Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

Scripts/node_modules/basic-ftp/dist/netUtils.js

@@ -0,0 +1,67 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ipIsPrivateV4Address = exports.upgradeSocket = exports.describeAddress = exports.describeTLS = void 0;
+const tls_1 = require("tls");
+/**
+ * Returns a string describing the encryption on a given socket instance.
+ */
+function describeTLS(socket) {
+    if (socket instanceof tls_1.TLSSocket) {
+        const protocol = socket.getProtocol();
+        return protocol ? protocol : "Server socket or disconnected client socket";
+    }
+    return "No encryption";
+}
+exports.describeTLS = describeTLS;
+/**
+ * Returns a string describing the remote address of a socket.
+ */
+function describeAddress(socket) {
+    if (socket.remoteFamily === "IPv6") {
+        return `[${socket.remoteAddress}]:${socket.remotePort}`;
+    }
+    return `${socket.remoteAddress}:${socket.remotePort}`;
+}
+exports.describeAddress = describeAddress;
+/**
+ * Upgrade a socket connection with TLS.
+ */
+function upgradeSocket(socket, options) {
+    return new Promise((resolve, reject) => {
+        const tlsOptions = Object.assign({}, options, {
+            socket
+        });
+        const tlsSocket = (0, tls_1.connect)(tlsOptions, () => {
+            const expectCertificate = tlsOptions.rejectUnauthorized !== false;
+            if (expectCertificate && !tlsSocket.authorized) {
+                reject(tlsSocket.authorizationError);
+            }
+            else {
+                // Remove error listener added below.
+                tlsSocket.removeAllListeners("error");
+                resolve(tlsSocket);
+            }
+        }).once("error", error => {
+            reject(error);
+        });
+    });
+}
+exports.upgradeSocket = upgradeSocket;
+/**
+ * Returns true if an IP is a private address according to https://tools.ietf.org/html/rfc1918#section-3.
+ * This will handle IPv4-mapped IPv6 addresses correctly but return false for all other IPv6 addresses.
+ *
+ * @param ip  The IP as a string, e.g. "192.168.0.1"
+ */
+function ipIsPrivateV4Address(ip = "") {
+    // Handle IPv4-mapped IPv6 addresses like ::ffff:192.168.0.1
+    if (ip.startsWith("::ffff:")) {
+        ip = ip.substr(7); // Strip ::ffff: prefix
+    }
+    const octets = ip.split(".").map(o => parseInt(o, 10));
+    return octets[0] === 10 // 10.0.0.0 - 10.255.255.255
+        || (octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31) // 172.16.0.0 - 172.31.255.255
+        || (octets[0] === 192 && octets[1] === 168) // 192.168.0.0 - 192.168.255.255
+        || ip === "127.0.0.1";
+}
+exports.ipIsPrivateV4Address = ipIsPrivateV4Address;