2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2018 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"
34 #include "irc-macros.h"
35 #include "irc-write.h"
37 #include "irc-login.h"
39 static void Change_Nick PARAMS((CLIENT * Origin, CLIENT * Target, char *NewNick,
43 * Handler for the IRC "PASS" command.
45 * @param Client The client from which this command has been received.
46 * @param Req Request structure with prefix and all parameters.
47 * @return CONNECTED or DISCONNECTED.
50 IRC_PASS( CLIENT *Client, REQUEST *Req )
52 char *type, *orig_flags;
53 int protohigh, protolow;
55 assert( Client != NULL );
56 assert( Req != NULL );
58 /* Return an error if this is not a local client */
59 if (Client_Conn(Client) <= NONE)
60 return IRC_WriteErrClient(Client, ERR_UNKNOWNCOMMAND_MSG,
61 Client_ID(Client), Req->command);
63 if (Client_Type(Client) == CLIENT_UNKNOWN && Req->argc == 1) {
64 /* Not yet registered "unknown" connection, PASS with one
65 * argument: either a regular client, service, or server
66 * using the old RFC 1459 section 4.1.1 syntax. */
67 LogDebug("Connection %d: got PASS command (RFC 1459) ...",
69 } else if ((Client_Type(Client) == CLIENT_UNKNOWN ||
70 Client_Type(Client) == CLIENT_UNKNOWNSERVER) &&
71 (Req->argc == 3 || Req->argc == 4)) {
72 /* Not yet registered "unknown" connection or outgoing server
73 * link, PASS with three or four argument: server using the
74 * RFC 2813 section 4.1.1 syntax. */
75 LogDebug("Connection %d: got PASS command (RFC 2813, new server link) ...",
77 } else if (Client_Type(Client) == CLIENT_UNKNOWN ||
78 Client_Type(Client) == CLIENT_UNKNOWNSERVER) {
79 /* Unregistered connection, but wrong number of arguments: */
80 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
81 Client_ID(Client), Req->command);
83 /* Registered connection, PASS command is not allowed! */
84 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
88 Conn_SetPassword(Client_Conn(Client), Req->argv[0]);
90 /* Protocol version */
91 if (Req->argc >= 2 && strlen(Req->argv[1]) >= 4) {
97 Req->argv[1][4] = '\0';
98 protolow = atoi(&Req->argv[1][2]);
99 Req->argv[1][2] = '\0';
100 protohigh = atoi(Req->argv[1]);
102 Req->argv[1][2] = c2;
103 Req->argv[1][4] = c4;
105 Client_SetType(Client, CLIENT_GOTPASS_2813);
107 protohigh = protolow = 0;
108 Client_SetType(Client, CLIENT_GOTPASS);
111 /* Protocol type, see doc/Protocol.txt */
112 if (Req->argc >= 2 && strlen(Req->argv[1]) > 4)
113 type = &Req->argv[1][4];
117 /* Protocol flags/options */
119 orig_flags = Req->argv[3];
123 /* Implementation, version and IRC+ flags */
124 if (Req->argc >= 3) {
125 char *impl, *ptr, *serverver, *flags;
128 ptr = strchr(impl, '|');
132 if (type && strcmp(type, PROTOIRCPLUS) == 0) {
133 /* The peer seems to be a server which supports the
134 * IRC+ protocol (see doc/Protocol.txt). */
135 serverver = ptr ? ptr + 1 : "?";
136 flags = strchr(ptr ? serverver : impl, ':');
143 "Peer on connection %d announces itself as %s-%s using protocol %d.%d/IRC+ (flags: \"%s\").",
144 Client_Conn(Client), impl, serverver,
145 protohigh, protolow, flags);
147 /* The peer seems to be a server supporting the
148 * "original" IRC protocol (RFC 2813). */
149 if (strchr(orig_flags, 'Z'))
154 "Peer on connection %d announces itself as \"%s\" using protocol %d.%d (flags: \"%s\").",
155 Client_Conn(Client), impl,
156 protohigh, protolow, flags);
158 Client_SetFlags(Client, flags);
165 * Handler for the IRC "NICK" command.
167 * @param Client The client from which this command has been received.
168 * @param Req Request structure with prefix and all parameters.
169 * @return CONNECTED or DISCONNECTED.
