Added metadata extraction for UUID strings.

src/core/operations/AnalyseUUID.mjs

@@ -1,5 +1,5 @@
 /**
- * @author n1474335 [n1474335@gmail.com]
+ * @author ko80240 [csk.dev@proton.me]
  * @copyright Crown Copyright 2023
  * @license Apache-2.0
  */
@@ -8,6 +8,7 @@ import * as uuid from "uuid";
 
 import Operation from "../Operation.mjs";
 import OperationError from "../errors/OperationError.mjs";
+import { toHex } from "../lib/Hex.mjs";
 
 /**
  * Analyse UUID operation
@@ -22,27 +23,128 @@ class AnalyseUUID extends Operation {
 
         this.name = "Analyse UUID";
         this.module = "Crypto";
-        this.description = "Tries to determine information about a given UUID and suggests which version may have been used to generate it";
+        this.description = "Operation for extracting metadata and detecting the version of a given UUID.";
         this.infoURL = "https://wikipedia.org/wiki/Universally_unique_identifier";
         this.inputType = "string";
         this.outputType = "string";
-        this.args = [];
+        this.args = [
+            {
+                name: "Include Metadata",
+                type: "boolean",
+                value: true
+            }
+        ];
     }
 
     /**
-     * @param {string} input
+     * @param {string} input - Expects a valid UUID string
      * @param {Object[]} args
      * @returns {string}
      */
     run(input, args) {
+        input = input.trim();
+
+        let uuidVersion, uuidBytes;
         try {
-            const uuidVersion = uuid.version(input);
-            return "UUID version: " + uuidVersion;
+            uuidVersion = uuid.version(input); // Re-using the uuid library to extract version
+            uuidBytes = uuid.parse(input);     // Re-using the uuid library to parse bytes
         } catch (error) {
             throw new OperationError("Invalid UUID");
         }
-    }
 
+        const [includeMetadata] = args;
+        const dv = new DataView(uuidBytes.buffer, uuidBytes.byteOffset, uuidBytes.byteLength); // Dataview helps handle the multi-byte ints
+        const uuidInteger = (dv.getBigUint64(0) << 64n) | dv.getBigUint64(8);
+
+        const sections = [`Version:\n${uuidVersion}`];
+
+        if (includeMetadata) {
+            const parser = UUID_PARSERS[uuidVersion];
+            const decoded = parser?.(uuidBytes, dv);
+            sections.push(formatDecoded(decoded));
+        }
+
+        sections.push(`UUID Integer:\n${uuidInteger}`);
+
+        return sections.filter(Boolean).join("\n\n");
+    }
 }
 
 export default AnalyseUUID;
+
+/**
+ * Metadata can be extracted for versions 1, 6, and 7.
+ * Enum-like frozen mapping of UUID version to parser function.
+ */
+const UUID_PARSERS = Object.freeze({
+    1: parsev1v6,
+    6: parsev1v6,
+    7: parsev7,
+});
+
+/**
+ * Versions 1 and 6. Note 6 is a re-order of 1.
+ * Version 1 == layout: timeLow(32) | timeMid(16) | timeHi(12)
+ * Version 6 == layout: timeHi(32)  | timeMid(16) | timeLow(12)
+ */
+function parsev1v6(uuidBytes, dv) {
+    const isV1 = (uuidBytes[6] >> 4) === 1;
+
+    const timeStamp =
+        isV1 ? (
+            (BigInt(dv.getUint16(6) & 0x0fff) << 48n) | // mask off version bits
+            (BigInt(dv.getUint16(4)) << 32n) |
+            BigInt(dv.getUint32(0))
+        ) : (
+            (BigInt(dv.getUint32(0)) << 28n) |
+            (BigInt(dv.getUint16(4)) << 12n) |
+            (BigInt(dv.getUint16(6) & 0x0fff))
+        );
+
+    // Convert to Unix time
+    const milliseconds =
+        Number(
+            (timeStamp - 122192928000000000n) / 10000n
+        );
+
+    return {
+        timestamp: milliseconds,
+        isoTimestamp: new Date(milliseconds).toISOString(),
+        clock: ((uuidBytes[8] & 0x3f) << 8) | uuidBytes[9],
+        node: toHex(uuidBytes.slice(10), ":").toUpperCase()
+    };
+}
+
+/** Version 7 */
+function parsev7(uuidBytes, dv) {
+    const milliseconds = Number((BigInt(dv.getUint32(0)) << 16n) | BigInt(dv.getUint16(4)));
+
+    return {
+        timestamp: milliseconds,
+        isoTimestamp: new Date(milliseconds).toISOString(),
+        randA: ((uuidBytes[6] & 0x0f) << 8) | uuidBytes[7],
+        randB: toHex(uuidBytes.slice(8), "").toUpperCase()
+    };
+}
+
+/**
+ * Formats metadata
+ *
+ * @param {Object|undefined} decoded
+ * @returns {string}
+ */
+function formatDecoded(decoded) {
+    if (!decoded) return "No metadata available. Only versions 1, 6, 7 are supported.";
+
+    return Object.entries({
+        "Timestamp": decoded.timestamp,
+        "Timestamp (ISO)": decoded.isoTimestamp,
+        "Node": decoded.node,
+        "Clock": decoded.clock,
+        "Rand A": decoded.randA,
+        "Rand B": decoded.randB
+    })
+        .filter(([, value]) => value !== undefined)
+        .map(([label, value]) => `${label}:\n${value}`)
+        .join("\n\n");
+}

