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 2002/12/18 14:16:21 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 ) x[0] = 'a';
160 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
167 /* IRC operator (only unsetable!) */
168 if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
170 Client_SetOperByMe( Target, FALSE );
173 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
176 /* Restricted (only setable) */
177 if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
178 else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
181 /* Server messages */
185 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
186 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
192 /* Is there a valid mode change? */
193 if( ! x[0] ) continue;
198 if( Client_ModeAdd( Target, x[0] )) strcat( the_modes, x );
204 if( Client_ModeDel( Target, x[0] )) strcat( the_modes, x );
209 /* Are there changed modes? */
212 /* Remoce needless action modifier characters */
213 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' )) the_modes[strlen( the_modes ) - 1] = '\0';
215 if( Client_Type( Client ) == CLIENT_SERVER )
217 /* Forward modes to other servers */
218 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
222 /* Send reply to client and inform other servers */
223 ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s", Client_ID( Target ), the_modes );
224 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
226 Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
234 Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
236 /* Handle channel and channel-user modes */
238 CHAR the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr;
239 BOOLEAN ok, set, modeok, skiponce;
240 INT mode_arg, arg_arg;
244 /* Mode request: let's answer it :-) */
245 if( Req->argc == 1 ) return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), Channel_Modes( Channel ));
247 /* Is the user allowed to change modes? */
248 if( Client_Type( Client ) == CLIENT_USER )
250 if( strchr( Channel_UserModes( Channel, Origin ), 'o' )) modeok = TRUE;
252 if( Conf_OperCanMode )
254 /* auch IRC-Operatoren duerfen MODE verwenden */
255 if( Client_OperByMe( Origin )) modeok = TRUE;
261 mode_ptr = Req->argv[mode_arg];
262 if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
265 /* Initial state: set or unset modes? */
267 if( *mode_ptr == '-' ) set = FALSE;
268 else if( *mode_ptr == '+' ) set = TRUE;
269 else set = skiponce = TRUE;
271 /* Prepare reply string */
272 if( set ) strcpy( the_modes, "+" );
273 else strcpy( the_modes, "-" );
274 strcpy( the_args, " " );
280 if( ! skiponce ) mode_ptr++;
283 /* Try next argument if there's any */
284 if( arg_arg > mode_arg ) mode_arg = arg_arg;
286 if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
288 if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
297 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
299 /* Action modifier ("+"/"-") must be changed ... */
300 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
302 /* Adjust last action modifier in result */
303 the_modes[strlen( the_modes ) - 1] = *mode_ptr;
307 /* Append modifier character to result string */
308 x[0] = *mode_ptr; strcat( the_modes, x );
310 if( *mode_ptr == '+' ) set = TRUE;
316 /* Are there arguments left? */
317 if( arg_arg >= Req->argc ) arg_arg = -1;
328 if( modeok ) x[0] = 'i';
329 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
333 if( modeok ) x[0] = 'm';
334 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
337 /* kein Schreiben in den Channel von aussen */
338 if( modeok ) x[0] = 'n';
339 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
343 if( modeok ) x[0] = 't';
344 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
347 /* Persistent channel */
350 if( set && ( ! Client_OperByMe( Client )))
352 /* Only IRC operators are allowed to set P mode */
353 ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
357 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
360 /* Channel user modes */
362 /* Channel operator */
365 if( arg_arg > mode_arg )
369 client = Client_Search( Req->argv[arg_arg] );
370 if( client ) x[0] = *mode_ptr;
371 else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
373 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
374 Req->argv[arg_arg][0] = '\0';
377 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
383 if( modeok ) x[0] = *mode_ptr;
384 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
387 if( arg_arg > mode_arg )
391 Channel_ModeDel( Channel, 'k' );
392 Channel_SetKey( Channel, Req->argv[arg_arg] );
393 strcpy( argadd, Channel_Key( Channel ));
396 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
397 Req->argv[arg_arg][0] = '\0';
400 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
406 if( modeok ) x[0] = *mode_ptr;
407 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
410 if( arg_arg > mode_arg )
414 l = atol( Req->argv[arg_arg] );
415 if( l > 0 && l < 0xFFFF )
