7f86a9adf7
- comments are no more automaticly requested and sent as events
- a new bridge method "getGroupBlogComments" allow to request them
527 lines
24 KiB
Python
Executable file
527 lines
24 KiB
Python
Executable file
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# SAT plugin for microbloging with roster access
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# Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.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 logging import debug, info, warning, error
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from twisted.internet import defer
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from twisted.words.protocols.jabber import jid
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from wokkel import disco, data_form, iwokkel
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from zope.interface import implements
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import uuid
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import urllib
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try:
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from twisted.words.protocols.xmlstream import XMPPHandler
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except ImportError:
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from wokkel.subprotocols import XMPPHandler
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NS_PUBSUB = 'http://jabber.org/protocol/pubsub'
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NS_GROUPBLOG = 'http://goffi.org/protocol/groupblog'
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NS_NODE_PREFIX = 'urn:xmpp:groupblog:'
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NS_COMMENT_PREFIX = 'urn:xmpp:comments:'
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#NS_PUBSUB_EXP = 'http://goffi.org/protocol/pubsub' #for non official features
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NS_PUBSUB_EXP = NS_PUBSUB # XXX: we can't use custom namespace as Wokkel's PubSubService use official NS
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NS_PUBSUB_ITEM_ACCESS = NS_PUBSUB_EXP + "#item-access"
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NS_PUBSUB_CREATOR_JID_CHECK = NS_PUBSUB_EXP + "#creator-jid-check"
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NS_PUBSUB_ITEM_CONFIG = NS_PUBSUB_EXP + "#item-config"
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NS_PUBSUB_AUTO_CREATE = NS_PUBSUB + "#auto-create"
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TYPE_COLLECTION = 'collection'
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ACCESS_TYPE_MAP = { 'PUBLIC': 'open',
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'GROUP': 'roster',
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'JID': None, #JID is not yet managed
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}
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PLUGIN_INFO = {
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"name": "Group blogging throught collections",
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"import_name": "groupblog",
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"type": "MISC",
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"protocols": [],
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"dependencies": ["XEP-0277"],
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"main": "GroupBlog",
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"handler": "yes",
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"description": _("""Implementation of microblogging with roster access""")
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}
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class NoCompatiblePubSubServerFound(Exception):
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pass
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class BadAccessTypeError(Exception):
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pass
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class BadAccessListError(Exception):
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pass
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class UnknownType(Exception):
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pass
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class GroupBlog(object):
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"""This class use a SàT PubSub Service to manage access on microblog"""
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def __init__(self, host):
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info(_("Group blog plugin initialization"))
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self.host = host
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host.bridge.addMethod("sendGroupBlog", ".plugin", in_sign='sassa{ss}s', out_sign='',
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method=self.sendGroupBlog)
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host.bridge.addMethod("sendGroupBlogComment", ".plugin", in_sign='sss', out_sign='',
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method=self.sendGroupBlogComment,
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async=True)
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host.bridge.addMethod("getLastGroupBlogs", ".plugin",
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in_sign='sis', out_sign='aa{ss}',
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method=self.getLastGroupBlogs,
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async=True)
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host.bridge.addMethod("getMassiveLastGroupBlogs", ".plugin",
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in_sign='sasis', out_sign='a{saa{ss}}',
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method=self.getMassiveLastGroupBlogs,
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async=True)
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host.bridge.addMethod("getGroupBlogComments", ".plugin",
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in_sign='sss', out_sign='aa{ss}',
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method=self.getGroupBlogComments,
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async=True)
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host.bridge.addMethod("subscribeGroupBlog", ".plugin", in_sign='ss', out_sign='',
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method=self.subscribeGroupBlog,
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async=True)
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host.bridge.addMethod("massiveSubscribeGroupBlogs", ".plugin", in_sign='sass', out_sign='',
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method=self.massiveSubscribeGroupBlogs,
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async=True)
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host.trigger.add("PubSubItemsReceived", self.pubSubItemsReceivedTrigger)
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def getHandler(self, profile):
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return GroupBlog_handler()
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@defer.inlineCallbacks
