wireguard-apple/Sources/WireGuardApp/UI/iOS/ViewController/TunnelDetailTableViewContro...

458 lines
20 KiB
Swift

// SPDX-License-Identifier: MIT
// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
import UIKit
class TunnelDetailTableViewController: UITableViewController {
private enum Section {
case status
case interface
case peer(index: Int, peer: TunnelViewModel.PeerData)
case onDemand
case delete
}
static let interfaceFields: [TunnelViewModel.InterfaceField] = [
.name, .publicKey, .addresses,
.listenPort, .mtu, .dns
]
static let peerFields: [TunnelViewModel.PeerField] = [
.publicKey, .preSharedKey, .endpoint,
.allowedIPs, .persistentKeepAlive,
.rxBytes, .txBytes, .lastHandshakeTime
]
static let onDemandFields: [ActivateOnDemandViewModel.OnDemandField] = [
.onDemand, .ssid
]
let tunnelsManager: TunnelsManager
let tunnel: TunnelContainer
var tunnelViewModel: TunnelViewModel
var onDemandViewModel: ActivateOnDemandViewModel
private var sections = [Section]()
private var interfaceFieldIsVisible = [Bool]()
private var peerFieldIsVisible = [[Bool]]()
private var statusObservationToken: AnyObject?
private var onDemandObservationToken: AnyObject?
private var reloadRuntimeConfigurationTimer: Timer?
init(tunnelsManager: TunnelsManager, tunnel: TunnelContainer) {
self.tunnelsManager = tunnelsManager
self.tunnel = tunnel
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration)
onDemandViewModel = ActivateOnDemandViewModel(tunnel: tunnel)
super.init(style: .grouped)
loadSections()
loadVisibleFields()
statusObservationToken = tunnel.observe(\.status) { [weak self] _, _ in
guard let self = self else { return }
if tunnel.status == .active {
self.startUpdatingRuntimeConfiguration()
} else if tunnel.status == .inactive {
self.reloadRuntimeConfiguration()
self.stopUpdatingRuntimeConfiguration()
}
}
onDemandObservationToken = tunnel.observe(\.isActivateOnDemandEnabled) { [weak self] tunnel, _ in
// Handle On-Demand getting turned on/off outside of the app
self?.onDemandViewModel = ActivateOnDemandViewModel(tunnel: tunnel)
self?.updateActivateOnDemandFields()
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
title = tunnelViewModel.interfaceData[.name]
navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(editTapped))
tableView.estimatedRowHeight = 44
tableView.rowHeight = UITableView.automaticDimension
tableView.register(SwitchCell.self)
tableView.register(KeyValueCell.self)
tableView.register(ButtonCell.self)
tableView.register(ChevronCell.self)
restorationIdentifier = "TunnelDetailVC:\(tunnel.name)"
}
private func loadSections() {
sections.removeAll()
sections.append(.status)
sections.append(.interface)
for (index, peer) in tunnelViewModel.peersData.enumerated() {
sections.append(.peer(index: index, peer: peer))
}
sections.append(.onDemand)
sections.append(.delete)
}
private func loadVisibleFields() {
let visibleInterfaceFields = tunnelViewModel.interfaceData.filterFieldsWithValueOrControl(interfaceFields: TunnelDetailTableViewController.interfaceFields)
interfaceFieldIsVisible = TunnelDetailTableViewController.interfaceFields.map { visibleInterfaceFields.contains($0) }
peerFieldIsVisible = tunnelViewModel.peersData.map { peer in
let visiblePeerFields = peer.filterFieldsWithValueOrControl(peerFields: TunnelDetailTableViewController.peerFields)
return TunnelDetailTableViewController.peerFields.map { visiblePeerFields.contains($0) }
}
}
override func viewWillAppear(_ animated: Bool) {
if tunnel.status == .active {
self.startUpdatingRuntimeConfiguration()
}
}
override func viewDidDisappear(_ animated: Bool) {
stopUpdatingRuntimeConfiguration()
}
@objc func editTapped() {
PrivateDataConfirmation.confirmAccess(to: tr("iosViewPrivateData")) { [weak self] in
guard let self = self else { return }
let editVC = TunnelEditTableViewController(tunnelsManager: self.tunnelsManager, tunnel: self.tunnel)
editVC.delegate = self
let editNC = UINavigationController(rootViewController: editVC)
editNC.modalPresentationStyle = .fullScreen
self.present(editNC, animated: true)
}
}
func startUpdatingRuntimeConfiguration() {
reloadRuntimeConfiguration()
reloadRuntimeConfigurationTimer?.invalidate()
let reloadTimer = Timer(timeInterval: 1 /* second */, repeats: true) { [weak self] _ in
self?.reloadRuntimeConfiguration()
}
reloadRuntimeConfigurationTimer = reloadTimer
RunLoop.main.add(reloadTimer, forMode: .common)
}
func stopUpdatingRuntimeConfiguration() {
reloadRuntimeConfigurationTimer?.invalidate()
reloadRuntimeConfigurationTimer = nil
}
func applyTunnelConfiguration(tunnelConfiguration: TunnelConfiguration) {
// Incorporates changes from tunnelConfiguation. Ignores any changes in peer ordering.
