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 1.38 2005/03/05 11:44:01 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         size_t len;
  95
  96         /* Is the client allowed to request or change the modes? */
  97         if( Client_Type( Client ) == CLIENT_USER )
  98         {
  99                 /* Users are only allowed to manipulate their own modes! */
 100                 if( Target != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
 101         }
 102
 103         /* Mode request: let's answer it :-) */
 104         if( Req->argc == 1 ) return IRC_WriteStrClient( Origin, RPL_UMODEIS_MSG, Client_ID( Origin ), Client_Modes( Target ));
 105
 106         mode_arg = 1;
 107         mode_ptr = Req->argv[mode_arg];
 108
 109         /* Initial state: set or unset modes? */
 110         if( *mode_ptr == '+' ) set = TRUE;
 111         else if( *mode_ptr == '-' ) set = FALSE;
 112         else return IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Origin ));
 113
 114         /* Prepare reply string */
 115         if( set ) strcpy( the_modes, "+" );
 116         else strcpy( the_modes, "-" );
 117
 118         x[1] = '\0';
 119         ok = CONNECTED;
 120         while( mode_ptr )
 121         {
 122                 mode_ptr++;
 123                 if( ! *mode_ptr )
 124                 {
 125                         /* Try next argument if there's any */
 126                         mode_arg++;
 127                         if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
 128                         else break;
 129                 }
 130
 131                 switch( *mode_ptr )
 132                 {
 133                         case '+':
 134                         case '-':
 135                                 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
 136                                 {
 137                                         /* Action modifier ("+"/"-") must be changed ... */
 138                                         len = strlen( the_modes ) - 1;
 139                                         if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' ))
 140                                         {
 141                                                 /* Adjust last action modifier in result */
 142                                                 the_modes[len] = *mode_ptr;
 143                                         }
 144                                         else
 145                                         {
 146                                                 /* Append modifier character to result string */
 147                                                 x[0] = *mode_ptr;
 148                                                 strlcat( the_modes, x, sizeof( the_modes ));
 149                                         }
 150                                         if( *mode_ptr == '+' ) set = TRUE;
 151                                         else set = FALSE;
 152                                 }
 153                                 continue;
 154                 }
 155
 156                 /* Validate modes */
 157                 x[0] = '\0';
 158                 switch( *mode_ptr )
 159                 {
 160                         case 'i': /* Invisible */
 161                         case 's': /* Server messages */
 162                                 x[0] = *mode_ptr;
 163                                 break;
 164
 165                         case 'a': /* Away */
 166                                 if( Client_Type( Client ) == CLIENT_SERVER )
 167                                 {
 168                                         x[0] = 'a';
 169                                         Client_SetAway( Client, DEFAULT_AWAY_MSG );
 170                                 }
 171                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 172                                 break;
 173
 174                         case 'o': /* IRC operator (only unsettable!) */
 175                                 if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
 176                                 {
 177                                         Client_SetOperByMe( Target, FALSE );
 178                                         x[0] = 'o';
 179                                 }
 180                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 181                                 break;
 182
 183                         case 'r': /* Restricted (only settable) */
 184                                 if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
 185                                 else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
 186                                 break;
 187
 188                         default:
 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 );
 191                                 x[0] = '\0';
 192                                 goto client_exit;
 193                 }
 194                 if( ! ok ) break;
 195
 196                 /* Is there a valid mode change? */
 197                 if( ! x[0] ) continue;
 198
 199                 if( set )
 200                 {
 201                         /* Set mode */
 202                         if( Client_ModeAdd( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 203
 204                 }
 205                 else
 206                 {
 207                         /* Unset mode */
 208                         if( Client_ModeDel( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 209                 }
 210         }
 211 client_exit:
 212
 213         /* Are there changed modes? */
 214         if( the_modes[1] )
 215         {
 216                 /* Remoce needless action modifier characters */
 217                 len = strlen( the_modes ) - 1;
