504 lines
23 KiB
Swift
504 lines
23 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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protocol TunnelEditTableViewControllerDelegate: class {
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func tunnelSaved(tunnel: TunnelContainer)
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func tunnelEditingCancelled()
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}
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class TunnelEditTableViewController: UITableViewController {
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private enum Section {
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case interface
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case peer(_ peer: TunnelViewModel.PeerData)
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case addPeer
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case onDemand
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static func == (lhs: Section, rhs: Section) -> Bool {
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switch (lhs, rhs) {
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case (.interface, .interface),
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(.addPeer, .addPeer),
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(.onDemand, .onDemand):
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return true
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case let (.peer(peerA), .peer(peerB)):
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return peerA.index == peerB.index
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default:
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return false
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}
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}
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}
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weak var delegate: TunnelEditTableViewControllerDelegate?
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let interfaceFieldsBySection: [[TunnelViewModel.InterfaceField]] = [
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[.name],
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[.privateKey, .publicKey, .generateKeyPair],
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[.addresses, .listenPort, .mtu, .dns]
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]
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let peerFields: [TunnelViewModel.PeerField] = [
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.publicKey, .preSharedKey, .endpoint,
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.allowedIPs, .excludePrivateIPs, .persistentKeepAlive,
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.deletePeer
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]
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let onDemandFields: [ActivateOnDemandViewModel.OnDemandField] = [
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.nonWiFiInterface,
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.wiFiInterface,
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.ssid
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]
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let tunnelsManager: TunnelsManager
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let tunnel: TunnelContainer?
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let tunnelViewModel: TunnelViewModel
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var onDemandViewModel: ActivateOnDemandViewModel
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private var sections = [Section]()
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// Use this initializer to edit an existing tunnel.
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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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}
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// Use this initializer to create a new tunnel.
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init(tunnelsManager: TunnelsManager) {
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self.tunnelsManager = tunnelsManager
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tunnel = nil
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tunnelViewModel = TunnelViewModel(tunnelConfiguration: nil)
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onDemandViewModel = ActivateOnDemandViewModel()
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super.init(style: .grouped)
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loadSections()
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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 = tunnel == nil ? tr("newTunnelViewTitle") : tr("editTunnelViewTitle")
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navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .save, target: self, action: #selector(saveTapped))
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navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelTapped))
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tableView.estimatedRowHeight = 44
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tableView.rowHeight = UITableView.automaticDimension
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tableView.register(TunnelEditKeyValueCell.self)
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tableView.register(TunnelEditEditableKeyValueCell.self)
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tableView.register(ButtonCell.self)
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tableView.register(SwitchCell.self)
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tableView.register(ChevronCell.self)
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}
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private func loadSections() {
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sections.removeAll()
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interfaceFieldsBySection.forEach { _ in sections.append(.interface) }
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tunnelViewModel.peersData.forEach { sections.append(.peer($0)) }
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sections.append(.addPeer)
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sections.append(.onDemand)
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}
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@objc func saveTapped() {
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tableView.endEditing(false)
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let tunnelSaveResult = tunnelViewModel.save()
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switch tunnelSaveResult {
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case .error(let errorMessage):
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let alertTitle = (tunnelViewModel.interfaceData.validatedConfiguration == nil || tunnelViewModel.interfaceData.validatedName == nil) ?
