src/ngircd/irc-info.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2009 Alexander Barton (alex@barton.de)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  *
  11  * IRC info commands
  12  */
  13
  14
  15 #include "portab.h"
  16
  17 #include "imp.h"
  18 #include <assert.h>
  19 #include <errno.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <strings.h>
  24
  25 #include "ngircd.h"
  26 #include "conn-func.h"
  27 #include "conn-zip.h"
  28 #include "client.h"
  29 #include "channel.h"
  30 #include "resolve.h"
  31 #include "conf.h"
  32 #include "defines.h"
  33 #include "log.h"
  34 #include "messages.h"
  35 #include "match.h"
  36 #include "tool.h"
  37 #include "parse.h"
  38 #include "irc-write.h"
  39
  40 #include "exp.h"
  41 #include "irc-info.h"
  42
  43
  44 GLOBAL bool
  45 IRC_ADMIN(CLIENT *Client, REQUEST *Req )
  46 {
  47         CLIENT *target, *prefix;
  48
  49         assert( Client != NULL );
  50         assert( Req != NULL );
  51
  52         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  53
  54         /* find target ... */
  55         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
  56         else target = Client_ThisServer( );
  57
  58         /* find Prefix */
  59         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
  60         else prefix = Client;
  61         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  62
  63         /* forwad message to another server? */
  64         if( target != Client_ThisServer( ))
  65         {
  66                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
  67
  68                 /* forward */
  69                 IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] );
  70                 return CONNECTED;
  71         }
  72
  73         /* mit Versionsinfo antworten */
  74         if( ! IRC_WriteStrClient( Client, RPL_ADMINME_MSG, Client_ID( prefix ), Conf_ServerName )) return DISCONNECTED;
  75         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC1_MSG, Client_ID( prefix ), Conf_ServerAdmin1 )) return DISCONNECTED;
  76         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC2_MSG, Client_ID( prefix ), Conf_ServerAdmin2 )) return DISCONNECTED;
  77         if( ! IRC_WriteStrClient( Client, RPL_ADMINEMAIL_MSG, Client_ID( prefix ), Conf_ServerAdminMail )) return DISCONNECTED;
  78
  79         IRC_SetPenalty( Client, 1 );
  80         return CONNECTED;
  81 } /* IRC_ADMIN */
  82
  83
  84 /**
  85  * Handler for the IRC command "INFO".
  86  * See RFC 2812 section 3.4.10.
  87  */
  88 GLOBAL bool
  89 IRC_INFO(CLIENT * Client, REQUEST * Req)
  90 {
  91         CLIENT *target, *prefix;
  92         char msg[510];
  93
  94         assert(Client != NULL);
  95         assert(Req != NULL);
  96
  97         /* Wrong number of parameters? */
  98         if (Req->argc > 1)
  99                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 100                                           Client_ID(Client), Req->command);
 101
 102         /* Determine prefix */
 103         if (Client_Type(Client) == CLIENT_SERVER)
 104                 prefix = Client_Search(Req->prefix);
 105         else
 106                 prefix = Client;
 107         if (!prefix)
 108                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 109                                           Client_ID(Client), Req->prefix);
 110
 111         /* Look for a target */
 112         if (Req->argc > 0)
 113                 target = Client_Search(Req->argv[0]);
 114         else
 115                 target = Client_ThisServer();
 116
 117         /* Make sure that the target is a server */
 118         if (target && Client_Type(target) != CLIENT_SERVER)
 119                 target = Client_Introducer(target);
 120
 121         if (!target)
 122                 return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
 123                                           Client_ID(prefix), Req->argv[0]);
 124
 125         /* Pass on to another server? */
 126         if (target != Client_ThisServer()) {
 127                 IRC_WriteStrClientPrefix(target, prefix, "INFO %s",
 128                                          Req->argv[0]);
 129                 return CONNECTED;
 130         }
 131
 132         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix),
 133                                 NGIRCd_Version))
 134                 return DISCONNECTED;
 135
 136 #if defined(__DATE__) && defined(__TIME__)
 137         snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__);
 138         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 139                 return DISCONNECTED;
 140 #endif
 141
 142         strlcpy(msg, "On-line since ", sizeof(msg));
 143         strlcat(msg, NGIRCd_StartStr, sizeof(msg));
 144         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 145                 return DISCONNECTED;
 146
 147         if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix)))
 148                 return DISCONNECTED;
 149
 150         IRC_SetPenalty(Client, 2);
 151         return CONNECTED;
 152 } /* IRC_INFO */
 153
 154
 155 GLOBAL bool
 156 IRC_ISON( CLIENT *Client, REQUEST *Req )
 157 {
 158         char rpl[COMMAND_LEN];
 159         CLIENT *c;
 160         char *ptr;
 161         int i;
 162
 163         assert( Client != NULL );
 164         assert( Req != NULL );
 165
 166         /* Falsche Anzahl Parameter? */
 167         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 168
 169         strlcpy( rpl, RPL_ISON_MSG, sizeof rpl );
 170         for( i = 0; i < Req->argc; i++ )
 171         {
 172                 ptr = strtok( Req->argv[i], " " );
 173                 while( ptr )
 174                 {
 175                         ngt_TrimStr( ptr );
 176                         c = Client_Search( ptr );
 177                         if( c && ( Client_Type( c ) == CLIENT_USER ))
 178                         {
 179                                 /* Dieser Nick ist "online" */
 180                                 strlcat( rpl, ptr, sizeof( rpl ));
 181                                 strlcat( rpl, " ", sizeof( rpl ));
