2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2013 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.
28 #include "conn-func.h"
41 #include "irc-macros.h"
42 #include "irc-write.h"
43 #include "client-cap.h"
52 t_diff(time_t *t, const time_t d)
60 return (unsigned int)diff;
64 uptime_days(time_t *now)
66 return t_diff(now, 60 * 60 * 24);
70 uptime_hrs(time_t *now)
72 return t_diff(now, 60 * 60);
76 uptime_mins(time_t *now)
78 return t_diff(now, 60);
82 write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags)
84 return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client),
85 channelname, Client_User(c),
86 Client_HostnameDisplayed(c),
87 Client_ID(Client_Introducer(c)), Client_ID(c),
88 flags, Client_Hops(c), Client_Info(c));
92 * Return channel user mode prefix(es).
94 * @param Client The client requesting the mode prefixes.
95 * @param chan_user_modes String with channel user modes.
96 * @param str String buffer to which the prefix(es) will be appended.
97 * @param len Size of "str" buffer.
98 * @return Pointer to "str".
101 who_flags_qualifier(CLIENT *Client, const char *chan_user_modes,
102 char *str, size_t len)
104 assert(Client != NULL);
106 if (Client_Cap(Client) & CLIENT_CAP_MULTI_PREFIX) {
107 if (strchr(chan_user_modes, 'q'))
108 strlcat(str, "~", len);
109 if (strchr(chan_user_modes, 'a'))
110 strlcat(str, "&", len);
111 if (strchr(chan_user_modes, 'o'))
112 strlcat(str, "@", len);
113 if (strchr(chan_user_modes, 'h'))
114 strlcat(str, "%", len);
115 if (strchr(chan_user_modes, 'v'))
116 strlcat(str, "+", len);
121 if (strchr(chan_user_modes, 'q'))
122 strlcat(str, "~", len);
123 else if (strchr(chan_user_modes, 'a'))
124 strlcat(str, "&", len);
125 else if (strchr(chan_user_modes, 'o'))
126 strlcat(str, "@", len);
127 else if (strchr(chan_user_modes, 'h'))
128 strlcat(str, "%", len);
129 else if (strchr(chan_user_modes, 'v'))
130 strlcat(str, "+", len);
136 * Send WHO reply for a "channel target" ("WHO #channel").
138 * @param Client Client requesting the information.
139 * @param Chan Channel being requested.
140 * @param OnlyOps Only display IRC operators.
141 * @return CONNECTED or DISCONNECTED.
144 IRC_WHO_Channel(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
146 bool is_visible, is_member, is_ircop;
152 assert( Client != NULL );
153 assert( Chan != NULL );
155 IRC_SetPenalty(Client, 1);
157 is_member = Channel_IsMemberOf(Chan, Client);
159 /* Secret channel? */
160 if (!is_member && Channel_HasMode(Chan, 's'))
161 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG,
162 Client_ID(Client), Channel_Name(Chan));
164 cl2chan = Channel_FirstMember(Chan);
165 for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
166 c = Channel_GetClient(cl2chan);
168 is_ircop = Client_HasMode(c, 'o');
169 if (OnlyOps && !is_ircop)
172 is_visible = Client_HasMode(c, 'i');
173 if (is_member || is_visible) {
174 memset(flags, 0, sizeof(flags));
176 if (Client_HasMode(c, 'a'))
177 flags[0] = 'G'; /* away */
184 who_flags_qualifier(Client, Channel_UserModes(Chan, c),
185 flags, sizeof(flags));
187 if (!write_whoreply(Client, c, Channel_Name(Chan),
194 /* If there are a lot of clients, augment penalty a bit */
195 if (count > MAX_RPL_WHO)
196 IRC_SetPenalty(Client, 1);
198 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client),
203 * Send WHO reply for a "mask target" ("WHO m*sk").
205 * @param Client Client requesting the information.
206 * @param Mask Mask being requested or NULL for "all" clients.
207 * @param OnlyOps Only display IRC operators.
208 * @return CONNECTED or DISCONNECTED.
211 IRC_WHO_Mask(CLIENT *Client, char *Mask, bool OnlyOps)
216 bool client_match, is_visible;
220 assert (Client != NULL);
225 IRC_SetPenalty(Client, 3);
226 for (c = Client_First(); c != NULL; c = Client_Next(c)) {
227 if (Client_Type(c) != CLIENT_USER)
230 if (OnlyOps && !Client_HasMode(c, 'o'))
234 /* Match pattern against user host/server/name/nick */
235 client_match = MatchCaseInsensitive(Mask,
238 client_match = MatchCaseInsensitive(Mask,
239 Client_ID(Client_Introducer(c)));
241 client_match = MatchCaseInsensitive(Mask,
244 client_match = MatchCaseInsensitive(Mask,
247 continue; /* no match: skip this client */
250 is_visible = !Client_HasMode(c, 'i');
252 /* Target client is invisible, but mask matches exactly? */
253 if (!is_visible && Mask && strcasecmp(Client_ID(c), Mask) == 0)
256 /* Target still invisible, but are both on the same channel? */
258 cl2chan = Channel_FirstChannelOf(Client);
259 while (cl2chan && !is_visible) {
260 chan = Channel_GetChannel(cl2chan);
261 if (Channel_IsMemberOf(chan, c))
263 cl2chan = Channel_NextChannelOf(Client, cl2chan);
267 if (!is_visible) /* target user is not visible */
270 if (IRC_CheckListTooBig(Client, count, MAX_RPL_WHO, "WHO"))
273 memset(flags, 0, sizeof(flags));
275 if (Client_HasMode(c, 'a'))
276 flags[0] = 'G'; /* away */
280 if (Client_HasMode(c, 'o'))
283 if (!write_whoreply(Client, c, "*", flags))
288 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client),
293 * Generate WHOIS reply of one actual client.
