src/ngircd/conf.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2010 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 "channel.h"
  43 #include "defines.h"
  44 #include "log.h"
  45 #include "match.h"
  46 #include "tool.h"
  47
  48 #include "exp.h"
  49 #include "conf.h"
  50
  51
  52 static bool Use_Log = true, Using_MotdFile = true;
  53 static CONF_SERVER New_Server;
  54 static int New_Server_Idx;
  55
  56 static size_t Conf_Oper_Count;
  57 static size_t Conf_Channel_Count;
  58 static char Conf_MotdFile[FNAME_LEN];
  59
  60 static void Set_Defaults PARAMS(( bool InitServers ));
  61 static bool Read_Config PARAMS(( bool ngircd_starting ));
  62 static bool Validate_Config PARAMS(( bool TestOnly, bool Rehash ));
  63
  64 static void Handle_GLOBAL PARAMS(( int Line, char *Var, char *Arg ));
  65 static void Handle_OPERATOR PARAMS(( int Line, char *Var, char *Arg ));
  66 static void Handle_SERVER PARAMS(( int Line, char *Var, char *Arg ));
  67 static void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
  68
  69 static void Config_Error PARAMS(( const int Level, const char *Format, ... ));
  70
  71 static void Config_Error_NaN PARAMS(( const int LINE, const char *Value ));
  72 static void Config_Error_TooLong PARAMS(( const int LINE, const char *Value ));
  73
  74 static void Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
  75
  76 #ifdef WANT_IPV6
  77 #define DEFAULT_LISTEN_ADDRSTR "::,0.0.0.0"
  78 #else
  79 #define DEFAULT_LISTEN_ADDRSTR "0.0.0.0"
  80 #endif
  81
  82 #ifdef SSL_SUPPORT
  83 struct SSLOptions Conf_SSLOptions;
  84
  85 static void
  86 ConfSSL_Init(void)
  87 {
  88         free(Conf_SSLOptions.KeyFile);
  89         Conf_SSLOptions.KeyFile = NULL;
  90
  91         free(Conf_SSLOptions.CertFile);
  92         Conf_SSLOptions.CertFile = NULL;
  93
  94         free(Conf_SSLOptions.DHFile);
  95         Conf_SSLOptions.DHFile = NULL;
  96         array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
  97 }
  98
  99 static bool
 100 ssl_print_configvar(const char *name, const char *file)
 101 {
 102         FILE *fp;
 103
 104         if (!file) {
 105                 printf("  %s =\n", name);
 106                 return true;
 107         }
 108
 109         fp = fopen(file, "r");
 110         if (fp)
 111                 fclose(fp);
 112         else
 113                 fprintf(stderr, "ERROR: %s \"%s\": %s\n",
 114                         name, file, strerror(errno));
 115
 116         printf("  %s = %s\n", name, file);
 117         return fp != NULL;
 118 }
 119
 120 static bool
 121 ConfSSL_Puts(void)
 122 {
 123         bool ret;
 124
 125         ret = ssl_print_configvar("SSLKeyFile", Conf_SSLOptions.KeyFile);
 126
 127         if (!ssl_print_configvar("SSLCertFile", Conf_SSLOptions.CertFile))
 128                 ret = false;
 129
 130         if (!ssl_print_configvar("SSLDHFile", Conf_SSLOptions.DHFile))
 131                 ret = false;
 132
 133         if (array_bytes(&Conf_SSLOptions.KeyFilePassword))
 134                 puts("  SSLKeyFilePassword = <secret>");
 135
 136         array_free_wipe(&Conf_SSLOptions.KeyFilePassword);
 137
 138         return ret;
 139 }
 140 #endif
 141
 142 static char *
 143 strdup_warn(const char *str)
 144 {
 145         char *ptr = strdup(str);
 146         if (!ptr)
 147                 Config_Error(LOG_ERR, "Could not allocate mem for string: %s", str);
 148         return ptr;
 149 }
 150
 151
 152 static void
 153 ports_puts(array *a)
 154 {
 155         size_t len;
 156         UINT16 *ports;
 157         len = array_length(a, sizeof(UINT16));
 158         if (len--) {
 159                 ports = (UINT16*) array_start(a);
 160                 printf("%u", (unsigned int) *ports);
 161                 while (len--) {
 162                         ports++;
 163                         printf(", %u", (unsigned int) *ports);
 164                 }
 165         }
 166         putc('\n', stdout);
 167 }
 168
 169
 170 static void
 171 ports_parse(array *a, int Line, char *Arg)
 172 {
 173         char *ptr;
 174         int port;
 175         UINT16 port16;
 176
 177         array_trunc(a);
 178
 179         /* Ports on that the server should listen. More port numbers
 180          * must be separated by "," */
 181         ptr = strtok( Arg, "," );
 182         while (ptr) {
 183                 ngt_TrimStr(ptr);
 184                 port = atoi(ptr);
 185                 if (port > 0 && port < 0xFFFF) {
 186                         port16 = (UINT16) port;
 187                         if (!array_catb(a, (char*)&port16, sizeof port16))
 188                                 Config_Error(LOG_ERR, "%s, line %d Could not add port number %ld: %s",
 189                                                         NGIRCd_ConfFile, Line, port, strerror(errno));
 190                 } else {
 191                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!",
 192                                                                         NGIRCd_ConfFile, Line, port );
 193                 }
 194
 195                 ptr = strtok( NULL, "," );
 196         }
 197 }
 198
 199
 200 GLOBAL void
 201 Conf_Init( void )
 202 {
 203         Read_Config( true );
 204         Validate_Config(false, false);
 205 } /* Config_Init */
 206
 207
 208 GLOBAL bool
 209 Conf_Rehash( void )
 210 {
 211         if (!Read_Config(false))
 212                 return false;
 213         Validate_Config(false, true);
 214
 215         /* Update CLIENT structure of local server */
 216         Client_SetInfo(Client_ThisServer(), Conf_ServerInfo);
 217         return true;
 218 } /* Config_Rehash */
 219
 220
 221 static const char*
 222 yesno_to_str(int boolean_value)
 223 {
 224         if (boolean_value)
 225                 return "yes";
 226         return "no";
 227 }
 228
 229
 230 static void
 231 opers_free(void)
 232 {
 233         struct Conf_Oper *op;
 234         size_t len;
 235
 236         len = array_length(&Conf_Opers, sizeof(*op));
 237         op = array_start(&Conf_Opers);
 238         while (len--) {
 239                 free(op->mask);
 240                 op++;
 241         }
 242         array_free(&Conf_Opers);
 243 }
 244
 245 static void
 246 opers_puts(void)
 247 {
 248         struct Conf_Oper *op;
 249         size_t len;
 250
 251         len = array_length(&Conf_Opers, sizeof(*op));
 252         op = array_start(&Conf_Opers);
 253         while (len--) {
 254                 assert(op->name[0]);
 255
 256                 puts("[OPERATOR]");
 257                 printf("  Name = %s\n", op->name);
