src/ngircd/irc-info.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2010 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 "conf.h"
  31 #include "defines.h"
  32 #include "log.h"
  33 #include "messages.h"
  34 #include "match.h"
  35 #include "tool.h"
  36 #include "parse.h"
  37 #include "irc-write.h"
  38
  39 #include "exp.h"
  40 #include "irc-info.h"
  41
  42
  43 GLOBAL bool
  44 IRC_ADMIN(CLIENT *Client, REQUEST *Req )
  45 {
  46         CLIENT *target, *prefix;
  47
  48         assert( Client != NULL );
  49         assert( Req != NULL );
  50
  51         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  52
  53         /* find target ... */
  54         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
  55         else target = Client_ThisServer( );
  56
  57         /* find Prefix */
  58         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
  59         else prefix = Client;
  60         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  61
  62         /* forwad message to another server? */
  63         if( target != Client_ThisServer( ))
  64         {
  65                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
  66
  67                 /* forward */
  68                 IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] );
  69                 return CONNECTED;
  70         }
  71
  72         /* mit Versionsinfo antworten */
  73         if( ! IRC_WriteStrClient( Client, RPL_ADMINME_MSG, Client_ID( prefix ), Conf_ServerName )) return DISCONNECTED;
  74         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC1_MSG, Client_ID( prefix ), Conf_ServerAdmin1 )) return DISCONNECTED;
  75         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC2_MSG, Client_ID( prefix ), Conf_ServerAdmin2 )) return DISCONNECTED;
  76         if( ! IRC_WriteStrClient( Client, RPL_ADMINEMAIL_MSG, Client_ID( prefix ), Conf_ServerAdminMail )) return DISCONNECTED;
  77
  78         IRC_SetPenalty( Client, 1 );
  79         return CONNECTED;
  80 } /* IRC_ADMIN */
  81
  82
  83 /**
  84  * Handler for the IRC command "INFO".
  85  * See RFC 2812 section 3.4.10.
  86  */
  87 GLOBAL bool
  88 IRC_INFO(CLIENT * Client, REQUEST * Req)
  89 {
  90         CLIENT *target, *prefix;
  91         char msg[510];
  92
  93         assert(Client != NULL);
  94         assert(Req != NULL);
  95
  96         /* Wrong number of parameters? */
  97         if (Req->argc > 1)
  98                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
  99                                           Client_ID(Client), Req->command);
 100
 101         /* Determine prefix */
 102         if (Client_Type(Client) == CLIENT_SERVER)
 103                 prefix = Client_Search(Req->prefix);
 104         else
 105                 prefix = Client;
 106         if (!prefix)
 107                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 108                                           Client_ID(Client), Req->prefix);
 109
 110         /* Look for a target */
 111         if (Req->argc > 0)
 112                 target = Client_Search(Req->argv[0]);
 113         else
 114                 target = Client_ThisServer();
 115
 116         /* Make sure that the target is a server */
 117         if (target && Client_Type(target) != CLIENT_SERVER)
 118                 target = Client_Introducer(target);
 119
 120         if (!target)
 121                 return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
 122                                           Client_ID(prefix), Req->argv[0]);
 123
 124         /* Pass on to another server? */
 125         if (target != Client_ThisServer()) {
 126                 IRC_WriteStrClientPrefix(target, prefix, "INFO %s",
 127                                          Req->argv[0]);
 128                 return CONNECTED;
 129         }
 130
 131         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix),
 132                                 NGIRCd_Version))
 133                 return DISCONNECTED;
 134
 135 #if defined(__DATE__) && defined(__TIME__)
 136         snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__);
 137         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 138                 return DISCONNECTED;
 139 #endif
 140
 141         strlcpy(msg, "On-line since ", sizeof(msg));
 142         strlcat(msg, NGIRCd_StartStr, sizeof(msg));
 143         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 144                 return DISCONNECTED;
 145
 146         if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix)))
 147                 return DISCONNECTED;
 148
 149         IRC_SetPenalty(Client, 2);
 150         return CONNECTED;
 151 } /* IRC_INFO */
 152
 153
 154 GLOBAL bool
 155 IRC_ISON( CLIENT *Client, REQUEST *Req )
 156 {
 157         char rpl[COMMAND_LEN];
 158         CLIENT *c;
 159         char *ptr;
 160         int i;
 161
 162         assert( Client != NULL );
 163         assert( Req != NULL );
 164
 165         /* Falsche Anzahl Parameter? */
 166         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 167
 168         strlcpy( rpl, RPL_ISON_MSG, sizeof rpl );
 169         for( i = 0; i < Req->argc; i++ )
 170         {
 171                 ptr = strtok( Req->argv[i], " " );
 172                 while( ptr )
 173                 {
 174                         ngt_TrimStr( ptr );
 175                         c = Client_Search( ptr );
 176                         if( c && ( Client_Type( c ) == CLIENT_USER ))
 177                         {
 178                                 /* Dieser Nick ist "online" */
 179                                 strlcat( rpl, ptr, sizeof( rpl ));
 180                                 strlcat( rpl, " ", sizeof( rpl ));
 181                         }
 182                         ptr = strtok( NULL, " " );
 183                 }
 184         }
 185         ngt_TrimLastChr(rpl, ' ');
 186
 187         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 188 } /* IRC_ISON */
 189
 190
 191 GLOBAL bool
 192 IRC_LINKS( CLIENT *Client, REQUEST *Req )
 193 {
 194         CLIENT *target, *from, *c;
 195         char *mask;
 196
 197         assert( Client != NULL );
 198         assert( Req != NULL );
 199
 200         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 201
 202         /* Server-Mask ermitteln */
 203         if( Req->argc > 0 ) mask = Req->argv[Req->argc - 1];
 204         else mask = "*";
 205
 206         /* Absender ermitteln */
 207         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 208         else from = Client;
 209         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 210
 211         /* An anderen Server forwarden? */
 212         if( Req->argc == 2 )
 213         {
 214                 target = Client_Search( Req->argv[0] );
 215                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 216                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LINKS %s %s", Req->argv[0], Req->argv[1] );
 217         }
 218
 219         /* Wer ist der Absender? */
 220         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 221         else target = Client;
