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
  12
  13 #include "portab.h"
  14
  15 /**
  16  * @file
  17  * IRC info commands
  18  */
  19
  20 #include "imp.h"
  21 #include <assert.h>
  22 #include <errno.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <strings.h>
  27
  28 #include "ngircd.h"
  29 #include "conn-func.h"
  30 #include "conn-zip.h"
  31 #include "channel.h"
  32 #include "conf.h"
  33 #include "defines.h"
  34 #include "log.h"
  35 #include "messages.h"
  36 #include "match.h"
  37 #include "tool.h"
  38 #include "parse.h"
  39 #include "irc-write.h"
  40
  41 #include "exp.h"
  42 #include "irc-info.h"
  43
  44
  45 GLOBAL bool
  46 IRC_ADMIN(CLIENT *Client, REQUEST *Req )
  47 {
  48         CLIENT *target, *prefix;
  49
  50         assert( Client != NULL );
  51         assert( Req != NULL );
  52
  53         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  54
  55         /* find target ... */
  56         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
  57         else target = Client_ThisServer( );
  58
  59         /* find Prefix */
  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         /* forwad message to another server? */
  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                 /* forward */
  70                 IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] );
  71                 return CONNECTED;
  72         }
  73
  74         /* mit Versionsinfo antworten */
  75         if( ! IRC_WriteStrClient( Client, RPL_ADMINME_MSG, Client_ID( prefix ), Conf_ServerName )) return DISCONNECTED;
  76         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC1_MSG, Client_ID( prefix ), Conf_ServerAdmin1 )) return DISCONNECTED;
  77         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC2_MSG, Client_ID( prefix ), Conf_ServerAdmin2 )) return DISCONNECTED;
  78         if( ! IRC_WriteStrClient( Client, RPL_ADMINEMAIL_MSG, Client_ID( prefix ), Conf_ServerAdminMail )) return DISCONNECTED;
  79
  80         IRC_SetPenalty( Client, 1 );
  81         return CONNECTED;
  82 } /* IRC_ADMIN */
  83
  84
  85 /**
  86  * Handler for the IRC command "INFO".
  87  * See RFC 2812 section 3.4.10.
  88  */
  89 GLOBAL bool
  90 IRC_INFO(CLIENT * Client, REQUEST * Req)
  91 {
  92         CLIENT *target, *prefix;
  93         char msg[510];
  94
  95         assert(Client != NULL);
  96         assert(Req != NULL);
  97
  98         /* Wrong number of parameters? */
  99         if (Req->argc > 1)
 100                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 101                                           Client_ID(Client), Req->command);
 102
 103         /* Determine prefix */
 104         if (Client_Type(Client) == CLIENT_SERVER)
 105                 prefix = Client_Search(Req->prefix);
 106         else
 107                 prefix = Client;
 108         if (!prefix)
 109                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 110                                           Client_ID(Client), Req->prefix);
 111
 112         /* Look for a target */
 113         if (Req->argc > 0)
 114                 target = Client_Search(Req->argv[0]);
 115         else
 116                 target = Client_ThisServer();
 117
 118         /* Make sure that the target is a server */
 119         if (target && Client_Type(target) != CLIENT_SERVER)
 120                 target = Client_Introducer(target);
 121
 122         if (!target)
 123                 return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
 124                                           Client_ID(prefix), Req->argv[0]);
 125
 126         /* Pass on to another server? */
 127         if (target != Client_ThisServer()) {
 128                 IRC_WriteStrClientPrefix(target, prefix, "INFO %s",
 129                                          Req->argv[0]);
 130                 return CONNECTED;
 131         }
 132
 133         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix),
 134                                 NGIRCd_Version))
 135                 return DISCONNECTED;
 136
 137 #if defined(__DATE__) && defined(__TIME__)
 138         snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__);
 139         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 140                 return DISCONNECTED;
 141 #endif
 142
 143         strlcpy(msg, "On-line since ", sizeof(msg));
 144         strlcat(msg, NGIRCd_StartStr, sizeof(msg));
 145         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 146                 return DISCONNECTED;
 147
 148         if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix)))
 149                 return DISCONNECTED;
 150
 151         IRC_SetPenalty(Client, 2);
 152         return CONNECTED;
 153 } /* IRC_INFO */
 154
 155
 156 GLOBAL bool
 157 IRC_ISON( CLIENT *Client, REQUEST *Req )
 158 {
 159         char rpl[COMMAND_LEN];
 160         CLIENT *c;
 161         char *ptr;
 162         int i;
 163
 164         assert( Client != NULL );
 165         assert( Req != NULL );
 166
 167         /* Falsche Anzahl Parameter? */
 168         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 169
 170         strlcpy( rpl, RPL_ISON_MSG, sizeof rpl );
 171         for( i = 0; i < Req->argc; i++ )
 172         {
 173                 ptr = strtok( Req->argv[i], " " );
 174                 while( ptr )
 175                 {
 176                         ngt_TrimStr( ptr );
 177                         c = Client_Search( ptr );
 178                         if( c && ( Client_Type( c ) == CLIENT_USER ))
 179                         {
 180                                 /* Dieser Nick ist "online" */
 181                                 strlcat( rpl, ptr, sizeof( rpl ));
 182                                 strlcat( rpl, " ", sizeof( rpl ));
 183                         }
 184                         ptr = strtok( NULL, " " );
 185                 }
 186         }
 187         ngt_TrimLastChr(rpl, ' ');
 188
 189         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 190 } /* IRC_ISON */
 191
 192
 193 GLOBAL bool
 194 IRC_LINKS( CLIENT *Client, REQUEST *Req )
 195 {
 196         CLIENT *target, *from, *c;
 197         char *mask;
 198
 199         assert( Client != NULL );
 200         assert( Req != NULL );
 201
 202         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 203
 204         /* Server-Mask ermitteln */
 205         if( Req->argc > 0 ) mask = Req->argv[Req->argc - 1];
 206         else mask = "*";
 207
 208         /* Absender ermitteln */
 209         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 210         else from = Client;
 211         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 212
 213         /* An anderen Server forwarden? */
 214         if( Req->argc == 2 )
 215         {
 216                 target = Client_Search( Req->argv[0] );
 217                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 218                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LINKS %s %s", Req->argv[0], Req->argv[1] );