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def initialise(self, profile_key):
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"""Check that this data for this profile are initialised, and do it else
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@param client: client of the profile
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@profile_key: %(doc_profile)s"""
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profile = self.host.memory.getProfileName(profile_key)
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if not profile:
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error(_("Unknown profile"))
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raise Exception("Unknown profile")
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client = self.host.getClient(profile)
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if not client:
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error(_('No client for this profile key: %s') % profile_key)
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raise Exception("Unknown profile")
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yield client.client_initialized # we want to be sure that the client is initialized
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#we first check that we have a item-access pubsub server
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if not hasattr(client, "item_access_pubsub"):
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debug(_('Looking for item-access power pubsub server'))
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#we don't have any pubsub server featuring item access yet
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client.item_access_pubsub = None
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client._item_access_pubsub_pending = defer.Deferred()
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for entity in self.host.memory.getServerServiceEntities("pubsub", "service", profile):
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_disco = yield client.disco.requestInfo(entity)
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#if set([NS_PUBSUB_ITEM_ACCESS, NS_PUBSUB_AUTO_CREATE, NS_PUBSUB_CREATOR_JID_CHECK]).issubset(_disco.features):
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if set([NS_PUBSUB_AUTO_CREATE, NS_PUBSUB_CREATOR_JID_CHECK]).issubset(_disco.features):
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info(_("item-access powered pubsub service found: [%s]") % entity.full())
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client.item_access_pubsub = entity
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client._item_access_pubsub_pending.callback(None)
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if hasattr(client, "_item_access_pubsub_pending"):
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#XXX: we need to wait for item access pubsub service check
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yield client._item_access_pubsub_pending
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del client._item_access_pubsub_pending
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if not client.item_access_pubsub:
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error(_("No item-access powered pubsub server found, can't use group blog"))
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raise NoCompatiblePubSubServerFound
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defer.returnValue((profile, client))
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def pubSubItemsReceivedTrigger(self, event, profile):
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""""Trigger which catch groupblogs events"""
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if event.nodeIdentifier.startswith(NS_NODE_PREFIX):
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# Microblog
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publisher = jid.JID(event.nodeIdentifier[len(NS_NODE_PREFIX):])
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origin_host = publisher.host.split('.')
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event_host = event.sender.host.split('.')
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#FIXME: basic origin check, must be improved
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#TODO: automatic security test
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if (not (origin_host)
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or len(event_host) < len(origin_host)
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or event_host[-len(origin_host):] != origin_host):
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warning("Host incoherence between %s and %s (hack attempt ?)" % (unicode(event.sender),
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unicode(publisher)))
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return
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client = self.host.getClient(profile)
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for gbdata in self._itemsConstruction(event.items, publisher, client):
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self.host.bridge.personalEvent(publisher.full(), "MICROBLOG", gbdata, profile)
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return False
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elif event.nodeIdentifier.startswith(NS_COMMENT_PREFIX):
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# Comment
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for microblog_data in self._handleCommentsItems(event.items, event.sender, event.nodeIdentifier):
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publisher = None # FIXME: see below (_handleCommentsItems)
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self.host.bridge.personalEvent(publisher.full() if publisher else microblog_data["author"], "MICROBLOG", microblog_data, profile)
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return False
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return True
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def _handleCommentsItems(self, items, service, node_identifier):
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""" Convert comments items to groupblog data, and send them as signals
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@param items: comments items
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@param service: jid of the PubSub service used
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@param node_identifier: comments node
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@return: list of group blog data
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"""
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ret = []
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for item in items:
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publisher = "" # FIXME: publisher attribute for item in SàT pubsub is not managed yet, so
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# publisher is not checked and can be easily spoofed. This need to be fixed
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# quickly.
