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82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Anoop Saldanha <anoopsaldanha@gmail.com>
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*/
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#ifndef __DETECT_ENGINE_SIGORDER_H__
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#define __DETECT_ENGINE_SIGORDER_H__
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/**
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* \brief Different kinds of helper data that can be used by the signature
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* ordering module. Used by the "user" field in SCSigSignatureWrapper
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*/
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typedef enum{
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SC_RADIX_USER_DATA_FLOWBITS,
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SC_RADIX_USER_DATA_FLOWVAR,
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SC_RADIX_USER_DATA_PKTVAR,
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SC_RADIX_USER_DATA_FLOWINT,
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SC_RADIX_USER_DATA_HOSTBITS,
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SC_RADIX_USER_DATA_IPPAIRBITS,
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SC_RADIX_USER_DATA_MAX
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} SCRadixUserDataType;
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/**
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* \brief Signature wrapper used by signature ordering module while ordering
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* signatures
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*/
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typedef struct SCSigSignatureWrapper_ {
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/* the wrapped signature */
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Signature *sig;
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/* used as the lower limit SCSigSignatureWrapper that is used by the next
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* ordering function, which will order the incoming Sigwrapper after this
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* (min) wrapper */
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struct SCSigSignatureWrapper_ *min;
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/* used as the upper limit SCSigSignatureWrapper that is used by the next
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* ordering function, which will order the incoming Sigwrapper below this
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* (max) wrapper */
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struct SCSigSignatureWrapper_ *max;
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/* user data that is to be associated with this sigwrapper */
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int user[SC_RADIX_USER_DATA_MAX];
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struct SCSigSignatureWrapper_ *next;
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struct SCSigSignatureWrapper_ *prev;
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} SCSigSignatureWrapper;
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/**
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* \brief Structure holding the signature ordering function used by the
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* signature ordering module
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*/
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typedef struct SCSigOrderFunc_ {
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/* Pointer to the Signature Ordering function */
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int (*SWCompare)(SCSigSignatureWrapper *sw1, SCSigSignatureWrapper *sw2);
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struct SCSigOrderFunc_ *next;
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} SCSigOrderFunc;
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void SCSigOrderSignatures(DetectEngineCtx *);
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void SCSigRegisterSignatureOrderingFuncs(DetectEngineCtx *);
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void SCSigRegisterSignatureOrderingTests(void);
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void SCSigSignatureOrderingModuleCleanup(DetectEngineCtx *);
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#endif /* __DETECT_ENGINE_SIGORDER_H__ */
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