CentOS 7.0 - man page for gnutls_x509_crt_get_extension_by_oid (centos section 3)
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gnutls_x509_crt_get_extension_by_oid(3) gnutls gnutls_x509_crt_get_extension_by_oid(3)
gnutls_x509_crt_get_extension_by_oid - API function
int gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert, const char * oid, int
indx, void * buf, size_t * buf_size, unsigned int * critical);
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 (0) to get the first one.
void * buf a pointer to a structure to hold the name (may be null)
size_t * buf_size
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 (0) is returned, otherwise a negative 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>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GnuTLS home page: http://www.gnu.org/software/gnutls/
Copyright (C) 2012 Free Software Foundation, Inc..
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, the command
should give you access to the complete manual. As an alternative you may obtain the man-
gnutls 3.1.15 gnutls_x509_crt_get_extension_by_oid(3)
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