src/ngircd/irc-mode.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2008 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                 LogDebug("%s \"%s\": Mode change, now \"%s\".",
 233                          Client_TypeText(Target), Client_Mask(Target),
 234                          Client_Modes(Target));
 235         }
 236
 237         IRC_SetPenalty( Client, 1 );
 238         return ok;
 239 } /* Client_Mode */
 240
 241
 242 static bool
 243 Channel_Mode_Answer_Request(CLIENT *Origin, CHANNEL *Channel)
 244 {
 245         char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], argadd[CLIENT_PASS_LEN];
 246         const char *mode_ptr;
 247
 248         /* Member or not? -- That's the question! */
 249         if (!Channel_IsMemberOf(Channel, Origin))
 250                 return IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
 251                         Client_ID(Origin), Channel_Name(Channel), Channel_Modes(Channel));
 252
 253         /* The sender is a member: generate extended reply */
 254         strlcpy(the_modes, Channel_Modes(Channel), sizeof(the_modes));
 255         mode_ptr = the_modes;
 256         the_args[0] = '\0';
 257
 258         while(*mode_ptr) {
 259                 switch(*mode_ptr) {
 260                 case 'l':
 261                         snprintf(argadd, sizeof(argadd), " %lu", Channel_MaxUsers(Channel));
 262                         strlcat(the_args, argadd, sizeof(the_args));
 263                         break;
 264                 case 'k':
 265                         strlcat(the_args, " ", sizeof(the_args));
 266                         strlcat(the_args, Channel_Key(Channel), sizeof(the_args));
 267                         break;
 268                 }
 269                 mode_ptr++;
 270         }
 271         if (the_args[0])
 272                 strlcat(the_modes, the_args, sizeof(the_modes));
 273
 274         return IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
 275                 Client_ID(Origin), Channel_Name(Channel), the_modes);
 276 }
 277
 278
 279 /**
 280  * Handle channel mode and channel-user mode changes
 281  */
 282 static bool
 283 Channel_Mode(CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel)
 284 {
 285         char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2],
 286             argadd[CLIENT_PASS_LEN], *mode_ptr;
 287         bool ok, set, modeok = true, skiponce, use_servermode = false, retval;
 288         int mode_arg, arg_arg;
 289         CLIENT *client;
 290         long l;
 291         size_t len;
 292
 293         /* Are modes allowed on channel? */
 294         if (Channel_Name(Channel)[0] == '+')
 295                 return IRC_WriteStrClient(Client, ERR_NOCHANMODES_MSG,
 296                                 Client_ID(Client), Channel_Name(Channel));
 297
 298         /* Mode request: let's answer it :-) */
 299         if (Req->argc <= 1)
 300                 return Channel_Mode_Answer_Request(Origin, Channel);
 301
 302         /* Is the user allowed to change modes? */
 303         if (Client_Type(Client) == CLIENT_USER) {
 304                 /* Is the originating user on that channel? */
 305                 if (!Channel_IsMemberOf(Channel, Origin))
 306                         return IRC_WriteStrClient(Origin, ERR_NOTONCHANNEL_MSG,
 307                                 Client_ID(Origin), Channel_Name(Channel));
 308                 modeok = false;
 309                 /* channel operator? */
 310                 if (strchr(Channel_UserModes(Channel, Origin), 'o'))
 311                         modeok = true;
 312                 else if (Conf_OperCanMode) {
 313                         /* IRC-Operators can use MODE as well */
 314                         if (Client_OperByMe(Origin)) {
 315                                 modeok = true;
 316                                 if (Conf_OperServerMode)
 317                                         use_servermode = true; /* Change Origin to Server */
 318                         }
 319                 }
 320         }
 321
 322         mode_arg = 1;
 323         mode_ptr = Req->argv[mode_arg];
 324         if (Req->argc > mode_arg + 1)
 325                 arg_arg = mode_arg + 1;
 326         else
 327                 arg_arg = -1;
 328
 329         /* Initial state: set or unset modes? */
 330         skiponce = false;
 331         switch (*mode_ptr) {
 332         case '-':
 333                 set = false;
 334                 break;
 335         case '+':
 336                 set = true;
 337                 break;
 338         default:
 339                 set = true;
 340                 skiponce = true;
 341         }
 342
 343         /* Prepare reply string */
 344         strcpy(the_modes, set ? "+" : "-");
 345         the_args[0] = '\0';
 346
 347         x[1] = '\0';
 348         ok = CONNECTED;
 349         while (mode_ptr) {
 350                 if (!skiponce)
 351                         mode_ptr++;
 352                 if (!*mode_ptr) {
 353                         /* Try next argument if there's any */
 354                         if (arg_arg > mode_arg)
 355                                 mode_arg = arg_arg;
 356                         else
 357                                 mode_arg++;
