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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>
*/
#include "htp_config_auto.h"
#include "htp_private.h"
htp_conn_t *htp_conn_create(void) {
htp_conn_t *conn = calloc(1, sizeof (htp_conn_t));
if (conn == NULL) return NULL;
conn->transactions = htp_list_create(16);
if (conn->transactions == NULL) {
free(conn);
return NULL;
}
conn->messages = htp_list_create(8);
if (conn->messages == NULL) {
htp_list_destroy(conn->transactions);
conn->transactions = NULL;
free(conn);
return NULL;
}
return conn;
}
void htp_conn_close(htp_conn_t *conn, const htp_time_t *timestamp) {
if (conn == NULL) return;
// Update timestamp.
if (timestamp != NULL) {
memcpy(&(conn->close_timestamp), timestamp, sizeof(htp_time_t));
}
}
void htp_conn_destroy(htp_conn_t *conn) {
if (conn == NULL) return;
if (conn->transactions != NULL) {
// Destroy individual transactions. Do note that iterating
// using the iterator does not work here because some of the
// list element may be NULL (and with the iterator it is impossible
// to distinguish a NULL element from the end of the list).
for (size_t i = 0, n = htp_list_size(conn->transactions); i < n; i++) {
htp_tx_t *tx = htp_list_get(conn->transactions, i);
if (tx != NULL) {
htp_tx_destroy_incomplete(tx);
}
}
htp_list_destroy(conn->transactions);
conn->transactions = NULL;
}
if (conn->messages != NULL) {
// Destroy individual messages.
for (size_t i = 0, n = htp_list_size(conn->messages); i < n; i++) {
htp_log_t *l = htp_list_get(conn->messages, i);
free((void *) l->msg);
free(l);
}
htp_list_destroy(conn->messages);
conn->messages = NULL;
}
if (conn->server_addr != NULL) {
free(conn->server_addr);
}
if (conn->client_addr != NULL) {
free(conn->client_addr);
}
free(conn);
}
htp_status_t htp_conn_open(htp_conn_t *conn, const char *client_addr, int client_port,
const char *server_addr, int server_port, const htp_time_t *timestamp)
{
if (conn == NULL) return HTP_ERROR;
if (client_addr != NULL) {
conn->client_addr = strdup(client_addr);
if (conn->client_addr == NULL) return HTP_ERROR;
}
conn->client_port = client_port;
if (server_addr != NULL) {
conn->server_addr = strdup(server_addr);
if (conn->server_addr == NULL) {
if (conn->client_addr != NULL) {
free(conn->client_addr);
}
return HTP_ERROR;
}
}
conn->server_port = server_port;
// Remember when the connection was opened.
if (timestamp != NULL) {
memcpy(&(conn->open_timestamp), timestamp, sizeof(*timestamp));
}
return HTP_OK;
}
htp_status_t htp_conn_remove_tx(htp_conn_t *conn, const htp_tx_t *tx) {
if ((tx == NULL) || (conn == NULL)) return HTP_ERROR;
if (conn->transactions == NULL) return HTP_ERROR;
for (size_t i = 0, n = htp_list_size(conn->transactions); i < n; i++) {
htp_tx_t *tx2 = htp_list_get(conn->transactions, i);
if (tx2 == tx) {
return htp_list_replace(conn->transactions, i, NULL);
}
}
return HTP_DECLINED;
}
void htp_conn_track_inbound_data(htp_conn_t *conn, size_t len, const htp_time_t *timestamp) {
if (conn == NULL) return;
conn->in_data_counter += len;
}
void htp_conn_track_outbound_data(htp_conn_t *conn, size_t len, const htp_time_t *timestamp) {
if (conn == NULL) return;
conn->out_data_counter += len;
}
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