static int
init_gnutls_functions (Lisp_Object libraries)
{
HMODULE library;
int max_log_level = 1;
if (!(library = w32_delayed_load (libraries, Qgnutls_dll)))
{
GNUTLS_LOG (1, max_log_level, "GnuTLS library not found");
return 0;
}
LOAD_GNUTLS_FN (library, gnutls_alert_get);
LOAD_GNUTLS_FN (library, gnutls_alert_get_name);
LOAD_GNUTLS_FN (library, gnutls_alert_send_appropriate);
LOAD_GNUTLS_FN (library, gnutls_anon_allocate_client_credentials);
LOAD_GNUTLS_FN (library, gnutls_anon_free_client_credentials);
LOAD_GNUTLS_FN (library, gnutls_bye);
LOAD_GNUTLS_FN (library, gnutls_certificate_allocate_credentials);
LOAD_GNUTLS_FN (library, gnutls_certificate_free_credentials);
LOAD_GNUTLS_FN (library, gnutls_certificate_get_peers);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_verify_flags);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_x509_crl_file);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_x509_key_file);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_x509_trust_file);
LOAD_GNUTLS_FN (library, gnutls_certificate_type_get);
LOAD_GNUTLS_FN (library, gnutls_certificate_verify_peers2);
LOAD_GNUTLS_FN (library, gnutls_credentials_set);
LOAD_GNUTLS_FN (library, gnutls_deinit);
LOAD_GNUTLS_FN (library, gnutls_dh_set_prime_bits);
LOAD_GNUTLS_FN (library, gnutls_error_is_fatal);
LOAD_GNUTLS_FN (library, gnutls_global_init);
LOAD_GNUTLS_FN (library, gnutls_global_set_log_function);
LOAD_GNUTLS_FN (library, gnutls_global_set_log_level);
LOAD_GNUTLS_FN (library, gnutls_global_set_mem_functions);
LOAD_GNUTLS_FN (library, gnutls_handshake);
LOAD_GNUTLS_FN (library, gnutls_init);
LOAD_GNUTLS_FN (library, gnutls_priority_set_direct);
LOAD_GNUTLS_FN (library, gnutls_record_check_pending);
LOAD_GNUTLS_FN (library, gnutls_record_recv);
LOAD_GNUTLS_FN (library, gnutls_record_send);
LOAD_GNUTLS_FN (library, gnutls_strerror);
LOAD_GNUTLS_FN (library, gnutls_transport_set_errno);
LOAD_GNUTLS_FN (library, gnutls_transport_set_lowat);
LOAD_GNUTLS_FN (library, gnutls_transport_set_ptr2);
LOAD_GNUTLS_FN (library, gnutls_transport_set_pull_function);
LOAD_GNUTLS_FN (library, gnutls_transport_set_push_function);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_check_hostname);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_deinit);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_import);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_init);
max_log_level = global_gnutls_log_level;
GNUTLS_LOG2 (1, max_log_level, "GnuTLS library loaded:",
SDATA (Fget (Qgnutls_dll, QCloaded_from)));
return 1;
}
Lisp_Object
emacs_gnutls_deinit (Lisp_Object proc)
{
int log_level;
CHECK_PROCESS (proc);
if (XPROCESS (proc)->gnutls_p == 0)
return Qnil;
log_level = XPROCESS (proc)->gnutls_log_level;
if (XPROCESS (proc)->gnutls_x509_cred)
{
GNUTLS_LOG (2, log_level, "Deallocating x509 credentials");
fn_gnutls_certificate_free_credentials (XPROCESS (proc)->gnutls_x509_cred);
XPROCESS (proc)->gnutls_x509_cred = NULL;
}
if (XPROCESS (proc)->gnutls_anon_cred)
{
GNUTLS_LOG (2, log_level, "Deallocating anon credentials");
fn_gnutls_anon_free_client_credentials (XPROCESS (proc)->gnutls_anon_cred);
XPROCESS (proc)->gnutls_anon_cred = NULL;
}
if (XPROCESS (proc)->gnutls_state)
{
fn_gnutls_deinit (XPROCESS (proc)->gnutls_state);
XPROCESS (proc)->gnutls_state = NULL;
if (GNUTLS_INITSTAGE (proc) >= GNUTLS_STAGE_INIT)
GNUTLS_INITSTAGE (proc) = GNUTLS_STAGE_INIT - 1;
}
XPROCESS (proc)->gnutls_p = 0;
return Qt;
}
EMACS_INT
emacs_gnutls_read (struct Lisp_Process *proc, char *buf, EMACS_INT nbyte)
{
ssize_t rtnval;
gnutls_session_t state = proc->gnutls_state;
int log_level = proc->gnutls_log_level;
if (proc->gnutls_initstage != GNUTLS_STAGE_READY)
