2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
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.
11 * IRC commands for mode changes (MODE, AWAY, ...)
17 static char UNUSED id[] = "$Id: irc-mode.c,v 1.24.2.3 2003/01/08 23:13:45 alex Exp $";
29 #include "irc-write.h"
41 LOCAL BOOLEAN Client_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target ));
42 LOCAL BOOLEAN Channel_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel ));
44 LOCAL BOOLEAN Add_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
45 LOCAL BOOLEAN Add_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
47 LOCAL BOOLEAN Del_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
48 LOCAL BOOLEAN Del_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
50 LOCAL BOOLEAN Send_ListChange PARAMS(( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask ));
54 IRC_MODE( CLIENT *Client, REQUEST *Req )
59 assert( Client != NULL );
60 assert( Req != NULL );
63 if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
65 /* Origin for answers */
66 if( Client_Type( Client ) == CLIENT_SERVER )
68 origin = Client_Search( Req->prefix );
69 if( ! origin ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
73 /* Channel or user mode? */
75 if( Client_IsValidNick( Req->argv[0] )) cl = Client_Search( Req->argv[0] );
76 if( Channel_IsValidName( Req->argv[0] )) chan = Channel_Search( Req->argv[0] );
78 if( cl ) return Client_Mode( Client, Req, origin, cl );
79 if( chan ) return Channel_Mode( Client, Req, origin, chan );
81 /* No target found! */
82 return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
87 Client_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target )
89 /* Handle client mode requests */
91 CHAR the_modes[COMMAND_LEN], x[2], *mode_ptr;
95 /* Is the client allowed to request or change the modes? */
96 if( Client_Type( Client ) == CLIENT_USER )
98 /* Users are only allowed to manipulate their own modes! */
99 if( Target != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
102 /* Mode request: let's answer it :-) */
103 if( Req->argc == 1 ) return IRC_WriteStrClient( Origin, RPL_UMODEIS_MSG, Client_ID( Origin ), Client_Modes( Target ));
106 mode_ptr = Req->argv[mode_arg];
108 /* Initial state: set or unset modes? */
109 if( *mode_ptr == '+' ) set = TRUE;
110 else if( *mode_ptr == '-' ) set = FALSE;
111 else return IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Origin ));
113 /* Prepare reply string */
114 if( set ) strcpy( the_modes, "+" );
115 else strcpy( the_modes, "-" );
124 /* Try next argument if there's any */
126 if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
134 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
136 /* Action modifier ("+"/"-") must be changed ... */
137 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
139 /* Adjust last action modifier in result */
140 the_modes[strlen( the_modes ) - 1] = *mode_ptr;
144 /* Append modifier character to result string */
145 x[0] = *mode_ptr; strcat( the_modes, x );
147 if( *mode_ptr == '+' ) set = TRUE;
159 if( Client_Type( Client ) == CLIENT_SERVER )
162 Client_SetAway( Client, DEFAULT_AWAY_MSG );
164 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
171 /* IRC operator (only unsetable!) */
172 if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
174 Client_SetOperByMe( Target, FALSE );
177 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
180 /* Restricted (only setable) */
181 if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
182 else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
185 /* Server messages */
189 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
190 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
196 /* Is there a valid mode change? */
197 if( ! x[0] ) continue;
202 if( Client_ModeAdd( Target, x[0] )) strcat( the_modes, x );
208 if( Client_ModeDel( Target, x[0] )) strcat( the_modes, x );
213 /* Are there changed modes? */
216 /* Remoce needless action modifier characters */
217 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' )) the_modes[strlen( the_modes ) - 1] = '\0';
219 if( Client_Type( Client ) == CLIENT_SERVER )
221 /* Forward modes to other servers */
222 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
226 /* Send reply to client and inform other servers */
227 ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s", Client_ID( Target ), the_modes );
228 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
230 Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
