gnutls_x509_crt_get_basic_constraints(3) — Linux manual page
gnutls_x509_...c_constraints(3) gnutls gnutls_x509_...c_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 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 © 2001-2023 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/
COLOPHON
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