Provided by: gnutls-doc_3.6.9-5ubuntu1_all bug

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 type

       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 <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2019 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

       https://www.gnutls.org/manual/