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                 /* --- Channel modes --- */
 385                 case 'i': /* Invite only */
 386                 case 'm': /* Moderated */
 387                 case 'n': /* Only members can write */
 388                 case 's': /* Secret channel */
 389                 case 't': /* Topic locked */
 390                         if (modeok)
 391                                 x[0] = *mode_ptr;
 392                         else
 393                                 ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 394                         break;
 395                 case 'k': /* Channel key */
 396                         if (! set) {
 397                                 if (modeok)
 398                                         x[0] = *mode_ptr;
 399                                 else
 400                                         ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 401                                 break;
 402                         }
 403                         if (arg_arg > mode_arg) {
 404                                 if (modeok) {
 405                                         Channel_ModeDel(Channel, 'k');
 406                                         Channel_SetKey(Channel, Req->argv[arg_arg]);
 407                                         strlcpy(argadd, Channel_Key(Channel), sizeof(argadd));
 408                                         x[0] = *mode_ptr;
 409                                 } else {
 410                                         ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 411                                 }
 412                                 Req->argv[arg_arg][0] = '\0';
 413                                 arg_arg++;
 414                         } else {
 415                                 ok = IRC_WriteStrClient(Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID(Origin), Req->command);
 416                         }
 417                         break;
 418                 case 'l': /* Member limit */
 419                         if (!set) {
 420                                 if (modeok)
 421                                         x[0] = *mode_ptr;
 422                                 else
 423                                         ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 424                                 break;
 425                         }
 426                         if (arg_arg > mode_arg) {
 427                                 if (modeok) {
 428                                         l = atol(Req->argv[arg_arg]);
 429                                         if (l > 0 && l < 0xFFFF) {
 430                                                 Channel_ModeDel(Channel, 'l');
 431                                                 Channel_SetMaxUsers(Channel, l);
 432                                                 snprintf(argadd, sizeof(argadd), "%ld", l);
 433                                                 x[0] = *mode_ptr;
 434                                         }
 435                                 } else {
 436                                         ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 437                                 }
 438                                 Req->argv[arg_arg][0] = '\0';
 439                                 arg_arg++;
 440                         } else {
 441                                 ok = IRC_WriteStrClient(Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID(Origin), Req->command);
 442                         }
 443                         break;
 444                 case 'P': /* Persistent channel */
 445                         if (modeok) {
 446                                 /* Only IRC operators are allowed to
 447                                  * set the 'P' channel mode! */
 448                                 if (set && !(Client_OperByMe(Client) || Client_Type(Client) == CLIENT_SERVER))
 449                                         ok = IRC_WriteStrClient(Origin, ERR_NOPRIVILEGES_MSG, Client_ID(Origin));
 450                                 else
 451                                                 x[0] = 'P';
 452                         } else
 453                                 ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 454                         break;
 455                 /* --- Channel user modes --- */
 456                 case 'o': /* Channel operator */
 457                 case 'v': /* Voice */
 458                         if (arg_arg > mode_arg) {
 459                                 if (modeok) {
 460                                         client = Client_Search(Req->argv[arg_arg]);
 461                                         if (client)
 462                                                 x[0] = *mode_ptr;
 463                                         else
 464                                                 ok = IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, Client_ID(Client), Req->argv[arg_arg]);
 465                                 } else {
 466                                         ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel));
 467                                 }
 468                                 Req->argv[arg_arg][0] = '\0';
 469                                 arg_arg++;
 470                         } else {
 471                                 ok = IRC_WriteStrClient(Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID(Origin), Req->command);
