mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 16:26:39 +00:00
webrtc: Improve robustness of nice agent signal handlers
NiceAgent and it's associated thread is alive for as long as GstWebRTCICE is alive so make sure any signal handlers connected to NiceAgent do not access data that is deleted earlier. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2073>
This commit is contained in:
Johan Sternerup
GStreamer Marge Bot
parent
5ed8e416fe
commit
1842ffc906
4 changed files with 160 additions and 40 deletions
|
|
@ -855,8 +855,12 @@ _clear_ice_stream (struct NiceStreamItem *item)
|
|||
return;
|
||||
|
||||
if (item->stream) {
|
||||
g_signal_handlers_disconnect_by_data (item->stream->ice->priv->nice_agent,
|
||||
item->stream);
|
||||
GstWebRTCICE *ice = g_weak_ref_get (&item->stream->ice_weak);
|
||||
if (ice != NULL) {
|
||||
g_signal_handlers_disconnect_by_data (ice->priv->nice_agent,
|
||||
item->stream);
|
||||
gst_object_unref (ice);
|
||||
}
|
||||
gst_object_unref (item->stream);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -47,6 +47,7 @@ struct _GstWebRTCICEStreamPrivate
|
|||
gboolean gathered;
|
||||
GList *transports;
|
||||
gboolean gathering_started;
|
||||
gulong candidate_gathering_done_id;
|
||||
};
|
||||
|
||||
#define gst_webrtc_ice_stream_parent_class parent_class
|
||||
|
|
@ -63,8 +64,7 @@ gst_webrtc_ice_stream_set_property (GObject * object, guint prop_id,
|
|||
|
||||
switch (prop_id) {
|
||||
case PROP_ICE:
|
||||
/* XXX: weak-ref this? */
|
||||
stream->ice = g_value_get_object (value);
|
||||
g_weak_ref_set (&stream->ice_weak, g_value_get_object (value));
|
||||
break;
|
||||
case PROP_STREAM_ID:
|
||||
stream->stream_id = g_value_get_uint (value);
|
||||
|
|
@ -83,7 +83,7 @@ gst_webrtc_ice_stream_get_property (GObject * object, guint prop_id,
|
|||
|
||||
switch (prop_id) {
|
||||
case PROP_ICE:
|
||||
g_value_set_object (value, stream->ice);
|
||||
g_value_set_object (value, g_weak_ref_get (&stream->ice_weak));
|
||||
break;
|
||||
case PROP_STREAM_ID:
|
||||
g_value_set_uint (value, stream->stream_id);
|
||||
|
|
@ -98,22 +98,42 @@ static void
|
|||
gst_webrtc_ice_stream_finalize (GObject * object)
|
||||
{
|
||||
GstWebRTCICEStream *stream = GST_WEBRTC_ICE_STREAM (object);
|
||||
GstWebRTCICE *ice = g_weak_ref_get (&stream->ice_weak);
|
||||
|
||||
if (ice) {
|
||||
NiceAgent *agent;
|
||||
g_object_get (ice, "agent", &agent, NULL);
|
||||
|
||||
if (stream->priv->candidate_gathering_done_id != 0) {
|
||||
g_signal_handler_disconnect (agent,
|
||||
stream->priv->candidate_gathering_done_id);
|
||||
}
|
||||
|
||||
g_object_unref (agent);
|
||||
gst_object_unref (ice);
|
||||
}
|
||||
|
||||
g_list_free (stream->priv->transports);
|
||||
stream->priv->transports = NULL;
|
||||
|
||||
g_weak_ref_clear (&stream->ice_weak);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static void
|
||||