 219         }
 220
 221         /* Wer ist der Absender? */
 222         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 223         else target = Client;
 224         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 225
 226         c = Client_First( );
 227         while( c )
 228         {
 229                 if( Client_Type( c ) == CLIENT_SERVER )
 230                 {
 231                         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;
 232                 }
 233                 c = Client_Next( c );
 234         }
 235
 236         IRC_SetPenalty( target, 1 );
 237         return IRC_WriteStrClient( target, RPL_ENDOFLINKS_MSG, Client_ID( target ), mask );
 238 } /* IRC_LINKS */
 239
 240
 241 GLOBAL bool
 242 IRC_LUSERS( CLIENT *Client, REQUEST *Req )
 243 {
 244         CLIENT *target, *from;
 245
 246         assert( Client != NULL );
 247         assert( Req != NULL );
 248
 249         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 250
 251         /* Absender ermitteln */
 252         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 253         else from = Client;
 254         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 255
 256         /* An anderen Server forwarden? */
 257         if( Req->argc == 2 )
 258         {
 259                 target = Client_Search( Req->argv[1] );
 260                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 261                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LUSERS %s %s", Req->argv[0], Req->argv[1] );
 262         }
 263
 264         /* Wer ist der Absender? */
 265         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 266         else target = Client;
 267         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 268
 269         IRC_Send_LUSERS( target );
 270
 271         IRC_SetPenalty( target, 1 );
 272         return CONNECTED;
 273 } /* IRC_LUSERS */
 274
 275
 276 /**
 277  * Handler for the IRC command "SERVLIST".
 278  * List registered services, see RFC 2811, section 3.5.1: the syntax is
 279  * "SERVLIST [<mask> [<type>]]".
 280  */
 281 GLOBAL bool
 282 IRC_SERVLIST(CLIENT *Client, REQUEST *Req)
 283 {
 284         CLIENT *c;
 285
 286         assert(Client != NULL);
 287         assert(Req != NULL);
 288
 289         if (Req->argc > 2)
 290                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 291                                           Client_ID(Client), Req->command);
 292
 293         if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) {
 294                 for (c = Client_First(); c!= NULL; c = Client_Next(c)) {
 295                         if (Client_Type(c) != CLIENT_SERVICE)
 296                                 continue;
 297                         if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0],
 298                                                                   Client_ID(c)))
 299                                 continue;
 300                         if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG,
 301                                         Client_ID(Client), Client_Mask(c),
 302                                         Client_Mask(Client_Introducer(c)), "*",
 303                                         0, Client_Hops(c), Client_Info(c)))
 304                                 return DISCONNECTED;
 305                 }
 306         }
 307
 308         return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client),
 309                                   Req->argc > 0 ? Req->argv[0] : "*",
 310                                   Req->argc > 1 ? Req->argv[1] : "0");
 311 } /* IRC_SERVLIST */
 312
 313
 314 GLOBAL bool
 315 IRC_MOTD( CLIENT *Client, REQUEST *Req )
 316 {
 317         CLIENT *from, *target;
 318
 319         assert( Client != NULL );
 320         assert( Req != NULL );
 321
 322         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 323
 324         /* From aus Prefix ermitteln */
 325         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 326         else from = Client;
 327         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 328
 329         if( Req->argc == 1 )
 330         {
 331                 /* forward? */
 332                 target = Client_Search( Req->argv[0] );
 333                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 334
 335                 if( target != Client_ThisServer( ))
 336                 {
 337                         /* Ok, anderer Server ist das Ziel: forwarden */
 338                         return IRC_WriteStrClientPrefix( target, from, "MOTD %s", Req->argv[0] );
 339                 }
 340         }
 341
 342         IRC_SetPenalty( from, 3 );
 343         return IRC_Show_MOTD( from );
 344 } /* IRC_MOTD */
 345
 346
 347 GLOBAL bool
 348 IRC_NAMES( CLIENT *Client, REQUEST *Req )
 349 {
 350         char rpl[COMMAND_LEN], *ptr;
 351         CLIENT *target, *from, *c;
 352         CHANNEL *chan;
 353
 354         assert( Client != NULL );
 355         assert( Req != NULL );
 356
 357         if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 358
 359         /* use prefix to determine "From" */
 360         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 361         else from = Client;
 362         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 363
 364         if( Req->argc == 2 )
 365         {
 366                 /* forward to another server? */
 367                 target = Client_Search( Req->argv[1] );
 368                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 369
 370                 if( target != Client_ThisServer( )) {
 371                         /* target is another server, forward */
 372                         return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] );
 373                 }
 374         }
 375
 376         if( Req->argc > 0 )
 377         {
 378                 /* bestimmte Channels durchgehen */
 379                 ptr = strtok( Req->argv[0], "," );
 380                 while( ptr )
 381                 {
 382                         chan = Channel_Search( ptr );
 383                         if( chan )
 384                         {
 385                                 /* print name */
 386                                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 387                         }
 388                         if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED;
 389
 390                         /* get next channel name */
 391                         ptr = strtok( NULL, "," );
 392                 }
 393                 return CONNECTED;
 394         }
 395
 396         chan = Channel_First( );
 397         while( chan )
 398         {
 399                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 400
 401                 chan = Channel_Next( chan );
 402         }
 403
 404         /* Now print all clients which are not in any channel */
 405         c = Client_First( );
