src/ngircd/irc-info.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 info commands
  12  */
  13
  14
  15 #include "portab.h"
  16
  17 #include "imp.h"
  18 #include <assert.h>
  19 #include <errno.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <strings.h>
  24
  25 #include "ngircd.h"
  26 #include "conn-func.h"
  27 #include "conn-zip.h"
  28 #include "client.h"
  29 #include "channel.h"
  30 #include "resolve.h"
  31 #include "conf.h"
  32 #include "defines.h"
  33 #include "log.h"
  34 #include "messages.h"
  35 #include "match.h"
  36 #include "tool.h"
  37 #include "parse.h"
  38 #include "irc-write.h"
  39
  40 #include "exp.h"
  41 #include "irc-info.h"
  42
  43
  44 GLOBAL bool
  45 IRC_ADMIN(CLIENT *Client, REQUEST *Req )
  46 {
  47         CLIENT *target, *prefix;
  48
  49         assert( Client != NULL );
  50         assert( Req != NULL );
  51
  52         /* Falsche Anzahl Parameter? */
  53         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  54
  55         /* Ziel suchen */
  56         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
  57         else target = Client_ThisServer( );
  58
  59         /* Prefix ermitteln */
  60         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
  61         else prefix = Client;
  62         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  63
  64         /* An anderen Server weiterleiten? */
  65         if( target != Client_ThisServer( ))
  66         {
  67                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
  68
  69                 /* forwarden */
  70                 IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] );
  71                 return CONNECTED;
  72         }
  73
  74         /* mit Versionsinfo antworten */
  75         if( ! IRC_WriteStrClient( Client, RPL_ADMINME_MSG, Client_ID( prefix ), Conf_ServerName )) return DISCONNECTED;
  76         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC1_MSG, Client_ID( prefix ), Conf_ServerAdmin1 )) return DISCONNECTED;
  77         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC2_MSG, Client_ID( prefix ), Conf_ServerAdmin2 )) return DISCONNECTED;
  78         if( ! IRC_WriteStrClient( Client, RPL_ADMINEMAIL_MSG, Client_ID( prefix ), Conf_ServerAdminMail )) return DISCONNECTED;
  79
  80         IRC_SetPenalty( Client, 1 );
  81         return CONNECTED;
  82 } /* IRC_ADMIN */
  83
  84
  85 /**
  86  * Handler for the IRC command "INFO".
  87  * See RFC 2812 section 3.4.10.
  88  */
  89 GLOBAL bool
  90 IRC_INFO(CLIENT * Client, REQUEST * Req)
  91 {
  92         CLIENT *target, *prefix;
  93         char msg[510];
  94
  95         assert(Client != NULL);
  96         assert(Req != NULL);
  97
  98         /* Wrong number of parameters? */
  99         if (Req->argc > 1)
 100                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 101                                           Client_ID(Client), Req->command);
 102
 103         /* Determine prefix */
 104         if (Client_Type(Client) == CLIENT_SERVER)
 105                 prefix = Client_Search(Req->prefix);
 106         else
 107                 prefix = Client;
 108         if (!prefix)
 109                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 110                                           Client_ID(Client), Req->prefix);
 111
 112         /* Look for a target */
 113         if (Req->argc > 0)
 114                 target = Client_Search(Req->argv[0]);
 115         else
 116                 target = Client_ThisServer();
 117
 118         /* Make sure that the target is a server */
 119         if (target && Client_Type(target) != CLIENT_SERVER)
 120                 target = Client_Introducer(target);
 121
 122         if (!target)
 123                 return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
 124                                           Client_ID(prefix), Req->argv[0]);
 125
 126         /* Pass on to another server? */
 127         if (target != Client_ThisServer()) {
 128                 IRC_WriteStrClientPrefix(target, prefix, "INFO %s",
 129                                          Req->argv[0]);
 130                 return CONNECTED;
 131         }
 132
 133         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix),
 134                                 NGIRCd_Version))
 135                 return DISCONNECTED;
 136
 137 #if defined(__DATE__) && defined(__TIME__)
 138         snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__);
 139         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 140                 return DISCONNECTED;
 141 #endif
 142
 143         strlcpy(msg, "On-line since ", sizeof(msg));
 144         strlcat(msg, NGIRCd_StartStr, sizeof(msg));
 145         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 146                 return DISCONNECTED;
 147
 148         if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix)))
 149                 return DISCONNECTED;
 150
 151         IRC_SetPenalty(Client, 2);
 152         return CONNECTED;
 153 } /* IRC_INFO */
 154
 155
 156 GLOBAL bool
 157 IRC_ISON( CLIENT *Client, REQUEST *Req )
 158 {
 159         char rpl[COMMAND_LEN];
 160         CLIENT *c;
 161         char *ptr;
 162         int i;
 163
 164         assert( Client != NULL );
 165         assert( Req != NULL );
 166
 167         /* Falsche Anzahl Parameter? */
 168         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 169
 170         strlcpy( rpl, RPL_ISON_MSG, sizeof rpl );
 171         for( i = 0; i < Req->argc; i++ )
 172         {
 173                 ptr = strtok( Req->argv[i], " " );
 174                 while( ptr )
 175                 {
 176                         ngt_TrimStr( ptr );
 177                         c = Client_Search( ptr );
 178                         if( c && ( Client_Type( c ) == CLIENT_USER ))
 179                         {
 180                                 /* Dieser Nick ist "online" */
 181                                 strlcat( rpl, ptr, sizeof( rpl ));
 182                                 strlcat( rpl, " ", sizeof( rpl ));
 183                         }
 184                         ptr = strtok( NULL, " " );
 185                 }
 186         }
 187         ngt_TrimLastChr(rpl, ' ');
 188
 189         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 190 } /* IRC_ISON */
 191
 192
 193 GLOBAL bool
