src/ngircd/irc-mode.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
   4  *
   5  * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
   6  * der GNU General Public License (GPL), wie von der Free Software Foundation
   7  * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
   8  * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
   9  * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
  10  * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
  11  *
  12  * $Id: irc-mode.c,v 1.15 2002/11/22 18:28:22 alex Exp $
  13  *
  14  * irc-mode.c: IRC-Befehle zur Mode-Aenderung (MODE, AWAY, ...)
  15  */
  16
  17
  18 #include "portab.h"
  19
  20 #include "imp.h"
  21 #include <assert.h>
  22 #include <string.h>
  23
  24 #include "conn.h"
  25 #include "client.h"
  26 #include "channel.h"
  27 #include "defines.h"
  28 #include "irc-write.h"
  29 #include "lists.h"
  30 #include "log.h"
  31 #include "parse.h"
  32 #include "messages.h"
  33 #include "resolve.h"
  34 #include "conf.h"
  35
  36 #include "exp.h"
  37 #include "irc-mode.h"
  38
  39
  40 LOCAL BOOLEAN Add_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
  41 LOCAL BOOLEAN Add_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
  42
  43 LOCAL BOOLEAN Del_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
  44 LOCAL BOOLEAN Del_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
  45
  46 LOCAL BOOLEAN Send_ListChange PARAMS(( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask ));
  47
  48
  49 GLOBAL BOOLEAN
  50 IRC_MODE( CLIENT *Client, REQUEST *Req )
  51 {
  52         CHAR *mode_ptr, the_modes[CLIENT_MODE_LEN], x[2];
  53         CLIENT *cl, *chan_cl, *prefix;
  54         BOOLEAN set, ok, modeok;
  55         CHANNEL *chan;
  56
  57         assert( Client != NULL );
  58         assert( Req != NULL );
  59
  60         cl = chan_cl = prefix = NULL;
  61         chan = NULL;
  62
  63         /* Valider Client? */
  64         if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
  65
  66         /* Keine Parameter? */
  67         if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  68
  69         /* Ziel suchen: Client bzw. Channel */
  70         if( Client_IsValidNick( Req->argv[0] )) cl = Client_Search( Req->argv[0] );
  71         if( Channel_IsValidName( Req->argv[0] )) chan = Channel_Search( Req->argv[0] );
  72
  73         /* Kein Ziel gefunden? */
  74         if(( ! cl ) && ( ! chan )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
  75
  76         assert(( cl && chan ) != TRUE );
  77
  78         /* Falsche Anzahl Parameter? */
  79         if(( cl ) && ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  80         if(( chan ) && ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  81
  82         /* Prefix fuer Antworten etc. ermitteln */
  83         if( Client_Type( Client ) == CLIENT_SERVER )
  84         {
  85                 prefix = Client_Search( Req->prefix );
  86                 if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  87         }
  88         else prefix = Client;
  89
  90         if(( chan ) && (( Req->argc == 2 ) || ( Req->argc == 3 )))
  91         {
  92                 /* pruefen, ob "Listen-Operation": Invite, Ban */
  93                 if(( Req->argv[1][0] == '-'  ) || ( Req->argv[1][0] == '+' )) mode_ptr = &Req->argv[1][1];
  94                 else mode_ptr = &Req->argv[1][0];
  95
  96                 if( Req->argc == 2 )
  97                 {
  98                         /* Liste anzeigen */
  99                         if( *mode_ptr == 'I' ) return Lists_ShowInvites( prefix, chan );
 100                         if( *mode_ptr == 'b' ) return Lists_ShowBans( prefix, chan );
 101                 }
 102                 else
 103                 {
 104                         /* Listen veraendern */
 105
 106                         if( Client_Type( Client ) == CLIENT_USER )
 107                         {
 108                                 /* Ist der User Channel-Operator? */
 109                                 modeok = FALSE;
 110                                 if( strchr( Channel_UserModes( chan, Client ), 'o' )) modeok = TRUE;
 111                                 if( Conf_OperCanMode )
 112                                 {
 113                                         /* auch IRC-Operatoren duerfen MODE verwenden */
 114                                         if( Client_OperByMe( Client )) modeok = TRUE;
 115                                 }
 116
 117                                 if( ! modeok )
 118                                 {
 119                                         Log( LOG_DEBUG, "Can't change modes: \"%s\" is not operator on %s!", Client_ID( Client ), Channel_Name( chan ));
 120                                         return IRC_WriteStrClient( Client, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Client ), Channel_Name( chan ));
 121                                 }
 122                         }
 123
 124                         if( Req->argv[1][0] == '+' )
 125                         {
 126                                 /* Listen-Eintrag hinzufuegen */
 127                                 if( *mode_ptr == 'I' ) return Add_Invite( prefix, Client, chan, Req->argv[2] );
 128                                 if( *mode_ptr == 'b' ) return Add_Ban( prefix, Client, chan, Req->argv[2] );
