Функции API (API function)
Имя (Name)
gnutls_certificate_set_retrieve_function - API function
Синопсис (Synopsis)
#include <gnutls/gnutls.h>
void
gnutls_certificate_set_retrieve_function(gnutls_certificate_credentials_t
cred, gnutls_certificate_retrieve_function * func);
Аргументы (Arguments)
gnutls_certificate_credentials_t cred
is a gnutls_certificate_credentials_t type.
gnutls_certificate_retrieve_function * func
is the callback function
Описание (Description)
This function sets a callback to be called in order to retrieve
the certificate to be used in the handshake. The callback will
take control only if a certificate is requested by the peer. You
are advised to use gnutls_certificate_set_retrieve_function2()
because it is much more efficient in the processing it requires
from gnutls.
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_retr2_st* st);
req_ca_dn is only used in X.509 certificates. Contains a list
with the CA names that the server considers trusted. This is a
hint and typically the client should send a certificate that is
signed by one of these CAs. These names, when available, 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 public key
algorithms. The certificate returned should support the server's
given algorithms.
st should contain the certificates and private keys.
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. If both
certificates are set in the credentials and a callback is
available, the callback takes predence.
Сообщение об ошибках (Reporting bugs)
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Смотри также (See also)
The full documentation for gnutls is maintained as a Texinfo
manual. If the /usr/share/doc/gnutls/ directory does not contain
the HTML form visit
https://www.gnutls.org/manual/