 182                         }
 183                         ptr = strtok( NULL, " " );
 184                 }
 185         }
 186         ngt_TrimLastChr(rpl, ' ');
 187
 188         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 189 } /* IRC_ISON */
 190
 191
 192 GLOBAL bool
 193 IRC_LINKS( CLIENT *Client, REQUEST *Req )
 194 {
 195         CLIENT *target, *from, *c;
 196         char *mask;
 197
 198         assert( Client != NULL );
 199         assert( Req != NULL );
 200
 201         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 202
 203         /* Server-Mask ermitteln */
 204         if( Req->argc > 0 ) mask = Req->argv[Req->argc - 1];
 205         else mask = "*";
 206
 207         /* Absender ermitteln */
 208         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 209         else from = Client;
 210         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 211
 212         /* An anderen Server forwarden? */
 213         if( Req->argc == 2 )
 214         {
 215                 target = Client_Search( Req->argv[0] );
 216                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 217                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LINKS %s %s", Req->argv[0], Req->argv[1] );
 218         }
 219
 220         /* Wer ist der Absender? */
 221         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 222         else target = Client;
 223         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 224
 225         c = Client_First( );
 226         while( c )
 227         {
 228                 if( Client_Type( c ) == CLIENT_SERVER )
 229                 {
 230                         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;
 231                 }
 232                 c = Client_Next( c );
 233         }
 234
 235         IRC_SetPenalty( target, 1 );
 236         return IRC_WriteStrClient( target, RPL_ENDOFLINKS_MSG, Client_ID( target ), mask );
 237 } /* IRC_LINKS */
 238
 239
 240 GLOBAL bool
 241 IRC_LUSERS( CLIENT *Client, REQUEST *Req )
 242 {
 243         CLIENT *target, *from;
 244
 245         assert( Client != NULL );
 246         assert( Req != NULL );
 247
 248         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 249
 250         /* Absender ermitteln */
 251         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 252         else from = Client;
 253         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 254
 255         /* An anderen Server forwarden? */
 256         if( Req->argc == 2 )
 257         {
 258                 target = Client_Search( Req->argv[1] );
 259                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 260                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LUSERS %s %s", Req->argv[0], Req->argv[1] );
 261         }
 262
 263         /* Wer ist der Absender? */
 264         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 265         else target = Client;
 266         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 267
 268         IRC_Send_LUSERS( target );
 269
 270         IRC_SetPenalty( target, 1 );
 271         return CONNECTED;
 272 } /* IRC_LUSERS */
 273
 274
 275 /**
 276  * Handler for the IRC command "SERVLIST".
 277  * List registered services, see RFC 2811, section 3.5.1: the syntax is
 278  * "SERVLIST [<mask> [<type>]]".
 279  */
 280 GLOBAL bool
 281 IRC_SERVLIST(CLIENT *Client, REQUEST *Req)
 282 {
 283         CLIENT *c;
 284
 285         assert(Client != NULL);
 286         assert(Req != NULL);
 287
 288         if (Req->argc > 2)
 289                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 290                                           Client_ID(Client), Req->command);
 291
 292         if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) {
 293                 for (c = Client_First(); c!= NULL; c = Client_Next(c)) {
 294                         if (Client_Type(c) != CLIENT_SERVICE)
 295                                 continue;
 296                         if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0],
 297                                                                   Client_ID(c)))
 298                                 continue;
 299                         if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG,
 300                                         Client_ID(Client), Client_Mask(c),
 301                                         Client_Mask(Client_Introducer(c)), "*",
 302                                         0, Client_Hops(c), Client_Info(c)))
 303                                 return DISCONNECTED;
 304                 }
 305         }
 306
 307         return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client),
 308                                   Req->argc > 0 ? Req->argv[0] : "*",
 309                                   Req->argc > 1 ? Req->argv[1] : "0");
 310 } /* IRC_SERVLIST */
 311
 312
 313 GLOBAL bool
 314 IRC_MOTD( CLIENT *Client, REQUEST *Req )
 315 {
 316         CLIENT *from, *target;
 317
 318         assert( Client != NULL );
 319         assert( Req != NULL );
 320
 321         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 322
 323         /* From aus Prefix ermitteln */
 324         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 325         else from = Client;
 326         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 327
 328         if( Req->argc == 1 )
 329         {
 330                 /* forward? */
 331                 target = Client_Search( Req->argv[0] );
 332                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 333
 334                 if( target != Client_ThisServer( ))
 335                 {
 336                         /* Ok, anderer Server ist das Ziel: forwarden */
 337                         return IRC_WriteStrClientPrefix( target, from, "MOTD %s", Req->argv[0] );
 338                 }
 339         }
 340
 341         IRC_SetPenalty( from, 3 );
 342         return IRC_Show_MOTD( from );
 343 } /* IRC_MOTD */
 344
 345
 346 GLOBAL bool
 347 IRC_NAMES( CLIENT *Client, REQUEST *Req )
 348 {
 349         char rpl[COMMAND_LEN], *ptr;
 350         CLIENT *target, *from, *c;
