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oauthClient.py
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oauthClient.py
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import oauth as oauth
from urllib2 import Request
import httplib
from urllib import quote as urlquote,unquote as urlunquote
from google.appengine.ext import db
from cgi import parse_qs,parse_qsl
from hmac import new as hmac
from hashlib import sha1, sha256, sha512
from Crypto.Cipher import AES
import base64
# settings for the local test consumer
SERVER = 'api.t.sina.com.cn'
PORT = 80
# fake urls for the test server (matches ones in server.py)
REQUEST_TOKEN_URL = 'http://api.t.sina.com.cn/oauth/request_token'
ACCESS_TOKEN_URL = 'http://api.t.sina.com.cn/oauth/access_token'
AUTHORIZATION_URL = 'http://api.t.sina.com.cn/oauth/authorize'
CALLBACK_URL = 'http://api.t.sina.com.cn/oauth/request_token_ready'
RESOURCE_URL = 'http://photos.example.net/photos'
STATUSUPDATE_URL = 'http://api.t.sina.com.cn/statuses/update.json'
# key and secret granted by the service provider for this consumer application - same as the MockOAuthDataStore
CONSUMER_KEY = '3538199806'
CONSUMER_SECRET = '18cf587d60e11e3c160114fd92dd1f2b'
# the block size for the cipher object; must be 16, 24, or 32 for AES
BLOCK_SIZE = 32
# the character used for padding--with a block cipher such as AES, the value
# you encrypt must be a multiple of BLOCK_SIZE in length. This character is
# used to ensure that your value is always a multiple of BLOCK_SIZE
PADDING = '{'
# one-liner to sufficiently pad the text to be encrypted
pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * PADDING
# one-liners to encrypt/encode and decrypt/decode a string
# encrypt with AES, encode with base64
EncodeAES = lambda c, s: base64.b64encode(c.encrypt(pad(s)))
DecodeAES = lambda c, e: c.decrypt(base64.b64decode(e)).rstrip(PADDING)
class TempTokenModel(db.Model):
token = db.StringProperty(required=True)
secret = db.StringProperty(required=True)
created = db.DateTimeProperty(auto_now_add=True)
class AuthTokenModel(db.Model):
username = db.StringProperty(required=True)
token = db.StringProperty(required=True)
secret = db.StringProperty(required=True)
created = db.DateTimeProperty(auto_now_add=True)
def create_aes(self, self_key):
if isinstance(self_key, unicode):
self_key = self_key.encode('ascii')
if isinstance(self.username, unicode):
self.username = self.username.encode('ascii')
data = hmac(
self.username, self_key, sha512
).digest()
return AES.new(data[:32], AES.MODE_CBC,data[32:32])
def encrypt(self, self_key):
self.token = EncodeAES(self.create_aes(self_key) , self.token)
self.secret = EncodeAES(self.create_aes(self_key), self.secret)
def decrypt(self, self_key):
# logging.debug('xx_token:%s' % self.token)
self.token = DecodeAES(self.create_aes(self_key), self.token)
# logging.debug('yy_token:%s' % self.token)
self.secret = DecodeAES(self.create_aes(self_key), self.secret)
class TOAuthClient(oauth.OAuthClient):
def __init__(self, server, port=httplib.HTTP_PORT, request_token_url='', access_token_url='', authorization_url=''):
self.server = server
self.port = port
self.request_token_url = request_token_url
self.access_token_url = access_token_url
self.authorization_url = authorization_url
self.connection = httplib.HTTPConnection("%s:%d" % (self.server, self.port))
def fetch_request_token(self, oauth_request):
# via headers
# -> OAuthToken
self.connection.request(oauth_request.http_method, self.request_token_url, headers=oauth_request.to_header())
response = self.connection.getresponse()
return oauth.OAuthToken.from_string(response.read())
def fetch_access_token(self, oauth_request):
# via headers
# -> OAuthToken
self.connection.request(oauth_request.http_method, self.access_token_url, headers=oauth_request.to_header())
response = self.connection.getresponse()
result = self.extract_credentials(response.read())
return result['token'], result['secret'], result['user_id']
# from gtap
def extract_credentials(self, result):
token = None
secret = None
screen_name = None
parsed_results = parse_qs(result, keep_blank_values=False )
