mirror of
https://github.com/chocolate-doom/launcher.git
synced 2024-11-24 21:31:17 +00:00
4c276878e8
running setup multiple times doesn't cause the IWAD detection to stop working. Subversion-branch: /launcher Subversion-revision: 1769
111 lines
2.6 KiB
Objective-C
111 lines
2.6 KiB
Objective-C
/* ... */
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//-----------------------------------------------------------------------------
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//
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// Copyright(C) 2009 Simon Howard
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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// 02111-1307, USA.
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//
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#define RESPONSE_FILE "/tmp/launcher.rsp"
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static char *executable_path;
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// Called on startup to save the location of the launcher program
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// (within a package, other executables should be in the same directory)
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void SetProgramLocation(const char *path)
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{
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char *p;
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executable_path = strdup(path);
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p = strrchr(executable_path, '/');
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*p = '\0';
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}
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// Write out the response file containing command line arguments.
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static void WriteResponseFile(const char *iwad, const char *args)
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{
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FILE *fstream;
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fstream = fopen(RESPONSE_FILE, "w");
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if (iwad != NULL)
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{
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fprintf(fstream, "-iwad \"%s\"", iwad);
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}
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if (args != NULL)
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{
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fprintf(fstream, "%s", args);
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}
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fclose(fstream);
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}
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static void DoExec(const char *executable, const char *iwad, const char *args)
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{
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char *argv[3];
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argv[0] = malloc(strlen(executable_path) + strlen(executable) + 3);
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sprintf(argv[0], "%s/%s", executable_path, executable);
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if (iwad != NULL || args != NULL)
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{
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WriteResponseFile(iwad, args);
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argv[1] = "@" RESPONSE_FILE;
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argv[2] = NULL;
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}
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else
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{
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argv[1] = NULL;
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}
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execv(argv[0], argv);
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exit(-1);
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}
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// Execute the specified executable contained in the same directory
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// as the launcher, with the specified arguments.
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void ExecuteProgram(const char *executable, const char *iwad, const char *args)
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{
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pid_t childpid;
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childpid = fork();
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if (childpid == 0)
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{
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signal(SIGCHLD, SIG_DFL);
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DoExec(executable, iwad, args);
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}
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else
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{
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signal(SIGCHLD, SIG_IGN);
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}
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}
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