src/ngircd/irc-mode.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2005 Alexander Barton (alex@barton.de)
   4  *
   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.
  10  *
  11  * IRC commands for mode changes (MODE, AWAY, ...)
  12  */
  13
  14
  15 #include "portab.h"
  16
  17 static char UNUSED id[] = "$Id: irc-mode.c,v 1.36 2005/02/27 20:09:44 alex Exp $";
  18
  19 #include "imp.h"
  20 #include <assert.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "conn.h"
  26 #include "client.h"
  27 #include "channel.h"
  28 #include "defines.h"
  29 #include "irc-write.h"
  30 #include "lists.h"
  31 #include "log.h"
  32 #include "parse.h"
  33 #include "messages.h"
  34 #include "resolve.h"
  35 #include "conf.h"
  36
  37 #include "exp.h"
  38 #include "irc-mode.h"
  39
  40
  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 ));
  43
  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 ));
  46
  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 ));
  49
  50 LOCAL BOOLEAN Send_ListChange PARAMS(( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask ));
  51
  52
  53 GLOBAL BOOLEAN
  54 IRC_MODE( CLIENT *Client, REQUEST *Req )
  55 {
  56         CLIENT *cl, *origin;
  57         CHANNEL *chan;
  58
  59         assert( Client != NULL );
  60         assert( Req != NULL );
  61
  62         /* No parameters? */
  63         if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  64
  65         /* Origin for answers */
  66         if( Client_Type( Client ) == CLIENT_SERVER )
  67         {
  68                 origin = Client_Search( Req->prefix );
  69                 if( ! origin ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  70         }
  71         else origin = Client;
  72
  73         /* Channel or user mode? */
  74         cl = chan = NULL;
  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] );
  77
  78         if( cl ) return Client_Mode( Client, Req, origin, cl );
  79         if( chan ) return Channel_Mode( Client, Req, origin, chan );
  80
  81         /* No target found! */
  82         return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
  83 } /* IRC_MODE */
  84
  85
  86 LOCAL BOOLEAN
  87 Client_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target )
  88 {
  89         /* Handle client mode requests */
  90
  91         CHAR the_modes[COMMAND_LEN], x[2], *mode_ptr;
  92         BOOLEAN ok, set;
  93         INT mode_arg;
  94
  95         /* Is the client allowed to request or change the modes? */
  96         if( Client_Type( Client ) == CLIENT_USER )
  97         {
  98                 /* Users are only allowed to manipulate their own modes! */
  99                 if( Target != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
 100         }
 101
 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 ));
 104
 105         mode_arg = 1;
 106         mode_ptr = Req->argv[mode_arg];
 107
 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 ));
 112
 113         /* Prepare reply string */
 114         if( set ) strcpy( the_modes, "+" );
 115         else strcpy( the_modes, "-" );
 116
 117         x[1] = '\0';
 118         ok = CONNECTED;
 119         while( mode_ptr )
 120         {
 121                 mode_ptr++;
 122                 if( ! *mode_ptr )
 123                 {
 124                         /* Try next argument if there's any */
 125                         mode_arg++;
 126                         if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
 127                         else break;
 128                 }
 129
 130                 switch( *mode_ptr )
 131                 {
 132                         case '+':
 133                         case '-':
 134                                 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
 135                                 {
 136                                         /* Action modifier ("+"/"-") must be changed ... */
 137                                         if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
 138                                         {
 139                                                 /* Adjust last action modifier in result */
 140                                                 the_modes[strlen( the_modes ) - 1] = *mode_ptr;
 141                                         }
 142                                         else
 143                                         {
 144                                                 /* Append modifier character to result string */
 145                                                 x[0] = *mode_ptr;
 146                                                 strlcat( the_modes, x, sizeof( the_modes ));
 147                                         }
 148                                         if( *mode_ptr == '+' ) set = TRUE;
 149                                         else set = FALSE;
 150                                 }
 151                                 continue;
 152                 }
 153
 154                 /* Validate modes */
 155                 x[0] = '\0';
 156                 switch( *mode_ptr )
 157                 {
 158                         case 'i': /* Invisible */
 159                         case 's': /* Server messages */
 160                                 x[0] = *mode_ptr;
 161                                 break;
 162
 163                         case 'a': /* Away */
 164                                 if( Client_Type( Client ) == CLIENT_SERVER )
 165                                 {
 166                                         x[0] = 'a';
 167                                         Client_SetAway( Client, DEFAULT_AWAY_MSG );
 168                                 }
 169                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 170                                 break;
 171
 172                         case 'o': /* IRC operator (only unsettable!) */
 173                                 if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
 174                                 {
