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.
16 * IRC commands for mode changes (like MODE, AWAY, etc.)
28 #include "irc-write.h"
39 static bool Client_Mode PARAMS((CLIENT *Client, REQUEST *Req, CLIENT *Origin,
41 static bool Channel_Mode PARAMS((CLIENT *Client, REQUEST *Req, CLIENT *Origin,
44 static bool Add_To_List PARAMS((char what, CLIENT *Prefix, CLIENT *Client,
45 CHANNEL *Channel, const char *Pattern));
46 static bool Del_From_List PARAMS((char what, CLIENT *Prefix, CLIENT *Client,
47 CHANNEL *Channel, const char *Pattern));
49 static bool Send_ListChange PARAMS((const bool IsAdd, const char ModeChar,
50 CLIENT *Prefix, CLIENT *Client,
51 CHANNEL *Channel, const char *Mask));
55 * Handler for the IRC "MODE" command.
57 * See RFC 2812 section 3.1.5 ("user mode message") and section 3.2.3
58 * ("channel mode message"), and RFC 2811 section 4 ("channel modes").
60 * @param Client The client from which this command has been received.
61 * @param Req Request structure with prefix and all parameters.
62 * @returns CONNECTED or DISCONNECTED.
65 IRC_MODE( CLIENT *Client, REQUEST *Req )
70 assert(Client != NULL);
75 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
76 Client_ID(Client), Req->command);
78 /* Origin for answers */
79 if (Client_Type(Client) == CLIENT_SERVER) {
80 origin = Client_Search(Req->prefix);
82 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
88 /* Channel or user mode? */
89 cl = NULL; chan = NULL;
90 if (Client_IsValidNick(Req->argv[0]))
91 cl = Client_Search(Req->argv[0]);
92 if (Channel_IsValidName(Req->argv[0]))
93 chan = Channel_Search(Req->argv[0]);
96 return Client_Mode(Client, Req, origin, cl);
98 return Channel_Mode(Client, Req, origin, chan);
100 /* No target found! */
101 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
102 Client_ID(Client), Req->argv[0]);
107 * Check if the "mode limit" for a client has been reached.
109 * This limit doesn't apply for servers or services!
111 * @param Client The client to check.
112 * @param Count The number of modes already handled.
113 * @return true if the limit has been reached.
116 Mode_Limit_Reached(CLIENT *Client, int Count)
118 if (Client_Type(Client) == CLIENT_SERVER
119 || Client_Type(Client) == CLIENT_SERVICE)
121 if (Count < MAX_HNDL_MODES_ARG)
128 * Handle client mode requests
130 * @param Client The client from which this command has been received.
131 * @param Req Request structure with prefix and all parameters.
132 * @param Origin The originator of the MODE command (prefix).
133 * @param Target The target (client) of this MODE command.
134 * @returns CONNECTED or DISCONNECTED.
