<?php
namespace React\Tests\Dns\Protocol;
use PHPUnit\Framework\TestCase;
use React\Dns\Protocol\Parser;
use React\Dns\Model\Message;
class ParserTest extends TestCase
{
public function setUp()
{
$this->parser = new Parser();
}
/**
* @dataProvider provideConvertTcpDumpToBinary
*/
public function testConvertTcpDumpToBinary($expected, $data)
{
$this->assertSame($expected, $this->convertTcpDumpToBinary($data));
}
public function provideConvertTcpDumpToBinary()
{
return array(
array(chr(0x72).chr(0x62), "72 62"),
array(chr(0x72).chr(0x62).chr(0x01).chr(0x00), "72 62 01 00"),
array(chr(0x72).chr(0x62).chr(0x01).chr(0x00).chr(0x00).chr(0x01), "72 62 01 00 00 01"),
array(chr(0x01).chr(0x00).chr(0x01), "01 00 01"),
);
}
public function testParseRequest()
{
$data = "";
$data .= "72 62 01 00 00 01 00 00 00 00 00 00"; // header
$data .= "04 69 67 6f 72 02 69 6f 00"; // question: igor.io
$data .= "00 01 00 01"; // question: type A, class IN
$data = $this->convertTcpDumpToBinary($data);
$request = $this->parser->parseMessage($data);
$header = $request->header;
$this->assertSame(0x7262, $header->get('id'));
$this->assertSame(1, $header->get('qdCount'));
$this->assertSame(0, $header->get('anCount'));
$this->assertSame(0, $header->get('nsCount'));
$this->assertSame(0, $header->get('arCount'));
$this->assertSame(0, $header->get('qr'));
$this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
$this->assertSame(0, $header->get('aa'));
$this->assertSame(0, $header->get('tc'));
$this->assertSame(1, $header->get('rd'));
$this->assertSame(0, $header->get('ra'));
$this->assertSame(0, $header->get('z'));
$this->assertSame(Message::RCODE_OK, $header->get('rcode'));
$this->assertCount(1, $request->questions);
$this->assertSame('igor.io', $request->questions[0]['name']);
$this->assertSame(Message::TYPE_A, $request->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $request->questions[0]['class']);
}
public function testParseResponse()
{
$data = "";
$data .= "72 62 81 80 00 01 00 01 00 00 00 00"; // header
$data .= "04 69 67 6f 72 02 69 6f 00"; // question: igor.io
$data .= "00 01 00 01"; // question: type A, class IN
$data .= "c0 0c"; // answer: offset pointer to igor.io
$data .= "00 01 00 01"; // answer: type A, class IN
$data .= "00 01 51 80"; // answer: ttl 86400
$data .= "00 04"; // answer: rdlength 4
$data .= "b2 4f a9 83"; // answer: rdata 178.79.169.131
$data = $this->convertTcpDumpToBinary($data);
$response = $this->parser->parseMessage($data);
$header = $response->header;
$this->assertSame(0x7262, $header->get('id'));
$this->assertSame(1, $header->get('qdCount'));
$this->assertSame(1, $header->get('anCount'));
$this->assertSame(0, $header->get('nsCount'));
$this->assertSame(0, $header->get('arCount'));
$this->assertSame(1, $header->get('qr'));
$this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
$this->assertSame(0, $header->get('aa'));
$this->assertSame(0, $header->get('tc'));
$this->assertSame(1, $header->get('rd'));
$this->assertSame(1, $header->get('ra'));
$this->assertSame(0, $header->get('z'));
$this->assertSame(Message::RCODE_OK, $header->get('rcode'));
$this->assertCount(1, $response->questions);
$this->assertSame('igor.io', $response->questions[0]['name']);
$this->assertSame(Message::TYPE_A, $response->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
$this->assertCount(1, $response->answers);
$this->assertSame('igor.io', $response->answers[0]->name);
$this->assertSame(Message::TYPE_A, $response->answers[0]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
$this->assertSame(86400, $response->answers[0]->ttl);
$this->assertSame('178.79.169.131', $response->answers[0]->data);
}
public function testParseQuestionWithTwoQuestions()
{
$data = "";
$data .= "04 69 67 6f 72 02 69 6f 00"; // question: igor.io
$data .= "00 01 00 01"; // question: type A, class IN
$data .= "03 77 77 77 04 69 67 6f 72 02 69 6f 00"; // question: www.igor.io
$data .= "00 01 00 01"; // question: type A, class IN
$data = $this->convertTcpDumpToBinary($data);
$request = new Message();
$request->header->set('qdCount', 2);
$request->data = $data;
$this->parser->parseQuestion($request);
$this->assertCount(2, $request->questions);
$this->assertSame('igor.io', $request->questions[0]['name']);
$this->assertSame(Message::TYPE_A, $request->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $request->questions[0]['class']);
$this->assertSame('www.igor.io', $request->questions[1]['name']);
$this->assertSame(Message::TYPE_A, $request->questions[1]['type']);
$this->assertSame(Message::CLASS_IN, $request->questions[1]['class']);
}
public function testParseAnswerWithInlineData()
{
$data = "";
$data .= "04 69 67 6f 72 02 69 6f 00"; // answer: igor.io
$data .= "00 01 00 01"; // answer: type A, class IN
$data .= "00 01 51 80"; // answer: ttl 86400
$data .= "00 04"; // answer: rdlength 4
$data .= "b2 4f a9 83"; // answer: rdata 178.79.169.131
$data = $this->convertTcpDumpToBinary($data);
$response = new Message();
$response->header->set('anCount', 1);
$response->data = $data;
$this->parser->parseAnswer($response);
$this->assertCount(1, $response->answers);
$this->assertSame('igor.io', $response->answers[0]->name);
$this->assertSame(Message::TYPE_A, $response->answers[0]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
$this->assertSame(86400, $response->answers[0]->ttl);
$this->assertSame('178.79.169.131', $response->answers[0]->data);
}
public function testParseResponseWithCnameAndOffsetPointers()
{
$data = "";
$data .= "9e 8d 81 80 00 01 00 01 00 00 00 00"; // header
$data .= "04 6d 61 69 6c 06 67 6f 6f 67 6c 65 03 63 6f 6d 00"; // question: mail.google.com
$data .= "00 05 00 01"; // question: type CNAME, class IN
$data .= "c0 0c"; // answer: offset pointer to mail.google.com
$data .= "00 05 00 01"; // answer: type CNAME, class IN
$data .= "00 00 a8 9c"; // answer: ttl 43164
$data .= "00 0f"; // answer: rdlength 15
$data .= "0a 67 6f 6f 67 6c 65 6d 61 69 6c 01 6c"; // answer: rdata googlemail.l.
$data .= "c0 11"; // answer: rdata offset pointer to google.com
$data = $this->convertTcpDumpToBinary($data);
$response = $this->parser->parseMessage($data);
$this->assertCount(1, $response->questions);
$this->assertSame('mail.google.com', $response->questions[0]['name']);
$this->assertSame(Message::TYPE_CNAME, $response->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
$this->assertCount(1, $response->answers);
$this->assertSame('mail.google.com', $response->answers[0]->name);
$this->assertSame(Message::TYPE_CNAME, $response->answers[0]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
$this->assertSame(43164, $response->answers[0]->ttl);
$this->assertSame('googlemail.l.google.com', $response->answers[0]->data);
}
public function testParseAAAAResponse()
{
$data = "";
$data .= "cd 72 81 80 00 01 00 01 00 00 00 00 06"; // header
$data .= "67 6f 6f 67 6c 65 03 63 6f 6d 00"; // question: google.com
$data .= "00 1c 00 01"; // question: type AAAA, class IN
$data .= "c0 0c"; // answer: offset pointer to google.com
$data .= "00 1c 00 01"; // answer: type AAAA, class IN
$data .= "00 00 01 2b"; // answer: ttl 299
$data .= "00 10"; // answer: rdlength 16
$data .= "2a 00 14 50 40 09 08 09 00 00 00 00 00 00 20 0e"; // answer: 2a00:1450:4009:809::200e
$data = $this->convertTcpDumpToBinary($data);
$response = $this->parser->parseMessage($data);
$header = $response->header;
$this->assertSame(0xcd72, $header->get('id'));
$this->assertSame(1, $header->get('qdCount'));
$this->assertSame(1, $header->get('anCount'));
$this->assertSame(0, $header->get('nsCount'));
$this->assertSame(0, $header->get('arCount'));
$this->assertSame(1, $header->get('qr'));
$this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
$this->assertSame(0, $header->get('aa'));
$this->assertSame(0, $header->get('tc'));
$this->assertSame(1, $header->get('rd'));
$this->assertSame(1, $header->get('ra'));
$this->assertSame(0, $header->get('z'));
$this->assertSame(Message::RCODE_OK, $header->get('rcode'));
$this->assertCount(1, $response->questions);
$this->assertSame('google.com', $response->questions[0]['name']);
$this->assertSame(Message::TYPE_AAAA, $response->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
$this->assertCount(1, $response->answers);
$this->assertSame('google.com', $response->answers[0]->name);
$this->assertSame(Message::TYPE_AAAA, $response->answers[0]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
$this->assertSame(299, $response->answers[0]->ttl);
$this->assertSame('2a00:1450:4009:809::200e', $response->answers[0]->data);
}
public function testParseResponseWithTwoAnswers()
{
$data = "";
$data .= "bc 73 81 80 00 01 00 02 00 00 00 00"; // header
$data .= "02 69 6f 0d 77 68 6f 69 73 2d 73 65 72 76 65 72 73 03 6e 65 74 00";
// question: io.whois-servers.net
$data .= "00 01 00 01"; // question: type A, class IN
$data .= "c0 0c"; // answer: offset pointer to io.whois-servers.net
$data .= "00 05 00 01"; // answer: type CNAME, class IN
$data .= "00 00 00 29"; // answer: ttl 41
$data .= "00 0e"; // answer: rdlength 14
$data .= "05 77 68 6f 69 73 03 6e 69 63 02 69 6f 00"; // answer: rdata whois.nic.io
$data .= "c0 32"; // answer: offset pointer to whois.nic.io
$data .= "00 01 00 01"; // answer: type CNAME, class IN
$data .= "00 00 0d f7"; // answer: ttl 3575
$data .= "00 04"; // answer: rdlength 4
$data .= "c1 df 4e 98"; // answer: rdata 193.223.78.152
$data = $this->convertTcpDumpToBinary($data);
$response = $this->parser->parseMessage($data);
$this->assertCount(1, $response->questions);
$this->assertSame('io.whois-servers.net', $response->questions[0]['name']);
$this->assertSame(Message::TYPE_A, $response->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
$this->assertCount(2, $response->answers);
$this->assertSame('io.whois-servers.net', $response->answers[0]->name);
$this->assertSame(Message::TYPE_CNAME, $response->answers[0]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
$this->assertSame(41, $response->answers[0]->ttl);
$this->assertSame('whois.nic.io', $response->answers[0]->data);
$this->assertSame('whois.nic.io', $response->answers[1]->name);
$this->assertSame(Message::TYPE_A, $response->answers[1]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[1]->class);
$this->assertSame(3575, $response->answers[1]->ttl);
$this->assertSame('193.223.78.152', $response->answers[1]->data);
}
public function testParsePTRResponse()
{
$data = "";
$data .= "5d d8 81 80 00 01 00 01 00 00 00 00"; // header
$data .= "01 34 01 34 01 38 01 38 07 69 6e"; // question: 4.4.8.8.in-addr.arpa
$data .= "2d 61 64 64 72 04 61 72 70 61 00"; // question (continued)
$data .= "00 0c 00 01"; // question: type PTR, class IN
$data .= "c0 0c"; // answer: offset pointer to rdata
$data .= "00 0c 00 01"; // answer: type PTR, class IN
$data .= "00 01 51 7f"; // answer: ttl 86399
$data .= "00 20"; // answer: rdlength 32
$data .= "13 67 6f 6f 67 6c 65 2d 70 75 62 6c 69 63 2d 64"; // answer: rdata google-public-dns-b.google.com.
$data .= "6e 73 2d 62 06 67 6f 6f 67 6c 65 03 63 6f 6d 00";
$data = $this->convertTcpDumpToBinary($data);
$response = $this->parser->parseMessage($data);
$header = $response->header;
$this->assertSame(0x5dd8, $header->get('id'));
$this->assertSame(1, $header->get('qdCount'));
$this->assertSame(1, $header->get('anCount'));
$this->assertSame(0, $header->get('nsCount'));
$this->assertSame(0, $header->get('arCount'));
$this->assertSame(1, $header->get('qr'));
$this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
$this->assertSame(0, $header->get('aa'));
$this->assertSame(0, $header->get('tc'));
$this->assertSame(1, $header->get('rd'));
$this->assertSame(1, $header->get('ra'));
$this->assertSame(0, $header->get('z'));
$this->assertSame(Message::RCODE_OK, $header->get('rcode'));
$this->assertCount(1, $response->questions);
$this->assertSame('4.4.8.8.in-addr.arpa', $response->questions[0]['name']);
$this->assertSame(Message::TYPE_PTR, $response->questions[0]['type']);
$this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
$this->assertCount(1, $response->answers);
$this->assertSame('4.4.8.8.in-addr.arpa', $response->answers[0]->name);
$this->assertSame(Message::TYPE_PTR, $response->answers[0]->type);
$this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
$this->assertSame(86399, $response->answers[0]->ttl);
$this->assertSame('google-public-dns-b.google.com', $response->answers[0]->data);
}
/**
* @expectedException InvalidArgumentException
*/
public function testParseIncomplete()
{
$data = "";
$data .= "72 62 01 00 00 01 00 00 00 00 00 00"; // header
$data .= "04 69 67 6f 72 02 69 6f 00"; // question: igor.io
//$data .= "00 01 00 01"; // question: type A, class IN
$data = $this->convertTcpDumpToBinary($data);
$this->parser->parseMessage($data);
}
private function convertTcpDumpToBinary($input)
{
// sudo ngrep -d en1 -x port 53
return pack('H*', str_replace(' ', '', $input));
}
}