NAME

       gnutls_x509_ext_import_name_constraints - API function

SYNOPSIS

       #include <gnutls/x509-ext.h>

       int      gnutls_x509_ext_import_name_constraints(const      gnutls_datum_t      *     ext,
       gnutls_x509_name_constraints_t nc, unsigned int flags);

ARGUMENTS

       const gnutls_datum_t * ext
                   a DER encoded extension

       gnutls_x509_name_constraints_t nc
                   The nameconstraints

       unsigned int flags
                   zero or GNUTLS_NAME_CONSTRAINTS_FLAG_APPEND

DESCRIPTION

       This function will return an intermediate type containing  the  name  constraints  of  the
       provided   NameConstraints   extension.   That   can   be   used   in   combination   with
       gnutls_x509_name_constraints_check() to verify whether a server's name  is  in  accordance
       with the constraints.

       When  the   flags  is  set to GNUTLS_NAME_CONSTRAINTS_FLAG_APPEND, then if the  nc type is
       empty this function will behave identically as if the flag  was  not  set.   Otherwise  if
       there  are  elements  in  the   nc  structure then the constraints will be merged with the
       existing constraints following RFC5280 p6.1.4  (excluded  constraints  will  be  appended,
       permitted will be intersected).

       Note that  nc must be initialized prior to calling this function.

RETURNS

       On success, GNUTLS_E_SUCCESS (0) is returned, GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE if the
       extension is not present, otherwise a negative error value.

SINCE

       3.3.0

REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: http://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2022 Free Software Foundation, Inc., and others.
       Copying and distribution of this file, with or without modification, are permitted in  any
       medium without royalty provided the copyright notice and this notice are preserved.

SEE ALSO

       The   full   documentation  for  gnutls  is  maintained  as  a  Texinfo  manual.   If  the
       /usr/share/doc/gnutls/ directory does not contain the HTML form visit

       http://www.gnutls.org/manual/