2 * IRC - Internet Relay Chat, ircd/m_nick.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * See file AUTHORS in IRC package for additional names of
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 1, or (at your option)
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., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * m_functions execute protocol messages on this server:
29 * cptr is always NON-NULL, pointing to a *LOCAL* client
30 * structure (with an open socket connected!). This
31 * identifies the physical socket where the message
32 * originated (or which caused the m_function to be
33 * executed--some m_functions may call others...).
35 * sptr is the source of the message, defined by the
36 * prefix part of the message if present. If not
37 * or prefix not found, then sptr==cptr.
39 * (!IsServer(cptr)) => (cptr == sptr), because
40 * prefixes are taken *only* from servers...
43 * (sptr == cptr) => the message didn't
46 * (sptr != cptr && IsServer(sptr) means
47 * the prefix specified servername. (?)
49 * (sptr != cptr && !IsServer(sptr) means
50 * that message originated from a remote
55 * (!IsServer(sptr)) means that, sptr can safely
56 * taken as defining the target structure of the
57 * message in this server.
59 * *Always* true (if 'parse' and others are working correct):
61 * 1) sptr->from == cptr (note: cptr->from == cptr)
63 * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
64 * *cannot* be a local connection, unless it's
65 * actually cptr!). [MyConnect(x) should probably
66 * be defined as (x == x->from) --msa ]
68 * parc number of variable parameter strings (if zero,
69 * parv is allowed to be NULL)
71 * parv a NULL terminated list of parameter pointers,
73 * parv[0], sender (prefix string), if not present
74 * this points to an empty string.
75 * parv[1]...parv[parc-1]
76 * pointers to additional parameters
77 * parv[parc] == NULL, *always*
79 * note: it is guaranteed that parv[0]..parv[parc-1] are all
84 * No need to include handlers.h here the signatures must match
85 * and we don't need to force a rebuild of all the handlers everytime
86 * we add a new one to the list. --Bleep
94 #include "ircd_chattr.h"
95 #include "ircd_reply.h"
96 #include "ircd_string.h"
110 * m_nick - message handler for local clients
111 * parv[0] = sender prefix
114 int m_nick(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
116 struct Client* acptr;
117 char nick[NICKLEN + 2];
120 const char* client_name;
123 assert(cptr == sptr);
126 * parv[0] will be empty for clients connecting for the first time
128 client_name = (*sptr->name) ? sptr->name : "*";
131 send_reply(sptr, ERR_NONICKNAMEGIVEN);
135 * Don't let them send make us send back a really long string of
139 if (strlen(arg) > NICKLEN)
142 if ((s = strchr(arg, '~')))
148 * If do_nick_name() returns a null name OR if the server sent a nick
149 * name and do_nick_name() changed it in some way (due to rules of nick
150 * creation) then reject it. If from a server and we reject it,
151 * and KILL it. -avalon 4/4/92
153 if (0 == do_nick_name(nick)) {
154 send_reply(sptr, ERR_ERRONEUSNICKNAME, arg);
159 * Check if this is a LOCAL user trying to use a reserved (Juped)
160 * nick, if so tell him that it's a nick in use...
162 if (isNickJuped(nick)) {
163 send_reply(sptr, ERR_NICKNAMEINUSE, nick);
164 return 0; /* NICK message ignored */
167 if (!(acptr = FindClient(nick))) {
169 * No collisions, all clear...
171 return set_nick_name(cptr, sptr, nick, parc, parv);
173 if (IsServer(acptr)) {
174 send_reply(sptr, ERR_NICKNAMEINUSE, nick);
175 return 0; /* NICK message ignored */
178 * If acptr == sptr, then we have a client doing a nick
179 * change between *equivalent* nicknames as far as server
180 * is concerned (user is changing the case of his/her
181 * nickname or somesuch)
185 * If acptr == sptr, then we have a client doing a nick
186 * change between *equivalent* nicknames as far as server
187 * is concerned (user is changing the case of his/her
188 * nickname or somesuch)
190 if (0 != strcmp(acptr->name, nick)) {
192 * Allows change of case in his/her nick
194 return set_nick_name(cptr, sptr, nick, parc, parv);
197 * This is just ':old NICK old' type thing.