 351         CHANNEL *chan;
 352
 353         assert( Client != NULL );
 354         assert( Req != NULL );
 355
 356         if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 357
 358         /* use prefix to determine "From" */
 359         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 360         else from = Client;
 361         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 362
 363         if( Req->argc == 2 )
 364         {
 365                 /* forward to another server? */
 366                 target = Client_Search( Req->argv[1] );
 367                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 368
 369                 if( target != Client_ThisServer( )) {
 370                         /* target is another server, forward */
 371                         return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] );
 372                 }
 373         }
 374
 375         if( Req->argc > 0 )
 376         {
 377                 /* bestimmte Channels durchgehen */
 378                 ptr = strtok( Req->argv[0], "," );
 379                 while( ptr )
 380                 {
 381                         chan = Channel_Search( ptr );
 382                         if( chan )
 383                         {
 384                                 /* print name */
 385                                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 386                         }
 387                         if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED;
 388
 389                         /* get next channel name */
 390                         ptr = strtok( NULL, "," );
 391                 }
 392                 return CONNECTED;
 393         }
 394
 395         chan = Channel_First( );
 396         while( chan )
 397         {
 398                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 399
 400                 chan = Channel_Next( chan );
 401         }
 402
 403         /* Now print all clients which are not in any channel */
 404         c = Client_First( );
 405         snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 406         while( c )
 407         {
 408                 if(( Client_Type( c ) == CLIENT_USER ) && ( Channel_FirstChannelOf( c ) == NULL ) && ( ! strchr( Client_Modes( c ), 'i' )))
 409                 {
 410                         /* its a user, concatenate ... */
 411                         if( rpl[strlen( rpl ) - 1] != ':' ) strlcat( rpl, " ", sizeof( rpl ));
 412                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 413
 414                         if( strlen( rpl ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
 415                         {
 416                                 /* Line is gwoing too long, send now */
 417                                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 418                                 snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 419                         }
 420                 }
 421
 422                 c = Client_Next( c );
 423         }
 424         if( rpl[strlen( rpl ) - 1] != ':')
 425         {
 426                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 427         }
 428
 429         IRC_SetPenalty( from, 1 );
 430         return IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), "*" );
 431 } /* IRC_NAMES */
 432
 433
 434 static unsigned int
 435 t_diff(time_t *t, const time_t d)
 436 {
 437         time_t diff, remain;
 438
 439         diff = *t / d;
 440         remain = diff * d;
 441         *t -= remain;
 442
 443         return (unsigned int)diff;
 444 }
 445
 446
 447 static unsigned int
 448 uptime_days(time_t *now)
 449 {
 450         return t_diff(now, 60 * 60 * 24);
 451 }
 452
 453
 454 static unsigned int
 455 uptime_hrs(time_t *now)
 456 {
 457         return t_diff(now, 60 * 60);
 458 }
 459
 460
 461 static unsigned int
 462 uptime_mins(time_t *now)
 463 {
 464          return t_diff(now, 60);
 465 }
 466
 467
 468 GLOBAL bool
 469 IRC_STATS( CLIENT *Client, REQUEST *Req )
 470 {
 471         CLIENT *from, *target, *cl;
 472         CONN_ID con;
 473         char query;
 474         COMMAND *cmd;
 475         time_t time_now;
 476         unsigned int days, hrs, mins;
 477
 478         assert( Client != NULL );
 479         assert( Req != NULL );
 480
 481         if (Req->argc > 2)
 482                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 483
 484         /* use prefix to determine "From" */
 485         if (Client_Type(Client) == CLIENT_SERVER)
 486                 from = Client_Search(Req->prefix);
 487         else
 488                 from = Client;
 489
 490         if (! from)
 491                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix);
 492
 493         if (Req->argc == 2) {
 494                 /* forward to another server? */
 495                 target = Client_Search( Req->argv[1] );
 496                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER ))
 497                         return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 498
 499                 if( target != Client_ThisServer()) {
 500                         /* forward to another server */
 501                         return IRC_WriteStrClientPrefix( target, from, "STATS %s %s", Req->argv[0], Req->argv[1] );
 502                 }
 503         }
 504
 505         if (Req->argc > 0)
 506                 query = Req->argv[0][0] ? Req->argv[0][0] : '*';
 507         else
 508                 query = '*';
 509
 510         switch (query) {
 511                 case 'l':       /* Links */
 512                 case 'L':
 513                         time_now = time(NULL);
 514                         for (con = Conn_First(); con != NONE ;con = Conn_Next(con)) {
 515                                 cl = Conn_GetClient(con);
 516                                 if (!cl)
 517                                         continue;
 518                                 if ((Client_Type(cl) == CLIENT_SERVER) || (cl == Client)) {
 519                                         /* Server link or our own connection */
 520 #ifdef ZLIB
