Cannot run sfw as a normal user due to auto-update mechanism

[fmarier]

I installed sfw as root (sudo npm -g i sfw) and then ran it once as root.

Everything was fine for about a day (I could run it as my normal user), but now it doesn't work anymore because it can't update itself (it cannot write to /usr/lib/node_modules/sfw/):

$ sfw npm --help
[sfw] Failed to prepare firewall binary: EACCES: permission denied, open '/usr/lib/node_modules/sfw/.sfw-cache/next-check'
$

Maybe it should be using ~/.cache/sfw/ instead of /usr/lib/node_modules/sfw/.sfw-cache/? It would also mean that it can work on systems where /usr/ is mounted read-only.

[divmain]

That's a completely valid scenario that I didn't account for. This should be fixable - I'll noodle on this a bit and come back when I'm happy with the fix.