137 Client_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target )
139 char the_modes[COMMAND_LEN], x[2], *mode_ptr;
141 bool send_RPL_HOSTHIDDEN_MSG = false;
145 /* Is the client allowed to request or change the modes? */
146 if (Client_Type(Client) == CLIENT_USER) {
147 /* Users are only allowed to manipulate their own modes! */
148 if (Target != Client)
149 return IRC_WriteStrClient(Client,
150 ERR_USERSDONTMATCH_MSG,
154 /* Mode request: let's answer it :-) */
156 return IRC_WriteStrClient(Origin, RPL_UMODEIS_MSG,
158 Client_Modes(Target));
161 mode_ptr = Req->argv[mode_arg];
163 /* Initial state: set or unset modes? */
164 if (*mode_ptr == '+') {
166 strcpy(the_modes, "+");
167 } else if (*mode_ptr == '-') {
169 strcpy(the_modes, "-");
171 return IRC_WriteStrClient(Origin, ERR_UMODEUNKNOWNFLAG_MSG,
179 /* Try next argument if there's any */
181 if (mode_arg < Req->argc)
182 mode_ptr = Req->argv[mode_arg];
190 if ((*mode_ptr == '+' && !set)
191 || (*mode_ptr == '-' && set)) {
192 /* Action modifier ("+"/"-") must be changed */
193 len = strlen(the_modes) - 1;
194 if (the_modes[len] == '+'
195 || the_modes[len] == '-') {
196 /* Last character in the "result
197 * string" was an "action", so just
198 * overwrite it with the new action */
199 the_modes[len] = *mode_ptr;
201 /* Append new modifier character to
202 * the resulting mode string */
204 strlcat(the_modes, x,
207 if (*mode_ptr == '+')
218 case 'b': /* Block private msgs */
219 case 'C': /* Only messages from clients sharing a channel */
220 case 'i': /* Invisible */
221 case 's': /* Server messages */
222 case 'w': /* Wallops messages */
226 if (Client_Type(Client) == CLIENT_SERVER) {
228 Client_SetAway(Origin, DEFAULT_AWAY_MSG);
230 ok = IRC_WriteStrClient(Origin,
231 ERR_NOPRIVILEGES_MSG,
235 if (Client_HasMode(Client, 'r'))
236 ok = IRC_WriteStrClient(Origin,
242 case 'c': /* Receive connect notices
243 * (only settable by IRC operators!) */
244 if (!set || Client_Type(Client) == CLIENT_SERVER
245 || Client_OperByMe(Origin))
248 ok = IRC_WriteStrClient(Origin,
249 ERR_NOPRIVILEGES_MSG,
252 case 'o': /* IRC operator (only unsettable!) */
253 if (!set || Client_Type(Client) == CLIENT_SERVER) {
254 Client_SetOperByMe(Target, false);
257 ok = IRC_WriteStrClient(Origin,
258 ERR_NOPRIVILEGES_MSG,
261 case 'q': /* KICK-protected user */
262 if (!set || Client_Type(Client) == CLIENT_SERVER
263 || Client_OperByMe(Origin))
266 ok = IRC_WriteStrClient(Origin,
267 ERR_NOPRIVILEGES_MSG,
270 case 'r': /* Restricted (only settable) */
271 if (set || Client_Type(Client) == CLIENT_SERVER)
274 ok = IRC_WriteStrClient(Origin,
278 case 'R': /* Registered (not [un]settable by clients) */
279 if (Client_Type(Client) == CLIENT_SERVER)
282 ok = IRC_WriteStrClient(Origin,
283 ERR_NICKREGISTER_MSG,
286 case 'x': /* Cloak hostname */
287 if (Client_HasMode(Client, 'r'))
288 ok = IRC_WriteStrClient(Origin,
291 else if (!set || Conf_CloakHostModeX[0]
292 || Client_Type(Client) == CLIENT_SERVER
293 || Client_OperByMe(Client)) {
295 send_RPL_HOSTHIDDEN_MSG = true;
297 ok = IRC_WriteStrClient(Origin,
298 ERR_NOPRIVILEGES_MSG,
302 if (Client_Type(Client) != CLIENT_SERVER) {
304 "Unknown mode \"%c%c\" from \"%s\"!?",
305 set ? '+' : '-', *mode_ptr,
307 ok = IRC_WriteStrClient(Origin,
308 ERR_UMODEUNKNOWNFLAG2_MSG,
