Book Image

Spring Security - Third Edition

By : Mick Knutson, Peter Mularien, ROBERT WILLIAM WINCH
Book Image

Spring Security - Third Edition

By: Mick Knutson, Peter Mularien, ROBERT WILLIAM WINCH

Overview of this book

Knowing that experienced hackers are itching to test your skills makes security one of the most difficult and high-pressured concerns of creating an application. The complexity of properly securing an application is compounded when you must also integrate this factor with existing code, new technologies, and other frameworks. Use this book to easily secure your Java application with the tried and trusted Spring Security framework, a powerful and highly customizable authentication and access-control framework. The book starts by integrating a variety of authentication mechanisms. It then demonstrates how to properly restrict access to your application. It also covers tips on integrating with some of the more popular web frameworks. An example of how Spring Security defends against session fixation, moves into concurrency control, and how you can utilize session management for administrative functions is also included. It concludes with advanced security scenarios for RESTful webservices and microservices, detailing the issues surrounding stateless authentication, and demonstrates a concise, step-by-step approach to solving those issues. And, by the end of the book, readers can rest assured that integrating version 4.2 of Spring Security will be a seamless endeavor from start to finish.
Table of Contents (19 chapters)

Creating a custom expression

The o.s.s.access.expression.SecurityExpresssionHandler interface is how Spring Security abstracts how the Spring expressions are created and initialized. Just as with the SecurityMetadataSource interface, there is an implementation for creating expressions for web requests and creating expressions for securing methods. In this section, we will explore how we can easily add new expressions.

Configuring a custom SecurityExpressionRoot

Let's assume that we want to support a custom web expression named isLocal that will return true if the host is localhost and false otherwise. This new method could be used to provide additional security for our SQL console by ensuring that it is only accessed...