 175                                         Client_SetOperByMe( Target, FALSE );
 176                                         x[0] = 'o';
 177                                 }
 178                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 179                                 break;
 180
 181                         case 'r': /* Restricted (only settable) */
 182                                 if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
 183                                 else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
 184                                 break;
 185
 186                         default:
 187                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
 188                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 189                                 x[0] = '\0';
 190                                 goto client_exit;
 191                 }
 192                 if( ! ok ) break;
 193
 194                 /* Is there a valid mode change? */
 195                 if( ! x[0] ) continue;
 196
 197                 if( set )
 198                 {
 199                         /* Set mode */
 200                         if( Client_ModeAdd( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 201
 202                 }
 203                 else
 204                 {
 205                         /* Unset mode */
 206                         if( Client_ModeDel( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 207                 }
 208         }
 209 client_exit:
 210
 211         /* Are there changed modes? */
 212         if( the_modes[1] )
 213         {
 214                 /* Remoce needless action modifier characters */
 215                 if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' )) the_modes[strlen( the_modes ) - 1] = '\0';
 216
 217                 if( Client_Type( Client ) == CLIENT_SERVER )
 218                 {
 219                         /* Forward modes to other servers */
 220                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 221                 }
 222                 else
 223                 {
 224                         /* Send reply to client and inform other servers */
 225                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 226                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 227                 }
 228                 Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
 229         }
 230
 231         IRC_SetPenalty( Client, 1 );
 232         return ok;
 233 } /* Client_Mode */
 234
 235
 236 LOCAL BOOLEAN
 237 Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
 238 {
 239         /* Handle channel and channel-user modes */
 240
 241         CHAR the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr;
 242         BOOLEAN ok, set, modeok, skiponce;
 243         INT mode_arg, arg_arg;
 244         CLIENT *client;
 245         LONG l;
 246
 247         /* Mode request: let's answer it :-) */
 248         if( Req->argc == 1 )
 249         {
 250                 /* Member or not? -- That's the question! */
 251                 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), Channel_Modes( Channel ));
 252
 253                 /* The sender is a member: generate extended reply */
 254                 strlcpy( the_modes, Channel_Modes( Channel ), sizeof( the_modes ));
 255                 mode_ptr = the_modes;
 256                 strcpy( the_args, "" );
 257                 while( *mode_ptr )
 258                 {
 259                         switch( *mode_ptr )
 260                         {
 261                                 case 'l':
 262                                         snprintf( argadd, sizeof( argadd ), " %ld", Channel_MaxUsers( Channel ));
 263                                         strlcat( the_args, argadd, sizeof( the_args ));
 264                                         break;
 265                                 case 'k':
 266                                         strlcat( the_args, " ", sizeof( the_args ));
 267                                         strlcat( the_args, Channel_Key( Channel ), sizeof( the_args ));
 268                                         break;
 269                         }
 270                         mode_ptr++;
 271                 }
 272                 if( the_args[0] ) strlcat( the_modes, the_args, sizeof( the_modes ));
 273
 274                 return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), the_modes );
 275         }
 276
 277         /* Is the user allowed to change modes? */
 278         if( Client_Type( Client ) == CLIENT_USER )
 279         {
 280                 /* Is the originating user on that channel? */
 281                 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 282
 283                 /* Is he channel operator? */
 284                 if( strchr( Channel_UserModes( Channel, Origin ), 'o' )) modeok = TRUE;
 285                 else modeok = FALSE;
 286                 if( Conf_OperCanMode )
 287                 {
 288                         /* auch IRC-Operatoren duerfen MODE verwenden */
 289                         if( Client_OperByMe( Origin )) modeok = TRUE;
 290                 }
 291         }
 292         else modeok = TRUE;
 293
 294         mode_arg = 1;
 295         mode_ptr = Req->argv[mode_arg];
 296         if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
 297         else arg_arg = -1;
 298
 299         /* Initial state: set or unset modes? */
 300         skiponce = FALSE;
 301         if( *mode_ptr == '-' ) set = FALSE;
 302         else if( *mode_ptr == '+' ) set = TRUE;
 303         else set = skiponce = TRUE;
 304
 305         /* Prepare reply string */
 306         if( set ) strcpy( the_modes, "+" );
 307         else strcpy( the_modes, "-" );
 308         strcpy( the_args, " " );
 309
 310         x[1] = '\0';
 311         ok = CONNECTED;
 312         while( mode_ptr )
 313         {
 314                 if( ! skiponce ) mode_ptr++;
 315                 if( ! *mode_ptr )
