static void
gabble_server_sasl_channel_respond (
TpSvcChannelInterfaceSASLAuthentication *channel,
const GArray *in_Response_Data,
DBusGMethodInvocation *context)
{
GabbleServerSaslChannel *self =
GABBLE_SERVER_SASL_CHANNEL (channel);
GString *response_data;
GSimpleAsyncResult *r = self->priv->result;
if (self->priv->sasl_status != TP_SASL_STATUS_IN_PROGRESS)
{
gabble_server_sasl_channel_raise (context, TP_ERROR_NOT_AVAILABLE,
"You can only respond to challenges in state In_Progress, not %u",
self->priv->sasl_status);
DEBUG ("cannot respond: state %u != In_Progress",
self->priv->sasl_status);
return;
}
if (r == NULL)
{
gabble_server_sasl_channel_raise (context, TP_ERROR_NOT_AVAILABLE,
"You already responded to the most recent challenge");
DEBUG ("cannot respond: already responded");
return;
}
g_assert (g_simple_async_result_is_valid (G_ASYNC_RESULT (r),
G_OBJECT (self), gabble_server_sasl_channel_challenge_async));
/* The response might be secret (for PLAIN etc.), and also might
* not be UTF-8 or even text, so we just output the length */
DEBUG ("responding with %u bytes", in_Response_Data->len);
self->priv->result = NULL;
if (in_Response_Data->len > 0)
response_data = g_string_new_len (in_Response_Data->data,
in_Response_Data->len);
else
response_data = NULL;
g_simple_async_result_set_op_res_gpointer (r, response_data,
(GDestroyNotify) wocky_g_string_free);
g_simple_async_result_complete_in_idle (r);
g_object_unref (r);
tp_svc_channel_interface_sasl_authentication_return_from_respond (
context);
}
static void
gabble_auth_manager_start_auth_cb (GObject *channel,
GAsyncResult *result,
gpointer user_data)
{
GObject *self_object = g_async_result_get_source_object (user_data);
GabbleAuthManager *self = GABBLE_AUTH_MANAGER (self_object);
WockyAuthRegistryStartData *start_data = NULL;
GError *error = NULL;
if (gabble_server_sasl_channel_start_auth_finish (
GABBLE_SERVER_SASL_CHANNEL (channel), result, &start_data, &error))
{
if (!tp_strdiff (start_data->mechanism, X_TELEPATHY_PASSWORD))
{
/* restart authentication using our own base class */
g_assert (start_data->initial_response != NULL);
self->priv->falling_back = TRUE;
WOCKY_AUTH_REGISTRY_CLASS (
gabble_auth_manager_parent_class)->start_auth_async_func (
WOCKY_AUTH_REGISTRY (self), self->priv->mechanisms,
self->priv->allow_plain, self->priv->is_secure_channel,
self->priv->username,
start_data->initial_response->str,
self->priv->server,
self->priv->session_id,
gabble_auth_manager_start_fallback_cb, user_data);
/* we've transferred ownership of the result */
goto finally;
}
else
{
g_simple_async_result_set_op_res_gpointer (user_data, start_data,
(GDestroyNotify) wocky_auth_registry_start_data_free);
}
}
else
{
g_simple_async_result_set_from_error (user_data, error);
g_clear_error (&error);
}
g_simple_async_result_complete (user_data);
g_object_unref (user_data);
finally:
g_object_unref (self_object);
}
static void
gabble_server_sasl_channel_finalize (GObject *object)
{
GabbleServerSaslChannel *self = GABBLE_SERVER_SASL_CHANNEL (object);
GabbleServerSaslChannelPrivate *priv = self->priv;
/* a ref is held for the channel's lifetime */
g_assert (tp_base_channel_is_destroyed ((TpBaseChannel *) self));
g_assert (priv->result == NULL);
g_strfreev (priv->available_mechanisms);
g_free (priv->sasl_error);
