Readd ldid for use on iOS 14

TrollStore/Resources/Info.plist

@@ -191,6 +191,7 @@
 	<key>TSRootBinaries</key>
 	<array>
 		<string>trollstorehelper</string>
+		<string>ldid</string>
 	</array>
 </dict>
 </plist>

TrollStore/TSApplicationsManager.m

@@ -47,11 +47,20 @@ extern NSUserDefaults* trollStoreUserDefaults();
         case 172:
         errorDescription = @"The app does not contain an Info.plist file.";
         break;
+        case 173:
+        errorDescription = @"The app is not signed with a fake CoreTrust certificate and ldid is not installed. Install ldid in the settings tab and try again.";
+        break;
         case 174:
         errorDescription = @"The app's main executable does not exist.";
         break;
-        case 175:
-        errorDescription = @"Failed to sign the app.";
+        case 175: {
+            if (@available(iOS 15, *)) {
+                errorDescription = @"Failed to sign the app.";
+            }
+            else {
+                errorDescription = @"Failed to sign the app. ldid returned a non zero status code.";
+            }
+        }
         break;
         case 176:
         errorDescription = @"The app's Info.plist is missing required values.";

TrollStore/TSInstallationController.h

@@ -9,4 +9,6 @@
 
 + (void)handleAppInstallFromRemoteURL:(NSURL*)remoteURL completion:(void (^)(BOOL, NSError*))completion;
 
++ (void)installLdid;
+
 @end

TrollStore/TSInstallationController.m

@@ -187,4 +187,48 @@ extern NSUserDefaults* trollStoreUserDefaults(void);
 	});
 }
 
++ (void)installLdid
+{
+	fetchLatestLdidVersion(^(NSString* latestVersion)
+	{
+		if(!latestVersion) return;
+		dispatch_async(dispatch_get_main_queue(), ^
+		{
+			NSURL* ldidURL = [NSURL URLWithString:@"https://github.com/opa334/ldid/releases/latest/download/ldid"];
+			NSURLRequest* ldidRequest = [NSURLRequest requestWithURL:ldidURL];
+
+			[TSPresentationDelegate startActivity:@"Installing ldid"];
+
+			NSURLSessionDownloadTask* downloadTask = [NSURLSession.sharedSession downloadTaskWithRequest:ldidRequest completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error)
+			{
+				if(error)
+				{
+					UIAlertController* errorAlert = [UIAlertController alertControllerWithTitle:@"Error" message:[NSString stringWithFormat:@"Error downloading ldid: %@", error] preferredStyle:UIAlertControllerStyleAlert];
+					UIAlertAction* closeAction = [UIAlertAction actionWithTitle:@"Close" style:UIAlertActionStyleDefault handler:nil];
+					[errorAlert addAction:closeAction];
+
+					dispatch_async(dispatch_get_main_queue(), ^
+					{
+						[TSPresentationDelegate stopActivityWithCompletion:^
+						{
+							[TSPresentationDelegate presentViewController:errorAlert animated:YES completion:nil];
+						}];
+					});
+				}
+				else if(location)
+				{
+					spawnRoot(rootHelperPath(), @[@"install-ldid", location.path, latestVersion], nil, nil);
+					dispatch_async(dispatch_get_main_queue(), ^
+					{
+						[TSPresentationDelegate stopActivityWithCompletion:nil];
+						[[NSNotificationCenter defaultCenter] postNotificationName:@"TrollStoreReloadSettingsNotification" object:nil userInfo:nil];
+					});
+				}
+			}];
+
+			[downloadTask resume];
+		});
+	});
+}
+
 @end

TrollStore/TSSceneDelegate.m

@@ -72,6 +72,23 @@
 	}
 }
 
+// We want to auto install ldid if either it doesn't exist
+// or if it's the one from an old TrollStore version that's no longer supported
+- (void)handleLdidCheck
+{
+	if (@available(iOS 15, *)) {} else {
+		NSString* tsAppPath = [NSBundle mainBundle].bundlePath;
+
+		NSString* ldidPath = [tsAppPath stringByAppendingPathComponent:@"ldid"];
+		NSString* ldidVersionPath = [tsAppPath stringByAppendingPathComponent:@"ldid.version"];
+
+		if(![[NSFileManager defaultManager] fileExistsAtPath:ldidPath] || ![[NSFileManager defaultManager] fileExistsAtPath:ldidVersionPath])
+		{
+			[TSInstallationController installLdid];
+		}
+	}
+}
+
 - (void)scene:(UIScene *)scene willConnectToSession:(UISceneSession *)session options:(UISceneConnectionOptions *)connectionOptions {
 	// Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
 	// If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
@@ -87,6 +104,10 @@
 	{
 		[self handleURLContexts:connectionOptions.URLContexts scene:(UIWindowScene*)scene];
 	}
+	else
+	{
+		[self handleLdidCheck];
+	}
 }
 
 

TrollStore/TSSettingsListController.h

@@ -4,5 +4,6 @@
 {
     PSSpecifier* _installPersistenceHelperSpecifier;
     NSString* _newerVersion;
+    NSString* _newerLdidVersion;
 }
 @end

