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/*
* Copyright (c) 2014, Ericsson AB. 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.
*/
#ifndef gstdtlsconnection_h
#define gstdtlsconnection_h
#include <glib-object.h>
G_BEGIN_DECLS
#define ER_TYPE_DTLS_CONNECTION (er_dtls_connection_get_type())
#define ER_DTLS_CONNECTION(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), ER_TYPE_DTLS_CONNECTION, ErDtlsConnection))
#define ER_DTLS_CONNECTION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), ER_TYPE_DTLS_CONNECTION, ErDtlsConnectionClass))
#define ER_IS_DTLS_CONNECTION(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), ER_TYPE_DTLS_CONNECTION))
#define ER_IS_DTLS_CONNECTION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), ER_TYPE_DTLS_CONNECTION))
#define ER_DTLS_CONNECTION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), ER_TYPE_DTLS_CONNECTION, ErDtlsConnectionClass))
typedef struct _ErDtlsConnection ErDtlsConnection;
typedef struct _ErDtlsConnectionClass ErDtlsConnectionClass;
typedef struct _ErDtlsConnectionPrivate ErDtlsConnectionPrivate;
/**
* ErDtlsSrtpCipher:
* @ER_DTLS_SRTP_CIPHER_AES_128_ICM: aes-128-icm
*
* SRTP Cipher selected by the DTLS handshake, should match the enums in gstsrtp
*/
typedef enum {
ER_DTLS_SRTP_CIPHER_AES_128_ICM = 1
} ErDtlsSrtpCipher;
/**
* ErDtlsSrtpAuth:
* @ER_DTLS_SRTP_AUTH_HMAC_SHA1_32: hmac-sha1-32
* @ER_DTLS_SRTP_AUTH_HMAC_SHA1_80: hmac-sha1-80
*
* SRTP Auth selected by the DTLS handshake, should match the enums in gstsrtp
*/
typedef enum {
ER_DTLS_SRTP_AUTH_HMAC_SHA1_32 = 1,
ER_DTLS_SRTP_AUTH_HMAC_SHA1_80 = 2
} ErDtlsSrtpAuth;
#define ER_DTLS_SRTP_MASTER_KEY_LENGTH 30
/*
* ErDtlsConnection:
*
* A class that handles a single DTLS connection.
* Any connection needs to be created with the agent property set.
* Once the DTLS handshake is completed, on-encoder-key and on-decoder-key will be signalled.
*/
struct _ErDtlsConnection {
GObject parent_instance;
ErDtlsConnectionPrivate *priv;
};
struct _ErDtlsConnectionClass {
GObjectClass parent_class;
};
GType er_dtls_connection_get_type(void) G_GNUC_CONST;
void er_dtls_connection_start(ErDtlsConnection *, gboolean is_client);
void er_dtls_connection_start_timeout(ErDtlsConnection *);
/*
* Stops the connections, it is not required to call this function.
*/
void er_dtls_connection_stop(ErDtlsConnection *);
/*
* Closes the connection, the function will block until the connection has been stopped.
* If stop is called some time before, close will return instantly.
*/
void er_dtls_connection_close(ErDtlsConnection *);
/*
* Sets the closure that will be called whenever data needs to be sent.
*
* The closure will get called with the following arguments:
* void cb(ErDtlsConnection *, gpointer data, gint length, gpointer user_data)
*/
void er_dtls_connection_set_send_callback(ErDtlsConnection *, GClosure *);
/*
* Processes data that has been recevied, the transformation is done in-place.
* Returns the length of the plaintext data that was decoded, if no data is available, 0<= will be returned.
*/
gint er_dtls_connection_process(ErDtlsConnection *, gpointer ptr, gint len);
/*
* If the DTLS handshake is completed this function will encode the given data.
* Returns the length of the data sent, or 0 if the DTLS handshake is not completed.
*/
gint er_dtls_connection_send(ErDtlsConnection *, gpointer ptr, gint len);
G_END_DECLS
#endif /* gstdtlsconnection_h */
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