172 IRC_NICK( CLIENT *Client, REQUEST *Req )
174 CLIENT *intr_c, *target, *c;
176 char *nick, *user, *hostname, *modes, *info;
179 assert( Client != NULL );
180 assert( Req != NULL );
182 /* Some IRC clients, for example BitchX, send the NICK and USER
183 * commands in the wrong order ... */
184 if(Client_Type(Client) == CLIENT_UNKNOWN
185 || Client_Type(Client) == CLIENT_GOTPASS
186 || Client_Type(Client) == CLIENT_GOTNICK
188 || Client_Type(Client) == CLIENT_GOTUSER
190 || Client_Type(Client) == CLIENT_USER
191 || Client_Type(Client) == CLIENT_SERVICE
192 || (Client_Type(Client) == CLIENT_SERVER && Req->argc == 1))
194 /* User registration or change of nickname */
195 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 1)
197 /* Search "target" client */
198 if (Client_Type(Client) == CLIENT_SERVER) {
199 _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
200 target = Client_Search(Req->prefix);
202 return IRC_WriteErrClient(Client,
207 /* Is this a restricted client? */
208 if (Client_HasMode(Client, 'r'))
209 return IRC_WriteErrClient(Client,
216 /* If the clients tries to change to its own nickname we won't
217 * do anything. This is how the original ircd behaves and some
218 * clients (for example Snak) expect it to be like this.
219 * But I doubt that this is "really the right thing" ... */
220 if (strcmp(Client_ID(target), Req->argv[0]) == 0)
224 /* Check that the new nickname is available. Special case:
225 * the client only changes from/to upper to lower case. */
226 if (strcasecmp(Client_ID(target), Req->argv[0]) != 0) {
227 if (!Client_CheckNick(target, Req->argv[0]))
231 if (Client_Type(target) != CLIENT_USER &&
232 Client_Type(target) != CLIENT_SERVICE &&
233 Client_Type(target) != CLIENT_SERVER) {
235 LogDebug("Connection %d: got valid NICK command ...",
236 Client_Conn( Client ));
238 /* Register new nickname of this client */
239 Client_SetID( target, Req->argv[0] );
243 #ifdef HAVE_ARC4RANDOM
244 Conn_SetAuthPing(Client_Conn(Client), arc4random());
246 Conn_SetAuthPing(Client_Conn(Client), rand());
248 Conn_WriteStr(Client_Conn(Client), "PING :%ld",
249 Conn_GetAuthPing(Client_Conn(Client)));
250 LogDebug("Connection %d: sent AUTH PING %ld ...",
252 Conn_GetAuthPing(Client_Conn(Client)));
256 /* If we received a valid USER command already then
257 * register the new client! */
258 if( Client_Type( Client ) == CLIENT_GOTUSER )
259 return Login_User( Client );
261 Client_SetType( Client, CLIENT_GOTNICK );
263 /* Nickname change */
265 /* Check that the user isn't on any channels set +N */
266 if(Client_Type(Client) == CLIENT_USER &&
267 !Client_HasMode(Client, 'o')) {
268 chan = Channel_First();
270 if(Channel_HasMode(chan, 'N') &&
271 Channel_IsMemberOf(chan, Client))
272 return IRC_WriteErrClient(Client,
273 ERR_NONICKCHANGE_MSG,
276 chan = Channel_Next(chan);
280 Change_Nick(Client, target, Req->argv[0],
281 Client_Type(Client) == CLIENT_USER ? true : false);
282 IRC_SetPenalty(target, 2);
286 } else if(Client_Type(Client) == CLIENT_SERVER ||
287 Client_Type(Client) == CLIENT_SERVICE) {
288 /* Server or service introduces new client */
290 /* Bad number of parameters? */
291 if (Req->argc != 2 && Req->argc != 7)
292 return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
293 Client_ID(Client), Req->command);
295 if (Req->argc >= 7) {
296 /* RFC 2813 compatible syntax */
298 hops = atoi(Req->argv[1]);
300 hostname = Req->argv[3];
301 token = atoi(Req->argv[4]);
302 modes = Req->argv[5] + 1;
305 /* RFC 1459 compatible syntax */
309 hostname = Client_ID(Client);
310 token = atoi(Req->argv[1]);
315 c = Client_Search(nick);
318 * the new nick is already present on this server:
319 * the new and the old one have to be disconnected now.
