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         ports_puts(&Conf_ListenPorts);
 267 #ifdef SSL_SUPPORT
 268         fputs("  SSLPorts = ", stdout);
 269         ports_puts(&Conf_SSLOptions.ListenPorts);
 270         if (!ConfSSL_Puts())
 271                 config_valid = false;
 272 #endif
 273
 274         pwd = getpwuid(Conf_UID);
 275         if (pwd)
 276                 printf("  ServerUID = %s\n", pwd->pw_name);
 277         else
 278                 printf("  ServerUID = %ld\n", (long)Conf_UID);
 279         grp = getgrgid(Conf_GID);
 280         if (grp)
 281                 printf("  ServerGID = %s\n", grp->gr_name);
 282         else
 283                 printf("  ServerGID = %ld\n", (long)Conf_GID);
 284         printf("  PingTimeout = %d\n", Conf_PingTimeout);
 285         printf("  PongTimeout = %d\n", Conf_PongTimeout);
 286         printf("  ConnectRetry = %d\n", Conf_ConnectRetry);
 287         printf("  OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
 288         printf("  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
 289         printf("  AllowRemoteOper = %s\n", yesno_to_str(Conf_AllowRemoteOper));
 290         printf("  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
 291         printf("  NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
 292         printf("  NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
 293
 294 #ifdef WANT_IPV6
 295         printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
 296         printf("  ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
 297 #endif
 298         printf("  MaxConnections = %ld\n", Conf_MaxConnections);
 299         printf("  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
 300         printf("  MaxJoins = %d\n", Conf_MaxJoins > 0 ? Conf_MaxJoins : -1);
 301         printf("  MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
 302
 303         for( i = 0; i < Conf_Oper_Count; i++ ) {
 304                 if( ! Conf_Oper[i].name[0] ) continue;
 305
 306                 /* Valid "Operator" section */
 307                 puts( "[OPERATOR]" );
 308                 printf( "  Name = %s\n", Conf_Oper[i].name );
 309                 printf( "  Password = %s\n", Conf_Oper[i].pwd );
 310                 if ( Conf_Oper[i].mask ) printf( "  Mask = %s\n", Conf_Oper[i].mask );
 311                 puts( "" );
 312         }
 313
 314         for( i = 0; i < MAX_SERVERS; i++ ) {
 315                 if( ! Conf_Server[i].name[0] ) continue;
 316
 317                 /* Valid "Server" section */
 318                 puts( "[SERVER]" );
 319                 printf( "  Name = %s\n", Conf_Server[i].name );
 320                 printf( "  Host = %s\n", Conf_Server[i].host );
 321                 printf( "  Port = %u\n", (unsigned int)Conf_Server[i].port );
 322 #ifdef SSL_SUPPORT
 323                 printf( "  SSLConnect = %s\n", Conf_Server[i].SSLConnect?"yes":"no");
 324 #endif
 325                 printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
 326                 printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
 327                 printf( "  ServiceMask = %s\n", Conf_Server[i].svs_mask);
 328                 printf( "  Group = %d\n", Conf_Server[i].group );
 329                 printf( "  Passive = %s\n\n", Conf_Server[i].flags & CONF_SFLAG_DISABLED ? "yes" : "no");
 330         }
 331
 332         predef_channel_count = array_length(&Conf_Channels, sizeof(*predef_chan));
 333         predef_chan = array_start(&Conf_Channels);
 334
 335         for (i = 0; i < predef_channel_count; i++, predef_chan++) {
 336                 if (!predef_chan->name[0])
 337                         continue;
 338
 339                 /* Valid "Channel" section */
 340                 puts( "[CHANNEL]" );
 341                 printf("  Name = %s\n", predef_chan->name);
 342                 printf("  Modes = %s\n", predef_chan->modes);
 343                 printf("  Key = %s\n", predef_chan->key);
 344                 printf("  MaxUsers = %lu\n", predef_chan->maxusers);
 345                 printf("  Topic = %s\n", predef_chan->topic);
 346                 printf("  KeyFile = %s\n\n", predef_chan->keyfile);
 347         }
 348
 349         return (config_valid ? 0 : 1);
 350 } /* Conf_Test */
 351
 352
 353 GLOBAL void
 354 Conf_UnsetServer( CONN_ID Idx )
 355 {
 356         /* Set next time for next connection attempt, if this is a server
 357          * link that is (still) configured here. If the server is set as
 358          * "once", delete it from our configuration.
