OAuth2 / OpenID Connect Library for PHP / ZF2
I'm involved in federated identity management, delegated authorization and RESTful web services. So it was natural that I chose to adopt the OAuth2 framework and its more specific "brother" - OpenID Connect. There are already some client implementations of OpenID Connect and even more implementations of the OAuth2 specification. But I had my own reasons, why I wrote my own implementation:
instead of a monolitic client implementation I need a library/framework which provides tools and building blocks for creating clients for different use cases
OpenID Connect is not ready yet, the specs are being changed and it is easier for me to modify and adapt my own implementation
actually, I started writing a simple client to test my server implementation, but finally it grew up to a whole library :)
In the code I tried to respect the dependency injection paradigm together with the single responsibility principle and good testability. Dependencies may be injected or created implicitly in a "lazy" manner (when they are needed). As a result, the code is fragmented into numerous objects and it may need a bit more writing to tie them together (if you do not use the implicit values). That can be solved by writing a facade such as the
InoOicClient\Flow\Basic object, which accepts a simple configuration array and does all the initialization inside.
I successfully tested the library against Google and Github, but probably more identity providers "work" out of the box. The source repository contains simple demos, but I'm planning to write more user-frienldy ones.
The library cannot be recommended for production use yet though. It hasn't been tested enough. There are some important features from the OpenID Connect specs missing - ID token validation, tools for discovery and registration etc. Anyway, I'm planning to add them in the future releases.
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