2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2012 Alexander Barton (alex@barton.de) and Contributors.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 * Please read the file COPYING, README and AUTHORS for more information.
26 #include "conn-func.h"
36 #include "irc-macros.h"
37 #include "irc-write.h"
40 #include "irc-login.h"
42 static void Kill_Nick PARAMS((char *Nick, char *Reason));
43 static void Change_Nick PARAMS((CLIENT * Origin, CLIENT * Target, char *NewNick,
47 * Handler for the IRC "PASS" command.
49 * @param Client The client from which this command has been received.
50 * @param Req Request structure with prefix and all parameters.
51 * @return CONNECTED or DISCONNECTED.
54 IRC_PASS( CLIENT *Client, REQUEST *Req )
56 char *type, *orig_flags;
57 int protohigh, protolow;
59 assert( Client != NULL );
60 assert( Req != NULL );
62 /* Return an error if this is not a local client */
63 if (Client_Conn(Client) <= NONE)
64 return IRC_WriteErrClient(Client, ERR_UNKNOWNCOMMAND_MSG,
65 Client_ID(Client), Req->command);
67 if (Client_Type(Client) == CLIENT_UNKNOWN && Req->argc == 1) {
68 /* Not yet registered "unknown" connection, PASS with one
69 * argument: either a regular client, service, or server
70 * using the old RFC 1459 section 4.1.1 syntax. */
71 LogDebug("Connection %d: got PASS command (RFC 1459) ...",
73 } else if ((Client_Type(Client) == CLIENT_UNKNOWN ||
74 Client_Type(Client) == CLIENT_UNKNOWNSERVER) &&
75 (Req->argc == 3 || Req->argc == 4)) {
76 /* Not yet registered "unknown" connection or outgoing server
77 * link, PASS with three or four argument: server using the
78 * RFC 2813 section 4.1.1 syntax. */
79 LogDebug("Connection %d: got PASS command (RFC 2813, new server link) ...",
81 } else if (Client_Type(Client) == CLIENT_UNKNOWN ||
82 Client_Type(Client) == CLIENT_UNKNOWNSERVER) {
83 /* Unregistered connection, but wrong number of arguments: */
84 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
85 Client_ID(Client), Req->command);
87 /* Registered connection, PASS command is not allowed! */
88 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
92 Conn_SetPassword(Client_Conn(Client), Req->argv[0]);
94 /* Protocol version */
95 if (Req->argc >= 2 && strlen(Req->argv[1]) >= 4) {
101 Req->argv[1][4] = '\0';
102 protolow = atoi(&Req->argv[1][2]);
103 Req->argv[1][2] = '\0';
104 protohigh = atoi(Req->argv[1]);
106 Req->argv[1][2] = c2;
107 Req->argv[1][4] = c4;
109 Client_SetType(Client, CLIENT_GOTPASS_2813);
111 protohigh = protolow = 0;
112 Client_SetType(Client, CLIENT_GOTPASS);
115 /* Protocol type, see doc/Protocol.txt */
116 if (Req->argc >= 2 && strlen(Req->argv[1]) > 4)
117 type = &Req->argv[1][4];
121 /* Protocol flags/options */
123 orig_flags = Req->argv[3];
127 /* Implementation, version and IRC+ flags */
128 if (Req->argc >= 3) {
129 char *impl, *ptr, *serverver, *flags;
132 ptr = strchr(impl, '|');
136 if (type && strcmp(type, PROTOIRCPLUS) == 0) {
137 /* The peer seems to be a server which supports the
138 * IRC+ protocol (see doc/Protocol.txt). */
139 serverver = ptr ? ptr + 1 : "?";
140 flags = strchr(ptr ? serverver : impl, ':');
147 "Peer on connection %d announces itself as %s-%s using protocol %d.%d/IRC+ (flags: \"%s\").",
148 Client_Conn(Client), impl, serverver,
149 protohigh, protolow, flags);
151 /* The peer seems to be a server supporting the
152 * "original" IRC protocol (RFC 2813). */
153 if (strchr(orig_flags, 'Z'))
158 "Peer on connection %d announces itself as \"%s\" using protocol %d.%d (flags: \"%s\").",
159 Client_Conn(Client), impl,
160 protohigh, protolow, flags);
162 Client_SetFlags(Client, flags);
169 * Handler for the IRC "NICK" command.
