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 #include "imp.h"
  18 #include <assert.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include "defines.h"
  24 #include "conn.h"
  25 #include "client.h"
  26 #include "channel.h"
  27 #include "irc-write.h"
  28 #include "lists.h"
  29 #include "log.h"
  30 #include "parse.h"
  31 #include "messages.h"
  32 #include "resolve.h"
  33 #include "conf.h"
  34
  35 #include "exp.h"
  36 #include "irc-mode.h"
  37
  38
  39 static bool Client_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target ));
  40 static bool Channel_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel ));
  41
  42 static bool Add_Ban_Invite PARAMS((int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern));
  43 static bool Del_Ban_Invite PARAMS((int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern));
  44
  45 static bool Send_ListChange PARAMS(( char *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Mask ));
  46
  47
  48 GLOBAL bool
  49 IRC_MODE( CLIENT *Client, REQUEST *Req )
  50 {
  51         CLIENT *cl, *origin;
  52         CHANNEL *chan;
  53
  54         assert( Client != NULL );
  55         assert( Req != NULL );
  56
  57         /* No parameters? */
  58         if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  59
  60         /* Origin for answers */
  61         if( Client_Type( Client ) == CLIENT_SERVER )
  62         {
  63                 origin = Client_Search( Req->prefix );
  64                 if( ! origin ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  65         }
  66         else origin = Client;
  67
  68         /* Channel or user mode? */
  69         cl = NULL; chan = NULL;
  70         if (Client_IsValidNick(Req->argv[0]))
  71                 cl = Client_Search(Req->argv[0]);
  72         if (Channel_IsValidName(Req->argv[0]))
  73                 chan = Channel_Search(Req->argv[0]);
  74
  75         if (cl)
  76                 return Client_Mode(Client, Req, origin, cl);
  77         if (chan)
  78                 return Channel_Mode(Client, Req, origin, chan);
  79
  80         /* No target found! */
  81         return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
  82                         Client_ID(Client), Req->argv[0]);
  83 } /* IRC_MODE */
  84
  85
  86 static bool
  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         bool 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                         case 'w': /* Wallops messages */
 163                                 x[0] = *mode_ptr;
 164                                 break;
 165
 166                         case 'a': /* Away */
 167                                 if( Client_Type( Client ) == CLIENT_SERVER )
 168                                 {
 169                                         x[0] = 'a';
 170                                         Client_SetAway( Origin, DEFAULT_AWAY_MSG );
 171                                 }
 172                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 173                                 break;
 174
 175                         case 'o': /* IRC operator (only unsettable!) */
 176                                 if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
 177                                 {
 178                                         Client_SetOperByMe( Target, false );
 179                                         x[0] = 'o';
 180                                 }
 181                                 else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
 182                                 break;
 183
 184                         case 'r': /* Restricted (only settable) */
 185                                 if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
 186                                 else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
 187                                 break;
 188
 189                         default:
 190                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
 191                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 192                                 x[0] = '\0';
 193                                 goto client_exit;
 194                 }
 195                 if( ! ok ) break;
 196
 197                 /* Is there a valid mode change? */
 198                 if( ! x[0] ) continue;
 199
 200                 if( set )
 201                 {
 202                         /* Set mode */
 203                         if( Client_ModeAdd( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 204
 205                 }
 206                 else
 207                 {
 208                         /* Unset mode */
 209                         if( Client_ModeDel( Target, x[0] )) strlcat( the_modes, x, sizeof( the_modes ));
 210                 }
 211         }
 212 client_exit:
 213
 214         /* Are there changed modes? */
 215         if( the_modes[1] )
 216         {
 217                 /* Remoce needless action modifier characters */
 218                 len = strlen( the_modes ) - 1;
 219                 if(( the_modes[len] == '+' ) || ( the_modes[len] == '-' )) the_modes[len] = '\0';
 220
 221                 if( Client_Type( Client ) == CLIENT_SERVER )
 222                 {
 223                         /* Forward modes to other servers */
 224                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 225                 }
 226                 else
 227                 {
 228                         /* Send reply to client and inform other servers */
 229                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 230                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
 231                 }
 232                 Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
 233         }
