src/ngircd/conf.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2008 Alexander Barton (alex@barton.de)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  *
  11  * 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 static size_t Conf_Channel_Count;
  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         bool config_valid;
 210         size_t predef_channel_count;
 211         struct Conf_Channel *predef_chan;
 212
 213         Use_Log = false;
 214
 215         if (! Read_Config(true))
 216                 return 1;
 217
 218         config_valid = Validate_Config(true, false);
 219
 220         /* If stdin and stdout ("you can read our nice message and we can
 221          * read in your keypress") are valid tty's, wait for a key: */
 222         if( isatty( fileno( stdin )) && isatty( fileno( stdout ))) {
 223                 puts( "OK, press enter to see a dump of your service configuration ..." );
 224                 getchar( );
 225         } else {
 226                 puts( "Ok, dump of your server configuration follows:\n" );
 227         }
 228
 229         puts( "[GLOBAL]" );
 230         printf( "  Name = %s\n", Conf_ServerName );
 231         printf( "  Info = %s\n", Conf_ServerInfo );
 232         printf( "  Password = %s\n", Conf_ServerPwd );
 233         printf( "  AdminInfo1 = %s\n", Conf_ServerAdmin1 );
 234         printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
 235         printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
 236         printf( "  MotdFile = %s\n", Conf_MotdFile );
 237         printf( "  MotdPhrase = %s\n", Conf_MotdPhrase );
 238         printf( "  ChrootDir = %s\n", Conf_Chroot );
 239         printf( "  PidFile = %s\n", Conf_PidFile);
 240         printf("  Listen = %s\n", Conf_ListenAddress);
 241         fputs("  Ports = ", stdout);
 242
 243         ports_puts(&Conf_ListenPorts);
 244 #ifdef SSL_SUPPORT
 245         fputs("  SSLPorts = ", stdout);
 246         ports_puts(&Conf_SSLOptions.ListenPorts);
 247         ConfSSL_Puts();
 248 #endif
 249
 250         pwd = getpwuid( Conf_UID );
 251         if( pwd ) printf( "  ServerUID = %s\n", pwd->pw_name );
 252         else printf( "  ServerUID = %ld\n", (long)Conf_UID );
 253         grp = getgrgid( Conf_GID );
 254         if( grp ) printf( "  ServerGID = %s\n", grp->gr_name );
 255         else printf( "  ServerGID = %ld\n", (long)Conf_GID );
 256         printf( "  PingTimeout = %d\n", Conf_PingTimeout );
 257         printf( "  PongTimeout = %d\n", Conf_PongTimeout );
 258         printf( "  ConnectRetry = %d\n", Conf_ConnectRetry );
 259         printf( "  OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
 260         printf( "  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
 261         printf( "  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
 262         printf( "  NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
 263         printf( "  NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
 264
 265 #ifdef WANT_IPV6
 266         printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
 267         printf("  ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
 268 #endif
 269         printf( "  MaxConnections = %ld\n", Conf_MaxConnections);
 270         printf( "  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
 271         printf( "  MaxJoins = %d\n", Conf_MaxJoins>0 ? Conf_MaxJoins : -1);
 272         printf( "  MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
 273
 274         for( i = 0; i < Conf_Oper_Count; i++ ) {
 275                 if( ! Conf_Oper[i].name[0] ) continue;
 276
 277                 /* Valid "Operator" section */
 278                 puts( "[OPERATOR]" );
 279                 printf( "  Name = %s\n", Conf_Oper[i].name );
 280                 printf( "  Password = %s\n", Conf_Oper[i].pwd );
 281                 if ( Conf_Oper[i].mask ) printf( "  Mask = %s\n", Conf_Oper[i].mask );
 282                 puts( "" );
 283         }
 284
 285         for( i = 0; i < MAX_SERVERS; i++ ) {
 286                 if( ! Conf_Server[i].name[0] ) continue;
 287
 288                 /* Valid "Server" section */
 289                 puts( "[SERVER]" );
 290                 printf( "  Name = %s\n", Conf_Server[i].name );
 291                 printf( "  Host = %s\n", Conf_Server[i].host );
 292                 printf( "  Port = %u\n", (unsigned int)Conf_Server[i].port );
 293 #ifdef SSL_SUPPORT
 294                 printf( "  SSLConnect = %s\n", Conf_Server[i].SSLConnect?"yes":"no");
 295 #endif
 296                 printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
 297                 printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
 298                 printf( "  ServiceMask = %s\n", Conf_Server[i].svs_mask);
 299                 printf( "  Group = %d\n", Conf_Server[i].group );
 300                 printf( "  Passive = %s\n\n", Conf_Server[i].flags & CONF_SFLAG_DISABLED ? "yes" : "no");
 301         }
 302
 303         predef_channel_count = array_length(&Conf_Channels, sizeof(*predef_chan));
 304         predef_chan = array_start(&Conf_Channels);
 305
 306         for (i = 0; i < predef_channel_count; i++, predef_chan++) {
 307                 if (!predef_chan->name[0])
 308                         continue;
 309
 310                 /* Valid "Channel" section */
 311                 puts( "[CHANNEL]" );
 312                 printf("  Name = %s\n", predef_chan->name);
 313                 printf("  Modes = %s\n", predef_chan->modes);
 314                 printf("  Key = %s\n", predef_chan->key);
 315                 printf("  MaxUsers = %lu\n", predef_chan->maxusers);
 316                 printf("  Topic = %s\n\n", predef_chan->topic);
 317         }
 318
 319         return (config_valid ? 0 : 1);
 320 } /* Conf_Test */
 321
 322
 323 GLOBAL void
 324 Conf_UnsetServer( CONN_ID Idx )
 325 {
 326         /* Set next time for next connection attempt, if this is a server
 327          * link that is (still) configured here. If the server is set as
 328          * "once", delete it from our configuration.