 129                         }
 130                         else if( Req->argv[1][0] == '-' )
 131                         {
 132                                 /* Listen-Eintrag loeschen */
 133                                 if( *mode_ptr == 'I' ) return Del_Invite( prefix, Client, chan, Req->argv[2] );
 134                                 if( *mode_ptr == 'b' ) return Del_Ban( prefix, Client, chan, Req->argv[2] );
 135                         }
 136                 }
 137         }
 138
 139         /* Client ermitteln, wenn bei Channel-Modes mit 3 Parametern */
 140         if(( chan ) && (Req->argc == 3 ))
 141         {
 142                 chan_cl = Client_Search( Req->argv[2] );
 143                 if( ! chan_cl ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
 144         }
 145
 146         /* Wenn Anfragender ein User ist: Zugriff erlaubt? */
 147         if( Client_Type( Client ) == CLIENT_USER )
 148         {
 149                 if( cl )
 150                 {
 151                         /* MODE ist nur fuer sich selber zulaessig! */
 152                         if( cl != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
 153                 }
 154                 if( chan )
 155                 {
 156                         /* Darf der User die Channel-Modes ermitteln? */
 157                 }
 158         }
 159
 160         /* Werden die Modes "nur" erfragt? */
 161         if(( cl ) && ( Req->argc == 1 )) return IRC_WriteStrClient( Client, RPL_UMODEIS_MSG, Client_ID( Client ), Client_Modes( cl ));
 162         if(( chan ) && ( Req->argc == 1 )) return IRC_WriteStrClient( Client, RPL_CHANNELMODEIS_MSG, Client_ID( Client ), Channel_Name( chan ), Channel_Modes( chan ));
 163
 164         mode_ptr = Req->argv[1];
 165
 166         /* Sollen Modes gesetzt oder geloescht werden? */
 167         if( cl )
 168         {
 169                 if( *mode_ptr == '+' ) set = TRUE;
 170                 else if( *mode_ptr == '-' ) set = FALSE;
 171                 else return IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Client ));
 172                 mode_ptr++;
 173         }
 174         else
 175         {
 176                 if( *mode_ptr == '-' ) set = FALSE;
 177                 else set = TRUE;
 178                 if(( *mode_ptr == '-' ) || ( *mode_ptr == '+' )) mode_ptr++;
 179         }
 180
 181         /* Reply-String mit Aenderungen vorbereiten */
 182         if( set ) strcpy( the_modes, "+" );
 183         else strcpy( the_modes, "-" );
 184
 185         ok = TRUE;
 186         x[1] = '\0';
 187         while( *mode_ptr )
 188         {
 189                 x[0] = '\0';
 190                 if( Client_Type( Client ) == CLIENT_SERVER )
 191                 {
 192                         /* Befehl kommt von einem Server, daher
 193                          * trauen wir ihm "unbesehen" ... */
 194                         x[0] = *mode_ptr;
 195                 }
 196                 else
 197                 {
 198                         /* Modes validieren */
 199                         if( cl )
 200                         {
 201                                 /* User-Modes */
 202                                 switch( *mode_ptr )
 203                                 {
 204                                         case 'i':
 205                                                 /* invisible */
 206                                                 x[0] = 'i';
 207                                                 break;
 208                                         case 'o':
 209                                                 /* operator (kann nur geloescht werden) */
 210                                                 if( ! set )
 211                                                 {
 212                                                         Client_SetOperByMe( Client, FALSE );
 213                                                         x[0] = 'o';
 214                                                 }
 215                                                 else ok = IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG, Client_ID( Client ));
 216                                                 break;
 217                                         case 'r':
 218                                                 /* restricted (kann nur gesetzt werden) */
 219                                                 if( set ) x[0] = 'r';
 220                                                 else ok = IRC_WriteStrClient( Client, ERR_RESTRICTED_MSG, Client_ID( Client ));
 221                                                 break;
 222                                         case 's':
 223                                                 /* server messages */
 224                                                 x[0] = 's';
 225                                                 break;
 226                                         default:
 227                                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ));
 228                                                 ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
 229                                                 x[0] = '\0';
 230                                 }
 231                         }
 232                         if( chan )
