Provided by: gnutls-doc_3.0.11+really2.12.14-5ubuntu3_all
gnutls_x509_crt_get_dn_by_oid - API function
#include <gnutls/x509.h> int gnutls_x509_crt_get_dn_by_oid(gnutls_x509_crt_t cert, const char * oid, int indx, unsigned int raw_flag, void * buf, size_t * sizeof_buf);
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 where the DN part will be copied (may be null). size_t * sizeof_buf initially holds the size of buf
This function will extract the part of the name of the Certificate subject 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 'using gnutls_x509_dn_oid_known(). If buf is null then only the size will be filled.
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.
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