 521                                         if (Conn_Options(con) & CONN_ZIP) {
 522                                                 if (!IRC_WriteStrClient(from, RPL_STATSLINKINFOZIP_MSG,
 523                                                         Client_ID(from), Client_Mask(cl), Conn_SendQ(con),
 524                                                         Conn_SendMsg(con), Zip_SendBytes(con), Conn_SendBytes(con),
 525                                                         Conn_RecvMsg(con), Zip_RecvBytes(con), Conn_RecvBytes(con), (long)(time_now - Conn_StartTime(con))))
 526                                                                 return DISCONNECTED;
 527                                                 continue;
 528                                         }
 529 #endif
 530                                         if (!IRC_WriteStrClient(from, RPL_STATSLINKINFO_MSG, Client_ID(from),
 531                                                 Client_Mask(cl), Conn_SendQ(con), Conn_SendMsg(con), Conn_SendBytes(con),
 532                                                 Conn_RecvMsg(con), Conn_RecvBytes(con), (long)(time_now - Conn_StartTime(con))))
 533                                                         return DISCONNECTED;
 534                                 }
 535                         }
 536                         break;
 537                 case 'm':       /* IRC-Commands */
 538                 case 'M':
 539                         cmd = Parse_GetCommandStruct( );
 540                         for (; cmd->name ; cmd++) {
 541                                 if (cmd->lcount == 0 && cmd->rcount == 0)
 542                                         continue;
 543                                 if (!IRC_WriteStrClient(from, RPL_STATSCOMMANDS_MSG, Client_ID(from),
 544                                                 cmd->name, cmd->lcount, cmd->bytes, cmd->rcount))
 545                                                         return DISCONNECTED;
 546                         }
 547                         break;
 548                 case 'u':       /* server uptime */
 549                 case 'U':
 550                         time_now = time(NULL) - NGIRCd_Start;
 551                         days = uptime_days(&time_now);
 552                         hrs = uptime_hrs(&time_now);
 553                         mins = uptime_mins(&time_now);
 554                         if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from),
 555                                         days, hrs, mins, (unsigned int) time_now))
 556                                                 return DISCONNECTED;
 557                         break;
 558         }
 559
 560         IRC_SetPenalty(from, 2);
 561         return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG, Client_ID(from), query);
 562 } /* IRC_STATS */
 563
 564
 565 /**
 566  * Handler for the IRC command "SUMMON".
 567  * See RFC 2812 section 4.5. ngIRCd doesn't implement this functionality and
 568  * therefore answers with ERR_SUMMONDISABLED.
 569  */
 570 GLOBAL bool
 571 IRC_SUMMON(CLIENT * Client, REQUEST * Req)
 572 {
 573         return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
 574                                   Client_ID(Client), Req->command);
 575 } /* IRC_SUMMON */
 576
 577
 578 GLOBAL bool
 579 IRC_TIME( CLIENT *Client, REQUEST *Req )
 580 {
 581         CLIENT *from, *target;
 582         char t_str[64];
 583         time_t t;
 584
 585         assert( Client != NULL );
 586         assert( Req != NULL );
 587
 588         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 589
 590         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 591         else from = Client;
 592         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 593
 594         if( Req->argc == 1 )
 595         {
 596                 target = Client_Search( Req->argv[0] );
 597                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] );
 598
 599                 if( target != Client_ThisServer( ))
 600                 {
 601                         return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] );
 602                 }
 603         }
 604
 605         t = time( NULL );
 606         (void)strftime( t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime( &t ));
 607         return IRC_WriteStrClient( from, RPL_TIME_MSG, Client_ID( from ), Client_ID( Client_ThisServer( )), t_str );
 608 } /* IRC_TIME */
 609
 610
 611 GLOBAL bool
 612 IRC_USERHOST( CLIENT *Client, REQUEST *Req )
 613 {
 614         char rpl[COMMAND_LEN];
 615         CLIENT *c;
 616         int max, i;
 617
 618         assert( Client != NULL );
 619         assert( Req != NULL );
 620
 621         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 622
 623         if( Req->argc > 5 ) max = 5;
 624         else max = Req->argc;
 625
 626         strlcpy( rpl, RPL_USERHOST_MSG, sizeof rpl );
 627         for( i = 0; i < max; i++ )
 628         {
 629                 c = Client_Search( Req->argv[i] );
 630                 if( c && ( Client_Type( c ) == CLIENT_USER ))
 631                 {
 632                         /* This Nick is "online" */
 633                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 634                         if( Client_HasMode( c, 'o' )) strlcat( rpl, "*", sizeof( rpl ));
 635                         strlcat( rpl, "=", sizeof( rpl ));
 636                         if( Client_HasMode( c, 'a' )) strlcat( rpl, "-", sizeof( rpl ));
 637                         else strlcat( rpl, "+", sizeof( rpl ));
 638                         strlcat( rpl, Client_User( c ), sizeof( rpl ));
 639                         strlcat( rpl, "@", sizeof( rpl ));
 640                         strlcat( rpl, Client_Hostname( c ), sizeof( rpl ));
 641                         strlcat( rpl, " ", sizeof( rpl ));
 642                 }
 643         }
 644         ngt_TrimLastChr( rpl, ' ');
 645
 646         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 647 } /* IRC_USERHOST */
 648
 649
 650 /**
 651  * Handler for the IRC command "USERS".
 652  * See RFC 2812 section 4.6. As suggested there the command is disabled.
