大量更新
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zeaslity
581
1-代理Xray/cloudflare-机场/yongge_cf_core.js
Normal file
581
1-代理Xray/cloudflare-机场/yongge_cf_core.js
Normal file
@@ -0,0 +1,581 @@
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/**
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*
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* @param {import("@cloudflare/workers-types").Request} request
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*/
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async function vlessOverWSHandler(request) {
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/** @type {import("@cloudflare/workers-types").WebSocket[]} */
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// @ts-ignore
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const webSocketPair = new WebSocketPair();
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const [client, webSocket] = Object.values(webSocketPair);
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webSocket.accept();
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let address = "";
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let portWithRandomLog = "";
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const log = (/** @type {string} */ info, /** @type {string | undefined} */ event) => {
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console.log(`[${address}:${portWithRandomLog}] ${info}`, event || "");
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};
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const earlyDataHeader = request.headers.get("sec-websocket-protocol") || "";
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const readableWebSocketStream = makeReadableWebSocketStream(webSocket, earlyDataHeader, log);
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/** @type {{ value: import("@cloudflare/workers-types").Socket | null}}*/
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let remoteSocketWapper = {
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value: null,
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};
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let udpStreamWrite = null;
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let isDns = false;
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// ws --> remote
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readableWebSocketStream
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.pipeTo(
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new WritableStream({
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async write(chunk, controller) {
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if (isDns && udpStreamWrite) {
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return udpStreamWrite(chunk);
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}
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if (remoteSocketWapper.value) {
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const writer = remoteSocketWapper.value.writable.getWriter();
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await writer.write(chunk);
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writer.releaseLock();
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return;
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}
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const {
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hasError,
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message,
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portRemote = 443,
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addressRemote = "",
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rawDataIndex,
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vlessVersion = new Uint8Array([0, 0]),
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isUDP,
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} = await processVlessHeader(chunk, userID);
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address = addressRemote;
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portWithRandomLog = `${portRemote}--${Math.random()} ${isUDP ? "udp " : "tcp "} `;
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if (hasError) {
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// controller.error(message);
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throw new Error(message); // cf seems has bug, controller.error will not end stream
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// webSocket.close(1000, message);
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return;
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}
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// if UDP but port not DNS port, close it
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if (isUDP) {
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if (portRemote === 53) {
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isDns = true;
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} else {
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// controller.error('UDP proxy only enable for DNS which is port 53');
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throw new Error("UDP proxy only enable for DNS which is port 53"); // cf seems has bug, controller.error will not end stream
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return;
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}
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}
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// ["version", "附加信息长度 N"]
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const vlessResponseHeader = new Uint8Array([vlessVersion[0], 0]);
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const rawClientData = chunk.slice(rawDataIndex);
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// TODO: support udp here when cf runtime has udp support
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if (isDns) {
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const { write } = await handleUDPOutBound(webSocket, vlessResponseHeader, log);
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udpStreamWrite = write;
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udpStreamWrite(rawClientData);
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return;
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}
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handleTCPOutBound(
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remoteSocketWapper,
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addressRemote,
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portRemote,
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rawClientData,
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webSocket,
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vlessResponseHeader,
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log
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);
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},
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close() {
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log(`readableWebSocketStream is close`);
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},
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abort(reason) {
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log(`readableWebSocketStream is abort`, JSON.stringify(reason));
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},
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})
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)
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.catch((err) => {
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log("readableWebSocketStream pipeTo error", err);
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});
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return new Response(null, {
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status: 101,
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// @ts-ignore
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webSocket: client,
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});
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}
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/**
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* Checks if a given UUID is present in the API response.
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* @param {string} targetUuid The UUID to search for.
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* @returns {Promise<boolean>} A Promise that resolves to true if the UUID is present in the API response, false otherwise.
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*/
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async function checkUuidInApiResponse(targetUuid) {
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// Check if any of the environment variables are empty
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try {
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const apiResponse = await getApiResponse();
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if (!apiResponse) {
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return false;
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}
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const isUuidInResponse = apiResponse.users.some((user) => user.uuid === targetUuid);
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return isUuidInResponse;
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} catch (error) {
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console.error("Error:", error);
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return false;
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}
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}
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/**
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* Handles outbound TCP connections.