315 "Handling unknown mode \"%c%c\" from \"%s\" for \"%s\" ...",
316 set ? '+' : '-', *mode_ptr,
317 Client_ID(Origin), Client_ID(Target));
325 /* Is there a valid mode change? */
330 if (Client_ModeAdd(Target, x[0]))
331 strlcat(the_modes, x, sizeof(the_modes));
333 if (Client_ModeDel(Target, x[0]))
334 strlcat(the_modes, x, sizeof(the_modes));
338 /* Are there changed modes? */
340 /* Remove needless action modifier characters */
341 len = strlen(the_modes) - 1;
342 if (the_modes[len] == '+' || the_modes[len] == '-')
343 the_modes[len] = '\0';
345 if (Client_Type(Client) == CLIENT_SERVER) {
346 /* Forward modes to other servers */
347 if (Client_Conn(Target) != NONE) {
348 /* Remote server (service?) changed modes
349 * for one of our clients. Inform it! */
350 IRC_WriteStrClientPrefix(Target, Origin,
355 IRC_WriteStrServersPrefix(Client, Origin,
360 /* Send reply to client and inform other servers */
361 ok = IRC_WriteStrClientPrefix(Client, Origin,
365 IRC_WriteStrServersPrefix(Client, Origin,
369 if (send_RPL_HOSTHIDDEN_MSG)
370 IRC_WriteStrClient(Client, RPL_HOSTHIDDEN_MSG,
372 Client_HostnameCloaked(Client));
374 LogDebug("%s \"%s\": Mode change, now \"%s\".",
375 Client_TypeText(Target), Client_Mask(Target),
376 Client_Modes(Target));
379 IRC_SetPenalty(Client, 1);
385 Channel_Mode_Answer_Request(CLIENT *Origin, CHANNEL *Channel)
387 char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], argadd[CLIENT_PASS_LEN];
388 const char *mode_ptr;
390 /* Member or not? -- That's the question! */
391 if (!Channel_IsMemberOf(Channel, Origin))
392 return IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
393 Client_ID(Origin), Channel_Name(Channel), Channel_Modes(Channel));
395 /* The sender is a member: generate extended reply */
396 strlcpy(the_modes, Channel_Modes(Channel), sizeof(the_modes));
397 mode_ptr = the_modes;
403 snprintf(argadd, sizeof(argadd), " %lu", Channel_MaxUsers(Channel));
404 strlcat(the_args, argadd, sizeof(the_args));
407 strlcat(the_args, " ", sizeof(the_args));
408 strlcat(the_args, Channel_Key(Channel), sizeof(the_args));
414 strlcat(the_modes, the_args, sizeof(the_modes));
416 if (!IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
417 Client_ID(Origin), Channel_Name(Channel),
421 if (!IRC_WriteStrClient(Origin, RPL_CREATIONTIME_MSG,
422 Client_ID(Origin), Channel_Name(Channel),
423 Channel_CreationTime(Channel)))
431 * Handle channel mode and channel-user mode changes
434 Channel_Mode(CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel)
436 char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2],
437 argadd[CLIENT_PASS_LEN], *mode_ptr, *o_mode_ptr;
438 bool connected, set, skiponce, retval, use_servermode,
439 is_halfop, is_op, is_admin, is_owner, is_machine, is_oper;
440 int mode_arg, arg_arg, mode_arg_count = 0;
445 is_halfop = is_op = is_admin = is_owner = is_machine = is_oper = false;
447 if (Channel_IsModeless(Channel))
448 return IRC_WriteStrClient(Client, ERR_NOCHANMODES_MSG,
449 Client_ID(Client), Channel_Name(Channel));
451 /* Mode request: let's answer it :-) */
453 return Channel_Mode_Answer_Request(Origin, Channel);
455 /* Check if origin is oper and opers can use mode */
456 use_servermode = Conf_OperServerMode;
457 if(Client_OperByMe(Client) && Conf_OperCanMode) {
461 /* Check if client is a server/service */
