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 1.50 2007/10/14 12:08:57 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 "defines.h"
  26 #include "conn.h"
  27 #include "client.h"
  28 #include "channel.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 static bool Client_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target ));
  42 static bool Channel_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel ));
  43
  44 static bool Add_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern ));
  45 static bool Add_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern ));
  46
  47 static bool Del_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern ));
  48 static bool Del_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern ));
  49
  50 static bool Send_ListChange PARAMS(( char *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Mask ));
  51
  52
  53 GLOBAL bool
  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 = NULL; chan = NULL;
  75         if (Client_IsValidNick(Req->argv[0]))
  76                 cl = Client_Search(Req->argv[0]);
  77         if (Channel_IsValidName(Req->argv[0]))
  78                 chan = Channel_Search(Req->argv[0]);
  79
  80         if (cl)
  81                 return Client_Mode(Client, Req, origin, cl);
  82         if (chan)
  83                 return Channel_Mode(Client, Req, origin, chan);
  84
  85         /* No target found! */
  86         return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
  87                         Client_ID(Client), Req->argv[0]);
  88 } /* IRC_MODE */
  89
  90
  91 static bool
  92 Client_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target )
  93 {
  94         /* Handle client mode requests */
  95
  96         char the_modes[COMMAND_LEN], x[2], *mode_ptr;
  97         bool ok, set;
  98         int mode_arg;
  99         size_t len;
 100
 101         /* Is the client allowed to request or change the modes? */
 102         if( Client_Type( Client ) == CLIENT_USER )
 103         {
 104                 /* Users are only allowed to manipulate their own modes! */
 105                 if( Target != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
 106         }
 107
 108         /* Mode request: let's answer it :-) */
 109         if( Req->argc == 1 ) return IRC_WriteStrClient( Origin, RPL_UMODEIS_MSG, Client_ID( Origin ), Client_Modes( Target ));
 110
 111         mode_arg = 1;
 112         mode_ptr = Req->argv[mode_arg];
 113
 114         /* Initial state: set or unset modes? */
 115         if( *mode_ptr == '+' ) set = true;
 116         else if( *mode_ptr == '-' ) set = false;
 117         else return IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Origin ));
 118
 119         /* Prepare reply string */
 120         if( set ) strcpy( the_modes, "+" );
 121         else strcpy( the_modes, "-" );
 122
 123         x[1] = '\0';
 124         ok = CONNECTED;
 125         while( mode_ptr )
 126         {
 127                 mode_ptr++;
 128                 if( ! *mode_ptr )
 129                 {
 130                         /* Try next argument if there's any */
 131                         mode_arg++;
 132                         if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
 133                         else break;
 134                 }
 135
 136                 switch( *mode_ptr )
 137                 {
 138                         case '+':
 139                         case '-':
 140                                 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
 141                                 {
 142                                         /* Action modifier ("+"/"-") must be changed ... */
 143                                         len = strlen( the_modes ) - 1;
 144                                         if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' ))
 145                                         {
 146                                                 /* Adjust last action modifier in result */
 147                                                 the_modes[len] = *mode_ptr;
 148                                         }
 149                                         else
 150                                         {
 151                                                 /* Append modifier character to result string */
 152                                                 x[0] = *mode_ptr;
 153                                                 strlcat( the_modes, x, sizeof( the_modes ));
 154                                         }
 155                                         if( *mode_ptr == '+' ) set = true;
 156                                         else set = false;
 157                                 }
 158                                 continue;
 159                 }
 160
 161                 /* Validate modes */
 162                 x[0] = '\0';
 163                 switch( *mode_ptr )
 164                 {
 165                         case 'i': /* Invisible */
 166                         case 's': /* Server messages */
 167                         case 'w': /* Wallops messages */
 168                                 x[0] = *mode_ptr;
 169                                 break;
 170
 171                         case 'a': /* Away */
 172                                 if( Client_Type( Client ) == CLIENT_SERVER )
 173                                 {
 174                                         x[0] = 'a';
 175                                         Client_SetAway( Origin, DEFAULT_AWAY_MSG );
 176                                 }
 177                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 178                                 break;
 179
 180                         case 'o': /* IRC operator (only unsettable!) */
 181                                 if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
 182                                 {
 183                                         Client_SetOperByMe( Target, false );
 184                                         x[0] = 'o';
 185                                 }
 186                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 187                                 break;
 188
 189                         case 'r': /* Restricted (only settable) */
 190                                 if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