 194 IRC_LINKS( CLIENT *Client, REQUEST *Req )
 195 {
 196         CLIENT *target, *from, *c;
 197         char *mask;
 198
 199         assert( Client != NULL );
 200         assert( Req != NULL );
 201
 202         /* Falsche Anzahl Parameter? */
 203         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 204
 205         /* Server-Mask ermitteln */
 206         if( Req->argc > 0 ) mask = Req->argv[Req->argc - 1];
 207         else mask = "*";
 208
 209         /* Absender ermitteln */
 210         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 211         else from = Client;
 212         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 213
 214         /* An anderen Server forwarden? */
 215         if( Req->argc == 2 )
 216         {
 217                 target = Client_Search( Req->argv[0] );
 218                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 219                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LINKS %s %s", Req->argv[0], Req->argv[1] );
 220         }
 221
 222         /* Wer ist der Absender? */
 223         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 224         else target = Client;
 225         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 226
 227         c = Client_First( );
 228         while( c )
 229         {
 230                 if( Client_Type( c ) == CLIENT_SERVER )
 231                 {
 232                         if( ! IRC_WriteStrClient( target, RPL_LINKS_MSG, Client_ID( target ), Client_ID( c ), Client_ID( Client_TopServer( c ) ? Client_TopServer( c ) : Client_ThisServer( )), Client_Hops( c ), Client_Info( c ))) return DISCONNECTED;
 233                 }
 234                 c = Client_Next( c );
 235         }
 236
 237         IRC_SetPenalty( target, 1 );
 238         return IRC_WriteStrClient( target, RPL_ENDOFLINKS_MSG, Client_ID( target ), mask );
 239 } /* IRC_LINKS */
 240
 241
 242 GLOBAL bool
 243 IRC_LUSERS( CLIENT *Client, REQUEST *Req )
 244 {
 245         CLIENT *target, *from;
 246
 247         assert( Client != NULL );
 248         assert( Req != NULL );
 249
 250         /* Falsche Anzahl Parameter? */
 251         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 252
 253         /* Absender ermitteln */
 254         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 255         else from = Client;
 256         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 257
 258         /* An anderen Server forwarden? */
 259         if( Req->argc == 2 )
 260         {
 261                 target = Client_Search( Req->argv[1] );
 262                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 263                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LUSERS %s %s", Req->argv[0], Req->argv[1] );
 264         }
 265
 266         /* Wer ist der Absender? */
 267         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 268         else target = Client;
 269         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 270
 271         IRC_Send_LUSERS( target );
 272
 273         IRC_SetPenalty( target, 1 );
 274         return CONNECTED;
 275 } /* IRC_LUSERS */
 276
 277
 278 /**
 279  * Handler for the IRC command "SERVLIST".
 280  * List registered services, see RFC 2811, section 3.5.1: the syntax is
 281  * "SERVLIST [<mask> [<type>]]".
 282  */
 283 GLOBAL bool
 284 IRC_SERVLIST(CLIENT *Client, REQUEST *Req)
 285 {
 286         CLIENT *c;
 287
 288         assert(Client != NULL);
 289         assert(Req != NULL);
 290
 291         if (Req->argc > 2)
 292                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 293                                           Client_ID(Client), Req->command);
 294
 295         if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) {
 296                 for (c = Client_First(); c!= NULL; c = Client_Next(c)) {
 297                         if (Client_Type(c) != CLIENT_SERVICE)
 298                                 continue;
 299                         if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0],
 300                                                                   Client_ID(c)))
 301                                 continue;
 302                         if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG,
 303                                         Client_ID(Client), Client_Mask(c),
 304                                         Client_Mask(Client_Introducer(c)), "*",
 305                                         0, Client_Hops(c), Client_Info(c)))
 306                                 return DISCONNECTED;
 307                 }
 308         }
 309
 310         return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client),
 311                                   Req->argc > 0 ? Req->argv[0] : "*",
 312                                   Req->argc > 1 ? Req->argv[1] : "0");
 313 } /* IRC_SERVLIST */
 314
 315
 316 GLOBAL bool
 317 IRC_MOTD( CLIENT *Client, REQUEST *Req )
 318 {
 319         CLIENT *from, *target;
 320
 321         assert( Client != NULL );
 322         assert( Req != NULL );
 323
 324         /* Falsche Anzahl Parameter? */
 325         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 326
 327         /* From aus Prefix ermitteln */
 328         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 329         else from = Client;
 330         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 331
 332         if( Req->argc == 1 )
 333         {
 334                 /* an anderen Server forwarden */
 335                 target = Client_Search( Req->argv[0] );
 336                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 337
 338                 if( target != Client_ThisServer( ))
 339                 {
 340                         /* Ok, anderer Server ist das Ziel: forwarden */
 341                         return IRC_WriteStrClientPrefix( target, from, "MOTD %s", Req->argv[0] );
 342                 }
 343         }
 344
 345         IRC_SetPenalty( from, 3 );
 346         return IRC_Show_MOTD( from );
 347 } /* IRC_MOTD */
 348
 349
 350 GLOBAL bool
 351 IRC_NAMES( CLIENT *Client, REQUEST *Req )
 352 {
 353         char rpl[COMMAND_LEN], *ptr;
 354         CLIENT *target, *from, *c;
 355         CHANNEL *chan;
 356
 357         assert( Client != NULL );
 358         assert( Req != NULL );
 359
 360         /* Falsche Anzahl Parameter? */
