Linux altar53.supremepanel53.com 4.18.0-553.8.1.lve.el8.x86_64 #1 SMP Thu Jul 4 16:24:39 UTC 2024 x86_64
/ lib/ node_modules/ npm/ node_modules/ socks-proxy-agent/ |
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/** * Module dependencies. */ var tls; // lazy-loaded... var url = require('url'); var dns = require('dns'); var Agent = require('agent-base'); var SocksClient = require('socks').SocksClient; var inherits = require('util').inherits; /** * Module exports. */ module.exports = SocksProxyAgent; /** * The `SocksProxyAgent`. * * @api public */ function SocksProxyAgent(opts) { if (!(this instanceof SocksProxyAgent)) return new SocksProxyAgent(opts); if ('string' == typeof opts) opts = url.parse(opts); if (!opts) throw new Error( 'a SOCKS proxy server `host` and `port` must be specified!' ); Agent.call(this, opts); var proxy = Object.assign({}, opts); // prefer `hostname` over `host`, because of `url.parse()` proxy.host = proxy.hostname || proxy.host; // SOCKS doesn't *technically* have a default port, but this is // the same default that `curl(1)` uses proxy.port = +proxy.port || 1080; if (proxy.host && proxy.path) { // if both a `host` and `path` are specified then it's most likely the // result of a `url.parse()` call... we need to remove the `path` portion so // that `net.connect()` doesn't attempt to open that as a unix socket file. delete proxy.path; delete proxy.pathname; } // figure out if we want socks v4 or v5, based on the "protocol" used. // Defaults to 5. proxy.lookup = false; switch (proxy.protocol) { case 'socks4:': proxy.lookup = true; // pass through case 'socks4a:': proxy.version = 4; break; case 'socks5:': proxy.lookup = true; // pass through case 'socks:': // no version specified, default to 5h case 'socks5h:': proxy.version = 5; break; default: throw new TypeError( 'A "socks" protocol must be specified! Got: ' + proxy.protocol ); } if (proxy.auth) { var auth = proxy.auth.split(':'); proxy.authentication = { username: auth[0], password: auth[1] }; proxy.userid = auth[0]; } this.proxy = proxy; } inherits(SocksProxyAgent, Agent); /** * Initiates a SOCKS connection to the specified SOCKS proxy server, * which in turn connects to the specified remote host and port. * * @api public */ SocksProxyAgent.prototype.callback = function connect(req, opts, fn) { var proxy = this.proxy; // called once the SOCKS proxy has connected to the specified remote endpoint function onhostconnect(err, result) { if (err) return fn(err); var socket = result.socket; var s = socket; if (opts.secureEndpoint) { // since the proxy is connecting to an SSL server, we have // to upgrade this socket connection to an SSL connection if (!tls) tls = require('tls'); opts.socket = socket; opts.servername = opts.host; opts.host = null; opts.hostname = null; opts.port = null; s = tls.connect(opts); } fn(null, s); } // called for the `dns.lookup()` callback function onlookup(err, ip) { if (err) return fn(err); options.destination.host = ip; SocksClient.createConnection(options, onhostconnect); } var options = { proxy: { ipaddress: proxy.host, port: +proxy.port, type: proxy.version }, destination: { port: +opts.port }, command: 'connect' }; if (proxy.authentication) { options.proxy.userId = proxy.userid; options.proxy.password = proxy.authentication.password; } if (proxy.lookup) { // client-side DNS resolution for "4" and "5" socks proxy versions dns.lookup(opts.host, onlookup); } else { // proxy hostname DNS resolution for "4a" and "5h" socks proxy servers onlookup(null, opts.host); } }