src/ngircd/conf.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001,2002 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  * Configuration management (reading, parsing & validation)
  12  */
  13
  14
  15 #include "portab.h"
  16
  17 #include "imp.h"
  18 #include <assert.h>
  19 #include <errno.h>
  20 #ifdef PROTOTYPES
  21 #       include <stdarg.h>
  22 #else
  23 #       include <varargs.h>
  24 #endif
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <strings.h>
  29 #include <unistd.h>
  30 #include <pwd.h>
  31 #include <grp.h>
  32 #include <sys/types.h>
  33 #include <unistd.h>
  34
  35 #ifdef HAVE_CTYPE_H
  36 # include <ctype.h>
  37 #endif
  38
  39 #include "array.h"
  40 #include "ngircd.h"
  41 #include "conn.h"
  42 #include "client.h"
  43 #include "defines.h"
  44 #include "log.h"
  45 #include "match.h"
  46 #include "resolve.h"
  47 #include "tool.h"
  48
  49 #include "exp.h"
  50 #include "conf.h"
  51
  52
  53 static bool Use_Log = true;
  54 static CONF_SERVER New_Server;
  55 static int New_Server_Idx;
  56
  57
  58 static void Set_Defaults PARAMS(( bool InitServers ));
  59 static bool Read_Config PARAMS(( bool ngircd_starting ));
  60 static bool Validate_Config PARAMS(( bool TestOnly, bool Rehash ));
  61
  62 static void Handle_GLOBAL PARAMS(( int Line, char *Var, char *Arg ));
  63 static void Handle_OPERATOR PARAMS(( int Line, char *Var, char *Arg ));
  64 static void Handle_SERVER PARAMS(( int Line, char *Var, char *Arg ));
  65 static void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
  66
  67 static void Config_Error PARAMS(( const int Level, const char *Format, ... ));
  68
  69 static void Config_Error_NaN PARAMS(( const int LINE, const char *Value ));
  70 static void Config_Error_TooLong PARAMS(( const int LINE, const char *Value ));
  71
  72 static void Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
  73
  74 #ifdef WANT_IPV6
  75 #define DEFAULT_LISTEN_ADDRSTR "::,0.0.0.0"
  76 #else
  77 #define DEFAULT_LISTEN_ADDRSTR "0.0.0.0"
  78 #endif
  79
  80 #ifdef SSL_SUPPORT
  81 struct SSLOptions Conf_SSLOptions;
  82
  83 static void
  84 ConfSSL_Init(void)
  85 {
  86         free(Conf_SSLOptions.KeyFile);
  87         Conf_SSLOptions.KeyFile = NULL;
  88
  89         free(Conf_SSLOptions.CertFile);
  90         Conf_SSLOptions.CertFile = NULL;
  91
  92         free(Conf_SSLOptions.DHFile);
  93         Conf_SSLOptions.DHFile = NULL;
  94         array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
  95 }
  96
  97
  98 static void
  99 ConfSSL_Puts(void)
 100 {
 101         if (Conf_SSLOptions.KeyFile)
 102                 printf( "  SSLKeyFile = %s\n", Conf_SSLOptions.KeyFile);
 103         if (Conf_SSLOptions.CertFile)
 104                 printf( "  SSLCertFile = %s\n", Conf_SSLOptions.CertFile);
 105         if (Conf_SSLOptions.DHFile)
 106                 printf( "  SSLDHFile = %s\n", Conf_SSLOptions.DHFile);
 107         if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
 108                 puts("  SSLKeyFilePassword = <secret>"  );
 109         array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
 110 }
 111 #endif
 112
 113 static char *
 114 strdup_warn(const char *str)
 115 {
 116         char *ptr = strdup(str);
 117         if (!ptr)
 118                 Config_Error(LOG_ERR, "Could not allocate mem for string: %s", str);
 119         return ptr;
 120 }
 121
 122
 123 static void
 124 ports_puts(array *a)
 125 {
 126         size_t len;
 127         UINT16 *ports;
 128         len = array_length(a, sizeof(UINT16));
 129         if (len--) {
 130                 ports = (UINT16*) array_start(a);
 131                 printf("%u", (unsigned int) *ports);
 132                 while (len--) {
 133                         ports++;
 134                         printf(", %u", (unsigned int) *ports);
 135                 }
 136         }
 137         putc('\n', stdout);
 138 }
 139
 140
 141 static void
 142 ports_parse(array *a, int Line, char *Arg)
 143 {
 144         char *ptr;
 145         int port;
 146         UINT16 port16;
 147
 148         array_trunc(a);
 149
 150         /* Ports on that the server should listen. More port numbers
 151          * must be separated by "," */
 152         ptr = strtok( Arg, "," );
 153         while (ptr) {
 154                 ngt_TrimStr( ptr );
 155                 port = atol( ptr );
 156                 if (port > 0 && port < 0xFFFF) {
 157                         port16 = (UINT16) port;
 158                         if (!array_catb(a, (char*)&port16, sizeof port16))
 159                                 Config_Error(LOG_ERR, "%s, line %d Could not add port number %ld: %s",
 160                                                         NGIRCd_ConfFile, Line, port, strerror(errno));
 161                 } else {
 162                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!",
 163                                                                         NGIRCd_ConfFile, Line, port );
 164                 }
 165
 166                 ptr = strtok( NULL, "," );
 167         }
 168 }
 169
 170
 171 GLOBAL void
 172 Conf_Init( void )
 173 {
 174         Read_Config( true );
 175         Validate_Config(false, false);
 176 } /* Config_Init */
 177
 178
 179 GLOBAL bool
 180 Conf_Rehash( void )
 181 {
 182         if (!Read_Config(false))
 183                 return false;
 184         Validate_Config(false, true);
 185
 186         /* Update CLIENT structure of local server */
 187         Client_SetInfo(Client_ThisServer(), Conf_ServerInfo);
 188         return true;
 189 } /* Config_Rehash */
 190
 191
 192 static const char*
 193 yesno_to_str(int boolean_value)
 194 {
 195         if (boolean_value)
 196                 return "yes";
 197         return "no";
 198 }
 199
 200
 201 GLOBAL int
