src/ngircd/conf.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2009 Alexander Barton (alex@barton.de)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  *
  11  * 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 "channel.h"
  44 #include "defines.h"
  45 #include "log.h"
  46 #include "match.h"
  47 #include "resolve.h"
  48 #include "tool.h"
  49
  50 #include "exp.h"
  51 #include "conf.h"
  52
  53
  54 static bool Use_Log = true;
  55 static CONF_SERVER New_Server;
  56 static int New_Server_Idx;
  57
  58 static size_t Conf_Channel_Count;
  59 static void Set_Defaults PARAMS(( bool InitServers ));
  60 static bool Read_Config PARAMS(( bool ngircd_starting ));
  61 static bool Validate_Config PARAMS(( bool TestOnly, bool Rehash ));
  62
  63 static void Handle_GLOBAL PARAMS(( int Line, char *Var, char *Arg ));
  64 static void Handle_OPERATOR PARAMS(( int Line, char *Var, char *Arg ));
  65 static void Handle_SERVER PARAMS(( int Line, char *Var, char *Arg ));
  66 static void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
  67
  68 static void Config_Error PARAMS(( const int Level, const char *Format, ... ));
  69
  70 static void Config_Error_NaN PARAMS(( const int LINE, const char *Value ));
  71 static void Config_Error_TooLong PARAMS(( const int LINE, const char *Value ));
  72
  73 static void Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
  74
  75 #ifdef WANT_IPV6
  76 #define DEFAULT_LISTEN_ADDRSTR "::,0.0.0.0"
  77 #else
  78 #define DEFAULT_LISTEN_ADDRSTR "0.0.0.0"
  79 #endif
  80
  81 #ifdef SSL_SUPPORT
  82 struct SSLOptions Conf_SSLOptions;
  83
  84 static void
  85 ConfSSL_Init(void)
  86 {
  87         free(Conf_SSLOptions.KeyFile);
  88         Conf_SSLOptions.KeyFile = NULL;
  89
  90         free(Conf_SSLOptions.CertFile);
  91         Conf_SSLOptions.CertFile = NULL;
  92
  93         free(Conf_SSLOptions.DHFile);
  94         Conf_SSLOptions.DHFile = NULL;
  95         array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
  96 }
  97
  98 static bool
  99 can_open(const char *name, const char *file)
 100 {
 101         FILE *fp = fopen(file, "r");
 102         if (fp)
 103                 fclose(fp);
 104         else
 105                 fprintf(stderr, "ERROR: %s \"%s\": %s\n",
 106                         name, file, strerror(errno));
 107         return fp != NULL;
 108 }
 109
 110 static bool
 111 ConfSSL_Puts(void)
 112 {
 113         bool ret = true;
 114
 115         if (Conf_SSLOptions.KeyFile) {
 116                 printf( "  SSLKeyFile = %s\n", Conf_SSLOptions.KeyFile);
 117                 ret = can_open("SSLKeyFile", Conf_SSLOptions.KeyFile);
 118         }
 119         if (Conf_SSLOptions.CertFile) {
 120                 printf( "  SSLCertFile = %s\n", Conf_SSLOptions.CertFile);
 121                 if (!can_open("SSLCertFile", Conf_SSLOptions.CertFile))
 122                         ret = false;
 123         }
 124         if (Conf_SSLOptions.DHFile) {
 125                 printf( "  SSLDHFile = %s\n", Conf_SSLOptions.DHFile);
 126                 if (!can_open("SSLDHFile", Conf_SSLOptions.DHFile))
 127                         ret = false;
 128         }
 129         if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
 130                 puts("  SSLKeyFilePassword = <secret>"  );
 131         array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
 132
 133         return ret;
 134 }
 135 #endif
 136
 137 static char *
 138 strdup_warn(const char *str)
 139 {
 140         char *ptr = strdup(str);
 141         if (!ptr)
 142                 Config_Error(LOG_ERR, "Could not allocate mem for string: %s", str);
 143         return ptr;
 144 }
 145
 146
 147 static void
 148 ports_puts(array *a)
 149 {
 150         size_t len;
 151         UINT16 *ports;
 152         len = array_length(a, sizeof(UINT16));
 153         if (len--) {
 154                 ports = (UINT16*) array_start(a);
 155                 printf("%u", (unsigned int) *ports);
 156                 while (len--) {
 157                         ports++;
 158                         printf(", %u", (unsigned int) *ports);
 159                 }
 160         }
 161         putc('\n', stdout);
 162 }
 163
 164
 165 static void
 166 ports_parse(array *a, int Line, char *Arg)
 167 {
 168         char *ptr;
 169         int port;
 170         UINT16 port16;
 171
 172         array_trunc(a);
 173
 174         /* Ports on that the server should listen. More port numbers
 175          * must be separated by "," */
 176         ptr = strtok( Arg, "," );
 177         while (ptr) {
 178                 ngt_TrimStr(ptr);
 179                 port = atoi(ptr);
 180                 if (port > 0 && port < 0xFFFF) {
 181                         port16 = (UINT16) port;
 182                         if (!array_catb(a, (char*)&port16, sizeof port16))
 183                                 Config_Error(LOG_ERR, "%s, line %d Could not add port number %ld: %s",
 184                                                         NGIRCd_ConfFile, Line, port, strerror(errno));
 185                 } else {
 186                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!",
 187                                                                         NGIRCd_ConfFile, Line, port );
 188                 }
 189
 190                 ptr = strtok( NULL, "," );
 191         }
 192 }
 193
 194
 195 GLOBAL void
 196 Conf_Init( void )
 197 {
 198         Read_Config( true );
 199         Validate_Config(false, false);
 200 } /* Config_Init */
 201
 202
 203 GLOBAL bool
 204 Conf_Rehash( void )
 205 {
 206         if (!Read_Config(false))
 207                 return false;
 208         Validate_Config(false, true);
 209
 210         /* Update CLIENT structure of local server */
 211         Client_SetInfo(Client_ThisServer(), Conf_ServerInfo);
 212         return true;
 213 } /* Config_Rehash */
 214
 215
 216 static const char*
 217 yesno_to_str(int boolean_value)
 218 {
 219         if (boolean_value)
 220                 return "yes";
 221         return "no";
 222 }
 223
 224
 225 GLOBAL int