171 * @param Client The client from which this command has been received.
172 * @param Req Request structure with prefix and all parameters.
173 * @return CONNECTED or DISCONNECTED.
176 IRC_NICK( CLIENT *Client, REQUEST *Req )
178 CLIENT *intr_c, *target, *c;
179 char *nick, *user, *hostname, *modes, *info;
182 assert( Client != NULL );
183 assert( Req != NULL );
185 /* Some IRC clients, for example BitchX, send the NICK and USER
186 * commands in the wrong order ... */
187 if(Client_Type(Client) == CLIENT_UNKNOWN
188 || Client_Type(Client) == CLIENT_GOTPASS
189 || Client_Type(Client) == CLIENT_GOTNICK
191 || Client_Type(Client) == CLIENT_GOTUSER
193 || Client_Type(Client) == CLIENT_USER
194 || Client_Type(Client) == CLIENT_SERVICE
195 || (Client_Type(Client) == CLIENT_SERVER && Req->argc == 1))
197 /* User registration or change of nickname */
198 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 1)
200 /* Search "target" client */
201 if (Client_Type(Client) == CLIENT_SERVER) {
202 target = Client_Search(Req->prefix);
204 return IRC_WriteErrClient(Client,
209 /* Is this a restricted client? */
210 if (Client_HasMode(Client, 'r'))
211 return IRC_WriteErrClient(Client,
218 /* If the clients tries to change to its own nickname we won't
219 * do anything. This is how the original ircd behaves and some
220 * clients (for example Snak) expect it to be like this.
221 * But I doubt that this is "really the right thing" ... */
222 if (strcmp(Client_ID(target), Req->argv[0]) == 0)
226 /* Check that the new nickname is available. Special case:
227 * the client only changes from/to upper to lower case. */
228 if (strcasecmp(Client_ID(target), Req->argv[0]) != 0) {
229 if (!Client_CheckNick(target, Req->argv[0]))
233 if (Client_Type(target) != CLIENT_USER &&
234 Client_Type(target) != CLIENT_SERVICE &&
235 Client_Type(target) != CLIENT_SERVER) {
237 LogDebug("Connection %d: got valid NICK command ...",
238 Client_Conn( Client ));
240 /* Register new nickname of this client */
241 Client_SetID( target, Req->argv[0] );
245 Conn_SetAuthPing(Client_Conn(Client), rand());
246 IRC_WriteStrClient(Client, "PING :%ld",
247 Conn_GetAuthPing(Client_Conn(Client)));
248 LogDebug("Connection %d: sent AUTH PING %ld ...",
250 Conn_GetAuthPing(Client_Conn(Client)));
254 /* If we received a valid USER command already then
255 * register the new client! */
256 if( Client_Type( Client ) == CLIENT_GOTUSER )
257 return Login_User( Client );
259 Client_SetType( Client, CLIENT_GOTNICK );
261 /* Nickname change */
262 Change_Nick(Client, target, Req->argv[0],
263 Client_Type(Client) == CLIENT_USER ? true : false);
264 IRC_SetPenalty(target, 2);
268 } else if(Client_Type(Client) == CLIENT_SERVER ||
269 Client_Type(Client) == CLIENT_SERVICE) {
270 /* Server or service introduces new client */
272 /* Bad number of parameters? */
273 if (Req->argc != 2 && Req->argc != 7)
274 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
275 Client_ID(Client), Req->command);
277 if (Req->argc >= 7) {
278 /* RFC 2813 compatible syntax */
280 hops = atoi(Req->argv[1]);
282 hostname = Req->argv[3];
283 token = atoi(Req->argv[4]);
284 modes = Req->argv[5] + 1;
287 /* RFC 1459 compatible syntax */
291 hostname = Client_ID(Client);
292 token = atoi(Req->argv[1]);
297 c = Client_Search(nick);
300 * the new nick is already present on this server:
301 * the new and the old one have to be disconnected now.
