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// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import UIKit
// MARK: TunnelDetailTableViewController
class TunnelDetailTableViewController: UITableViewController {
let interfaceFields: [TunnelViewModel.InterfaceField] = [
.name, .publicKey, .addresses,
.listenPort, .mtu, .dns
]
let peerFields: [TunnelViewModel.PeerField] = [
.publicKey, .preSharedKey, .endpoint,
.allowedIPs, .persistentKeepAlive
]
let tunnelsManager: TunnelsManager
let tunnel: TunnelContainer
var tunnelViewModel: TunnelViewModel
init(tunnelsManager: TunnelsManager, tunnel: TunnelContainer) {
self.tunnelsManager = tunnelsManager
self.tunnel = tunnel
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
super.init(style: .grouped)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
self.title = tunnelViewModel.interfaceData[.name]
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(editTapped))
self.tableView.estimatedRowHeight = 44
self.tableView.rowHeight = UITableView.automaticDimension
self.tableView.allowsSelection = false
self.tableView.register(TunnelDetailTableViewStatusCell.self, forCellReuseIdentifier: TunnelDetailTableViewStatusCell.reuseIdentifier)
self.tableView.register(TunnelDetailTableViewKeyValueCell.self, forCellReuseIdentifier: TunnelDetailTableViewKeyValueCell.reuseIdentifier)
self.tableView.register(TunnelDetailTableViewButtonCell.self, forCellReuseIdentifier: TunnelDetailTableViewButtonCell.reuseIdentifier)
self.tableView.register(TunnelDetailTableViewActivateOnDemandCell.self, forCellReuseIdentifier: TunnelDetailTableViewActivateOnDemandCell.reuseIdentifier)
// State restoration
self.restorationIdentifier = "TunnelDetailVC:\(tunnel.name)"
}
@objc func editTapped() {
let editVC = TunnelEditTableViewController(tunnelsManager: tunnelsManager, tunnel: tunnel)
editVC.delegate = self
let editNC = UINavigationController(rootViewController: editVC)
editNC.modalPresentationStyle = .formSheet
present(editNC, animated: true)
}
func showConfirmationAlert(message: String, buttonTitle: String, from sourceView: UIView,
onConfirmed: @escaping (() -> Void)) {
let destroyAction = UIAlertAction(title: buttonTitle, style: .destructive) { (_) in
onConfirmed()
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
let alert = UIAlertController(title: "", message: message, preferredStyle: .actionSheet)
alert.addAction(destroyAction)
alert.addAction(cancelAction)
// popoverPresentationController will be nil on iPhone and non-nil on iPad
alert.popoverPresentationController?.sourceView = sourceView
alert.popoverPresentationController?.sourceRect = sourceView.bounds
self.present(alert, animated: true, completion: nil)
}
}
// MARK: TunnelEditTableViewControllerDelegate
extension TunnelDetailTableViewController: TunnelEditTableViewControllerDelegate {
func tunnelSaved(tunnel: TunnelContainer) {
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
self.title = tunnel.name
self.tableView.reloadData()
}
func tunnelEditingCancelled() {
// Nothing to do
}
}
// MARK: UITableViewDataSource
extension TunnelDetailTableViewController {
override func numberOfSections(in tableView: UITableView) -> Int {
return 4 + tunnelViewModel.peersData.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let interfaceData = tunnelViewModel.interfaceData
let numberOfPeerSections = tunnelViewModel.peersData.count
if section == 0 {
// Status
return 1
} else if section == 1 {
// Interface
return interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFields).count
} else if (numberOfPeerSections > 0) && (section < (2 + numberOfPeerSections)) {
// Peer
let peerData = tunnelViewModel.peersData[section - 2]
return peerData.filterFieldsWithValueOrControl(peerFields: peerFields).count
} else if section < (3 + numberOfPeerSections) {
// Activate on demand
return 1
} else {
assert(section == (3 + numberOfPeerSections))
// Delete tunnel
return 1
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
let numberOfPeerSections = tunnelViewModel.peersData.count
if section == 0 {
// Status
return "Status"
} else if section == 1 {
// Interface
return "Interface"
} else if (numberOfPeerSections > 0) && (section < (2 + numberOfPeerSections)) {
// Peer
return "Peer"
} else if section < (3 + numberOfPeerSections) {
// On-Demand Activation
return "On-Demand Activation"
} else {
// Delete tunnel
return nil
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let interfaceData = tunnelViewModel.interfaceData
let numberOfPeerSections = tunnelViewModel.peersData.count
let section = indexPath.section
let row = indexPath.row
if section == 0 {
// Status
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewStatusCell.reuseIdentifier, for: indexPath) as! TunnelDetailTableViewStatusCell