 202 Conf_Test( void )
 203 {
 204         /* Read configuration, validate and output it. */
 205
 206         struct passwd *pwd;
 207         struct group *grp;
 208         unsigned int i;
 209         char *topic;
 210         bool config_valid;
 211
 212         Use_Log = false;
 213
 214         if (! Read_Config(true))
 215                 return 1;
 216
 217         config_valid = Validate_Config(true, false);
 218
 219         /* If stdin and stdout ("you can read our nice message and we can
 220          * read in your keypress") are valid tty's, wait for a key: */
 221         if( isatty( fileno( stdin )) && isatty( fileno( stdout ))) {
 222                 puts( "OK, press enter to see a dump of your service configuration ..." );
 223                 getchar( );
 224         } else {
 225                 puts( "Ok, dump of your server configuration follows:\n" );
 226         }
 227
 228         puts( "[GLOBAL]" );
 229         printf( "  Name = %s\n", Conf_ServerName );
 230         printf( "  Info = %s\n", Conf_ServerInfo );
 231         printf( "  Password = %s\n", Conf_ServerPwd );
 232         printf( "  AdminInfo1 = %s\n", Conf_ServerAdmin1 );
 233         printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
 234         printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
 235         printf( "  MotdFile = %s\n", Conf_MotdFile );
 236         printf( "  MotdPhrase = %s\n", Conf_MotdPhrase );
 237         printf( "  ChrootDir = %s\n", Conf_Chroot );
 238         printf( "  PidFile = %s\n", Conf_PidFile);
 239         printf("  Listen = %s\n", Conf_ListenAddress);
 240         fputs("  Ports = ", stdout);
 241
 242         ports_puts(&Conf_ListenPorts);
 243 #ifdef SSL_SUPPORT
 244         fputs("  SSLPorts = ", stdout);
 245         ports_puts(&Conf_SSLOptions.ListenPorts);
 246         ConfSSL_Puts();
 247 #endif
 248
 249         pwd = getpwuid( Conf_UID );
 250         if( pwd ) printf( "  ServerUID = %s\n", pwd->pw_name );
 251         else printf( "  ServerUID = %ld\n", (long)Conf_UID );
 252         grp = getgrgid( Conf_GID );
 253         if( grp ) printf( "  ServerGID = %s\n", grp->gr_name );
 254         else printf( "  ServerGID = %ld\n", (long)Conf_GID );
 255         printf( "  PingTimeout = %d\n", Conf_PingTimeout );
 256         printf( "  PongTimeout = %d\n", Conf_PongTimeout );
 257         printf( "  ConnectRetry = %d\n", Conf_ConnectRetry );
 258         printf( "  OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
 259         printf( "  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
 260         printf( "  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
 261         printf( "  NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
 262         printf( "  NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
 263
 264 #ifdef WANT_IPV6
 265         printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
 266         printf("  ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
 267 #endif
 268         printf( "  MaxConnections = %ld\n", Conf_MaxConnections);
 269         printf( "  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
 270         printf( "  MaxJoins = %d\n", Conf_MaxJoins>0 ? Conf_MaxJoins : -1);
 271         printf( "  MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
 272
 273         for( i = 0; i < Conf_Oper_Count; i++ ) {
 274                 if( ! Conf_Oper[i].name[0] ) continue;
 275
 276                 /* Valid "Operator" section */
 277                 puts( "[OPERATOR]" );
 278                 printf( "  Name = %s\n", Conf_Oper[i].name );
 279                 printf( "  Password = %s\n", Conf_Oper[i].pwd );
 280                 if ( Conf_Oper[i].mask ) printf( "  Mask = %s\n", Conf_Oper[i].mask );
 281                 puts( "" );
 282         }
 283
 284         for( i = 0; i < MAX_SERVERS; i++ ) {
 285                 if( ! Conf_Server[i].name[0] ) continue;
 286
 287                 /* Valid "Server" section */
 288                 puts( "[SERVER]" );
 289                 printf( "  Name = %s\n", Conf_Server[i].name );
 290                 printf( "  Host = %s\n", Conf_Server[i].host );
 291                 printf( "  Port = %u\n", (unsigned int)Conf_Server[i].port );
 292 #ifdef SSL_SUPPORT
 293                 printf( "  SSLConnect = %s\n", Conf_Server[i].SSLConnect?"yes":"no");
 294 #endif
 295                 printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
 296                 printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
 297                 printf( "  ServiceMask = %s\n", Conf_Server[i].svs_mask);
 298                 printf( "  Group = %d\n", Conf_Server[i].group );
 299                 printf( "  Passive = %s\n\n", Conf_Server[i].flags & CONF_SFLAG_DISABLED ? "yes" : "no");
 300         }
 301
 302         for( i = 0; i < Conf_Channel_Count; i++ ) {
 303                 if( ! Conf_Channel[i].name[0] ) continue;
 304
 305                 /* Valid "Channel" section */
 306                 puts( "[CHANNEL]" );
 307                 printf( "  Name = %s\n", Conf_Channel[i].name );
 308                 printf( "  Modes = %s\n", Conf_Channel[i].modes );
 309                 printf( "  Key = %s\n", Conf_Channel[i].key );
 310                 printf( "  MaxUsers = %lu\n", Conf_Channel[i].maxusers );
 311
 312                 topic = (char*)array_start(&Conf_Channel[i].topic);
 313                 printf( "  Topic = %s\n\n", topic ? topic : "");
 314         }
 315
 316         return (config_valid ? 0 : 1);
 317 } /* Conf_Test */
 318
 319
 320 GLOBAL void
 321 Conf_UnsetServer( CONN_ID Idx )
 322 {
 323         /* Set next time for next connection attempt, if this is a server
 324          * link that is (still) configured here. If the server is set as
 325          * "once", delete it from our configuration.
