2 * ircd-ratbox: A slightly useful ircd.
3 * m_nick.c: Sets a users nick.
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
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.
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.
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
24 * $Id: m_nick.c 3518 2007-06-22 21:59:09Z jilles $
48 #include "s_newconf.h"
51 /* Give all UID nicks the same TS. This ensures nick TS is always the same on
52 * all servers for each nick-user pair, also if a user with a UID nick changes
53 * their nick but is collided again (the server detecting the collision will
54 * not propagate the nick change further). -- jilles
56 #define SAVE_NICKTS 100
58 static int mr_nick(struct Client
*, struct Client
*, int, const char **);
59 static int m_nick(struct Client
*, struct Client
*, int, const char **);
60 static int mc_nick(struct Client
*, struct Client
*, int, const char **);
61 static int ms_nick(struct Client
*, struct Client
*, int, const char **);
62 static int ms_uid(struct Client
*, struct Client
*, int, const char **);
63 static int ms_euid(struct Client
*, struct Client
*, int, const char **);
64 static int ms_save(struct Client
*, struct Client
*, int, const char **);
65 static int can_save(struct Client
*);
66 static void save_user(struct Client
*, struct Client
*, struct Client
*);
67 static void bad_nickname(struct Client
*, const char *);
69 struct Message nick_msgtab
= {
70 "NICK", 0, 0, 0, MFLG_SLOW
,
71 {{mr_nick
, 0}, {m_nick
, 0}, {mc_nick
, 3}, {ms_nick
, 8}, mg_ignore
, {m_nick
, 0}}
73 struct Message uid_msgtab
= {
74 "UID", 0, 0, 0, MFLG_SLOW
,
75 {mg_ignore
, mg_ignore
, mg_ignore
, {ms_uid
, 9}, mg_ignore
, mg_ignore
}
77 struct Message euid_msgtab
= {
78 "EUID", 0, 0, 0, MFLG_SLOW
,
79 {mg_ignore
, mg_ignore
, mg_ignore
, {ms_euid
, 12}, mg_ignore
, mg_ignore
}
81 struct Message save_msgtab
= {
82 "SAVE", 0, 0, 0, MFLG_SLOW
,
83 {mg_ignore
, mg_ignore
, mg_ignore
, {ms_save
, 3}, mg_ignore
, mg_ignore
}
86 mapi_clist_av1 nick_clist
[] = { &nick_msgtab
, &uid_msgtab
, &euid_msgtab
,
89 DECLARE_MODULE_AV1(nick
, NULL
, NULL
, nick_clist
, NULL
, NULL
, "$Revision: 3518 $");
91 static int change_remote_nick(struct Client
*, struct Client
*, time_t,
94 static int clean_nick(const char *, int loc_client
);
95 static int clean_username(const char *);
96 static int clean_host(const char *);
97 static int clean_uid(const char *uid
);
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
[]);
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 *);
111 * parv[0] = sender prefix
115 mr_nick(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
117 struct Client
*target_p
;
121 if (strlen(client_p
->id
) == 3)
123 exit_client(client_p
, client_p
, client_p
, "Mixing client and server protocol");
127 if(parc
< 2 || EmptyString(parv
[1]) || (parv
[1][0] == '~'))
129 sendto_one(source_p
, form_str(ERR_NONICKNAMEGIVEN
),
130 me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
);
134 /* due to the scandinavian origins, (~ being uppercase of ^) and ~
135 * being disallowed as a nick char, we need to chop the first ~
136 * instead of just erroring.
138 if((s
= strchr(parv
[1], '~')))
141 /* copy the nick and terminate it */
142 rb_strlcpy(nick
, parv
[1], sizeof(nick
));
144 /* check the nickname is ok */
145 if(!clean_nick(nick
, 1))
147 sendto_one(source_p
, form_str(ERR_ERRONEUSNICKNAME
),
148 me
.name
, EmptyString(parv
[0]) ? "*" : parv
[0], parv
[1]);
152 /* check if the nick is resv'd */
153 if(find_nick_resv(nick
))
155 sendto_one(source_p
, form_str(ERR_ERRONEUSNICKNAME
),
156 me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
, nick
);
160 if(irc_dictionary_find(nd_dict
, nick
))
162 sendto_one(source_p
, form_str(ERR_UNAVAILRESOURCE
),
163 me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
, nick
);
167 if((target_p
= find_named_client(nick
)) == NULL
)
168 set_initial_nick(client_p
, source_p
, nick
);
169 else if(source_p
== target_p
)
170 strcpy(source_p
->name
, nick
);
172 sendto_one(source_p
, form_str(ERR_NICKNAMEINUSE
), me
.name
, "*", nick
);
178 * parv[0] = sender prefix
182 m_nick(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
184 struct Client
*target_p
;
188 if(parc
< 2 || EmptyString(parv
[1]) || (parv
[1][0] == '~'))
190 sendto_one(source_p
, form_str(ERR_NONICKNAMEGIVEN
), me
.name
, source_p
->name
);
194 /* due to the scandinavian origins, (~ being uppercase of ^) and ~
195 * being disallowed as a nick char, we need to chop the first ~
196 * instead of just erroring.
