mirror of
https://github.com/passepartoutvpn/passepartout-apple.git
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688 lines
23 KiB
Swift
688 lines
23 KiB
Swift
//
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// ConnectionService.swift
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// Passepartout
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//
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// Created by Davide De Rosa on 9/3/18.
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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 Foundation
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import TunnelKit
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import NetworkExtension
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import SwiftyBeaver
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private let log = SwiftyBeaver.self
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public protocol ConnectionServiceDelegate: class {
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func connectionService(didAdd profile: ConnectionProfile)
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func connectionService(didRename profile: ConnectionProfile, to newTitle: String)
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func connectionService(didRemoveProfileWithKey key: ProfileKey)
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func connectionService(willDeactivate profile: ConnectionProfile)
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func connectionService(didActivate profile: ConnectionProfile)
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func connectionService(didUpdate profile: ConnectionProfile)
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}
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public class ConnectionService: Codable {
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public enum CodingKeys: String, CodingKey {
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case build
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case appGroup
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case baseConfiguration
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case activeProfileKey
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case preferences
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case hostTitles
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}
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public struct NotificationKeys {
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public static let dataCount = "DataCount"
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}
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public static let didUpdateDataCount = Notification.Name("ConnectionServiceDidUpdateDataCount")
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public var directory: String? = nil
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public var rootURL: URL {
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var url = GroupConstants.App.documentsURL
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if let directory = directory {
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url.appendPathComponent(directory)
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}
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return url
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}
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var providersURL: URL {
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return rootURL.appendingPathComponent(AppConstants.Store.providersDirectory)
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}
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var hostsURL: URL {
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return rootURL.appendingPathComponent(AppConstants.Store.hostsDirectory)
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}
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private var build: Int
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private let appGroup: String
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private let defaults: UserDefaults
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private let keychain: Keychain
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public var baseConfiguration: OpenVPNTunnelProvider.Configuration
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private var cache: [ProfileKey: ConnectionProfile]
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// XXX: access needed by +Migration
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var hostTitles: [String: String]
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public internal(set) var activeProfileKey: ProfileKey? {
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willSet {
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if let oldProfile = activeProfile {
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delegate?.connectionService(willDeactivate: oldProfile)
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}
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}
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didSet {
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if let newProfile = activeProfile {
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delegate?.connectionService(didActivate: newProfile)
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}
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}
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}
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public var activeProfile: ConnectionProfile? {
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guard let id = activeProfileKey else {
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return nil
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}
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var hit = cache[id]
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if let placeholder = hit as? PlaceholderConnectionProfile {
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hit = profile(withContext: placeholder.context, id: placeholder.id)
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cache[id] = hit
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}
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return hit
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}
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public let preferences: EditablePreferences
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public weak var delegate: ConnectionServiceDelegate?
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public init(withAppGroup appGroup: String, baseConfiguration: OpenVPNTunnelProvider.Configuration) {
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guard let defaults = UserDefaults(suiteName: appGroup) else {
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fatalError("No entitlements for group '\(appGroup)'")
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}
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build = GroupConstants.App.buildNumber
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self.appGroup = appGroup
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self.defaults = defaults
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keychain = Keychain(group: appGroup)
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self.baseConfiguration = baseConfiguration
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activeProfileKey = nil
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preferences = EditablePreferences()
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cache = [:]
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hostTitles = [:]
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ensureDirectoriesExistence()
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}
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// MARK: Codable
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public required init(from decoder: Decoder) throws {
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let container = try decoder.container(keyedBy: CodingKeys.self)
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let appGroup = try container.decode(String.self, forKey: .appGroup)