 222         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 223
 224         c = Client_First( );
 225         while( c )
 226         {
 227                 if( Client_Type( c ) == CLIENT_SERVER )
 228                 {
 229                         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;
 230                 }
 231                 c = Client_Next( c );
 232         }
 233
 234         IRC_SetPenalty( target, 1 );
 235         return IRC_WriteStrClient( target, RPL_ENDOFLINKS_MSG, Client_ID( target ), mask );
 236 } /* IRC_LINKS */
 237
 238
 239 GLOBAL bool
 240 IRC_LUSERS( CLIENT *Client, REQUEST *Req )
 241 {
 242         CLIENT *target, *from;
 243
 244         assert( Client != NULL );
 245         assert( Req != NULL );
 246
 247         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 248
 249         /* Absender ermitteln */
 250         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 251         else from = Client;
 252         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 253
 254         /* An anderen Server forwarden? */
 255         if( Req->argc == 2 )
 256         {
 257                 target = Client_Search( Req->argv[1] );
 258                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 259                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LUSERS %s %s", Req->argv[0], Req->argv[1] );
 260         }
 261
 262         /* Wer ist der Absender? */
 263         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 264         else target = Client;
 265         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 266
 267         IRC_Send_LUSERS( target );
 268
 269         IRC_SetPenalty( target, 1 );
 270         return CONNECTED;
 271 } /* IRC_LUSERS */
 272
 273
 274 /**
 275  * Handler for the IRC command "SERVLIST".
 276  * List registered services, see RFC 2811, section 3.5.1: the syntax is
 277  * "SERVLIST [<mask> [<type>]]".
 278  */
 279 GLOBAL bool
 280 IRC_SERVLIST(CLIENT *Client, REQUEST *Req)
 281 {
 282         CLIENT *c;
 283
 284         assert(Client != NULL);
 285         assert(Req != NULL);
 286
 287         if (Req->argc > 2)
 288                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 289                                           Client_ID(Client), Req->command);
 290
 291         if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) {
 292                 for (c = Client_First(); c!= NULL; c = Client_Next(c)) {
 293                         if (Client_Type(c) != CLIENT_SERVICE)
 294                                 continue;
 295                         if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0],
 296                                                                   Client_ID(c)))
 297                                 continue;
 298                         if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG,
 299                                         Client_ID(Client), Client_Mask(c),
 300                                         Client_Mask(Client_Introducer(c)), "*",
 301                                         0, Client_Hops(c), Client_Info(c)))
 302                                 return DISCONNECTED;
 303                 }
 304         }
 305
 306         return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client),
 307                                   Req->argc > 0 ? Req->argv[0] : "*",
 308                                   Req->argc > 1 ? Req->argv[1] : "0");
 309 } /* IRC_SERVLIST */
 310
 311
 312 GLOBAL bool
 313 IRC_MOTD( CLIENT *Client, REQUEST *Req )
 314 {
 315         CLIENT *from, *target;
 316
 317         assert( Client != NULL );
 318         assert( Req != NULL );
 319
 320         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 321
 322         /* From aus Prefix ermitteln */
 323         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 324         else from = Client;
 325         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 326
 327         if( Req->argc == 1 )
 328         {
 329                 /* forward? */
 330                 target = Client_Search( Req->argv[0] );
 331                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 332
 333                 if( target != Client_ThisServer( ))
 334                 {
 335                         /* Ok, anderer Server ist das Ziel: forwarden */
 336                         return IRC_WriteStrClientPrefix( target, from, "MOTD %s", Req->argv[0] );
 337                 }
 338         }
 339
 340         IRC_SetPenalty( from, 3 );
 341         return IRC_Show_MOTD( from );
 342 } /* IRC_MOTD */
 343
 344
 345 GLOBAL bool
 346 IRC_NAMES( CLIENT *Client, REQUEST *Req )
 347 {
 348         char rpl[COMMAND_LEN], *ptr;
 349         CLIENT *target, *from, *c;
 350         CHANNEL *chan;
 351
 352         assert( Client != NULL );
 353         assert( Req != NULL );
 354
 355         if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 356
 357         /* use prefix to determine "From" */
 358         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 359         else from = Client;
 360         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 361
 362         if( Req->argc == 2 )
 363         {
 364                 /* forward to another server? */
 365                 target = Client_Search( Req->argv[1] );
 366                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 367
 368                 if( target != Client_ThisServer( )) {
 369                         /* target is another server, forward */
 370                         return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] );
 371                 }
 372         }
 373
 374         if( Req->argc > 0 )
 375         {
 376                 /* bestimmte Channels durchgehen */
 377                 ptr = strtok( Req->argv[0], "," );
 378                 while( ptr )
 379                 {
 380                         chan = Channel_Search( ptr );
 381                         if( chan )
 382                         {
 383                                 /* print name */
 384                                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 385                         }
 386                         if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED;
 387
 388                         /* get next channel name */
 389                         ptr = strtok( NULL, "," );
 390                 }
 391                 return CONNECTED;
 392         }
 393
 394         chan = Channel_First( );
 395         while( chan )
 396         {
 397                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 398
 399                 chan = Channel_Next( chan );
 400         }
 401
 402         /* Now print all clients which are not in any channel */
 403         c = Client_First( );
 404         snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 405         while( c )
 406         {
 407                 if(( Client_Type( c ) == CLIENT_USER ) && ( Channel_FirstChannelOf( c ) == NULL ) && ( ! strchr( Client_Modes( c ), 'i' )))
 408                 {
 409                         /* its a user, concatenate ... */
 410                         if( rpl[strlen( rpl ) - 1] != ':' ) strlcat( rpl, " ", sizeof( rpl ));