462 if(Client_Type(Client) == CLIENT_SERVER ||
463 Client_Type(Client) == CLIENT_SERVICE) {
467 /* Check if client is member of channel or an oper or an server/service */
468 if(!Channel_IsMemberOf(Channel, Client) && !is_oper && !is_machine)
469 return IRC_WriteStrClient(Origin, ERR_NOTONCHANNEL_MSG,
471 Channel_Name(Channel));
474 mode_ptr = Req->argv[mode_arg];
475 if (Req->argc > mode_arg + 1)
476 arg_arg = mode_arg + 1;
480 /* Initial state: set or unset modes? */
494 /* Prepare reply string */
495 strcpy(the_modes, set ? "+" : "-");
499 connected = CONNECTED;
504 /* Try next argument if there's any */
507 if (arg_arg > mode_arg)
512 if (mode_arg >= Req->argc)
514 mode_ptr = Req->argv[mode_arg];
516 if (Req->argc > mode_arg + 1)
517 arg_arg = mode_arg + 1;
526 if (((*mode_ptr == '+') && !set)
527 || ((*mode_ptr == '-') && set)) {
528 /* Action modifier ("+"/"-") must be changed ... */
529 len = strlen(the_modes) - 1;
530 if (the_modes[len] == '+' || the_modes[len] == '-') {
531 /* Adjust last action modifier in result */
532 the_modes[len] = *mode_ptr;
534 /* Append modifier character to result string */
536 strlcat(the_modes, x, sizeof(the_modes));
538 set = *mode_ptr == '+';
543 /* Are there arguments left? */
544 if (arg_arg >= Req->argc)
548 o_mode_ptr = Channel_UserModes(Channel, Client);
549 while( *o_mode_ptr ) {
550 if ( *o_mode_ptr == 'q')
552 if ( *o_mode_ptr == 'a')
554 if ( *o_mode_ptr == 'o')
556 if ( *o_mode_ptr == 'h')
567 /* --- Channel modes --- */
568 case 'R': /* Registered users only */
569 case 's': /* Secret channel */
570 case 'z': /* Secure connections only */
571 if(!is_oper && !is_machine && !is_owner &&
572 !is_admin && !is_op) {
573 connected = IRC_WriteStrClient(Origin,
574 ERR_CHANOPRIVSNEEDED_MSG,
575 Client_ID(Origin), Channel_Name(Channel));
578 case 'i': /* Invite only */
579 case 'V': /* Invite disallow */
580 case 'M': /* Only identified nicks can write */
581 case 'm': /* Moderated */
582 case 'n': /* Only members can write */
583 case 'Q': /* No kicks */
584 case 't': /* Topic locked */
585 if(is_oper || is_machine || is_owner ||
586 is_admin || is_op || is_halfop)
589 connected = IRC_WriteStrClient(Origin,
590 ERR_CHANOPRIVSNEEDED_MSG,
591 Client_ID(Origin), Channel_Name(Channel));
593 case 'k': /* Channel key */
594 if (Mode_Limit_Reached(Client, mode_arg_count++))
597 if (is_oper || is_machine || is_owner ||
598 is_admin || is_op || is_halfop)
601 connected = IRC_WriteStrClient(Origin,
602 ERR_CHANOPRIVSNEEDED_MSG,
604 Channel_Name(Channel));
607 if (arg_arg > mode_arg) {
608 if (is_oper || is_machine || is_owner ||
609 is_admin || is_op || is_halfop) {
610 Channel_ModeDel(Channel, 'k');
611 Channel_SetKey(Channel,
613 strlcpy(argadd, Channel_Key(Channel),
617 connected = IRC_WriteStrClient(Origin,
618 ERR_CHANOPRIVSNEEDED_MSG,
620 Channel_Name(Channel));
622 Req->argv[arg_arg][0] = '\0';
625 connected = IRC_WriteStrClient(Origin,
626 ERR_NEEDMOREPARAMS_MSG,
627 Client_ID(Origin), Req->command);
631 case 'l': /* Member limit */
632 if (Mode_Limit_Reached(Client, mode_arg_count++))
635 if (is_oper || is_machine || is_owner ||
636 is_admin || is_op || is_halfop)
639 connected = IRC_WriteStrClient(Origin,
640 ERR_CHANOPRIVSNEEDED_MSG,
642 Channel_Name(Channel));
645 if (arg_arg > mode_arg) {
