1 files changed, 200 insertions, 0 deletions
diff --git a/WireGuard/WireGuard/UI/iOS/ViewController/SettingsTableViewController.swift b/WireGuard/WireGuard/UI/iOS/ViewController/SettingsTableViewController.swift
new file mode 100644
index 0000000..b583c5b
--- /dev/null
+++ b/WireGuard/WireGuard/UI/iOS/ViewController/SettingsTableViewController.swift
@@ -0,0 +1,200 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import UIKit
+import os.log
+
+class SettingsTableViewController: UITableViewController {
+
+    enum SettingsFields: String {
+        case iosAppVersion = "WireGuard for iOS"
+        case goBackendVersion = "WireGuard Go Backend"
+        case exportZipArchive = "Export zip archive"
+        case exportLogFile = "Export log file"
+    }
+
+    let settingsFieldsBySection: [[SettingsFields]] = [
+        [.iosAppVersion, .goBackendVersion],
+        [.exportZipArchive],
+        [.exportLogFile]
+    ]
+
+    let tunnelsManager: TunnelsManager?
+    var wireguardCaptionedImage: (view: UIView, size: CGSize)?
+
+    init(tunnelsManager: TunnelsManager?) {
+        self.tunnelsManager = tunnelsManager
+        super.init(style: .grouped)
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        title = "Settings"
+        navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(doneTapped))
+
+        tableView.estimatedRowHeight = 44
+        tableView.rowHeight = UITableView.automaticDimension
+        tableView.allowsSelection = false
+
+        tableView.register(KeyValueCell.self)
+        tableView.register(ButtonCell.self)
+
+        tableView.tableFooterView = UIImageView(image: UIImage(named: "wireguard.pdf"))
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        guard let logo = tableView.tableFooterView else { return }
+        
+        let bottomPadding = max(tableView.layoutMargins.bottom, 10)
+        let fullHeight = max(tableView.contentSize.height, tableView.bounds.size.height - tableView.layoutMargins.top - bottomPadding)
+        
+        let imageAspectRatio = logo.intrinsicContentSize.width / logo.intrinsicContentSize.height
+        
+        var height = tableView.estimatedRowHeight * 1.5
+        var width = height * imageAspectRatio
+        let maxWidth = view.bounds.size.width - max(tableView.layoutMargins.left + tableView.layoutMargins.right, 20)
+        if width > maxWidth {
+            width = maxWidth
+            height = width / imageAspectRatio
+        }
+        
+        let needsReload = height != logo.frame.height
+        
+        logo.frame = CGRect(x: (view.bounds.size.width - width) / 2, y: fullHeight - height, width: width, height: height)
+        
+        if needsReload {
+            tableView.tableFooterView = logo
+        }
+    }
+
+    @objc func doneTapped() {
+        dismiss(animated: true, completion: nil)
+    }
+
+    func exportConfigurationsAsZipFile(sourceView: UIView) {
+        guard let tunnelsManager = tunnelsManager else { return }
+        guard let destinationDir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else { return }
+
+        let destinationURL = destinationDir.appendingPathComponent("wireguard-export.zip")
+        _ = FileManager.deleteFile(at: destinationURL)
+
+        let count = tunnelsManager.numberOfTunnels()
+        let tunnelConfigurations = (0 ..< count).compactMap { tunnelsManager.tunnel(at: $0).tunnelConfiguration() }
+        ZipExporter.exportConfigFiles(tunnelConfigurations: tunnelConfigurations, to: destinationURL) { [weak self] error in
+            if let error = error {
+                ErrorPresenter.showErrorAlert(error: error, from: self)
+                return
+            }
+
+            let fileExportVC = UIDocumentPickerViewController(url: destinationURL, in: .exportToService)
+            self?.present(fileExportVC, animated: true, completion: nil)
+        }
+    }
+
+    func exportLogForLastActivatedTunnel(sourceView: UIView) {
+        guard let destinationDir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else { return }
+
+        let dateFormatter = ISO8601DateFormatter()
+        dateFormatter.formatOptions = [.withFullDate, .withTime, .withTimeZone] // Avoid ':' in the filename
+        let timeStampString = dateFormatter.string(from: Date())
+        let destinationURL = destinationDir.appendingPathComponent("wireguard-log-\(timeStampString).txt")
+
+        DispatchQueue.global(qos: .userInitiated).async {
+
+            if FileManager.default.fileExists(atPath: destinationURL.path) {
+                let isDeleted = FileManager.deleteFile(at: destinationURL)
+                if !isDeleted {
+                    ErrorPresenter.showErrorAlert(title: "Log export failed", message: "The pre-existing log could not be cleared", from: self)
+                    return
+                }
+            }
+
+            guard let networkExtensionLogFilePath = FileManager.networkExtensionLogFileURL?.path else {
+                ErrorPresenter.showErrorAlert(title: "Log export failed", message: "Unable to determine extension log path", from: self)
+                return
+            }
+
+            let isWritten = Logger.global?.writeLog(called: "APP", mergedWith: networkExtensionLogFilePath, called: "NET", to: destinationURL.path) ?? false
+            guard isWritten else {
+                ErrorPresenter.showErrorAlert(title: "Log export failed", message: "Unable to write logs to file", from: self)
+                return
+            }
+
+            DispatchQueue.main.async {
+                let activityVC = UIActivityViewController(activityItems: [destinationURL], applicationActivities: nil)
+                // popoverPresentationController shall be non-nil on the iPad
+                activityVC.popoverPresentationController?.sourceView = sourceView
+                activityVC.popoverPresentationController?.sourceRect = sourceView.bounds
+                activityVC.completionWithItemsHandler = { _, _, _, _ in
+                    // Remove the exported log file after the activity has completed
+                    _ = FileManager.deleteFile(at: destinationURL)
+                }
+                self.present(activityVC, animated: true)
+            }
+        }
+    }
+}
+
+// MARK: UITableViewDataSource
+
+extension SettingsTableViewController {
+    override func numberOfSections(in tableView: UITableView) -> Int {
+        return settingsFieldsBySection.count
+    }
+
+    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        return settingsFieldsBySection[section].count
+    }
+
+    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+        switch section {
+        case 0:
+            return "About"
+        case 1:
+            return "Export configurations"
+        case 2:
+            return "Tunnel log"
+        default:
+            return nil
+        }
+    }
+
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let field = settingsFieldsBySection[indexPath.section][indexPath.row]
+        if field == .iosAppVersion || field == .goBackendVersion {
+            let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
+            cell.copyableGesture = false
+            cell.key = field.rawValue
+            if field == .iosAppVersion {
+                var appVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "Unknown version"
+                if let appBuild = Bundle.main.infoDictionary?["CFBundleVersion"] as? String {
+                    appVersion += " (\(appBuild))"
+                }
+                cell.value = appVersion
+            } else if field == .goBackendVersion {
+                cell.value = WIREGUARD_GO_VERSION
+            }
+            return cell
+        } else if field == .exportZipArchive {
+            let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
+            cell.buttonText = field.rawValue
+            cell.onTapped = { [weak self] in
+                self?.exportConfigurationsAsZipFile(sourceView: cell.button)
+            }
+            return cell
+        } else {
+            assert(field == .exportLogFile)
+            let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
+            cell.buttonText = field.rawValue
+            cell.onTapped = { [weak self] in
+                self?.exportLogForLastActivatedTunnel(sourceView: cell.button)
+            }
+            return cell
+        }
+    }
+}