 329          * Non-Server-Connections will be silently ignored. */
 330
 331         int i;
 332         time_t t;
 333
 334         /* Check all our configured servers */
 335         for( i = 0; i < MAX_SERVERS; i++ ) {
 336                 if( Conf_Server[i].conn_id != Idx ) continue;
 337
 338                 /* Gotcha! Mark server configuration as "unused": */
 339                 Conf_Server[i].conn_id = NONE;
 340
 341                 if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 342                         /* Delete configuration here */
 343                         Init_Server_Struct( &Conf_Server[i] );
 344                 } else {
 345                         /* Set time for next connect attempt */
 346                         t = time(NULL);
 347                         if (Conf_Server[i].lasttry < t - Conf_ConnectRetry) {
 348                                 /* The connection has been "long", so we don't
 349                                  * require the next attempt to be delayed. */
 350                                 Conf_Server[i].lasttry =
 351                                         t - Conf_ConnectRetry + RECONNECT_DELAY;
 352                         } else
 353                                 Conf_Server[i].lasttry = t;
 354                 }
 355         }
 356 } /* Conf_UnsetServer */
 357
 358
 359 GLOBAL void
 360 Conf_SetServer( int ConfServer, CONN_ID Idx )
 361 {
 362         /* Set connection for specified configured server */
 363
 364         assert( ConfServer > NONE );
 365         assert( Idx > NONE );
 366
 367         Conf_Server[ConfServer].conn_id = Idx;
 368 } /* Conf_SetServer */
 369
 370
 371 GLOBAL int
 372 Conf_GetServer( CONN_ID Idx )
 373 {
 374         /* Get index of server in configuration structure */
 375
 376         int i = 0;
 377
 378         assert( Idx > NONE );
 379
 380         for( i = 0; i < MAX_SERVERS; i++ ) {
 381                 if( Conf_Server[i].conn_id == Idx ) return i;
 382         }
 383         return NONE;
 384 } /* Conf_GetServer */
 385
 386
 387 GLOBAL bool
 388 Conf_EnableServer( char *Name, UINT16 Port )
 389 {
 390         /* Enable specified server and adjust port */
 391
 392         int i;
 393
 394         assert( Name != NULL );
 395
 396         for( i = 0; i < MAX_SERVERS; i++ ) {
 397                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 398                         /* Gotcha! Set port and enable server: */
 399                         Conf_Server[i].port = Port;
 400                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 401                         return true;
 402                 }
 403         }
 404         return false;
 405 } /* Conf_EnableServer */
 406
 407
 408 GLOBAL bool
 409 Conf_EnablePassiveServer(const char *Name)
 410 {
 411         /* Enable specified server */
 412         int i;
 413
 414         assert( Name != NULL );
 415         for (i = 0; i < MAX_SERVERS; i++) {
 416                 if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
 417                         /* BINGO! Enable server */
 418                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 419                         return true;
 420                 }
 421         }
 422         return false;
 423 } /* Conf_EnablePassiveServer */
 424
 425
 426 GLOBAL bool
 427 Conf_DisableServer( char *Name )
 428 {
 429         /* Enable specified server and adjust port */
 430
 431         int i;
 432
 433         assert( Name != NULL );
 434
 435         for( i = 0; i < MAX_SERVERS; i++ ) {
 436                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 437                         /* Gotcha! Disable and disconnect server: */
 438                         Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
 439                         if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
 440                         return true;
 441                 }
 442         }
 443         return false;
 444 } /* Conf_DisableServer */
 445
 446
 447 GLOBAL bool
 448 Conf_AddServer( char *Name, UINT16 Port, char *Host, char *MyPwd, char *PeerPwd )
 449 {
 450         /* Add new server to configuration */
 451
 452         int i;
 453
 454         assert( Name != NULL );
 455         assert( Host != NULL );
 456         assert( MyPwd != NULL );
 457         assert( PeerPwd != NULL );
 458
 459         /* Search unused item in server configuration structure */
 460         for( i = 0; i < MAX_SERVERS; i++ ) {
 461                 /* Is this item used? */
 462                 if( ! Conf_Server[i].name[0] ) break;
 463         }
 464         if( i >= MAX_SERVERS ) return false;
 465
 466         Init_Server_Struct( &Conf_Server[i] );
 467         strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
 468         strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
 469         strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
 470         strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
 471         Conf_Server[i].port = Port;
 472         Conf_Server[i].flags = CONF_SFLAG_ONCE;
 473
 474         return true;
 475 } /* Conf_AddServer */
 476
 477
 478 /**
 479  * Check if the given nick name is an service
 480  */
 481 GLOBAL bool
 482 Conf_IsService(int ConfServer, char *Nick)
 483 {
 484         return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
 485 } /* Conf_IsService */
 486
 487
 488 static void
 489 Set_Defaults( bool InitServers )
 490 {
 491         /* Initialize configuration variables with default values. */
 492
 493         int i;
 494
 495         strcpy( Conf_ServerName, "" );
 496         snprintf( Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s", PACKAGE_NAME, PACKAGE_VERSION );
 497         strcpy( Conf_ServerPwd, "" );
 498
 499         strcpy( Conf_ServerAdmin1, "" );
 500         strcpy( Conf_ServerAdmin2, "" );
 501         strcpy( Conf_ServerAdminMail, "" );
 502
 503         strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
 504         strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
 505
 506         strlcpy( Conf_MotdPhrase, MOTD_PHRASE, sizeof( Conf_MotdPhrase ));
 507
 508         strlcpy( Conf_Chroot, CHROOT_DIR, sizeof( Conf_Chroot ));
 509
 510         strlcpy( Conf_PidFile, PID_FILE, sizeof( Conf_PidFile ));
 511
 512         free(Conf_ListenAddress);