198 if((s
= strchr(parv
[1], '~')))
201 /* mark end of grace period, to prevent nickflooding */
202 if(!IsFloodDone(source_p
))
203 flood_endgrace(source_p
);
205 /* terminate nick to NICKLEN, we dont want clean_nick() to error! */
206 rb_strlcpy(nick
, parv
[1], sizeof(nick
));
208 /* check the nickname is ok */
209 if(!clean_nick(nick
, 1))
211 sendto_one(source_p
, form_str(ERR_ERRONEUSNICKNAME
), me
.name
, parv
[0], nick
);
215 if(!IsExemptResv(source_p
) && find_nick_resv(nick
))
217 sendto_one(source_p
, form_str(ERR_ERRONEUSNICKNAME
), me
.name
, source_p
->name
, nick
);
221 if(irc_dictionary_find(nd_dict
, nick
))
223 sendto_one(source_p
, form_str(ERR_UNAVAILRESOURCE
),
224 me
.name
, EmptyString(source_p
->name
) ? "*" : source_p
->name
, nick
);
228 if((target_p
= find_named_client(nick
)))
230 /* If(target_p == source_p) the client is changing nicks between
231 * equivalent nicknames ie: [nick] -> {nick}
233 if(target_p
== source_p
)
235 /* check the nick isnt exactly the same */
236 if(strcmp(target_p
->name
, nick
))
237 change_local_nick(client_p
, source_p
, nick
, 1);
241 /* drop unregged client */
242 else if(IsUnknown(target_p
))
244 exit_client(NULL
, target_p
, &me
, "Overridden");
245 change_local_nick(client_p
, source_p
, nick
, 1);
248 sendto_one(source_p
, form_str(ERR_NICKNAMEINUSE
), me
.name
, parv
[0], nick
);
253 change_local_nick(client_p
, source_p
, nick
, 1);
260 * server -> server nick change
261 * parv[0] = sender prefix
263 * parv[2] = TS when nick change
265 * server introducing new nick
266 * parv[0] = sender prefix
268 * parv[2] = hop count
277 mc_nick(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
279 struct Client
*target_p
;
282 /* if nicks erroneous, or too long, kill */
283 if(!clean_nick(parv
[1], 0))
285 bad_nickname(client_p
, parv
[1]);
289 newts
= atol(parv
[2]);
290 target_p
= find_named_client(parv
[1]);
292 /* if the nick doesnt exist, allow it and process like normal */
295 change_remote_nick(client_p
, source_p
, newts
, parv
[1], 1);
297 else if(IsUnknown(target_p
))
299 exit_client(NULL
, target_p
, &me
, "Overridden");
300 change_remote_nick(client_p
, source_p
, newts
, parv
[1], 1);
302 else if(target_p
== source_p
)
304 /* client changing case of nick */
305 if(strcmp(target_p
->name
, parv
[1]))
306 change_remote_nick(client_p
, source_p
, newts
, parv
[1], 1);
308 /* we've got a collision! */
310 perform_nickchange_collides(source_p
, client_p
, target_p
,
311 parc
, parv
, newts
, parv
[1]);
317 ms_nick(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
319 struct Client
*target_p
;
321 char squitreason
[100];
325 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
326 "Dropping server %s due to (invalid) command 'NICK' "
327 "with %d arguments (expecting 9)", client_p
->name
, parc
);
328 ilog(L_SERVER
, "Excess parameters (%d) for command 'NICK' from %s.",
329 parc
, client_p
->name
);
330 rb_snprintf(squitreason
, sizeof squitreason
,
331 "Excess parameters (%d) to %s command, expecting %d",
333 exit_client(client_p
, client_p
, client_p
, squitreason
);
337 /* if nicks empty, erroneous, or too long, kill */
338 if(!clean_nick(parv
[1], 0))
340 bad_nickname(client_p
, parv
[1]);
344 /* invalid username or host? */
345 if(!clean_username(parv
[5]) || !clean_host(parv
[6]))
347 ServerStats
.is_kill
++;
348 sendto_realops_snomask(SNO_DEBUG
, L_ALL
,
349 "Bad user@host: %s@%s From: %s(via %s)",
350 parv
[5], parv
[6], parv
[7], client_p
->name
);
351 sendto_one(client_p
, ":%s KILL %s :%s (Bad user@host)", me
.name
, parv
[1], me
.name
);
355 /* check the length of the clients gecos */
356 if(strlen(parv
[8]) > REALLEN
)
358 char *s
= LOCAL_COPY(parv
[8]);
359 /* why exactly do we care? --fl */
360 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
361 "Long realname from server %s for %s", parv
[7], parv
[1]);
367 newts
= atol(parv
[3]);
369 target_p
= find_named_client(parv
[1]);
371 /* if the nick doesnt exist, allow it and process like normal */
374 register_client(client_p
, NULL
, parv
[1], newts
, parc
, parv
);
376 else if(IsUnknown(target_p
))
378 exit_client(NULL
, target_p
, &me
, "Overridden");
379 register_client(client_p
, NULL
, parv
[1], newts
, parc
, parv
);
381 else if(target_p
== source_p
)
383 /* client changing case of nick */
384 if(strcmp(target_p
->name
, parv