 411                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 412
 413                         if( strlen( rpl ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
 414                         {
 415                                 /* Line is gwoing too long, send now */
 416                                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 417                                 snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 418                         }
 419                 }
 420
 421                 c = Client_Next( c );
 422         }
 423         if( rpl[strlen( rpl ) - 1] != ':')
 424         {
 425                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 426         }
 427
 428         IRC_SetPenalty( from, 1 );
 429         return IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), "*" );
 430 } /* IRC_NAMES */
 431
 432
 433 static unsigned int
 434 t_diff(time_t *t, const time_t d)
 435 {
 436         time_t diff, remain;
 437
 438         diff = *t / d;
 439         remain = diff * d;
 440         *t -= remain;
 441
 442         return (unsigned int)diff;
 443 }
 444
 445
 446 static unsigned int
 447 uptime_days(time_t *now)
 448 {
 449         return t_diff(now, 60 * 60 * 24);
 450 }
 451
 452
 453 static unsigned int
 454 uptime_hrs(time_t *now)
 455 {
 456         return t_diff(now, 60 * 60);
 457 }
 458
 459
 460 static unsigned int
 461 uptime_mins(time_t *now)
 462 {
 463          return t_diff(now, 60);
 464 }
 465
 466
 467 /**
 468  * Handler for the IRC command "STATS".
 469  * See RFC 2812 section 3.4.4.
 470  */
 471 GLOBAL bool
 472 IRC_STATS( CLIENT *Client, REQUEST *Req )
 473 {
 474         CLIENT *from, *target, *cl;
 475         CONN_ID con;
 476         char query;
 477         COMMAND *cmd;
 478         time_t time_now;
 479         unsigned int days, hrs, mins;
 480
 481         assert(Client != NULL);
 482         assert(Req != NULL);
 483
 484         if (Req->argc > 2)
 485                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 486                                           Client_ID(Client), Req->command);
 487
 488         /* use prefix to determine "From" */
 489         if (Client_Type(Client) == CLIENT_SERVER)
 490                 from = Client_Search(Req->prefix);
 491         else
 492                 from = Client;
 493
 494         if (!from)
 495                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 496                                           Client_ID(Client), Req->prefix);
 497
 498         if (Req->argc == 2) {
 499                 /* forward to another server? */
 500                 target = Client_Search(Req->argv[1]);
 501                 if ((!target) || (Client_Type(target) != CLIENT_SERVER))
 502                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 503                                                  Client_ID(from), Req->argv[1]);
 504
 505                 if (target != Client_ThisServer()) {
 506                         /* forward to another server */
 507                         return IRC_WriteStrClientPrefix(target, from,
 508                                      "STATS %s %s", Req->argv[0], Req->argv[1]);
 509                 }
 510         }
 511
 512         if (Req->argc > 0)
 513                 query = Req->argv[0][0] ? Req->argv[0][0] : '*';
 514         else
 515                 query = '*';
 516
 517         switch (query) {
 518         case 'l':       /* Link status (servers and own link) */
 519         case 'L':
 520                 time_now = time(NULL);
 521                 for (con = Conn_First(); con != NONE; con = Conn_Next(con)) {
 522                         cl = Conn_GetClient(con);
 523                         if (!cl)
 524                                 continue;
 525                         if ((Client_Type(cl) == CLIENT_SERVER)
 526                             || (cl == Client)) {
 527                                 /* Server link or our own connection */
 528 #ifdef ZLIB
 529                                 if (Conn_Options(con) & CONN_ZIP) {
 530                                         if (!IRC_WriteStrClient
 531                                             (from, RPL_STATSLINKINFOZIP_MSG,
 532                                              Client_ID(from), Client_Mask(cl),
 533                                              Conn_SendQ(con), Conn_SendMsg(con),
 534                                              Zip_SendBytes(con),
 535                                              Conn_SendBytes(con),
 536                                              Conn_RecvMsg(con),
 537                                              Zip_RecvBytes(con),
 538                                              Conn_RecvBytes(con),
 539                                              (long)(time_now - Conn_StartTime(con))))
 540                                                 return DISCONNECTED;
 541                                         continue;
 542                                 }
 543 #endif
 544                                 if (!IRC_WriteStrClient
 545                                     (from, RPL_STATSLINKINFO_MSG,
 546                                      Client_ID(from), Client_Mask(cl),
 547                                      Conn_SendQ(con), Conn_SendMsg(con),
 548                                      Conn_SendBytes(con), Conn_RecvMsg(con),
 549                                      Conn_RecvBytes(con),
 550                                      (long)(time_now - Conn_StartTime(con))))
 551                                         return DISCONNECTED;
 552                         }
 553                 }
 554                 break;
 555         case 'm':       /* IRC command status (usage count) */
 556         case 'M':
 557                 cmd = Parse_GetCommandStruct();
 558                 for (; cmd->name; cmd++) {
 559                         if (cmd->lcount == 0 && cmd->rcount == 0)
 560                                 continue;
 561                         if (!IRC_WriteStrClient
 562                             (from, RPL_STATSCOMMANDS_MSG, Client_ID(from),
 563                              cmd->name, cmd->lcount, cmd->bytes, cmd->rcount))
 564                                 return DISCONNECTED;
 565                 }
 566                 break;
 567         case 'u':       /* Server uptime */
 568         case 'U':
 569                 time_now = time(NULL) - NGIRCd_Start;
 570                 days = uptime_days(&time_now);
 571                 hrs = uptime_hrs(&time_now);
 572                 mins = uptime_mins(&time_now);
 573                 if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from),
 574                                        days, hrs, mins, (unsigned int)time_now))
 575                         return DISCONNECTED;
 576                 break;
 577         }
 578
 579         IRC_SetPenalty(from, 2);
 580         return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG,
 581                                   Client_ID(from), query);
 582 } /* IRC_STATS */
 583
 584
 585 /**
 586  * Handler for the IRC command "SUMMON".
