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/* $Id: dlt_plugins.h 2423 2010-03-13 07:09:49Z aturner $ */
/*
* Copyright (c) 2006-2010 Aaron Turner.
* 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.
* 3. Neither the names of the copyright owners 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 ``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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/*
* Main DLT Plugin Header. You should only include this file outside
* of the plugin API. dlt_plugin-int.h is used internal to the plugin ONLY.
*/
#include "tcpedit.h"
#ifndef _DLT_PLUGINS_H_
#define _DLT_PLUGINS_H_
/* forward declare our context, so we can use it in the plugin struct */
typedef struct tcpeditdlt_s tcpeditdlt_t;
/*
* initialize the DLT plugin backend, and return a new context var.
* call this once per pcap to be processed
*/
tcpeditdlt_t *tcpedit_dlt_init(tcpedit_t *tcpedit, int srcdlt);
/* cleans up after ourselves. Called for each initalized plugin */
void tcpedit_dlt_cleanup(tcpeditdlt_t *ctx);
/* What is the output DLT type? */
int tcpedit_dlt_output_dlt(tcpeditdlt_t *ctx);
int tcpedit_dlt_l2len(tcpeditdlt_t *ctx, int dlt, const u_char *packet, const int pktlen);
/*
* process the given packet, by calling decode & encode
*/
int tcpedit_dlt_process(tcpeditdlt_t *ctx, u_char **packet, int pktlen, tcpr_dir_t direction);
/*
* or you can call them sperately if you want
*/
int tcpedit_dlt_decode(tcpeditdlt_t *ctx, const u_char *packet, const int pktlen);
int tcpedit_dlt_encode(tcpeditdlt_t* ctx, u_char *packet, int pktlen, tcpr_dir_t direction);
/*
* After processing each packet, you can get info about L2/L3
*/
int tcpedit_dlt_proto(tcpeditdlt_t *ctx, int dlt, const u_char *packet, const int pktlen);
u_char *tcpedit_dlt_l3data(tcpeditdlt_t *ctx, int dlt, u_char *packet, const int pktlen);
/* merge the L2 & L3 (possibly changed?) after calling tcpedit_dlt_l3data() */
u_char *tcpedit_dlt_merge_l3data(tcpeditdlt_t *ctx, int dlt, u_char *packet, const int pktlen, u_char *l3data);
int tcpedit_dlt_src(tcpeditdlt_t *ctx);
int tcpedit_dlt_dst(tcpeditdlt_t *ctx);
#endif
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