gnutls_x509_crt_get_extension_by_oid man page on Slackware

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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 - API function

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 *  buf_size,  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 (0) to get the first one.

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

       size_t * buf_size
		   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.

RETURNS
       On success, GNUTLS_E_SUCCESS (0)	 is  returned,	otherwise  a  negative
       error  code is returned. If the certificate does not contain the speci‐
       fied extension GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be 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 © 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 manual from:

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

gnutls				    3.1gnutls_x509_crt_get_extension_by_oid(3)
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