 513         Conf_ListenAddress = NULL;
 514         Conf_UID = Conf_GID = 0;
 515
 516         Conf_PingTimeout = 120;
 517         Conf_PongTimeout = 20;
 518
 519         Conf_ConnectRetry = 60;
 520
 521         Conf_Oper_Count = 0;
 522         Conf_Channel_Count = 0;
 523
 524         Conf_OperCanMode = false;
 525         Conf_NoDNS = false;
 526         Conf_NoIdent = false;
 527         Conf_PredefChannelsOnly = false;
 528         Conf_OperServerMode = false;
 529
 530         Conf_ConnectIPv4 = true;
 531         Conf_ConnectIPv6 = true;
 532
 533         Conf_MaxConnections = 0;
 534         Conf_MaxConnectionsIP = 5;
 535         Conf_MaxJoins = 10;
 536         Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
 537
 538         /* Initialize server configuration structures */
 539         if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
 540 } /* Set_Defaults */
 541
 542
 543 static bool
 544 Read_Config( bool ngircd_starting )
 545 {
 546         /* Read configuration file. */
 547
 548         char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
 549         const UINT16 defaultport = 6667;
 550         int line, i, n;
 551         FILE *fd;
 552
 553         /* Open configuration file */
 554         fd = fopen( NGIRCd_ConfFile, "r" );
 555         if( ! fd ) {
 556                 /* No configuration file found! */
 557                 Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
 558                                         NGIRCd_ConfFile, strerror( errno ));
 559                 if (!ngircd_starting)
 560                         return false;
 561                 Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 562                 exit( 1 );
 563         }
 564
 565         Set_Defaults( ngircd_starting );
 566
 567         Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
 568
 569         /* Clean up server configuration structure: mark all already
 570          * configured servers as "once" so that they are deleted
 571          * after the next disconnect and delete all unused servers.
 572          * And delete all servers which are "duplicates" of servers
 573          * that are already marked as "once" (such servers have been
 574          * created by the last rehash but are now useless). */
 575         for( i = 0; i < MAX_SERVERS; i++ ) {
 576                 if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
 577                 else {
 578                         /* This structure is in use ... */
 579                         if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 580                                 /* Check for duplicates */
 581                                 for( n = 0; n < MAX_SERVERS; n++ ) {
 582                                         if( n == i ) continue;
 583
 584                                         if( Conf_Server[i].conn_id == Conf_Server[n].conn_id ) {
 585                                                 Init_Server_Struct( &Conf_Server[n] );
 586 #ifdef DEBUG
 587                                                 Log(LOG_DEBUG,"Deleted unused duplicate server %d (kept %d).",
 588                                                                                                 n, i );
 589 #endif
 590                                         }
 591                                 }
 592                         } else {
 593                                 /* Mark server as "once" */
 594                                 Conf_Server[i].flags |= CONF_SFLAG_ONCE;
 595                                 Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
 596                         }
 597                 }
 598         }
 599
 600         /* Initialize variables */
 601         line = 0;
 602         strcpy( section, "" );
 603         Init_Server_Struct( &New_Server );
 604         New_Server_Idx = NONE;
 605 #ifdef SSL_SUPPORT
 606         ConfSSL_Init();
 607 #endif
 608         /* Read configuration file */
 609         while( true ) {
 610                 if( ! fgets( str, LINE_LEN, fd )) break;
 611                 ngt_TrimStr( str );
 612                 line++;
 613
 614                 /* Skip comments and empty lines */
 615                 if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
 616
 617                 /* Is this the beginning of a new section? */
 618                 if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
 619                         strlcpy( section, str, sizeof( section ));
 620                         if( strcasecmp( section, "[GLOBAL]" ) == 0 )
 621                                 continue;
 622
 623                         if( strcasecmp( section, "[OPERATOR]" ) == 0 ) {
 624                                 if( Conf_Oper_Count + 1 > MAX_OPERATORS )
 625                                         Config_Error( LOG_ERR, "Too many operators configured.");
 626                                 else {
 627                                         /* Initialize new operator structure */
 628                                         Conf_Oper[Conf_Oper_Count].name[0] = '\0';
 629                                         Conf_Oper[Conf_Oper_Count].pwd[0] = '\0';
 630                                         if (Conf_Oper[Conf_Oper_Count].mask) {
 631                                                 free(Conf_Oper[Conf_Oper_Count].mask );
 632                                                 Conf_Oper[Conf_Oper_Count].mask = NULL;
 633                                         }
 634                                         Conf_Oper_Count++;
 635                                 }
 636                                 continue;
 637                         }
 638                         if( strcasecmp( section, "[SERVER]" ) == 0 ) {
 639                                 /* Check if there is already a server to add */
 640                                 if( New_Server.name[0] ) {
 641                                         /* Copy data to "real" server structure */
 642                                         assert( New_Server_Idx > NONE );
 643                                         Conf_Server[New_Server_Idx] = New_Server;
 644                                 }
 645
 646                                 /* Re-init structure for new server */
 647                                 Init_Server_Struct( &New_Server );
 648
