src/ngircd/ngircd.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2005 by 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  * Main program -- main()
  12  */
  13
  14
  15 #include "portab.h"
  16
  17 static char UNUSED id[] = "$Id: ngircd.c,v 1.90 2005/02/09 09:52:58 alex Exp $";
  18
  19 #include "imp.h"
  20 #include <assert.h>
  21 #include <errno.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <signal.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <time.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <sys/wait.h>
  31 #include <pwd.h>
  32 #include <grp.h>
  33
  34 #include "defines.h"
  35 #include "resolve.h"
  36 #include "conn.h"
  37 #include "client.h"
  38 #include "channel.h"
  39 #include "conf.h"
  40 #include "cvs-version.h"
  41 #include "lists.h"
  42 #include "log.h"
  43 #include "parse.h"
  44 #include "irc.h"
  45
  46 #ifdef RENDEZVOUS
  47 #include "rendezvous.h"
  48 #endif
  49
  50 #include "exp.h"
  51 #include "ngircd.h"
  52
  53
  54 LOCAL VOID Initialize_Signal_Handler PARAMS(( VOID ));
  55 LOCAL VOID Signal_Handler PARAMS(( INT Signal ));
  56
  57 LOCAL VOID Show_Version PARAMS(( VOID ));
  58 LOCAL VOID Show_Help PARAMS(( VOID ));
  59
  60 LOCAL VOID Pidfile_Create PARAMS(( LONG ));
  61 LOCAL VOID Pidfile_Delete PARAMS(( VOID ));
  62
  63 LOCAL VOID NGIRCd_FillVersion PARAMS(( VOID ));
  64
  65
  66 GLOBAL int
  67 main( int argc, const char *argv[] )
  68 {
  69         struct passwd *pwd;
  70         struct group *grp;
  71         BOOLEAN ok, configtest = FALSE;
  72         LONG pid, n;
  73         INT i;
  74
  75         umask( 0077 );
  76
  77         NGIRCd_SignalQuit = NGIRCd_SignalRestart = NGIRCd_SignalRehash = FALSE;
  78         NGIRCd_NoDaemon = NGIRCd_Passive = FALSE;
  79 #ifdef DEBUG
  80         NGIRCd_Debug = FALSE;
  81 #endif
  82 #ifdef SNIFFER
  83         NGIRCd_Sniffer = FALSE;
  84 #endif
  85         strlcpy( NGIRCd_ConfFile, SYSCONFDIR, sizeof( NGIRCd_ConfFile ));
  86         strlcat( NGIRCd_ConfFile, CONFIG_FILE, sizeof( NGIRCd_ConfFile ));
  87
  88         NGIRCd_FillVersion( );
  89
  90         /* Kommandozeile parsen */
  91         for( i = 1; i < argc; i++ )
  92         {
  93                 ok = FALSE;
  94                 if(( argv[i][0] == '-' ) && ( argv[i][1] == '-' ))
  95                 {
  96                         /* Lange Option */
  97
  98                         if( strcmp( argv[i], "--config" ) == 0 )
  99                         {
 100                                 if( i + 1 < argc )
 101                                 {
 102                                         /* Ok, there's an parameter left */
 103                                         strlcpy( NGIRCd_ConfFile, argv[i + 1], sizeof( NGIRCd_ConfFile ));
 104
 105                                         /* next parameter */
 106                                         i++; ok = TRUE;
 107                                 }
 108                         }
 109                         if( strcmp( argv[i], "--configtest" ) == 0 )
 110                         {
 111                                 configtest = TRUE;
 112                                 ok = TRUE;
 113                         }
 114 #ifdef DEBUG
 115                         if( strcmp( argv[i], "--debug" ) == 0 )
 116                         {
 117                                 NGIRCd_Debug = TRUE;
 118                                 ok = TRUE;
 119                         }
 120 #endif
 121                         if( strcmp( argv[i], "--help" ) == 0 )
 122                         {
 123                                 Show_Version( );
 124                                 puts( "" ); Show_Help( ); puts( "" );
 125                                 exit( 1 );
 126                         }
 127                         if( strcmp( argv[i], "--nodaemon" ) == 0 )
 128                         {
 129                                 NGIRCd_NoDaemon = TRUE;
 130                                 ok = TRUE;
 131                         }
 132                         if( strcmp( argv[i], "--passive" ) == 0 )
 133                         {
 134                                 NGIRCd_Passive = TRUE;
 135                                 ok = TRUE;
 136                         }
 137 #ifdef SNIFFER
 138                         if( strcmp( argv[i], "--sniffer" ) == 0 )
 139                         {
 140                                 NGIRCd_Sniffer = TRUE;
 141                                 ok = TRUE;
 142                         }