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*
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* @param {any} remoteSocket
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* @param {string} addressRemote The remote address to connect to.
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* @param {number} portRemote The remote port to connect to.
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* @param {Uint8Array} rawClientData The raw client data to write.
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* @param {import("@cloudflare/workers-types").WebSocket} webSocket The WebSocket to pass the remote socket to.
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* @param {Uint8Array} vlessResponseHeader The vless response header.
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* @param {function} log The logging function.
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* @returns {Promise<void>} The remote socket.
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*/
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async function handleTCPOutBound(
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remoteSocket,
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addressRemote,
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portRemote,
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rawClientData,
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webSocket,
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vlessResponseHeader,
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log
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) {
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async function connectAndWrite(address, port) {
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if (/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(address)) address = `${atob('d3d3Lg==')}${address}${atob('LnNzbGlwLmlv')}`;
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/** @type {import("@cloudflare/workers-types").Socket} */
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const tcpSocket = connect({
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hostname: address,
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port: port,
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});
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remoteSocket.value = tcpSocket;
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log(`connected to ${address}:${port}`);
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const writer = tcpSocket.writable.getWriter();
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await writer.write(rawClientData); // first write, nomal is tls client hello
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writer.releaseLock();
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return tcpSocket;
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}
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// if the cf connect tcp socket have no incoming data, we retry to redirect ip
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async function retry() {
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const tcpSocket = await connectAndWrite(proxyIP || addressRemote, proxyPort || portRemote);
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// no matter retry success or not, close websocket
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tcpSocket.closed
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.catch((error) => {
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console.log("retry tcpSocket closed error", error);
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})
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.finally(() => {
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safeCloseWebSocket(webSocket);
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});
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remoteSocketToWS(tcpSocket, webSocket, vlessResponseHeader, null, log);
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}
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const tcpSocket = await connectAndWrite(addressRemote, portRemote);
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// when remoteSocket is ready, pass to websocket
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// remote--> ws
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remoteSocketToWS(tcpSocket, webSocket, vlessResponseHeader, retry, log);
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}
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/**
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*
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* @param {import("@cloudflare/workers-types").WebSocket} webSocketServer
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* @param {string} earlyDataHeader for ws 0rtt
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* @param {(info: string)=> void} log for ws 0rtt
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*/
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function makeReadableWebSocketStream(webSocketServer, earlyDataHeader, log) {
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let readableStreamCancel = false;
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const stream = new ReadableStream({
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start(controller) {
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webSocketServer.addEventListener("message", (event) => {
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if (readableStreamCancel) {
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return;
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}
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const message = event.data;
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controller.enqueue(message);
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});
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// The event means that the client closed the client -> server stream.
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// However, the server -> client stream is still open until you call close() on the server side.
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// The WebSocket protocol says that a separate close message must be sent in each direction to fully close the socket.
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webSocketServer.addEventListener("close", () => {
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// client send close, need close server
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// if stream is cancel, skip controller.close
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safeCloseWebSocket(webSocketServer);
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if (readableStreamCancel) {
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return;
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}
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controller.close();
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});
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webSocketServer.addEventListener("error", (err) => {
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log("webSocketServer has error");
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controller.error(err);
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});
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// for ws 0rtt
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const { earlyData, error } = base64ToArrayBuffer(earlyDataHeader);
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if (error) {
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controller.error(error);
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} else if (earlyData) {
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controller.enqueue(earlyData);
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}
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},
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pull(controller) {
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// if ws can stop read if stream is full, we can implement backpressure
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// https://streams.spec.whatwg.org/#example-rs-push-backpressure
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},
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cancel(reason) {
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// 1. pipe WritableStream has error, this cancel will called, so ws handle server close into here
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// 2. if readableStream is cancel, all controller.close/enqueue need skip,
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// 3. but from testing controller.error still work even if readableStream is cancel
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if (readableStreamCancel) {
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return;
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}
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log(`ReadableStream was canceled, due to ${reason}`);
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readableStreamCancel = true;
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safeCloseWebSocket(webSocketServer);
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},
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});
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return stream;
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}
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// https://xtls.github.io/development/protocols/vless.html
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// https://github.com/zizifn/excalidraw-backup/blob/main/v2ray-protocol.excalidraw
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/**
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*
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* @param { ArrayBuffer} vlessBuffer
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* @param {string} userID
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* @returns
