"""Set one or more of a list's admin, moderator or poster passwords.

Save as bin/set_passwd.py

Run via

   bin/withlist -r set_passwd <listname> <option> ...

Option:
    -a <password>
    --admin=<password>
        Set the list's admin password to <password>
    -m <password>
    --moderator=<password>
        Set the list's moderator password to <password>
    -p <password>
    --poster=<password>
        Set the list's poster password to <password>
    -h
    --help
        Show this message
"""

import sys
import getopt

from Mailman.Utils import sha_new

def usage(code, msg=''):
    if code:
        fd = sys.stderr
    else:
        fd = sys.stdout
    print >> fd, __doc__
    if msg:
        print >> fd, msg
    sys.exit(code)

def set_passwd(mlist, *args):

    try:
        opts, args = getopt.getopt(args, 'a:m:p:h',
                                   ['admin=', 'moderator=', 'poster=', 'help'])
    except getopt.error, msg:
        usage(1, msg)
    if args:
        usage(1, 'Unrecognized: %s' % repr(args))

    admin = mod = poster = None
    for opt, arg in opts:
        if opt in ('-a', '--admin'):
            admin = arg
        if opt in ('-m', '--moderator'):
            mod = arg
        if opt in ('-p', '--poster'):
            poster = arg
        if opt in ('-h', '--help'):
            usage(0)
    if not (admin or mod or poster):
            usage(1, 'Nothing to do.')

    if not mlist.Locked():
        mlist.Lock()
    if admin:
        mlist.password = sha_new(admin).hexdigest()
    if mod:
        mlist.mod_password = sha_new(mod).hexdigest()
    if poster:
        mlist.post_password = sha_new(poster).hexdigest()
    mlist.Save()
    mlist.Unlock()