 258                 printf("  Password = %s\n", op->pwd);
 259                 printf("  Mask = %s\n\n", op->mask ? op->mask : "");
 260                 op++;
 261         }
 262 }
 263
 264
 265 GLOBAL int
 266 Conf_Test( void )
 267 {
 268         /* Read configuration, validate and output it. */
 269
 270         struct passwd *pwd;
 271         struct group *grp;
 272         unsigned int i;
 273         bool config_valid;
 274         size_t predef_channel_count;
 275         struct Conf_Channel *predef_chan;
 276
 277         Use_Log = false;
 278
 279         if (! Read_Config(true))
 280                 return 1;
 281
 282         config_valid = Validate_Config(true, false);
 283
 284         /* If stdin and stdout ("you can read our nice message and we can
 285          * read in your keypress") are valid tty's, wait for a key: */
 286         if( isatty( fileno( stdin )) && isatty( fileno( stdout ))) {
 287                 puts( "OK, press enter to see a dump of your service configuration ..." );
 288                 getchar( );
 289         } else {
 290                 puts( "Ok, dump of your server configuration follows:\n" );
 291         }
 292
 293         puts( "[GLOBAL]" );
 294         printf("  Name = %s\n", Conf_ServerName);
 295         printf("  Info = %s\n", Conf_ServerInfo);
 296 #ifndef PAM
 297         printf("  Password = %s\n", Conf_ServerPwd);
 298 #endif
 299         printf("  WebircPassword = %s\n", Conf_WebircPwd);
 300         printf("  AdminInfo1 = %s\n", Conf_ServerAdmin1);
 301         printf("  AdminInfo2 = %s\n", Conf_ServerAdmin2);
 302         printf("  AdminEMail = %s\n", Conf_ServerAdminMail);
 303         if (Using_MotdFile) {
 304                 printf("  MotdFile = %s\n", Conf_MotdFile);
 305                 printf("  MotdPhrase =\n");
 306         } else {
 307                 printf("  MotdFile = \n");
 308                 printf("  MotdPhrase = %s\n", array_bytes(&Conf_Motd)
 309                        ? (const char*) array_start(&Conf_Motd) : "");
 310         }
 311         printf("  ChrootDir = %s\n", Conf_Chroot);
 312         printf("  PidFile = %s\n", Conf_PidFile);
 313         printf("  Listen = %s\n", Conf_ListenAddress);
 314         fputs("  Ports = ", stdout);
 315         ports_puts(&Conf_ListenPorts);
 316 #ifdef SSL_SUPPORT
 317         fputs("  SSLPorts = ", stdout);
 318         ports_puts(&Conf_SSLOptions.ListenPorts);
 319         if (!ConfSSL_Puts())
 320                 config_valid = false;
 321 #endif
 322
 323         pwd = getpwuid(Conf_UID);
 324         if (pwd)
 325                 printf("  ServerUID = %s\n", pwd->pw_name);
 326         else
 327                 printf("  ServerUID = %ld\n", (long)Conf_UID);
 328         grp = getgrgid(Conf_GID);
 329         if (grp)
 330                 printf("  ServerGID = %s\n", grp->gr_name);
 331         else
 332                 printf("  ServerGID = %ld\n", (long)Conf_GID);
 333 #ifdef SYSLOG
 334         printf("  SyslogFacility = %s\n",
 335                ngt_SyslogFacilityName(Conf_SyslogFacility));
 336 #endif
 337         printf("  PingTimeout = %d\n", Conf_PingTimeout);
 338         printf("  PongTimeout = %d\n", Conf_PongTimeout);
 339         printf("  ConnectRetry = %d\n", Conf_ConnectRetry);
 340         printf("  OperCanUseMode = %s\n", yesno_to_str(Conf_OperCanMode));
 341         printf("  OperServerMode = %s\n", yesno_to_str(Conf_OperServerMode));
 342         printf("  AllowRemoteOper = %s\n", yesno_to_str(Conf_AllowRemoteOper));
 343         printf("  PredefChannelsOnly = %s\n", yesno_to_str(Conf_PredefChannelsOnly));
 344         printf("  DNS = %s\n", yesno_to_str(Conf_DNS));
 345         printf("  Ident = %s\n", yesno_to_str(Conf_Ident));
 346         printf("  PAM = %s\n", yesno_to_str(Conf_PAM));
 347         printf("  ZeroConf = %s\n", yesno_to_str(Conf_ZeroConf));
 348
 349 #ifdef WANT_IPV6
 350         printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
 351         printf("  ConnectIPv6 = %s\n", yesno_to_str(Conf_ConnectIPv4));
 352 #endif
 353         printf("  MaxConnections = %ld\n", Conf_MaxConnections);
 354         printf("  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP);
 355         printf("  MaxJoins = %d\n", Conf_MaxJoins > 0 ? Conf_MaxJoins : -1);
 356         printf("  MaxNickLength = %u\n\n", Conf_MaxNickLength - 1);
 357
 358         opers_puts();
 359
 360         for( i = 0; i < MAX_SERVERS; i++ ) {
 361                 if( ! Conf_Server[i].name[0] ) continue;
 362
 363                 /* Valid "Server" section */
 364                 puts( "[SERVER]" );
 365                 printf( "  Name = %s\n", Conf_Server[i].name );
 366                 printf( "  Host = %s\n", Conf_Server[i].host );
 367                 printf( "  Port = %u\n", (unsigned int)Conf_Server[i].port );
 368 #ifdef SSL_SUPPORT
 369                 printf( "  SSLConnect = %s\n", Conf_Server[i].SSLConnect?"yes":"no");
 370 #endif
 371                 printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
 372                 printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
 373                 printf( "  ServiceMask = %s\n", Conf_Server[i].svs_mask);
 374                 printf( "  Group = %d\n", Conf_Server[i].group );
 375                 printf( "  Passive = %s\n\n", Conf_Server[i].flags & CONF_SFLAG_DISABLED ? "yes" : "no");
 376         }
 377
 378         predef_channel_count = array_length(&Conf_Channels, sizeof(*predef_chan));
 379         predef_chan = array_start(&Conf_Channels);
 380
 381         for (i = 0; i < predef_channel_count; i++, predef_chan++) {
 382                 if (!predef_chan->name[0])
 383                         continue;
 384
 385                 /* Valid "Channel" section */
 386                 puts( "[CHANNEL]" );
 387                 printf("  Name = %s\n", predef_chan->name);
 388                 printf("  Modes = %s\n", predef_chan->modes);
 389                 printf("  Key = %s\n", predef_chan->key);
 390                 printf("  MaxUsers = %lu\n", predef_chan->maxusers);
 391                 printf("  Topic = %s\n", predef_chan->topic);
 392                 printf("  KeyFile = %s\n\n", predef_chan->keyfile);
 393         }
 394
 395         return (config_valid ? 0 : 1);
 396 } /* Conf_Test */
 397
 398
 399 GLOBAL void
 400 Conf_UnsetServer( CONN_ID Idx )
 401 {
 402         /* Set next time for next connection attempt, if this is a server
 403          * link that is (still) configured here. If the server is set as
 404          * "once", delete it from our configuration.