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*/
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async function processVlessHeader(vlessBuffer, userID) {
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if (vlessBuffer.byteLength < 24) {
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return {
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hasError: true,
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message: "invalid data",
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};
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}
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const version = new Uint8Array(vlessBuffer.slice(0, 1));
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let isValidUser = false;
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let isUDP = false;
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const slicedBuffer = new Uint8Array(vlessBuffer.slice(1, 17));
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const slicedBufferString = stringify(slicedBuffer);
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const uuids = userID.includes(",") ? userID.split(",") : [userID];
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const checkUuidInApi = await checkUuidInApiResponse(slicedBufferString);
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isValidUser = uuids.some((userUuid) => checkUuidInApi || slicedBufferString === userUuid.trim());
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console.log(`checkUuidInApi: ${await checkUuidInApiResponse(slicedBufferString)}, userID: ${slicedBufferString}`);
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if (!isValidUser) {
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return {
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hasError: true,
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message: "invalid user",
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};
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}
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const optLength = new Uint8Array(vlessBuffer.slice(17, 18))[0];
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//skip opt for now
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const command = new Uint8Array(vlessBuffer.slice(18 + optLength, 18 + optLength + 1))[0];
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// 0x01 TCP
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// 0x02 UDP
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// 0x03 MUX
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if (command === 1) {
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} else if (command === 2) {
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isUDP = true;
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} else {
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return {
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hasError: true,
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message: `command ${command} is not support, command 01-tcp,02-udp,03-mux`,
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};
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}
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const portIndex = 18 + optLength + 1;
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const portBuffer = vlessBuffer.slice(portIndex, portIndex + 2);
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// port is big-Endian in raw data etc 80 == 0x005d
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const portRemote = new DataView(portBuffer).getUint16(0);
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let addressIndex = portIndex + 2;
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const addressBuffer = new Uint8Array(vlessBuffer.slice(addressIndex, addressIndex + 1));
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// 1--> ipv4 addressLength =4
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// 2--> domain name addressLength=addressBuffer[1]
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// 3--> ipv6 addressLength =16
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const addressType = addressBuffer[0];
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let addressLength = 0;
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let addressValueIndex = addressIndex + 1;
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let addressValue = "";
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switch (addressType) {
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case 1:
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addressLength = 4;
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addressValue = new Uint8Array(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength)).join(".");
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break;
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case 2:
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addressLength = new Uint8Array(vlessBuffer.slice(addressValueIndex, addressValueIndex + 1))[0];
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addressValueIndex += 1;
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addressValue = new TextDecoder().decode(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength));
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break;
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case 3:
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addressLength = 16;
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const dataView = new DataView(vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength));
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// 2001:0db8:85a3:0000:0000:8a2e:0370:7334
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const ipv6 = [];
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for (let i = 0; i < 8; i++) {
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ipv6.push(dataView.getUint16(i * 2).toString(16));
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}
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addressValue = ipv6.join(":");
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// seems no need add [] for ipv6
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break;
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default:
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return {
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hasError: true,
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message: `invild addressType is ${addressType}`,
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};
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}
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if (!addressValue) {
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return {
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hasError: true,
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message: `addressValue is empty, addressType is ${addressType}`,
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};
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}
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return {
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hasError: false,
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addressRemote: addressValue,
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addressType,
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portRemote,
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rawDataIndex: addressValueIndex + addressLength,
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vlessVersion: version,
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isUDP,
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};
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}
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|
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/**
|
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*
|
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* @param {import("@cloudflare/workers-types").Socket} remoteSocket
|
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* @param {import("@cloudflare/workers-types").WebSocket} webSocket
|
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* @param {ArrayBuffer} vlessResponseHeader
|
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* @param {(() => Promise<void>) | null} retry
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* @param {*} log
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*/
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async function remoteSocketToWS(remoteSocket, webSocket, vlessResponseHeader, retry, log) {
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// remote--> ws
|
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let remoteChunkCount = 0;
|
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let chunks = [];
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/** @type {ArrayBuffer | null} */
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let vlessHeader = vlessResponseHeader;
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let hasIncomingData = false; // check if remoteSocket has incoming data
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await remoteSocket.readable
|
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.pipeTo(
|
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new WritableStream({
|
||||
start() {},
|
||||
/**
|
||||
*
|
||||
* @param {Uint8Array} chunk
|
||||
* @param {*} controller
|
||||
*/
|
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async write(chunk, controller) {
|
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hasIncomingData = true;
|
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// remoteChunkCount++;
|
||||
if (webSocket.readyState !== WS_READY_STATE_OPEN) {
|
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controller.error("webSocket.readyState is not open, maybe close");
|
||||
}
|
||||
if (vlessHeader) {
|
||||
webSocket.send(await new Blob([vlessHeader, chunk]).arrayBuffer());
|
||||
vlessHeader = null;
|
||||
} else {
|
||||
// seems no need rate limit this, CF seems fix this??..