 361         if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 362
 363         /* From aus Prefix ermitteln */
 364         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 365         else from = Client;
 366         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 367
 368         if( Req->argc == 2 )
 369         {
 370                 /* an anderen Server forwarden */
 371                 target = Client_Search( Req->argv[1] );
 372                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 373
 374                 if( target != Client_ThisServer( ))
 375                 {
 376                         /* Ok, anderer Server ist das Ziel: forwarden */
 377                         return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] );
 378                 }
 379         }
 380
 381         if( Req->argc > 0 )
 382         {
 383                 /* bestimmte Channels durchgehen */
 384                 ptr = strtok( Req->argv[0], "," );
 385                 while( ptr )
 386                 {
 387                         chan = Channel_Search( ptr );
 388                         if( chan )
 389                         {
 390                                 /* Namen ausgeben */
 391                                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 392                         }
 393                         if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED;
 394
 395                         /* naechsten Namen ermitteln */
 396                         ptr = strtok( NULL, "," );
 397                 }
 398                 return CONNECTED;
 399         }
 400
 401         /* alle Channels durchgehen */
 402         chan = Channel_First( );
 403         while( chan )
 404         {
 405                 /* Namen ausgeben */
 406                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 407
 408                 /* naechster Channel */
 409                 chan = Channel_Next( chan );
 410         }
 411
 412         /* Nun noch alle Clients ausgeben, die in keinem Channel sind */
 413         c = Client_First( );
 414         snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 415         while( c )
 416         {
 417                 if(( Client_Type( c ) == CLIENT_USER ) && ( Channel_FirstChannelOf( c ) == NULL ) && ( ! strchr( Client_Modes( c ), 'i' )))
 418                 {
 419                         /* Okay, das ist ein User: anhaengen */
 420                         if( rpl[strlen( rpl ) - 1] != ':' ) strlcat( rpl, " ", sizeof( rpl ));
 421                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 422
 423                         if( strlen( rpl ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
 424                         {
 425                                 /* Zeile wird zu lang: senden! */
 426                                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 427                                 snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 428                         }
 429                 }
 430
 431                 /* naechster Client */
 432                 c = Client_Next( c );
 433         }
 434         if( rpl[strlen( rpl ) - 1] != ':')
 435         {
 436                 /* es wurden User gefunden */
 437                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 438         }
 439
 440         IRC_SetPenalty( from, 1 );
 441         return IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), "*" );
 442 } /* IRC_NAMES */
 443
 444
 445 static unsigned int
 446 t_diff(time_t *t, const time_t d)
 447 {
 448         time_t diff, remain;
 449
 450         diff = *t / d;
 451         remain = diff * d;
 452         *t -= remain;
 453
 454         return diff;
 455 }
 456
 457
 458 static unsigned int
 459 uptime_days(time_t *now)
 460 {
 461         return t_diff(now, 60 * 60 * 24);
 462 }
 463
 464
 465 static unsigned int
 466 uptime_hrs(time_t *now)
 467 {
 468         return t_diff(now, 60 * 60);
 469 }
 470
 471
 472 static unsigned int
 473 uptime_mins(time_t *now)
 474 {
 475          return t_diff(now, 60);
 476 }
 477
 478
 479 GLOBAL bool
 480 IRC_STATS( CLIENT *Client, REQUEST *Req )
 481 {
 482         CLIENT *from, *target, *cl;
 483         CONN_ID con;
 484         char query;
 485         COMMAND *cmd;
 486         time_t time_now;
 487         unsigned int days, hrs, mins;
 488
 489         assert( Client != NULL );
 490         assert( Req != NULL );
 491
 492         /* Falsche Anzahl Parameter? */
 493         if (Req->argc > 2)
 494                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 495
 496         /* From aus Prefix ermitteln */
 497         if (Client_Type(Client) == CLIENT_SERVER)
 498                 from = Client_Search(Req->prefix);
 499         else
 500                 from = Client;
 501
 502         if (! from)
 503                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix);
 504
 505         if (Req->argc == 2) {
 506                 /* an anderen Server forwarden */
 507                 target = Client_Search( Req->argv[1] );
 508                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER ))
 509                         return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 510
 511                 if( target != Client_ThisServer()) {
 512                         /* Ok, anderer Server ist das Ziel: forwarden */
 513                         return IRC_WriteStrClientPrefix( target, from, "STATS %s %s", Req->argv[0], Req->argv[1] );
 514                 }
 515         }
 516
 517         if (Req->argc > 0)
 518                 query = Req->argv[0][0] ? Req->argv[0][0] : '*';
 519         else
 520                 query = '*';
 521
 522         switch (query) {
 523                 case 'l':       /* Links */
 524                 case 'L':
 525                         time_now = time(NULL);
 526                         for (con = Conn_First(); con != NONE ;con = Conn_Next(con)) {
 527                                 cl = Conn_GetClient(con);
 528                                 if (!cl)
 529                                         continue;
 530                                 if ((Client_Type(cl) == CLIENT_SERVER) || (cl == Client)) {
 531                                         /* Server link or our own connection */
 532 #ifdef ZLIB
 533                                         if (Conn_Options(con) & CONN_ZIP) {