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microblog_data = self.item2gbdata(item, "comment")
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microblog_data["service"] = service.userhost()
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microblog_data["node"] = node_identifier
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microblog_data["verified_publisher"] = "true" if publisher else "false"
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ret.append(microblog_data)
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return ret
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def _parseAccessData(self, microblog_data, item):
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P = self.host.plugins["XEP-0060"]
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form_elts = filter(lambda elt: elt.name == "x", item.children)
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for form_elt in form_elts:
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form = data_form.Form.fromElement(form_elt)
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if (form.formNamespace == NS_PUBSUB_ITEM_CONFIG):
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access_model = form.get(P.OPT_ACCESS_MODEL, 'open')
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if access_model == "roster":
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try:
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microblog_data["groups"] = '\n'.join(form.fields[P.OPT_ROSTER_GROUPS_ALLOWED].values)
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except KeyError:
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warning("No group found for roster access-model")
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microblog_data["groups"] = ''
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break
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def item2gbdata(self, item, _type="main_item"):
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""" Convert item to microblog data dictionary + add access data """
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microblog_data = self.host.plugins["XEP-0277"].item2mbdata(item)
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microblog_data["type"] = _type
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self._parseAccessData(microblog_data, item)
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return microblog_data
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def getNodeName(self, publisher):
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"""Retrieve the name of publisher's node
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@param publisher: publisher's jid
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@return: node's name (string)"""
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return NS_NODE_PREFIX + publisher.userhost()
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def _publishMblog(self, service, client, access_type, access_list, message, options):
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"""Actually publish the message on the group blog
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@param service: jid of the item-access pubsub service
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@param client: SatXMPPClient of the published
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@param access_type: one of "PUBLIC", "GROUP", "JID"
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@param access_list: set of entities (empty list for all, groups or jids) allowed to see the item
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@param message: message to publish
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@param options: dict which option name as key, which can be:
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- allow_comments: True to accept comments, False else (default: False)
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"""
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node_name = self.getNodeName(client.jid)
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mblog_data = {'content': message}
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P = self.host.plugins["XEP-0060"]
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access_model_value = ACCESS_TYPE_MAP[access_type]
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if options.get('allow_comments', 'False').lower() == 'true':
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comments_node = "%s_%s__%s" % (NS_COMMENT_PREFIX, str(uuid.uuid4()), node_name)
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mblog_data['comments'] = "xmpp:%(service)s?%(query)s" % {'service': service.userhost(),
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'query': urllib.urlencode([('node',comments_node.encode('utf-8'))])}
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_options = {P.OPT_ACCESS_MODEL: access_model_value,
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P.OPT_PERSIST_ITEMS: 1,
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P.OPT_MAX_ITEMS: -1,
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P.OPT_DELIVER_PAYLOADS: 1,
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P.OPT_SEND_ITEM_SUBSCRIBE: 1,
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P.OPT_PUBLISH_MODEL: "subscribers", #TODO: should be open if *both* node and item access_model are open (public node and item)
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}
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if access_model_value == 'roster':
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_options[P.OPT_ROSTER_GROUPS_ALLOWED] = list(access_list)
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# FIXME: check comments node creation success, at the moment this is a potential security risk (if the node
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# already exists, the creation will silently fail, but the comments link will stay the same, linking to a
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# node owned by somebody else)
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defer_blog = self.host.plugins["XEP-0060"].createNode(service, comments_node, _options, profile_key=client.profile)
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mblog_item = self.host.plugins["XEP-0277"].data2entry(mblog_data, client.profile)
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form = data_form.Form('submit', formNamespace=NS_PUBSUB_ITEM_CONFIG)
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if access_type == "PUBLIC":
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if access_list:
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raise BadAccessListError("access_list must be empty for PUBLIC access")
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access = data_form.Field(None, P.OPT_ACCESS_MODEL, value=access_model_value)
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form.addField(access)
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elif access_type == "GROUP":
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access = data_form.Field(None, P.OPT_ACCESS_MODEL, value=access_model_value)
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allowed = data_form.Field(None, P.OPT_ROSTER_GROUPS_ALLOWED, values=access_list)
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form.addField(access)
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form.addField(allowed)
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mblog_item.addChild(form.toElement())
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elif access_type == "JID":
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raise NotImplementedError
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else:
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error(_("Unknown access_type"))
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raise BadAccessTypeError
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defer_blog = self.host.plugins["XEP-0060"].publish(service, node_name, items=[mblog_item], profile_key=client.profile)
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defer_blog.addErrback(self._mblogPublicationFailed)
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def _mblogPublicationFailed(self, failure):
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#TODO
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return failure
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def sendGroupBlog(self, access_type, access_list, message, options, profile_key='@NONE@'):
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"""Publish a microblog with given item access