[1]))
385 register_client(client_p
, NULL
, parv
[1], newts
, parc
, parv
);
387 /* we've got a collision! */
389 perform_nick_collides(source_p
, client_p
, target_p
, parc
, parv
,
390 newts
, parv
[1], NULL
);
407 ms_uid(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
409 struct Client
*target_p
;
411 char squitreason
[120];
413 newts
= atol(parv
[3]);
417 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
418 "Dropping server %s due to (invalid) command 'UID' "
419 "with %d arguments (expecting 10)", client_p
->name
, parc
);
420 ilog(L_SERVER
, "Excess parameters (%d) for command 'UID' from %s.",
421 parc
, client_p
->name
);
422 rb_snprintf(squitreason
, sizeof squitreason
,
423 "Excess parameters (%d) to %s command, expecting %d",
425 exit_client(client_p
, client_p
, client_p
, squitreason
);
429 /* if nicks erroneous, or too long, kill */
430 if(!clean_nick(parv
[1], 0))
432 bad_nickname(client_p
, parv
[1]);
436 if(!clean_uid(parv
[8]))
438 rb_snprintf(squitreason
, sizeof squitreason
,
439 "Invalid UID %s for nick %s on %s",
440 parv
[8], parv
[1], source_p
->name
);
441 exit_client(client_p
, client_p
, client_p
, squitreason
);
445 if(!clean_username(parv
[5]) || !clean_host(parv
[6]))
447 ServerStats
.is_kill
++;
448 sendto_realops_snomask(SNO_DEBUG
, L_ALL
,
449 "Bad user@host: %s@%s From: %s(via %s)",
450 parv
[5], parv
[6], source_p
->name
, client_p
->name
);
451 sendto_one(client_p
, ":%s KILL %s :%s (Bad user@host)", me
.id
, parv
[8], me
.name
);
455 /* check length of clients gecos */
456 if(strlen(parv
[9]) > REALLEN
)
458 char *s
= LOCAL_COPY(parv
[9]);
459 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "Long realname from server %s for %s",
465 target_p
= find_named_client(parv
[1]);
469 register_client(client_p
, source_p
, parv
[1], newts
, parc
, parv
);
471 else if(IsUnknown(target_p
))
473 exit_client(NULL
, target_p
, &me
, "Overridden");
474 register_client(client_p
, source_p
, parv
[1], newts
, parc
, parv
);
476 /* we've got a collision! */
478 perform_nick_collides(source_p
, client_p
, target_p
, parc
, parv
,
479 newts
, parv
[1], parv
[8]);
498 ms_euid(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
500 struct Client
*target_p
;
502 char squitreason
[120];
504 newts
= atol(parv
[3]);
508 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
509 "Dropping server %s due to (invalid) command 'EUID' "
510 "with %d arguments (expecting 12)", client_p
->name
, parc
);
511 ilog(L_SERVER
, "Excess parameters (%d) for command 'EUID' from %s.",
512 parc
, client_p
->name
);
513 rb_snprintf(squitreason
, sizeof squitreason
,
514 "Excess parameters (%d) to %s command, expecting %d",
516 exit_client(client_p
, client_p
, client_p
, squitreason
);
520 /* if nicks erroneous, or too long, kill */
521 if(!clean_nick(parv
[1], 0))
523 bad_nickname(client_p
, parv
[1]);
527 if(!clean_uid(parv
[8]))
529 rb_snprintf(squitreason
, sizeof squitreason
,
530 "Invalid UID %s for nick %s on %s",
531 parv
[8], parv
[1], source_p
->name
);
532 exit_client(client_p
, client_p
, client_p
, squitreason
);
536 if(!clean_username(parv
[5]) || !clean_host(parv
[6]))
538 ServerStats
.is_kill
++;
539 sendto_realops_snomask(SNO_DEBUG
, L_ALL
,
540 "Bad user@host: %s@%s From: %s(via %s)",
541 parv
[5], parv
[6], source_p
->name
, client_p
->name
);
542 sendto_one(client_p
, ":%s KILL %s :%s (Bad user@host)", me
.id
, parv
[8], me
.name
);
546 if(strcmp(parv
[9], "*") && !clean_host(parv
[9]))
548 ServerStats
.is_kill
++;
549 sendto_realops_snomask(SNO_DEBUG
, L_ALL
,
550 "Bad realhost: %s From: %s(via %s)",
551 parv
[9], source_p
->name
, client_p
->name
);
552 sendto_one(client_p
, ":%s KILL %s :%s (Bad user@host)", me
.id
, parv
[8], me
.name
);
556 /* check length of clients gecos */
557 if(strlen(parv
[11]) > REALLEN
)
559 char *s
= LOCAL_COPY(parv
[11]);
560 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "Long realname from server %s for %s",
566 target_p
= find_named_client(parv
[1]);
570 register_client(client_p
, source_p
, parv
[1], newts
, parc
, parv
);
572 else if(IsUnknown(target_p
))
574 exit_client(NULL
, target_p
, &me
, "Overridden");
575 register_client(client_p
, source_p
, parv
[1], newts
, parc
, parv
);
577 /* we've got a collision! */
579 perform_nick_collides(source_p
, client_p
, target_p
, parc
, parv
,
580 newts
, parv
[1], parv
[8]);
590 ms_save(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
592 struct Client
*target_p
;
594 target_p
= find_id(parv
[1]);
595 if (target_p
== NULL
)
597 if (!IsPerson(target_p
))
598 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
599 "Ignored SAVE message for non-person %s from %s",
600 target_p
->name
, source_p
->name
);
601 else if (IsDigit(target_p
->name
[0]))
602 sendto_realops_snomask(SNO_DEBUG
, L_ALL
,
603 "Ignored noop SAVE message for %s from %s",
604 target_p
->name
, source_p
->name
);
605 else if (target_p
->tsinfo
== atol(parv
[2]))
606 save_user(client_p
, source_p
, target_p
);
608 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
609 "Ignored SAVE message for %s from %s",
610 target_p
->name
, source_p
->name
);
616 * input - nickname to check
617 * output - 0 if erroneous, else 1
621 clean_nick(const char *nick
, int loc_client
)
625 /* nicks cant start with a digit or -, and must have a length */
626 if(*nick
== '-' || *nick
== '\0')
629 if(loc_client
&& IsDigit(*nick
))
635 if(!IsNickChar(*nick
))
648 * input - username to check
649 * output - 0 if erroneous, else 0
653 clean_username(const char *username
)
657 for(; *username
; username
++)
661 if(!IsUserChar(*username
))
673 * input - host to check
674 * output - 0 if erroneous, else 0
678 clean_host(const char *host
)
686 if(!IsHostChar(*host
))
697 clean_uid(const char *uid
)
719 set_initial_nick(struct Client
*client_p
, struct Client
*source_p
, char *nick
)
721 char buf
[USERLEN
+ 1];
722 char note
[NICKLEN
+ 10];
724 /* This had to be copied here to avoid problems.. */
725 source_p
->tsinfo
= rb_current_time();
726 if(source_p
->name
[0])
727 del_from_client_hash(source_p
->name
, source_p
);
729 strcpy(source_p
->name
, nick
);
730 add_to_client_hash(nick
, source_p
);
732 rb_snprintf(note
, sizeof(note
), "Nick: %s", nick
);
733 rb_note(client_p
->localClient
->F
, note
);
735 if(source_p
->flags
& FLAGS_SENTUSER
)
737 rb_strlcpy(buf
, source_p
->username
, sizeof(buf
));
739 /* got user, heres nick. */
740 register_local_user(client_p
, source_p
, buf
);
746 change_local_nick(struct Client
*client_p
, struct Client
*source_p
,
747 char *nick
, int dosend
)
749 struct Client
*target_p
;
750 rb_dlink_node
*ptr
, *next_ptr
;
751 struct Channel
*chptr
;
752 char note
[NICKLEN
+ 10];
757 chptr
= find_bannickchange_channel(source_p
);
760 sendto_one_numeric(source_p
, ERR_BANNICKCHANGE
,
761 form_str(ERR_BANNICKCHANGE
),
762 nick
, chptr
->chname
);
765 if((source_p
->localClient
->last_nick_change
+ ConfigFileEntry
.max_nick_time
) < rb_current_time())
766 source_p
->localClient
->number_of_nick_changes
= 0;
768 source_p
->localClient
->last_nick_change
= rb_current_time();
769 source_p
->localClient
->number_of_nick_changes
++;
771 if(ConfigFileEntry
.anti_nick_flood
&& !IsOper(source_p
) &&
772 source_p
->localClient
->number_of_nick_changes
> ConfigFileEntry
.max_nick_changes
)
774 sendto_one(source_p
, form_str(ERR_NICKTOOFAST
),
775 me
.name
, source_p
->name
, source_p
->name
,
776 nick
, ConfigFileEntry
.max_nick_time
);
781 samenick
= irccmp(source_p
->name
, nick
) ? 0 : 1;
783 /* dont reset TS if theyre just changing case of nick */
786 /* force the TS to increase -- jilles */
787 if (source_p
->tsinfo
>= rb_current_time())
790 source_p
->tsinfo
= rb_current_time();
791 monitor_signoff(source_p
);
792 /* we only do bancache for local users -- jilles */
794 invalidate_bancache_user(source_p
);
797 sendto_realops_snomask(SNO_NCHANGE
, L_ALL
,
798 "Nick change: From %s to %s [%s@%s]",
799 source_p
->name
, nick
, source_p
->username
, source_p
->host
);
801 /* send the nick change to the users channels */
802 sendto_common_channels_local(source_p
, ":%s!%s@%s NICK :%s",
803 source_p
->name
, source_p
->username
, source_p
->host
, nick
);
805 /* send the nick change to servers.. */
808 add_history(source_p
, 1);
812 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
, ":%s NICK %s :%ld",
813 use_id(source_p
), nick
, (long) source_p
->tsinfo
);
817 /* Finally, add to hash */
818 del_from_client_hash(source_p
->name
, source_p
);
819 strcpy(source_p
->name
, nick
);
820 add_to_client_hash(nick
, source_p
);
823 monitor_signon(source_p
);
825 /* Make sure everyone that has this client on its accept list
826 * loses that reference.