guard let tableView = self.tableView else { return }
let sections = self.sections
let interfaceSectionIndex = sections.firstIndex {
if case .interface = $0 {
return true
} else {
return false
}
}!
let firstPeerSectionIndex = interfaceSectionIndex + 1
let interfaceFieldIsVisible = self.interfaceFieldIsVisible
let peerFieldIsVisible = self.peerFieldIsVisible
func handleSectionFieldsModified<T>(fields: [T], fieldIsVisible: [Bool], section: Int, changes: [T: TunnelViewModel.Changes.FieldChange]) {
for (index, field) in fields.enumerated() {
guard let change = changes[field] else { continue }
if case .modified(let newValue) = change {
let row = fieldIsVisible[0 ..< index].filter { $0 }.count
let indexPath = IndexPath(row: row, section: section)
if let cell = tableView.cellForRow(at: indexPath) as? KeyValueCell {
cell.value = newValue
}
}
}
}
func handleSectionRowsInsertedOrRemoved<T>(fields: [T], fieldIsVisible fieldIsVisibleInput: [Bool], section: Int, changes: [T: TunnelViewModel.Changes.FieldChange]) {
var fieldIsVisible = fieldIsVisibleInput
var removedIndexPaths = [IndexPath]()
for (index, field) in fields.enumerated().reversed() where changes[field] == .removed {
let row = fieldIsVisible[0 ..< index].filter { $0 }.count
removedIndexPaths.append(IndexPath(row: row, section: section))
fieldIsVisible[index] = false
}
if !removedIndexPaths.isEmpty {
tableView.deleteRows(at: removedIndexPaths, with: .automatic)
}
var addedIndexPaths = [IndexPath]()
for (index, field) in fields.enumerated() where changes[field] == .added {
let row = fieldIsVisible[0 ..< index].filter { $0 }.count
addedIndexPaths.append(IndexPath(row: row, section: section))
fieldIsVisible[index] = true
}
if !addedIndexPaths.isEmpty {
tableView.insertRows(at: addedIndexPaths, with: .automatic)
}
}
let changes = self.tunnelViewModel.applyConfiguration(other: tunnelConfiguration)
if !changes.interfaceChanges.isEmpty {
handleSectionFieldsModified(fields: TunnelDetailTableViewController.interfaceFields, fieldIsVisible: interfaceFieldIsVisible,
section: interfaceSectionIndex, changes: changes.interfaceChanges)
}
for (peerIndex, peerChanges) in changes.peerChanges {
handleSectionFieldsModified(fields: TunnelDetailTableViewController.peerFields, fieldIsVisible: peerFieldIsVisible[peerIndex], section: firstPeerSectionIndex + peerIndex, changes: peerChanges)
}
let isAnyInterfaceFieldAddedOrRemoved = changes.interfaceChanges.contains { $0.value == .added || $0.value == .removed }
let isAnyPeerFieldAddedOrRemoved = changes.peerChanges.contains { $0.changes.contains { $0.value == .added || $0.value == .removed } }
let peersRemovedSectionIndices = changes.peersRemovedIndices.map { firstPeerSectionIndex + $0 }
let peersInsertedSectionIndices = changes.peersInsertedIndices.map { firstPeerSectionIndex + $0 }
if isAnyInterfaceFieldAddedOrRemoved || isAnyPeerFieldAddedOrRemoved || !peersRemovedSectionIndices.isEmpty || !peersInsertedSectionIndices.isEmpty {
tableView.beginUpdates()
if isAnyInterfaceFieldAddedOrRemoved {
handleSectionRowsInsertedOrRemoved(fields: TunnelDetailTableViewController.interfaceFields, fieldIsVisible: interfaceFieldIsVisible, section: interfaceSectionIndex, changes: changes.interfaceChanges)
}
if isAnyPeerFieldAddedOrRemoved {
for (peerIndex, peerChanges) in changes.peerChanges {
handleSectionRowsInsertedOrRemoved(fields: TunnelDetailTableViewController.peerFields, fieldIsVisible: peerFieldIsVisible[peerIndex], section: firstPeerSectionIndex + peerIndex, changes: peerChanges)
}
}
if !peersRemovedSectionIndices.isEmpty {
tableView.deleteSections(IndexSet(peersRemovedSectionIndices), with: .automatic)
}
if !peersInsertedSectionIndices.isEmpty {
tableView.insertSections(IndexSet(peersInsertedSectionIndices), with: .automatic)
