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