 587  * See RFC 2812 section 4.5. ngIRCd doesn't implement this functionality and
 588  * therefore answers with ERR_SUMMONDISABLED.
 589  */
 590 GLOBAL bool
 591 IRC_SUMMON(CLIENT * Client, REQUEST * Req)
 592 {
 593         return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
 594                                   Client_ID(Client), Req->command);
 595 } /* IRC_SUMMON */
 596
 597
 598 GLOBAL bool
 599 IRC_TIME( CLIENT *Client, REQUEST *Req )
 600 {
 601         CLIENT *from, *target;
 602         char t_str[64];
 603         time_t t;
 604
 605         assert( Client != NULL );
 606         assert( Req != NULL );
 607
 608         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 609
 610         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 611         else from = Client;
 612         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 613
 614         if( Req->argc == 1 )
 615         {
 616                 target = Client_Search( Req->argv[0] );
 617                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] );
 618
 619                 if( target != Client_ThisServer( ))
 620                 {
 621                         return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] );
 622                 }
 623         }
 624
 625         t = time( NULL );
 626         (void)strftime( t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime( &t ));
 627         return IRC_WriteStrClient( from, RPL_TIME_MSG, Client_ID( from ), Client_ID( Client_ThisServer( )), t_str );
 628 } /* IRC_TIME */
 629
 630
 631 GLOBAL bool
 632 IRC_USERHOST( CLIENT *Client, REQUEST *Req )
 633 {
 634         char rpl[COMMAND_LEN];
 635         CLIENT *c;
 636         int max, i;
 637
 638         assert( Client != NULL );
 639         assert( Req != NULL );
 640
 641         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 642
 643         if( Req->argc > 5 ) max = 5;
 644         else max = Req->argc;
 645
 646         strlcpy( rpl, RPL_USERHOST_MSG, sizeof rpl );
 647         for( i = 0; i < max; i++ )
 648         {
 649                 c = Client_Search( Req->argv[i] );
 650                 if( c && ( Client_Type( c ) == CLIENT_USER ))
 651                 {
 652                         /* This Nick is "online" */
 653                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 654                         if( Client_HasMode( c, 'o' )) strlcat( rpl, "*", sizeof( rpl ));
 655                         strlcat( rpl, "=", sizeof( rpl ));
 656                         if( Client_HasMode( c, 'a' )) strlcat( rpl, "-", sizeof( rpl ));
 657                         else strlcat( rpl, "+", sizeof( rpl ));
 658                         strlcat( rpl, Client_User( c ), sizeof( rpl ));
 659                         strlcat( rpl, "@", sizeof( rpl ));
 660                         strlcat( rpl, Client_Hostname( c ), sizeof( rpl ));
 661                         strlcat( rpl, " ", sizeof( rpl ));
 662                 }
 663         }
 664         ngt_TrimLastChr( rpl, ' ');
 665
 666         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 667 } /* IRC_USERHOST */
 668
 669
 670 /**
 671  * Handler for the IRC command "USERS".
 672  * See RFC 2812 section 4.6. As suggested there the command is disabled.
