The finish_installation tool will not relaunch the host app if it's using the "Install on Quit" functionality.

Author: andymatuschak

SUAutomaticUpdateDriver.m

@@ -44,7 +44,7 @@ - (void)automaticUpdateAlert:(SUAutomaticUpdateAlert *)aua finishedWithChoice:(S
 	switch (choice)
 	{
 		case SUInstallNowChoice:
-			[self installUpdate];
+			[self installWithToolAndRelaunch:YES];
 			break;
 
 		case SUInstallLaterChoice:
@@ -61,15 +61,15 @@ - (void)automaticUpdateAlert:(SUAutomaticUpdateAlert *)aua finishedWithChoice:(S
 
 - (BOOL)shouldInstallSynchronously { return postponingInstallation; }
 
-- (void)installUpdate
+- (void)installWithToolAndRelaunch:(BOOL)relaunch
 {
 	showErrors = YES;
-	[super installUpdate];
+	[super installWithToolAndRelaunch:relaunch];
 }
 
 - (void)applicationWillTerminate:(NSNotification *)note
 {
-	[self installUpdate];
+	[self installWithToolAndRelaunch:NO];
 }
 
 - (void)abortUpdateWithError:(NSError *)error

SUBasicUpdateDriver.h

@@ -46,10 +46,10 @@
 - (void)unarchiverDidFail:(SUUnarchiver *)ua;
 - (void)failedToApplyDeltaUpdate;
 
-- (void)installUpdate;
+- (void)installWithToolAndRelaunch:(BOOL)relaunch;
 - (void)installerForHost:(SUHost *)host failedWithError:(NSError *)error;
 
-- (void)installAndRelaunchWithTool;
+- (void)installWithToolAndRelaunch:(BOOL)relaunch;
 - (void)cleanUpDownload;
 
 - (void)abortUpdate;

SUBasicUpdateDriver.m

@@ -237,7 +237,7 @@ - (void)failedToApplyDeltaUpdate
 - (void)unarchiverDidFinish:(SUUnarchiver *)ua
 {
 	if (ua) { CFRelease(ua); }
-	[self installUpdate];
+	[self installWithToolAndRelaunch:YES];
 }
 
 - (void)unarchiverDidFail:(SUUnarchiver *)ua
@@ -254,8 +254,28 @@ - (void)unarchiverDidFail:(SUUnarchiver *)ua
 
 - (BOOL)shouldInstallSynchronously { return NO; }
 
-- (void)installUpdate
+- (void)installWithToolAndRelaunch:(BOOL)relaunch
 {
+    if (![updater mayUpdateAndRestart])
+    {
+        [self abortUpdate];
+        return;
+    }
+    
+    // Give the host app an opportunity to postpone the install and relaunch.
+    static BOOL postponedOnce = NO;
+    if (!postponedOnce && [[updater delegate] respondsToSelector:@selector(updater:shouldPostponeRelaunchForUpdate:untilInvoking:)])
+    {
+        NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[[self class] instanceMethodSignatureForSelector:@selector(installWithToolAndRelaunch:)]];
+        [invocation setSelector:@selector(installWithToolAndRelaunch:)];
+        [invocation setArgument:&relaunch atIndex:0];
+        [invocation setTarget:self];
+        postponedOnce = YES;
+        if ([[updater delegate] updater:updater shouldPostponeRelaunchForUpdate:updateItem untilInvoking:invocation])
+            return;
+    }
+
+    
 	if ([[updater delegate] respondsToSelector:@selector(updater:willInstallUpdate:)])
 		[[updater delegate] updater:updater willInstallUpdate:updateItem];
 
@@ -276,49 +296,25 @@ - (void)installUpdate
 	else
 		[self abortUpdateWithError:[NSError errorWithDomain:SUSparkleErrorDomain code:SURelaunchError userInfo:[NSDictionary dictionaryWithObjectsAndKeys:SULocalizedString(@"An error occurred while extracting the archive. Please try again later.", nil), NSLocalizedDescriptionKey, [NSString stringWithFormat:@"Couldn't copy relauncher (%@) to temporary path (%@)! %@", relaunchPathToCopy, targetPath, (error ? [error localizedDescription] : @"")], NSLocalizedFailureReasonErrorKey, nil]]];
 