198 * Just forget the whole thing here. There is
199 * no point forwarding it to anywhere,
200 * especially since servers prior to this
201 * version would treat it as nick collision.
206 * Note: From this point forward it can be assumed that
207 * acptr != sptr (point to different client structures).
209 assert(acptr != sptr);
211 * If the older one is "non-person", the new entry is just
212 * allowed to overwrite it. Just silently drop non-person,
213 * and proceed with the nick. This should take care of the
214 * "dormant nick" way of generating collisions...
216 * XXX - hmmm can this happen after one is registered?
218 if (IsUnknown(acptr) && MyConnect(acptr)) {
219 ++ServerStats->is_ref;
220 exit_client(cptr, acptr, &me, "Overridden by other sign on");
221 return set_nick_name(cptr, sptr, nick, parc, parv);
224 * NICK is coming from local client connection. Just
225 * send error reply and ignore the command.
227 send_reply(sptr, ERR_NICKNAMEINUSE, nick);
228 return 0; /* NICK message ignored */
233 * ms_nick - server message handler for nicks
234 * parv[0] = sender prefix
237 * If from server, source is client:
238 * parv[2] = timestamp
242 * parv[3] = timestamp
245 * parv[6] = umode (optional)
246 * parv[parc-4] = %<lastmod>:<mask> <- Only if matching GLINE
247 * parv[parc-3] = IP# <- Only Protocol >= 10
248 * parv[parc-2] = YXX, numeric nick <- Only Protocol >= 10
249 * parv[parc-1] = info
252 int ms_nick(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
254 struct Client* acptr;
255 char nick[NICKLEN + 2];
261 assert(IsServer(cptr));
263 if ((IsServer(sptr) && parc < 8) || parc < 3) {
264 sendto_opmask_butone(0, SNO_OLDSNO, "bad NICK param count for %s from %C",
266 return need_more_params(sptr, "NICK");
269 ircd_strncpy(nick, parv[1], NICKLEN);
270 nick[NICKLEN] = '\0';
272 if (IsServer(sptr)) {
273 lastnick = atoi(parv[3]);
274 if (lastnick > OLDEST_TS && !IsBurstOrBurstAck(sptr))
275 sptr->serv->lag = TStime() - lastnick;
278 lastnick = atoi(parv[2]);
279 if (lastnick > OLDEST_TS && !IsBurstOrBurstAck(sptr))
280 sptr->user->server->serv->lag = TStime() - lastnick;
283 * If do_nick_name() returns a null name OR if the server sent a nick
284 * name and do_nick_name() changed it in some way (due to rules of nick
285 * creation) then reject it. If from a server and we reject it,
286 * and KILL it. -avalon 4/4/92
288 if (0 == do_nick_name(nick) || 0 != strcmp(nick, parv[1])) {
289 send_reply(sptr, ERR_ERRONEUSNICKNAME, parv[1]);
291 ++ServerStats->is_kill;
292 sendto_opmask_butone(0, SNO_OLDSNO, "Bad Nick: %s From: %s %C", parv[1],
294 sendcmdto_one(&me, CMD_KILL, cptr, "%s :%s (%s <- %s[%s])",
295 IsServer(sptr) ? parv[parc - 2] : parv[0], me.name, parv[1],
297 if (!IsServer(sptr)) {
301 sendcmdto_serv_butone(&me, CMD_KILL, 0, "%s :%s (%s <- %s!%s@%s)",
302 parv[0], me.name, cptr->name, parv[0],
303 sptr->user ? sptr->username : "",
304 sptr->user ? sptr->user->server->name :
310 * Check against nick name collisions.
312 * Put this 'if' here so that the nesting goes nicely on the screen :)
313 * We check against server name list before determining if the nickname
314 * is present in the nicklist (due to the way the below for loop is
315 * constructed). -avalon
318 acptr = FindClient(nick);
321 * No collisions, all clear...
323 return set_nick_name(cptr, sptr, nick, parc, parv);
327 if (IsServer(acptr)) {
329 * We have a nickname trying to use the same name as
330 * a server. Send out a nick collision KILL to remove
331 * the nickname. As long as only a KILL is sent out,
332 * there is no danger of the server being disconnected.