303 Log( LOG_ERR, "Server %s introduces already registered nick \"%s\"!", Client_ID( Client ), Req->argv[0] );
304 Kill_Nick( Req->argv[0], "Nick collision" );
308 /* Find the Server this client is connected to */
309 intr_c = Client_GetFromToken(Client, token);
311 Log( LOG_ERR, "Server %s introduces nick \"%s\" on unknown server!?", Client_ID( Client ), Req->argv[0] );
312 Kill_Nick( Req->argv[0], "Unknown server" );
316 c = Client_NewRemoteUser(intr_c, nick, hops, user, hostname,
317 token, modes, info, true);
319 /* Out of memory, we need to disconnect client to keep
320 * network state consistent! */
322 "Can't create client structure! (on connection %d)",
323 Client_Conn(Client));
324 Kill_Nick(Req->argv[0], "Server error");
328 /* RFC 2813: client is now fully registered, inform all the
329 * other servers about the new user.
330 * RFC 1459: announce the new client only after receiving the
331 * USER command, first we need more information! */
333 LogDebug("Client \"%s\" is being registered (RFC 1459) ...",
335 Client_SetType(c, CLIENT_GOTNICK);
337 Client_Introduce(Client, c, CLIENT_USER);
342 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
347 * Handler for the IRC "SVSNICK" command.
349 * @param Client The client from which this command has been received.
350 * @param Req Request structure with prefix and all parameters.
351 * @return CONNECTED or DISCONNECTED.
354 IRC_SVSNICK(CLIENT *Client, REQUEST *Req)
356 CLIENT *from, *target;
358 assert(Client != NULL);
361 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 2)
363 /* Search the originator */
364 from = Client_Search(Req->prefix);
368 /* Search the target */
369 target = Client_Search(Req->argv[0]);
370 if (!target || Client_Type(target) != CLIENT_USER) {
371 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
372 Client_ID(Client), Req->argv[0]);
375 if (Client_Conn(target) <= NONE) {
376 /* We have to forward the message to the server handling
377 * this user; this is required to make sure all servers
378 * in the network do follow the nick name change! */
379 return IRC_WriteStrClientPrefix(Client_NextHop(target), from,
381 Req->argv[0], Req->argv[1]);
384 /* Make sure that the new nickname is valid */
385 if (!Client_CheckNick(from, Req->argv[1]))
388 Change_Nick(from, target, Req->argv[1], true);
393 * Handler for the IRC "USER" command.
395 * @param Client The client from which this command has been received.
396 * @param Req Request structure with prefix and all parameters.
397 * @return CONNECTED or DISCONNECTED.
400 IRC_USER(CLIENT * Client, REQUEST * Req)
405 assert(Client != NULL);
408 if (Client_Type(Client) == CLIENT_GOTNICK ||
410 Client_Type(Client) == CLIENT_UNKNOWN ||
412 Client_Type(Client) == CLIENT_GOTPASS)
415 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 4)
417 /* User name: only alphanumeric characters and limited
418 punctuation is allowed.*/
421 if (!isalnum((int)*ptr) &&
422 *ptr != '+' && *ptr != '-' && *ptr != '@' &&
423 *ptr != '.' && *ptr != '_') {
424 Conn_Close(Client_Conn(Client), NULL,
425 "Invalid user name", true);
431 /* Save the received username for authentication, and use
432 * it up to the first '@' as default user name (like ircd2.11,
433 * bahamut, ircd-seven, ...), prefixed with '~', if needed: */
434 Client_SetOrigUser(Client, Req->argv[0]);
435 ptr = strchr(Req->argv[0], '@');
439 ptr = Client_User(Client);
440 if (!ptr || !*ptr || *ptr == '~')
441 Client_SetUser(Client, Req->argv[0], false);
443 Client_SetUser(Client, Req->argv[0], false);
446 /* "Real name" or user info text: Don't set it to the empty
447 * string, the original ircd can't deal with such "real names"
448 * (e. g. "USER user * * :") ... */
450 Client_SetInfo(Client, Req->argv[3]);
452 Client_SetInfo(Client, "-");
454 LogDebug("Connection %d: got valid USER command ...",
455 Client_Conn(Client));
456 if (Client_Type(Client) == CLIENT_GOTNICK)
457 return Login_User(Client);
459 Client_SetType(Client, CLIENT_GOTUSER);
462 } else if (Client_Type(Client) == CLIENT_SERVER ||
463 Client_Type(Client) == CLIENT_SERVICE) {
464 /* Server/service updating an user */
465 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 4)
467 c = Client_Search(Req->prefix);
469 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
473 Client_SetUser(c, Req->argv[0], true);
474 Client_SetOrigUser(c, Req->argv[0]);
475 Client_SetHostname(c, Req->argv[1]);
476 Client_SetInfo(c, Req->argv[3]);
478 LogDebug("Connection %d: got valid USER command for \"%s\".",
479 Client_Conn(Client), Client_Mask(c));
481 /* RFC 1459 style user registration?