-	[self installAndRelaunchWithTool];
-}
-
-- (void)installAndRelaunchWithTool
-{
-	BOOL mayRelaunchAtAll = [updater mayUpdateAndRestart];
+    [[NSNotificationCenter defaultCenter] postNotificationName:SUUpdaterWillRestartNotification object:self];
+    if ([[updater delegate] respondsToSelector:@selector(updaterWillRelaunchApplication:)])
+        [[updater delegate] updaterWillRelaunchApplication:updater];
+
+    if(!relaunchPath || ![[NSFileManager defaultManager] fileExistsAtPath:relaunchPath])
+    {
+        // Note that we explicitly use the host app's name here, since updating plugin for Mail relaunches Mail, not just the plugin.
+        [self abortUpdateWithError:[NSError errorWithDomain:SUSparkleErrorDomain code:SURelaunchError userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:SULocalizedString(@"An error occurred while relaunching %1$@, but the new version will be available next time you run %1$@.", nil), [host name]], NSLocalizedDescriptionKey, [NSString stringWithFormat:@"Couldn't find the relauncher (expected to find it at %@)", relaunchPath], NSLocalizedFailureReasonErrorKey, nil]]];
+        // We intentionally don't abandon the update here so that the host won't initiate another.
+        return;
+    }		
+    
+    NSString *pathToRelaunch = [host bundlePath];
+    if ([[updater delegate] respondsToSelector:@selector(pathToRelaunchForUpdater:)])
+        pathToRelaunch = [[updater delegate] pathToRelaunchForUpdater:updater];
+    NSString *relaunchToolPath = [relaunchPath stringByAppendingPathComponent: @"/Contents/MacOS/finish_installation"];
+    [NSTask launchedTaskWithLaunchPath: relaunchToolPath arguments:[NSArray arrayWithObjects:pathToRelaunch, [NSString stringWithFormat:@"%d", [[NSProcessInfo processInfo] processIdentifier]], tempDir, relaunch ? @"1" : @"0", nil]];
 
-	if( mayRelaunchAtAll )
-	{
-		// Give the host app an opportunity to postpone the relaunch.
-		static BOOL postponedOnce = NO;
-		if (!postponedOnce && [[updater delegate] respondsToSelector:@selector(updater:shouldPostponeRelaunchForUpdate:untilInvoking:)])
-		{
-			NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[[self class] instanceMethodSignatureForSelector:@selector(installAndRelaunchWithTool)]];
-			[invocation setSelector:@selector(installAndRelaunchWithTool)];
-			[invocation setTarget:self];
-			postponedOnce = YES;
-			if ([[updater delegate] updater:updater shouldPostponeRelaunchForUpdate:updateItem untilInvoking:invocation])
-				return;
-		}
-	
-		[[NSNotificationCenter defaultCenter] postNotificationName:SUUpdaterWillRestartNotification object:self];
-		if ([[updater delegate] respondsToSelector:@selector(updaterWillRelaunchApplication:)])
-			[[updater delegate] updaterWillRelaunchApplication:updater];
-	
-		if(!relaunchPath || ![[NSFileManager defaultManager] fileExistsAtPath:relaunchPath])
-		{
-			// Note that we explicitly use the host app's name here, since updating plugin for Mail relaunches Mail, not just the plugin.
-			[self abortUpdateWithError:[NSError errorWithDomain:SUSparkleErrorDomain code:SURelaunchError userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:SULocalizedString(@"An error occurred while relaunching %1$@, but the new version will be available next time you run %1$@.", nil), [host name]], NSLocalizedDescriptionKey, [NSString stringWithFormat:@"Couldn't find the relauncher (expected to find it at %@)", relaunchPath], NSLocalizedFailureReasonErrorKey, nil]]];
-			// We intentionally don't abandon the update here so that the host won't initiate another.
-			return;
-		}		
-		
-		NSString *pathToRelaunch = [host bundlePath];
-		if ([[updater delegate] respondsToSelector:@selector(pathToRelaunchForUpdater:)])
-			pathToRelaunch = [[updater delegate] pathToRelaunchForUpdater:updater];
-		NSString	*relaunchToolPath = [relaunchPath stringByAppendingPathComponent: @"/Contents/MacOS/finish_installation"];
-		[NSTask launchedTaskWithLaunchPath: relaunchToolPath arguments:[NSArray arrayWithObjects:pathToRelaunch, [NSString stringWithFormat:@"%d", [[NSProcessInfo processInfo] processIdentifier]], tempDir, nil]];
-
-		[NSApp terminate:self];
-	}
-	else
-		[self abortUpdate];
+    [NSApp terminate:self];
 }
 
 - (void)cleanUpDownload

SUUIBasedUpdateDriver.m

@@ -162,15 +162,14 @@ - (void)unarchiverDidFinish:(SUUnarchiver *)ua
 
 - (void)installAndRestart: (id)sender
 {
-	if( [updater mayUpdateAndRestart] )
-		[self installUpdate];
+    [self installWithToolAndRelaunch:YES];
 }
 