 326          * Non-Server-Connections will be silently ignored. */
 327
 328         int i;
 329         time_t t;
 330
 331         /* Check all our configured servers */
 332         for( i = 0; i < MAX_SERVERS; i++ ) {
 333                 if( Conf_Server[i].conn_id != Idx ) continue;
 334
 335                 /* Gotcha! Mark server configuration as "unused": */
 336                 Conf_Server[i].conn_id = NONE;
 337
 338                 if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 339                         /* Delete configuration here */
 340                         Init_Server_Struct( &Conf_Server[i] );
 341                 } else {
 342                         /* Set time for next connect attempt */
 343                         t = time(NULL);
 344                         if (Conf_Server[i].lasttry < t - Conf_ConnectRetry) {
 345                                 /* The connection has been "long", so we don't
 346                                  * require the next attempt to be delayed. */
 347                                 Conf_Server[i].lasttry =
 348                                         t - Conf_ConnectRetry + RECONNECT_DELAY;
 349                         } else
 350                                 Conf_Server[i].lasttry = t;
 351                 }
 352         }
 353 } /* Conf_UnsetServer */
 354
 355
 356 GLOBAL void
 357 Conf_SetServer( int ConfServer, CONN_ID Idx )
 358 {
 359         /* Set connection for specified configured server */
 360
 361         assert( ConfServer > NONE );
 362         assert( Idx > NONE );
 363
 364         Conf_Server[ConfServer].conn_id = Idx;
 365 } /* Conf_SetServer */
 366
 367
 368 GLOBAL int
 369 Conf_GetServer( CONN_ID Idx )
 370 {
 371         /* Get index of server in configuration structure */
 372
 373         int i = 0;
 374
 375         assert( Idx > NONE );
 376
 377         for( i = 0; i < MAX_SERVERS; i++ ) {
 378                 if( Conf_Server[i].conn_id == Idx ) return i;
 379         }
 380         return NONE;
 381 } /* Conf_GetServer */
 382
 383
 384 GLOBAL bool
 385 Conf_EnableServer( char *Name, UINT16 Port )
 386 {
 387         /* Enable specified server and adjust port */
 388
 389         int i;
 390
 391         assert( Name != NULL );
 392
 393         for( i = 0; i < MAX_SERVERS; i++ ) {
 394                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 395                         /* Gotcha! Set port and enable server: */
 396                         Conf_Server[i].port = Port;
 397                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 398                         return true;
 399                 }
 400         }
 401         return false;
 402 } /* Conf_EnableServer */
 403
 404
 405 GLOBAL bool
 406 Conf_EnablePassiveServer(const char *Name)
 407 {
 408         /* Enable specified server */
 409         int i;
 410
 411         assert( Name != NULL );
 412         for (i = 0; i < MAX_SERVERS; i++) {
 413                 if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
 414                         /* BINGO! Enable server */
 415                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 416                         return true;
 417                 }
 418         }
 419         return false;
 420 } /* Conf_EnablePassiveServer */
 421
 422
 423 GLOBAL bool
 424 Conf_DisableServer( char *Name )
 425 {
 426         /* Enable specified server and adjust port */
 427
 428         int i;
 429
 430         assert( Name != NULL );
 431
 432         for( i = 0; i < MAX_SERVERS; i++ ) {
 433                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 434                         /* Gotcha! Disable and disconnect server: */
 435                         Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
 436                         if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
 437                         return true;
 438                 }
 439         }
 440         return false;
 441 } /* Conf_DisableServer */
 442
 443
 444 GLOBAL bool
 445 Conf_AddServer( char *Name, UINT16 Port, char *Host, char *MyPwd, char *PeerPwd )
 446 {
 447         /* Add new server to configuration */
 448
 449         int i;
 450
 451         assert( Name != NULL );
 452         assert( Host != NULL );
 453         assert( MyPwd != NULL );
 454         assert( PeerPwd != NULL );
 455
 456         /* Search unused item in server configuration structure */
 457         for( i = 0; i < MAX_SERVERS; i++ ) {
 458                 /* Is this item used? */
 459                 if( ! Conf_Server[i].name[0] ) break;
 460         }
 461         if( i >= MAX_SERVERS ) return false;
 462
 463         Init_Server_Struct( &Conf_Server[i] );
 464         strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
 465         strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
 466         strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
 467         strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
 468         Conf_Server[i].port = Port;
 469         Conf_Server[i].flags = CONF_SFLAG_ONCE;
 470
 471         return true;
 472 } /* Conf_AddServer */
 473
 474
 475 /**
 476  * Check if the given nick name is an service
 477  */
 478 GLOBAL bool
 479 Conf_IsService(int ConfServer, char *Nick)
 480 {
 481         return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
 482 } /* Conf_IsService */
 483
 484
 485 static void
 486 Set_Defaults( bool InitServers )
 487 {
 488         /* Initialize configuration variables with default values. */
 489
 490         int i;
 491
 492         strcpy( Conf_ServerName, "" );
 493         snprintf( Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s", PACKAGE_NAME, PACKAGE_VERSION );
 494         strcpy( Conf_ServerPwd, "" );
 495
 496         strcpy( Conf_ServerAdmin1, "" );
 497         strcpy( Conf_ServerAdmin2, "" );
 498         strcpy( Conf_ServerAdminMail, "" );
 499
 500         strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
 501         strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
 502
 503         strlcpy( Conf_MotdPhrase, MOTD_PHRASE, sizeof( Conf_MotdPhrase ));
 504
 505         strlcpy( Conf_Chroot, CHROOT_DIR, sizeof( Conf_Chroot ));
 506
 507         strlcpy( Conf_PidFile, PID_FILE, sizeof( Conf_PidFile ));
 508
 509         free(Conf_ListenAddress);
 510         Conf_ListenAddress = NULL;
 511         Conf_UID = Conf_GID = 0;
 512
 513         Conf_PingTimeout = 120;
 514         Conf_PongTimeout = 20;
 515
 516         Conf_ConnectRetry = 60;
 517
 518         Conf_Oper_Count = 0;
 519         Conf_Channel_Count = 0;
 520
 521         Conf_OperCanMode = false;
 522         Conf_NoDNS = false;
 523         Conf_NoIdent = false;
 524         Conf_PredefChannelsOnly = false;
 525         Conf_OperServerMode = false;
 526
 527         Conf_ConnectIPv4 = true;
 528         Conf_ConnectIPv6 = true;
 529
 530         Conf_MaxConnections = 0;
 531         Conf_MaxConnectionsIP = 5;
 532         Conf_MaxJoins = 10;
 533         Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
 534
 535         /* Initialize server configuration structures */
 536         if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
 537 } /* Set_Defaults */
 538
 539
 540 static bool
 541 Read_Config( bool ngircd_starting )
 542 {
 543         /* Read configuration file. */
 544
 545         char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
 546         const UINT16 defaultport = 6667;
 547         int line, i, n;
 548         FILE *fd;
 549
 550         /* Open configuration file */
 551         fd = fopen( NGIRCd_ConfFile, "r" );
 552         if( ! fd ) {
 553                 /* No configuration file found! */
 554                 Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
 555                                         NGIRCd_ConfFile, strerror( errno ));
 556                 if (!ngircd_starting)
 557                         return false;
 558                 Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 559                 exit( 1 );
 560         }
 561
 562         Set_Defaults( ngircd_starting );
 563
 564         Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
 565
 566         /* Clean up server configuration structure: mark all already
 567          * configured servers as "once" so that they are deleted
 568          * after the next disconnect and delete all unused servers.
