Mercurial > libervia-backend
view src/plugins/plugin_xep_0020.py @ 994:652c01ca69b1
core (log): configuration and environment variables are now checked for log level and colors:
- variable change logs behaviour, so far only level and colors are implemented
- configuration use log_[name], for example you can put log_level=debug in sat.conf (section [DEFAULT]) to see all levels
- environment variables use SAT_LOG_[NAME]: e.g. SAT_LOG_LEVEL=debug
- colors can be true, false or force to force colors even if stdout is not a tty
author | Goffi <goffi@goffi.org> |
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date | Sat, 19 Apr 2014 20:11:23 +0200 |
parents | 301b342c697a |
children | 069ad98b360d |
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#!/usr/bin/python # -*- coding: utf-8 -*- # SAT plugin for managing xep-0020 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. from sat.core.i18n import _ from sat.core.log import getLogger log = getLogger(__name__) from twisted.words.protocols.jabber import client, jid from twisted.words.xish import domish from zope.interface import implements try: from twisted.words.protocols.xmlstream import XMPPHandler except ImportError: from wokkel.subprotocols import XMPPHandler from wokkel import disco, iwokkel, data_form NS_FEATURE_NEG = 'http://jabber.org/protocol/feature-neg' PLUGIN_INFO = { "name": "XEP 0020 Plugin", "import_name": "XEP-0020", "type": "XEP", "protocols": ["XEP-0020"], "main": "XEP_0020", "handler": "yes", "description": _("""Implementation of Feature Negotiation""") } class XEP_0020(object): def __init__(self, host): log.info(_("Plugin XEP_0020 initialization")) def getHandler(self, profile): return XEP_0020_handler() def getFeatureElt(self, elt): """Check element's children to find feature elements @param elt: domish.Element @return: feature elements""" return [child for child in elt.elements() if child.name == 'feature'] def getChoosedOptions(self, elt): """Return choosed feature for feature element @param elt: feature domish element @return: dict with feature name as key, and choosed option as value""" form = data_form.Form.fromElement(elt.firstChildElement()) result = {} for field in form.fields: values = form.fields[field].values result[field] = values[0] if values else None if len(values) > 1: log.warning(_("More than one value choosed for %s, keeping the first one") % field) return result def negociate(self, feature_elt, form_type, negociable_values): """Negociate the feature options @param feature_elt: feature domish element @param form_type: the option to negociate @param negociable_values: acceptable values for this negociation""" form = data_form.Form.fromElement(feature_elt.firstChildElement()) options = [option.value for option in form.fields[form_type].options] for value in negociable_values: if value in options: return value return None def chooseOption(self, options_dict): """Build a feature element with choosed options @param options_dict: dict with feature as key and choosed option as value""" feature_elt = domish.Element((NS_FEATURE_NEG, 'feature')) x_form = data_form.Form('submit') x_form.makeFields(options_dict) feature_elt.addChild(x_form.toElement()) return feature_elt def proposeFeatures(self, options_dict, namespace=None): """Build a feature element with options to propose @param options_dict: dict with feature as key and list of acceptable options as value @param namespace: feature namespace""" feature_elt = domish.Element((NS_FEATURE_NEG, 'feature')) x_form = data_form.Form('form', formNamespace=namespace) for field in options_dict: x_form.addField(data_form.Field('list-single', field, options=[data_form.Option(_option) for _option in options_dict[field]])) feature_elt.addChild(x_form.toElement()) return feature_elt class XEP_0020_handler(XMPPHandler): implements(iwokkel.IDisco) def getDiscoInfo(self, requestor, target, nodeIdentifier=''): return [disco.DiscoFeature(NS_FEATURE_NEG)] def getDiscoItems(self, requestor, target, nodeIdentifier=''): return []