1 files changed, 145 insertions, 0 deletions
diff --git a/deps/npm/node_modules/socks-proxy-agent/index.js b/deps/npm/node_modules/socks-proxy-agent/index.js
new file mode 100644
index 0000000000..5c0f13ae17
--- /dev/null
+++ b/deps/npm/node_modules/socks-proxy-agent/index.js
@@ -0,0 +1,145 @@
+/**
+ * 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.authentication = proxy.authentication;
+    options.proxy.userid = proxy.userid;
+  }
+
+  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);
+  }
+}