295 * @param Client The client from which this command has been received.
296 * @param from The client requesting the information ("originator").
297 * @param c The client of which information should be returned.
298 * @return CONNECTED or DISCONNECTED.
301 IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c)
303 char str[COMMAND_LEN];
307 assert(Client != NULL);
308 assert(from != NULL);
311 /* Nick, user, hostname and client info */
312 if (!IRC_WriteStrClient(from, RPL_WHOISUSER_MSG, Client_ID(from),
313 Client_ID(c), Client_User(c),
314 Client_HostnameDisplayed(c), Client_Info(c)))
318 if (!IRC_WriteStrClient(from, RPL_WHOISSERVER_MSG, Client_ID(from),
319 Client_ID(c), Client_ID(Client_Introducer(c)),
320 Client_Info(Client_Introducer(c))))
324 snprintf(str, sizeof(str), RPL_WHOISCHANNELS_MSG,
325 Client_ID(from), Client_ID(c));
326 cl2chan = Channel_FirstChannelOf(c);
328 chan = Channel_GetChannel(cl2chan);
329 assert(chan != NULL);
332 cl2chan = Channel_NextChannelOf(c, cl2chan);
334 /* Secret channel? */
335 if (Channel_HasMode(chan, 's')
336 && !Channel_IsMemberOf(chan, Client))
339 /* Local channel and request is not from a user? */
340 if (Client_Type(Client) == CLIENT_SERVER
341 && Channel_IsLocal(chan))
344 /* Concatenate channel names */
345 if (str[strlen(str) - 1] != ':')
346 strlcat(str, " ", sizeof(str));
348 who_flags_qualifier(Client, Channel_UserModes(chan, c),
350 strlcat(str, Channel_Name(chan), sizeof(str));
352 if (strlen(str) > (COMMAND_LEN - CHANNEL_NAME_LEN - 4)) {
353 /* Line becomes too long: send it! */
354 if (!IRC_WriteStrClient(Client, "%s", str))
356 snprintf(str, sizeof(str), RPL_WHOISCHANNELS_MSG,
357 Client_ID(from), Client_ID(c));
360 if(str[strlen(str) - 1] != ':') {
361 /* There is data left to send: */
362 if (!IRC_WriteStrClient(Client, "%s", str))
367 if (Client_Type(c) == CLIENT_SERVICE &&
368 !IRC_WriteStrClient(from, RPL_WHOISSERVICE_MSG,
369 Client_ID(from), Client_ID(c)))
373 if (Client_Type(c) != CLIENT_SERVICE &&
374 Client_HasMode(c, 'o') &&
375 !IRC_WriteStrClient(from, RPL_WHOISOPERATOR_MSG,
376 Client_ID(from), Client_ID(c)))
380 if (Client_HasMode(c, 'B') &&
381 !IRC_WriteStrClient(from, RPL_WHOISBOT_MSG,
382 Client_ID(from), Client_ID(c)))
385 /* Connected using SSL? */
386 if (Conn_UsesSSL(Client_Conn(c))) {
387 if (!IRC_WriteStrClient(from, RPL_WHOISSSL_MSG, Client_ID(from),
391 /* Certificate fingerprint? */
392 if (Conn_GetCertFp(Client_Conn(c)) &&
394 !IRC_WriteStrClient(from, RPL_WHOISCERTFP_MSG,
395 Client_ID(from), Client_ID(c),
396 Conn_GetCertFp(Client_Conn(c))))
400 /* Registered nickname? */
401 if (Client_HasMode(c, 'R') &&
402 !IRC_WriteStrClient(from, RPL_WHOISREGNICK_MSG,
403 Client_ID(from), Client_ID(c)))
406 /* Local client and requester is the user itself or an IRC Op? */
407 if (Client_Conn(c) > NONE &&
408 (from == c || (!Conf_MorePrivacy && Client_HasMode(from, 'o')))) {
409 /* Client hostname */
410 if (!IRC_WriteStrClient(from, RPL_WHOISHOST_MSG,
411 Client_ID(from), Client_ID(c),
412 Client_Hostname(c), Client_IPAText(c)))
415 if (!IRC_WriteStrClient(from, RPL_WHOISMODES_MSG,
416 Client_ID(from), Client_ID(c), Client_Modes(c)))
420 /* Idle and signon time (local clients only!) */
421 if (!Conf_MorePrivacy && Client_Conn(c) > NONE &&
422 !IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
423 Client_ID(from), Client_ID(c),
424 (unsigned long)Conn_GetIdle(Client_Conn(c)),
425 (unsigned long)Conn_GetSignon(Client_Conn(c))))
429 if (Client_HasMode(c, 'a') &&
430 !IRC_WriteStrClient(from, RPL_AWAY_MSG,
431 Client_ID(from), Client_ID(c), Client_Away(c)))
438 WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry)
442 (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y",
443 localtime(&entry->time));
445 if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix),
446 entry->id, entry->user, entry->host, entry->info))
449 return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix),
450 entry->id, entry->server, t_str);
455 Show_MOTD_SSLInfo(CLIENT *Client)
457 char buf[COMMAND_LEN];
460 if (Conn_GetCipherInfo(Client_Conn(Client), c_str, sizeof(c_str))) {
461 snprintf(buf, sizeof(buf), "Connected using Cipher %s", c_str);
462 if (!IRC_WriteStrClient(Client, RPL_MOTD_MSG,
463 Client_ID(Client), buf))
467 if (Conn_GetCertFp(Client_Conn(Client))) {
468 snprintf(buf, sizeof(buf),
469 "Your client certificate fingerprint is: %s",
470 Conn_GetCertFp(Client_Conn(Client)));
471 if (!IRC_WriteStrClient(Client, RPL_MOTD_MSG,
472 Client_ID(Client), buf))
480 Show_MOTD_SSLInfo(UNUSED CLIENT *c)
486 /* Global functions */
489 * Handler for the IRC command "ADMIN".