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guard let defaults = UserDefaults(suiteName: appGroup) else {
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fatalError("No entitlements for group '\(appGroup)'")
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}
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build = try container.decode(Int.self, forKey: .build)
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self.appGroup = appGroup
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self.defaults = defaults
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keychain = Keychain(group: appGroup)
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baseConfiguration = try container.decode(OpenVPNTunnelProvider.Configuration.self, forKey: .baseConfiguration)
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activeProfileKey = try container.decodeIfPresent(ProfileKey.self, forKey: .activeProfileKey)
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preferences = try container.decode(EditablePreferences.self, forKey: .preferences)
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cache = [:]
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hostTitles = try container.decode([String: String].self, forKey: .hostTitles)
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ensureDirectoriesExistence()
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}
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public func encode(to encoder: Encoder) throws {
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build = GroupConstants.App.buildNumber
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var container = encoder.container(keyedBy: CodingKeys.self)
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try container.encode(build, forKey: .build)
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try container.encode(appGroup, forKey: .appGroup)
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try container.encode(baseConfiguration, forKey: .baseConfiguration)
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try container.encodeIfPresent(activeProfileKey, forKey: .activeProfileKey)
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try container.encode(preferences, forKey: .preferences)
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try container.encode(hostTitles, forKey: .hostTitles)
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}
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// MARK: Serialization
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public func loadProfiles() {
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let fm = FileManager.default
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do {
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let files = try fm.contentsOfDirectory(at: providersURL, includingPropertiesForKeys: nil, options: [])
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// log.debug("Found \(files.count) provider files: \(files)")
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for entry in files {
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guard let id = ConnectionService.profileId(fromURL: entry) else {
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continue
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}
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let key = ProfileKey(.provider, id)
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cache[key] = PlaceholderConnectionProfile(key)
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}
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} catch let e {
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log.warning("Could not list provider contents: \(e) (\(providersURL))")
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}
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do {
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let files = try fm.contentsOfDirectory(at: hostsURL, includingPropertiesForKeys: nil, options: [])
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// log.debug("Found \(files.count) host files: \(files)")
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for entry in files {
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guard let id = ConnectionService.profileId(fromURL: entry) else {
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continue
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}
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let key = ProfileKey(.host, id)
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cache[key] = PlaceholderConnectionProfile(key)
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}
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} catch let e {
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log.warning("Could not list host contents: \(e) (\(hostsURL))")
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}
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// clean up hostTitles if necessary
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let staleHostIds = hostTitles.keys.filter { cache[ProfileKey(.host, $0)] == nil }
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staleHostIds.forEach {
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hostTitles.removeValue(forKey: $0)
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}
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}
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public func saveProfiles() {
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let encoder = JSONEncoder()
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for profile in cache.values {
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saveProfile(profile, withEncoder: encoder)
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}
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}
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private func ensureDirectoriesExistence() {
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let fm = FileManager.default
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do {
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try fm.createDirectory(at: providersURL, withIntermediateDirectories: false, attributes: nil)
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} catch let e {
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log.warning("Could not create providers folder: \(e) (\(providersURL))")
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}
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do {
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try fm.createDirectory(at: hostsURL, withIntermediateDirectories: false, attributes: nil)
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} catch let e {
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log.warning("Could not create hosts folder: \(e) (\(hostsURL))")
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}
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}
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private func saveProfile(_ profile: ConnectionProfile, withEncoder encoder: JSONEncoder) {
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do {
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let url = profileURL(ProfileKey(profile))
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var optData: Data?
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if let providerProfile = profile as? ProviderConnectionProfile {
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optData = try encoder.encode(providerProfile)
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} else if let hostProfile = profile as? HostConnectionProfile {
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optData = try encoder.encode(hostProfile)
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} else if let placeholder = profile as? PlaceholderConnectionProfile {
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log.debug("Skipped placeholder \(placeholder)")
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} else {
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fatalError("Attempting to add an unhandled profile type: \(type(of: profile))")
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}
