Google OAuth2 Demonstration v1.0

This is an example application implementing Google OAuth2 authentication for a C# web application. This software is provided AS IS by A Better Geek and is solely for testing purposes. Please remember to test all code thoroughly in your own application before moving to production.

Some notes:

When viewing the source code of this ASPX page, please focus on the code between the "SAMPLE CODE" commented lines.
Click the "Delete Cookies" button when you're done testing, or to reset your saved client ID and client secret.
The code behind page is heavily commented to aid in your own understanding of the authentication process.
For your reference, this sample project is based on the following A Better Geek articles:

<% if (Request.Cookies["client_id"] == null && Request.Form["client_id"] == null && Session["loggedin"] != "yes") { %>

You are seeing this message because you have not configured the application yet. Setting the below parameters will create local browser cookies storing each parameter. In order to protect your application's client secret, please remember to clear the cookies for this page when you are done testing!

If you haven't already done so, you need to first go to Google's API Console and create your application. Note down your client id and client secret for use in the below form. You also need to use the URL of this page, including the port number for localhost, as the redirect URI for your application.

<% } else if (Request.Cookies["client_id"] == null && Request.Form["client_id"] != null) { %> <% //write POSTDATA to cookies Response.Cookies["client_id"].Value = Request.Form["client_id"]; Response.Cookies["client_secret"].Value = Request.Form["client_secret"]; Response.Cookies["redirect_uri"].Value = Request.Form["redirect_uri"]; Response.Redirect(Request.Form["redirect_uri"]); %> <% } else { %>