491 * @param Client The client from which this command has been received.
492 * @param Req Request structure with prefix and all parameters.
493 * @return CONNECTED or DISCONNECTED.
496 IRC_ADMIN(CLIENT *Client, REQUEST *Req )
498 CLIENT *target, *prefix;
500 assert( Client != NULL );
501 assert( Req != NULL );
503 IRC_SetPenalty(Client, 1);
505 _IRC_GET_SENDER_OR_RETURN_(prefix, Req, Client)
506 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, prefix)
509 if(target != Client_ThisServer()) {
510 IRC_WriteStrClientPrefix(target, prefix,
511 "ADMIN %s", Client_ID(target));
515 if (!IRC_WriteStrClient(Client, RPL_ADMINME_MSG, Client_ID(prefix),
518 if (!IRC_WriteStrClient(Client, RPL_ADMINLOC1_MSG, Client_ID(prefix),
521 if (!IRC_WriteStrClient(Client, RPL_ADMINLOC2_MSG, Client_ID(prefix),
524 if (!IRC_WriteStrClient(Client, RPL_ADMINEMAIL_MSG, Client_ID(prefix),
525 Conf_ServerAdminMail))
532 * Handler for the IRC command "INFO".
534 * @param Client The client from which this command has been received.
535 * @param Req Request structure with prefix and all parameters.
536 * @return CONNECTED or DISCONNECTED.
539 IRC_INFO(CLIENT * Client, REQUEST * Req)
541 CLIENT *target, *prefix;
544 assert(Client != NULL);
547 IRC_SetPenalty(Client, 2);
549 _IRC_GET_SENDER_OR_RETURN_(prefix, Req, Client)
550 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, prefix)
553 if (target != Client_ThisServer()) {
554 IRC_WriteStrClientPrefix(target, prefix, "INFO %s",
559 if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix),
563 #if defined(__DATE__) && defined(__TIME__)
564 snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__);
565 if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
569 strlcpy(msg, "On-line since ", sizeof(msg));
570 strlcat(msg, NGIRCd_StartStr, sizeof(msg));
571 if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
574 if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix)))
581 * Handler for the IRC "ISON" command.
583 * @param Client The client from which this command has been received.
584 * @param Req Request structure with prefix and all parameters.
585 * @return CONNECTED or DISCONNECTED.
588 IRC_ISON( CLIENT *Client, REQUEST *Req )
590 char rpl[COMMAND_LEN];
595 assert(Client != NULL);
598 strlcpy(rpl, RPL_ISON_MSG, sizeof rpl);
599 for (i = 0; i < Req->argc; i++) {
600 /* "All" ircd even parse ":<x> <y> ..." arguments and split
601 * them up; so we do the same ... */
602 ptr = strtok(Req->argv[i], " ");
605 c = Client_Search(ptr);
606 if (c && Client_Type(c) == CLIENT_USER) {
607 strlcat(rpl, Client_ID(c), sizeof(rpl));
608 strlcat(rpl, " ", sizeof(rpl));
610 ptr = strtok(NULL, " ");
613 ngt_TrimLastChr(rpl, ' ');
615 return IRC_WriteStrClient(Client, rpl, Client_ID(Client));
619 * Handler for the IRC "LINKS" command.
621 * @param Client The client from which this command has been received.
622 * @param Req Request structure with prefix and all parameters.
623 * @return CONNECTED or DISCONNECTED.