 406         snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 407         while( c )
 408         {
 409                 if(( Client_Type( c ) == CLIENT_USER ) && ( Channel_FirstChannelOf( c ) == NULL ) && ( ! strchr( Client_Modes( c ), 'i' )))
 410                 {
 411                         /* its a user, concatenate ... */
 412                         if( rpl[strlen( rpl ) - 1] != ':' ) strlcat( rpl, " ", sizeof( rpl ));
 413                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 414
 415                         if( strlen( rpl ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
 416                         {
 417                                 /* Line is gwoing too long, send now */
 418                                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 419                                 snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 420                         }
 421                 }
 422
 423                 c = Client_Next( c );
 424         }
 425         if( rpl[strlen( rpl ) - 1] != ':')
 426         {
 427                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 428         }
 429
 430         IRC_SetPenalty( from, 1 );
 431         return IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), "*" );
 432 } /* IRC_NAMES */
 433
 434
 435 static unsigned int
 436 t_diff(time_t *t, const time_t d)
 437 {
 438         time_t diff, remain;
 439
 440         diff = *t / d;
 441         remain = diff * d;
 442         *t -= remain;
 443
 444         return (unsigned int)diff;
 445 }
 446
 447
 448 static unsigned int
 449 uptime_days(time_t *now)
 450 {
 451         return t_diff(now, 60 * 60 * 24);
 452 }
 453
 454
 455 static unsigned int
 456 uptime_hrs(time_t *now)
 457 {
 458         return t_diff(now, 60 * 60);
 459 }
 460
 461
 462 static unsigned int
 463 uptime_mins(time_t *now)
 464 {
 465          return t_diff(now, 60);
 466 }
 467
 468
 469 /**
 470  * Handler for the IRC command "STATS".
 471  * See RFC 2812 section 3.4.4.
 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         if (Req->argc > 2)
 487                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 488                                           Client_ID(Client), Req->command);
 489
 490         /* use prefix to determine "From" */
 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,
 498                                           Client_ID(Client), Req->prefix);
 499
 500         if (Req->argc == 2) {
 501                 /* forward to another server? */
 502                 target = Client_Search(Req->argv[1]);
 503                 if ((!target) || (Client_Type(target) != CLIENT_SERVER))
 504                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 505                                                  Client_ID(from), Req->argv[1]);
 506
 507                 if (target != Client_ThisServer()) {
 508                         /* forward to another server */
 509                         return IRC_WriteStrClientPrefix(target, from,
 510                                      "STATS %s %s", Req->argv[0], Req->argv[1]);
 511                 }
 512         }
 513
 514         if (Req->argc > 0)
 515                 query = Req->argv[0][0] ? Req->argv[0][0] : '*';
 516         else
 517                 query = '*';
 518
 519         switch (query) {
 520         case 'l':       /* Link status (servers and own link) */
 521         case 'L':
 522                 time_now = time(NULL);
 523                 for (con = Conn_First(); con != NONE; con = Conn_Next(con)) {
 524                         cl = Conn_GetClient(con);
 525                         if (!cl)
 526                                 continue;
 527                         if ((Client_Type(cl) == CLIENT_SERVER)
 528                             || (cl == Client)) {
 529                                 /* Server link or our own connection */
 530 #ifdef ZLIB
 531                                 if (Conn_Options(con) & CONN_ZIP) {
 532                                         if (!IRC_WriteStrClient
 533                                             (from, RPL_STATSLINKINFOZIP_MSG,
 534                                              Client_ID(from), Client_Mask(cl),
 535                                              Conn_SendQ(con), Conn_SendMsg(con),
 536                                              Zip_SendBytes(con),
 537                                              Conn_SendBytes(con),
 538                                              Conn_RecvMsg(con),
 539                                              Zip_RecvBytes(con),
 540                                              Conn_RecvBytes(con),
 541                                              (long)(time_now - Conn_StartTime(con))))
 542                                                 return DISCONNECTED;
 543                                         continue;
 544                                 }
 545 #endif
 546                                 if (!IRC_WriteStrClient
 547                                     (from, RPL_STATSLINKINFO_MSG,
 548                                      Client_ID(from), Client_Mask(cl),
 549                                      Conn_SendQ(con), Conn_SendMsg(con),
 550                                      Conn_SendBytes(con), Conn_RecvMsg(con),
 551                                      Conn_RecvBytes(con),
 552                                      (long)(time_now - Conn_StartTime(con))))
 553                                         return DISCONNECTED;
 554                         }
 555                 }
 556                 break;
 557         case 'm':       /* IRC command status (usage count) */
 558         case 'M':
 559                 cmd = Parse_GetCommandStruct();
 560                 for (; cmd->name; cmd++) {
 561                         if (cmd->lcount == 0 && cmd->rcount == 0)
 562                                 continue;
 563                         if (!IRC_WriteStrClient
 564                             (from, RPL_STATSCOMMANDS_MSG, Client_ID(from),
 565                              cmd->name, cmd->lcount, cmd->bytes, cmd->rcount))
 566                                 return DISCONNECTED;
 567                 }
 568                 break;
 569         case 'u':       /* Server uptime */
 570         case 'U':
 571                 time_now = time(NULL) - NGIRCd_Start;
 572                 days = uptime_days(&time_now);
 573                 hrs = uptime_hrs(&time_now);
 574                 mins = uptime_mins(&time_now);
 575                 if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from),
 576                                        days, hrs, mins, (unsigned int)time_now))
 577                         return DISCONNECTED;
 578                 break;
 579         }
 580
 581         IRC_SetPenalty(from, 2);
 582         return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG,
 583                                   Client_ID(from), query);
 584 } /* IRC_STATS */
 585
 586
 587 /**
 588  * Handler for the IRC command "SUMMON".