828 /* we used to call del_all_accepts() here, but theres no real reason
829 * to clear a clients own list of accepted clients. So just remove
830 * them from everyone elses list --anfl
832 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, source_p
->on_allow_list
.head
)
834 target_p
= ptr
->data
;
836 rb_dlinkFindDestroy(source_p
, &target_p
->localClient
->allow_list
);
837 rb_dlinkDestroy(ptr
, &source_p
->on_allow_list
);
840 rb_snprintf(note
, sizeof(note
), "Nick: %s", nick
);
841 rb_note(client_p
->localClient
->F
, note
);
847 * change_remote_nick()
850 change_remote_nick(struct Client
*client_p
, struct Client
*source_p
,
851 time_t newts
, const char *nick
, int dosend
)
854 int samenick
= irccmp(source_p
->name
, nick
) ? 0 : 1;
856 /* client changing their nick - dont reset ts if its same */
859 source_p
->tsinfo
= newts
? newts
: rb_current_time();
860 monitor_signoff(source_p
);
863 sendto_common_channels_local(source_p
, ":%s!%s@%s NICK :%s",
864 source_p
->name
, source_p
->username
, source_p
->host
, nick
);
868 add_history(source_p
, 1);
871 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
, ":%s NICK %s :%ld",
872 use_id(source_p
), nick
, (long) source_p
->tsinfo
);
876 del_from_client_hash(source_p
->name
, source_p
);
878 /* invalidate nick delay when a remote client uses the nick.. */
879 if((nd
= irc_dictionary_retrieve(nd_dict
, nick
)))
882 strcpy(source_p
->name
, nick
);
883 add_to_client_hash(nick
, source_p
);
886 monitor_signon(source_p
);
888 /* remove all accepts pointing to the client */
889 del_all_accepts(source_p
);
895 perform_nick_collides(struct Client
*source_p
, struct Client
*client_p
,
896 struct Client
*target_p
, int parc
, const char *parv
[],
897 time_t newts
, const char *nick
, const char *uid
)
903 use_save
= ConfigFileEntry
.collision_fnc
&& can_save(target_p
) &&
904 uid
!= NULL
&& can_save(source_p
);
905 action
= use_save
? "saved" : "killed";
907 /* if we dont have a ts, or their TS's are the same, kill both */
908 if(!newts
|| !target_p
->tsinfo
|| (newts
== target_p
->tsinfo
))
910 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
911 "Nick collision on %s(%s <- %s)(both %s)",
912 target_p
->name
, target_p
->from
->name
, client_p
->name
, action
);
916 save_user(&me
, &me
, target_p
);
917 ServerStats
.is_save
++;
918 sendto_one(client_p
, ":%s SAVE %s %ld", me
.id
,
920 register_client(client_p
, source_p
,
921 uid
, SAVE_NICKTS
, parc
, parv
);
925 sendto_one_numeric(target_p
, ERR_NICKCOLLISION
,
926 form_str(ERR_NICKCOLLISION
), target_p
->name
);
928 /* if the new client being introduced has a UID, we need to
929 * issue a KILL for it..
932 sendto_one(client_p
, ":%s KILL %s :%s (Nick collision (new))",
933 me
.id
, uid
, me
.name
);
935 /* we then need to KILL the old client everywhere */
936 kill_client_serv_butone(NULL
, target_p
, "%s (Nick collision (new))", me
.name
);
937 ServerStats
.is_kill
++;
939 target_p
->flags
|= FLAGS_KILLED
;
940 exit_client(client_p
, target_p
, &me
, "Nick collision (new)");
944 /* the timestamps are different */
947 sameuser
= (target_p
->user
) && !irccmp(target_p
->username
, parv
[5])
948 && !irccmp(target_p
->host
, parv
[6]);
950 if((sameuser
&& newts
< target_p
->tsinfo
) ||
951 (!sameuser
&& newts
> target_p
->tsinfo
))
953 /* if we have a UID, then we need to issue a KILL,
954 * otherwise we do nothing and hope that the other
955 * client will collide it..