626 IRC_LINKS(CLIENT *Client, REQUEST *Req)
628 CLIENT *target, *from, *c;
631 assert(Client != NULL);
634 IRC_SetPenalty(Client, 1);
636 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
638 /* Get pointer to server mask or "*", if none given */
640 mask = Req->argv[Req->argc - 1];
645 if (Req->argc == 2) {
646 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, from)
647 if (target != Client_ThisServer()) {
648 IRC_WriteStrClientPrefix(target, from,
649 "LINKS %s %s", Client_ID(target),
657 if (Client_Type(c) == CLIENT_SERVER
658 && MatchCaseInsensitive(mask, Client_ID(c))) {
659 if (!IRC_WriteStrClient(from, RPL_LINKS_MSG,
660 Client_ID(from), Client_ID(c),
661 Client_ID(Client_TopServer(c)
662 ? Client_TopServer(c)
663 : Client_ThisServer()),
664 Client_Hops(c), Client_Info(c)))
669 return IRC_WriteStrClient(from, RPL_ENDOFLINKS_MSG,
670 Client_ID(from), mask);
674 * Handler for the IRC "LUSERS" command.
676 * @param Client The client from which this command has been received.
677 * @param Req Request structure with prefix and all parameters.
678 * @return CONNECTED or DISCONNECTED.
681 IRC_LUSERS( CLIENT *Client, REQUEST *Req )
683 CLIENT *target, *from;
685 assert( Client != NULL );
686 assert( Req != NULL );
688 IRC_SetPenalty(Client, 1);
690 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
691 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 1, from)
694 if (target != Client_ThisServer()) {
695 IRC_WriteStrClientPrefix(target, from,
696 "LUSERS %s %s", Req->argv[0],
701 return IRC_Send_LUSERS(from);
705 * Handler for the IRC command "SERVLIST".
707 * @param Client The client from which this command has been received.
708 * @param Req Request structure with prefix and all parameters.
709 * @return CONNECTED or DISCONNECTED.
712 IRC_SERVLIST(CLIENT *Client, REQUEST *Req)
716 assert(Client != NULL);
719 IRC_SetPenalty(Client, 1);
721 if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) {
722 for (c = Client_First(); c!= NULL; c = Client_Next(c)) {
723 if (Client_Type(c) != CLIENT_SERVICE)
725 if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0],
728 if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG,
729 Client_ID(Client), Client_Mask(c),
730 Client_Mask(Client_Introducer(c)), "*",
731 0, Client_Hops(c), Client_Info(c)))
736 return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client),
737 Req->argc > 0 ? Req->argv[0] : "*",
738 Req->argc > 1 ? Req->argv[1] : "0");
742 * Handler for the IRC command "MOTD".
744 * @param Client The client from which this command has been received.
745 * @param Req Request structure with prefix and all parameters.
746 * @return CONNECTED or DISCONNECTED.
749 IRC_MOTD( CLIENT *Client, REQUEST *Req )
751 CLIENT *from, *target;
753 assert( Client != NULL );
754 assert( Req != NULL );
756 IRC_SetPenalty(Client, 3);
758 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
759 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, from)
762 if (target != Client_ThisServer()) {
763 IRC_WriteStrClientPrefix(target, from, "MOTD %s",
768 return IRC_Show_MOTD(from);
772 * Handler for the IRC command "NAMES".
774 * @param Client The client from which this command has been received.
775 * @param Req Request structure with prefix and all parameters.
776 * @return CONNECTED or DISCONNECTED.
779 IRC_NAMES( CLIENT *Client, REQUEST *Req )
781 char rpl[COMMAND_LEN], *ptr;
782 CLIENT *target, *from, *c;
785 assert( Client != NULL );
786 assert( Req != NULL );
788 IRC_SetPenalty(Client, 1);
790 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
791 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 1, from)
794 if (target != Client_ThisServer()) {
795 IRC_WriteStrClientPrefix(target, from, "NAMES %s :%s",
796 Req->argv[0], Client_ID(target));
801 /* Return NAMES list for specific channels */
802 ptr = strtok(Req->argv[0], ",");
804 chan = Channel_Search(ptr);
805 if (chan && !IRC_Send_NAMES(from, chan))
807 if (!IRC_WriteStrClient(from, RPL_ENDOFNAMES_MSG,
808 Client_ID(from), ptr))
810 ptr = strtok( NULL, "," );
815 chan = Channel_First();
817 if (!IRC_Send_NAMES(from, chan))
819 chan = Channel_Next(chan);
822 /* Now print all clients which are not in any channel */
824 snprintf(rpl, sizeof(rpl), RPL_NAMREPLY_MSG, Client_ID(from), "*", "*");
826 if (Client_Type(c) == CLIENT_USER
827 && Channel_FirstChannelOf(c) == NULL
828 && !Client_HasMode(c, 'i'))
830 /* its a user, concatenate ... */
831 if (rpl[strlen(rpl) - 1] != ':')
832 strlcat(rpl, " ", sizeof(rpl));
833 strlcat(rpl, Client_ID(c), sizeof(rpl));
835 if (strlen(rpl) > COMMAND_LEN - CLIENT_NICK_LEN - 4) {
836 /* Line is gwoing too long, send now */
837 if (!IRC_WriteStrClient(from, "%s", rpl))
839 snprintf(rpl, sizeof(rpl), RPL_NAMREPLY_MSG,
840 Client_ID(from), "*", "*");
845 if (rpl[strlen(rpl) - 1] != ':' && !IRC_WriteStrClient(from, "%s", rpl))
848 return IRC_WriteStrClient(from, RPL_ENDOFNAMES_MSG, Client_ID(from), "*");
852 * Handler for the IRC command "STATS".
