/usr/share/pyshared/archipelcore/pubsub.py is in archipel-core 0.6.0-1.
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#
# pubsub.py
#
# Copyright (C) 2010 Antoine Mercadal <antoine.mercadal@inframonde.eu>
# This file is part of ArchipelProject
# http://archipelproject.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/>.
import types
import xmpp
XMPP_PUBSUB_VAR_TITLE = "pubsub#title"
XMPP_PUBSUB_VAR_DELIVER_NOTIFICATION = "pubsub#deliver_notifications"
XMPP_PUBSUB_VAR_DELIVER_PAYLOADS = "pubsub#deliver_payloads"
XMPP_PUBSUB_VAR_PERSIST_ITEMS = "pubsub#persist_items"
XMPP_PUBSUB_VAR_MAX_ITEMS = "pubsub#max_items"
XMPP_PUBSUB_VAR_ITEM_EXPIRE = "pubsub#item_expire"
XMPP_PUBSUB_VAR_ACCESS_MODEL = "pubsub#access_model"
XMPP_PUBSUB_VAR_ROSTER_GROUP_ALLOWED = "pubsub#roster_groups_allowed"
XMPP_PUBSUB_VAR_PUBLISH_MODEL = "pubsub#publish_model"
XMPP_PUBSUB_VAR_PURGE_OFFLINE = "pubsub#purge_offline"
XMPP_PUBSUB_VAR_SEND_LAST_PUBLISHED_ITEM = "pubsub#send_last_published_item"
XMPP_PUBSUB_VAR_PRESENCE_BASED_DELIVERY = "pubsub#presence_based_delivery"
XMPP_PUBSUB_VAR_NOTIFICATION_TYPE = "pubsub#notification_type"
XMPP_PUBSUB_VAR_NOTIFY_CONFIG = "pubsub#notify_config"
XMPP_PUBSUB_VAR_NOTIFY_DELETE = "pubsub#notify_delete"
XMPP_PUBSUB_VAR_NOTIFY_RECTRACT = "pubsub#notify_retract"
XMPP_PUBSUB_VAR_NOTIFY_SUB = "pubsub#notify_sub"
XMPP_PUBSUB_VAR_MAX_PAYLOAD_SIZE = "pubsub#max_payload_size"
XMPP_PUBSUB_VAR_TYPE = "pubsub#type"
XMPP_PUBSUB_VAR_BODY_XSLT = "pubsub#body_xslt"
XMPP_PUBSUB_VAR_ITEM_REPLY = "pubsub#itemreply"
XMPP_PUBSUB_VAR_ACCESS_MODEL_OPEN = "open"
XMPP_PUBSUB_VAR_ACCESS_MODEL_ROSTER = "roster"
XMPP_PUBSUB_VAR_ACCESS_MODEL_AUTHORIZE = "authorize"
XMPP_PUBSUB_VAR_ACCESS_MODEL_WHITELIST = "whitelist"
XMPP_PUBSUB_VAR_SEND_LAST_PUBLISHED_ITEM_NEVER = "never"
XMPP_PUBSUB_VAR_SEND_LAST_PUBLISHED_ITEM_ON_SUB = "on_sub"
XMPP_PUBSUB_VAR_SEND_LAST_PUBLISHED_ITEM_ON_SUB_PRESENCE = "on_sub_and_presence"
XMPP_PUBSUB_VAR_ITEM_REPLY_OWNER = "owner"
XMPP_PUBSUB_VAR_ITEM_REPLY_PUBLISHER = "publisher"
XMPP_PUBSUB_AFFILIATION_OWNER = "owner"
XMPP_PUBSUB_AFFILIATION_PUBLISHER = "publisher"
XMPP_PUBSUB_AFFILIATION_PUBLISHERONLY = "publisher-only"
XMPP_PUBSUB_AFFILIATION_MEMBER = "member"
XMPP_PUBSUB_AFFILIATION_NONE = "none"
XMPP_PUBSUB_AFFILIATION_OUTCAST = "outcast"
class TNPubSubNode:
def __init__(self, xmppclient, pubsubserver, nodename):
"""
Initialize the TNPubSubNode.