646 if (is_oper || is_machine || is_owner ||
647 is_admin || is_op || is_halfop) {
648 l = atol(Req->argv[arg_arg]);
649 if (l > 0 && l < 0xFFFF) {
650 Channel_ModeDel(Channel, 'l');
651 Channel_SetMaxUsers(Channel, l);
652 snprintf(argadd, sizeof(argadd),
657 connected = IRC_WriteStrClient(Origin,
658 ERR_CHANOPRIVSNEEDED_MSG,
660 Channel_Name(Channel));
662 Req->argv[arg_arg][0] = '\0';
665 connected = IRC_WriteStrClient(Origin,
666 ERR_NEEDMOREPARAMS_MSG,
667 Client_ID(Origin), Req->command);
671 case 'O': /* IRC operators only */
673 /* Only IRC operators are allowed to
674 * set the 'O' channel mode! */
675 if(is_oper || is_machine)
678 connected = IRC_WriteStrClient(Origin,
679 ERR_NOPRIVILEGES_MSG,
681 } else if(is_oper || is_machine || is_owner ||
685 connected = IRC_WriteStrClient(Origin,
686 ERR_CHANOPRIVSNEEDED_MSG,
688 Channel_Name(Channel));
690 case 'P': /* Persistent channel */
692 /* Only IRC operators are allowed to
693 * set the 'P' channel mode! */
694 if(is_oper || is_machine)
697 connected = IRC_WriteStrClient(Origin,
698 ERR_NOPRIVILEGES_MSG,
700 } else if(is_oper || is_machine || is_owner ||
704 connected = IRC_WriteStrClient(Origin,
705 ERR_CHANOPRIVSNEEDED_MSG,
707 Channel_Name(Channel));
709 /* --- Channel user modes --- */
710 case 'q': /* Owner */
711 case 'a': /* Channel admin */
712 if(!is_oper && !is_machine && !is_owner && !is_admin) {
713 connected = IRC_WriteStrClient(Origin,
714 ERR_CHANOPPRIVTOOLOW_MSG,
716 Channel_Name(Channel));
719 case 'o': /* Channel operator */
720 if(!is_oper && !is_machine && !is_owner &&
721 !is_admin && !is_op) {
722 connected = IRC_WriteStrClient(Origin,
723 ERR_CHANOPRIVSNEEDED_MSG,
725 Channel_Name(Channel));
728 case 'h': /* Half Op */
729 if(!is_oper && !is_machine && !is_owner &&
730 !is_admin && !is_op) {
731 connected = IRC_WriteStrClient(Origin,
732 ERR_CHANOPRIVSNEEDED_MSG,
734 Channel_Name(Channel));
737 case 'v': /* Voice */
738 if (arg_arg > mode_arg) {
739 if (is_oper || is_machine || is_owner ||
740 is_admin || is_op || is_halfop) {
741 client = Client_Search(Req->argv[arg_arg]);
745 connected = IRC_WriteStrClient(Origin,
750 connected = IRC_WriteStrClient(Origin,
751 ERR_CHANOPRIVSNEEDED_MSG,
753 Channel_Name(Channel));
755 Req->argv[arg_arg][0] = '\0';
758 connected = IRC_WriteStrClient(Origin,
759 ERR_NEEDMOREPARAMS_MSG,
760 Client_ID(Origin), Req->command);
764 /* --- Channel lists --- */
765 case 'I': /* Invite lists */
766 case 'b': /* Ban lists */
767 case 'e': /* Channel exception lists */
768 if (Mode_Limit_Reached(Client, mode_arg_count++))
770 if (arg_arg > mode_arg) {
772 if (is_oper || is_machine || is_owner ||
773 is_admin || is_op || is_halfop) {
775 ? Add_To_List(*mode_ptr, Origin,
778 : Del_From_List(*mode_ptr, Origin,
782 connected = IRC_WriteStrClient(Origin,
783 ERR_CHANOPRIVSNEEDED_MSG,
785 Channel_Name(Channel));
787 Req->argv[arg_arg][0] = '\0';
792 Channel_ShowInvites(Origin, Channel);
795 Channel_ShowBans(Origin, Channel);
798 Channel_ShowExcepts(Origin, Channel);
804 if (Client_Type(Client) != CLIENT_SERVER) {
806 "Unknown mode \"%c%c\" from \"%s\" on %s!?",
807 set ? '+' : '-', *mode_ptr,
808 Client_ID(Origin), Channel_Name(Channel));
809 connected = IRC_WriteStrClient(Origin,
811 Client_ID(Origin), *mode_ptr,
812 Channel_Name(Channel));