}
self.loadSections()
self.loadVisibleFields()
tableView.endUpdates()
} else {
self.loadSections()
self.loadVisibleFields()
}
}
private func reloadRuntimeConfiguration() {
tunnel.getRuntimeTunnelConfiguration { [weak self] tunnelConfiguration in
guard let tunnelConfiguration = tunnelConfiguration else { return }
guard let self = self else { return }
self.applyTunnelConfiguration(tunnelConfiguration: tunnelConfiguration)
}
}
private func updateActivateOnDemandFields() {
guard let onDemandSection = sections.firstIndex(where: { if case .onDemand = $0 { return true } else { return false } }) else { return }
let numberOfTableViewOnDemandRows = tableView.numberOfRows(inSection: onDemandSection)
let ssidRowIndexPath = IndexPath(row: 1, section: onDemandSection)
switch (numberOfTableViewOnDemandRows, onDemandViewModel.isWiFiInterfaceEnabled) {
case (1, true):
tableView.insertRows(at: [ssidRowIndexPath], with: .automatic)
case (2, false):
tableView.deleteRows(at: [ssidRowIndexPath], with: .automatic)
default:
break
}
tableView.reloadSections(IndexSet(integer: onDemandSection), with: .automatic)
}
}
extension TunnelDetailTableViewController: TunnelEditTableViewControllerDelegate {
func tunnelSaved(tunnel: TunnelContainer) {
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration)
onDemandViewModel = ActivateOnDemandViewModel(tunnel: tunnel)
loadSections()
loadVisibleFields()
title = tunnel.name
restorationIdentifier = "TunnelDetailVC:\(tunnel.name)"
tableView.reloadData()
}
func tunnelEditingCancelled() {
// Nothing to do
}
}
extension TunnelDetailTableViewController {
override func numberOfSections(in tableView: UITableView) -> Int {
return sections.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
switch sections[section] {
case .status:
return 1
case .interface:
return interfaceFieldIsVisible.filter { $0 }.count
case .peer(let peerIndex, _):
return peerFieldIsVisible[peerIndex].filter { $0 }.count
case .onDemand:
return onDemandViewModel.isWiFiInterfaceEnabled ? 2 : 1
case .delete:
return 1
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
switch sections[section] {
case .status:
return tr("tunnelSectionTitleStatus")
case .interface:
return tr("tunnelSectionTitleInterface")
case .peer:
return tr("tunnelSectionTitlePeer")
case .onDemand:
return tr("tunnelSectionTitleOnDemand")
case .delete:
return nil
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
switch sections[indexPath.section] {
case .status:
return statusCell(for: tableView, at: indexPath)
case .interface:
return interfaceCell(for: tableView, at: indexPath)
case .peer(let index, let peer):
return peerCell(for: tableView, at: indexPath, with: peer, peerIndex: index)
case .onDemand:
return onDemandCell(for: tableView, at: indexPath)
case .delete:
return deleteConfigurationCell(for: tableView, at: indexPath)
}
}
private func statusCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let cell: SwitchCell = tableView.dequeueReusableCell(for: indexPath)
let statusUpdate: (SwitchCell, TunnelStatus) -> Void = { cell, status in
let text: String
switch status {
case .inactive:
text = tr("tunnelStatusInactive")
case .activating:
text = tr("tunnelStatusActivating")
case .active:
text = tr("tunnelStatusActive")
case .deactivating:
text = tr("tunnelStatusDeactivating")
case .reasserting:
text = tr("tunnelStatusReasserting")
case .restarting:
text = tr("tunnelStatusRestarting")
case .waiting:
text = tr("tunnelStatusWaiting")
}
cell.textLabel?.text = text
DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(200)) { [weak cell] in
cell?.switchView.isOn = !(status == .deactivating || status == .inactive)
cell?.switchView.isUserInteractionEnabled = (status == .inactive || status == .active)