333 * Ultimate way to jupiter a nick ? >;-). -avalon
335 sendto_opmask_butone(0, SNO_OLDSNO, "Nick collision on %C(%C <- %C)", sptr,
337 ++ServerStats->is_kill;
339 sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s <- %s)", sptr, me.name,
340 acptr->from->name, cptr->name);
342 sptr->flags |= FLAGS_KILLED;
344 * if sptr is a server it is exited here, nothing else to do
346 return exit_client(cptr, sptr, &me, "Nick/Server collision");
350 * If acptr == sptr, then we have a client doing a nick
351 * change between *equivalent* nicknames as far as server
352 * is concerned (user is changing the case of his/her
353 * nickname or somesuch)
356 if (strcmp(acptr->name, nick) != 0)
358 * Allows change of case in his/her nick
360 return set_nick_name(cptr, sptr, nick, parc, parv);
363 * This is just ':old NICK old' type thing.
364 * Just forget the whole thing here. There is
365 * no point forwarding it to anywhere,
366 * especially since servers prior to this
367 * version would treat it as nick collision.
369 return 0; /* NICK Message ignored */
373 * Note: From this point forward it can be assumed that
374 * acptr != sptr (point to different client structures).
376 assert(acptr != sptr);
378 * If the older one is "non-person", the new entry is just
379 * allowed to overwrite it. Just silently drop non-person,
380 * and proceed with the nick. This should take care of the
381 * "dormant nick" way of generating collisions...
383 if (IsUnknown(acptr) && MyConnect(acptr)) {
384 ++ServerStats->is_ref;
385 exit_client(cptr, acptr, &me, "Overridden by other sign on");
386 return set_nick_name(cptr, sptr, nick, parc, parv);
389 * Decide, we really have a nick collision and deal with it
392 * NICK was coming from a server connection.
393 * This means we have a race condition (two users signing on
394 * at the same time), or two net fragments reconnecting with the same nick.
395 * The latter can happen because two different users connected
396 * or because one and the same user switched server during a net break.
397 * If the TimeStamps are equal, we kill both (or only 'new'
398 * if it was a ":server NICK new ...").
399 * Otherwise we kill the youngest when user@host differ,
400 * or the oldest when they are the same.
401 * We treat user and ~user as different, because if it wasn't
402 * a faked ~user the AUTH wouldn't have added the '~'.
406 if (IsServer(sptr)) {
408 * A new NICK being introduced by a neighbouring
409 * server (e.g. message type ":server NICK new ..." received)
411 * compare IP address and username
413 differ = (acptr->ip.s_addr != htonl(base64toint(parv[parc - 3]))) ||
414 (0 != ircd_strcmp(acptr->user->username, parv[4]));
415 sendto_opmask_butone(0, SNO_OLDSNO, "Nick collision on %C (%C %Tu <- "
416 "%C %Tu (%s user@host))", acptr, acptr->from,
417 acptr->lastnick, cptr, lastnick,
418 differ ? "Different" : "Same");
422 * A NICK change has collided (e.g. message type ":old NICK new").
424 * compare IP address and username
426 differ = (acptr->ip.s_addr != sptr->ip.s_addr) ||
427 (0 != ircd_strcmp(acptr->user->username, sptr->user->username));
428 sendto_opmask_butone(0, SNO_OLDSNO, "Nick change collision from %C to "
429 "%C (%C %Tu <- %C %Tu)", sptr, acptr, acptr->from,
430 acptr->lastnick, cptr, lastnick);
433 * Now remove (kill) the nick on our side if it is the youngest.
434 * If no timestamp was received, we ignore the incoming nick
435 * (and expect a KILL for our legit nick soon ):
436 * When the timestamps are equal we kill both nicks. --Run
437 * acptr->from != cptr should *always* be true (?).