 359          * Non-Server-Connections will be silently ignored. */
 360
 361         int i;
 362         time_t t;
 363
 364         /* Check all our configured servers */
 365         for( i = 0; i < MAX_SERVERS; i++ ) {
 366                 if( Conf_Server[i].conn_id != Idx ) continue;
 367
 368                 /* Gotcha! Mark server configuration as "unused": */
 369                 Conf_Server[i].conn_id = NONE;
 370
 371                 if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 372                         /* Delete configuration here */
 373                         Init_Server_Struct( &Conf_Server[i] );
 374                 } else {
 375                         /* Set time for next connect attempt */
 376                         t = time(NULL);
 377                         if (Conf_Server[i].lasttry < t - Conf_ConnectRetry) {
 378                                 /* The connection has been "long", so we don't
 379                                  * require the next attempt to be delayed. */
 380                                 Conf_Server[i].lasttry =
 381                                         t - Conf_ConnectRetry + RECONNECT_DELAY;
 382                         } else
 383                                 Conf_Server[i].lasttry = t;
 384                 }
 385         }
 386 } /* Conf_UnsetServer */
 387
 388
 389 GLOBAL void
 390 Conf_SetServer( int ConfServer, CONN_ID Idx )
 391 {
 392         /* Set connection for specified configured server */
 393
 394         assert( ConfServer > NONE );
 395         assert( Idx > NONE );
 396
 397         Conf_Server[ConfServer].conn_id = Idx;
 398 } /* Conf_SetServer */
 399
 400
 401 GLOBAL int
 402 Conf_GetServer( CONN_ID Idx )
 403 {
 404         /* Get index of server in configuration structure */
 405
 406         int i = 0;
 407
 408         assert( Idx > NONE );
 409
 410         for( i = 0; i < MAX_SERVERS; i++ ) {
 411                 if( Conf_Server[i].conn_id == Idx ) return i;
 412         }
 413         return NONE;
 414 } /* Conf_GetServer */
 415
 416
 417 GLOBAL bool
 418 Conf_EnableServer( const char *Name, UINT16 Port )
 419 {
 420         /* Enable specified server and adjust port */
 421
 422         int i;
 423
 424         assert( Name != NULL );
 425
 426         for( i = 0; i < MAX_SERVERS; i++ ) {
 427                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 428                         /* Gotcha! Set port and enable server: */
 429                         Conf_Server[i].port = Port;
 430                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 431                         return (Conf_Server[i].port && Conf_Server[i].host[0]);
 432                 }
 433         }
 434         return false;
 435 } /* Conf_EnableServer */
 436
 437
 438 GLOBAL bool
 439 Conf_EnablePassiveServer(const char *Name)
 440 {
 441         /* Enable specified server */
 442         int i;
 443
 444         assert( Name != NULL );
 445         for (i = 0; i < MAX_SERVERS; i++) {
 446                 if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
 447                         /* BINGO! Enable server */
 448                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 449                         return true;
 450                 }
 451         }
 452         return false;
 453 } /* Conf_EnablePassiveServer */
 454
 455
 456 GLOBAL bool
 457 Conf_DisableServer( const char *Name )
 458 {
 459         /* Enable specified server and adjust port */
 460
 461         int i;
 462
 463         assert( Name != NULL );
 464
 465         for( i = 0; i < MAX_SERVERS; i++ ) {
 466                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 467                         /* Gotcha! Disable and disconnect server: */
 468                         Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
 469                         if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
 470                         return true;
 471                 }
 472         }
 473         return false;
 474 } /* Conf_DisableServer */
 475
 476
 477 GLOBAL bool
 478 Conf_AddServer( const char *Name, UINT16 Port, const char *Host, const char *MyPwd, const char *PeerPwd )
 479 {
 480         /* Add new server to configuration */
 481
 482         int i;
 483
 484         assert( Name != NULL );
 485         assert( Host != NULL );
 486         assert( MyPwd != NULL );
 487         assert( PeerPwd != NULL );
 488
 489         /* Search unused item in server configuration structure */
 490         for( i = 0; i < MAX_SERVERS; i++ ) {
 491                 /* Is this item used? */
 492                 if( ! Conf_Server[i].name[0] ) break;
 493         }
 494         if( i >= MAX_SERVERS ) return false;
 495
 496         Init_Server_Struct( &Conf_Server[i] );
 497         strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
 498         strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
 499         strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
 500         strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
 501         Conf_Server[i].port = Port;
 502         Conf_Server[i].flags = CONF_SFLAG_ONCE;
 503
 504         return true;
 505 } /* Conf_AddServer */
 506
 507
 508 /**
 509  * Check if the given nick name is an service
 510  */
 511 GLOBAL bool
 512 Conf_IsService(int ConfServer, const char *Nick)
 513 {
 514         return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
 515 } /* Conf_IsService */
 516
 517
 518 /**
 519  * Initialize configuration settings with their default values.