 649                                 /* Search unused item in server configuration structure */
 650                                 for( i = 0; i < MAX_SERVERS; i++ ) {
 651                                         /* Is this item used? */
 652                                         if( ! Conf_Server[i].name[0] ) break;
 653                                 }
 654                                 if( i >= MAX_SERVERS ) {
 655                                         /* Oops, no free item found! */
 656                                         Config_Error( LOG_ERR, "Too many servers configured." );
 657                                         New_Server_Idx = NONE;
 658                                 }
 659                                 else New_Server_Idx = i;
 660                                 continue;
 661                         }
 662                         if (strcasecmp(section, "[CHANNEL]") == 0) {
 663                                 Conf_Channel_Count++;
 664                                 continue;
 665                         }
 666
 667                         Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
 668                         section[0] = 0x1;
 669                 }
 670                 if( section[0] == 0x1 ) continue;
 671
 672                 /* Split line into variable name and parameters */
 673                 ptr = strchr( str, '=' );
 674                 if( ! ptr ) {
 675                         Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
 676                         continue;
 677                 }
 678                 *ptr = '\0';
 679                 var = str; ngt_TrimStr( var );
 680                 arg = ptr + 1; ngt_TrimStr( arg );
 681
 682                 if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
 683                 else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
 684                 else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
 685                 else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
 686                 else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
 687         }
 688
 689         /* Close configuration file */
 690         fclose( fd );
 691
 692         /* Check if there is still a server to add */
 693         if( New_Server.name[0] ) {
 694                 /* Copy data to "real" server structure */
 695                 assert( New_Server_Idx > NONE );
 696                 Conf_Server[New_Server_Idx] = New_Server;
 697         }
 698
 699         if (0 == array_length(&Conf_ListenPorts, sizeof(UINT16))) {
 700                 if (!array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport)) {
 701                         Config_Error( LOG_ALERT, "Could not add default listening Port %u: %s",
 702                                                         (unsigned int) defaultport, strerror(errno));
 703                         exit( 1 );
 704                 }
 705         }
 706
 707         if (!Conf_ListenAddress)
 708                 Conf_ListenAddress = strdup_warn(DEFAULT_LISTEN_ADDRSTR);
 709
 710         if (!Conf_ListenAddress) {
 711                 Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 712                 exit(1);
 713         }
 714         return true;
 715 } /* Read_Config */
 716
 717
 718 static bool
 719 Check_ArgIsTrue( const char *Arg )
 720 {
 721         if( strcasecmp( Arg, "yes" ) == 0 ) return true;
 722         if( strcasecmp( Arg, "true" ) == 0 ) return true;
 723         if( atoi( Arg ) != 0 ) return true;
 724
 725         return false;
 726 } /* Check_ArgIsTrue */
 727
 728
 729 static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
 730 {
 731         unsigned new;
 732
 733         new = (unsigned) atoi(Arg) + 1;
 734         if (new > CLIENT_NICK_LEN) {
 735                 Config_Error(LOG_WARNING,
 736                              "%s, line %d: Value of \"MaxNickLength\" exceeds %u!",
 737                              NGIRCd_ConfFile, Line, CLIENT_NICK_LEN - 1);
 738                 return CLIENT_NICK_LEN;
 739         }
 740         if (new < 2) {
 741                 Config_Error(LOG_WARNING,
 742                              "%s, line %d: Value of \"MaxNickLength\" must be at least 1!",
 743                              NGIRCd_ConfFile, Line);
 744                 return 2;
 745         }
 746         return new;
 747 } /* Handle_MaxNickLength */
 748
 749
 750 static void
 751 Handle_GLOBAL( int Line, char *Var, char *Arg )
 752 {
 753         struct passwd *pwd;
 754         struct group *grp;
 755         size_t len;
 756
 757         assert( Line > 0 );
 758         assert( Var != NULL );
 759         assert( Arg != NULL );
 760
 761         if( strcasecmp( Var, "Name" ) == 0 ) {
 762                 /* Server name */
 763                 len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
 764                 if (len >= sizeof( Conf_ServerName ))
 765                         Config_Error_TooLong( Line, Var );
 766                 return;
 767         }
 768         if( strcasecmp( Var, "Info" ) == 0 ) {
 769                 /* Info text of server */
 770                 len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
 771                 if (len >= sizeof( Conf_ServerInfo ))
 772                         Config_Error_TooLong ( Line, Var );
 773                 return;
 774         }
 775         if( strcasecmp( Var, "Password" ) == 0 ) {
 776                 /* Global server password */
 777                 len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
 778                 if (len >= sizeof( Conf_ServerPwd ))
 779                         Config_Error_TooLong( Line, Var );
 780                 return;
 781         }
 782         if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
 783                 /* Administrative info #1 */
 784                 len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
 785                 if (len >= sizeof( Conf_ServerAdmin1 ))
 786                         Config_Error_TooLong ( Line, Var );
 787                 return;
 788         }
 789         if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
 790                 /* Administrative info #2 */
 791                 len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
 792                 if (len >= sizeof( Conf_ServerAdmin2 ))