 405          * Non-Server-Connections will be silently ignored. */
 406
 407         int i;
 408         time_t t;
 409
 410         /* Check all our configured servers */
 411         for( i = 0; i < MAX_SERVERS; i++ ) {
 412                 if( Conf_Server[i].conn_id != Idx ) continue;
 413
 414                 /* Gotcha! Mark server configuration as "unused": */
 415                 Conf_Server[i].conn_id = NONE;
 416
 417                 if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 418                         /* Delete configuration here */
 419                         Init_Server_Struct( &Conf_Server[i] );
 420                 } else {
 421                         /* Set time for next connect attempt */
 422                         t = time(NULL);
 423                         if (Conf_Server[i].lasttry < t - Conf_ConnectRetry) {
 424                                 /* The connection has been "long", so we don't
 425                                  * require the next attempt to be delayed. */
 426                                 Conf_Server[i].lasttry =
 427                                         t - Conf_ConnectRetry + RECONNECT_DELAY;
 428                         } else
 429                                 Conf_Server[i].lasttry = t;
 430                 }
 431         }
 432 } /* Conf_UnsetServer */
 433
 434
 435 GLOBAL void
 436 Conf_SetServer( int ConfServer, CONN_ID Idx )
 437 {
 438         /* Set connection for specified configured server */
 439
 440         assert( ConfServer > NONE );
 441         assert( Idx > NONE );
 442
 443         Conf_Server[ConfServer].conn_id = Idx;
 444 } /* Conf_SetServer */
 445
 446
 447 GLOBAL int
 448 Conf_GetServer( CONN_ID Idx )
 449 {
 450         /* Get index of server in configuration structure */
 451
 452         int i = 0;
 453
 454         assert( Idx > NONE );
 455
 456         for( i = 0; i < MAX_SERVERS; i++ ) {
 457                 if( Conf_Server[i].conn_id == Idx ) return i;
 458         }
 459         return NONE;
 460 } /* Conf_GetServer */
 461
 462
 463 GLOBAL bool
 464 Conf_EnableServer( const char *Name, UINT16 Port )
 465 {
 466         /* Enable specified server and adjust port */
 467
 468         int i;
 469
 470         assert( Name != NULL );
 471
 472         for( i = 0; i < MAX_SERVERS; i++ ) {
 473                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 474                         /* Gotcha! Set port and enable server: */
 475                         Conf_Server[i].port = Port;
 476                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 477                         return (Conf_Server[i].port && Conf_Server[i].host[0]);
 478                 }
 479         }
 480         return false;
 481 } /* Conf_EnableServer */
 482
 483
 484 GLOBAL bool
 485 Conf_EnablePassiveServer(const char *Name)
 486 {
 487         /* Enable specified server */
 488         int i;
 489
 490         assert( Name != NULL );
 491         for (i = 0; i < MAX_SERVERS; i++) {
 492                 if ((strcasecmp( Conf_Server[i].name, Name ) == 0) && (Conf_Server[i].port > 0)) {
 493                         /* BINGO! Enable server */
 494                         Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
 495                         return true;
 496                 }
 497         }
 498         return false;
 499 } /* Conf_EnablePassiveServer */
 500
 501
 502 GLOBAL bool
 503 Conf_DisableServer( const char *Name )
 504 {
 505         /* Enable specified server and adjust port */
 506
 507         int i;
 508
 509         assert( Name != NULL );
 510
 511         for( i = 0; i < MAX_SERVERS; i++ ) {
 512                 if( strcasecmp( Conf_Server[i].name, Name ) == 0 ) {
 513                         /* Gotcha! Disable and disconnect server: */
 514                         Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
 515                         if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
 516                         return true;
 517                 }
 518         }
 519         return false;
 520 } /* Conf_DisableServer */
 521
 522
 523 GLOBAL bool
 524 Conf_AddServer( const char *Name, UINT16 Port, const char *Host, const char *MyPwd, const char *PeerPwd )
 525 {
 526         /* Add new server to configuration */
 527
 528         int i;
 529
 530         assert( Name != NULL );
 531         assert( Host != NULL );
 532         assert( MyPwd != NULL );
 533         assert( PeerPwd != NULL );
 534
 535         /* Search unused item in server configuration structure */
 536         for( i = 0; i < MAX_SERVERS; i++ ) {
 537                 /* Is this item used? */
 538                 if( ! Conf_Server[i].name[0] ) break;
 539         }
 540         if( i >= MAX_SERVERS ) return false;
 541
 542         Init_Server_Struct( &Conf_Server[i] );
 543         strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
 544         strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
 545         strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
 546         strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
 547         Conf_Server[i].port = Port;
 548         Conf_Server[i].flags = CONF_SFLAG_ONCE;
 549
 550         return true;
 551 } /* Conf_AddServer */
 552
 553
 554 /**
 555  * Check if the given nick name is an service
 556  */
 557 GLOBAL bool
 558 Conf_IsService(int ConfServer, const char *Nick)
 559 {
 560         return MatchCaseInsensitive(Conf_Server[ConfServer].svs_mask, Nick);
 561 } /* Conf_IsService */
 562
 563
 564 static void
 565 Set_Defaults_Optional(void)
 566 {
 567 #ifdef IDENTAUTH
 568         Conf_Ident = true;
 569 #else
 570         Conf_Ident = false;
 571 #endif
 572 #ifdef PAM
 573         Conf_PAM = true;
 574 #else
 575         Conf_PAM = false;
 576 #endif
 577 #ifdef ZEROCONF
 578         Conf_ZeroConf = true;
 579 #else
 580         Conf_ZeroConf = false;
 581 #endif
 582 }
 583
 584
 585 /**
 586  * Initialize configuration settings with their default values.
 587  */
 588 static void
 589 Set_Defaults(bool InitServers)
 590 {
 591         int i;
 592
 593         strcpy(Conf_ServerName, "");
 594         snprintf(Conf_ServerInfo, sizeof Conf_ServerInfo, "%s %s",
 595                  PACKAGE_NAME, PACKAGE_VERSION);
 596         strcpy(Conf_ServerPwd, "");
 597
 598         strcpy(Conf_ServerAdmin1, "");
 599         strcpy(Conf_ServerAdmin2, "");
 600         strcpy(Conf_ServerAdminMail, "");
 601
 602         strlcpy(Conf_MotdFile, SYSCONFDIR, sizeof(Conf_MotdFile));
 603         strlcat(Conf_MotdFile, MOTD_FILE, sizeof(Conf_MotdFile));
 604
 605         Conf_UID = Conf_GID = 0;
 606         strlcpy(Conf_Chroot, CHROOT_DIR, sizeof(Conf_Chroot));
 607         strlcpy(Conf_PidFile, PID_FILE, sizeof(Conf_PidFile));
 608
 609         free(Conf_ListenAddress);
 610         Conf_ListenAddress = NULL;
 611
 612         Conf_PingTimeout = 120;
 613         Conf_PongTimeout = 20;
 614         Conf_ConnectRetry = 60;
 615         Conf_DNS = true;
 616
 617         Conf_Oper_Count = 0;
 618         Conf_Channel_Count = 0;
 619
 620         Conf_OperCanMode = false;
 621         Conf_OperServerMode = false;
 622         Conf_AllowRemoteOper = false;
 623         Conf_PredefChannelsOnly = false;
 624
 625         Conf_ConnectIPv4 = true;
 626         Conf_ConnectIPv6 = true;
 627
 628         Conf_MaxConnections = 0;
 629         Conf_MaxConnectionsIP = 5;
 630         Conf_MaxJoins = 10;
 631         Conf_MaxNickLength = CLIENT_NICK_LEN_DEFAULT;
 632
 633 #ifdef SYSLOG
 634 #ifdef LOG_LOCAL5
 635         Conf_SyslogFacility = LOG_LOCAL5;
 636 #else
 637         Conf_SyslogFacility = 0;
 638 #endif
 639 #endif
 640         Set_Defaults_Optional();
 641
 642         /* Initialize server configuration structures */
 643         if (InitServers) {
 644                 for (i = 0; i < MAX_SERVERS;
 645                      Init_Server_Struct(&Conf_Server[i++]));
 646         }
 647 } /* Set_Defaults */
 648
 649
 650 static bool
 651 no_listenports(void)
 652 {
 653         size_t cnt = array_bytes(&Conf_ListenPorts);
 654 #ifdef SSL_SUPPORT
 655         cnt += array_bytes(&Conf_SSLOptions.ListenPorts);
 656 #endif
 657         return cnt == 0;
 658 }
 659
 660 static void
 661 Read_Motd(const char *filename)
 662 {
 663         char line[127];
 664         FILE *fp;
 665
 666         if (*filename == '\0')
 667                 return;
 668
 669         fp = fopen(filename, "r");
 670         if (!fp) {
 671                 Log(LOG_WARNING, "Can't read MOTD file \"%s\": %s",
 672                                         filename, strerror(errno));
 673                 return;
 674         }
 675
 676         array_free(&Conf_Motd);
 677         Using_MotdFile = true;
 678
 679         while (fgets(line, (int)sizeof line, fp)) {
 680                 ngt_TrimLastChr( line, '\n');
 681
 682                 /* add text including \0 */
 683                 if (!array_catb(&Conf_Motd, line, strlen(line) + 1)) {
 684                         Log(LOG_WARNING, "Cannot add MOTD text: %s", strerror(errno));
 685                         break;
 686                 }
 687         }
 688         fclose(fp);
 689 }
 690
 691 static bool
 692 Read_Config( bool ngircd_starting )
 693 {
 694         /* Read configuration file. */
 695
 696         char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
 697         const UINT16 defaultport = 6667;
 698         int line, i, n;
 699         FILE *fd;
 700
 701         /* Open configuration file */
 702         fd = fopen( NGIRCd_ConfFile, "r" );
 703         if( ! fd ) {
 704                 /* No configuration file found! */
 705                 Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s",
 706                                         NGIRCd_ConfFile, strerror( errno ));
 707                 if (!ngircd_starting)
 708                         return false;
 709                 Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 710                 exit( 1 );
 711         }
 712
 713         opers_free();
 714         Set_Defaults( ngircd_starting );
 715
 716         Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
 717
 718         /* Clean up server configuration structure: mark all already
 719          * configured servers as "once" so that they are deleted
 720          * after the next disconnect and delete all unused servers.
