90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
#!/usr/bin/env python3
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# SAT plugin for Explicit Message Encryption
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# Copyright (C) 2009-2026 Jérôme Poisson (goffi@goffi.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from twisted.words.xish import domish
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from libervia.backend.core.i18n import _, D_
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from libervia.backend.core.constants import Const as C
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from libervia.backend.core.log import getLogger
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log = getLogger(__name__)
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PLUGIN_INFO = {
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C.PI_NAME: "Client State Indication",
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C.PI_IMPORT_NAME: "XEP-0352",
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C.PI_TYPE: C.PLUG_TYPE_XEP,
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C.PI_PROTOCOLS: ["XEP-0352"],
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C.PI_DEPENDENCIES: [],
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C.PI_MAIN: "XEP_0352",
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C.PI_HANDLER: "no",
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C.PI_DESCRIPTION: D_(
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"Notify server when frontend is not actively used, to limit "
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"traffic and save bandwidth and battery life"
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),
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}
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NS_CSI = "urn:xmpp:csi:0"
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class XEP_0352(object):
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def __init__(self, host):
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log.info(_("Client State Indication plugin initialization"))
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self.host = host
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host.register_namespace("csi", NS_CSI)
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def is_active(self, client):
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try:
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if not client._xep_0352_enabled:
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return True
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return client._xep_0352_active
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except AttributeError:
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# _xep_0352_active can not be set if is_active is called before
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# profile_connected has been called
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log.debug(
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"is_active called when XEP-0352 plugin has not yet set the " "attributes"
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)
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return True
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def profile_connected(self, client):
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if (NS_CSI, "csi") in client.xmlstream.features:
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log.info(_("Client State Indication is available on this server"))
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client._xep_0352_enabled = True
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client._xep_0352_active = True
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else:
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log.warning(
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_(
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"Client State Indication is not available on this server, some"
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" bandwidth optimisations can't be used."
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)
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)
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client._xep_0352_enabled = False
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def set_inactive(self, client):
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if self.is_active(client):
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inactive_elt = domish.Element((NS_CSI, "inactive"))
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client.send(inactive_elt)
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client._xep_0352_active = False
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log.info("inactive state set")
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def set_active(self, client):
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if not self.is_active(client):
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active_elt = domish.Element((NS_CSI, "active"))
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client.send(active_elt)
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client._xep_0352_active = True
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log.info("active state set")
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