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// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All rights reserved.
import UIKit
// MARK: TunnelDetailTableViewController
class TunnelDetailTableViewController: UITableViewController {
let interfaceFieldsBySection: [[TunnelViewModel.InterfaceField]] = [
[.name],
[.publicKey, .copyPublicKey],
[.addresses, .listenPort, .mtu, .dns]
]
let peerFieldsBySection: [[TunnelViewModel.PeerField]] = [
[.publicKey, .preSharedKey, .endpoint,
.allowedIPs, .persistentKeepAlive]
]
let tunnelsManager: TunnelsManager
let tunnel: TunnelContainer
var tunnelViewModel: TunnelViewModel
init(tunnelsManager tm: TunnelsManager, tunnel t: TunnelContainer) {
tunnelsManager = tm
tunnel = t
tunnelViewModel = TunnelViewModel(tunnelConfiguration: t.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.rowHeight = 44
self.tableView.allowsSelection = false
self.tableView.register(TunnelDetailTableViewStatusCell.self, forCellReuseIdentifier: TunnelDetailTableViewStatusCell.id)
self.tableView.register(TunnelDetailTableViewKeyValueCell.self, forCellReuseIdentifier: TunnelDetailTableViewKeyValueCell.id)
self.tableView.register(TunnelDetailTableViewButtonCell.self, forCellReuseIdentifier: TunnelDetailTableViewButtonCell.id)
}
@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 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: TunnelEditTableViewControllerDelegate
extension TunnelDetailTableViewController: TunnelEditTableViewControllerDelegate {
func tunnelSaved(tunnel: TunnelContainer) {
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
self.tableView.reloadData()
}
func tunnelEditingCancelled() {
// Nothing to do
}
}
// MARK: UITableViewDataSource
extension TunnelDetailTableViewController {
override func numberOfSections(in tableView: UITableView) -> Int {
let interfaceData = tunnelViewModel.interfaceData
let numberOfInterfaceSections = (0 ..< interfaceFieldsBySection.count).filter { section in
(!interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFieldsBySection[section]).isEmpty)
}.count
let numberOfPeerSections = peerFieldsBySection.count
let numberOfPeers = tunnelViewModel.peersData.count
return 1 + numberOfInterfaceSections + (numberOfPeers * numberOfPeerSections) + 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let interfaceData = tunnelViewModel.interfaceData
let numberOfInterfaceSections = (0 ..< interfaceFieldsBySection.count).filter { section in
(!interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFieldsBySection[section]).isEmpty)
}.count
let numberOfPeerSections = peerFieldsBySection.count
let numberOfPeers = tunnelViewModel.peersData.count
if (section == 0) {
// Status
return 1
} else if (section < (1 + numberOfInterfaceSections)) {
// Interface
return interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFieldsBySection[section - 1]).count
} else if ((numberOfPeers > 0) && (section < (1 + numberOfInterfaceSections + numberOfPeers * numberOfPeerSections))) {
// Peer
let peerIndex = Int((section - 1 - numberOfInterfaceSections) / numberOfPeerSections)
let peerData = tunnelViewModel.peersData[peerIndex]
let peerSectionIndex = (section - 1 - numberOfInterfaceSections) % numberOfPeerSections
return peerData.filterFieldsWithValueOrControl(peerFields: peerFieldsBySection[peerSectionIndex]).count
} else {
// Delete tunnel
return 1
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
let interfaceData = tunnelViewModel.interfaceData
let numberOfInterfaceSections = (0 ..< interfaceFieldsBySection.count).filter { section in
(!interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFieldsBySection[section]).isEmpty)
}.count
let numberOfPeerSections = peerFieldsBySection.count
let numberOfPeers = tunnelViewModel.peersData.count
if (section == 0) {
// Status
return "Status"
} else if (section < 1 + numberOfInterfaceSections) {
// Interface
return (section == 1) ? "Interface" : nil
} else if ((numberOfPeers > 0) && (section < (1 + numberOfInterfaceSections + numberOfPeers * numberOfPeerSections))) {
// Peer
let peerSectionIndex = (section - 1 - numberOfInterfaceSections) % numberOfPeerSections
return (peerSectionIndex == 0) ? "Peer" : nil
} else {
// Add peer
return nil
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let interfaceData = tunnelViewModel.interfaceData
let numberOfInterfaceSections = (0 ..< interfaceFieldsBySection.count).filter { section in