 316                 {
 317                         /* Try next argument if there's any */
 318                         if( arg_arg > mode_arg ) mode_arg = arg_arg;
 319                         else mode_arg++;
 320                         if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
 321                         else break;
 322                         if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
 323                         else arg_arg = -1;
 324                 }
 325                 skiponce = FALSE;
 326
 327                 switch( *mode_ptr )
 328                 {
 329                         case '+':
 330                         case '-':
 331                                 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
 332                                 {
 333                                         /* Action modifier ("+"/"-") must be changed ... */
 334                                         if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
 335                                         {
 336                                                 /* Adjust last action modifier in result */
 337                                                 the_modes[strlen( the_modes ) - 1] = *mode_ptr;
 338                                         }
 339                                         else
 340                                         {
 341                                                 /* Append modifier character to result string */
 342                                                 x[0] = *mode_ptr;
 343                                                 strlcat( the_modes, x, sizeof( the_modes ));
 344                                         }
 345                                         if( *mode_ptr == '+' ) set = TRUE;
 346                                         else set = FALSE;
 347                                 }
 348                                 continue;
 349                 }
 350
 351                 /* Are there arguments left? */
 352                 if( arg_arg >= Req->argc ) arg_arg = -1;
 353
 354                 /* Validate modes */
 355                 x[0] = '\0';
 356                 argadd[0] = '\0';
 357                 client = NULL;
 358                 switch( *mode_ptr )
 359                 {
 360                         /* --- Channel modes --- */
 361
 362                         case 'i': /* Invite only */
 363                         case 'm': /* Moderated */
 364                         case 'n': /* Only members can write */
 365                         case 't': /* Topic locked */
 366                                 if( modeok ) x[0] = *mode_ptr;
 367                                 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 368                                 break;
 369
 370                         case 'k': /* Channel key */
 371                                 if( ! set )
 372                                 {
 373                                         if( modeok ) x[0] = *mode_ptr;
 374                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 375                                         break;
 376                                 }
 377                                 if( arg_arg > mode_arg )
 378                                 {
 379                                         if( modeok )
 380                                         {
 381                                                 Channel_ModeDel( Channel, 'k' );
 382                                                 Channel_SetKey( Channel, Req->argv[arg_arg] );
 383                                                 strlcpy( argadd, Channel_Key( Channel ), sizeof( argadd ));
 384                                                 x[0] = *mode_ptr;
 385                                         }
 386                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 387                                         Req->argv[arg_arg][0] = '\0';
 388                                         arg_arg++;
 389                                 }
 390                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 391                                 break;
 392
 393                         case 'l': /* Member limit */
 394                                 if( ! set )
 395                                 {
 396                                         if( modeok ) x[0] = *mode_ptr;
 397                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 398                                         break;
 399                                 }
 400                                 if( arg_arg > mode_arg )
 401                                 {
 402                                         if( modeok )
 403                                         {
 404                                                 l = atol( Req->argv[arg_arg] );
 405                                                 if( l > 0 && l < 0xFFFF )
 406                                                 {
 407                                                         Channel_ModeDel( Channel, 'l' );
 408                                                         Channel_SetMaxUsers( Channel, l );
 409                                                         snprintf( argadd, sizeof( argadd ), "%ld", l );
 410                                                         x[0] = *mode_ptr;
 411                                                 }
 412                                         }
 413                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 414                                         Req->argv[arg_arg][0] = '\0';
 415                                         arg_arg++;
 416                                 }
 417                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 418                                 break;
 419
 420                         case 'P': /* Persistent channel */
 421                                 if( modeok )
 422                                 {
 423                                         if( set && ( ! Client_OperByMe( Client )))
