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<h1 class="sectionedit1" id="spring_security_acegi">Spring Security (ACEGI)</h1>
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<p>
<a href="spring_logo.png_documentation_1.9_applications_spring.html" class="media" title="applications:spring_logo.png"><img src="spring_logo.png" class="mediacenter" alt="" /></a>
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<!-- EDIT1 SECTION "Spring Security (ACEGI)" [1-77] -->
<h2 class="sectionedit2" id="presentation">Presentation</h2>
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<p>
<a href="http://static.springsource.org/spring-security/site/" class="urlextern" title="http://static.springsource.org/spring-security/site/" rel="nofollow">Spring Security</a> is the new ACEGI name. This is a well known security framework for J2EE applications.
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<p>
Spring Security provides a default <code>pre-authentication</code> mechanism that can be used to connect your J2EE application to <abbr title="LemonLDAP::NG">LL::NG</abbr>.
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<!-- EDIT2 SECTION "Presentation" [78-394] -->
<h2 class="sectionedit3" id="configuration">Configuration</h2>
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You can find all suitable information here: <a href="http://static.springsource.org/spring-security/site/docs/3.0.x/reference/preauth.html" class="urlextern" title="http://static.springsource.org/spring-security/site/docs/3.0.x/reference/preauth.html" rel="nofollow">http://static.springsource.org/spring-security/site/docs/3.0.x/reference/preauth.html</a>
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To summarize, to get the user connected trough the <code>Auth-User</code> HTTP Header, use this Sping Security configuration:
</p>
<pre class="code file xml"><span class="sc3"><span class="re1"><bean</span> <span class="re0">id</span>=<span class="st0">"LemonLDAPNGFilter"</span> <span class="re0">class</span>=</span>
<span class="sc3"><span class="st0">"org.springframework.security.web.authentication.preauth.header.RequestHeaderPreAuthenticatedProcessingFilter"</span><span class="re2">></span></span>
<span class="sc3"><span class="re1"><security:custom-filter</span> <span class="re0">position</span>=<span class="st0">"PRE_AUTH_FILTER"</span> <span class="re2">/></span></span>
<span class="sc3"><span class="re1"><property</span> <span class="re0">name</span>=<span class="st0">"principalRequestHeader"</span> <span class="re0">value</span>=<span class="st0">"Auth-User"</span><span class="re2">/></span></span>
<span class="sc3"><span class="re1"><property</span> <span class="re0">name</span>=<span class="st0">"authenticationManager"</span> <span class="re0">ref</span>=<span class="st0">"authenticationManager"</span> <span class="re2">/></span></span>
<span class="sc3"><span class="re1"></bean<span class="re2">></span></span></span>
<span class="sc3"><span class="re1"><bean</span> <span class="re0">id</span>=<span class="st0">"preauthAuthProvider"</span> <span class="re0">class</span>=<span class="st0">"org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationProvider"</span><span class="re2">></span></span>
<span class="sc3"><span class="re1"><security:custom-authentication-provider</span> <span class="re2">/></span></span>
<span class="sc3"><span class="re1"><property</span> <span class="re0">name</span>=<span class="st0">"preAuthenticatedUserDetailsService"</span><span class="re2">></span></span>
<span class="sc3"><span class="re1"><bean</span> <span class="re0">id</span>=<span class="st0">"userDetailsServiceWrapper"</span> <span class="re0">class</span>=<span class="st0">"org.springframework.security.userdetails.UserDetailsByNameServiceWrapper"</span><span class="re2">></span></span>
<span class="sc3"><span class="re1"><property</span> <span class="re0">name</span>=<span class="st0">"userDetailsService"</span> <span class="re0">ref</span>=<span class="st0">"userDetailsService"</span><span class="re2">/></span></span>
<span class="sc3"><span class="re1"></bean<span class="re2">></span></span></span>
<span class="sc3"><span class="re1"></property<span class="re2">></span></span></span>
<span class="sc3"><span class="re1"></bean<span class="re2">></span></span></span>
<span class="sc3"><span class="re1"><security:authentication-manager</span> <span class="re0">alias</span>=<span class="st0">"authenticationManager"</span> <span class="re2">/></span></span></pre>
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<!-- EDIT3 SECTION "Configuration" [395-] --></div>
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