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