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/***************************************************************************
* Copyright (c) 2009-2010 Open Information Security Foundation
* Copyright (c) 2010-2013 Qualys, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the Qualys, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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.
***************************************************************************/
/**
* @file
* @author Ivan Ristic <ivanr@webkreator.com>
*/
#ifndef HTP_CONNECTION_H
#define HTP_CONNECTION_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* Creates a new connection structure.
*
* @return A new connection structure on success, NULL on memory allocation failure.
*/
htp_conn_t *htp_conn_create(void);
/**
* Closes the connection.
*
* @param[in] conn
* @param[in] timestamp
*/
void htp_conn_close(htp_conn_t *conn, const htp_time_t *timestamp);
/**
* Destroys a connection, as well as all the transactions it contains. It is
* not possible to destroy a connection structure yet leave any of its
* transactions intact. This is because transactions need its connection and
* connection structures hold little data anyway. The opposite is true, though
* it is possible to delete a transaction but leave its connection alive.
*
* @param[in] conn
*/
void htp_conn_destroy(htp_conn_t *conn);
/**
* Opens a connection. This function will essentially only store the provided data
* for future reference. The timestamp parameter is optional.
*
* @param[in] conn
* @param[in] remote_addr
* @param[in] remote_port
* @param[in] local_addr
* @param[in] local_port
* @param[in] timestamp
* @return
*/
htp_status_t htp_conn_open(htp_conn_t *conn, const char *remote_addr, int remote_port,
const char *local_addr, int local_port, const htp_time_t *timestamp);
/**
* Removes the given transaction structure, which makes it possible to
* safely destroy it. It is safe to destroy transactions in this way
* because the index of the transactions (in a connection) is preserved.
*
* @param[in] conn
* @param[in] tx
* @return HTP_OK if transaction was removed (replaced with NULL) or HTP_ERROR if it wasn't found.
*/
htp_status_t htp_conn_remove_tx(htp_conn_t *conn, const htp_tx_t *tx);
/**
* Keeps track of inbound packets and data.
*
* @param[in] conn
* @param[in] len
* @param[in] timestamp
*/
void htp_conn_track_inbound_data(htp_conn_t *conn, size_t len, const htp_time_t *timestamp);
/**
* Keeps track of outbound packets and data.
*
* @param[in] conn
* @param[in] len
* @param[in] timestamp
*/
void htp_conn_track_outbound_data(htp_conn_t *conn, size_t len, const htp_time_t *timestamp);
#ifdef __cplusplus
}
#endif
#endif /* HTP_CONNECTION_H */
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