@type xmppclient: xmpp.Dispatcher
@param xmppclient: the xmppclient connection to user
@type pubsubserver: string
@param xmppclient: the string containing the JID of the pubsub server
@type nodename: string
@param nodename: the name of the pubsub node
"""
self.xmppclient = xmppclient
self.pubsubserver = pubsubserver
self.nodename = nodename
self.recovered = False
self.content = None
self.affiliations = {}
self.subscriptions = []
### Node management
def recover(self, wait=False):
"""
Get the current pubsub node and wait for response. If not already recovered, ask to server.
@type wait: Boolean
@param wait: if True, recovering will be blockant (IE, execution interrupted until recovering)
@rtype: Boolean
@return: True in case of success
"""
try:
self.retrieve_items(wait=wait)
return self.retrieve_items(wait=wait)
except Exception as ex:
return False
def retrieve_items(self, callback=None, wait=False):
"""
Retrieve or update the content of the node.
@type wait: Boolean
@param wait: if True, recovering will be blockant (IE, execution interrupted until recovering)
@rtype: Boolean
@return: True in case of success
"""
iq = xmpp.Iq(typ="get", to=self.pubsubserver)
iq_pubsub = iq.addChild(name='pubsub', namespace="http://jabber.org/protocol/pubsub")
iq_pubsub.addChild(name="items", attrs={"node": self.nodename})
def _did_retrieve_items(conn, resp, callback=None):
ret = False
if resp.getType() == "result":
self.content = resp.getTag("pubsub").getTag("items").getTags("item")
self.recovered = True
ret = True
if callback:
callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_retrieve_items(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_retrieve_items, args={"callback": callback})
return True
def create(self, callback=None, wait=False):
"""
Create node on server if not exists.
@type wait: Boolean
@param wait: if True, recovering will be blockant (IE, execution interrupted until recovering)
@rtype: Boolean
@return: True in case of success
"""
if self.recovered:
raise Exception("PUBSUB: can't create. Node %s already exists." % self.nodename)
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
iq.addChild(name="pubsub", namespace=xmpp.protocol.NS_PUBSUB).addChild(name="create", attrs={"node": self.nodename})
def _did_create(conn, resp, callback=None, wait=False):
ret = False
if resp.getType() == "result":
self.recover(wait=wait)
ret = True
if callback:
callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_create(None, resp, callback, wait)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_create, args={"callback": callback, "wait": wait})
return True
def delete(self, callback=None, wait=False):
"""
Delete the node from server if exists.
@type wait: Boolean
@param wait: if True, recovering will be blockant (IE, execution interrupted until recovering)
@rtype: Boolean
@return: True in case of success
"""
if not self.recovered:
raise Exception("PUBSUB: Can't delete. Node %s doesn't exists." % self.nodename)
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
iq.addChild(name="pubsub", namespace=xmpp.protocol.NS_PUBSUB + "#owner").addChild(name="delete", attrs={"node": self.nodename})
def _did_delete(conn, resp, callback):
ret = False
if resp.getType() == "result":
ret = True
if callback:
callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_delete(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_delete, args={"callback": callback})
return True
def configure(self, options, callback=None, wait=False):
"""
Configure the node.
@type options: dict
@param options: dictionary containing options: value for the pubsub configuration
@type wait: Boolean
@param wait: if True, recovering will be blockant (IE, execution interrupted until recovering)
@rtype: Boolean
@return: True in case of success
"""
if not self.recovered:
raise Exception("PUBSUB: can't configure. Node %s doesn't exists." % self.nodename)
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
pubsub = iq.addChild("pubsub", namespace=xmpp.protocol.NS_PUBSUB + "#owner")
configure = pubsub.addChild("configure", attrs={"node": self.nodename})
x = configure.addChild("x", namespace=xmpp.protocol.NS_DATA, attrs={"type": "submit"})
x.addChild("field", attrs={"var": "FORM_TYPE", "type": "hidden"}).addChild("value").setData("http://jabber.org/protocol/pubsub#node_config")
for key, value in options.items():
field = x.addChild("field", attrs={"var": key})
if type(value) == types.ListType:
for v in value:
field.addChild("value").setData(v)
else:
field.addChild("value").setData(str(value))
def _did_configure(conn, resp, callback):
ret = False
if resp.getType() == "result":
ret = True
if callback:
callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_configure(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_configure, args={"callback": callback})
return True
### Item management
def get_items(self):
"""
Return an array of all items.
