Mozilla JSON LZ4 parser
This is a python3 utility. The Mozilla jsonlz4 'file-type' is unique in that the header (mozLz40\x00) is not a proper LZ4 frame. Due to this, the first 8 bytes (the header) must be skipped, and the remainder of the file is treated as a block.
This script will essentially take an input file (jsonlz4 type file), read the block, and output to a json file. Requirements: pip install lz4 Windows requires Visual Studio Build Tools 14+ be installed for lz4 to be installed.
Binaries compiled with the following command line:
pyinstaller pyson4.spec
Source Material:
https://dxr.mozilla.org/mozilla-central/source/toolkit/components/lz4/lz4.js https://buildmedia.readthedocs.org/media/pdf/python-lz4/latest/python-lz4.pdf