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+## www.pubnub.com - PubNub Real-time push service in the cloud.
+# coding=utf8
+
+## PubNub Real-time Push APIs and Notifications Framework
+## Copyright (c) 2010 Stephen Blum
+## http://www.pubnub.com/
+
+## -----------------------------------
+## PubNub 3.0 Real-time Push Cloud API
+## -----------------------------------
+
+try: import json
+except ImportError: import simplejson as json
+
+import time
+import hashlib
+import urllib2
+import uuid
+
+class PubnubCore(object):
+ def __init__(
+ self,
+ publish_key,
+ subscribe_key,
+ secret_key = False,
+ ssl_on = False,
+ origin = 'pubsub.pubnub.com',
+ pres_uuid = None
+ ) :
+ """
+ #**
+ #* Pubnub
+ #*
+ #* Init the Pubnub Client API
+ #*
+ #* @param string publish_key required key to send messages.
+ #* @param string subscribe_key required key to receive messages.
+ #* @param string secret_key optional key to sign messages.
+ #* @param boolean ssl required for 2048 bit encrypted messages.
+ #* @param string origin PUBNUB Server Origin.
+ #* @param string pres_uuid optional identifier for presence (auto-generated if not supplied)
+ #**
+
+ ## Initiat Class
+ pubnub = Pubnub( 'PUBLISH-KEY', 'SUBSCRIBE-KEY', 'SECRET-KEY', False )
+
+ """
+ self.origin = origin
+ self.limit = 1800
+ self.publish_key = publish_key
+ self.subscribe_key = subscribe_key
+ self.secret_key = secret_key
+ self.ssl = ssl_on
+
+ if self.ssl :
+ self.origin = 'https://' + self.origin
+ else :
+ self.origin = 'http://' + self.origin
+
+ self.uuid = pres_uuid or str(uuid.uuid4())
+
+ if not isinstance(self.uuid, basestring):
+ raise AttributeError("pres_uuid must be a string")
+
+ def publish( self, args ) :
+ """
+ #**
+ #* Publish
+ #*
+ #* Send a message to a channel.
+ #*
+ #* @param array args with channel and message.
+ #* @return array success information.
+ #**
+
+ ## Publish Example
+ info = pubnub.publish({
+ 'channel' : 'hello_world',
+ 'message' : {
+ 'some_text' : 'Hello my World'
+ }
+ })
+ print(info)
+
+ """
+ ## Fail if bad input.
+ if not (args['channel'] and args['message']) :
+ return [ 0, 'Missing Channel or Message' ]
+
+ ## Capture User Input
+ channel = str(args['channel'])
+ message = json.dumps(args['message'], separators=(',',':'))
+
+
+ ## Capture Callback
+ if args.has_key('callback') :
+ callback = args['callback']
+ else :
+ callback = None
+
+ ## Sign Message
+ if self.secret_key :
+ signature = hashlib.md5('/'.join([
+ self.publish_key,
+ self.subscribe_key,
+ self.secret_key,
+ channel,
+ message
+ ])).hexdigest()
+ else :
+ signature = '0'
+
+ ## Send Message
+ return self._request([
+ 'publish',
+ self.publish_key,
+ self.subscribe_key,
+ signature,
+ channel,
+ '0',
+ message
+ ], callback)
+
+
+
+ def subscribe( self, args ) :
+ """
+ #**
+ #* Subscribe
+ #*
+ #* This is BLOCKING.
+ #* Listen for a message on a channel.
+ #*
+ #* @param array args with channel and callback.
+ #* @return false on fail, array on success.
+ #**
+
+ ## Subscribe Example
+ def receive(message) :
+ print(message)
+ return True
+
+ pubnub.subscribe({
+ 'channel' : 'hello_world',
+ 'callback' : receive
+ })
+
+ """
+
+ ## Fail if missing channel
+ if not 'channel' in args :
+ raise Exception('Missing Channel.')
+ return False
+
+ ## Fail if missing callback
+ if not 'callback' in args :
+ raise Exception('Missing Callback.')
+ return False
+
+ ## Capture User Input
+ channel = str(args['channel'])
+ callback = args['callback']
+ subscribe_key = args.get('subscribe_key') or self.subscribe_key
+
+ ## Begin Subscribe
+ while True :
+
+ timetoken = 'timetoken' in args and args['timetoken'] or 0
+ try :
+ ## Wait for Message
+ response = self._request(self._encode([
+ 'subscribe',
+ subscribe_key,
+ channel,
+ '0',
+ str(timetoken)
+ ])+['?uuid='+self.uuid], encode=False)
+
+ messages = response[0]
+ args['timetoken'] = response[1]
+
+ ## If it was a timeout
+ if not len(messages) :
+ continue
+
+ ## Run user Callback and Reconnect if user permits.
+ for message in messages :
+ if not callback(message) :
+ return
+
+ except Exception:
+ time.sleep(1)
+
+ return True
+
+ def presence( self, args ) :
+ """
+ #**
+ #* presence
+ #*
+ #* This is BLOCKING.
+ #* Listen for presence events on a channel.
