com.vdenotaris.spring.boot.security.saml.web.contollers.SSOController.java Source code

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Here is the source code for com.vdenotaris.spring.boot.security.saml.web.contollers.SSOController.java

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/*
 * Copyright 2014 Vincenzo De Notaris
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */

package com.vdenotaris.spring.boot.security.saml.web.contollers;

import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.saml.metadata.MetadataManager;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/saml")
public class SSOController {

    // Logger
    private static final Logger LOG = LoggerFactory.getLogger(SSOController.class);

    @Autowired
    private MetadataManager metadata;

    @RequestMapping(value = "/idpSelection", method = RequestMethod.GET)
    public String idpSelection(HttpServletRequest request, Model model) {
        if (!(SecurityContextHolder.getContext().getAuthentication() instanceof AnonymousAuthenticationToken)) {
            LOG.warn("The current user is already logged.");
            return "redirect:/landing";
        } else {
            if (isForwarded(request)) {
                Set<String> idps = metadata.getIDPEntityNames();
                for (String idp : idps)
                    LOG.info("Configured Identity Provider for SSO: " + idp);
                model.addAttribute("idps", idps);
                return "saml/idpselection";
            } else {
                LOG.warn("Direct accesses to '/idpSelection' route are not allowed");
                return "redirect:/";
            }
        }
    }

    /*
     * Checks if an HTTP request is forwarded from servlet.
     */
    private boolean isForwarded(HttpServletRequest request) {
        if (request.getAttribute("javax.servlet.forward.request_uri") == null)
            return false;
        else
            return true;
    }

}