 534                                                 if (!IRC_WriteStrClient(from, RPL_STATSLINKINFOZIP_MSG,
 535                                                         Client_ID(from), Client_Mask(cl), Conn_SendQ(con),
 536                                                         Conn_SendMsg(con), Zip_SendBytes(con), Conn_SendBytes(con),
 537                                                         Conn_RecvMsg(con), Zip_RecvBytes(con), Conn_RecvBytes(con), (long)(time_now - Conn_StartTime(con))))
 538                                                                 return DISCONNECTED;
 539                                                 continue;
 540                                         }
 541 #endif
 542                                         if (!IRC_WriteStrClient(from, RPL_STATSLINKINFO_MSG, Client_ID(from),
 543                                                 Client_Mask(cl), Conn_SendQ(con), Conn_SendMsg(con), Conn_SendBytes(con),
 544                                                 Conn_RecvMsg(con), Conn_RecvBytes(con), (long)(time_now - Conn_StartTime(con))))
 545                                                         return DISCONNECTED;
 546                                 }
 547                         }
 548                         break;
 549                 case 'm':       /* IRC-Commands */
 550                 case 'M':
 551                         cmd = Parse_GetCommandStruct( );
 552                         for (; cmd->name ; cmd++) {
 553                                 if (cmd->lcount == 0 && cmd->rcount == 0)
 554                                         continue;
 555                                 if (!IRC_WriteStrClient(from, RPL_STATSCOMMANDS_MSG, Client_ID(from),
 556                                                 cmd->name, cmd->lcount, cmd->bytes, cmd->rcount))
 557                                                         return DISCONNECTED;
 558                         }
 559                         break;
 560                 case 'u':       /* server uptime */
 561                 case 'U':
 562                         time_now = time(NULL) - NGIRCd_Start;
 563                         days = uptime_days(&time_now);
 564                         hrs = uptime_hrs(&time_now);
 565                         mins = uptime_mins(&time_now);
 566                         if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from),
 567                                         days, hrs, mins, (unsigned int) time_now))
 568                                                 return DISCONNECTED;
 569                         break;
 570         }
 571
 572         IRC_SetPenalty(from, 2);
 573         return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG, Client_ID(from), query);
 574 } /* IRC_STATS */
 575
 576
 577 /**
 578  * Handler for the IRC command "SUMMON".
 579  * See RFC 2812 section 4.5. ngIRCd doesn't implement this functionality and
 580  * therefore answers with ERR_SUMMONDISABLED.
 581  */
 582 GLOBAL bool
 583 IRC_SUMMON(CLIENT * Client, REQUEST * Req)
 584 {
 585         return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
 586                                   Client_ID(Client), Req->command);
 587 } /* IRC_SUMMON */
 588
 589
 590 GLOBAL bool
 591 IRC_TIME( CLIENT *Client, REQUEST *Req )
 592 {
 593         CLIENT *from, *target;
 594         char t_str[64];
 595         time_t t;
 596
 597         assert( Client != NULL );
 598         assert( Req != NULL );
 599
 600         /* Falsche Anzahl Parameter? */
 601         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 602
 603         /* From aus Prefix ermitteln */
 604         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 605         else from = Client;
 606         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 607
 608         if( Req->argc == 1 )
 609         {
 610                 /* an anderen Server forwarden */
 611                 target = Client_Search( Req->argv[0] );
 612                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] );
 613
 614                 if( target != Client_ThisServer( ))
 615                 {
 616                         /* Ok, anderer Server ist das Ziel: forwarden */
 617                         return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] );
 618                 }
 619         }
 620
 621         t = time( NULL );
 622         (void)strftime( t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime( &t ));
 623         return IRC_WriteStrClient( from, RPL_TIME_MSG, Client_ID( from ), Client_ID( Client_ThisServer( )), t_str );
 624 } /* IRC_TIME */
 625
 626
 627 GLOBAL bool
 628 IRC_USERHOST( CLIENT *Client, REQUEST *Req )
 629 {
 630         char rpl[COMMAND_LEN];
 631         CLIENT *c;
 632         int max, i;
 633
 634         assert( Client != NULL );
 635         assert( Req != NULL );
 636
 637         /* Falsche Anzahl Parameter? */
 638         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 639
 640         if( Req->argc > 5 ) max = 5;
 641         else max = Req->argc;
 642
 643         strlcpy( rpl, RPL_USERHOST_MSG, sizeof rpl );
 644         for( i = 0; i < max; i++ )
 645         {
 646                 c = Client_Search( Req->argv[i] );
 647                 if( c && ( Client_Type( c ) == CLIENT_USER ))
 648                 {
 649                         /* Dieser Nick ist "online" */
 650                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 651                         if( Client_HasMode( c, 'o' )) strlcat( rpl, "*", sizeof( rpl ));
 652                         strlcat( rpl, "=", sizeof( rpl ));
 653                         if( Client_HasMode( c, 'a' )) strlcat( rpl, "-", sizeof( rpl ));
 654                         else strlcat( rpl, "+", sizeof( rpl ));
 655                         strlcat( rpl, Client_User( c ), sizeof( rpl ));
 656                         strlcat( rpl, "@", sizeof( rpl ));
 657                         strlcat( rpl, Client_Hostname( c ), sizeof( rpl ));
 658                         strlcat( rpl, " ", sizeof( rpl ));
 659                 }
 660         }
 661         ngt_TrimLastChr( rpl, ' ');
 662
 663         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 664 } /* IRC_USERHOST */
 665
 666
 667 /**
 668  * Handler for the IRC command "USERS".
 669  * See RFC 2812 section 4.6. As suggested there the command is disabled.