+ #*
+ #* @param array args with channel and callback.
+ #* @return false on fail, array on success.
+ #**
+
+ ## Presence Example
+ def pres_event(message) :
+ print(message)
+ return True
+
+ pubnub.presence({
+ 'channel' : 'hello_world',
+ 'callback' : receive
+ })
+ """
+
+ ## Fail if missing channel
+ if not 'channel' in args :
+ raise Exception('Missing Channel.')
+ return False
+
+ ## Fail if missing callback
+ if not 'callback' in args :
+ raise Exception('Missing Callback.')
+ return False
+
+ ## Capture User Input
+ channel = str(args['channel'])
+ callback = args['callback']
+ subscribe_key = args.get('subscribe_key') or self.subscribe_key
+
+ return self.subscribe({'channel': channel+'-pnpres', 'subscribe_key':subscribe_key, 'callback': callback})
+
+
+ def here_now( self, args ) :
+ """
+ #**
+ #* Here Now
+ #*
+ #* Load current occupancy from a channel.
+ #*
+ #* @param array args with 'channel'.
+ #* @return mixed false on fail, array on success.
+ #*
+
+ ## Presence Example
+ here_now = pubnub.here_now({
+ 'channel' : 'hello_world',
+ })
+ print(here_now['occupancy'])
+ print(here_now['uuids'])
+
+ """
+ channel = str(args['channel'])
+
+ ## Capture Callback
+ if args.has_key('callback') :
+ callback = args['callback']
+ else :
+ callback = None
+
+ ## Fail if bad input.
+ if not channel :
+ raise Exception('Missing Channel')
+ return False
+
+ ## Get Presence Here Now
+ return self._request([
+ 'v2','presence',
+ 'sub_key', self.subscribe_key,
+ 'channel', channel
+ ], callback);
+
+
+ def history( self, args ) :
+ """
+ #**
+ #* History
+ #*
+ #* Load history from a channel.
+ #*
+ #* @param array args with 'channel' and 'limit'.
+ #* @return mixed false on fail, array on success.
+ #*
+
+ ## History Example
+ history = pubnub.history({
+ 'channel' : 'hello_world',
+ 'limit' : 1
+ })
+ print(history)
+
+ """
+ ## Capture User Input
+ limit = args.has_key('limit') and int(args['limit']) or 10
+ channel = str(args['channel'])
+
+ ## Fail if bad input.
+ if not channel :
+ raise Exception('Missing Channel')
+ return False
+
+ ## Capture Callback
+ if args.has_key('callback') :
+ callback = args['callback']
+ else :
+ callback = None
+
+ ## Get History
+ return self._request([
+ 'history',
+ self.subscribe_key,
+ channel,
+ '0',
+ str(limit)
+ ] , callback);
+
+ def detailedHistory(self, args) :
+ """
+ #**
+ #* Detailed History
+ #*
+ #* Load Detailed history from a channel.
+ #*
+ #* @param array args with 'channel', optional: 'start', 'end', 'reverse', 'count'
+ #* @return mixed false on fail, array on success.
+ #*
+
+ ## History Example
+ history = pubnub.detailedHistory({
+ 'channel' : 'hello_world',
+ 'count' : 5
+ })
+ print(history)
+
+ """
+ ## Capture User Input
+ channel = str(args['channel'])
+
+ params = []
+ count = 100
+
+ if args.has_key('count'):
+ count = int(args['count'])
+
+ params.append('count' + '=' + str(count))
+
+ if args.has_key('reverse'):
+ params.append('reverse' + '=' + str(args['reverse']).lower())
+
+ if args.has_key('start'):
+ params.append('start' + '=' + str(args['start']))
+
+ if args.has_key('end'):
+ params.append('end' + '=' + str(args['end']))
+
+ ## Fail if bad input.
+ if not channel :
+ raise Exception('Missing Channel')
+ return False
+
+ ## Capture Callback
+ if args.has_key('callback') :
+ callback = args['callback']
+ else :
+ callback = None
+
+ ## Get History
+ return self._request([
+ 'v2',
+ 'history',
+ 'sub-key',
+ self.subscribe_key,
+ 'channel',
+ channel,
+ ],params=params , callback=callback);
+
+ def time(self, args = None) :
+ """
+ #**
+ #* Time
+ #*
+ #* Timestamp from PubNub Cloud.
+ #*
+ #* @return int timestamp.
+ #*
+
+ ## PubNub Server Time Example
+ timestamp = pubnub.time()
+ print(timestamp)
+
+ """
+ ## Capture Callback
+ if args and args.has_key('callback') :
+ callback = args['callback']
+ else :
+ callback = None
+ time = self._request([
+ 'time',
+ '0'
+ ], callback)
+ if time != None:
+ return time[0]
+
+
+ def _encode( self, request ) :
+ return [
+ "".join([ ' ~`!@#$%^&*()+=[]\\{}|;\':",./<>?'.find(ch) > -1 and
+ hex(ord(ch)).replace( '0x', '%' ).upper() or
+ ch for ch in list(bit)
+ ]) for bit in request]
+
+
+
+