466 lines
15 KiB
Swift
466 lines
15 KiB
Swift
//
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// ConfigurationViewController.swift
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// Passepartout-iOS
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//
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// Created by Davide De Rosa on 9/2/18.
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// Copyright (c) 2021 Davide De Rosa. All rights reserved.
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//
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// https://github.com/passepartoutvpn
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//
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// This file is part of Passepartout.
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//
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// Passepartout is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Passepartout is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
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//
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import UIKit
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import TunnelKit
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import SwiftyBeaver
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import PassepartoutCore
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import Convenience
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private let log = SwiftyBeaver.self
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class ConfigurationViewController: UIViewController, StrongTableHost {
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@IBOutlet private weak var tableView: UITableView!
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private lazy var itemRefresh = UIBarButtonItem(barButtonSystemItem: .refresh, target: self, action: #selector(refresh))
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var initialConfiguration: OpenVPN.Configuration!
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private lazy var configuration: OpenVPN.ConfigurationBuilder = initialConfiguration.builder()
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var originalConfigurationURL: URL?
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private var isEditable: Bool {
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return originalConfigurationURL != nil
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}
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var isServerPushed = false
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weak var delegate: ConfigurationModificationDelegate?
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// MARK: StrongTableHost
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let model: StrongTableModel<SectionType, RowType> = StrongTableModel()
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func reloadModel() {
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model.clear()
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// sections
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if isEditable {
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model.add(.reset)
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model.setHeader("", forSection: .reset)
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}
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if !isServerPushed {
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model.add(.tls)
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}
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// headers
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model.setHeader(L10n.Core.Configuration.Sections.Communication.header, forSection: .communication)
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model.setHeader(L10n.Core.Configuration.Sections.Tls.header, forSection: .tls)
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model.setHeader(L10n.Core.Configuration.Sections.Compression.header, forSection: .compression)
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model.setHeader(L10n.Core.Configuration.Sections.Other.header, forSection: .other)
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// footers
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if isEditable {
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model.setFooter(L10n.Core.Configuration.Sections.Reset.footer, forSection: .reset)
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}
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// rows
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if isServerPushed {
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var rows: [RowType]
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rows = []
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if let _ = configuration.cipher {
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rows.append(.cipher)
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}
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if let _ = configuration.digest {
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rows.append(.digest)
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}
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if !rows.isEmpty {
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model.add(.communication)
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model.set(rows, forSection: .communication)
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}
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rows = []
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if let _ = configuration.compressionFraming {
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rows.append(.compressionFraming)
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}
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if let _ = configuration.compressionAlgorithm {
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rows.append(.compressionAlgorithm)
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}
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if !rows.isEmpty {
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model.add(.compression)
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model.set(rows, forSection: .compression)
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}
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rows = []
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if let _ = configuration.keepAliveInterval {
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rows.append(.keepAlive)
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}
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if let _ = configuration.renegotiatesAfter {
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rows.append(.renegSeconds)
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}
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if let _ = configuration.randomizeEndpoint {
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rows.append(.randomEndpoint)
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}
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if !rows.isEmpty {
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model.add(.other)
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model.set(rows, forSection: .other)
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}
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} else {
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model.add(.communication)
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model.add(.compression)
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model.add(.other)
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model.set([.cipher, .digest], forSection: .communication)
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model.set([.compressionFraming, .compressionAlgorithm], forSection: .compression)
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model.set([.keepAlive, .renegSeconds, .randomEndpoint], forSection: .other)
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}
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if isEditable {
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model.set([.resetOriginal], forSection: .reset)
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}
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model.set([.client, .tlsWrapping, .eku], forSection: .tls)
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}
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// MARK: UIViewController
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override func viewDidLoad() {
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super.viewDidLoad()
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guard let _ = initialConfiguration else {
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fatalError("Initial configuration not set")
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}
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reloadModel()
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guard isEditable else {
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tableView.allowsSelection = false
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return
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}
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itemRefresh.isEnabled = false
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navigationItem.rightBarButtonItem = itemRefresh
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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if let ip = tableView.indexPathForSelectedRow {
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tableView.deselectRow(at: ip, animated: true)
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}
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}
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// MARK: Actions
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private func resetOriginalConfiguration() {
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guard let originalURL = originalConfigurationURL else {
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log.warning("Resetting with no original configuration set? Bad table model?")
