Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0020.py @ 396:cecd22241d56
memory: avoid duplicate in getParamsCategories
author | Goffi <goffi@goffi.org> |
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date | Tue, 04 Oct 2011 23:43:06 +0200 |
parents | 98e1d44d5cd4 |
children | cf005701624b |
rev | line source |
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plugins: feature negociation (XEP-0020) implementation
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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 """ |
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5 SAT plugin for managing xep-0020 |
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6 Copyright (C) 2009, 2010, 2011 Jérôme Poisson (goffi@goffi.org) |
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7 |
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8 This program is free software: you can redistribute it and/or modify |
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9 it under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation, either version 3 of the License, or |
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11 (at your option) any later version. |
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12 |
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13 This program is distributed in the hope that it will be useful, |
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 """ |
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21 |
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22 from logging import debug, info, warning, error |
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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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46 |
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47 class XEP_0020(): |
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48 |
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49 def __init__(self, host): |
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50 info(_("Plugin XEP_0020 initialization")) |
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51 |
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52 def getHandler(self, profile): |
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53 return XEP_0020_handler() |
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54 |
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55 def getFeatureElt(self, elt): |
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56 """Check element's children to find feature elements |
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57 @param elt: domish.Element |
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58 @return: feature elements""" |
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59 return filter(lambda elt: elt.name == 'feature', elt.elements()) |
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60 |
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61 def getChoosedOptions(self, elt): |
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62 """Return choosed feature for feature element |
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63 @param elt: feature domish element |
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64 @return: dict with feature name as key, and choosed option as value""" |
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65 form = data_form.Form.fromElement(elt.firstChildElement()) |
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66 result = {} |
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67 for field in form.fields: |
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68 values = form.fields[field].values |
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69 result[field] = values[0] if values else None |
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70 if len(values)>1: |
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71 warning(_("More than one value choosed for %s, keeping the first one") % field) |
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72 return result |
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73 |
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74 def negociate(self, feature_elt, form_type, negociable_values): |
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75 """Negociate the feature options |
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76 @param feature_elt: feature domish element |
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77 @param form_type: the option to negociate |
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78 @param negociable_values: acceptable values for this negociation""" |
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79 form = data_form.Form.fromElement(feature_elt.firstChildElement()) |
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80 options = [option.value for option in form.fields[form_type].options] |
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81 for value in negociable_values: |
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82 if value in options: |
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83 return value |
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84 return None |
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85 |
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86 def chooseOption(self, options_dict): |
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87 """Build a feature element with choosed options |
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88 @param options_dict: dict with feature as key and choosed option as value""" |
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89 feature_elt = domish.Element((NS_FEATURE_NEG, 'feature')) |
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90 x_form = data_form.Form('submit') |
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91 x_form.makeFields(options_dict) |
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92 feature_elt.addChild(x_form.toElement()) |
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93 return feature_elt |
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94 |
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95 def proposeFeatures(self, options_dict, namespace = None): |
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96 """Build a feature element with options to propose |
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97 @param options_dict: dict with feature as key and list of acceptable options as value |
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98 @param namespace: feature namespace""" |
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99 feature_elt = domish.Element((NS_FEATURE_NEG, 'feature')) |
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100 x_form = data_form.Form('form', formNamespace=namespace) |
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101 for field in options_dict: |
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102 x_form.addField(data_form.Field('list-single', field, |
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103 options=[data_form.Option(_option) for _option in options_dict[field]])) |
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104 feature_elt.addChild(x_form.toElement()) |
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105 return feature_elt |
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106 |
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107 class XEP_0020_handler(XMPPHandler): |
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108 implements(iwokkel.IDisco) |
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109 |
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110 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
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111 return [disco.DiscoFeature(NS_FEATURE_NEG)] |
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112 |
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113 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
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114 return [] |
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115 |