mirror of https://github.com/gchq/CyberChef.git
84 lines
2.5 KiB
JavaScript
84 lines
2.5 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 {toHex} from "../lib/Hex.mjs";
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/**
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* To Hex Content operation
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*/
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class ToHexContent extends Operation {
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/**
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* ToHexContent constructor
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*/
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constructor() {
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super();
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this.name = "To Hex Content";
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this.module = "Default";
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this.description = "Converts special characters in a string to hexadecimal. This format is used by SNORT for representing hex within ASCII text.<br><br>e.g. <code>foo=bar</code> becomes <code>foo|3d|bar</code>.";
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this.infoURL = "http://manual-snort-org.s3-website-us-east-1.amazonaws.com/node32.html#SECTION00451000000000000000";
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this.inputType = "ArrayBuffer";
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this.outputType = "string";
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this.args = [
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{
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"name": "Convert",
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"type": "option",
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"value": ["Only special chars", "Only special chars including spaces", "All chars"]
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},
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{
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"name": "Print spaces between bytes",
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"type": "boolean",
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"value": 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 {string}
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*/
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run(input, args) {
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input = new Uint8Array(input);
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const convert = args[0];
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const spaces = args[1];
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if (convert === "All chars") {
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let result = "|" + toHex(input) + "|";
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if (!spaces) result = result.replace(/ /g, "");
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return result;
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}
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let output = "",
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inHex = false,
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b;
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const convertSpaces = convert === "Only special chars including spaces";
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for (let i = 0; i < input.length; i++) {
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b = input[i];
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if ((b === 32 && convertSpaces) || (b < 48 && b !== 32) || (b > 57 && b < 65) || (b > 90 && b < 97) || b > 122) {
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if (!inHex) {
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output += "|";
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inHex = true;
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} else if (spaces) output += " ";
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output += toHex([b]);
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} else {
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if (inHex) {
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output += "|";
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inHex = false;
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}
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output += Utils.chr(input[i]);
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}
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}
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if (inHex) output += "|";
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return output;
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}
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}
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export default ToHexContent;
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