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/* Copyright (C) 2007-2010 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 Gurvinder Singh <gurvindersinghdahiya@gmail.com>
*/
#ifndef __STREAM_TCP_REASSEMBLE_H__
#define __STREAM_TCP_REASSEMBLE_H__
#include "stream-tcp-private.h"
#include "stream.h"
#include "app-layer-detect-proto.h"
#include "stream-tcp-private.h"
/** Supported OS list and default OS policy is BSD */
enum
{
OS_POLICY_NONE = 1,
OS_POLICY_BSD,
OS_POLICY_BSD_RIGHT,
OS_POLICY_OLD_LINUX,
OS_POLICY_LINUX,
OS_POLICY_OLD_SOLARIS,
OS_POLICY_SOLARIS,
OS_POLICY_HPUX10,
OS_POLICY_HPUX11,
OS_POLICY_IRIX,
OS_POLICY_MACOS,
OS_POLICY_WINDOWS,
OS_POLICY_VISTA,
OS_POLICY_WINDOWS2K3,
OS_POLICY_FIRST,
OS_POLICY_LAST
};
typedef struct TcpReassemblyThreadCtx_ {
void *app_tctx;
/** TCP segments which are not being reassembled due to memcap was reached */
uint16_t counter_tcp_segment_memcap;
/** number of streams that stop reassembly because their depth is reached */
uint16_t counter_tcp_stream_depth;
/** count number of streams with a unrecoverable stream gap (missing pkts) */
uint16_t counter_tcp_reass_gap;
#ifdef DEBUG
uint64_t fp1;
uint64_t fp2;
uint64_t sp;
#endif
} TcpReassemblyThreadCtx;
#define OS_POLICY_DEFAULT OS_POLICY_BSD
int StreamTcpReassembleHandleSegment(ThreadVars *, TcpReassemblyThreadCtx *, TcpSession *, TcpStream *, Packet *, PacketQueue *);
int StreamTcpReassembleInit(char);
void StreamTcpReassembleFree(char);
void StreamTcpReassembleRegisterTests(void);
TcpReassemblyThreadCtx *StreamTcpReassembleInitThreadCtx(ThreadVars *tv);
void StreamTcpReassembleFreeThreadCtx(TcpReassemblyThreadCtx *);
int StreamTcpReassembleAppLayer (ThreadVars *tv, TcpReassemblyThreadCtx *ra_ctx,
TcpSession *ssn, TcpStream *stream,
Packet *p);
void StreamTcpCreateTestPacket(uint8_t *, uint8_t, uint8_t, uint8_t);
void StreamTcpSetSessionNoReassemblyFlag (TcpSession *, char );
void StreamTcpSetDisableRawReassemblyFlag (TcpSession *ssn, char direction);
void StreamTcpSetOSPolicy(TcpStream *, Packet *);
void StreamTcpReassemblePause (TcpSession *, char );
void StreamTcpReassembleUnPause (TcpSession *, char );
int StreamTcpCheckStreamContents(uint8_t *, uint16_t , TcpStream *);
int StreamTcpReassembleInsertSegment(ThreadVars *, TcpReassemblyThreadCtx *, TcpStream *, TcpSegment *, Packet *);
TcpSegment* StreamTcpGetSegment(ThreadVars *, TcpReassemblyThreadCtx *, uint16_t);
void StreamTcpReturnStreamSegments(TcpStream *);
void StreamTcpSegmentReturntoPool(TcpSegment *);
void StreamTcpReassembleTriggerRawReassembly(TcpSession *);
void StreamTcpPruneSession(Flow *, uint8_t);
int StreamTcpReassembleDepthReached(Packet *p);
void StreamTcpReassembleIncrMemuse(uint64_t size);
void StreamTcpReassembleDecrMemuse(uint64_t size);
int StreamTcpReassembleCheckMemcap(uint32_t size);
void StreamTcpDisableAppLayer(Flow *f);
int StreamTcpAppLayerIsDisabled(Flow *f);
#endif /* __STREAM_TCP_REASSEMBLE_H__ */
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