 520  */
 521 static void
 522 Set_Defaults(bool InitServers)
 523 {
 524         int i;
 525
 526         strcpy(Conf_ServerName, "");
 527         snprintf(Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s",
 528                  PACKAGE_NAME, PACKAGE_VERSION);
 529         strcpy(Conf_ServerPwd, "");
 530
 531         strcpy(Conf_ServerAdmin1, "");
 532         strcpy(Conf_ServerAdmin2, "");
 533         strcpy(Conf_ServerAdminMail, "");
 534
 535         strlcpy(Conf_MotdFile, SYSCONFDIR, sizeof(Conf_MotdFile));
 536         strlcat(Conf_MotdFile, MOTD_FILE, sizeof(Conf_MotdFile));
 537         strlcpy(Conf_MotdPhrase, MOTD_PHRASE, sizeof(Conf_MotdPhrase));
 538
 539         Conf_UID = Conf_GID = 0;
 540         strlcpy(Conf_Chroot, CHROOT_DIR, sizeof(Conf_Chroot));
 541         strlcpy(Conf_PidFile, PID_FILE, sizeof(Conf_PidFile));
 542
 543         free(Conf_ListenAddress);
 544         Conf_ListenAddress = NULL;
 545
 546         Conf_PingTimeout = 120;
 547         Conf_PongTimeout = 20;
 548         Conf_ConnectRetry = 60;
 549         Conf_NoDNS = false;
 550         Conf_NoIdent = false;
 551
 552         Conf_Oper_Count = 0;
 553         Conf_Channel_Count = 0;
 554
 555         Conf_OperCanMode = false;
 556         Conf_OperServerMode = false;
 557         Conf_AllowRemoteOper = false;
 558         Conf_PredefChannelsOnly = false;
 559
 560         Conf_ConnectIPv4 = true;
 561         Conf_ConnectIPv6 = true;
 562
 563         Conf_MaxConnections = 0;
 564         Conf_MaxConnectionsIP = 5;
 565         Conf_MaxJoins = 10;
 566         Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
 567
 568         /* Initialize server configuration structures */
 569         if (InitServers) {
 570                 for (i = 0; i < MAX_SERVERS;
 571                      Init_Server_Struct(&Conf_Server[i++]));
 572         }
 573 } /* Set_Defaults */
 574
 575
 576 static bool
 577 no_listenports(void)
 578 {
 579         size_t cnt = array_bytes(&Conf_ListenPorts);
 580 #ifdef SSL_SUPPORT
 581         cnt += array_bytes(&Conf_SSLOptions.ListenPorts);
 582 #endif
 583         return cnt == 0;
 584 }
 585
 586 static bool
 587 Read_Config( bool ngircd_starting )
 588 {
 589         /* Read configuration file. */
 590
 591         char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
 592         const UINT16 defaultport = 6667;
 593         int line, i, n;
 594         FILE *fd;
 595
 596         /* Open configuration file */
 597         fd = fopen( NGIRCd_ConfFile, "r" );
 598         if( ! fd ) {
 599                 /* No configuration file found! */
 600                 Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
 601                                         NGIRCd_ConfFile, strerror( errno ));
 602                 if (!ngircd_starting)
 603                         return false;
 604                 Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 605                 exit( 1 );
 606         }
 607
 608         Set_Defaults( ngircd_starting );
 609
 610         Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
 611
 612         /* Clean up server configuration structure: mark all already
 613          * configured servers as "once" so that they are deleted
 614          * after the next disconnect and delete all unused servers.
 615          * And delete all servers which are "duplicates" of servers
 616          * that are already marked as "once" (such servers have been
 617          * created by the last rehash but are now useless). */
 618         for( i = 0; i < MAX_SERVERS; i++ ) {
 619                 if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
 620                 else {
 621                         /* This structure is in use ... */
 622                         if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 623                                 /* Check for duplicates */
 624                                 for( n = 0; n < MAX_SERVERS; n++ ) {
 625                                         if( n == i ) continue;
 626
 627                                         if( Conf_Server[i].conn_id == Conf_Server[n].conn_id ) {
 628                                                 Init_Server_Struct( &Conf_Server[n] );
 629 #ifdef DEBUG
 630                                                 Log(LOG_DEBUG,"Deleted unused duplicate server %d (kept %d).",
 631                                                                                                 n, i );
 632 #endif
 633                                         }
 634                                 }
 635                         } else {
 636                                 /* Mark server as "once" */
 637                                 Conf_Server[i].flags |= CONF_SFLAG_ONCE;
 638                                 Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
 639                         }
 640                 }
 641         }
 642
 643         /* Initialize variables */
 644         line = 0;
 645         strcpy( section, "" );
 646         Init_Server_Struct( &New_Server );
 647         New_Server_Idx = NONE;
 648 #ifdef SSL_SUPPORT
 649         ConfSSL_Init();
 650 #endif
 651         /* Read configuration file */
 652         while( true ) {
 653                 if( ! fgets( str, LINE_LEN, fd )) break;
 654                 ngt_TrimStr( str );
 655                 line++;
 656
 657                 /* Skip comments and empty lines */
 658                 if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
 659
 660                 /* Is this the beginning of a new section? */
 661                 if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
 662                         strlcpy( section, str, sizeof( section ));
 663                         if( strcasecmp( section, "[GLOBAL]" ) == 0 )
 664                                 continue;
 665
 666                         if( strcasecmp( section, "[OPERATOR]" ) == 0 ) {
 667                                 if( Conf_Oper_Count + 1 > MAX_OPERATORS )
 668                                         Config_Error( LOG_ERR, "Too many operators configured.");
 669                                 else {
 670                                         /* Initialize new operator structure */
 671                                         Conf_Oper[Conf_Oper_Count].name[0] = '\0';
 672                                         Conf_Oper[Conf_Oper_Count].pwd[0] = '\0';
 673                                         if (Conf_Oper[Conf_Oper_Count].mask) {
 674                                                 free(Conf_Oper[Conf_Oper_Count].mask );
 675                                                 Conf_Oper[Conf_Oper_Count].mask = NULL;
 676                                         }
 677                                         Conf_Oper_Count++;
 678                                 }
 679                                 continue;
 680                         }
 681                         if( strcasecmp( section, "[SERVER]" ) == 0 ) {
 682                                 /* Check if there is already a server to add */
 683                                 if( New_Server.name[0] ) {
 684                                         /* Copy data to "real" server structure */
 685                                         assert( New_Server_Idx > NONE );
 686                                         Conf_Server[New_Server_Idx] = New_Server;
 687                                 }
 688
 689                                 /* Re-init structure for new server */
 690                                 Init_Server_Struct( &New_Server );
 691
 692                                 /* Search unused item in server configuration structure */
 693                                 for( i = 0; i < MAX_SERVERS; i++ ) {