 653  */
 654 GLOBAL bool
 655 IRC_USERS(CLIENT * Client, REQUEST * Req)
 656 {
 657         return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
 658                                   Client_ID(Client), Req->command);
 659 } /* IRC_USERS */
 660
 661
 662 GLOBAL bool
 663 IRC_VERSION( CLIENT *Client, REQUEST *Req )
 664 {
 665         CLIENT *target, *prefix;
 666
 667         assert( Client != NULL );
 668         assert( Req != NULL );
 669
 670         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 671
 672         /* Ziel suchen */
 673         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
 674         else target = Client_ThisServer( );
 675
 676         /* Prefix ermitteln */
 677         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
 678         else prefix = Client;
 679         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 680
 681         /* An anderen Server weiterleiten? */
 682         if( target != Client_ThisServer( ))
 683         {
 684                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
 685
 686                 /* forwarden */
 687                 IRC_WriteStrClientPrefix( target, prefix, "VERSION %s", Req->argv[0] );
 688                 return CONNECTED;
 689         }
 690
 691         /* send version information */
 692         IRC_SetPenalty(Client, 1);
 693         return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix),
 694                                   PACKAGE_NAME, PACKAGE_VERSION,
 695                                   NGIRCd_DebugLevel, Conf_ServerName,
 696                                   NGIRCd_VersionAddition);
 697 } /* IRC_VERSION */
 698
 699
 700 static bool
 701 write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags)
 702 {
 703         return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client), channelname,
 704                         Client_User(c), Client_Hostname(c), Client_ID(Client_Introducer(c)), Client_ID(c),
 705                         flags, Client_Hops(c), Client_Info(c));
 706 }
 707
 708
 709 static const char *
 710 who_flags_status(const char *client_modes)
 711 {
 712         if (strchr(client_modes, 'a'))
 713                 return "G"; /* away */
 714         return "H";
 715 }
 716
 717
 718 static const char *
 719 who_flags_qualifier(const char *chan_user_modes)
 720 {
 721         if (strchr(chan_user_modes, 'o'))
 722                 return "@";
 723         else if (strchr(chan_user_modes, 'v'))
 724                 return "+";
 725         return "";
 726 }
 727
 728
 729 static bool
 730 IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 731 {
 732         bool is_visible, is_member, is_ircop;
 733         CL2CHAN *cl2chan;
 734         const char *client_modes;
 735         const char *chan_user_modes;
 736         char flags[8];
 737         CLIENT *c;
 738
 739         assert( Client != NULL );
 740         assert( Chan != NULL );
 741
 742         is_member = Channel_IsMemberOf(Chan, Client);
 743
 744         /* Secret channel? */
 745         if (!is_member && strchr(Channel_Modes(Chan), 's'))
 746                 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 747
 748         cl2chan = Channel_FirstMember(Chan);
 749         for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
 750                 c = Channel_GetClient(cl2chan);
 751
 752                 client_modes = Client_Modes(c);
 753                 is_ircop = strchr(client_modes, 'o') != NULL;
 754                 if (OnlyOps && !is_ircop)
 755                         continue;
 756
 757                 is_visible = strchr(client_modes, 'i') == NULL;
 758                 if (is_member || is_visible) {
 759                         strcpy(flags, who_flags_status(client_modes));
 760                         if (is_ircop)
 761                                 strlcat(flags, "*", sizeof(flags));
 762
 763                         chan_user_modes = Channel_UserModes(Chan, c);
 764                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 765
 766                         if (!write_whoreply(Client, c, Channel_Name(Chan), flags))
 767                                 return DISCONNECTED;
 768                 }
 769         }
 770         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 771 } /* IRC_Send_WHO */
 772
 773
 774 GLOBAL bool
 775 IRC_WHO( CLIENT *Client, REQUEST *Req )
 776 {
 777         bool only_ops, have_arg, client_match;
 778         const char *channelname, *client_modes, *chan_user_modes;
 779         char pattern[COMMAND_LEN];
 780         char flags[4];
 781         CL2CHAN *cl2chan;
 782         CHANNEL *chan, *cn;
 783         CLIENT *c;
 784
 785         assert( Client != NULL );
 786         assert( Req != NULL );
 787
 788         if (Req->argc > 2)
 789                 return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 790
 791         only_ops = false;
 792         have_arg = false;
 793
 794         if (Req->argc == 2) {
 795                 if (strcmp(Req->argv[1], "o") == 0)
 796                         only_ops = true;
 797 #ifdef STRICT_RFC
 798                 else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 799 #endif
 800         }
 801
 802         IRC_SetPenalty(Client, 1);
 803         if (Req->argc >= 1) { /* Channel or Mask. */
 804                 chan = Channel_Search(Req->argv[0]);
 805                 if (chan)
 806                         return IRC_Send_WHO(Client, chan, only_ops);
 807                 if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */
 808                         have_arg = true;
 809                         strlcpy(pattern, Req->argv[0], sizeof(pattern));
 810                         ngt_LowerStr(pattern);
 811                         IRC_SetPenalty(Client, 3);
 812                 }
 813         }
 814
 815         for (c = Client_First(); c != NULL; c = Client_Next(c)) {
 816                 if (Client_Type(c) != CLIENT_USER)
 817                         continue;
 818                  /*
 819                   * RFC 2812, 3.6.1:
 820                   * In the absence of the parameter, all visible (users who aren't
 821                   * invisible (user mode +i) and who don't have a common channel
 822                   * with the requesting client) are listed.
 823                   *
 824                   * The same result can be achieved by using a [sic] of "0"
 825                   * or any wildcard which will end up matching every visible user.
 826                   *
 827                   * The [sic] passed to WHO is matched against users' host, server, real name and
 828                   * nickname if the channel cannot be found.