854 * @param Client The client from which this command has been received.
855 * @param Req Request structure with prefix and all parameters.
856 * @return CONNECTED or DISCONNECTED.
859 IRC_STATS( CLIENT *Client, REQUEST *Req )
861 CLIENT *from, *target, *cl;
866 unsigned int days, hrs, mins;
867 struct list_head *list;
868 struct list_elem *list_item;
869 bool more_links = false;
871 assert(Client != NULL);
874 IRC_SetPenalty(Client, 2);
876 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
877 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 1, from)
880 if (target != Client_ThisServer()) {
881 IRC_WriteStrClientPrefix(target, from, "STATS %s %s",
882 Req->argv[0], Client_ID(target));
887 query = Req->argv[0][0] ? Req->argv[0][0] : '*';
892 case 'g': /* Network-wide bans ("G-Lines") */
894 case 'k': /* Server-local bans ("K-Lines") */
896 if (!Client_HasMode(from, 'o'))
897 return IRC_WriteErrClient(from, ERR_NOPRIVILEGES_MSG,
899 if (query == 'g' || query == 'G')
900 list = Class_GetList(CLASS_GLINE);
902 list = Class_GetList(CLASS_KLINE);
903 list_item = Lists_GetFirst(list);
905 if (!IRC_WriteStrClient(from, RPL_STATSXLINE_MSG,
906 Client_ID(from), query,
907 Lists_GetMask(list_item),
908 Lists_GetValidity(list_item),
909 Lists_GetReason(list_item)))
911 list_item = Lists_GetNext(list_item);
914 case 'L': /* Link status (servers and user links) */
915 if (!Op_Check(from, Req))
916 return Op_NoPrivileges(from, Req);
919 case 'l': /* Link status (servers and own link) */
920 time_now = time(NULL);
921 for (con = Conn_First(); con != NONE; con = Conn_Next(con)) {
922 cl = Conn_GetClient(con);
925 if (Client_Type(cl) == CLIENT_SERVER ||
927 (more_links && Client_Type(cl) == CLIENT_USER)) {
929 if (Conn_Options(con) & CONN_ZIP) {
930 if (!IRC_WriteStrClient
931 (from, RPL_STATSLINKINFOZIP_MSG,
932 Client_ID(from), Client_Mask(cl),
933 Conn_SendQ(con), Conn_SendMsg(con),
939 (long)(time_now - Conn_StartTime(con))))
944 if (!IRC_WriteStrClient
945 (from, RPL_STATSLINKINFO_MSG,
946 Client_ID(from), Client_Mask(cl),
947 Conn_SendQ(con), Conn_SendMsg(con),
948 Conn_SendBytes(con), Conn_RecvMsg(con),
950 (long)(time_now - Conn_StartTime(con))))
955 case 'm': /* IRC command status (usage count) */
957 cmd = Parse_GetCommandStruct();
958 for (; cmd->name; cmd++) {
959 if (cmd->lcount == 0 && cmd->rcount == 0)
961 if (!IRC_WriteStrClient
962 (from, RPL_STATSCOMMANDS_MSG, Client_ID(from),
963 cmd->name, cmd->lcount, cmd->bytes, cmd->rcount))
967 case 'u': /* Server uptime */
969 time_now = time(NULL) - NGIRCd_Start;
970 days = uptime_days(&time_now);
971 hrs = uptime_hrs(&time_now);
972 mins = uptime_mins(&time_now);
973 if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from),
974 days, hrs, mins, (unsigned int)time_now))
979 return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG,
980 Client_ID(from), query);
984 * Handler for the IRC command "SUMMON".
986 * @param Client The client from which this command has been received.
987 * @param Req Request structure with prefix and all parameters.
988 * @return CONNECTED or DISCONNECTED.
991 IRC_SUMMON(CLIENT * Client, UNUSED REQUEST * Req)
993 assert(Client != NULL);
995 return IRC_WriteErrClient(Client, ERR_SUMMONDISABLED_MSG,
1000 * Handler for the IRC command "TIME".
1002 * @param Client The client from which this command has been received.
1003 * @param Req Request structure with prefix and all parameters.
1004 * @return CONNECTED or DISCONNECTED.
1007 IRC_TIME( CLIENT *Client, REQUEST *Req )
1009 CLIENT *from, *target;
1013 assert(Client != NULL);
1014 assert(Req != NULL);
1016 IRC_SetPenalty(Client, 1);
1018 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
1019 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, from)
1022 if (target != Client_ThisServer()) {
1023 IRC_WriteStrClientPrefix(target, from, "TIME %s",
1029 (void)strftime(t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime(&t));
1030 return IRC_WriteStrClient(from, RPL_TIME_MSG, Client_ID(from),
1031 Client_ID(Client_ThisServer()), t_str);
1035 * Handler for the IRC command "USERHOST".
1037 * @param Client The client from which this command has been received.
1038 * @param Req Request structure with prefix and all parameters.
1039 * @return CONNECTED or DISCONNECTED.