 694                                         /* Is this item used? */
 695                                         if( ! Conf_Server[i].name[0] ) break;
 696                                 }
 697                                 if( i >= MAX_SERVERS ) {
 698                                         /* Oops, no free item found! */
 699                                         Config_Error( LOG_ERR, "Too many servers configured." );
 700                                         New_Server_Idx = NONE;
 701                                 }
 702                                 else New_Server_Idx = i;
 703                                 continue;
 704                         }
 705                         if (strcasecmp(section, "[CHANNEL]") == 0) {
 706                                 Conf_Channel_Count++;
 707                                 continue;
 708                         }
 709
 710                         Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
 711                         section[0] = 0x1;
 712                 }
 713                 if( section[0] == 0x1 ) continue;
 714
 715                 /* Split line into variable name and parameters */
 716                 ptr = strchr( str, '=' );
 717                 if( ! ptr ) {
 718                         Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
 719                         continue;
 720                 }
 721                 *ptr = '\0';
 722                 var = str; ngt_TrimStr( var );
 723                 arg = ptr + 1; ngt_TrimStr( arg );
 724
 725                 if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
 726                 else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
 727                 else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
 728                 else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
 729                 else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
 730         }
 731
 732         /* Close configuration file */
 733         fclose( fd );
 734
 735         /* Check if there is still a server to add */
 736         if( New_Server.name[0] ) {
 737                 /* Copy data to "real" server structure */
 738                 assert( New_Server_Idx > NONE );
 739                 Conf_Server[New_Server_Idx] = New_Server;
 740         }
 741
 742         /* not a single listening port? Add default. */
 743         if (no_listenports() &&
 744                 !array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport))
 745         {
 746                 Config_Error(LOG_ALERT, "Could not add default listening Port %u: %s",
 747                                         (unsigned int) defaultport, strerror(errno));
 748
 749                 exit(1);
 750         }
 751
 752         if (!Conf_ListenAddress)
 753                 Conf_ListenAddress = strdup_warn(DEFAULT_LISTEN_ADDRSTR);
 754
 755         if (!Conf_ListenAddress) {
 756                 Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 757                 exit(1);
 758         }
 759         return true;
 760 } /* Read_Config */
 761
 762
 763 static bool
 764 Check_ArgIsTrue( const char *Arg )
 765 {
 766         if( strcasecmp( Arg, "yes" ) == 0 ) return true;
 767         if( strcasecmp( Arg, "true" ) == 0 ) return true;
 768         if( atoi( Arg ) != 0 ) return true;
 769
 770         return false;
 771 } /* Check_ArgIsTrue */
 772
 773
 774 static unsigned int Handle_MaxNickLength(int Line, const char *Arg)
 775 {
 776         unsigned new;
 777
 778         new = (unsigned) atoi(Arg) + 1;
 779         if (new > CLIENT_NICK_LEN) {
 780                 Config_Error(LOG_WARNING,
 781                              "%s, line %d: Value of \"MaxNickLength\" exceeds %u!",
 782                              NGIRCd_ConfFile, Line, CLIENT_NICK_LEN - 1);
 783                 return CLIENT_NICK_LEN;
 784         }
 785         if (new < 2) {
 786                 Config_Error(LOG_WARNING,
 787                              "%s, line %d: Value of \"MaxNickLength\" must be at least 1!",
 788                              NGIRCd_ConfFile, Line);
 789                 return 2;
 790         }
 791         return new;
 792 } /* Handle_MaxNickLength */
 793
 794
 795 static void
 796 Handle_GLOBAL( int Line, char *Var, char *Arg )
 797 {
 798         struct passwd *pwd;
 799         struct group *grp;
 800         size_t len;
 801
 802         assert( Line > 0 );
 803         assert( Var != NULL );
 804         assert( Arg != NULL );
 805
 806         if( strcasecmp( Var, "Name" ) == 0 ) {
 807                 /* Server name */
 808                 len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
 809                 if (len >= sizeof( Conf_ServerName ))
 810                         Config_Error_TooLong( Line, Var );
 811                 return;
 812         }
 813         if( strcasecmp( Var, "Info" ) == 0 ) {
 814                 /* Info text of server */
 815                 len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
 816                 if (len >= sizeof( Conf_ServerInfo ))
 817                         Config_Error_TooLong ( Line, Var );
 818                 return;
 819         }
 820         if( strcasecmp( Var, "Password" ) == 0 ) {
 821                 /* Global server password */
 822                 len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
 823                 if (len >= sizeof( Conf_ServerPwd ))
 824                         Config_Error_TooLong( Line, Var );
 825                 return;
 826         }
 827         if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
 828                 /* Administrative info #1 */
 829                 len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
 830                 if (len >= sizeof( Conf_ServerAdmin1 ))
 831                         Config_Error_TooLong ( Line, Var );
 832                 return;
 833         }
 834         if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
 835                 /* Administrative info #2 */
 836                 len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
 837                 if (len >= sizeof( Conf_ServerAdmin2 ))
 838                         Config_Error_TooLong ( Line, Var );
 839                 return;
 840         }
 841         if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
 842                 /* Administrative email contact */
 843                 len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
 844                 if (len >= sizeof( Conf_ServerAdminMail ))
 845                         Config_Error_TooLong( Line, Var );
 846                 return;
 847         }
 848
 849         if( strcasecmp( Var, "Ports" ) == 0 ) {
 850                 ports_parse(&Conf_ListenPorts, Line, Arg);
 851                 return;
 852         }
 853         if( strcasecmp( Var, "MotdFile" ) == 0 ) {
 854                 /* "Message of the day" (MOTD) file */
 855                 len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
 856                 if (len >= sizeof( Conf_MotdFile ))
 857                         Config_Error_TooLong( Line, Var );
 858                 return;
 859         }
 860         if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
 861                 /* "Message of the day" phrase (instead of file) */
 862                 len = strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase ));
 863                 if (len >= sizeof( Conf_MotdPhrase ))
 864                         Config_Error_TooLong( Line, Var );
 865                 return;
 866         }
 867         if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
 868                 /* directory for chroot() */
 869                 len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
