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# -*- coding: utf-8 -*-
# dispatcher.py
# Copyright (C) 2016 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Command dispatcher.
"""
import json
from twisted.internet import defer
from twisted.python import failure, log
# TODO implement sub-classes to dispatch subcommands (user, mail).
class CommandDispatcher(object):
def __init__(self, core):
self.core = core
def _get_service(self, name):
try:
return self.core.getServiceNamed(name)
except KeyError:
return None
def dispatch(self, msg):
cmd = msg[0]
_method = getattr(self, 'do_' + cmd.upper(), None)
if not _method:
return defer.fail(failure.Failure(RuntimeError('No such command')))
return defer.maybeDeferred(_method, *msg)
def do_STATS(self, *parts):
return _format_result(self.core.do_stats())
def do_VERSION(self, *parts):
return _format_result(self.core.do_version())
def do_STATUS(self, *parts):
return _format_result(self.core.do_status())
def do_SHUTDOWN(self, *parts):
return _format_result(self.core.do_shutdown())
def do_USER(self, *parts):
subcmd = parts[1]
user, password = parts[2], parts[3]
bf = self._get_service('bonafide')
if subcmd == 'authenticate':
d = bf.do_authenticate(user, password)
elif subcmd == 'signup':
d = bf.do_signup(user, password)
elif subcmd == 'logout':
d = bf.do_logout(user, password)
elif subcmd == 'active':
d = bf.do_get_active_user()
d.addCallbacks(_format_result, _format_error)
return d
def do_EIP(self, *parts):
subcmd = parts[1]
eip_label = 'eip'
if subcmd == 'enable':
return _format_result(
self.core.do_enable_service(eip_label))
eip = self._get_service(eip_label)
if not eip:
return _format_result('eip: disabled')
if subcmd == 'status':
return _format_result(eip.do_status())
elif subcmd == 'disable':
return _format_result(
self.core.do_disable_service(eip_label))
elif subcmd == 'start':
# TODO --- attempt to get active provider
# TODO or catch the exception and send error
provider = parts[2]
d = eip.do_start(provider)
d.addCallbacks(_format_result, _format_error)
return d
elif subcmd == 'stop':
d = eip.do_stop()
d.addCallbacks(_format_result, _format_error)
return d
def do_MAIL(self, *parts):
subcmd = parts[1]
mail_label = 'mail'
if subcmd == 'enable':
return _format_result(
self.core.do_enable_service(mail_label))
m = self._get_service(mail_label)
bf = self._get_service('bonafide')
if not m:
return _format_result('mail: disabled')
if subcmd == 'status':
return _format_result(m.do_status())
elif subcmd == 'disable':
return _format_result(self.core.do_disable_service(mail_label))
elif subcmd == 'get_imap_token':
d = m.get_imap_token()
d.addCallbacks(_format_result, _format_error)
return d
elif subcmd == 'get_smtp_token':
d = m.get_smtp_token()
d.addCallbacks(_format_result, _format_error)
return d
elif subcmd == 'get_smtp_certificate':
# TODO move to mail service
# TODO should ask for confirmation? like --force or something,
# if we already have a valid one. or better just refuse if cert
# exists.
# TODO how should we pass the userid??
# - Keep an 'active' user in bonafide (last authenticated)
# (doing it now)
# - Get active user from Mail Service (maybe preferred?)
# - Have a command/method to set 'active' user.
@defer.inlineCallbacks
def save_cert(cert_data):
userid, cert_str = cert_data
cert_path = yield m.do_get_smtp_cert_path(userid)
with open(cert_path, 'w') as outf:
outf.write(cert_str)
defer.returnValue('certificate saved to %s' % cert_path)
d = bf.do_get_smtp_cert()
d.addCallback(save_cert)
d.addCallbacks(_format_result, _format_error)
return d
def do_KEYS(self, *parts):
subcmd = parts[1]
keymanager_label = 'keymanager'
km = self._get_service(keymanager_label)
bf = self._get_service('bonafide')
if not km:
return _format_result('keymanager: disabled')
if subcmd == 'list_keys':
d = bf.do_get_active_user()
d.addCallback(km.do_list_keys)
d.addCallbacks(_format_result, _format_error)
return d
def _format_result(result):
return json.dumps({'error': None, 'result': result})
def _format_error(failure):
log.err(failure)
return json.dumps({'error': failure.value.message, 'result': None})
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