78 lines
2.1 KiB
Swift
78 lines
2.1 KiB
Swift
//
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// XORMethod.swift
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// TunnelKit
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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 Foundation
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import CTunnelKitOpenVPNCore
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extension OpenVPN {
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/// The obfuscation method.
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public enum XORMethod: Codable, Equatable {
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/// XORs the bytes in each buffer with the given mask.
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case xormask(mask: Data)
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/// XORs each byte with its position in the packet.
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case xorptrpos
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/// Reverses the order of bytes in each buffer except for the first (abcde becomes aedcb).
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case reverse
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/// Performs several of the above steps (xormask -> xorptrpos -> reverse -> xorptrpos).
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case obfuscate(mask: Data)
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/// This method mapped to native enumeration.
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public var native: XORMethodNative {
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switch self {
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case .xormask:
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return .mask
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case .xorptrpos:
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return .ptrPos
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case .reverse:
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return .reverse
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case .obfuscate:
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return .obfuscate
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}
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}
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/// The optionally associated mask.
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public var mask: Data? {
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switch self {
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case .xormask(let mask):
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return mask
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case .obfuscate(let mask):
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return mask
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default:
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return nil
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}
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}
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}
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}
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