322 "Server %s introduces already registered nick \"%s\"!",
323 Client_ID(Client), Req->argv[0]);
324 return IRC_KillClient(Client, NULL, Req->argv[0],
328 /* Find the Server this client is connected to */
329 intr_c = Client_GetFromToken(Client, token);
332 "Server %s introduces nick \"%s\" on unknown server!?",
333 Client_ID(Client), Req->argv[0]);
334 return IRC_KillClient(Client, NULL, Req->argv[0],
338 c = Client_NewRemoteUser(intr_c, nick, hops, user, hostname,
339 token, modes, info, true);
341 /* Out of memory, we need to disconnect client to keep
342 * network state consistent! */
344 "Can't create client structure! (on connection %d)",
345 Client_Conn(Client));
346 return IRC_KillClient(Client, NULL, Req->argv[0],
350 /* RFC 2813: client is now fully registered, inform all the
351 * other servers about the new user.
352 * RFC 1459: announce the new client only after receiving the
353 * USER command, first we need more information! */
355 LogDebug("Client \"%s\" is being registered (RFC 1459) ...",
357 Client_SetType(c, CLIENT_GOTNICK);
359 Client_Introduce(Client, c, CLIENT_USER);
364 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
369 * Handler for the IRC "SVSNICK" command.
371 * @param Client The client from which this command has been received.
372 * @param Req Request structure with prefix and all parameters.
373 * @return CONNECTED or DISCONNECTED.
376 IRC_SVSNICK(CLIENT *Client, REQUEST *Req)
378 CLIENT *from, *target;
380 assert(Client != NULL);
383 _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
385 /* Search the originator */
386 from = Client_Search(Req->prefix);
390 /* Search the target */
391 target = Client_Search(Req->argv[0]);
392 if (!target || Client_Type(target) != CLIENT_USER)
393 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
394 Client_ID(Client), Req->argv[0]);
396 if (Client_Conn(target) <= NONE) {
397 /* We have to forward the message to the server handling
398 * this user; this is required to make sure all servers
399 * in the network do follow the nick name change! */
400 return IRC_WriteStrClientPrefix(Client_NextHop(target), from,
402 Req->argv[0], Req->argv[1]);
405 /* Make sure that the new nickname is valid */
406 if (!Client_CheckNick(from, Req->argv[1]))
409 Change_Nick(from, target, Req->argv[1], true);
414 * Handler for the IRC "USER" command.
416 * @param Client The client from which this command has been received.
417 * @param Req Request structure with prefix and all parameters.
418 * @return CONNECTED or DISCONNECTED.
421 IRC_USER(CLIENT * Client, REQUEST * Req)
426 assert(Client != NULL);
429 if (Client_Type(Client) == CLIENT_GOTNICK ||
431 Client_Type(Client) == CLIENT_UNKNOWN ||
433 Client_Type(Client) == CLIENT_GOTPASS)
436 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 4)
438 /* User name: only alphanumeric characters and limited
439 punctuation is allowed.*/
442 if (!isalnum((int)*ptr) &&
443 *ptr != '+' && *ptr != '-' && *ptr != '@' &&
444 *ptr != '.' && *ptr != '_') {
445 Conn_Close(Client_Conn(Client), NULL,
446 "Invalid user name", true);
452 /* Save the received username for authentication, and use
453 * it up to the first '@' as default user name (like ircd2.11,
454 * bahamut, ircd-seven, ...), prefixed with '~', if needed: */
455 Client_SetOrigUser(Client, Req->argv[0]);
456 ptr = strchr(Req->argv[0], '@');
460 ptr = Client_User(Client);
461 if (!ptr || !*ptr || *ptr == '~')
462 Client_SetUser(Client, Req->argv[0], false);
464 Client_SetUser(Client, Req->argv[0], false);
467 /* "Real name" or user info text: Don't set it to the empty
468 * string, the original ircd can't deal with such "real names"
469 * (e. g. "USER user * * :") ... */
471 Client_SetInfo(Client, Req->argv[3]);
473 Client_SetInfo(Client, "-");
475 LogDebug("Connection %d: got valid USER command ...",
476 Client_Conn(Client));
477 if (Client_Type(Client) == CLIENT_GOTNICK)
478 return Login_User(Client);
480 Client_SetType(Client, CLIENT_GOTUSER);
483 } else if (Client_Type(Client) == CLIENT_SERVER ||
484 Client_Type(Client) == CLIENT_SERVICE) {
485 /* Server/service updating an user */
486 _IRC_ARGC_EQ_OR_RETURN_(Client, Req, 4)
487 _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
489 c = Client_Search(Req->prefix);
491 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
495 Client_SetUser(c, Req->argv[0], true);
496 Client_SetOrigUser(c, Req->argv[0]);
497 Client_SetHostname(c, Req->argv[1]);
498 Client_SetInfo(c, Req->argv[3]);
500 LogDebug("Connection %d: got valid USER command for \"%s\".",
501 Client_Conn(Client), Client_Mask(c));
503 /* RFC 1459 style user registration?