tests/node/tests/operations.mjs

@@ -589,16 +589,15 @@ Password: 282760`;
     ...[1, 3, 4, 5, 6, 7].map(version => it(`Analyze UUID v${version}`, () => {
         const uuid = chef.generateUUID("", { "version": `v${version}` }).toString();
         const result = chef.analyseUUID(uuid).toString();
-        const expected = `UUID version: ${version}`;
-        assert.strictEqual(result, expected);
+        assert.ok(result.startsWith(`Version:\n${version}\n`), `Expected output to start with "Version:\\n${version}\\n", got: ${result}`);
     })),
 
     it("Generate UUID using defaults", () => {
         const uuid = chef.generateUUID();
         assert.ok(uuid);
 
         const analysis = chef.analyseUUID(uuid).toString();
-        assert.strictEqual(analysis, "UUID version: 4");
+        assert.ok(analysis.startsWith("Version:\n4\n"), `Expected output to start with "Version:\\n4\\n", got: ${analysis}`);
     }),
 
     it("Gzip, Gunzip", () => {

tests/operations/index.mjs

@@ -16,6 +16,7 @@ import { setLongTestFailure, logTestReport } from "../lib/utils.mjs";
 import TestRegister from "../lib/TestRegister.mjs";
 import "./tests/A1Z26CipherDecode.mjs";
 import "./tests/AESKeyWrap.mjs";
+import "./tests/AnalyseUUID.mjs";
 import "./tests/AlternatingCaps.mjs";
 import "./tests/AvroToJSON.mjs";
 import "./tests/BaconCipher.mjs";

tests/operations/tests/AnalyseUUID.mjs

@@ -0,0 +1,66 @@
+/**
+ * Analyse UUID tests
+ *
+ * @author ko80240 [csk.dev@proton.me]
+ * @copyright Crown Copyright 2023
+ * @license Apache-2.0
+ */
+import TestRegister from "../../lib/TestRegister.mjs";
+
+TestRegister.addTests([
+    {
+        "name": "Analyse UUID: v1 UUID extracts timestamp, clock, and node",
+        "input": "cefa1760-28ee-11f1-9f95-1fb76af3e239",
+        "expectedOutput": "Version:\n1\n\nTimestamp:\n1774514156502\n\nTimestamp (ISO):\n2026-03-26T08:35:56.502Z\n\nNode:\n1F:B7:6A:F3:E2:39\n\nClock:\n8085\n\nUUID Integer:\n275119515460318071558429785403790975545",
+        "recipeConfig": [
+            {
+                "op": "Analyse UUID",
+                "args": [true]
+            }
+        ]
+    },
+    {
+        "name": "Analyse UUID: v7 UUID extracts timestamp, randA, and randB",
+        "input": "019d294a-af64-7728-9524-26da08f50708",
+        "expectedOutput": "Version:\n7\n\nTimestamp:\n1774514253668\n\nTimestamp (ISO):\n2026-03-26T08:37:33.668Z\n\nRand A:\n1832\n\nRand B:\n952426DA08F50708\n\nUUID Integer:\n2145256098533991595556290452700595976",
+        "recipeConfig": [
+            {
+                "op": "Analyse UUID",
+                "args": [true]
+            }
+        ]
+    },
+    {
+        "name": "Analyse UUID: v4 UUID should show no metadata - not possible",
+        "input": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
+        "expectedOutput": "Version:\n4\n\nNo metadata available. Only versions 1, 6, 7 are supported.\n\nUUID Integer:\n324969006592305634633390616021200786553",
+        "recipeConfig": [
+            {
+                "op": "Analyse UUID",
+                "args": [true]
+            }
+        ]
+    },
+    {
+        "name": "Analyse UUID: if the 'Include Metadata' option is false it should return not metadata",
+        "input": "cefa1760-28ee-11f1-9f95-1fb76af3e239",
+        "expectedOutput": "Version:\n1\n\nUUID Integer:\n275119515460318071558429785403790975545",
+        "recipeConfig": [
+            {
+                "op": "Analyse UUID",
+                "args": [false]
+            }
+        ]
+    },
+    {
+        "name": "Analyse UUID: invalid UUID should return error message",
+        "input": "not-a-uuid",
+        "expectedOutput": "Invalid UUID",
+        "recipeConfig": [
+            {
+                "op": "Analyse UUID",
+                "args": [true]
+            }
+        ]
+    }
+]);