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# This file is part of Gajim.
#
# Gajim 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; version 3 only.
#
# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
# XEP-0030: Service Discovery
from __future__ import annotations
import nbxmpp
from nbxmpp.errors import is_error
from nbxmpp.errors import StanzaError
from nbxmpp.namespaces import Namespace
from nbxmpp.protocol import Iq
from nbxmpp.protocol import JID
from nbxmpp.structs import DiscoInfo
from nbxmpp.structs import IqProperties
from nbxmpp.structs import StanzaHandler
from nbxmpp.task import Task
from gajim.common import app
from gajim.common import types
from gajim.common.events import MucDiscoUpdate
from gajim.common.events import ServerDiscoReceived
from gajim.common.modules.base import BaseModule
from gajim.common.modules.util import as_task
class Discovery(BaseModule):
_nbxmpp_extends = 'Discovery'
_nbxmpp_methods = [
'disco_info',
'disco_items',
]
def __init__(self, con: types.Client) -> None:
BaseModule.__init__(self, con)
self.handlers = [
StanzaHandler(name='iq',
callback=self._answer_disco_info,
typ='get',
ns=Namespace.DISCO_INFO),
StanzaHandler(name='iq',
callback=self._answer_disco_items,
typ='get',
ns=Namespace.DISCO_ITEMS),
]
self._account_info: DiscoInfo | None = None
self._server_info: DiscoInfo | None = None
@property
def account_info(self) -> DiscoInfo | None:
return self._account_info
@property
def server_info(self) -> DiscoInfo | None:
return self._server_info
def discover_server_items(self) -> None:
server = self._con.get_own_jid().domain
self.disco_items(server, callback=self._server_items_received)
def _server_items_received(self, task: Task) -> None:
try:
result = task.finish()
except StanzaError as error:
self._log.warning('Server disco failed')
self._log.error(error)
return
self._log.info('Server items received')
self._log.debug(result)
for item in result.items:
if item.node is not None:
# Only disco components
continue
self.disco_info(item.jid, callback=self._server_items_info_received)
def _server_items_info_received(self, task: Task) -> None:
try:
result = task.finish()
except StanzaError as error:
self._log.warning('Server item disco info failed')
self._log.warning(error)
return
self._log.info('Server item info received: %s', result.jid)
self._parse_transports(result)
try:
self._con.get_module('MUC').pass_disco(result)
self._con.get_module('HTTPUpload').pass_disco(result)
self._con.get_module('Bytestream').pass_disco(result)
except nbxmpp.NodeProcessed:
pass
app.ged.raise_event(ServerDiscoReceived())
def discover_account_info(self) -> None:
own_jid = self._con.get_own_jid().bare
self.disco_info(own_jid, callback=self._account_info_received)
def _account_info_received(self, task: Task) -> None:
try:
result = task.finish()
except StanzaError as error:
self._log.warning('Account disco info failed')
self._log.warning(error)
return
self._log.info('Account info received: %s', result.jid)
self._account_info = result
self._con.get_module('MAM').pass_disco(result)
self._con.get_module('PEP').pass_disco(result)
self._con.get_module('PubSub').pass_disco(result)
self._con.get_module('Bookmarks').pass_disco(result)
self._con.get_module('VCardAvatars').pass_disco(result)
self._con.get_module('Caps').update_caps()
def discover_server_info(self) -> None:
# Calling this method starts the connect_maschine()
server = self._con.get_own_jid().domain
self.disco_info(server, callback=self._server_info_received)
def _server_info_received(self, task: Task) -> None:
try:
result = task.finish()
except StanzaError as error:
self._log.error('Server disco info failed')
self._log.error(error)
return
self._log.info('Server info received: %s', result.jid)
self._server_info = result
self._con.get_module('SecLabels').pass_disco(result)
self._con.get_module('Blocking').pass_disco(result)
self._con.get_module('VCardTemp').pass_disco(result)
self._con.get_module('Carbons').pass_disco(result)
self._con.get_module('HTTPUpload').pass_disco(result)
self._con.get_module('Register').pass_disco(result)
self._con.connect_machine(restart=True)
def _parse_transports(self, info: DiscoInfo) -> None:
for identity in info.identities:
if identity.category not in ('gateway', 'headline'):
continue
self._log.info('Found transport: %s %s %s',
info.jid, identity.category, identity.type)
jid = str(info.jid)
if jid not in app.transport_type:
app.transport_type[jid] = identity.type
if identity.type in self._con.available_transports:
self._con.available_transports[identity.type].append(jid)
else:
self._con.available_transports[identity.type] = [jid]
def _answer_disco_items(self,
_con: types.xmppClient,
stanza: Iq,
_properties: IqProperties
) -> None:
from_ = stanza.getFrom()
self._log.info('Answer disco items to %s', from_)
node = stanza.getTagAttr('query', 'node')
if node is None:
result = stanza.buildReply('result')
self._con.connection.send(result)
raise nbxmpp.NodeProcessed
def _answer_disco_info(self,
_con: types.xmppClient,
stanza: Iq,
_properties: IqProperties
) -> None:
from_ = stanza.getFrom()
self._log.info('Answer disco info %s', from_)
if str(from_).startswith('echo.'):
# Service that echos all stanzas, ignore it
raise nbxmpp.NodeProcessed
@as_task
def disco_muc(self,
jid: JID | str,
request_vcard: bool = False,
allow_redirect: bool = False
):
_task = yield # noqa: F841
self._log.info('Request MUC info for %s', jid)
result = yield self._nbxmpp('MUC').request_info(
jid,
request_vcard=request_vcard,
allow_redirect=allow_redirect)
if is_error(result):
raise result
if result.redirected:
self._log.info('MUC info received after redirect: %s -> %s',
jid, result.info.jid)
else:
self._log.info('MUC info received: %s', result.info.jid)
app.storage.cache.set_last_disco_info(result.info.jid, result.info)
if result.vcard is not None:
avatar, avatar_sha = result.vcard.get_avatar()
if avatar is not None:
if not app.app.avatar_storage.avatar_exists(avatar_sha):
app.app.avatar_storage.save_avatar(avatar)
app.storage.cache.set_muc(
self._account, result.info.jid, 'avatar', avatar_sha)
app.app.avatar_storage.invalidate_cache(result.info.jid)
self._con.get_module('VCardAvatars').muc_disco_info_update(result.info)
app.ged.raise_event(MucDiscoUpdate(
account=self._account,
jid=result.info.jid))
yield result
@as_task
def disco_contact(self, contact: types.ContactT):
_task = yield # noqa: F841
result = yield self.disco_info(contact.jid)
if is_error(result):
raise result
self._log.info('Disco Info received: %s', contact.jid)
app.storage.cache.set_last_disco_info(result.jid,
result,
cache_only=True)
contact = self._con.get_module('Contacts').get_contact(result.jid)
contact.notify('caps-update')
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