1042 IRC_USERHOST(CLIENT *Client, REQUEST *Req)
1044 char rpl[COMMAND_LEN];
1048 assert(Client != NULL);
1049 assert(Req != NULL);
1051 IRC_SetPenalty(Client, 1);
1058 strlcpy(rpl, RPL_USERHOST_MSG, sizeof rpl);
1059 for (i = 0; i < max; i++) {
1060 c = Client_Search(Req->argv[i]);
1061 if (c && (Client_Type(c) == CLIENT_USER)) {
1062 /* This Nick is "online" */
1063 strlcat(rpl, Client_ID(c), sizeof(rpl));
1064 if (Client_HasMode(c, 'o'))
1065 strlcat(rpl, "*", sizeof(rpl));
1066 strlcat(rpl, "=", sizeof(rpl));
1067 if (Client_HasMode(c, 'a'))
1068 strlcat(rpl, "-", sizeof(rpl));
1070 strlcat(rpl, "+", sizeof(rpl));
1071 strlcat(rpl, Client_User(c), sizeof(rpl));
1072 strlcat(rpl, "@", sizeof(rpl));
1073 strlcat(rpl, Client_HostnameDisplayed(c), sizeof(rpl));
1074 strlcat(rpl, " ", sizeof(rpl));
1077 ngt_TrimLastChr(rpl, ' ');
1079 return IRC_WriteStrClient(Client, rpl, Client_ID(Client));
1080 } /* IRC_USERHOST */
1083 * Handler for the IRC command "USERS".
1085 * @param Client The client from which this command has been received.
1086 * @param Req Request structure with prefix and all parameters.
1087 * @return CONNECTED or DISCONNECTED.
1090 IRC_USERS(CLIENT * Client, UNUSED REQUEST * Req)
1092 assert(Client != NULL);
1094 return IRC_WriteErrClient(Client, ERR_USERSDISABLED_MSG,
1099 * Handler for the IRC command "VERSION".
1101 * @param Client The client from which this command has been received.
1102 * @param Req Request structure with prefix and all parameters.
1103 * @return CONNECTED or DISCONNECTED.
1106 IRC_VERSION( CLIENT *Client, REQUEST *Req )
1108 CLIENT *target, *prefix;
1110 assert( Client != NULL );
1111 assert( Req != NULL );
1113 IRC_SetPenalty(Client, 1);
1115 _IRC_GET_SENDER_OR_RETURN_(prefix, Req, Client)
1116 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, prefix)
1119 if (target != Client_ThisServer()) {
1120 IRC_WriteStrClientPrefix(target, prefix, "VERSION %s",
1125 /* send version information */
1126 return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix),
1127 PACKAGE_NAME, PACKAGE_VERSION,
1128 NGIRCd_DebugLevel, Conf_ServerName,
1129 NGIRCd_VersionAddition);
1133 * Handler for the IRC "WHO" command.
1135 * @param Client The client from which this command has been received.
1136 * @param Req Request structure with prefix and all parameters.
1137 * @return CONNECTED or DISCONNECTED.
1140 IRC_WHO(CLIENT *Client, REQUEST *Req)
1145 assert (Client != NULL);
1146 assert (Req != NULL);
1148 IRC_SetPenalty(Client, 1);
1151 if (Req->argc == 2) {
1152 if (strcmp(Req->argv[1], "o") == 0)
1156 IRC_SetPenalty(Client, 2);
1157 return IRC_WriteErrClient(Client,
1158 ERR_NEEDMOREPARAMS_MSG,
1165 if (Req->argc >= 1) {
1166 /* Channel or mask given */
1167 chan = Channel_Search(Req->argv[0]);
1169 /* Members of a channel have been requested */
1170 return IRC_WHO_Channel(Client, chan, only_ops);
1172 if (strcmp(Req->argv[0], "0") != 0) {
1173 /* A mask has been given. But please note this RFC
1174 * stupidity: "0" is same as no arguments ... */
1175 return IRC_WHO_Mask(Client, Req->argv[0], only_ops);
1179 /* No channel or (valid) mask given */
1180 IRC_SetPenalty(Client, 2);
1181 return IRC_WHO_Mask(Client, NULL, only_ops);
1185 * Handler for the IRC "WHOIS" command.
1187 * @param Client The client from which this command has been received.
1188 * @param Req Request structure with prefix and all parameters.
1189 * @return CONNECTED or DISCONNECTED.
1192 IRC_WHOIS( CLIENT *Client, REQUEST *Req )
1194 CLIENT *from, *target, *c;
1195 unsigned int match_count = 0, found = 0;
1196 bool has_wildcards, is_remote;
1197 bool got_wildcard = false;
1198 char mask[COMMAND_LEN], *query;
1200 assert( Client != NULL );
1201 assert( Req != NULL );
1203 IRC_SetPenalty(Client, 1);
1205 /* Wrong number of parameters? */
1207 return IRC_WriteErrClient(Client, ERR_NONICKNAMEGIVEN_MSG,
1210 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 2)
1211 _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
1213 /* Get target server for this command */
1214 if (Req->argc > 1) {
1215 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, Client)
1217 target = Client_ThisServer();
1219 assert(target != NULL);
1222 if (target != Client_ThisServer()) {
1223 IRC_WriteStrClientPrefix(target, from, "WHOIS %s :%s",
1224 Req->argv[0], Req->argv[1]);
1228 is_remote = Client_Conn(from) < 0;
1229 strlcpy(mask, Req->argv[Req->argc - 1], sizeof(mask));
1230 for (query = strtok(ngt_LowerStr(mask), ",");
1232 query = strtok(NULL, ","), found++)
1234 has_wildcards = query[strcspn(query, "*?")] != 0;
1236 * follows ircd 2.10 implementation:
1237 * - handle up to 3 targets
1238 * - no wildcards for remote clients
1239 * - only one wildcard target per local client
1241 * Also, at most MAX_RPL_WHOIS matches are returned.
