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POlooking for good example/template for openid + oauth hybrid with python in Google App Engine
 

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  1. POlooking for good example/template for openid + oauth hybrid with python in Google App Engine
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    <p>I have implemented oauth and openid separately (that is, sign in with OpenId, separate authorization to Google Data API with OAuth) and would like to combine them. </p> <p>Currently I have the following in my app.yaml</p> <pre><code>- url: /_ah/login_required script: main.py - url: .* script: main.py login: required </code></pre> <p>Then, in main.py I have: (imports removed for clarity)</p> <pre><code>def getClient(): client = gdata.calendar.service.CalendarService() consumer_key = 'my-app.appspot.com' consumer_secret = 'consumersecret' client.SetOAuthInputParameters( gdata.auth.OAuthSignatureMethod.HMAC_SHA1, consumer_key=consumer_key, consumer_secret=consumer_secret) gdata.alt.appengine.run_on_appengine(client) return client class OAuthOne(webapp.RequestHandler): def get(self): client = getClient() request_token = client.FetchOAuthRequestToken(oauth_callback='http://my-app.appspot.com/oauth2') client.SetOAuthToken(request_token) auth_url = client.GenerateOAuthAuthorizationURL() self.redirect( auth_url ) class OAuthTwo(webapp.RequestHandler): def get(self): client = getClient() token_from_url = gdata.auth.OAuthTokenFromUrl(self.request.uri) if not token_from_url: self.redirect('/oauth') else: client.SetOAuthToken(token_from_url) oauth_verifier = self.request.get('oauth_verifier', default_value='') client.UpgradeToOAuthAccessToken(oauth_verifier=oauth_verifier) self.redirect('/') class MainPage(webapp.RequestHandler): def get(self): self.user = users.get_current_user() self.template_values = {} if self.user: # do calendar api stuff here self.template_file = 'templates/index.html' else: self.template_file = 'templates/denied.html' path = os.path.join(os.path.dirname(__file__), self.template_file) self.response.out.write( template.render(path, self.template_values) ) application = webapp.WSGIApplication( [('/oauth', OAuthOne), ('/oauth2', OAuthTwo), ('/_ah/login_required', OpenIDHandler), ('/', MainPage)], debug=True) def main(): run_wsgi_app(application) if __name__ == "__main__": main() </code></pre> <p>also in main.py, from <a href="http://code.google.com/googleapps/marketplace/tutorial_python_gae.html">http://code.google.com/googleapps/marketplace/tutorial_python_gae.html</a></p> <pre><code>class OpenIDHandler(webapp.RequestHandler): def get(self): """Begins the OpenID flow and begins Google Apps discovery for the supplied domain.""" login_url = users.create_login_url(dest_url='http://my-app.appspot.com/', _auth_domain=None, federated_identity='gmail.com') self.redirect( login_url ) </code></pre> <p>As for the hybrid protocol, there is a PHP example <a href="http://code.google.com/p/gdata-samples/source/browse/trunk/hybrid/index.php">here</a>, and a java example <a href="http://code.google.com/p/step2/">here</a> but I cannot find anything for python. </p> <p>I assume that the start of the magic will need to happen in my OpenIDHandler, and that I need to use something other than <code>users.create_login_url()</code>. Google's documentation <a href="http://code.google.com/apis/accounts/docs/OpenID.html#settingup">here</a> tells me that I need to 'Create the mechanism for performing discovery and making authentication requests.' and 'Add OAuth capability to authentication requests' (more docs <a href="http://code.google.com/apis/accounts/docs/OpenID.html#oauth">here</a> ), but as far as I can tell, not how to do it. At least not with Python.</p> <p>There is an example of a raw http request a little lower on <a href="http://code.google.com/apis/accounts/docs/OpenID.html">this page</a></p> <pre><code>https://www.google.com/accounts/o8/id ?openid.ns=http://specs.openid.net/auth/2.0 &amp;openid.claimed_id=http://specs.openid.net/auth/2.0/identifier_select &amp;openid.identity=http://specs.openid.net/auth/2.0/identifier_select &amp;openid.return_to=http://www.example.com/checkauth &amp;openid.realm=http://www.example.com &amp;openid.assoc_handle=ABSmpf6DNMw &amp;openid.mode=checkid_setup &amp;openid.ns.oauth=http://specs.openid.net/extensions/oauth/1.0 &amp;openid.oauth.consumer=www.example.com &amp;openid.oauth.scope=http://docs.google.com/feeds/+http://spreadsheets.google.com/feeds/ </code></pre> <p>But I'm not sure how to use this.</p> <p>So apart from helping this become a shining example of a best practice, I really need to know how to 'Add OAuth capability to authentication requests'.</p>
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    1. COI have the same problem, I would like to use hybrid protocol in python but i have not found any example. Did you managed with it?. If yes, please post example of code.
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