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annotate libervia/backend/plugins/plugin_xep_0352.py @ 4202:b26339343076

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core: use a user specific directory for PID file: default location of pid file is now specific to logged user, this allow to run several instances of Libervia by different users on the same machine without PID conflicts.
author Goffi <goffi@goffi.org>
date Sun, 14 Jan 2024 17:48:02 +0100
parents 4b842c1fb686
children 0d7bb4df2343
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT plugin for Explicit Message Encryption
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from twisted.words.xish import domish
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21 from libervia.backend.core.i18n import _, D_
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22 from libervia.backend.core.constants import Const as C
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23 from libervia.backend.core.log import getLogger
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24
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25 log = getLogger(__name__)
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26
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27 PLUGIN_INFO = {
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28 C.PI_NAME: "Client State Indication",
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29 C.PI_IMPORT_NAME: "XEP-0352",
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30 C.PI_TYPE: C.PLUG_TYPE_XEP,
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31 C.PI_PROTOCOLS: ["XEP-0352"],
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32 C.PI_DEPENDENCIES: [],
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33 C.PI_MAIN: "XEP_0352",
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34 C.PI_HANDLER: "no",
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35 C.PI_DESCRIPTION: D_("Notify server when frontend is not actively used, to limit "
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36 "traffic and save bandwidth and battery life"),
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37 }
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38
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39 NS_CSI = "urn:xmpp:csi:0"
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41
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42 class XEP_0352(object):
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43
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44 def __init__(self, host):
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45 log.info(_("Client State Indication plugin initialization"))
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46 self.host = host
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47 host.register_namespace("csi", NS_CSI)
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48
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49 def is_active(self, client):
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50 try:
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51 if not client._xep_0352_enabled:
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52 return True
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53 return client._xep_0352_active
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54 except AttributeError:
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55 # _xep_0352_active can not be set if is_active is called before
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56 # profile_connected has been called
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57 log.debug("is_active called when XEP-0352 plugin has not yet set the "
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58 "attributes")
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59 return True
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60
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61 def profile_connected(self, client):
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62 if (NS_CSI, 'csi') in client.xmlstream.features:
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63 log.info(_("Client State Indication is available on this server"))
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64 client._xep_0352_enabled = True
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65 client._xep_0352_active = True
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66 else:
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67 log.warning(_("Client State Indication is not available on this server, some"
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68 " bandwidth optimisations can't be used."))
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69 client._xep_0352_enabled = False
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70
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71 def set_inactive(self, client):
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72 if self.is_active(client):
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73 inactive_elt = domish.Element((NS_CSI, 'inactive'))
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74 client.send(inactive_elt)
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75 client._xep_0352_active = False
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76 log.info("inactive state set")
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77
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78 def set_active(self, client):
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79 if not self.is_active(client):
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80 active_elt = domish.Element((NS_CSI, 'active'))
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81 client.send(active_elt)
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82 client._xep_0352_active = True
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83 log.info("active state set")