 234
 235         IRC_SetPenalty( Client, 1 );
 236         return ok;
 237 } /* Client_Mode */
 238
 239
 240 static bool
 241 Channel_Mode_Answer_Request(CLIENT *Origin, CHANNEL *Channel)
 242 {
 243         char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], argadd[CLIENT_PASS_LEN];
 244         const char *mode_ptr;
 245
 246         /* Member or not? -- That's the question! */
 247         if (!Channel_IsMemberOf(Channel, Origin))
 248                 return IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
 249                         Client_ID(Origin), Channel_Name(Channel), Channel_Modes(Channel));
 250
 251         /* The sender is a member: generate extended reply */
 252         strlcpy(the_modes, Channel_Modes(Channel), sizeof(the_modes));
 253         mode_ptr = the_modes;
 254         the_args[0] = '\0';
 255
 256         while(*mode_ptr) {
 257                 switch(*mode_ptr) {
 258                 case 'l':
 259                         snprintf(argadd, sizeof(argadd), " %lu", Channel_MaxUsers(Channel));
 260                         strlcat(the_args, argadd, sizeof(the_args));
 261                         break;
 262                 case 'k':
 263                         strlcat(the_args, " ", sizeof(the_args));
 264                         strlcat(the_args, Channel_Key(Channel), sizeof(the_args));
 265                         break;
 266                 }
 267                 mode_ptr++;
 268         }
 269         if (the_args[0])
 270                 strlcat(the_modes, the_args, sizeof(the_modes));
 271
 272         return IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
 273                 Client_ID(Origin), Channel_Name(Channel), the_modes);
 274 }
 275
 276
 277 static bool
 278 Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
 279 {
 280         /* Handle channel and channel-user modes */
 281
 282         char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr;
 283         bool ok, set, modeok = true, skiponce, use_servermode = false;
 284         int mode_arg, arg_arg;
 285         CLIENT *client;
 286         long l;
 287         size_t len;
 288
 289         /* Mode request: let's answer it :-) */
 290         if (Req->argc <= 1)
 291                 return Channel_Mode_Answer_Request(Origin, Channel);
 292
 293         /* Is the user allowed to change modes? */
 294         if (Client_Type(Client) == CLIENT_USER) {
 295                 /* Is the originating user on that channel? */
 296                 if (!Channel_IsMemberOf(Channel, Origin))
 297                         return IRC_WriteStrClient(Origin, ERR_NOTONCHANNEL_MSG,
 298                                 Client_ID(Origin), Channel_Name(Channel));
 299                 modeok = false;
 300                 /* channel operator? */
 301                 if (strchr(Channel_UserModes(Channel, Origin), 'o'))
 302                         modeok = true;
 303                 else if(Conf_OperCanMode) {
 304                         /* IRC-Operators can use MODE as well */
 305                         if (Client_OperByMe(Origin)) {
 306                                 modeok = true;
 307                                 if (Conf_OperServerMode)
 308                                         use_servermode = true; /* Change Origin to Server */
 309                         }
 310                 }
 311         }
 312
 313         mode_arg = 1;
 314         mode_ptr = Req->argv[mode_arg];
 315         if (Req->argc > mode_arg + 1)
 316                 arg_arg = mode_arg + 1;
 317         else
 318                 arg_arg = -1;
 319
 320         /* Initial state: set or unset modes? */
 321         skiponce = false;
 322         switch (*mode_ptr) {
 323         case '-': set = false; break;
 324         case '+': set = true; break;
 325         default:
 326                 set = true;
 327                 skiponce = true;
 328         }
 329
 330         /* Prepare reply string */
 331         strcpy(the_modes, set ? "+" : "-");
 332         the_args[0] = '\0';
 333
 334         x[1] = '\0';
 335         ok = CONNECTED;
 336         while (mode_ptr) {
 337                 if (! skiponce)
 338                         mode_ptr++;
 339                 if (!*mode_ptr) {
 340                         /* Try next argument if there's any */
 341                         if (arg_arg > mode_arg)
 342                                 mode_arg = arg_arg;
 343                         else
 344                                 mode_arg++;
 345
 346                         if (mode_arg >= Req->argc)
 347                                 break;
 348                         mode_ptr = Req->argv[mode_arg];
 349
 350                         if (Req->argc > mode_arg + 1)
 351                                 arg_arg = mode_arg + 1;
 352                         else
 353                                 arg_arg = -1;
 354                 }
 355                 skiponce = false;
 356
 357                 switch (*mode_ptr) {
 358                 case '+':
 359                 case '-':
 360                         if (((*mode_ptr == '+') && !set) || ((*mode_ptr == '-') && set)) {
 361                                 /* Action modifier ("+"/"-") must be changed ... */
 362                                 len = strlen( the_modes ) - 1;
 363                                 if ((the_modes[len] == '+') || (the_modes[len] == '-')) {
 364                                         /* Adjust last action modifier in result */
 365                                         the_modes[len] = *mode_ptr;
 366                                 } else {
 367                                         /* Append modifier character to result string */
 368                                         x[0] = *mode_ptr;
 369                                         strlcat(the_modes, x, sizeof(the_modes));