 424                                         {
 425                                                 /* Only IRC operators are allowed to set P mode */
 426                                                 ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 427                                         }
 428                                         else x[0] = 'P';
 429                                 }
 430                                 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 431                                 break;
 432
 433                         /* --- Channel user modes --- */
 434
 435                         case 'o': /* Channel operator */
 436                         case 'v': /* Voice */
 437                                 if( arg_arg > mode_arg )
 438                                 {
 439                                         if( modeok )
 440                                         {
 441                                                 client = Client_Search( Req->argv[arg_arg] );
 442                                                 if( client ) x[0] = *mode_ptr;
 443                                                 else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
 444                                         }
 445                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 446                                         Req->argv[arg_arg][0] = '\0';
 447                                         arg_arg++;
 448                                 }
 449                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 450                                 break;
 451
 452                         /* --- Channel lists --- */
 453
 454                         case 'I': /* Invite lists */
 455                                 if( arg_arg > mode_arg )
 456                                 {
 457                                         /* modify list */
 458                                         if( modeok )
 459                                         {
 460                                                 if( set ) Add_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
 461                                                 else Del_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
 462                                         }
 463                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 464                                         Req->argv[arg_arg][0] = '\0';
 465                                         arg_arg++;
 466                                 }
 467                                 else Lists_ShowInvites( Origin, Channel );
 468                                 break;
 469
 470                         case 'b': /* Ban lists */
 471                                 if( arg_arg > mode_arg )
 472                                 {
 473                                         /* modify list */
 474                                         if( modeok )
 475                                         {
 476                                                 if( set ) Add_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
 477                                                 else Del_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
 478                                         }
 479                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 480                                         Req->argv[arg_arg][0] = '\0';
 481                                         arg_arg++;
 482                                 }
 483                                 else Lists_ShowBans( Origin, Channel );
 484                                 break;
 485
 486                         default:
 487                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
 488                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 489                                 x[0] = '\0';
 490                                 goto chan_exit;
 491                 }
 492                 if( ! ok ) break;
 493
 494                 /* Is there a valid mode change? */
 495                 if( ! x[0] ) continue;
 496
 497                 /* Validate target client */
 498                 if( client && ( ! Channel_IsMemberOf( Channel, client )))
 499                 {
 500                         if( ! IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( client ), Channel_Name( Channel ))) break;
 501                         continue;
 502                 }
 503
 504                 if( set )
 505                 {
 506                         /* Set mode */
 507                         if( client )
 508                         {
 509                                 /* Channel-User-Mode */
 510                                 if( Channel_UserModeAdd( Channel, client, x[0] ))
 511                                 {
 512                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 513                                         strlcat( the_args, " ", sizeof( the_args ));
 514                                         strlcat( the_modes, x, sizeof( the_modes ));
 515                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 516                                 }
 517                         }
 518                         else
 519                         {
 520                                 /* Channel-Mode */
 521                                 if( Channel_ModeAdd( Channel, x[0] ))
 522                                 {
 523                                         strlcat( the_modes, x, sizeof( the_modes ));
 524                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 525                                 }
 526                         }
 527                 }
 528                 else
 529                 {
 530                         /* Unset mode */
 531                         if( client )
 532                         {
 533                                 /* Channel-User-Mode */
 534                                 if( Channel_UserModeDel( Channel, client, x[0] ))