 143 #endif
 144                         if( strcmp( argv[i], "--version" ) == 0 )
 145                         {
 146                                 Show_Version( );
 147                                 exit( 1 );
 148                         }
 149                 }
 150                 else if(( argv[i][0] == '-' ) && ( argv[i][1] != '-' ))
 151                 {
 152                         /* Kurze Option */
 153
 154                         for( n = 1; n < (LONG)strlen( argv[i] ); n++ )
 155                         {
 156                                 ok = FALSE;
 157 #ifdef DEBUG
 158                                 if( argv[i][n] == 'd' )
 159                                 {
 160                                         NGIRCd_Debug = TRUE;
 161                                         ok = TRUE;
 162                                 }
 163 #endif
 164                                 if( argv[i][n] == 'f' )
 165                                 {
 166                                         if(( ! argv[i][n + 1] ) && ( i + 1 < argc ))
 167                                         {
 168                                                 /* Ok, next character is a blank */
 169                                                 strlcpy( NGIRCd_ConfFile, argv[i + 1], sizeof( NGIRCd_ConfFile ));
 170
 171                                                 /* go to the following parameter */
 172                                                 i++; n = (LONG)strlen( argv[i] );
 173                                                 ok = TRUE;
 174                                         }
 175                                 }
 176                                 if( argv[i][n] == 'n' )
 177                                 {
 178                                         NGIRCd_NoDaemon = TRUE;
 179                                         ok = TRUE;
 180                                 }
 181                                 if( argv[i][n] == 'p' )
 182                                 {
 183                                         NGIRCd_Passive = TRUE;
 184                                         ok = TRUE;
 185                                 }
 186 #ifdef SNIFFER
 187                                 if( argv[i][n] == 's' )
 188                                 {
 189                                         NGIRCd_Sniffer = TRUE;
 190                                         ok = TRUE;
 191                                 }
 192 #endif
 193                                 if( argv[i][n] == 't' )
 194                                 {
 195                                         configtest = TRUE;
 196                                         ok = TRUE;
 197                                 }
 198
 199                                 if( ! ok )
 200                                 {
 201                                         printf( "%s: invalid option \"-%c\"!\n", PACKAGE_NAME, argv[i][n] );
 202                                         printf( "Try \"%s --help\" for more information.\n", PACKAGE_NAME );
 203                                         exit( 1 );
 204                                 }
 205                         }
 206
 207                 }
 208                 if( ! ok )
 209                 {
 210                         printf( "%s: invalid option \"%s\"!\n", PACKAGE_NAME, argv[i] );
 211                         printf( "Try \"%s --help\" for more information.\n", PACKAGE_NAME );
 212                         exit( 1 );
 213                 }
 214         }
 215
 216         /* Debug-Level (fuer IRC-Befehl "VERSION") ermitteln */
 217         NGIRCd_DebugLevel[0] = '\0';
 218 #ifdef DEBUG
 219         if( NGIRCd_Debug ) strcpy( NGIRCd_DebugLevel, "1" );
 220 #endif
 221 #ifdef SNIFFER
 222         if( NGIRCd_Sniffer )
 223         {
 224                 NGIRCd_Debug = TRUE;
 225                 strcpy( NGIRCd_DebugLevel, "2" );
 226         }
 227 #endif
 228
 229         /* Soll nur die Konfigurations ueberprueft und ausgegeben werden? */
 230         if( configtest )
 231         {
 232                 Show_Version( ); puts( "" );
 233                 exit( Conf_Test( ));
 234         }
 235
 236         while( ! NGIRCd_SignalQuit )
 237         {
 238                 /* Initialize global variables */
 239                 NGIRCd_Start = time( NULL );
 240                 (VOID)strftime( NGIRCd_StartStr, 64, "%a %b %d %Y at %H:%M:%S (%Z)", localtime( &NGIRCd_Start ));
 241
 242                 NGIRCd_SignalRehash = FALSE;