 793                         Config_Error_TooLong ( Line, Var );
 794                 return;
 795         }
 796         if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
 797                 /* Administrative email contact */
 798                 len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
 799                 if (len >= sizeof( Conf_ServerAdminMail ))
 800                         Config_Error_TooLong( Line, Var );
 801                 return;
 802         }
 803
 804         if( strcasecmp( Var, "Ports" ) == 0 ) {
 805                 ports_parse(&Conf_ListenPorts, Line, Arg);
 806                 return;
 807         }
 808         if( strcasecmp( Var, "MotdFile" ) == 0 ) {
 809                 /* "Message of the day" (MOTD) file */
 810                 len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
 811                 if (len >= sizeof( Conf_MotdFile ))
 812                         Config_Error_TooLong( Line, Var );
 813                 return;
 814         }
 815         if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
 816                 /* "Message of the day" phrase (instead of file) */
 817                 len = strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase ));
 818                 if (len >= sizeof( Conf_MotdPhrase ))
 819                         Config_Error_TooLong( Line, Var );
 820                 return;
 821         }
 822         if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
 823                 /* directory for chroot() */
 824                 len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
 825                 if (len >= sizeof( Conf_Chroot ))
 826                         Config_Error_TooLong( Line, Var );
 827                 return;
 828         }
 829         if ( strcasecmp( Var, "PidFile" ) == 0 ) {
 830                 /* name of pidfile */
 831                 len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
 832                 if (len >= sizeof( Conf_PidFile ))
 833                         Config_Error_TooLong( Line, Var );
 834                 return;
 835         }
 836         if( strcasecmp( Var, "ServerUID" ) == 0 ) {
 837                 /* UID the daemon should switch to */
 838                 pwd = getpwnam( Arg );
 839                 if( pwd ) Conf_UID = pwd->pw_uid;
 840                 else {
 841 #ifdef HAVE_ISDIGIT
 842                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 843                         else
 844 #endif
 845                         Conf_UID = (unsigned int)atoi( Arg );
 846                 }
 847                 return;
 848         }
 849         if( strcasecmp( Var, "ServerGID" ) == 0 ) {
 850                 /* GID the daemon should use */
 851                 grp = getgrnam( Arg );
 852                 if( grp ) Conf_GID = grp->gr_gid;
 853                 else {
 854 #ifdef HAVE_ISDIGIT
 855                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 856                         else
 857 #endif
 858                         Conf_GID = (unsigned int)atoi( Arg );
 859                 }
 860                 return;
 861         }
 862         if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
 863                 /* PING timeout */
 864                 Conf_PingTimeout = atoi( Arg );
 865                 if( Conf_PingTimeout < 5 ) {
 866                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
 867                                                                         NGIRCd_ConfFile, Line );
 868                         Conf_PingTimeout = 5;
 869                 }
 870                 return;
 871         }
 872         if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
 873                 /* PONG timeout */
 874                 Conf_PongTimeout = atoi( Arg );
 875                 if( Conf_PongTimeout < 5 ) {
 876                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
 877                                                                         NGIRCd_ConfFile, Line );
 878                         Conf_PongTimeout = 5;
 879                 }
 880                 return;
 881         }
 882         if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
 883                 /* Seconds between connection attempts to other servers */
 884                 Conf_ConnectRetry = atoi( Arg );
 885                 if( Conf_ConnectRetry < 5 ) {
 886                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
 887                                                                         NGIRCd_ConfFile, Line );
 888                         Conf_ConnectRetry = 5;
 889                 }
 890                 return;
 891         }
 892         if( strcasecmp( Var, "PredefChannelsOnly" ) == 0 ) {
 893                 /* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
 894                 Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
 895                 return;
 896         }
 897         if( strcasecmp( Var, "NoDNS" ) == 0 ) {
 898                 /* don't do reverse dns lookups when clients connect? */
 899                 Conf_NoDNS = Check_ArgIsTrue( Arg );
 900                 return;
 901         }
 902         if (strcasecmp(Var, "NoIdent") == 0) {
 903                 /* don't do IDENT lookups when clients connect? */
 904                 Conf_NoIdent = Check_ArgIsTrue(Arg);
 905 #ifndef IDENTAUTH
 906                 if (!Conf_NoIdent) {
 907                         /* user has enabled ident lookups explicitly, but ... */
 908                         Config_Error(LOG_WARNING,
 909                                 "%s: line %d: NoIdent=False, but ngircd was built without IDENT support",
 910                                 NGIRCd_ConfFile, Line);
 911                 }
 912 #endif
 913                 return;
 914         }
 915 #ifdef WANT_IPV6
 916         /* the default setting for all the WANT_IPV6 special options is 'true' */
 917         if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
 918                 /* connect to other hosts using ipv6, if they have an AAAA record? */
 919                 Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
 920                 return;
 921         }
 922         if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
 923                 /* connect to other hosts using ipv4.