439 * This exits the client sending the NICK message
441 if (acptr->from != cptr) {
442 if ((differ && lastnick >= acptr->lastnick) || (!differ && lastnick <= acptr->lastnick)) {
443 if (!IsServer(sptr)) {
444 ++ServerStats->is_kill;
445 sendcmdto_serv_butone(&me, CMD_KILL, sptr, "%C :%s (%s <- %s (Nick "
446 "collision))", sptr, me.name, acptr->from->name,
448 assert(!MyConnect(sptr));
454 sendto_one(cptr, "%s " TOK_KILL " %s%s :%s (Ghost 2)", /* XXX DEAD */
455 NumServ(&me), NumNick(sptr), me.name);
457 sptr->flags |= FLAGS_KILLED;
458 exit_client(cptr, sptr, &me, "Nick collision (you're a ghost)");
460 * we have killed sptr off, zero out it's pointer so if it's used
461 * again we'll know about it --Bleep
465 if (lastnick != acptr->lastnick)
466 return 0; /* Ignore the NICK */
468 send_reply(acptr, ERR_NICKCOLLISION, nick);
471 ++ServerStats->is_kill;
472 acptr->flags |= FLAGS_KILLED;
474 * This exits the client we had before getting the NICK message
477 sendcmdto_serv_butone(&me, CMD_KILL, acptr, "%C :%s (%s <- %s (older "
478 "nick overruled))", acptr, me.name,
479 acptr->from->name, cptr->name);
480 if (MyConnect(acptr))
481 sendcmdto_one(acptr, CMD_QUIT, cptr, ":Local kill by %s (Ghost)",
483 exit_client(cptr, acptr, &me, "Nick collision (older nick overruled)");
486 sendcmdto_serv_butone(&me, CMD_KILL, acptr, "%C :%s (%s <- %s (nick "
487 "collision from same user@host))", acptr, me.name,
488 acptr->from->name, cptr->name);
489 if (MyConnect(acptr))
490 sendcmdto_one(acptr, CMD_QUIT, cptr, ":Local kill by %s (Ghost: ",
491 "switched servers too fast)", me.name);
492 exit_client(cptr, acptr, &me, "Nick collision (You collided yourself)");
494 if (lastnick == acptr->lastnick)
498 return set_nick_name(cptr, sptr, nick, parc, parv);
505 * parv[0] = sender prefix
508 * If from server, source is client:
509 * parv[2] = timestamp
513 * parv[3] = timestamp
516 * parv[6] = umode (optional)
517 * parv[parc-3] = IP# <- Only Protocol >= 10
518 * parv[parc-2] = YXX, numeric nick <- Only Protocol >= 10
519 * parv[parc-1] = info
522 int m_nick(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
524 struct Client* acptr;
525 char nick[NICKLEN + 2];
531 sendto_one(sptr, err_str(ERR_NONICKNAMEGIVEN), me.name, parv[0]); /* XXX DEAD */
534 else if ((IsServer(sptr) && parc < 8) || (IsServer(cptr) && parc < 3))
536 need_more_params(sptr, "NICK");
537 sendto_ops("bad NICK param count for %s from %s", parv[1], cptr->name); /* XXX DEAD */
540 if (MyConnect(sptr) && (s = strchr(parv[1], '~')))
542 ircd_strncpy(nick, parv[1], NICKLEN);
543 nick[NICKLEN] = '\0';
544 if (IsServer(cptr)) {
545 if (IsServer(sptr)) {
546 lastnick = atoi(parv[3]);
547 if (lastnick > OLDEST_TS)
548 sptr->serv->lag = TStime() - lastnick;
550 lastnick = atoi(parv[2]);
551 if (lastnick > OLDEST_TS)
552 sptr->user->server->serv->lag = TStime() - lastnick;
556 * If do_nick_name() returns a null name OR if the server sent a nick
557 * name and do_nick_name() changed it in some way (due to rules of nick
558 * creation) then reject it. If from a server and we reject it,
559 * and KILL it. -avalon 4/4/92
561 if (do_nick_name(nick) == 0 || (IsServer(cptr) && strcmp(nick, parv[1])))
563 sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME), me.name, parv[0], parv[1]); /* XXX DEAD */
567 ServerStats->is_kill++;
568 sendto_ops("Bad Nick: %s From: %s %s", /* XXX DEAD */
569 parv[1], parv[0], cptr->name);
570 sendto_one(cptr, "%s " TOK_KILL " %s :%s (%s <- %s[%s])", /* XXX DEAD */
571 NumServ(&me), IsServer(sptr) ? parv[parc - 2] : parv[0], me.name,
572 parv[1], nick, cptr->name);
573 if (!IsServer(sptr)) /* bad nick _change_ */
575 sendto_highprot_butone(&me, 10, "%s " TOK_KILL " %s :%s (%s <- %s!%s@%s)", /* XXX DEAD */
576 NumServ(&me), parv[0], me.name, cptr->name,
577 parv[0], sptr->user ? sptr->username : "",
578 sptr->user ? sptr->user->server->name : cptr->name);
585 * Check if this is a LOCAL user trying to use a reserved (Juped)
586 * nick, if so tell him that it's a nick in use...
