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.
This page is part of the GnuTLS (GnuTLS Transport Layer Security
Library) project. Information about the project can be found at
⟨http://www.gnutls.org/⟩. If you have a bug report for this
manual page, send it to email@example.com. This page was obtained
from the tarball gnutls-3.7.1.tar.xz fetched from
⟨http://www.gnutls.org/download.html⟩ on 2021-04-01. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to firstname.lastname@example.org