/*
* Copyright (C) 2011 Collabora Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors: Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
*/
#include <config.h>
#include <telepathy-glib/telepathy-glib.h>
#include <libempathy/empathy-channel-factory.h>
#include <libempathy/empathy-utils.h>
#include <extensions/extensions.h>
#include "empathy-call-observer.h"
#define DEBUG_FLAG EMPATHY_DEBUG_VOIP
#include <libempathy/empathy-debug.h>
struct _EmpathyCallObserverPriv {
TpBaseClient *observer;
/* Ongoing calls, as reffed TpChannels */
GList *channels;
};
/* The Call Observer looks at incoming and outgoing calls, and
* autorejects incoming ones if there are ongoing ones, since
* we don't cope with simultaneous calls quite well yet.
* At some point, we should ask the user if he wants to put the
* current call on hold and answer the incoming one instead,
* see https://bugzilla.gnome.org/show_bug.cgi?id=623348
*/
G_DEFINE_TYPE (EmpathyCallObserver, empathy_call_observer, G_TYPE_OBJECT);
static EmpathyCallObserver * observer_singleton = NULL;
static void
on_channel_closed (TpProxy *proxy,
guint domain,
gint code,
gchar *message,
EmpathyCallObserver *self)
{
DEBUG ("channel %s has been invalidated; stop observing it",
tp_proxy_get_object_path (proxy));
self->priv->channels = g_list_remove (self->priv->channels, proxy);
g_object_unref (proxy);
}
static void
on_cdo_claim_cb (GObject *source_object,
GAsyncResult *result,
gpointer user_data)
{
TpChannelDispatchOperation *cdo;
TpChannel *channel = TP_CHANNEL (user_data);
GError *error = NULL;
cdo = TP_CHANNEL_DISPATCH_OPERATION (source_object);
tp_channel_dispatch_operation_claim_finish (cdo, result, &error);
if (error != NULL)
{
DEBUG ("Could not claim CDO: %s", error->message);
g_error_free (error);
return;
}
tp_channel_leave_async (channel,
TP_CHANNEL_GROUP_CHANGE_REASON_BUSY, "Already in a call",
NULL, NULL);
}
static TpChannel *
find_main_channel (GList *channels)
{
GList *l;
for (l = channels; l != NULL; l = g_list_next (l))
{
TpChannel *channel = l->data;
GQuark channel_type;
if (tp_proxy_get_invalidated (channel) != NULL)
continue;
channel_type = tp_channel_get_channel_type_id (channel);
if (channel_type == TP_IFACE_QUARK_CHANNEL_TYPE_STREAMED_MEDIA)
return channel;
}
return NULL;
}
static gboolean
has_ongoing_calls (EmpathyCallObserver *self)
{
if (self->priv->channels != NULL)
return TRUE;
return FALSE;
}
static void
observe_channels (TpSimpleObserver *observer,
TpAccount *account,
TpConnection *connection,
GList *channels,
TpChannelDispatchOperation *dispatch_operation,
GList *requests,
TpObserveChannelsContext *context,
gpointer user_data)
{
EmpathyCallObserver *self = EMPATHY_CALL_OBSERVER (user_data);
TpChannel *channel;
const GError *error;
channel = find_main_channel (channels);
if (channel == NULL)
{
GError err = { TP_ERRORS, TP_ERROR_INVALID_ARGUMENT,
"Unknown channel type" };
DEBUG ("Didn't find any Call or StreamedMedia channel; ignoring");
tp_observe_channels_context_fail (context, &err);
return;
}
/* Autoreject if there are other ongoing calls */
if (has_ongoing_calls (self))
{
DEBUG ("Autorejecting incoming call since there are others in "
"progress: %s", tp_proxy_get_object_path (channel));
tp_channel_dispatch_operation_claim_async (dispatch_operation,
on_cdo_claim_cb, g_object_ref (channel));
return;
}
if ((error = tp_proxy_get_invalidated (channel)) != NULL)
{
DEBUG ("The channel has already been invalidated: %s",
error->message);
tp_observe_channels_context_fail (context, error);
return;
}
DEBUG ("Observing channel %s", tp_proxy_get_object_path (channel));
tp_g_signal_connect_object (channel, "invalidated",
G_CALLBACK (on_channel_closed), self, 0);
self->priv->channels = g_list_prepend (self->priv->channels,
g_object_ref (channel));
tp_observe_channels_context_accept (context);
}
static GObject *
observer_constructor (GType type,
guint n_props,
GObjectConstructParam *props)
{
GObject *retval;
if (observer_singleton)
{
retval = g_object_ref (observer_singleton);
}
else
{
retval = G_OBJECT_CLASS (empathy_call_observer_parent_class)->constructor
(type, n_props, props);
observer_singleton = EMPATHY_CALL_OBSERVER (retval);
g_object_add_weak_pointer (retval, (gpointer) &observer_singleton);
}
return retval;
}
static void
observer_dispose (GObject *object)
{
EmpathyCallObserver *self = EMPATHY_CALL_OBSERVER (object);
tp_clear_object (&self->priv->observer);
g_list_free_full (self->priv->channels, g_object_unref);
self->priv->channels = NULL;
}
static void
empathy_call_observer_class_init (EmpathyCallObserverClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = observer_dispose;
object_class->constructor = observer_constructor;
g_type_class_add_private (object_class, sizeof (EmpathyCallObserverPriv));
}
static void
empathy_call_observer_init (EmpathyCallObserver *self)
{
EmpathyCallObserverPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
EMPATHY_TYPE_CALL_OBSERVER, EmpathyCallObserverPriv);
TpDBusDaemon *dbus;
EmpathyChannelFactory *factory;
GError *error = NULL;
self->priv = priv;
dbus = tp_dbus_daemon_dup (&error);
if (dbus == NULL)
{
DEBUG ("Failed to get TpDBusDaemon: %s", error->message);
g_error_free (error);
return;
}
self->priv->observer = tp_simple_observer_new (dbus, FALSE,
"Empathy.CallObserver", FALSE,
observe_channels, self, NULL);
factory = empathy_channel_factory_dup ();
tp_base_client_set_channel_factory (self->priv->observer,
TP_CLIENT_CHANNEL_FACTORY (factory));
g_object_unref (factory);
/* Observe StreamedMedia channels */
tp_base_client_take_observer_filter (self->priv->observer,
tp_asv_new (
TP_PROP_CHANNEL_CHANNEL_TYPE, G_TYPE_STRING,
TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA,
TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, G_TYPE_UINT,
TP_HANDLE_TYPE_CONTACT,
NULL));
tp_base_client_set_observer_delay_approvers (self->priv->observer, TRUE);
if (!tp_base_client_register (self->priv->observer, &error))
{
DEBUG ("Failed to register observer: %s", error->message);
g_error_free (error);
}
g_object_unref (dbus);
}
EmpathyCallObserver *
empathy_call_observer_dup_singleton (void)
{
return g_object_new (EMPATHY_TYPE_CALL_OBSERVER, NULL);
}
