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annotate sat/plugins/plugin_xep_0428.py @ 4002:5245b675f7ad

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plugin XEP-0313: don't wait for MAM to be retrieved in connection workflow: MAM retrieval can be long, and can be done after connection, message just need to be sorted when being inserted (i.e. frontends must do insort). To avoid blocking connection for too long and result in bad UX and timeout risk, one2one MAM message are not retrieved in background.
author Goffi <goffi@goffi.org>
date Fri, 10 Mar 2023 17:22:45 +0100
parents 2033fa3c5b85
children 524856bd7b19
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3 # Copyright (C) 2009-2022 Jérôme Poisson (goffi@goffi.org)
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4
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5 # This program is free software: you can redistribute it and/or modify
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6 # it under the terms of the GNU Affero General Public License as published by
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7 # the Free Software Foundation, either version 3 of the License, or
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8 # (at your option) any later version.
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9
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10 # This program is distributed in the hope that it will be useful,
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11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 # GNU Affero General Public License for more details.
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14
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15 # You should have received a copy of the GNU Affero General Public License
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16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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17
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18 from typing import Optional
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19
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20 from twisted.words.protocols.jabber import xmlstream
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21 from twisted.words.xish import domish
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22 from wokkel import disco
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23 from zope.interface import implementer
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24
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25 from sat.core.constants import Const as C
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26 from sat.core.i18n import _
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27 from sat.core.log import getLogger
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28
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29 log = getLogger(__name__)
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30
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31
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32 PLUGIN_INFO = {
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33 C.PI_NAME: "Fallback Indication",
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34 C.PI_IMPORT_NAME: "XEP-0428",
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35 C.PI_TYPE: "XEP",
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36 C.PI_PROTOCOLS: ["XEP-0428"],
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37 C.PI_MAIN: "XEP_0428",
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38 C.PI_HANDLER: "yes",
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39 C.PI_DESCRIPTION: _("""Implementation of XEP-0428 (Fallback Indication)"""),
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40 }
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41
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42 NS_FALLBACK = "urn:xmpp:fallback:0"
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43
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44
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45 class XEP_0428(object):
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46
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47 def __init__(self, host):
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48 log.info(_("XEP-0428 (Fallback Indication) plugin initialization"))
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49 host.registerNamespace("fallback", NS_FALLBACK)
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50
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51 def addFallbackElt(
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52 self,
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53 message_elt: domish.Element,
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54 msg: Optional[str] = None
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55 ) -> None:
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56 """Add the fallback indication element
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57
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58 @param message_elt: <message> element where the indication must be
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59 set
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60 @param msg: message to show as fallback
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61 Will be added as <body>
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62 """
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63 message_elt.addElement((NS_FALLBACK, "fallback"))
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64 if msg is not None:
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65 message_elt.addElement("body", content=msg)
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66
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67 def hasFallback(self, message_elt: domish.Element) -> bool:
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68 """Tell if a message has a fallback indication"""
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69 try:
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70 next(message_elt.elements(NS_FALLBACK, "fallback"))
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71 except StopIteration:
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72 return False
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73 else:
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74 return True
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75
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76 def getHandler(self, __):
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77 return XEP_0428_handler()
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78
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79
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80 @implementer(disco.IDisco)
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81 class XEP_0428_handler(xmlstream.XMPPHandler):
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82
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83 def getDiscoInfo(self, __, target, nodeIdentifier=""):
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84 return [disco.DiscoFeature(NS_FALLBACK)]
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85
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86 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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87 return []