 721          * And delete all servers which are "duplicates" of servers
 722          * that are already marked as "once" (such servers have been
 723          * created by the last rehash but are now useless). */
 724         for( i = 0; i < MAX_SERVERS; i++ ) {
 725                 if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
 726                 else {
 727                         /* This structure is in use ... */
 728                         if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) {
 729                                 /* Check for duplicates */
 730                                 for( n = 0; n < MAX_SERVERS; n++ ) {
 731                                         if( n == i ) continue;
 732
 733                                         if( Conf_Server[i].conn_id == Conf_Server[n].conn_id ) {
 734                                                 Init_Server_Struct( &Conf_Server[n] );
 735 #ifdef DEBUG
 736                                                 Log(LOG_DEBUG,"Deleted unused duplicate server %d (kept %d).",
 737                                                                                                 n, i );
 738 #endif
 739                                         }
 740                                 }
 741                         } else {
 742                                 /* Mark server as "once" */
 743                                 Conf_Server[i].flags |= CONF_SFLAG_ONCE;
 744                                 Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
 745                         }
 746                 }
 747         }
 748
 749         /* Initialize variables */
 750         line = 0;
 751         strcpy( section, "" );
 752         Init_Server_Struct( &New_Server );
 753         New_Server_Idx = NONE;
 754 #ifdef SSL_SUPPORT
 755         ConfSSL_Init();
 756 #endif
 757         /* Read configuration file */
 758         while( true ) {
 759                 if( ! fgets( str, LINE_LEN, fd )) break;
 760                 ngt_TrimStr( str );
 761                 line++;
 762
 763                 /* Skip comments and empty lines */
 764                 if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
 765
 766                 /* Is this the beginning of a new section? */
 767                 if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' )) {
 768                         strlcpy( section, str, sizeof( section ));
 769                         if( strcasecmp( section, "[GLOBAL]" ) == 0 )
 770                                 continue;
 771
 772                         if( strcasecmp( section, "[SERVER]" ) == 0 ) {
 773                                 /* Check if there is already a server to add */
 774                                 if( New_Server.name[0] ) {
 775                                         /* Copy data to "real" server structure */
 776                                         assert( New_Server_Idx > NONE );
 777                                         Conf_Server[New_Server_Idx] = New_Server;
 778                                 }
 779
 780                                 /* Re-init structure for new server */
 781                                 Init_Server_Struct( &New_Server );
 782
 783                                 /* Search unused item in server configuration structure */
 784                                 for( i = 0; i < MAX_SERVERS; i++ ) {
 785                                         /* Is this item used? */
 786                                         if( ! Conf_Server[i].name[0] ) break;
 787                                 }
 788                                 if( i >= MAX_SERVERS ) {
 789                                         /* Oops, no free item found! */
 790                                         Config_Error( LOG_ERR, "Too many servers configured." );
 791                                         New_Server_Idx = NONE;
 792                                 }
 793                                 else New_Server_Idx = i;
 794                                 continue;
 795                         }
 796                         if (strcasecmp(section, "[CHANNEL]") == 0) {
 797                                 Conf_Channel_Count++;
 798                                 continue;
 799                         }
 800                         if (strcasecmp(section, "[OPERATOR]") == 0) {
 801                                 Conf_Oper_Count++;
 802                                 continue;
 803                         }
 804
 805                         Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
 806                         section[0] = 0x1;
 807                 }
 808                 if( section[0] == 0x1 ) continue;
 809
 810                 /* Split line into variable name and parameters */
 811                 ptr = strchr( str, '=' );
 812                 if( ! ptr ) {
 813                         Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
 814                         continue;
 815                 }
 816                 *ptr = '\0';
 817                 var = str; ngt_TrimStr( var );
 818                 arg = ptr + 1; ngt_TrimStr( arg );
 819
 820                 if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
 821                 else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
 822                 else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
 823                 else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
 824                 else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
 825         }
 826
 827         /* Close configuration file */
 828         fclose( fd );
 829
 830         /* Check if there is still a server to add */
 831         if( New_Server.name[0] ) {
 832                 /* Copy data to "real" server structure */
 833                 assert( New_Server_Idx > NONE );
 834                 Conf_Server[New_Server_Idx] = New_Server;
 835         }
 836
 837         /* not a single listening port? Add default. */
 838         if (no_listenports() &&
 839                 !array_copyb(&Conf_ListenPorts, (char*) &defaultport, sizeof defaultport))
 840         {
 841                 Config_Error(LOG_ALERT, "Could not add default listening Port %u: %s",
 842                                         (unsigned int) defaultport, strerror(errno));
 843
 844                 exit(1);
 845         }
 846
 847         if (!Conf_ListenAddress)
 848                 Conf_ListenAddress = strdup_warn(DEFAULT_LISTEN_ADDRSTR);
 849
 850         if (!Conf_ListenAddress) {
 851                 Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
 852                 exit(1);
 853         }
 854
 855         /* No MOTD phrase configured? (re)try motd file. */
 856         if (array_bytes(&Conf_Motd) == 0)
 857                 Read_Motd(Conf_MotdFile);
 858         return true;
 859 } /* Read_Config */
 860
 861
 862 static bool
 863 Check_ArgIsTrue( const char *Arg )
 864 {
 865         if( strcasecmp( Arg, "yes" ) == 0 ) return true;
 866         if( strcasecmp( Arg, "true" ) == 0 ) return true;
 867         if( atoi( Arg ) != 0 ) return true;
 868
 869         return false;
 870 } /* Check_ArgIsTrue */
 871
 872
 873 static unsigned int
 874 Handle_MaxNickLength(int Line, const char *Arg)
 875 {
 876         unsigned new;
 877
 878         new = (unsigned) atoi(Arg) + 1;
 879         if (new > CLIENT_NICK_LEN) {
 880                 Config_Error(LOG_WARNING,
 881                              "%s, line %d: Value of \"MaxNickLength\" exceeds %u!",