 218                 if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' )) the_modes[len] = '\0';
 219
 220                 if( Client_Type( Client ) == CLIENT_SERVER )
 221                 {
 222                         /* Forward modes to other servers */
 223                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 224                 }
 225                 else
 226                 {
 227                         /* Send reply to client and inform other servers */
 228                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 229                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 230                 }
 231                 Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
 232         }
 233
 234         IRC_SetPenalty( Client, 1 );
 235         return ok;
 236 } /* Client_Mode */
 237
 238
 239 LOCAL BOOLEAN
 240 Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
 241 {
 242         /* Handle channel and channel-user modes */
 243
 244         CHAR the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr;
 245         BOOLEAN ok, set, modeok, skiponce;
 246         INT mode_arg, arg_arg;
 247         CLIENT *client;
 248         LONG l;
 249         size_t len;
 250
 251         /* Mode request: let's answer it :-) */
 252         if( Req->argc == 1 )
 253         {
 254                 /* Member or not? -- That's the question! */
 255                 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), Channel_Modes( Channel ));
 256
 257                 /* The sender is a member: generate extended reply */
 258                 strlcpy( the_modes, Channel_Modes( Channel ), sizeof( the_modes ));
 259                 mode_ptr = the_modes;
 260                 strcpy( the_args, "" );
 261                 while( *mode_ptr )
 262                 {
 263                         switch( *mode_ptr )
 264                         {
 265                                 case 'l':
 266                                         snprintf( argadd, sizeof( argadd ), " %ld", Channel_MaxUsers( Channel ));
 267                                         strlcat( the_args, argadd, sizeof( the_args ));
 268                                         break;
 269                                 case 'k':
 270                                         strlcat( the_args, " ", sizeof( the_args ));
 271                                         strlcat( the_args, Channel_Key( Channel ), sizeof( the_args ));
 272                                         break;
 273                         }
 274                         mode_ptr++;
 275                 }
 276                 if( the_args[0] ) strlcat( the_modes, the_args, sizeof( the_modes ));
 277
 278                 return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), the_modes );
 279         }
 280
 281         /* Is the user allowed to change modes? */
 282         if( Client_Type( Client ) == CLIENT_USER )
 283         {
 284                 /* Is the originating user on that channel? */
 285                 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 286
 287                 /* Is he channel operator? */
 288                 if( strchr( Channel_UserModes( Channel, Origin ), 'o' )) modeok = TRUE;
 289                 else modeok = FALSE;
 290                 if( Conf_OperCanMode )
 291                 {
 292                         /* auch IRC-Operatoren duerfen MODE verwenden */
 293                         if( Client_OperByMe( Origin )) modeok = TRUE;
 294                 }
 295         }
 296         else modeok = TRUE;
 297
 298         mode_arg = 1;
 299         mode_ptr = Req->argv[mode_arg];
 300         if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
 301         else arg_arg = -1;
 302
 303         /* Initial state: set or unset modes? */
 304         skiponce = FALSE;
 305         if( *mode_ptr == '-' ) set = FALSE;
 306         else if( *mode_ptr == '+' ) set = TRUE;
 307         else set = skiponce = TRUE;
 308
 309         /* Prepare reply string */
 310         if( set ) strcpy( the_modes, "+" );
 311         else strcpy( the_modes, "-" );
 312         strcpy( the_args, " " );
 313
 314         x[1] = '\0';
 315         ok = CONNECTED;
 316         while( mode_ptr )
 317         {
 318                 if( ! skiponce ) mode_ptr++;
 319                 if( ! *mode_ptr )
 320                 {
 321                         /* Try next argument if there's any */
 322                         if( arg_arg > mode_arg ) mode_arg = arg_arg;
 323                         else mode_arg++;
 324                         if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
 325                         else break;
 326                         if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
 327                         else arg_arg = -1;
 328                 }
 329                 skiponce = FALSE;
 330
 331                 switch( *mode_ptr )
 332                 {
 333                         case '+':
 334                         case '-':
 335                                 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
 336                                 {
 337                                         /* Action modifier ("+"/"-") must be changed ... */
 338                                         len = strlen( the_modes ) - 1;
 339                                         if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' ))
 340                                         {
 341                                                 /* Adjust last action modifier in result */
 342                                                 the_modes[len] = *mode_ptr;
 343                                         }
 344                                         else
 345                                         {
