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37 .Dt KRB5_ANAME_TO_LOCALNAME 3
40 .Nm krb5_aname_to_localname
41 .Nd converts a principal to a system local name
43 Kerberos 5 Library (libkrb5, -lkrb5)
47 .Fo krb5_aname_to_localname
48 .Fa "krb5_context context"
49 .Fa "krb5_const_principal name"
54 This function takes a principal
56 verifies that it is in the local realm (using
57 .Fn krb5_get_default_realms )
58 and then returns the local name of the principal.
62 isn't in one of the local realms an error is returned.
68 is too small, an error is returned.
70 .Fn krb5_aname_to_localname
71 should only be use by an application that implements protocols that
72 don't transport the login name and thus needs to convert a principal
75 Protocols should be designed so that they authenticate using
76 Kerberos, send over the login name and then verify the principal
77 that is authenticated is allowed to login and the login name.
78 A way to check if a user is allowed to login is using the function
81 .Xr krb5_get_default_realms 3 ,