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//
// SUDiskImageUnarchiver.m
// Sparkle
//
// Created by Andy Matuschak on 6/16/08.
// Copyright 2008 Andy Matuschak. All rights reserved.
//
#import "SUDiskImageUnarchiver.h"
#import "SUUnarchiver_Private.h"
#import "NTSynchronousTask.h"
#import <CoreServices/CoreServices.h>
@implementation SUDiskImageUnarchiver
+ (BOOL)canUnarchivePath:(NSString *)path
{
return [[path pathExtension] isEqualToString:@"dmg"];
}
- (void)extractDMG
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
BOOL mountedSuccessfully = NO;
// get a unique mount point path
NSString *mountPointName = nil;
NSString *mountPoint = nil;
FSRef tmpRef;
do
{
CFUUIDRef uuid = CFUUIDCreate(NULL);
if (uuid)
{
CFStringRef uuidString = CFUUIDCreateString(NULL, uuid);
if (uuidString)
{
mountPoint = [@"/Volumes" stringByAppendingPathComponent:(NSString*)uuidString];
CFRelease(uuidString);
}
CFRelease(uuid);
}
}
while (noErr == FSPathMakeRefWithOptions((UInt8 *)[mountPoint fileSystemRepresentation], kFSPathMakeRefDoNotFollowLeafSymlink, &tmpRef, NULL));
NSArray* arguments = [NSArray arrayWithObjects:@"attach", archivePath, @"-mountpoint", mountPoint, @"-noverify", @"-nobrowse", @"-noautoopen", nil];
// set up a pipe and push "yes" (y works too), this will accept any license agreement crap
// not every .dmg needs this, but this will make sure it works with everyone
NSData* yesData = [[[NSData alloc] initWithBytes:"yes\n" length:4] autorelease];
NSData *result = [NTSynchronousTask task:@"/usr/bin/hdiutil" directory:@"/" withArgs:arguments input:yesData];
if (!result) goto reportError;
mountedSuccessfully = YES;
// Now that we've mounted it, we need to copy out its contents.
FSRef srcRef, dstRef;
OSStatus err;
err = FSPathMakeRef((UInt8 *)[mountPoint fileSystemRepresentation], &srcRef, NULL);
if (err != noErr) goto reportError;
err = FSPathMakeRef((UInt8 *)[[archivePath stringByDeletingLastPathComponent] fileSystemRepresentation], &dstRef, NULL);
if (err != noErr) goto reportError;
err = FSCopyObjectSync(&srcRef, &dstRef, (CFStringRef)mountPointName, NULL, kFSFileOperationSkipSourcePermissionErrors);
if (err != noErr) goto reportError;
[self performSelectorOnMainThread:@selector(notifyDelegateOfSuccess) withObject:nil waitUntilDone:NO];
goto finally;
reportError:
[self performSelectorOnMainThread:@selector(notifyDelegateOfFailure) withObject:nil waitUntilDone:NO];
finally:
if (mountedSuccessfully)
[NSTask launchedTaskWithLaunchPath:@"/usr/bin/hdiutil" arguments:[NSArray arrayWithObjects:@"detach", mountPoint, @"-force", nil]];
[pool drain];
}
- (void)start
{
[NSThread detachNewThreadSelector:@selector(extractDMG) toTarget:self withObject:nil];
}
+ (void)load
{
[self registerImplementation:self];
}
@end
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