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guard let data = optData else {
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return
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}
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try data.write(to: url)
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log.debug("Serialized profile \(profile)")
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} catch let e {
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log.warning("Could not serialize profile \(profile): \(e)")
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}
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}
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public func profile(withContext context: Context, id: String) -> ConnectionProfile? {
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return profile(withKey: ProfileKey(context, id))
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}
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public func profile(withKey key: ProfileKey) -> ConnectionProfile? {
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var profile = cache[key]
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if let _ = profile as? PlaceholderConnectionProfile {
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let decoder = JSONDecoder()
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do {
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let data = try profileData(key)
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switch key.context {
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case .provider:
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let providerProfile = try decoder.decode(ProviderConnectionProfile.self, from: data)
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// XXX: fix renamed presets, fall back to default
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if providerProfile.preset == nil {
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providerProfile.presetId = providerProfile.infrastructure.defaults.preset
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}
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// XXX: fix renamed pool, fall back to default
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if providerProfile.pool == nil, let fallbackPool = providerProfile.infrastructure.defaultPool() {
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providerProfile.poolId = fallbackPool.id
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}
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// XXX: fix unsupported preset
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providerProfile.setSupportedPreset()
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// XXX: patch empty favorites
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if providerProfile.favoriteGroupIds == nil {
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providerProfile.favoriteGroupIds = []
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}
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profile = providerProfile
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case .host:
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let hostProfile = try decoder.decode(HostConnectionProfile.self, from: data)
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profile = hostProfile
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}
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cache[key] = profile
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} catch let e {
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log.error("Could not decode profile JSON: \(e)")
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// // drop corrupt cache entry
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// cache.removeValue(forKey: key)
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// try? FileManager.default.removeItem(at: profileURL(key))
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return nil
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}
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}
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// XXX: preload trusted networks in a backwards compatible manner (deserialization)
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if profile?.trustedNetworks == nil {
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profile?.trustedNetworks = TrustedNetworks()
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}
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// propagate delegate
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profile?.serviceDelegate = delegate
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return profile
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}
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public func allProfileKeys() -> [ProfileKey] {
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return Array(cache.keys)
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}
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public func ids(forContext context: Context) -> [String] {
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return cache.keys.filter { $0.context == context }.map { $0.id }
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}
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public func contextURL(_ key: ProfileKey) -> URL {
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switch key.context {
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case .provider:
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return providersURL
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case .host:
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return hostsURL
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}
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}
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public func profileURL(_ key: ProfileKey) -> URL {
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return contextURL(key).appendingPathComponent(key.id).appendingPathExtension("json")
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}
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public func profileData(_ key: ProfileKey) throws -> Data {
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return try Data(contentsOf: profileURL(key))
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}
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private static func profileId(fromURL url: URL) -> String? {
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guard url.pathExtension == "json" else {
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return nil
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}
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return url.deletingPathExtension().lastPathComponent
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}
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// MARK: Profiles
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public func hasProfiles() -> Bool {
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return !cache.isEmpty
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}
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public func addProfile(_ profile: ConnectionProfile, credentials: Credentials?) -> Bool {
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guard cache.index(forKey: ProfileKey(profile)) == nil else {
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return false
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}
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addOrReplaceProfile(profile, credentials: credentials)
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return true
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}
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public func addOrReplaceProfile(_ profile: ConnectionProfile, credentials: Credentials?, title: String? = nil) {
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let key = ProfileKey(profile)
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cache[key] = profile
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if key.context == .host {
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hostTitles[key.id] = title
