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# Copyright (C) 2021 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import annotations
from typing import TYPE_CHECKING
from collections.abc import Callable
from nbxmpp.errors import MalformedStanzaError
from nbxmpp.errors import StanzaError
from nbxmpp.modules.base import BaseModule
from nbxmpp.modules.date_and_time import create_tzinfo
from nbxmpp.modules.date_and_time import get_local_time
from nbxmpp.modules.date_and_time import parse_datetime
from nbxmpp.namespaces import Namespace
from nbxmpp.protocol import ERR_FORBIDDEN
from nbxmpp.protocol import ERR_SERVICE_UNAVAILABLE
from nbxmpp.protocol import Error
from nbxmpp.protocol import Iq
from nbxmpp.protocol import JID
from nbxmpp.protocol import NodeProcessed
from nbxmpp.structs import IqProperties
from nbxmpp.structs import StanzaHandler
from nbxmpp.task import iq_request_task
if TYPE_CHECKING:
from nbxmpp.client import Client
class EntityTime(BaseModule):
def __init__(self, client: Client) -> None:
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: Callable[..., bool] | None = None
def disable(self) -> None:
self._enabled = False
def enable(self) -> None:
self._enabled = True
def set_allow_reply_func(self, func: Callable[..., bool]) -> None:
self._allow_reply_func = func
@iq_request_task
def request_entity_time(self, jid: JID):
_task = yield
response = yield _make_request(jid)
if response.isError():
raise StanzaError(response)
yield _parse_response(response)
def _answer_request(
self, _client: Client, stanza: Iq, _properties: IqProperties
) -> None:
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: JID) -> Iq:
iq = Iq("get", to=jid)
iq.addChild("time", namespace=Namespace.TIME)
return iq
def _parse_response(response: Iq) -> str:
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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