 569          * And delete all servers which are "duplicates" of servers
 570          * that are already marked as "once" (such servers have been
 571          * created by the last rehash but are now useless). */
 572         for( i = 0; i < MAX_SERVERS; i++ ) {
 573                 if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
 574                 else {
 575                         /* This structure is in use ... */
 576                         if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 577                                 /* Check for duplicates */
 578                                 for( n = 0; n < MAX_SERVERS; n++ ) {
 579                                         if( n == i ) continue;
 580
 581                                         if( Conf_Server[i].conn_id == Conf_Server[n].conn_id ) {
 582                                                 Init_Server_Struct( &Conf_Server[n] );
 583 #ifdef DEBUG
 584                                                 Log(LOG_DEBUG,"Deleted unused duplicate server %d (kept %d).",
 585                                                                                                 n, i );
 586 #endif
 587                                         }
 588                                 }
 589                         } else {
 590                                 /* Mark server as "once" */
 591                                 Conf_Server[i].flags |= CONF_SFLAG_ONCE;
 592                                 Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
 593                         }
 594                 }
 595         }
 596
 597         /* Initialize variables */
 598         line = 0;
 599         strcpy( section, "" );
 600         Init_Server_Struct( &New_Server );
 601         New_Server_Idx = NONE;
 602 #ifdef SSL_SUPPORT
 603         ConfSSL_Init();
 604 #endif
 605         /* Read configuration file */
 606         while( true ) {
 607                 if( ! fgets( str, LINE_LEN, fd )) break;
 608                 ngt_TrimStr( str );
 609                 line++;
 610
 611                 /* Skip comments and empty lines */
 612                 if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
 613
 614                 /* Is this the beginning of a new section? */
 615                 if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
 616                         strlcpy( section, str, sizeof( section ));
 617                         if( strcasecmp( section, "[GLOBAL]" ) == 0 )
 618                                 continue;
 619
 620                         if( strcasecmp( section, "[OPERATOR]" ) == 0 ) {
 621                                 if( Conf_Oper_Count + 1 > MAX_OPERATORS )
 622                                         Config_Error( LOG_ERR, "Too many operators configured.");
 623                                 else {
 624                                         /* Initialize new operator structure */
 625                                         Conf_Oper[Conf_Oper_Count].name[0] = '\0';
 626                                         Conf_Oper[Conf_Oper_Count].pwd[0] = '\0';
 627                                         if (Conf_Oper[Conf_Oper_Count].mask) {
 628                                                 free(Conf_Oper[Conf_Oper_Count].mask );
 629                                                 Conf_Oper[Conf_Oper_Count].mask = NULL;
 630                                         }
 631                                         Conf_Oper_Count++;
 632                                 }
 633                                 continue;
 634                         }
 635                         if( strcasecmp( section, "[SERVER]" ) == 0 ) {
 636                                 /* Check if there is already a server to add */
 637                                 if( New_Server.name[0] ) {
 638                                         /* Copy data to "real" server structure */
 639                                         assert( New_Server_Idx > NONE );
 640                                         Conf_Server[New_Server_Idx] = New_Server;
 641                                 }
 642
 643                                 /* Re-init structure for new server */
 644                                 Init_Server_Struct( &New_Server );
 645
 646                                 /* Search unused item in server configuration structure */
 647                                 for( i = 0; i < MAX_SERVERS; i++ ) {
 648                                         /* Is this item used? */
 649                                         if( ! Conf_Server[i].name[0] ) break;
 650                                 }
 651                                 if( i >= MAX_SERVERS ) {
 652                                         /* Oops, no free item found! */
 653                                         Config_Error( LOG_ERR, "Too many servers configured." );
 654                                         New_Server_Idx = NONE;
 655                                 }
 656                                 else New_Server_Idx = i;
 657                                 continue;
 658                         }
 659                         if( strcasecmp( section, "[CHANNEL]" ) == 0 ) {
 660                                 if( Conf_Channel_Count + 1 > MAX_DEFCHANNELS ) {
 661                                         Config_Error( LOG_ERR, "Too many pre-defined channels configured." );
 662                                 } else {
 663                                         /* Initialize new channel structure */
 664                                         strcpy( Conf_Channel[Conf_Channel_Count].name, "" );
 665                                         strcpy( Conf_Channel[Conf_Channel_Count].modes, "" );
 666                                         strcpy( Conf_Channel[Conf_Channel_Count].key, "" );
 667                                         Conf_Channel[Conf_Channel_Count].maxusers = 0;
 668                                         array_free(&Conf_Channel[Conf_Channel_Count].topic);
 669                                         Conf_Channel_Count++;
 670                                 }
 671                                 continue;
 672                         }
 673                         Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
 674                         section[0] = 0x1;
 675                 }
 676                 if( section[0] == 0x1 ) continue;
 677
 678                 /* Split line into variable name and parameters */
 679                 ptr = strchr( str, '=' );
 680                 if( ! ptr ) {
 681                         Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
 682                         continue;
 683                 }
 684                 *ptr = '\0';
 685                 var = str; ngt_TrimStr( var );
 686                 arg = ptr + 1; ngt_TrimStr( arg );
 687
 688                 if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
 689                 else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
 690                 else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
 691                 else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
 692                 else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
 693         }
 694
 695         /* Close configuration file */
 696         fclose( fd );
 697
 698         /* Check if there is still a server to add */
 699         if( New_Server.name[0] ) {
