### Handle AltServer Requests

Source: https://context7.com/altstoreio/altstore/llms.txt

Processes app installation and JIT enabling requests from AltStore clients. Requires an active connection and appropriate request objects.

```swift
// AltServer request handling examples

// Handle app preparation request
func handlePrepareAppRequest(_ request: PrepareAppRequest,
                             for connection: Connection,
                             completionHandler: @escaping (Result<InstallationProgressResponse, Error>) -> Void) {
    // 1. Receive the IPA data
    connection.receiveData(expectedSize: request.contentSize) { result in
        let data = try result.get()

        // 2. Write to temporary file
        let tempURL = FileManager.default.temporaryDirectory
            .appendingPathComponent(UUID().uuidString + ".ipa")
        try data.write(to: tempURL)

        // 3. Wait for begin installation request
        connection.receiveRequest() { result in
            switch result {
            case .success(.beginInstallation(let installRequest)):
                // 4. Install the app
                ALTDeviceManager.shared.installApp(
                    at: tempURL,
                    toDeviceWithUDID: request.udid,
                    activeProvisioningProfiles: installRequest.activeProfiles
                ) { result in
                    completionHandler(result.map { _ in
                        InstallationProgressResponse(progress: 1.0)
                    })
                }
            default:
                completionHandler(.failure(ALTServerError(.unknownRequest)))
            }
        }
    }
}

// Handle JIT enable request
func handleEnableUnsignedCodeExecutionRequest(_ request: EnableUnsignedCodeExecutionRequest,
                                               for connection: Connection,
                                               completionHandler: @escaping (Result<EnableUnsignedCodeExecutionResponse, Error>) -> Void) {
    guard let device = ALTDeviceManager.shared.availableDevices
        .first(where: { $0.identifier == request.udid }) else {
        return completionHandler(.failure(ALTServerError(.deviceNotFound)))
    }

    let process: AppProcess
    if let processID = request.processID {
        process = .pid(processID)
    } else if let processName = request.processName {
        process = .name(processName)
    } else {
        return completionHandler(.failure(ALTServerError(.invalidRequest)))
    }

    Task {
        do {
            try await JITManager.shared.enableUnsignedCodeExecution(process: process, device: device)
            completionHandler(.success(EnableUnsignedCodeExecutionResponse()))
        } catch {
            completionHandler(.failure(ALTServerError(error)))
        }
    }
}
```

--------------------------------

### Install Applications via ALTDeviceManager

Source: https://context7.com/altstoreio/altstore/llms.txt

Use ALTDeviceManager to sign and install IPA files onto connected iOS devices using provided Apple ID credentials.

```swift
import AltSign

// Install an app to a connected device
let ipaURL = URL(fileURLWithPath: "/path/to/app.ipa")
let device: ALTDevice = ALTDeviceManager.shared.availableDevices.first!

ALTDeviceManager.shared.installApplication(
    at: ipaURL,
    to: device,
    appleID: "user@example.com",
    password: "app-specific-password"
) { result in
    switch result {
    case .success(let application):
        print("Installed: \(application.name)")
        print("Bundle ID: \(application.bundleIdentifier)")
    case .failure(let error):
        print("Installation failed: \(error.localizedDescription)")
    }
}
```

--------------------------------

### Manage App Lifecycle with AppManager

Source: https://context7.com/altstoreio/altstore/llms.txt

Use the AppManager singleton to perform installation, updates, refreshing of provisioning profiles, and JIT activation. These operations are asynchronous and require a presenting view controller for UI interactions.

```swift
import AltStoreCore
import AltSign

// Access the shared AppManager instance
let appManager = AppManager.shared

// Install an app from a StoreApp
let storeApp: StoreApp = // ... fetched from source
let (task, progress) = await appManager.installAsync(storeApp, presentingViewController: viewController)

do {
    let installedApp = try await task.value
    print("Successfully installed: \(installedApp.wrappedValue.name)")
} catch {
    print("Installation failed: \(error.localizedDescription)")
}

// Update an installed app
let installedApp: InstalledApp = // ... from database
let (updateTask, updateProgress) = await appManager.updateAsync(installedApp, presentingViewController: viewController)

// Refresh apps (resign provisioning profiles)
let appsToRefresh = InstalledApp.fetchActiveApps(in: context)
let group = appManager.refresh(appsToRefresh, presentingViewController: viewController)
group.completionHandler = { results in
    for (bundleID, result) in results {
        switch result {
        case .success(let app):
            print("Refreshed \(app.name)")
        case .failure(let error):
            print("Failed to refresh \(bundleID): \(error)")
        }
    }
}

// Enable JIT for an app
appManager.enableJIT(for: installedApp) { result in
    switch result {
    case .success:
        print("JIT enabled successfully")
    case .failure(let error):
        print("Failed to enable JIT: \(error)")
    }
}
```