 226 Conf_Test( void )
 227 {
 228         /* Read configuration, validate and output it. */
 229
 230         struct passwd *pwd;
 231         struct group *grp;
 232         unsigned int i;
 233         bool config_valid;
 234         size_t predef_channel_count;
 235         struct Conf_Channel *predef_chan;
 236
 237         Use_Log = false;
 238
 239         if (! Read_Config(true))
 240                 return 1;
 241
 242         config_valid = Validate_Config(true, false);
 243
 244         /* If stdin and stdout ("you can read our nice message and we can
 245          * read in your keypress") are valid tty's, wait for a key: */
 246         if( isatty( fileno( stdin )) && isatty( fileno( stdout ))) {
 247                 puts( "OK, press enter to see a dump of your service configuration ..." );
 248                 getchar( );
 249         } else {
 250                 puts( "Ok, dump of your server configuration follows:\n" );
 251         }
 252
 253         puts( "[GLOBAL]" );
 254         printf( "  Name = %s\n", Conf_ServerName );
 255         printf( "  Info = %s\n", Conf_ServerInfo );
 256         printf( "  Password = %s\n", Conf_ServerPwd );
 257         printf( "  AdminInfo1 = %s\n", Conf_ServerAdmin1 );
 258         printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
 259         printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
 260         printf( "  MotdFile = %s\n", Conf_MotdFile );
 261         printf( "  MotdPhrase = %s\n", Conf_MotdPhrase );
 262         printf( "  ChrootDir = %s\n", Conf_Chroot );
 263         printf( "  PidFile = %s\n", Conf_PidFile);
 264         printf("  Listen = %s\n", Conf_ListenAddress);
 265         fputs("  Ports = ", stdout);
 266
 267         ports_puts(&Conf_ListenPorts);
 268 #ifdef SSL_SUPPORT
 269         fputs("  SSLPorts = ", stdout);
 270         ports_puts(&Conf_SSLOptions.ListenPorts);
 271         if (!ConfSSL_Puts())
 272                 config_valid = false;
 273 #endif
 274
 275         pwd = getpwuid( Conf_UID );
 276         if( pwd ) printf( "  ServerUID = %s\n", pwd->pw_name );
 277         else printf( "  ServerUID = %ld\n", (long)Conf_UID );
 278         grp = getgrgid( Conf_GID );
 279         if( grp ) printf( "  ServerGID = %s\n", grp->gr_name );
 280         else printf( "  ServerGID = %ld\n", (long)Conf_GID );
 281         printf( "  PingTimeout = %d\n", Conf_PingTimeout );
 282         printf( "  PongTimeout = %d\n", Conf_PongTimeout );
 283         printf( "  ConnectRetry = %d\n", Conf_ConnectRetry );
 284         printf( "  OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
 285         printf( "  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
 286         printf( "  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
 287         printf( "  NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
 288         printf( "  NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
 289
 290 #ifdef WANT_IPV6
 291         printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
 292         printf("  ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
 293 #endif
 294         printf( "  MaxConnections = %ld\n", Conf_MaxConnections);
 295         printf( "  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
 296         printf( "  MaxJoins = %d\n", Conf_MaxJoins>0 ? Conf_MaxJoins : -1);
 297         printf( "  MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
 298
 299         for( i = 0; i < Conf_Oper_Count; i++ ) {
 300                 if( ! Conf_Oper[i].name[0] ) continue;
 301
 302                 /* Valid "Operator" section */
 303                 puts( "[OPERATOR]" );
 304                 printf( "  Name = %s\n", Conf_Oper[i].name );
 305                 printf( "  Password = %s\n", Conf_Oper[i].pwd );
 306                 if ( Conf_Oper[i].mask ) printf( "  Mask = %s\n", Conf_Oper[i].mask );
 307                 puts( "" );
 308         }
 309
 310         for( i = 0; i < MAX_SERVERS; i++ ) {
 311                 if( ! Conf_Server[i].name[0] ) continue;
 312
 313                 /* Valid "Server" section */
 314                 puts( "[SERVER]" );
 315                 printf( "  Name = %s\n", Conf_Server[i].name );
 316                 printf( "  Host = %s\n", Conf_Server[i].host );
 317                 printf( "  Port = %u\n", (unsigned int)Conf_Server[i].port );
 318 #ifdef SSL_SUPPORT
 319                 printf( "  SSLConnect = %s\n", Conf_Server[i].SSLConnect?"yes":"no");
 320 #endif
 321                 printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
 322                 printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
 323                 printf( "  ServiceMask = %s\n", Conf_Server[i].svs_mask);
 324                 printf( "  Group = %d\n", Conf_Server[i].group );
 325                 printf( "  Passive = %s\n\n", Conf_Server[i].flags & CONF_SFLAG_DISABLED ? "yes" : "no");
 326         }
 327
 328         predef_channel_count = array_length(&Conf_Channels, sizeof(*predef_chan));
 329         predef_chan = array_start(&Conf_Channels);
 330
 331         for (i = 0; i < predef_channel_count; i++, predef_chan++) {
 332                 if (!predef_chan->name[0])
 333                         continue;
 334
 335                 /* Valid "Channel" section */
 336                 puts( "[CHANNEL]" );
 337                 printf("  Name = %s\n", predef_chan->name);
 338                 printf("  Modes = %s\n", predef_chan->modes);
 339                 printf("  Key = %s\n", predef_chan->key);
 340                 printf("  MaxUsers = %lu\n", predef_chan->maxusers);
 341                 printf("  Topic = %s\n", predef_chan->topic);
 342                 printf("  KeyFile = %s\n\n", predef_chan->keyfile);
 343         }
 344
 345         return (config_valid ? 0 : 1);
 346 } /* Conf_Test */
 347
 348
 349 GLOBAL void
 350 Conf_UnsetServer( CONN_ID Idx )
 351 {
 352         /* Set next time for next connection attempt, if this is a server
 353          * link that is (still) configured here. If the server is set as
 354          * "once", delete it from our configuration.
