gnutls_x509_crt_get_extension_data(3)

NAME
gnutls_x509_crt_get_extension_data - API function

SYNOPSIS
#include <gnutls/x509.h>

int gnutls_x509_crt_get_extension_data(gnutls_x509_crt_t cert, unsigned indx, void * data, size_t * sizeof_data);

ARGUMENTS

gnutls_x509_crt_t cert
    should contain a gnutls_x509_crt_t type

unsigned indx
    Specifies which extension OID to send. Use (0) to get the first one.

void * data
    a pointer to a structure to hold the data (may be null)

size_t * sizeof_data
    initially holds the size of data

DESCRIPTION
This function will return the requested extension data in the certificate. The extension data will be stored in the provided buffer. Use gnutls_x509_crt_get_extension_info() to extract the OID and critical flag. Use gnutls_x509_crt_get_extension_by_oid() instead, if you want to get data indexed by the extension OID rather than sequence.

RETURNS
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned. If you have reached the last extension available 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/