175 lines
No EOL
7.2 KiB
JavaScript
175 lines
No EOL
7.2 KiB
JavaScript
"use strict";
|
|
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
|
|
if (k2 === undefined) k2 = k;
|
|
var desc = Object.getOwnPropertyDescriptor(m, k);
|
|
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
|
|
desc = { enumerable: true, get: function() { return m[k]; } };
|
|
}
|
|
Object.defineProperty(o, k2, desc);
|
|
}) : (function(o, m, k, k2) {
|
|
if (k2 === undefined) k2 = k;
|
|
o[k2] = m[k];
|
|
}));
|
|
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
|
|
Object.defineProperty(o, "default", { enumerable: true, value: v });
|
|
}) : function(o, v) {
|
|
o["default"] = v;
|
|
});
|
|
var __importStar = (this && this.__importStar) || function (mod) {
|
|
if (mod && mod.__esModule) return mod;
|
|
var result = {};
|
|
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
|
|
__setModuleDefault(result, mod);
|
|
return result;
|
|
};
|
|
var __importDefault = (this && this.__importDefault) || function (mod) {
|
|
return (mod && mod.__esModule) ? mod : { "default": mod };
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.HttpsProxyAgent = void 0;
|
|
const net = __importStar(require("net"));
|
|
const tls = __importStar(require("tls"));
|
|
const assert_1 = __importDefault(require("assert"));
|
|
const debug_1 = __importDefault(require("debug"));
|
|
const agent_base_1 = require("agent-base");
|
|
const url_1 = require("url");
|
|
const parse_proxy_response_1 = require("./parse-proxy-response");
|
|
const debug = (0, debug_1.default)('https-proxy-agent');
|
|
/**
|
|
* The `HttpsProxyAgent` implements an HTTP Agent subclass that connects to
|
|
* the specified "HTTP(s) proxy server" in order to proxy HTTPS requests.
|
|
*
|
|
* Outgoing HTTP requests are first tunneled through the proxy server using the
|
|
* `CONNECT` HTTP request method to establish a connection to the proxy server,
|
|
* and then the proxy server connects to the destination target and issues the
|
|
* HTTP request from the proxy server.
|
|
*
|
|
* `https:` requests have their socket connection upgraded to TLS once
|
|
* the connection to the proxy server has been established.
|
|
*/
|
|
class HttpsProxyAgent extends agent_base_1.Agent {
|
|
constructor(proxy, opts) {
|
|
super(opts);
|
|
this.options = { path: undefined };
|
|
this.proxy = typeof proxy === 'string' ? new url_1.URL(proxy) : proxy;
|
|
this.proxyHeaders = opts?.headers ?? {};
|
|
debug('Creating new HttpsProxyAgent instance: %o', this.proxy.href);
|
|
// Trim off the brackets from IPv6 addresses
|
|
const host = (this.proxy.hostname || this.proxy.host).replace(/^\[|\]$/g, '');
|
|
const port = this.proxy.port
|
|
? parseInt(this.proxy.port, 10)
|
|
: this.proxy.protocol === 'https:'
|
|
? 443
|
|
: 80;
|
|
this.connectOpts = {
|
|
// Attempt to negotiate http/1.1 for proxy servers that support http/2
|
|
ALPNProtocols: ['http/1.1'],
|
|
...(opts ? omit(opts, 'headers') : null),
|
|
host,
|
|
port,
|
|
};
|
|
}
|
|
/**
|
|
* Called when the node-core HTTP client library is creating a
|
|
* new HTTP request.
|
|
*/
|
|
async connect(req, opts) {
|
|
const { proxy } = this;
|
|
if (!opts.host) {
|
|
throw new TypeError('No "host" provided');
|
|
}
|
|
// Create a socket connection to the proxy server.