 535                                 {
 536                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 537                                         strlcat( the_args, " ", sizeof( the_args ));
 538                                         strlcat( the_modes, x, sizeof( the_modes ));
 539                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 540                                 }
 541                         }
 542                         else
 543                         {
 544                                 /* Channel-Mode */
 545                                 if( Channel_ModeDel( Channel, x[0] ))
 546                                 {
 547                                         strlcat( the_modes, x, sizeof( the_modes ));
 548                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 549                                 }
 550                         }
 551                 }
 552
 553                 /* Are there additional arguments to add? */
 554                 if( argadd[0] )
 555                 {
 556                         if( the_args[strlen( the_args ) - 1] != ' ' ) strlcat( the_args, " ", sizeof( the_args ));
 557                         strlcat( the_args, argadd, sizeof( the_args ));
 558                 }
 559         }
 560 chan_exit:
 561
 562         /* Are there changed modes? */
 563         if( the_modes[1] )
 564         {
 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';
 567
 568                 /* Clean up argument string if there are none */
 569                 if( ! the_args[1] ) the_args[0] = '\0';
 570
 571                 if( Client_Type( Client ) == CLIENT_SERVER )
 572                 {
 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 );
 576                 }
 577                 else
 578                 {
 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 );
 583                 }
 584         }
 585
 586         IRC_SetPenalty( Client, 1 );
 587         return CONNECTED;
 588 } /* Channel_Mode */
 589
 590
 591 GLOBAL BOOLEAN
 592 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 593 {
 594         assert( Client != NULL );
 595         assert( Req != NULL );
 596
 597         /* Falsche Anzahl Parameter? */
 598         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 599
 600         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 601         {
 602                 /* AWAY setzen */
 603                 Client_SetAway( Client, Req->argv[0] );
 604                 Client_ModeAdd( Client, 'a' );
 605                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 606                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 607         }
 608         else
 609         {
 610                 /* AWAY loeschen */
 611                 Client_ModeDel( Client, 'a' );
 612                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 613                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 614         }
 615 } /* IRC_AWAY */
 616
 617
 618 LOCAL BOOLEAN
 619 Add_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 620 {
 621         CHAR *mask;
 622         BOOLEAN already;
 623
 624         assert( Client != NULL );
 625         assert( Channel != NULL );
 626         assert( Pattern != NULL );
 627
 628         mask = Lists_MakeMask( Pattern );
 629
 630         already = Lists_IsInviteEntry( mask, Channel );
 631
 632         if( ! Lists_AddInvited( mask, Channel, FALSE )) return CONNECTED;
 633
 634         if(( Client_Type( Prefix ) == CLIENT_SERVER ) && ( already == TRUE )) return CONNECTED;
 635
 636         return Send_ListChange( "+I", Prefix, Client, Channel, mask );
 637 } /* Add_Invite */
 638
 639
 640 LOCAL BOOLEAN
 641 Add_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 642 {
 643         CHAR *mask;
 644         BOOLEAN already;
 645
 646         assert( Client != NULL );
 647         assert( Channel != NULL );
 648         assert( Pattern != NULL );
 649
 650         mask = Lists_MakeMask( Pattern );
 651
 652         already = Lists_IsBanEntry( mask, Channel );
 653
 654         if( ! Lists_AddBanned( mask, Channel )) return CONNECTED;
 655
 656         if(( Client_Type( Prefix ) == CLIENT_SERVER ) && ( already == TRUE )) return CONNECTED;
 657
 658         return Send_ListChange( "+b", Prefix, Client, Channel, mask );
 659 } /* Add_Ban */
 660
 661
 662 LOCAL BOOLEAN
 663 Del_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 664 {
 665         CHAR *mask;
 666
 667         assert( Client != NULL );
 668         assert( Channel != NULL );
 669         assert( Pattern != NULL );
 670
 671         mask = Lists_MakeMask( Pattern );
 672         Lists_DelInvited( mask, Channel );
 673         return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 674 } /* Del_Invite */
 675
 676
 677 LOCAL BOOLEAN
 678 Del_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 679 {
 680         CHAR *mask;
 681
 682         assert( Client != NULL );
 683         assert( Channel != NULL );
 684         assert( Pattern != NULL );
 685
 686         mask = Lists_MakeMask( Pattern );
 687         Lists_DelBanned( mask, Channel );
 688         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 689 } /* Del_Ban */
 690
 691
 692 LOCAL BOOLEAN
 693 Send_ListChange( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask )
 694 {
 695         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 696
 697         BOOLEAN ok;
 698
 699         if( Client_Type( Client ) == CLIENT_USER )
 700         {
 701                 /* Bestaetigung an Client */
 702                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 703         }
 704         else ok = TRUE;
 705
 706         /* an andere Server */
 707         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 708
 709         /* und lokale User im Channel */
 710         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, FALSE, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 711
 712         return ok;
 713 } /* Send_ListChange */
 714
 715
 716 /* -eof- */