From 0e9be0d902b44894ed747cabb82ea2120f2e4b45 Mon Sep 17 00:00:00 2001 From: Mosder Date: Fri, 10 Jul 2026 22:50:12 +0200 Subject: feat: added functionallity for TCP stream reassembly --- analyzer/utils/tcp_seq_math.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 analyzer/utils/tcp_seq_math.h (limited to 'analyzer/utils/tcp_seq_math.h') diff --git a/analyzer/utils/tcp_seq_math.h b/analyzer/utils/tcp_seq_math.h new file mode 100644 index 0000000..c4da5f9 --- /dev/null +++ b/analyzer/utils/tcp_seq_math.h @@ -0,0 +1,28 @@ +// utils/tcp_seq_math.h +// helper functions for math regarding tcp sequence numbers which correctly handle overflow + +#include + +// check if a is after b +extern int seq_after(uint32_t a, uint32_t b); + +// check if a is before b +extern int seq_before(uint32_t a, uint32_t b); + +// check if a is after or equal to b +extern int seq_after_eq(uint32_t a, uint32_t b); + +// check if a is before or equal to b +extern int seq_before_eq(uint32_t a, uint32_t b); + +// check if value is in [range_start; range_end] +extern int seq_in_range_ii(uint32_t value, uint32_t range_start, uint32_t range_end); + +// check if value is in (range_start; range_end) +extern int seq_in_range_ee(uint32_t value, uint32_t range_start, uint32_t range_end); + +// check if value is in [range_start; range_end) +extern int seq_in_range_ie(uint32_t value, uint32_t range_start, uint32_t range_end); + +// check if value is in (range_start; range_end] +extern int seq_in_range_ei(uint32_t value, uint32_t range_start, uint32_t range_end); -- cgit v1.2.3