 589  * See RFC 2812 section 4.5. ngIRCd doesn't implement this functionality and
 590  * therefore answers with ERR_SUMMONDISABLED.
 591  */
 592 GLOBAL bool
 593 IRC_SUMMON(CLIENT * Client, REQUEST * Req)
 594 {
 595         return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
 596                                   Client_ID(Client), Req->command);
 597 } /* IRC_SUMMON */
 598
 599
 600 GLOBAL bool
 601 IRC_TIME( CLIENT *Client, REQUEST *Req )
 602 {
 603         CLIENT *from, *target;
 604         char t_str[64];
 605         time_t t;
 606
 607         assert( Client != NULL );
 608         assert( Req != NULL );
 609
 610         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 611
 612         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 613         else from = Client;
 614         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 615
 616         if( Req->argc == 1 )
 617         {
 618                 target = Client_Search( Req->argv[0] );
 619                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] );
 620
 621                 if( target != Client_ThisServer( ))
 622                 {
 623                         return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] );
 624                 }
 625         }
 626
 627         t = time( NULL );
 628         (void)strftime( t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime( &t ));
 629         return IRC_WriteStrClient( from, RPL_TIME_MSG, Client_ID( from ), Client_ID( Client_ThisServer( )), t_str );
 630 } /* IRC_TIME */
 631
 632
 633 /**
 634  * Handler for the IRC command "USERHOST".
 635  * See RFC 2812 section 4.8.
 636  */
 637 GLOBAL bool
 638 IRC_USERHOST(CLIENT *Client, REQUEST *Req)
 639 {
 640         char rpl[COMMAND_LEN];
 641         CLIENT *c;
 642         int max, i;
 643
 644         assert(Client != NULL);
 645         assert(Req != NULL);
 646
 647         if ((Req->argc < 1))
 648                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 649                                           Client_ID(Client), Req->command);
 650
 651         if (Req->argc > 5)
 652                 max = 5;
 653         else
 654                 max = Req->argc;
 655
 656         strlcpy(rpl, RPL_USERHOST_MSG, sizeof rpl);
 657         for (i = 0; i < max; i++) {
 658                 c = Client_Search(Req->argv[i]);
 659                 if (c && (Client_Type(c) == CLIENT_USER)) {
 660                         /* This Nick is "online" */
 661                         strlcat(rpl, Client_ID(c), sizeof(rpl));
 662                         if (Client_HasMode(c, 'o'))
 663                                 strlcat(rpl, "*", sizeof(rpl));
 664                         strlcat(rpl, "=", sizeof(rpl));
 665                         if (Client_HasMode(c, 'a'))
 666                                 strlcat(rpl, "-", sizeof(rpl));
 667                         else
 668                                 strlcat(rpl, "+", sizeof(rpl));
 669                         strlcat(rpl, Client_User(c), sizeof(rpl));
 670                         strlcat(rpl, "@", sizeof(rpl));
 671                         strlcat(rpl, Client_HostnameCloaked(c), sizeof(rpl));
 672                         strlcat(rpl, " ", sizeof(rpl));
 673                 }
 674         }
 675         ngt_TrimLastChr(rpl, ' ');
 676
 677         return IRC_WriteStrClient(Client, rpl, Client_ID(Client));
 678 } /* IRC_USERHOST */
 679
 680
 681 /**
 682  * Handler for the IRC command "USERS".
 683  * See RFC 2812 section 4.6. As suggested there the command is disabled.