}
cell.isEnabled = status == .active || status == .inactive
}
statusUpdate(cell, tunnel.status)
cell.observationToken = tunnel.observe(\.status) { [weak cell] tunnel, _ in
guard let cell = cell else { return }
statusUpdate(cell, tunnel.status)
}
cell.onSwitchToggled = { [weak self] isOn in
guard let self = self else { return }
if isOn {
self.tunnelsManager.startActivation(of: self.tunnel)
} else {
self.tunnelsManager.startDeactivation(of: self.tunnel)
}
}
return cell
}
private func interfaceCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let visibleInterfaceFields = TunnelDetailTableViewController.interfaceFields.enumerated().filter { interfaceFieldIsVisible[$0.offset] }.map { $0.element }
let field = visibleInterfaceFields[indexPath.row]
let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.localizedUIString
cell.value = tunnelViewModel.interfaceData[field]
return cell
}
private func peerCell(for tableView: UITableView, at indexPath: IndexPath, with peerData: TunnelViewModel.PeerData, peerIndex: Int) -> UITableViewCell {
let visiblePeerFields = TunnelDetailTableViewController.peerFields.enumerated().filter { peerFieldIsVisible[peerIndex][$0.offset] }.map { $0.element }
let field = visiblePeerFields[indexPath.row]
let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.localizedUIString
if field == .persistentKeepAlive {
cell.value = tr(format: "tunnelPeerPersistentKeepaliveValue (%@)", peerData[field])
} else if field == .preSharedKey {
cell.value = tr("tunnelPeerPresharedKeyEnabled")
} else {
cell.value = peerData[field]
}
return cell
}
private func onDemandCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let field = TunnelDetailTableViewController.onDemandFields[indexPath.row]
if field == .onDemand {
let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.localizedUIString
cell.value = onDemandViewModel.localizedInterfaceDescription
return cell
} else {
assert(field == .ssid)
if onDemandViewModel.ssidOption == .anySSID {
let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.localizedUIString
cell.value = onDemandViewModel.ssidOption.localizedUIString
return cell
} else {
let cell: ChevronCell = tableView.dequeueReusableCell(for: indexPath)
cell.message = field.localizedUIString
cell.detailMessage = onDemandViewModel.localizedSSIDDescription
return cell
}
}
}
private func deleteConfigurationCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
cell.buttonText = tr("deleteTunnelButtonTitle")
cell.hasDestructiveAction = true
cell.onTapped = { [weak self] in
guard let self = self else { return }
ConfirmationAlertPresenter.showConfirmationAlert(message: tr("deleteTunnelConfirmationAlertMessage"),
buttonTitle: tr("deleteTunnelConfirmationAlertButtonTitle"),
from: cell, presentingVC: self) { [weak self] in
guard let self = self else { return }
self.tunnelsManager.remove(tunnel: self.tunnel) { error in
if error != nil {
print("Error removing tunnel: \(String(describing: error))")
return
}
}
}
}
return cell
}
}
extension TunnelDetailTableViewController {
override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
if case .onDemand = sections[indexPath.section],
case .ssid = TunnelDetailTableViewController.onDemandFields[indexPath.row] {
return indexPath
}
return nil
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if case .onDemand = sections[indexPath.section],
case .ssid = TunnelDetailTableViewController.onDemandFields[indexPath.row] {
let ssidDetailVC = SSIDOptionDetailTableViewController(title: onDemandViewModel.ssidOption.localizedUIString, ssids: onDemandViewModel.selectedSSIDs)
navigationController?.pushViewController(ssidDetailVC, animated: true)
}
tableView.deselectRow(at: indexPath, animated: true)
}
}