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f4101b5265
- flow_weird event with name argument value of "routing0_hdr" is raised for packets containing an IPv6 routing type 0 header because this type of header is now deprecated according to RFC 5095. - packets with a routing type 0 header and non-zero segments left now use the last address in that header in order to associate with a connection/flow and for calculating TCP/UDP checksums. - added a set of IPv4/IPv6 TCP/UDP checksum unit tests
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
// See the file "COPYING" in the main distribution directory for copyright.
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#ifndef udp_h
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#define udp_h
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#include "Analyzer.h"
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#include <netinet/udp.h>
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typedef enum {
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UDP_INACTIVE, // no packet seen
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UDP_ACTIVE, // packets seen
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} UDP_EndpointState;
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class UDP_Analyzer : public TransportLayerAnalyzer {
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public:
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UDP_Analyzer(Connection* conn);
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virtual ~UDP_Analyzer();
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virtual void Init();
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virtual void UpdateConnVal(RecordVal *conn_val);
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static Analyzer* InstantiateAnalyzer(Connection* conn)
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{ return new UDP_Analyzer(conn); }
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static bool Available() { return true; }
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protected:
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virtual void Done();
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virtual void DeliverPacket(int len, const u_char* data, bool orig,
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int seq, const IP_Hdr* ip, int caplen);
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virtual bool IsReuse(double t, const u_char* pkt);
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virtual unsigned int MemoryAllocation() const;
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// Returns true if the checksum is valid, false if not
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static bool ValidateChecksum(const IP_Hdr* ip, const struct udphdr* up,
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int len);
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bro_int_t request_len, reply_len;
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private:
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void UpdateEndpointVal(RecordVal* endp, int is_orig);
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#define HIST_ORIG_DATA_PKT 0x1
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#define HIST_RESP_DATA_PKT 0x2
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#define HIST_ORIG_CORRUPT_PKT 0x4
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#define HIST_RESP_CORRUPT_PKT 0x8
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};
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#endif
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