959 sendto_one(client_p
, ":%s SAVE %s %ld", me
.id
,
961 register_client(client_p
, source_p
,
962 uid
, SAVE_NICKTS
, parc
, parv
);
966 ":%s KILL %s :%s (Nick collision (new))",
967 me
.id
, uid
, me
.name
);
973 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
974 "Nick collision on %s(%s <- %s)(older %s)",
975 target_p
->name
, target_p
->from
->name
,
976 client_p
->name
, action
);
978 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
979 "Nick collision on %s(%s <- %s)(newer %s)",
980 target_p
->name
, target_p
->from
->name
,
981 client_p
->name
, action
);
985 ServerStats
.is_save
++;
986 save_user(&me
, &me
, target_p
);
990 ServerStats
.is_kill
++;
991 sendto_one_numeric(target_p
, ERR_NICKCOLLISION
,
992 form_str(ERR_NICKCOLLISION
), target_p
->name
);
994 /* now we just need to kill the existing client */
995 kill_client_serv_butone(client_p
, target_p
,
996 "%s (Nick collision (new))", me
.name
);
998 target_p
->flags
|= FLAGS_KILLED
;
999 (void) exit_client(client_p
, target_p
, &me
, "Nick collision");
1002 register_client(client_p
, parc
>= 10 ? source_p
: NULL
,
1003 nick
, newts
, parc
, parv
);
1012 perform_nickchange_collides(struct Client
*source_p
, struct Client
*client_p
,
1013 struct Client
*target_p
, int parc
,
1014 const char *parv
[], time_t newts
, const char *nick
)
1020 use_save
= ConfigFileEntry
.collision_fnc
&& can_save(target_p
) &&
1022 action
= use_save
? "saved" : "killed";
1024 /* its a client changing nick and causing a collide */
1025 if(!newts
|| !target_p
->tsinfo
|| (newts
== target_p
->tsinfo
) || !source_p
->user
)
1027 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
1028 "Nick change collision from %s to %s(%s <- %s)(both %s)",
1029 source_p
->name
, target_p
->name
, target_p
->from
->name
,
1030 client_p
->name
, action
);
1034 ServerStats
.is_save
+= 2;
1035 save_user(&me
, &me
, target_p
);
1036 sendto_one(client_p
, ":%s SAVE %s %ld", me
.id
,
1037 source_p
->id
, (long)newts
);
1038 /* don't send a redundant nick change */
1039 if (!IsDigit(source_p
->name
[0]))
1040 change_remote_nick(client_p
, source_p
, SAVE_NICKTS
, source_p
->id
, 1);
1044 ServerStats
.is_kill
++;
1045 sendto_one_numeric(target_p
, ERR_NICKCOLLISION
,
1046 form_str(ERR_NICKCOLLISION
), target_p
->name
);
1048 kill_client_serv_butone(NULL
, source_p
, "%s (Nick change collision)", me
.name
);
1050 ServerStats
.is_kill
++;
1052 kill_client_serv_butone(NULL
, target_p
, "%s (Nick change collision)", me
.name
);
1054 target_p
->flags
|= FLAGS_KILLED
;
1055 exit_client(NULL
, target_p
, &me
, "Nick collision(new)");
1056 source_p
->flags
|= FLAGS_KILLED
;
1057 exit_client(client_p
, source_p
, &me
, "Nick collision(old)");
1063 sameuser
= !irccmp(target_p
->username
, source_p
->username
) &&
1064 !irccmp(target_p
->host
, source_p
->host
);
1066 if((sameuser
&& newts
< target_p
->tsinfo
) ||
1067 (!sameuser
&& newts
> target_p
->tsinfo
))
1070 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
1071 "Nick change collision from %s to %s(%s <- %s)(older %s)",
1072 source_p
->name
, target_p
->name
,
1073 target_p
->from
->name
, client_p
->name
, action
);
1075 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
1076 "Nick change collision from %s to %s(%s <- %s)(newer %s)",
1077 source_p
->name
, target_p
->name
,
1078 target_p
->from
->name
, client_p
->name
, action
);
1082 ServerStats
.is_save
++;
1083 /* can't broadcast a SAVE because the
1084 * nickchange has happened at client_p
1085 * but not in other directions -- jilles */
1086 sendto_one(client_p
, ":%s SAVE %s %ld", me
.id
,
1087 source_p
->id
, (long)newts
);
1088 /* send a :<id> NICK <id> <ts> (!) */
1089 if (!IsDigit(source_p
->name
[0]))
1090 change_remote_nick(client_p
, source_p
, SAVE_NICKTS
, source_p
->id
, 1);
1094 ServerStats
.is_kill
++;