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tr("alertInvalidInterfaceTitle") : tr("alertInvalidPeerTitle")
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ErrorPresenter.showErrorAlert(title: alertTitle, message: errorMessage, from: self)
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tableView.reloadData() // Highlight erroring fields
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case .saved(let tunnelConfiguration):
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let onDemandOption = onDemandViewModel.toOnDemandOption()
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if let tunnel = tunnel {
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// We're modifying an existing tunnel
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tunnelsManager.modify(tunnel: tunnel, tunnelConfiguration: tunnelConfiguration, onDemandOption: onDemandOption) { [weak self] error in
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if let error = error {
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ErrorPresenter.showErrorAlert(error: error, from: self)
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} else {
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self?.dismiss(animated: true, completion: nil)
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self?.delegate?.tunnelSaved(tunnel: tunnel)
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}
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}
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} else {
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// We're adding a new tunnel
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tunnelsManager.add(tunnelConfiguration: tunnelConfiguration, onDemandOption: onDemandOption) { [weak self] result in
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switch result {
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case .failure(let error):
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ErrorPresenter.showErrorAlert(error: error, from: self)
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case .success(let tunnel):
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self?.dismiss(animated: true, completion: nil)
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self?.delegate?.tunnelSaved(tunnel: tunnel)
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}
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}
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}
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}
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}
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@objc func cancelTapped() {
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dismiss(animated: true, completion: nil)
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delegate?.tunnelEditingCancelled()
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}
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}
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// MARK: UITableViewDataSource
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extension TunnelEditTableViewController {
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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 .interface:
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return interfaceFieldsBySection[section].count
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case .peer(let peerData):
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let peerFieldsToShow = peerData.shouldAllowExcludePrivateIPsControl ? peerFields : peerFields.filter { $0 != .excludePrivateIPs }
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return peerFieldsToShow.count
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case .addPeer:
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return 1
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case .onDemand:
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if onDemandViewModel.isWiFiInterfaceEnabled {
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return 3
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} else {
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return 2
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}
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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 .interface:
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return section == 0 ? tr("tunnelSectionTitleInterface") : nil
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case .peer:
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return tr("tunnelSectionTitlePeer")
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case .addPeer:
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return nil
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case .onDemand:
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return tr("tunnelSectionTitleOnDemand")
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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 .interface:
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return interfaceFieldCell(for: tableView, at: indexPath)
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case .peer(let peerData):
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return peerCell(for: tableView, at: indexPath, with: peerData)
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case .addPeer:
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return addPeerCell(for: tableView, at: indexPath)
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case .onDemand:
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return onDemandCell(for: tableView, at: indexPath)
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}
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}
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private func interfaceFieldCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
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let field = interfaceFieldsBySection[indexPath.section][indexPath.row]
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switch field {
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case .generateKeyPair:
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return generateKeyPairCell(for: tableView, at: indexPath, with: field)
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case .publicKey:
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return publicKeyCell(for: tableView, at: indexPath, with: field)
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default:
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return interfaceFieldKeyValueCell(for: tableView, at: indexPath, with: field)
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}
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}
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private func generateKeyPairCell(for tableView: UITableView, at indexPath: IndexPath, with field: TunnelViewModel.InterfaceField) -> UITableViewCell {
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let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
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cell.buttonText = field.localizedUIString