 191                                 else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
 192                                 break;
 193
 194                         default:
 195                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
 196                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 197                                 x[0] = '\0';
 198                                 goto client_exit;
 199                 }
 200                 if( ! ok ) break;
 201
 202                 /* Is there a valid mode change? */
 203                 if( ! x[0] ) continue;
 204
 205                 if( set )
 206                 {
 207                         /* Set mode */
 208                         if( Client_ModeAdd( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 209
 210                 }
 211                 else
 212                 {
 213                         /* Unset mode */
 214                         if( Client_ModeDel( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 215                 }
 216         }
 217 client_exit:
 218
 219         /* Are there changed modes? */
 220         if( the_modes[1] )
 221         {
 222                 /* Remoce needless action modifier characters */
 223                 len = strlen( the_modes ) - 1;
 224                 if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' )) the_modes[len] = '\0';
 225
 226                 if( Client_Type( Client ) == CLIENT_SERVER )
 227                 {
 228                         /* Forward modes to other servers */
 229                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 230                 }
 231                 else
 232                 {
 233                         /* Send reply to client and inform other servers */
 234                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 235                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 236                 }
 237                 Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
 238         }
 239
 240         IRC_SetPenalty( Client, 1 );
 241         return ok;
 242 } /* Client_Mode */
 243
 244
 245 static bool
 246 Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
 247 {
 248         /* Handle channel and channel-user modes */
 249
 250         char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr;
 251         bool ok, set, modeok = false, skiponce, use_servermode = false;
 252         int mode_arg, arg_arg;
 253         CLIENT *client;
 254         long l;
 255         size_t len;
 256
 257         /* Mode request: let's answer it :-) */
 258         if( Req->argc == 1 )
 259         {
 260                 /* Member or not? -- That's the question! */
 261                 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), Channel_Modes( Channel ));
 262
 263                 /* The sender is a member: generate extended reply */
 264                 strlcpy( the_modes, Channel_Modes( Channel ), sizeof( the_modes ));
 265                 mode_ptr = the_modes;
 266                 the_args[0] = '\0';
 267                 while( *mode_ptr )
 268                 {
 269                         switch( *mode_ptr )
 270                         {
 271                                 case 'l':
 272                                         snprintf( argadd, sizeof( argadd ), " %lu", Channel_MaxUsers( Channel ));
 273                                         strlcat( the_args, argadd, sizeof( the_args ));
 274                                         break;
 275                                 case 'k':
 276                                         strlcat( the_args, " ", sizeof( the_args ));
 277                                         strlcat( the_args, Channel_Key( Channel ), sizeof( the_args ));
 278                                         break;
 279                         }
 280                         mode_ptr++;
 281                 }
 282                 if( the_args[0] ) strlcat( the_modes, the_args, sizeof( the_modes ));
 283
 284                 return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), the_modes );
 285         }
 286
 287         /* Is the user allowed to change modes? */
 288         if( Client_Type( Client ) == CLIENT_USER )
 289         {
 290                 /* Is the originating user on that channel? */
 291                 if( ! Channel_IsMemberOf( Channel, Origin )) return IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 292
 293                 /* Is he channel operator? */
 294                 if( strchr( Channel_UserModes( Channel, Origin ), 'o' )) modeok = true;
 295                 else if( Conf_OperCanMode )
 296                 {
 297                         /* IRC-Operators can use MODE as well */
 298                         if( Client_OperByMe( Origin )) {
 299                                 modeok = true;
 300                                 if ( Conf_OperServerMode ) use_servermode = true; /* Change Origin to Server */
 301                         }
 302                 }
 303         }
 304         else modeok = true;
 305
 306         mode_arg = 1;
 307         mode_ptr = Req->argv[mode_arg];
 308         if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
 309         else arg_arg = -1;
 310
 311         /* Initial state: set or unset modes? */
 312         skiponce = false;
 313         if( *mode_ptr == '-' ) set = false;
 314         else if( *mode_ptr == '+' ) set = true;
 315         else set = skiponce = true;
 316
 317         /* Prepare reply string */
 318         if( set ) strcpy( the_modes, "+" );
 319         else strcpy( the_modes, "-" );
 320         strcpy( the_args, " " );
 321
 322         x[1] = '\0';
 323         ok = CONNECTED;
 324         while( mode_ptr )
 325         {
 326                 if( ! skiponce ) mode_ptr++;
 327                 if( ! *mode_ptr )
 328                 {
 329                         /* Try next argument if there's any */
 330                         if( arg_arg > mode_arg ) mode_arg = arg_arg;
 331                         else mode_arg++;
 332                         if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
 333                         else break;
 334                         if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
 335                         else arg_arg = -1;
 336                 }
 337                 skiponce = false;
 338