238 Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
240 /* Handle channel and channel-user modes */
242 CHAR the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr;
243 BOOLEAN ok, set, modeok, skiponce;
244 INT mode_arg, arg_arg;
248 /* Mode request: let's answer it :-) */
251 /* Member or not? -- That's the question! */
252 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), Channel_Modes( Channel ));
254 /* The sender is a member: generate extended reply */
255 strcpy( the_modes, Channel_Modes( Channel ));
256 mode_ptr = the_modes;
257 strcpy( the_args, "" );
263 snprintf( argadd, sizeof( argadd ), " %ld", Channel_MaxUsers( Channel ));
264 strcat( the_args, argadd );
267 strcat( the_args, " " );
268 strcat( the_args, Channel_Key( Channel ));
273 if( the_args[0] ) strcat( the_modes, the_args );
275 return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), the_modes );
278 /* Is the user allowed to change modes? */
279 if( Client_Type( Client ) == CLIENT_USER )
281 if( strchr( Channel_UserModes( Channel, Origin ), 'o' )) modeok = TRUE;
283 if( Conf_OperCanMode )
285 /* auch IRC-Operatoren duerfen MODE verwenden */
286 if( Client_OperByMe( Origin )) modeok = TRUE;
292 mode_ptr = Req->argv[mode_arg];
293 if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
296 /* Initial state: set or unset modes? */
298 if( *mode_ptr == '-' ) set = FALSE;
299 else if( *mode_ptr == '+' ) set = TRUE;
300 else set = skiponce = TRUE;
302 /* Prepare reply string */
303 if( set ) strcpy( the_modes, "+" );
304 else strcpy( the_modes, "-" );
305 strcpy( the_args, " " );
311 if( ! skiponce ) mode_ptr++;
314 /* Try next argument if there's any */
315 if( arg_arg > mode_arg ) mode_arg = arg_arg;
317 if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
319 if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
328 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
330 /* Action modifier ("+"/"-") must be changed ... */
331 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
333 /* Adjust last action modifier in result */
334 the_modes[strlen( the_modes ) - 1] = *mode_ptr;
338 /* Append modifier character to result string */
339 x[0] = *mode_ptr; strcat( the_modes, x );
341 if( *mode_ptr == '+' ) set = TRUE;
347 /* Are there arguments left? */
348 if( arg_arg >= Req->argc ) arg_arg = -1;
359 if( modeok ) x[0] = 'i';
360 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
364 if( modeok ) x[0] = 'm';
365 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
368 /* kein Schreiben in den Channel von aussen */
369 if( modeok ) x[0] = 'n';
370 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
374 if( modeok ) x[0] = 't';
375 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
378 /* Persistent channel */
381 if( set && ( ! Client_OperByMe( Client )))
383 /* Only IRC operators are allowed to set P mode */
384 ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
388 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
391 /* Channel user modes */
393 /* Channel operator */
396 if( arg_arg > mode_arg )
400 client = Client_Search( Req->argv[arg_arg] );
401 if( client ) x[0] = *mode_ptr;
402 else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
404 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
405 Req->argv[arg_arg][0] = '\0';
408 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
414 if( modeok ) x[0] = *mode_ptr;
415 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
418 if( arg_arg > mode_arg )
422 Channel_ModeDel( Channel, 'k' );
423 Channel_SetKey( Channel, Req->argv[arg_arg] );
424 strcpy( argadd, Channel_Key( Channel ));
427 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
428 Req->argv[arg_arg][0] = '\0';
431 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
437 if( modeok ) x[0] = *mode_ptr;
438 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
441 if( arg_arg > mode_arg )
445 l = atol( Req->argv[arg_arg] );
446 if( l > 0 && l < 0xFFFF )
448 Channel_ModeDel( Channel, 'l' );
449 Channel_SetMaxUsers( Channel, l );
450 sprintf( argadd, "%ld", l );
454 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
455 Req->argv[arg_arg][0] = '\0';
458 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
464 if( arg_arg > mode_arg )
469 if( set ) Add_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
470 else Del_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
472 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
473 Req->argv[arg_arg][0] = '\0';
476 else Lists_ShowInvites( Origin, Channel );