 829                   */
 830                 client_modes = Client_Modes(c);
 831                 if (strchr(client_modes, 'i'))
 832                         continue;
 833
 834                 if (only_ops && !strchr(client_modes, 'o'))
 835                         continue;
 836
 837                 if (have_arg) { /* match pattern against user host/server/name/nick */
 838                         client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */
 839                         if (!client_match)
 840                                 client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */
 841                         if (!client_match)
 842                                 client_match = Match(Req->argv[0], Client_Info(c)); /* realname */
 843                         if (!client_match)
 844                                 client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */
 845
 846                         if (!client_match) /* This isn't the client you're looking for */
 847                                 continue;
 848                 }
 849
 850                 strcpy(flags, who_flags_status(client_modes));
 851
 852                 if (strchr(client_modes, 'o')) /* this client is an operator */
 853                         strlcat(flags, "*", sizeof(flags));
 854
 855                 /* Search suitable channel */
 856                 cl2chan = Channel_FirstChannelOf(c);
 857                 while (cl2chan) {
 858                         cn = Channel_GetChannel(cl2chan);
 859                         if (Channel_IsMemberOf(cn, Client) ||
 860                                     !strchr(Channel_Modes(cn), 's'))
 861                         {
 862                                 channelname = Channel_Name(cn);
 863                                 break;
 864                         }
 865                         cl2chan = Channel_NextChannelOf(c, cl2chan);
 866                 }
 867                 if (cl2chan) {
 868                         chan = Channel_GetChannel(cl2chan);
 869                         chan_user_modes = Channel_UserModes(chan, c);
 870                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 871                 } else
 872                         channelname = "*";
 873
 874                 if (!write_whoreply(Client, c, channelname, flags))
 875                         return DISCONNECTED;
 876         }
 877
 878         if (Req->argc > 0)
 879                 channelname = Req->argv[0];
 880         else
 881                 channelname = "*";
 882
 883         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname);
 884 } /* IRC_WHO */
 885
 886
 887 GLOBAL bool
 888 IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 889 {
 890         CLIENT *from, *target, *c;
 891         char str[LINE_LEN + 1];
 892         CL2CHAN *cl2chan;
 893         CHANNEL *chan;
 894
 895         assert( Client != NULL );
 896         assert( Req != NULL );
 897
 898         /* Bad number of parameters? */
 899         if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 900
 901         /* Search client */
 902         c = Client_Search( Req->argv[Req->argc - 1] );
 903         if(( ! c ) || ( Client_Type( c ) != CLIENT_USER )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[Req->argc - 1] );
 904
 905         /* Search sender of the WHOIS */
 906         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 907         else from = Client;
 908         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 909
 910         /* Forward to other server? */
 911         if( Req->argc > 1 )
 912         {
 913                 /* Search target server (can be specified as nick of that server!) */
 914                 target = Client_Search( Req->argv[0] );
 915                 if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 916         }
 917         else target = Client_ThisServer( );
 918
 919         assert( target != NULL );
 920
 921         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] );
 922
 923         /* Nick, user and name */
 924         if( ! IRC_WriteStrClient( from, RPL_WHOISUSER_MSG, Client_ID( from ), Client_ID( c ), Client_User( c ), Client_Hostname( c ), Client_Info( c ))) return DISCONNECTED;
 925
 926         /* Server */
 927         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;
 928
 929         /* Channels */
 930         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 931         cl2chan = Channel_FirstChannelOf( c );
 932         while( cl2chan )
 933         {
 934                 chan = Channel_GetChannel( cl2chan );
 935                 assert( chan != NULL );
 936
 937                 /* next */
 938                 cl2chan = Channel_NextChannelOf( c, cl2chan );
 939
 940                 /* Secret channel? */
 941                 if (strchr(Channel_Modes(chan), 's')
 942                     && !Channel_IsMemberOf(chan, Client))
 943                         continue;
 944
 945                 /* Local channel and request is not from a user? */
 946                 if (Client_Type(Client) == CLIENT_SERVER
 947                     && Channel_IsLocal(chan))
 948                         continue;
 949
 950                 /* Concatenate channel names */
 951                 if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
 952                 if( strchr( Channel_UserModes( chan, c ), 'o' )) strlcat( str, "@", sizeof( str ));
 953                 else if( strchr( Channel_UserModes( chan, c ), 'v' )) strlcat( str, "+", sizeof( str ));
 954                 strlcat( str, Channel_Name( chan ), sizeof( str ));
 955
 956                 if( strlen( str ) > ( LINE_LEN - CHANNEL_NAME_LEN - 4 ))
 957                 {
 958                         /* Line becomes too long: send it! */
 959                         if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 960                         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 961                 }
 962         }
 963         if( str[strlen( str ) - 1] != ':')
 964         {
 965                 /* There is data left to send: */
 966                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 967         }
 968
 969         /* IRC-Operator? */
 970         if( Client_HasMode( c, 'o' ))
 971         {
 972                 if( ! IRC_WriteStrClient( from, RPL_WHOISOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
 973         }
 974
 975         /* Idle and signon time (local clients only!) */
 976         if (Client_Conn(c) > NONE ) {
 977                 if (! IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
 978                         Client_ID(from), Client_ID(c),
 979                         (unsigned long)Conn_GetIdle(Client_Conn(c)),
 980                         (unsigned long)Conn_GetSignon(Client_Conn(c))))
 981                                 return DISCONNECTED;
 982         }
 983
 984         /* Away? */
 985         if( Client_HasMode( c, 'a' ))
 986         {
 987                 if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( c ), Client_Away( c ))) return DISCONNECTED;
 988         }
 989
 990         /* End of Whois */
 991         return IRC_WriteStrClient( from, RPL_ENDOFWHOIS_MSG, Client_ID( from ), Client_ID( c ));
 992 } /* IRC_WHOIS */
 993
 994
 995 static bool
 996 WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry)
 997 {
 998         char t_str[60];
 999
1000         (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y",
1001                                         localtime(&entry->time));
1002
1003         if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix),
1004                         entry->id, entry->user, entry->host, entry->info))
1005                                 return DISCONNECTED;
1006
1007         return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix),
1008                   entry->id, entry->server, t_str);
1009 }
1010
1011 /**
1012  * IRC "WHOWAS" function.