 882                              NGIRCd_ConfFile, Line, CLIENT_NICK_LEN - 1);
 883                 return CLIENT_NICK_LEN;
 884         }
 885         if (new < 2) {
 886                 Config_Error(LOG_WARNING,
 887                              "%s, line %d: Value of \"MaxNickLength\" must be at least 1!",
 888                              NGIRCd_ConfFile, Line);
 889                 return 2;
 890         }
 891         return new;
 892 } /* Handle_MaxNickLength */
 893
 894
 895 static void
 896 WarnIdent(int UNUSED Line)
 897 {
 898 #ifndef IDENTAUTH
 899         if (Conf_Ident) {
 900                 /* user has enabled ident lookups explicitly, but ... */
 901                 Config_Error(LOG_WARNING,
 902                         "%s: line %d: %s=True, but ngircd was built without support",
 903                         NGIRCd_ConfFile, Line, "Ident");
 904         }
 905 #endif
 906 }
 907
 908 static void
 909 WarnPAM(int UNUSED Line)
 910 {
 911 #ifndef PAM
 912         if (Conf_PAM) {
 913                 Config_Error(LOG_WARNING,
 914                         "%s: line %d: %s=True, but ngircd was built without support",
 915                         NGIRCd_ConfFile, Line, "PAM");
 916         }
 917 #endif
 918 }
 919
 920 static bool
 921 CheckLegacyNoOption(const char *Var, const char *Arg)
 922 {
 923         if( strcasecmp( Var, "NoDNS" ) == 0 ) {
 924                 Conf_DNS = !Check_ArgIsTrue( Arg );
 925                 return true;
 926         }
 927         if (strcasecmp(Var, "NoIdent") == 0) {
 928                 Conf_Ident = !Check_ArgIsTrue(Arg);
 929                 return true;
 930         }
 931         if(strcasecmp(Var, "NoPAM") == 0) {
 932                 Conf_PAM = !Check_ArgIsTrue(Arg);
 933                 return true;
 934         }
 935         if(strcasecmp(Var, "NoZeroConf") == 0) {
 936                 Conf_ZeroConf = !Check_ArgIsTrue(Arg);
 937                 return true;
 938         }
 939         return false;
 940 }
 941
 942 static const char *
 943 NoNo(const char *str)
 944 {
 945         assert(strncasecmp("no", str, 2) == 0 && str[2]);
 946         return str + 2;
 947 }
 948
 949 static const char *
 950 InvertArg(const char *arg)
 951 {
 952         return yesno_to_str(!Check_ArgIsTrue(arg));
 953 }
 954
 955 static void
 956 Handle_GLOBAL( int Line, char *Var, char *Arg )
 957 {
 958         struct passwd *pwd;
 959         struct group *grp;
 960         size_t len;
 961
 962         assert( Line > 0 );
 963         assert( Var != NULL );
 964         assert( Arg != NULL );
 965
 966         if( strcasecmp( Var, "Name" ) == 0 ) {
 967                 /* Server name */
 968                 len = strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName ));
 969                 if (len >= sizeof( Conf_ServerName ))
 970                         Config_Error_TooLong( Line, Var );
 971                 return;
 972         }
 973         if( strcasecmp( Var, "Info" ) == 0 ) {
 974                 /* Info text of server */
 975                 len = strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo ));
 976                 if (len >= sizeof( Conf_ServerInfo ))
 977                         Config_Error_TooLong ( Line, Var );
 978                 return;
 979         }
 980         if( strcasecmp( Var, "Password" ) == 0 ) {
 981                 /* Global server password */
 982                 len = strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd ));
 983                 if (len >= sizeof( Conf_ServerPwd ))
 984                         Config_Error_TooLong( Line, Var );
 985                 return;
 986         }
 987         if (strcasecmp(Var, "WebircPassword") == 0) {
 988                 /* Password required for WEBIRC command */
 989                 len = strlcpy(Conf_WebircPwd, Arg, sizeof(Conf_WebircPwd));
 990                 if (len >= sizeof(Conf_WebircPwd))
 991                         Config_Error_TooLong(Line, Var);
 992                 return;
 993         }
 994         if( strcasecmp( Var, "AdminInfo1" ) == 0 ) {
 995                 /* Administrative info #1 */
 996                 len = strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 ));
 997                 if (len >= sizeof( Conf_ServerAdmin1 ))
 998                         Config_Error_TooLong ( Line, Var );
 999                 return;
1000         }
1001         if( strcasecmp( Var, "AdminInfo2" ) == 0 ) {
1002                 /* Administrative info #2 */
1003                 len = strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 ));
1004                 if (len >= sizeof( Conf_ServerAdmin2 ))
1005                         Config_Error_TooLong ( Line, Var );
1006                 return;
1007         }
1008         if( strcasecmp( Var, "AdminEMail" ) == 0 ) {
1009                 /* Administrative email contact */
1010                 len = strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail ));
1011                 if (len >= sizeof( Conf_ServerAdminMail ))
1012                         Config_Error_TooLong( Line, Var );
1013                 return;
1014         }
1015
1016         if( strcasecmp( Var, "Ports" ) == 0 ) {
1017                 ports_parse(&Conf_ListenPorts, Line, Arg);
1018                 return;
1019         }
1020         if( strcasecmp( Var, "MotdFile" ) == 0 ) {
1021                 len = strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile ));
1022                 if (len >= sizeof( Conf_MotdFile ))
1023                         Config_Error_TooLong( Line, Var );
1024                 Read_Motd(Arg);
1025                 return;
1026         }
1027         if( strcasecmp( Var, "MotdPhrase" ) == 0 ) {
1028                 /* "Message of the day" phrase (instead of file) */
1029                 len = strlen(Arg);
1030                 if (len == 0)
1031                         return;
1032                 if (len >= LINE_LEN) {
1033                         Config_Error_TooLong( Line, Var );
1034                         return;
1035                 }
1036                 if (!array_copyb(&Conf_Motd, Arg, len + 1))
1037                         Config_Error(LOG_WARNING, "%s, line %d: Could not append MotdPhrase: %s",
1038                                                         NGIRCd_ConfFile, Line, strerror(errno));
1039                 Using_MotdFile = false;
1040                 return;
1041         }
1042         if( strcasecmp( Var, "ChrootDir" ) == 0 ) {
1043                 /* directory for chroot() */
1044                 len = strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot ));
1045                 if (len >= sizeof( Conf_Chroot ))
1046                         Config_Error_TooLong( Line, Var );
1047                 return;
1048         }
1049         if ( strcasecmp( Var, "PidFile" ) == 0 ) {
1050                 /* name of pidfile */
1051                 len = strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile ));
1052                 if (len >= sizeof( Conf_PidFile ))
1053                         Config_Error_TooLong( Line, Var );
1054                 return;
1055         }
1056         if( strcasecmp( Var, "ServerUID" ) == 0 ) {
1057                 /* UID the daemon should switch to */
1058                 pwd = getpwnam( Arg );
1059                 if( pwd ) Conf_UID = pwd->pw_uid;
1060                 else {
1061 #ifdef HAVE_ISDIGIT
1062                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
1063                         else
1064 #endif