 684  */
 685 GLOBAL bool
 686 IRC_USERS(CLIENT * Client, REQUEST * Req)
 687 {
 688         return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
 689                                   Client_ID(Client), Req->command);
 690 } /* IRC_USERS */
 691
 692
 693 GLOBAL bool
 694 IRC_VERSION( CLIENT *Client, REQUEST *Req )
 695 {
 696         CLIENT *target, *prefix;
 697
 698         assert( Client != NULL );
 699         assert( Req != NULL );
 700
 701         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 702
 703         /* Ziel suchen */
 704         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
 705         else target = Client_ThisServer( );
 706
 707         /* Prefix ermitteln */
 708         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
 709         else prefix = Client;
 710         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 711
 712         /* An anderen Server weiterleiten? */
 713         if( target != Client_ThisServer( ))
 714         {
 715                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
 716
 717                 /* forwarden */
 718                 IRC_WriteStrClientPrefix( target, prefix, "VERSION %s", Req->argv[0] );
 719                 return CONNECTED;
 720         }
 721
 722         /* send version information */
 723         IRC_SetPenalty(Client, 1);
 724         return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix),
 725                                   PACKAGE_NAME, PACKAGE_VERSION,
 726                                   NGIRCd_DebugLevel, Conf_ServerName,
 727                                   NGIRCd_VersionAddition);
 728 } /* IRC_VERSION */
 729
 730
 731 static bool
 732 write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags)
 733 {
 734         return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client),
 735                                   channelname, Client_User(c),
 736                                   Client_HostnameCloaked(c),
 737                                   Client_ID(Client_Introducer(c)), Client_ID(c),
 738                                   flags, Client_Hops(c), Client_Info(c));
 739 }
 740
 741
 742 static const char *
 743 who_flags_status(const char *client_modes)
 744 {
 745         if (strchr(client_modes, 'a'))
 746                 return "G"; /* away */
 747         return "H";
 748 }
 749
 750
 751 static const char *
 752 who_flags_qualifier(const char *chan_user_modes)
 753 {
 754         if (strchr(chan_user_modes, 'o'))
 755                 return "@";
 756         else if (strchr(chan_user_modes, 'v'))
 757                 return "+";
 758         return "";
 759 }
 760
 761
 762 static bool
 763 IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 764 {
 765         bool is_visible, is_member, is_ircop;
 766         CL2CHAN *cl2chan;
 767         const char *client_modes;
 768         const char *chan_user_modes;
 769         char flags[8];
 770         CLIENT *c;
 771
 772         assert( Client != NULL );
 773         assert( Chan != NULL );
 774
 775         is_member = Channel_IsMemberOf(Chan, Client);
 776
 777         /* Secret channel? */
 778         if (!is_member && strchr(Channel_Modes(Chan), 's'))
 779                 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 780
 781         cl2chan = Channel_FirstMember(Chan);
 782         for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
 783                 c = Channel_GetClient(cl2chan);
 784
 785                 client_modes = Client_Modes(c);
 786                 is_ircop = strchr(client_modes, 'o') != NULL;
 787                 if (OnlyOps && !is_ircop)
 788                         continue;
 789
 790                 is_visible = strchr(client_modes, 'i') == NULL;
 791                 if (is_member || is_visible) {
 792                         strcpy(flags, who_flags_status(client_modes));
 793                         if (is_ircop)
 794                                 strlcat(flags, "*", sizeof(flags));
 795
 796                         chan_user_modes = Channel_UserModes(Chan, c);
 797                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 798
 799                         if (!write_whoreply(Client, c, Channel_Name(Chan), flags))
 800                                 return DISCONNECTED;
 801                 }
 802         }
 803         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 804 } /* IRC_Send_WHO */
 805
 806
 807 GLOBAL bool
 808 IRC_WHO( CLIENT *Client, REQUEST *Req )
 809 {
 810         bool only_ops, have_arg, client_match;
 811         const char *channelname, *client_modes, *chan_user_modes;
 812         char pattern[COMMAND_LEN];
 813         char flags[4];
 814         CL2CHAN *cl2chan;
 815         CHANNEL *chan, *cn;
 816         CLIENT *c;
 817
 818         assert( Client != NULL );
 819         assert( Req != NULL );
 820
 821         if (Req->argc > 2)
 822                 return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 823
 824         only_ops = false;
 825         have_arg = false;
 826
 827         if (Req->argc == 2) {
 828                 if (strcmp(Req->argv[1], "o") == 0)
 829                         only_ops = true;
 830 #ifdef STRICT_RFC
 831                 else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 832 #endif
 833         }
 834
 835         IRC_SetPenalty(Client, 1);
 836         if (Req->argc >= 1) { /* Channel or Mask. */
 837                 chan = Channel_Search(Req->argv[0]);
 838                 if (chan)
 839                         return IRC_Send_WHO(Client, chan, only_ops);
 840                 if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */
 841                         have_arg = true;
 842                         strlcpy(pattern, Req->argv[0], sizeof(pattern));
 843                         ngt_LowerStr(pattern);
 844                         IRC_SetPenalty(Client, 3);
 845                 }
 846         }
 847
 848         for (c = Client_First(); c != NULL; c = Client_Next(c)) {
 849                 if (Client_Type(c) != CLIENT_USER)
 850                         continue;
 851                  /*
 852                   * RFC 2812, 3.6.1:
 853                   * In the absence of the parameter, all visible (users who aren't
 854                   * invisible (user mode +i) and who don't have a common channel
 855                   * with the requesting client) are listed.
 856                   *
 857                   * The same result can be achieved by using a [sic] of "0"
 858                   * or any wildcard which will end up matching every visible user.
 859                   *
 860                   * The [sic] passed to WHO is matched against users' host, server, real name and
 861                   * nickname if the channel cannot be found.