 670  */
 671 GLOBAL bool
 672 IRC_USERS(CLIENT * Client, REQUEST * Req)
 673 {
 674         return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
 675                                   Client_ID(Client), Req->command);
 676 } /* IRC_USERS */
 677
 678
 679 GLOBAL bool
 680 IRC_VERSION( CLIENT *Client, REQUEST *Req )
 681 {
 682         CLIENT *target, *prefix;
 683
 684         assert( Client != NULL );
 685         assert( Req != NULL );
 686
 687         /* Falsche Anzahl Parameter? */
 688         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 689
 690         /* Ziel suchen */
 691         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
 692         else target = Client_ThisServer( );
 693
 694         /* Prefix ermitteln */
 695         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
 696         else prefix = Client;
 697         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 698
 699         /* An anderen Server weiterleiten? */
 700         if( target != Client_ThisServer( ))
 701         {
 702                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
 703
 704                 /* forwarden */
 705                 IRC_WriteStrClientPrefix( target, prefix, "VERSION %s", Req->argv[0] );
 706                 return CONNECTED;
 707         }
 708
 709         /* send version information */
 710         IRC_SetPenalty(Client, 1);
 711         return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix),
 712                                   PACKAGE_NAME, PACKAGE_VERSION,
 713                                   NGIRCd_DebugLevel, Conf_ServerName,
 714                                   NGIRCd_VersionAddition);
 715 } /* IRC_VERSION */
 716
 717
 718 static bool
 719 write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags)
 720 {
 721         return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client), channelname,
 722                         Client_User(c), Client_Hostname(c), Client_ID(Client_Introducer(c)), Client_ID(c),
 723                         flags, Client_Hops(c), Client_Info(c));
 724 }
 725
 726
 727 static const char *
 728 who_flags_status(const char *client_modes)
 729 {
 730         if (strchr(client_modes, 'a'))
 731                 return "G"; /* away */
 732         return "H";
 733 }
 734
 735
 736 static const char *
 737 who_flags_qualifier(const char *chan_user_modes)
 738 {
 739         if (strchr(chan_user_modes, 'o'))
 740                 return "@";
 741         else if (strchr(chan_user_modes, 'v'))
 742                 return "+";
 743         return "";
 744 }
 745
 746
 747 static bool
 748 IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 749 {
 750         bool is_visible, is_member, is_ircop;
 751         CL2CHAN *cl2chan;
 752         const char *client_modes;
 753         const char *chan_user_modes;
 754         char flags[8];
 755         CLIENT *c;
 756
 757         assert( Client != NULL );
 758         assert( Chan != NULL );
 759
 760         is_member = Channel_IsMemberOf(Chan, Client);
 761
 762         /* Secret channel? */
 763         if (!is_member && strchr(Channel_Modes(Chan), 's'))
 764                 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 765
 766         cl2chan = Channel_FirstMember(Chan);
 767         for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
 768                 c = Channel_GetClient(cl2chan);
 769
 770                 client_modes = Client_Modes(c);
 771                 is_ircop = strchr(client_modes, 'o') != NULL;
 772                 if (OnlyOps && !is_ircop)
 773                         continue;
 774
 775                 is_visible = strchr(client_modes, 'i') == NULL;
 776                 if (is_member || is_visible) {
 777                         strcpy(flags, who_flags_status(client_modes));
 778                         if (is_ircop)
 779                                 strlcat(flags, "*", sizeof(flags));
 780
 781                         chan_user_modes = Channel_UserModes(Chan, c);
 782                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 783
 784                         if (!write_whoreply(Client, c, Channel_Name(Chan), flags))
 785                                 return DISCONNECTED;
 786                 }
 787         }
 788         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 789 } /* IRC_Send_WHO */
 790
 791
 792 GLOBAL bool
 793 IRC_WHO( CLIENT *Client, REQUEST *Req )
 794 {
 795         bool only_ops, have_arg, client_match;
 796         const char *channelname, *client_modes, *chan_user_modes;
 797         char pattern[COMMAND_LEN];
 798         char flags[4];
 799         CL2CHAN *cl2chan;
 800         CHANNEL *chan, *cn;
 801         CLIENT *c;
 802
 803         assert( Client != NULL );
 804         assert( Req != NULL );
 805
 806         if (Req->argc > 2)
 807                 return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 808
 809         only_ops = false;
 810         have_arg = false;
 811
 812         if (Req->argc == 2) {
 813                 if (strcmp(Req->argv[1], "o") == 0)
 814                         only_ops = true;
 815 #ifdef STRICT_RFC
 816                 else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 817 #endif
 818         }
 819
 820         IRC_SetPenalty(Client, 1);
 821         if (Req->argc >= 1) { /* Channel or Mask. */
 822                 chan = Channel_Search(Req->argv[0]);
 823                 if (chan)
 824                         return IRC_Send_WHO(Client, chan, only_ops);
 825                 if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */
 826                         have_arg = true;
 827                         strlcpy(pattern, Req->argv[0], sizeof(pattern));
 828                         ngt_LowerStr(pattern);
 829                         IRC_SetPenalty(Client, 3);
 830                 }
 831         }
 832
 833         for (c = Client_First(); c != NULL; c = Client_Next(c)) {
 834                 if (Client_Type(c) != CLIENT_USER)
 835                         continue;
 836                  /*
 837                   * RFC 2812, 3.6.1:
 838                   * In the absence of the parameter, all visible (users who aren't
 839                   * invisible (user mode +i) and who don't have a common channel
 840                   * with the requesting client) are listed.
 841                   *
 842                   * The same result can be achieved by using a [sic] of "0"
 843                   * or any wildcard which will end up matching every visible user.
 844                   *
 845                   * The [sic] passed to WHO is matched against users' host, server, real name and
 846                   * nickname if the channel cannot be found.