816 "Handling unknown mode \"%c%c\" from \"%s\" on %s ...",
817 set ? '+' : '-', *mode_ptr,
818 Client_ID(Origin), Channel_Name(Channel));
826 /* Is there a valid mode change? */
830 /* Validate target client */
831 if (client && (!Channel_IsMemberOf(Channel, client))) {
832 if (!IRC_WriteStrClient
833 (Origin, ERR_USERNOTINCHANNEL_MSG,
834 Client_ID(Origin), Client_ID(client),
835 Channel_Name(Channel)))
842 /* Channel-User-Mode */
844 ? Channel_UserModeAdd(Channel, client, x[0])
845 : Channel_UserModeDel(Channel, client, x[0]);
847 strlcat(the_args, " ", sizeof(the_args));
848 strlcat(the_args, Client_ID(client),
850 strlcat(the_modes, x, sizeof(the_modes));
852 ("User \"%s\": Mode change on %s, now \"%s\"",
853 Client_Mask(client), Channel_Name(Channel),
854 Channel_UserModes(Channel, client));
859 ? Channel_ModeAdd(Channel, x[0])
860 : Channel_ModeDel(Channel, x[0]);
862 strlcat(the_modes, x, sizeof(the_modes));
863 LogDebug("Channel %s: Mode change, now \"%s\".",
864 Channel_Name(Channel),
865 Channel_Modes(Channel));
869 /* Are there additional arguments to add? */
871 strlcat(the_args, " ", sizeof(the_args));
872 strlcat(the_args, argadd, sizeof(the_args));
877 /* Are there changed modes? */
879 /* Clean up mode string */
880 len = strlen(the_modes) - 1;
881 if ((the_modes[len] == '+') || (the_modes[len] == '-'))
882 the_modes[len] = '\0';
884 if (Client_Type(Client) == CLIENT_SERVER) {
885 /* MODE requests for local channels from other servers
886 * are definitely invalid! */
887 if (Channel_IsLocal(Channel)) {
888 Log(LOG_ALERT, "Got remote MODE command for local channel!? Ignored.");
892 /* Forward mode changes to channel users and all the
893 * other remote servers: */
894 IRC_WriteStrServersPrefix(Client, Origin,
895 "MODE %s %s%s", Channel_Name(Channel),
896 the_modes, the_args);
897 IRC_WriteStrChannelPrefix(Client, Channel, Origin,
898 false, "MODE %s %s%s", Channel_Name(Channel),
899 the_modes, the_args);
902 Origin = Client_ThisServer();
903 /* Send reply to client and inform other servers and channel users */
904 connected = IRC_WriteStrClientPrefix(Client, Origin,
905 "MODE %s %s%s", Channel_Name(Channel),
906 the_modes, the_args);
907 /* Only forward requests for non-local channels */
908 if (!Channel_IsLocal(Channel))
909 IRC_WriteStrServersPrefix(Client, Origin,
910 "MODE %s %s%s", Channel_Name(Channel),
911 the_modes, the_args);
912 IRC_WriteStrChannelPrefix(Client, Channel, Origin,
913 false, "MODE %s %s%s", Channel_Name(Channel),
914 the_modes, the_args);
918 IRC_SetPenalty(Client, 1);
924 IRC_AWAY( CLIENT *Client, REQUEST *Req )
926 assert( Client != NULL );
927 assert( Req != NULL );
929 if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
931 if(( Req->argc == 1 ) && (Req->argv[0][0] ))
933 Client_SetAway( Client, Req->argv[0] );
934 Client_ModeAdd( Client, 'a' );
935 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
936 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
940 Client_ModeDel( Client, 'a' );
941 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
942 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
948 * Add entries to channel invite, ban and exception lists.
950 * @param what Can be 'I' for invite, 'b' for ban, and 'e' for exception list.
951 * @param Prefix The originator of the command.
