gnutls_x509_crt_get_basic_constraints man page on FreeBSD

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       gnutls_x509_crt_get_basic_constraints  - This function returns the cer‐
       tificate basic constraints

       #include <gnutls/x509.h>

       int    gnutls_x509_crt_get_basic_constraints(gnutls_x509_crt_t	 cert,
       unsigned int * critical, int * ca, int * pathlen);

       gnutls_x509_crt_t cert
		   should contain a gnutls_x509_crt_t structure

       unsigned int * critical
		   will be non zero if the extension is marked as critical

       int * ca	   pointer  to	output	integer	 indicating  CA status, may be
		   NULL, value is 1 if the certificate CA flag is set, 0  oth‐

       int * pathlen
		   pointer  to	output	integer indicating path length (may be
		   NULL), non-negative values indicate a  present  pathLenCon‐
		   straint  field  and	the actual value, -1 indicate that the
		   field is absent.

       This function will read the certificate's basic constraints, and return
       the certificates CA status.  It reads the basicConstraints X.509 exten‐
       sion (

       If the certificate is a CA a positive value will be returned,  or  zero
       if  the certificate does not have CA flag set.  A negative value may be
       returned in case of errors.  If the certificate does  not  contain  the
       basicConstraints	 extension  GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will
       be returned.

       Report	bugs   to    <>.     GnuTLS	 home	 page:  General  help  using GNU software:

       Copyright © 2008 Free Software Foundation.
       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.

       The full documentation for gnutls is maintained as  a  Texinfo  manual.
       If  the	info  and gnutls programs are properly installed at your site,
       the command

	      info gnutls

       should give you access to the complete manual.

gnutls				     2gnutls_x509_crt_get_basic_constraints(3)

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