115 lines
3.9 KiB
Python
115 lines
3.9 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# SAT plugin for Result Set Management (XEP-0059)
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# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
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# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sat.core.i18n import _
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from sat.core.constants import Const as C
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from sat.core.log import getLogger
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log = getLogger(__name__)
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from wokkel import disco
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from wokkel import iwokkel
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from wokkel import rsm
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from twisted.words.protocols.jabber import xmlstream
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from zope.interface import implements
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PLUGIN_INFO = {
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C.PI_NAME: u"Result Set Management",
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C.PI_IMPORT_NAME: u"XEP-0059",
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C.PI_TYPE: u"XEP",
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C.PI_PROTOCOLS: [u"XEP-0059"],
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C.PI_MAIN: u"XEP_0059",
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C.PI_HANDLER: u"yes",
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C.PI_DESCRIPTION: _(u"""Implementation of Result Set Management"""),
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}
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RSM_PREFIX = u"rsm_"
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class XEP_0059(object):
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# XXX: RSM management is done directly in Wokkel.
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def __init__(self, host):
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log.info(_(u"Result Set Management plugin initialization"))
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def getHandler(self, client):
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return XEP_0059_handler()
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def parseExtra(self, extra):
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"""Parse extra dictionnary to retrieve RSM arguments
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@param extra(dict): data for parse
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@return (rsm.RSMRequest, None): request with parsed arguments
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or None if no RSM arguments have been found
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"""
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if int(extra.get(RSM_PREFIX + u'max', 0)) < 0:
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raise ValueError(_(u"rsm_max can't be negative"))
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rsm_args = {}
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for arg in (u"max", u"after", u"before", u"index"):
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try:
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argname = "max_" if arg == u"max" else arg
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rsm_args[argname] = extra.pop(RSM_PREFIX + arg)
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except KeyError:
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continue
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if rsm_args:
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return rsm.RSMRequest(**rsm_args)
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else:
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return None
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def serialise(self, rsm_response, data=None):
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"""Serialise data for RSM
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Key set in data can be:
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- rsm_first: first item id in the page
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- rsm_last: last item id in the page
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- rsm_index: position of the first item in the full set (may be approximate)
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- rsm_count: total number of items in the full set (may be approximage)
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If a value doesn't exists, it's not set.
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All values are set as strings.
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@param rsm_response(rsm.RSMResponse): response to serialise
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@param data(dict, None): dict to update with rsm_* data.
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If None, a new dict is created
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@return (dict): data dict
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"""
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if data is None:
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data = {}
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if rsm_response.first is not None:
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data[u"rsm_first"] = rsm_response.first
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if rsm_response.last is not None:
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data[u"rsm_last"] = rsm_response.last
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if rsm_response.index is not None:
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data[u"rsm_index"] = unicode(rsm_response.index)
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if rsm_response.index is not None:
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data[u"rsm_index"] = unicode(rsm_response.index)
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return data
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class XEP_0059_handler(xmlstream.XMPPHandler):
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implements(iwokkel.IDisco)
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def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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return [disco.DiscoFeature(rsm.NS_RSM)]
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def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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return []
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