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renren.py
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renren.py
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#!/usr/bin/env python
import logging
import urllib
import hashlib
from tornado import httpclient
from tornado import gen
from tornado.escape import json_decode
from tornado.httputil import url_concat
class RenrenGraphMixin(object):
_OAUTH_AUTHORIZE_URL = "https://graph.renren.com/oauth/authorize"
_OAUTH_ACCESS_TOKEN_URL = "https://graph.renren.com/oauth/token"
_OAUTH_URL = "https://graph.renren.com/"
@gen.engine
def renren_request(self, path, access_token, callback,
post_args=None, **args):
http = httpclient.AsyncHTTPClient()
url = self._OAUTH_URL + path
if post_args:
#TODO as renren has not release graph resource support
# method POST
pass
else:
args.update({'oauth_token': access_token})
http.fetch(
url_concat(url, args),
callback=(yield gen.Callback('_RenrenGraphMixin.renren_request'))
)
response = yield gen.Wait('_RenrenGraphMixin.renren_request')
if response.error and not response.body:
logging.warning("Error response %s fetching %s", response.error,
response.request.url)
callback(None)
return
callback(response)
return
@gen.engine
def get_authenticated_user(self, redirect_uri, callback,
scope=None, **args):
"""
class RenrenHandler(tornado.web.RequestHandler, RenrenGraphMixin):
@tornado.web.asynchronous
@gen.engine
def get(self):
self.get_authenticated_user(
callback=(yield gen.Callback('key')),
redirect_uri=url)
user = yield gen.Wait('key')
if not user:
raise web.HTTPError(500, "Renren auth failed")
# do something else
self.finish()
"""
code = self.get_argument('code', None)
if not code:
self.authorize_redirect(redirect_uri, scope=scope, **args)
return
self.get_access_token(
code,
callback=(yield gen.Callback('_RenrenGraphMixin.get_authenticated_user')),
redirect_uri=redirect_uri)
response = yield gen.Wait('_RenrenGraphMixin.get_authenticated_user')
if not response:
callback(None)
return
try:
user = json_decode(response.body)
except:
logging.warning("Error response %s fetching %s", response.body,
response.request.url)
callback(None)
return
if 'error' in user:
logging.warning(
"Error response %s fetching %s", user['error_description'],
response.request.url)
callback(None)
return
#{{{ get session key
self.renren_request(
'renren_api/session_key', user['access_token'],
callback=(yield gen.Callback('_RenrenGraphMixin._session_key'))
)
response = yield gen.Wait('_RenrenGraphMixin._session_key')
if response.error and not response.body:
logging.warning(
"Error response %s fetching %s", response.error,
response.request.url)
elif response.error:
logging.warning(
"Error response %s fetching %s: %s", response.error,
response.request.url, response.body)
else:
try:
user['session'] = json_decode(response.body)
except:
pass
#}}} #TODO delete when renren graph api released
callback(user)
return
def authorize_redirect(self, redirect_uri, response_type='code',
scope=None, **args):
consumer_token = self._oauth_consumer_token()
all_args = {
'client_id': consumer_token['client_id'],
'redirect_uri': redirect_uri,
'response_type': response_type,
}
if scope:
all_args.update({'scope': scope})
args.update(all_args)
self.redirect(url_concat(self._OAUTH_AUTHORIZE_URL, args))
@gen.engine
def get_access_token(self, code, callback, grant_type='code',
redirect_uri=None):
if grant_type == 'refresh_token':
args = {
'grant_type': 'refresh_token',
'refresh_token': code,
}
elif redirect_uri:
args = {
'grant_type': 'authorization_code',
'code': code,
'redirect_uri': redirect_uri,
}
else:
logging.error(
'Renren Get Access Token Error. redirect_uri required'
)
return
args.update(self._oauth_consumer_token())
http = httpclient.AsyncHTTPClient()
http.fetch(
url_concat(self._OAUTH_ACCESS_TOKEN_URL, args),
callback=(yield gen.Callback('_RenrenGraphMixin.get_access_token'))
)
response = yield gen.Wait('_RenrenGraphMixin.get_access_token')
if response.error and not response.body:
logging.warning("Error response %s fetching %s", response.error,
response.request.url)
callback(None)
return
callback(response)
return
def _oauth_consumer_token(self):
self.require_setting("renren_client_id", "Renren Client ID")
self.require_setting("renren_client_secret", "Renren Client Secret")
token = dict(client_id=self.settings["renren_client_id"],
client_secret=self.settings["renren_client_secret"])
return token
class RenrenRestMixin(object):
"""
API document at http://wiki.dev.renren.com/wiki/API
use renren_request to get resource.
you need not specify paramters of 'v', 'format',
'sig', they were built in.
"""
_REST_SERVER = 'http://api.renren.com/restserver.do'
_VERSION = '1.0'
@gen.engine
def renren_request(self, callback, **args):
args.update({'v': self._VERSION, 'format': 'JSON'})
token = self._oauth_consumer_token()
args = self._generate_signature(token['client_secret'], **args)
http = httpclient.AsyncHTTPClient()
http.fetch(
self._REST_SERVER, method='POST', body=urllib.urlencode(args),
callback=(yield gen.Callback('_RenrenRestMixin.renren_request'))
)
response = yield gen.Wait('_RenrenRestMixin.renren_request')
if response.error and not response.body:
logging.warning("Error response %s fetching %s", response.error,
response.request.url)
callback(None)
return
if response.error:
logging.warning(
"Error response %s fetching %s: %s", response.error,
response.request.url, response.body)
result = json_decode(response.body)
callback(result)
return
def _generate_signature(self, secret, **args):
s = ''
for key in sorted(args):
s += '%s=%s' % (key, args[key])
s += secret
sig = hashlib.md5(s).hexdigest()
args.update({'sig': sig})
return args
def _oauth_consumer_token(self):
self.require_setting("renren_client_id", "Renren Client ID")
self.require_setting("renren_client_secret", "Renren Client Secret")
token = dict(client_id=self.settings["renren_client_id"],
client_secret=self.settings["renren_client_secret"])
return token