 924                  * again, this can be used for ipv6-only setups */
 925                 Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
 926                 return;
 927         }
 928 #endif
 929         if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
 930                 /* Are IRC operators allowed to use MODE in channels they aren't Op in? */
 931                 Conf_OperCanMode = Check_ArgIsTrue( Arg );
 932                 return;
 933         }
 934         if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
 935                 /* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
 936                 Conf_OperServerMode = Check_ArgIsTrue( Arg );
 937                 return;
 938         }
 939         if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
 940                 /* Maximum number of connections. 0 -> "no limit". */
 941 #ifdef HAVE_ISDIGIT
 942                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
 943                 else
 944 #endif
 945                 Conf_MaxConnections = atol( Arg );
 946                 return;
 947         }
 948         if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
 949                 /* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
 950 #ifdef HAVE_ISDIGIT
 951                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 952                 else
 953 #endif
 954                 Conf_MaxConnectionsIP = atoi( Arg );
 955                 return;
 956         }
 957         if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
 958                 /* Maximum number of channels a user can join. 0 -> "no limit". */
 959 #ifdef HAVE_ISDIGIT
 960                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 961                 else
 962 #endif
 963                 Conf_MaxJoins = atoi( Arg );
 964                 return;
 965         }
 966         if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
 967                 /* Maximum length of a nick name; must be same on all servers
 968                  * within the IRC network! */
 969                 Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
 970                 return;
 971         }
 972
 973         if( strcasecmp( Var, "Listen" ) == 0 ) {
 974                 /* IP-Address to bind sockets */
 975                 if (Conf_ListenAddress) {
 976                         Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
 977                         return;
 978                 }
 979                 Conf_ListenAddress = strdup_warn(Arg);
 980                 /*
 981                  * if allocation fails, we're in trouble:
 982                  * we cannot ignore the error -- otherwise ngircd
 983                  * would listen on all interfaces.
 984                  */
 985                 if (!Conf_ListenAddress) {
 986                         Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 987                         exit(1);
 988                 }
 989                 return;
 990         }
 991
 992 #ifdef SSL_SUPPORT
 993         if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
 994                 ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
 995                 return;
 996         }
 997
 998         if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
 999                 assert(Conf_SSLOptions.KeyFile == NULL );
1000                 Conf_SSLOptions.KeyFile = strdup_warn(Arg);
1001                 return;
1002         }
1003         if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
1004                 assert(Conf_SSLOptions.CertFile == NULL );
1005                 Conf_SSLOptions.CertFile = strdup_warn(Arg);
1006                 return;
1007         }
1008
1009         if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
1010                 assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
1011                 if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
1012                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
1013                                                                 NGIRCd_ConfFile, Line, Var, strerror(errno));
1014                 return;
1015         }
1016         if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
1017                 assert(Conf_SSLOptions.DHFile == NULL);
1018                 Conf_SSLOptions.DHFile = strdup_warn( Arg );
1019                 return;
1020         }
1021 #endif
1022         Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
1023                                                                 NGIRCd_ConfFile, Line, Var);
1024 } /* Handle_GLOBAL */
1025
1026
1027 static void
1028 Handle_OPERATOR( int Line, char *Var, char *Arg )
1029 {
1030         unsigned int opercount;
1031         size_t len;
1032         assert( Line > 0 );
1033         assert( Var != NULL );
1034         assert( Arg != NULL );
1035         assert( Conf_Oper_Count > 0 );
1036
1037         if ( Conf_Oper_Count == 0 )
1038                 return;
1039
1040         opercount = Conf_Oper_Count - 1;
1041
1042         if( strcasecmp( Var, "Name" ) == 0 ) {
1043                 /* Name of IRC operator */
1044                 len = strlcpy( Conf_Oper[opercount].name, Arg, sizeof( Conf_Oper[opercount].name ));
1045                 if (len >= sizeof( Conf_Oper[opercount].name ))
1046                                 Config_Error_TooLong( Line, Var );
1047                 return;
1048         }
1049         if( strcasecmp( Var, "Password" ) == 0 ) {
1050                 /* Password of IRC operator */
1051                 len = strlcpy( Conf_Oper[opercount].pwd, Arg, sizeof( Conf_Oper[opercount].pwd ));
1052                 if (len >= sizeof( Conf_Oper[opercount].pwd ))
1053                                 Config_Error_TooLong( Line, Var );
1054                 return;
1055         }
1056         if( strcasecmp( Var, "Mask" ) == 0 ) {
1057                 if (Conf_Oper[opercount].mask) return; /* Hostname already configured */
1058
1059                 Conf_Oper[opercount].mask = strdup_warn( Arg );
1060                 return;
1061         }
1062         Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
1063                                                                 NGIRCd_ConfFile, Line, Var );
1064 } /* Handle_OPERATOR */
1065
1066
1067 static void
1068 Handle_SERVER( int Line, char *Var, char *Arg )
1069 {
1070         long port;
1071         size_t len;
1072
1073         assert( Line > 0 );
1074         assert( Var != NULL );
1075         assert( Arg != NULL );
