Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_xep_0334.py @ 4259:49019947cc76
component AP Gateway: implement HTTP GET signature.
author | Goffi <goffi@goffi.org> |
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date | Wed, 05 Jun 2024 22:34:09 +0200 |
parents | 3b3cd9453d9b |
children | 0d7bb4df2343 |
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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 typing import Iterable |
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22 from libervia.backend.core.i18n import _, D_ |
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23 from libervia.backend.core.log import getLogger |
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24 |
1279 | 25 log = getLogger(__name__) |
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26 from libervia.backend.core.constants import Const as C |
1279 | 27 |
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28 from libervia.backend.tools.common import data_format |
1279 | 29 |
30 from wokkel import disco, iwokkel | |
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31 |
2698 | 32 from twisted.words.protocols.jabber import xmlstream |
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33 from twisted.words.xish import domish |
3028 | 34 from zope.interface import implementer |
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35 from textwrap import dedent |
1279 | 36 |
37 | |
38 PLUGIN_INFO = { | |
3028 | 39 C.PI_NAME: "Message Processing Hints", |
40 C.PI_IMPORT_NAME: "XEP-0334", | |
41 C.PI_TYPE: "XEP", | |
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42 C.PI_MODES: C.PLUG_MODE_BOTH, |
3028 | 43 C.PI_PROTOCOLS: ["XEP-0334"], |
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44 C.PI_MAIN: "XEP_0334", |
3028 | 45 C.PI_HANDLER: "yes", |
46 C.PI_DESCRIPTION: D_("""Implementation of Message Processing Hints"""), | |
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47 C.PI_USAGE: dedent( |
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48 D_( |
3028 | 49 """\ |
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50 Frontends can use HINT_* constants in mess_data['extra'] in a serialized 'hints' dict. |
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51 Internal plugins can use directly add_hint([HINT_* constant]). |
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52 Will set mess_data['extra']['history'] to 'skipped' when no store is requested and message is not saved in history.""" |
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53 ) |
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54 ), |
1279 | 55 } |
56 | |
3028 | 57 NS_HINTS = "urn:xmpp:hints" |
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58 |
1279 | 59 |
60 class XEP_0334(object): | |
3028 | 61 HINT_NO_PERMANENT_STORE = "no-permanent-store" |
62 HINT_NO_STORE = "no-store" | |
63 HINT_NO_COPY = "no-copy" | |
64 HINT_STORE = "store" | |
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65 HINTS = (HINT_NO_PERMANENT_STORE, HINT_NO_STORE, HINT_NO_COPY, HINT_STORE) |
1279 | 66 |
67 def __init__(self, host): | |
68 log.info(_("Message Processing Hints plugin initialization")) | |
69 self.host = host | |
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70 host.trigger.add("sendMessage", self.send_message_trigger) |
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71 host.trigger.add("message_received", self.message_received_trigger, priority=-1000) |
1279 | 72 |
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73 def get_handler(self, client): |
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74 return XEP_0334_handler() |
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75 |
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76 def add_hint(self, mess_data, hint): |
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77 if hint == self.HINT_NO_COPY and not mess_data["to"].resource: |
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78 log.error( |
3028 | 79 "{hint} can only be used with full jids! Ignoring it.".format(hint=hint) |
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80 ) |
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81 return |
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82 hints = mess_data.setdefault("hints", set()) |
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83 if hint in self.HINTS: |
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84 hints.add(hint) |
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85 else: |
3028 | 86 log.error("Unknown hint: {}".format(hint)) |
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87 |
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88 def add_hint_elements(self, message_elt: domish.Element, hints: Iterable[str]) -> None: |
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89 """Add hints elements to message stanza |
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90 |
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91 @param message_elt: stanza where hints must be added |
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92 @param hints: hints to add |
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93 """ |
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94 for hint in hints: |
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95 if not list(message_elt.elements(NS_HINTS, hint)): |
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96 message_elt.addElement((NS_HINTS, hint)) |
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97 else: |
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98 log.debug(f'Not adding {hint!r} hint: it is already present in <message>') |
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99 |
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100 def _send_post_xml_treatment(self, mess_data): |
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101 if "hints" in mess_data: |
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102 self.add_hint_elements(mess_data["xml"], mess_data["hints"]) |
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103 return mess_data |
1279 | 104 |
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105 def send_message_trigger( |
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106 self, client, mess_data, pre_xml_treatments, post_xml_treatments |
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107 ): |
1279 | 108 """Add the hints element to the message to be sent""" |
3028 | 109 if "hints" in mess_data["extra"]: |
110 for hint in data_format.dict2iter("hints", mess_data["extra"], pop=True): | |
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111 self.add_hint(hint) |
1279 | 112 |
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113 post_xml_treatments.addCallback(self._send_post_xml_treatment) |
1279 | 114 return True |
115 | |
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116 def _received_skip_history(self, mess_data): |
3028 | 117 mess_data["history"] = C.HISTORY_SKIP |
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118 return mess_data |
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119 |
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120 def message_received_trigger(self, client, message_elt, post_treat): |
1279 | 121 """Check for hints in the received message""" |
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122 for elt in message_elt.elements(): |
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123 if elt.uri == NS_HINTS and elt.name in ( |
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124 self.HINT_NO_PERMANENT_STORE, |
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125 self.HINT_NO_STORE, |
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126 ): |
3028 | 127 log.debug("history will be skipped for this message, as requested") |
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128 post_treat.addCallback(self._received_skip_history) |
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129 break |
1279 | 130 return True |
131 | |
132 | |
3028 | 133 @implementer(iwokkel.IDisco) |
2698 | 134 class XEP_0334_handler(xmlstream.XMPPHandler): |
1279 | 135 |
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136 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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137 return [disco.DiscoFeature(NS_HINTS)] |
1279 | 138 |
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139 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
1279 | 140 return [] |