LDAP : SambaMungedDial Syntax

[Yohann Fourteau]

Selon Yohann Fourteau <yohann.fourteau at aitb.org>:
> So for people who want to extract info from sambaMungedDial attribute, I ve
> done
> a little script (in php) :
> ----------------------------------------------
> <?
> function hexbin($hex){
>    $bin='';
>    for($i=0;$i<strlen($hex);$i+=2)
>      $bin.=chr(hexdec(substr($hex,$i,2)));
>    return $bin;
> }
> 
> $res=ldap_connect("localhost");
> ldap_bind($res);
> $dn="the dn";
> $ret=ldap_read($res,$dn,"objectclass=*",array("sambamungeddial"));
> $entries = ldap_get_entries($res, $ret);
> $str=$entries[0]["sambamungeddial"][0];
> ldap_close($res);
> 
> 
> $string=base64_decode($str);
> $len=strlen($string);
> $noField=0;
> $i=0;
> while($i<$len)
> {
>     if ($string[$i+6]=='C' && $string[$i+8]=='t' && $string[$i+10]=='x')
>     {
>         if ($noField==0)
>             $first=$i;
>         $fieldNameLen=ord($string[$i]);
>         $field[$noField]["name"]="";
>         $field[$noField]["value"]="";
>         for($j=$i+6;$j<$i+6+$fieldNameLen;$j+=2)
>         {
>             $field[$noField]["name"].=$string[$j];
>         }
>         $fieldValueLen=ord($string[$i+2]);
>         for($j=$i+6+$fieldNameLen;$j<$i+6+$fieldNameLen+$fieldValueLen;$j++)
>         {
>             $field[$noField]["value"].=$string[$j];
>         }
>         $noField++;
>         $i=$i+6+$fieldNameLen+$fieldValueLen;
>     }
>     else
>         $i++;
> }
> 
>
$stringFields=array("CtxMinEncryptionLevel","CtxWorkDirectory","CtxNWLogonServer","CtxWFHomeDir","CtxWFHomeDirDrive","CtxWFProfilePath","CtxInitialProgram","CtxCallbackNumber");
> foreach($field as $index => $fi)
> {
>     if (in_array($fi["name"],$stringFields))
>     {
>         $field[$index]["value"]=hexbin($fi["value"]);
>     }
> }
> 
> var_dump($field);
> // no idea what it is, the rest is space caracters.
> echo ord($string[$first-4])."\n";
> echo ord($string[$first-2])."\n";
> ?>
> --------------------------------------------
> 
> I'm writing another script (in php) which integrate data into that
> attribute.





Here it is (with same $field array - be carefull to the order of elements in
that array) :
----------------------------
$strBeginBase64="IAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAUAAQAA==";
$strBegin=base64_decode($strBeginBase64);

$stringFields=array("CtxMinEncryptionLevel","CtxWorkDirectory","CtxNWLogonServer","CtxWFHomeDir","CtxWFHomeDirDrive","CtxWFProfilePath","CtxInitialProgram","CtxCallbackNumber");
foreach($field as $index => $fi)
{
    if (in_array($fi["name"],$stringFields))
    {
        $field[$index]["value"]=bin2hex($fi["value"]);
    }
}

$finalString=$strBegin;
foreach($field as $index => $fi)
{
    $name=$fi["name"];
    $finalName="";
    for($i=0;$i<strlen($name);$i++)
    {
        $finalName.=$name[$i].chr(0);
    }
    $nameLenght=strlen($finalName);
    $finalString.=chr($nameLenght).chr(0);
    $valueLenght=strlen($fi["value"]);
    $finalString.=chr($valueLenght).chr(0);
    $finalString.=chr(1).chr(0);
    $finalString.=$finalName;
    $finalString.=$fi["value"];
}

echo base64_encode($finalString);
echo "\n";
----------------------------------

Hope it'll help somebody.
-- 
Yohann F.