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89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/*
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* Copyright (c) 2015-2016, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file
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* \brief FDR literal matcher: runtime API.
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*/
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#ifndef FDR_H
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#define FDR_H
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#include "ue2common.h"
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#include "hwlm/hwlm.h"
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// C linkage in the API
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct FDR;
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/** \brief Returns non-zero if the contents of the stream state indicate that
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* there is active FDR history beyond the regularly used history. */
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u32 fdrStreamStateActive(const struct FDR *fdr, const u8 *stream_state);
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/**
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* \brief Block-mode scan.
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*
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* \param fdr FDR matcher engine.
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* \param buf Buffer to scan.
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* \param len Length of buffer to scan.
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* \param start First offset in buf at which a match may end.
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* \param cb Callback to call when a match is found.
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* \param ctxt Caller-provided context pointer supplied to callback on match.
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* \param groups Initial groups mask.
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*/
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hwlm_error_t fdrExec(const struct FDR *fdr, const u8 *buf, size_t len,
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size_t start, HWLMCallback cb, void *ctxt,
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hwlm_group_t groups);
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/**
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* \brief Streaming-mode scan.
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*
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* \param fdr FDR matcher engine.
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* \param hbuf History buffer.
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* \param hlen Length of history buffer (hbuf).
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* \param buf Buffer to scan.
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* \param len Length of buffer to scan (buf).
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* \param start First offset in buf at which a match may end.
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* \param cb Callback to call when a match is found.
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* \param ctxt Caller-provided context pointer supplied to callback on match.
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* \param groups Initial groups mask.
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* \param stream_state Persistent stream state for use by FDR.
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*/
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hwlm_error_t fdrExecStreaming(const struct FDR *fdr, const u8 *hbuf,
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size_t hlen, const u8 *buf, size_t len,
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size_t start, HWLMCallback cb, void *ctxt,
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hwlm_group_t groups, u8 *stream_state);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // FDR_H
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