Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0334.py @ 3836:e183f1fbfa8d
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author | Goffi <goffi@goffi.org> |
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date | Sun, 10 Jul 2022 16:15:09 +0200 |
parents | 68a11b95a7d3 |
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3028 | 1 #!/usr/bin/env python3 |
3137 | 2 |
1279 | 3 |
4 # SAT plugin for Delayed Delivery (XEP-0334) | |
3479 | 5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
1766 | 6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org) |
1279 | 7 |
8 # This program is free software: you can redistribute it and/or modify | |
9 # it under the terms of the GNU Affero General Public License as published by | |
10 # the Free Software Foundation, either version 3 of the License, or | |
11 # (at your option) any later version. | |
12 | |
13 # This program is distributed in the hope that it will be useful, | |
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 # GNU Affero General Public License for more details. | |
17 | |
18 # You should have received a copy of the GNU Affero General Public License | |
19 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | |
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21 from sat.core.i18n import _, D_ |
1279 | 22 from sat.core.log import getLogger |
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23 |
1279 | 24 log = getLogger(__name__) |
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25 from sat.core.constants import Const as C |
1279 | 26 |
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27 from sat.tools.common import data_format |
1279 | 28 |
29 from wokkel import disco, iwokkel | |
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30 |
2698 | 31 from twisted.words.protocols.jabber import xmlstream |
3028 | 32 from zope.interface import implementer |
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33 from textwrap import dedent |
1279 | 34 |
35 | |
36 PLUGIN_INFO = { | |
3028 | 37 C.PI_NAME: "Message Processing Hints", |
38 C.PI_IMPORT_NAME: "XEP-0334", | |
39 C.PI_TYPE: "XEP", | |
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40 C.PI_MODES: C.PLUG_MODE_BOTH, |
3028 | 41 C.PI_PROTOCOLS: ["XEP-0334"], |
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42 C.PI_MAIN: "XEP_0334", |
3028 | 43 C.PI_HANDLER: "yes", |
44 C.PI_DESCRIPTION: D_("""Implementation of Message Processing Hints"""), | |
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45 C.PI_USAGE: dedent( |
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46 D_( |
3028 | 47 """\ |
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48 Frontends can use HINT_* constants in mess_data['extra'] in a serialized 'hints' dict. |
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49 Internal plugins can use directly addHint([HINT_* constant]). |
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50 Will set mess_data['extra']['history'] to 'skipped' when no store is requested and message is not saved in history.""" |
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51 ) |
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52 ), |
1279 | 53 } |
54 | |
3028 | 55 NS_HINTS = "urn:xmpp:hints" |
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56 |
1279 | 57 |
58 class XEP_0334(object): | |
3028 | 59 HINT_NO_PERMANENT_STORE = "no-permanent-store" |
60 HINT_NO_STORE = "no-store" | |
61 HINT_NO_COPY = "no-copy" | |
62 HINT_STORE = "store" | |
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63 HINTS = (HINT_NO_PERMANENT_STORE, HINT_NO_STORE, HINT_NO_COPY, HINT_STORE) |
1279 | 64 |
65 def __init__(self, host): | |
66 log.info(_("Message Processing Hints plugin initialization")) | |
67 self.host = host | |
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68 host.trigger.add("sendMessage", self.sendMessageTrigger) |
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69 host.trigger.add("messageReceived", self.messageReceivedTrigger, priority=-1000) |
1279 | 70 |
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71 def getHandler(self, client): |
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72 return XEP_0334_handler() |
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73 |
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74 def addHint(self, mess_data, hint): |
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75 if hint == self.HINT_NO_COPY and not mess_data["to"].resource: |
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76 log.error( |
3028 | 77 "{hint} can only be used with full jids! Ignoring it.".format(hint=hint) |
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78 ) |
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79 return |
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80 hints = mess_data.setdefault("hints", set()) |
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81 if hint in self.HINTS: |
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82 hints.add(hint) |
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83 else: |
3028 | 84 log.error("Unknown hint: {}".format(hint)) |
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85 |
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86 def addHintElements(self, message_elt, hints): |
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87 """Add hints elements to message stanza |
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88 |
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89 @param message_elt(domish.Element): stanza where hints must be added |
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90 @param hints(iterable(unicode)): hints to add |
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91 """ |
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92 for hint in hints: |
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93 message_elt.addElement((NS_HINTS, hint)) |
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94 |
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95 def _sendPostXmlTreatment(self, mess_data): |
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96 if "hints" in mess_data: |
3028 | 97 self.addHintElements(mess_data["xml"], mess_data["hints"]) |
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98 return mess_data |
1279 | 99 |
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100 def sendMessageTrigger( |
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101 self, client, mess_data, pre_xml_treatments, post_xml_treatments |
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102 ): |
1279 | 103 """Add the hints element to the message to be sent""" |
3028 | 104 if "hints" in mess_data["extra"]: |
105 for hint in data_format.dict2iter("hints", mess_data["extra"], pop=True): | |
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106 self.addHint(hint) |
1279 | 107 |
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108 post_xml_treatments.addCallback(self._sendPostXmlTreatment) |
1279 | 109 return True |
110 | |
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111 def _receivedSkipHistory(self, mess_data): |
3028 | 112 mess_data["history"] = C.HISTORY_SKIP |
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113 return mess_data |
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114 |
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115 def messageReceivedTrigger(self, client, message_elt, post_treat): |
1279 | 116 """Check for hints in the received message""" |
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117 for elt in message_elt.elements(): |
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118 if elt.uri == NS_HINTS and elt.name in ( |
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119 self.HINT_NO_PERMANENT_STORE, |
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120 self.HINT_NO_STORE, |
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121 ): |
3028 | 122 log.debug("history will be skipped for this message, as requested") |
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123 post_treat.addCallback(self._receivedSkipHistory) |
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124 break |
1279 | 125 return True |
126 | |
127 | |
3028 | 128 @implementer(iwokkel.IDisco) |
2698 | 129 class XEP_0334_handler(xmlstream.XMPPHandler): |
1279 | 130 |
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131 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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132 return [disco.DiscoFeature(NS_HINTS)] |
1279 | 133 |
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134 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
1279 | 135 return [] |