LocalCDN-Firefox-Chrome-Brave/audit

Introduction

This script makes it possible for any user and extension reviewer to verify the integrity of the resources bundled. It compares all libraries with their original sources. Optionally, a local Tor proxy can be used. In total, there are over 1000 files in LocalCDN. This process can take between 5 and 15 minutes.

Prerequisites

• GNU/Linux (Debian, Ubuntu,...)
• Bash >= 4.4
• LocalCDN >= v2.6.3
• Local Tor SOCKS5 Proxy (optional, but recommended)

Tor Proxy

• Install Tor Proxy
  • sudo apt install tor
  • e.g. https://linuxconfig.org/install-tor-proxy-on-ubuntu-20-04-linux
• Check Tor
  • systemctl status tor@default.service
  • systemctl status tor.service

How to start

Open up a terminal and cd into this directory. However you run the script, the output can be redirected to a file with > output.txt

Usage:
           bash audit.sh [options]
           bash audit.sh [options] -d [resource]

Example:
           bash audit.sh
           bash audit.sh -tfr
           bash audit.sh -tfrd jquery

Options:
  -t       Use local Tor proxy (torsocks)
  -f       Create THIRD_PARTY.txt file with all contacted URLs
  -r       Replace in case of hash mismatch
  -l       List all resources
  -d       Check only ONE resource, e.g. jquery
           'bash audit.sh -d jquery'

Examples

• Check all files:
  • bash audit.sh
  • bash audit.sh > output.txt
• Check only one library. Choose the folder name from /resources/, e.g. jquery:
  • bash audit.sh -d jquery
  • bash audit.sh -d jquery > output.txt
• Check all files and replace in case of hash mismatch:
  • bash audit.sh -r
  • bash audit.sh -r > output.txt
• Check only one library files and replace in case of hash mismatch. Choose the folder name from /resources/, e.g. jquery:
  • bash audit.sh -rd jquery
  • bash audit.sh -rd jquery > output.txt

Required time

• direct without Tor proxy: ~5 minutes
• Tor proxy: ~15 minutes