README.md

PHP DNS Server

This is an Authoritative DNS Server written in pure PHP. It will listen to DNS request on the default port (Default: port 53) and give answers about any domain that it has DNS records for. This class can be used to give DNS responses dynamically based on your pre-existing PHP code.

Supported Record Types

• A
• NS
• CNAME
• SOA
• PTR
• MX
• TXT
• AAAA
• OPT
• AXFR
• ANY

PHP Requirements

• PHP 5.6+
• Needs either sockets or socket_create PHP extension loaded (which they are by default)

Example:

Here is an example of some DNS records

<?php

require "vendor/autoload.php";

// JSON formatted DNS records file
$record_file = 'dns_record.json';
$jsonResolver = new yswery\DNS\JsonResolver($record_file);

// Recursive resolver acting as a fallback to the JsonResolver
$recursiveResolver = new yswery\DNS\RecursiveResolver($options);

$stackableResolver = new yswery\DNS\StackableResolver(array($jsonResolver, $recursiveResolver));

// Creating a new instance of our class
$dns = new yswery\DNS\Server($stackableResolver);

// Starting our DNS server
$dns->start();

And here is us querying it and seeing the response

$ dig @127.0.0.1 test.com A +short
111.111.111.111

$ dig @127.0.0.1 test.com TXT +short
"Some text."

$ dig @127.0.0.1 test2.com A +short
111.111.111.111
112.112.112.112

Running Tests

Unit tests using PHPUnit are provided. A simple script is located in the root.

• run composer install --dev to install PHPUnit and dependencies
• run ./phpunit from the root to run the tests

License

The MIT License (MIT)

Copyright (c) 2016-2017 Yif Swery

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.