|
||||
// if (remoteChunkCount > 20000) {
|
||||
// // cf one package is 4096 byte(4kb), 4096 * 20000 = 80M
|
||||
// await delay(1);
|
||||
// }
|
||||
webSocket.send(chunk);
|
||||
}
|
||||
},
|
||||
close() {
|
||||
log(`remoteConnection!.readable is close with hasIncomingData is ${hasIncomingData}`);
|
||||
// safeCloseWebSocket(webSocket); // no need server close websocket frist for some case will casue HTTP ERR_CONTENT_LENGTH_MISMATCH issue, client will send close event anyway.
|
||||
},
|
||||
abort(reason) {
|
||||
console.error(`remoteConnection!.readable abort`, reason);
|
||||
},
|
||||
})
|
||||
)
|
||||
.catch((error) => {
|
||||
console.error(`remoteSocketToWS has exception `, error.stack || error);
|
||||
safeCloseWebSocket(webSocket);
|
||||
});
|
||||
|
||||
// seems is cf connect socket have error,
|
||||
// 1. Socket.closed will have error
|
||||
// 2. Socket.readable will be close without any data coming
|
||||
if (hasIncomingData === false && retry) {
|
||||
log(`retry`);
|
||||
retry();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param {string} base64Str
|
||||
* @returns
|
||||
*/
|
||||
function base64ToArrayBuffer(base64Str) {
|
||||
if (!base64Str) {
|
||||
return { error: null };
|
||||
}
|
||||
try {
|
||||
// go use modified Base64 for URL rfc4648 which js atob not support
|
||||
base64Str = base64Str.replace(/-/g, "+").replace(/_/g, "/");
|
||||
const decode = atob(base64Str);
|
||||
const arryBuffer = Uint8Array.from(decode, (c) => c.charCodeAt(0));
|
||||
return { earlyData: arryBuffer.buffer, error: null };
|
||||
} catch (error) {
|
||||
return { error };
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This is not real UUID validation
|
||||
* @param {string} uuid
|
||||
*/
|
||||
function isValidUUID(uuid) {
|
||||
const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
|
||||
return uuidRegex.test(uuid);
|
||||
}
|
||||
|
||||
const WS_READY_STATE_OPEN = 1;
|
||||
const WS_READY_STATE_CLOSING = 2;
|
||||
/**
|
||||
* Normally, WebSocket will not has exceptions when close.