 862                   */
 863                 client_modes = Client_Modes(c);
 864                 if (strchr(client_modes, 'i'))
 865                         continue;
 866
 867                 if (only_ops && !strchr(client_modes, 'o'))
 868                         continue;
 869
 870                 if (have_arg) { /* match pattern against user host/server/name/nick */
 871                         client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */
 872                         if (!client_match)
 873                                 client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */
 874                         if (!client_match)
 875                                 client_match = Match(Req->argv[0], Client_Info(c)); /* realname */
 876                         if (!client_match)
 877                                 client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */
 878
 879                         if (!client_match) /* This isn't the client you're looking for */
 880                                 continue;
 881                 }
 882
 883                 strcpy(flags, who_flags_status(client_modes));
 884
 885                 if (strchr(client_modes, 'o')) /* this client is an operator */
 886                         strlcat(flags, "*", sizeof(flags));
 887
 888                 /* Search suitable channel */
 889                 cl2chan = Channel_FirstChannelOf(c);
 890                 while (cl2chan) {
 891                         cn = Channel_GetChannel(cl2chan);
 892                         if (Channel_IsMemberOf(cn, Client) ||
 893                                     !strchr(Channel_Modes(cn), 's'))
 894                         {
 895                                 channelname = Channel_Name(cn);
 896                                 break;
 897                         }
 898                         cl2chan = Channel_NextChannelOf(c, cl2chan);
 899                 }
 900                 if (cl2chan) {
 901                         chan = Channel_GetChannel(cl2chan);
 902                         chan_user_modes = Channel_UserModes(chan, c);
 903                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 904                 } else
 905                         channelname = "*";
 906
 907                 if (!write_whoreply(Client, c, channelname, flags))
 908                         return DISCONNECTED;
 909         }
 910
 911         if (Req->argc > 0)
 912                 channelname = Req->argv[0];
 913         else
 914                 channelname = "*";
 915
 916         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname);
 917 } /* IRC_WHO */
 918
 919
 920 /**
 921  * Handler for the IRC "WHOIS" command.
 922  *
 923  * See RFC 2812, 3.6.2 "Whois query".
 924  *
 925  * @param Client        The client from which this command has been received.
 926  * @param Req           Request structure with prefix and all parameters.
 927  * @return              CONNECTED or DISCONNECTED.
 928  */
 929 GLOBAL bool
 930 IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 931 {
 932         CLIENT *from, *target, *c;
 933         char str[LINE_LEN + 1];
 934         CL2CHAN *cl2chan;
 935         CHANNEL *chan;
 936
 937         assert( Client != NULL );
 938         assert( Req != NULL );
 939
 940         /* Bad number of parameters? */
 941         if (Req->argc < 1 || Req->argc > 2)
 942                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 943                                           Client_ID(Client), Req->command);
 944
 945         /* Search client */
 946         c = Client_Search(Req->argv[Req->argc - 1]);
 947         if (!c || (Client_Type(c) != CLIENT_USER
 948                    && Client_Type(c) != CLIENT_SERVICE))
 949                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 950                                           Client_ID(Client),
 951                                           Req->argv[Req->argc - 1]);
 952
 953         /* Search sender of the WHOIS */
 954         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 955         else from = Client;
 956         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 957
 958         /* Forward to other server? */
 959         if( Req->argc > 1 )
 960         {
 961                 /* Search target server (can be specified as nick of that server!) */
 962                 target = Client_Search( Req->argv[0] );
 963                 if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 964         }
 965         else target = Client_ThisServer( );
 966
 967         assert( target != NULL );
 968
 969         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] );
 970
 971         /* Nick, user, hostname and client info */
 972         if (!IRC_WriteStrClient(from, RPL_WHOISUSER_MSG, Client_ID(from),
 973                                 Client_ID(c), Client_User(c),
 974                                 Client_HostnameCloaked(c), Client_Info(c)))
 975                 return DISCONNECTED;
 976
 977         /* Server */
 978         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;
 979
 980         /* Channels */
 981         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 982         cl2chan = Channel_FirstChannelOf( c );
 983         while( cl2chan )
 984         {
 985                 chan = Channel_GetChannel( cl2chan );
 986                 assert( chan != NULL );
 987
 988                 /* next */
 989                 cl2chan = Channel_NextChannelOf( c, cl2chan );
 990
 991                 /* Secret channel? */
 992                 if (strchr(Channel_Modes(chan), 's')
 993                     && !Channel_IsMemberOf(chan, Client))
 994                         continue;
 995
 996                 /* Local channel and request is not from a user? */
 997                 if (Client_Type(Client) == CLIENT_SERVER
 998                     && Channel_IsLocal(chan))
 999                         continue;
1000
1001                 /* Concatenate channel names */
1002                 if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
1003                 if( strchr( Channel_UserModes( chan, c ), 'o' )) strlcat( str, "@", sizeof( str ));
1004                 else if( strchr( Channel_UserModes( chan, c ), 'v' )) strlcat( str, "+", sizeof( str ));
1005                 strlcat( str, Channel_Name( chan ), sizeof( str ));
1006
1007                 if( strlen( str ) > ( LINE_LEN - CHANNEL_NAME_LEN - 4 ))
1008                 {
1009                         /* Line becomes too long: send it! */
1010                         if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1011                         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
1012                 }
1013         }
1014         if( str[strlen( str ) - 1] != ':')
1015         {
1016                 /* There is data left to send: */
1017                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1018         }
1019
1020         /* IRC-Operator? */
1021         if( Client_HasMode( c, 'o' ))
1022         {
1023                 if( ! IRC_WriteStrClient( from, RPL_WHOISOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
1024         }
1025
1026         /* Connected using SSL? */
1027         if (Conn_UsesSSL(Client_Conn(c))) {
1028                 if (!IRC_WriteStrClient
1029                     (from, RPL_WHOISSSL_MSG, Client_ID(from), Client_ID(c)))
1030                         return DISCONNECTED;
1031         }
1032
1033         /* Idle and signon time (local clients only!) */
1034         if (Client_Conn(c) > NONE ) {
1035                 if (! IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
1036                         Client_ID(from), Client_ID(c),
1037                         (unsigned long)Conn_GetIdle(Client_Conn(c)),
1038                         (unsigned long)Conn_GetSignon(Client_Conn(c))))
1039                                 return DISCONNECTED;
1040         }
1041
1042         /* Away? */
1043         if( Client_HasMode( c, 'a' ))
1044         {
1045                 if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( c ), Client_Away( c ))) return DISCONNECTED;
1046         }
1047
1048         /* End of Whois */
1049         return IRC_WriteStrClient( from, RPL_ENDOFWHOIS_MSG, Client_ID( from ), Client_ID( c ));
1050 } /* IRC_WHOIS */
1051
1052
1053 static bool
1054 WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry)
1055 {
1056         char t_str[60];
1057
1058         (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y",
1059                                         localtime(&entry->time));
1060
1061         if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix),
1062                         entry->id, entry->user, entry->host, entry->info))
1063                                 return DISCONNECTED;
1064
1065         return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix),
1066                   entry->id, entry->server, t_str);
1067 }
1068
1069 /**
1070  * IRC "WHOWAS" function.