 243                 NGIRCd_SignalRestart = FALSE;
 244                 NGIRCd_SignalQuit = FALSE;
 245
 246                 /* Initialize modules, part I */
 247                 Log_Init( );
 248                 Conf_Init( );
 249
 250                 if( Conf_Chroot[0] )
 251                 {
 252                         /* Chroot */
 253                         if( chdir( Conf_Chroot ) != 0 ) Log( LOG_ERR, "Can't chdir() in ChrootDir (%s): %s", Conf_Chroot, strerror( errno ));
 254
 255                         if( chroot( Conf_Chroot ) != 0 ) Log( LOG_ERR, "Can't change root directory to \"%s\": %s", Conf_Chroot, strerror( errno ));
 256                         else Log( LOG_INFO, "Changed root and working directory to \"%s\".", Conf_Chroot );
 257                 }
 258
 259                 if( Conf_GID != 0 )
 260                 {
 261                         /* Set new group ID */
 262                         if( setgid( Conf_GID ) != 0 ) Log( LOG_ERR, "Can't change group ID to %u: %s", Conf_GID, strerror( errno ));
 263                 }
 264                 if( Conf_UID != 0 )
 265                 {
 266                         /* Set new user ID */
 267                         if( setuid( Conf_UID ) != 0 ) Log( LOG_ERR, "Can't change user ID to %u: %s", Conf_UID, strerror( errno ));
 268                 }
 269
 270                 /* In der Regel wird ein Sub-Prozess ge-fork()'t, der
 271                  * nicht mehr mit dem Terminal verbunden ist. Mit der
 272                  * Option "--nodaemon" kann dies (z.B. zum Debuggen)
 273                  * verhindert werden. */
 274                 if( ! NGIRCd_NoDaemon )
 275                 {
 276                         /* Daemon im Hintergrund erzeugen */
 277                         pid = (LONG)fork( );
 278                         if( pid > 0 )
 279                         {
 280                                 /* "alter" Prozess */
 281                                 exit( 0 );
 282                         }
 283                         if( pid < 0 )
 284                         {
 285                                 /* Fehler */
 286                                 printf( "%s: Can't fork: %s!\nFatal error, exiting now ...\n", PACKAGE_NAME, strerror( errno ));
 287                                 exit( 1 );
 288                         }
 289
 290                         /* Child-Prozess initialisieren */
 291                         (VOID)setsid( );
 292                         chdir( "/" );
 293                 }
 294
 295                 /* Create PID file */
 296                 pid = (LONG) getpid( );
 297                 Pidfile_Create( pid );
 298
 299                 /* Show user, group, and PID of the running daemon */
 300                 pwd = getpwuid( getuid( )); grp = getgrgid( getgid( ));
 301                 Log( LOG_INFO, "Running as user %s(%ld), group %s(%ld), with PID %ld.", pwd ? pwd->pw_name : "unknown", (LONG)getuid( ), grp ? grp->gr_name : "unknown", (LONG)getgid( ), pid);
 302
 303                 /* Change working directory to home directory of the user
 304                  * we are running as (when not running chroot()'ed!) */
 305                 if( Conf_UID != 0 && ! Conf_Chroot[0] )
 306                 {
 307                         struct passwd *pwd;
 308
 309                         pwd = getpwuid( Conf_UID );
 310                         if( pwd != NULL )
 311                         {
 312                                 if( chdir( pwd->pw_dir ) == 0 ) Log( LOG_DEBUG, "Changed working directory to \"%s\" ...", pwd->pw_dir );
 313                                 else Log( LOG_ERR, "Can't change working directory to \"%s\": %s", pwd->pw_dir, strerror( errno ));
 314                         }
 315                         else Log( LOG_ERR, "Can't get user informaton for UID %d!?", Conf_UID );
 316                 }
 317
 318                 /* Initialize modules, part II: these functions are eventually
 319                  * called with already dropped privileges ... */
 320                 Resolve_Init( );
 321                 Lists_Init( );
 322                 Channel_Init( );
 323                 Client_Init( );
 324 #ifdef RENDEZVOUS
 325                 Rendezvous_Init( );
 326 #endif
 327                 Conn_Init( );
 328
 329                 /* Redirect stderr handle to "error file" for debugging.
 330                  * But don't try to write in the chroot jail, since it's more
 331                  * secure to have a chroot dir not writable by the daemon.