417 Channel_ModeDel( Channel, 'l' );
418 Channel_SetMaxUsers( Channel, l );
419 sprintf( argadd, "%ld", l );
423 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
424 Req->argv[arg_arg][0] = '\0';
427 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
433 if( arg_arg > mode_arg )
438 if( set ) Add_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
439 else Del_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
441 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
442 Req->argv[arg_arg][0] = '\0';
445 else Lists_ShowInvites( Origin, Channel );
449 if( arg_arg > mode_arg )
454 if( set ) Add_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
455 else Del_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
457 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
458 Req->argv[arg_arg][0] = '\0';
461 else Lists_ShowBans( Origin, Channel );
465 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
466 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
472 /* Is there a valid mode change? */
473 if( ! x[0] ) continue;
480 /* Channel-User-Mode */
481 if( Channel_UserModeAdd( Channel, client, x[0] ))
483 strcat( the_args, Client_ID( client ));
484 strcat( the_args, " " ); strcat( the_modes, x );
485 Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
491 if( Channel_ModeAdd( Channel, x[0] ))
493 strcat( the_modes, x );
494 Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
503 /* Channel-User-Mode */
504 if( Channel_UserModeDel( Channel, client, x[0] ))
506 strcat( the_args, Client_ID( client ));
507 strcat( the_args, " " ); strcat( the_modes, x );
508 Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
514 if( Channel_ModeDel( Channel, x[0] ))
516 strcat( the_modes, x );
517 Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
522 /* Are there additional arguments to add? */
525 if( the_args[strlen( the_args ) - 1] != ' ' ) strcat( the_args, " " );
526 strcat( the_args, argadd );
531 /* Are there changed modes? */
534 /* Clean up mode string */
535 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' )) the_modes[strlen( the_modes ) - 1] = '\0';
537 /* Clean up argument string if there are none */
538 if( ! the_args[1] ) the_args[0] = '\0';
540 if( Client_Type( Client ) == CLIENT_SERVER )
542 /* Forward mode changes to channel users and other servers */
543 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
544 IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
548 /* Send reply to client and inform other servers and channel users */
549 ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
550 IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
551 IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
560 IRC_AWAY( CLIENT *Client, REQUEST *Req )
562 assert( Client != NULL );
563 assert( Req != NULL );
565 /* Falsche Anzahl Parameter? */
566 if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
568 if(( Req->argc == 1 ) && (Req->argv[0][0] ))
571 Client_SetAway( Client, Req->argv[0] );
572 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
573 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
578 Client_SetAway( Client, NULL );
579 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
580 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
586 Add_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
590 assert( Client != NULL );
591 assert( Channel != NULL );
592 assert( Pattern != NULL );
594 mask = Lists_MakeMask( Pattern );
596 if( ! Lists_AddInvited( Prefix, mask, Channel, FALSE )) return CONNECTED;
597 return Send_ListChange( "+I", Prefix, Client, Channel, mask );
602 Add_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
606 assert( Client != NULL );
607 assert( Channel != NULL );
608 assert( Pattern != NULL );
610 mask = Lists_MakeMask( Pattern );
612 if( ! Lists_AddBanned( Prefix, mask, Channel )) return CONNECTED;
613 return Send_ListChange( "+b", Prefix, Client, Channel, mask );
618 Del_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 );
627 Lists_DelInvited( mask, Channel );
628 return Send_ListChange( "-I", Prefix, Client, Channel, mask );
633 Del_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
637 assert( Client != NULL );
638 assert( Channel != NULL );
639 assert( Pattern != NULL );
641 mask = Lists_MakeMask( Pattern );
642 Lists_DelBanned( mask, Channel );
643 return Send_ListChange( "-b", Prefix, Client, Channel, mask );
648 Send_ListChange( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask )
650 /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
654 if( Client_Type( Client ) == CLIENT_USER )
656 /* Bestaetigung an Client */
657 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
661 /* an andere Server */
662 IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
664 /* und lokale User im Channel */
665 IRC_WriteStrChannelPrefix( Client, Channel, Prefix, FALSE, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
668 } /* Send_ListChange */