mirror of https://github.com/gchq/CyberChef.git
84 lines
2.0 KiB
JavaScript
84 lines
2.0 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 unzip from "zlibjs/bin/unzip.min.js";
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const Zlib = unzip.Zlib;
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/**
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* Unzip operation
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*/
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class Unzip extends Operation {
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/**
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* Unzip constructor
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*/
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constructor() {
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super();
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this.name = "Unzip";
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this.module = "Compression";
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this.description = "Decompresses data using the PKZIP algorithm and displays it per file, with support for passwords.";
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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 = "List<File>";
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this.presentType = "html";
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this.args = [
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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: "Verify result",
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type: "boolean",
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value: false
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}
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];
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this.checks = [
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{
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pattern: "^\\x50\\x4b(?:\\x03|\\x05|\\x07)(?:\\x04|\\x06|\\x08)",
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flags: "",
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args: ["", false]
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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 options = {
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password: Utils.strToByteArray(args[0]),
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verify: args[1]
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},
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unzip = new Zlib.Unzip(new Uint8Array(input), options),
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filenames = unzip.getFilenames();
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return filenames.map(fileName => {
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const bytes = unzip.decompress(fileName);
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return new File([bytes], fileName);
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});
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}
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/**
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* Displays the files in HTML for web apps.
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*
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* @param {File[]} files
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* @returns {html}
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*/
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async present(files) {
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return await Utils.displayFilesAsHTML(files);
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}
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}
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export default Unzip;
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