gnutls_x509_crt_get_extension_by_oid man page on FreeBSD
gnutls_x509_crt_get_extension_by_oid - This function returns the speci‐
int gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert, const
char * oid, int indx, void * buf, size_t * sizeof_buf, unsigned int *
should contain a gnutls_x509_crt_t structure
const char * oid
holds an Object Identified in null terminated string
int indx In case multiple same OIDs exist in the extensions, this
specifies which to send. Use zero to get the first one.
void * buf a pointer to a structure to hold the name (may be null)
size_t * sizeof_buf
initially holds the size of buf
unsigned int * critical
will be non zero if the extension is marked as critical
This function will return the extension specified by the OID in the
certificate. The extensions will be returned as binary data DER
encoded, in the provided buffer.
On success, GNUTLS_E_SUCCESS (zero) is returned, otherwise an error
code is returned. If the certificate does not contain the specified
extension GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
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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