 233                         {
 234                                 /* Ist der User ein Channel Operator? */
 235                                 modeok = FALSE;
 236                                 if( strchr( Channel_UserModes( chan, Client ), 'o' )) modeok = TRUE;
 237                                 if( Conf_OperCanMode )
 238                                 {
 239                                         /* auch IRC-Operatoren duerfen MODE verwenden */
 240                                         if( Client_OperByMe( Client )) modeok = TRUE;
 241                                 }
 242
 243                                 if( ! modeok )
 244                                 {
 245                                         Log( LOG_DEBUG, "Can't change modes: \"%s\" is not operator on %s!", Client_ID( Client ), Channel_Name( chan ));
 246                                         ok = IRC_WriteStrClient( Client, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Client ), Channel_Name( chan ));
 247                                         break;
 248                                 }
 249
 250                                 /* Channel-Modes oder Channel-User-Modes */
 251                                 if( chan_cl )
 252                                 {
 253                                         /* Channel-User-Modes */
 254                                         switch( *mode_ptr )
 255                                         {
 256                                                 case 'o':
 257                                                         /* Channel Operator */
 258                                                         x[0] = 'o';
 259                                                         break;
 260                                                 case 'v':
 261                                                         /* Voice */
 262                                                         x[0] = 'v';
 263                                                         break;
 264                                                 default:
 265                                                         Log( LOG_DEBUG, "Unknown channel-user-mode \"%c%c\" from \"%s\" on \"%s\" at %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ), Client_ID( chan_cl ), Channel_Name( chan ));
 266                                                         ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
 267                                                         x[0] = '\0';
 268                                         }
 269                                 }
 270                                 else
 271                                 {
 272                                         /* Channel-Modes */
 273                                         switch( *mode_ptr )
 274                                         {
 275                                                 case 'i':
 276                                                         /* Invite-Only */
 277                                                         x[0] = 'i';
 278                                                         break;
 279                                                 case 'm':
 280                                                         /* Moderated */
 281                                                         x[0] = 'm';
 282                                                         break;
 283                                                 case 'n':
 284                                                         /* kein Schreiben in den Channel von aussen */
 285                                                         x[0] = 'n';
 286                                                         break;
 287                                                 case 't':
 288                                                         /* Topic Lock */
 289                                                         x[0] = 't';
 290                                                         break;
 291                                                 case 'P':
 292                                                         /* Persistent. Dieses Flag darf nur von IRC-Operatoren gesetzt werden! */
 293                                                         if( set && ( ! Client_OperByMe( Client )))
 294                                                         {
 295                                                                 ok = IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG, Client_ID( Client ));
 296                                                         }
 297                                                         else x[0] = 'P';
 298                                                         break;
 299                                                 default:
 300                                                         Log( LOG_DEBUG, "Unknown channel-mode \"%c%c\" from \"%s\" at %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ), Channel_Name( chan ));
 301                                                         ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
 302                                                         x[0] = '\0';
 303                                         }
 304                                 }
 305                         }
 306                 }
