patch_steaminterface_spew.py

#!/usr/bin/python3

"""
Finds the location of the given string and patches the first character to the null terminator,
preventing the message from being displayed in the server console.

This can be executed while the server is running.
"""

import mmap

with open('steamclient.so', 'rb+') as bin:
	mbin = mmap.mmap(bin.fileno(), length = 0, access = mmap.ACCESS_WRITE)
	offset = mbin.find("RecordSteamInterfaceCreation (PID %d): %s / %s".encode('ascii'))
	
	if offset == -1:
		print('Failed to patch string.')
	else:
		mbin.seek(offset)
		mbin.write_byte(0)
		mbin.flush()