1243 if (!has_wildcards || is_remote) {
1244 c = Client_Search(query);
1245 if (c && (Client_Type(c) == CLIENT_USER
1246 || Client_Type(c) == CLIENT_SERVICE)) {
1247 if (!IRC_WHOIS_SendReply(Client, from, c))
1248 return DISCONNECTED;
1250 if (!IRC_WriteErrClient(Client,
1254 return DISCONNECTED;
1259 /* we already handled one wildcard query */
1260 if (!IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
1261 Client_ID(Client), query))
1262 return DISCONNECTED;
1265 got_wildcard = true;
1266 IRC_SetPenalty(Client, 3);
1268 for (c = Client_First(); c; c = Client_Next(c)) {
1269 if (IRC_CheckListTooBig(Client, match_count,
1270 MAX_RPL_WHOIS, "WHOIS"))
1273 if (Client_Type(c) != CLIENT_USER)
1275 if (!MatchCaseInsensitive(query, Client_ID(c)))
1277 if (!IRC_WHOIS_SendReply(Client, from, c))
1278 return DISCONNECTED;
1283 if (match_count == 0)
1284 IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
1286 Req->argv[Req->argc - 1]);
1288 return IRC_WriteStrClient(from, RPL_ENDOFWHOIS_MSG,
1289 Client_ID(from), Req->argv[Req->argc - 1]);
1293 * Handler for the IRC "WHOWAS" command.
1295 * @param Client The client from which this command has been received.
1296 * @param Req Request structure with prefix and all parameters.
1297 * @return CONNECTED or DISCONNECTED.
1300 IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
1302 CLIENT *target, *prefix;
1304 char tok_buf[COMMAND_LEN];
1305 int max, last, count, i, nc;
1308 assert( Client != NULL );
1309 assert( Req != NULL );
1311 /* Wrong number of parameters? */
1313 return IRC_WriteErrClient(Client, ERR_NONICKNAMEGIVEN_MSG,
1316 _IRC_ARGC_LE_OR_RETURN_(Client, Req, 3)
1317 _IRC_GET_SENDER_OR_RETURN_(prefix, Req, Client)
1318 _IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 2, prefix)
1320 /* Do not reveal any info on disconnected users? */
1321 if (Conf_MorePrivacy)
1325 if (target != Client_ThisServer()) {
1326 IRC_WriteStrClientPrefix(target, prefix, "WHOWAS %s %s %s",
1327 Req->argv[0], Req->argv[1],
1332 whowas = Client_GetWhowas( );
1333 last = Client_GetLastWhowasIndex( );
1337 max = DEF_RPL_WHOWAS;
1338 if (Req->argc > 1) {
1339 max = atoi(Req->argv[1]);
1341 max = MAX_RPL_WHOWAS;
1345 * Break up the nick argument into a list of nicks, if applicable
1346 * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG.
1348 strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf));
1349 nick = strtok(tok_buf, ",");
1351 for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) {
1355 if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) {
1356 if (!WHOWAS_EntryWrite(prefix, &whowas[i]))
1357 return DISCONNECTED;
1361 /* previous entry */
1364 /* "underflow", wrap around */
1368 if (nc && count >= max)
1370 } while (i != last);
1372 if (nc == 0 && !IRC_WriteErrClient(prefix, ERR_WASNOSUCHNICK_MSG,
1373 Client_ID(prefix), nick))
1374 return DISCONNECTED;
1376 return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG,
1377 Client_ID(prefix), Req->argv[0]);
1381 * Send LUSERS reply to a client.
1383 * @param Client The receipient of the information.
1384 * @return CONNECTED or DISCONNECTED.
