Mailinglist JSON API

Closes #29 (closed) Closes #475 (closed)

With a new syncmailinglists.py:

#!/usr/bin/env python3
import subprocess
import sys
import tempfile
import urllib.request
import json

API_URL = 'https://thalia.nu/api/v1/mailinglists/?secret={{ mailman_apikey }}'


def get_json():
    response = urllib.request.urlopen(API_URL)
    obj = json.load(response)
    return obj


def populate_list(list_name, prefix, archived, moderated, list_addresses):
    archived = 1 if archived else 0
    moderated = 1 if moderated else 0

    f = tempfile.NamedTemporaryFile(mode='w')
    f.write('real_name = "{}"\n'.format(list_name))
    f.write('subject_prefix = "{}"\n'.format(prefix))
    f.write('admin_immed_notify = {}\n'.format(moderated))
    f.write('default_member_moderation = {}\n'.format(moderated))
    f.write('generic_nonmember_action = {}\n'.format(moderated))
    f.write('archive = {}\n'.format(archived))
    f.flush()

    subprocess.call(['/usr/sbin/newlist',
                     '-qe',
                     'thalia.nu',
                     list_name,
                     'postmaster@thalia.nu',
                     '{{ mailman_listadmin_password }}'
                     ],
                    stderr=subprocess.DEVNULL)

    subprocess.check_call(['/usr/sbin/config_list',
                           '-i',
                           '/etc/mailman/default_listconfigs.py',
                           list_name])

    # First apply the default configurations
    subprocess.check_call(['/usr/sbin/config_list',
                           '-i',
                           f.name,
                           list_name])

    with subprocess.Popen(['/usr/sbin/sync_members',
                           '-f',
                           '-',
                           '--welcome-msg=no',
                           '--goodbye-msg=no',
                           '--digest=no',
                           list_name],
                          stdin=subprocess.PIPE) as proc:
        for a in list_addresses:
            proc.stdin.write((a + '\n').encode('utf-8'))
        proc.stdin.flush()


old_lists = subprocess.check_output(['/usr/sbin/list_lists', '-b']).decode(
    'utf-8').splitlines()

server_lists = get_json()

for list in server_lists:
    for name in list['names']:
        populate_list(name, list['prefix'], list['archived'],
                      list['moderated'], list['addresses'])
        if name in old_lists:
            old_lists.remove(name)

old_lists.remove('mailman')
if len(old_lists) > 1:
    print('We want to remove more than one mailinglist!', file=sys.stderr)
    sys.exit(1)

for old_list in old_lists:
    subprocess.call(['/usr/sbin/rmlist', old_list])