1065                         Conf_UID = (unsigned int)atoi( Arg );
1066                 }
1067                 return;
1068         }
1069         if( strcasecmp( Var, "ServerGID" ) == 0 ) {
1070                 /* GID the daemon should use */
1071                 grp = getgrnam( Arg );
1072                 if( grp ) Conf_GID = grp->gr_gid;
1073                 else {
1074 #ifdef HAVE_ISDIGIT
1075                         if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
1076                         else
1077 #endif
1078                         Conf_GID = (unsigned int)atoi( Arg );
1079                 }
1080                 return;
1081         }
1082         if( strcasecmp( Var, "PingTimeout" ) == 0 ) {
1083                 /* PING timeout */
1084                 Conf_PingTimeout = atoi( Arg );
1085                 if( Conf_PingTimeout < 5 ) {
1086                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!",
1087                                                                         NGIRCd_ConfFile, Line );
1088                         Conf_PingTimeout = 5;
1089                 }
1090                 return;
1091         }
1092         if( strcasecmp( Var, "PongTimeout" ) == 0 ) {
1093                 /* PONG timeout */
1094                 Conf_PongTimeout = atoi( Arg );
1095                 if( Conf_PongTimeout < 5 ) {
1096                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!",
1097                                                                         NGIRCd_ConfFile, Line );
1098                         Conf_PongTimeout = 5;
1099                 }
1100                 return;
1101         }
1102         if( strcasecmp( Var, "ConnectRetry" ) == 0 ) {
1103                 /* Seconds between connection attempts to other servers */
1104                 Conf_ConnectRetry = atoi( Arg );
1105                 if( Conf_ConnectRetry < 5 ) {
1106                         Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!",
1107                                                                         NGIRCd_ConfFile, Line );
1108                         Conf_ConnectRetry = 5;
1109                 }
1110                 return;
1111         }
1112         if( strcasecmp( Var, "PredefChannelsOnly" ) == 0 ) {
1113                 /* Should we only allow pre-defined-channels? (i.e. users cannot create their own channels) */
1114                 Conf_PredefChannelsOnly = Check_ArgIsTrue( Arg );
1115                 return;
1116         }
1117
1118         if (CheckLegacyNoOption(Var, Arg)) {
1119                 Config_Error(LOG_WARNING, "%s, line %d: \"No\"-Prefix has been removed, use "
1120                                 "\"%s = %s\" instead",
1121                                         NGIRCd_ConfFile, Line, NoNo(Var), InvertArg(Arg));
1122                 if (strcasecmp(Var, "NoIdent") == 0)
1123                         WarnIdent(Line);
1124                 else if (strcasecmp(Var, "NoPam") == 0)
1125                         WarnPAM(Line);
1126                 return;
1127         }
1128         if( strcasecmp( Var, "DNS" ) == 0 ) {
1129                 /* do reverse dns lookups when clients connect? */
1130                 Conf_DNS = Check_ArgIsTrue( Arg );
1131                 return;
1132         }
1133         if (strcasecmp(Var, "Ident") == 0) {
1134                 /* do IDENT lookups when clients connect? */
1135                 Conf_Ident = Check_ArgIsTrue(Arg);
1136                 WarnIdent(Line);
1137                 return;
1138         }
1139         if(strcasecmp(Var, "PAM") == 0) {
1140                 /* use PAM library to authenticate users */
1141                 Conf_PAM = Check_ArgIsTrue(Arg);
1142                 WarnPAM(Line);
1143                 return;
1144         }
1145         if(strcasecmp(Var, "ZeroConf") == 0) {
1146                 /* register services using ZeroConf */
1147                 Conf_ZeroConf = Check_ArgIsTrue(Arg);
1148                 return;
1149         }
1150 #ifdef WANT_IPV6
1151         /* the default setting for all the WANT_IPV6 special options is 'true' */
1152         if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {
1153                 /* connect to other hosts using ipv6, if they have an AAAA record? */
1154                 Conf_ConnectIPv6 = Check_ArgIsTrue( Arg );
1155                 return;
1156         }
1157         if( strcasecmp( Var, "ConnectIPv4" ) == 0 ) {
1158                 /* connect to other hosts using ipv4.
1159                  * again, this can be used for ipv6-only setups */
1160                 Conf_ConnectIPv4 = Check_ArgIsTrue( Arg );
1161                 return;
1162         }
1163 #endif
1164         if( strcasecmp( Var, "OperCanUseMode" ) == 0 ) {
1165                 /* Are IRC operators allowed to use MODE in channels they aren't Op in? */
1166                 Conf_OperCanMode = Check_ArgIsTrue( Arg );
1167                 return;
1168         }
1169         if( strcasecmp( Var, "OperServerMode" ) == 0 ) {
1170                 /* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
1171                 Conf_OperServerMode = Check_ArgIsTrue( Arg );
1172                 return;
1173         }
1174         if(strcasecmp(Var, "AllowRemoteOper") == 0) {
1175                 /* Are remote IRC operators allowed to control this server? */
1176                 Conf_AllowRemoteOper = Check_ArgIsTrue(Arg);
1177                 return;
1178         }
1179         if( strcasecmp( Var, "MaxConnections" ) == 0 ) {
1180                 /* Maximum number of connections. 0 -> "no limit". */
1181 #ifdef HAVE_ISDIGIT
1182                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
1183                 else
1184 #endif
1185                 Conf_MaxConnections = atol( Arg );
1186                 return;
1187         }
1188         if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 ) {
1189                 /* Maximum number of simultaneous connections from one IP. 0 -> "no limit" */
1190 #ifdef HAVE_ISDIGIT
1191                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
1192                 else
1193 #endif
1194                 Conf_MaxConnectionsIP = atoi( Arg );
1195                 return;
1196         }
1197         if( strcasecmp( Var, "MaxJoins" ) == 0 ) {
1198                 /* Maximum number of channels a user can join. 0 -> "no limit". */
1199 #ifdef HAVE_ISDIGIT
1200                 if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
1201                 else
1202 #endif
1203                 Conf_MaxJoins = atoi( Arg );
1204                 return;
1205         }
1206         if( strcasecmp( Var, "MaxNickLength" ) == 0 ) {
1207                 /* Maximum length of a nick name; must be same on all servers
1208                  * within the IRC network! */
1209                 Conf_MaxNickLength = Handle_MaxNickLength(Line, Arg);
1210                 return;
1211         }
1212
1213         if( strcasecmp( Var, "Listen" ) == 0 ) {
1214                 /* IP-Address to bind sockets */
1215                 if (Conf_ListenAddress) {
1216                         Config_Error(LOG_ERR, "Multiple Listen= options, ignoring: %s", Arg);
1217                         return;
1218                 }
1219                 Conf_ListenAddress = strdup_warn(Arg);
1220                 /*
1221                  * if allocation fails, we're in trouble:
1222                  * we cannot ignore the error -- otherwise ngircd
1223                  * would listen on all interfaces.