 472                         }
 473                         break;
 474                 /* --- Channel lists --- */
 475                 case 'I': /* Invite lists */
 476                 case 'b': /* Ban lists */
 477                         if (arg_arg > mode_arg) {
 478                                 /* modify list */
 479                                 if (modeok) {
 480                                         ok = set ? Add_Ban_Invite(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg])
 481                                                  : Del_Ban_Invite(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg]);
 482                                 } else {
 483                                         ok = IRC_WriteStrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG,
 484                                                         Client_ID(Origin), Channel_Name(Channel));
 485                                 }
 486                                 Req->argv[arg_arg][0] = '\0';
 487                                 arg_arg++;
 488                         } else {
 489                                 if (*mode_ptr == 'I')
 490                                         Channel_ShowInvites(Origin, Channel);
 491                                 else
 492                                         Channel_ShowBans(Origin, Channel);
 493                         }
 494                         break;
 495                 default:
 496                         Log(LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?",
 497                                 set ? '+' : '-', *mode_ptr, Client_ID(Origin), Channel_Name(Channel));
 498                         if (Client_Type(Client) != CLIENT_SERVER)
 499                                 ok = IRC_WriteStrClient(Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID(Origin), set ? '+' : '-', *mode_ptr);
 500                         x[0] = '\0';
 501                         goto chan_exit;
 502                 } /* switch() */
 503
 504                 if (!ok)
 505                         break;
 506
 507                 /* Is there a valid mode change? */
 508                 if (!x[0])
 509                         continue;
 510
 511                 /* Validate target client */
 512                 if (client && (!Channel_IsMemberOf(Channel, client))) {
 513                         if (!IRC_WriteStrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
 514                                 Client_ID(Origin), Client_ID(client), Channel_Name(Channel)))
 515                                         break;
 516
 517                         continue;
 518                 }
 519
 520                 if (client) {
 521                         /* Channel-User-Mode */
 522                         if (set) {
 523                                 if (Channel_UserModeAdd(Channel, client, x[0])) {
 524                                         strlcat(the_args, " ", sizeof(the_args));
 525                                         strlcat(the_args, Client_ID(client), sizeof(the_args));
 526                                         strlcat(the_modes, x, sizeof(the_modes));
 527                                         Log(LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"",
 528                                                 Client_Mask(client), Channel_Name(Channel), Channel_UserModes(Channel, client));
 529                                 }
 530                         } else {
 531                                 if (Channel_UserModeDel(Channel, client, x[0])) {
 532                                         strlcat(the_args, " ", sizeof(the_args));
 533                                         strlcat(the_args, Client_ID(client), sizeof(the_args));
 534                                         strlcat(the_modes, x, sizeof(the_modes));
 535                                         Log(LOG_DEBUG, "User \"%s\": Mode change on %s, now \"%s\"",
 536                                                 Client_Mask(client), Channel_Name(Channel), Channel_UserModes(Channel, client));
 537                                 }
 538                         }
 539                 } else {
 540                         /* Channel-Mode */
 541                         if (set) {
 542                                 if (Channel_ModeAdd( Channel, x[0])) {
 543                                         strlcat(the_modes, x, sizeof(the_modes));
 544                                         Log(LOG_DEBUG, "Channel %s: Mode change, now \"%s\".", Channel_Name(Channel), Channel_Modes(Channel));
 545                                 }
 546                         } else {
 547                                 /* Channel-Mode */
 548                                 if (Channel_ModeDel(Channel, x[0])) {
 549                                         strlcat(the_modes, x, sizeof(the_modes));
 550                                         Log(LOG_DEBUG, "Channel %s: Mode change, now \"%s\".",
 551                                                 Channel_Name(Channel), Channel_Modes(Channel));
 552                                 }
 553                         }
 554                 }
 555
 556                 /* Are there additional arguments to add? */
 557                 if (argadd[0]) {
 558                         strlcat(the_args, " ", sizeof(the_args));
 559                         strlcat(the_args, argadd, sizeof(the_args));
 560                 }
 561         }
 562 chan_exit:
