CyberChef/src/core/operations/DNSOverHTTPS.mjs

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/**
* @author h345983745
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* @copyright Crown Copyright 2019
* @license Apache-2.0
*/
import Operation from "../Operation.mjs";
import OperationError from "../errors/OperationError.mjs";
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/**
* DNS over HTTPS operation
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*/
class DNSOverHTTPS extends Operation {
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/**
* DNSOverHTTPS constructor
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*/
constructor() {
super();
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this.name = "DNS over HTTPS";
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this.module = "Default";
this.description = [
"Takes a single domain name and performs a DNS lookup using DNS over HTTPS.",
"<br><br>",
"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.",
"<br><br>",
"Can be used with any service that supports the GET parameters <code>name</code> and <code>type</code>."
].join("\n");
this.infoURL = "https://wikipedia.org/wiki/DNS_over_HTTPS";
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this.inputType = "string";
this.outputType = "JSON";
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this.manualBake = true;
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this.args = [
{
name: "Resolver",
type: "editableOption",
value: [
{
name: "Google",
value: "https://dns.google.com/resolve"
},
{
name: "Cloudflare",
value: "https://cloudflare-dns.com/dns-query"
}
]
},
{
name: "Request Type",
type: "option",
value: [
"A",
"AAAA",
"TXT",
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"MX",
"DNSKEY",
"NS",
"PTR"
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]
},
{
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name: "Answer Data Only",
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type: "boolean",
value: false
},
{
name: "Disable DNSSEC validation",
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type: "boolean",
value: false
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}
];
}
/**
* @param {string} input
* @param {Object[]} args
* @returns {JSON}
*/
run(input, args) {
const [resolver, requestType, justAnswer, DNSSEC] = args;
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let url = URL;
try {
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 => {
return response.json();
}).then(data => {
if (justAnswer) {
return extractData(data.Answer);
}
return data;
}).catch(e => {
throw new OperationError(`Error making request to ${url}\n${e.toString()}`);
});
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}
}
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/**
* Construct an array of just data from a DNS Answer section
*
* @private
* @param {JSON} data
* @returns {JSON}
*/
function extractData(data) {
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if (typeof(data) == "undefined") {
return [];
} else {
const dataValues = [];
data.forEach(element => {
dataValues.push(element.data);
});
return dataValues;
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}
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}
export default DNSOverHTTPS;