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+"""
+ SleekXMPP: The Sleek XMPP Library
+ Copyright (C) 2010 Nathanael C. Fritz
+ This file is part of SleekXMPP.
+
+ See the file LICENSE for copying permission.
+"""
+
+from sleekxmpp.xmlstream import JID
+from sleekxmpp.roster import RosterItem
+
+
+class RosterNode(object):
+
+ """
+ A roster node is a roster for a single JID.
+
+ Attributes:
+ xmpp -- The main SleekXMPP instance.
+ jid -- The JID that owns the roster node.
+ db -- Optional interface to an external datastore.
+ auto_authorize -- Determines how authorizations are handled:
+ True -- Accept all subscriptions.
+ False -- Reject all subscriptions.
+ None -- Subscriptions must be
+ manually authorized.
+ Defaults to True.
+ auto_subscribe -- Determines if bi-directional subscriptions
+ are created after automatically authrorizing
+ a subscription request.
+ Defaults to True
+
+ Methods:
+ add -- Add a JID to the roster.
+ update -- Update a JID's subscription information.
+ subscribe -- Subscribe to a JID.
+ unsubscribe -- Unsubscribe from a JID.
+ remove -- Remove a JID from the roster.
+ presence -- Return presence information for a JID's resources.
+ """
+
+ def __init__(self, xmpp, jid, db=None):
+ """
+ Create a roster node for a JID.
+
+ Arguments:
+ xmpp -- The main SleekXMPP instance.
+ jid -- The JID that owns the roster.
+ db -- Optional interface to an external datastore.
+ """
+ self.xmpp = xmpp
+ self.jid = jid
+ self.db = db
+ self.auto_authorize = True
+ self.auto_subscribe = True
+ self._jids = {}
+
+ if self.db:
+ for jid in self.db.entries(self.jid):
+ self.add(jid)
+
+ def __getitem__(self, key):
+ """
+ Return the roster item for a subscribed JID.
+
+ A new item entry will be created if one does not already exist.
+ """
+ if isinstance(key, JID):
+ key = key.bare
+ if key not in self._jids:
+ self.add(key, save=True)
+ return self._jids[key]
+
+ def keys(self):
+ """Return a list of all subscribed JIDs."""
+ return self._jids.keys()
+
+ def has_jid(self, jid):
+ """Returns whether the roster has a JID."""
+ return jid in self._jids
+
+ def __iter__(self):
+ """Iterate over the roster items."""
+ return self._jids.__iter__()
+
+ def set_backend(self, db=None):
+ """
+ Set the datastore interface object for the roster node.
+
+ Arguments:
+ db -- The new datastore interface.
+ """
+ self.db = db
+ for jid in self.db.entries(self.jid):
+ self.add(jid)
+ for jid in self._jids:
+ self._jids[jid].set_backend(db)
+
+ def add(self, jid, name='', groups=None, afrom=False, ato=False,
+ pending_in=False, pending_out=False, whitelisted=False,
+ save=False):
+ """
+ Add a new roster item entry.
+
+ Arguments:
+ jid -- The JID for the roster item.
+ name -- An alias for the JID.
+ groups -- A list of group names.
+ afrom -- Indicates if the JID has a subscription state
+ of 'from'. Defaults to False.
+ ato -- Indicates if the JID has a subscription state
+ of 'to'. Defaults to False.
+ pending_in -- Indicates if the JID has sent a subscription
+ request to this connection's JID.
+ Defaults to False.
+ pending_out -- Indicates if a subscription request has been sent
+ to this JID.
+ Defaults to False.
+ whitelisted -- Indicates if a subscription request from this JID
+ should be automatically authorized.
+ Defaults to False.
+ save -- Indicates if the item should be persisted
+ immediately to an external datastore,
+ if one is used.
+ Defaults to False.
+ """
+ if isinstance(jid, JID):
+ key = jid.bare
+ state = {'name': name,
+ 'groups': groups or [],
+ 'from': afrom,
+ 'to': ato,
+ 'pending_in': pending_in,
+ 'pending_out': pending_out,
+ 'whitelisted': whitelisted,
+ 'subscription': 'none'}
+ self._jids[jid] = RosterItem(self.xmpp, jid, self.jid,
+ state=state, db=self.db)
+ if save:
+ self._jids[jid].save()
+
+ def subscribe(self, jid):
+ """
+ Subscribe to the given JID.
+
+ Arguments:
+ jid -- The JID to subscribe to.
+ """
+ self[jid].subscribe()
+
+ def unsubscribe(self, jid):
+ """
+ Unsubscribe from the given JID.
+
+ Arguments:
+ jid -- The JID to unsubscribe from.
+ """
+ self[jid].unsubscribe()
+
+ def remove(self, jid):
+ """
+ Remove a JID from the roster.
+
+ Arguments:
+ jid -- The JID to remove.
+ """
+ self[jid].remove()
+ if not self.xmpp.is_component:
+ self.update(jid, subscription='remove')
+
+ def update(self, jid, name=None, subscription=None, groups=[]):
+ """
+ Update a JID's subscription information.
+
+ Arguments:
+ jid -- The JID to update.
+ name -- Optional alias for the JID.
+ subscription -- The subscription state. May be one of: 'to',
+ 'from', 'both', 'none', or 'remove'.
+ groups -- A list of group names.
+ """
+ self[jid]['name'] = name
+ self[jid]['groups'] = group
+ self[jid].save()
+
+ if not self.xmpp.is_component:
+ iq = self.Iq()
+ iq['type'] = 'set'
+ iq['roster']['items'] = {jid: {'name': name,
+ 'subscription': subscription,
+ 'groups': groups}}
+ response = iq.send()
+ return response and response['type'] == 'result'
+
+ def presence(self, jid, resource=None):
+ """
+ Retrieve the presence information of a JID.
+
+ May return either all online resources' status, or
+ a single resource's status.
+
+ Arguments:
+ jid -- The JID to lookup.
+ resource -- Optional resource for returning
+ only the status of a single connection.
+ """
+ if resource is None:
+ return self[jid].resources
+
+ default_presence = {'status': '',
+ 'priority': 0,
+ 'show': ''}
+ return self[jid].resources.get(resource,
+ default_presence)
+
+ def reset(self):
+ """
+ Reset the state of the roster to forget any current
+ presence information. Useful after a disconnection occurs.
+ """
+ for jid in self:
+ self[jid].reset()