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// 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(SettingsKeyValueCell.self)
tableView.register(SettingsButtonCell.self)
tableView.tableFooterView = UIImageView(image: UIImage(named: "wireguard.pdf"))
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
guard let logo = self.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(mergedWith: networkExtensionLogFilePath, 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: SettingsKeyValueCell = tableView.dequeueReusableCell(for: indexPath)
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: SettingsButtonCell = 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: SettingsButtonCell = tableView.dequeueReusableCell(for: indexPath)
cell.buttonText = field.rawValue
cell.onTapped = { [weak self] in
self?.exportLogForLastActivatedTunnel(sourceView: cell.button)
}
return cell
}
}
}
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