| /* GStreamer |
| * Copyright (C) 2017 Matthew Waters <matthew@centricular.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library 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. |
| */ |
| |
| /** |
| * SECTION:gstwebrtc-dtlstransport |
| * @short_description: RTCDtlsTransport object |
| * @title: GstWebRTCDTLSTransport |
| * @see_also: #GstWebRTCRTPSender, #GstWebRTCRTPReceiver, #GstWebRTCICETransport |
| * |
| * <ulink url="https://www.w3.org/TR/webrtc/#rtcdtlstransport">https://www.w3.org/TR/webrtc/#rtcdtlstransport</ulink> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include "config.h" |
| #endif |
| |
| #include "dtlstransport.h" |
| |
| #define GST_CAT_DEFAULT gst_webrtc_dtls_transport_debug |
| GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); |
| |
| #define gst_webrtc_dtls_transport_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstWebRTCDTLSTransport, gst_webrtc_dtls_transport, |
| GST_TYPE_OBJECT, GST_DEBUG_CATEGORY_INIT (gst_webrtc_dtls_transport_debug, |
| "dtlstransport", 0, "dtlstransport"); |
| ); |
| |
| enum |
| { |
| SIGNAL_0, |
| LAST_SIGNAL, |
| }; |
| |
| enum |
| { |
| PROP_0, |
| PROP_SESSION_ID, |
| PROP_TRANSPORT, |
| PROP_STATE, |
| PROP_CLIENT, |
| PROP_CERTIFICATE, |
| PROP_REMOTE_CERTIFICATE, |
| PROP_RTCP, |
| }; |
| |
| void |
| gst_webrtc_dtls_transport_set_transport (GstWebRTCDTLSTransport * transport, |
| GstWebRTCICETransport * ice) |
| { |
| g_return_if_fail (GST_IS_WEBRTC_DTLS_TRANSPORT (transport)); |
| g_return_if_fail (GST_IS_WEBRTC_ICE_TRANSPORT (ice)); |
| |
| GST_OBJECT_LOCK (transport); |
| gst_object_replace ((GstObject **) & transport->transport, GST_OBJECT (ice)); |
| GST_OBJECT_UNLOCK (transport); |
| } |
| |
| static void |
| gst_webrtc_dtls_transport_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); |
| |
| switch (prop_id) { |
| case PROP_SESSION_ID: |
| webrtc->session_id = g_value_get_uint (value); |
| break; |
| case PROP_CLIENT: |
| g_object_set_property (G_OBJECT (webrtc->dtlssrtpenc), "is-client", |
| value); |
| gst_element_set_locked_state (webrtc->dtlssrtpenc, FALSE); |
| gst_element_sync_state_with_parent (webrtc->dtlssrtpenc); |
| break; |
| case PROP_CERTIFICATE: |
| g_object_set_property (G_OBJECT (webrtc->dtlssrtpdec), "pem", value); |
| break; |
| case PROP_RTCP: |
| webrtc->is_rtcp = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_webrtc_dtls_transport_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); |
| |
| switch (prop_id) { |
| case PROP_SESSION_ID: |
| g_value_set_uint (value, webrtc->session_id); |
| break; |
| case PROP_TRANSPORT: |
| g_value_set_object (value, webrtc->transport); |
| break; |
| case PROP_STATE: |
| g_value_set_enum (value, webrtc->state); |
| break; |
| case PROP_CLIENT: |
| g_object_get_property (G_OBJECT (webrtc->dtlssrtpenc), "is-client", |
| value); |
| break; |
| case PROP_CERTIFICATE: |
| g_object_get_property (G_OBJECT (webrtc->dtlssrtpdec), "pem", value); |
| break; |
| case PROP_REMOTE_CERTIFICATE: |
| g_object_get_property (G_OBJECT (webrtc->dtlssrtpdec), "peer-pem", value); |
| break; |
| case PROP_RTCP: |
| g_value_set_boolean (value, webrtc->is_rtcp); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_webrtc_dtls_transport_finalize (GObject * object) |
| { |
| GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); |