1096 sendto_one_numeric(target_p
, ERR_NICKCOLLISION
,
1097 form_str(ERR_NICKCOLLISION
), target_p
->name
);
1099 /* kill the client issuing the nickchange */
1100 kill_client_serv_butone(client_p
, source_p
,
1101 "%s (Nick change collision)", me
.name
);
1103 source_p
->flags
|= FLAGS_KILLED
;
1106 exit_client(client_p
, source_p
, &me
, "Nick collision(old)");
1108 exit_client(client_p
, source_p
, &me
, "Nick collision(new)");
1115 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
1116 "Nick collision on %s(%s <- %s)(older %s)",
1117 target_p
->name
, target_p
->from
->name
,
1118 client_p
->name
, action
);
1120 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
1121 "Nick collision on %s(%s <- %s)(newer %s)",
1122 target_p
->name
, target_p
->from
->name
,
1123 client_p
->name
, action
);
1127 ServerStats
.is_save
++;
1128 save_user(&me
, &me
, target_p
);
1132 sendto_one_numeric(target_p
, ERR_NICKCOLLISION
,
1133 form_str(ERR_NICKCOLLISION
), target_p
->name
);
1135 /* kill the client who existed before hand */
1136 kill_client_serv_butone(client_p
, target_p
, "%s (Nick collision)", me
.name
);
1138 ServerStats
.is_kill
++;
1140 target_p
->flags
|= FLAGS_KILLED
;
1141 (void) exit_client(client_p
, target_p
, &me
, "Nick collision");
1146 change_remote_nick(client_p
, source_p
, newts
, nick
, 1);
1152 register_client(struct Client
*client_p
, struct Client
*server
,
1153 const char *nick
, time_t newts
, int parc
, const char *parv
[])
1155 struct Client
*source_p
;
1157 struct nd_entry
*nd
;
1163 if((server
= find_server(NULL
, parv
[7])) == NULL
)
1165 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1166 "Ghost killed: %s on invalid server %s",
1168 sendto_one(client_p
, ":%s KILL %s :%s (Server doesn't exist)",
1169 get_id(&me
, client_p
), nick
, me
.name
);
1174 source_p
= make_client(client_p
);
1175 user
= make_user(source_p
);
1176 rb_dlinkAddTail(source_p
, &source_p
->node
, &global_client_list
);
1178 source_p
->hopcount
= atoi(parv
[2]);
1179 source_p
->tsinfo
= newts
;
1181 strcpy(source_p
->name
, nick
);
1182 rb_strlcpy(source_p
->username
, parv
[5], sizeof(source_p
->username
));
1183 rb_strlcpy(source_p
->host
, parv
[6], sizeof(source_p
->host
));
1184 rb_strlcpy(source_p
->orighost
, source_p
->host
, sizeof(source_p
->orighost
));
1188 rb_strlcpy(source_p
->info
, parv
[11], sizeof(source_p
->info
));
1189 rb_strlcpy(source_p
->sockhost
, parv
[7], sizeof(source_p
->sockhost
));
1190 rb_strlcpy(source_p
->id
, parv
[8], sizeof(source_p
->id
));
1191 add_to_id_hash(source_p
->id
, source_p
);
1192 if (strcmp(parv
[9], "*"))
1194 rb_strlcpy(source_p
->orighost
, parv
[9], sizeof(source_p
->orighost
));
1195 if (irccmp(source_p
->host
, source_p
->orighost
))
1196 SetDynSpoof(source_p
);
1198 if (strcmp(parv
[10], "*"))
1199 rb_strlcpy(source_p
->user
->suser
, parv
[10], sizeof(source_p
->user
->suser
));
1203 rb_strlcpy(source_p
->info
, parv
[9], sizeof(source_p
->info
));
1204 rb_strlcpy(source_p
->sockhost
, parv
[7], sizeof(source_p
->sockhost
));
1205 rb_strlcpy(source_p
->id
, parv
[8], sizeof(source_p
->id
));
1206 add_to_id_hash(source_p
->id
, source_p
);
1210 rb_strlcpy(source_p
->info
, parv
[8], sizeof(source_p
->info
));
1213 /* remove any nd entries for this nick */
1214 if((nd
= irc_dictionary_retrieve(nd_dict
, nick
)))
1217 add_to_client_hash(nick
, source_p
);
1218 add_to_hostname_hash(source_p
->orighost
, source_p
);
1219 monitor_signon(source_p
);
1224 flag
= user_modes
[(unsigned char) *m
];
1226 if(flag
& UMODE_SERVICE
)
1231 RB_DLINK_FOREACH(ptr
, service_list
.head
)
1233 if(!irccmp((const char *) ptr
->data
, server
->name
))
1247 /* increment +i count if theyre invis */
1248 if(!(source_p
->umodes
& UMODE_INVISIBLE
) && (flag
& UMODE_INVISIBLE
))
1251 /* increment opered count if theyre opered */