 332                  */
 333                 if( ! Conf_Chroot[0] ) Log_InitErrorfile( );
 334
 335                 /* Signal-Handler initialisieren */
 336                 Initialize_Signal_Handler( );
 337
 338                 /* Protokoll- und Server-Identifikation erzeugen. Die vom ngIRCd
 339                  * beim PASS-Befehl verwendete Syntax sowie die erweiterten Flags
 340                  * sind in doc/Protocol.txt beschrieben. */
 341 #ifdef IRCPLUS
 342                 sprintf( NGIRCd_ProtoID, "%s%s %s|%s:%s", PROTOVER, PROTOIRCPLUS, PACKAGE_NAME, PACKAGE_VERSION, IRCPLUSFLAGS );
 343 #ifdef ZLIB
 344                 strcat( NGIRCd_ProtoID, "Z" );
 345 #endif
 346                 if( Conf_OperCanMode ) strcat( NGIRCd_ProtoID, "o" );
 347 #else
 348                 sprintf( NGIRCd_ProtoID, "%s%s %s|%s", PROTOVER, PROTOIRC, PACKAGE_NAME, PACKAGE_VERSION );
 349 #endif
 350                 strcat( NGIRCd_ProtoID, " P" );
 351 #ifdef ZLIB
 352                 strcat( NGIRCd_ProtoID, "Z" );
 353 #endif
 354                 Log( LOG_DEBUG, "Protocol and server ID is \"%s\".", NGIRCd_ProtoID );
 355
 356                 /* Vordefinierte Channels anlegen */
 357                 Channel_InitPredefined( );
 358
 359                 /* Listen-Ports initialisieren */
 360                 if( Conn_InitListeners( ) < 1 )
 361                 {
 362                         Log( LOG_ALERT, "Server isn't listening on a single port!" );
 363                         Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
 364                         Pidfile_Delete( );
 365                         exit( 1 );
 366                 }
 367
 368                 /* Hauptschleife */
 369                 Conn_Handler( );
 370
 371                 /* Alles abmelden */
 372                 Conn_Exit( );
 373 #ifdef RENDEZVOUS
 374                 Rendezvous_Exit( );
 375 #endif
 376                 Client_Exit( );
 377                 Channel_Exit( );
 378                 Lists_Exit( );
 379                 Log_Exit( );
 380
 381                 Pidfile_Delete( );
 382         }
 383
 384         return 0;
 385 } /* main */
 386
 387
 388 LOCAL VOID
 389 NGIRCd_FillVersion( VOID )
 390 {
 391         NGIRCd_VersionAddition[0] = '\0';
 392
 393 #ifdef SYSLOG
 394         strcpy( NGIRCd_VersionAddition, "SYSLOG" );
 395 #endif
 396 #ifdef ZLIB
 397         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 398         strcat( NGIRCd_VersionAddition, "ZLIB" );
 399 #endif
 400 #ifdef TCPWRAP
 401         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 402         strcat( NGIRCd_VersionAddition, "TCPWRAP" );
 403 #endif
 404 #ifdef RENDEZVOUS
 405         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 406         strcat( NGIRCd_VersionAddition, "RENDEZVOUS" );
 407 #endif
 408 #ifdef IDENTAUTH
 409         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 410         strcat( NGIRCd_VersionAddition, "IDENT" );
 411 #endif
 412 #ifdef DEBUG
 413         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 414         strcat( NGIRCd_VersionAddition, "DEBUG" );
 415 #endif
 416 #ifdef SNIFFER
 417         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 418         strcat( NGIRCd_VersionAddition, "SNIFFER" );
 419 #endif
 420 #ifdef STRICT_RFC
 421         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 422         strcat( NGIRCd_VersionAddition, "RFC" );
 423 #endif
 424 #ifdef IRCPLUS
 425         if( NGIRCd_VersionAddition[0] ) strcat( NGIRCd_VersionAddition, "+" );
 426         strcat( NGIRCd_VersionAddition, "IRCPLUS" );
 427 #endif
 428
 429         if( NGIRCd_VersionAddition[0] ) strlcat( NGIRCd_VersionAddition, "-", sizeof( NGIRCd_VersionAddition ));