 339                 switch( *mode_ptr )
 340                 {
 341                         case '+':
 342                         case '-':
 343                                 if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
 344                                 {
 345                                         /* Action modifier ("+"/"-") must be changed ... */
 346                                         len = strlen( the_modes ) - 1;
 347                                         if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' ))
 348                                         {
 349                                                 /* Adjust last action modifier in result */
 350                                                 the_modes[len] = *mode_ptr;
 351                                         }
 352                                         else
 353                                         {
 354                                                 /* Append modifier character to result string */
 355                                                 x[0] = *mode_ptr;
 356                                                 strlcat( the_modes, x, sizeof( the_modes ));
 357                                         }
 358                                         if( *mode_ptr == '+' ) set = true;
 359                                         else set = false;
 360                                 }
 361                                 continue;
 362                 }
 363
 364                 /* Are there arguments left? */
 365                 if( arg_arg >= Req->argc ) arg_arg = -1;
 366
 367                 /* Validate modes */
 368                 x[0] = '\0';
 369                 argadd[0] = '\0';
 370                 client = NULL;
 371                 switch( *mode_ptr )
 372                 {
 373                         /* --- Channel modes --- */
 374
 375                         case 'i': /* Invite only */
 376                         case 'm': /* Moderated */
 377                         case 'n': /* Only members can write */
 378                         case 's': /* Secret channel */
 379                         case 't': /* Topic locked */
 380                                 if( modeok ) x[0] = *mode_ptr;
 381                                 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 382                                 break;
 383
 384                         case 'k': /* Channel key */
 385                                 if( ! set )
 386                                 {
 387                                         if( modeok ) x[0] = *mode_ptr;
 388                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 389                                         break;
 390                                 }
 391                                 if( arg_arg > mode_arg )
 392                                 {
 393                                         if( modeok )
 394                                         {
 395                                                 Channel_ModeDel( Channel, 'k' );
 396                                                 Channel_SetKey( Channel, Req->argv[arg_arg] );
 397                                                 strlcpy( argadd, Channel_Key( Channel ), sizeof( argadd ));
 398                                                 x[0] = *mode_ptr;
 399                                         }
 400                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 401                                         Req->argv[arg_arg][0] = '\0';
 402                                         arg_arg++;
 403                                 }
 404                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 405                                 break;
 406
 407                         case 'l': /* Member limit */
 408                                 if( ! set )
 409                                 {
 410                                         if( modeok ) x[0] = *mode_ptr;
 411                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 412                                         break;
 413                                 }
 414                                 if( arg_arg > mode_arg )
 415                                 {
 416                                         if( modeok )
 417                                         {
 418                                                 l = atol( Req->argv[arg_arg] );
 419                                                 if( l > 0 && l < 0xFFFF )
 420                                                 {
 421                                                         Channel_ModeDel( Channel, 'l' );
 422                                                         Channel_SetMaxUsers( Channel, l );
 423                                                         snprintf( argadd, sizeof( argadd ), "%ld", l );
 424                                                         x[0] = *mode_ptr;
 425                                                 }
 426                                         }
 427                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 428                                         Req->argv[arg_arg][0] = '\0';
 429                                         arg_arg++;
 430                                 }
 431                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 432                                 break;
 433
 434                         case 'P': /* Persistent channel */
 435                                 if (modeok) {
 436                                         /* Only IRC operators are allowed to
 437                                          * set the 'P' channel mode! */
 438                                         if (set && ! (Client_OperByMe(Client)
 439                                             || Client_Type(Client) == CLIENT_SERVER)) {
 440                                                 ok = IRC_WriteStrClient(Origin,
 441                                                         ERR_NOPRIVILEGES_MSG,
 442                                                         Client_ID(Origin));
 443                                         } else
 444                                                 x[0] = 'P';
 445                                 } else
 446                                         ok = IRC_WriteStrClient(Origin,
 447                                                 ERR_CHANOPRIVSNEEDED_MSG,
