| 121,11 → 121,12 |
|---|
| ; First validate, checksum |
| |
| neg [esi + UDP_header.Checksum] ; substract checksum from 0 |
| jz .no_checksum ; if checksum is zero, it is considered valid and we continue processing |
| jz .no_checksum ; if checksum is zero, it is considered valid |
| |
| ; otherwise, we will re-calculate the checksum and add it to this value, thus creating 0 when it is correct |
| |
| UDP_checksum (edi), (edi+4) |
| ;;; jnz .checksum_mismatch |
| jnz .checksum_mismatch |
| |
| .no_checksum: |
| DEBUGF 1,"UDP Checksum is correct\n" |
| 287,7 → 288,7 |
|---|
| .fail: |
| DEBUGF 1,"UDP_output: failed\n" |
| add esp, 4+4+8 |
| xor eax, eax |
| or eax, -1 |
| ret |
| |
| |