mirror of https://github.com/gchq/CyberChef.git
56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
/**
|
|
* @author n1474335 [n1474335@gmail.com]
|
|
* @copyright Crown Copyright 2016
|
|
* @license Apache-2.0
|
|
*/
|
|
|
|
import Operation from "../Operation";
|
|
import Magic from "../lib/Magic";
|
|
|
|
/**
|
|
* Detect File Type operation
|
|
*/
|
|
class DetectFileType extends Operation {
|
|
|
|
/**
|
|
* DetectFileType constructor
|
|
*/
|
|
constructor() {
|
|
super();
|
|
|
|
this.name = "Detect File Type";
|
|
this.module = "Default";
|
|
this.description = "Attempts to guess the MIME (Multipurpose Internet Mail Extensions) type of the data based on 'magic bytes'.<br><br>Currently supports the following file types: 7z, amr, avi, bmp, bz2, class, cr2, crx, dex, dmg, doc, elf, eot, epub, exe, flac, flv, gif, gz, ico, iso, jpg, jxr, m4a, m4v, mid, mkv, mov, mp3, mp4, mpg, ogg, otf, pdf, png, ppt, ps, psd, rar, rtf, sqlite, swf, tar, tar.z, tif, ttf, utf8, vmdk, wav, webm, webp, wmv, woff, woff2, xls, xz, zip.";
|
|
this.infoURL = "https://wikipedia.org/wiki/List_of_file_signatures";
|
|
this.inputType = "ArrayBuffer";
|
|
this.outputType = "string";
|
|
this.args = [];
|
|
}
|
|
|
|
/**
|
|
* @param {ArrayBuffer} input
|
|
* @param {Object[]} args
|
|
* @returns {string}
|
|
*/
|
|
run(input, args) {
|
|
const data = new Uint8Array(input),
|
|
type = Magic.magicFileType(data);
|
|
|
|
if (!type) {
|
|
return "Unknown file type. Have you tried checking the entropy of this data to determine whether it might be encrypted or compressed?";
|
|
} else {
|
|
let output = "File extension: " + type.ext + "\n" +
|
|
"MIME type: " + type.mime;
|
|
|
|
if (type.desc && type.desc.length) {
|
|
output += "\nDescription: " + type.desc;
|
|
}
|
|
|
|
return output;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
export default DetectFileType;
|