_on_candidate_gathering_done (NiceAgent * agent, guint stream_id,
|
||||
GstWebRTCICEStream * ice)
|
||||
GWeakRef * ice_weak)
|
||||
{
|
||||
GstWebRTCICEStream *ice = g_weak_ref_get (ice_weak);
|
||||
GList *l;
|
||||
|
||||
if (stream_id != ice->stream_id)
|
||||
if (!ice)
|
||||
return;
|
||||
|
||||
if (stream_id != ice->stream_id)
|
||||
goto cleanup;
|
||||
|
||||
GST_DEBUG_OBJECT (ice, "%u gathering done", stream_id);
|
||||
|
||||
ice->priv->gathered = TRUE;
|
||||
|
|
@ -124,6 +144,9 @@ _on_candidate_gathering_done (NiceAgent * agent, guint stream_id,
|
|||
gst_webrtc_ice_transport_gathering_state_change (ice,
|
||||
GST_WEBRTC_ICE_GATHERING_STATE_COMPLETE);
|
||||
}
|
||||
|
||||
cleanup:
|
||||
gst_object_unref (ice);
|
||||
}
|
||||
|
||||
GstWebRTCICETransport *
|
||||
|
|
@ -152,17 +175,36 @@ gst_webrtc_ice_stream_find_transport (GstWebRTCICEStream * stream,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static GWeakRef *
|
||||
weak_new (GstWebRTCICEStream * stream)
|
||||
{
|
||||
GWeakRef *weak = g_new0 (GWeakRef, 1);
|
||||
g_weak_ref_init (weak, stream);
|
||||
return weak;
|
||||
}
|
||||
|
||||
static void
|
||||
weak_free (GWeakRef * weak)
|
||||
{
|
||||
g_weak_ref_clear (weak);
|
||||
g_free (weak);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_webrtc_ice_stream_constructed (GObject * object)
|
||||
{
|
||||
GstWebRTCICEStream *stream = GST_WEBRTC_ICE_STREAM (object);
|
||||
NiceAgent *agent;
|
||||
GstWebRTCICE *ice = g_weak_ref_get (&stream->ice_weak);
|
||||
|
||||
g_object_get (stream->ice, "agent", &agent, NULL);
|
||||
g_signal_connect (agent, "candidate-gathering-done",
|
||||
G_CALLBACK (_on_candidate_gathering_done), stream);
|
||||
g_assert (ice != NULL);
|
||||
g_object_get (ice, "agent", &agent, NULL);
|
||||
stream->priv->candidate_gathering_done_id = g_signal_connect_data (agent,
|
||||
"candidate-gathering-done", G_CALLBACK (_on_candidate_gathering_done),
|
||||
weak_new (stream), (GClosureNotify) weak_free, (GConnectFlags) 0);
|
||||
|
||||
g_object_unref (agent);
|
||||
gst_object_unref (ice);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->constructed (object);
|
||||
}
|
||||
|
|
@ -172,6 +214,8 @@ gst_webrtc_ice_stream_gather_candidates (GstWebRTCICEStream * stream)
|
|||
{
|
||||
NiceAgent *agent;
|
||||
GList *l;
|
||||
GstWebRTCICE *ice;
|
||||
gboolean ret = TRUE;
|
||||
|
||||
g_return_val_if_fail (GST_IS_WEBRTC_ICE_STREAM (stream), FALSE);
|
||||
|
||||
|
|
@ -187,28 +231,31 @@ gst_webrtc_ice_stream_gather_candidates (GstWebRTCICEStream * stream)
|
|||
GST_WEBRTC_ICE_GATHERING_STATE_GATHERING);
|
||||
}
|
||||
|
||||
g_object_get (stream->ice, "agent", &agent, NULL);
|
||||
ice = g_weak_ref_get (&stream->ice_weak);
|
||||
g_assert (ice != NULL);
|
||||
|
||||
g_object_get (ice, "agent", &agent, NULL);
|
||||
|
||||
if (!stream->priv->gathering_started) {
|
||||