-- (void)installUpdate
+- (void)installWithToolAndRelaunch:(BOOL)relaunch
 {
 	[statusController beginActionWithTitle:SULocalizedString(@"Installing update...", @"Take care not to overflow the status window.") maxProgressValue:0.0 statusText:nil];
 	[statusController setButtonEnabled:NO];
-	[super installUpdate];
+	[super installWithToolAndRelaunch:relaunch];
 
 
 	// if a user chooses to NOT relaunch the app (as is the case with WebKit

finish_installation.m

@@ -21,6 +21,7 @@ @interface TerminationListener : NSObject
 	NSTimer			*watchdogTimer;
 	NSTimer			*longInstallationTimer;
 	SUHost			*host;
+    BOOL            shouldRelaunch;
 }
 
 - (void) parentHasQuit;
@@ -35,7 +36,7 @@ - (void) watchdog:(NSTimer *)aTimer;
 
 @implementation TerminationListener
 
-- (id) initWithExecutablePath:(const char *)execpath parentProcessId:(pid_t)ppid folderPath: (const char*)infolderpath
+- (id) initWithExecutablePath:(const char *)execpath parentProcessId:(pid_t)ppid folderPath: (const char*)infolderpath shouldRelaunch:(BOOL)relaunch
 		selfPath: (NSString*)inSelfPath
 {
 	if( !(self = [super init]) )
@@ -45,6 +46,7 @@ - (id) initWithExecutablePath:(const char *)execpath parentProcessId:(pid_t)ppid
 	parentprocessid	= ppid;
 	folderpath		= infolderpath;
 	selfPath		= [inSelfPath retain];
+    shouldRelaunch  = relaunch;
 
 	BOOL	alreadyTerminated = (getppid() == 1); // ppid is launchd (1) => parent terminated already
 
@@ -105,23 +107,27 @@ - (void)showAppIconInDock:(NSTimer *)aTimer;
 
 - (void) relaunch
 {
-	NSString	*appPath = nil;
-	if( !folderpath )
-		appPath = [[NSFileManager defaultManager] stringWithFileSystemRepresentation:executablepath length:strlen(executablepath)];
-	else
-		appPath = [host installationPath];
-	[[NSWorkspace sharedWorkspace] openFile: appPath];
-	if( folderpath )
-	{
-		NSError*		theError = nil;
-    	if( ![SUPlainInstaller _removeFileAtPath: [SUInstaller updateFolder] error: &theError] )
-			SULog( @"Couldn't remove update folder: %@.", theError );
-	}
-#if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4
-    [[NSFileManager defaultManager] removeFileAtPath: selfPath handler: nil];
-#else
-	[[NSFileManager defaultManager] removeItemAtPath: selfPath error: NULL];
-#endif
+    if (shouldRelaunch)
+    {
+        NSString	*appPath = nil;
+        if( !folderpath )
+            appPath = [[NSFileManager defaultManager] stringWithFileSystemRepresentation:executablepath length:strlen(executablepath)];
+        else
+            appPath = [host installationPath];
+        [[NSWorkspace sharedWorkspace] openFile: appPath];
+        if( folderpath )
+        {
+            NSError*		theError = nil;
+            if( ![SUPlainInstaller _removeFileAtPath: [SUInstaller updateFolder] error: &theError] )
+                SULog( @"Couldn't remove update folder: %@.", theError );
+        }
+    #if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4
+        [[NSFileManager defaultManager] removeFileAtPath: selfPath handler: nil];
+    #else
+        [[NSFileManager defaultManager] removeItemAtPath: selfPath error: NULL];
+    #endif
+    }
+    
 	exit(EXIT_SUCCESS);
 }
 
@@ -158,7 +164,7 @@ - (void) installerForHost:(SUHost *)host failedWithError:(NSError *)error
 
 int main (int argc, const char * argv[])
 {
-	if( argc < 3 || argc > 4 )
+	if( argc < 4 || argc > 5 )
 		return EXIT_FAILURE;
 
 	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
@@ -182,9 +188,10 @@ int main (int argc, const char * argv[])
 
 	[NSApplication sharedApplication];
 	[[[TerminationListener alloc] initWithExecutablePath: (argc > 1) ? argv[1] : NULL
-										parentProcessId: (argc > 2) ? atoi(argv[2]) : 0
-										folderPath: (argc > 3) ? argv[3] : NULL
-										selfPath: selfPath] autorelease];
+                                         parentProcessId: (argc > 2) ? atoi(argv[2]) : 0
+                                              folderPath: (argc > 3) ? argv[3] : NULL
+                                          shouldRelaunch: (argc > 4) ? atoi(argv[4]) : 1
+                                                selfPath: selfPath] autorelease];
 	[[NSApplication sharedApplication] run];
 
 	[pool drain];