 870                 if (len >= sizeof( Conf_Chroot ))
 871                         Config_Error_TooLong( Line, Var );
 872                 return;
 873         }
 874         if ( strcasecmp( Var, "PidFile" ) == 0 ) {
 875                 /* name of pidfile */
 876                 len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
 877                 if (len >= sizeof( Conf_PidFile ))
 878                         Config_Error_TooLong( Line, Var );
 879                 return;
 880         }
 881         if( strcasecmp( Var, "ServerUID" ) == 0 ) {
 882                 /* UID the daemon should switch to */
 883                 pwd = getpwnam( Arg );
 884                 if( pwd ) Conf_UID = pwd->pw_uid;
 885                 else {
 886 #ifdef HAVE_ISDIGIT
 887                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 888                         else
 889 #endif
 890                         Conf_UID = (unsigned int)atoi( Arg );
 891                 }
 892                 return;
 893         }
 894         if( strcasecmp( Var, "ServerGID" ) == 0 ) {
 895                 /* GID the daemon should use */
 896                 grp = getgrnam( Arg );
 897                 if( grp ) Conf_GID = grp->gr_gid;
 898                 else {
 899 #ifdef HAVE_ISDIGIT
 900                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
 901                         else
 902 #endif
 903                         Conf_GID = (unsigned int)atoi( Arg );
 904                 }
 905                 return;
 906         }
 907         if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
 908                 /* PING timeout */
 909                 Conf_PingTimeout = atoi( Arg );
 910                 if( Conf_PingTimeout < 5 ) {
 911                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
 912                                                                         NGIRCd_ConfFile, Line );
 913                         Conf_PingTimeout = 5;
 914                 }
 915                 return;
 916         }
 917         if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
 918                 /* PONG timeout */
 919                 Conf_PongTimeout = atoi( Arg );
 920                 if( Conf_PongTimeout < 5 ) {
 921                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
 922                                                                         NGIRCd_ConfFile, Line );
 923                         Conf_PongTimeout = 5;
 924                 }
 925                 return;
 926         }
 927         if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
 928                 /* Seconds between connection attempts to other servers */
 929                 Conf_ConnectRetry = atoi( Arg );
 930                 if( Conf_ConnectRetry < 5 ) {
 931                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
 932                                                                         NGIRCd_ConfFile, Line );
 933                         Conf_ConnectRetry = 5;
 934                 }
 935                 return;
 936         }
 937         if( strcasecmp( Var, "PredefChannelsOnly" ) == 0 ) {
 938                 /* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
 939                 Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
 940                 return;
 941         }
 942         if( strcasecmp( Var, "NoDNS" ) == 0 ) {
 943                 /* don't do reverse dns lookups when clients connect? */
 944                 Conf_NoDNS = Check_ArgIsTrue( Arg );
 945                 return;
 946         }
 947         if (strcasecmp(Var, "NoIdent") == 0) {
 948                 /* don't do IDENT lookups when clients connect? */
 949                 Conf_NoIdent = Check_ArgIsTrue(Arg);
 950 #ifndef IDENTAUTH
 951                 if (!Conf_NoIdent) {
 952                         /* user has enabled ident lookups explicitly, but ... */
 953                         Config_Error(LOG_WARNING,
 954                                 "%s: line %d: NoIdent=False, but ngircd was built without IDENT support",
 955                                 NGIRCd_ConfFile, Line);
 956                 }
 957 #endif
 958                 return;
 959         }
 960 #ifdef WANT_IPV6
 961         /* the default setting for all the WANT_IPV6 special options is 'true' */
 962         if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
 963                 /* connect to other hosts using ipv6, if they have an AAAA record? */
 964                 Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
 965                 return;
 966         }
 967         if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
 968                 /* connect to other hosts using ipv4.
 969                  * again, this can be used for ipv6-only setups */
 970                 Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
 971                 return;
 972         }
 973 #endif
 974         if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
 975                 /* Are IRC operators allowed to use MODE in channels they aren't Op in? */
 976                 Conf_OperCanMode = Check_ArgIsTrue( Arg );
 977                 return;
 978         }
 979         if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
 980                 /* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
 981                 Conf_OperServerMode = Check_ArgIsTrue( Arg );
 982                 return;
 983         }
 984         if(strcasecmp(Var, "AllowRemoteOper") == 0) {
 985                 /* Are remote IRC operators allowed to control this server? */
 986                 Conf_AllowRemoteOper = Check_ArgIsTrue(Arg);
 987                 return;
 988         }
 989         if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
 990                 /* Maximum number of connections. 0 -> "no limit". */
 991 #ifdef HAVE_ISDIGIT
 992                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
 993                 else
 994 #endif
 995                 Conf_MaxConnections = atol( Arg );
 996                 return;
 997         }
 998         if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
 999                 /* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
1000 #ifdef HAVE_ISDIGIT
1001                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
1002                 else
1003 #endif
1004                 Conf_MaxConnectionsIP = atoi( Arg );
1005                 return;
1006         }
1007         if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
1008                 /* Maximum number of channels a user can join. 0 -> "no limit". */
1009 #ifdef HAVE_ISDIGIT
1010                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
1011                 else
1012 #endif
1013                 Conf_MaxJoins = atoi( Arg );
1014                 return;
1015         }
1016         if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
1017                 /* Maximum length of a nick name; must be same on all servers
1018                  * within the IRC network! */
1019                 Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
1020                 return;
1021         }
1022
1023         if( strcasecmp( Var, "Listen" ) == 0 ) {
1024                 /* IP-Address to bind sockets */
1025                 if (Conf_ListenAddress) {
1026                         Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
1027                         return;
1028                 }
1029                 Conf_ListenAddress = strdup_warn(Arg);
1030                 /*
1031                  * if allocation fails, we're in trouble:
1032                  * we cannot ignore the error -- otherwise ngircd
1033                  * would listen on all interfaces.
