51 lines
2.2 KiB
Mathematica
51 lines
2.2 KiB
Mathematica
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// SUPlainInstaller.m
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// Sparkle
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//
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// Created by Andy Matuschak on 4/10/08.
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// Copyright 2008 Andy Matuschak. All rights reserved.
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//
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#import "SUPlainInstaller.h"
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#import "SUPlainInstallerInternals.h"
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#import "SUConstants.h"
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#import "SUHost.h"
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@implementation SUPlainInstaller
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+ (void)performInstallationToPath:(NSString *)installationPath fromPath:(NSString *)path host:(SUHost *)host delegate:(id<SUInstallerDelegate>)delegate versionComparator:(id<SUVersionComparison>)comparator
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{
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// Prevent malicious downgrades:
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#if !PERMIT_AUTOMATED_DOWNGRADES
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if ([comparator compareVersion:[host version] toVersion:[[NSBundle bundleWithPath:path] objectForInfoDictionaryKey:@"CFBundleVersion"]] == NSOrderedDescending)
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{
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NSString *errorMessage = [NSString stringWithFormat:@"Sparkle Updater: Possible attack in progress! Attempting to \"upgrade\" from %@ to %@. Aborting update.", [host version], [[NSBundle bundleWithPath:path] objectForInfoDictionaryKey:@"CFBundleVersion"]];
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NSError *error = [NSError errorWithDomain:SUSparkleErrorDomain code:SUDowngradeError userInfo:@{ NSLocalizedDescriptionKey: errorMessage }];
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[self finishInstallationToPath:installationPath withResult:NO host:host error:error delegate:delegate];
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return;
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}
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#endif
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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NSError *error = nil;
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NSString *oldPath = [host bundlePath];
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NSString *tempName = [self temporaryNameForPath:[host installationPath]];
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BOOL result = [self copyPathWithAuthentication:path overPath:installationPath temporaryName:tempName error:&error];
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if (result) {
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BOOL haveOld = [[NSFileManager defaultManager] fileExistsAtPath:oldPath];
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BOOL differentFromNew = ![oldPath isEqualToString:installationPath];
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if (haveOld && differentFromNew) {
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[self _movePathToTrash:oldPath]; // On success, trash old copy if there's still one due to renaming.
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}
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}
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dispatch_async(dispatch_get_main_queue(), ^{
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[self finishInstallationToPath:installationPath withResult:result host:host error:error delegate:delegate];
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});
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});
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}
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@end
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