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, 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
int * ca pointer to output integer indicating CA status, may be NULL, value is 1 if the certificate CA flag is set, 0 oth- erwise.
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.
DESCRIPTION This function will read the certificate s basic constraints, and return the certificates CA status. It reads the basicConstraints X.509 exten- sion (126.96.36.199).
RETURN VALUE 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.
REPORTING BUGS Report bugs to <email@example.com>. GnuTLS home page: http://www.gnu.org/software/gnutls/ General help using GNU software: http://www.gnu.org/gethelp/
COPYRIGHT 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.
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
should give you access to the complete manual.