- converts a principal to a system local name
Kerberos 5 Library (libkrb5, -lkrb5)
Fa krb5_context context
Fa krb5_const_principal name
Fa size_t lnsize
Fa char *lname
This function takes a principal
Fa name ,
verifies that it is in the local realm (using
Fn krb5_get_default_realms )
and then returns the local name of the principal.
isn't in one of the local realms an error is returned.
If the size
Fa ( lnsize )
of the local name
Fa ( lname )
is too small, an error is returned.
should only be use by an application that implements protocols that
don't transport the login name and thus needs to convert a principal
to a local name.
Protocols should be designed so that they authenticate using
Kerberos, send over the login name and then verify the principal
that is authenticated is allowed to login and the login name.
A way to check if a user is allowed to login is using the function
Fn krb5_kuserok .