1252 if(!(source_p
->umodes
& UMODE_OPER
) && (flag
& UMODE_OPER
))
1255 source_p
->umodes
|= flag
;
1259 if(IsOper(source_p
) && !IsService(source_p
))
1260 rb_dlinkAddAlloc(source_p
, &oper_list
);
1262 SetRemoteClient(source_p
);
1264 if(++Count
.total
> Count
.max_tot
)
1265 Count
.max_tot
= Count
.total
;
1267 source_p
->servptr
= server
;
1269 rb_dlinkAdd(source_p
, &source_p
->lnode
, &source_p
->servptr
->serv
->users
);
1271 /* fake direction */
1272 if(source_p
->servptr
->from
!= source_p
->from
)
1274 struct Client
*target_p
= source_p
->servptr
->from
;
1276 sendto_realops_snomask(SNO_DEBUG
, L_ALL
,
1277 "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
1278 client_p
->name
, source_p
->name
,
1279 source_p
->username
, source_p
->host
,
1280 server
->name
, target_p
->name
, target_p
->from
->name
);
1281 kill_client(client_p
, source_p
,
1282 "%s (NICK from wrong direction (%s != %s))",
1283 me
.name
, server
->name
, target_p
->from
->name
);
1284 source_p
->flags
|= FLAGS_KILLED
;
1285 return exit_client(source_p
, source_p
, &me
, "USER server wrong direction");
1288 call_hook(h_new_remote_user
, source_p
);
1290 return (introduce_client(client_p
, source_p
, user
, nick
, parc
== 12));
1293 /* Check if we can do SAVE. target_p can be a client to save or a
1294 * server introducing a client -- jilles */
1296 can_save(struct Client
*target_p
)
1298 struct Client
*serv_p
;
1300 if (MyClient(target_p
))
1302 if (!has_id(target_p
))
1304 serv_p
= IsServer(target_p
) ? target_p
: target_p
->servptr
;
1305 while (serv_p
!= NULL
&& serv_p
!= &me
)
1307 if (!(serv_p
->serv
->caps
& CAP_SAVE
))
1309 serv_p
= serv_p
->servptr
;
1311 return serv_p
== &me
;
1315 save_user(struct Client
*client_p
, struct Client
*source_p
,
1316 struct Client
*target_p
)
1318 if (!MyConnect(target_p
) && (!has_id(target_p
) || !IsCapable(target_p
->from
, CAP_SAVE
)))
1320 /* This shouldn't happen */
1321 /* Note we only need SAVE support in this direction */
1322 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1323 "Killed %s!%s@%s for nick collision detected by %s (%s does not support SAVE)",
1324 target_p
->name
, target_p
->username
, target_p
->host
, source_p
->name
, target_p
->from
->name
);
1325 kill_client_serv_butone(NULL
, target_p
, "%s (Nick collision (no SAVE support))", me
.name
);
1326 ServerStats
.is_kill
++;
1328 target_p
->flags
|= FLAGS_KILLED
;
1329 (void) exit_client(NULL
, target_p
, &me
, "Nick collision (no SAVE support)");
1332 sendto_server(client_p
, NULL
, CAP_SAVE
|CAP_TS6
, NOCAPS
, ":%s SAVE %s %ld",
1333 source_p
->id
, target_p
->id
, (long)target_p
->tsinfo
);
1334 sendto_server(client_p
, NULL
, CAP_TS6
, CAP_SAVE
, ":%s NICK %s :%ld",
1335 target_p
->id
, target_p
->id
, (long)SAVE_NICKTS
);
1336 if (!IsMe(client_p
))
1337 sendto_realops_snomask(SNO_SKILL
, L_ALL
,
1338 "Received SAVE message for %s from %s",
1339 target_p
->name
, source_p
->name
);
1340 if (MyClient(target_p
))
1342 sendto_one_numeric(target_p
, RPL_SAVENICK
,
1343 form_str(RPL_SAVENICK
), target_p
->id
);
1344 change_local_nick(target_p
, target_p
, target_p
->id
, 0);
1345 target_p
->tsinfo
= SAVE_NICKTS
;
1348 change_remote_nick(target_p
, target_p
, SAVE_NICKTS
, target_p
->id
, 0);
1351 static void bad_nickname(struct Client
*client_p
, const char *nick
)
1353 char squitreason
[100];
1355 sendto_wallops_flags(UMODE_WALLOP
, &me
,
1356 "Squitting %s because of bad nickname %s (NICKLEN mismatch?)",
1357 client_p
->name
, nick
);
1358 sendto_server(NULL
, NULL
, CAP_TS6
, NOCAPS
,
1359 ":%s WALLOPS :Squitting %s because of bad nickname %s (NICKLEN mismatch?)",
1360 me
.id
, client_p
->name
, nick
);
1362 rb_snprintf(squitreason
, sizeof squitreason
,
1363 "Bad nickname introduced [%s]", nick
);
1364 exit_client(client_p
, client_p
, &me
, squitreason
);