NAME
gnutls_x509_crt_get_issuer_dn_by_oid - This function returns the Certificate’s issuer distinguished name
SYNOPSIS
#include <gnutls/x509.h>
int gnutls_x509_crt_get_issuer_dn_by_oid(gnutls_x509_crt_t cert, const char * oid, int indx, unsigned int raw_flag, void * buf, size_t * sizeof_buf);
ARGUMENTS
| gnutls_x509_crt_t cert | 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 RDN, this specifies which to send. Use zero to get the first one. |
| unsigned int raw_flag | If non zero returns the raw DER data of the DN part. |
| void * buf | a pointer to a structure to hold the name (may be null) |
| size_t * sizeof_buf | initially holds the size of buf |
DESCRIPTION
This function will extract the part of the name of the Certificate issuer specified by the given OID. The output, if the raw flag is not used, will be encoded as described in RFC2253. Thus a string that is ASCII or UTF-8 encoded, depending on the certificate data.
Some helper macros with popular OIDs can be found in gnutls/x509.h If raw flag is zero, this function will only return known OIDs as text. Other OIDs will be DER encoded, as described in RFC2253 -- in hex format with a ’#’ prefix. You can check about known OIDs using gnutls_x509_dn_oid_known().
If buf is null then only the size will be filled.
RETURNS
GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough, and in that case the *sizeof_buf will be updated with the required size. On success 0 is returned.
REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>.
COPYRIGHT
Copyright © 2008 Free Software Foundation. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.
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
| info gnutls | |
