DNS

by Badcow

Badcow / DNS

The aim of this project is to create abstract object representations of DNS records in PHP. The proj...

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Badcow DNS Library

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The aim of this project is to create abstract object representations of DNS records in PHP. The project consists of various classes representing DNS objects (such as

Zone
,
ResourceRecord
, and various
RData
types), a parser to convert BIND style text files to the PHP objects, and builders to create aesthetically pleasing BIND records.

The library can parse and encode DNS messages enabling developers to create DNS client/server platforms in pure PHP.

Build Status

Build Status Code Coverage Scrutinizer Code Quality

Contents

  1. Example usage
  2. Example Output
  3. Supported Types
  4. Parsing BIND Records

Example usage

require_once '/path/to/vendor/autoload.php';

use Badcow\DNS\Classes; use Badcow\DNS\Zone; use Badcow\DNS\Rdata\Factory; use Badcow\DNS\ResourceRecord; use Badcow\DNS\AlignedBuilder;

$zone = new Zone('example.com.'); $zone->setDefaultTtl(3600);

$soa = new ResourceRecord; $soa->setName('@'); $soa->setClass(Classes::INTERNET); $soa->setRdata(Factory::Soa( 'example.com.', 'post.example.com.', '2014110501', 3600, 14400, 604800, 3600 ));

$ns1 = new ResourceRecord; $ns1->setName('@'); $ns1->setClass(Classes::INTERNET); $ns1->setRdata(Factory::Ns('ns1.nameserver.com.'));

$ns2 = new ResourceRecord; $ns2->setName('@'); $ns2->setClass(Classes::INTERNET); $ns2->setRdata(Factory::Ns('ns2.nameserver.com.'));

$a = new ResourceRecord; $a->setName('sub.domain'); $a->setRdata(Factory::A('192.168.1.42')); $a->setComment('This is a local ip.');

$a6 = new ResourceRecord; $a6->setName('ipv6.domain'); $a6->setRdata(Factory::Aaaa('::1')); $a6->setComment('This is an IPv6 domain.');

$mx1 = new ResourceRecord; $mx1->setName('@'); $mx1->setRdata(Factory::Mx(10, 'mail-gw1.example.net.'));

$mx2 = new ResourceRecord; $mx2->setName('@'); $mx2->setRdata(Factory::Mx(20, 'mail-gw2.example.net.'));

$mx3 = new ResourceRecord; $mx3->setName('@'); $mx3->setRdata(Factory::Mx(30, 'mail-gw3.example.net.'));

$zone->addResourceRecord($soa); $zone->addResourceRecord($mx2); $zone->addResourceRecord($ns1); $zone->addResourceRecord($mx3); $zone->addResourceRecord($a); $zone->addResourceRecord($a6); $zone->addResourceRecord($ns2); $zone->addResourceRecord($mx1);

echo AlignedBuilder::build($zone);

Output

$ORIGIN example.com.
$TTL 3600
@            IN SOA  (
                     example.com.      ; MNAME
                     post.example.com. ; RNAME
                     2014110501        ; SERIAL
                     3600              ; REFRESH
                     14400             ; RETRY
                     604800            ; EXPIRE
                     3600              ; MINIMUM
                     )

; NS RECORDS @ IN NS ns1.nameserver.com. @ IN NS ns2.nameserver.com.

; A RECORDS sub.domain A 192.168.1.42; This is a local ip.

; AAAA RECORDS ipv6.domain AAAA ::1; This is an IPv6 domain.

; MX RECORDS @ MX 10 mail-gw1.example.net. @ MX 20 mail-gw2.example.net. @ MX 30 mail-gw3.example.net.

The above is an example of the

AlignedBuilder
which creates records that are much more aesthetically pleasing. You can also use the flat
ZoneBuilder
, the output of which is below:
...
echo ZoneBuilder::build($zone);
$ORIGIN example.com.
$TTL 3600
@ IN SOA example.com. post.example.com. 2014110501 3600 14400 604800 3600
@ MX 20 mail-gw2.example.net.
@ IN NS ns1.nameserver.com.
@ MX 30 mail-gw3.example.net.
sub.domain A 192.168.1.42; This is a local ip.
ipv6.domain AAAA ::1; This is an IPv6 domain.
@ IN NS ns2.nameserver.com.
@ MX 10 mail-gw1.example.net.

Supported Types

All ubiquitous DNS types are supported. For full details on supported types see the Documentation.

Parsing BIND Records

BIND Records can be parsed into PHP objects using

Badcow\DNS\Parser\Parser
$file = file_get_contents('/path/to/example.com.txt');
$zone = Badcow\DNS\Parser\Parser::parse('example.com.', $file); //Badcow Zone Object

Simple as that.

More examples can be found in the The Docs

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