1034                  */
1035                 if (!Conf_ListenAddress) {
1036                         Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
1037                         exit(1);
1038                 }
1039                 return;
1040         }
1041
1042 #ifdef SSL_SUPPORT
1043         if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
1044                 ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
1045                 return;
1046         }
1047
1048         if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
1049                 assert(Conf_SSLOptions.KeyFile == NULL );
1050                 Conf_SSLOptions.KeyFile = strdup_warn(Arg);
1051                 return;
1052         }
1053         if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
1054                 assert(Conf_SSLOptions.CertFile == NULL );
1055                 Conf_SSLOptions.CertFile = strdup_warn(Arg);
1056                 return;
1057         }
1058
1059         if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
1060                 assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
1061                 if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
1062                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
1063                                                                 NGIRCd_ConfFile, Line, Var, strerror(errno));
1064                 return;
1065         }
1066         if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
1067                 assert(Conf_SSLOptions.DHFile == NULL);
1068                 Conf_SSLOptions.DHFile = strdup_warn( Arg );
1069                 return;
1070         }
1071 #endif
1072         Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
1073                                                                 NGIRCd_ConfFile, Line, Var);
1074 } /* Handle_GLOBAL */
1075
1076
1077 static void
1078 Handle_OPERATOR( int Line, char *Var, char *Arg )
1079 {
1080         unsigned int opercount;
1081         size_t len;
1082         assert( Line > 0 );
1083         assert( Var != NULL );
1084         assert( Arg != NULL );
1085         assert( Conf_Oper_Count > 0 );
1086
1087         if ( Conf_Oper_Count == 0 )
1088                 return;
1089
1090         opercount = Conf_Oper_Count - 1;
1091
1092         if( strcasecmp( Var, "Name" ) == 0 ) {
1093                 /* Name of IRC operator */
1094                 len = strlcpy( Conf_Oper[opercount].name, Arg, sizeof( Conf_Oper[opercount].name ));
1095                 if (len >= sizeof( Conf_Oper[opercount].name ))
1096                                 Config_Error_TooLong( Line, Var );
1097                 return;
1098         }
1099         if( strcasecmp( Var, "Password" ) == 0 ) {
1100                 /* Password of IRC operator */
1101                 len = strlcpy( Conf_Oper[opercount].pwd, Arg, sizeof( Conf_Oper[opercount].pwd ));
1102                 if (len >= sizeof( Conf_Oper[opercount].pwd ))
1103                                 Config_Error_TooLong( Line, Var );
1104                 return;
1105         }
1106         if( strcasecmp( Var, "Mask" ) == 0 ) {
1107                 if (Conf_Oper[opercount].mask) return; /* Hostname already configured */
1108
1109                 Conf_Oper[opercount].mask = strdup_warn( Arg );
1110                 return;
1111         }
1112         Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
1113                                                                 NGIRCd_ConfFile, Line, Var );
1114 } /* Handle_OPERATOR */
1115
1116
1117 static void
1118 Handle_SERVER( int Line, char *Var, char *Arg )
1119 {
1120         long port;
1121         size_t len;
1122
1123         assert( Line > 0 );
1124         assert( Var != NULL );
1125         assert( Arg != NULL );
1126
1127         /* Ignore server block if no space is left in server configuration structure */
1128         if( New_Server_Idx <= NONE ) return;
1129
1130         if( strcasecmp( Var, "Host" ) == 0 ) {
1131                 /* Hostname of the server */
1132                 len = strlcpy( New_Server.host, Arg, sizeof( New_Server.host ));
1133                 if (len >= sizeof( New_Server.host ))
1134                         Config_Error_TooLong ( Line, Var );
1135                 return;
1136         }
1137         if( strcasecmp( Var, "Name" ) == 0 ) {
1138                 /* Name of the server ("Nick"/"ID") */
1139                 len = strlcpy( New_Server.name, Arg, sizeof( New_Server.name ));
1140                 if (len >= sizeof( New_Server.name ))
1141                         Config_Error_TooLong( Line, Var );
1142                 return;
1143         }
1144         if (strcasecmp(Var, "Bind") == 0) {
1145                 if (ng_ipaddr_init(&New_Server.bind_addr, Arg, 0))
1146                         return;
1147
1148                 Config_Error(LOG_ERR, "%s, line %d (section \"Server\"): Can't parse IP address \"%s\"",
1149                                 NGIRCd_ConfFile, Line, Arg);
1150                 return;
1151         }
1152         if( strcasecmp( Var, "MyPassword" ) == 0 ) {
1153                 /* Password of this server which is sent to the peer */
1154                 if (*Arg == ':') {
1155                         Config_Error(LOG_ERR,
1156                                 "%s, line %d (section \"Server\"): MyPassword must not start with ':'!",
1157                                                                                 NGIRCd_ConfFile, Line);
1158                 }
1159                 len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
1160                 if (len >= sizeof( New_Server.pwd_in ))
1161                         Config_Error_TooLong( Line, Var );
1162                 return;
1163         }