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return
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}
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let parsingResult: OpenVPN.ConfigurationParser.Result
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do {
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parsingResult = try OpenVPN.ConfigurationParser.parsed(fromURL: originalURL)
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} catch let e {
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log.error("Could not parse original configuration: \(e)")
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return
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}
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configuration = parsingResult.configuration.builder()
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itemRefresh.isEnabled = !configuration.canCommunicate(with: initialConfiguration)
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initialConfiguration = parsingResult.configuration
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tableView.reloadData()
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delegate?.configuration(didUpdate: initialConfiguration)
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}
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@IBAction private func refresh() {
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guard isEditable else {
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return
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}
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initialConfiguration = configuration.build()
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itemRefresh.isEnabled = false
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delegate?.configurationShouldReinstall()
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}
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}
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// MARK: -
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extension ConfigurationViewController: UITableViewDataSource, UITableViewDelegate {
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enum SectionType: Int {
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case communication
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case reset
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case tls
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case compression
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case other
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}
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enum RowType: Int {
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case cipher
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case digest
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case resetOriginal
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case client
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case tlsWrapping
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case eku
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case compressionFraming
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case compressionAlgorithm
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case keepAlive
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case renegSeconds
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case randomEndpoint
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}
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func numberOfSections(in tableView: UITableView) -> Int {
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return model.numberOfSections
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}
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func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
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return model.header(forSection: section)
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}
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func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
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return model.footer(forSection: section)
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}
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func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
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return model.headerHeight(for: section)
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}
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func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return model.numberOfRows(forSection: section)
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}
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func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let row = model.row(at: indexPath)
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let V = L10n.Core.Configuration.Cells.self
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let cell = Cells.setting.dequeue(from: tableView, for: indexPath)
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if !isEditable {
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cell.accessoryType = .none
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}
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cell.isTappable = isEditable
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switch row {
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case .cipher:
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cell.leftText = V.Cipher.caption
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cell.rightText = configuration.fallbackCipher.description
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case .digest:
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cell.leftText = V.Digest.caption
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cell.rightText = configuration.fallbackDigest.description
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case .compressionFraming:
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cell.leftText = V.CompressionFraming.caption
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cell.rightText = configuration.fallbackCompressionFraming.cellDescription
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case .compressionAlgorithm:
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cell.leftText = V.CompressionAlgorithm.caption
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if let compressionAlgorithm = configuration.compressionAlgorithm {
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cell.rightText = compressionAlgorithm.cellDescription
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} else {
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cell.rightText = L10n.Core.Global.Values.disabled
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}
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cell.isTappable = (configuration.compressionFraming != .disabled)
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case .resetOriginal:
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cell.leftText = V.ResetOriginal.caption
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cell.applyAction(.current)
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case .client:
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cell.leftText = V.Client.caption
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cell.rightText = (configuration.clientCertificate != nil) ? V.Client.Value.enabled : V.Client.Value.disabled
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cell.accessoryType = .none
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cell.isTappable = false
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case .tlsWrapping:
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cell.leftText = V.TlsWrapping.caption
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if let strategy = configuration.tlsWrap?.strategy {
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switch strategy {
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case .auth:
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cell.rightText = V.TlsWrapping.Value.auth
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case .crypt:
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cell.rightText = V.TlsWrapping.Value.crypt
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}
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} else {
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cell.rightText = L10n.Core.Global.Values.disabled
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}
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cell.accessoryType = .none
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cell.isTappable = false
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case .eku:
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cell.leftText = V.Eku.caption
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cell.rightText = (configuration.checksEKU ?? false) ? L10n.Core.Global.Values.enabled : L10n.Core.Global.Values.disabled
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cell.accessoryType = .none
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cell.isTappable = false
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case .keepAlive:
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cell.leftText = V.KeepAlive.caption
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if let keepAlive = configuration.keepAliveInterval, keepAlive > 0 {
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cell.rightText = V.KeepAlive.Value.seconds(Int(keepAlive))
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} else {
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cell.rightText = L10n.Core.Global.Values.disabled
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}
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cell.accessoryType = .none
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cell.isTappable = false