 346                                                 /* Append modifier character to result string */
 347                                                 x[0] = *mode_ptr;
 348                                                 strlcat( the_modes, x, sizeof( the_modes ));
 349                                         }
 350                                         if( *mode_ptr == '+' ) set = TRUE;
 351                                         else set = FALSE;
 352                                 }
 353                                 continue;
 354                 }
 355
 356                 /* Are there arguments left? */
 357                 if( arg_arg >= Req->argc ) arg_arg = -1;
 358
 359                 /* Validate modes */
 360                 x[0] = '\0';
 361                 argadd[0] = '\0';
 362                 client = NULL;
 363                 switch( *mode_ptr )
 364                 {
 365                         /* --- Channel modes --- */
 366
 367                         case 'i': /* Invite only */
 368                         case 'm': /* Moderated */
 369                         case 'n': /* Only members can write */
 370                         case 's': /* Secret channel */
 371                         case 't': /* Topic locked */
 372                                 if( modeok ) x[0] = *mode_ptr;
 373                                 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 374                                 break;
 375
 376                         case 'k': /* Channel key */
 377                                 if( ! set )
 378                                 {
 379                                         if( modeok ) x[0] = *mode_ptr;
 380                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 381                                         break;
 382                                 }
 383                                 if( arg_arg > mode_arg )
 384                                 {
 385                                         if( modeok )
 386                                         {
 387                                                 Channel_ModeDel( Channel, 'k' );
 388                                                 Channel_SetKey( Channel, Req->argv[arg_arg] );
 389                                                 strlcpy( argadd, Channel_Key( Channel ), sizeof( argadd ));
 390                                                 x[0] = *mode_ptr;
 391                                         }
 392                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 393                                         Req->argv[arg_arg][0] = '\0';
 394                                         arg_arg++;
 395                                 }
 396                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 397                                 break;
 398
 399                         case 'l': /* Member limit */
 400                                 if( ! set )
 401                                 {
 402                                         if( modeok ) x[0] = *mode_ptr;
 403                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 404                                         break;
 405                                 }
 406                                 if( arg_arg > mode_arg )
 407                                 {
 408                                         if( modeok )
 409                                         {
 410                                                 l = atol( Req->argv[arg_arg] );
 411                                                 if( l > 0 && l < 0xFFFF )
 412                                                 {
 413                                                         Channel_ModeDel( Channel, 'l' );
 414                                                         Channel_SetMaxUsers( Channel, l );
 415                                                         snprintf( argadd, sizeof( argadd ), "%ld", l );
 416                                                         x[0] = *mode_ptr;
 417                                                 }
 418                                         }
 419                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 420                                         Req->argv[arg_arg][0] = '\0';
 421                                         arg_arg++;
 422                                 }
 423                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 424                                 break;
 425
 426                         case 'P': /* Persistent channel */
 427                                 if( modeok )
 428                                 {
 429                                         if( set && ( ! Client_OperByMe( Client )))
 430                                         {
 431                                                 /* Only IRC operators are allowed to set P mode */
 432                                                 ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 433                                         }
 434                                         else x[0] = 'P';
 435                                 }
 436                                 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 437                                 break;
 438
 439                         /* --- Channel user modes --- */
 440
 441                         case 'o': /* Channel operator */
 442                         case 'v': /* Voice */
 443                                 if( arg_arg > mode_arg )
 444                                 {
 445                                         if( modeok )
 446                                         {
 447                                                 client = Client_Search( Req->argv[arg_arg] );
 448                                                 if( client ) x[0] = *mode_ptr;
