Merge branch 'add-lz-string' of https://github.com/crespyl/CyberChef

src/core/config/Categories.json

@@ -325,7 +325,9 @@
             "Bzip2 Decompress",
             "Bzip2 Compress",
             "Tar",
-            "Untar"
+            "Untar",
+            "LZString Compress",
+            "LZString Decompress"
         ]
     },
     {

src/core/lib/LZString.mjs

@@ -0,0 +1,21 @@
+/**
+ * lz-string exports.
+ *
+ * @author crespyl [peter@crespyl.net]
+ * @copyright Peter Jacobs 2021
+ * @license Apache-2.0
+ */
+
+import LZString from "lz-string";
+
+export const COMPRESSION_OUTPUT_FORMATS = ["default", "UTF16", "Base64"];
+export const COMPRESSION_FUNCTIONS = {
+    "default": LZString.compress,
+    "UTF16":   LZString.compressToUTF16,
+    "Base64":  LZString.compressToBase64,
+};
+export const DECOMPRESSION_FUNCTIONS = {
+    "default": LZString.decompress,
+    "UTF16":   LZString.decompressFromUTF16,
+    "Base64":  LZString.decompressFromBase64,
+};

src/core/operations/LZStringCompress.mjs

@@ -0,0 +1,55 @@
+/**
+ * @author crespyl [peter@crespyl.net]
+ * @copyright Peter Jacobs 2021
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+import {COMPRESSION_OUTPUT_FORMATS, COMPRESSION_FUNCTIONS} from "../lib/LZString.mjs";
+
+/**
+ * LZString Compress operation
+ */
+class LZStringCompress extends Operation {
+
+    /**
+     * LZStringCompress constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "LZString Compress";
+        this.module = "Compression";
+        this.description = "Compress the input with lz-string.";
+        this.infoURL = "https://pieroxy.net/blog/pages/lz-string/index.html";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                name: "Compression Format",
+                type: "option",
+                defaultIndex: 0,
+                value: COMPRESSION_OUTPUT_FORMATS
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        const compress = COMPRESSION_FUNCTIONS[args[0]];
+        if (compress) {
+            return compress(input);
+        } else {
+            throw new OperationError("Unable to find compression function");
+        }
+    }
+
+}
+
+export default LZStringCompress;

src/core/operations/LZStringDecompress.mjs

@@ -0,0 +1,56 @@
+/**
+ * @author crespyl [peter@crespyl.net]
+ * @copyright Peter Jacobs 2021
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+import {COMPRESSION_OUTPUT_FORMATS, DECOMPRESSION_FUNCTIONS} from "../lib/LZString.mjs";
+
+/**
+ * LZString Decompress operation
+ */
+class LZStringDecompress extends Operation {
+
+    /**
+     * LZStringDecompress constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "LZString Decompress";
+        this.module = "Compression";
+        this.description = "Decompresses data that was compressed with lz-string.";
+        this.infoURL = "https://pieroxy.net/blog/pages/lz-string/index.html";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                name: "Compression Format",
+                type: "option",
+                defaultIndex: 0,
+                value: COMPRESSION_OUTPUT_FORMATS
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        const decompress = DECOMPRESSION_FUNCTIONS[args[0]];
+        if (decompress) {
+            return decompress(input);
+        } else {
+            throw new OperationError("Unable to find decompression function");
+        }
+    }
+
+
+}
+
+export default LZStringDecompress;