482 * Introduce client to network: */
483 if (Client_Type(c) == CLIENT_GOTNICK)
484 Client_Introduce(Client, c, CLIENT_USER);
487 } else if (Client_Type(Client) == CLIENT_USER) {
488 /* Already registered connection */
489 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
492 /* Unexpected/invalid connection state? */
493 return IRC_WriteErrClient(Client, ERR_NOTREGISTERED_MSG,
499 * Handler for the IRC "SERVICE" command.
501 * At the moment ngIRCd doesn't support directly linked services, so this
502 * function returns ERR_ERRONEUSNICKNAME when the SERVICE command has not been
503 * received from a peer server.
505 * @param Client The client from which this command has been received.
506 * @param Req Request structure with prefix and all parameters.
507 * @return CONNECTED or DISCONNECTED.
510 IRC_SERVICE(CLIENT *Client, REQUEST *Req)
513 char *nick, *user, *host, *info, *modes, *ptr;
516 assert(Client != NULL);
519 if (Client_Type(Client) != CLIENT_GOTPASS &&
520 Client_Type(Client) != CLIENT_SERVER)
521 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
524 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 6)
526 if (Client_Type(Client) != CLIENT_SERVER)
527 return IRC_WriteErrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
528 Client_ID(Client), Req->argv[0]);
531 user = NULL; host = NULL;
532 token = atoi(Req->argv[1]);
533 hops = atoi(Req->argv[4]);
536 /* Validate service name ("nickname") */
537 c = Client_Search(nick);
539 /* Nickname collision: disconnect (KILL) both clients! */
540 Log(LOG_ERR, "Server %s introduces already registered service \"%s\"!",
541 Client_ID(Client), nick);
542 Kill_Nick(nick, "Nick collision");
546 /* Get the server to which the service is connected */
547 intr_c = Client_GetFromToken(Client, token);
549 Log(LOG_ERR, "Server %s introduces service \"%s\" on unknown server!?",
550 Client_ID(Client), nick);
551 Kill_Nick(nick, "Unknown server");
555 /* Get user and host name */
556 ptr = strchr(nick, '@');
562 host = Client_Hostname(intr_c);
563 ptr = strchr(nick, '!');
571 /* According to RFC 2812/2813 parameter 4 <type> "is currently reserved
572 * for future usage"; but we use it to transfer the modes and check
573 * that the first character is a '+' sign and ignore it otherwise. */
574 modes = (Req->argv[3][0] == '+') ? ++Req->argv[3] : "";
576 c = Client_NewRemoteUser(intr_c, nick, hops, user, host,
577 token, modes, info, true);
579 /* Couldn't create client structure, so KILL the service to
580 * keep network status consistent ... */
581 Log(LOG_ALERT, "Can't create client structure! (on connection %d)",
582 Client_Conn(Client));
583 Kill_Nick(nick, "Server error");
587 Client_Introduce(Client, c, CLIENT_SERVICE);
592 * Handler for the IRC "WEBIRC" command.
594 * @param Client The client from which this command has been received.
595 * @param Req Request structure with prefix and all parameters.
596 * @return CONNECTED or DISCONNECTED.
599 IRC_WEBIRC(CLIENT *Client, REQUEST *Req)
601 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 4)
603 if (!Conf_WebircPwd[0] || strcmp(Req->argv[0], Conf_WebircPwd) != 0)
604 return IRC_WriteErrClient(Client, ERR_PASSWDMISMATCH_MSG,
607 LogDebug("Connection %d: got valid WEBIRC command: user=%s, host=%s, ip=%s",
608 Client_Conn(Client), Req->argv[1], Req->argv[2], Req->argv[3]);
610 Client_SetUser(Client, Req->argv[1], true);
611 Client_SetOrigUser(Client, Req->argv[1]);
612 Client_SetHostname(Client, Req->argv[2]);
617 * Handler for the IRC "QUIT" command.
619 * @param Client The client from which this command has been received.
