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I need a interface-library/-plugin for the CodeIgniter framework (http://www.codeigniter.com) to built a Google Apps Marketplace application. The library must make use of the CodeIgniter Framework with no adjustments to the core files (e.g. no hacking of the index.php). It shall only make use of the framework's possibilities and its flexibility on configuration and hooks (if necessary).
Google Apps Marketplace: https://www.google.com/enterprise/marketplace/
Google Apps Marketplace Developer: https://developers.google.com/google-apps/marketplace/
- it must support Single Sign On (SSO) via Google Apps for Business
- it must incorporate the Google Drive SDK
- it must provide some working sample code (e.g. create a file within a Google Apps for Business account, access some data from the user)
- it must include setup instruction to get in running in a default CI installation
- the library/plugin must properly be commented
- works with CI 2.1.3+
- may incorporate (lean) 3rd party library (e.g. for OpenID, OAuth or similar)