lti.py 文件源码

def create_from_request(cls: t.Type['LTI'], req: flask.Request) -> 'LTI':
        params = req.form.copy()

        lti_provider = models.LTIProvider.query.filter_by(
            key=params['oauth_consumer_key']
        ).first()
        if lti_provider is None:
            lti_provider = models.LTIProvider(key=params['oauth_consumer_key'])
            db.session.add(lti_provider)
            db.session.commit()

        params['lti_provider_id'] = lti_provider.id

        # This is semi sensitive information so it should not end up in the JWT
        # token.
        launch_params = {}
        for key, value in params.items():
            if not key.startswith('oauth'):
                launch_params[key] = value

        self = cls(launch_params, lti_provider)

        auth.ensure_valid_oauth(self.key, self.secret, req)

        return self