 358
 359                         if (mode_arg >= Req->argc)
 360                                 break;
 361                         mode_ptr = Req->argv[mode_arg];
 362
 363                         if (Req->argc > mode_arg + 1)
 364                                 arg_arg = mode_arg + 1;
 365                         else
 366                                 arg_arg = -1;
 367                 }
 368                 skiponce = false;
 369
 370                 switch (*mode_ptr) {
 371                 case '+':
 372                 case '-':
 373                         if (((*mode_ptr == '+') && !set)
 374                             || ((*mode_ptr == '-') && set)) {
 375                                 /* Action modifier ("+"/"-") must be changed ... */
 376                                 len = strlen(the_modes) - 1;
 377                                 if (the_modes[len] == '+' || the_modes[len] == '-') {
 378                                         /* Adjust last action modifier in result */
 379                                         the_modes[len] = *mode_ptr;
 380                                 } else {
 381                                         /* Append modifier character to result string */
 382                                         x[0] = *mode_ptr;
 383                                         strlcat(the_modes, x, sizeof(the_modes));
 384                                 }
 385                                 set = *mode_ptr == '+';
 386                         }
 387                         continue;
 388                 }
 389
 390                 /* Are there arguments left? */
 391                 if (arg_arg >= Req->argc)
 392                         arg_arg = -1;
 393
 394                 /* Validate modes */
 395                 x[0] = '\0';
 396                 argadd[0] = '\0';
 397                 client = NULL;
 398                 switch (*mode_ptr) {
 399                 /* --- Channel modes --- */
 400                 case 'i': /* Invite only */
 401                 case 'm': /* Moderated */
 402                 case 'n': /* Only members can write */
 403                 case 's': /* Secret channel */
 404                 case 't': /* Topic locked */
 405                         if (modeok)
 406                                 x[0] = *mode_ptr;
 407                         else
 408                                 ok = IRC_WriteStrClient(Origin,
 409                                         ERR_CHANOPRIVSNEEDED_MSG,
 410                                         Client_ID(Origin), Channel_Name(Channel));
 411                         break;
 412                 case 'k': /* Channel key */
 413                         if (!set) {
 414                                 if (modeok)
 415                                         x[0] = *mode_ptr;
 416                                 else
 417                                         ok = IRC_WriteStrClient(Origin,
 418                                                 ERR_CHANOPRIVSNEEDED_MSG,
 419                                                 Client_ID(Origin),
 420                                                 Channel_Name(Channel));
 421                                 break;
 422                         }
 423                         if (arg_arg > mode_arg) {
 424                                 if (modeok) {
 425                                         Channel_ModeDel(Channel, 'k');
 426                                         Channel_SetKey(Channel,
 427                                                        Req->argv[arg_arg]);
 428                                         strlcpy(argadd, Channel_Key(Channel),
 429                                                 sizeof(argadd));
 430                                         x[0] = *mode_ptr;
 431                                 } else {
 432                                         ok = IRC_WriteStrClient(Origin,
 433                                                 ERR_CHANOPRIVSNEEDED_MSG,
 434                                                 Client_ID(Origin),
 435                                                 Channel_Name(Channel));
 436                                 }
 437                                 Req->argv[arg_arg][0] = '\0';
 438                                 arg_arg++;
 439                         } else {
 440                                 ok = IRC_WriteStrClient(Origin,
 441                                         ERR_NEEDMOREPARAMS_MSG,
 442                                         Client_ID(Origin), Req->command);
 443                                 goto chan_exit;
 444                         }
 445                         break;
 446                 case 'l': /* Member limit */
 447                         if (!set) {
 448                                 if (modeok)
 449                                         x[0] = *mode_ptr;
 450                                 else
 451                                         ok = IRC_WriteStrClient(Origin,
 452                                                 ERR_CHANOPRIVSNEEDED_MSG,
 453                                                 Client_ID(Origin),
 454                                                 Channel_Name(Channel));
 455                                 break;