480 if( arg_arg > mode_arg )
485 if( set ) Add_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
486 else Del_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
488 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
489 Req->argv[arg_arg][0] = '\0';
492 else Lists_ShowBans( Origin, Channel );
496 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
497 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
503 /* Is there a valid mode change? */
504 if( ! x[0] ) continue;
511 /* Channel-User-Mode */
512 if( Channel_UserModeAdd( Channel, client, x[0] ))
514 strcat( the_args, Client_ID( client ));
515 strcat( the_args, " " ); strcat( the_modes, x );
516 Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
522 if( Channel_ModeAdd( Channel, x[0] ))
524 strcat( the_modes, x );
525 Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
534 /* Channel-User-Mode */
535 if( Channel_UserModeDel( Channel, client, x[0] ))
537 strcat( the_args, Client_ID( client ));
538 strcat( the_args, " " ); strcat( the_modes, x );
539 Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
545 if( Channel_ModeDel( Channel, x[0] ))
547 strcat( the_modes, x );
548 Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
553 /* Are there additional arguments to add? */
556 if( the_args[strlen( the_args ) - 1] != ' ' ) strcat( the_args, " " );
557 strcat( the_args, argadd );
562 /* Are there changed modes? */
565 /* Clean up mode string */
566 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' )) the_modes[strlen( the_modes ) - 1] = '\0';
568 /* Clean up argument string if there are none */
569 if( ! the_args[1] ) the_args[0] = '\0';
571 if( Client_Type( Client ) == CLIENT_SERVER )
573 /* Forward mode changes to channel users and other servers */
574 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
575 IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
579 /* Send reply to client and inform other servers and channel users */
580 ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
581 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
582 IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
591 IRC_AWAY( CLIENT *Client, REQUEST *Req )
593 assert( Client != NULL );
594 assert( Req != NULL );
596 /* Falsche Anzahl Parameter? */
597 if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
599 if(( Req->argc == 1 ) && (Req->argv[0][0] ))
602 Client_SetAway( Client, Req->argv[0] );
603 Client_ModeAdd( Client, 'a' );
604 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
605 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
610 Client_ModeDel( Client, 'a' );
611 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
612 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
618 Add_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
622 assert( Client != NULL );
623 assert( Channel != NULL );
624 assert( Pattern != NULL );
626 mask = Lists_MakeMask( Pattern );
628 if( ! Lists_AddInvited( Prefix, mask, Channel, FALSE )) return CONNECTED;
629 return Send_ListChange( "+I", Prefix, Client, Channel, mask );
634 Add_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
638 assert( Client != NULL );
639 assert( Channel != NULL );
640 assert( Pattern != NULL );
642 mask = Lists_MakeMask( Pattern );
644 if( ! Lists_AddBanned( Prefix, mask, Channel )) return CONNECTED;
645 return Send_ListChange( "+b", Prefix, Client, Channel, mask );
650 Del_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
654 assert( Client != NULL );
655 assert( Channel != NULL );
656 assert( Pattern != NULL );
658 mask = Lists_MakeMask( Pattern );
659 Lists_DelInvited( mask, Channel );
660 return Send_ListChange( "-I", Prefix, Client, Channel, mask );
665 Del_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
669 assert( Client != NULL );
670 assert( Channel != NULL );
671 assert( Pattern != NULL );
673 mask = Lists_MakeMask( Pattern );
674 Lists_DelBanned( mask, Channel );
675 return Send_ListChange( "-b", Prefix, Client, Channel, mask );
680 Send_ListChange( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask )
682 /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
686 if( Client_Type( Client ) == CLIENT_USER )
688 /* Bestaetigung an Client */
689 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
693 /* an andere Server */
694 IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
696 /* und lokale User im Channel */
697 IRC_WriteStrChannelPrefix( Client, Channel, Prefix, FALSE, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
700 } /* Send_ListChange */