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47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// Copyright (C) 2022 Check Point Software Technologies Ltd. All rights reserved.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __PM_HOOK_H__
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#define __PM_HOOK_H__
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#include <memory>
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#include <string>
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#include <map>
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#include <unordered_set>
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#include <sys/types.h>
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#include "i_pm_scan.h"
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class KissThinNFA;
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class PMHook final : public I_PMScan
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{
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public:
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explicit PMHook();
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~PMHook();
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Maybe<void> prepare(const std::set<PMPattern> &patterns);
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std::set<PMPattern> scanBuf(const Buffer &buf) const override;
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std::set<std::pair<uint, uint>> scanBufWithOffset(const Buffer &buf) const override;
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void scanBufWithOffsetLambda(const Buffer &buf, I_PMScan::CBFunction cb) const override;
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// Line may begin with ^ or $ sign to mark LSS is at begin/end of buffer.
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static Maybe<PMPattern> lineToPattern(const std::string &line);
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bool ok() const { return static_cast<bool>(handle); }
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private:
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std::shared_ptr<KissThinNFA> handle;
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std::map<int, PMPattern> patterns;
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};
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#endif // __PM_HOOK_H__
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