--------------------------------

### Manage Core Data Storage

Source: https://context7.com/altstoreio/altstore/llms.txt

Initializes the database and performs CRUD operations on installed apps and store sources. Uses background contexts for asynchronous database tasks.

```swift
import AltStoreCore
import CoreData

// Initialize the database
DatabaseManager.shared.start { error in
    if let error = error {
        print("Database error: \(error)")
    }
}

// Fetch installed apps
let context = DatabaseManager.shared.viewContext
let installedApps = InstalledApp.all(in: context)
for app in installedApps {
    print("\(app.name) - expires: \(app.expirationDate)")
}

// Fetch active apps (count against 3-app limit)
let activeApps = InstalledApp.fetchActiveApps(in: context)

// Fetch apps needing refresh
let fetchRequest = InstalledApp.fetchRequest()
fetchRequest.predicate = NSPredicate(
    format: "%K < %@",
    #keyPath(InstalledApp.expirationDate),
    Date().addingTimeInterval(24 * 60 * 60) as NSDate
)
let appsNeedingRefresh = try context.fetch(fetchRequest)

// Query store apps from sources
let storeAppRequest = StoreApp.fetchRequest()
storeAppRequest.predicate = NSPredicate(
    format: "%K == %@",
    #keyPath(StoreApp.bundleIdentifier),
    "com.example.app"
)
if let storeApp = try context.fetch(storeAppRequest).first {
    print("Found: \(storeApp.name) by \(storeApp.developerName)")
}

// Background context for async operations
DatabaseManager.shared.persistentContainer.performBackgroundTask { context in
    // Perform database operations
    try? context.save()
}
```

--------------------------------

### Handle AltStore URL Schemes in Swift

Source: https://context7.com/altstoreio/altstore/llms.txt

Functions to parse incoming deep links for app installation and source management, posting notifications to the AppDelegate upon successful extraction of parameters.

```swift
// AltStore URL schemes

// Install an app from URL
// altstore://install?url=https://example.com/app.ipa
func handleInstallURL(_ url: URL) {
    guard let components = URLComponents(url: url, resolvingAgainstBaseURL: false),
          let queryItems = components.queryItems,
          let downloadURLString = queryItems.first(where: { $0.name == "url" })?.value,
          let downloadURL = URL(string: downloadURLString) else {
        return
    }

    NotificationCenter.default.post(
        name: AppDelegate.importAppDeepLinkNotification,
        object: nil,
        userInfo: [AppDelegate.importAppDeepLinkURLKey: downloadURL]
    )
}

// Add a source
// altstore://source?url=https://example.com/source.json
func handleSourceURL(_ url: URL) {
    guard let components = URLComponents(url: url, resolvingAgainstBaseURL: false),
          let queryItems = components.queryItems,
          let sourceURLString = queryItems.first(where: { $0.name == "url" })?.value,
          let sourceURL = URL(string: sourceURLString) else {
        return
    }

    NotificationCenter.default.post(
        name: AppDelegate.addSourceDeepLinkNotification,
        object: nil,
        userInfo: [AppDelegate.addSourceDeepLinkURLKey: sourceURL]
    )
}

// Open Patreon settings
// altstore://patreon

// Handle app backup response
// altstore://appbackupresponse/success
// altstore://appbackupresponse/failure?errorDomain=...&errorCode=...&errorDescription=...
```

