src/ngircd/irc-mode.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
   4  *
   5  * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
   6  * der GNU General Public License (GPL), wie von der Free Software Foundation
   7  * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
   8  * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
   9  * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
  10  * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
  11  *
  12  * $Id: irc-mode.c,v 1.4 2002/03/25 17:11:45 alex Exp $
  13  *
  14  * irc-mode.c: IRC-Befehle zur Mode-Aenderung (MODE, AWAY, ...)
  15  */
  16
  17
  18 #include "portab.h"
  19
  20 #include "imp.h"
  21 #include <assert.h>
  22 #include <string.h>
  23
  24 #include "channel.h"
  25 #include "defines.h"
  26 #include "irc-write.h"
  27 #include "log.h"
  28 #include "messages.h"
  29
  30 #include "exp.h"
  31 #include "irc-mode.h"
  32
  33
  34 GLOBAL BOOLEAN IRC_MODE( CLIENT *Client, REQUEST *Req )
  35 {
  36         CHAR *mode_ptr, the_modes[CLIENT_MODE_LEN], x[2];
  37         CLIENT *cl, *chan_cl, *prefix;
  38         BOOLEAN set, ok;
  39         CHANNEL *chan;
  40
  41         assert( Client != NULL );
  42         assert( Req != NULL );
  43
  44         cl = chan_cl = prefix = NULL;
  45         chan = NULL;
  46
  47         /* Valider Client? */
  48         if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
  49
  50         /* Keine Parameter? */
  51         if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  52
  53         /* Ziel suchen: Client bzw. Channel */
  54         if( Client_IsValidNick( Req->argv[0] )) cl = Client_Search( Req->argv[0] );
  55         if( Channel_IsValidName( Req->argv[0] )) chan = Channel_Search( Req->argv[0] );
  56
  57         /* Kein Ziel gefunden? */
  58         if(( ! cl ) && ( ! chan )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
  59
  60         assert(( cl && chan ) != TRUE );
  61
  62         /* Falsche Anzahl Parameter? */
  63         if(( cl ) && ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  64         if(( chan ) && ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  65
  66         /* Client ermitteln, wenn bei Channel-Modes mit 3 Parametern */
  67         if(( chan ) && (Req->argc == 3 ))
  68         {
  69                 chan_cl = Client_Search( Req->argv[2] );
  70                 if( ! chan_cl ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
  71         }
  72
  73         /* Wenn Anfragender ein User ist: Zugriff erlaubt? */
  74         if( Client_Type( Client ) == CLIENT_USER )
  75         {
  76                 if( cl )
  77                 {
  78                         /* MODE ist nur fuer sich selber zulaessig! */
  79                         if( cl != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
  80                 }
  81                 if( chan )
  82                 {
  83                         /* Darf der User die Channel-Modes ermitteln? */
  84                 }
  85         }
  86
  87         /* Werden die Modes "nur" erfragt? */
  88         if(( cl ) && ( Req->argc == 1 )) return IRC_WriteStrClient( Client, RPL_UMODEIS_MSG, Client_ID( Client ), Client_Modes( cl ));
  89         if(( chan ) && ( Req->argc == 1 )) return IRC_WriteStrClient( Client, RPL_CHANNELMODEIS_MSG, Client_ID( Client ), Channel_Name( chan ), Channel_Modes( chan ));
  90
  91         mode_ptr = Req->argv[1];
  92
  93         /* Sollen Modes gesetzt oder geloescht werden? */
  94         if( cl )
  95         {
  96                 if( *mode_ptr == '+' ) set = TRUE;
  97                 else if( *mode_ptr == '-' ) set = FALSE;
  98                 else return IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Client ));
  99                 mode_ptr++;
 100         }
 101         else
 102         {
 103                 if( *mode_ptr == '-' ) set = FALSE;
 104                 else set = TRUE;
 105                 if(( *mode_ptr == '-' ) || ( *mode_ptr == '+' )) mode_ptr++;
 106         }
 107
 108         /* Prefix fuer Antworten etc. ermitteln */
 109         if( Client_Type( Client ) == CLIENT_SERVER )
 110         {
 111                 prefix = Client_Search( Req->prefix );
 112                 if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 113         }
 114         else prefix = Client;
 115
 116         /* Reply-String mit Aenderungen vorbereiten */
 117         if( set ) strcpy( the_modes, "+" );
 118         else strcpy( the_modes, "-" );
 119
 120         ok = TRUE;
 121         x[1] = '\0';
 122         while( *mode_ptr )
 123         {
 124                 x[0] = '\0';
 125                 if( Client_Type( Client ) == CLIENT_SERVER )
 126                 {
 127                         /* Befehl kommt von einem Server, daher
 128                          * trauen wir ihm "unbesehen" ... */
 129                         x[0] = *mode_ptr;
 130                 }
 131                 else
 132                 {
 133                         /* Modes validieren */
 134                         if( cl )
 135                         {
 136                                 /* User-Modes */
 137                                 switch( *mode_ptr )
 138                                 {
 139                                         case 'i':
 140                                                 /* invisible */
 141                                                 x[0] = 'i';
 142                                                 break;
 143                                         case 'r':
 144                                                 /* restricted (kann nur gesetzt werden) */
 145                                                 if( set ) x[0] = 'r';
 146                                                 else ok = IRC_WriteStrClient( Client, ERR_RESTRICTED_MSG, Client_ID( Client ));
 147                                                 break;
 148                                         case 'o':
 149                                                 /* operator (kann nur geloescht werden) */
 150                                                 if( ! set )
 151                                                 {
 152                                                         Client_SetOperByMe( Client, FALSE );
 153                                                         x[0] = 'o';
 154                                                 }
 155                                                 else ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Client ));
 156                                                 break;
 157                                         case 's':
 158                                                 /* server messages */
 159                                                 x[0] = 's';