cell.tunnel = self.tunnel
cell.onSwitchToggled = { [weak self] isOn in
guard let self = self else { return }
if isOn {
self.tunnelsManager.startActivation(of: self.tunnel) { [weak self] error in
if let error = error {
ErrorPresenter.showErrorAlert(error: error, from: self, onPresented: {
DispatchQueue.main.async {
cell.statusSwitch.isOn = false
}
})
}
}
} else {
self.tunnelsManager.startDeactivation(of: self.tunnel)
}
}
return cell
} else if section == 1 {
// Interface
let field = interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFields)[row]
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewKeyValueCell.reuseIdentifier, for: indexPath) as! TunnelDetailTableViewKeyValueCell
// Set key and value
cell.key = field.rawValue
cell.value = interfaceData[field]
return cell
} else if (numberOfPeerSections > 0) && (section < (2 + numberOfPeerSections)) {
// Peer
let peerData = tunnelViewModel.peersData[section - 2]
let field = peerData.filterFieldsWithValueOrControl(peerFields: peerFields)[row]
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewKeyValueCell.reuseIdentifier, for: indexPath) as! TunnelDetailTableViewKeyValueCell
// Set key and value
cell.key = field.rawValue
cell.value = peerData[field]
return cell
} else if section < (3 + numberOfPeerSections) {
// On-Demand Activation
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewActivateOnDemandCell.reuseIdentifier, for: indexPath) as! TunnelDetailTableViewActivateOnDemandCell
cell.tunnel = self.tunnel
return cell
} else {
assert(section == (3 + numberOfPeerSections))
// Delete configuration
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewButtonCell.reuseIdentifier, for: indexPath) as! TunnelDetailTableViewButtonCell
cell.buttonText = "Delete tunnel"
cell.hasDestructiveAction = true
cell.onTapped = { [weak self] in
guard let self = self else { return }
self.showConfirmationAlert(message: "Delete this tunnel?", buttonTitle: "Delete", from: cell) { [weak self] in
guard let tunnelsManager = self?.tunnelsManager, let tunnel = self?.tunnel else { return }
tunnelsManager.remove(tunnel: tunnel) { (error) in
if error != nil {
print("Error removing tunnel: \(String(describing: error))")
return
}
}
self?.navigationController?.navigationController?.popToRootViewController(animated: true)
}
}
return cell
}
}
}
class TunnelDetailTableViewStatusCell: UITableViewCell {
static let reuseIdentifier = "TunnelDetailTableViewStatusCell"
var tunnel: TunnelContainer? {
didSet(value) {
update(from: tunnel?.status)
statusObservervationToken = tunnel?.observe(\.status) { [weak self] (tunnel, _) in
self?.update(from: tunnel.status)
}
}
}
var isSwitchInteractionEnabled: Bool {
get { return statusSwitch.isUserInteractionEnabled }
set(value) { statusSwitch.isUserInteractionEnabled = value }
}
var onSwitchToggled: ((Bool) -> Void)?
private var isOnSwitchToggledHandlerEnabled: Bool = true
let statusSwitch: UISwitch
private var statusObservervationToken: AnyObject?
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
statusSwitch = UISwitch()
super.init(style: .default, reuseIdentifier: TunnelDetailTableViewKeyValueCell.reuseIdentifier)
accessoryView = statusSwitch
statusSwitch.addTarget(self, action: #selector(switchToggled), for: .valueChanged)
}
@objc func switchToggled() {
if isOnSwitchToggledHandlerEnabled {
onSwitchToggled?(statusSwitch.isOn)
}
}
private func update(from status: TunnelStatus?) {
guard let status = status else {
reset()
return
}
let text: String
switch status {
case .inactive:
text = "Inactive"
case .activating:
text = "Activating"
case .active:
text = "Active"
case .deactivating:
text = "Deactivating"
case .reasserting:
text = "Reactivating"
case .restarting:
text = "Restarting"
}
textLabel?.text = text
DispatchQueue.main.async { [weak statusSwitch] in
guard let statusSwitch = statusSwitch else { return }
statusSwitch.isOn = !(status == .deactivating || status == .inactive)
statusSwitch.isUserInteractionEnabled = (status == .inactive || status == .active)
}
textLabel?.textColor = (status == .active || status == .inactive) ? UIColor.black : UIColor.gray
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func reset() {
textLabel?.text = "Invalid"
statusSwitch.isOn = false
textLabel?.textColor = UIColor.gray
statusSwitch.isUserInteractionEnabled = false
}
override func prepareForReuse() {
super.prepareForReuse()
reset()
}
}
class TunnelDetailTableViewKeyValueCell: CopyableLabelTableViewCell {
static let reuseIdentifier = "TunnelDetailTableViewKeyValueCell"
var key: String {
get { return keyLabel.text ?? "" }
set(value) { keyLabel.text = value }
}
var value: String {
get { return valueLabel.text }
