SUPackageInstaller.m

//
//  SUPackageInstaller.m
//  Sparkle
//
//  Created by Andy Matuschak on 4/10/08.
//  Copyright 2008 Andy Matuschak. All rights reserved.
//

#import "SUPackageInstaller.h"
#import <Cocoa/Cocoa.h>
#import "SUConstants.h"

static NSString * const SUPackageInstallerCommandKey = @"SUPackageInstallerCommand";
static NSString * const SUPackageInstallerArgumentsKey = @"SUPackageInstallerArguments";
static NSString * const SUPackageInstallerHostKey = @"SUPackageInstallerHost";
static NSString * const SUPackageInstallerDelegateKey = @"SUPackageInstallerDelegate";
static NSString * const SUPackageInstallerInstallationPathKey = @"SUPackageInstallerInstallationPathKey";

@implementation SUPackageInstaller

+ (void)finishInstallationWithInfo:(NSDictionary *)info
{
	[self finishInstallationToPath:info[SUPackageInstallerInstallationPathKey] withResult:YES host:info[SUPackageInstallerHostKey] error:nil delegate:info[SUPackageInstallerDelegateKey]];
}

+ (void)performInstallationWithInfo:(NSDictionary *)info
{
	@autoreleasepool {
		NSTask *installer = [NSTask launchedTaskWithLaunchPath:info[SUPackageInstallerCommandKey] arguments:info[SUPackageInstallerArgumentsKey]];
		[installer waitUntilExit];

		// Known bug: if the installation fails or is canceled, Sparkle goes ahead and restarts, thinking everything is fine.
		dispatch_async(dispatch_get_main_queue(), ^{
			[self finishInstallationWithInfo:info];
		});
	}
}

+ (void)performInstallationToPath:(NSString *)installationPath fromPath:(NSString *)path host:(SUHost *)host delegate:(id <SUInstallerDelegate>)delegate synchronously:(BOOL)synchronously versionComparator:(id <SUVersionComparison>) __unused comparator
{
	NSString *command;
	NSArray *args;

	// Run installer using the "open" command to ensure it is launched in front of current application.
	// -W = wait until the app has quit.
	// -n = Open another instance if already open.
	// -b = app bundle identifier
	command = @"/usr/bin/open";
	args = @[@"-W", @"-n", @"-b", @"com.apple.installer", path];

	if (![[NSFileManager defaultManager] fileExistsAtPath:command])
	{
		NSError *error = [NSError errorWithDomain:SUSparkleErrorDomain code:SUMissingInstallerToolError userInfo:@{NSLocalizedDescriptionKey: @"Couldn't find Apple's installer tool!"}];
		[self finishInstallationToPath:installationPath withResult:NO host:host error:error delegate:delegate];
	}
	else
	{
		NSDictionary *info = @{SUPackageInstallerCommandKey: command, SUPackageInstallerArgumentsKey: args, SUPackageInstallerHostKey: host, SUPackageInstallerDelegateKey: delegate, SUPackageInstallerInstallationPathKey: installationPath};
		if (synchronously)
			[self performInstallationWithInfo:info];
		else {
			dispatch_async(dispatch_get_global_queue(0, 0), ^{
				[self performInstallationWithInfo:info];
			});
		}
	}
}

@end