 456                         }
 457                         if (arg_arg > mode_arg) {
 458                                 if (modeok) {
 459                                         l = atol(Req->argv[arg_arg]);
 460                                         if (l > 0 && l < 0xFFFF) {
 461                                                 Channel_ModeDel(Channel, 'l');
 462                                                 Channel_SetMaxUsers(Channel, l);
 463                                                 snprintf(argadd, sizeof(argadd),
 464                                                          "%ld", l);
 465                                                 x[0] = *mode_ptr;
 466                                         }
 467                                 } else {
 468                                         ok = IRC_WriteStrClient(Origin,
 469                                                 ERR_CHANOPRIVSNEEDED_MSG,
 470                                                 Client_ID(Origin),
 471                                                 Channel_Name(Channel));
 472                                 }
 473                                 Req->argv[arg_arg][0] = '\0';
 474                                 arg_arg++;
 475                         } else {
 476                                 ok = IRC_WriteStrClient(Origin,
 477                                         ERR_NEEDMOREPARAMS_MSG,
 478                                         Client_ID(Origin), Req->command);
 479                                 goto chan_exit;
 480                         }
 481                         break;
 482                 case 'P': /* Persistent channel */
 483                         if (modeok) {
 484                                 /* Only IRC operators are allowed to
 485                                  * set the 'P' channel mode! */
 486                                 if (set && !(Client_OperByMe(Client)
 487                                     || Client_Type(Client) == CLIENT_SERVER))
 488                                         ok = IRC_WriteStrClient(Origin,
 489                                                 ERR_NOPRIVILEGES_MSG,
 490                                                 Client_ID(Origin));
 491                                 else
 492                                         x[0] = 'P';
 493                         } else
 494                                 ok = IRC_WriteStrClient(Origin,
 495                                         ERR_CHANOPRIVSNEEDED_MSG,
 496                                         Client_ID(Origin),
 497                                         Channel_Name(Channel));
 498                         break;
 499                 /* --- Channel user modes --- */
 500                 case 'o': /* Channel operator */
 501                 case 'v': /* Voice */
 502                         if (arg_arg > mode_arg) {
 503                                 if (modeok) {
 504                                         client = Client_Search(Req->argv[arg_arg]);
 505                                         if (client)
 506                                                 x[0] = *mode_ptr;
 507                                         else
 508                                                 ok = IRC_WriteStrClient(Client,
 509                                                         ERR_NOSUCHNICK_MSG,
 510                                                         Client_ID(Client),
 511                                                         Req->argv[arg_arg]);
 512                                 } else {
 513                                         ok = IRC_WriteStrClient(Origin,
 514                                                 ERR_CHANOPRIVSNEEDED_MSG,
 515                                                 Client_ID(Origin),
 516                                                 Channel_Name(Channel));
 517                                 }
 518                                 Req->argv[arg_arg][0] = '\0';
 519                                 arg_arg++;
 520                         } else {
 521                                 ok = IRC_WriteStrClient(Origin,
 522                                         ERR_NEEDMOREPARAMS_MSG,
 523                                         Client_ID(Origin), Req->command);
 524                                 goto chan_exit;
 525                         }
 526                         break;
 527                 /* --- Channel lists --- */
 528                 case 'I': /* Invite lists */
 529                 case 'b': /* Ban lists */
 530                         if (arg_arg > mode_arg) {
 531                                 /* modify list */
 532                                 if (modeok) {
 533                                         ok = set
 534                                            ? Add_Ban_Invite(*mode_ptr, Origin,
 535                                                 Client, Channel,
 536                                                 Req->argv[arg_arg])
 537                                            : Del_Ban_Invite(*mode_ptr, Origin,
 538                                                 Client, Channel,
 539                                                 Req->argv[arg_arg]);
 540                                 } else {