504 * Introduce client to network: */
505 if (Client_Type(c) == CLIENT_GOTNICK)
506 Client_Introduce(Client, c, CLIENT_USER);
509 } else if (Client_Type(Client) == CLIENT_USER) {
510 /* Already registered connection */
511 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
514 /* Unexpected/invalid connection state? */
515 return IRC_WriteErrClient(Client, ERR_NOTREGISTERED_MSG,
521 * Handler for the IRC "SERVICE" command.
523 * At the moment ngIRCd doesn't support directly linked services, so this
524 * function returns ERR_ERRONEUSNICKNAME when the SERVICE command has not been
525 * received from a peer server.
527 * @param Client The client from which this command has been received.
528 * @param Req Request structure with prefix and all parameters.
529 * @return CONNECTED or DISCONNECTED.
532 IRC_SERVICE(CLIENT *Client, REQUEST *Req)
535 char *nick, *user, *host, *info, *modes, *ptr;
538 assert(Client != NULL);
541 if (Client_Type(Client) != CLIENT_GOTPASS &&
542 Client_Type(Client) != CLIENT_SERVER)
543 return IRC_WriteErrClient(Client, ERR_ALREADYREGISTRED_MSG,
546 if (Client_Type(Client) != CLIENT_SERVER)
547 return IRC_WriteErrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
548 Client_ID(Client), Req->argv[0]);
551 user = NULL; host = NULL;
552 token = atoi(Req->argv[1]);
553 hops = atoi(Req->argv[4]);
556 /* Validate service name ("nickname") */
557 c = Client_Search(nick);
559 /* Nickname collision: disconnect (KILL) both clients! */
561 "Server %s introduces already registered service \"%s\"!",
562 Client_ID(Client), nick);
563 return IRC_KillClient(Client, NULL, nick, "Nick collision");
566 /* Get the server to which the service is connected */
567 intr_c = Client_GetFromToken(Client, token);
570 "Server %s introduces service \"%s\" on unknown server!?",
571 Client_ID(Client), nick);
572 return IRC_KillClient(Client, NULL, nick, "Unknown server");
575 /* Get user and host name */
576 ptr = strchr(nick, '@');
582 host = Client_Hostname(intr_c);
583 ptr = strchr(nick, '!');
591 /* According to RFC 2812/2813 parameter 4 <type> "is currently reserved
592 * for future usage"; but we use it to transfer the modes and check
593 * that the first character is a '+' sign and ignore it otherwise. */
594 modes = (Req->argv[3][0] == '+') ? ++Req->argv[3] : "";
596 c = Client_NewRemoteUser(intr_c, nick, hops, user, host,
597 token, modes, info, true);
599 /* Couldn't create client structure, so KILL the service to
600 * keep network status consistent ... */
602 "Can't create client structure! (on connection %d)",
603 Client_Conn(Client));
604 return IRC_KillClient(Client, NULL, nick, "Server error");
607 Client_Introduce(Client, c, CLIENT_SERVICE);
612 * Handler for the IRC "WEBIRC" command.
614 * @param Client The client from which this command has been received.
615 * @param Req Request structure with prefix and all parameters.
616 * @return CONNECTED or DISCONNECTED.
619 IRC_WEBIRC(CLIENT *Client, REQUEST *Req)
621 if (!Conf_WebircPwd[0] || strcmp(Req->argv[0], Conf_WebircPwd) != 0)
622 return IRC_WriteErrClient(Client, ERR_PASSWDMISMATCH_MSG,
625 LogDebug("Connection %d: got valid WEBIRC command: user=%s, host=%s, ip=%s",
626 Client_Conn(Client), Req->argv[1], Req->argv[2], Req->argv[3]);
628 Client_SetUser(Client, Req->argv[1], true);
629 Client_SetOrigUser(Client, Req->argv[1]);
631 Client_SetHostname(Client, Req->argv[2]);
633 Client_SetHostname(Client, Req->argv[3]);
634 Client_SetIPAText(Client, Req->argv[3]);
640 * Handler for the IRC "QUIT" command.