 355          * Non-Server-Connections will be silently ignored. */
 356
 357         int i;
 358         time_t t;
 359
 360         /* Check all our configured servers */
 361         for( i = 0; i < MAX_SERVERS; i++ ) {
 362                 if( Conf_Server[i].conn_id != Idx ) continue;
 363
 364                 /* Gotcha! Mark server configuration as "unused": */
 365                 Conf_Server[i].conn_id = NONE;
 366
 367                 if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 368                         /* Delete configuration here */
 369                         Init_Server_Struct( &Conf_Server[i] );
 370                 } else {
 371                         /* Set time for next connect attempt */
 372                         t = time(NULL);
 373                         if (Conf_Server[i].lasttry < t - Conf_ConnectRetry) {
 374                                 /* The connection has been "long", so we don't
 375                                  * require the next attempt to be delayed. */
 376                                 Conf_Server[i].lasttry =
 377                                         t - Conf_ConnectRetry + RECONNECT_DELAY;
 378                         } else
 379                                 Conf_Server[i].lasttry = t;
 380                 }
 381         }
 382 } /* Conf_UnsetServer */
 383
 384
 385 GLOBAL void
 386 Conf_SetServer( int ConfServer, CONN_ID Idx )
 387 {
 388         /* Set connection for specified configured server */
 389
 390         assert( ConfServer > NONE );
 391         assert( Idx > NONE );
 392
 393         Conf_Server[ConfServer].conn_id = Idx;
 394 } /* Conf_SetServer */
 395
 396
 397 GLOBAL int
 398 Conf_GetServer( CONN_ID Idx )
 399 {
 400         /* Get index of server in configuration structure */
 401
 402         int i = 0;
 403
 404         assert( Idx > NONE );
 405
 406         for( i = 0; i < MAX_SERVERS; i++ ) {
 407                 if( Conf_Server[i].conn_id == Idx ) return i;
 408         }
 409         return NONE;
 410 } /* Conf_GetServer */
 411
 412
 413 GLOBAL bool
 414 Conf_EnableServer( const char *Name, UINT16 Port )
 415 {
 416         /* Enable specified server and adjust port */
 417
 418         int i;
 419
 420         assert( Name != NULL );
 421
 422         for( i = 0; i < MAX_SERVERS; i++ ) {
 423                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 424                         /* Gotcha! Set port and enable server: */
 425                         Conf_Server[i].port = Port;
 426                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 427                         return (Conf_Server[i].port && Conf_Server[i].host[0]);
 428                 }
 429         }
 430         return false;
 431 } /* Conf_EnableServer */
 432
 433
 434 GLOBAL bool
 435 Conf_EnablePassiveServer(const char *Name)
 436 {
 437         /* Enable specified server */
 438         int i;
 439
 440         assert( Name != NULL );
 441         for (i = 0; i < MAX_SERVERS; i++) {
 442                 if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
 443                         /* BINGO! Enable server */
 444                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 445                         return true;
 446                 }
 447         }
 448         return false;
 449 } /* Conf_EnablePassiveServer */
 450
 451
 452 GLOBAL bool
 453 Conf_DisableServer( const char *Name )
 454 {
 455         /* Enable specified server and adjust port */
 456
 457         int i;
 458
 459         assert( Name != NULL );
 460
 461         for( i = 0; i < MAX_SERVERS; i++ ) {
 462                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 463                         /* Gotcha! Disable and disconnect server: */
 464                         Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
 465                         if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
 466                         return true;
 467                 }
 468         }
 469         return false;
 470 } /* Conf_DisableServer */
 471
 472
 473 GLOBAL bool
 474 Conf_AddServer( const char *Name, UINT16 Port, const char *Host, const char *MyPwd, const char *PeerPwd )
 475 {
 476         /* Add new server to configuration */
 477
 478         int i;
 479
 480         assert( Name != NULL );
 481         assert( Host != NULL );
 482         assert( MyPwd != NULL );
 483         assert( PeerPwd != NULL );
 484
 485         /* Search unused item in server configuration structure */
 486         for( i = 0; i < MAX_SERVERS; i++ ) {
 487                 /* Is this item used? */
 488                 if( ! Conf_Server[i].name[0] ) break;
 489         }
 490         if( i >= MAX_SERVERS ) return false;
 491
 492         Init_Server_Struct( &Conf_Server[i] );
 493         strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
 494         strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
 495         strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
 496         strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
 497         Conf_Server[i].port = Port;
 498         Conf_Server[i].flags = CONF_SFLAG_ONCE;
 499
 500         return true;
 501 } /* Conf_AddServer */
 502
 503
 504 /**
 505  * Check if the given nick name is an service
 506  */
 507 GLOBAL bool
 508 Conf_IsService(int ConfServer, const char *Nick)
 509 {
 510         return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
 511 } /* Conf_IsService */
 512
 513
 514 static void
 515 Set_Defaults( bool InitServers )
 516 {
 517         /* Initialize configuration variables with default values. */
 518
 519         int i;
 520
 521         strcpy( Conf_ServerName, "" );
 522         snprintf( Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s", PACKAGE_NAME, PACKAGE_VERSION );
 523         strcpy( Conf_ServerPwd, "" );
 524
 525         strcpy( Conf_ServerAdmin1, "" );
 526         strcpy( Conf_ServerAdmin2, "" );
 527         strcpy( Conf_ServerAdminMail, "" );
 528
 529         strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
 530         strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
 531
 532         strlcpy( Conf_MotdPhrase, MOTD_PHRASE, sizeof( Conf_MotdPhrase ));
 533
 534         strlcpy( Conf_Chroot, CHROOT_DIR, sizeof( Conf_Chroot ));
 535
 536         strlcpy( Conf_PidFile, PID_FILE, sizeof( Conf_PidFile ));
 537
 538         free(Conf_ListenAddress);
 539         Conf_ListenAddress = NULL;
 540         Conf_UID = Conf_GID = 0;
 541
 542         Conf_PingTimeout = 120;
 543         Conf_PongTimeout = 20;
 544
 545         Conf_ConnectRetry = 60;
 546
 547         Conf_Oper_Count = 0;
 548         Conf_Channel_Count = 0;
 549
 550         Conf_OperCanMode = false;
 551         Conf_NoDNS = false;
 552         Conf_NoIdent = false;
 553         Conf_PredefChannelsOnly = false;
 554         Conf_OperServerMode = false;
 555
 556         Conf_ConnectIPv4 = true;
 557         Conf_ConnectIPv6 = true;
 558
 559         Conf_MaxConnections = 0;
 560         Conf_MaxConnectionsIP = 5;
 561         Conf_MaxJoins = 10;
 562         Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
 563
 564         /* Initialize server configuration structures */
 565         if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
 566 } /* Set_Defaults */
 567
 568
 569 static bool
 570 no_listenports(void)
 571 {
 572         size_t cnt = array_bytes(&Conf_ListenPorts);
 573 #ifdef SSL_SUPPORT
 574         cnt += array_bytes(&Conf_SSLOptions.ListenPorts);
 575 #endif
 576         return cnt == 0;
 577 }
 578
 579 static bool
 580 Read_Config( bool ngircd_starting )
 581 {
 582         /* Read configuration file. */
 583
 584         char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
 585         const UINT16 defaultport = 6667;
 586         int line, i, n;
 587         FILE *fd;
 588
 589         /* Open configuration file */
 590         fd = fopen( NGIRCd_ConfFile, "r" );
 591         if( ! fd ) {
 592                 /* No configuration file found! */
 593                 Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
 594                                         NGIRCd_ConfFile, strerror( errno ));
 595                 if (!ngircd_starting)
 596                         return false;
 597                 Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 598                 exit( 1 );
 599         }
 600
 601         Set_Defaults( ngircd_starting );
 602
 603         Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
 604
 605         /* Clean up server configuration structure: mark all already
 606          * configured servers as "once" so that they are deleted
 607          * after the next disconnect and delete all unused servers.