@rtype: list
@return: list of pubsub's xmpp.Nonde
"""
return self.content
def get_item(self, item_id):
"""
Return the item with the given item id
@type item_id: string
@param item_id: the pubsub node id
"""
for n in self.content:
if n.getAttr("id").lower() == item_id.lower():
return n
return None
def add_item(self, itemcontentnode, callback=None, wait=False):
"""
Add a leaf item xmpp.node to the node and will trigger callback if any
on server answer.
@type itemcontentnode: xmpp.Node
@param itemcontentnode: the node to publish on the pubsub
@type callback: function
@param callback: if not None, callback will be called after publication
"""
if not self.recovered:
raise Exception("PUBSUB: can't add item. Node %s doesn't exists." % self.nodename)
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
pubsub = iq.addChild("pubsub", namespace=xmpp.protocol.NS_PUBSUB)
publish = pubsub.addChild("publish", attrs={"node": self.nodename})
item = publish.addChild("item")
item.addChild(node=itemcontentnode)
def _did_publish_item(conn, resp, callback, item):
ret = False
if resp.getType() == "result":
item.setAttr("id", resp.getTag("pubsub").getTag("publish").getTag("item").getAttr("id"))
self.content.append(item)
ret = True
if callback:
return callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_publish_item(None, resp, callback, item)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_publish_item, args={"callback": callback, "item": item})
return True
def remove_item(self, item_id, callback=None, user_info=None, wait=False):
"""
Remove an item according to its ID.
@type item_id: string
@param item_id: the id of the node to remove
@type callback: function
@param callback: if not None, callback will be called after retraction
@type user_info: Object
@param user_info: random info to pass to the callback
"""
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
pubsub = iq.addChild("pubsub", namespace=xmpp.protocol.NS_PUBSUB)
retract = pubsub.addChild("retract", attrs={"node": self.nodename})
item = retract.addChild("item", attrs={"id": item_id})
for item in self.content:
if item.getAttr("id") == item_id:
self.content.remove(item)
break
def _did_remove_item(conn, resp, callback, user_info):
ret = False
if resp.getType() == "result":
ret = True
if callback:
return callback(resp, user_info)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_remove_item(None, resp, callback, user_info)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_remove_item, args={"callback": callback, "user_info": user_info})
## Subscription management
def retrieve_subscriptions(self, callback=None, wait=False):
"""
Recover the subscriptions
@type callback: function
@param callback: if not None, callback will be called after retrieval
@type wait: Boolean
@param wait: if True, action will be done in sync mode
"""
iq = xmpp.Iq(typ="get", to=self.pubsubserver)
pubsub = iq.addChild("pubsub", namespace=xmpp.protocol.NS_PUBSUB)
pubsub.addChild("subscriptions", attrs={"node": self.nodename})
def _did_retrieve_subscription(conn, resp, callback):
ret = False
if resp.getType() == "result":
self.subscriptions = []
for subscription in resp.getTag("pubsub").getTag("subscriptions").getTags("subscription"):
self.subscriptions.append(subscription.getAttr("subid"))
ret = True
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_retrieve_subscription(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_retrieve_subscription, args={"callback": callback})
return True
def subscribe(self, jid, callback=None, unique=True, wait=False):
"""
Subscribe to the node.
@type jid: xmpp.Protocol.JID
@param jid: the JID of the subscriber
@type callback: function
@param callback: the callback that will be called when an item is published
@type unique: Boolean
@param unique: if True, it will subscribe only if no subscription is already done
@type wait: Boolean
@param wait: if True, action will be done in sync mode
"""
self.subscriber_callback = callback
self.subscriber_jid = jid
if unique:
if len(self.subscriptions) == 0:
self.retrieve_subscriptions(wait=True)
if not len(self.subscriptions) == 0:
self.xmppclient.RegisterHandler('message', self._on_pubsub_event, ns=xmpp.protocol.NS_PUBSUB+"#event", typ="headline")
return;
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
pubsub = iq.addChild("pubsub", namespace=xmpp.protocol.NS_PUBSUB)
pubsub.addChild("subscribe", attrs={"node": self.nodename, "jid": jid.getStripped()})
def _did_subscribe(conn, resp, callback):
ret = False
if resp.getType() == "result":
self.xmppclient.RegisterHandler('message', self._on_pubsub_event, ns=xmpp.protocol.NS_PUBSUB+"#event", typ="headline")
ret = True
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_subscribe(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_subscribe, args={"callback": callback})
return True
self.xmppclient.send(iq)
def _on_pubsub_event(self, conn, event):
"""
Trigger the callback for events.
