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# Copyright (C) 2021 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# 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/>.
from nbxmpp.protocol import Iq
from nbxmpp.protocol import NodeProcessed
from nbxmpp.protocol import Error
from nbxmpp.protocol import ERR_FORBIDDEN
from nbxmpp.protocol import ERR_SERVICE_UNAVAILABLE
from nbxmpp.namespaces import Namespace
from nbxmpp.task import iq_request_task
from nbxmpp.structs import StanzaHandler
from nbxmpp.errors import MalformedStanzaError
from nbxmpp.errors import StanzaError
from nbxmpp.modules.base import BaseModule
from nbxmpp.modules.date_and_time import parse_datetime
from nbxmpp.modules.date_and_time import create_tzinfo
from nbxmpp.modules.date_and_time import get_local_time
class EntityTime(BaseModule):
def __init__(self, client):
BaseModule.__init__(self, client)
self._client = client
self.handlers = [
StanzaHandler(name='iq',
callback=self._answer_request,
priority=60,
typ='get',
ns=Namespace.TIME),
]
self._enabled = False
self._allow_reply_func = None
def disable(self):
self._enabled = False
def enable(self):
self._enabled = True
def set_allow_reply_func(self, func):
self._allow_reply_func = func
@iq_request_task
def request_entity_time(self, jid):
_task = yield
response = yield _make_request(jid)
if response.isError():
raise StanzaError(response)
yield _parse_response(response)
def _answer_request(self, _con, stanza, _properties):
self._log.info('Request received from %s', stanza.getFrom())
if not self._enabled:
self._client.send_stanza(Error(stanza, ERR_SERVICE_UNAVAILABLE))
raise NodeProcessed
if self._allow_reply_func is not None:
if not self._allow_reply_func(stanza.getFrom()):
self._client.send_stanza(Error(stanza, ERR_FORBIDDEN))
raise NodeProcessed
time, tzo = get_local_time()
iq = stanza.buildSimpleReply('result')
time_node = iq.addChild('time', namespace=Namespace.TIME)
time_node.setTagData('utc', time)
time_node.setTagData('tzo', tzo)
self._log.info('Send time: %s %s', time, tzo)
self._client.send_stanza(iq)
raise NodeProcessed
def _make_request(jid):
iq = Iq('get', to=jid)
iq.addChild('time', namespace=Namespace.TIME)
return iq
def _parse_response(response):
time_ = response.getTag('time')
if not time_:
raise MalformedStanzaError('time node missing', response)
tzo = time_.getTagData('tzo')
if not tzo:
raise MalformedStanzaError('tzo node or data missing', response)
remote_tz = create_tzinfo(tz_string=tzo)
if remote_tz is None:
raise MalformedStanzaError('invalid tzo data', response)
utc_time = time_.getTagData('utc')
if not utc_time:
raise MalformedStanzaError('utc node or data missing', response)
date_time = parse_datetime(utc_time, check_utc=True)
if date_time is None:
raise MalformedStanzaError('invalid timezone definition', response)
date_time = date_time.astimezone(remote_tz)
return date_time.strftime('%c %Z')
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