| 251,6 → 251,27 |
|---|
| pop [ebx + TCP_SOCKET.ts_ecr] |
| or [ebx + TCP_SOCKET.temp_bits], TCP_BIT_TIMESTAMP |
| |
| ; Since we have a timestamp, lets do the paws test right away! |
| |
| test [edx + TCP_header.Flags], TH_RST |
| jnz .no_paws |
| |
| mov eax, [ebx + TCP_SOCKET.ts_recent] |
| test eax, eax |
| jz .no_paws |
| cmp eax, [ebx + TCP_SOCKET.ts_val] |
| jge .no_paws |
| |
| DEBUGF 1,"TCP_input: PAWS: detected an old segment\n" |
| |
| mov eax, [esp+4+4] ; tcp_now |
| sub eax, [ebx + TCP_SOCKET.ts_recent_age] |
| cmp eax, TCP_PAWS_IDLE |
| jle .dropafterack ; TODO: update stats |
| |
| mov [ebx + TCP_SOCKET.ts_recent], 0 ; timestamp was invalid, fix it. |
| .no_paws: |
| |
| add esi, 10 |
| jmp .opt_loop |
| |
| 442,24 → 463,6 |
|---|
| |
| DEBUGF 1,"TCP_input: state is not listen or syn_sent\n" |
| |
| ;-------------------------------------------- |
| ; Protection Against Wrapped Sequence Numbers |
| |
| ; First, check if timestamp is present |
| |
| ;;;; TODO 602 |
| |
| ; Then, check if at least some bytes of data are within window |
| |
| ;;;; TODO |
| |
| |
| |
| |
| |
| |
| |
| |
| ;---------------------------- |
| ; trim any data not in window |
| |