 673  */
 674 GLOBAL bool
 675 IRC_USERS(CLIENT * Client, REQUEST * Req)
 676 {
 677         return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
 678                                   Client_ID(Client), Req->command);
 679 } /* IRC_USERS */
 680
 681
 682 GLOBAL bool
 683 IRC_VERSION( CLIENT *Client, REQUEST *Req )
 684 {
 685         CLIENT *target, *prefix;
 686
 687         assert( Client != NULL );
 688         assert( Req != NULL );
 689
 690         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 691
 692         /* Ziel suchen */
 693         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
 694         else target = Client_ThisServer( );
 695
 696         /* Prefix ermitteln */
 697         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
 698         else prefix = Client;
 699         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 700
 701         /* An anderen Server weiterleiten? */
 702         if( target != Client_ThisServer( ))
 703         {
 704                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
 705
 706                 /* forwarden */
 707                 IRC_WriteStrClientPrefix( target, prefix, "VERSION %s", Req->argv[0] );
 708                 return CONNECTED;
 709         }
 710
 711         /* send version information */
 712         IRC_SetPenalty(Client, 1);
 713         return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix),
 714                                   PACKAGE_NAME, PACKAGE_VERSION,
 715                                   NGIRCd_DebugLevel, Conf_ServerName,
 716                                   NGIRCd_VersionAddition);
 717 } /* IRC_VERSION */
 718
 719
 720 static bool
 721 write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags)
 722 {
 723         return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client), channelname,
 724                         Client_User(c), Client_Hostname(c), Client_ID(Client_Introducer(c)), Client_ID(c),
 725                         flags, Client_Hops(c), Client_Info(c));
 726 }
 727
 728
 729 static const char *
 730 who_flags_status(const char *client_modes)
 731 {
 732         if (strchr(client_modes, 'a'))
 733                 return "G"; /* away */
 734         return "H";
 735 }
 736
 737
 738 static const char *
 739 who_flags_qualifier(const char *chan_user_modes)
 740 {
 741         if (strchr(chan_user_modes, 'o'))
 742                 return "@";
 743         else if (strchr(chan_user_modes, 'v'))
 744                 return "+";
 745         return "";
 746 }
 747
 748
 749 static bool
 750 IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 751 {
 752         bool is_visible, is_member, is_ircop;
 753         CL2CHAN *cl2chan;
 754         const char *client_modes;
 755         const char *chan_user_modes;
 756         char flags[8];
 757         CLIENT *c;
 758
 759         assert( Client != NULL );
 760         assert( Chan != NULL );
 761
 762         is_member = Channel_IsMemberOf(Chan, Client);
 763
 764         /* Secret channel? */
 765         if (!is_member && strchr(Channel_Modes(Chan), 's'))
 766                 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 767
 768         cl2chan = Channel_FirstMember(Chan);
 769         for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
 770                 c = Channel_GetClient(cl2chan);
 771
 772                 client_modes = Client_Modes(c);
 773                 is_ircop = strchr(client_modes, 'o') != NULL;
 774                 if (OnlyOps && !is_ircop)
 775                         continue;
 776
 777                 is_visible = strchr(client_modes, 'i') == NULL;
 778                 if (is_member || is_visible) {
 779                         strcpy(flags, who_flags_status(client_modes));
 780                         if (is_ircop)
 781                                 strlcat(flags, "*", sizeof(flags));
 782
 783                         chan_user_modes = Channel_UserModes(Chan, c);
 784                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 785
 786                         if (!write_whoreply(Client, c, Channel_Name(Chan), flags))
 787                                 return DISCONNECTED;
 788                 }
 789         }
 790         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 791 } /* IRC_Send_WHO */
 792
 793
 794 GLOBAL bool
 795 IRC_WHO( CLIENT *Client, REQUEST *Req )
 796 {
 797         bool only_ops, have_arg, client_match;
 798         const char *channelname, *client_modes, *chan_user_modes;
 799         char pattern[COMMAND_LEN];
 800         char flags[4];
 801         CL2CHAN *cl2chan;
 802         CHANNEL *chan, *cn;
 803         CLIENT *c;
 804
 805         assert( Client != NULL );
 806         assert( Req != NULL );
 807
 808         if (Req->argc > 2)
 809                 return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 810
 811         only_ops = false;
 812         have_arg = false;
 813
 814         if (Req->argc == 2) {
 815                 if (strcmp(Req->argv[1], "o") == 0)
 816                         only_ops = true;
 817 #ifdef STRICT_RFC
 818                 else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 819 #endif
 820         }
 821
 822         IRC_SetPenalty(Client, 1);
 823         if (Req->argc >= 1) { /* Channel or Mask. */
 824                 chan = Channel_Search(Req->argv[0]);
 825                 if (chan)
 826                         return IRC_Send_WHO(Client, chan, only_ops);
 827                 if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */
 828                         have_arg = true;
 829                         strlcpy(pattern, Req->argv[0], sizeof(pattern));
 830                         ngt_LowerStr(pattern);
 831                         IRC_SetPenalty(Client, 3);
 832                 }
 833         }
 834
 835         for (c = Client_First(); c != NULL; c = Client_Next(c)) {
 836                 if (Client_Type(c) != CLIENT_USER)
 837                         continue;
 838                  /*
 839                   * RFC 2812, 3.6.1:
 840                   * In the absence of the parameter, all visible (users who aren't
 841                   * invisible (user mode +i) and who don't have a common channel
 842                   * with the requesting client) are listed.
 843                   *
 844                   * The same result can be achieved by using a [sic] of "0"
 845                   * or any wildcard which will end up matching every visible user.
 846                   *
 847                   * The [sic] passed to WHO is matched against users' host, server, real name and
 848                   * nickname if the channel cannot be found.