642 * @param Client The client from which this command has been received.
643 * @param Req Request structure with prefix and all parameters.
644 * @return CONNECTED or DISCONNECTED.
647 IRC_QUIT( CLIENT *Client, REQUEST *Req )
650 char quitmsg[COMMAND_LEN];
652 assert(Client != NULL);
656 strlcpy(quitmsg, Req->argv[0], sizeof quitmsg);
658 if (Client_Type(Client) == CLIENT_SERVER) {
660 _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
662 target = Client_Search(Req->prefix);
665 "Got QUIT from %s for unknown client!?",
670 if (target != Client) {
671 Client_Destroy(target, "Got QUIT command",
672 Req->argc == 1 ? quitmsg : NULL, true);
675 Conn_Close(Client_Conn(Client), "Got QUIT command",
676 Req->argc == 1 ? quitmsg : NULL, true);
680 if (Req->argc == 1 && quitmsg[0] != '\"') {
681 /* " " to avoid confusion */
682 strlcpy(quitmsg, "\"", sizeof quitmsg);
683 strlcat(quitmsg, Req->argv[0], sizeof quitmsg-1);
684 strlcat(quitmsg, "\"", sizeof quitmsg );
687 /* User, Service, or not yet registered */
688 Conn_Close(Client_Conn(Client), "Got QUIT command",
689 Req->argc == 1 ? quitmsg : NULL, true);
698 * Handler for HTTP command, e.g. GET and POST
700 * We handle these commands here to avoid the quite long timeout when
701 * some user tries to access this IRC daemon using an web browser ...
703 * @param Client The client from which this command has been received.
704 * @param Req Request structure with prefix and all parameters.
705 * @return CONNECTED or DISCONNECTED.
708 IRC_QUIT_HTTP( CLIENT *Client, REQUEST *Req )
711 Req->argv[0] = "Oops, HTTP request received? This is IRC!";
712 return IRC_QUIT(Client, Req);
713 } /* IRC_QUIT_HTTP */
718 * Handler for the IRC "PING" command.
720 * @param Client The client from which this command has been received.
721 * @param Req Request structure with prefix and all parameters.
722 * @return CONNECTED or DISCONNECTED.
725 IRC_PING(CLIENT *Client, REQUEST *Req)
727 CLIENT *target, *from;
729 assert(Client != NULL);
733 return IRC_WriteErrClient(Client, ERR_NOORIGIN_MSG,
736 /* Don't ignore additional arguments when in "strict" mode */
737 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 2)
741 /* A target has been specified ... */
742 target = Client_Search(Req->argv[1]);
744 if (!target || Client_Type(target) != CLIENT_SERVER)
745 return IRC_WriteErrClient(Client, ERR_NOSUCHSERVER_MSG,
746 Client_ID(Client), Req->argv[1]);
748 if (target != Client_ThisServer()) {
749 /* Ok, we have to forward the PING */
750 if (Client_Type(Client) == CLIENT_SERVER) {
751 _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
752 from = Client_Search(Req->prefix);
756 return IRC_WriteErrClient(Client,
757 ERR_NOSUCHSERVER_MSG,
758 Client_ID(Client), Req->prefix);
760 return IRC_WriteStrClientPrefix(target, from,
761 "PING %s :%s", Req->argv[0],
766 if (Client_Type(Client) == CLIENT_SERVER) {
768 from = Client_Search(Req->prefix);
772 from = Client_ThisServer();
774 return IRC_WriteErrClient(Client, ERR_NOSUCHSERVER_MSG,
775 Client_ID(Client), Req->prefix);
777 Log(LOG_DEBUG, "Connection %d: got PING, sending PONG ...",
778 Client_Conn(Client));
781 return IRC_WriteStrClient(Client, "PONG %s :%s",
782 Client_ID(from), Client_ID(Client));
784 /* Some clients depend on the argument being returned in the PONG
785 * reply (not mentioned in any RFC, though) */
786 return IRC_WriteStrClient(Client, "PONG %s :%s",
787 Client_ID(from), Req->argv[0]);
792 * Handler for the IRC "PONG" command.
