DNS Extractor
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DNS Extractor
juansgaitan/dns-extractor
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Gets the IP addresses & *Reverse DNS from an input url. *Reverse DNS is IP address to domain name mapping - the opposite of forward (normal) DNS which maps domain names to IP addresses.
Dockerfile
1# This is a template for a Dockerfile used to run acts in Actor system.
2# The base image name below is set during the act build, based on user settings.
3# IMPORTANT: The base image must set a correct working directory, such as /usr/src/app or /home/user
4FROM apify/actor-node-puppeteer
5
6# Second, copy just package.json and package-lock.json since it should be
7# the only file that affects "npm install" in the next step, to speed up the build
8COPY package*.json ./
9
10# Install NPM packages, skip optional and development dependencies to
11# keep the image small. Avoid logging too much and print the dependency
12# tree for debugging
13RUN npm --quiet set progress=false \
14 && npm install --only=prod --no-optional \
15 && echo "Installed NPM packages:" \
16 && (npm list --all || true) \
17 && echo "Node.js version:" \
18 && node --version \
19 && echo "NPM version:" \
20 && npm --version
21
22# Copy source code to container
23# Do this in the last step, to have fast build if only the source code changed
24COPY . ./
25
26# NOTE: The CMD is already defined by the base image.
27# Uncomment this for local node inspector debugging:
28# CMD [ "node", "--inspect=0.0.0.0:9229", "main.js" ]package.json
1{
2 "name": "apify-project",
3 "version": "0.0.1",
4 "description": "",
5 "author": "It's not you it's me",
6 "license": "ISC",
7 "dependencies": {
8 "apify": "latest"
9 },
10 "scripts": {
11 "start": "node main.js"
12 }
13}main.js
1const Apify = require('apify');
2const { URL } = require('url');
3const { promisify } = require('util');
4const { lookup, resolveAny, reverse } = require('dns');
5
6const { log, dir } = console;
7const [dnsLookup, dnsResolve, dnsReverse] = [
8 lookup,
9 resolveAny,
10 reverse,
11].map(promisify);
12
13Apify.main(async () => {
14 const input = await Apify.getValue('INPUT');
15 log(input);
16
17 const { url } = input;
18 if (!url) throw Error('No input URL');
19 log('Input URL:', url);
20
21 const protocol = 'http://';
22 const parsedUrl = `${/http/.test(url) ? '' : protocol}${url}`;
23
24 const { host, origin } = new URL(parsedUrl);
25 log('URL host:', host);
26 log('URL origin:', origin);
27
28 const output = { origin, host };
29
30 let shouldTryReverse = true;
31 try {
32 Object.assign(output, {
33 hostIp: await dnsLookup(host),
34 hostResolve: await dnsResolve(host),
35 });
36 } catch (error) {
37 log(error.message);
38 Object.assign(output, { error: error.message });
39 shouldTryReverse = false;
40 }
41
42 if (shouldTryReverse) {
43 try {
44 Object.assign(output, {
45 hostReverse: await dnsReverse(output.hostIp.address),
46 });
47 } catch (error) {
48 log('Error DNS Reverse', error.message);
49 }
50 }
51
52 log('Output result:');
53 dir(output);
54 await Apify.setValue('OUTPUT', output);
55});Developer
Juan Gaitán VillamizarMaintained by Community
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5 monthly users
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2 stars
0% runs succeeded
Created in Nov 2017
Modified 2 years ago
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