g_hash_table_unref (priv->sasl_error_details);
if (G_OBJECT_CLASS (gabble_server_sasl_channel_parent_class)->finalize)
G_OBJECT_CLASS (gabble_server_sasl_channel_parent_class)->finalize (object);
}
GabbleServerSaslChannel *
gabble_server_sasl_channel_new (GabbleConnection *conn,
GStrv available_mechanisms,
gboolean secure,
const gchar *session_id)
{
GabbleServerSaslChannel *obj;
g_return_val_if_fail (GABBLE_IS_CONNECTION (conn), NULL);
obj = GABBLE_SERVER_SASL_CHANNEL (
g_object_new (GABBLE_TYPE_SERVER_SASL_CHANNEL,
"connection", conn,
"available-mechanisms", available_mechanisms,
"secure", secure,
NULL));
return obj;
}
static void
gabble_server_sasl_channel_close (TpBaseChannel *channel)
{
GabbleServerSaslChannel *self = GABBLE_SERVER_SASL_CHANNEL (channel);
GabbleServerSaslChannelPrivate *priv = self->priv;
DEBUG ("called on %p", self);
if (priv->result != NULL)
{
GSimpleAsyncResult *r = priv->result;
DEBUG ("closed channel");
priv->result = NULL;
g_simple_async_result_set_error (r, WOCKY_AUTH_ERROR,
WOCKY_AUTH_ERROR_FAILURE,
"%s", "Client aborted authentication.");
g_simple_async_result_complete_in_idle (r);
g_object_unref (r);
}
tp_base_channel_destroyed (channel);
}
static void
gabble_server_sasl_channel_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GabbleServerSaslChannel *chan = GABBLE_SERVER_SASL_CHANNEL (object);
GabbleServerSaslChannelPrivate *priv = chan->priv;
switch (property_id)
{
case PROP_SECURE:
priv->secure = g_value_get_boolean (value);
break;
case PROP_AVAILABLE_MECHANISMS:
priv->available_mechanisms = g_value_dup_boxed (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gabble_server_sasl_channel_abort_sasl (
TpSvcChannelInterfaceSASLAuthentication *channel,
guint in_Reason,
const gchar *in_Debug_Message,
DBusGMethodInvocation *context)
{
GabbleServerSaslChannel *self = GABBLE_SERVER_SASL_CHANNEL (channel);
GSimpleAsyncResult *r = self->priv->result;
guint code;
const gchar *dbus_error;
switch (self->priv->sasl_status)
{
case TP_SASL_STATUS_SERVER_FAILED:
case TP_SASL_STATUS_CLIENT_FAILED:
DEBUG ("ignoring attempt to abort: we already failed");
break;
case TP_SASL_STATUS_SUCCEEDED:
case TP_SASL_STATUS_CLIENT_ACCEPTED:
DEBUG ("cannot abort: client already called AcceptSASL");
gabble_server_sasl_channel_raise (context, TP_ERROR_NOT_AVAILABLE,
"Authentication has already succeeded - too late to abort");
return;
case TP_SASL_STATUS_NOT_STARTED:
case TP_SASL_STATUS_IN_PROGRESS:
case TP_SASL_STATUS_SERVER_SUCCEEDED:
switch (in_Reason)
{
case TP_SASL_ABORT_REASON_INVALID_CHALLENGE:
DEBUG ("invalid challenge (%s)", in_Debug_Message);
code = WOCKY_AUTH_ERROR_INVALID_REPLY;
dbus_error = TP_ERROR_STR_SERVICE_CONFUSED;
break;
case TP_SASL_ABORT_REASON_USER_ABORT:
DEBUG ("user aborted auth (%s)", in_Debug_Message);
code = WOCKY_AUTH_ERROR_FAILURE;
dbus_error = TP_ERROR_STR_CANCELLED;
break;
default:
DEBUG ("unknown reason code %u, treating as User_Abort (%s)",
in_Reason, in_Debug_Message);
code = WOCKY_AUTH_ERROR_FAILURE;
dbus_error = TP_ERROR_STR_CANCELLED;
break;
}
if (r != NULL)
{
self->priv->result = NULL;
/* If Not_Started, we're returning failure from start_auth_async.
* If In_Progress, we might be returning failure from
* challenge_async, if one is outstanding.
* If Server_Succeeded, we're returning failure from success_async.