794 * @param Client The client from which this command has been received.
795 * @param Req Request structure with prefix and all parameters.
796 * @return CONNECTED or DISCONNECTED.
799 IRC_PONG(CLIENT *Client, REQUEST *Req)
801 CLIENT *target, *from;
808 assert(Client != NULL);
811 /* Wrong number of arguments? */
813 if (Client_Type(Client) == CLIENT_USER)
814 return IRC_WriteErrClient(Client, ERR_NOORIGIN_MSG,
819 if (Client_Type(Client) == CLIENT_USER) {
820 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 2)
824 if (Req->argc == 2 && Client_Type(Client) == CLIENT_SERVER) {
825 _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
827 target = Client_Search(Req->argv[0]);
829 return IRC_WriteErrClient(Client, ERR_NOSUCHSERVER_MSG,
830 Client_ID(Client), Req->argv[0]);
832 from = Client_Search(Req->prefix);
834 if (target != Client_ThisServer() && target != from) {
835 /* Ok, we have to forward the message. */
837 return IRC_WriteErrClient(Client,
838 ERR_NOSUCHSERVER_MSG,
839 Client_ID(Client), Req->prefix);
841 if (Client_Type(Client_NextHop(target)) != CLIENT_SERVER)
845 return IRC_WriteStrClientPrefix(target, from,
846 "PONG %s :%s", s, Req->argv[1]);
850 /* The connection timestamp has already been updated when the data has
851 * been read from so socket, so we don't need to update it here. */
853 conn = Client_Conn(Client);
856 /* Check authentication PING-PONG ... */
857 auth_ping = Conn_GetAuthPing(conn);
859 LogDebug("AUTH PONG: waiting for token \"%ld\", got \"%s\" ...",
860 auth_ping, Req->argv[0]);
861 if (auth_ping == atol(Req->argv[0])) {
862 Conn_SetAuthPing(conn, 0);
863 if (Client_Type(Client) == CLIENT_WAITAUTHPING)
866 if (!IRC_WriteStrClient(Client,
867 "NOTICE %s :To connect, type /QUOTE PONG %ld",
868 Client_ID(Client), auth_ping))
873 if (Client_Type(Client) == CLIENT_SERVER && Conn_LastPing(conn) == 0) {
875 "Synchronization with \"%s\" done (connection %d): %ld second%s [%ld users, %ld channels].",
876 Client_ID(Client), conn,
877 (long)(time(NULL) - Conn_GetSignon(conn)),
878 time(NULL) - Conn_GetSignon(conn) == 1 ? "" : "s",
879 Client_UserCount(), Channel_CountVisible(NULL));
880 Conn_UpdatePing(conn);
882 LogDebug("Connection %d: received PONG. Lag: %ld seconds.",
883 conn, (long)(time(NULL) - Conn_LastPing(conn)));
889 * Change the nickname of a client.
891 * @param Origin The client which caused the nickname change.
892 * @param Target The client of which the nickname should be changed.
893 * @param NewNick The new nickname.
896 Change_Nick(CLIENT *Origin, CLIENT *Target, char *NewNick, bool InformClient)
898 if (Client_Conn(Target) > NONE) {
901 "%s \"%s\" changed nick (connection %d): \"%s\" -> \"%s\".",
902 Client_TypeText(Target), Client_Mask(Target),
903 Client_Conn(Target), Client_ID(Target), NewNick);
904 Conn_UpdateIdle(Client_Conn(Target));
907 LogDebug("%s \"%s\" changed nick: \"%s\" -> \"%s\".",
908 Client_TypeText(Target),
909 Client_Mask(Target), Client_ID(Target), NewNick);
912 /* Inform all servers and users (which have to know) of the new name */
914 IRC_WriteStrClientPrefix(Target, Target, "NICK :%s", NewNick);
915 IRC_WriteStrServersPrefix(NULL, Target, "NICK :%s", NewNick);
917 IRC_WriteStrServersPrefix(Origin, Target, "NICK :%s", NewNick);
918 IRC_WriteStrRelatedPrefix(Target, Target, false, "NICK :%s", NewNick);
920 /* Register old nickname for WHOWAS queries */
921 Client_RegisterWhowas(Target);
923 /* Save new nickname */
924 Client_SetID(Target, NewNick);