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offline_packet_filter.h
1 /*
2  * Copyright (c) 2017, Matias Fontanini
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4  *
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29 
30 #ifndef TINS_OFFLINE_PACKET_FILTER_H
31 #define TINS_OFFLINE_PACKET_FILTER_H
32 
33 #include <string>
34 #include <stdint.h>
35 #include <tins/macros.h>
36 
37 #ifdef TINS_HAVE_PCAP
38 
39 #include <tins/data_link_type.h>
40 
41 namespace Tins {
42 
43 class PDU;
44 
82 class TINS_API OfflinePacketFilter {
83 public:
91  template<typename T>
92  OfflinePacketFilter(const std::string& filter,
93  const DataLinkType<T>& lt,
94  unsigned int snap_len = 65535)
95  : string_filter_(filter) {
96  init(filter, lt.get_type(), snap_len);
97  }
98 
108  OfflinePacketFilter(const OfflinePacketFilter& other);
109 
117  OfflinePacketFilter& operator=(const OfflinePacketFilter& other);
118 
122  ~OfflinePacketFilter();
123 
135  bool matches_filter(const uint8_t* buffer, uint32_t total_sz) const;
136 
150  bool matches_filter(PDU& pdu) const;
151 private:
152  void init(const std::string& pcap_filter, int link_type,
153  unsigned int snap_len);
154 
155 
156  pcap_t* handle_;
157  mutable bpf_program filter_;
158  std::string string_filter_;
159 };
160 
161 } // Tins
162 
163 #endif // TINS_HAVE_PCAP
164 
165 #endif // TINS_OFFLINE_PACKET_FILTER_H