Issue 991: Add CBOR Decode operation

src/core/config/Categories.json

@@ -62,7 +62,8 @@
             "CSV to JSON",
             "JSON to CSV",
             "Avro to JSON",
-            "CBOR Encode"
+            "CBOR Encode",
+            "CBOR Decode"
         ]
     },
     {

src/core/operations/CBORDecode.mjs

@@ -0,0 +1,42 @@
+/**
+ * @author Danh4 [dan.h4@ncsc.gov.uk]
+ * @copyright Crown Copyright 2020
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import Cbor from "cbor";
+
+/**
+ * CBOR Decode operation
+ */
+class CBORDecode extends Operation {
+
+    /**
+     * CBORDecode constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "CBOR Decode";
+        this.module = "Default";
+        this.description = "Decode Concise Binary Object Representation (CBOR) data format (RFC7049) to JSON.";
+        this.infoURL = "https://cbor.io";
+        this.inputType = "ArrayBuffer";
+        this.outputType = "JSON";
+        this.args = [
+        ];
+    }
+
+    /**
+     * @param {ArrayBuffer} input
+     * @param {Object[]} args
+     * @returns {JSON}
+     */
+    run(input, args) {
+        return Cbor.decodeFirstSync(Buffer.from(input).toString("hex"));
+    }
+
+}
+
+export default CBORDecode;