1224                  */
1225                 if (!Conf_ListenAddress) {
1226                         Config_Error(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
1227                         exit(1);
1228                 }
1229                 return;
1230         }
1231
1232 #ifdef SSL_SUPPORT
1233         if( strcasecmp( Var, "SSLPorts" ) == 0 ) {
1234                 ports_parse(&Conf_SSLOptions.ListenPorts, Line, Arg);
1235                 return;
1236         }
1237
1238         if( strcasecmp( Var, "SSLKeyFile" ) == 0 ) {
1239                 assert(Conf_SSLOptions.KeyFile == NULL );
1240                 Conf_SSLOptions.KeyFile = strdup_warn(Arg);
1241                 return;
1242         }
1243         if( strcasecmp( Var, "SSLCertFile" ) == 0 ) {
1244                 assert(Conf_SSLOptions.CertFile == NULL );
1245                 Conf_SSLOptions.CertFile = strdup_warn(Arg);
1246                 return;
1247         }
1248
1249         if( strcasecmp( Var, "SSLKeyFilePassword" ) == 0 ) {
1250                 assert(array_bytes(&Conf_SSLOptions.KeyFilePassword) == 0);
1251                 if (!array_copys(&Conf_SSLOptions.KeyFilePassword, Arg))
1252                         Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Could not copy %s: %s!",
1253                                                                 NGIRCd_ConfFile, Line, Var, strerror(errno));
1254                 return;
1255         }
1256         if( strcasecmp( Var, "SSLDHFile" ) == 0 ) {
1257                 assert(Conf_SSLOptions.DHFile == NULL);
1258                 Conf_SSLOptions.DHFile = strdup_warn( Arg );
1259                 return;
1260         }
1261 #endif
1262 #ifdef SYSLOG
1263         if (strcasecmp(Var, "SyslogFacility") == 0) {
1264                 Conf_SyslogFacility = ngt_SyslogFacilityID(Arg,
1265                                                            Conf_SyslogFacility);
1266                 return;
1267         }
1268 #endif
1269         Config_Error(LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!",
1270                                                                 NGIRCd_ConfFile, Line, Var);
1271 } /* Handle_GLOBAL */
1272
1273
1274 static void
1275 Handle_OPERATOR( int Line, char *Var, char *Arg )
1276 {
1277         size_t len;
1278         struct Conf_Oper *op;
1279
1280         assert( Line > 0 );
1281         assert( Var != NULL );
1282         assert( Arg != NULL );
1283         assert( Conf_Oper_Count > 0 );
1284
1285         op = array_alloc(&Conf_Opers, sizeof(*op), Conf_Oper_Count - 1);
1286         if (!op) {
1287                 Config_Error(LOG_ERR, "Could not allocate memory for operator (%d:%s = %s)", Line, Var, Arg);
1288                 return;
1289         }
1290
1291         if (strcasecmp(Var, "Name") == 0) {
1292                 /* Name of IRC operator */
1293                 len = strlcpy(op->name, Arg, sizeof(op->name));
1294                 if (len >= sizeof(op->name))
1295                                 Config_Error_TooLong(Line, Var);
1296                 return;
1297         }
1298         if (strcasecmp(Var, "Password") == 0) {
1299                 /* Password of IRC operator */
1300                 len = strlcpy(op->pwd, Arg, sizeof(op->pwd));
1301                 if (len >= sizeof(op->pwd))
1302                                 Config_Error_TooLong(Line, Var);
1303                 return;
1304         }
1305         if (strcasecmp(Var, "Mask") == 0) {
1306                 if (op->mask)
1307                         return; /* Hostname already configured */
1308                 op->mask = strdup_warn( Arg );
1309                 return;
1310         }
1311         Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!",
1312                                                                 NGIRCd_ConfFile, Line, Var );
1313 } /* Handle_OPERATOR */
1314
1315
1316 static void
1317 Handle_SERVER( int Line, char *Var, char *Arg )
1318 {
1319         long port;
1320         size_t len;
1321
1322         assert( Line > 0 );
1323         assert( Var != NULL );
1324         assert( Arg != NULL );
1325
1326         /* Ignore server block if no space is left in server configuration structure */
1327         if( New_Server_Idx <= NONE ) return;
1328
1329         if( strcasecmp( Var, "Host" ) == 0 ) {
1330                 /* Hostname of the server */
1331                 len = strlcpy( New_Server.host, Arg, sizeof( New_Server.host ));
1332                 if (len >= sizeof( New_Server.host ))
1333                         Config_Error_TooLong ( Line, Var );
1334                 return;
1335         }
1336         if( strcasecmp( Var, "Name" ) == 0 ) {
1337                 /* Name of the server ("Nick"/"ID") */
1338                 len = strlcpy( New_Server.name, Arg, sizeof( New_Server.name ));
1339                 if (len >= sizeof( New_Server.name ))
1340                         Config_Error_TooLong( Line, Var );
1341                 return;
1342         }
1343         if (strcasecmp(Var, "Bind") == 0) {
1344                 if (ng_ipaddr_init(&New_Server.bind_addr, Arg, 0))
1345                         return;
1346
1347                 Config_Error(LOG_ERR, "%s, line %d (section \"Server\"): Can't parse IP address \"%s\"",
1348                                 NGIRCd_ConfFile, Line, Arg);
1349                 return;
1350         }
1351         if( strcasecmp( Var, "MyPassword" ) == 0 ) {
1352                 /* Password of this server which is sent to the peer */
1353                 if (*Arg == ':') {
1354                         Config_Error(LOG_ERR,
1355                                 "%s, line %d (section \"Server\"): MyPassword must not start with ':'!",
1356                                                                                 NGIRCd_ConfFile, Line);
1357                 }
1358                 len = strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in ));
1359                 if (len >= sizeof( New_Server.pwd_in ))
1360                         Config_Error_TooLong( Line, Var );
1361                 return;
1362         }
1363         if( strcasecmp( Var, "PeerPassword" ) == 0 ) {
1364                 /* Passwort of the peer which must be received */
1365                 len = strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out ));
1366                 if (len >= sizeof( New_Server.pwd_out ))
1367                         Config_Error_TooLong( Line, Var );
1368                 return;
1369         }
1370         if( strcasecmp( Var, "Port" ) == 0 ) {
1371                 /* Port to which this server should connect */
1372                 port = atol( Arg );
1373                 if( port > 0 && port < 0xFFFF )
1374                         New_Server.port = (UINT16)port;
1375                 else
1376                         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!",
1377                                                                                 NGIRCd_ConfFile, Line, port );
1378                 return;
1379         }
1380 #ifdef SSL_SUPPORT
1381         if( strcasecmp( Var, "SSLConnect" ) == 0 ) {
1382                 New_Server.SSLConnect = Check_ArgIsTrue(Arg);
1383                 return;
1384         }
1385 #endif
1386         if( strcasecmp( Var, "Group" ) == 0 ) {
1387                 /* Server group */
1388 #ifdef HAVE_ISDIGIT
1389                 if( ! isdigit( (int)*Arg ))
1390                         Config_Error_NaN( Line, Var );
1391                 else
1392 #endif
1393                 New_Server.group = atoi( Arg );
1394                 return;
1395         }
1396         if( strcasecmp( Var, "Passive" ) == 0 ) {
1397                 if (Check_ArgIsTrue(Arg))
1398                         New_Server.flags |= CONF_SFLAG_DISABLED;
1399                 return;
1400         }
1401         if (strcasecmp(Var, "ServiceMask") == 0) {
1402                 len = strlcpy(New_Server.svs_mask, ngt_LowerStr(Arg),
1403                               sizeof(New_Server.svs_mask));
1404                 if (len >= sizeof(New_Server.svs_mask))
1405                         Config_Error_TooLong(Line, Var);
1406                 return;
1407         }
1408
1409         Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!",
1410                                                                 NGIRCd_ConfFile, Line, Var );
1411 } /* Handle_SERVER */
1412
1413
1414 static bool
1415 Handle_Channelname(struct Conf_Channel *new_chan, const char *name)
1416 {
1417         size_t size = sizeof(new_chan->name);
1418         char *dest = new_chan->name;
1419
1420         if (!Channel_IsValidName(name)) {
1421                 /*
1422                  * maybe user forgot to add a '#'.
1423                  * This is only here for user convenience.
