toaruos/util/update-devtable.py

#!/usr/bin/env python3
import os
from pathlib import Path

def getPaths(base):
    out = []
    for root, dirs, files in os.walk(base):
        for i in dirs:
            out.append(os.path.join(root,i))
        for i in files:
            out.append(os.path.join(root,i))
    return out

with open('util/devtable','w') as devtable:

    # Set sudo apps to setuid, executable, no write
    devtable.write('/bin/gsudo f 4555 0 0 - - - - -\n')
    devtable.write('/bin/sudo f 4555 0 0 - - - - -\n')

    # Set master.passwd to not be visible except by root
    devtable.write('/etc/master.passwd f 600 0 0 - - - - -\n') # /etc/master.passwd should be restricted
    devtable.write('/etc/sudoers f 600 0 0 - - - - -\n')

    # Copy permissions and set ownership for user files
    for user_details in [('local',1000)]:
        user, uid = user_details
        devtable.write('/home/{user} d 755 {uid} {uid} - - - - -\n'.format(user=user,uid=uid))
        for path in getPaths('./base/home/{user}'.format(user=user)):
            p = Path(path)
            path_mod = path.replace('./base','').rstrip('/')
            path_type = 's' if p.is_symlink() else ('d' if p.is_dir() else 'f')
            st = os.stat(path)
            mode = '{:o}'.format(st.st_mode & 0o7777)
            devtable.write('{path_mod} {path_type} {mode} {uid} {uid} - - - - -\n'.format(path_mod=path_mod,path_type=path_type,mode=mode,uid=uid))

    # Special case /tmp to allow all users to write
    devtable.write('/tmp d 777 0 0 - - - - -\n')
    devtable.write('/var d 755 0 0 - - - - -\n')