 847                   */
 848                 client_modes = Client_Modes(c);
 849                 if (strchr(client_modes, 'i'))
 850                         continue;
 851
 852                 if (only_ops && !strchr(client_modes, 'o'))
 853                         continue;
 854
 855                 if (have_arg) { /* match pattern against user host/server/name/nick */
 856                         client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */
 857                         if (!client_match)
 858                                 client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */
 859                         if (!client_match)
 860                                 client_match = Match(Req->argv[0], Client_Info(c)); /* realname */
 861                         if (!client_match)
 862                                 client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */
 863
 864                         if (!client_match) /* This isn't the client you're looking for */
 865                                 continue;
 866                 }
 867
 868                 strcpy(flags, who_flags_status(client_modes));
 869
 870                 if (strchr(client_modes, 'o')) /* this client is an operator */
 871                         strlcat(flags, "*", sizeof(flags));
 872
 873                 /* Search suitable channel */
 874                 cl2chan = Channel_FirstChannelOf(c);
 875                 while (cl2chan) {
 876                         cn = Channel_GetChannel(cl2chan);
 877                         if (Channel_IsMemberOf(cn, Client) ||
 878                                     !strchr(Channel_Modes(cn), 's'))
 879                         {
 880                                 channelname = Channel_Name(cn);
 881                                 break;
 882                         }
 883                         cl2chan = Channel_NextChannelOf(c, cl2chan);
 884                 }
 885                 if (cl2chan) {
 886                         chan = Channel_GetChannel(cl2chan);
 887                         chan_user_modes = Channel_UserModes(chan, c);
 888                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 889                 } else
 890                         channelname = "*";
 891
 892                 if (!write_whoreply(Client, c, channelname, flags))
 893                         return DISCONNECTED;
 894         }
 895
 896         if (Req->argc > 0)
 897                 channelname = Req->argv[0];
 898         else
 899                 channelname = "*";
 900
 901         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname);
 902 } /* IRC_WHO */
 903
 904
 905 GLOBAL bool
 906 IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 907 {
 908         CLIENT *from, *target, *c;
 909         char str[LINE_LEN + 1];
 910         CL2CHAN *cl2chan;
 911         CHANNEL *chan;
 912
 913         assert( Client != NULL );
 914         assert( Req != NULL );
 915
 916         /* Bad number of parameters? */
 917         if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 918
 919         /* Search client */
 920         c = Client_Search( Req->argv[Req->argc - 1] );
 921         if(( ! c ) || ( Client_Type( c ) != CLIENT_USER )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[Req->argc - 1] );
 922
 923         /* Search sender of the WHOIS */
 924         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 925         else from = Client;
 926         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 927
 928         /* Forward to other server? */
 929         if( Req->argc > 1 )
 930         {
 931                 /* Search target server (can be specified as nick of that server!) */
 932                 target = Client_Search( Req->argv[0] );
 933                 if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 934         }
 935         else target = Client_ThisServer( );
 936
 937         assert( target != NULL );
 938
 939         if(( Client_NextHop( target ) != Client_ThisServer( )) && ( Client_Type( Client_NextHop( target )) == CLIENT_SERVER )) return IRC_WriteStrClientPrefix( target, from, "WHOIS %s :%s", Req->argv[0], Req->argv[1] );
 940
 941         /* Nick, user and name */
 942         if( ! IRC_WriteStrClient( from, RPL_WHOISUSER_MSG, Client_ID( from ), Client_ID( c ), Client_User( c ), Client_Hostname( c ), Client_Info( c ))) return DISCONNECTED;
 943
 944         /* Server */
 945         if( ! IRC_WriteStrClient( from, RPL_WHOISSERVER_MSG, Client_ID( from ), Client_ID( c ), Client_ID( Client_Introducer( c )), Client_Info( Client_Introducer( c )))) return DISCONNECTED;
 946
 947         /* Channels */
 948         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 949         cl2chan = Channel_FirstChannelOf( c );
 950         while( cl2chan )
 951         {
 952                 chan = Channel_GetChannel( cl2chan );
 953                 assert( chan != NULL );
 954
 955                 /* next */
 956                 cl2chan = Channel_NextChannelOf( c, cl2chan );
 957
 958                 /* Secret channel? */
 959                 if (strchr(Channel_Modes(chan), 's')
 960                     && !Channel_IsMemberOf(chan, Client))
 961                         continue;
 962
 963                 /* Local channel and request is not from a user? */
 964                 if (Client_Type(Client) == CLIENT_SERVER
 965                     && Channel_IsLocal(chan))
 966                         continue;
 967
 968                 /* Concatenate channel names */
 969                 if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
 970                 if( strchr( Channel_UserModes( chan, c ), 'o' )) strlcat( str, "@", sizeof( str ));
 971                 else if( strchr( Channel_UserModes( chan, c ), 'v' )) strlcat( str, "+", sizeof( str ));
 972                 strlcat( str, Channel_Name( chan ), sizeof( str ));
 973
 974                 if( strlen( str ) > ( LINE_LEN - CHANNEL_NAME_LEN - 4 ))
 975                 {
 976                         /* Line becomes too long: send it! */
 977                         if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 978                         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 979                 }
 980         }
 981         if( str[strlen( str ) - 1] != ':')
 982         {
 983                 /* There is data left to send: */
 984                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 985         }
 986
 987         /* IRC-Operator? */
 988         if( Client_HasMode( c, 'o' ))
 989         {
 990                 if( ! IRC_WriteStrClient( from, RPL_WHOISOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
 991         }
 992
 993         /* Idle and signon time (local clients only!) */
 994         if (Client_Conn(c) > NONE ) {
 995                 if (! IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
 996                         Client_ID(from), Client_ID(c),
 997                         (unsigned long)Conn_GetIdle(Client_Conn(c)),
 998                         (unsigned long)Conn_GetSignon(Client_Conn(c))))
 999                                 return DISCONNECTED;
1000         }
1001
1002         /* Away? */
1003         if( Client_HasMode( c, 'a' ))
1004         {
1005                 if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( c ), Client_Away( c ))) return DISCONNECTED;
1006         }
1007
1008         /* End of Whois */
1009         return IRC_WriteStrClient( from, RPL_ENDOFWHOIS_MSG, Client_ID( from ), Client_ID( c ));
1010 } /* IRC_WHOIS */
1011
1012
1013 static bool
1014 WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry)
1015 {
1016         char t_str[60];
1017
1018         (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y",
1019                                         localtime(&entry->time));
1020
1021         if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix),
1022                         entry->id, entry->user, entry->host, entry->info))
1023                                 return DISCONNECTED;
1024
1025         return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix),
1026                   entry->id, entry->server, t_str);
1027 }
1028
1029 /**
1030  * IRC "WHOWAS" function.