 448                                                 Client_ID(Origin),
 449                                                 Channel_Name(Channel));
 450                                 break;
 451
 452                         /* --- Channel user modes --- */
 453
 454                         case 'o': /* Channel operator */
 455                         case 'v': /* Voice */
 456                                 if( arg_arg > mode_arg )
 457                                 {
 458                                         if( modeok )
 459                                         {
 460                                                 client = Client_Search( Req->argv[arg_arg] );
 461                                                 if( client ) x[0] = *mode_ptr;
 462                                                 else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
 463                                         }
 464                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 465                                         Req->argv[arg_arg][0] = '\0';
 466                                         arg_arg++;
 467                                 }
 468                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 469                                 break;
 470
 471                         /* --- Channel lists --- */
 472
 473                         case 'I': /* Invite lists */
 474                                 if( arg_arg > mode_arg )
 475                                 {
 476                                         /* modify list */
 477                                         if( modeok )
 478                                         {
 479                                                 if( set ) Add_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
 480                                                 else Del_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
 481                                         }
 482                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 483                                         Req->argv[arg_arg][0] = '\0';
 484                                         arg_arg++;
 485                                 }
 486                                 else Channel_ShowInvites( Origin, Channel );
 487                                 break;
 488
 489                         case 'b': /* Ban lists */
 490                                 if( arg_arg > mode_arg )
 491                                 {
 492                                         /* modify list */
 493                                         if( modeok )
 494                                         {
 495                                                 if( set ) Add_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
 496                                                 else Del_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
 497                                         }
 498                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 499                                         Req->argv[arg_arg][0] = '\0';
 500                                         arg_arg++;
 501                                 }
 502                                 else Channel_ShowBans( Origin, Channel );
 503                                 break;
 504
 505                         default:
 506                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
 507                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 508                                 x[0] = '\0';
 509                                 goto chan_exit;
 510                 }
 511                 if( ! ok ) break;
 512
 513                 /* Is there a valid mode change? */
 514                 if( ! x[0] ) continue;
 515
 516                 /* Validate target client */
 517                 if( client && ( ! Channel_IsMemberOf( Channel, client )))
 518                 {
 519                         if( ! IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( client ), Channel_Name( Channel ))) break;
 520                         continue;
 521                 }
 522
 523                 if( set )
 524                 {
 525                         /* Set mode */
 526                         if( client )
 527                         {
 528                                 /* Channel-User-Mode */
 529                                 if( Channel_UserModeAdd( Channel, client, x[0] ))
 530                                 {
 531                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 532                                         strlcat( the_args, " ", sizeof( the_args ));
 533                                         strlcat( the_modes, x, sizeof( the_modes ));
 534                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 535                                 }
 536                         }
 537                         else
 538                         {
 539                                 /* Channel-Mode */
 540                                 if( Channel_ModeAdd( Channel, x[0] ))
 541                                 {
 542                                         strlcat( the_modes, x, sizeof( the_modes ));
 543                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 544                                 }
 545                         }
 546                 }
 547                 else
 548                 {
 549                         /* Unset mode */
 550                         if( client )
 551                         {
 552                                 /* Channel-User-Mode */
 553                                 if( Channel_UserModeDel( Channel, client, x[0] ))
 554                                 {
 555                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 556                                         strlcat( the_args, " ", sizeof( the_args ));
 557                                         strlcat( the_modes, x, sizeof( the_modes ));
 558                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 559                                 }
 560                         }
 561                         else
 562                         {
 563                                 /* Channel-Mode */
 564                                 if( Channel_ModeDel( Channel, x[0] ))
 565                                 {
