gstreamer/ext/dtls/gstdtlssrtpbin.c
2020-06-23 12:10:17 -04:00

244 lines
7.7 KiB
C

/*
* Copyright (c) 2014, Ericsson AB. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdtlssrtpbin.h"
#define gst_dtls_srtp_bin_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstDtlsSrtpBin, gst_dtls_srtp_bin, GST_TYPE_BIN);
enum
{
PROP_0,
PROP_CONNECTION_ID,
PROP_KEY,
PROP_SRTP_AUTH,
PROP_SRTP_CIPHER,
PROP_SRTCP_AUTH,
PROP_SRTCP_CIPHER,
NUM_PROPERTIES
};
static GParamSpec *properties[NUM_PROPERTIES];
#define DEFAULT_CONNECTION_ID NULL
#define DEFAULT_KEY NULL
#define DEFAULT_SRTP_AUTH NULL
#define DEFAULT_SRTP_CIPHER NULL
#define DEFAULT_SRTCP_AUTH NULL
#define DEFAULT_SRTCP_CIPHER NULL
static void gst_dtls_srtp_bin_finalize (GObject *);
static void gst_dtls_srtp_bin_set_property (GObject *, guint prop_id,
const GValue *, GParamSpec *);
static void gst_dtls_srtp_bin_get_property (GObject *, guint prop_id,
GValue *, GParamSpec *);
static void
gst_dtls_srtp_bin_class_init (GstDtlsSrtpBinClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_dtls_srtp_bin_finalize);
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_dtls_srtp_bin_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_dtls_srtp_bin_get_property);
klass->remove_dtls_element = NULL;
properties[PROP_CONNECTION_ID] =
g_param_spec_string ("connection-id",
"Connection id",
"Every encoder/decoder pair should have the same, unique, connection-id",
DEFAULT_CONNECTION_ID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_KEY] =
g_param_spec_boxed ("key",
"Key",
"SRTP master key, if this property is set, DTLS will be disabled",
GST_TYPE_BUFFER,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS);
properties[PROP_SRTP_CIPHER] =
g_param_spec_string ("srtp-cipher",
"SRTP Cipher",
"SRTP cipher name, should be 'null' or 'aes-128-icm', "
"if this property is set, DTLS will be disabled",
DEFAULT_SRTP_CIPHER,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS);
properties[PROP_SRTCP_CIPHER] =
g_param_spec_string ("srtcp-cipher",
"SRTCP Cipher",
"SRTCP cipher name, should be 'null' or 'aes-128-icm', "
"if this property is set, DTLS will be disabled",
DEFAULT_SRTCP_CIPHER,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS);
properties[PROP_SRTP_AUTH] =
g_param_spec_string ("srtp-auth",
"SRTP Auth",
"SRTP auth name, should be 'null', 'hmac-sha1-32' or 'hmac-sha1-80', "
"if this property is set, DTLS will be disabled",
DEFAULT_SRTP_AUTH,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS);
properties[PROP_SRTCP_AUTH] =
g_param_spec_string ("srtcp-auth",
"SRTCP Auth",
"SRTCP auth name, should be 'null', 'hmac-sha1-32' or 'hmac-sha1-80', "
"if this property is set, DTLS will be disabled",
DEFAULT_SRTCP_AUTH,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, NUM_PROPERTIES, properties);
gst_type_mark_as_plugin_api (GST_TYPE_DTLS_SRTP_BIN, 0);
}
static void
gst_dtls_srtp_bin_init (GstDtlsSrtpBin * self)
{
self->key = NULL;
self->key_is_set = FALSE;
self->srtp_auth = NULL;
self->srtp_cipher = NULL;
self->srtcp_auth = NULL;
self->srtcp_cipher = NULL;
}
static void
gst_dtls_srtp_bin_finalize (GObject * object)
{
GstDtlsSrtpBin *self = GST_DTLS_SRTP_BIN (object);
if (self->key) {
gst_buffer_unref (self->key);
self->key = NULL;
}
g_free (self->srtp_auth);
self->srtp_auth = NULL;
g_free (self->srtp_cipher);
self->srtp_cipher = NULL;
g_free (self->srtcp_auth);
self->srtcp_auth = NULL;
g_free (self->srtcp_cipher);
self->srtcp_cipher = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_dtls_srtp_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstDtlsSrtpBin *self = GST_DTLS_SRTP_BIN (object);
GstDtlsSrtpBinClass *klass = GST_DTLS_SRTP_BIN_GET_CLASS (self);
switch (prop_id) {
case PROP_CONNECTION_ID:
if (self->dtls_element) {
g_object_set_property (G_OBJECT (self->dtls_element), "connection-id",
value);
} else {
g_warning ("tried to set connection-id after disabling DTLS");
}
break;
case PROP_KEY:
if (self->key) {
gst_buffer_unref (self->key);
}
self->key = g_value_dup_boxed (value);
self->key_is_set = TRUE;
klass->remove_dtls_element (self);
break;
case PROP_SRTP_AUTH:
g_free (self->srtp_auth);
self->srtp_auth = g_value_dup_string (value);
klass->remove_dtls_element (self);
break;
case PROP_SRTP_CIPHER:
g_free (self->srtp_cipher);
self->srtp_cipher = g_value_dup_string (value);
klass->remove_dtls_element (self);
break;
case PROP_SRTCP_AUTH:
g_free (self->srtcp_auth);
self->srtcp_auth = g_value_dup_string (value);
klass->remove_dtls_element (self);
break;
case PROP_SRTCP_CIPHER:
g_free (self->srtcp_cipher);
self->srtcp_cipher = g_value_dup_string (value);
klass->remove_dtls_element (self);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
}
}
static void
gst_dtls_srtp_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstDtlsSrtpBin *self = GST_DTLS_SRTP_BIN (object);
switch (prop_id) {
case PROP_CONNECTION_ID:
if (self->dtls_element) {
g_object_get_property (G_OBJECT (self->dtls_element), "connection-id",
value);
} else {
g_warning ("tried to get connection-id after disabling DTLS");
}
break;
case PROP_KEY:
if (self->key) {
g_value_set_boxed (value, self->key);
}
break;
case PROP_SRTP_AUTH:
g_value_set_string (value, self->srtp_auth);
break;
case PROP_SRTP_CIPHER:
g_value_set_string (value, self->srtp_cipher);
break;
case PROP_SRTCP_AUTH:
g_value_set_string (value, self->srtcp_auth);
break;
case PROP_SRTCP_CIPHER:
g_value_set_string (value, self->srtcp_cipher);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
}
}