 449                                                 else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
 450                                         }
 451                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 452                                         Req->argv[arg_arg][0] = '\0';
 453                                         arg_arg++;
 454                                 }
 455                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 456                                 break;
 457
 458                         /* --- Channel lists --- */
 459
 460                         case 'I': /* Invite lists */
 461                                 if( arg_arg > mode_arg )
 462                                 {
 463                                         /* modify list */
 464                                         if( modeok )
 465                                         {
 466                                                 if( set ) Add_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
 467                                                 else Del_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
 468                                         }
 469                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 470                                         Req->argv[arg_arg][0] = '\0';
 471                                         arg_arg++;
 472                                 }
 473                                 else Lists_ShowInvites( Origin, Channel );
 474                                 break;
 475
 476                         case 'b': /* Ban lists */
 477                                 if( arg_arg > mode_arg )
 478                                 {
 479                                         /* modify list */
 480                                         if( modeok )
 481                                         {
 482                                                 if( set ) Add_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
 483                                                 else Del_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
 484                                         }
 485                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 486                                         Req->argv[arg_arg][0] = '\0';
 487                                         arg_arg++;
 488                                 }
 489                                 else Lists_ShowBans( Origin, Channel );
 490                                 break;
 491
 492                         default:
 493                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
 494                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 495                                 x[0] = '\0';
 496                                 goto chan_exit;
 497                 }
 498                 if( ! ok ) break;
 499
 500                 /* Is there a valid mode change? */
 501                 if( ! x[0] ) continue;
 502
 503                 /* Validate target client */
 504                 if( client && ( ! Channel_IsMemberOf( Channel, client )))
 505                 {
 506                         if( ! IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( client ), Channel_Name( Channel ))) break;
 507                         continue;
 508                 }
 509
 510                 if( set )
 511                 {
 512                         /* Set mode */
 513                         if( client )
 514                         {
 515                                 /* Channel-User-Mode */
 516                                 if( Channel_UserModeAdd( Channel, client, x[0] ))
 517                                 {
 518                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 519                                         strlcat( the_args, " ", sizeof( the_args ));
 520                                         strlcat( the_modes, x, sizeof( the_modes ));
 521                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 522                                 }
 523                         }
 524                         else
 525                         {
 526                                 /* Channel-Mode */
 527                                 if( Channel_ModeAdd( Channel, x[0] ))
 528                                 {
 529                                         strlcat( the_modes, x, sizeof( the_modes ));
 530                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 531                                 }
 532                         }
 533                 }
 534                 else
 535                 {
 536                         /* Unset mode */
 537                         if( client )
 538                         {
 539                                 /* Channel-User-Mode */
 540                                 if( Channel_UserModeDel( Channel, client, x[0] ))
 541                                 {
 542                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 543                                         strlcat( the_args, " ", sizeof( the_args ));
 544                                         strlcat( the_modes, x, sizeof( the_modes ));
 545                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 546                                 }
 547                         }
 548                         else
 549                         {
 550                                 /* Channel-Mode */
 551                                 if( Channel_ModeDel( Channel, x[0] ))
 552                                 {
 553                                         strlcat( the_modes, x, sizeof( the_modes ));
 554                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 555                                 }
 556                         }
