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annotate src/plugins/plugin_xep_0020.py @ 1341:6dbeb2ef966c frontends_multi_profiles

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plugin XEP-0054: "nick" is now keeped in cache: - cache now manage different kind of data (instead of only avatar) - PeristentBinaryDict is used to keep cache (because we now store a dict, not just strings) - CACHED_DATA is a set of data kept in cache (only nick and avatar so far) - a signal update flag is put on "nick" - data in cache are reset if they are not present in cache (this avoid to keep the old value)
author Goffi <goffi@goffi.org>
date Tue, 24 Feb 2015 17:01:33 +0100
parents 301b342c697a
children 069ad98b360d
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for managing xep-0020
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 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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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 sat.core.i18n import _
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21 from sat.core.log import getLogger
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22 log = getLogger(__name__)
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23 from twisted.words.protocols.jabber import client, jid
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24 from twisted.words.xish import domish
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25
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26 from zope.interface import implements
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27
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28 try:
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29 from twisted.words.protocols.xmlstream import XMPPHandler
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30 except ImportError:
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31 from wokkel.subprotocols import XMPPHandler
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32
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33 from wokkel import disco, iwokkel, data_form
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34
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35 NS_FEATURE_NEG = 'http://jabber.org/protocol/feature-neg'
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36
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37 PLUGIN_INFO = {
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38 "name": "XEP 0020 Plugin",
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39 "import_name": "XEP-0020",
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40 "type": "XEP",
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41 "protocols": ["XEP-0020"],
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42 "main": "XEP_0020",
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43 "handler": "yes",
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44 "description": _("""Implementation of Feature Negotiation""")
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45 }
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47
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48 class XEP_0020(object):
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49
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50 def __init__(self, host):
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51 log.info(_("Plugin XEP_0020 initialization"))
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52
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53 def getHandler(self, profile):
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54 return XEP_0020_handler()
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55
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56 def getFeatureElt(self, elt):
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57 """Check element's children to find feature elements
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58 @param elt: domish.Element
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59 @return: feature elements"""
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60 return [child for child in elt.elements() if child.name == 'feature']
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61
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62 def getChoosedOptions(self, elt):
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63 """Return choosed feature for feature element
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64 @param elt: feature domish element
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65 @return: dict with feature name as key, and choosed option as value"""
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66 form = data_form.Form.fromElement(elt.firstChildElement())
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67 result = {}
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68 for field in form.fields:
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69 values = form.fields[field].values
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70 result[field] = values[0] if values else None
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71 if len(values) > 1:
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72 log.warning(_("More than one value choosed for %s, keeping the first one") % field)
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73 return result
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74
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75 def negociate(self, feature_elt, form_type, negociable_values):
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76 """Negociate the feature options
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77 @param feature_elt: feature domish element
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78 @param form_type: the option to negociate
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79 @param negociable_values: acceptable values for this negociation"""
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80 form = data_form.Form.fromElement(feature_elt.firstChildElement())
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81 options = [option.value for option in form.fields[form_type].options]
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82 for value in negociable_values:
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83 if value in options:
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84 return value
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85 return None
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86
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87 def chooseOption(self, options_dict):
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88 """Build a feature element with choosed options
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89 @param options_dict: dict with feature as key and choosed option as value"""
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90 feature_elt = domish.Element((NS_FEATURE_NEG, 'feature'))
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91 x_form = data_form.Form('submit')
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92 x_form.makeFields(options_dict)
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93 feature_elt.addChild(x_form.toElement())
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94 return feature_elt
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95
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96 def proposeFeatures(self, options_dict, namespace=None):
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97 """Build a feature element with options to propose
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98 @param options_dict: dict with feature as key and list of acceptable options as value
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99 @param namespace: feature namespace"""
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100 feature_elt = domish.Element((NS_FEATURE_NEG, 'feature'))
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101 x_form = data_form.Form('form', formNamespace=namespace)
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102 for field in options_dict:
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103 x_form.addField(data_form.Field('list-single', field,
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104 options=[data_form.Option(_option) for _option in options_dict[field]]))
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105 feature_elt.addChild(x_form.toElement())
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106 return feature_elt
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107
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108
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109 class XEP_0020_handler(XMPPHandler):
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110 implements(iwokkel.IDisco)
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111
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112 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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113 return [disco.DiscoFeature(NS_FEATURE_NEG)]
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114
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115 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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116 return []