | |
1250 | } |