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This commit is contained in:
Enoch 2022-12-18 18:03:25 +08:00
parent 03b27f8cb1
commit 2fab753800
1 changed files with 168 additions and 1 deletions
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169
Dns.php
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@ -30,6 +30,7 @@ class Dns
*/
public static function encode($buffer)
{
$buffer=json_decode($buffer);
$type=$buffer->type;
switch($type){
@ -99,6 +100,110 @@ class Dns
$n=$n+1;
};
break;
case 'CNAME+A':
$type='0005';
$ns=$buffer->detail;
$nss=explode('.',$ns);
$detail[0]='';
foreach($nss as $part){
$len=str_pad(dechex(strlen($part)),2,"0",STR_PAD_LEFT);
$tpart=bin2hex($part);
$detail[0]=$detail[0].$len.$tpart;
};
$detail[0]=$detail[0].'00';
$lenth[0]=str_pad(dechex((strlen($detail[0])/2)),4,"0",STR_PAD_LEFT);
$ttl=str_pad(dechex($buffer->ttl),8,"0",STR_PAD_LEFT);
$answer='';
$answer=$answer.'C00C'.$type.'0001'.$ttl.$lenth[0].$detail[0];
$ip=dns_get_record($ns,DNS_A);
$type='0001';
$n=0;
foreach($ip as $i){
$ttl=str_pad(dechex($i['ttl']),8,"0",STR_PAD_LEFT);
$i=$i['ip'];
$nss=explode('.',$i);
$detail[$n]='';
foreach($nss as $part){
$tpart=str_pad(dechex($part),2,"0",STR_PAD_LEFT);
$detail[$n]=$detail[$n].$tpart;
};
$lenth[$n]=str_pad(dechex((strlen($detail[$n])/2)),4,"0",STR_PAD_LEFT);
$n=$n+1;
};
$n=0;
foreach($detail as $c){
$rlenth='';
$rlenth=$lenth[$n];
$n=$n+1;
$answer=$answer.'C02B'.$type.'0001'.$ttl.$rlenth.$c;
}
$status='8180';
$questions='0001';
$AuthorityRRs='0000';
$AdditionalRRs='0000';
$AnswerRRs=str_pad((count((array)$ip)+1),4,"0",STR_PAD_LEFT);
$response=$buffer->id.$status.$questions.$AnswerRRs.$AuthorityRRs.$AdditionalRRs.$buffer->query.$answer;
return hex2bin($response);
break;
case 'CNAME+AAAA':
$type='0005';
$ns=$buffer->detail;
$nss=explode('.',$ns);
$detail[0]='';
foreach($nss as $part){
$len=str_pad(dechex(strlen($part)),2,"0",STR_PAD_LEFT);
$tpart=bin2hex($part);
$detail[0]=$detail[0].$len.$tpart;
};
$detail[0]=$detail[0].'00';
$lenth[0]=str_pad(dechex((strlen($detail[0])/2)),4,"0",STR_PAD_LEFT);
$ttl=str_pad(dechex($buffer->ttl),8,"0",STR_PAD_LEFT);
$answer='';
$answer=$answer.'C00C'.$type.'0001'.$ttl.$lenth[0].$detail[0];
$ip=dns_get_record($ns,DNS_AAAA);
$type='001C';
$n=0;
foreach($ip as $i){
$ipv6=$i['ipv6'];
$hexstr = unpack("H*hex", inet_pton($ipv6));
$ipv6=substr(preg_replace("/([A-f0-9]{4})/", "$1:", $hexstr['hex']), 0, -1);
$ipv6=str_replace(':','',$ipv6);
#$ipv6= bin2hex($ipv6);
$detail[$n]="$ipv6";
$lenth[$n]="0010";
$n=$n+1;
};
$n=0;
foreach($detail as $c){
$rlenth='';
$rlenth=$lenth[$n];
$n=$n+1;
$answer=$answer.'C02C'.$type.'0001'.$ttl.$rlenth.$c;
}
$status='8180';
$questions='0001';
$AuthorityRRs='0000';
$AdditionalRRs='0000';
$AnswerRRs=str_pad((count((array)$ip)+1),4,"0",STR_PAD_LEFT);
$response=$buffer->id.$status.$questions.$AnswerRRs.$AuthorityRRs.$AdditionalRRs.$buffer->query.$answer;
return hex2bin($response);
break;
case 'SOA':
$type='0006';
$ns=$buffer->detail;
@ -174,12 +279,74 @@ class Dns
$n=$n+1;
};
break;
case 'none':
$type='0006';
$ns=$buffer->detail;
$url=$ns;
while(true){
preg_match("#\.(.*)#i",$url,$match);//获取根域名
$domin = $match[1];
$soa=dns_get_record($domin,DNS_SOA);
if(array_key_exists('0',$soa)){
if(array_key_exists('mname',$soa[0])){
$qname=$domin;
$ns=$soa[0];
break;
}else{
$url=$domin;
}
}else{
$url=$domin;
}
}
$nss=explode('.',$ns['mname']);
$detail='';
foreach($nss as $part){
$len=str_pad(dechex(strlen($part)),2,"0",STR_PAD_LEFT);
$tpart=bin2hex($part);
$detail=$detail.$len.$tpart;
};
$detail=$detail.'00';
unset($nss,$len,$tpart);
$nss=explode('.',$ns['rname']);
foreach($nss as $part){
$len=str_pad(dechex(strlen($part)),2,"0",STR_PAD_LEFT);
$tpart=bin2hex($part);
$detail=$detail.$len.$tpart;
};
$detail=$detail.'00'.str_pad(dechex($ns['serial']),8,"0",STR_PAD_LEFT).str_pad(dechex($ns['refresh']),8,"0",STR_PAD_LEFT).str_pad(dechex($ns['retry']),8,"0",STR_PAD_LEFT).str_pad(dechex($ns['expire']),8,"0",STR_PAD_LEFT).str_pad(dechex($ns['minimum-ttl']),8,"0",STR_PAD_LEFT);
$lenth=str_pad(dechex((strlen($detail)/2)),4,"0",STR_PAD_LEFT);
$ttl=str_pad(dechex($buffer->ttl),8,"0",STR_PAD_LEFT);
$status='8183';
$questions='0001';
$AnswerRRs='0000';
$AuthorityRRs='0001';
$AdditionalRRs='0000';
#$qname
$nss=explode('.',$qname);
$qname='';
foreach($nss as $part){
#$len=strlen($part);
$len=str_pad(dechex(strlen($part)),2,"0",STR_PAD_LEFT);
$tpart=bin2hex($part);
$qname=$qname.$len.$tpart;
};
$qname=$qname.'00';
$answer='';
$answer=$answer.$qname.$type.'0001'.$ttl.$lenth.$detail;
$response=$buffer->id.$status.$questions.$AnswerRRs.$AuthorityRRs.$AdditionalRRs.$buffer->query.$answer;
return hex2bin($response);
break;
}
$ttl=str_pad(dechex($buffer->ttl),8,"0",STR_PAD_LEFT);
$status='8180';
$questions='0001';
$AnswerRRs=str_pad(count((array)$buffer->detail),4,"0",STR_PAD_LEFT);
#$AnswerRRs='0001';
$AuthorityRRs='0000';
$AdditionalRRs='0000';
$answer='';