michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <Cocoa/Cocoa.h>
michael@0: #include <CoreServices/CoreServices.h>
michael@0: #include <crt_externs.h>
michael@0: #include <stdlib.h>
michael@0: #include <stdio.h>
michael@0: #include <spawn.h>
michael@0: #include "readstrings.h"
michael@0: 
michael@0: // Prefer the currently running architecture (this is the same as the
michael@0: // architecture that launched the updater) and fallback to CPU_TYPE_ANY if it
michael@0: // is no longer available after the update.
michael@0: static cpu_type_t pref_cpu_types[2] = {
michael@0: #if defined(__i386__)
michael@0:                                  CPU_TYPE_X86,
michael@0: #elif defined(__x86_64__)
michael@0:                                  CPU_TYPE_X86_64,
michael@0: #elif defined(__ppc__)
michael@0:                                  CPU_TYPE_POWERPC,
michael@0: #endif
michael@0:                                  CPU_TYPE_ANY };
michael@0: 
michael@0: void LaunchChild(int argc, char **argv)
michael@0: {
michael@0:   // Initialize spawn attributes.
michael@0:   posix_spawnattr_t spawnattr;
michael@0:   if (posix_spawnattr_init(&spawnattr) != 0) {
michael@0:     printf("Failed to init posix spawn attribute.");
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // Set spawn attributes.
michael@0:   size_t attr_count = 2;
michael@0:   size_t attr_ocount = 0;
michael@0:   if (posix_spawnattr_setbinpref_np(&spawnattr, attr_count, pref_cpu_types, &attr_ocount) != 0 ||
michael@0:       attr_ocount != attr_count) {
michael@0:     printf("Failed to set binary preference on posix spawn attribute.");
michael@0:     posix_spawnattr_destroy(&spawnattr);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // "posix_spawnp" uses null termination for arguments rather than a count.
michael@0:   // Note that we are not duplicating the argument strings themselves.
michael@0:   char** argv_copy = (char**)malloc((argc + 1) * sizeof(char*));
michael@0:   if (!argv_copy) {
michael@0:     printf("Failed to allocate memory for arguments.");
michael@0:     posix_spawnattr_destroy(&spawnattr);
michael@0:     return;
michael@0:   }
michael@0:   for (int i = 0; i < argc; i++) {
michael@0:     argv_copy[i] = argv[i];
michael@0:   }
michael@0:   argv_copy[argc] = NULL;
michael@0: 
michael@0:   // Pass along our environment.
michael@0:   char** envp = NULL;
michael@0:   char*** cocoaEnvironment = _NSGetEnviron();
michael@0:   if (cocoaEnvironment) {
michael@0:     envp = *cocoaEnvironment;
michael@0:   }
michael@0: 
michael@0:   int result = posix_spawnp(NULL, argv_copy[0], NULL, &spawnattr, argv_copy, envp);
michael@0: 
michael@0:   free(argv_copy);
michael@0:   posix_spawnattr_destroy(&spawnattr);
michael@0: 
michael@0:   if (result != 0) {
michael@0:     printf("Process spawn failed with code %d!", result);
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: LaunchMacPostProcess(const char* aAppExe)
michael@0: {
michael@0:   // Launch helper to perform post processing for the update; this is the Mac
michael@0:   // analogue of LaunchWinPostProcess (PostUpdateWin).
michael@0:   NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
michael@0: 
michael@0:   // Find the app bundle containing the executable path given
michael@0:   NSString *path = [NSString stringWithUTF8String:aAppExe];
michael@0:   NSBundle *bundle;
michael@0:   do {
michael@0:     path = [path stringByDeletingLastPathComponent];
michael@0:     bundle = [NSBundle bundleWithPath:path];
michael@0:   } while ((!bundle || ![bundle bundleIdentifier]) && [path length] > 1);
michael@0:   if (!bundle) {
michael@0:     // No bundle found for the app being launched
michael@0:     [pool release];
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   NSString *iniPath = [bundle pathForResource:@"updater" ofType:@"ini"];
michael@0:   if (!iniPath) {
michael@0:     // the file does not exist; there is nothing to run
michael@0:     [pool release];
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   int readResult;
michael@0:   char values[2][MAX_TEXT_LEN];
michael@0:   readResult = ReadStrings([iniPath UTF8String],
michael@0:                            "ExeArg\0ExeRelPath\0",
michael@0:                            2,
michael@0:                            values,
michael@0:                            "PostUpdateMac");
michael@0:   if (readResult) {
michael@0:     [pool release];
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   NSString *exeArg = [NSString stringWithUTF8String:values[0]];
michael@0:   NSString *exeRelPath = [NSString stringWithUTF8String:values[1]];
michael@0:   if (!exeArg || !exeRelPath) {
michael@0:     [pool release];
michael@0:     return;
michael@0:   }
michael@0:   
michael@0:   NSString *resourcePath = [bundle resourcePath];
michael@0:   NSString *exeFullPath = [resourcePath stringByAppendingPathComponent:exeRelPath];
michael@0: 
michael@0:   NSTask *task = [[NSTask alloc] init];
michael@0:   [task setLaunchPath:exeFullPath];
michael@0:   [task setArguments:[NSArray arrayWithObject:exeArg]];
michael@0:   [task launch];
michael@0:   [task waitUntilExit];
michael@0:   // ignore the return value of the task, there's nothing we can do with it
michael@0:   [task release];
michael@0: 
michael@0:   [pool release];  
michael@0: }
michael@0: