CentOS 7.0 - man page for gnutls_certificate_set_retrieve_function2 (centos section 3)
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gnutls_certificate_set_retrieve_function2(3) gnutls gnutls_certificate_set_retrieve_function2(3)
gnutls_certificate_set_retrieve_function2 - API function
void gnutls_certificate_set_retrieve_function2(gnutls_certificate_credentials_t cred,
gnutls_certificate_retrieve_function2 * func);
is a gnutls_certificate_credentials_t structure.
gnutls_certificate_retrieve_function2 * func
is the callback function
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_algorithm_t* pk_algos, int
pk_algos_length, gnutls_pcert_st** pcert, unsigned int *pcert_length, gnutls_privkey_t *
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
pk_algos contains a list with server's acceptable signature algorithms. The certificate
returned should support the server's given algorithms.
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.
Report bugs to <firstname.lastname@example.org>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GnuTLS home page: http://www.gnu.org/software/gnutls/
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.
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
should give you access to the complete manual. As an alternative you may obtain the man-
gnutls 3.1.15 gnutls_certificate_set_retrieve_function2(3)
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