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@param access_type: one of "PUBLIC", "GROUP", "JID"
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@param access_list: list of authorized entity (empty list for PUBLIC ACCESS,
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list of groups or list of jids) for this item
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@param message: microblog
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@param options: dict which option name as key, which can be:
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- allow_comments: True to accept comments, False else (default: False)
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@profile_key: %(doc_profile)s
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"""
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def initialised(result):
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profile, client = result
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if access_type == "PUBLIC":
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if access_list:
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raise Exception("Publishers list must be empty when getting microblogs for all contacts")
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self._publishMblog(client.item_access_pubsub, client, "PUBLIC", [], message, options)
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elif access_type == "GROUP":
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_groups = set(access_list).intersection(client.roster.getGroups()) # We only keep group which actually exist
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if not _groups:
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raise BadAccessListError("No valid group")
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self._publishMblog(client.item_access_pubsub, client, "GROUP", _groups, message, options)
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elif access_type == "JID":
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raise NotImplementedError
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else:
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error(_("Unknown access type"))
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raise BadAccessTypeError
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self.initialise(profile_key).addCallback(initialised)
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def sendGroupBlogComment(self, node_url, message, profile_key='@NONE@'):
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"""Publish a comment in the given node
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@param node url: link to the comments node as specified in XEP-0277 and given in microblog data's comments key
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@param message: comment
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@profile_key: %(doc_profile)s
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"""
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profile = self.host.memory.getProfileName(profile_key)
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if not profile:
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error(_("Unknown profile"))
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raise Exception("Unknown profile")
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service, node = self.host.plugins["XEP-0277"].parseCommentUrl(node_url)
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mblog_data = {'content': message}
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mblog_item = self.host.plugins["XEP-0277"].data2entry(mblog_data, profile)
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return self.host.plugins["XEP-0060"].publish(service, node, items=[mblog_item], profile_key=profile)
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def _itemsConstruction(self, items, pub_jid, client):
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""" Transforms items to group blog data and manage comments node
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@param items: iterable of items
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@param pub_jid: jid of the publisher or None to use items data
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@param client: SatXMPPClient instance
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@return: list of group blog data """
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# TODO: use items data when pub_jid is None
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ret = []
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for item in items:
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gbdata = self.item2gbdata(item)
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ret.append(gbdata)
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# if there is a comments node, we subscribe to it
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if "comments_node" in gbdata:
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try:
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# every comments node must be subscribed, except if we are the publisher (we are already subscribed in this case)
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if pub_jid.userhostJID() != client.jid.userhostJID():
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self.host.plugins["XEP-0060"].subscribe(jid.JID(gbdata["comments_service"]), gbdata["comments_node"],
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profile_key=client.profile)
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except KeyError:
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warning("Missing key for comments")
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return ret
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def getLastGroupBlogs(self, pub_jid_s, max_items=10, profile_key='@NONE@'):
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"""Get the last published microblogs
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@param pub_jid_s: jid of the publisher
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@param max_items: how many microblogs we want to get (see XEP-0060 #6.5.7)
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@param profile_key: profile key
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@return: list of microblog data (dict)
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"""
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pub_jid = jid.JID(pub_jid_s)
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def initialised(result):
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profile, client = result
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d = self.host.plugins["XEP-0060"].getItems(client.item_access_pubsub, self.getNodeName(pub_jid),
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max_items=max_items, profile_key=profile_key)
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d.addCallback(self._itemsConstruction, pub_jid, client)
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d.addErrback(lambda ignore: {}) # TODO: more complete error management (log !)
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return d
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#TODO: we need to use the server corresponding the the host of the jid
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return self.initialise(profile_key).addCallback(initialised)
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def getGroupBlogComments(self, service_s, node, profile_key='@NONE@'):
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"""Get all comments of given node
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@param service_s: service hosting the node
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@param node: comments node
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@param profile_key: profile key
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@return: list of microblog data (dict)
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"""
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service = jid.JID(service_s)
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def initialised(result):
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profile, client = result
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d = self.host.plugins["XEP-0060"].getItems(service, node,
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profile_key=profile_key)
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d.addCallback(self._handleCommentsItems, service, node)
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d.addErrback(lambda ignore: {}) # TODO: more complete error management (log !)