1013  * This function implements the IRC command "WHOWHAS". It handles local
1014  * requests and request that should be forwarded to other servers.
1015  */
1016 GLOBAL bool
1017 IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
1018 {
1019         CLIENT *target, *prefix;
1020         WHOWAS *whowas;
1021         char tok_buf[COMMAND_LEN];
1022         int max, last, count, i, nc;
1023         const char *nick;
1024
1025         assert( Client != NULL );
1026         assert( Req != NULL );
1027
1028         /* Wrong number of parameters? */
1029         if (Req->argc > 3)
1030                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
1031                                         Client_ID(Client), Req->command);
1032         if (Req->argc < 1)
1033                 return IRC_WriteStrClient(Client, ERR_NONICKNAMEGIVEN_MSG, Client_ID(Client));
1034
1035         /* Search target */
1036         if (Req->argc == 3)
1037                 target = Client_Search(Req->argv[2]);
1038         else
1039                 target = Client_ThisServer();
1040
1041         /* Get prefix */
1042         if (Client_Type(Client) == CLIENT_SERVER)
1043                 prefix = Client_Search(Req->prefix);
1044         else
1045                 prefix = Client;
1046
1047         if (!prefix)
1048                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
1049                                                 Client_ID(Client), Req->prefix);
1050
1051         /* Forward to other server? */
1052         if (target != Client_ThisServer()) {
1053                 if (!target || (Client_Type(target) != CLIENT_SERVER))
1054                         return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
1055                                         Client_ID(prefix), Req->argv[2]);
1056
1057                 /* Forward */
1058                 IRC_WriteStrClientPrefix( target, prefix, "WHOWAS %s %s %s",
1059                                           Req->argv[0], Req->argv[1],
1060                                           Req->argv[2] );
1061                 return CONNECTED;
1062         }
1063
1064         whowas = Client_GetWhowas( );
1065         last = Client_GetLastWhowasIndex( );
1066         if (last < 0)
1067                 last = 0;
1068
1069         max = DEFAULT_WHOWAS;
1070         if (Req->argc > 1) {
1071                 max = atoi(Req->argv[1]);
1072                 if (max < 1)
1073                         max = MAX_WHOWAS;
1074         }
1075
1076         /*
1077          * Break up the nick argument into a list of nicks, if applicable
1078          * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG.
1079          */
1080         strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf));
1081         nick = strtok(tok_buf, ",");
1082
1083         for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) {
1084                 nc = 0;
1085                 do {
1086                         /* Used entry? */
1087                         if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) {
1088                                 if (!WHOWAS_EntryWrite(prefix, &whowas[i]))
1089                                         return DISCONNECTED;
1090                                 nc++;
1091                                 count++;
1092                         }
1093                         /* previous entry */
1094                         i--;
1095
1096                         /* "underflow", wrap around */
1097                         if (i < 0)
1098                                 i = MAX_WHOWAS - 1;
1099
1100                         if (nc && count >= max)
1101                                 break;
1102                 } while (i != last);
1103
1104                 if (nc == 0 && !IRC_WriteStrClient(prefix, ERR_WASNOSUCHNICK_MSG,
1105                                                 Client_ID(prefix), nick))
1106                         return DISCONNECTED;
1107         }
1108         return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG, Client_ID(prefix), Req->argv[0]);
1109 } /* IRC_WHOWAS */
1110
1111
1112 GLOBAL bool
1113 IRC_Send_LUSERS( CLIENT *Client )
1114 {
1115         unsigned long cnt;
1116 #ifndef STRICT_RFC
1117         unsigned long max;
1118 #endif
1119
1120         assert( Client != NULL );
1121
1122         /* Users, services and serevers in the network */
1123         if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED;
1124
1125         /* Number of IRC operators */
1126         cnt = Client_OperCount( );
1127         if( cnt > 0 )
1128         {
1129                 if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1130         }
1131
1132         /* Unknown connections */
1133         cnt = Client_UnknownCount( );
1134         if( cnt > 0 )
1135         {
1136                 if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1137         }
1138
1139         /* Number of created channels */
1140         if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED;
1141
1142         /* Number of local users, services and servers */
1143         if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED;
1144
1145 #ifndef STRICT_RFC
1146         /* Maximum number of local users */
1147         cnt = Client_MyUserCount();
1148         max = Client_MyMaxUserCount();
1149         if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client),
1150                         cnt, max, cnt, max))
1151                 return DISCONNECTED;
1152         /* Maximum number of users in the network */
1153         cnt = Client_UserCount();
1154         max = Client_MaxUserCount();
1155         if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client),
1156                         cnt, max, cnt, max))
1157                 return DISCONNECTED;
1158 #endif
1159
1160         return CONNECTED;
1161 } /* IRC_Send_LUSERS */