if (stream->ice->min_rtp_port != 0 || stream->ice->max_rtp_port != 65535) {
|
||||
if (stream->ice->min_rtp_port > stream->ice->max_rtp_port) {
|
||||
GST_ERROR_OBJECT (stream->ice,
|
||||
if (ice->min_rtp_port != 0 || ice->max_rtp_port != 65535) {
|
||||
if (ice->min_rtp_port > ice->max_rtp_port) {
|
||||
GST_ERROR_OBJECT (ice,
|
||||
"invalid port range: min-rtp-port %d must be <= max-rtp-port %d",
|
||||
stream->ice->min_rtp_port, stream->ice->max_rtp_port);
|
||||
return FALSE;
|
||||
ice->min_rtp_port, ice->max_rtp_port);
|
||||
ret = FALSE;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
nice_agent_set_port_range (agent, stream->stream_id,
|
||||
NICE_COMPONENT_TYPE_RTP, stream->ice->min_rtp_port,
|
||||
stream->ice->max_rtp_port);
|
||||
NICE_COMPONENT_TYPE_RTP, ice->min_rtp_port, ice->max_rtp_port);
|
||||
}
|
||||
/* mark as gathering started to prevent changing ports again */
|
||||
stream->priv->gathering_started = TRUE;
|
||||
}
|
||||
|
||||
if (!nice_agent_gather_candidates (agent, stream->stream_id)) {
|
||||
g_object_unref (agent);
|
||||
return FALSE;
|
||||
ret = FALSE;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
for (l = stream->priv->transports; l; l = l->next) {
|
||||
|
|
@ -217,8 +264,13 @@ gst_webrtc_ice_stream_gather_candidates (GstWebRTCICEStream * stream)
|
|||
gst_webrtc_nice_transport_update_buffer_size (trans);
|
||||
}
|
||||
|
||||
g_object_unref (agent);
|
||||
return TRUE;
|
||||
cleanup:
|
||||
if (agent)
|
||||
g_object_unref (agent);
|
||||
if (ice)
|
||||
gst_object_unref (ice);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -247,9 +299,11 @@ gst_webrtc_ice_stream_class_init (GstWebRTCICEStreamClass * klass)
|
|||
}
|
||||
|
||||
static void
|
||||
gst_webrtc_ice_stream_init (GstWebRTCICEStream * ice)
|
||||
gst_webrtc_ice_stream_init (GstWebRTCICEStream * stream)
|
||||
{
|
||||
ice->priv = gst_webrtc_ice_stream_get_instance_private (ice);
|
||||
stream->priv = gst_webrtc_ice_stream_get_instance_private (stream);
|
||||
|
||||
g_weak_ref_init (&stream->ice_weak, NULL);
|
||||
}
|
||||
|
||||
GstWebRTCICEStream *
|
||||
|
|
|
|||
|
|
@ -40,7 +40,7 @@ struct _GstWebRTCICEStream
|
|||
{
|
||||
GstObject parent;
|
||||
|
||||
GstWebRTCICE *ice;
|
||||
GWeakRef ice_weak;
|
||||
|
||||
guint stream_id;
|
||||
|
||||
|
|
|
|||
|
|
@ -51,6 +51,8 @@ struct _GstWebRTCNiceTransportPrivate
|
|||
|
||||
gint send_buffer_size;
|
||||
gint receive_buffer_size;
|
||||
gulong on_new_selected_pair_id;
|
||||
gulong on_component_state_changed_id;
|
||||
};
|
||||
|
||||
#define gst_webrtc_nice_transport_parent_class parent_class
|
||||
|
|
@ -162,6 +164,24 @@ static void
|
|||
gst_webrtc_nice_transport_finalize (GObject * object)
|
||||
{
|
||||
GstWebRTCNiceTransport *nice = GST_WEBRTC_NICE_TRANSPORT (object);
|
||||
NiceAgent *agent;
|
||||
GstWebRTCICE *webrtc_ice = g_weak_ref_get (&nice->stream->ice_weak);
|
||||
|
||||