 849                   */
 850                 client_modes = Client_Modes(c);
 851                 if (strchr(client_modes, 'i'))
 852                         continue;
 853
 854                 if (only_ops && !strchr(client_modes, 'o'))
 855                         continue;
 856
 857                 if (have_arg) { /* match pattern against user host/server/name/nick */
 858                         client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */
 859                         if (!client_match)
 860                                 client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */
 861                         if (!client_match)
 862                                 client_match = Match(Req->argv[0], Client_Info(c)); /* realname */
 863                         if (!client_match)
 864                                 client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */
 865
 866                         if (!client_match) /* This isn't the client you're looking for */
 867                                 continue;
 868                 }
 869
 870                 strcpy(flags, who_flags_status(client_modes));
 871
 872                 if (strchr(client_modes, 'o')) /* this client is an operator */
 873                         strlcat(flags, "*", sizeof(flags));
 874
 875                 /* Search suitable channel */
 876                 cl2chan = Channel_FirstChannelOf(c);
 877                 while (cl2chan) {
 878                         cn = Channel_GetChannel(cl2chan);
 879                         if (Channel_IsMemberOf(cn, Client) ||
 880                                     !strchr(Channel_Modes(cn), 's'))
 881                         {
 882                                 channelname = Channel_Name(cn);
 883                                 break;
 884                         }
 885                         cl2chan = Channel_NextChannelOf(c, cl2chan);
 886                 }
 887                 if (cl2chan) {
 888                         chan = Channel_GetChannel(cl2chan);
 889                         chan_user_modes = Channel_UserModes(chan, c);
 890                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 891                 } else
 892                         channelname = "*";
 893
 894                 if (!write_whoreply(Client, c, channelname, flags))
 895                         return DISCONNECTED;
 896         }
 897
 898         if (Req->argc > 0)
 899                 channelname = Req->argv[0];
 900         else
 901                 channelname = "*";
 902
 903         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname);
 904 } /* IRC_WHO */
 905
 906
 907 GLOBAL bool
 908 IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 909 {
 910         CLIENT *from, *target, *c;
 911         char str[LINE_LEN + 1];
 912         CL2CHAN *cl2chan;
 913         CHANNEL *chan;
 914
 915         assert( Client != NULL );
 916         assert( Req != NULL );
 917
 918         /* Bad number of parameters? */
 919         if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 920
 921         /* Search client */
 922         c = Client_Search( Req->argv[Req->argc - 1] );
 923         if(( ! c ) || ( Client_Type( c ) != CLIENT_USER )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[Req->argc - 1] );
 924
 925         /* Search sender of the WHOIS */
 926         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 927         else from = Client;
 928         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 929
 930         /* Forward to other server? */
 931         if( Req->argc > 1 )
 932         {
 933                 /* Search target server (can be specified as nick of that server!) */
 934                 target = Client_Search( Req->argv[0] );
 935                 if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 936         }
 937         else target = Client_ThisServer( );
 938
 939         assert( target != NULL );
 940
 941         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] );
 942
 943         /* Nick, user and name */
 944         if( ! IRC_WriteStrClient( from, RPL_WHOISUSER_MSG, Client_ID( from ), Client_ID( c ), Client_User( c ), Client_Hostname( c ), Client_Info( c ))) return DISCONNECTED;
 945
 946         /* Server */
 947         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;
 948
 949         /* Channels */
 950         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 951         cl2chan = Channel_FirstChannelOf( c );
 952         while( cl2chan )
 953         {
 954                 chan = Channel_GetChannel( cl2chan );
 955                 assert( chan != NULL );
 956
 957                 /* next */
 958                 cl2chan = Channel_NextChannelOf( c, cl2chan );
 959
 960                 /* Secret channel? */
 961                 if (strchr(Channel_Modes(chan), 's')
 962                     && !Channel_IsMemberOf(chan, Client))
 963                         continue;
 964
 965                 /* Local channel and request is not from a user? */
 966                 if (Client_Type(Client) == CLIENT_SERVER
 967                     && Channel_IsLocal(chan))
 968                         continue;
 969
 970                 /* Concatenate channel names */
 971                 if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
 972                 if( strchr( Channel_UserModes( chan, c ), 'o' )) strlcat( str, "@", sizeof( str ));
 973                 else if( strchr( Channel_UserModes( chan, c ), 'v' )) strlcat( str, "+", sizeof( str ));
 974                 strlcat( str, Channel_Name( chan ), sizeof( str ));
 975
 976                 if( strlen( str ) > ( LINE_LEN - CHANNEL_NAME_LEN - 4 ))
 977                 {
 978                         /* Line becomes too long: send it! */
 979                         if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 980                         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 981                 }
 982         }
 983         if( str[strlen( str ) - 1] != ':')
 984         {
 985                 /* There is data left to send: */
 986                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 987         }
 988
 989         /* IRC-Operator? */
 990         if( Client_HasMode( c, 'o' ))
 991         {
 992                 if( ! IRC_WriteStrClient( from, RPL_WHOISOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
 993         }
 994
 995         /* Connected using SSL? */
 996         if (Conn_UsesSSL(Client_Conn(c))) {
 997                 if (!IRC_WriteStrClient
 998                     (from, RPL_WHOISSSL_MSG, Client_ID(from), Client_ID(c)))
 999                         return DISCONNECTED;
1000         }
1001
1002         /* Idle and signon time (local clients only!) */
1003         if (Client_Conn(c) > NONE ) {
1004                 if (! IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
1005                         Client_ID(from), Client_ID(c),
1006                         (unsigned long)Conn_GetIdle(Client_Conn(c)),
1007                         (unsigned long)Conn_GetSignon(Client_Conn(c))))
1008                                 return DISCONNECTED;
1009         }
1010
1011         /* Away? */
1012         if( Client_HasMode( c, 'a' ))
1013         {
1014                 if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( c ), Client_Away( c ))) return DISCONNECTED;
1015         }
1016
1017         /* End of Whois */
1018         return IRC_WriteStrClient( from, RPL_ENDOFWHOIS_MSG, Client_ID( from ), Client_ID( c ));
1019 } /* IRC_WHOIS */
1020
1021
1022 static bool
1023 WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry)
1024 {
1025         char t_str[60];
1026
1027         (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y",
1028                                         localtime(&entry->time));
1029
1030         if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix),
1031                         entry->id, entry->user, entry->host, entry->info))
1032                                 return DISCONNECTED;
1033
1034         return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix),
1035                   entry->id, entry->server, t_str);
1036 }
1037
1038 /**
1039  * IRC "WHOWAS" function.
