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