 541                                         ok = IRC_WriteStrClient(Origin,
 542                                                 ERR_CHANOPRIVSNEEDED_MSG,
 543                                                 Client_ID(Origin),
 544                                                 Channel_Name(Channel));
 545                                 }
 546                                 Req->argv[arg_arg][0] = '\0';
 547                                 arg_arg++;
 548                         } else {
 549                                 if (*mode_ptr == 'I')
 550                                         Channel_ShowInvites(Origin, Channel);
 551                                 else
 552                                         Channel_ShowBans(Origin, Channel);
 553                         }
 554                         break;
 555                 default:
 556                         Log(LOG_DEBUG,
 557                             "Unknown mode \"%c%c\" from \"%s\" on %s!?",
 558                             set ? '+' : '-', *mode_ptr, Client_ID(Origin),
 559                             Channel_Name(Channel));
 560                         if (Client_Type(Client) != CLIENT_SERVER)
 561                                 ok = IRC_WriteStrClient(Origin,
 562                                         ERR_UMODEUNKNOWNFLAG2_MSG,
 563                                         Client_ID(Origin),
 564                                         set ? '+' : '-', *mode_ptr);
 565                         x[0] = '\0';
 566                         goto chan_exit;
 567                 }       /* switch() */
 568
 569                 if (!ok)
 570                         break;
 571
 572                 /* Is there a valid mode change? */
 573                 if (!x[0])
 574                         continue;
 575
 576                 /* Validate target client */
 577                 if (client && (!Channel_IsMemberOf(Channel, client))) {
 578                         if (!IRC_WriteStrClient
 579                             (Origin, ERR_USERNOTINCHANNEL_MSG,
 580                              Client_ID(Origin), Client_ID(client),
 581                              Channel_Name(Channel)))
 582                                 break;
 583
 584                         continue;
 585                 }
 586
 587                 if (client) {
 588                         /* Channel-User-Mode */
 589                         retval = set
 590                                ? Channel_UserModeAdd(Channel, client, x[0])
 591                                : Channel_UserModeDel(Channel, client, x[0]);
 592                         if (retval) {
 593                                 strlcat(the_args, " ", sizeof(the_args));
 594                                 strlcat(the_args, Client_ID(client),
 595                                         sizeof(the_args));
 596                                 strlcat(the_modes, x, sizeof(the_modes));
 597                                 LogDebug
 598                                     ("User \"%s\": Mode change on %s, now \"%s\"",
 599                                      Client_Mask(client), Channel_Name(Channel),
 600                                      Channel_UserModes(Channel, client));
 601                         }
 602                 } else {
 603                         /* Channel-Mode */
 604                         retval = set
 605                                ? Channel_ModeAdd(Channel, x[0])
 606                                : Channel_ModeDel(Channel, x[0]);
 607                         if (retval) {
 608                                 strlcat(the_modes, x, sizeof(the_modes));
 609                                 LogDebug("Channel %s: Mode change, now \"%s\".",
 610                                          Channel_Name(Channel),
 611                                          Channel_Modes(Channel));
 612                         }
 613                 }
 614
 615                 /* Are there additional arguments to add? */
 616                 if (argadd[0]) {
 617                         strlcat(the_args, " ", sizeof(the_args));
 618                         strlcat(the_args, argadd, sizeof(the_args));
 619                 }
 620         }
 621
 622       chan_exit:
 623         /* Are there changed modes? */
 624         if (the_modes[1]) {
 625                 /* Clean up mode string */
 626                 len = strlen(the_modes) - 1;
 627                 if ((the_modes[len] == '+') || (the_modes[len] == '-'))
 628                         the_modes[len] = '\0';
 629
 630                 if (Client_Type(Client) == CLIENT_SERVER) {
 631                         /* MODE requests for local channels from other servers
 632                          * are definitely invalid! */
 633                         if (Channel_IsLocal(Channel)) {
 634                                 Log(LOG_ALERT, "Got remote MODE command for local channel!? Ignored.");
 635                                 return CONNECTED;
 636                         }
 637
 638                         /* Forward mode changes to channel users and all the
 639                          * other remote servers: */
 640                         IRC_WriteStrServersPrefix(Client, Origin,