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cell.onTapped = { [weak self] in
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guard let self = self else { return }
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self.tunnelViewModel.interfaceData[.privateKey] = PrivateKey().base64Key
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if let privateKeyRow = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .privateKey),
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let publicKeyRow = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .publicKey) {
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let privateKeyIndex = IndexPath(row: privateKeyRow, section: indexPath.section)
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let publicKeyIndex = IndexPath(row: publicKeyRow, section: indexPath.section)
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self.tableView.reloadRows(at: [privateKeyIndex, publicKeyIndex], with: .fade)
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}
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}
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return cell
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}
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private func publicKeyCell(for tableView: UITableView, at indexPath: IndexPath, with field: TunnelViewModel.InterfaceField) -> UITableViewCell {
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let cell: TunnelEditKeyValueCell = 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 interfaceFieldKeyValueCell(for tableView: UITableView, at indexPath: IndexPath, with field: TunnelViewModel.InterfaceField) -> UITableViewCell {
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let cell: TunnelEditEditableKeyValueCell = tableView.dequeueReusableCell(for: indexPath)
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cell.key = field.localizedUIString
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switch field {
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case .name, .privateKey:
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cell.placeholderText = tr("tunnelEditPlaceholderTextRequired")
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cell.keyboardType = .default
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case .addresses:
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cell.placeholderText = tr("tunnelEditPlaceholderTextStronglyRecommended")
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cell.keyboardType = .numbersAndPunctuation
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case .dns:
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cell.placeholderText = tunnelViewModel.peersData.contains(where: { $0.shouldStronglyRecommendDNS }) ? tr("tunnelEditPlaceholderTextStronglyRecommended") : tr("tunnelEditPlaceholderTextOptional")
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cell.keyboardType = .numbersAndPunctuation
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case .listenPort, .mtu:
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cell.placeholderText = tr("tunnelEditPlaceholderTextAutomatic")
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cell.keyboardType = .numberPad
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case .publicKey, .generateKeyPair:
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cell.keyboardType = .default
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case .status, .toggleStatus:
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fatalError("Unexpected interface field")
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}
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cell.isValueValid = (!tunnelViewModel.interfaceData.fieldsWithError.contains(field))
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// Bind values to view model
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cell.value = tunnelViewModel.interfaceData[field]
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if field == .dns { // While editing DNS, you might directly set exclude private IPs
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cell.onValueBeingEdited = { [weak self] value in
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self?.tunnelViewModel.interfaceData[field] = value
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}
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cell.onValueChanged = { [weak self] oldValue, newValue in
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guard let self = self else { return }
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let isAllowedIPsChanged = self.tunnelViewModel.updateDNSServersInAllowedIPsIfRequired(oldDNSServers: oldValue, newDNSServers: newValue)
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if isAllowedIPsChanged {
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let section = self.sections.firstIndex { if case .peer(_) = $0 { return true } else { return false } }
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if let section = section, let row = self.peerFields.firstIndex(of: .allowedIPs) {
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self.tableView.reloadRows(at: [IndexPath(row: row, section: section)], with: .none)
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}
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}
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}
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} else {
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cell.onValueChanged = { [weak self] _, value in
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self?.tunnelViewModel.interfaceData[field] = value
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}
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}
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// Compute public key live
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if field == .privateKey {
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cell.onValueBeingEdited = { [weak self] value in
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guard let self = self else { return }
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self.tunnelViewModel.interfaceData[.privateKey] = value
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if let row = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .publicKey) {
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self.tableView.reloadRows(at: [IndexPath(row: row, section: indexPath.section)], with: .none)
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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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private func peerCell(for tableView: UITableView, at indexPath: IndexPath, with peerData: TunnelViewModel.PeerData) -> UITableViewCell {
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let peerFieldsToShow = peerData.shouldAllowExcludePrivateIPsControl ? peerFields : peerFields.filter { $0 != .excludePrivateIPs }
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let field = peerFieldsToShow[indexPath.row]
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switch field {
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case .deletePeer:
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return deletePeerCell(for: tableView, at: indexPath, peerData: peerData, field: field)
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case .excludePrivateIPs:
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return excludePrivateIPsCell(for: tableView, at: indexPath, peerData: peerData, field: field)
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default:
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return peerFieldKeyValueCell(for: tableView, at: indexPath, peerData: peerData, field: field)
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}
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}
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private func deletePeerCell(for tableView: UITableView, at indexPath: IndexPath, peerData: TunnelViewModel.PeerData, field: TunnelViewModel.PeerField) -> UITableViewCell {
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let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
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cell.buttonText = field.localizedUIString
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cell.hasDestructiveAction = true
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cell.onTapped = { [weak self, weak peerData] in
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guard let self = self, let peerData = peerData else { return }
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ConfirmationAlertPresenter.showConfirmationAlert(message: tr("deletePeerConfirmationAlertMessage"),
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buttonTitle: tr("deletePeerConfirmationAlertButtonTitle"),
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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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let removedSectionIndices = self.deletePeer(peer: peerData)
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let shouldShowExcludePrivateIPs = (self.tunnelViewModel.peersData.count == 1 && self.tunnelViewModel.peersData[0].shouldAllowExcludePrivateIPsControl)
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//swiftlint:disable:next trailing_closure
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tableView.performBatchUpdates({
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self.tableView.deleteSections(removedSectionIndices, with: .fade)
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if shouldShowExcludePrivateIPs {
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if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
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let rowIndexPath = IndexPath(row: row, section: self.interfaceFieldsBySection.count /* First peer section */)
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self.tableView.insertRows(at: [rowIndexPath], with: .fade)
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}
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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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private func excludePrivateIPsCell(for tableView: UITableView, at indexPath: IndexPath, peerData: TunnelViewModel.PeerData, field: TunnelViewModel.PeerField) -> UITableViewCell {
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let cell: SwitchCell = tableView.dequeueReusableCell(for: indexPath)
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cell.message = field.localizedUIString
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cell.isEnabled = peerData.shouldAllowExcludePrivateIPsControl
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cell.isOn = peerData.excludePrivateIPsValue
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cell.onSwitchToggled = { [weak self] isOn in
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guard let self = self else { return }
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peerData.excludePrivateIPsValueChanged(isOn: isOn, dnsServers: self.tunnelViewModel.interfaceData[.dns])
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if let row = self.peerFields.firstIndex(of: .allowedIPs) {
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self.tableView.reloadRows(at: [IndexPath(row: row, section: indexPath.section)], with: .none)
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}
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}
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return cell
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}
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private func peerFieldKeyValueCell(for tableView: UITableView, at indexPath: IndexPath, peerData: TunnelViewModel.PeerData, field: TunnelViewModel.PeerField) -> UITableViewCell {
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let cell: TunnelEditEditableKeyValueCell = tableView.dequeueReusableCell(for: indexPath)
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cell.key = field.localizedUIString
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switch field {
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case .publicKey:
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cell.placeholderText = tr("tunnelEditPlaceholderTextRequired")
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cell.keyboardType = .default
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case .preSharedKey, .endpoint:
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cell.placeholderText = tr("tunnelEditPlaceholderTextOptional")
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cell.keyboardType = .default
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case .allowedIPs:
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cell.placeholderText = tr("tunnelEditPlaceholderTextOptional")
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cell.keyboardType = .numbersAndPunctuation
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case .persistentKeepAlive:
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cell.placeholderText = tr("tunnelEditPlaceholderTextOff")
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cell.keyboardType = .numberPad
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case .excludePrivateIPs, .deletePeer:
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cell.keyboardType = .default
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case .rxBytes, .txBytes, .lastHandshakeTime:
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fatalError()
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}
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cell.isValueValid = !peerData.fieldsWithError.contains(field)
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cell.value = peerData[field]
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if field == .allowedIPs {
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let firstInterfaceSection = sections.firstIndex { $0 == .interface }!
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let interfaceSubSection = interfaceFieldsBySection.firstIndex { $0.contains(.dns) }!
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let dnsRow = interfaceFieldsBySection[interfaceSubSection].firstIndex { $0 == .dns }!
