Package org.springframework.security.web.authentication.www

Class BasicAuthenticationFilter

java.lang.Object
org.springframework.web.filter.GenericFilterBean
org.springframework.web.filter.OncePerRequestFilter
org.springframework.security.web.authentication.www.BasicAuthenticationFilter
All Implemented Interfaces:
javax.servlet.Filter, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.context.EnvironmentAware, org.springframework.core.env.EnvironmentCapable, org.springframework.web.context.ServletContextAware
Direct Known Subclasses:
ConditionalBasicAuthenticationFilter
public class BasicAuthenticationFilter extends org.springframework.web.filter.OncePerRequestFilter
Processes a HTTP request's BASIC authorization headers, putting the result into the SecurityContextHolder.

For a detailed background on what this filter is designed to process, refer to RFC 1945, Section 11.1. Any realm name presented in the HTTP request is ignored.

In summary, this filter is responsible for processing any request that has a HTTP request header of Authorization with an authentication scheme of Basic and a Base64-encoded username:password token. For example, to authenticate user "Aladdin" with password "open sesame" the following header would be presented: 


 Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==

This filter can be used to provide BASIC authentication services to both remoting protocol clients (such as Hessian and SOAP) as well as standard user agents (such as Internet Explorer and Netscape).

If authentication is successful, the resulting Authentication object will be placed into the SecurityContextHolder.

If authentication fails and ignoreFailure is false (the default), an AuthenticationEntryPoint implementation is called (unless the ignoreFailure property is set to true). Usually this should be BasicAuthenticationEntryPoint, which will prompt the user to authenticate again via BASIC authentication.

Basic authentication is an attractive protocol because it is simple and widely deployed. However, it still transmits a password in clear text and as such is undesirable in many situations. Digest authentication is also provided by Spring Security and should be used instead of Basic authentication wherever possible. See DigestAuthenticationFilter.

Note that if a RememberMeServices is set, this filter will automatically send back remember-me details to the client. Therefore, subsequent requests will not need to present a BASIC authentication header as they will be authenticated using the remember-me mechanism.

Author:
Ben Alex

  • Field Summary

    Fields inherited from class org.springframework.web.filter.OncePerRequestFilter

    ALREADY_FILTERED_SUFFIX

  • Constructor Summary

    Constructors
    Constructor
    Description
    BasicAuthenticationFilter(org.springframework.security.authentication.AuthenticationManager authenticationManager)
    Creates an instance which will authenticate against the supplied AuthenticationManager and which will ignore failed authentication attempts, allowing the request to proceed down the filter chain.
    BasicAuthenticationFilter(org.springframework.security.authentication.AuthenticationManager authenticationManager, org.springframework.security.web.AuthenticationEntryPoint authenticationEntryPoint)
    Creates an instance which will authenticate against the supplied AuthenticationManager and use the supplied AuthenticationEntryPoint to handle authentication failures.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    afterPropertiesSet()
     
    void
    setAuthenticationDetailsSource(org.springframework.security.authentication.AuthenticationDetailsSource<javax.servlet.http.HttpServletRequest,?> authenticationDetailsSource)
     
    void
    setCredentialsCharset(String credentialsCharset)
     
    void
    setRememberMeServices(org.springframework.security.web.authentication.RememberMeServices rememberMeServices)
     

    Methods inherited from class org.springframework.web.filter.OncePerRequestFilter

    doFilter

    Methods inherited from class org.springframework.web.filter.GenericFilterBean

    destroy, getEnvironment, getFilterConfig, init, setBeanName, setEnvironment, setServletContext

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • BasicAuthenticationFilter

      public BasicAuthenticationFilter(org.springframework.security.authentication.AuthenticationManager authenticationManager)
      Creates an instance which will authenticate against the supplied AuthenticationManager and which will ignore failed authentication attempts, allowing the request to proceed down the filter chain.
      Parameters:
      authenticationManager - the bean to submit authentication requests to

    • BasicAuthenticationFilter

      public BasicAuthenticationFilter(org.springframework.security.authentication.AuthenticationManager authenticationManager, org.springframework.security.web.AuthenticationEntryPoint authenticationEntryPoint)
      Creates an instance which will authenticate against the supplied AuthenticationManager and use the supplied AuthenticationEntryPoint to handle authentication failures.
      Parameters:
      authenticationManager - the bean to submit authentication requests to
      authenticationEntryPoint - will be invoked when authentication fails. Typically an instance of BasicAuthenticationEntryPoint.

  • Method Details

    • afterPropertiesSet

      public void afterPropertiesSet()
      Specified by:
      afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean
      Overrides:
      afterPropertiesSet in class org.springframework.web.filter.GenericFilterBean

    • setAuthenticationDetailsSource

      public void setAuthenticationDetailsSource(org.springframework.security.authentication.AuthenticationDetailsSource<javax.servlet.http.HttpServletRequest,?> authenticationDetailsSource)

    • setRememberMeServices

      public void setRememberMeServices(org.springframework.security.web.authentication.RememberMeServices rememberMeServices)

    • setCredentialsCharset

      public void setCredentialsCharset(String credentialsCharset)