1387 IRC_Send_LUSERS(CLIENT *Client)
1394 assert(Client != NULL);
1396 /* Users, services and servers in the network */
1397 if (!IRC_WriteStrClient(Client, RPL_LUSERCLIENT_MSG, Client_ID(Client),
1398 Client_UserCount(), Client_ServiceCount(),
1399 Client_ServerCount()))
1400 return DISCONNECTED;
1402 /* Number of IRC operators */
1403 cnt = Client_OperCount( );
1405 if (!IRC_WriteStrClient(Client, RPL_LUSEROP_MSG,
1406 Client_ID(Client), cnt))
1407 return DISCONNECTED;
1410 /* Unknown connections */
1411 cnt = Client_UnknownCount( );
1413 if (!IRC_WriteStrClient(Client, RPL_LUSERUNKNOWN_MSG,
1414 Client_ID(Client), cnt))
1415 return DISCONNECTED;
1418 /* Number of created channels */
1419 if (!IRC_WriteStrClient(Client, RPL_LUSERCHANNELS_MSG,
1421 Channel_CountVisible(Client)))
1422 return DISCONNECTED;
1424 /* Number of local users, services and servers */
1425 if (!IRC_WriteStrClient(Client, RPL_LUSERME_MSG, Client_ID(Client),
1426 Client_MyUserCount(), Client_MyServiceCount(),
1427 Client_MyServerCount()))
1428 return DISCONNECTED;
1431 /* Maximum number of local users */
1432 cnt = Client_MyUserCount();
1433 max = Client_MyMaxUserCount();
1434 if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client),
1435 cnt, max, cnt, max))
1436 return DISCONNECTED;
1437 /* Maximum number of users in the network */
1438 cnt = Client_UserCount();
1439 max = Client_MaxUserCount();
1440 if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client),
1441 cnt, max, cnt, max))
1442 return DISCONNECTED;
1443 /* Connection counters */
1444 if (! IRC_WriteStrClient(Client, RPL_STATSCONN_MSG, Client_ID(Client),
1445 Conn_CountMax(), Conn_CountAccepted()))
1446 return DISCONNECTED;
1450 } /* IRC_Send_LUSERS */
1453 IRC_Show_MOTD( CLIENT *Client )
1456 size_t len_tot, len_str;
1458 assert( Client != NULL );
1460 len_tot = array_bytes(&Conf_Motd);
1461 if (len_tot == 0 && !Conn_UsesSSL(Client_Conn(Client)))
1462 return IRC_WriteErrClient(Client, ERR_NOMOTD_MSG, Client_ID(Client));
1464 if (!IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG, Client_ID(Client),
1465 Client_ID(Client_ThisServer())))
1466 return DISCONNECTED;
1468 line = array_start(&Conf_Motd);
1469 while (len_tot > 0) {
1470 len_str = strlen(line) + 1;
1472 assert(len_tot >= len_str);
1475 if (!IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID(Client), line))
1476 return DISCONNECTED;
1480 if (!Show_MOTD_SSLInfo(Client))
1481 return DISCONNECTED;
1483 if (!IRC_WriteStrClient(Client, RPL_ENDOFMOTD_MSG, Client_ID(Client)))
1484 return DISCONNECTED;
1486 if (*Conf_CloakHost)
1487 return IRC_WriteStrClient(Client, RPL_HOSTHIDDEN_MSG,
1489 Client_Hostname(Client));
1492 } /* IRC_Show_MOTD */
1495 * Send NAMES reply for a specific client and channel.
1497 * @param Client The client requesting the NAMES information.
1498 * @param Chan The channel
1499 * @return CONNECTED or DISCONNECTED.
1502 IRC_Send_NAMES(CLIENT * Client, CHANNEL * Chan)
1504 bool is_visible, is_member;
1505 char str[COMMAND_LEN];
1509 assert(Client != NULL);
1510 assert(Chan != NULL);
1512 if (Channel_IsMemberOf(Chan, Client))
1517 /* Do not print info on channel memberships to anyone that is not member? */
1518 if (Conf_MorePrivacy && !is_member)
1521 /* Secret channel? */
1522 if (!is_member && Channel_HasMode(Chan, 's'))
1525 snprintf(str, sizeof(str), RPL_NAMREPLY_MSG, Client_ID(Client), "=",
1526 Channel_Name(Chan));
1527 cl2chan = Channel_FirstMember(Chan);
1529 cl = Channel_GetClient(cl2chan);
1531 if (Client_HasMode(cl, 'i'))
1536 if (is_member || is_visible) {
1537 if (str[strlen(str) - 1] != ':')
1538 strlcat(str, " ", sizeof(str));
1540 who_flags_qualifier(Client, Channel_UserModes(Chan, cl),
1542 strlcat(str, Client_ID(cl), sizeof(str));
1544 if (strlen(str) > (COMMAND_LEN - CLIENT_NICK_LEN - 4)) {
1545 if (!IRC_WriteStrClient(Client, "%s", str))
1546 return DISCONNECTED;
1547 snprintf(str, sizeof(str), RPL_NAMREPLY_MSG,
1548 Client_ID(Client), "=",
1549 Channel_Name(Chan));
1553 cl2chan = Channel_NextMember(Chan, cl2chan);
1555 if (str[strlen(str) - 1] != ':') {
1556 if (!IRC_WriteStrClient(Client, "%s", str))
1557 return DISCONNECTED;
1561 } /* IRC_Send_NAMES */
1564 * Send the ISUPPORT numeric (005).
1565 * This numeric indicates the features that are supported by this server.
1566 * See <http://www.irc.org/tech_docs/005.html> for details.
1569 IRC_Send_ISUPPORT(CLIENT * Client)
1571 if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client),
1572 CHANTYPES, CHANTYPES, Conf_MaxJoins))
1573 return DISCONNECTED;
1574 return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
1575 CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
1576 COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
1577 COMMAND_LEN - 113, MAX_HNDL_MODES_ARG,
1578 MAX_HNDL_CHANNEL_LISTS);
1579 } /* IRC_Send_ISUPPORT */