(!interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFieldsBySection[section]).isEmpty)
}.count
let numberOfPeerSections = peerFieldsBySection.count
let numberOfPeers = tunnelViewModel.peersData.count
let section = indexPath.section
let row = indexPath.row
if (section == 0) {
// Status
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewStatusCell.id, for: indexPath) as! TunnelDetailTableViewStatusCell
cell.tunnel = self.tunnel
cell.onSwitchToggled = { [weak self] isOn in
cell.isSwitchInteractionEnabled = false
guard let s = self else { return }
if (isOn) {
s.tunnelsManager.startActivation(of: s.tunnel) { error in
print("Error while activating: \(String(describing: error))")
}
} else {
s.tunnelsManager.startDeactivation(of: s.tunnel) { error in
print("Error while deactivating: \(String(describing: error))")
}
}
}
return cell
} else if (section < 1 + numberOfInterfaceSections) {
// Interface
let field = interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFieldsBySection[section - 1])[row]
if (field == .copyPublicKey) {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewButtonCell.id, for: indexPath) as! TunnelDetailTableViewButtonCell
cell.buttonText = field.rawValue
cell.onTapped = {
print("Copying public key is unimplemented") // TODO
}
return cell
} else {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewKeyValueCell.id, for: indexPath) as! TunnelDetailTableViewKeyValueCell
// Set key and value
cell.key = field.rawValue
cell.value = interfaceData[field]
if (field != .publicKey) {
cell.detailTextLabel?.allowsDefaultTighteningForTruncation = true
cell.detailTextLabel?.adjustsFontSizeToFitWidth = true
cell.detailTextLabel?.minimumScaleFactor = 0.85
}
return cell
}
} else if ((numberOfPeers > 0) && (section < (1 + numberOfInterfaceSections + numberOfPeers * numberOfPeerSections))) {
// Peer
let peerIndex = Int((section - 1 - numberOfInterfaceSections) / numberOfPeerSections)
let peerSectionIndex = (section - 1 - numberOfInterfaceSections) % numberOfPeerSections
let peerData = tunnelViewModel.peersData[peerIndex]
let field = peerData.filterFieldsWithValueOrControl(peerFields: peerFieldsBySection[peerSectionIndex])[row]
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewKeyValueCell.id, for: indexPath) as! TunnelDetailTableViewKeyValueCell
// Set key and value
cell.key = field.rawValue
cell.value = peerData[field]
if (field != .publicKey && field != .preSharedKey) {
cell.detailTextLabel?.allowsDefaultTighteningForTruncation = true
cell.detailTextLabel?.adjustsFontSizeToFitWidth = true
cell.detailTextLabel?.minimumScaleFactor = 0.85
}
return cell
} else {
assert(section == (1 + numberOfInterfaceSections + numberOfPeers * numberOfPeerSections))
// Delete configuration
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelDetailTableViewButtonCell.id, for: indexPath) as! TunnelDetailTableViewButtonCell
cell.buttonText = "Delete tunnel"
cell.onTapped = {
print("Delete peer unimplemented")
}
return cell
}
}
}
class TunnelDetailTableViewStatusCell: UITableViewCell {
static let id: String = "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)? = nil
private var isOnSwitchToggledHandlerEnabled: Bool = true
let statusSwitch: UISwitch
private var statusObservervationToken: AnyObject? = nil
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
statusSwitch = UISwitch()
super.init(style: .default, reuseIdentifier: TunnelDetailTableViewKeyValueCell.id)
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 .resolvingEndpointDomains:
text = "Resolving domains"
}
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 || status == .resolvingEndpointDomains)
}
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() {
reset()
}
}
class TunnelDetailTableViewKeyValueCell: UITableViewCell {
static let id: String = "TunnelDetailTableViewKeyValueCell"
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: TunnelDetailTableViewKeyValueCell.id)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
}
}
class TunnelDetailTableViewButtonCell: UITableViewCell {
static let id: String = "TunnelsEditTableViewButtonCell"
var buttonText: String {
get { return button.title(for: .normal) ?? "" }
set(value) { button.setTitle(value, for: .normal) }
}
var onTapped: (() -> Void)? = nil
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() {
buttonText = ""
onTapped = nil
}
}
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