Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0334.py @ 2652:baccc27d5c5c
plugin XEP-0334: added a method to add hint directly to elements (i.e. on domish.Element instead of message data)
author | Goffi <goffi@goffi.org> |
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date | Sat, 11 Aug 2018 18:24:55 +0200 |
parents | 56f94936df1e |
children | 5060cbeec01e |
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1934
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1 #!/usr/bin/env python2 |
1279 | 2 # -*- coding: utf-8 -*- |
3 | |
4 # SAT plugin for Delayed Delivery (XEP-0334) | |
2483 | 5 # Copyright (C) 2009-2018 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 |
1279 | 31 try: |
32 from twisted.words.protocols.xmlstream import XMPPHandler | |
33 except ImportError: | |
34 from wokkel.subprotocols import XMPPHandler | |
35 from zope.interface import implements | |
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36 from textwrap import dedent |
1279 | 37 |
38 | |
39 PLUGIN_INFO = { | |
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40 C.PI_NAME: u"Message Processing Hints", |
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41 C.PI_IMPORT_NAME: u"XEP-0334", |
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42 C.PI_TYPE: u"XEP", |
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43 C.PI_PROTOCOLS: [u"XEP-0334"], |
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44 C.PI_MAIN: "XEP_0334", |
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45 C.PI_HANDLER: u"yes", |
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46 C.PI_DESCRIPTION: D_(u"""Implementation of Message Processing Hints"""), |
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47 C.PI_USAGE: dedent( |
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48 D_( |
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49 u"""\ |
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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 addHint([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 | |
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57 NS_HINTS = u"urn:xmpp:hints" |
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58 |
1279 | 59 |
60 class XEP_0334(object): | |
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61 HINT_NO_PERMANENT_STORE = u"no-permanent-store" |
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62 HINT_NO_STORE = u"no-store" |
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63 HINT_NO_COPY = u"no-copy" |
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64 HINT_STORE = u"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.sendMessageTrigger) |
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71 host.trigger.add("MessageReceived", self.messageReceivedTrigger, priority=-1000) |
1279 | 72 |
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73 def getHandler(self, client): |
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74 return XEP_0334_handler() |
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75 |
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76 def addHint(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( |
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79 u"{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: |
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86 log.error(u"Unknown hint: {}".format(hint)) |
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87 |
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88 def addHintElements(self, message_elt, hints): |
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89 """Add hints elements to message stanza |
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90 |
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91 @param message_elt(domish.Element): stanza where hints must be added |
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92 @param hints(iterable(unicode)): hints to add |
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93 """ |
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94 for hint in hints: |
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95 message_elt.addElement((NS_HINTS, hint)) |
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96 |
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97 def _sendPostXmlTreatment(self, mess_data): |
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98 if "hints" in mess_data: |
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99 self.addHintElements(mess_data[u"xml"], mess_data[u"hints"]) |
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100 return mess_data |
1279 | 101 |
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102 def sendMessageTrigger( |
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103 self, client, mess_data, pre_xml_treatments, post_xml_treatments |
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104 ): |
1279 | 105 """Add the hints element to the message to be sent""" |
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106 if u"hints" in mess_data[u"extra"]: |
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107 for hint in data_format.dict2iter(u"hints", mess_data[u"extra"], pop=True): |
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108 self.addHint(hint) |
1279 | 109 |
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110 post_xml_treatments.addCallback(self._sendPostXmlTreatment) |
1279 | 111 return True |
112 | |
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113 def _receivedSkipHistory(self, mess_data): |
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114 mess_data[u"history"] = C.HISTORY_SKIP |
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115 return mess_data |
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116 |
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117 def messageReceivedTrigger(self, client, message_elt, post_treat): |
1279 | 118 """Check for hints in the received message""" |
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119 for elt in message_elt.elements(): |
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120 if elt.uri == NS_HINTS and elt.name in ( |
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121 self.HINT_NO_PERMANENT_STORE, |
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122 self.HINT_NO_STORE, |
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123 ): |
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124 log.debug(u"history will be skipped for this message, as requested") |
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125 post_treat.addCallback(self._receivedSkipHistory) |
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126 break |
1279 | 127 return True |
128 | |
129 | |
130 class XEP_0334_handler(XMPPHandler): | |
131 implements(iwokkel.IDisco) | |
132 | |
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133 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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134 return [disco.DiscoFeature(NS_HINTS)] |
1279 | 135 |
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136 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
1279 | 137 return [] |