106 lines
3.5 KiB
Swift
106 lines
3.5 KiB
Swift
//
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// PacketTunnelProvider.swift
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// Passepartout
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//
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// Created by Davide De Rosa on 2/24/24.
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// Copyright (c) 2024 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 CommonLibrary
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@preconcurrency import NetworkExtension
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import PassepartoutKit
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final class PacketTunnelProvider: NEPacketTunnelProvider, @unchecked Sendable {
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@MainActor
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private let context: TunnelContext = .shared
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@MainActor
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private let dependencies: Dependencies = .shared
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private var fwd: NEPTPForwarder?
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override func startTunnel(options: [String: NSObject]? = nil) async throws {
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PassepartoutConfiguration.shared.configureLogging(
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to: BundleConfiguration.urlForTunnelLog,
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parameters: Constants.shared.log,
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logsPrivateData: UserDefaults.appGroup.bool(forKey: AppPreference.logsPrivateData.key)
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)
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do {
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fwd = try await NEPTPForwarder(
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provider: self,
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decoder: dependencies.neProtocolCoder(),
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registry: dependencies.registry,
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environment: dependencies.tunnelEnvironment(),
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profileBlock: context.processor.willStart
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)
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guard let fwd else {
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fatalError("NEPTPForwarder nil without throwing error?")
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}
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try await checkEligibility(of: fwd.profile, environment: dependencies.tunnelEnvironment())
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try await fwd.startTunnel(options: options)
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} catch {
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pp_log(.app, .fault, "Unable to start tunnel: \(error)")
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PassepartoutConfiguration.shared.flushLog()
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throw error
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}
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}
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override func stopTunnel(with reason: NEProviderStopReason) async {
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await fwd?.stopTunnel(with: reason)
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fwd = nil
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PassepartoutConfiguration.shared.flushLog()
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}
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override func cancelTunnelWithError(_ error: (any Error)?) {
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PassepartoutConfiguration.shared.flushLog()
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super.cancelTunnelWithError(error)
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}
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override func handleAppMessage(_ messageData: Data) async -> Data? {
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await fwd?.handleAppMessage(messageData)
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}
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override func wake() {
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fwd?.wake()
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}
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override func sleep() async {
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await fwd?.sleep()
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}
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}
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// MARK: - Eligibility
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@MainActor
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private extension PacketTunnelProvider {
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func checkEligibility(of profile: Profile, environment: TunnelEnvironment) async throws {
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await context.iapManager.reloadReceipt()
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do {
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try context.iapManager.verify(profile)
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} catch {
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let error = PassepartoutError(.App.ineligibleProfile)
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environment.setEnvironmentValue(error.code, forKey: TunnelEnvironmentKeys.lastErrorCode)
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pp_log(.app, .fault, "Verification failed for profile \(profile.id), shutting down: \(error)")
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throw error
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}
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}
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}
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