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/* Copyright (C) 2007-2014 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Victor Julien <victor@inliniac.net>
* \author Anoop Saldanha <anoopsaldanha@gmail.com>
*
* Application layer handling and protocols implementation
*/
#ifndef __APP_LAYER_H__
#define __APP_LAYER_H__
#include "threadvars.h"
#include "decode.h"
#include "flow.h"
#include "stream-tcp-private.h"
#include "stream-tcp-reassemble.h"
#include "rust.h"
#define APP_LAYER_DATA_ALREADY_SENT_TO_APP_LAYER \
(~STREAM_TOSERVER & ~STREAM_TOCLIENT)
/***** L7 layer dispatchers *****/
/**
* \brief Handles reassembled tcp stream.
*/
int AppLayerHandleTCPData(ThreadVars *tv, TcpReassemblyThreadCtx *ra_ctx, Packet *p, Flow *f,
TcpSession *ssn, TcpStream **stream, uint8_t *data, uint32_t data_len, uint8_t flags,
enum StreamUpdateDir dir);
/**
* \brief Handles an udp chunk.
*/
int AppLayerHandleUdp(ThreadVars *tv, AppLayerThreadCtx *app_tctx,
Packet *p, Flow *f);
/***** Utility *****/
/**
* \brief Given a protocol string, returns the corresponding internal
* protocol id.
*
* \param The internal protocol id.
*/
AppProto AppLayerGetProtoByName(char *alproto_name);
/**
* \brief Given the internal protocol id, returns a string representation
* of the protocol.
*
* \param alproto The internal protocol id.
*
* \retval String representation of the protocol.
*/
const char *AppLayerGetProtoName(AppProto alproto);
void AppLayerListSupportedProtocols(void);
/***** Setup/General Registration *****/
/**
* \brief Setup the app layer.
*
* Includes protocol detection setup and the protocol parser setup.
*
* \retval 0 On success.
* \retval -1 On failure.
*/
int AppLayerSetup(void);
/**
* \brief De initializes the app layer.
*
* Includes de initializing protocol detection and the protocol parser.
*/
int AppLayerDeSetup(void);
/**
* \brief Creates a new app layer thread context.
*
* \retval Pointer to the newly create thread context, on success;
* NULL, on failure.
*/
AppLayerThreadCtx *AppLayerGetCtxThread(ThreadVars *tv);
/**
* \brief Destroys the context created by AppLayerGetCtxThread().
*
* \param tctx Pointer to the thread context to destroy.
*/
void AppLayerDestroyCtxThread(AppLayerThreadCtx *tctx);
/**
* \brief Registers per flow counters for all protocols
*
*/
void AppLayerRegisterThreadCounters(ThreadVars *tv);
/***** Profiling *****/
void AppLayerProfilingResetInternal(AppLayerThreadCtx *app_tctx);
static inline void AppLayerProfilingReset(AppLayerThreadCtx *app_tctx)
{
#ifdef PROFILING
AppLayerProfilingResetInternal(app_tctx);
#endif
}
void AppLayerProfilingStoreInternal(AppLayerThreadCtx *app_tctx, Packet *p);
static inline void AppLayerProfilingStore(AppLayerThreadCtx *app_tctx, Packet *p)
{
#ifdef PROFILING
AppLayerProfilingStoreInternal(app_tctx, p);
#endif
}
void AppLayerRegisterGlobalCounters(void);
/***** Unittests *****/
#ifdef UNITTESTS
void AppLayerUnittestsRegister(void);
#endif
void AppLayerIncTxCounter(ThreadVars *tv, Flow *f, uint64_t step);
void AppLayerIncGapErrorCounter(ThreadVars *tv, Flow *f);
void AppLayerIncAllocErrorCounter(ThreadVars *tv, Flow *f);
void AppLayerIncParserErrorCounter(ThreadVars *tv, Flow *f);
void AppLayerIncInternalErrorCounter(ThreadVars *tv, Flow *f);
static inline const uint8_t *StreamSliceGetData(const StreamSlice *stream_slice)
{
return stream_slice->input;
}
static inline uint32_t StreamSliceGetDataLen(const StreamSlice *stream_slice)
{
return stream_slice->input_len;
}
#endif
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