{
/* If the handshake count is under the limit, try the handshake
again and increment the handshake count. This count is kept
per process (connection), not globally. */
if (proc->gnutls_handshakes_tried < GNUTLS_EMACS_HANDSHAKES_LIMIT)
{
proc->gnutls_handshakes_tried++;
emacs_gnutls_handshake (proc);
GNUTLS_LOG2i (5, log_level, "Retried handshake",
proc->gnutls_handshakes_tried);
return -1;
}
GNUTLS_LOG (2, log_level, "Giving up on handshake; resetting retries");
proc->gnutls_handshakes_tried = 0;
return 0;
}
rtnval = fn_gnutls_record_recv (state, buf, nbyte);
if (rtnval >= 0)
return rtnval;
else if (rtnval == GNUTLS_E_UNEXPECTED_PACKET_LENGTH)
/* The peer closed the connection. */
return 0;
else if (emacs_gnutls_handle_error (state, rtnval) == 0)
/* non-fatal error */
return -1;
else {
/* a fatal error occurred */
return 0;
}
}
static int
init_gnutls_functions (Lisp_Object libraries)
{
HMODULE library;
int max_log_level = 1;
if (!(library = w32_delayed_load (libraries, Qgnutls_dll)))
{
GNUTLS_LOG (1, max_log_level, "GnuTLS library not found");
return 0;
}
LOAD_GNUTLS_FN (library, gnutls_alert_get);
LOAD_GNUTLS_FN (library, gnutls_alert_get_name);
LOAD_GNUTLS_FN (library, gnutls_alert_send_appropriate);
LOAD_GNUTLS_FN (library, gnutls_anon_allocate_client_credentials);
LOAD_GNUTLS_FN (library, gnutls_anon_free_client_credentials);
LOAD_GNUTLS_FN (library, gnutls_bye);
LOAD_GNUTLS_FN (library, gnutls_certificate_allocate_credentials);
LOAD_GNUTLS_FN (library, gnutls_certificate_free_credentials);
LOAD_GNUTLS_FN (library, gnutls_certificate_get_peers);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_verify_flags);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_x509_crl_file);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_x509_key_file);
LOAD_GNUTLS_FN (library, gnutls_certificate_set_x509_trust_file);
LOAD_GNUTLS_FN (library, gnutls_certificate_type_get);
LOAD_GNUTLS_FN (library, gnutls_certificate_verify_peers2);
LOAD_GNUTLS_FN (library, gnutls_credentials_set);
LOAD_GNUTLS_FN (library, gnutls_deinit);
LOAD_GNUTLS_FN (library, gnutls_dh_set_prime_bits);
LOAD_GNUTLS_FN (library, gnutls_error_is_fatal);
LOAD_GNUTLS_FN (library, gnutls_global_init);
LOAD_GNUTLS_FN (library, gnutls_global_set_log_function);
LOAD_GNUTLS_FN (library, gnutls_global_set_log_level);
LOAD_GNUTLS_FN (library, gnutls_global_set_mem_functions);
LOAD_GNUTLS_FN (library, gnutls_handshake);
LOAD_GNUTLS_FN (library, gnutls_init);
LOAD_GNUTLS_FN (library, gnutls_priority_set_direct);
LOAD_GNUTLS_FN (library, gnutls_record_check_pending);
LOAD_GNUTLS_FN (library, gnutls_record_recv);
LOAD_GNUTLS_FN (library, gnutls_record_send);
LOAD_GNUTLS_FN (library, gnutls_strerror);
LOAD_GNUTLS_FN (library, gnutls_transport_set_errno);
LOAD_GNUTLS_FN (library, gnutls_check_version);
/* We don't need to call gnutls_transport_set_lowat in GnuTLS 2.11.1
and later, and the function was removed entirely in 3.0.0. */
if (!fn_gnutls_check_version ("2.11.1"))
LOAD_GNUTLS_FN (library, gnutls_transport_set_lowat);
LOAD_GNUTLS_FN (library, gnutls_transport_set_ptr2);
LOAD_GNUTLS_FN (library, gnutls_transport_set_pull_function);
LOAD_GNUTLS_FN (library, gnutls_transport_set_push_function);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_check_hostname);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_deinit);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_import);
LOAD_GNUTLS_FN (library, gnutls_x509_crt_init);
max_log_level = global_gnutls_log_level;
{
Lisp_Object name = CAR_SAFE (Fget (Qgnutls_dll, QCloaded_from));
GNUTLS_LOG2 (1, max_log_level, "GnuTLS library loaded:",
STRINGP (name) ? (const char *) SDATA (name) : "unknown");
}
return 1;
}