1031  * This function implements the IRC command "WHOWHAS". It handles local
1032  * requests and request that should be forwarded to other servers.
1033  */
1034 GLOBAL bool
1035 IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
1036 {
1037         CLIENT *target, *prefix;
1038         WHOWAS *whowas;
1039         char tok_buf[COMMAND_LEN];
1040         int max, last, count, i, nc;
1041         const char *nick;
1042
1043         assert( Client != NULL );
1044         assert( Req != NULL );
1045
1046         /* Wrong number of parameters? */
1047         if (Req->argc > 3)
1048                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
1049                                         Client_ID(Client), Req->command);
1050         if (Req->argc < 1)
1051                 return IRC_WriteStrClient(Client, ERR_NONICKNAMEGIVEN_MSG, Client_ID(Client));
1052
1053         /* Search target */
1054         if (Req->argc == 3)
1055                 target = Client_Search(Req->argv[2]);
1056         else
1057                 target = Client_ThisServer();
1058
1059         /* Get prefix */
1060         if (Client_Type(Client) == CLIENT_SERVER)
1061                 prefix = Client_Search(Req->prefix);
1062         else
1063                 prefix = Client;
1064
1065         if (!prefix)
1066                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
1067                                                 Client_ID(Client), Req->prefix);
1068
1069         /* Forward to other server? */
1070         if (target != Client_ThisServer()) {
1071                 if (!target || (Client_Type(target) != CLIENT_SERVER))
1072                         return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
1073                                         Client_ID(prefix), Req->argv[2]);
1074
1075                 /* Forward */
1076                 IRC_WriteStrClientPrefix( target, prefix, "WHOWAS %s %s %s",
1077                                           Req->argv[0], Req->argv[1],
1078                                           Req->argv[2] );
1079                 return CONNECTED;
1080         }
1081
1082         whowas = Client_GetWhowas( );
1083         last = Client_GetLastWhowasIndex( );
1084         if (last < 0)
1085                 last = 0;
1086
1087         max = DEFAULT_WHOWAS;
1088         if (Req->argc > 1) {
1089                 max = atoi(Req->argv[1]);
1090                 if (max < 1)
1091                         max = MAX_WHOWAS;
1092         }
1093
1094         /*
1095          * Break up the nick argument into a list of nicks, if applicable
1096          * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG.
1097          */
1098         strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf));
1099         nick = strtok(tok_buf, ",");
1100
1101         for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) {
1102                 nc = 0;
1103                 do {
1104                         /* Used entry? */
1105                         if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) {
1106                                 if (!WHOWAS_EntryWrite(prefix, &whowas[i]))
1107                                         return DISCONNECTED;
1108                                 nc++;
1109                                 count++;
1110                         }
1111                         /* previous entry */
1112                         i--;
1113
1114                         /* "underflow", wrap around */
1115                         if (i < 0)
1116                                 i = MAX_WHOWAS - 1;
1117
1118                         if (nc && count >= max)
1119                                 break;
1120                 } while (i != last);
1121
1122                 if (nc == 0 && !IRC_WriteStrClient(prefix, ERR_WASNOSUCHNICK_MSG,
1123                                                 Client_ID(prefix), nick))
1124                         return DISCONNECTED;
1125         }
1126         return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG, Client_ID(prefix), Req->argv[0]);
1127 } /* IRC_WHOWAS */
1128
1129
1130 GLOBAL bool
1131 IRC_Send_LUSERS( CLIENT *Client )
1132 {
1133         unsigned long cnt;
1134 #ifndef STRICT_RFC
1135         unsigned long max;
1136 #endif
1137
1138         assert( Client != NULL );
1139
1140         /* Users, services and serevers in the network */
1141         if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED;
1142
1143         /* Number of IRC operators */
1144         cnt = Client_OperCount( );
1145         if( cnt > 0 )
1146         {
1147                 if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1148         }
1149
1150         /* Unknown connections */
1151         cnt = Client_UnknownCount( );
1152         if( cnt > 0 )
1153         {
1154                 if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1155         }
1156
1157         /* Number of created channels */
1158         if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED;
1159
1160         /* Number of local users, services and servers */
1161         if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED;
1162
1163 #ifndef STRICT_RFC
1164         /* Maximum number of local users */
1165         cnt = Client_MyUserCount();
1166         max = Client_MyMaxUserCount();
1167         if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client),
1168                         cnt, max, cnt, max))
1169                 return DISCONNECTED;
1170         /* Maximum number of users in the network */
1171         cnt = Client_UserCount();
1172         max = Client_MaxUserCount();
1173         if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client),
1174                         cnt, max, cnt, max))
1175                 return DISCONNECTED;
1176 #endif
1177
1178         return CONNECTED;
1179 } /* IRC_Send_LUSERS */