 608          * And delete all servers which are "duplicates" of servers
 609          * that are already marked as "once" (such servers have been
 610          * created by the last rehash but are now useless). */
 611         for( i = 0; i < MAX_SERVERS; i++ ) {
 612                 if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
 613                 else {
 614                         /* This structure is in use ... */
 615                         if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 616                                 /* Check for duplicates */
 617                                 for( n = 0; n < MAX_SERVERS; n++ ) {
 618                                         if( n == i ) continue;
 619
 620                                         if( Conf_Server[i].conn_id == Conf_Server[n].conn_id ) {
 621                                                 Init_Server_Struct( &Conf_Server[n] );
 622 #ifdef DEBUG
 623                                                 Log(LOG_DEBUG,"Deleted unused duplicate server %d (kept %d).",
 624                                                                                                 n, i );
 625 #endif
 626                                         }
 627                                 }
 628                         } else {
 629                                 /* Mark server as "once" */
 630                                 Conf_Server[i].flags |= CONF_SFLAG_ONCE;
 631                                 Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
 632                         }
 633                 }
 634         }
 635
 636         /* Initialize variables */
 637         line = 0;
 638         strcpy( section, "" );
 639         Init_Server_Struct( &New_Server );
 640         New_Server_Idx = NONE;
 641 #ifdef SSL_SUPPORT
 642         ConfSSL_Init();
 643 #endif
 644         /* Read configuration file */
 645         while( true ) {
 646                 if( ! fgets( str, LINE_LEN, fd )) break;
 647                 ngt_TrimStr( str );
 648                 line++;
 649
 650                 /* Skip comments and empty lines */
 651                 if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
 652
 653                 /* Is this the beginning of a new section? */
 654                 if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
 655                         strlcpy( section, str, sizeof( section ));
 656                         if( strcasecmp( section, "[GLOBAL]" ) == 0 )
 657                                 continue;
 658
 659                         if( strcasecmp( section, "[OPERATOR]" ) == 0 ) {
 660                                 if( Conf_Oper_Count + 1 > MAX_OPERATORS )
 661                                         Config_Error( LOG_ERR, "Too many operators configured.");
 662                                 else {
 663                                         /* Initialize new operator structure */
 664                                         Conf_Oper[Conf_Oper_Count].name[0] = '\0';
 665                                         Conf_Oper[Conf_Oper_Count].pwd[0] = '\0';
 666                                         if (Conf_Oper[Conf_Oper_Count].mask) {
 667                                                 free(Conf_Oper[Conf_Oper_Count].mask );
 668                                                 Conf_Oper[Conf_Oper_Count].mask = NULL;
 669                                         }
 670                                         Conf_Oper_Count++;
 671                                 }
 672                                 continue;
 673                         }
 674                         if( strcasecmp( section, "[SERVER]" ) == 0 ) {
 675                                 /* Check if there is already a server to add */
 676                                 if( New_Server.name[0] ) {
 677                                         /* Copy data to "real" server structure */
 678                                         assert( New_Server_Idx > NONE );
 679                                         Conf_Server[New_Server_Idx] = New_Server;
 680                                 }
 681
 682                                 /* Re-init structure for new server */
 683                                 Init_Server_Struct( &New_Server );
 684
 685                                 /* Search unused item in server configuration structure */
 686                                 for( i = 0; i < MAX_SERVERS; i++ ) {
 687                                         /* Is this item used? */
 688                                         if( ! Conf_Server[i].name[0] ) break;
 689                                 }
 690                                 if( i >= MAX_SERVERS ) {
 691                                         /* Oops, no free item found! */
 692                                         Config_Error( LOG_ERR, "Too many servers configured." );
 693                                         New_Server_Idx = NONE;
 694                                 }
 695                                 else New_Server_Idx = i;
 696                                 continue;
 697                         }
 698                         if (strcasecmp(section, "[CHANNEL]") == 0) {
 699                                 Conf_Channel_Count++;
 700                                 continue;
 701                         }
 702
 703                         Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
 704                         section[0] = 0x1;
 705                 }
 706                 if( section[0] == 0x1 ) continue;
 707
 708                 /* Split line into variable name and parameters */
 709                 ptr = strchr( str, '=' );
 710                 if( ! ptr ) {
 711                         Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
 712                         continue;
 713                 }
 714                 *ptr = '\0';
 715                 var = str; ngt_TrimStr( var );
 716                 arg = ptr + 1; ngt_TrimStr( arg );
 717
 718                 if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
 719                 else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
 720                 else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
 721                 else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
 722                 else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
 723         }
 724
 725         /* Close configuration file */
 726         fclose( fd );
 727
 728         /* Check if there is still a server to add */
 729         if( New_Server.name[0] ) {
 730                 /* Copy data to "real" server structure */
 731                 assert( New_Server_Idx > NONE );
 732                 Conf_Server[New_Server_Idx] = New_Server;
 733         }
 734
 735         /* not a single listening port? Add default. */
 736         if (no_listenports() &&
 737                 !array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport))
 738         {
 739                 Config_Error(LOG_ALERT, "Could not add default listening Port %u: %s",
 740                                         (unsigned int) defaultport, strerror(errno));
 741
 742                 exit(1);
 743         }
 744
 745         if (!Conf_ListenAddress)
 746                 Conf_ListenAddress = strdup_warn(DEFAULT_LISTEN_ADDRSTR);
 747
 748         if (!Conf_ListenAddress) {
 749                 Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 750                 exit(1);
 751         }
 752         return true;
 753 } /* Read_Config */
 754
 755
 756 static bool
 757 Check_ArgIsTrue( const char *Arg )
 758 {
 759         if( strcasecmp( Arg, "yes" ) == 0 ) return true;
 760         if( strcasecmp( Arg, "true" ) == 0 ) return true;
 761         if( atoi( Arg ) != 0 ) return true;
 762
 763         return false;
 764 } /* Check_ArgIsTrue */
 765
 766
 767 static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
 768 {
 769         unsigned new;
 770
 771         new = (unsigned) atoi(Arg) + 1;
 772         if (new > CLIENT_NICK_LEN) {
 773                 Config_Error(LOG_WARNING,
 774                              "%s, line %d: Value of \"MaxNickLength\" exceeds %u!",
 775                              NGIRCd_ConfFile, Line, CLIENT_NICK_LEN - 1);
 776                 return CLIENT_NICK_LEN;
 777         }
 778         if (new < 2) {
 779                 Config_Error(LOG_WARNING,
 780                              "%s, line %d: Value of \"MaxNickLength\" must be at least 1!",