588 if ((!IsServer(cptr)) && isNickJuped(nick))
590 sendto_one(sptr, err_str(ERR_NICKNAMEINUSE), me.name, /* XXX DEAD */
591 /* parv[0] is empty when connecting */
592 EmptyString(parv[0]) ? "*" : parv[0], nick);
593 return 0; /* NICK message ignored */
597 * Check against nick name collisions.
599 * Put this 'if' here so that the nesting goes nicely on the screen :)
600 * We check against server name list before determining if the nickname
601 * is present in the nicklist (due to the way the below for loop is
602 * constructed). -avalon
605 acptr = FindServer(nick);
607 if (acptr) { /* There is a nick collision with a server */
610 /* Local user trying to use a nick thats a server
611 * Return an error message and ignore the command
613 sendto_one(sptr, err_str(ERR_NICKNAMEINUSE), me.name, /* XXX DEAD */
614 EmptyString(parv[0]) ? "*" : parv[0], nick);
615 return 0; /* NICK message ignored */
619 * We have a nickname trying to use the same name as
620 * a server. Send out a nick collision KILL to remove
621 * the nickname. As long as only a KILL is sent out,
622 * there is no danger of the server being disconnected.
623 * Ultimate way to jupiter a nick ? >;-). -avalon
625 sendto_ops("Nick collision on %s(%s <- %s)", /* XXX DEAD */
626 sptr->name, acptr->from->name, cptr->name);
627 ServerStats->is_kill++;
628 sendto_one(cptr, "%s " TOK_KILL " %s%s :%s (%s <- %s)", /* XXX DEAD */
629 NumServ(&me), NumNick(sptr), me.name, acptr->from->name,
631 sptr->flags |= FLAGS_KILLED;
632 return exit_client(cptr, sptr, &me, "Nick/Server collision");
635 acptr = FindClient(nick);
637 /* No collisions? Set the nick name and we're done */
639 return set_nick_name(cptr, sptr, nick, parc, parv);
641 * If acptr == sptr, then we have a client doing a nick
642 * change between *equivalent* nicknames as far as server
643 * is concerned (user is changing the case of his/her
644 * nickname or somesuch)
648 if (strcmp(acptr->name, nick) != 0)
650 * Allows change of case in his/her nick
652 return set_nick_name(cptr, sptr, nick, parc, parv);
655 * This is just ':old NICK old' type thing.
656 * Just forget the whole thing here. There is
657 * no point forwarding it to anywhere,
658 * especially since servers prior to this
659 * version would treat it as nick collision.
661 return 0; /* NICK Message ignored */
665 * Note: From this point forward it can be assumed that
666 * acptr != sptr (point to different client structures).
669 * If the older one is "non-person", the new entry is just
670 * allowed to overwrite it. Just silently drop non-person,
671 * and proceed with the nick. This should take care of the
672 * "dormant nick" way of generating collisions...
674 if (IsUnknown(acptr) && MyConnect(acptr))
676 ++ServerStats->is_ref;
677 exit_client(cptr, acptr, &me, "Overridden by other sign on");
678 return set_nick_name(cptr, sptr, nick, parc, parv);
681 * Decide, we really have a nick collision and deal with it
686 * NICK is coming from local client connection. Just
687 * send error reply and ignore the command.
689 sendto_one(sptr, err_str(ERR_NICKNAMEINUSE), me.name, /* XXX DEAD */
690 /* parv[0] is empty when connecting */
691 EmptyString(parv[0]) ? "*" : parv[0], nick);
692 return 0; /* NICK message ignored */
695 * NICK was coming from a server connection.
696 * This means we have a race condition (two users signing on
697 * at the same time), or two net fragments reconnecting with the same nick.
698 * The latter can happen because two different users connected
699 * or because one and the same user switched server during a net break.
700 * If the TimeStamps are equal, we kill both (or only 'new'
701 * if it was a ":server NICK new ...").
702 * Otherwise we kill the youngest when user@host differ,
703 * or the oldest when they are the same.