if "oauth_token" in parsed_results:
token = parsed_results["oauth_token"][0]
if "oauth_token_secret" in parsed_results:
secret = parsed_results["oauth_token_secret"][0]
if "user_id" in parsed_results:
user_id = parsed_results["user_id"][0]
return {
"token": token,
"secret": secret,
"user_id": user_id
}
def authorize_token(self, oauth_request):
# via url
# -> typically )ust some okay response
self.connection.request(oauth_request.http_method, oauth_request.to_url())
response = self.connection.getresponse()
return response.read()
class TSinaOauthClient():
def __init__(self, ):
self.client = TOAuthClient(SERVER, PORT, REQUEST_TOKEN_URL, ACCESS_TOKEN_URL, AUTHORIZATION_URL)
self.consumer = oauth.OAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET)
self.signature_method_plaintext = oauth.OAuthSignatureMethod_PLAINTEXT()
self.signature_method_hmac_sha1 = oauth.OAuthSignatureMethod_HMAC_SHA1()
def get_authorization_url(self, call_back=None):
oauth_request = oauth.OAuthRequest.from_consumer_and_token(self.consumer, http_url=self.client.request_token_url)
oauth_request.sign_request(self.signature_method_plaintext, self.consumer, None)
request_token = self.client.fetch_request_token(oauth_request)
self.saveTempToken(request_token)
oauth_request = oauth.OAuthRequest.from_token_and_callback(token=request_token, callback=call_back, http_url=self.client.authorization_url)
return oauth_request.to_url()
def get_access_token(self, token_, verifier_):
tokenSecret = self.restoreTokenFromKey(token_)
request_token = oauth.OAuthToken(token_, tokenSecret)
oauth_request = oauth.OAuthRequest.from_consumer_and_token(self.consumer, token=request_token, verifier=verifier_, http_url=self.client.access_token_url)
oauth_request.sign_request(self.signature_method_plaintext, self.consumer, request_token)
return self.client.fetch_access_token(oauth_request)
def saveTempToken(self, token):
res = TempTokenModel.all().filter('token =', token.key)
if res.count() > 0:
db.delete(res)
token_key = '###' + token.key
secret = '###' + token.secret
theToken = TempTokenModel(token=token_key, secret=secret)
theToken.put()
def restoreTokenFromKey(self, tokenKey):
queryKey = '###' + tokenKey
result = TempTokenModel.gql("""Where token = :1 LIMIT 1""",
queryKey).get()
if not result:
return None
else:
return result.secret[3:]
def get_access_from_db(self, username, password):
result = AuthTokenModel.gql("""
WHERE
username = :1
LIMIT
1
""", username.lower()).get()
if not result:
access_token = None
access_secret = None
else:
result.decrypt(password)
if result.token[:3]=='###' and result.secret[:3]=='###':
access_token = result.token[3:]
access_secret = result.secret[3:]
else:
access_token = None
access_secret = None
return access_token, access_secret
def save_user_info_into_db(self, username, password, token, secret):
res = AuthTokenModel.all().filter('username =', username)
if res.count() > 0:
db.delete(res)
token = '###' + token
secret = '###' + secret
auth = AuthTokenModel(
username=username.lower(),
secret=secret,
token=token)
auth.encrypt(password)
auth.put()
class WeiboClient():
"""the simple Tsina client.
"""
def __init__(self, accessToken, accessSecret):
"""class init method
Arguments:
- `accessToken`:
- `accessSecret`:
"""
self._accessToken = oauth.OAuthToken(accessToken, accessSecret)
self._connection = httplib.HTTPConnection("%s:%d" % (SERVER, PORT))
self.signature_method_hmac_sha1 = oauth.OAuthSignatureMethod_HMAC_SHA1()
self.consumer = oauth.OAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET)
def updateStatus(self, state):
"""make a tweet
Arguments:
- `state`:the tweets to send
"""
parameters = {'status': state,}
oauth_request = oauth.OAuthRequest.from_consumer_and_token(self.consumer, token=self._accessToken, http_method='POST', http_url=STATUSUPDATE_URL, parameters=parameters)
oauth_request.sign_request(self.signature_method_hmac_sha1, self.consumer, self._accessToken)
headers = {'Content-Type' :'application/x-www-form-urlencoded'}
self._connection.request('POST', STATUSUPDATE_URL, body=oauth_request.to_postdata(), headers=headers)
response = self._connection.getresponse()
#print response.read()