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}
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try? setCredentials(credentials, for: profile)
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if cache.count == 1 {
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activeProfileKey = key
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}
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delegate?.connectionService(didAdd: profile)
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// serialization (can fail)
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saveProfile(profile, withEncoder: JSONEncoder())
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}
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public func renameProfile(_ key: ProfileKey, to newTitle: String) {
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precondition(key.context == .host, "Can only rename a HostConnectionProfile")
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guard let profile = cache[key] else {
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return
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}
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hostTitles[key.id] = newTitle
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delegate?.connectionService(didRename: profile, to: newTitle)
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}
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public func renameProfile(_ profile: ConnectionProfile, to newTitle: String) {
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renameProfile(ProfileKey(profile), to: newTitle)
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}
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public func removeProfile(_ key: ProfileKey) {
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guard let profile = cache[key] else {
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return
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}
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if key == activeProfileKey {
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activeProfileKey = nil
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}
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cache.removeValue(forKey: key)
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if key.context == .host {
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hostTitles.removeValue(forKey: key.id)
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}
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removeCredentials(for: profile)
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delegate?.connectionService(didRemoveProfileWithKey: key)
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// serialization (can fail)
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do {
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let fm = FileManager.default
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if let cfg = configurationURL(for: key) {
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try? fm.removeItem(at: cfg)
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}
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let url = profileURL(key)
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try fm.removeItem(at: url)
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log.debug("Deleted removed profile '\(profile.id)'")
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} catch let e {
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log.warning("Could not delete profile '\(profile.id)': \(e)")
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}
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}
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public func containsProfile(_ key: ProfileKey) -> Bool {
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return cache.index(forKey: key) != nil
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}
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public func containsProfile(_ profile: ConnectionProfile) -> Bool {
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return containsProfile(ProfileKey(profile))
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}
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public func hasActiveProfile() -> Bool {
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return activeProfileKey != nil
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}
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public func isActiveProfile(_ key: ProfileKey) -> Bool {
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return key == activeProfileKey
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}
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public func isActiveProfile(_ profile: ConnectionProfile) -> Bool {
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return isActiveProfile(ProfileKey(profile))
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}
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public func activateProfile(_ profile: ConnectionProfile) {
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activeProfileKey = ProfileKey(profile)
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}
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public func existingHostId(withTitle title: String) -> String? {
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for id in hostTitles.keys {
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guard let _ = cache[ProfileKey(.host, id)] else {
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continue
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}
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if hostTitles[id] == title {
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return id
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}
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}
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return nil
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}
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public func hostProfile(withTitle title: String) -> HostConnectionProfile? {
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guard let id = existingHostId(withTitle: title) else {
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return nil
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}
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return profile(withContext: .host, id: id) as? HostConnectionProfile
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}
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// MARK: Credentials
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public func needsCredentials(for profile: ConnectionProfile) -> Bool {
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guard profile.requiresCredentials else {
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return false
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}
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guard let creds = credentials(for: profile) else {
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return true
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}
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return !creds.isValid
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}
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public func credentials(for profile: ConnectionProfile) -> Credentials? {
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guard let username = profile.username else {
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return nil
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}
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let password = (try? keychain.password(for: username, context: profile.passwordContext)) ?? "" // make password optional
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return Credentials(username, password)
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}
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public func setCredentials(_ credentials: Credentials?, for profile: ConnectionProfile) throws {
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profile.username = credentials?.username