 781                              NGIRCd_ConfFile, Line);
 782                 return 2;
 783         }
 784         return new;
 785 } /* Handle_MaxNickLength */
 786
 787
 788 static void
 789 Handle_GLOBAL( int Line, char *Var, char *Arg )
 790 {
 791         struct passwd *pwd;
 792         struct group *grp;
 793         size_t len;
 794
 795         assert( Line > 0 );
 796         assert( Var != NULL );
 797         assert( Arg != NULL );
 798
 799         if( strcasecmp( Var, "Name" ) == 0 ) {
 800                 /* Server name */
 801                 len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
 802                 if (len >= sizeof( Conf_ServerName ))
 803                         Config_Error_TooLong( Line, Var );
 804                 return;
 805         }
 806         if( strcasecmp( Var, "Info" ) == 0 ) {
 807                 /* Info text of server */
 808                 len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
 809                 if (len >= sizeof( Conf_ServerInfo ))
 810                         Config_Error_TooLong ( Line, Var );
 811                 return;
 812         }
 813         if( strcasecmp( Var, "Password" ) == 0 ) {
 814                 /* Global server password */
 815                 len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
 816                 if (len >= sizeof( Conf_ServerPwd ))
 817                         Config_Error_TooLong( Line, Var );
 818                 return;
 819         }
 820         if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
 821                 /* Administrative info #1 */
 822                 len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
 823                 if (len >= sizeof( Conf_ServerAdmin1 ))
 824                         Config_Error_TooLong ( Line, Var );
 825                 return;
 826         }
 827         if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
 828                 /* Administrative info #2 */
 829                 len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
 830                 if (len >= sizeof( Conf_ServerAdmin2 ))
 831                         Config_Error_TooLong ( Line, Var );
 832                 return;
 833         }
 834         if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
 835                 /* Administrative email contact */
 836                 len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
 837                 if (len >= sizeof( Conf_ServerAdminMail ))
 838                         Config_Error_TooLong( Line, Var );
 839                 return;
 840         }
 841
 842         if( strcasecmp( Var, "Ports" ) == 0 ) {
 843                 ports_parse(&Conf_ListenPorts, Line, Arg);
 844                 return;
 845         }
 846         if( strcasecmp( Var, "MotdFile" ) == 0 ) {
 847                 /* "Message of the day" (MOTD) file */
 848                 len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
 849                 if (len >= sizeof( Conf_MotdFile ))
 850                         Config_Error_TooLong( Line, Var );
 851                 return;
 852         }
 853         if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
 854                 /* "Message of the day" phrase (instead of file) */
 855                 len = strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase ));
 856                 if (len >= sizeof( Conf_MotdPhrase ))
 857                         Config_Error_TooLong( Line, Var );
 858                 return;
 859         }
 860         if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
 861                 /* directory for chroot() */
 862                 len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
 863                 if (len >= sizeof( Conf_Chroot ))
 864                         Config_Error_TooLong( Line, Var );
 865                 return;
 866         }
 867         if ( strcasecmp( Var, "PidFile" ) == 0 ) {
 868                 /* name of pidfile */
 869                 len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
 870                 if (len >= sizeof( Conf_PidFile ))
 871                         Config_Error_TooLong( Line, Var );
 872                 return;
 873         }
 874         if( strcasecmp( Var, "ServerUID" ) == 0 ) {
 875                 /* UID the daemon should switch to */
 876                 pwd = getpwnam( Arg );
 877                 if( pwd ) Conf_UID = pwd->pw_uid;
 878                 else {
 879 #ifdef HAVE_ISDIGIT
 880                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 881                         else
 882 #endif
 883                         Conf_UID = (unsigned int)atoi( Arg );
 884                 }
 885                 return;
 886         }
 887         if( strcasecmp( Var, "ServerGID" ) == 0 ) {
 888                 /* GID the daemon should use */
 889                 grp = getgrnam( Arg );
 890                 if( grp ) Conf_GID = grp->gr_gid;
 891                 else {
 892 #ifdef HAVE_ISDIGIT
 893                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 894                         else
 895 #endif
 896                         Conf_GID = (unsigned int)atoi( Arg );
 897                 }
 898                 return;
 899         }
 900         if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
 901                 /* PING timeout */
 902                 Conf_PingTimeout = atoi( Arg );
 903                 if( Conf_PingTimeout < 5 ) {
 904                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
 905                                                                         NGIRCd_ConfFile, Line );
 906                         Conf_PingTimeout = 5;
 907                 }
 908                 return;
 909         }
 910         if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
 911                 /* PONG timeout */
 912                 Conf_PongTimeout = atoi( Arg );
 913                 if( Conf_PongTimeout < 5 ) {
 914                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
 915                                                                         NGIRCd_ConfFile, Line );
 916                         Conf_PongTimeout = 5;
 917                 }
 918                 return;
 919         }
 920         if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
 921                 /* Seconds between connection attempts to other servers */
 922                 Conf_ConnectRetry = atoi( Arg );
 923                 if( Conf_ConnectRetry < 5 ) {
 924                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
 925                                                                         NGIRCd_ConfFile, Line );
 926                         Conf_ConnectRetry = 5;
 927                 }
 928                 return;
 929         }
 930         if( strcasecmp( Var, "PredefChannelsOnly" ) == 0 ) {
 931                 /* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
 932                 Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
 933                 return;
 934         }
 935         if( strcasecmp( Var, "NoDNS" ) == 0 ) {
 936                 /* don't do reverse dns lookups when clients connect? */
 937                 Conf_NoDNS = Check_ArgIsTrue( Arg );
 938                 return;
 939         }
 940         if (strcasecmp(Var, "NoIdent") == 0) {
 941                 /* don't do IDENT lookups when clients connect? */
 942                 Conf_NoIdent = Check_ArgIsTrue(Arg);
 943 #ifndef IDENTAUTH
 944                 if (!Conf_NoIdent) {
 945                         /* user has enabled ident lookups explicitly, but ... */
 946                         Config_Error(LOG_WARNING,
 947                                 "%s: line %d: NoIdent=False, but ngircd was built without IDENT support",
 948                                 NGIRCd_ConfFile, Line);
 949                 }
 950 #endif
 951                 return;
 952         }
 953 #ifdef WANT_IPV6
 954         /* the default setting for all the WANT_IPV6 special options is 'true' */
 955         if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
 956                 /* connect to other hosts using ipv6, if they have an AAAA record? */
 957                 Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
 958                 return;
 959         }
 960         if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
 961                 /* connect to other hosts using ipv4.
