#!/usr/bin/python

import os, syslog
from subprocess import Popen, PIPE, STDOUT
from ceo import conf
from ceo.ops import get_ceo_user, check_group

CONFIG_FILE = '/etc/csc/mailman.cf'

cfg = {}

def configure():
    string_fields = ['members_list', 'list_domain']

    # read configuration file
    cfg_tmp = conf.read(CONFIG_FILE)

    # verify configuration
    conf.check_string_fields(CONFIG_FILE, string_fields, cfg_tmp)

    # update the current configuration with the loaded values
    cfg.update(cfg_tmp)

def main():
    configure()

    remote_user = get_ceo_user()
    user_to_add = raw_input()

    if cfg['members_list'] == 'none':
        print 'Disabled: %s' % user_to_add
        return

    if remote_user == user_to_add or check_group(remote_user, 'office') or check_group(remote_user, 'syscom'):
        mailman = Popen(["/opt/mailman3/bin/mailman", "addmembers", "-", "%s@%s" % (cfg['members_list'], cfg['list_domain'])],
                        stdin=PIPE, stdout=PIPE, stderr=STDOUT)
        out, err = mailman.communicate("%s@%s\n" % (user_to_add, cfg['list_domain']))
        syslog.syslog(syslog.LOG_INFO, out)
        print out
    else:
        message = "Access denied: user '%s' cannot subscribe users to %s" % (remote_user, cfg['members_list'])
        syslog.syslog(syslog.LOG_NOTICE, message)
        print message

if __name__ == '__main__':
    syslog.openlog('op-mailman', syslog.LOG_PID, syslog.LOG_DAEMON)
    main()