mirror of https://github.com/gchq/CyberChef.git
104 lines
2.8 KiB
JavaScript
104 lines
2.8 KiB
JavaScript
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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import Operation from "../Operation.mjs";
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import Utils from "../Utils.mjs";
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import {COMPRESSION_TYPE, ZLIB_COMPRESSION_TYPE_LOOKUP} from "../lib/Zlib.mjs";
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import zip from "zlibjs/bin/zip.min.js";
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const Zlib = zip.Zlib;
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const ZIP_COMPRESSION_METHOD_LOOKUP = {
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"Deflate": Zlib.Zip.CompressionMethod.DEFLATE,
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"None (Store)": Zlib.Zip.CompressionMethod.STORE
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};
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const ZIP_OS_LOOKUP = {
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"MSDOS": Zlib.Zip.OperatingSystem.MSDOS,
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"Unix": Zlib.Zip.OperatingSystem.UNIX,
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"Macintosh": Zlib.Zip.OperatingSystem.MACINTOSH
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};
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/**
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* Zip operation
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*/
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class Zip extends Operation {
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/**
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* Zip constructor
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*/
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constructor() {
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super();
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this.name = "Zip";
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this.module = "Compression";
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this.description = "Compresses data using the PKZIP algorithm with the given filename.<br><br>No support for multiple files at this time.";
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this.infoURL = "https://wikipedia.org/wiki/Zip_(file_format)";
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this.inputType = "ArrayBuffer";
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this.outputType = "File";
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this.args = [
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{
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name: "Filename",
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type: "string",
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value: "file.txt"
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},
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{
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name: "Comment",
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type: "string",
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value: ""
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},
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{
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name: "Password",
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type: "binaryString",
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value: ""
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},
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{
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name: "Compression method",
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type: "option",
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value: ["Deflate", "None (Store)"]
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},
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{
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name: "Operating system",
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type: "option",
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value: ["MSDOS", "Unix", "Macintosh"]
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},
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{
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name: "Compression type",
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type: "option",
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value: COMPRESSION_TYPE
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}
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];
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}
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/**
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* @param {ArrayBuffer} input
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* @param {Object[]} args
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* @returns {File}
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*/
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run(input, args) {
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const filename = args[0],
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password = Utils.strToByteArray(args[2]),
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options = {
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filename: Utils.strToByteArray(filename),
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comment: Utils.strToByteArray(args[1]),
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compressionMethod: ZIP_COMPRESSION_METHOD_LOOKUP[args[3]],
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os: ZIP_OS_LOOKUP[args[4]],
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deflateOption: {
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compressionType: ZLIB_COMPRESSION_TYPE_LOOKUP[args[5]]
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},
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},
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zip = new Zlib.Zip();
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if (password.length)
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zip.setPassword(password);
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zip.addFile(new Uint8Array(input), options);
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return new File([zip.compress()], filename);
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}
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}
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export default Zip;
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