--------------------------------

### Refresh Provisioning Profile for Installed App

Source: https://context7.com/altstoreio/altstore/llms.txt

Use RefreshAppOperation to refresh an app's provisioning profile without a full reinstall. Requires an AppOperationContext with bundle identifier and authentication context.

```swift
import AltStoreCore
import AltSign

// Create refresh operation context
let context = AppOperationContext(
    bundleIdentifier: installedApp.bundleIdentifier,
    authenticatedContext: authContext
)
context.app = ALTApplication(fileURL: installedApp.fileURL)

// Create and configure the refresh operation
let refreshOperation = RefreshAppOperation(context: context)
refreshOperation.resultHandler = { result in
    switch result {
    case .success(let refreshedApp):
        print("Refreshed \(refreshedApp.name)")
        print("New expiration: \(refreshedApp.expirationDate)")
    case .failure(let error):
        print("Refresh failed: \(error)")
    }
}
```

--------------------------------

### Clone the AltStore Repository

Source: https://github.com/altstoreio/altstore/blob/marketplace/README.md

Initial step to download the project source code from GitHub.

```bash
git clone https://github.com/rileytestut/AltStore.git
```

--------------------------------

### Discover and Connect to AltServer

Source: https://context7.com/altstoreio/altstore/llms.txt

Use ServerManager to discover AltServer instances via mDNS or USB and establish a connection to perform requests like anisette data retrieval.

```swift
import AltStoreCore
import Network

// Start discovering AltServers on the network
ServerManager.shared.startDiscovering()

// Access discovered servers
let servers = ServerManager.shared.discoveredServers
for server in servers {
    print("Found server: \(server.localizedName ?? "Unknown")")
    print("  Connection type: \(server.connectionType)")
    print("  Is preferred: \(server.isPreferred)")
}

// Connect to a specific server
ServerManager.shared.connect(to: server) { result in
    switch result {
    case .success(let connection):
        print("Connected to server!")

        // Send an anisette data request
        let request = AnisetteDataRequest()
        connection.send(request) { sendResult in
            switch sendResult {
            case .success:
                connection.receiveResponse { responseResult in
                    switch responseResult {
                    case .success(.anisetteData(let response)):
                        print("Received anisette data")
                    case .failure(let error):
                        print("Error: \(error)")
                    default:
                        break
                    }
                }
            case .failure(let error):
                print("Send failed: \(error)")
            }
        }

    case .failure(let error):
        print("Connection failed: \(error)")
    }
}

// Stop discovering when done
ServerManager.shared.stopDiscovering()
```

--------------------------------

### Handle App Sources and Manifests

Source: https://context7.com/altstoreio/altstore/llms.txt

Manage app sources by fetching from URLs, adding new sources, and updating existing ones. Sources are defined by a specific JSON manifest structure.

```swift
import AltStoreCore

// Fetch a source from URL
let sourceURL = URL(string: "https://apps.altstore.io/")!
let source = try await AppManager.shared.fetchSource(sourceURL: sourceURL)

print("Source: \(source.name)")
print("Apps: \(source.apps.count)")
for app in source.apps {
    print("- \(app.name) (\(app.bundleIdentifier))")
}

// Add a new source with user confirmation
try await AppManager.shared.add(source,
    message: "Make sure to only add sources that you trust.",
    presentingViewController: viewController)

// Fetch all configured sources
let (sources, context) = try await AppManager.shared.fetchSources()
try context.save()

// Update all sources and check for updates
AppManager.shared.updateAllSources { result in
    switch result {
    case .success:
        print("Sources updated successfully")
    case .failure(let error):
        print("Failed to update sources: \(error)")
    }
}
```

```json
{
    "name": "My Source",
    "identifier": "com.example.source",
    "subtitle": "Custom apps for everyone",
    "description": "A collection of useful apps",
    "iconURL": "https://example.com/icon.png",
    "website": "https://example.com",
    "apps": [
        {
            "name": "My App",
            "bundleIdentifier": "com.example.myapp",
            "developerName": "Developer",
            "subtitle": "A great app",
            "localizedDescription": "Full description here",
            "iconURL": "https://example.com/app-icon.png",
            "screenshotURLs": ["https://example.com/screenshot1.png"],
            "versions": [
                {
                    "version": "1.0",
                    "date": "2024-01-01",
                    "downloadURL": "https://example.com/app.ipa",
                    "size": 10000000
                }
            ]
        }
    ]
}
```