 370                                 }
 371                                 set = *mode_ptr == '+';
 372                         }
 373                         continue;
 374                 }
 375
 376                 /* Are there arguments left? */
 377                 if( arg_arg >= Req->argc ) arg_arg = -1;
 378
 379                 /* Validate modes */
 380                 x[0] = '\0';
 381                 argadd[0] = '\0';
 382                 client = NULL;
 383                 switch( *mode_ptr )
 384                 {
 385                         /* --- Channel modes --- */
 386
 387                         case 'i': /* Invite only */
 388                         case 'm': /* Moderated */
 389                         case 'n': /* Only members can write */
 390                         case 's': /* Secret channel */
 391                         case 't': /* Topic locked */
 392                                 if( modeok ) x[0] = *mode_ptr;
 393                                 else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 394                                 break;
 395
 396                         case 'k': /* Channel key */
 397                                 if( ! set )
 398                                 {
 399                                         if( modeok ) x[0] = *mode_ptr;
 400                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 401                                         break;
 402                                 }
 403                                 if( arg_arg > mode_arg )
 404                                 {
 405                                         if( modeok )
 406                                         {
 407                                                 Channel_ModeDel( Channel, 'k' );
 408                                                 Channel_SetKey( Channel, Req->argv[arg_arg] );
 409                                                 strlcpy( argadd, Channel_Key( Channel ), sizeof( argadd ));
 410                                                 x[0] = *mode_ptr;
 411                                         }
 412                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 413                                         Req->argv[arg_arg][0] = '\0';
 414                                         arg_arg++;
 415                                 }
 416                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 417                                 break;
 418
 419                         case 'l': /* Member limit */
 420                                 if( ! set )
 421                                 {
 422                                         if( modeok ) x[0] = *mode_ptr;
 423                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 424                                         break;
 425                                 }
 426                                 if( arg_arg > mode_arg )
 427                                 {
 428                                         if( modeok )
 429                                         {
 430                                                 l = atol( Req->argv[arg_arg] );
 431                                                 if( l > 0 && l < 0xFFFF )
 432                                                 {
 433                                                         Channel_ModeDel( Channel, 'l' );
 434                                                         Channel_SetMaxUsers( Channel, l );
 435                                                         snprintf( argadd, sizeof( argadd ), "%ld", l );
 436                                                         x[0] = *mode_ptr;
 437                                                 }
 438                                         }
 439                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 440                                         Req->argv[arg_arg][0] = '\0';
 441                                         arg_arg++;
 442                                 }
 443                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 444                                 break;
 445
 446                         case 'P': /* Persistent channel */
 447                                 if (modeok) {
 448                                         /* Only IRC operators are allowed to
 449                                          * set the 'P' channel mode! */
 450                                         if (set && ! (Client_OperByMe(Client)
 451                                             || Client_Type(Client) == CLIENT_SERVER)) {
 452                                                 ok = IRC_WriteStrClient(Origin,
 453                                                         ERR_NOPRIVILEGES_MSG,
 454                                                         Client_ID(Origin));
 455                                         } else
 456                                                 x[0] = 'P';
 457                                 } else
 458                                         ok = IRC_WriteStrClient(Origin,
 459                                                 ERR_CHANOPRIVSNEEDED_MSG,
 460                                                 Client_ID(Origin),
 461                                                 Channel_Name(Channel));
 462                                 break;
 463
 464                         /* --- Channel user modes --- */
 465
 466                         case 'o': /* Channel operator */
 467                         case 'v': /* Voice */
 468                                 if( arg_arg > mode_arg )
 469                                 {
 470                                         if( modeok )
 471                                         {
 472                                                 client = Client_Search( Req->argv[arg_arg] );
