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gnutls_x509_crt_get_basic_constraints(3)      gnutls	 gnutls_x509_crt_get_basic_constraints(3)

NAME
       gnutls_x509_crt_get_basic_constraints - API function

SYNOPSIS
       #include <gnutls/x509.h>

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

ARGUMENTS
       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

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

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

DESCRIPTION
       This  function  will read the certificate's basic constraints, and return the certificates
       CA status.  It reads the basicConstraints X.509 extension (2.5.29.19).

RETURNS
       If the certificate is a CA a positive value will be returned, or (0)  if  the  certificate
       does  not  have CA flag set.  A negative error code 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.

REPORTING BUGS
       Report bugs to <bug-gnutls@gnu.org>.
       General guidelines for reporting bugs: http://www.gnu.org/gethelp/
       GnuTLS home page: http://www.gnu.org/software/gnutls/

COPYRIGHT
       Copyright (C) 2012 Free Software Foundation, Inc..
       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	info  and
       gnutls programs are properly installed at your site, the command

	      info gnutls

       should  give you access to the complete manual.	As an alternative you may obtain the man-
       ual from:

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

gnutls					      3.1.15	 gnutls_x509_crt_get_basic_constraints(3)
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