 160                                                 break;
 161                                         default:
 162                                                 Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ));
 163                                                 ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
 164                                                 x[0] = '\0';
 165                                 }
 166                         }
 167                         if( chan )
 168                         {
 169                                 /* Ist der User ein Channel Operator? */
 170                                 if( ! strchr( Channel_UserModes( chan, Client ), 'o' ))
 171                                 {
 172                                         Log( LOG_DEBUG, "Can't change modes: \"%s\" is not operator on %s!", Client_ID( Client ), Channel_Name( chan ));
 173                                         ok = IRC_WriteStrClient( Client, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Client ), Channel_Name( chan ));
 174                                         break;
 175                                 }
 176
 177                                 /* Channel-Modes oder Channel-User-Modes */
 178                                 if( chan_cl )
 179                                 {
 180                                         /* Channel-User-Modes */
 181                                         switch( *mode_ptr )
 182                                         {
 183                                                 case 'o':
 184                                                         /* Channel Operator */
 185                                                         x[0] = 'o';
 186                                                         break;
 187                                                 case 'v':
 188                                                         /* Voice */
 189                                                         x[0] = 'v';
 190                                                         break;
 191                                                 default:
 192                                                         Log( LOG_DEBUG, "Unknown channel-user-mode \"%c%c\" from \"%s\" on \"%s\" at %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ), Client_ID( chan_cl ), Channel_Name( chan ));
 193                                                         ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
 194                                                         x[0] = '\0';
 195                                         }
 196                                 }
 197                                 else
 198                                 {
 199                                         /* Channel-Modes */
 200                                         switch( *mode_ptr )
 201                                         {
 202                                                 case 'a':
 203                                                         /* Anonymous */
 204                                                         x[0] = 'a';
 205                                                         break;
 206                                                 case 'm':
 207                                                         /* Moderated */
 208                                                         x[0] = 'm';
 209                                                         break;
 210                                                 case 'n':
 211                                                         /* kein Schreiben in den Channel von aussen */
 212                                                         x[0] = 'n';
 213                                                         break;
 214                                                 case 'p':
 215                                                         /* Private */
 216                                                         x[0] = 'p';
 217                                                         break;
 218                                                 case 'q':
 219                                                         /* Quiet */
 220                                                         x[0] = 'q';
 221                                                         break;
 222                                                 case 's':
 223                                                         /* Secret */
 224                                                         x[0] = 's';
 225                                                         break;
 226                                                 case 't':
 227                                                         /* Topic Lock */
 228                                                         x[0] = 't';
 229                                                         break;
 230                                                 default:
 231                                                         Log( LOG_DEBUG, "Unknown channel-mode \"%c%c\" from \"%s\" at %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ), Channel_Name( chan ));
 232                                                         ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
 233                                                         x[0] = '\0';
 234                                         }
 235                                 }
 236                         }
 237                 }
 238                 if( ! ok ) break;
 239
 240                 mode_ptr++;
 241                 if( ! x[0] ) continue;
 242
 243                 /* Okay, gueltigen Mode gefunden */
 244                 if( cl )
 245                 {
 246                         /* Es geht um User-Modes */
 247                         if( set )
 248                         {
 249                                 /* Mode setzen. Wenn der Client ihn noch nicht hatte: merken */
 250                                 if( Client_ModeAdd( cl, x[0] )) strcat( the_modes, x );
 251
 252                         }
 253                         else
 254                         {
 255                                 /* Modes geloescht. Wenn der Client ihn hatte: merken */
 256                                 if( Client_ModeDel( cl, x[0] )) strcat( the_modes, x );
 257                         }
 258
 259                         /* "nachbearbeiten" */
 260                         if( x[0] == 'a' )
 261                         {
 262                                 /* away */
 263                                 if( set ) Client_SetAway( cl, DEFAULT_AWAY_MSG );
 264                                 else Client_SetAway( cl, NULL );
 265                         }
 266                 }
 267                 if( chan )
 268                 {
