gnutls_x509_crt_get_basic_constraints man page on FreeBSD
gnutls_x509_crt_get_basic_constraints - This function returns the cer‐
tificate basic constraints
int gnutls_x509_crt_get_basic_constraints(gnutls_x509_crt_t cert,
unsigned int * critical, int * ca, int * pathlen);
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‐
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
Report bugs to <email@example.com>. GnuTLS home page:
http://www.gnu.org/software/gnutls/ 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,
should give you access to the complete manual.
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