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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
last_status -- The last sent presence status that was broadcast
to all contact JIDs.
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.
send_presence -- Shortcut for sending a presence stanza.
"""
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.last_status = None
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 __len__(self):
"""Return the number of JIDs referenced by the roster."""
return len(self._jids)
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 groups(self):
"""Return a dictionary mapping group names to JIDs."""
result = {}
for jid in self._jids:
for group in self._jids[jid]['groups']:
if group not in result:
result[group] = []
result[group].append(jid)
return result
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,
roster=self)
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:
return self.update(jid, subscription='remove')
def update(self, jid, name=None, subscription=None, groups=[],
block=True, timeout=None, callback=None):
"""
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.
block -- Specify if the roster request will block
until a response is received, or a timeout
occurs. Defaults to True.
timeout -- The length of time (in seconds) to wait
for a response before continuing if blocking
is used. Defaults to self.response_timeout.
callback -- Optional reference to a stream handler function.
Will be executed when the roster is received.
Implies block=False.
"""
self[jid]['name'] = name
self[jid]['groups'] = groups
self[jid].save()
if not self.xmpp.is_component:
iq = self.xmpp.Iq()
iq['type'] = 'set'
iq['roster']['items'] = {jid: {'name': name,
'subscription': subscription,
'groups': groups}}
return iq.send(block, timeout, callback)
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()
def send_presence(self, ptype=None, pshow=None, pstatus=None,
ppriority=None, pnick=None, pto=None):
"""
Create, initialize, and send a Presence stanza.
If no recipient is specified, send the presence immediately.
Otherwise, forward the send request to the recipient's roster
entry for processing.
Arguments:
pshow -- The presence's show value.
pstatus -- The presence's status message.
ppriority -- This connections' priority.
pto -- The recipient of a directed presence.
ptype -- The type of presence, such as 'subscribe'.
"""
if pto:
self[pto].send_presence(ptype, pshow, pstatus,
ppriority, pnick)
else:
p = self.xmpp.make_presence(pshow=pshow,
pstatus=pstatus,
ppriority=ppriority,
ptype=ptype,
pnick=pnick)
if self.xmpp.is_component:
p['from'] = self.jid
if p['type'] in p.showtypes or \
p['type'] in ['available', 'unavailable']:
self.last_status = p
p.send()
if not self.xmpp.sentpresence:
self.xmpp.event('sent_presence')
self.xmpp.sentpresence = True
def __repr__(self):
return repr(self._jids)
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