 269                         /* Es geht um Channel-Modes oder Channel-User-Modes */
 270                         if( chan_cl )
 271                         {
 272                                 /* Channel-User-Modes */
 273                                 if( set )
 274                                 {
 275                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 276                                         if( Channel_UserModeAdd( chan, chan_cl, x[0] )) strcat( the_modes, x );
 277                                 }
 278                                 else
 279                                 {
 280                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 281                                         if( Channel_UserModeDel( chan, chan_cl, x[0] )) strcat( the_modes, x );
 282                                 }
 283                         }
 284                         else
 285                         {
 286                                 /* Channel-Mode */
 287                                 if( set )
 288                                 {
 289                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 290                                         if( Channel_ModeAdd( chan, x[0] )) strcat( the_modes, x );
 291                                 }
 292                                 else
 293                                 {
 294                                         /* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
 295                                         if( Channel_ModeDel( chan, x[0] )) strcat( the_modes, x );
 296                                 }
 297                         }
 298                 }
 299         }
 300
 301         /* Wurden Modes geaendert? */
 302         if( the_modes[1] )
 303         {
 304                 if( cl )
 305                 {
 306                         /* Client-Mode */
 307                         if( Client_Type( Client ) == CLIENT_SERVER )
 308                         {
 309                                 /* Modes an andere Server forwarden */
 310                                 IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Client_ID( cl ), the_modes );
 311                         }
 312                         else
 313                         {
 314                                 /* Bestaetigung an Client schicken & andere Server informieren */
 315                                 ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s", Client_ID( cl ), the_modes );
 316                                 IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Client_ID( cl ), the_modes );
 317                         }
 318                         Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( cl ), Client_Modes( cl ));
 319                 }
 320                 if( chan )
 321                 {
 322                         /* Channel-Modes oder Channel-User-Mode */
 323                         if( chan_cl )
 324                         {
 325                                 /* Channel-User-Mode */
 326                                 if( Client_Type( Client ) == CLIENT_SERVER )
 327                                 {
 328                                         /* Modes an andere Server und Channel-User forwarden */
 329                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s %s :%s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 330                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 331                                 }
 332                                 else
 333                                 {
 334                                         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 335                                         ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 336                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s %s :%s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 337                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
 338                                 }
 339                                 Log( LOG_DEBUG, "User \"%s\" on %s: Mode change, now \"%s\".", Client_Mask( chan_cl), Channel_Name( chan ), Channel_UserModes( chan, chan_cl ));
 340                         }
 341                         else
 342                         {
 343                                 /* Channel-Mode */
 344                                 if( Client_Type( Client ) == CLIENT_SERVER )
 345                                 {
 346                                         /* Modes an andere Server und Channel-User forwarden */
 347                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Channel_Name( chan ), the_modes );
 348                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s", Channel_Name( chan ), the_modes );
 349                                 }
 350                                 else
 351                                 {
 352                                         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 353                                         ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s", Channel_Name( chan ), the_modes );
 354                                         IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Channel_Name( chan ), the_modes );
 355                                         IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s", Channel_Name( chan ), the_modes );
 356                                 }
 357                                 Log( LOG_DEBUG, "Channel \"%s\": Mode change, now \"%s\".", Channel_Name( chan ), Channel_Modes( chan ));
 358                         }
 359                 }
 360         }
 361
 362         return ok;
 363 } /* IRC_MODE */
 364
 365
 366 GLOBAL BOOLEAN IRC_AWAY( CLIENT *Client, REQUEST *Req )
 367 {
 368         assert( Client != NULL );
 369         assert( Req != NULL );
 370
 371         if( Client_Type( Client ) != CLIENT_USER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
 372
 373         /* Falsche Anzahl Parameter? */
 374         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 375
 376         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 377         {
 378                 /* AWAY setzen */
 379                 Client_SetAway( Client, Req->argv[0] );
 380                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 381                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 382         }
 383         else
 384         {
 385                 /* AWAY loeschen */
 386                 Client_SetAway( Client, NULL );
 387                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 388                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 389         }
 390 } /* IRC_AWAY */
 391
 392
 393 /* -eof- */