 473                                                 if( client ) x[0] = *mode_ptr;
 474                                                 else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
 475                                         }
 476                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 477                                         Req->argv[arg_arg][0] = '\0';
 478                                         arg_arg++;
 479                                 }
 480                                 else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
 481                                 break;
 482
 483                         /* --- Channel lists --- */
 484
 485                         case 'I': /* Invite lists */
 486                                 if( arg_arg > mode_arg )
 487                                 {
 488                                         /* modify list */
 489                                         if( modeok )
 490                                         {
 491                                                 if( set ) Add_Ban_Invite(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg] );
 492                                                 else Del_Ban_Invite(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg] );
 493                                         }
 494                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 495                                         Req->argv[arg_arg][0] = '\0';
 496                                         arg_arg++;
 497                                 }
 498                                 else Channel_ShowInvites( Origin, Channel );
 499                                 break;
 500
 501                         case 'b': /* Ban lists */
 502                                 if( arg_arg > mode_arg )
 503                                 {
 504                                         /* modify list */
 505                                         if( modeok )
 506                                         {
 507                                                 if( set ) Add_Ban_Invite(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg]);
 508                                                 else Del_Ban_Invite(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg]);
 509                                         }
 510                                         else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
 511                                         Req->argv[arg_arg][0] = '\0';
 512                                         arg_arg++;
 513                                 }
 514                                 else Channel_ShowBans( Origin, Channel );
 515                                 break;
 516
 517                         default:
 518                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
 519                                 if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
 520                                 x[0] = '\0';
 521                                 goto chan_exit;
 522                 }
 523                 if( ! ok ) break;
 524
 525                 /* Is there a valid mode change? */
 526                 if( ! x[0] ) continue;
 527
 528                 /* Validate target client */
 529                 if( client && ( ! Channel_IsMemberOf( Channel, client )))
 530                 {
 531                         if( ! IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( client ), Channel_Name( Channel ))) break;
 532                         continue;
 533                 }
 534
 535                 if( set )
 536                 {
 537                         /* Set mode */
 538                         if( client )
 539                         {
 540                                 /* Channel-User-Mode */
 541                                 if( Channel_UserModeAdd( Channel, client, x[0] ))
 542                                 {
 543                                         strlcat( the_args, " ", sizeof( the_args ));
 544                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 545                                         strlcat( the_modes, x, sizeof( the_modes ));
 546                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 547                                 }
 548                         }
 549                         else
 550                         {
 551                                 /* Channel-Mode */
 552                                 if( Channel_ModeAdd( Channel, x[0] ))
 553                                 {
 554                                         strlcat( the_modes, x, sizeof( the_modes ));
 555                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 556                                 }
 557                         }
 558                 }
 559                 else
 560                 {
 561                         /* Unset mode */
 562                         if( client )
 563                         {
 564                                 /* Channel-User-Mode */
 565                                 if( Channel_UserModeDel( Channel, client, x[0] ))
 566                                 {
 567                                         strlcat( the_args, " ", sizeof( the_args ));
 568                                         strlcat( the_args, Client_ID( client ), sizeof( the_args ));
 569                                         strlcat( the_modes, x, sizeof( the_modes ));
 570                                         Log( LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"", Client_Mask( client ), Channel_Name( Channel ), Channel_UserModes( Channel, client ));
 571                                 }
 572                         }
 573                         else
 574                         {
 575                                 /* Channel-Mode */