if (webrtc_ice) {
|
||||
g_object_get (webrtc_ice, "agent", &agent, NULL);
|
||||
|
||||
if (nice->priv->on_component_state_changed_id != 0) {
|
||||
g_signal_handler_disconnect (agent,
|
||||
nice->priv->on_component_state_changed_id);
|
||||
}
|
||||
|
||||
if (nice->priv->on_new_selected_pair_id != 0) {
|
||||
g_signal_handler_disconnect (agent, nice->priv->on_new_selected_pair_id);
|
||||
}
|
||||
|
||||
g_object_unref (agent);
|
||||
gst_object_unref (webrtc_ice);
|
||||
}
|
||||
|
||||
gst_object_unref (nice->stream);
|
||||
|
||||
|
|
@ -174,13 +194,17 @@ gst_webrtc_nice_transport_update_buffer_size (GstWebRTCNiceTransport * nice)
|
|||
NiceAgent *agent = NULL;
|
||||
GPtrArray *sockets;
|
||||
guint i;
|
||||
GstWebRTCICE *webrtc_ice = g_weak_ref_get (&nice->stream->ice_weak);
|
||||
|
||||
g_object_get (nice->stream->ice, "agent", &agent, NULL);
|
||||
g_assert (webrtc_ice != NULL);
|
||||
|
||||
g_object_get (webrtc_ice, "agent", &agent, NULL);
|
||||
g_assert (agent != NULL);
|
||||
|
||||
sockets = nice_agent_get_sockets (agent, nice->stream->stream_id, 1);
|
||||
if (sockets == NULL) {
|
||||
g_object_unref (agent);
|
||||
gst_object_unref (webrtc_ice);
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
@ -209,49 +233,82 @@ gst_webrtc_nice_transport_update_buffer_size (GstWebRTCNiceTransport * nice)
|
|||
}
|
||||
g_ptr_array_unref (sockets);
|
||||
g_object_unref (agent);
|
||||
gst_object_unref (webrtc_ice);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
_on_new_selected_pair (NiceAgent * agent, guint stream_id,
|
||||
NiceComponentType component, NiceCandidate * lcandidate,
|
||||
NiceCandidate * rcandidate, GstWebRTCNiceTransport * nice)
|
||||
NiceCandidate * rcandidate, GWeakRef * nice_weak)
|
||||
{
|
||||
GstWebRTCICETransport *ice = GST_WEBRTC_ICE_TRANSPORT (nice);
|
||||
GstWebRTCNiceTransport *nice = g_weak_ref_get (nice_weak);
|
||||
GstWebRTCICETransport *ice;
|
||||
GstWebRTCICEComponent comp = _nice_component_to_gst (component);
|
||||
guint our_stream_id;
|
||||
|
||||
if (!nice)
|
||||
return;
|
||||
|
||||
ice = GST_WEBRTC_ICE_TRANSPORT (nice);
|
||||
|
||||
g_object_get (nice->stream, "stream-id", &our_stream_id, NULL);
|
||||
|
||||
if (stream_id != our_stream_id)
|
||||
return;
|
||||
goto cleanup;
|
||||
if (comp != ice->component)
|
||||
return;
|
||||
goto cleanup;
|
||||
|
||||
gst_webrtc_ice_transport_selected_pair_change (ice);
|
||||
|
||||
cleanup:
|
||||
gst_object_unref (nice);
|
||||
}
|
||||
|
||||
static void
|
||||
_on_component_state_changed (NiceAgent * agent, guint stream_id,
|
||||
NiceComponentType component, NiceComponentState state,
|
||||
GstWebRTCNiceTransport * nice)
|
||||
NiceComponentType component, NiceComponentState state, GWeakRef * nice_weak)
|
||||
{
|
||||
GstWebRTCICETransport *ice = GST_WEBRTC_ICE_TRANSPORT (nice);
|
||||
GstWebRTCNiceTransport *nice = g_weak_ref_get (nice_weak);
