[python-ldap] AD objectGUID conversion to string

[Michael Ströder]

Joseph L. Casale wrote:
>> here is an example of the output of the
>> objectGUID query:   '\xd3\x18W|T\xc4!A\x90\xe3\xa7\xf7\xe8\xe1\xd9\xf1'
>> Can anyone confirm what this format is?
> 
> As Michaels code illustrated, the value is byte encoded.

Yes, the LDAP syntax of 'objectGUID' is simply OctetString.

> Data in AD is typically utf-16 encoded.

No! The LDAP interface of MS AD is LDAPv3 compliant and therefore uses UTF-8
for LDAP syntax DirectoryString.

> The "\xnn" notation is hexadecimal values, see string literals in the Python docs.
> 
> In [1]: import uuid
> 
> In [2]: s = b'\xd3\x18W|T\xc4!A\x90\xe3\xa7\xf7\xe8\xe1\xd9\xf1'
> 
> In [3]: uuid.UUID(bytes_le=s)
> Out[3]: UUID('7c5718d3-c454-4121-90e3-a7f7e8e1d9f1')

Yupp!

Ciao, Michael.

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