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gnutls_x509_crt_get_dn_by_oid(3)	      gnutls		 gnutls_x509_crt_get_dn_by_oid(3)

NAME
       gnutls_x509_crt_get_dn_by_oid - API function

SYNOPSIS
       #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 * buf_size);

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
		   (0) 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 * buf_size
		   initially holds the size of	buf

DESCRIPTION
       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
       RFC4514. 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 (0),
       this function will only return known OIDs as text. Other OIDs  will  be	DER  encoded,  as
       described  in  RFC4514 -- 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. If the  raw_flag is not  specified  the
       output is always null terminated, although the
	buf_size will not include the null character.

RETURNS
       GNUTLS_E_SHORT_MEMORY_BUFFER  if  the provided buffer is not long enough, and in that case
       the  buf_size will be updated with the required	size.  GNUTLS_E_REQUESTED_DATA_NOT_AVAIL-
       ABLE if there are no data in the current index. On success 0 is returned.

REPORTING BUGS
       Report bugs to <bug-gnutls@gnu.org>.
       General guidelines for reporting bugs: http://www.gnu.org/gethelp/
       GnuTLS home page: http://www.gnu.org/software/gnutls/

COPYRIGHT
       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.

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

       should  give you access to the complete manual.	As an alternative you may obtain the man-
       ual from:

	      http://www.gnu.org/software/gnutls/manual/

gnutls					      3.1.15		 gnutls_x509_crt_get_dn_by_oid(3)
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