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

package-lock.json

@@ -23561,6 +23561,11 @@
         "yallist": "^4.0.0"
       }
     },
+    "lz-string": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/lz-string/-/lz-string-1.4.4.tgz",
+      "integrity": "sha1-wNjq82BZ9wV5bh40SBHPTEmNOiY="
+    },
     "make-dir": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",

package.json

@@ -133,6 +133,7 @@
     "lodash": "^4.17.21",
     "loglevel": "^1.8.0",
     "loglevel-message-prefix": "^3.0.0",
+    "lz-string": "^1.4.4",
     "markdown-it": "^13.0.1",
     "moment": "^2.29.3",
     "moment-timezone": "^0.5.34",

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;

tests/operations/index.mjs

@@ -118,6 +118,7 @@ import "./tests/ELFInfo.mjs";
 import "./tests/Subsection.mjs";
 import "./tests/CaesarBoxCipher.mjs";
 import "./tests/LS47.mjs";
+import "./tests/LZString.mjs";
 
 
 // Cannot test operations that use the File type yet

tests/operations/tests/LZString.mjs

@@ -0,0 +1,33 @@
+/**
+ * LZString tests.
+ *
+ * @author crespyl [peter@crespyl.net]
+ * @copyright Peter Jacobs 2021
+ * @license Apache-2.0
+ */
+import TestRegister from "../../lib/TestRegister.mjs";
+
+TestRegister.addTests([
+    {
+        name: "LZString Compress To Base64",
+        input: "hello world",
+        expectedOutput: "BYUwNmD2AEDukCcwBMg=",
+        recipeConfig: [
+            {
+                "op": "LZString Compress",
+                "args": ["Base64"]
+            }
+        ],
+    },
+    {
+        name: "LZString Decompress From Base64",
+        input: "BYUwNmD2AEDukCcwBMg=",
+        expectedOutput: "hello world",
+        recipeConfig: [
+            {
+                "op": "LZString Decompress",
+                "args": ["Base64"]
+            }
+        ],
+    }
+]);