620 * @param Req Request structure with prefix and all parameters.
621 * @return CONNECTED or DISCONNECTED.
624 IRC_QUIT( CLIENT *Client, REQUEST *Req )
627 char quitmsg[LINE_LEN];
629 assert(Client != NULL);
632 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 1)
635 strlcpy(quitmsg, Req->argv[0], sizeof quitmsg);
637 if (Client_Type(Client) == CLIENT_SERVER) {
639 target = Client_Search(Req->prefix);
642 "Got QUIT from %s for unknown client!?",
647 if (target != Client) {
648 Client_Destroy(target, "Got QUIT command",
649 Req->argc == 1 ? quitmsg : NULL, true);
652 Conn_Close(Client_Conn(Client), "Got QUIT command",
653 Req->argc == 1 ? quitmsg : NULL, true);
657 if (Req->argc == 1 && quitmsg[0] != '\"') {
658 /* " " to avoid confusion */
659 strlcpy(quitmsg, "\"", sizeof quitmsg);
660 strlcat(quitmsg, Req->argv[0], sizeof quitmsg-1);
661 strlcat(quitmsg, "\"", sizeof quitmsg );
664 /* User, Service, or not yet registered */
665 Conn_Close(Client_Conn(Client), "Got QUIT command",
666 Req->argc == 1 ? quitmsg : NULL, true);
675 * Handler for HTTP command, e.g. GET and POST
677 * We handle these commands here to avoid the quite long timeout when
678 * some user tries to access this IRC daemon using an web browser ...
680 * @param Client The client from which this command has been received.
681 * @param Req Request structure with prefix and all parameters.
682 * @return CONNECTED or DISCONNECTED.
685 IRC_QUIT_HTTP( CLIENT *Client, REQUEST *Req )
688 Req->argv[0] = "Oops, HTTP request received? This is IRC!";
689 return IRC_QUIT(Client, Req);
690 } /* IRC_QUIT_HTTP */
695 * Handler for the IRC "PING" command.
697 * @param Client The client from which this command has been received.
698 * @param Req Request structure with prefix and all parameters.
699 * @return CONNECTED or DISCONNECTED.
702 IRC_PING(CLIENT *Client, REQUEST *Req)
704 CLIENT *target, *from;
706 assert(Client != NULL);
710 return IRC_WriteErrClient(Client, ERR_NOORIGIN_MSG,
713 /* Don't ignore additional arguments when in "strict" mode */
714 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 2)
718 /* A target has been specified ... */
719 target = Client_Search(Req->argv[1]);
721 if (!target || Client_Type(target) != CLIENT_SERVER)
722 return IRC_WriteErrClient(Client, ERR_NOSUCHSERVER_MSG,
723 Client_ID(Client), Req->argv[1]);
725 if (target != Client_ThisServer()) {
726 /* Ok, we have to forward the PING */
727 if (Client_Type(Client) == CLIENT_SERVER)
728 from = Client_Search(Req->prefix);
732 return IRC_WriteErrClient(Client,
733 ERR_NOSUCHSERVER_MSG,
734 Client_ID(Client), Req->prefix);
736 return IRC_WriteStrClientPrefix(target, from,
737 "PING %s :%s", Req->argv[0],
742 if (Client_Type(Client) == CLIENT_SERVER) {
744 from = Client_Search(Req->prefix);
748 from = Client_ThisServer();
750 return IRC_WriteErrClient(Client, ERR_NOSUCHSERVER_MSG,
751 Client_ID(Client), Req->prefix);
753 Log(LOG_DEBUG, "Connection %d: got PING, sending PONG ...",
754 Client_Conn(Client));
757 return IRC_WriteStrClient(Client, "PONG %s :%s",
758 Client_ID(from), Client_ID(Client));
760 /* Some clients depend on the argument being returned in the PONG
761 * reply (not mentioned in any RFC, though) */
762 return IRC_WriteStrClient(Client, "PONG %s :%s",
763 Client_ID(from), Req->argv[0]);
768 * Handler for the IRC "PONG" command.
770 * @param Client The client from which this command has been received.
771 * @param Req Request structure with prefix and all parameters.
772 * @return CONNECTED or DISCONNECTED.