952 * @param Client The sender of the command.
953 * @param Channel The channel of which the list should be modified.
954 * @param Pattern The pattern to add to the list.
955 * @return CONNECTED or DISCONNECTED.
958 Add_To_List(char what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel,
962 struct list_head *list = NULL;
963 long int current_count;
965 assert(Client != NULL);
966 assert(Channel != NULL);
967 assert(Pattern != NULL);
968 assert(what == 'I' || what == 'b' || what == 'e');
970 mask = Lists_MakeMask(Pattern);
971 current_count = Lists_Count(Channel_GetListInvites(Channel))
972 + Lists_Count(Channel_GetListExcepts(Channel))
973 + Lists_Count(Channel_GetListBans(Channel));
977 list = Channel_GetListInvites(Channel);
980 list = Channel_GetListBans(Channel);
983 list = Channel_GetListExcepts(Channel);
987 if (Lists_CheckDupeMask(list, mask))
989 if (Client_Type(Client) == CLIENT_USER &&
990 current_count >= MAX_HNDL_CHANNEL_LISTS)
991 return IRC_WriteStrClient(Client, ERR_LISTFULL_MSG,
993 Channel_Name(Channel), mask,
994 MAX_HNDL_CHANNEL_LISTS);
998 if (!Channel_AddInvite(Channel, mask, false))
1002 if (!Channel_AddBan(Channel, mask))
1006 if (!Channel_AddExcept(Channel, mask))
1010 return Send_ListChange(true, what, Prefix, Client, Channel, mask);
1015 * Delete entries from channel invite, ban and exeption lists.
1017 * @param what Can be 'I' for invite, 'b' for ban, and 'e' for exception list.
1018 * @param Prefix The originator of the command.
1019 * @param Client The sender of the command.
1020 * @param Channel The channel of which the list should be modified.
1021 * @param Pattern The pattern to add to the list.
1022 * @return CONNECTED or DISCONNECTED.
1025 Del_From_List(char what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel,
1026 const char *Pattern)
1029 struct list_head *list = NULL;
1031 assert(Client != NULL);
1032 assert(Channel != NULL);
1033 assert(Pattern != NULL);
1034 assert(what == 'I' || what == 'b' || what == 'e');
1036 mask = Lists_MakeMask(Pattern);
1040 list = Channel_GetListInvites(Channel);
1043 list = Channel_GetListBans(Channel);
1046 list = Channel_GetListExcepts(Channel);
1050 if (!Lists_CheckDupeMask(list, mask))
1052 Lists_Del(list, mask);
1054 return Send_ListChange(false, what, Prefix, Client, Channel, mask);
1059 * Send information about changed channel invite/ban/exception lists to clients.
1061 * @param IsAdd true if the list item has been added, false otherwise.
1062 * @param ModeChar The mode to use (e. g. 'b' or 'I')
1063 * @param Prefix The originator of the mode list change.
1064 * @param Client The sender of the command.
1065 * @param Channel The channel of which the list has been modified.
1066 * @param Mask The mask which has been added or removed.
1067 * @return CONNECTED or DISCONNECTED.
1070 Send_ListChange(const bool IsAdd, const char ModeChar, CLIENT *Prefix,
1071 CLIENT *Client, CHANNEL *Channel, const char *Mask)
1075 /* Send confirmation to the client */
1076 if (Client_Type(Client) == CLIENT_USER)
1077 ok = IRC_WriteStrClientPrefix(Client, Prefix, "MODE %s %c%c %s",
1078 Channel_Name(Channel),
1082 /* to other servers */
1083 IRC_WriteStrServersPrefix(Client, Prefix, "MODE %s %c%c %s",
1084 Channel_Name(Channel), IsAdd ? '+' : '-',
1087 /* and local users in channel */
1088 IRC_WriteStrChannelPrefix(Client, Channel, Prefix, false,
1089 "MODE %s %c%c %s", Channel_Name(Channel),
1090 IsAdd ? '+' : '-', ModeChar, Mask );
1093 } /* Send_ListChange */