Replace NEKit dependency with reduced subset
This commit is contained in:
167
GlassVPN/zhuhaow-NEKit/Socket/AdapterSocket/Shadowsocks/StreamObfuscater.swift
Executable file
167
GlassVPN/zhuhaow-NEKit/Socket/AdapterSocket/Shadowsocks/StreamObfuscater.swift
Executable file
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//import Foundation
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//
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//extension ShadowsocksAdapter {
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// public struct StreamObfuscater {
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// public class Factory {
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// public init() {}
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//
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// public func build(for session: ConnectSession) -> StreamObfuscaterBase {
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// return StreamObfuscaterBase(for: session)
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// }
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// }
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//
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// public class StreamObfuscaterBase {
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// public weak var inputStreamProcessor: ShadowsocksAdapter!
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// private weak var _outputStreamProcessor: CryptoStreamProcessor!
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// public var outputStreamProcessor: CryptoStreamProcessor! {
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// get {
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// return _outputStreamProcessor
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// }
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// set {
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// _outputStreamProcessor = newValue
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// key = _outputStreamProcessor?.key
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// writeIV = _outputStreamProcessor?.writeIV
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// }
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// }
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//
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// public var key: Data?
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// public var writeIV: Data?
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//
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// let session: ConnectSession
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//
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// init(for session: ConnectSession) {
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// self.session = session
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// }
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//
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// func output(data: Data) {}
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// func input(data: Data) throws {}
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// }
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//
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// public class OriginStreamObfuscater: StreamObfuscaterBase {
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// public class Factory: StreamObfuscater.Factory {
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// public override init() {}
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//
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// public override func build(for session: ConnectSession) -> ShadowsocksAdapter.StreamObfuscater.StreamObfuscaterBase {
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// return OriginStreamObfuscater(for: session)
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// }
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// }
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//
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// private var requestSend = false
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//
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// private func requestData(withData data: Data) -> Data {
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// let hostLength = session.host.utf8.count
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// let length = 1 + 1 + hostLength + 2 + data.count
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// var response = Data(count: length)
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// response[0] = 3
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// response[1] = UInt8(hostLength)
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// response.replaceSubrange(2..<2+hostLength, with: session.host.utf8)
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// var beport = UInt16(session.port).bigEndian
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// withUnsafeBytes(of: &beport) {
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// response.replaceSubrange(2+hostLength..<4+hostLength, with: $0)
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// }
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// response.replaceSubrange(4+hostLength..<length, with: data)
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// return response
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// }
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//
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// public override func input(data: Data) throws {
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// inputStreamProcessor!.input(data: data)
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// }
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//
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// public override func output(data: Data) {
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// if requestSend {
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// return outputStreamProcessor!.output(data: data)
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// } else {
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// requestSend = true
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// return outputStreamProcessor!.output(data: requestData(withData: data))
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// }
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// }
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// }
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//
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// public class OTAStreamObfuscater: StreamObfuscaterBase {
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// public class Factory: StreamObfuscater.Factory {
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// public override init() {}
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//
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// public override func build(for session: ConnectSession) -> ShadowsocksAdapter.StreamObfuscater.StreamObfuscaterBase {
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// return OTAStreamObfuscater(for: session)
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// }
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// }
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//
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// private var count: UInt32 = 0
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//
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// private let DATA_BLOCK_SIZE = 0xFFFF - 12
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//
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// private var requestSend = false
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//
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// private func requestData() -> Data {
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// var response: [UInt8] = [0x13]
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// response.append(UInt8(session.host.utf8.count))
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// response += [UInt8](session.host.utf8)
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// response += [UInt8](Utils.toByteArray(UInt16(session.port)).reversed())
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// var responseData = Data(bytes: UnsafePointer<UInt8>(response), count: response.count)
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// var keyiv = Data(count: key!.count + writeIV!.count)
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//
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// keyiv.replaceSubrange(0..<writeIV!.count, with: writeIV!)
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// keyiv.replaceSubrange(writeIV!.count..<writeIV!.count + key!.count, with: key!)
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// responseData.append(HMAC.final(value: responseData, algorithm: .SHA1, key: keyiv).subdata(in: 0..<10))
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// return responseData
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// }
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//
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// public override func input(data: Data) throws {
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// inputStreamProcessor!.input(data: data)
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// }
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//
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// public override func output(data: Data) {
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// let fullBlockCount = data.count / DATA_BLOCK_SIZE
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// var outputSize = fullBlockCount * (DATA_BLOCK_SIZE + 10 + 2)
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// if data.count > fullBlockCount * DATA_BLOCK_SIZE {
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// outputSize += data.count - fullBlockCount * DATA_BLOCK_SIZE + 10 + 2
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// }
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//
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// let _requestData: Data = requestData()
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// if !requestSend {
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// outputSize += _requestData.count
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// }
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//
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// var outputData = Data(count: outputSize)
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// var outputOffset = 0
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// var dataOffset = 0
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//
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// if !requestSend {
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// requestSend = true
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// outputData.replaceSubrange(0..<_requestData.count, with: _requestData)
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// outputOffset += _requestData.count
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// }
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//
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// while outputOffset != outputSize {
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// let blockLength = min(data.count - dataOffset, DATA_BLOCK_SIZE)
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// var len = UInt16(blockLength).bigEndian
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// withUnsafeBytes(of: &len) {
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// outputData.replaceSubrange(outputOffset..<outputOffset+2, with: $0)
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// }
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//
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// var kc = Data(count: writeIV!.count + MemoryLayout.size(ofValue: count))
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// kc.replaceSubrange(0..<writeIV!.count, with: writeIV!)
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// var c = count.bigEndian
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// let ms = MemoryLayout.size(ofValue: c)
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// withUnsafeBytes(of: &c) {
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// kc.replaceSubrange(writeIV!.count..<writeIV!.count+ms, with: $0)
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// }
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//
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// data.withUnsafeBytes {
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// outputData.replaceSubrange(outputOffset+2..<outputOffset+12, with: HMAC.final(value: $0.baseAddress!.advanced(by: dataOffset), length: blockLength, algorithm: .SHA1, key: kc).subdata(in: 0..<10))
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// }
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//
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// data.withUnsafeBytes {
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// outputData.replaceSubrange(outputOffset+12..<outputOffset+12+blockLength, with: $0.baseAddress!.advanced(by: dataOffset), count: blockLength)
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// }
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//
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// count += 1
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// outputOffset += 12 + blockLength
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// dataOffset += blockLength
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// }
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//
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// return outputStreamProcessor!.output(data: outputData)
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// }
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// }
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// }
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//}
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