*/
g_simple_async_result_set_error (r, WOCKY_AUTH_ERROR, code,
"Authentication aborted: %s", in_Debug_Message);
g_simple_async_result_complete_in_idle (r);
g_object_unref (r);
}
change_current_state (self, TP_SASL_STATUS_CLIENT_FAILED,
dbus_error, in_Debug_Message);
break;
default:
g_assert_not_reached ();
}
tp_svc_channel_interface_sasl_authentication_return_from_abort_sasl (
context);
}
static void
gabble_server_sasl_channel_accept_sasl (
TpSvcChannelInterfaceSASLAuthentication *channel,
DBusGMethodInvocation *context)
{
GabbleServerSaslChannel *self = GABBLE_SERVER_SASL_CHANNEL (channel);
GSimpleAsyncResult *r = self->priv->result;
const gchar *message = NULL;
switch (self->priv->sasl_status)
{
case TP_SASL_STATUS_NOT_STARTED:
message = "Authentication has not yet begun (Not_Started)";
break;
case TP_SASL_STATUS_IN_PROGRESS:
/* In this state, the only valid time to call this method is in response
* to a challenge, to indicate that, actually, that challenge was
* additional data for a successful authentication. */
if (r == NULL)
{
message = "In_Progress, but you already responded to the last "
"challenge";
}
else
{
DEBUG ("client says the last challenge was actually final data "
"and has accepted it");
g_assert (g_simple_async_result_is_valid (G_ASYNC_RESULT (r),
G_OBJECT (self), gabble_server_sasl_channel_challenge_async));
change_current_state (self, TP_SASL_STATUS_CLIENT_ACCEPTED, NULL,
NULL);
}
break;
case TP_SASL_STATUS_SERVER_SUCCEEDED:
/* The server has already said yes, and the caller is waiting for
* success_async(), i.e. waiting for the UI to check whether it's
* happy too. AcceptSASL means that it is. */
DEBUG ("client has accepted server's success");
g_assert (g_simple_async_result_is_valid (G_ASYNC_RESULT (r),
G_OBJECT (self), gabble_server_sasl_channel_success_async));
change_current_state (self, TP_SASL_STATUS_SUCCEEDED, NULL, NULL);
break;
case TP_SASL_STATUS_CLIENT_ACCEPTED:
message = "Client already accepted authentication (Client_Accepted)";
break;
case TP_SASL_STATUS_SUCCEEDED:
message = "Authentication already succeeded (Succeeded)";
break;
case TP_SASL_STATUS_SERVER_FAILED:
message = "Authentication has already failed (Server_Failed)";
break;
case TP_SASL_STATUS_CLIENT_FAILED:
message = "Authentication has already been aborted (Client_Failed)";
break;
default:
g_assert_not_reached ();
}
if (message != NULL)
{
DEBUG ("cannot accept SASL: %s", message);
gabble_server_sasl_channel_raise (context, TP_ERROR_NOT_AVAILABLE,
"%s", message);
return;
}
if (r != NULL)
{
/* This is a bit weird - this code is run for two different async
* results. In the In_Progress case, this code results in
* success with the GSimpleAsyncResult's op_res left as NULL, which
* is what Wocky wants for an empty response. In the Server_Succeeded
* response, the async result is just success or error - we succeed. */
self->priv->result = NULL;
/* We want want to complete not in an idle because if we do we
* will hit fd.o#32278. This is safe because we're being called
* from dbus-glib in the main loop. */
g_simple_async_result_complete (r);
g_object_unref (r);
}
tp_svc_channel_interface_sasl_authentication_return_from_accept_sasl (
context);
}
/* When called from start_mechanism, initial_data can be NULL. When called
* from D-Bus as StartMechanismWithData, it can't. */
static void
gabble_server_sasl_channel_start_mechanism_with_data (
TpSvcChannelInterfaceSASLAuthentication *iface,
const gchar *in_Mechanism,
const GArray *in_InitialData,
DBusGMethodInvocation *context)
{
GabbleServerSaslChannel *self = GABBLE_SERVER_SASL_CHANNEL (iface);
GabbleServerSaslChannelPrivate *priv = self->priv;
WockyAuthRegistryStartData *start_data;
GSimpleAsyncResult *r = priv->result;
GString *initial_data = NULL;
if (self->priv->sasl_status != TP_SASL_STATUS_NOT_STARTED)
{
