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gnutls_x509_crt_get_extension_by_oidgnugnutls_x509_crt_get_extension_by_oid(3)

NAME
       gnutls_x509_crt_get_extension_by_oid - This function returns the speci‐
       fied extension

SYNOPSIS
       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert,	 const
       char  *	oid, int indx, void * buf, size_t * sizeof_buf, unsigned int *
       critical);

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  extensions,  this
		   specifies which to send. Use zero to get the first one.

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

       size_t * sizeof_buf
		   initially holds the size of buf

       unsigned int * critical
		   will be non zero if the extension is marked as critical

DESCRIPTION
       This  function  will  return  the extension specified by the OID in the
       certificate.  The extensions  will  be  returned	 as  binary  data  DER
       encoded, in the provided buffer.

       A negative value may be returned in case of parsing error.  If the cer‐
       tificate	   does	   not	   contain     the     specified     extension
       GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.

REPORTING BUGS
       Report bugs to <bug-gnutls@gnu.org>.

COPYRIGHT
       Copyright © 2004 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

       should give you access to the complete manual.

gnutls				     1.gnutls_x509_crt_get_extension_by_oid(3)

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