1424                  */
1425                 *dest = '#';
1426                 --size;
1427                 ++dest;
1428         }
1429         return size > strlcpy(dest, name, size);
1430 }
1431
1432
1433 static void
1434 Handle_CHANNEL(int Line, char *Var, char *Arg)
1435 {
1436         size_t len;
1437         size_t chancount;
1438         struct Conf_Channel *chan;
1439
1440         assert( Line > 0 );
1441         assert( Var != NULL );
1442         assert( Arg != NULL );
1443         assert(Conf_Channel_Count > 0);
1444
1445         chancount = Conf_Channel_Count - 1;
1446
1447         chan = array_alloc(&Conf_Channels, sizeof(*chan), chancount);
1448         if (!chan) {
1449                 Config_Error(LOG_ERR, "Could not allocate memory for predefined channel (%d:%s = %s)", Line, Var, Arg);
1450                 return;
1451         }
1452         if (strcasecmp(Var, "Name") == 0) {
1453                 if (!Handle_Channelname(chan, Arg))
1454                         Config_Error_TooLong(Line, Var);
1455                 return;
1456         }
1457         if (strcasecmp(Var, "Modes") == 0) {
1458                 /* Initial modes */
1459                 len = strlcpy(chan->modes, Arg, sizeof(chan->modes));
1460                 if (len >= sizeof(chan->modes))
1461                         Config_Error_TooLong( Line, Var );
1462                 return;
1463         }
1464         if( strcasecmp( Var, "Topic" ) == 0 ) {
1465                 /* Initial topic */
1466                 len = strlcpy(chan->topic, Arg, sizeof(chan->topic));
1467                 if (len >= sizeof(chan->topic))
1468                         Config_Error_TooLong( Line, Var );
1469                 return;
1470         }
1471         if( strcasecmp( Var, "Key" ) == 0 ) {
1472                 /* Initial Channel Key (mode k) */
1473                 len = strlcpy(chan->key, Arg, sizeof(chan->key));
1474                 if (len >= sizeof(chan->key))
1475                         Config_Error_TooLong(Line, Var);
1476                 return;
1477         }
1478         if( strcasecmp( Var, "MaxUsers" ) == 0 ) {
1479                 /* maximum user limit, mode l */
1480                 chan->maxusers = (unsigned long) atol(Arg);
1481                 if (chan->maxusers == 0)
1482                         Config_Error_NaN(Line, Var);
1483                 return;
1484         }
1485         if (strcasecmp(Var, "KeyFile") == 0) {
1486                 /* channel keys */
1487                 len = strlcpy(chan->keyfile, Arg, sizeof(chan->keyfile));
1488                 if (len >= sizeof(chan->keyfile))
1489                         Config_Error_TooLong(Line, Var);
1490                 return;
1491         }
1492
1493         Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!",
1494                                                                 NGIRCd_ConfFile, Line, Var );
1495 } /* Handle_CHANNEL */
1496
1497
1498 static bool
1499 Validate_Config(bool Configtest, bool Rehash)
1500 {
1501         /* Validate configuration settings. */
1502
1503 #ifdef DEBUG
1504         int i, servers, servers_once;
1505 #endif
1506         bool config_valid = true;
1507         char *ptr;
1508
1509         /* Validate configured server name, see RFC 2812 section 2.3.1 */
1510         ptr = Conf_ServerName;
1511         do {
1512                 if (*ptr >= 'a' && *ptr <= 'z') continue;
1513                 if (*ptr >= 'A' && *ptr <= 'Z') continue;
1514                 if (*ptr >= '0' && *ptr <= '9') continue;
1515                 if (ptr > Conf_ServerName) {
1516                         if (*ptr == '.' || *ptr == '-')
1517                                 continue;
1518                 }
1519                 Conf_ServerName[0] = '\0';
1520                 break;
1521         } while (*(++ptr));
1522
1523         if (!Conf_ServerName[0]) {
1524                 /* No server name configured! */
1525                 config_valid = false;
1526                 Config_Error(LOG_ALERT,
1527                              "No (valid) server name configured in \"%s\" (section 'Global': 'Name')!",
1528                              NGIRCd_ConfFile);
1529                 if (!Configtest && !Rehash) {
1530                         Config_Error(LOG_ALERT,
1531                                      "%s exiting due to fatal errors!",
1532                                      PACKAGE_NAME);
1533                         exit(1);
1534                 }
1535         }
1536
1537         if (Conf_ServerName[0] && !strchr(Conf_ServerName, '.')) {
1538                 /* No dot in server name! */
1539                 config_valid = false;
1540                 Config_Error(LOG_ALERT,
1541                              "Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!",
1542                              NGIRCd_ConfFile);
1543                 if (!Configtest) {
1544                         Config_Error(LOG_ALERT,
1545                                      "%s exiting due to fatal errors!",
1546                                      PACKAGE_NAME);
1547                         exit(1);
1548                 }
1549         }
1550
1551 #ifdef STRICT_RFC
1552         if (!Conf_ServerAdminMail[0]) {
1553                 /* No administrative contact configured! */
1554                 config_valid = false;
1555                 Config_Error(LOG_ALERT,
1556                              "No administrator email address configured in \"%s\" ('AdminEMail')!",
1557                              NGIRCd_ConfFile);
1558                 if (!Configtest) {
1559                         Config_Error(LOG_ALERT,
1560                                      "%s exiting due to fatal errors!",
1561                                      PACKAGE_NAME);
1562                         exit(1);
1563                 }
1564         }
1565 #endif
1566
1567         if (!Conf_ServerAdmin1[0] && !Conf_ServerAdmin2[0]
1568             && !Conf_ServerAdminMail[0]) {
1569                 /* No administrative information configured! */
1570                 Config_Error(LOG_WARNING,
1571                              "No administrative information configured but required by RFC!");
1572         }
1573
1574 #ifdef PAM
1575         if (Conf_ServerPwd[0])
1576                 Config_Error(LOG_ERR,
1577                              "This server uses PAM, \"Password\" will be ignored!");
1578 #endif
1579
1580 #ifdef DEBUG
1581         servers = servers_once = 0;
1582         for (i = 0; i < MAX_SERVERS; i++) {
1583                 if (Conf_Server[i].name[0]) {
1584                         servers++;
1585                         if (Conf_Server[i].flags & CONF_SFLAG_ONCE)
1586                                 servers_once++;
1587                 }
1588         }
1589         Log(LOG_DEBUG,
1590             "Configuration: Operators=%d, Servers=%d[%d], Channels=%d",
1591             Conf_Oper_Count, servers, servers_once, Conf_Channel_Count);
1592 #endif
1593
1594         return config_valid;
1595 } /* Validate_Config */
1596
1597
1598 static void
1599 Config_Error_TooLong ( const int Line, const char *Item )
1600 {
1601         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
1602 }
1603
1604
1605 static void
1606 Config_Error_NaN( const int Line, const char *Item )
1607 {
1608         Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!",
1609                                                 NGIRCd_ConfFile, Line, Item );
1610 }
1611
1612
1613 #ifdef PROTOTYPES
1614 static void Config_Error( const int Level, const char *Format, ... )
1615 #else
1616 static void Config_Error( Level, Format, va_alist )
1617 const int Level;
1618 const char *Format;
1619 va_dcl
1620 #endif
1621 {
1622         /* Error! Write to console and/or logfile. */
1623
1624         char msg[MAX_LOG_MSG_LEN];
1625         va_list ap;
1626
1627         assert( Format != NULL );
1628
1629 #ifdef PROTOTYPES
1630         va_start( ap, Format );
1631 #else
1632         va_start( ap );
1633 #endif
1634         vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
1635         va_end( ap );
1636
1637         /* During "normal operations" the log functions of the daemon should
1638          * be used, but during testing of the configuration file, all messages
1639          * should go directly to the console: */
1640         if (Use_Log) Log( Level, "%s", msg );
1641         else puts( msg );
1642 } /* Config_Error */
1643
1644
1645 #ifdef DEBUG
1646
1647 GLOBAL void
1648 Conf_DebugDump(void)
1649 {
1650         int i;
1651
1652         Log(LOG_DEBUG, "Configured servers:");
1653         for (i = 0; i < MAX_SERVERS; i++) {
1654                 if (! Conf_Server[i].name[0])
1655                         continue;
1656                 Log(LOG_DEBUG,
1657                     " - %s: %s:%d, last=%ld, group=%d, flags=%d, conn=%d",
1658                     Conf_Server[i].name, Conf_Server[i].host,
1659                     Conf_Server[i].port, Conf_Server[i].lasttry,
1660                     Conf_Server[i].group, Conf_Server[i].flags,
1661                     Conf_Server[i].conn_id);
1662         }
1663 } /* Conf_DebugDump */
1664
1665 #endif
1666
1667
1668 static void
1669 Init_Server_Struct( CONF_SERVER *Server )
1670 {
1671         /* Initialize server configuration structur to default values */
1672
1673         assert( Server != NULL );
1674
1675         memset( Server, 0, sizeof (CONF_SERVER) );
1676
1677         Server->group = NONE;
1678         Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
1679
1680         if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
1681
1682         Proc_InitStruct(&Server->res_stat);
1683         Server->conn_id = NONE;
1684         memset(&Server->bind_addr, 0, sizeof(&Server->bind_addr));
1685 } /* Init_Server_Struct */
1686
1687
1688 /* -eof- */