1164         if( strcasecmp( Var, "PeerPassword" ) == 0 ) {
1165                 /* Passwort of the peer which must be received */
1166                 len = strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out ));
1167                 if (len >= sizeof( New_Server.pwd_out ))
1168                         Config_Error_TooLong( Line, Var );
1169                 return;
1170         }
1171         if( strcasecmp( Var, "Port" ) == 0 ) {
1172                 /* Port to which this server should connect */
1173                 port = atol( Arg );
1174                 if( port > 0 && port < 0xFFFF )
1175                         New_Server.port = (UINT16)port;
1176                 else
1177                         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
1178                                                                                 NGIRCd_ConfFile, Line, port );
1179                 return;
1180         }
1181 #ifdef SSL_SUPPORT
1182         if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
1183                 New_Server.SSLConnect = Check_ArgIsTrue(Arg);
1184                 return;
1185         }
1186 #endif
1187         if( strcasecmp( Var, "Group" ) == 0 ) {
1188                 /* Server group */
1189 #ifdef HAVE_ISDIGIT
1190                 if( ! isdigit( (int)*Arg ))
1191                         Config_Error_NaN( Line, Var );
1192                 else
1193 #endif
1194                 New_Server.group = atoi( Arg );
1195                 return;
1196         }
1197         if( strcasecmp( Var, "Passive" ) == 0 ) {
1198                 if (Check_ArgIsTrue(Arg))
1199                         New_Server.flags |= CONF_SFLAG_DISABLED;
1200                 return;
1201         }
1202         if (strcasecmp(Var, "ServiceMask") == 0) {
1203                 len = strlcpy(New_Server.svs_mask, ngt_LowerStr(Arg),
1204                               sizeof(New_Server.svs_mask));
1205                 if (len >= sizeof(New_Server.svs_mask))
1206                         Config_Error_TooLong(Line, Var);
1207                 return;
1208         }
1209
1210         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
1211                                                                 NGIRCd_ConfFile, Line, Var );
1212 } /* Handle_SERVER */
1213
1214
1215 static bool
1216 Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
1217 {
1218         size_t size = sizeof(new_chan->name);
1219         char *dest = new_chan->name;
1220
1221         if (!Channel_IsValidName(name)) {
1222                 /*
1223                  * maybe user forgot to add a '#'.
1224                  * This is only here for user convenience.
1225                  */
1226                 *dest = '#';
1227                 --size;
1228                 ++dest;
1229         }
1230         return size > strlcpy(dest, name, size);
1231 }
1232
1233
1234 static void
1235 Handle_CHANNEL(int Line, char *Var, char *Arg)
1236 {
1237         size_t len;
1238         size_t chancount;
1239         struct Conf_Channel *chan;
1240
1241         assert( Line > 0 );
1242         assert( Var != NULL );
1243         assert( Arg != NULL );
1244         assert(Conf_Channel_Count > 0);
1245
1246         chancount = Conf_Channel_Count - 1;
1247
1248         chan = array_alloc(&Conf_Channels, sizeof(*chan), chancount);
1249         if (!chan) {
1250                 Config_Error(LOG_ERR, "Could not allocate memory for predefined channel (%d:%s = %s)", Line, Var, Arg);
1251                 return;
1252         }
1253         if (strcasecmp(Var, "Name") == 0) {
1254                 if (!Handle_Channelname(chan, Arg))
1255                         Config_Error_TooLong(Line, Var);
1256                 return;
1257         }
1258         if (strcasecmp(Var, "Modes") == 0) {
1259                 /* Initial modes */
1260                 len = strlcpy(chan->modes, Arg, sizeof(chan->modes));
1261                 if (len >= sizeof(chan->modes))
1262                         Config_Error_TooLong( Line, Var );
1263                 return;
1264         }
1265         if( strcasecmp( Var, "Topic" ) == 0 ) {
1266                 /* Initial topic */
1267                 len = strlcpy(chan->topic, Arg, sizeof(chan->topic));
1268                 if (len >= sizeof(chan->topic))
1269                         Config_Error_TooLong( Line, Var );
1270                 return;
1271         }
1272         if( strcasecmp( Var, "Key" ) == 0 ) {
1273                 /* Initial Channel Key (mode k) */
1274                 len = strlcpy(chan->key, Arg, sizeof(chan->key));
1275                 if (len >= sizeof(chan->key))
1276                         Config_Error_TooLong(Line, Var);
1277                 return;
1278         }
1279         if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
1280                 /* maximum user limit, mode l */
1281                 chan->maxusers = (unsigned long) atol(Arg);
1282                 if (chan->maxusers == 0)
1283                         Config_Error_NaN(Line, Var);
1284                 return;
1285         }
1286         if (strcasecmp(Var, "KeyFile") == 0) {
1287                 /* channel keys */
1288                 len = strlcpy(chan->keyfile, Arg, sizeof(chan->keyfile));
1289                 if (len >= sizeof(chan->keyfile))
1290                         Config_Error_TooLong(Line, Var);
1291                 return;
1292         }
1293
1294         Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
1295                                                                 NGIRCd_ConfFile, Line, Var );
1296 } /* Handle_CHANNEL */
1297
1298
1299 static bool
1300 Validate_Config(bool Configtest, bool Rehash)
1301 {
1302         /* Validate configuration settings. */
1303
1304 #ifdef DEBUG