 962                  * again, this can be used for ipv6-only setups */
 963                 Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
 964                 return;
 965         }
 966 #endif
 967         if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
 968                 /* Are IRC operators allowed to use MODE in channels they aren't Op in? */
 969                 Conf_OperCanMode = Check_ArgIsTrue( Arg );
 970                 return;
 971         }
 972         if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
 973                 /* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
 974                 Conf_OperServerMode = Check_ArgIsTrue( Arg );
 975                 return;
 976         }
 977         if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
 978                 /* Maximum number of connections. 0 -> "no limit". */
 979 #ifdef HAVE_ISDIGIT
 980                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
 981                 else
 982 #endif
 983                 Conf_MaxConnections = atol( Arg );
 984                 return;
 985         }
 986         if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
 987                 /* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
 988 #ifdef HAVE_ISDIGIT
 989                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 990                 else
 991 #endif
 992                 Conf_MaxConnectionsIP = atoi( Arg );
 993                 return;
 994         }
 995         if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
 996                 /* Maximum number of channels a user can join. 0 -> "no limit". */
 997 #ifdef HAVE_ISDIGIT
 998                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 999                 else
1000 #endif
1001                 Conf_MaxJoins = atoi( Arg );
1002                 return;
1003         }
1004         if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
1005                 /* Maximum length of a nick name; must be same on all servers
1006                  * within the IRC network! */
1007                 Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
1008                 return;
1009         }
1010
1011         if( strcasecmp( Var, "Listen" ) == 0 ) {
1012                 /* IP-Address to bind sockets */
1013                 if (Conf_ListenAddress) {
1014                         Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
1015                         return;
1016                 }
1017                 Conf_ListenAddress = strdup_warn(Arg);
1018                 /*
1019                  * if allocation fails, we're in trouble:
1020                  * we cannot ignore the error -- otherwise ngircd
1021                  * would listen on all interfaces.
1022                  */
1023                 if (!Conf_ListenAddress) {
1024                         Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
1025                         exit(1);
1026                 }
1027                 return;
1028         }
1029
1030 #ifdef SSL_SUPPORT
1031         if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
1032                 ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
1033                 return;
1034         }
1035
1036         if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
1037                 assert(Conf_SSLOptions.KeyFile == NULL );
1038                 Conf_SSLOptions.KeyFile = strdup_warn(Arg);
1039                 return;
1040         }
1041         if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
1042                 assert(Conf_SSLOptions.CertFile == NULL );
1043                 Conf_SSLOptions.CertFile = strdup_warn(Arg);
1044                 return;
1045         }
1046
1047         if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
1048                 assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
1049                 if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
1050                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
1051                                                                 NGIRCd_ConfFile, Line, Var, strerror(errno));
1052                 return;
1053         }
1054         if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
1055                 assert(Conf_SSLOptions.DHFile == NULL);
1056                 Conf_SSLOptions.DHFile = strdup_warn( Arg );
1057                 return;
1058         }
1059 #endif
1060         Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
1061                                                                 NGIRCd_ConfFile, Line, Var);
1062 } /* Handle_GLOBAL */
1063
1064
1065 static void
1066 Handle_OPERATOR( int Line, char *Var, char *Arg )
1067 {
1068         unsigned int opercount;
1069         size_t len;
1070         assert( Line > 0 );
1071         assert( Var != NULL );
1072         assert( Arg != NULL );
1073         assert( Conf_Oper_Count > 0 );
1074
1075         if ( Conf_Oper_Count == 0 )
1076                 return;
1077
1078         opercount = Conf_Oper_Count - 1;
1079
1080         if( strcasecmp( Var, "Name" ) == 0 ) {
1081                 /* Name of IRC operator */
1082                 len = strlcpy( Conf_Oper[opercount].name, Arg, sizeof( Conf_Oper[opercount].name ));
1083                 if (len >= sizeof( Conf_Oper[opercount].name ))
1084                                 Config_Error_TooLong( Line, Var );
1085                 return;
1086         }
1087         if( strcasecmp( Var, "Password" ) == 0 ) {
1088                 /* Password of IRC operator */