775 IRC_PONG(CLIENT *Client, REQUEST *Req)
777 CLIENT *target, *from;
784 assert(Client != NULL);
787 /* Wrong number of arguments? */
789 if (Client_Type(Client) == CLIENT_USER)
790 return IRC_WriteErrClient(Client, ERR_NOORIGIN_MSG,
795 if (Client_Type(Client) == CLIENT_USER) {
796 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 2)
800 if (Req->argc == 2 && Client_Type(Client) == CLIENT_SERVER) {
801 target = Client_Search(Req->argv[0]);
803 return IRC_WriteErrClient(Client, ERR_NOSUCHSERVER_MSG,
804 Client_ID(Client), Req->argv[0]);
806 from = Client_Search(Req->prefix);
808 if (target != Client_ThisServer() && target != from) {
809 /* Ok, we have to forward the message. */
811 return IRC_WriteErrClient(Client,
812 ERR_NOSUCHSERVER_MSG,
813 Client_ID(Client), Req->prefix);
815 if (Client_Type(Client_NextHop(target)) != CLIENT_SERVER)
819 return IRC_WriteStrClientPrefix(target, from,
820 "PONG %s :%s", s, Req->argv[1]);
824 /* The connection timestamp has already been updated when the data has
825 * been read from so socket, so we don't need to update it here. */
827 conn = Client_Conn(Client);
830 /* Check authentication PING-PONG ... */
831 auth_ping = Conn_GetAuthPing(conn);
833 LogDebug("AUTH PONG: waiting for token \"%ld\", got \"%s\" ...",
834 auth_ping, Req->argv[0]);
835 if (auth_ping == atoi(Req->argv[0])) {
836 Conn_SetAuthPing(conn, 0);
837 if (Client_Type(Client) == CLIENT_WAITAUTHPING)
840 if (!IRC_WriteStrClient(Client,
841 "To connect, type /QUOTE PONG %ld",
847 if (Client_Type(Client) == CLIENT_SERVER && Conn_LastPing(conn) == 0) {
849 "Synchronization with \"%s\" done (connection %d): %ld second%s [%ld users, %ld channels].",
850 Client_ID(Client), conn, time(NULL) - Conn_GetSignon(conn),
851 time(NULL) - Conn_GetSignon(conn) == 1 ? "" : "s",
852 Client_UserCount(), Channel_CountVisible(NULL));
853 Conn_UpdatePing(conn);
855 LogDebug("Connection %d: received PONG. Lag: %ld seconds.",
856 conn, time(NULL) - Conn_LastPing(conn));
862 * Kill all users with a specific nickname in the network.
864 * @param Nick Nickname.
865 * @param Reason Reason for the KILL.
868 Kill_Nick(char *Nick, char *Reason)
872 assert (Nick != NULL);
873 assert (Reason != NULL);
880 Log(LOG_ERR, "User(s) with nick \"%s\" will be disconnected: %s!",
883 IRC_KILL(Client_ThisServer(), &r);
887 * Change the nickname of a client.
889 * @param Origin The client which caused the nickname change.
890 * @param Target The client of which the nickname should be changed.
891 * @param NewNick The new nickname.
894 Change_Nick(CLIENT *Origin, CLIENT *Target, char *NewNick, bool InformClient)
896 if (Client_Conn(Target) > NONE) {
899 "%s \"%s\" changed nick (connection %d): \"%s\" -> \"%s\".",
900 Client_TypeText(Target), Client_Mask(Target),
901 Client_Conn(Target), Client_ID(Target), NewNick);
902 Conn_UpdateIdle(Client_Conn(Target));
905 LogDebug("%s \"%s\" changed nick: \"%s\" -> \"%s\".",
906 Client_TypeText(Target),
907 Client_Mask(Target), Client_ID(Target), NewNick);
910 /* Inform all servers and users (which have to know) of the new name */
912 IRC_WriteStrClientPrefix(Target, Target, "NICK :%s", NewNick);
913 IRC_WriteStrServersPrefix(NULL, Target, "NICK :%s", NewNick);
915 IRC_WriteStrServersPrefix(Origin, Target, "NICK :%s", NewNick);
916 IRC_WriteStrRelatedPrefix(Target, Target, false, "NICK :%s", NewNick);
918 /* Register old nickname for WHOWAS queries */
919 Client_RegisterWhowas(Target);
921 /* Save new nickname */
922 Client_SetID(Target, NewNick);