88 lines
3.1 KiB
Swift
88 lines
3.1 KiB
Swift
//
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// XORTests.swift
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// TunnelKitOpenVPNTests
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//
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// Created by Davide De Rosa on 11/4/22.
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// Copyright (c) 2023 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 TunnelKit.
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//
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// TunnelKit 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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// TunnelKit 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 TunnelKit. If not, see <http://www.gnu.org/licenses/>.
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//
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import XCTest
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import TunnelKitCore
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import TunnelKitOpenVPNProtocol
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import CTunnelKitOpenVPNProtocol
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final class XORTests: XCTestCase {
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private let mask = Data(hex: "f76dab30")
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override func setUpWithError() throws {
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// Put setup code here. This method is called before the invocation of each test method in the class.
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}
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override func tearDownWithError() throws {
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// Put teardown code here. This method is called after the invocation of each test method in the class.
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}
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func testMask() throws {
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let processor = XORProcessor(method: .xormask(mask: mask))
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processor.assertReversible(try SecureRandom.data(length: 1000))
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}
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func testPtrPos() throws {
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let processor = XORProcessor(method: .xorptrpos)
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processor.assertReversible(try SecureRandom.data(length: 1000))
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}
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func testReverse() throws {
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let processor = XORProcessor(method: .reverse)
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processor.assertReversible(try SecureRandom.data(length: 1000))
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}
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func testObfuscate() throws {
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let processor = XORProcessor(method: .obfuscate(mask: mask))
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processor.assertReversible(try SecureRandom.data(length: 1000))
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}
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func testPacketStream() throws {
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let data = try SecureRandom.data(length: 10000)
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PacketStream.assertReversible(data, method: .none)
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PacketStream.assertReversible(data, method: .mask, mask: mask)
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PacketStream.assertReversible(data, method: .ptrPos)
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PacketStream.assertReversible(data, method: .reverse)
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PacketStream.assertReversible(data, method: .obfuscate, mask: mask)
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}
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}
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private extension XORProcessor {
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func assertReversible(_ data: Data) {
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let xored = processPacket(data, outbound: true)
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XCTAssertEqual(processPacket(xored, outbound: false), data)
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}
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}
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private extension PacketStream {
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static func assertReversible(_ data: Data, method: XORMethodNative, mask: Data? = nil) {
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var until = 0
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let outStream = PacketStream.outboundStream(fromPacket: data, xorMethod: method, xorMask: mask)
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let inStream = PacketStream.packets(fromInboundStream: outStream, until: &until, xorMethod: method, xorMask: mask)
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let originalData = Data(inStream.joined())
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XCTAssertEqual(data.toHex(), originalData.toHex())
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}
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}
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