1305         int i, servers, servers_once;
1306 #endif
1307         bool config_valid = true;
1308         char *ptr;
1309
1310         /* Validate configured server name, see RFC 2812 section 2.3.1 */
1311         ptr = Conf_ServerName;
1312         do {
1313                 if (*ptr >= 'a' && *ptr <= 'z') continue;
1314                 if (*ptr >= 'A' && *ptr <= 'Z') continue;
1315                 if (*ptr >= '0' && *ptr <= '9') continue;
1316                 if (ptr > Conf_ServerName) {
1317                         if (*ptr == '.' || *ptr == '-')
1318                                 continue;
1319                 }
1320                 Conf_ServerName[0] = '\0';
1321                 break;
1322         } while (*(++ptr));
1323
1324         if (!Conf_ServerName[0]) {
1325                 /* No server name configured! */
1326                 config_valid = false;
1327                 Config_Error(LOG_ALERT,
1328                              "No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
1329                              NGIRCd_ConfFile);
1330                 if (!Configtest && !Rehash) {
1331                         Config_Error(LOG_ALERT,
1332                                      "%s exiting due to fatal errors!",
1333                                      PACKAGE_NAME);
1334                         exit(1);
1335                 }
1336         }
1337
1338         if (Conf_ServerName[0] && !strchr(Conf_ServerName, '.')) {
1339                 /* No dot in server name! */
1340                 config_valid = false;
1341                 Config_Error(LOG_ALERT,
1342                              "Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!",
1343                              NGIRCd_ConfFile);
1344                 if (!Configtest) {
1345                         Config_Error(LOG_ALERT,
1346                                      "%s exiting due to fatal errors!",
1347                                      PACKAGE_NAME);
1348                         exit(1);
1349                 }
1350         }
1351
1352 #ifdef STRICT_RFC
1353         if (!Conf_ServerAdminMail[0]) {
1354                 /* No administrative contact configured! */
1355                 config_valid = false;
1356                 Config_Error(LOG_ALERT,
1357                              "No administrator email address configured in \"%s\" ('AdminEMail')!",
1358                              NGIRCd_ConfFile);
1359                 if (!Configtest) {
1360                         Config_Error(LOG_ALERT,
1361                                      "%s exiting due to fatal errors!",
1362                                      PACKAGE_NAME);
1363                         exit(1);
1364                 }
1365         }
1366 #endif
1367
1368         if (!Conf_ServerAdmin1[0] && !Conf_ServerAdmin2[0]
1369             && !Conf_ServerAdminMail[0]) {
1370                 /* No administrative information configured! */
1371                 Config_Error(LOG_WARNING,
1372                              "No administrative information configured but required by RFC!");
1373         }
1374
1375 #ifdef DEBUG
1376         servers = servers_once = 0;
1377         for (i = 0; i < MAX_SERVERS; i++) {
1378                 if (Conf_Server[i].name[0]) {
1379                         servers++;
1380                         if (Conf_Server[i].flags & CONF_SFLAG_ONCE)
1381                                 servers_once++;
1382                 }
1383         }
1384         Log(LOG_DEBUG,
1385             "Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
1386             Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
1387 #endif
1388
1389         return config_valid;
1390 } /* Validate_Config */
1391
1392
1393 static void
1394 Config_Error_TooLong ( const int Line, const char *Item )
1395 {
1396         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
1397 }
1398
1399
1400 static void
1401 Config_Error_NaN( const int Line, const char *Item )
1402 {
1403         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
1404                                                 NGIRCd_ConfFile, Line, Item );
1405 }
1406
1407
1408 #ifdef PROTOTYPES
1409 static void Config_Error( const int Level, const char *Format, ... )
1410 #else
1411 static void Config_Error( Level, Format, va_alist )
1412 const int Level;
1413 const char *Format;
1414 va_dcl
1415 #endif
1416 {
1417         /* Error! Write to console and/or logfile. */
1418
1419         char msg[MAX_LOG_MSG_LEN];
1420         va_list ap;
1421
1422         assert( Format != NULL );
1423
1424 #ifdef PROTOTYPES
1425         va_start( ap, Format );
1426 #else
1427         va_start( ap );
1428 #endif
1429         vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
1430         va_end( ap );
1431
1432         /* During "normal operations" the log functions of the daemon should
1433          * be used, but during testing of the configuration file, all messages
1434          * should go directly to the console: */
1435         if (Use_Log) Log( Level, "%s", msg );
1436         else puts( msg );
1437 } /* Config_Error */
1438
1439
1440 static void
1441 Init_Server_Struct( CONF_SERVER *Server )
1442 {
1443         /* Initialize server configuration structur to default values */
1444
1445         assert( Server != NULL );
1446
1447         memset( Server, 0, sizeof (CONF_SERVER) );
1448
1449         Server->group = NONE;
1450         Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
1451
1452         if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
1453
1454         Resolve_Init(&Server->res_stat);
1455         Server->conn_id = NONE;
1456         memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
1457 } /* Init_Server_Struct */
1458
1459
1460 /* -eof- */