gnutls_x509_crt_get_extension_info

Section: gnutls (3)
Updated: 2.8.5
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NAME

gnutls_x509_crt_get_extension_info - Get extension id and criticality

SYNOPSIS

#include <gnutls/x509.h>

int gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t cert, int indx, void * oid, size_t * sizeof_oid, int * critical);

ARGUMENTS

gnutls_x509_crt_t cert: should contain a gnutls_x509_crt_t structure
int indx: Specifies which extension OID to send. Use zero to get the first one.
void * oid: a pointer to a structure to hold the OID
size_t * sizeof_oid: initially holds the maximum size of oid, on return holds actual size of oid.
int * critical: output variable with critical flag, may be NULL.

DESCRIPTION

This function will return the requested extension OID in the certificate, and the critical flag for it. The extension OID will be stored as a string in the provided buffer. Use gnutls_x509_crt_get_extension_data() to extract the data.

If the buffer provided is not long enough to hold the output, then *sizeof_oid is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.

RETURNS

On success, GNUTLS_E_SUCCESS (zero) is returned, otherwise an 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 <bug-gnutls@gnu.org>. 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.