1071  * This function implements the IRC command "WHOWHAS". It handles local
1072  * requests and request that should be forwarded to other servers.
1073  */
1074 GLOBAL bool
1075 IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
1076 {
1077         CLIENT *target, *prefix;
1078         WHOWAS *whowas;
1079         char tok_buf[COMMAND_LEN];
1080         int max, last, count, i, nc;
1081         const char *nick;
1082
1083         assert( Client != NULL );
1084         assert( Req != NULL );
1085
1086         /* Wrong number of parameters? */
1087         if (Req->argc > 3)
1088                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
1089                                         Client_ID(Client), Req->command);
1090         if (Req->argc < 1)
1091                 return IRC_WriteStrClient(Client, ERR_NONICKNAMEGIVEN_MSG, Client_ID(Client));
1092
1093         /* Search target */
1094         if (Req->argc == 3)
1095                 target = Client_Search(Req->argv[2]);
1096         else
1097                 target = Client_ThisServer();
1098
1099         /* Get prefix */
1100         if (Client_Type(Client) == CLIENT_SERVER)
1101                 prefix = Client_Search(Req->prefix);
1102         else
1103                 prefix = Client;
1104
1105         if (!prefix)
1106                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
1107                                                 Client_ID(Client), Req->prefix);
1108
1109         /* Forward to other server? */
1110         if (target != Client_ThisServer()) {
1111                 if (!target || (Client_Type(target) != CLIENT_SERVER))
1112                         return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
1113                                         Client_ID(prefix), Req->argv[2]);
1114
1115                 /* Forward */
1116                 IRC_WriteStrClientPrefix( target, prefix, "WHOWAS %s %s %s",
1117                                           Req->argv[0], Req->argv[1],
1118                                           Req->argv[2] );
1119                 return CONNECTED;
1120         }
1121
1122         whowas = Client_GetWhowas( );
1123         last = Client_GetLastWhowasIndex( );
1124         if (last < 0)
1125                 last = 0;
1126
1127         max = DEFAULT_WHOWAS;
1128         if (Req->argc > 1) {
1129                 max = atoi(Req->argv[1]);
1130                 if (max < 1)
1131                         max = MAX_WHOWAS;
1132         }
1133
1134         /*
1135          * Break up the nick argument into a list of nicks, if applicable
1136          * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG.
1137          */
1138         strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf));
1139         nick = strtok(tok_buf, ",");
1140
1141         for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) {
1142                 nc = 0;
1143                 do {
1144                         /* Used entry? */
1145                         if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) {
1146                                 if (!WHOWAS_EntryWrite(prefix, &whowas[i]))
1147                                         return DISCONNECTED;
1148                                 nc++;
1149                                 count++;
1150                         }
1151                         /* previous entry */
1152                         i--;
1153
1154                         /* "underflow", wrap around */
1155                         if (i < 0)
1156                                 i = MAX_WHOWAS - 1;
1157
1158                         if (nc && count >= max)
1159                                 break;
1160                 } while (i != last);
1161
1162                 if (nc == 0 && !IRC_WriteStrClient(prefix, ERR_WASNOSUCHNICK_MSG,
1163                                                 Client_ID(prefix), nick))
1164                         return DISCONNECTED;
1165         }
1166         return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG, Client_ID(prefix), Req->argv[0]);
1167 } /* IRC_WHOWAS */
1168
1169
1170 GLOBAL bool
1171 IRC_Send_LUSERS( CLIENT *Client )
1172 {
1173         unsigned long cnt;
1174 #ifndef STRICT_RFC
1175         unsigned long max;
1176 #endif
1177
1178         assert( Client != NULL );
1179
1180         /* Users, services and serevers in the network */
1181         if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED;
1182
1183         /* Number of IRC operators */
1184         cnt = Client_OperCount( );
1185         if( cnt > 0 )
1186         {
1187                 if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1188         }
1189
1190         /* Unknown connections */
1191         cnt = Client_UnknownCount( );
1192         if( cnt > 0 )
1193         {
1194                 if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1195         }
1196
1197         /* Number of created channels */
1198         if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED;
1199
1200         /* Number of local users, services and servers */
1201         if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED;
1202
1203 #ifndef STRICT_RFC
1204         /* Maximum number of local users */
1205         cnt = Client_MyUserCount();
1206         max = Client_MyMaxUserCount();
1207         if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client),
1208                         cnt, max, cnt, max))
1209                 return DISCONNECTED;
1210         /* Maximum number of users in the network */
1211         cnt = Client_UserCount();
1212         max = Client_MaxUserCount();
1213         if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client),