 563         /* Are there changed modes? */
 564         if (the_modes[1]) {
 565                 /* Clean up mode string */
 566                 len = strlen(the_modes) - 1;
 567                 if ((the_modes[len] == '+') || (the_modes[len] == '-'))
 568                         the_modes[len] = '\0';
 569
 570                 if (Client_Type(Client) == CLIENT_SERVER) {
 571                         /* Forward mode changes to channel users and other servers */
 572                         IRC_WriteStrServersPrefix(Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args);
 573                         IRC_WriteStrChannelPrefix(Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name(Channel), the_modes, the_args);
 574                 } else {
 575                         if (use_servermode)
 576                                 Origin = Client_ThisServer();
 577                         /* Send reply to client and inform other servers and channel users */
 578                         ok = IRC_WriteStrClientPrefix(Client, Origin, "MODE %s %s%s",
 579                                         Channel_Name(Channel), the_modes, the_args);
 580                         IRC_WriteStrServersPrefix(Client, Origin, "MODE %s %s%s",
 581                                         Channel_Name(Channel), the_modes, the_args);
 582                         IRC_WriteStrChannelPrefix(Client, Channel, Origin, false, "MODE %s %s%s",
 583                                                 Channel_Name(Channel), the_modes, the_args);
 584                 }
 585         }
 586
 587         IRC_SetPenalty(Client, 1);
 588         return CONNECTED;
 589 } /* Channel_Mode */
 590
 591
 592 GLOBAL bool
 593 IRC_AWAY( CLIENT *Client, REQUEST *Req )
 594 {
 595         assert( Client != NULL );
 596         assert( Req != NULL );
 597
 598         /* Falsche Anzahl Parameter? */
 599         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 600
 601         if(( Req->argc == 1 ) && (Req->argv[0][0] ))
 602         {
 603                 /* AWAY setzen */
 604                 Client_SetAway( Client, Req->argv[0] );
 605                 Client_ModeAdd( Client, 'a' );
 606                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :+a", Client_ID( Client ));
 607                 return IRC_WriteStrClient( Client, RPL_NOWAWAY_MSG, Client_ID( Client ));
 608         }
 609         else
 610         {
 611                 /* AWAY loeschen */
 612                 Client_ModeDel( Client, 'a' );
 613                 IRC_WriteStrServersPrefix( Client, Client, "MODE %s :-a", Client_ID( Client ));
 614                 return IRC_WriteStrClient( Client, RPL_UNAWAY_MSG, Client_ID( Client ));
 615         }
 616 } /* IRC_AWAY */
 617
 618
 619 static bool
 620 Add_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
 621 {
 622         const char *mask;
 623         bool already;
 624         bool ret;
 625
 626         assert( Client != NULL );
 627         assert( Channel != NULL );
 628         assert( Pattern != NULL );
 629         assert(what == 'I' || what == 'b');
 630
 631         mask = Lists_MakeMask(Pattern);
 632
 633         already = Lists_CheckDupeMask(Channel_GetListInvites(Channel), mask);
 634         if (!already) {
 635                 if (what == 'I')
 636                         ret = Channel_AddInvite(Channel, mask, false);
 637                 else
 638                         ret = Channel_AddBan(Channel, mask);
 639                 if (!ret)
 640                         return CONNECTED;
 641         }
 642         if (already && (Client_Type(Prefix) == CLIENT_SERVER))
 643                 return CONNECTED;
 644
 645         if (what == 'I')
 646                 return Send_ListChange("+I", Prefix, Client, Channel, mask);
 647         return Send_ListChange("+b", Prefix, Client, Channel, mask);
 648 }
 649
 650
 651 static bool
 652 Del_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
 653 {
 654         const char *mask;
 655         struct list_head *list;
 656
 657         assert( Client != NULL );
 658         assert( Channel != NULL );
 659         assert( Pattern != NULL );
 660         assert(what == 'I' || what == 'b');
 661
 662         mask = Lists_MakeMask( Pattern );
 663
 664         if (what == 'I')
 665                 list = Channel_GetListInvites(Channel);
 666         else
 667                 list = Channel_GetListBans(Channel);
 668
 669         Lists_Del(list, mask);
 670         if (what == 'I')
 671                 return Send_ListChange( "-I", Prefix, Client, Channel, mask );
 672         return Send_ListChange( "-b", Prefix, Client, Channel, mask );
 673 }
 674
 675
 676 static bool
 677 Send_ListChange( char *Mode, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Mask )
 678 {
 679         /* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
 680
 681         bool ok;
 682
 683         if( Client_Type( Client ) == CLIENT_USER )
 684         {
 685                 /* Bestaetigung an Client */
 686                 ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 687         }
 688         else ok = true;
 689
 690         /* an andere Server */
 691         IRC_WriteStrServersPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 692
 693         /* und lokale User im Channel */
 694         IRC_WriteStrChannelPrefix( Client, Channel, Prefix, false, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
 695
 696         return ok;
 697 } /* Send_ListChange */
 698
 699
 700 /* -eof- */