|
|
let socket;
|
|
if (proxy.protocol === 'https:') {
|
|
debug('Creating `tls.Socket`: %o', this.connectOpts);
|
|
const servername = this.connectOpts.servername || this.connectOpts.host;
|
|
socket = tls.connect({
|
|
...this.connectOpts,
|
|
servername,
|
|
});
|
|
}
|
|
else {
|
|
debug('Creating `net.Socket`: %o', this.connectOpts);
|
|
socket = net.connect(this.connectOpts);
|
|
}
|
|
const headers = typeof this.proxyHeaders === 'function'
|
|
? this.proxyHeaders()
|
|
: { ...this.proxyHeaders };
|
|
const host = net.isIPv6(opts.host) ? `[${opts.host}]` : opts.host;
|
|
let payload = `CONNECT ${host}:${opts.port} HTTP/1.1\r\n`;
|
|
// Inject the `Proxy-Authorization` header if necessary.
|
|
if (proxy.username || proxy.password) {
|
|
const auth = `${decodeURIComponent(proxy.username)}:${decodeURIComponent(proxy.password)}`;
|
|
headers['Proxy-Authorization'] = `Basic ${Buffer.from(auth).toString('base64')}`;
|
|
}
|
|
headers.Host = `${host}:${opts.port}`;
|
|
if (!headers['Proxy-Connection']) {
|
|
headers['Proxy-Connection'] = this.keepAlive
|
|
? 'Keep-Alive'
|
|
: 'close';
|
|
}
|
|
for (const name of Object.keys(headers)) {
|
|
payload += `${name}: ${headers[name]}\r\n`;
|
|
}
|
|
const proxyResponsePromise = (0, parse_proxy_response_1.parseProxyResponse)(socket);
|
|
socket.write(`${payload}\r\n`);
|
|
const { connect, buffered } = await proxyResponsePromise;
|
|
req.emit('proxyConnect', connect);
|
|
this.emit('proxyConnect', connect, req);
|
|
if (connect.statusCode === 200) {
|
|
req.once('socket', resume);
|
|
if (opts.secureEndpoint) {
|
|
// The proxy is connecting to a TLS server, so upgrade
|
|
// this socket connection to a TLS connection.
|
|
debug('Upgrading socket connection to TLS');
|
|
const servername = opts.servername || opts.host;
|
|
return tls.connect({
|
|
...omit(opts, 'host', 'path', 'port'),
|
|
socket,
|
|
servername,
|
|
});
|
|
}
|
|
return socket;
|
|
}
|
|
// Some other status code that's not 200... need to re-play the HTTP
|
|
// header "data" events onto the socket once the HTTP machinery is
|
|
// attached so that the node core `http` can parse and handle the
|
|
// error status code.
|
|
// Close the original socket, and a new "fake" socket is returned
|
|
// instead, so that the proxy doesn't get the HTTP request
|
|
// written to it (which may contain `Authorization` headers or other
|
|
// sensitive data).
|
|
//
|
|
// See: https://hackerone.com/reports/541502
|
|
socket.destroy();
|
|
const fakeSocket = new net.Socket({ writable: false });
|
|
fakeSocket.readable = true;
|
|
// Need to wait for the "socket" event to re-play the "data" events.
|
|
req.once('socket', (s) => {
|
|
debug('Replaying proxy buffer for failed request');
|
|
(0, assert_1.default)(s.listenerCount('data') > 0);
|
|
// Replay the "buffered" Buffer onto the fake `socket`, since at
|
|
// this point the HTTP module machinery has been hooked up for
|
|
// the user.
|
|
s.push(buffered);
|
|
s.push(null);
|
|
});
|
|
return fakeSocket;
|
|
}
|
|
}
|
|
HttpsProxyAgent.protocols = ['http', 'https'];
|
|
exports.HttpsProxyAgent = HttpsProxyAgent;
|
|
function resume(socket) {
|
|
socket.resume();
|
|
}
|
|
function omit(obj, ...keys) {
|
|
const ret = {};
|
|
let key;
|
|
for (key in obj) {
|
|
if (!keys.includes(key)) {
|
|
ret[key] = obj[key];
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
//# sourceMappingURL=index.js.map
|