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| author | gcohen | 2013-10-08 18:43:16 -0700 |
|---|---|---|
| committer | gcohen | 2013-10-08 18:43:16 -0700 |
| commit | cb4b18841fa719ce982b06002889831aedd287ac (patch) | |
| tree | 81bf5d1ee8eb06281bedf80e440a1249cf7781a0 /python/Pubnub.py | |
| parent | aaca8fb7cd2f6534cd87fc23efc82d2128b05e13 (diff) | |
| parent | 52c51378b4647911a64c8d4b1c759756d4930d4b (diff) | |
| download | pubnub-python-cb4b18841fa719ce982b06002889831aedd287ac.tar.bz2 | |
Merge branch 'TR-89.88.56.47.55'
Conflicts:
.gitignore
Diffstat (limited to 'python/Pubnub.py')
| -rw-r--r-- | python/Pubnub.py | 646 |
1 files changed, 646 insertions, 0 deletions
diff --git a/python/Pubnub.py b/python/Pubnub.py new file mode 100644 index 0000000..b1d1777 --- /dev/null +++ b/python/Pubnub.py @@ -0,0 +1,646 @@ +## 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 3.3.4 Real-time Push Cloud API +## ----------------------------------- + + +from Crypto.Cipher import AES +from Crypto.Hash import MD5 +from base64 import encodestring, decodestring +import hashlib +import hmac + +class PubnubCrypto() : + """ + #** + #* PubnubCrypto + #* + #** + + ## Initiate Class + pc = PubnubCrypto + + """ + + def pad( self, msg, block_size=16 ): + """ + #** + #* pad + #* + #* pad the text to be encrypted + #* appends a padding character to the end of the String + #* until the string has block_size length + #* @return msg with padding. + #** + """ + padding = block_size - (len(msg) % block_size) + return msg + chr(padding)*padding + + def depad( self, msg ): + """ + #** + #* depad + #* + #* depad the decryptet message" + #* @return msg without padding. + #** + """ + return msg[0:-ord(msg[-1])] + + def getSecret( self, key ): + """ + #** + #* getSecret + #* + #* hases the key to MD5 + #* @return key in MD5 format + #** + """ + return hashlib.sha256(key).hexdigest() + + def encrypt( self, key, msg ): + """ + #** + #* encrypt + #* + #* encrypts the message + #* @return message in encrypted format + #** + """ + secret = self.getSecret(key) + Initial16bytes='0123456789012345' + cipher = AES.new(secret[0:32],AES.MODE_CBC,Initial16bytes) + enc = encodestring(cipher.encrypt(self.pad(msg))) + return enc + def decrypt( self, key, msg ): + """ + #** + #* decrypt + #* + #* decrypts the message + #* @return message in decryped format + #** + """ + secret = self.getSecret(key) + Initial16bytes='0123456789012345' + cipher = AES.new(secret[0:32],AES.MODE_CBC,Initial16bytes) + return self.depad((cipher.decrypt(decodestring(msg)))) + + +try: import json +except ImportError: import simplejson as json + +import time +import hashlib +import urllib2 +import uuid + +class PubnubBase(object): + def __init__( + self, + publish_key, + subscribe_key, + secret_key = False, + cipher_key = False, + ssl_on = False, + origin = 'pubsub.pubnub.com', + 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.cipher_key = cipher_key + self.ssl = ssl_on + + if self.ssl : + self.origin = 'https://' + self.origin + else : + self.origin = 'http://' + self.origin + + self.uuid = UUID or str(uuid.uuid4()) + + if not isinstance(self.uuid, basestring): + raise AttributeError("pres_uuid must be a string") + + def sign(self, channel, message): + ## 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' + return signature + + def encrypt(self, message): + if self.cipher_key: + pc = PubnubCrypto() + out = [] + if type( message ) == type(list()): + for item in message: + encryptItem = pc.encrypt(self.cipher_key, item ).rstrip() + out.append(encryptItem) + message = json.dumps(out) + elif type( message ) == type(dict()): + outdict = {} + for k, item in message.iteritems(): + encryptItem = pc.encrypt(self.cipher_key, item ).rstrip() + outdict[k] = encryptItem + out.append(outdict) + message = json.dumps(out[0]) + else: + message = json.dumps(pc.encrypt(self.cipher_key, json.dumps(message)).replace('\n','')) + else : + message = json.dumps(message) + + return message; + + def decrypt(self, message): + if self.cipher_key: + pc = PubnubCrypto() + if type( message ) == type(list()): + for item in message: + encryptItem = pc.decrypt(self.cipher_key, item ) + out.append(encryptItem) + message = out + elif type( message ) == type(dict()): + outdict = {} + for k, item in message.iteritems(): + encryptItem = pc.decrypt(self.cipher_key, item ) + outdict[k] = encryptItem + out.append(outdict) + message = out[0] + else: + message = pc.decrypt(self.cipher_key, message) + + return message + + + 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']) + + ## Capture Callback + if args.has_key('callback') : + callback = args['callback'] + else : + callback = None + + #message = json.dumps(args['message'], separators=(',',':')) + message = self.encrypt(args['message']) + + signature = self.sign(channel, message) + + ## Send Message + return self._request({"urlcomponents": [ + 'publish', + self.publish_key, + self.subscribe_key, + signature, + channel, + '0', + message + ]}, callback) + + 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({"urlcomponents": [ + '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({ "urlcomponents" : [ + '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 = dict() + count = 100 + + if args.has_key('count'): + count = int(args['count']) + + params['count'] = str(count) + + if args.has_key('reverse'): + params['reverse'] = str(args['reverse']).lower() + + if args.has_key('start'): + params['start'] = str(args['start']) + + if args.has_key('end'): + params['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({ 'urlcomponents' : [ + 'v2', + 'history', + 'sub-key', + self.subscribe_key, + 'channel', + channel, + ],'urlparams' : 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({'urlcomponents' : [ + 'time', + '0' + ]}, callback) + if time != None: + return time[0] + + + def _encode( self, request ) : + return [ + "".join([ ' ~`!@#$%^&*()+=[]\\{}|;\':",./<>?'.find(ch) > -1 and + hex(ord(ch)).replace( '0x', '%' ).upper() or + ch for ch in list(bit) + ]) for bit in request] + + def getUrl(self,request): + ## Build URL + url = self.origin + '/' + "/".join([ + "".join([ ' ~`!@#$%^&*()+=[]\\{}|;\':",./<>?'.find(ch) > -1 and + hex(ord(ch)).replace( '0x', '%' ).upper() or + ch for ch in list(bit) + ]) for bit in request["urlcomponents"]]) + if (request.has_key("urlparams")): + url = url + '?' + "&".join([ x + "=" + y for x,y in request["urlparams"].iteritems()]) + return url + + +class PubnubCore(PubnubBase): + def __init__( + self, + publish_key, + subscribe_key, + secret_key = False, + cipher_key = False, + ssl_on = False, + origin = 'pubsub.pubnub.com', + 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 ) + + """ + super(PubnubCore, self).__init__( + publish_key=publish_key, + subscribe_key=subscribe_key, + secret_key=secret_key, + cipher_key=cipher_key, + ssl_on=ssl_on, + origin=origin, + UUID=uuid + ) + + self.subscriptions = {} + self.timetoken = 0 + self.version = '3.4' + self.accept_encoding = 'gzip' + + + + 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 + + + +class Pubnub(PubnubCore): + def __init__( + self, + publish_key, + subscribe_key, + secret_key = False, + cipher_key = False, + ssl_on = False, + origin = 'pubsub.pubnub.com', + pres_uuid = None + ) : + super(Pubnub, self).__init__( + publish_key = publish_key, + subscribe_key = subscribe_key, + secret_key = secret_key, + cipher_key = cipher_key, + ssl_on = ssl_on, + origin = origin, + uuid = pres_uuid + ) + + def _request( self, request, callback = None ) : + ## Build URL + url = self.getUrl(request) + + ## Send Request Expecting JSONP Response + try: + try: usock = urllib2.urlopen( url, None, 310 ) + except TypeError: usock = urllib2.urlopen( url, None ) + response = usock.read() + usock.close() + resp_json = json.loads(response) + except: + return None + + if (callback): + callback(resp_json) + else: + return resp_json |
