[Samba] Lookup sid with libsmbclient (invoked from c# on mono)

[Aurélien Aptel]

Rowland penny via samba <samba at lists.samba.org> writes:
> I have no idea just what you are hoping to achieve, but it is seemingly 
> possible without authentication as 'wbinfo -n ACCOUNT_NAME' returns the 
> accounts SID. So try looking at the wbinfo code.

wbinfo is talking to winbind which itself is talking to the AD. In this
scenario the client previously joined (authenticated).

What Vincent is after I think is a simple standalone way to query
sid/names for his app to use that doesn't require seting up whole domain
member. The rpcclient cli tool can do it.

You can call the cli tool from your app (.110 is my AD ip, you can use
hostnames too):

    $ rpcclient -U administrator%mypassword -c 'lookupnames user1' //192.168.2.110
    user1 S-1-5-21-596735176-1287999152-3436313279-1104 (User: 1)
    $ rpcclient -U administrator%mypassword -c 'lookupsids S-1-5-21-596735176-1287999152-3436313279-1104' //192.168.2.110
    S-1-5-21-596735176-1287999152-3436313279-1104 NUC\user1 (1)

...Or copy the code (note that it is GPL though):

https://gitlab.com/samba-team/devel/samba/-/blob/master/source3/rpcclient/cmd_lsarpc.c#L391

Cheers,
-- 
Aurélien Aptel / SUSE Labs Samba Team
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