1214                         cnt, max, cnt, max))
1215                 return DISCONNECTED;
1216         /* Connection counters */
1217         if (! IRC_WriteStrClient(Client, RPL_STATSCONN_MSG, Client_ID(Client),
1218                         Conn_CountMax(), Conn_CountAccepted()))
1219                 return DISCONNECTED;
1220 #endif
1221
1222         return CONNECTED;
1223 } /* IRC_Send_LUSERS */
1224
1225
1226 static bool
1227 Show_MOTD_Start(CLIENT *Client)
1228 {
1229         return IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG,
1230                 Client_ID( Client ), Client_ID( Client_ThisServer( )));
1231 }
1232
1233 static bool
1234 Show_MOTD_Sendline(CLIENT *Client, const char *msg)
1235 {
1236         return IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID( Client ), msg);
1237 }
1238
1239 static bool
1240 Show_MOTD_End(CLIENT *Client)
1241 {
1242         return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ));
1243 }
1244
1245 #ifdef SSL_SUPPORT
1246 static bool Show_MOTD_SSLInfo(CLIENT *Client)
1247 {
1248         bool ret = true;
1249         char buf[COMMAND_LEN] = "Connected using Cipher ";
1250
1251         if (!Conn_GetCipherInfo(Client_Conn(Client), buf + 23, sizeof buf - 23))
1252                 return true;
1253
1254         if (!Show_MOTD_Sendline(Client, buf))
1255                 ret = false;
1256
1257         return ret;
1258 }
1259 #else
1260 static inline bool
1261 Show_MOTD_SSLInfo(UNUSED CLIENT *c)
1262 { return true; }
1263 #endif
1264
1265 GLOBAL bool
1266 IRC_Show_MOTD( CLIENT *Client )
1267 {
1268         const char *line;
1269         size_t len_tot, len_str;
1270
1271         assert( Client != NULL );
1272
1273         len_tot = array_bytes(&Conf_Motd);
1274         if (len_tot == 0 && !Conn_UsesSSL(Client_Conn(Client)))
1275                 return IRC_WriteStrClient(Client, ERR_NOMOTD_MSG, Client_ID(Client));
1276
1277         if (!Show_MOTD_Start(Client))
1278                 return DISCONNECTED;
1279
1280         line = array_start(&Conf_Motd);
1281         while (len_tot > 0) {
1282                 len_str = strlen(line) + 1;
1283
1284                 assert(len_tot >= len_str);
1285                 len_tot -= len_str;
1286
1287                 if (!Show_MOTD_Sendline(Client, line))
1288                         return DISCONNECTED;
1289                 line += len_str;
1290         }
1291
1292         if (!Show_MOTD_SSLInfo(Client))
1293                 return DISCONNECTED;
1294         return Show_MOTD_End(Client);
1295 } /* IRC_Show_MOTD */
1296
1297
1298 GLOBAL bool
1299 IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan )
1300 {
1301         bool is_visible, is_member;
1302         char str[LINE_LEN + 1];
1303         CL2CHAN *cl2chan;
1304         CLIENT *cl;
1305
1306         assert( Client != NULL );
1307         assert( Chan != NULL );
1308
1309         if( Channel_IsMemberOf( Chan, Client )) is_member = true;
1310         else is_member = false;
1311
1312         /* Secret channel? */
1313         if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED;
1314
1315         /* Alle Mitglieder suchen */
1316         snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1317         cl2chan = Channel_FirstMember( Chan );
1318         while( cl2chan )
1319         {
1320                 cl = Channel_GetClient( cl2chan );
1321
1322                 if( strchr( Client_Modes( cl ), 'i' )) is_visible = false;
1323                 else is_visible = true;
1324
1325                 if( is_member || is_visible )
1326                 {
1327                         /* Nick anhaengen */
1328                         if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
1329                         if( strchr( Channel_UserModes( Chan, cl ), 'o' )) strlcat( str, "@", sizeof( str ));
1330                         else if( strchr( Channel_UserModes( Chan, cl ), 'v' )) strlcat( str, "+", sizeof( str ));
1331                         strlcat( str, Client_ID( cl ), sizeof( str ));
1332
1333                         if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
1334                         {
1335                                 /* Zeile wird zu lang: senden! */
1336                                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1337                                 snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1338                         }
1339                 }
1340
1341                 /* naechstes Mitglied suchen */
1342                 cl2chan = Channel_NextMember( Chan, cl2chan );
1343         }
1344         if( str[strlen( str ) - 1] != ':')
1345         {
1346                 /* Es sind noch Daten da, die gesendet werden muessen */
1347                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1348         }
1349
1350         return CONNECTED;
1351 } /* IRC_Send_NAMES */
1352
1353
1354 /**
1355  * Send the ISUPPORT numeric (005).
1356  * This numeric indicates the features that are supported by this server.
1357  * See <http://www.irc.org/tech_docs/005.html> for details.
1358  */
1359 GLOBAL bool
1360 IRC_Send_ISUPPORT(CLIENT * Client)
1361 {
1362         if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client),
1363                                 Conf_MaxJoins))
1364                 return DISCONNECTED;
1365         return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
1366                                   CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
1367                                   COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
1368                                   COMMAND_LEN - 113);
1369 } /* IRC_Send_ISUPPORT */
1370
1371
1372 /* -eof- */