 307                 if( ! ok ) break;
 308
 309                 mode_ptr++;
 310                 if( ! x[0] ) continue;
 311
 312                 /* Okay, gueltigen Mode gefunden */
 313                 if( cl )
 314                 {
 315                         /* Es geht um User-Modes */
 316                         if( set )
 317                         {
 318                                 /* Mode setzen. Wenn der Client ihn noch nicht hatte: merken */
 319                                 if( Client_ModeAdd( cl, x[0] )) strcat( the_modes, x );
 320
 321                         }
 322                         else
 323                         {
 324                                 /* Modes geloescht. Wenn der Client ihn hatte: merken */
 325                                 if( Client_ModeDel( cl, x[0] )) strcat( the_modes, x );
 326                         }
 327
 328                         /* "nachbearbeiten" */
 329                         if( x[0] == 'a' )
 330                         {
 331                                 /* away */
 332                                 if( set ) Client_SetAway( cl, DEFAULT_AWAY_MSG );
 333                                 else Client_SetAway( cl, NULL );
 334                         }
 335                 }
 336                 if( chan )
 337                 {
 338                         /* Es geht um Channel-Modes oder Channel-User-Modes */
 339                         if( chan_cl )
 340                         {
 341                                 /* Channel-User-Modes */
 342                                 if( set )
 343                                 {
 344                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 345                                         if( Channel_UserModeAdd( chan, chan_cl, x[0] )) strcat( the_modes, x );
 346                                 }
 347                                 else
 348                                 {
 349                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 350                                         if( Channel_UserModeDel( chan, chan_cl, x[0] )) strcat( the_modes, x );
 351                                 }
 352                         }
 353                         else
 354                         {
 355                                 /* Channel-Mode */
 356                                 if( set )
 357                                 {
 358                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 359                                         if( Channel_ModeAdd( chan, x[0] )) strcat( the_modes, x );
 360                                 }
 361                                 else
 362                                 {
 363                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 364                                         if( Channel_ModeDel( chan, x[0] )) strcat( the_modes, x );
 365                                 }
 366                         }
 367                 }
 368         }
 369
 370         /* Wurden Modes geaendert? */
 371         if( the_modes[1] )
 372         {
 373                 if( cl )
 374                 {
 375                         /* Client-Mode */
 376                         if( Client_Type( Client ) == CLIENT_SERVER )
 377                         {
 378                                 /* Modes an andere Server forwarden */
 379                                 IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Client_ID( cl ), the_modes );
 380                         }
 381                         else
 382                         {
 383                                 /* Bestaetigung an Client schicken & andere Server informieren */
 384                                 ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s", Client_ID( cl ), the_modes );
 385                                 IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Client_ID( cl ), the_modes );
 386                         }
 387                         Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( cl ), Client_Modes( cl ));
 388                 }
 389                 if( chan )
 390                 {
 391                         /* Channel-Modes oder Channel-User-Mode */
 392                         if( chan_cl )
 393                         {
 394                                 /* Channel-User-Mode */
 395                                 if( Client_Type( Client ) == CLIENT_SERVER )
 396                                 {
 397                                         /* Modes an andere Server und Channel-User forwarden */
 398                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s %s :%s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 399                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 400                                 }
 401                                 else
 402                                 {
 403                                         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 404                                         ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 405                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s %s :%s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 406                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 407                                 }