1089                 len = strlcpy( Conf_Oper[opercount].pwd, Arg, sizeof( Conf_Oper[opercount].pwd ));
1090                 if (len >= sizeof( Conf_Oper[opercount].pwd ))
1091                                 Config_Error_TooLong( Line, Var );
1092                 return;
1093         }
1094         if( strcasecmp( Var, "Mask" ) == 0 ) {
1095                 if (Conf_Oper[opercount].mask) return; /* Hostname already configured */
1096
1097                 Conf_Oper[opercount].mask = strdup_warn( Arg );
1098                 return;
1099         }
1100         Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
1101                                                                 NGIRCd_ConfFile, Line, Var );
1102 } /* Handle_OPERATOR */
1103
1104
1105 static void
1106 Handle_SERVER( int Line, char *Var, char *Arg )
1107 {
1108         long port;
1109         size_t len;
1110
1111         assert( Line > 0 );
1112         assert( Var != NULL );
1113         assert( Arg != NULL );
1114
1115         /* Ignore server block if no space is left in server configuration structure */
1116         if( New_Server_Idx <= NONE ) return;
1117
1118         if( strcasecmp( Var, "Host" ) == 0 ) {
1119                 /* Hostname of the server */
1120                 len = strlcpy( New_Server.host, Arg, sizeof( New_Server.host ));
1121                 if (len >= sizeof( New_Server.host ))
1122                         Config_Error_TooLong ( Line, Var );
1123                 return;
1124         }
1125         if( strcasecmp( Var, "Name" ) == 0 ) {
1126                 /* Name of the server ("Nick"/"ID") */
1127                 len = strlcpy( New_Server.name, Arg, sizeof( New_Server.name ));
1128                 if (len >= sizeof( New_Server.name ))
1129                         Config_Error_TooLong( Line, Var );
1130                 return;
1131         }
1132         if (strcasecmp(Var, "Bind") == 0) {
1133                 if (ng_ipaddr_init(&New_Server.bind_addr, Arg, 0))
1134                         return;
1135
1136                 Config_Error(LOG_ERR, "%s, line %d (section \"Server\"): Can't parse IP address \"%s\"",
1137                                 NGIRCd_ConfFile, Line, Arg);
1138                 return;
1139         }
1140         if( strcasecmp( Var, "MyPassword" ) == 0 ) {
1141                 /* Password of this server which is sent to the peer */
1142                 if (*Arg == ':') {
1143                         Config_Error(LOG_ERR,
1144                                 "%s, line %d (section \"Server\"): MyPassword must not start with ':'!",
1145                                                                                 NGIRCd_ConfFile, Line);
1146                 }
1147                 len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
1148                 if (len >= sizeof( New_Server.pwd_in ))
1149                         Config_Error_TooLong( Line, Var );
1150                 return;
1151         }
1152         if( strcasecmp( Var, "PeerPassword" ) == 0 ) {
1153                 /* Passwort of the peer which must be received */
1154                 len = strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out ));
1155                 if (len >= sizeof( New_Server.pwd_out ))
1156                         Config_Error_TooLong( Line, Var );
1157                 return;
1158         }
1159         if( strcasecmp( Var, "Port" ) == 0 ) {
1160                 /* Port to which this server should connect */
1161                 port = atol( Arg );
1162                 if( port > 0 && port < 0xFFFF )
1163                         New_Server.port = (UINT16)port;
1164                 else
1165                         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
1166                                                                                 NGIRCd_ConfFile, Line, port );
1167                 return;
1168         }
1169 #ifdef SSL_SUPPORT
1170         if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
1171                 New_Server.SSLConnect = Check_ArgIsTrue(Arg);
1172                 return;
1173         }
1174 #endif
1175         if( strcasecmp( Var, "Group" ) == 0 ) {
1176                 /* Server group */
1177 #ifdef HAVE_ISDIGIT
1178                 if( ! isdigit( (int)*Arg ))
1179                         Config_Error_NaN( Line, Var );
1180                 else
1181 #endif
1182                 New_Server.group = atoi( Arg );
1183                 return;
1184         }
1185         if( strcasecmp( Var, "Passive" ) == 0 ) {
1186                 if (Check_ArgIsTrue(Arg))
1187                         New_Server.flags |= CONF_SFLAG_DISABLED;
1188                 return;
1189         }
1190         if (strcasecmp(Var, "ServiceMask") == 0) {
1191                 len = strlcpy(New_Server.svs_mask, ngt_LowerStr(Arg),
1192                               sizeof(New_Server.svs_mask));
1193                 if (len >= sizeof(New_Server.svs_mask))
1194                         Config_Error_TooLong(Line, Var);
1195                 return;
1196         }
1197
1198         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
1199                                                                 NGIRCd_ConfFile, Line, Var );
1200 } /* Handle_SERVER */
1201
1202
1203 static bool
1204 Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
1205 {
1206         size_t size = sizeof(new_chan->name);
1207         char *dest = new_chan->name;
1208
1209         if (!Channel_IsValidName(name)) {
1210                 /*
1211                  * maybe user forgot to add a '#'.
1212                  * This is only here for user convenience.