 430         strlcat( NGIRCd_VersionAddition, TARGET_CPU, sizeof( NGIRCd_VersionAddition ));
 431         strlcat( NGIRCd_VersionAddition, "/", sizeof( NGIRCd_VersionAddition ));
 432         strlcat( NGIRCd_VersionAddition, TARGET_VENDOR, sizeof( NGIRCd_VersionAddition ));
 433         strlcat( NGIRCd_VersionAddition, "/", sizeof( NGIRCd_VersionAddition ));
 434         strlcat( NGIRCd_VersionAddition, TARGET_OS, sizeof( NGIRCd_VersionAddition ));
 435
 436 #ifdef CVSDATE
 437         snprintf( NGIRCd_Version, sizeof NGIRCd_Version,"%s %s(%s)-%s", PACKAGE_NAME, PACKAGE_VERSION, CVSDATE, NGIRCd_VersionAddition);
 438 #else
 439         snprintf( NGIRCd_Version, sizeof NGIRCd_Version, "%s %s-%s", PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_VersionAddition);
 440 #endif
 441 } /* NGIRCd_FillVersion */
 442
 443
 444 GLOBAL VOID
 445 NGIRCd_Rehash( VOID )
 446 {
 447         CHAR old_name[CLIENT_ID_LEN];
 448
 449         Log( LOG_NOTICE|LOG_snotice, "Re-reading configuration NOW!" );
 450         NGIRCd_SignalRehash = FALSE;
 451
 452         /* Close down all listening sockets */
 453         Conn_ExitListeners( );
 454
 455         /* Remember old server name */
 456         strcpy( old_name, Conf_ServerName );
 457
 458         /* Re-read configuration ... */
 459         Conf_Rehash( );
 460
 461         /* Recover old server name: it can't be changed during run-time */
 462         if( strcmp( old_name, Conf_ServerName ) != 0 )
 463         {
 464                 strcpy( Conf_ServerName, old_name );
 465                 Log( LOG_ERR, "Can't change \"ServerName\" on runtime! Ignored new name." );
 466         }
 467
 468         /* Create new pre-defined channels */
 469         Channel_InitPredefined( );
 470
 471         /* Start listening on sockets */
 472         Conn_InitListeners( );
 473
 474         /* Sync configuration with established connections */
 475         Conn_SyncServerStruct( );
 476
 477         Log( LOG_NOTICE|LOG_snotice, "Re-reading of configuration done." );
 478 } /* NGIRCd_Rehash */
 479
 480
 481 LOCAL VOID
 482 Initialize_Signal_Handler( VOID )
 483 {
 484         /* Signal-Handler initialisieren: einige Signale
 485          * werden ignoriert, andere speziell behandelt. */
 486
 487 #ifdef HAVE_SIGACTION
 488         /* sigaction() ist vorhanden */
 489
 490         struct sigaction saction;
 491
 492         /* Signal-Struktur initialisieren */
 493         memset( &saction, 0, sizeof( saction ));
 494         saction.sa_handler = Signal_Handler;
 495 #ifdef SA_RESTART
 496         saction.sa_flags |= SA_RESTART;
 497 #endif
 498 #ifdef SA_NOCLDWAIT
 499         saction.sa_flags |= SA_NOCLDWAIT;
 500 #endif
 501
 502         /* Signal-Handler einhaengen */
 503         sigaction( SIGINT, &saction, NULL );
 504         sigaction( SIGQUIT, &saction, NULL );
 505         sigaction( SIGTERM, &saction, NULL);
 506         sigaction( SIGHUP, &saction, NULL);
 507         sigaction( SIGCHLD, &saction, NULL);
 508
 509         /* einige Signale ignorieren */
 510         saction.sa_handler = SIG_IGN;
 511         sigaction( SIGPIPE, &saction, NULL );
 512 #else
 513         /* kein sigaction() vorhanden */
 514
 515         /* Signal-Handler einhaengen */
 516         signal( SIGINT, Signal_Handler );
 517         signal( SIGQUIT, Signal_Handler );
 518         signal( SIGTERM, Signal_Handler );
 519         signal( SIGHUP, Signal_Handler );
 520         signal( SIGCHLD, Signal_Handler );
 521
 522         /* einige Signale ignorieren */
 523         signal( SIGPIPE, SIG_IGN );
 524 #endif
 525 } /* Initialize_Signal_Handler */
 526
 527
 528 LOCAL VOID
 529 Signal_Handler( INT Signal )
 530 {
 531         /* Signal-Handler. Dieser wird aufgerufen, wenn eines der Signale eintrifft,