TrollStore/TSSettingsListController.m

@@ -33,6 +33,28 @@ extern NSUserDefaults* trollStoreUserDefaults(void);
 			});
 		}
 	});
+
+	if (@available(iOS 15, *)) {} else {
+		fetchLatestLdidVersion(^(NSString* latestVersion)
+		{
+			NSString* ldidVersionPath = [NSBundle.mainBundle.bundlePath stringByAppendingPathComponent:@"ldid.version"];
+			NSString* ldidVersion = nil;
+			NSData* ldidVersionData = [NSData dataWithContentsOfFile:ldidVersionPath];
+			if(ldidVersionData)
+			{
+				ldidVersion = [[NSString alloc] initWithData:ldidVersionData encoding:NSUTF8StringEncoding];
+			}
+			
+			if(![latestVersion isEqualToString:ldidVersion])
+			{
+				_newerLdidVersion = latestVersion;
+				dispatch_async(dispatch_get_main_queue(), ^
+				{
+					[self reloadSpecifiers];
+				});
+			}
+		});
+	}
 }
 
 - (NSMutableArray*)specifiers
@@ -91,6 +113,84 @@ extern NSUserDefaults* trollStoreUserDefaults(void);
 
 		[_specifiers addObject:rebuildIconCacheSpecifier];
 
+		if (@available(iOS 15, *)) { }
+		else {
+			NSString* ldidPath = [NSBundle.mainBundle.bundlePath stringByAppendingPathComponent:@"ldid"];
+			NSString* ldidVersionPath = [NSBundle.mainBundle.bundlePath stringByAppendingPathComponent:@"ldid.version"];
+			BOOL ldidInstalled = [[NSFileManager defaultManager] fileExistsAtPath:ldidPath];
+
+			NSString* ldidVersion = nil;
+			NSData* ldidVersionData = [NSData dataWithContentsOfFile:ldidVersionPath];
+			if(ldidVersionData)
+			{
+				ldidVersion = [[NSString alloc] initWithData:ldidVersionData encoding:NSUTF8StringEncoding];
+			}
+
+			PSSpecifier* signingGroupSpecifier = [PSSpecifier emptyGroupSpecifier];
+			signingGroupSpecifier.name = @"Signing";
+
+			if(ldidInstalled)
+			{
+				[signingGroupSpecifier setProperty:@"ldid is installed and allows TrollStore to install unsigned IPA files." forKey:@"footerText"];
+			}
+			else
+			{
+				[signingGroupSpecifier setProperty:@"In order for TrollStore to be able to install unsigned IPAs, ldid has to be installed using this button. It can't be directly included in TrollStore because of licensing issues." forKey:@"footerText"];
+			}
+
+			[_specifiers addObject:signingGroupSpecifier];
+
+			if(ldidInstalled)
+			{
+				NSString* installedTitle = @"ldid: Installed";
+				if(ldidVersion)
+				{
+					installedTitle = [NSString stringWithFormat:@"%@ (%@)", installedTitle, ldidVersion];
+				}
+
+				PSSpecifier* ldidInstalledSpecifier = [PSSpecifier preferenceSpecifierNamed:installedTitle
+												target:self
+												set:nil
+												get:nil
+												detail:nil
+												cell:PSStaticTextCell
+												edit:nil];
+				[ldidInstalledSpecifier setProperty:@NO forKey:@"enabled"];
+				ldidInstalledSpecifier.identifier = @"ldidInstalled";
+				[_specifiers addObject:ldidInstalledSpecifier];
+
+				if(_newerLdidVersion && ![_newerLdidVersion isEqualToString:ldidVersion])
+				{
+					NSString* updateTitle = [NSString stringWithFormat:@"Update to %@", _newerLdidVersion];
+					PSSpecifier* ldidUpdateSpecifier = [PSSpecifier preferenceSpecifierNamed:updateTitle
+												target:self
+												set:nil
+												get:nil
+												detail:nil
+												cell:PSButtonCell
+												edit:nil];
+					ldidUpdateSpecifier.identifier = @"updateLdid";
+					[ldidUpdateSpecifier setProperty:@YES forKey:@"enabled"];
+					ldidUpdateSpecifier.buttonAction = @selector(installOrUpdateLdidPressed);
+					[_specifiers addObject:ldidUpdateSpecifier];
+				}
+			}
+			else
+			{
+				PSSpecifier* installLdidSpecifier = [PSSpecifier preferenceSpecifierNamed:@"Install ldid"
+												target:self
+												set:nil
+												get:nil
+												detail:nil
+												cell:PSButtonCell
+												edit:nil];
+				installLdidSpecifier.identifier = @"installLdid";
+				[installLdidSpecifier setProperty:@YES forKey:@"enabled"];
+				installLdidSpecifier.buttonAction = @selector(installOrUpdateLdidPressed);
+				[_specifiers addObject:installLdidSpecifier];
+			}
+		}
+
 		PSSpecifier* persistenceGroupSpecifier = [PSSpecifier emptyGroupSpecifier];
 		persistenceGroupSpecifier.name = @"Persistence";
 		[_specifiers addObject:persistenceGroupSpecifier];
@@ -265,6 +365,11 @@ extern NSUserDefaults* trollStoreUserDefaults(void);
 	respring();
 }
 
+- (void)installOrUpdateLdidPressed
+{
+	[TSInstallationController installLdid];
+}
+
 - (void)installPersistenceHelperPressed
 {
 	NSMutableArray* appCandidates = [NSMutableArray new];