GRAILS Spring Security Plugins

Question

I am using spring security plugin for my grails app, but I have a requirement to pre-process the username before authentication, for example if user enters "domain\\username", I only need to remove domain.

I am using these plugins

    compile ":spring-security-core:2.0-RC5"
    compile ":spring-security-ldap:2.0-RC2"

Also, I cannot add a custom form, I need to use basic auth for this.Thanks.

Answer 1

I haven't done this myself, but I can give you a glimpse of what you need to do.

The LoginController doesn't handle the HTTP POST that comes from the login form. As you can see in the auth method here , the HTTP POST url comes from a configuration entry. The URL is probably /j_spring_security_check. That URL corresponds to a Spring Security filter, not a Grails controller method. Essentially, you'll need to set up a filter that intercepts /j_spring_security_check and strips off the domain from the username.

There's plenty to learn about these filters. I'm still figuring it all out, but a good resource is the Spring Security Reference . The Twitter Auth plugin subclasses AbstractAuthenticationProcessingFilter , implements attemptAuthentication() , and then registers the filter using SpringSecurityUtils.registerFilter() .

Answer 2

我可以通过重写BasicAuthenticationFilter并根据需要将doFilter（）方法更改为自定义方法来解决此问题。