mirror of https://github.com/gchq/CyberChef.git
126 lines
3.5 KiB
JavaScript
126 lines
3.5 KiB
JavaScript
/**
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* @author h345983745
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* @copyright Crown Copyright 2019
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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 OperationError from "../errors/OperationError.mjs";
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/**
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* DNS over HTTPS operation
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*/
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class DNSOverHTTPS extends Operation {
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/**
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* DNSOverHTTPS constructor
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*/
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constructor() {
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super();
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this.name = "DNS over HTTPS";
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this.module = "Default";
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this.description = [
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"Takes a single domain name and performs a DNS lookup using DNS over HTTPS.",
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"<br><br>",
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"By default, <a href='https://developers.cloudflare.com/1.1.1.1/dns-over-https/'>Cloudflare</a> and <a href='https://developers.google.com/speed/public-dns/docs/dns-over-https'>Google</a> DNS over HTTPS services are supported.",
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"<br><br>",
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"Can be used with any service that supports the GET parameters <code>name</code> and <code>type</code>."
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].join("\n");
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this.infoURL = "https://wikipedia.org/wiki/DNS_over_HTTPS";
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this.inputType = "string";
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this.outputType = "JSON";
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this.manualBake = true;
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this.args = [
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{
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name: "Resolver",
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type: "editableOption",
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value: [
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{
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name: "Google",
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value: "https://dns.google.com/resolve"
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},
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{
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name: "Cloudflare",
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value: "https://cloudflare-dns.com/dns-query"
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}
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]
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},
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{
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name: "Request Type",
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type: "option",
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value: [
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"A",
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"AAAA",
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"TXT",
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"MX",
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"DNSKEY",
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"NS"
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]
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},
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{
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name: "Answer Data Only",
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type: "boolean",
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value: false
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},
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{
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name: "Disable DNSSEC validation",
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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 {string} input
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* @param {Object[]} args
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* @returns {JSON}
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*/
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run(input, args) {
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const [resolver, requestType, justAnswer, DNSSEC] = args;
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let url = URL;
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try {
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url = new URL(resolver);
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} catch (error) {
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throw new OperationError(error.toString() +
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"\n\nThis error could be caused by one of the following:\n" +
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" - An invalid Resolver URL\n");
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}
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const params = {name: input, type: requestType, cd: DNSSEC};
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url.search = new URLSearchParams(params);
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return fetch(url, {headers: {"accept": "application/dns-json"}}).then(response => {
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return response.json();
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}).then(data => {
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if (justAnswer) {
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return extractData(data.Answer);
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}
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return data;
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}).catch(e => {
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throw new OperationError(`Error making request to ${url}\n${e.toString()}`);
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});
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}
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}
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/**
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* Construct an array of just data from a DNS Answer section
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*
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* @private
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* @param {JSON} data
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* @returns {JSON}
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*/
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function extractData(data) {
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if (typeof(data) == "undefined") {
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return [];
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} else {
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const dataValues = [];
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data.forEach(element => {
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dataValues.push(element.data);
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});
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return dataValues;
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}
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}
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export default DNSOverHTTPS;
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