--------------------------------

### Create and launch a privileged task

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

Configures and launches a task with root privileges. The launch call is blocking and triggers a system password prompt.

```objective-c
// Create task
STPrivilegedTask *privilegedTask = [STPrivilegedTask new];
[privilegedTask setLaunchPath:@"/usr/bin/touch"];
[privilegedTask setArguments:@[@"/etc/my_test_file"]];

// Setting working directory is optional, defaults to /
// NSString *path = [[NSBundle mainBundle] resourcePath];
// [privilegedTask setCurrentDirectoryPath:path];

// Launch it, user is prompted for password (blocking)
OSStatus err = [privilegedTask launch];
if (err == errAuthorizationSuccess) {
    NSLog(@"Task successfully launched");
}
else if (err == errAuthorizationCanceled) {
    NSLog(@"User cancelled");
} 
else {
    NSLog(@"Something went wrong");
}
```

--------------------------------

### Run System Information Script

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

This shell script is executed by the sample app to gather user, ID, and directory information. It then exits with a status code of 5.

```shell
#!/bin/sh

echo "/usr/bin/whoami:"
whoami
echo ""
echo "Real User ID:"
echo $UID \($USER\)
echo ""
echo "Effective User ID:"
/usr/bin/id -u
echo ""
echo "Current working directory:"
echo "$PWD"

exit 5

```

--------------------------------

### Launch with external AuthorizationRef

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

Allows providing a custom AuthorizationRef for the task launch.

```objective-c
// ... Create your own AuthorizationRef

[STPrivilegedTask launchedPrivilegedTaskWithLaunchPath:@"/bin/sh"
                                             arguments:@"/path/to/script"
                                      currentDirectory:@"/"
                                         authorization:authRef]
```

--------------------------------

### Launch a privileged task using a one-liner

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

A convenience method for launching a task in a single line.

```objective-c
OSStatus err = [STPrivilegedTask launchedPrivilegedTaskWithLaunchPath:@"/bin/sh" 
                                                            arguments:@[@"/path/to/script.sh"]];
```

--------------------------------

### Observe task termination

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

Demonstrates how to detect when a task finishes using notifications or a termination handler block.

```objective-c
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(privilegedTaskFinished:)
                                             name:STPrivilegedTaskDidTerminateNotification
                                           object:nil];

- (void)privilegedTaskFinished:(NSNotification *)aNotification {
    // Do something
}
```

```objective-c
privilegedTask.terminationHandler = ^(STPrivilegedTask *privilegedTask) {
    NSLog(@"Terminating task: %@", [privilegedTask description]);
};
```

--------------------------------

### Configure Background Fetch Interval

Source: https://context7.com/altstoreio/altstore/llms.txt

Sets the minimum interval for background fetch operations. Also requests user permission for notifications.

```swift
import AltStoreCore
import BackgroundTasks

// Configure background refresh
func prepareForBackgroundFetch() {
    // Register for background fetch
    UIApplication.shared.setMinimumBackgroundFetchInterval(1 * 60 * 60) // 1 hour

    // Request notification permissions
    UNUserNotificationCenter.current().requestAuthorization(
        options: [.alert, .badge, .sound]
    ) { granted, error in
        // Handle permission result
    }
}
```

--------------------------------

### Update Project Submodules

Source: https://github.com/altstoreio/altstore/blob/marketplace/README.md

Initializes and updates all git submodules required for the project.

```bash
cd AltStore 
git submodule update --init --recursive
```

--------------------------------

### Perform Background App Refresh

Source: https://context7.com/altstoreio/altstore/llms.txt

Fetches apps that require refreshing and initiates the background refresh process. Reports success or failure.

```swift
import AltStoreCore
import BackgroundTasks

// Perform background refresh
func performBackgroundRefresh(completion: @escaping (UIBackgroundFetchResult) -> Void) {
    // Fetch apps that need refresh
    DatabaseManager.shared.persistentContainer.performBackgroundTask { context in
        let installedApps = InstalledApp.fetchAppsForBackgroundRefresh(in: context)

        AppManager.shared.backgroundRefresh(installedApps) { result in
            switch result {
            case .success(let results):
                let refreshedCount = results.values.filter {
                    if case .success = $0 { return true }
                    return false
                }.count
                print("Refreshed \(refreshedCount) apps")
                completion(.newData)

            case .failure(let error):
                print("Background refresh failed: \(error)")
                completion(.failed)
            }
        }
    }
}
```