 641                                 "MODE %s %s%s", Channel_Name(Channel),
 642                                 the_modes, the_args);
 643                         IRC_WriteStrChannelPrefix(Client, Channel, Origin,
 644                                 false, "MODE %s %s%s", Channel_Name(Channel),
 645                                 the_modes, the_args);
 646                 } else {
 647                         if (use_servermode)
 648                                 Origin = Client_ThisServer();
 649                         /* Send reply to client and inform other servers and channel users */
 650                         ok = IRC_WriteStrClientPrefix(Client, Origin,
 651                                         "MODE %s %s%s", Channel_Name(Channel),
 652                                         the_modes, the_args);
 653                         /* Only forward requests for non-local channels */
 654                         if (!Channel_IsLocal(Channel))
 655                                 IRC_WriteStrServersPrefix(Client, Origin,
 656                                         "MODE %s %s%s", Channel_Name(Channel),
 657                                         the_modes, the_args);
 658                         IRC_WriteStrChannelPrefix(Client, Channel, Origin,
 659                                 false, "MODE %s %s%s", Channel_Name(Channel),
 660                                 the_modes, the_args);
 661                 }
 662         }
 663
 664         IRC_SetPenalty(Client, 1);
 665         return CONNECTED;
 666 } /* Channel_Mode */
 667
 668
 669 GLOBAL bool
 670 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 671 {
 672         assert( Client != NULL );
 673         assert( Req != NULL );
 674
 675         /* Falsche Anzahl Parameter? */
 676         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 677
 678         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 679         {
 680                 /* AWAY setzen */
 681                 Client_SetAway( Client, Req->argv[0] );
 682                 Client_ModeAdd( Client, 'a' );
 683                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 684                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 685         }
 686         else
 687         {
 688                 /* AWAY loeschen */
 689                 Client_ModeDel( Client, 'a' );
 690                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 691                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 692         }
 693 } /* IRC_AWAY */
 694
 695
 696 static bool
 697 Add_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
 698 {
 699         const char *mask;
 700         bool already;
 701         bool ret;
 702
 703         assert( Client != NULL );
 704         assert( Channel != NULL );
 705         assert( Pattern != NULL );
 706         assert(what == 'I' || what == 'b');
 707
 708         mask = Lists_MakeMask(Pattern);
 709
 710         already = Lists_CheckDupeMask(Channel_GetListInvites(Channel), mask);
 711         if (!already) {
 712                 if (what == 'I')
 713                         ret = Channel_AddInvite(Channel, mask, false);
 714                 else
 715                         ret = Channel_AddBan(Channel, mask);
 716                 if (!ret)
 717                         return CONNECTED;
 718         }
 719         if (already && (Client_Type(Prefix) == CLIENT_SERVER))
 720                 return CONNECTED;
 721
 722         if (what == 'I')
 723                 return Send_ListChange("+I", Prefix, Client, Channel, mask);
 724         return Send_ListChange("+b", Prefix, Client, Channel, mask);
 725 }
 726
 727
 728 static bool
 729 Del_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
 730 {
 731         const char *mask;
 732         struct list_head *list;
 733
 734         assert( Client != NULL );
 735         assert( Channel != NULL );
 736         assert( Pattern != NULL );
 737         assert(what == 'I' || what == 'b');
 738
 739         mask = Lists_MakeMask( Pattern );
 740
 741         if (what == 'I')
 742                 list = Channel_GetListInvites(Channel);
 743         else
 744                 list = Channel_GetListBans(Channel);
 745
 746         Lists_Del(list, mask);
 747         if (what == 'I')
 748                 return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 749         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 750 }
 751
 752
 753 static bool
 754 Send_ListChange( char *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Mask )
 755 {
 756         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 757
 758         bool ok;
 759
 760         if( Client_Type( Client ) == CLIENT_USER )
 761         {
 762                 /* Bestaetigung an Client */
 763                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 764         }
 765         else ok = true;
 766
 767         /* an andere Server */
 768         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 769
 770         /* und lokale User im Channel */
 771         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, false, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 772
 773         return ok;
 774 } /* Send_ListChange */
 775
 776
 777 /* -eof- */