|
||||
GstWebRTCICETransport *ice;
|
||||
GstWebRTCICEComponent comp = _nice_component_to_gst (component);
|
||||
guint our_stream_id;
|
||||
|
||||
if (!nice)
|
||||
return;
|
||||
|
||||
ice = GST_WEBRTC_ICE_TRANSPORT (nice);
|
||||
|
||||
g_object_get (nice->stream, "stream-id", &our_stream_id, NULL);
|
||||
|
||||
if (stream_id != our_stream_id)
|
||||
return;
|
||||
goto cleanup;
|
||||
if (comp != ice->component)
|
||||
return;
|
||||
goto cleanup;
|
||||
|
||||
GST_DEBUG_OBJECT (ice, "%u %u %s", stream_id, component,
|
||||
nice_component_state_to_string (state));
|
||||
|
||||
gst_webrtc_ice_transport_connection_state_change (ice,
|
||||
_nice_component_state_to_gst (state));
|
||||
|
||||
cleanup:
|
||||
gst_object_unref (nice);
|
||||
}
|
||||
|
||||
static GWeakRef *
|
||||
weak_new (GstWebRTCNiceTransport * nice)
|
||||
{
|
||||
GWeakRef *weak = g_new0 (GWeakRef, 1);
|
||||
g_weak_ref_init (weak, nice);
|
||||
return weak;
|
||||
}
|
||||
|
||||
static void
|
||||
weak_free (GWeakRef * weak)
|
||||
{
|
||||
g_weak_ref_clear (weak);
|
||||
g_free (weak);
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -263,19 +320,23 @@ gst_webrtc_nice_transport_constructed (GObject * object)
|
|||
gboolean controlling_mode;
|
||||
guint our_stream_id;
|
||||
NiceAgent *agent;
|
||||
GstWebRTCICE *webrtc_ice = g_weak_ref_get (&nice->stream->ice_weak);
|
||||
|
||||
g_assert (webrtc_ice != NULL);
|
||||
g_object_get (nice->stream, "stream-id", &our_stream_id, NULL);
|
||||
g_object_get (nice->stream->ice, "agent", &agent, NULL);
|
||||
g_object_get (webrtc_ice, "agent", &agent, NULL);
|
||||
|
||||
g_object_get (agent, "controlling-mode", &controlling_mode, NULL);
|
||||
ice->role =
|
||||
controlling_mode ? GST_WEBRTC_ICE_ROLE_CONTROLLING :
|
||||
GST_WEBRTC_ICE_ROLE_CONTROLLED;
|
||||
|
||||
g_signal_connect (agent, "component-state-changed",
|
||||
G_CALLBACK (_on_component_state_changed), nice);
|
||||
g_signal_connect (agent, "new-selected-pair-full",
|
||||
G_CALLBACK (_on_new_selected_pair), nice);
|
||||
nice->priv->on_component_state_changed_id = g_signal_connect_data (agent,
|
||||
"component-state-changed", G_CALLBACK (_on_component_state_changed),
|
||||
weak_new (nice), (GClosureNotify) weak_free, (GConnectFlags) 0);
|
||||
nice->priv->on_new_selected_pair_id = g_signal_connect_data (agent,
|
||||
"new-selected-pair-full", G_CALLBACK (_on_new_selected_pair),
|
||||
weak_new (nice), (GClosureNotify) weak_free, (GConnectFlags) 0);
|
||||
|
||||
ice->src = gst_element_factory_make ("nicesrc", NULL);
|
||||
if (ice->src) {
|
||||
|
|
@ -290,6 +351,7 @@ gst_webrtc_nice_transport_constructed (GObject * object)
|
|||
}
|
||||
|
||||
g_object_unref (agent);
|
||||
gst_object_unref (webrtc_ice);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->constructed (object);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue