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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"
@implementation SUDiskImageUnarchiver
+ (BOOL)_canUnarchiveURL:(NSURL *)URL
return [URL conformsToType:@"public.disk-image"];
- (void)start
[NSThread detachNewThreadSelector:@selector(_extractDMG) toTarget:self withObject:nil];
- (void)_extractDMG
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSString *archivePath = [archiveURL path];
BOOL mountedSuccessfully = NO;
// get a unique mount point path
NSString *mountPrefix = [@"/Volumes" stringByAppendingPathComponent:[[archivePath lastPathComponent] stringByDeletingPathExtension]];
NSString *mountPoint = [mountPrefix stringByAppendingString:[[NSProcessInfo processInfo] globallyUniqueString]];
if ([[NSFileManager defaultManager] fileExistsAtPath:mountPoint]) goto reportError;
// create mount point folder
[[NSFileManager defaultManager] createDirectoryAtPath:mountPoint attributes:nil];
if (![[NSFileManager defaultManager] fileExistsAtPath:mountPoint]) goto reportError;
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.
NSString *targetPath = [[archivePath stringByDeletingLastPathComponent] stringByAppendingPathComponent:[mountPoint lastPathComponent]];
if (![[NSFileManager defaultManager] createDirectoryAtPath:targetPath attributes:nil]) goto reportError;
// We can't just copyPath: from the volume root because that always fails. Seems to be a bug.
id subpathEnumerator = [[[NSFileManager defaultManager] directoryContentsAtPath:mountPoint] objectEnumerator], currentSubpath;
while ((currentSubpath = [subpathEnumerator nextObject]))
if (![[NSFileManager defaultManager] copyPath:[mountPoint stringByAppendingPathComponent:currentSubpath] toPath:[targetPath stringByAppendingPathComponent:currentSubpath] handler:nil])
goto reportError;
[self performSelectorOnMainThread:@selector(_notifyDelegateOfSuccess) withObject:nil waitUntilDone:NO];
goto finally;
[self performSelectorOnMainThread:@selector(_notifyDelegateOfFailure) withObject:nil waitUntilDone:NO];
if (mountedSuccessfully)
[NSTask launchedTaskWithLaunchPath:@"/usr/bin/hdiutil" arguments:[NSArray arrayWithObjects:@"detach", mountPoint, @"-force", nil]];
[pool drain];
+ (void)load
[self _registerImplementation:self];
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