| |
| if (webrtc->transport) { |
| gst_object_unref (webrtc->transport); |
| } |
| webrtc->transport = NULL; |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static void |
| gst_webrtc_dtls_transport_constructed (GObject * object) |
| { |
| GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); |
| gchar *connection_id; |
| |
| /* XXX: this may collide with another connection_id however this is only a |
| * problem if multiple dtls element sets are being used within the same |
| * process */ |
| connection_id = g_strdup_printf ("%s_%u_%u", webrtc->is_rtcp ? "rtcp" : "rtp", |
| webrtc->session_id, g_random_int ()); |
| |
| webrtc->dtlssrtpenc = gst_element_factory_make ("dtlssrtpenc", NULL); |
| g_object_set (webrtc->dtlssrtpenc, "connection-id", connection_id, |
| "is-client", webrtc->client, NULL); |
| |
| webrtc->dtlssrtpdec = gst_element_factory_make ("dtlssrtpdec", NULL); |
| g_object_set (webrtc->dtlssrtpdec, "connection-id", connection_id, NULL); |
| g_free (connection_id); |
| |
| G_OBJECT_CLASS (parent_class)->constructed (object); |
| } |
| |
| static void |
| gst_webrtc_dtls_transport_class_init (GstWebRTCDTLSTransportClass * klass) |
| { |
| GObjectClass *gobject_class = (GObjectClass *) klass; |
| |
| gobject_class->constructed = gst_webrtc_dtls_transport_constructed; |
| gobject_class->get_property = gst_webrtc_dtls_transport_get_property; |
| gobject_class->set_property = gst_webrtc_dtls_transport_set_property; |
| gobject_class->finalize = gst_webrtc_dtls_transport_finalize; |
| |
| g_object_class_install_property (gobject_class, |
| PROP_SESSION_ID, |
| g_param_spec_uint ("session-id", "Session ID", |
| "Unique session ID", 0, G_MAXUINT, 0, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, |
| PROP_TRANSPORT, |
| g_param_spec_object ("transport", "ICE transport", |
| "ICE transport used by this dtls transport", |
| GST_TYPE_WEBRTC_ICE_TRANSPORT, |
| G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| |
| /* FIXME: implement */ |
| g_object_class_install_property (gobject_class, |
| PROP_STATE, |
| g_param_spec_enum ("state", "DTLS state", |
| "State of the DTLS transport", |
| GST_TYPE_WEBRTC_DTLS_TRANSPORT_STATE, |
| GST_WEBRTC_DTLS_TRANSPORT_STATE_NEW, |
| G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, |
| PROP_CLIENT, |
| g_param_spec_boolean ("client", "DTLS client", |
| "Are we the client in the DTLS handshake?", FALSE, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, |
| PROP_CERTIFICATE, |
| g_param_spec_string ("certificate", "DTLS certificate", |
| "DTLS certificate", NULL, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, |
| PROP_REMOTE_CERTIFICATE, |
| g_param_spec_string ("remote-certificate", "Remote DTLS certificate", |
| "Remote DTLS certificate", NULL, |
| G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, |
| PROP_RTCP, |
| g_param_spec_boolean ("rtcp", "RTCP", |
| "The transport is being used solely for RTCP", FALSE, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); |
| } |
| |
| static void |
| gst_webrtc_dtls_transport_init (GstWebRTCDTLSTransport * webrtc) |
| { |
| } |
| |
| GstWebRTCDTLSTransport * |
| gst_webrtc_dtls_transport_new (guint session_id, gboolean is_rtcp) |
| { |
| return g_object_new (GST_TYPE_WEBRTC_DTLS_TRANSPORT, "session-id", session_id, |
| "rtcp", is_rtcp, NULL); |
| } |