Mercurial > libervia-backend
view src/plugins/plugin_xep_0231.py @ 2156:8f96c242fa89
jp (outputs): added OUTPUT_COMPLEX type for data which are more complex than key/value dictionaries
author | Goffi <goffi@goffi.org> |
---|---|
date | Thu, 16 Feb 2017 00:51:33 +0100 |
parents | 33c8c4973743 |
children | 8b37a62336c3 |
line wrap: on
line source
#!/usr/bin/env python2 # -*- coding: utf-8 -*- # SAT plugin for Jingle File Transfer (XEP-0231) # Copyright (C) 2009-2016 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.constants import Const as C from sat.core.log import getLogger log = getLogger(__name__) from sat.tools import xml_tools from wokkel import disco, iwokkel from zope.interface import implements from twisted.words.protocols.jabber.xmlstream import XMPPHandler import base64 PLUGIN_INFO = { C.PI_NAME: "Bits of Binary", C.PI_IMPORT_NAME: "XEP-0231", C.PI_TYPE: "XEP", C.PI_PROTOCOLS: ["XEP-0231"], C.PI_DEPENDENCIES: ["XEP-0071"], C.PI_MAIN: "XEP_0231", C.PI_HANDLER: "yes", C.PI_DESCRIPTION: _("""Implementation of bits of binary (used for small images/files)""") } NS_BOB = u'urn:xmpp:bob' class XEP_0231(object): def __init__(self, host): log.info(_(u"plugin Bits of Binary initialization")) self.host = host host.trigger.add("xhtml_post_treat", self.XHTMLTrigger) def dumpData(self, client, data_elt, cid): """save file encoded in data_elt to cache @param data_elt(domish.Element): <data> as in XEP-0231 @param cid(unicode): content-id @return(unicode): full path to dumped file """ # FIXME: is it needed to use a separate thread? # probably not with the little data expected with BoB mime_type = data_elt.getAttribute('type','') try: max_age = int(data_elt['max-age']) except (KeyError, ValueError): log.warning(u'invalid max-age found') max_age = None with client.cache.cacheData( PLUGIN_INFO['import_name'], cid, mime_type, max_age) as f: file_path = f.name f.write(base64.b64decode(str(data_elt))) return file_path def getHandler(self, client): return XEP_0231_handler() def _dataCb(self, iq_elt, client, img_elt, cid): for data_elt in iq_elt.elements(NS_BOB, u'data'): if data_elt.getAttribute('cid') == cid: file_path = self.dumpData(client, data_elt, cid) img_elt[u'src'] = u'file://{}'.format(file_path) break else: log.warning(u"invalid data stanza received, requested cid was not found:\n{iq_elt}\nrequested cid: {cid}".format( iq_elt = iq_elt, cid = cid )) def _dataEb(self, iq_elt): log.warning(u"Can't get requested data:\n{iq_elt}".format(iq_elt=iq_elt)) def XHTMLTrigger(self, client, message_elt, body_elt, lang, treat_d): for img_elt in xml_tools.findAll(body_elt, C.NS_XHTML, u'img'): source = img_elt.getAttribute(u'src','') if source.startswith(u'cid:'): cid = source[4:] file_path = client.cache.getFilePath(cid) if file_path is not None: # image is in cache, we change change the url img_elt[u'src'] = u'file://{}'.format(file_path) continue else: # image is not in cache, is it given locally? for data_elt in message_elt.elements(NS_BOB, u'data'): if data_elt.getAttribute('cid') == cid: file_path = self.dumpData(data_elt, cid) img_elt[u'src'] = u'file://{}'.format(file_path) break else: # cid not found locally, we need to request it # so we use the deferred iq_elt = client.IQ('get') iq_elt['to'] = message_elt['from'] data_elt = iq_elt.addElement((NS_BOB, 'data')) data_elt['cid'] = cid d = iq_elt.send() d.addCallback(self._dataCb, client, img_elt, cid) d.addErrback(self._dataEb) treat_d.addCallback(lambda dummy: d) class XEP_0231_handler(XMPPHandler): implements(iwokkel.IDisco) def getDiscoInfo(self, requestor, target, nodeIdentifier=''): return [disco.DiscoFeature(NS_BOB)] def getDiscoItems(self, requestor, target, nodeIdentifier=''): return []