public function __construct($type, $algorithm, $labels, $originalttl, $expiration, $inception, $keytag)
{
parent::__construct();
date_default_timezone_set('UTC');
$types = new DNSTypes();
$this->setTypecovered($types->GetById($type));
$this->setAlgorithm($algorithm);
$this->setLabels($labels);
$this->setOriginalTTL($originalttl);
$this->setExpirationTimestamp($expiration);
$this->setInceptionTimestamp($inception);
$this->setExpirationDate(date('YmdHis', $expiration));
$this->setInceptionDate(date('YmdHis', $inception));
$this->setKeytag($keytag);
}
public function ReadRecord($buffer, $resulttype = '')
{
$domain = $this->ReadDomainLabel($buffer);
$ans_header_bin = $this->ReadResponse($buffer, 10);
// 10 byte header
$ans_header = unpack("ntype/nclass/Nttl/nlength", $ans_header_bin);
#echo "Record Type ".$ans_header['type']." Class ".$ans_header['class']." TTL ".$ans_header['ttl']." Length ".$ans_header['length']."\n";
#$this->DebugBinary($buffer);
$types = new DNSTypes();
$typeid = $types->GetById($ans_header['type']);
//$extras = array();
switch ($typeid) {
case 'A':
$result = new dnsAresult(implode(".", unpack("Ca/Cb/Cc/Cd", $this->ReadResponse($buffer, 4))));
break;
case 'NS':
$result = new dnsNSresult($this->ReadDomainLabel($buffer));
break;
case 'PTR':
$result = new dnsPTRresult($this->ReadDomainLabel($buffer));
break;
case 'CNAME':
$result = new dnsCNAMEresult($this->ReadDomainLabel($buffer));
break;
case 'MX':
$result = new dnsMXresult();
$prefs = $this->ReadResponse($buffer, 2);
$prefs = unpack("nprio", $prefs);
$result->setPrio($prefs['prio']);
$result->setServer($this->ReadDomainLabel($buffer));
break;
case 'SOA':
$result = new dnsSOAresult();
$result->setNameserver($this->ReadDomainLabel($buffer));
$result->setResponsible($this->ReadDomainLabel($buffer));
$buffer = $this->ReadResponse($buffer, 20);
$extras = unpack("Nserial/Nrefresh/Nretry/Nexpiry/Nminttl", $buffer);
$result->setSerial($extras['serial']);
$result->setRefresh($extras['refresh']);
$result->setRetry($extras['retry']);
$result->setExpiry($extras['expiry']);
$result->setMinttl($extras['minttl']);
break;
case 'TXT':
$result = new dnsTXTResult($this->ReadResponse($buffer, $ans_header['length']));
break;
case 'DS':
$stuff = $this->ReadResponse($buffer, $ans_header['length']);
$length = ($ans_header['length'] - 4) * 2 - 8;
$stuff = unpack("nkeytag/Calgo/Cdigest/H" . $length . "string/H*rest", $stuff);
$stuff['string'] = strtoupper($stuff['string']);
$stuff['rest'] = strtoupper($stuff['rest']);
$result = new dnsDSresult($stuff['keytag'], $stuff['algo'], $stuff['digest'], $stuff['string'], $stuff['rest']);
break;
case 'DNSKEY':
$stuff = $this->ReadResponse($buffer, $ans_header['length']);
$this->keytag($stuff, $ans_header['length']);
$this->keytag2($stuff, $ans_header['length']);
$extras = unpack("nflags/Cprotocol/Calgorithm/a*pubkey", $stuff);
$flags = sprintf("%016b\n", $extras['flags']);
$result = new dnsDNSKEYresult($extras['flags'], $extras['protocol'], $extras['algorithm'], $extras['pubkey']);
$result->setKeytag($this->keytag($stuff, $ans_header['length']));
if ($flags[7] == '1') {
$result->setZoneKey(true);
}
if ($flags[15] == '1') {
$result->setSep(true);
}
break;
case 'RRSIG':
$stuff = $this->ReadResponse($buffer, 18);
//$length = $ans_header['length'] - 18;
$test = unpack("ntype/calgorithm/clabels/Noriginalttl/Nexpiration/Ninception/nkeytag", $stuff);
$result = new dnsRRSIGresult($test['type'], $test['algorithm'], $test['labels'], $test['originalttl'], $test['expiration'], $test['inception'], $test['keytag']);
$name = $this->ReadDomainLabel($buffer);
$result->setSignername($name);
$sig = $this->ReadResponse($buffer, $ans_header['length'] - (strlen($name) + 2) - 18);
$result->setSignature($sig);
$result->setSignatureBase64(base64_encode($sig));
break;
default:
// something we can't deal with
$result = new dnsResult();
#echo "Length: ".$ans_header['length']."\n";
$stuff = $this->ReadResponse($buffer, $ans_header['length']);
$result->setData($stuff);
break;
}
$result->setDomain($domain);
$result->setType($ans_header['type']);
$result->setTypeid($typeid);
$result->setClass($ans_header['class']);
$result->setTtl($ans_header['ttl']);
$this->AddResult($result, $resulttype);
return;
}