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cell.onValueBeingEdited = { [weak self, weak peerData] value in
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guard let self = self, let peerData = peerData else { return }
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let oldValue = peerData.shouldAllowExcludePrivateIPsControl
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peerData[.allowedIPs] = value
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if oldValue != peerData.shouldAllowExcludePrivateIPsControl, let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
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if peerData.shouldAllowExcludePrivateIPsControl {
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self.tableView.insertRows(at: [IndexPath(row: row, section: indexPath.section)], with: .fade)
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} else {
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self.tableView.deleteRows(at: [IndexPath(row: row, section: indexPath.section)], with: .fade)
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}
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}
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tableView.reloadRows(at: [IndexPath(row: dnsRow, section: firstInterfaceSection + interfaceSubSection)], with: .none)
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}
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} else {
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cell.onValueChanged = { [weak peerData] _, value in
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peerData?[field] = value
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}
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}
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return cell
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}
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private func addPeerCell(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("addPeerButtonTitle")
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cell.onTapped = { [weak self] in
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guard let self = self else { return }
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let shouldHideExcludePrivateIPs = (self.tunnelViewModel.peersData.count == 1 && self.tunnelViewModel.peersData[0].shouldAllowExcludePrivateIPsControl)
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let addedSectionIndices = self.appendEmptyPeer()
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tableView.performBatchUpdates({
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tableView.insertSections(addedSectionIndices, with: .fade)
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if shouldHideExcludePrivateIPs {
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if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
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let rowIndexPath = IndexPath(row: row, section: self.interfaceFieldsBySection.count /* First peer section */)
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self.tableView.deleteRows(at: [rowIndexPath], with: .fade)
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}
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}
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}, completion: nil)
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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 = onDemandFields[indexPath.row]
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if indexPath.row < 2 {
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let cell: SwitchCell = tableView.dequeueReusableCell(for: indexPath)
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cell.message = field.localizedUIString
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cell.isOn = onDemandViewModel.isEnabled(field: field)
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cell.onSwitchToggled = { [weak self] isOn in
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guard let self = self else { return }
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self.onDemandViewModel.setEnabled(field: field, isEnabled: isOn)
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let section = self.sections.firstIndex { $0 == .onDemand }!
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let indexPath = IndexPath(row: 2, section: section)
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if field == .wiFiInterface {
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if isOn {
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tableView.insertRows(at: [indexPath], with: .fade)
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} else {
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tableView.deleteRows(at: [indexPath], with: .fade)
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}
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}
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}
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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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func appendEmptyPeer() -> IndexSet {
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tunnelViewModel.appendEmptyPeer()
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loadSections()
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let addedPeerIndex = tunnelViewModel.peersData.count - 1
|
|
return IndexSet(integer: interfaceFieldsBySection.count + addedPeerIndex)
|
|
}
|
|
|
|
func deletePeer(peer: TunnelViewModel.PeerData) -> IndexSet {
|
|
tunnelViewModel.deletePeer(peer: peer)
|
|
loadSections()
|
|
return IndexSet(integer: interfaceFieldsBySection.count + peer.index)
|
|
}
|
|
}
|
|
|
|
extension TunnelEditTableViewController {
|
|
override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
|
|
if case .onDemand = sections[indexPath.section], indexPath.row == 2 {
|
|
return indexPath
|
|
} else {
|
|
return nil
|
|
}
|
|
}
|
|
|
|
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
|
|
switch sections[indexPath.section] {
|
|
case .onDemand:
|
|
assert(indexPath.row == 2)
|
|
tableView.deselectRow(at: indexPath, animated: true)
|
|
let ssidOptionVC = SSIDOptionEditTableViewController(option: onDemandViewModel.ssidOption, ssids: onDemandViewModel.selectedSSIDs)
|
|
ssidOptionVC.delegate = self
|
|
navigationController?.pushViewController(ssidOptionVC, animated: true)
|
|
default:
|
|
assertionFailure()
|
|
}
|
|
}
|
|
}
|
|
|
|
extension TunnelEditTableViewController: SSIDOptionEditTableViewControllerDelegate {
|
|
func ssidOptionSaved(option: ActivateOnDemandViewModel.OnDemandSSIDOption, ssids: [String]) {
|
|
onDemandViewModel.selectedSSIDs = ssids
|
|
onDemandViewModel.ssidOption = option
|
|
onDemandViewModel.fixSSIDOption()
|
|
if let onDemandSection = sections.firstIndex(where: { $0 == .onDemand }) {
|
|
if let ssidRowIndex = onDemandFields.firstIndex(of: .ssid) {
|
|
let indexPath = IndexPath(row: ssidRowIndex, section: onDemandSection)
|
|
tableView.reloadRows(at: [indexPath], with: .none)
|
|
}
|
|
}
|
|
}
|
|
}
|