[Samba] Issues with OS/2 and Samba 4

[Jeremy Allison]

On Tue, Jun 02, 2015 at 02:56:07PM +0200, dam wrote:
> Hi folks,
> 
> I made some tests with OS/2 (really!) and Samba 4 (tested with
> 4.1.17) and found some issues:
> 
> 
> 1. Domain Logon
> 
> When doing a domain logon with "logon" then we get an error message
> in the log:
> 
> [2015/06/02 12:40:07.291956,  2] ../source4/nbt_server/dgram/netlogon.c:187(nbtd_mailslot_netlogon_handler)
>   unknown netlogon op 0 from 10.144.41.131:138
> [2015/06/02 12:40:07.292269,  1]
> ../librpc/ndr/ndr.c:296(ndr_print_debug)
>        netlogon: struct nbt_netlogon_packet
>           command                  : LOGON_REQUEST (0)
>           req                      : union nbt_netlogon_request(case 0)
>           logon0: struct NETLOGON_LOGON_REQUEST
>               computer_name            : 'TS-20107'
>               user_name                : 'TS'
>               mailslot_name            : '\MAILSLOT\TEMP\NETLOGON'
>               request_count            : 0x00 (0)
>               lmnt_token               : 0x0001 (1)
>               lm20_token               : 0xffff (65535)
> 
> When looking at the current source the respective LOGON_REQUEST is
> missing from the switch at
> https://git.samba.org/?p=samba.git;a=blob;f=source4/nbt_server/dgram/netlogon.c;h=0e5294cb94c42c13ef38d70885303998c75a7a39;hb=HEAD#l176
> 
> In Samba 3 this branch was still present and domain logon worked.
> 
> 
> 2. Mounting shares fails
> 
> When trying to mount a share from Samba 4 with "net use x:
> \\<server>\<sharename>" there is an
> error in the log of the form
> 
> [2015/06/02 13:01:29.655435,  2]
> ../libcli/auth/ntlm_check.c:437(ntlm_password_check)
>   ntlm_password_check: invalid LanMan password length (0) for user TS
> 
> First, the variable for length in the sourcecode seems wrong:
> https://git.samba.org/?p=samba.git;a=blob;f=libcli/auth/ntlm_check.c;h=7f91b52a5fd78982d85a300dc610329a7bd9a801;hb=HEAD#l435
> 
> I guess it should read "lm_response->length" in the debug message
> instead of "nt_response->length".
> 
> The value of "lm_response->length" is actually 1 in this case.
> 
> 
> So here is the question: are these supposed to work or is this
> considered legacy/unsupported/etc.?
> Is OS/2 still a supported client in Samba 4?
> The respective configuration options for smb.conf like "lanman auth"
> are still present in the code.
> 
> If it is supposed to work I would be glad to help debugging these
> issues.

Thanks a lot for checking these things ! No one on the Team
runs OS/2 so it isn't easy to test we still work with it,
although we should.

Can you log bugs for these issues and we will work through
them with you if you're willing to do the testing work ?

Thanks,

Jeremy.