Fwd: Username remapping/renaming during login

[Damian Kaliszan]

Hi,

I'd  like  to  ask  you  (I couldn't find an answer on OpenSSH mailing
lists)  if  it's  possible  to  rename/remap/manipulate  with username
during logging?

I    found    a    similar    solution    to    what   I   want   here
https://sourceforge.net/projects/ukngi/files/meg/1.0-1/  but  this  is
gsissh.

To be precise I tried 2 possible solutions:

a/ enabled  pam_script  pam  module  as  the  first  module during
authentication and set PAM_USER in pam_script_auth script

b/  I  created  my  custom  module in which inside pam_sm_authenticate
function I call pam_set_item where I change the username


but  both failed. Could you please help me and answer if it's possible
at all?? (let's leave other issues e.g. security aside)


Best,
Damian