"""
def on_retrieve(resp):
if resp.getType() == "result":
node = event.getTag("event").getTag("items").getAttr("node")
if node == self.nodename and self.subscriber_callback and event.getTo().getStripped() == self.subscriber_jid.getStripped():
self.subscriber_callback(event)
self.retrieve_items(callback=on_retrieve)
def unsubscribe(self, jid, subID, callback=None, wait=False):
"""
Unsubscribe from a node.
@type jid: xmpp.JID
@param jid: the JID of the entity to unsubscribe
@type subID: String
@param subID: the subscription ID to remove. If None, all subscriptions will be removed
@param callback: the callback that will be called when an item is published
@type wait: Boolean
@param wait: if True, action will be done in sync mode
"""
self.subscriber_callback = None
self.subscriber_jid = None
def _did_unsubscribe(conn, resp, callback):
self.xmppclient.UnregisterHandler('message', self._on_pubsub_event, ns=xmpp.protocol.NS_PUBSUB+"#event", typ="headline")
iq = xmpp.Iq(typ="set", to=self.pubsubserver)
pubsub = iq.addChild("pubsub", namespace=xmpp.protocol.NS_PUBSUB)
pubsub.addChild("unsubscribe", attrs={"node": self.nodename, "jid": jid.getStripped(), "subid": subID})
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_unsubscribe(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_unsubscribe, args={"callback": callback})
return True
## Affilication management
def fetch_affiliations(self, callback=None, wait=False):
"""
fetch the affiliations for the node
@type callback: Function
@param callback: the callback function
@type wait: Boolean
@param wait: if true, wait for answer
"""
iq = xmpp.Node("iq", attrs={"type": "get", "to": self.pubsubserver})
pubsubNode = iq.addChild("pubsub", namespace="http://jabber.org/protocol/pubsub#owner")
affNode = pubsubNode.addChild("affiliations", attrs={"node": self.nodename})
def _did_fetch_affiliations(conn, resp, callback):
ret = False
if resp.getType() == "result":
self.affiliations = {}
for affiliation in resp.getTag("pubsub").getTag("affiliations").getTags("affiliation"):
self.affiliations[affiliation.getAttr("jid")] = affiliation.getAttr("affiliation")
ret = True
if callback:
return callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_fetch_affiliations(None, resp, callback)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_fetch_affiliations, args={"callback": callback})
return True
def set_affiliation(self, jid, affiliation, callback=None, wait=False):
"""
set an affiliation for the node
@type jid: xmpp.JID
@param jid: the jid to change affiliation
@type affiliation: String
@param affiliation: the affiliation
@type callback: Function
@param callback: the callback function
@type wait: Boolean
@param wait: if true, wait for answer
"""
iq = xmpp.Node("iq", attrs={"type": "set", "to": self.pubsubserver})
pubsubNode = iq.addChild("pubsub", namespace="http://jabber.org/protocol/pubsub#owner")
affNode = pubsubNode.addChild("affiliations", attrs={"node": self.nodename})
affNode.addChild("affiliation", attrs={"jid": jid.getStripped(), "affiliation": affiliation})
def _did_set_affiliations(conn, resp, callback, wait):
ret = False
if resp.getType() == "result":
self.fetch_affiliations(wait=wait)
ret = True
if callback:
return callback(resp)
return ret
if wait:
resp = self.xmppclient.SendAndWaitForResponse(iq)
return _did_set_affiliations(None, resp, callback, wait)
else:
self.xmppclient.SendAndCallForResponse(iq, func=_did_set_affiliations, args={"callback": callback, "wait": wait})
return True
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