 408                                 Log( LOG_DEBUG, "User \"%s\" on %s: Mode change, now \"%s\".", Client_Mask( chan_cl), Channel_Name( chan ), Channel_UserModes( chan, chan_cl ));
 409                         }
 410                         else
 411                         {
 412                                 /* Channel-Mode */
 413                                 if( Client_Type( Client ) == CLIENT_SERVER )
 414                                 {
 415                                         /* Modes an andere Server und Channel-User forwarden */
 416                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Channel_Name( chan ), the_modes );
 417                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s", Channel_Name( chan ), the_modes );
 418                                 }
 419                                 else
 420                                 {
 421                                         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 422                                         ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s", Channel_Name( chan ), the_modes );
 423                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Channel_Name( chan ), the_modes );
 424                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s", Channel_Name( chan ), the_modes );
 425                                 }
 426                                 Log( LOG_DEBUG, "Channel \"%s\": Mode change, now \"%s\".", Channel_Name( chan ), Channel_Modes( chan ));
 427                         }
 428                 }
 429         }
 430
 431         return ok;
 432 } /* IRC_MODE */
 433
 434
 435 GLOBAL BOOLEAN
 436 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 437 {
 438         assert( Client != NULL );
 439         assert( Req != NULL );
 440
 441         if( Client_Type( Client ) != CLIENT_USER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
 442
 443         /* Falsche Anzahl Parameter? */
 444         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 445
 446         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 447         {
 448                 /* AWAY setzen */
 449                 Client_SetAway( Client, Req->argv[0] );
 450                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 451                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 452         }
 453         else
 454         {
 455                 /* AWAY loeschen */
 456                 Client_SetAway( Client, NULL );
 457                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 458                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 459         }
 460 } /* IRC_AWAY */
 461
 462
 463 LOCAL BOOLEAN
 464 Add_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 465 {
 466         CHAR *mask;
 467
 468         assert( Client != NULL );
 469         assert( Channel != NULL );
 470         assert( Pattern != NULL );
 471
 472         mask = Lists_MakeMask( Pattern );
 473
 474         if( ! Lists_AddInvited( Prefix, mask, Channel, FALSE )) return CONNECTED;
 475         return Send_ListChange( "+I", Prefix, Client, Channel, mask );
 476 } /* Add_Invite */
 477
 478
 479 LOCAL BOOLEAN
 480 Add_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 481 {
 482         CHAR *mask;
 483
 484         assert( Client != NULL );
 485         assert( Channel != NULL );
 486         assert( Pattern != NULL );
 487
 488         mask = Lists_MakeMask( Pattern );
 489
 490         if( ! Lists_AddBanned( Prefix, mask, Channel )) return CONNECTED;
 491         return Send_ListChange( "+b", Prefix, Client, Channel, mask );
 492 } /* Add_Ban */
 493
 494
 495 LOCAL BOOLEAN
 496 Del_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 497 {
 498         CHAR *mask;
 499
 500         assert( Client != NULL );
 501         assert( Channel != NULL );
 502         assert( Pattern != NULL );
 503
 504         mask = Lists_MakeMask( Pattern );
 505         Lists_DelInvited( mask, Channel );
 506         return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 507 } /* Del_Invite */
 508
 509
 510 LOCAL BOOLEAN
 511 Del_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 512 {
 513         CHAR *mask;
 514
 515         assert( Client != NULL );
 516         assert( Channel != NULL );
 517         assert( Pattern != NULL );
 518
 519         mask = Lists_MakeMask( Pattern );
 520         Lists_DelBanned( mask, Channel );
 521         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 522 } /* Del_Ban */
 523
 524
 525 LOCAL BOOLEAN
 526 Send_ListChange( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask )
 527 {
 528         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 529
 530         BOOLEAN ok;
 531
 532         if( Client_Type( Client ) == CLIENT_USER )
 533         {
 534                 /* Bestaetigung an Client */
 535                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 536         }
 537         else ok = TRUE;
 538
 539         /* an andere Server */
 540         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 541
 542         /* und lokale User im Channel */
 543         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, FALSE, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 544
 545         return ok;
 546 } /* Send_ListChange */
 547
 548
 549 /* -eof- */