dedicated.cpp

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00001 /* $Id: dedicated.cpp 26098 2013-11-25 09:20:35Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 
00014 #ifdef ENABLE_NETWORK
00015 
00016 char *_log_file = NULL; 
00017 FILE *_log_fd   = NULL; 
00018 
00019 #if defined(UNIX) && !defined(__MORPHOS__)
00020 
00021 #include <unistd.h>
00022 
00023 #if (defined(SUNOS) && !defined(_LP64) && !defined(_I32LPx)) || defined(__HAIKU__)
00024 /* Solaris has, in certain situation, pid_t defined as long, while in other
00025  *  cases it has it defined as int... this handles all cases nicely.
00026  * Haiku has also defined pid_t as a long.
00027  */
00028 # define PRINTF_PID_T "%ld"
00029 #else
00030 # define PRINTF_PID_T "%d"
00031 #endif
00032 
00033 void DedicatedFork()
00034 {
00035   /* Fork the program */
00036   pid_t pid = fork();
00037   switch (pid) {
00038     case -1:
00039       perror("Unable to fork");
00040       exit(1);
00041 
00042     case 0: { // We're the child
00043       /* Open the log-file to log all stuff too */
00044       _log_fd = fopen(_log_file, "a");
00045       if (_log_fd == NULL) {
00046         perror("Unable to open logfile");
00047         exit(1);
00048       }
00049       /* Redirect stdout and stderr to log-file */
00050       if (dup2(fileno(_log_fd), fileno(stdout)) == -1) {
00051         perror("Rerouting stdout");
00052         exit(1);
00053       }
00054       if (dup2(fileno(_log_fd), fileno(stderr)) == -1) {
00055         perror("Rerouting stderr");
00056         exit(1);
00057       }
00058       break;
00059     }
00060 
00061     default:
00062       /* We're the parent */
00063       printf("Loading dedicated server...\n");
00064       printf("  - Forked to background with pid " PRINTF_PID_T "\n", pid);
00065       exit(0);
00066   }
00067 }
00068 #endif
00069 
00070 #else
00071 
00073 void DedicatedFork() {}
00074 
00075 #endif /* ENABLE_NETWORK */