1076
1077         /* Ignore server block if no space is left in server configuration structure */
1078         if( New_Server_Idx <= NONE ) return;
1079
1080         if( strcasecmp( Var, "Host" ) == 0 ) {
1081                 /* Hostname of the server */
1082                 len = strlcpy( New_Server.host, Arg, sizeof( New_Server.host ));
1083                 if (len >= sizeof( New_Server.host ))
1084                         Config_Error_TooLong ( Line, Var );
1085                 return;
1086         }
1087         if( strcasecmp( Var, "Name" ) == 0 ) {
1088                 /* Name of the server ("Nick"/"ID") */
1089                 len = strlcpy( New_Server.name, Arg, sizeof( New_Server.name ));
1090                 if (len >= sizeof( New_Server.name ))
1091                         Config_Error_TooLong( Line, Var );
1092                 return;
1093         }
1094         if (strcasecmp(Var, "Bind") == 0) {
1095                 if (ng_ipaddr_init(&New_Server.bind_addr, Arg, 0))
1096                         return;
1097
1098                 Config_Error(LOG_ERR, "%s, line %d (section \"Server\"): Can't parse IP address \"%s\"",
1099                                 NGIRCd_ConfFile, Line, Arg);
1100                 return;
1101         }
1102         if( strcasecmp( Var, "MyPassword" ) == 0 ) {
1103                 /* Password of this server which is sent to the peer */
1104                 if (*Arg == ':') {
1105                         Config_Error(LOG_ERR,
1106                                 "%s, line %d (section \"Server\"): MyPassword must not start with ':'!",
1107                                                                                 NGIRCd_ConfFile, Line);
1108                 }
1109                 len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
1110                 if (len >= sizeof( New_Server.pwd_in ))
1111                         Config_Error_TooLong( Line, Var );
1112                 return;
1113         }
1114         if( strcasecmp( Var, "PeerPassword" ) == 0 ) {
1115                 /* Passwort of the peer which must be received */
1116                 len = strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out ));
1117                 if (len >= sizeof( New_Server.pwd_out ))
1118                         Config_Error_TooLong( Line, Var );
1119                 return;
1120         }
1121         if( strcasecmp( Var, "Port" ) == 0 ) {
1122                 /* Port to which this server should connect */
1123                 port = atol( Arg );
1124                 if( port > 0 && port < 0xFFFF )
1125                         New_Server.port = (UINT16)port;
1126                 else
1127                         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
1128                                                                                 NGIRCd_ConfFile, Line, port );
1129                 return;
1130         }
1131 #ifdef SSL_SUPPORT
1132         if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
1133                 New_Server.SSLConnect = Check_ArgIsTrue(Arg);
1134                 return;
1135         }
1136 #endif
1137         if( strcasecmp( Var, "Group" ) == 0 ) {
1138                 /* Server group */
1139 #ifdef HAVE_ISDIGIT
1140                 if( ! isdigit( (int)*Arg ))
1141                         Config_Error_NaN( Line, Var );
1142                 else
1143 #endif
1144                 New_Server.group = atoi( Arg );
1145                 return;
1146         }
1147         if( strcasecmp( Var, "Passive" ) == 0 ) {
1148                 if (Check_ArgIsTrue(Arg))
1149                         New_Server.flags |= CONF_SFLAG_DISABLED;
1150                 return;
1151         }
1152         if (strcasecmp(Var, "ServiceMask") == 0) {
1153                 len = strlcpy(New_Server.svs_mask, ngt_LowerStr(Arg),
1154                               sizeof(New_Server.svs_mask));
1155                 if (len >= sizeof(New_Server.svs_mask))
1156                         Config_Error_TooLong(Line, Var);
1157                 return;
1158         }
1159
1160         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
1161                                                                 NGIRCd_ConfFile, Line, Var );
1162 } /* Handle_SERVER */
1163
1164
1165 static bool
1166 Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
1167 {
1168         size_t size = sizeof(new_chan->name);
1169         char *dest = new_chan->name;
1170
1171         /* Channels names must begin with "&" or "#", if it is
1172          * missing, add a '#'. This is only here for user convenience.
1173          */
1174         if (*name && *name != '#' && *name != '&') {
1175                 *dest = '#';
1176                 --size;
1177                 ++dest;
1178         }
1179         return size > strlcpy(dest, name, size);
1180 }
1181
1182
1183 static void
1184 Handle_CHANNEL(int Line, char *Var, char *Arg)
1185 {
1186         size_t len;
1187         size_t chancount;
1188         struct Conf_Channel *chan;
1189
1190         assert( Line > 0 );
1191         assert( Var != NULL );
1192         assert( Arg != NULL );
1193         assert(Conf_Channel_Count > 0);
1194
1195         chancount = Conf_Channel_Count - 1;
1196
1197         chan = array_alloc(&Conf_Channels, sizeof(*chan), chancount);
1198         if (!chan) {
1199                 Config_Error(LOG_ERR, "Could not allocate memory for predefined channel (%d:%s = %s)", Line, Var, Arg);
1200                 return;
1201         }
1202         if (strcasecmp(Var, "Name") == 0) {
1203                 if (!Handle_Channelname(chan, Arg))
1204                         Config_Error_TooLong(Line, Var);
1205                 return;
1206         }
1207         if (strcasecmp(Var, "Modes") == 0) {
1208                 /* Initial modes */
1209                 len = strlcpy(chan->modes, Arg, sizeof(chan->modes));
1210                 if (len >= sizeof(chan->modes))
1211                         Config_Error_TooLong( Line, Var );
1212                 return;
1213         }
1214         if( strcasecmp( Var, "Topic" ) == 0 ) {
1215                 /* Initial topic */
1216                 len = strlcpy(chan->topic, Arg, sizeof(chan->topic));
1217                 if (len >= sizeof(chan->topic))
1218                         Config_Error_TooLong( Line, Var );
1219                 return;
1220         }
1221         if( strcasecmp( Var, "Key" ) == 0 ) {
1222                 /* Initial Channel Key (mode k) */
1223                 len = strlcpy(chan->key, Arg, sizeof(chan->key));
1224                 if (len >= sizeof(chan->key))
