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#!/usr/bin/env python

# Using a Python script to run sudo to run a Python script is a bit
# silly, but it lets us use rpki.autoconf to locate sudo, lets us
# avoid needing a custom setuid wrapper, lets us avoid another pass
# through the adventures of shell quoting and tokenization, and
# generally is just a lot simpler to implement correctly.
#
# OK, it's probably a few milliseconds slower.  Big deal.

if __name__ == "__main__":

    import os
    import pwd
    import sys
    import rpki.autoconf

    try:
        uid = pwd.getpwnam(rpki.autoconf.RPKI_USER).pw_uid
    except:
        uid = None

    if uid is None or uid == os.geteuid():
        import rpki.rpkic
        rpki.rpkic.main()

    else:
        try:
            argv = [rpki.autoconf.SUDO, "-u", rpki.autoconf.RPKI_USER,
                    os.path.abspath(sys.argv[0])] + sys.argv[1:]
            os.execv(argv[0], argv)
            sys.exit("rpkic startup failure, no exception so don't know why, sorry")

        except Exception as e:
            sys.exit("Couldn't exec sudo python rpkic: {!s}".format(e))