|
||||
* @param {import("@cloudflare/workers-types").WebSocket} socket
|
||||
*/
|
||||
function safeCloseWebSocket(socket) {
|
||||
try {
|
||||
if (socket.readyState === WS_READY_STATE_OPEN || socket.readyState === WS_READY_STATE_CLOSING) {
|
||||
socket.close();
|
||||
}
|
||||
} catch (error) {
|
||||
console.error("safeCloseWebSocket error", error);
|
||||
}
|
||||
}
|
||||
|
||||
const byteToHex = [];
|
||||
for (let i = 0; i < 256; ++i) {
|
||||
byteToHex.push((i + 256).toString(16).slice(1));
|
||||
}
|
||||
function unsafeStringify(arr, offset = 0) {
|
||||
return (
|
||||
byteToHex[arr[offset + 0]] +
|
||||
byteToHex[arr[offset + 1]] +
|
||||
byteToHex[arr[offset + 2]] +
|
||||
byteToHex[arr[offset + 3]] +
|
||||
"-" +
|
||||
byteToHex[arr[offset + 4]] +
|
||||
byteToHex[arr[offset + 5]] +
|
||||
"-" +
|
||||
byteToHex[arr[offset + 6]] +
|
||||
byteToHex[arr[offset + 7]] +
|
||||
"-" +
|
||||
byteToHex[arr[offset + 8]] +
|
||||
byteToHex[arr[offset + 9]] +
|
||||
"-" +
|
||||
byteToHex[arr[offset + 10]] +
|
||||
byteToHex[arr[offset + 11]] +
|
||||
byteToHex[arr[offset + 12]] +
|
||||
byteToHex[arr[offset + 13]] +
|
||||
byteToHex[arr[offset + 14]] +
|
||||
byteToHex[arr[offset + 15]]
|
||||
).toLowerCase();
|
||||
}
|
||||
function stringify(arr, offset = 0) {
|
||||
const uuid = unsafeStringify(arr, offset);
|
||||
if (!isValidUUID(uuid)) {
|
||||
throw TypeError("Stringified UUID is invalid");
|
||||
}
|
||||
return uuid;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param {import("@cloudflare/workers-types").WebSocket} webSocket
|
||||
* @param {ArrayBuffer} vlessResponseHeader
|
||||
* @param {(string)=> void} log
|
||||
*/
|
||||
async function handleUDPOutBound(webSocket, vlessResponseHeader, log) {
|
||||
let isVlessHeaderSent = false;
|
||||
const transformStream = new TransformStream({
|
||||
start(controller) {},
|
||||
transform(chunk, controller) {
|
||||
// udp message 2 byte is the the length of udp data
|
||||
// TODO: this should have bug, beacsue maybe udp chunk can be in two websocket message
|
||||
for (let index = 0; index < chunk.byteLength; ) {
|
||||
const lengthBuffer = chunk.slice(index, index + 2);
|
||||
const udpPakcetLength = new DataView(lengthBuffer).getUint16(0);
|
||||
const udpData = new Uint8Array(chunk.slice(index + 2, index + 2 + udpPakcetLength));
|
||||
index = index + 2 + udpPakcetLength;
|
||||
controller.enqueue(udpData);
|
||||
}
|
||||
},
|
||||
flush(controller) {},
|
||||
});
|
||||
|
||||
// only handle dns udp for now
|
||||
transformStream.readable
|
||||
.pipeTo(
|
||||
new WritableStream({
|
||||
async write(chunk) {
|
||||
const resp = await fetch(
|
||||
dohURL, // dns server url
|
||||
{
|
||||
method: "POST",
|
||||
headers: {
|
||||
"content-type": "application/dns-message",
|
||||
},
|
||||
body: chunk,
|
||||
}
|
||||
);
|
||||
const dnsQueryResult = await resp.arrayBuffer();
|
||||
const udpSize = dnsQueryResult.byteLength;
|
||||
// console.log([...new Uint8Array(dnsQueryResult)].map((x) => x.toString(16)));
|
||||
const udpSizeBuffer = new Uint8Array([(udpSize >> 8) & 0xff, udpSize & 0xff]);
|
||||
if (webSocket.readyState === WS_READY_STATE_OPEN) {
|
||||
log(`doh success and dns message length is ${udpSize}`);
|
||||
if (isVlessHeaderSent) {
|
||||
webSocket.send(await new Blob([udpSizeBuffer, dnsQueryResult]).arrayBuffer());
|
||||
} else {
|
||||
webSocket.send(await new Blob([vlessResponseHeader, udpSizeBuffer, dnsQueryResult]).arrayBuffer());
|
||||
isVlessHeaderSent = true;
|
||||
}
|
||||
}
|
||||
},
|
||||
})
|
||||
)
|
||||
.catch((error) => {
|
||||
log("dns udp has error" + error);
|
||||
});
|
||||
|
||||
const writer = transformStream.writable.getWriter();
|
||||
|
||||
return {
|
||||
/**
|
||||
*
|
||||
* @param {Uint8Array} chunk
|
||||
*/
|
||||
write(chunk) {
|
||||
writer.write(chunk);
|
||||
},
|
||||
};
|
||||
}
|
||||
Reference in New Issue
Block a user