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case .renegSeconds:
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cell.leftText = V.RenegotiationSeconds.caption
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if let reneg = configuration.renegotiatesAfter, reneg > 0 {
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cell.rightText = V.RenegotiationSeconds.Value.after(TimeInterval(reneg).localized)
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} else {
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cell.rightText = L10n.Core.Global.Values.disabled
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}
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cell.accessoryType = .none
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cell.isTappable = false
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case .randomEndpoint:
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cell.leftText = V.RandomEndpoint.caption
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cell.rightText = (configuration.randomizeEndpoint ?? false) ? L10n.Core.Global.Values.enabled : L10n.Core.Global.Values.disabled
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cell.accessoryType = .none
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cell.isTappable = false
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}
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return cell
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}
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func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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guard isEditable else {
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fatalError("Table should not allow selection when isEditable is false")
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}
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let settingCell = tableView.cellForRow(at: indexPath) as? SettingTableViewCell
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switch model.row(at: indexPath) {
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case .cipher:
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let vc = SingleOptionViewController<OpenVPN.Cipher>()
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vc.applyTint(.current)
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vc.title = settingCell?.leftText
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vc.options = OpenVPN.Cipher.available
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vc.selectedOption = configuration.cipher
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vc.descriptionBlock = { $0.description }
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vc.selectionBlock = { [weak self] in
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self?.configuration.cipher = $0
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self?.popAndCheckRefresh()
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}
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navigationController?.pushViewController(vc, animated: true)
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case .digest:
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let vc = SingleOptionViewController<OpenVPN.Digest>()
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vc.applyTint(.current)
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vc.title = settingCell?.leftText
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vc.options = OpenVPN.Digest.available
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vc.selectedOption = configuration.digest
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vc.descriptionBlock = { $0.description }
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vc.selectionBlock = { [weak self] in
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self?.configuration.digest = $0
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self?.popAndCheckRefresh()
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}
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navigationController?.pushViewController(vc, animated: true)
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case .compressionFraming:
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let vc = SingleOptionViewController<OpenVPN.CompressionFraming>()
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vc.applyTint(.current)
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vc.title = settingCell?.leftText
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vc.options = OpenVPN.CompressionFraming.available
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vc.selectedOption = configuration.compressionFraming ?? .disabled
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vc.descriptionBlock = { $0.cellDescription }
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vc.selectionBlock = { [weak self] in
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self?.configuration.compressionFraming = $0
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if $0 == .disabled {
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self?.configuration.compressionAlgorithm = .disabled
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}
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self?.popAndCheckRefresh()
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}
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navigationController?.pushViewController(vc, animated: true)
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case .compressionAlgorithm:
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guard configuration.compressionFraming != .disabled else {
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return
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}
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let vc = SingleOptionViewController<OpenVPN.CompressionAlgorithm>()
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vc.applyTint(.current)
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vc.title = settingCell?.leftText
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vc.options = OpenVPN.CompressionAlgorithm.available
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vc.selectedOption = configuration.compressionAlgorithm ?? .disabled
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vc.descriptionBlock = { $0.cellDescription }
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vc.selectionBlock = { [weak self] in
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self?.configuration.compressionAlgorithm = $0
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self?.popAndCheckRefresh()
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}
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navigationController?.pushViewController(vc, animated: true)
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case .resetOriginal:
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tableView.deselectRow(at: indexPath, animated: true)
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resetOriginalConfiguration()
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default:
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break
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}
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}
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// MARK: Helpers
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private func popAndCheckRefresh() {
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itemRefresh.isEnabled = !configuration.canCommunicate(with: initialConfiguration)
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tableView.reloadData()
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navigationController?.popViewController(animated: true)
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delegate?.configuration(didUpdate: configuration.build())
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}
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}
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// MARK: -
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private extension OpenVPN.CompressionFraming {
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var cellDescription: String {
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let V = L10n.Core.Configuration.Cells.self
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switch self {
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case .disabled:
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return L10n.Core.Global.Values.disabled
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case .compLZO:
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return V.CompressionFraming.Value.lzo
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case .compress:
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return V.CompressionFraming.Value.compress
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}
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}
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}
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private extension OpenVPN.CompressionAlgorithm {
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var cellDescription: String {
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let V = L10n.Core.Configuration.Cells.self
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switch self {
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case .disabled:
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return L10n.Core.Global.Values.disabled
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case .LZO:
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return V.CompressionAlgorithm.Value.lzo
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case .other:
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return V.CompressionAlgorithm.Value.other
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}
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}
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}
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