centos man page for gnutls_certificate_set_retrieve_function2

gnutls_certificate_set_retrieve_function2(3)			      gnutls			      gnutls_certificate_set_retrieve_function2(3)

NAME
       gnutls_certificate_set_retrieve_function2 - API function

SYNOPSIS
       #include <gnutls/abstract.h>

       void gnutls_certificate_set_retrieve_function2(gnutls_certificate_credentials_t cred, gnutls_certificate_retrieve_function2 * func);

ARGUMENTS
       gnutls_certificate_credentials_t cred
		   is a gnutls_certificate_credentials_t structure.

       gnutls_certificate_retrieve_function2 * func
		   is the callback function

DESCRIPTION
       This function sets a callback to be called in order to retrieve the certificate to be used in the handshake.

       The  callback's	function prototype is: int (*callback)(gnutls_session_t, const gnutls_datum_t* req_ca_dn, int nreqs, const gnutls_pk_algo-
       rithm_t* pk_algos, int pk_algos_length, gnutls_pcert_st** pcert, unsigned int *pcert_length, gnutls_privkey_t * pkey);

	req_ca_cert is only used in X.509 certificates.  Contains a list with the CA names that the server considers trusted.  Normally we  should
       send  a	certificate  that  is  signed  by  one	of these CAs. These names are DER encoded. To get a more meaningful value use the function
       gnutls_x509_rdn_get().

	pk_algos contains a list with server's acceptable signature algorithms.  The certificate returned should support the server's given  algo-
       rithms.

	pcert should contain a single certificate and public or a list of them.

	pcert_length is the size of the previous list.

	pkey is the private key.

       If the callback function is provided then gnutls will call it, in the handshake, after the certificate request message has been received.

       In server side pk_algos and req_ca_dn are NULL.

       The  callback  function should set the certificate list to be sent, and return 0 on success. If no certificate was selected then the number
       of certificates should be set to zero. The value (-1) indicates error and the handshake will be terminated.

SINCE
       3.0

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 manual from:

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

gnutls								      3.1.15			      gnutls_certificate_set_retrieve_function2(3)