1213                  */
1214                 *dest = '#';
1215                 --size;
1216                 ++dest;
1217         }
1218         return size > strlcpy(dest, name, size);
1219 }
1220
1221
1222 static void
1223 Handle_CHANNEL(int Line, char *Var, char *Arg)
1224 {
1225         size_t len;
1226         size_t chancount;
1227         struct Conf_Channel *chan;
1228
1229         assert( Line > 0 );
1230         assert( Var != NULL );
1231         assert( Arg != NULL );
1232         assert(Conf_Channel_Count > 0);
1233
1234         chancount = Conf_Channel_Count - 1;
1235
1236         chan = array_alloc(&Conf_Channels, sizeof(*chan), chancount);
1237         if (!chan) {
1238                 Config_Error(LOG_ERR, "Could not allocate memory for predefined channel (%d:%s = %s)", Line, Var, Arg);
1239                 return;
1240         }
1241         if (strcasecmp(Var, "Name") == 0) {
1242                 if (!Handle_Channelname(chan, Arg))
1243                         Config_Error_TooLong(Line, Var);
1244                 return;
1245         }
1246         if (strcasecmp(Var, "Modes") == 0) {
1247                 /* Initial modes */
1248                 len = strlcpy(chan->modes, Arg, sizeof(chan->modes));
1249                 if (len >= sizeof(chan->modes))
1250                         Config_Error_TooLong( Line, Var );
1251                 return;
1252         }
1253         if( strcasecmp( Var, "Topic" ) == 0 ) {
1254                 /* Initial topic */
1255                 len = strlcpy(chan->topic, Arg, sizeof(chan->topic));
1256                 if (len >= sizeof(chan->topic))
1257                         Config_Error_TooLong( Line, Var );
1258                 return;
1259         }
1260         if( strcasecmp( Var, "Key" ) == 0 ) {
1261                 /* Initial Channel Key (mode k) */
1262                 len = strlcpy(chan->key, Arg, sizeof(chan->key));
1263                 if (len >= sizeof(chan->key))
1264                         Config_Error_TooLong(Line, Var);
1265                 return;
1266         }
1267         if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
1268                 /* maximum user limit, mode l */
1269                 chan->maxusers = (unsigned long) atol(Arg);
1270                 if (chan->maxusers == 0)
1271                         Config_Error_NaN(Line, Var);
1272                 return;
1273         }
1274         if (strcasecmp(Var, "KeyFile") == 0) {
1275                 /* channel keys */
1276                 len = strlcpy(chan->keyfile, Arg, sizeof(chan->keyfile));
1277                 if (len >= sizeof(chan->keyfile))
1278                         Config_Error_TooLong(Line, Var);
1279                 return;
1280         }
1281
1282         Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
1283                                                                 NGIRCd_ConfFile, Line, Var );
1284 } /* Handle_CHANNEL */
1285
1286
1287 static bool
1288 Validate_Config(bool Configtest, bool Rehash)
1289 {
1290         /* Validate configuration settings. */
1291
1292 #ifdef DEBUG
1293         int i, servers, servers_once;
1294 #endif
1295         bool config_valid = true;
1296         char *ptr;
1297
1298         /* Validate configured server name, see RFC 2812 section 2.3.1 */
1299         ptr = Conf_ServerName;
1300         do {
1301                 if (*ptr >= 'a' && *ptr <= 'z') continue;
1302                 if (*ptr >= 'A' && *ptr <= 'Z') continue;
1303                 if (*ptr >= '0' && *ptr <= '9') continue;
1304                 if (ptr > Conf_ServerName) {
1305                         if (*ptr == '.' || *ptr == '-')
1306                                 continue;
1307                 }
1308                 Conf_ServerName[0] = '\0';
1309                 break;
1310         } while (*(++ptr));
1311
1312         if (!Conf_ServerName[0]) {
1313                 /* No server name configured! */
1314                 config_valid = false;
1315                 Config_Error(LOG_ALERT,
1316                              "No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
1317                              NGIRCd_ConfFile);
1318                 if (!Configtest && !Rehash) {
1319                         Config_Error(LOG_ALERT,
1320                                      "%s exiting due to fatal errors!",
1321                                      PACKAGE_NAME);
1322                         exit(1);
1323                 }
1324         }
1325
1326         if (Conf_ServerName[0] && !strchr(Conf_ServerName, '.')) {
1327                 /* No dot in server name! */
1328                 config_valid = false;
1329                 Config_Error(LOG_ALERT,
1330                              "Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!",
1331                              NGIRCd_ConfFile);
1332                 if (!Configtest) {
1333                         Config_Error(LOG_ALERT,
1334                                      "%s exiting due to fatal errors!",
1335                                      PACKAGE_NAME);
1336                         exit(1);
1337                 }
1338         }
1339
1340 #ifdef STRICT_RFC
1341         if (!Conf_ServerAdminMail[0]) {
1342                 /* No administrative contact configured! */
1343                 config_valid = false;
1344                 Config_Error(LOG_ALERT,
1345                              "No administrator email address configured in \"%s\" ('AdminEMail')!",
1346                              NGIRCd_ConfFile);
1347                 if (!Configtest) {
1348                         Config_Error(LOG_ALERT,
1349                                      "%s exiting due to fatal errors!",
1350                                      PACKAGE_NAME);
1351                         exit(1);
1352                 }
1353         }
1354 #endif
1355
1356         if (!Conf_ServerAdmin1[0] && !Conf_ServerAdmin2[0]
1357             && !Conf_ServerAdminMail[0]) {
1358                 /* No administrative information configured! */
1359                 Config_Error(LOG_WARNING,
1360                              "No administrative information configured but required by RFC!");
1361         }
1362
1363 #ifdef DEBUG
1364         servers = servers_once = 0;
1365         for (i = 0; i < MAX_SERVERS; i++) {
1366                 if (Conf_Server[i].name[0]) {
1367                         servers++;
1368                         if (Conf_Server[i].flags & CONF_SFLAG_ONCE)
1369                                 servers_once++;
1370                 }
1371         }
1372         Log(LOG_DEBUG,
1373             "Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
1374             Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
1375 #endif
1376
1377         return config_valid;
1378 } /* Validate_Config */
1379
1380
1381 static void
1382 Config_Error_TooLong ( const int Line, const char *Item )
1383 {
1384         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
1385 }
1386
1387
1388 static void
1389 Config_Error_NaN( const int Line, const char *Item )
1390 {
1391         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
1392                                                 NGIRCd_ConfFile, Line, Item );
1393 }
1394
1395
1396 #ifdef PROTOTYPES
1397 static void Config_Error( const int Level, const char *Format, ... )
1398 #else
1399 static void Config_Error( Level, Format, va_alist )
1400 const int Level;
1401 const char *Format;
1402 va_dcl
1403 #endif
1404 {
1405         /* Error! Write to console and/or logfile. */
1406
1407         char msg[MAX_LOG_MSG_LEN];
1408         va_list ap;
1409
1410         assert( Format != NULL );
1411
1412 #ifdef PROTOTYPES
1413         va_start( ap, Format );
1414 #else
1415         va_start( ap );
1416 #endif
1417         vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
1418         va_end( ap );
1419
1420         /* During "normal operations" the log functions of the daemon should
1421          * be used, but during testing of the configuration file, all messages
1422          * should go directly to the console: */
1423         if (Use_Log) Log( Level, "%s", msg );
1424         else puts( msg );
1425 } /* Config_Error */
1426
1427
1428 static void
1429 Init_Server_Struct( CONF_SERVER *Server )
1430 {
1431         /* Initialize server configuration structur to default values */
1432
1433         assert( Server != NULL );
1434
1435         memset( Server, 0, sizeof (CONF_SERVER) );
1436
1437         Server->group = NONE;
1438         Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
1439
1440         if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
1441
1442         Resolve_Init(&Server->res_stat);
1443         Server->conn_id = NONE;
1444         memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
1445 } /* Init_Server_Struct */
1446
1447
1448 /* -eof- */