 700                 /* Copy data to "real" server structure */
 701                 assert( New_Server_Idx > NONE );
 702                 Conf_Server[New_Server_Idx] = New_Server;
 703         }
 704
 705         if (0 == array_length(&Conf_ListenPorts, sizeof(UINT16))) {
 706                 if (!array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport)) {
 707                         Config_Error( LOG_ALERT, "Could not add default listening Port %u: %s",
 708                                                         (unsigned int) defaultport, strerror(errno));
 709                         exit( 1 );
 710                 }
 711         }
 712
 713         if (!Conf_ListenAddress)
 714                 Conf_ListenAddress = strdup_warn(DEFAULT_LISTEN_ADDRSTR);
 715
 716         if (!Conf_ListenAddress) {
 717                 Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 718                 exit(1);
 719         }
 720         return true;
 721 } /* Read_Config */
 722
 723
 724 static bool
 725 Check_ArgIsTrue( const char *Arg )
 726 {
 727         if( strcasecmp( Arg, "yes" ) == 0 ) return true;
 728         if( strcasecmp( Arg, "true" ) == 0 ) return true;
 729         if( atoi( Arg ) != 0 ) return true;
 730
 731         return false;
 732 } /* Check_ArgIsTrue */
 733
 734
 735 static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
 736 {
 737         unsigned new;
 738
 739         new = (unsigned) atoi(Arg) + 1;
 740         if (new > CLIENT_NICK_LEN) {
 741                 Config_Error(LOG_WARNING,
 742                              "%s, line %d: Value of \"MaxNickLength\" exceeds %u!",
 743                              NGIRCd_ConfFile, Line, CLIENT_NICK_LEN - 1);
 744                 return CLIENT_NICK_LEN;
 745         }
 746         if (new < 2) {
 747                 Config_Error(LOG_WARNING,
 748                              "%s, line %d: Value of \"MaxNickLength\" must be at least 1!",
 749                              NGIRCd_ConfFile, Line);
 750                 return 2;
 751         }
 752         return new;
 753 } /* Handle_MaxNickLength */
 754
 755
 756 static void
 757 Handle_GLOBAL( int Line, char *Var, char *Arg )
 758 {
 759         struct passwd *pwd;
 760         struct group *grp;
 761         size_t len;
 762
 763         assert( Line > 0 );
 764         assert( Var != NULL );
 765         assert( Arg != NULL );
 766
 767         if( strcasecmp( Var, "Name" ) == 0 ) {
 768                 /* Server name */
 769                 len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
 770                 if (len >= sizeof( Conf_ServerName ))
 771                         Config_Error_TooLong( Line, Var );
 772                 return;
 773         }
 774         if( strcasecmp( Var, "Info" ) == 0 ) {
 775                 /* Info text of server */
 776                 len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
 777                 if (len >= sizeof( Conf_ServerInfo ))
 778                         Config_Error_TooLong ( Line, Var );
 779                 return;
 780         }
 781         if( strcasecmp( Var, "Password" ) == 0 ) {
 782                 /* Global server password */
 783                 len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
 784                 if (len >= sizeof( Conf_ServerPwd ))
 785                         Config_Error_TooLong( Line, Var );
 786                 return;
 787         }
 788         if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
 789                 /* Administrative info #1 */
 790                 len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
 791                 if (len >= sizeof( Conf_ServerAdmin1 ))
 792                         Config_Error_TooLong ( Line, Var );
 793                 return;
 794         }
 795         if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
 796                 /* Administrative info #2 */
 797                 len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
 798                 if (len >= sizeof( Conf_ServerAdmin2 ))
 799                         Config_Error_TooLong ( Line, Var );
 800                 return;
 801         }
 802         if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
 803                 /* Administrative email contact */
 804                 len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
 805                 if (len >= sizeof( Conf_ServerAdminMail ))
 806                         Config_Error_TooLong( Line, Var );
 807                 return;
 808         }
 809
 810         if( strcasecmp( Var, "Ports" ) == 0 ) {
 811                 ports_parse(&Conf_ListenPorts, Line, Arg);
 812                 return;
 813         }
 814         if( strcasecmp( Var, "MotdFile" ) == 0 ) {
 815                 /* "Message of the day" (MOTD) file */
 816                 len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
 817                 if (len >= sizeof( Conf_MotdFile ))
 818                         Config_Error_TooLong( Line, Var );
 819                 return;
 820         }
 821         if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
 822                 /* "Message of the day" phrase (instead of file) */
 823                 len = strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase ));
 824                 if (len >= sizeof( Conf_MotdPhrase ))
 825                         Config_Error_TooLong( Line, Var );
 826                 return;
 827         }
 828         if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
 829                 /* directory for chroot() */
 830                 len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
 831                 if (len >= sizeof( Conf_Chroot ))
 832                         Config_Error_TooLong( Line, Var );
 833                 return;
 834         }
 835         if ( strcasecmp( Var, "PidFile" ) == 0 ) {
 836                 /* name of pidfile */
 837                 len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
 838                 if (len >= sizeof( Conf_PidFile ))
 839                         Config_Error_TooLong( Line, Var );
 840                 return;
 841         }
 842         if( strcasecmp( Var, "ServerUID" ) == 0 ) {
 843                 /* UID the daemon should switch to */
 844                 pwd = getpwnam( Arg );
 845                 if( pwd ) Conf_UID = pwd->pw_uid;
 846                 else {
 847 #ifdef HAVE_ISDIGIT
 848                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 849                         else
 850 #endif
 851                         Conf_UID = (unsigned int)atoi( Arg );
 852                 }
 853                 return;
 854         }
 855         if( strcasecmp( Var, "ServerGID" ) == 0 ) {
 856                 /* GID the daemon should use */
 857                 grp = getgrnam( Arg );
 858                 if( grp ) Conf_GID = grp->gr_gid;
 859                 else {
 860 #ifdef HAVE_ISDIGIT
 861                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 862                         else
 863 #endif
 864                         Conf_GID = (unsigned int)atoi( Arg );
 865                 }
 866                 return;
 867         }
 868         if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
 869                 /* PING timeout */
 870                 Conf_PingTimeout = atoi( Arg );
 871                 if( Conf_PingTimeout < 5 ) {
 872                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
