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expose some TCP analyzer utility functions for use by derived classes

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This commit is contained in:
Vern Paxson 2019-04-23 16:40:58 -07:00
parent aebcb1415d
commit 85acdc14e4
2 changed files with 12 additions and 4 deletions
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8
src/analyzer/protocol/tcp/TCP.cc
View file

@ -1019,9 +1019,9 @@ void TCP_Analyzer::CheckPIA_FirstPacket(int is_orig, const IP_Hdr* ip)
} }
} }
static uint64 get_relative_seq(const TCP_Endpoint* endpoint, uint64 TCP_Analyzer::get_relative_seq(const TCP_Endpoint* endpoint,
uint32 cur_base, uint32 last, uint32 wraps, uint32 cur_base, uint32 last,
bool* underflow = 0) uint32 wraps, bool* underflow)
{ {
int32 delta = seq_delta(cur_base, last); int32 delta = seq_delta(cur_base, last);
@ -1052,7 +1052,7 @@ static uint64 get_relative_seq(const TCP_Endpoint* endpoint,
return endpoint->ToRelativeSeqSpace(cur_base, wraps); return endpoint->ToRelativeSeqSpace(cur_base, wraps);
} }
static int get_segment_len(int payload_len, TCP_Flags flags) int TCP_Analyzer::get_segment_len(int payload_len, TCP_Flags flags)
{ {
int seg_len = payload_len; int seg_len = payload_len;

8
src/analyzer/protocol/tcp/TCP.h
View file

@ -174,6 +174,14 @@ protected:
const u_char* option, TCP_Analyzer* analyzer, const u_char* option, TCP_Analyzer* analyzer,
bool is_orig, void* cookie); bool is_orig, void* cookie);
// A couple of handle utility functions that we make available
// to any derived analyzers.
static uint64 get_relative_seq(const TCP_Endpoint* endpoint,
uint32 cur_base, uint32 last,
uint32 wraps, bool* underflow = 0);
static int get_segment_len(int payload_len, TCP_Flags flags);
private: private:
TCP_Endpoint* orig; TCP_Endpoint* orig;
TCP_Endpoint* resp; TCP_Endpoint* resp;