 566                                         strlcat( the_modes, x, sizeof( the_modes ));
 567                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 568                                 }
 569                         }
 570                 }
 571
 572                 /* Are there additional arguments to add? */
 573                 if( argadd[0] )
 574                 {
 575                         len = strlen( the_args ) - 1;
 576                         if( the_args[len] != ' ' ) strlcat( the_args, " ", sizeof( the_args ));
 577                         strlcat( the_args, argadd, sizeof( the_args ));
 578                 }
 579         }
 580 chan_exit:
 581
 582         /* Are there changed modes? */
 583         if( the_modes[1] )
 584         {
 585                 /* Clean up mode string */
 586                 len = strlen( the_modes ) - 1;
 587                 if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' )) the_modes[len] = '\0';
 588
 589                 /* Clean up argument string if there are none */
 590                 if( ! the_args[1] ) the_args[0] = '\0';
 591
 592                 if( Client_Type( Client ) == CLIENT_SERVER )
 593                 {
 594                         /* Forward mode changes to channel users and other servers */
 595                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 596                         IRC_WriteStrChannelPrefix( Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 597                 }
 598                 else
 599                 {
 600                         if ( use_servermode ) Origin = Client_ThisServer();
 601
 602                         /* Send reply to client and inform other servers and channel users */
 603                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 604                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 605                         IRC_WriteStrChannelPrefix( Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 606                 }
 607         }
 608
 609         IRC_SetPenalty( Client, 1 );
 610         return CONNECTED;
 611 } /* Channel_Mode */
 612
 613
 614 GLOBAL bool
 615 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 616 {
 617         assert( Client != NULL );
 618         assert( Req != NULL );
 619
 620         /* Falsche Anzahl Parameter? */
 621         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 622
 623         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 624         {
 625                 /* AWAY setzen */
 626                 Client_SetAway( Client, Req->argv[0] );
 627                 Client_ModeAdd( Client, 'a' );
 628                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 629                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 630         }
 631         else
 632         {
 633                 /* AWAY loeschen */
 634                 Client_ModeDel( Client, 'a' );
 635                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 636                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 637         }
 638 } /* IRC_AWAY */
 639
 640
 641 static bool
 642 Add_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern )
 643 {
 644         char *mask;
 645         bool already;
 646
 647         assert( Client != NULL );
 648         assert( Channel != NULL );
 649         assert( Pattern != NULL );
 650
 651         mask = Lists_MakeMask( Pattern );
 652
 653         already = Lists_CheckDupeMask(Channel_GetListInvites(Channel), mask );
 654         if (!already) {
 655                 if( ! Channel_AddInvite(Channel, mask, false ))
 656                         return CONNECTED;
 657         }
 658         if ( already && ( Client_Type( Prefix ) == CLIENT_SERVER ))
 659                 return CONNECTED;
 660
 661         return Send_ListChange( "+I", Prefix, Client, Channel, mask );
 662 } /* Add_Invite */
 663
 664
 665 static bool
 666 Add_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern )
 667 {
 668         char *mask;
 669         bool already;
 670
 671         assert( Client != NULL );
 672         assert( Channel != NULL );
 673         assert( Pattern != NULL );
 674
 675         mask = Lists_MakeMask( Pattern );
 676
 677         already = Lists_CheckDupeMask(Channel_GetListBans(Channel), mask );
 678         if (!already) {
 679                 if( ! Channel_AddBan(Channel, mask))
 680                         return CONNECTED;
 681         }
 682         if ( already && ( Client_Type( Prefix ) == CLIENT_SERVER ))
 683                 return CONNECTED;
 684
 685         return Send_ListChange( "+b", Prefix, Client, Channel, mask );
 686 } /* Add_Ban */
 687
 688
 689 static bool
 690 Del_Invite( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern )
 691 {
 692         char *mask;
 693
 694         assert( Client != NULL );
 695         assert( Channel != NULL );
 696         assert( Pattern != NULL );
 697
 698         mask = Lists_MakeMask( Pattern );
 699         Lists_Del(Channel_GetListInvites(Channel), mask);
 700         return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 701 } /* Del_Invite */
 702
 703
 704 static bool
 705 Del_Ban( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Pattern )
 706 {
 707         char *mask;
 708
 709         assert( Client != NULL );
 710         assert( Channel != NULL );
 711         assert( Pattern != NULL );
 712
 713         mask = Lists_MakeMask( Pattern );
 714         Lists_Del(Channel_GetListBans(Channel), mask);
 715         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 716 } /* Del_Ban */
 717
 718
 719 static bool
 720 Send_ListChange( char *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, char *Mask )
 721 {
 722         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 723
 724         bool ok;
 725
 726         if( Client_Type( Client ) == CLIENT_USER )
 727         {
 728                 /* Bestaetigung an Client */
 729                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 730         }
 731         else ok = true;
 732
 733         /* an andere Server */
 734         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 735
 736         /* und lokale User im Channel */
 737         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, false, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 738
 739         return ok;
 740 } /* Send_ListChange */
 741
 742
 743 /* -eof- */