 873                                                                         NGIRCd_ConfFile, Line );
 874                         Conf_PingTimeout = 5;
 875                 }
 876                 return;
 877         }
 878         if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
 879                 /* PONG timeout */
 880                 Conf_PongTimeout = atoi( Arg );
 881                 if( Conf_PongTimeout < 5 ) {
 882                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
 883                                                                         NGIRCd_ConfFile, Line );
 884                         Conf_PongTimeout = 5;
 885                 }
 886                 return;
 887         }
 888         if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
 889                 /* Seconds between connection attempts to other servers */
 890                 Conf_ConnectRetry = atoi( Arg );
 891                 if( Conf_ConnectRetry < 5 ) {
 892                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
 893                                                                         NGIRCd_ConfFile, Line );
 894                         Conf_ConnectRetry = 5;
 895                 }
 896                 return;
 897         }
 898         if( strcasecmp( Var, "PredefChannelsOnly" ) == 0 ) {
 899                 /* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
 900                 Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
 901                 return;
 902         }
 903         if( strcasecmp( Var, "NoDNS" ) == 0 ) {
 904                 /* don't do reverse dns lookups when clients connect? */
 905                 Conf_NoDNS = Check_ArgIsTrue( Arg );
 906                 return;
 907         }
 908         if (strcasecmp(Var, "NoIdent") == 0) {
 909                 /* don't do IDENT lookups when clients connect? */
 910                 Conf_NoIdent = Check_ArgIsTrue(Arg);
 911 #ifndef IDENTAUTH
 912                 if (!Conf_NoIdent) {
 913                         /* user has enabled ident lookups explicitly, but ... */
 914                         Config_Error(LOG_WARNING,
 915                                 "%s: line %d: NoIdent=False, but ngircd was built without IDENT support",
 916                                 NGIRCd_ConfFile, Line);
 917                 }
 918 #endif
 919                 return;
 920         }
 921 #ifdef WANT_IPV6
 922         /* the default setting for all the WANT_IPV6 special options is 'true' */
 923         if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
 924                 /* connect to other hosts using ipv6, if they have an AAAA record? */
 925                 Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
 926                 return;
 927         }
 928         if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
 929                 /* connect to other hosts using ipv4.
 930                  * again, this can be used for ipv6-only setups */
 931                 Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
 932                 return;
 933         }
 934 #endif
 935         if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
 936                 /* Are IRC operators allowed to use MODE in channels they aren't Op in? */
 937                 Conf_OperCanMode = Check_ArgIsTrue( Arg );
 938                 return;
 939         }
 940         if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
 941                 /* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
 942                 Conf_OperServerMode = Check_ArgIsTrue( Arg );
 943                 return;
 944         }
 945         if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
 946                 /* Maximum number of connections. 0 -> "no limit". */
 947 #ifdef HAVE_ISDIGIT
 948                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
 949                 else
 950 #endif
 951                 Conf_MaxConnections = atol( Arg );
 952                 return;
 953         }
 954         if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
 955                 /* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
 956 #ifdef HAVE_ISDIGIT
 957                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 958                 else
 959 #endif
 960                 Conf_MaxConnectionsIP = atoi( Arg );
 961                 return;
 962         }
 963         if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
 964                 /* Maximum number of channels a user can join. 0 -> "no limit". */
 965 #ifdef HAVE_ISDIGIT
 966                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 967                 else
 968 #endif
 969                 Conf_MaxJoins = atoi( Arg );
 970                 return;
 971         }
 972         if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
 973                 /* Maximum length of a nick name; must be same on all servers
 974                  * within the IRC network! */
 975                 Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
 976                 return;
 977         }
 978
 979         if( strcasecmp( Var, "Listen" ) == 0 ) {
 980                 /* IP-Address to bind sockets */
 981                 if (Conf_ListenAddress) {
 982                         Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
 983                         return;
 984                 }
 985                 Conf_ListenAddress = strdup_warn(Arg);
 986                 /*
 987                  * if allocation fails, we're in trouble:
 988                  * we cannot ignore the error -- otherwise ngircd
 989                  * would listen on all interfaces.
 990                  */
 991                 if (!Conf_ListenAddress) {
 992                         Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 993                         exit(1);
 994                 }
 995                 return;
 996         }
 997
 998 #ifdef SSL_SUPPORT
 999         if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
1000                 ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
1001                 return;
1002         }
1003
1004         if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
1005                 assert(Conf_SSLOptions.KeyFile == NULL );
1006                 Conf_SSLOptions.KeyFile = strdup_warn(Arg);
1007                 return;
1008         }
1009         if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
1010                 assert(Conf_SSLOptions.CertFile == NULL );
1011                 Conf_SSLOptions.CertFile = strdup_warn(Arg);
1012                 return;
1013         }
1014
1015         if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
1016                 assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
1017                 if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
1018                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
1019                                                                 NGIRCd_ConfFile, Line, Var, strerror(errno));
1020                 return;
1021         }
1022         if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
1023                 assert(Conf_SSLOptions.DHFile == NULL);
1024                 Conf_SSLOptions.DHFile = strdup_warn( Arg );
1025                 return;
1026         }
1027 #endif
1028         Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