1040  * This function implements the IRC command "WHOWHAS". It handles local
1041  * requests and request that should be forwarded to other servers.
1042  */
1043 GLOBAL bool
1044 IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
1045 {
1046         CLIENT *target, *prefix;
1047         WHOWAS *whowas;
1048         char tok_buf[COMMAND_LEN];
1049         int max, last, count, i, nc;
1050         const char *nick;
1051
1052         assert( Client != NULL );
1053         assert( Req != NULL );
1054
1055         /* Wrong number of parameters? */
1056         if (Req->argc > 3)
1057                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
1058                                         Client_ID(Client), Req->command);
1059         if (Req->argc < 1)
1060                 return IRC_WriteStrClient(Client, ERR_NONICKNAMEGIVEN_MSG, Client_ID(Client));
1061
1062         /* Search target */
1063         if (Req->argc == 3)
1064                 target = Client_Search(Req->argv[2]);
1065         else
1066                 target = Client_ThisServer();
1067
1068         /* Get prefix */
1069         if (Client_Type(Client) == CLIENT_SERVER)
1070                 prefix = Client_Search(Req->prefix);
1071         else
1072                 prefix = Client;
1073
1074         if (!prefix)
1075                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
1076                                                 Client_ID(Client), Req->prefix);
1077
1078         /* Forward to other server? */
1079         if (target != Client_ThisServer()) {
1080                 if (!target || (Client_Type(target) != CLIENT_SERVER))
1081                         return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
1082                                         Client_ID(prefix), Req->argv[2]);
1083
1084                 /* Forward */
1085                 IRC_WriteStrClientPrefix( target, prefix, "WHOWAS %s %s %s",
1086                                           Req->argv[0], Req->argv[1],
1087                                           Req->argv[2] );
1088                 return CONNECTED;
1089         }
1090
1091         whowas = Client_GetWhowas( );
1092         last = Client_GetLastWhowasIndex( );
1093         if (last < 0)
1094                 last = 0;
1095
1096         max = DEFAULT_WHOWAS;
1097         if (Req->argc > 1) {
1098                 max = atoi(Req->argv[1]);
1099                 if (max < 1)
1100                         max = MAX_WHOWAS;
1101         }
1102
1103         /*
1104          * Break up the nick argument into a list of nicks, if applicable
1105          * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG.
1106          */
1107         strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf));
1108         nick = strtok(tok_buf, ",");
1109
1110         for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) {
1111                 nc = 0;
1112                 do {
1113                         /* Used entry? */
1114                         if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) {
1115                                 if (!WHOWAS_EntryWrite(prefix, &whowas[i]))
1116                                         return DISCONNECTED;
1117                                 nc++;
1118                                 count++;
1119                         }
1120                         /* previous entry */
1121                         i--;
1122
1123                         /* "underflow", wrap around */
1124                         if (i < 0)
1125                                 i = MAX_WHOWAS - 1;
1126
1127                         if (nc && count >= max)
1128                                 break;
1129                 } while (i != last);
1130
1131                 if (nc == 0 && !IRC_WriteStrClient(prefix, ERR_WASNOSUCHNICK_MSG,
1132                                                 Client_ID(prefix), nick))
1133                         return DISCONNECTED;
1134         }
1135         return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG, Client_ID(prefix), Req->argv[0]);
1136 } /* IRC_WHOWAS */
1137
1138
1139 GLOBAL bool
1140 IRC_Send_LUSERS( CLIENT *Client )
1141 {
1142         unsigned long cnt;
1143 #ifndef STRICT_RFC
1144         unsigned long max;
1145 #endif
1146
1147         assert( Client != NULL );
1148
1149         /* Users, services and serevers in the network */
1150         if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED;
1151
1152         /* Number of IRC operators */
1153         cnt = Client_OperCount( );
1154         if( cnt > 0 )
1155         {
1156                 if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1157         }
1158
1159         /* Unknown connections */
1160         cnt = Client_UnknownCount( );
1161         if( cnt > 0 )
1162         {
1163                 if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1164         }
1165
1166         /* Number of created channels */
1167         if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED;
1168
1169         /* Number of local users, services and servers */
1170         if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED;
1171
1172 #ifndef STRICT_RFC
1173         /* Maximum number of local users */
1174         cnt = Client_MyUserCount();
1175         max = Client_MyMaxUserCount();
1176         if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client),
1177                         cnt, max, cnt, max))
1178                 return DISCONNECTED;
1179         /* Maximum number of users in the network */
1180         cnt = Client_UserCount();
1181         max = Client_MaxUserCount();
1182         if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client),
1183                         cnt, max, cnt, max))
1184                 return DISCONNECTED;
1185         /* Connection counters */
1186         if (! IRC_WriteStrClient(Client, RPL_STATSCONN_MSG, Client_ID(Client),
1187                         Conn_CountMax(), Conn_CountAccepted()))