1225                         Config_Error_TooLong(Line, Var);
1226                 return;
1227         }
1228         if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
1229                 /* maximum user limit, mode l */
1230                 chan->maxusers = (unsigned long) atol(Arg);
1231                 if (chan->maxusers == 0)
1232                         Config_Error_NaN(Line, Var);
1233                 return;
1234         }
1235
1236         Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
1237                                                                 NGIRCd_ConfFile, Line, Var );
1238 } /* Handle_CHANNEL */
1239
1240
1241 static bool
1242 Validate_Config(bool Configtest, bool Rehash)
1243 {
1244         /* Validate configuration settings. */
1245
1246 #ifdef DEBUG
1247         int i, servers, servers_once;
1248 #endif
1249         bool config_valid = true;
1250         char *ptr;
1251
1252         /* Validate configured server name, see RFC 2812 section 2.3.1 */
1253         ptr = Conf_ServerName;
1254         do {
1255                 if (*ptr >= 'a' && *ptr <= 'z') continue;
1256                 if (*ptr >= 'A' && *ptr <= 'Z') continue;
1257                 if (*ptr >= '0' && *ptr <= '9') continue;
1258                 if (ptr > Conf_ServerName) {
1259                         if (*ptr == '.' || *ptr == '-')
1260                                 continue;
1261                 }
1262                 Conf_ServerName[0] = '\0';
1263                 break;
1264         } while (*(++ptr));
1265
1266         if (!Conf_ServerName[0]) {
1267                 /* No server name configured! */
1268                 config_valid = false;
1269                 Config_Error(LOG_ALERT,
1270                              "No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
1271                              NGIRCd_ConfFile);
1272                 if (!Configtest && !Rehash) {
1273                         Config_Error(LOG_ALERT,
1274                                      "%s exiting due to fatal errors!",
1275                                      PACKAGE_NAME);
1276                         exit(1);
1277                 }
1278         }
1279
1280         if (Conf_ServerName[0] && !strchr(Conf_ServerName, '.')) {
1281                 /* No dot in server name! */
1282                 config_valid = false;
1283                 Config_Error(LOG_ALERT,
1284                              "Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!",
1285                              NGIRCd_ConfFile);
1286                 if (!Configtest) {
1287                         Config_Error(LOG_ALERT,
1288                                      "%s exiting due to fatal errors!",
1289                                      PACKAGE_NAME);
1290                         exit(1);
1291                 }
1292         }
1293
1294 #ifdef STRICT_RFC
1295         if (!Conf_ServerAdminMail[0]) {
1296                 /* No administrative contact configured! */
1297                 config_valid = false;
1298                 Config_Error(LOG_ALERT,
1299                              "No administrator email address configured in \"%s\" ('AdminEMail')!",
1300                              NGIRCd_ConfFile);
1301                 if (!Configtest) {
1302                         Config_Error(LOG_ALERT,
1303                                      "%s exiting due to fatal errors!",
1304                                      PACKAGE_NAME);
1305                         exit(1);
1306                 }
1307         }
1308 #endif
1309
1310         if (!Conf_ServerAdmin1[0] && !Conf_ServerAdmin2[0]
1311             && !Conf_ServerAdminMail[0]) {
1312                 /* No administrative information configured! */
1313                 Config_Error(LOG_WARNING,
1314                              "No administrative information configured but required by RFC!");
1315         }
1316
1317 #ifdef DEBUG
1318         servers = servers_once = 0;
1319         for (i = 0; i < MAX_SERVERS; i++) {
1320                 if (Conf_Server[i].name[0]) {
1321                         servers++;
1322                         if (Conf_Server[i].flags & CONF_SFLAG_ONCE)
1323                                 servers_once++;
1324                 }
1325         }
1326         Log(LOG_DEBUG,
1327             "Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
1328             Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
1329 #endif
1330
1331         return config_valid;
1332 } /* Validate_Config */
1333
1334
1335 static void
1336 Config_Error_TooLong ( const int Line, const char *Item )
1337 {
1338         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
1339 }
1340
1341
1342 static void
1343 Config_Error_NaN( const int Line, const char *Item )
1344 {
1345         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
1346                                                 NGIRCd_ConfFile, Line, Item );
1347 }
1348
1349
1350 #ifdef PROTOTYPES
1351 static void Config_Error( const int Level, const char *Format, ... )
1352 #else
1353 static void Config_Error( Level, Format, va_alist )
1354 const int Level;
1355 const char *Format;
1356 va_dcl
1357 #endif
1358 {
1359         /* Error! Write to console and/or logfile. */
1360
1361         char msg[MAX_LOG_MSG_LEN];
1362         va_list ap;
1363
1364         assert( Format != NULL );
1365
1366 #ifdef PROTOTYPES
1367         va_start( ap, Format );
1368 #else
1369         va_start( ap );
1370 #endif
1371         vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
1372         va_end( ap );
1373
1374         /* During "normal operations" the log functions of the daemon should
1375          * be used, but during testing of the configuration file, all messages
1376          * should go directly to the console: */
1377         if (Use_Log) Log( Level, "%s", msg );
1378         else puts( msg );
1379 } /* Config_Error */
1380
1381
1382 static void
1383 Init_Server_Struct( CONF_SERVER *Server )
1384 {
1385         /* Initialize server configuration structur to default values */
1386
1387         assert( Server != NULL );
1388
1389         memset( Server, 0, sizeof (CONF_SERVER) );
1390
1391         Server->group = NONE;
1392         Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
1393
1394         if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
1395
1396         Resolve_Init(&Server->res_stat);
1397         Server->conn_id = NONE;
1398         memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
1399 } /* Init_Server_Struct */
1400
1401
1402 /* -eof- */