/* Report a GnuTLS error to the user.
Return true if the error code was successfully handled. */
static bool
emacs_gnutls_handle_error (gnutls_session_t session, int err)
{
int max_log_level = 0;
bool ret;
const char *str;
/* TODO: use a Lisp_Object generated by gnutls_make_error? */
if (err >= 0)
return 1;
max_log_level = global_gnutls_log_level;
/* TODO: use gnutls-error-fatalp and gnutls-error-string. */
str = fn_gnutls_strerror (err);
if (!str)
str = "unknown";
if (fn_gnutls_error_is_fatal (err))
{
ret = 0;
GNUTLS_LOG2 (0, max_log_level, "fatal error:", str);
}
else
{
ret = 1;
switch (err)
{
case GNUTLS_E_AGAIN:
GNUTLS_LOG2 (3,
max_log_level,
"retry:",
str);
default:
GNUTLS_LOG2 (1,
max_log_level,
"non-fatal error:",
str);
}
}
if (err == GNUTLS_E_WARNING_ALERT_RECEIVED
|| err == GNUTLS_E_FATAL_ALERT_RECEIVED)
{
int alert = fn_gnutls_alert_get (session);
int level = (err == GNUTLS_E_FATAL_ALERT_RECEIVED) ? 0 : 1;
str = fn_gnutls_alert_get_name (alert);
if (!str)
str = "unknown";
GNUTLS_LOG2 (level, max_log_level, "Received alert: ", str);
}
return ret;
}
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;
}
/* report a GnuTLS error to the user.
Returns zero if the error code was successfully handled. */
static int
emacs_gnutls_handle_error (gnutls_session_t session, int err)
{
int max_log_level = 0;
int ret;
const char *str;
/* TODO: use a Lisp_Object generated by gnutls_make_error? */
if (err >= 0)
return 0;
max_log_level = global_gnutls_log_level;
/* TODO: use gnutls-error-fatalp and gnutls-error-string. */
str = fn_gnutls_strerror (err);
if (!str)
str = "unknown";
if (fn_gnutls_error_is_fatal (err))
{
ret = err;
GNUTLS_LOG2 (0, max_log_level, "fatal error:", str);
}
else
{
ret = 0;
GNUTLS_LOG2 (1, max_log_level, "non-fatal error:", str);
/* TODO: EAGAIN AKA Qgnutls_e_again should be level 2. */
}
if (err == GNUTLS_E_WARNING_ALERT_RECEIVED
|| err == GNUTLS_E_FATAL_ALERT_RECEIVED)
{
int alert = fn_gnutls_alert_get (session);
int level = (err == GNUTLS_E_FATAL_ALERT_RECEIVED) ? 0 : 1;
str = fn_gnutls_alert_get_name (alert);
if (!str)
str = "unknown";
GNUTLS_LOG2 (level, max_log_level, "Received alert: ", str);
}
return ret;
}
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;
}