set(value) { valueLabel.text = value }
}
override var textToCopy: String? {
return self.valueLabel.text
}
let keyLabel: UILabel
let valueLabel: ScrollableLabel
var isStackedHorizontally: Bool = false
var isStackedVertically: Bool = false
var contentSizeBasedConstraints: [NSLayoutConstraint] = []
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
keyLabel = UILabel()
keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
keyLabel.adjustsFontForContentSizeCategory = true
valueLabel = ScrollableLabel()
valueLabel.label.font = UIFont.preferredFont(forTextStyle: .body)
valueLabel.label.adjustsFontForContentSizeCategory = true
keyLabel.textColor = UIColor.black
valueLabel.textColor = UIColor.gray
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(keyLabel)
keyLabel.translatesAutoresizingMaskIntoConstraints = false
keyLabel.textAlignment = .left
NSLayoutConstraint.activate([
keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
])
contentView.addSubview(valueLabel)
valueLabel.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: valueLabel.bottomAnchor, multiplier: 0.5)
])
// Key label should never appear truncated
keyLabel.setContentCompressionResistancePriority(.defaultHigh + 1, for: .horizontal)
// Key label should hug it's content; value label should not.
keyLabel.setContentHuggingPriority(.defaultHigh, for: .horizontal)
valueLabel.setContentHuggingPriority(.defaultLow, for: .horizontal)
configureForContentSize()
}
func configureForContentSize() {
var constraints: [NSLayoutConstraint] = []
if self.traitCollection.preferredContentSizeCategory.isAccessibilityCategory {
// Stack vertically
if !isStackedVertically {
constraints = [
valueLabel.topAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor)
]
isStackedVertically = true
isStackedHorizontally = false
}
} else {
// Stack horizontally
if !isStackedHorizontally {
constraints = [
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueLabel.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
valueLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
]
isStackedHorizontally = true
isStackedVertically = false
}
}
if !constraints.isEmpty {
NSLayoutConstraint.deactivate(self.contentSizeBasedConstraints)
NSLayoutConstraint.activate(constraints)
self.contentSizeBasedConstraints = constraints
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
configureForContentSize()
}
}
class TunnelDetailTableViewButtonCell: UITableViewCell {
static let reuseIdentifier = "TunnelDetailTableViewButtonCell"
var buttonText: String {
get { return button.title(for: .normal) ?? "" }
set(value) { button.setTitle(value, for: .normal) }
}
var hasDestructiveAction: Bool {
get { return button.tintColor == UIColor.red }
set(value) { button.tintColor = value ? UIColor.red : buttonStandardTintColor }
}
var onTapped: (() -> Void)?
let button: UIButton
var buttonStandardTintColor: UIColor
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
button = UIButton(type: .system)
button.titleLabel?.font = UIFont.preferredFont(forTextStyle: .body)
button.titleLabel?.adjustsFontForContentSizeCategory = true
buttonStandardTintColor = button.tintColor
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(button)
button.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
button.topAnchor.constraint(equalTo: contentView.layoutMarginsGuide.topAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalTo: button.bottomAnchor),
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
hasDestructiveAction = false
}
}
class TunnelDetailTableViewActivateOnDemandCell: UITableViewCell {
static let reuseIdentifier = "TunnelDetailTableViewActivateOnDemandCell"
var tunnel: TunnelContainer? {
didSet(value) {
update(from: tunnel?.activateOnDemandSetting())
onDemandStatusObservervationToken = tunnel?.observe(\.isActivateOnDemandEnabled) { [weak self] (tunnel, _) in
self?.update(from: tunnel.activateOnDemandSetting())
}
}
}
var onDemandStatusObservervationToken: AnyObject?
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: .value1, reuseIdentifier: reuseIdentifier)
textLabel?.text = "Activate on demand"
textLabel?.font = UIFont.preferredFont(forTextStyle: .body)
textLabel?.adjustsFontForContentSizeCategory = true
detailTextLabel?.font = UIFont.preferredFont(forTextStyle: .body)
detailTextLabel?.adjustsFontForContentSizeCategory = true
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func update(from activateOnDemandSetting: ActivateOnDemandSetting?) {
detailTextLabel?.text = TunnelViewModel.activateOnDemandDetailText(for: activateOnDemandSetting)
}
override func prepareForReuse() {
super.prepareForReuse()
textLabel?.text = "Activate on demand"
detailTextLabel?.text = ""
}
}
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