--------------------------------

### Read task output synchronously

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

Blocks execution until the task finishes, then reads the output from the file handle.

```objective-c
// ... Launch task

[privilegedTask waitUntilExit]; // This is blocking

// Read output file handle for data
NSData *outputData = [[privilegedTask outputFileHandle] readDataToEndOfFile];
NSString *outputString = [[NSString alloc] initWithData:outputData encoding:NSUTF8StringEncoding];
```

--------------------------------

### Read task output asynchronously

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

Uses NSNotificationCenter to process output data as it becomes available while the task runs in the background.

```objective-c

// ... Launch task

NSFileHandle *readHandle = [privilegedTask outputFileHandle];
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(getOutputData:)
                                             name:NSFileHandleReadCompletionNotification
                                           object:readHandle];
[readHandle readInBackgroundAndNotify];

// ...

- (void)getOutputData:(NSNotification *)aNotification {
    // Get data from notification
    NSData *data = [[aNotification userInfo] objectForKey:NSFileHandleNotificationDataItem];
    
    // Make sure there's actual data
    if ([data length]) {
        // Do something with the data
        NSString *outputString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        NSLog(@"%@", outputString);

        // Go read more data in the background
        [[aNotification object] readInBackgroundAndNotify];
    } else {
        // Do something else
    }
}
```

--------------------------------

### Authenticate with Apple ID for App Signing

Source: https://context7.com/altstoreio/altstore/llms.txt

Handles Apple ID login with two-factor authentication support for app signing operations. Stores credentials for future operations upon successful authentication.

```swift
import AltStoreCore
import AltSign

// Authenticate with Apple ID
let authContext = AuthenticatedOperationContext()

AppManager.shared.authenticate(
    presentingViewController: viewController,
    context: authContext
) { result in
    switch result {
    case .success(let (team, certificate, session)):
        print("Authenticated!")
        print("Team: \(team.name) (\(team.type))")
        print("Certificate: \(certificate.serialNumber)")

        // Store credentials for future operations
        authContext.team = team
        authContext.certificate = certificate
        authContext.session = session

    case .failure(let error):
        if case ALTAppleAPIError.requiresTwoFactorAuthentication = error {
            print("Please enter your 2FA code")
        } else {
            print("Authentication failed: \(error)")
        }
    }
}
```

--------------------------------

### Check for authorization availability

Source: https://github.com/altstoreio/altstore/blob/marketplace/Pods/STPrivilegedTask/README.md

Methods to verify if the underlying authorization function is available on the current macOS version.

```objective-c
OSStatus err = [privilegedTask launch];
if (err == errAuthorizationFnNoLongerExists) {
    NSLog(@"AuthorizationExecuteWithPrivileges not available");
}
```

```objective-c
BOOL works = [STPrivilegedTask authorizationFunctionAvailable];
```

--------------------------------

### Schedule App Expiration Warning Notification

Source: https://context7.com/altstoreio/altstore/llms.txt

Schedules a local notification to warn the user when an app is about to expire. The notification is set to trigger 24 hours before the expiration date.

```swift
import AltStoreCore
import BackgroundTasks

// Schedule expiration warning notification
func scheduleExpirationWarning(for app: InstalledApp) {
    let notificationDate = app.expirationDate.addingTimeInterval(-24 * 60 * 60)

    let content = UNMutableNotificationContent()
    content.title = "AltStore Expiring Soon"
    content.body = "AltStore will expire in 24 hours. Open the app to refresh."

    let trigger = UNTimeIntervalNotificationTrigger(
        timeInterval: notificationDate.timeIntervalSinceNow,
        repeats: false
    )

    let request = UNNotificationRequest(
        identifier: "expiration-warning",
        content: content,
        trigger: trigger
    )

    UNUserNotificationCenter.current().add(request)
}
```

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