gabble_server_sasl_channel_raise (context, TP_ERROR_NOT_AVAILABLE,
"Mechanisms can only be started in state Not_Started, not %u",
self->priv->sasl_status);
DEBUG ("cannot start: state %u != Not_Started", self->priv->sasl_status);
return;
}
/* NotStarted state is entered by creating the channel: the caller must
* call start_auth_async immediately */
g_assert (r != NULL);
g_assert (g_simple_async_result_is_valid (G_ASYNC_RESULT (r),
G_OBJECT (self), gabble_server_sasl_channel_start_auth_async));
if (tp_strv_contains ((const gchar * const *) priv->available_mechanisms,
in_Mechanism))
{
priv->result = NULL;
if (in_InitialData != NULL)
{
/* The initial data might be secret (for PLAIN etc.), and also might
* not be UTF-8 or even text, so we just output the length */
DEBUG ("Starting %s authentication with %u bytes of initial data",
in_Mechanism, in_InitialData->len);
initial_data = g_string_new_len (in_InitialData->data,
in_InitialData->len);
}
else
{
DEBUG ("Starting %s authentication without initial data",
in_Mechanism);
}
change_current_state (self, TP_SASL_STATUS_IN_PROGRESS, NULL, NULL);
dbus_g_method_return (context);
start_data =
wocky_auth_registry_start_data_new (in_Mechanism, initial_data);
g_simple_async_result_set_op_res_gpointer (r,
start_data, (GDestroyNotify) wocky_auth_registry_start_data_free);
g_simple_async_result_complete_in_idle (r);
g_object_unref (r);
if (initial_data != NULL)
g_string_free (initial_data, TRUE);
}
else
{
DEBUG ("cannot start: %s is not a supported mechanism", in_Mechanism);
gabble_server_sasl_channel_raise (context, TP_ERROR_NOT_IMPLEMENTED,
"Selected mechanism is not available.");
}
}
static void
gabble_server_sasl_channel_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
TpBaseChannel *channel = TP_BASE_CHANNEL (object);
GabbleServerSaslChannel *self =
GABBLE_SERVER_SASL_CHANNEL (object);
GabbleServerSaslChannelPrivate *priv = self->priv;
switch (property_id)
{
case PROP_SASL_STATUS:
g_value_set_uint (value, priv->sasl_status);
break;
case PROP_SASL_ERROR:
g_value_set_string (value, priv->sasl_error);
break;
case PROP_SASL_ERROR_DETAILS:
g_value_set_boxed (value, priv->sasl_error_details);
break;
case PROP_AUTH_METHOD:
g_value_set_static_string (value,
TP_IFACE_CHANNEL_INTERFACE_SASL_AUTHENTICATION);
break;
case PROP_AVAILABLE_MECHANISMS:
g_value_set_boxed (value, priv->available_mechanisms);
break;
case PROP_SECURE:
g_value_set_boolean (value, priv->secure);
break;
case PROP_CAN_TRY_AGAIN:
/* Wocky can't retry SASL authentication (although XMPP can) */
g_value_set_boolean (value, FALSE);
break;
case PROP_HAS_INITIAL_DATA:
/* Yes, XMPP has "initial data" in its SASL */
g_value_set_boolean (value, TRUE);
break;
case PROP_AUTHORIZATION_IDENTITY:
/* As per RFC 3920, the authorization identity for c2s connections
* is the desired JID. We can't use conn_util_get_bare_self_jid at
* this stage of the connection process, because it hasn't been
* initialized yet. */
{
gchar *jid, *username, *stream_server;
g_object_get (tp_base_channel_get_connection (channel),
"username", &username,
"stream-server", &stream_server,
NULL);
jid = g_strconcat (username, "@", stream_server, NULL);
g_free (username);
g_free (stream_server);
g_value_take_string (value, jid);
}
break;
case PROP_DEFAULT_REALM:
/* Like WockySaslDigestMd5, we use the stream server as the default
* realm, for interoperability with servers that fail to supply a
* realm but expect us to have this default. */
g_object_get_property (
G_OBJECT (tp_base_channel_get_connection (channel)), "stream-server",
value);
break;
case PROP_DEFAULT_USERNAME:
/* In practice, XMPP servers normally want us to authenticate as the
* local-part of the JID. */
g_object_get_property (
G_OBJECT (tp_base_channel_get_connection (channel)), "username",
value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}