 576                                 if( Channel_ModeDel( Channel, x[0] ))
 577                                 {
 578                                         strlcat( the_modes, x, sizeof( the_modes ));
 579                                         Log( LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name( Channel ), Channel_Modes( Channel ));
 580                                 }
 581                         }
 582                 }
 583
 584                 /* Are there additional arguments to add? */
 585                 if( argadd[0] )
 586                 {
 587                         strlcat( the_args, " ", sizeof( the_args ));
 588                         strlcat( the_args, argadd, sizeof( the_args ));
 589                 }
 590         }
 591 chan_exit:
 592
 593         /* Are there changed modes? */
 594         if (the_modes[1]) {
 595                 /* Clean up mode string */
 596                 len = strlen(the_modes) - 1;
 597                 if ((the_modes[len] == '+') || (the_modes[len] == '-'))
 598                         the_modes[len] = '\0';
 599
 600                 if (Client_Type(Client) == CLIENT_SERVER) {
 601                         /* Forward mode changes to channel users and other servers */
 602                         IRC_WriteStrServersPrefix(Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args);
 603                         IRC_WriteStrChannelPrefix(Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args);
 604                 } else {
 605                         if (use_servermode)
 606                                 Origin = Client_ThisServer();
 607                         /* Send reply to client and inform other servers and channel users */
 608                         ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 609                         IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 610                         IRC_WriteStrChannelPrefix( Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
 611                 }
 612         }
 613
 614         IRC_SetPenalty( Client, 1 );
 615         return CONNECTED;
 616 } /* Channel_Mode */
 617
 618
 619 GLOBAL bool
 620 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 621 {
 622         assert( Client != NULL );
 623         assert( Req != NULL );
 624
 625         /* Falsche Anzahl Parameter? */
 626         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 627
 628         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 629         {
 630                 /* AWAY setzen */
 631                 Client_SetAway( Client, Req->argv[0] );
 632                 Client_ModeAdd( Client, 'a' );
 633                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 634                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 635         }
 636         else
 637         {
 638                 /* AWAY loeschen */
 639                 Client_ModeDel( Client, 'a' );
 640                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 641                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 642         }
 643 } /* IRC_AWAY */
 644
 645
 646 static bool
 647 Add_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
 648 {
 649         const char *mask;
 650         bool already;
 651         bool ret;
 652
 653         assert( Client != NULL );
 654         assert( Channel != NULL );
 655         assert( Pattern != NULL );
 656         assert(what == 'I' || what == 'b');
 657
 658         mask = Lists_MakeMask(Pattern);
 659
 660         already = Lists_CheckDupeMask(Channel_GetListInvites(Channel), mask);
 661         if (!already) {
 662                 if (what == 'I')
 663                         ret = Channel_AddInvite(Channel, mask, false);
 664                 else
 665                         ret = Channel_AddBan(Channel, mask);
 666                 if (!ret)
 667                         return CONNECTED;
 668         }
 669         if (already && (Client_Type(Prefix) == CLIENT_SERVER))
 670                 return CONNECTED;
 671
 672         if (what == 'I')
 673                 return Send_ListChange("+I", Prefix, Client, Channel, mask);
 674         return Send_ListChange("+b", Prefix, Client, Channel, mask);
 675 }
 676
 677
 678 static bool
 679 Del_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
 680 {
 681         const char *mask;
 682         struct list_head *list;
 683
 684         assert( Client != NULL );
 685         assert( Channel != NULL );
 686         assert( Pattern != NULL );
 687         assert(what == 'I' || what == 'b');
 688
 689         mask = Lists_MakeMask( Pattern );
 690
 691         if (what == 'I')
 692                 list = Channel_GetListInvites(Channel);
 693         else
 694                 list = Channel_GetListBans(Channel);
 695
 696         Lists_Del(list, mask);
 697         if (what == 'I')
 698                 return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 699         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 700 }
 701
 702
 703 static bool
 704 Send_ListChange( char *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Mask )
 705 {
 706         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 707
 708         bool ok;
 709
 710         if( Client_Type( Client ) == CLIENT_USER )
 711         {
 712                 /* Bestaetigung an Client */
 713                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 714         }
 715         else ok = true;
 716
 717         /* an andere Server */
 718         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 719
 720         /* und lokale User im Channel */
 721         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, false, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 722
 723         return ok;
 724 } /* Send_ListChange */
 725
 726
 727 /* -eof- */