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try profile.setPassword(credentials?.password, in: keychain)
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}
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public func removeCredentials(for profile: ConnectionProfile) {
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profile.removePassword(in: keychain)
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}
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// MARK: VPN
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public func vpnConfiguration() throws -> NetworkExtensionVPNConfiguration {
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guard let profile = activeProfile else {
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throw ApplicationError.missingProfile
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}
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let creds = credentials(for: profile)
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if profile.requiresCredentials {
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guard creds != nil else {
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throw ApplicationError.missingCredentials
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}
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}
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var cfg = try profile.generate(from: baseConfiguration, preferences: preferences)
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// override network settings
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if let choices = profile.networkChoices, let settings = profile.manualNetworkSettings {
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var builder = cfg.builder()
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var sessionBuilder = builder.sessionConfiguration.builder()
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// enforce default gateway for providers unless "Manual"
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if type(of: profile) == ProviderConnectionProfile.self {
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if choices.gateway == .manual {
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sessionBuilder.applyGateway(from: choices, settings: settings)
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}
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} else {
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sessionBuilder.applyGateway(from: choices, settings: settings)
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}
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sessionBuilder.applyDNS(from: choices, settings: settings)
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sessionBuilder.applyProxy(from: choices, settings: settings)
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sessionBuilder.applyMTU(from: choices, settings: settings)
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builder.sessionConfiguration = sessionBuilder.build()
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cfg = builder.build()
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}
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let protocolConfiguration = try cfg.generatedTunnelProtocol(
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withBundleIdentifier: AppConstants.App.tunnelBundleId,
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appGroup: appGroup,
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context: profile.passwordContext,
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username: creds?.username
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)
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protocolConfiguration.disconnectOnSleep = preferences.disconnectsOnSleep
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log.verbose("Configuration:")
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log.verbose(protocolConfiguration)
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var rules: [NEOnDemandRule] = []
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do {
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try ProductManager.shared.verifyEligible(forFeature: .trustedNetworks)
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#if os(iOS)
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if profile.trustedNetworks.includesMobile {
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let rule = policyRule(for: profile)
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rule.interfaceTypeMatch = .cellular
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rules.append(rule)
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}
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#else
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if profile.trustedNetworks.includesEthernet {
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let rule = policyRule(for: profile)
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rule.interfaceTypeMatch = .ethernet
|
|
rules.append(rule)
|
|
}
|
|
#endif
|
|
let reallyTrustedWifis = Array(profile.trustedNetworks.includedWiFis.filter { $1 }.keys)
|
|
if !reallyTrustedWifis.isEmpty {
|
|
let rule = policyRule(for: profile)
|
|
rule.interfaceTypeMatch = .wiFi
|
|
rule.ssidMatch = reallyTrustedWifis
|
|
rules.append(rule)
|
|
}
|
|
} catch {
|
|
}
|
|
let connection = NEOnDemandRuleConnect()
|
|
connection.interfaceTypeMatch = .any
|
|
rules.append(connection)
|
|
|
|
return NetworkExtensionVPNConfiguration(
|
|
title: screenTitle(ProfileKey(profile)),
|
|
protocolConfiguration: protocolConfiguration,
|
|
onDemandRules: rules
|
|
)
|
|
}
|
|
|
|
private func policyRule(for profile: ConnectionProfile) -> NEOnDemandRule {
|
|
switch profile.trustedNetworks.policy {
|
|
case .ignore:
|
|
return NEOnDemandRuleIgnore()
|
|
|
|
case .disconnect:
|
|
return NEOnDemandRuleDisconnect()
|
|
}
|
|
}
|
|
|
|
public var vpnLog: String {
|
|
return baseConfiguration.existingLog(in: appGroup) ?? ""
|
|
}
|
|
|
|
public func eraseVpnLog() {
|
|
log.info("Erasing VPN log...")
|
|
guard let url = baseConfiguration.urlForLog(in: appGroup) else {
|
|
return
|
|
}
|
|
try? FileManager.default.removeItem(at: url)
|
|
}
|
|
|
|
public var vpnLastError: OpenVPNTunnelProvider.ProviderError? {
|
|
return baseConfiguration.lastError(in: appGroup)
|
|
}
|
|
|
|
public func clearVpnLastError() {
|
|
baseConfiguration.clearLastError(in: appGroup)
|
|
}
|
|
|
|
public func observeVPNDataCount(milliseconds: Int) {
|
|
reportDataCountAndRepeat(after: milliseconds)
|
|
}
|
|
|
|
private func reportDataCountAndRepeat(after milliseconds: Int) {
|
|
reportDataCount()
|
|
DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(milliseconds)) { [weak self] in
|
|
self?.reportDataCountAndRepeat(after: milliseconds)
|
|
}
|
|
}
|
|
|
|
private func reportDataCount() {
|
|
guard let dataCount = vpnDataCount else {
|
|
return
|
|
}
|
|
NotificationCenter.default.post(name: ConnectionService.didUpdateDataCount, object: nil, userInfo: [NotificationKeys.dataCount: dataCount])
|
|
}
|
|
|
|
public var vpnDataCount: (Int, Int)? {
|
|
return baseConfiguration.dataCount(in: appGroup)
|
|
}
|
|
}
|
|
|
|
public extension ConnectionService {
|
|
func providerNames() -> [Infrastructure.Name] {
|
|
return ids(forContext: .provider)
|
|
}
|
|
|
|
func hostIds() -> [String] {
|
|
return ids(forContext: .host)
|
|
}
|
|
|
|
func sortedProviderNames() -> [Infrastructure.Name] {
|
|
return providerNames().sorted()
|
|
}
|
|
|
|
func sortedHostIds() -> [String] {
|
|
return hostIds().sorted {
|
|
let title1 = screenTitle(ProfileKey(.host, $0))
|
|
let title2 = screenTitle(ProfileKey(.host, $1))
|
|
return title1.lowercased() < title2.lowercased()
|
|
}
|
|
}
|
|
|
|
func screenTitle(forHostId id: String) -> String {
|
|
return screenTitle(ProfileKey(.host, id))
|
|
}
|
|
|
|
func screenTitle(forProviderName name: Infrastructure.Name) -> String {
|
|
return screenTitle(ProfileKey(.provider, name))
|
|
}
|
|
|
|
func screenTitle(_ key: ProfileKey) -> String {
|
|
switch key.context {
|
|
case .provider:
|
|
if let metadata = InfrastructureFactory.shared.metadata(forName: key.id) {
|
|
return metadata.description
|
|
}
|
|
|
|
case .host:
|
|
if let title = hostTitles[key.id] {
|
|
return title
|
|
}
|
|
}
|
|
return key.id
|
|
}
|
|
}
|