/*
 * lib/krb5/ccache/file/fcc_gprin.c
 *
 * Copyright 1990,1991 by the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * Export of this software from the United States of America may
 *   require a specific license from the United States Government.
 *   It is the responsibility of any person or organization contemplating
 *   export to obtain such a license before exporting.
 * 
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 * 
 *
 * This file contains the source code for krb5_fcc_get_principal.
 */


#include "fcc.h"

/*
 * Modifies:
 * id, princ
 *
 * Effects:
 * Retrieves the primary principal from id, as set with
 * krb5_fcc_initialize.  The principal is returned is allocated
 * storage that must be freed by the caller via krb5_free_principal.
 *
 * Errors:
 * system errors
 * KRB5_CC_NOMEM
 */
krb5_error_code KRB5_CALLCONV
krb5_fcc_get_principal(context, id, princ)
   krb5_context context;
   krb5_ccache id;
   krb5_principal *princ;
{
     krb5_error_code kret = KRB5_OK;
     krb5_fcc_data *data = (krb5_fcc_data *)id->data;

     MAYBE_OPEN(context, id, FCC_OPEN_RDONLY);
     
     /* make sure we're beyond the header */
     kret = krb5_fcc_skip_header(context, id);
     if (kret) goto done;
     kret = krb5_fcc_read_principal(context, id, princ);

done:
     MAYBE_CLOSE(context, id, kret);
     return kret;
}