intel-power-control-setup

#!/usr/bin/env python3

import os
import stat
import sys


def setup_suid(helper, statinfo):
    print("Using SUID method")
    if statinfo.st_uid != 0:
        print("Changing ownership to root:root")
        os.chown(helper, 0, 0)
    if stat.S_IMODE(statinfo.st_mode) != 0o4755:
        print("Setting SUID bit")
        os.chmod(helper, 0o4755)


def setup_sudo(helper):
    print("Using sudo method")
    sudodir = "/etc/sudoers.d"
    if not os.path.exists(sudodir):
        print(f"{sudodir} does not exist, is sudo installed?")
        sys.exit(1)
    sudofile = os.path.join(sudodir, "intel-power-control")
    with open(sudofile, "w") as f:
        f.write(f"%sudo ALL=(ALL) NOPASSWD: {helper}")

    print(
        f"Successfully installed {sudofile},"
        " make sure user is member of group sudo"
    )


installdir = os.path.dirname(__file__)
helper = os.path.join(installdir, "intel-power-control-helper")

if not os.path.exists(helper):
    print(f"Could not find intel-power-control-helper in {installdir}")
    sys.exit(1)

statinfo = os.stat(helper)
if statinfo.st_uid == 0 and stat.S_IMODE(statinfo.st_mode) == 0o4755:
    print("intel-power-control-helper is already set up correctly")
    sys.exit(0)

if os.geteuid() != 0:
    print("Please run this script with root privileges")
    sys.exit(1)

dirstat = os.stat(os.path.dirname(helper))
if dirstat.st_uid != 0 or dirstat.st_gid != 0:
    print(
        "Installation directory does not belong to root,"
        " assuming user installation"
    )
    setup_suid(helper, statinfo)
else:
    print("Installation directory belongs to root, choose strategy:")
    print("1: suid")
    print("2: sudo")
    ans = input("Choose 1 or 2, Ctrl-C to abort:").strip()
    if ans == "1":
        setup_suid(helper, statinfo)
    elif ans == "2":
        setup_sudo(helper)
    else:
        print("Aborting")
        sys.exit(1)

sys.exit(0)