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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"
}
let settingsFieldsBySection : [[SettingsFields]] = [
[.iosAppVersion, .goBackendVersion],
[.exportZipArchive]
]
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()
self.title = "Settings"
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(doneTapped))
self.tableView.rowHeight = 44
self.tableView.allowsSelection = false
self.tableView.register(TunnelSettingsTableViewKeyValueCell.self, forCellReuseIdentifier: TunnelSettingsTableViewKeyValueCell.id)
self.tableView.register(TunnelSettingsTableViewButtonCell.self, forCellReuseIdentifier: TunnelSettingsTableViewButtonCell.id)
let logo = UIImageView(image: UIImage(named: "wireguard.pdf", in: Bundle.main, compatibleWith: nil)!)
logo.contentMode = .scaleAspectFit
let height = self.tableView.rowHeight * 1.5
let width = height * logo.image!.size.width / logo.image!.size.height
logo.frame = CGRect(x: 0, y: 0, width: width, height: height)
logo.bounds = logo.frame.insetBy(dx: 2, dy: 2)
self.tableView.tableFooterView = logo
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
guard let logo = self.tableView.tableFooterView else { return }
let fullHeight = max(self.tableView.contentSize.height, self.tableView.bounds.size.height - self.tableView.layoutMargins.top)
let e = logo.frame
let padding = CGFloat(10)
logo.frame = CGRect(x: e.minX, y: fullHeight - e.height - padding, width: e.width, height: e.height)
}
@objc func doneTapped() {
dismiss(animated: true, completion: nil)
}
func exportConfigurationsAsZipFile(sourceView: UIView) {
guard let tunnelsManager = tunnelsManager, tunnelsManager.numberOfTunnels() > 0 else {
showErrorAlert(title: "Nothing to export", message: "There are no tunnels to export")
return
}
var inputsToArchiver: [(fileName: String, contents: Data)] = []
var usedNames: Set<String> = []
for i in 0 ..< tunnelsManager.numberOfTunnels() {
guard let tunnelConfiguration = tunnelsManager.tunnel(at: i).tunnelConfiguration() else { continue }
if let contents = WgQuickConfigFileWriter.writeConfigFile(from: tunnelConfiguration) {
let name = tunnelConfiguration.interface.name
var nameToCheck = name
var i = 0
while (usedNames.contains(nameToCheck)) {
i = i + 1
nameToCheck = "\(name)\(i)"
}
usedNames.insert(nameToCheck)
inputsToArchiver.append((fileName: "\(nameToCheck).conf", contents: contents))
}
}
guard let destinationDir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else {
return
}
let destinationURL = destinationDir.appendingPathComponent("wireguard-export.zip")
do {
try FileManager.default.removeItem(at: destinationURL)
} catch {
os_log("Failed to delete file: %{public}@ : %{public}@", log: OSLog.default, type: .error, destinationURL.absoluteString, error.localizedDescription)
}
do {
try ZipArchive.archive(inputs: inputsToArchiver, to: destinationURL)
let activityVC = UIActivityViewController(activityItems: [destinationURL], applicationActivities: nil)
// popoverPresentationController shall be non-nil on the iPad
activityVC.popoverPresentationController?.sourceView = sourceView
present(activityVC, animated: true)
} catch (let error) {
showErrorAlert(title: "Unable to export", message: "There was an error exporting the tunnel configuration archive: \(String(describing: error))")
}
}
func showErrorAlert(title: String, message: String) {
let okAction = UIAlertAction(title: "OK", style: .default)
let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
alert.addAction(okAction)
self.present(alert, animated: true, completion: nil)
}
}
// 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"
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 = tableView.dequeueReusableCell(withIdentifier: TunnelSettingsTableViewKeyValueCell.id, for: indexPath) as! TunnelSettingsTableViewKeyValueCell
cell.key = field.rawValue
if (field == .iosAppVersion) {
let appVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "Unknown version"
cell.value = appVersion
} else if (field == .goBackendVersion) {
cell.value = WIREGUARD_GO_VERSION
}
return cell
} else {
assert(field == .exportZipArchive)
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelSettingsTableViewButtonCell.id, for: indexPath) as! TunnelSettingsTableViewButtonCell
cell.buttonText = field.rawValue
cell.onTapped = { [weak self] in
self?.exportConfigurationsAsZipFile(sourceView: cell.button)
}
return cell
}
}
}
class TunnelSettingsTableViewKeyValueCell: UITableViewCell {
static let id: String = "TunnelSettingsTableViewKeyValueCell"
var key: String {
get { return textLabel?.text ?? "" }
set(value) { textLabel?.text = value }
}
var value: String {
get { return detailTextLabel?.text ?? "" }
set(value) { detailTextLabel?.text = value }
}
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: .value1, reuseIdentifier: TunnelSettingsTableViewKeyValueCell.id)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
}
}
class TunnelSettingsTableViewButtonCell: UITableViewCell {
static let id: String = "TunnelSettingsTableViewButtonCell"
var buttonText: String {
get { return button.title(for: .normal) ?? "" }
set(value) { button.setTitle(value, for: .normal) }
}
var onTapped: (() -> Void)?
let button: UIButton
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
button = UIButton(type: .system)
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(button)
button.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
button.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
button.centerXAnchor.constraint(equalTo: contentView.centerXAnchor)
])
button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
}
@objc func buttonTapped() {
onTapped?()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
buttonText = ""
onTapped = nil
}
}
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