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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 "SULog.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;
SULog(@"Extracting %@ as a DMG", archivePath);
// get a unique mount point path
NSString *mountPointName = nil;
NSString *mountPoint = nil;
FSRef tmpRef;
CFUUIDRef uuid = CFUUIDCreate(NULL);
if (uuid)
CFStringRef uuidString = CFUUIDCreateString(NULL, uuid);
if (uuidString)
mountPoint = [@"/Volumes" stringByAppendingPathComponent:(NSString*)uuidString];
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 *output = nil;
int returnCode = [NTSynchronousTask task:@"/usr/bin/hdiutil" directory:@"/" withArgs:arguments input:yesData output: &output];
if ( returnCode != 0 )
NSString* resultStr = output ? [[[NSString alloc] initWithData: output encoding: NSUTF8StringEncoding] autorelease] : nil;
SULog( @"hdiutil failed with code: %d data: <<%@>>", returnCode, resultStr );
goto reportError;
mountedSuccessfully = YES;
// Now that we've mounted it, we need to copy out its contents.
if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_5) {
// On 10.6 and later we don't want to use the File Manager API and instead want to use NSFileManager (fixes #827357).
NSFileManager *manager = [[[NSFileManager alloc] init] autorelease];
NSError *error = nil;
NSArray *contents = [manager contentsOfDirectoryAtPath:mountPoint error:&error];
if (error)
SULog(@"Couldn't enumerate contents of archive mounted at %@: %@", mountPoint, error);
goto reportError;
NSEnumerator *contentsEnumerator = [contents objectEnumerator];
NSString *item;
while ((item = [contentsEnumerator nextObject]))
NSString *fromPath = [mountPoint stringByAppendingPathComponent:item];
NSString *toPath = [[archivePath stringByDeletingLastPathComponent] stringByAppendingPathComponent:item];
// We skip any files in the DMG which are not readable.
if (![manager isReadableFileAtPath:fromPath])
SULog(@"copyItemAtPath:%@ toPath:%@", fromPath, toPath);
if (![manager copyItemAtPath:fromPath toPath:toPath error:&error])
SULog(@"Couldn't copy item: %@", error);
goto reportError;
else {
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;
[self performSelectorOnMainThread:@selector(notifyDelegateOfFailure) withObject:nil waitUntilDone:NO];
if (mountedSuccessfully)
[NSTask launchedTaskWithLaunchPath:@"/usr/bin/hdiutil" arguments:[NSArray arrayWithObjects:@"detach", mountPoint, @"-force", nil]];
SULog(@"Can't mount DMG %@",archivePath);
[pool drain];
- (void)start
[NSThread detachNewThreadSelector:@selector(extractDMG) toTarget:self withObject:nil];
+ (void)load
[self registerImplementation:self];
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