704 * We treat user and ~user as different, because if it wasn't
705 * a faked ~user the AUTH wouldn't have added the '~'.
712 * A new NICK being introduced by a neighbouring
713 * server (e.g. message type ":server NICK new ..." received)
715 differ = (acptr->ip.s_addr != htonl(base64toint(parv[parc - 3]))) ||
716 (0 != ircd_strcmp(acptr->user->username, parv[4]));
717 sendto_ops("Nick collision on %s (%s " TIME_T_FMT " <- %s " TIME_T_FMT /* XXX DEAD */
718 " (%s user@host))", acptr->name, acptr->from->name, acptr->lastnick,
719 cptr->name, lastnick, differ ? "Different" : "Same");
724 * A NICK change has collided (e.g. message type ":old NICK new").
726 lastnick = atoi(parv[2]);
727 differ = (acptr->ip.s_addr != sptr->ip.s_addr) ||
728 (0 != ircd_strcmp(acptr->user->username, sptr->user->username));
729 sendto_ops("Nick change collision from %s to %s (%s " TIME_T_FMT " <- %s " /* XXX DEAD */
730 TIME_T_FMT ")", sptr->name, acptr->name, acptr->from->name,
731 acptr->lastnick, cptr->name, lastnick);
734 * Now remove (kill) the nick on our side if it is the youngest.
735 * If no timestamp was received, we ignore the incoming nick
736 * (and expect a KILL for our legit nick soon ):
737 * When the timestamps are equal we kill both nicks. --Run
738 * acptr->from != cptr should *always* be true (?).
740 if (acptr->from != cptr)
742 if ((differ && lastnick >= acptr->lastnick) ||
743 (!differ && lastnick <= acptr->lastnick))
747 ServerStats->is_kill++;
748 sendto_highprot_butone(cptr, 10, /* Kill old from outgoing servers */ /* XXX DEAD */
749 "%s " TOK_KILL " %s%s :%s (%s <- %s (Nick collision))",
750 NumServ(&me), NumNick(sptr), me.name, acptr->from->name,
752 if (MyConnect(sptr) && IsServer(cptr) && Protocol(cptr) > 9)
753 sendto_one(cptr, "%s " TOK_KILL " %s%s :%s (Ghost2)", /* XXX DEAD */
754 NumServ(&me), NumNick(sptr), me.name);
755 sptr->flags |= FLAGS_KILLED;
756 exit_client(cptr, sptr, &me, "Nick collision (you're a ghost)");
758 if (lastnick != acptr->lastnick)
759 return 0; /* Ignore the NICK */
761 sendto_one(acptr, err_str(ERR_NICKCOLLISION), me.name, acptr->name, nick); /* XXX DEAD */
763 ServerStats->is_kill++;
764 acptr->flags |= FLAGS_KILLED;
767 sendto_highprot_butone(cptr, 10, /* Kill our old from outgoing servers */ /* XXX DEAD */
768 "%s " TOK_KILL " %s%s :%s (%s <- %s (older nick overruled))",
769 NumServ(&me), NumNick(acptr), me.name, acptr->from->name,
771 if (MyConnect(acptr) && IsServer(cptr) && Protocol(cptr) > 9)
772 sendto_one(cptr, "%s%s " TOK_QUIT " :Local kill by %s (Ghost)", /* XXX DEAD */
773 NumNick(acptr), me.name);
774 exit_client(cptr, acptr, &me, "Nick collision (older nick overruled)");
778 sendto_highprot_butone(cptr, 10, /* Kill our old from outgoing servers */ /* XXX DEAD */
779 "%s " TOK_KILL " %s%s :%s (%s <- %s (nick collision from same user@host))",
780 NumServ(&me), NumNick(acptr), me.name, acptr->from->name,
782 if (MyConnect(acptr) && IsServer(cptr) && Protocol(cptr) > 9)
783 sendto_one(cptr, /* XXX DEAD */
784 "%s%s " TOK_QUIT " :Local kill by %s (Ghost: switched servers too fast)",
785 NumNick(acptr), me.name);
786 exit_client(cptr, acptr, &me, "Nick collision (You collided yourself)");
788 if (lastnick == acptr->lastnick)
791 return set_nick_name(cptr, sptr, nick, parc, parv);