codekingpro/portable-devtools

1"use strict";
2var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
3    if (k2 === undefined) k2 = k;
4    var desc = Object.getOwnPropertyDescriptor(m, k);
5    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
6      desc = { enumerable: true, get: function() { return m[k]; } };
7    }
8    Object.defineProperty(o, k2, desc);
9}) : (function(o, m, k, k2) {
10    if (k2 === undefined) k2 = k;
11    o[k2] = m[k];
12}));
13var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
14    Object.defineProperty(o, "default", { enumerable: true, value: v });
15}) : function(o, v) {
16    o["default"] = v;
17});
18var __importStar = (this && this.__importStar) || function (mod) {
19    if (mod && mod.__esModule) return mod;
20    var result = {};
21    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
22    __setModuleDefault(result, mod);
23    return result;
24};
25var __importDefault = (this && this.__importDefault) || function (mod) {
26    return (mod && mod.__esModule) ? mod : { "default": mod };
27};
28Object.defineProperty(exports, "__esModule", { value: true });
29exports.HttpsProxyAgent = void 0;
30const net = __importStar(require("net"));
31const tls = __importStar(require("tls"));
32const assert_1 = __importDefault(require("assert"));
33const debug_1 = __importDefault(require("debug"));
34const agent_base_1 = require("agent-base");
35const url_1 = require("url");
36const parse_proxy_response_1 = require("./parse-proxy-response");
37const debug = (0, debug_1.default)('https-proxy-agent');
38const setServernameFromNonIpHost = (options) => {
39    if (options.servername === undefined &&
40        options.host &&
41        !net.isIP(options.host)) {
42        return {
43            ...options,
44            servername: options.host,
45        };
46    }
47    return options;
48};
49/**
50 * The `HttpsProxyAgent` implements an HTTP Agent subclass that connects to
51 * the specified "HTTP(s) proxy server" in order to proxy HTTPS requests.
52 *
53 * Outgoing HTTP requests are first tunneled through the proxy server using the
54 * `CONNECT` HTTP request method to establish a connection to the proxy server,
55 * and then the proxy server connects to the destination target and issues the
56 * HTTP request from the proxy server.
57 *
58 * `https:` requests have their socket connection upgraded to TLS once
59 * the connection to the proxy server has been established.
60 */
61class HttpsProxyAgent extends agent_base_1.Agent {
62    constructor(proxy, opts) {
63        super(opts);
64        this.options = { path: undefined };
65        this.proxy = typeof proxy === 'string' ? new url_1.URL(proxy) : proxy;
66        this.proxyHeaders = opts?.headers ?? {};
67        debug('Creating new HttpsProxyAgent instance: %o', this.proxy.href);
68        // Trim off the brackets from IPv6 addresses
69        const host = (this.proxy.hostname || this.proxy.host).replace(/^\[|\]$/g, '');
70        const port = this.proxy.port
71            ? parseInt(this.proxy.port, 10)
72            : this.proxy.protocol === 'https:'
73                ? 443
74                : 80;
75        this.connectOpts = {
76            // Attempt to negotiate http/1.1 for proxy servers that support http/2
77            ALPNProtocols: ['http/1.1'],
78            ...(opts ? omit(opts, 'headers') : null),
79            host,
80            port,
81        };
82    }
83    /**
84     * Called when the node-core HTTP client library is creating a
85     * new HTTP request.
86     */
87    async connect(req, opts) {
88        const { proxy } = this;
89        if (!opts.host) {
90            throw new TypeError('No "host" provided');
91        }
92        // Create a socket connection to the proxy server.
93        let socket;
94        if (proxy.protocol === 'https:') {
95            debug('Creating `tls.Socket`: %o', this.connectOpts);
96            socket = tls.connect(setServernameFromNonIpHost(this.connectOpts));
97        }
98        else {
99            debug('Creating `net.Socket`: %o', this.connectOpts);
100            socket = net.connect(this.connectOpts);
101        }
102        const headers = typeof this.proxyHeaders === 'function'
103            ? this.proxyHeaders()
104            : { ...this.proxyHeaders };
105        const host = net.isIPv6(opts.host) ? `[${opts.host}]` : opts.host;
106        let payload = `CONNECT ${host}:${opts.port} HTTP/1.1\r\n`;
107        // Inject the `Proxy-Authorization` header if necessary.
108        if (proxy.username || proxy.password) {
109            const auth = `${decodeURIComponent(proxy.username)}:${decodeURIComponent(proxy.password)}`;
110            headers['Proxy-Authorization'] = `Basic ${Buffer.from(auth).toString('base64')}`;
111        }
112        headers.Host = `${host}:${opts.port}`;
113        if (!headers['Proxy-Connection']) {
114            headers['Proxy-Connection'] = this.keepAlive
115                ? 'Keep-Alive'
116                : 'close';
117        }
118        for (const name of Object.keys(headers)) {
119            payload += `${name}: ${headers[name]}\r\n`;
120        }
121        const proxyResponsePromise = (0, parse_proxy_response_1.parseProxyResponse)(socket);
122        socket.write(`${payload}\r\n`);
123        const { connect, buffered } = await proxyResponsePromise;
124        req.emit('proxyConnect', connect);
125        this.emit('proxyConnect', connect, req);
126        if (connect.statusCode === 200) {
127            req.once('socket', resume);
128            if (opts.secureEndpoint) {
129                // The proxy is connecting to a TLS server, so upgrade
130                // this socket connection to a TLS connection.
131                debug('Upgrading socket connection to TLS');
132                return tls.connect({
133                    ...omit(setServernameFromNonIpHost(opts), 'host', 'path', 'port'),
134                    socket,
135                });
136            }
137            return socket;
138        }
139        // Some other status code that's not 200... need to re-play the HTTP
140        // header "data" events onto the socket once the HTTP machinery is
141        // attached so that the node core `http` can parse and handle the
142        // error status code.
143        // Close the original socket, and a new "fake" socket is returned
144        // instead, so that the proxy doesn't get the HTTP request
145        // written to it (which may contain `Authorization` headers or other
146        // sensitive data).
147        //
148        // See: https://hackerone.com/reports/541502
149        socket.destroy();
150        const fakeSocket = new net.Socket({ writable: false });
151        fakeSocket.readable = true;
152        // Need to wait for the "socket" event to re-play the "data" events.
153        req.once('socket', (s) => {
154            debug('Replaying proxy buffer for failed request');
155            (0, assert_1.default)(s.listenerCount('data') > 0);
156            // Replay the "buffered" Buffer onto the fake `socket`, since at
157            // this point the HTTP module machinery has been hooked up for
158            // the user.
159            s.push(buffered);
160            s.push(null);
161        });
162        return fakeSocket;
163    }
164}
165HttpsProxyAgent.protocols = ['http', 'https'];
166exports.HttpsProxyAgent = HttpsProxyAgent;
167function resume(socket) {
168    socket.resume();
169}
170function omit(obj, ...keys) {
171    const ret = {};
172    let key;
173    for (key in obj) {
174        if (!keys.includes(key)) {
175            ret[key] = obj[key];
176        }
177    }
178    return ret;
179}
180//# sourceMappingURL=index.js.map