br.com.jreader.util.security.URLAuthenticationSuccessHandler.java Source code

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Here is the source code for br.com.jreader.util.security.URLAuthenticationSuccessHandler.java

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package br.com.jreader.util.security;

import java.io.IOException;
import java.util.Collection;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.WebAttributes;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;

/**
 *
 * @author Jonathan
 */
public class URLAuthenticationSuccessHandler implements AuthenticationSuccessHandler {

    protected final Log logger = LogFactory.getLog(this.getClass());
    private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

    protected URLAuthenticationSuccessHandler() {
        super();
    }

    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
            Authentication authentication) throws IOException, ServletException {
        handle(request, response, authentication);
        clearAuthenticationAttributes(request);
    }

    private void handle(HttpServletRequest request, HttpServletResponse response, Authentication authentication)
            throws IOException {
        String targetUrl = determineTargetUrl(authentication);

        if (response.isCommitted()) {
            logger.debug("Response has already been committed. Unable to redirect to " + targetUrl);
            return;
        }
        redirectStrategy.sendRedirect(request, response, targetUrl);
    }

    private String determineTargetUrl(Authentication authentication) {
        boolean isCommon = false;
        boolean isAdmin = false;
        Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
        OUTER: for (GrantedAuthority grantedAuthority : authorities) {
            switch (grantedAuthority.getAuthority()) {
            case "ROLE_USER":
                isCommon = true;
                break;
            case "ROLE_ADMIN":
                isAdmin = true;
                break;
            }
        }

        if (isCommon) {
            return "/protected/main.xhtml";
        } else if (isAdmin) {
            return "/protected/main.xhtml?admin=true";
        } else {
            throw new IllegalStateException();
        }
    }

    protected void clearAuthenticationAttributes(HttpServletRequest request) {
        HttpSession session = request.getSession(false);
        if (session == null) {
            return;
        }
        session.removeAttribute(WebAttributes.AUTHENTICATION_EXCEPTION);
    }

    public void setRedirectStrategy(RedirectStrategy redirectStrategy) {
        this.redirectStrategy = redirectStrategy;
    }

    public RedirectStrategy getRedirectStrategy() {
        return redirectStrategy;
    }
}