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