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return d
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#TODO: we need to use the server corresponding the the host of the jid
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return self.initialise(profile_key).addCallback(initialised)
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def getMassiveLastGroupBlogs(self, publishers_type, publishers, max_items=10, profile_key='@NONE@'):
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"""Get the last published microblogs for a list of groups or jids
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@param publishers_type: type of the list of publishers (one of "GROUP" or "JID" or "ALL")
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@param publishers: list of publishers, according to "publishers_type" (list of groups or list of jids)
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@param max_items: how many microblogs we want to get
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@param profile_key: profile key
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"""
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def sendResult(result):
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"""send result of DeferredList (list of microblogs to the calling method"""
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ret = {}
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for (success, value) in result:
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if success:
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source_jid, data = value
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ret[source_jid] = data
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return ret
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def initialised(result):
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profile, client = result
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if publishers_type == "ALL":
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contacts = client.roster.getItems()
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jids = [contact.jid.userhost() for contact in contacts]
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elif publishers_type == "GROUP":
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jids = []
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for _group in publishers:
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jids.extend(client.roster.getJidsFromGroup(_group))
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elif publishers_type == 'JID':
|
|
jids = publishers
|
|
else:
|
|
raise UnknownType
|
|
|
|
mblogs = []
|
|
|
|
for jid_s in jids:
|
|
_jid = jid.JID(jid_s)
|
|
d = self.host.plugins["XEP-0060"].getItems(client.item_access_pubsub, self.getNodeName(_jid),
|
|
max_items=max_items, profile_key=profile_key)
|
|
d.addCallback(lambda items, source_jid: (source_jid, self._itemsConstruction(items, _jid, client)), jid_s)
|
|
|
|
mblogs.append(d)
|
|
dlist = defer.DeferredList(mblogs)
|
|
dlist.addCallback(sendResult)
|
|
|
|
return dlist
|
|
|
|
#TODO: custom exception
|
|
if publishers_type not in ["GROUP", "JID", "ALL"]:
|
|
raise Exception("Bad call, unknown publishers_type")
|
|
if publishers_type == "ALL" and publishers:
|
|
raise Exception("Publishers list must be empty when getting microblogs for all contacts")
|
|
return self.initialise(profile_key).addCallback(initialised)
|
|
#TODO: we need to use the server corresponding the the host of the jid
|
|
|
|
def subscribeGroupBlog(self, pub_jid, profile_key='@NONE@'):
|
|
def initialised(result):
|
|
profile, client = result
|
|
d = self.host.plugins["XEP-0060"].subscribe(client.item_access_pubsub, self.getNodeName(jid.JID(pub_jid)),
|
|
profile_key=profile_key)
|
|
return d
|
|
|
|
#TODO: we need to use the server corresponding the the host of the jid
|
|
return self.initialise(profile_key).addCallback(initialised)
|
|
|
|
def massiveSubscribeGroupBlogs(self, publishers_type, publishers, profile_key='@NONE@'):
|
|
"""Subscribe microblogs for a list of groups or jids
|
|
@param publishers_type: type of the list of publishers (one of "GROUP" or "JID" or "ALL")
|
|
@param publishers: list of publishers, according to "publishers_type" (list of groups or list of jids)
|
|
@param profile_key: profile key
|
|
"""
|
|
|
|
def initialised(result):
|
|
profile, client = result
|
|
|
|
if publishers_type == "ALL":
|
|
contacts = client.roster.getItems()
|
|
jids = [contact.jid.userhost() for contact in contacts]
|
|
elif publishers_type == "GROUP":
|
|
jids = []
|
|
for _group in publishers:
|
|
jids.extend(client.roster.getJidsFromGroup(_group))
|
|
elif publishers_type == 'JID':
|
|
jids = publishers
|
|
else:
|
|
raise UnknownType
|
|
|
|
mblogs = []
|
|
for _jid in jids:
|
|
d = self.host.plugins["XEP-0060"].subscribe(client.item_access_pubsub, self.getNodeName(jid.JID(_jid)),
|
|
profile_key=profile_key)
|
|
mblogs.append(d)
|
|
dlist = defer.DeferredList(mblogs)
|
|
return dlist
|
|
|
|
#TODO: custom exception
|
|
if publishers_type not in ["GROUP", "JID", "ALL"]:
|
|
raise Exception("Bad call, unknown publishers_type")
|
|
if publishers_type == "ALL" and publishers:
|
|
raise Exception("Publishers list must be empty when getting microblogs for all contacts")
|
|
return self.initialise(profile_key).addCallback(initialised)
|
|
#TODO: we need to use the server corresponding the the host of the jid
|
|
|
|
|
|
class GroupBlog_handler(XMPPHandler):
|
|
implements(iwokkel.IDisco)
|
|
|
|
def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
|
|
return [disco.DiscoFeature(NS_GROUPBLOG)]
|
|
|
|
def getDiscoItems(self, requestor, target, nodeIdentifier=''):
|
|
return []
|