Write TLS keys system-wide in macOS via SSLKEYLOGFILE and launchd

README.md

1. Put tlskeylogger.plist at ~/Library/LaunchAgents/tlskeylogger.plist
2. launchctl load ~/Library/LaunchAgents/tlskeylogger.plist, so it will load on the next restart
3. launchctl start ~/Library/LaunchAgents/tlskeylogger.plist, so it will load the environment variable immediately
4. Restart your browser(s)
5. See how TLS keys are being written to ~/.tlskeyfile via tail -f ~/.tlskeyfile

tlskeylogger.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>sslkeylogger</string>
  <key>ProgramArguments</key>
  <array>
    <string>sh</string>
    <string>-c</string>
    <string>
    launchctl setenv SSLKEYLOGFILE ~/.tlskeyfile
    </string>
  </array>
  <key>RunAtLoad</key>
  <true/>
</dict>
</plist>