1188                 return DISCONNECTED;
1189 #endif
1190
1191         return CONNECTED;
1192 } /* IRC_Send_LUSERS */
1193
1194
1195 static bool
1196 Show_MOTD_Start(CLIENT *Client)
1197 {
1198         return IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG,
1199                 Client_ID( Client ), Client_ID( Client_ThisServer( )));
1200 }
1201
1202 static bool
1203 Show_MOTD_Sendline(CLIENT *Client, const char *msg)
1204 {
1205         return IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID( Client ), msg);
1206 }
1207
1208 static bool
1209 Show_MOTD_End(CLIENT *Client)
1210 {
1211         return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ));
1212 }
1213
1214 #ifdef SSL_SUPPORT
1215 static bool Show_MOTD_SSLInfo(CLIENT *Client)
1216 {
1217         bool ret = true;
1218         char buf[COMMAND_LEN] = "Connected using Cipher ";
1219
1220         if (!Conn_GetCipherInfo(Client_Conn(Client), buf + 23, sizeof buf - 23))
1221                 return true;
1222
1223         if (!Show_MOTD_Sendline(Client, buf))
1224                 ret = false;
1225
1226         return ret;
1227 }
1228 #else
1229 static inline bool Show_MOTD_SSLInfo(UNUSED CLIENT *c) { return true; }
1230 #endif
1231
1232 GLOBAL bool
1233 IRC_Show_MOTD( CLIENT *Client )
1234 {
1235         char line[127];
1236         FILE *fd;
1237
1238         assert( Client != NULL );
1239
1240         if (Conf_MotdPhrase[0]) {
1241                 if (!Show_MOTD_Start(Client))
1242                         return DISCONNECTED;
1243                 if (!Show_MOTD_Sendline(Client, Conf_MotdPhrase))
1244                         return DISCONNECTED;
1245                 goto out;
1246         }
1247
1248         fd = fopen( Conf_MotdFile, "r" );
1249         if( ! fd ) {
1250                 Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
1251                 if (Conn_UsesSSL(Client_Conn(Client))) {
1252                         if (!Show_MOTD_Start(Client))
1253                                 return DISCONNECTED;
1254                         goto out;
1255                 }
1256                 return IRC_WriteStrClient( Client, ERR_NOMOTD_MSG, Client_ID( Client ) );
1257         }
1258
1259         if (!Show_MOTD_Start( Client )) {
1260                 fclose(fd);
1261                 return false;
1262         }
1263
1264         while (fgets( line, (int)sizeof line, fd )) {
1265                 ngt_TrimLastChr( line, '\n');
1266
1267                 if( ! Show_MOTD_Sendline( Client, line)) {
1268                         fclose( fd );
1269                         return false;
1270                 }
1271         }
1272         fclose(fd);
1273 out:
1274         if (!Show_MOTD_SSLInfo(Client))
1275                 return DISCONNECTED;
1276         return Show_MOTD_End(Client);
1277 } /* IRC_Show_MOTD */
1278
1279
1280 GLOBAL bool
1281 IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan )
1282 {
1283         bool is_visible, is_member;
1284         char str[LINE_LEN + 1];
1285         CL2CHAN *cl2chan;
1286         CLIENT *cl;
1287
1288         assert( Client != NULL );
1289         assert( Chan != NULL );
1290
1291         if( Channel_IsMemberOf( Chan, Client )) is_member = true;
1292         else is_member = false;
1293
1294         /* Secret channel? */
1295         if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED;
1296
1297         /* Alle Mitglieder suchen */
1298         snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1299         cl2chan = Channel_FirstMember( Chan );
1300         while( cl2chan )
1301         {
1302                 cl = Channel_GetClient( cl2chan );
1303
1304                 if( strchr( Client_Modes( cl ), 'i' )) is_visible = false;
1305                 else is_visible = true;
1306
1307                 if( is_member || is_visible )
1308                 {
1309                         /* Nick anhaengen */
1310                         if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
1311                         if( strchr( Channel_UserModes( Chan, cl ), 'o' )) strlcat( str, "@", sizeof( str ));
1312                         else if( strchr( Channel_UserModes( Chan, cl ), 'v' )) strlcat( str, "+", sizeof( str ));
1313                         strlcat( str, Client_ID( cl ), sizeof( str ));
1314
1315                         if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
1316                         {
1317                                 /* Zeile wird zu lang: senden! */
1318                                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1319                                 snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1320                         }
1321                 }
1322
1323                 /* naechstes Mitglied suchen */
1324                 cl2chan = Channel_NextMember( Chan, cl2chan );
1325         }
1326         if( str[strlen( str ) - 1] != ':')
1327         {
1328                 /* Es sind noch Daten da, die gesendet werden muessen */
1329                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1330         }
1331
1332         return CONNECTED;
1333 } /* IRC_Send_NAMES */
1334
1335
1336
1337 /**
1338  * Send the ISUPPORT numeric (005).
1339  * This numeric indicates the features that are supported by this server.
1340  * See <http://www.irc.org/tech_docs/005.html> for details.
1341  */
1342 GLOBAL bool
1343 IRC_Send_ISUPPORT PARAMS((CLIENT * Client))
1344 {
1345         if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client),
1346                                 Conf_MaxJoins))
1347                 return DISCONNECTED;
1348         return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
1349                                   CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
1350                                   COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
1351                                   COMMAND_LEN - 113);
1352 } /* IRC_Send_ISUPPORT */
1353
1354
1355 /* -eof- */