1029                                                                 NGIRCd_ConfFile, Line, Var);
1030 } /* Handle_GLOBAL */
1031
1032
1033 static void
1034 Handle_OPERATOR( int Line, char *Var, char *Arg )
1035 {
1036         unsigned int opercount;
1037         size_t len;
1038         assert( Line > 0 );
1039         assert( Var != NULL );
1040         assert( Arg != NULL );
1041         assert( Conf_Oper_Count > 0 );
1042
1043         if ( Conf_Oper_Count == 0 )
1044                 return;
1045
1046         opercount = Conf_Oper_Count - 1;
1047
1048         if( strcasecmp( Var, "Name" ) == 0 ) {
1049                 /* Name of IRC operator */
1050                 len = strlcpy( Conf_Oper[opercount].name, Arg, sizeof( Conf_Oper[opercount].name ));
1051                 if (len >= sizeof( Conf_Oper[opercount].name ))
1052                                 Config_Error_TooLong( Line, Var );
1053                 return;
1054         }
1055         if( strcasecmp( Var, "Password" ) == 0 ) {
1056                 /* Password of IRC operator */
1057                 len = strlcpy( Conf_Oper[opercount].pwd, Arg, sizeof( Conf_Oper[opercount].pwd ));
1058                 if (len >= sizeof( Conf_Oper[opercount].pwd ))
1059                                 Config_Error_TooLong( Line, Var );
1060                 return;
1061         }
1062         if( strcasecmp( Var, "Mask" ) == 0 ) {
1063                 if (Conf_Oper[opercount].mask) return; /* Hostname already configured */
1064
1065                 Conf_Oper[opercount].mask = strdup_warn( Arg );
1066                 return;
1067         }
1068         Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
1069                                                                 NGIRCd_ConfFile, Line, Var );
1070 } /* Handle_OPERATOR */
1071
1072
1073 static void
1074 Handle_SERVER( int Line, char *Var, char *Arg )
1075 {
1076         long port;
1077         size_t len;
1078
1079         assert( Line > 0 );
1080         assert( Var != NULL );
1081         assert( Arg != NULL );
1082
1083         /* Ignore server block if no space is left in server configuration structure */
1084         if( New_Server_Idx <= NONE ) return;
1085
1086         if( strcasecmp( Var, "Host" ) == 0 ) {
1087                 /* Hostname of the server */
1088                 len = strlcpy( New_Server.host, Arg, sizeof( New_Server.host ));
1089                 if (len >= sizeof( New_Server.host ))
1090                         Config_Error_TooLong ( Line, Var );
1091                 return;
1092         }
1093         if( strcasecmp( Var, "Name" ) == 0 ) {
1094                 /* Name of the server ("Nick"/"ID") */
1095                 len = strlcpy( New_Server.name, Arg, sizeof( New_Server.name ));
1096                 if (len >= sizeof( New_Server.name ))
1097                         Config_Error_TooLong( Line, Var );
1098                 return;
1099         }
1100         if (strcasecmp(Var, "Bind") == 0) {
1101                 if (ng_ipaddr_init(&New_Server.bind_addr, Arg, 0))
1102                         return;
1103
1104                 Config_Error(LOG_ERR, "%s, line %d (section \"Server\"): Can't parse IP address \"%s\"",
1105                                 NGIRCd_ConfFile, Line, Arg);
1106                 return;
1107         }
1108         if( strcasecmp( Var, "MyPassword" ) == 0 ) {
1109                 /* Password of this server which is sent to the peer */
1110                 if (*Arg == ':') {
1111                         Config_Error(LOG_ERR,
1112                                 "%s, line %d (section \"Server\"): MyPassword must not start with ':'!",
1113                                                                                 NGIRCd_ConfFile, Line);
1114                 }
1115                 len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
1116                 if (len >= sizeof( New_Server.pwd_in ))
1117                         Config_Error_TooLong( Line, Var );
1118                 return;
1119         }
1120         if( strcasecmp( Var, "PeerPassword" ) == 0 ) {
1121                 /* Passwort of the peer which must be received */
1122                 len = strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out ));
1123                 if (len >= sizeof( New_Server.pwd_out ))
1124                         Config_Error_TooLong( Line, Var );
1125                 return;
1126         }
1127         if( strcasecmp( Var, "Port" ) == 0 ) {
1128                 /* Port to which this server should connect */
1129                 port = atol( Arg );
1130                 if( port > 0 && port < 0xFFFF )
1131                         New_Server.port = (UINT16)port;
1132                 else
1133                         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
1134                                                                                 NGIRCd_ConfFile, Line, port );
1135                 return;
1136         }
1137 #ifdef SSL_SUPPORT
1138         if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
1139                 New_Server.SSLConnect = Check_ArgIsTrue(Arg);
1140                 return;
1141         }
1142 #endif
1143         if( strcasecmp( Var, "Group" ) == 0 ) {
1144                 /* Server group */
1145 #ifdef HAVE_ISDIGIT
1146                 if( ! isdigit( (int)*Arg ))
1147                         Config_Error_NaN( Line, Var );
1148                 else
1149 #endif
1150                 New_Server.group = atoi( Arg );
1151                 return;
1152         }
1153         if( strcasecmp( Var, "Passive" ) == 0 ) {
1154                 if (Check_ArgIsTrue(Arg))
1155                         New_Server.flags |= CONF_SFLAG_DISABLED;
1156                 return;
1157         }
1158         if (strcasecmp(Var, "ServiceMask") == 0) {
1159                 len = strlcpy(New_Server.svs_mask, ngt_LowerStr(Arg),
1160                               sizeof(New_Server.svs_mask));
1161                 if (len >= sizeof(New_Server.svs_mask))
1162                         Config_Error_TooLong(Line, Var);
1163                 return;
1164         }
1165
1166         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
1167                                                                 NGIRCd_ConfFile, Line, Var );
1168 } /* Handle_SERVER */
1169
1170
1171 static bool
1172 Handle_Channelname(size_t chancount, const char *name)
1173 {
1174         size_t size = sizeof( Conf_Channel[chancount].name );
1175         char *dest = Conf_Channel[chancount].name;
1176
1177         if (*name && *name != '#') {
1178                 *dest = '#';
1179                 --size;
1180                 ++dest;
1181         }
1182         return size > strlcpy(dest, name, size);
1183 }
1184
1185
1186 static void
1187 Handle_CHANNEL( int Line, char *Var, char *Arg )
1188 {
1189         size_t len;
1190         size_t chancount = 0;
1191
1192         assert( Line > 0 );
1193         assert( Var != NULL );
1194         assert( Arg != NULL );
1195         if (Conf_Channel_Count > 0)
1196                 chancount = Conf_Channel_Count - 1;
1197
1198         if( strcasecmp( Var, "Name" ) == 0 ) {
1199                 if (!Handle_Channelname(chancount, Arg))
1200                         Config_Error_TooLong( Line, Var );
1201                 return;
1202         }
1203         if( strcasecmp( Var, "Modes" ) == 0 ) {
1204                 /* Initial modes */
