0x00 and 0x0a bytes do not appear in the output

[jose1711]

$ cat script.py 
#!/usr/bin/env python
import serial
s = serial.Serial('/dev/ttyUSB0')
s.write(b'\x00\x00\xff\x0a\xff\x00')

$ ./traciex -w foo.file -t /dev/ttyUSB0 ./script.py
tracie: Tracing I/O on Executables
v1.0, released 2020-08-15
Developed by CsokiCraft
tracie is free software; see LICENSE
***tracie v1.0
***Waiting for connection...
***Connected
***tracie v1.0
***Waiting for connection...
***Connected
�
�%  

Expected output:
all 6 bytes appear in the output

Actual output:
only 0xff bytes are present:

$ od -xa foo.file 
0000000    ffff
        del del
0000002

[bence98]

Very interesting find indeed! I did a little debugging, and it seems that this is in fact the case, no \0 or \n characters are being saved to the trace file. However, I do believe that they are being sent in the named pipes, but they aren't handled properly by the shell builtin echo in traciex (line 14). As I do not know how to make echo behave in a binary-friendly way, I think the only option is to not use traciex, but rather make your own Tracie front-end. All the relevant info can be found in tracie.c, lines 14-20. If I have the time, I may try to re-roll traciex in Python3 or C and that will hopefully fix the issue, but until then, use socat or dd (or something similar that properly handles binary data) to read TRACIE_PIPE_W (/tmp/tracie-pipe-w).