Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_xep_0352.py @ 4212:5f2d496c633f
core: get rid of `pickle`:
Use of `pickle` to serialise data was a technical legacy that was causing trouble to store
in database, to update (if a class was serialised, a change could break update), and to
security (pickle can lead to code execution).
This patch remove all use of Pickle in favour in JSON, notably:
- for caching data, a Pydantic model is now used instead
- for SQLAlchemy model, the LegacyPickle is replaced by JSON serialisation
- in XEP-0373 a class `PublicKeyMetadata` was serialised. New method `from_dict` and
`to_dict` method have been implemented to do serialisation.
- new methods to (de)serialise data can now be specified with Identity data types. It is
notably used to (de)serialise `path` of avatars.
A migration script has been created to convert data (for upgrade or downgrade), with
special care for XEP-0373 case. Depending of size of database, this migration script can
be long to run.
rel 443
author | Goffi <goffi@goffi.org> |
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date | Fri, 23 Feb 2024 13:31:04 +0100 |
parents | 4b842c1fb686 |
children | 0d7bb4df2343 |
rev | line source |
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3028 | 1 #!/usr/bin/env python3 |
3137 | 2 |
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3 |
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4 # SAT plugin for Explicit Message Encryption |
3479 | 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 = { |
3028 | 28 C.PI_NAME: "Client State Indication", |
29 C.PI_IMPORT_NAME: "XEP-0352", | |
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30 C.PI_TYPE: C.PLUG_TYPE_XEP, |
3028 | 31 C.PI_PROTOCOLS: ["XEP-0352"], |
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32 C.PI_DEPENDENCIES: [], |
3028 | 33 C.PI_MAIN: "XEP_0352", |
34 C.PI_HANDLER: "no", | |
35 C.PI_DESCRIPTION: D_("Notify server when frontend is not actively used, to limit " | |
36 "traffic and save bandwidth and battery life"), | |
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37 } |
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38 |
3028 | 39 NS_CSI = "urn:xmpp:csi:0" |
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40 |
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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): |
3028 | 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 " |
3028 | 58 "attributes") |
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59 return True |
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60 |
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61 def profile_connected(self, client): |
3028 | 62 if (NS_CSI, 'csi') in client.xmlstream.features: |
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: |
3028 | 67 log.warning(_("Client State Indication is not available on this server, some" |
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): |
3028 | 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 |
3028 | 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): |
3028 | 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 |
3028 | 83 log.info("active state set") |