1205                 len = strlcpy( Conf_Channel[chancount].modes, Arg, sizeof( Conf_Channel[chancount].modes ));
1206                 if (len >= sizeof( Conf_Channel[chancount].modes ))
1207                         Config_Error_TooLong( Line, Var );
1208                 return;
1209         }
1210         if( strcasecmp( Var, "Topic" ) == 0 ) {
1211                 /* Initial topic */
1212                 if (!array_copys( &Conf_Channel[chancount].topic, Arg))
1213                         Config_Error_TooLong( Line, Var );
1214                 return;
1215         }
1216
1217         if( strcasecmp( Var, "Key" ) == 0 ) {
1218                 /* Initial Channel Key (mode k) */
1219                 len = strlcpy(Conf_Channel[chancount].key, Arg, sizeof(Conf_Channel[chancount].key));
1220                 if (len >= sizeof( Conf_Channel[chancount].key ))
1221                         Config_Error_TooLong(Line, Var);
1222                 return;
1223         }
1224
1225         if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
1226                 /* maximum user limit, mode l */
1227                 Conf_Channel[chancount].maxusers = (unsigned long) atol(Arg);
1228                 if (Conf_Channel[chancount].maxusers == 0)
1229                         Config_Error_NaN(Line, Var);
1230                 return;
1231         }
1232
1233         Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
1234                                                                 NGIRCd_ConfFile, Line, Var );
1235 } /* Handle_CHANNEL */
1236
1237
1238 static bool
1239 Validate_Config(bool Configtest, bool Rehash)
1240 {
1241         /* Validate configuration settings. */
1242
1243 #ifdef DEBUG
1244         int i, servers, servers_once;
1245 #endif
1246         bool config_valid = true;
1247         char *ptr;
1248
1249         /* Validate configured server name, see RFC 2812 section 2.3.1 */
1250         ptr = Conf_ServerName;
1251         do {
1252                 if (*ptr >= 'a' && *ptr <= 'z') continue;
1253                 if (*ptr >= 'A' && *ptr <= 'Z') continue;
1254                 if (*ptr >= '0' && *ptr <= '9') continue;
1255                 if (ptr > Conf_ServerName) {
1256                         if (*ptr == '.' || *ptr == '-')
1257                                 continue;
1258                 }
1259                 Conf_ServerName[0] = '\0';
1260                 break;
1261         } while (*(++ptr));
1262
1263         if (!Conf_ServerName[0]) {
1264                 /* No server name configured! */
1265                 config_valid = false;
1266                 Config_Error(LOG_ALERT,
1267                              "No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
1268                              NGIRCd_ConfFile);
1269                 if (!Configtest && !Rehash) {
1270                         Config_Error(LOG_ALERT,
1271                                      "%s exiting due to fatal errors!",
1272                                      PACKAGE_NAME);
1273                         exit(1);
1274                 }
1275         }
1276
1277         if (Conf_ServerName[0] && !strchr(Conf_ServerName, '.')) {
1278                 /* No dot in server name! */
1279                 config_valid = false;
1280                 Config_Error(LOG_ALERT,
1281                              "Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!",
1282                              NGIRCd_ConfFile);
1283                 if (!Configtest) {
1284                         Config_Error(LOG_ALERT,
1285                                      "%s exiting due to fatal errors!",
1286                                      PACKAGE_NAME);
1287                         exit(1);
1288                 }
1289         }
1290
1291 #ifdef STRICT_RFC
1292         if (!Conf_ServerAdminMail[0]) {
1293                 /* No administrative contact configured! */
1294                 config_valid = false;
1295                 Config_Error(LOG_ALERT,
1296                              "No administrator email address configured in \"%s\" ('AdminEMail')!",
1297                              NGIRCd_ConfFile);
1298                 if (!Configtest) {
1299                         Config_Error(LOG_ALERT,
1300                                      "%s exiting due to fatal errors!",
1301                                      PACKAGE_NAME);
1302                         exit(1);
1303                 }
1304         }
1305 #endif
1306
1307         if (!Conf_ServerAdmin1[0] && !Conf_ServerAdmin2[0]
1308             && !Conf_ServerAdminMail[0]) {
1309                 /* No administrative information configured! */
1310                 Config_Error(LOG_WARNING,
1311                              "No administrative information configured but required by RFC!");
1312         }
1313
1314 #ifdef DEBUG
1315         servers = servers_once = 0;
1316         for (i = 0; i < MAX_SERVERS; i++) {
1317                 if (Conf_Server[i].name[0]) {
1318                         servers++;
1319                         if (Conf_Server[i].flags & CONF_SFLAG_ONCE)
1320                                 servers_once++;
1321                 }
1322         }
1323         Log(LOG_DEBUG,
1324             "Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
1325             Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
1326 #endif
1327
1328         return config_valid;
1329 } /* Validate_Config */
1330
1331
1332 static void
1333 Config_Error_TooLong ( const int Line, const char *Item )
1334 {
1335         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
1336 }
1337
1338
1339 static void
1340 Config_Error_NaN( const int Line, const char *Item )
1341 {
1342         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
1343                                                 NGIRCd_ConfFile, Line, Item );
1344 }
1345
1346
1347 #ifdef PROTOTYPES
1348 static void Config_Error( const int Level, const char *Format, ... )
1349 #else
1350 static void Config_Error( Level, Format, va_alist )
1351 const int Level;
1352 const char *Format;
1353 va_dcl
1354 #endif
1355 {
1356         /* Error! Write to console and/or logfile. */
1357
1358         char msg[MAX_LOG_MSG_LEN];
1359         va_list ap;
1360
1361         assert( Format != NULL );
1362
1363 #ifdef PROTOTYPES
1364         va_start( ap, Format );
1365 #else
1366         va_start( ap );
1367 #endif
1368         vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
1369         va_end( ap );
1370
1371         /* During "normal operations" the log functions of the daemon should
1372          * be used, but during testing of the configuration file, all messages
1373          * should go directly to the console: */
1374         if (Use_Log) Log( Level, "%s", msg );
1375         else puts( msg );
1376 } /* Config_Error */
1377
1378
1379 static void
1380 Init_Server_Struct( CONF_SERVER *Server )
1381 {
1382         /* Initialize server configuration structur to default values */
1383
1384         assert( Server != NULL );
1385
1386         memset( Server, 0, sizeof (CONF_SERVER) );
1387
1388         Server->group = NONE;
1389         Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
1390
1391         if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
1392
1393         Resolve_Init(&Server->res_stat);
1394         Server->conn_id = NONE;
1395         memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
1396 } /* Init_Server_Struct */
1397
1398
1399 /* -eof- */