1180
1181
1182 static bool
1183 Show_MOTD_Start(CLIENT *Client)
1184 {
1185         return IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG,
1186                 Client_ID( Client ), Client_ID( Client_ThisServer( )));
1187 }
1188
1189 static bool
1190 Show_MOTD_Sendline(CLIENT *Client, const char *msg)
1191 {
1192         return IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID( Client ), msg);
1193 }
1194
1195 static bool
1196 Show_MOTD_End(CLIENT *Client)
1197 {
1198         return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ));
1199 }
1200
1201 #ifdef SSL_SUPPORT
1202 static bool Show_MOTD_SSLInfo(CLIENT *Client)
1203 {
1204         bool ret = true;
1205         char buf[COMMAND_LEN] = "Connected using Cipher ";
1206
1207         if (!Conn_GetCipherInfo(Client_Conn(Client), buf + 23, sizeof buf - 23))
1208                 return true;
1209
1210         if (!Show_MOTD_Sendline(Client, buf))
1211                 ret = false;
1212
1213         return ret;
1214 }
1215 #else
1216 static inline bool Show_MOTD_SSLInfo(UNUSED CLIENT *c) { return true; }
1217 #endif
1218
1219 GLOBAL bool
1220 IRC_Show_MOTD( CLIENT *Client )
1221 {
1222         char line[127];
1223         FILE *fd;
1224
1225         assert( Client != NULL );
1226
1227         if (Conf_MotdPhrase[0]) {
1228                 if (!Show_MOTD_Start(Client))
1229                         return DISCONNECTED;
1230                 if (!Show_MOTD_Sendline(Client, Conf_MotdPhrase))
1231                         return DISCONNECTED;
1232                 goto out;
1233         }
1234
1235         fd = fopen( Conf_MotdFile, "r" );
1236         if( ! fd ) {
1237                 Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
1238                 if (Conn_UsesSSL(Client_Conn(Client))) {
1239                         if (!Show_MOTD_Start(Client))
1240                                 return DISCONNECTED;
1241                         goto out;
1242                 }
1243                 return IRC_WriteStrClient( Client, ERR_NOMOTD_MSG, Client_ID( Client ) );
1244         }
1245
1246         if (!Show_MOTD_Start( Client )) {
1247                 fclose(fd);
1248                 return false;
1249         }
1250
1251         while (fgets( line, (int)sizeof line, fd )) {
1252                 ngt_TrimLastChr( line, '\n');
1253
1254                 if( ! Show_MOTD_Sendline( Client, line)) {
1255                         fclose( fd );
1256                         return false;
1257                 }
1258         }
1259         fclose(fd);
1260 out:
1261         if (!Show_MOTD_SSLInfo(Client))
1262                 return DISCONNECTED;
1263         return Show_MOTD_End(Client);
1264 } /* IRC_Show_MOTD */
1265
1266
1267 GLOBAL bool
1268 IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan )
1269 {
1270         bool is_visible, is_member;
1271         char str[LINE_LEN + 1];
1272         CL2CHAN *cl2chan;
1273         CLIENT *cl;
1274
1275         assert( Client != NULL );
1276         assert( Chan != NULL );
1277
1278         if( Channel_IsMemberOf( Chan, Client )) is_member = true;
1279         else is_member = false;
1280
1281         /* Secret channel? */
1282         if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED;
1283
1284         /* Alle Mitglieder suchen */
1285         snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1286         cl2chan = Channel_FirstMember( Chan );
1287         while( cl2chan )
1288         {
1289                 cl = Channel_GetClient( cl2chan );
1290
1291                 if( strchr( Client_Modes( cl ), 'i' )) is_visible = false;
1292                 else is_visible = true;
1293
1294                 if( is_member || is_visible )
1295                 {
1296                         /* Nick anhaengen */
1297                         if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
1298                         if( strchr( Channel_UserModes( Chan, cl ), 'o' )) strlcat( str, "@", sizeof( str ));
1299                         else if( strchr( Channel_UserModes( Chan, cl ), 'v' )) strlcat( str, "+", sizeof( str ));
1300                         strlcat( str, Client_ID( cl ), sizeof( str ));
1301
1302                         if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
1303                         {
1304                                 /* Zeile wird zu lang: senden! */
1305                                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1306                                 snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1307                         }
1308                 }
1309
1310                 /* naechstes Mitglied suchen */
1311                 cl2chan = Channel_NextMember( Chan, cl2chan );
1312         }
1313         if( str[strlen( str ) - 1] != ':')
1314         {
1315                 /* Es sind noch Daten da, die gesendet werden muessen */
1316                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1317         }
1318
1319         return CONNECTED;
1320 } /* IRC_Send_NAMES */
1321
1322
1323
1324 /**
1325  * Send the ISUPPORT numeric (005).
1326  * This numeric indicates the features that are supported by this server.
1327  * See <http://www.irc.org/tech_docs/005.html> for details.
1328  */
1329 GLOBAL bool
1330 IRC_Send_ISUPPORT PARAMS((CLIENT * Client))
1331 {
1332         if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client),
1333                                 Conf_MaxJoins))
1334                 return DISCONNECTED;
1335         return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
1336                                   CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
1337                                   COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
1338                                   COMMAND_LEN - 113);
1339 } /* IRC_Send_ISUPPORT */
1340
1341
1342 /* -eof- */