be.fedict.hsm.admin.webapp.security.AuthenticationController.java Source code

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Here is the source code for be.fedict.hsm.admin.webapp.security.AuthenticationController.java

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/*
 * HSM Proxy Project.
 * Copyright (C) 2013 FedICT.
 * Copyright (C) 2013 Frank Cornelis.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, see 
 * http://www.gnu.org/licenses/.
 */

package be.fedict.hsm.admin.webapp.security;

import java.security.Principal;
import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;

import javax.faces.application.Application;
import javax.faces.application.ConfigurableNavigationHandler;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.event.ComponentSystemEvent;
import javax.inject.Inject;
import javax.inject.Named;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import be.fedict.eid.applet.service.Identity;
import be.fedict.eid.applet.service.cdi.BelgianCertificate;
import be.fedict.eid.applet.service.cdi.BelgianCertificate.CERTIFICATE_TYPE;
import be.fedict.hsm.model.security.AdministratorRoles;
import be.fedict.hsm.model.security.SecurityFunction;

@Named("hsmProxyAuthentication")
@SecurityFunction("SF.I&A.2")
public class AuthenticationController {

    private static final Log LOG = LogFactory.getLog(AuthenticationController.class);

    @Inject
    private Identity identity;

    @Inject
    @BelgianCertificate(CERTIFICATE_TYPE.AUTH)
    X509Certificate authenticationCertificate;

    public void login(ComponentSystemEvent event) {
        LOG.debug("login");
        FacesContext facesContext = FacesContext.getCurrentInstance();
        if (facesContext.getResponseComplete()) {
            return;
        }
        if (null == this.authenticationCertificate) {
            /*
             * Caused by a direct navigation to post-login.jsf
             */
            redirect(facesContext, "/index.xhtml");
            return;
        }
        byte[] encodedCertificate;
        try {
            encodedCertificate = this.authenticationCertificate.getEncoded();
        } catch (CertificateEncodingException e) {
            LOG.error("certificate encoding error: " + e.getMessage(), e);
            return;
        }
        /*
         * The challenged certificate is the unique user identifier.
         */
        String username = DigestUtils.sha1Hex(encodedCertificate);
        String password = this.identity.getCardNumber();
        ExternalContext externalContext = facesContext.getExternalContext();
        HttpServletRequest httpServletRequest = (HttpServletRequest) externalContext.getRequest();
        try {
            httpServletRequest.login(username, password);
        } catch (ServletException e) {
            LOG.error("login error: " + e.getMessage(), e);
            accessDenied(facesContext);
            return;
        }
        Principal userPrincipal = httpServletRequest.getUserPrincipal();
        if (null == userPrincipal) {
            accessDenied(facesContext);
            return;
        }
        LOG.debug("user principal: " + userPrincipal.getName());
        LOG.debug("admin role: " + httpServletRequest.isUserInRole(AdministratorRoles.ADMINISTRATOR));
        if (false == httpServletRequest.isUserInRole(AdministratorRoles.ADMINISTRATOR)) {
            accessDenied(facesContext);
            return;
        }
        String targetViewId = SecurityPhaseListener.getTargetViewId(externalContext);
        redirect(facesContext, targetViewId);
    }

    public String logout() {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        ExternalContext externalContext = facesContext.getExternalContext();
        HttpServletRequest httpServletRequest = (HttpServletRequest) externalContext.getRequest();
        try {
            httpServletRequest.logout();
        } catch (ServletException e) {
            LOG.error("logout error: " + e.getMessage(), e);
        }
        return "/index.xhtml";
    }

    public boolean isLoggedIn() {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        ExternalContext externalContext = facesContext.getExternalContext();
        HttpServletRequest httpServletRequest = (HttpServletRequest) externalContext.getRequest();
        Principal userPrincipal = httpServletRequest.getUserPrincipal();
        return null != userPrincipal;
    }

    public String getName() {
        return this.identity.getFirstName() + " " + this.identity.getName();
    }

    public String getCardNumber() {
        return this.identity.getCardNumber();
    }

    private void accessDenied(FacesContext facesContext) {
        redirect(facesContext, "/access-denied.xhtml");
    }

    private void redirect(FacesContext facesContext, String viewId) {
        Application application = facesContext.getApplication();
        ConfigurableNavigationHandler configurableNavigationHandler = (ConfigurableNavigationHandler) application
                .getNavigationHandler();
        configurableNavigationHandler.performNavigation(viewId + "?faces-redirect=true");
    }
}