laysense/Workerman-DNS
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This commit is contained in:
Enoch 2024-01-29 16:39:28 +08:00
parent 2b2b608241
commit eb27843928
1 changed files with 54 additions and 0 deletions
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54
Dns.php
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@ -369,8 +369,11 @@ class Dns
*/
public static function decode($buffer)
{
/**
$data=bin2hex($buffer);
echo $data;
$id=substr($data,0,4);
$flag=substr($data,5,4);
$type=substr($data,-8,4);
switch($type){
case '0001':
@ -410,8 +413,59 @@ class Dns
}
$realname=substr($realname,1,-1);
$query=substr($data,24);
***/
#$returndata="$type".'|||'."$realname";
$data=bin2hex($buffer);
$id=substr($data,0,4);
$flag=substr($data,4,4);
$questions=substr($data,8,4);
$answerRRs=substr($data,12,4);
$authorityRRs=substr($data,16,4);
$additionalRRs=substr($data,20,4);
$startbyte=24;
$dlen=substr($data,$startbyte,2);
$startbyte=26;
$i=1;
while($dlen!='00'){
$domain[$i]=hex2bin(substr($data,$startbyte,hexdec($dlen)*2));
$startbyte=$startbyte+(hexdec($dlen)*2);
$dlen=substr($data,$startbyte,2);
$startbyte=$startbyte+2;
$i++;
}
$realname=join(".",$domain);
$type=substr($data,$startbyte,4);
switch($type){
case '0001':
$type='A';
break;
case '0002':
$type='NS';
break;
case '000c':
$type='PTR';
break;
case '0006':
$type='SOA';
break;
case '001c':
$type='AAAA';
break;
case '0005':
$type='CNAME';
break;
case '0010':
$type='TEXT';
break;
case '000f':
$type='MX';
break;
}
$query=substr($data,24,$startbyte-16);
echo $query."\n";
$returndata= json_encode(array('type' => $type, 'name' => "$realname", 'id'=>"$id", 'query'=>"$query"));
return $returndata;