 557                 }
 558
 559                 /* Are there additional arguments to add? */
 560                 if( argadd[0] )
 561                 {
 562                         len = strlen( the_args ) - 1;
 563                         if( the_args[len] != ' ' ) strlcat( the_args, " ", sizeof( the_args ));
 564                         strlcat( the_args, argadd, sizeof( the_args ));
 565                 }
 566         }
 567 chan_exit:
 568
 569         /* Are there changed modes? */
 570         if( the_modes[1] )
 571         {
 572                 /* Clean up mode string */
 573                 len = strlen( the_modes ) - 1;
 574                 if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' )) the_modes[len] = '\0';
 575
 576                 /* Clean up argument string if there are none */
 577                 if( ! the_args[1] ) the_args[0] = '\0';
 578
 579                 if( Client_Type( Client ) == CLIENT_SERVER )
 580                 {
 581                         /* Forward mode changes to channel users and other servers */
 582                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 583                         IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 584                 }
 585                 else
 586                 {
 587                         /* Send reply to client and inform other servers and channel users */
 588                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 589                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 590                         IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 591                 }
 592         }
 593
 594         IRC_SetPenalty( Client, 1 );
 595         return CONNECTED;
 596 } /* Channel_Mode */
 597
 598
 599 GLOBAL BOOLEAN
 600 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 601 {
 602         assert( Client != NULL );
 603         assert( Req != NULL );
 604
 605         /* Falsche Anzahl Parameter? */
 606         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 607
 608         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 609         {
 610                 /* AWAY setzen */
 611                 Client_SetAway( Client, Req->argv[0] );
 612                 Client_ModeAdd( Client, 'a' );
 613                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 614                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 615         }
 616         else
 617         {
 618                 /* AWAY loeschen */
 619                 Client_ModeDel( Client, 'a' );
 620                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 621                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 622         }
 623 } /* IRC_AWAY */
 624
 625
 626 LOCAL BOOLEAN
 627 Add_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 628 {
 629         CHAR *mask;
 630         BOOLEAN already;
 631
 632         assert( Client != NULL );
 633         assert( Channel != NULL );
 634         assert( Pattern != NULL );
 635
 636         mask = Lists_MakeMask( Pattern );
 637
 638         already = Lists_IsInviteEntry( mask, Channel );
 639
 640         if( ! Lists_AddInvited( mask, Channel, FALSE )) return CONNECTED;
 641
 642         if(( Client_Type( Prefix ) == CLIENT_SERVER ) && ( already == TRUE )) return CONNECTED;
 643
 644         return Send_ListChange( "+I", Prefix, Client, Channel, mask );
 645 } /* Add_Invite */
 646
 647
 648 LOCAL BOOLEAN
 649 Add_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 650 {
 651         CHAR *mask;
 652         BOOLEAN already;
 653
 654         assert( Client != NULL );
 655         assert( Channel != NULL );
 656         assert( Pattern != NULL );
 657
 658         mask = Lists_MakeMask( Pattern );
 659
 660         already = Lists_IsBanEntry( mask, Channel );
 661
 662         if( ! Lists_AddBanned( mask, Channel )) return CONNECTED;
 663
 664         if(( Client_Type( Prefix ) == CLIENT_SERVER ) && ( already == TRUE )) return CONNECTED;
 665
 666         return Send_ListChange( "+b", Prefix, Client, Channel, mask );
 667 } /* Add_Ban */
 668
 669
 670 LOCAL BOOLEAN
 671 Del_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 672 {
 673         CHAR *mask;
 674
 675         assert( Client != NULL );
 676         assert( Channel != NULL );
 677         assert( Pattern != NULL );
 678
 679         mask = Lists_MakeMask( Pattern );
 680         Lists_DelInvited( mask, Channel );
 681         return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 682 } /* Del_Invite */
 683
 684
 685 LOCAL BOOLEAN
 686 Del_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )
 687 {
 688         CHAR *mask;
 689
 690         assert( Client != NULL );
 691         assert( Channel != NULL );
 692         assert( Pattern != NULL );
 693
 694         mask = Lists_MakeMask( Pattern );
 695         Lists_DelBanned( mask, Channel );
 696         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 697 } /* Del_Ban */
 698
 699
 700 LOCAL BOOLEAN
 701 Send_ListChange( CHAR *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Mask )
 702 {
 703         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 704
 705         BOOLEAN ok;
 706
 707         if( Client_Type( Client ) == CLIENT_USER )
 708         {
 709                 /* Bestaetigung an Client */
 710                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 711         }
 712         else ok = TRUE;
 713
 714         /* an andere Server */
 715         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 716
 717         /* und lokale User im Channel */
 718         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, FALSE, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 719
 720         return ok;
 721 } /* Send_ListChange */
 722
 723
 724 /* -eof- */