1162
1163
1164 static bool
1165 Show_MOTD_Start(CLIENT *Client)
1166 {
1167         return IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG,
1168                 Client_ID( Client ), Client_ID( Client_ThisServer( )));
1169 }
1170
1171 static bool
1172 Show_MOTD_Sendline(CLIENT *Client, const char *msg)
1173 {
1174         return IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID( Client ), msg);
1175 }
1176
1177 static bool
1178 Show_MOTD_End(CLIENT *Client)
1179 {
1180         return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ));
1181 }
1182
1183 #ifdef SSL_SUPPORT
1184 static bool Show_MOTD_SSLInfo(CLIENT *Client)
1185 {
1186         bool ret = true;
1187         char buf[COMMAND_LEN] = "Connected using Cipher ";
1188
1189         if (!Conn_GetCipherInfo(Client_Conn(Client), buf + 23, sizeof buf - 23))
1190                 return true;
1191
1192         if (!Show_MOTD_Sendline(Client, buf))
1193                 ret = false;
1194
1195         return ret;
1196 }
1197 #else
1198 static inline bool Show_MOTD_SSLInfo(UNUSED CLIENT *c) { return true; }
1199 #endif
1200
1201 GLOBAL bool
1202 IRC_Show_MOTD( CLIENT *Client )
1203 {
1204         char line[127];
1205         FILE *fd;
1206
1207         assert( Client != NULL );
1208
1209         if (Conf_MotdPhrase[0]) {
1210                 if (!Show_MOTD_Start(Client))
1211                         return DISCONNECTED;
1212                 if (!Show_MOTD_Sendline(Client, Conf_MotdPhrase))
1213                         return DISCONNECTED;
1214                 goto out;
1215         }
1216
1217         fd = fopen( Conf_MotdFile, "r" );
1218         if( ! fd ) {
1219                 Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
1220                 if (Conn_UsesSSL(Client_Conn(Client))) {
1221                         if (!Show_MOTD_Start(Client))
1222                                 return DISCONNECTED;
1223                         goto out;
1224                 }
1225                 return IRC_WriteStrClient( Client, ERR_NOMOTD_MSG, Client_ID( Client ) );
1226         }
1227
1228         if (!Show_MOTD_Start( Client )) {
1229                 fclose(fd);
1230                 return false;
1231         }
1232
1233         while (fgets( line, (int)sizeof line, fd )) {
1234                 ngt_TrimLastChr( line, '\n');
1235
1236                 if( ! Show_MOTD_Sendline( Client, line)) {
1237                         fclose( fd );
1238                         return false;
1239                 }
1240         }
1241         fclose(fd);
1242 out:
1243         if (!Show_MOTD_SSLInfo(Client))
1244                 return DISCONNECTED;
1245         return Show_MOTD_End(Client);
1246 } /* IRC_Show_MOTD */
1247
1248
1249 GLOBAL bool
1250 IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan )
1251 {
1252         bool is_visible, is_member;
1253         char str[LINE_LEN + 1];
1254         CL2CHAN *cl2chan;
1255         CLIENT *cl;
1256
1257         assert( Client != NULL );
1258         assert( Chan != NULL );
1259
1260         if( Channel_IsMemberOf( Chan, Client )) is_member = true;
1261         else is_member = false;
1262
1263         /* Secret channel? */
1264         if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED;
1265
1266         /* Alle Mitglieder suchen */
1267         snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1268         cl2chan = Channel_FirstMember( Chan );
1269         while( cl2chan )
1270         {
1271                 cl = Channel_GetClient( cl2chan );
1272
1273                 if( strchr( Client_Modes( cl ), 'i' )) is_visible = false;
1274                 else is_visible = true;
1275
1276                 if( is_member || is_visible )
1277                 {
1278                         /* Nick anhaengen */
1279                         if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
1280                         if( strchr( Channel_UserModes( Chan, cl ), 'o' )) strlcat( str, "@", sizeof( str ));
1281                         else if( strchr( Channel_UserModes( Chan, cl ), 'v' )) strlcat( str, "+", sizeof( str ));
1282                         strlcat( str, Client_ID( cl ), sizeof( str ));
1283
1284                         if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
1285                         {
1286                                 /* Zeile wird zu lang: senden! */
1287                                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1288                                 snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1289                         }
1290                 }
1291
1292                 /* naechstes Mitglied suchen */
1293                 cl2chan = Channel_NextMember( Chan, cl2chan );
1294         }
1295         if( str[strlen( str ) - 1] != ':')
1296         {
1297                 /* Es sind noch Daten da, die gesendet werden muessen */
1298                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1299         }
1300
1301         return CONNECTED;
1302 } /* IRC_Send_NAMES */
1303
1304
1305
1306 /**
1307  * Send the ISUPPORT numeric (005).
1308  * This numeric indicates the features that are supported by this server.
1309  * See <http://www.irc.org/tech_docs/005.html> for details.
1310  */
1311 GLOBAL bool
1312 IRC_Send_ISUPPORT PARAMS((CLIENT * Client))
1313 {
1314         if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client),
1315                                 Conf_MaxJoins))
1316                 return DISCONNECTED;
1317         return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
1318                                   CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
1319                                   COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
1320                                   COMMAND_LEN - 113);
1321 } /* IRC_Send_ISUPPORT */
1322
1323
1324 /* -eof- */