 532          * fuer das wir uns registriert haben (vgl. Initialize_Signal_Handler). Die
 533          * Nummer des eingetroffenen Signals wird der Funktion uebergeben. */
 534
 535         switch( Signal )
 536         {
 537                 case SIGTERM:
 538                 case SIGINT:
 539                 case SIGQUIT:
 540                         /* wir soll(t)en uns wohl beenden ... */
 541                         NGIRCd_SignalQuit = TRUE;
 542                         break;
 543                 case SIGHUP:
 544                         /* Konfiguration neu einlesen: */
 545                         NGIRCd_SignalRehash = TRUE;
 546                         break;
 547                 case SIGCHLD:
 548                         /* Child-Prozess wurde beendet. Zombies vermeiden: */
 549                         while( waitpid( -1, NULL, WNOHANG ) > 0);
 550                         break;
 551 #ifdef DEBUG
 552                 default:
 553                         /* unbekanntes bzw. unbehandeltes Signal */
 554                         Log( LOG_DEBUG, "Got signal %d! Ignored.", Signal );
 555 #endif
 556         }
 557 } /* Signal_Handler */
 558
 559
 560 LOCAL VOID
 561 Show_Version( VOID )
 562 {
 563         puts( NGIRCd_Version );
 564         puts( "Copyright (c)2001-2005 by Alexander Barton (<alex@barton.de>)." );
 565         puts( "Homepage: <http://arthur.ath.cx/~alex/ngircd/>\n" );
 566         puts( "This is free software; see the source for copying conditions. There is NO" );
 567         puts( "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." );
 568 } /* Show_Version */
 569
 570
 571 LOCAL VOID
 572 Show_Help( VOID )
 573 {
 574 #ifdef DEBUG
 575         puts( "  -d, --debug        log extra debug messages" );
 576 #endif
 577         puts( "  -f, --config <f>   use file <f> as configuration file" );
 578         puts( "  -n, --nodaemon     don't fork and don't detach from controlling terminal" );
 579         puts( "  -p, --passive      disable automatic connections to other servers" );
 580 #ifdef SNIFFER
 581         puts( "  -s, --sniffer      enable network sniffer and display all IRC traffic" );
 582 #endif
 583         puts( "  -t, --configtest   read, validate and display configuration; then exit" );
 584         puts( "      --version      output version information and exit" );
 585         puts( "      --help         display this help and exit" );
 586 } /* Show_Help */
 587
 588
 589 LOCAL VOID
 590 Pidfile_Delete( VOID )
 591 {
 592         /* Pidfile configured? */
 593         if( ! Conf_PidFile[0] ) return;
 594
 595 #ifdef DEBUG
 596         Log( LOG_DEBUG, "Removing PID file (%s) ...", Conf_PidFile );
 597 #endif
 598
 599         if( unlink( Conf_PidFile ))
 600                 Log( LOG_ERR, "Error unlinking PID file (%s): %s", Conf_PidFile, strerror( errno ));
 601 } /* Pidfile_Delete */
 602
 603
 604 LOCAL VOID
 605 Pidfile_Create( LONG pid )
 606 {
 607         FILE *pidf;
 608
 609         /* Pidfile configured? */
 610         if( ! Conf_PidFile[0] ) return;
 611
 612 #ifdef DEBUG
 613         Log( LOG_DEBUG, "Creating PID file (%s) ...", Conf_PidFile );
 614 #endif
 615
 616         pidf = fopen( Conf_PidFile, "w" );
 617
 618         if( ! pidf )
 619         {
 620                 Log( LOG_ERR, "Error writing PID file (%s): %s", Conf_PidFile, strerror( errno ));
 621                 return;
 622         }
 623
 624         if( fprintf( pidf, "%ld\n", pid ) < 0 )
 625                 Log( LOG_ERR, "Can't write PID file (%s): %s", Conf_PidFile, strerror( errno ));
 626
 627         if( fclose(pidf) != 0 )
 628                 Log( LOG_ERR, "Error closing PID file (%s): %s", Conf_PidFile, strerror( errno ));
 629 } /* Pidfile_Create */
 630
 631
 632 /* -eof- */