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

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

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/*
 * HSM Proxy Project.
 * Copyright (C) 2013 FedICT.
 *
 * 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.io.Serializable;
import java.lang.reflect.Method;
import java.security.Principal;

import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import be.fedict.hsm.model.security.SecurityFunction;

@Interceptor
@RolesAllowed
@SecurityFunction("SF.I&A.2")
public class SecurityInterceptor implements Serializable {

    private static final long serialVersionUID = 1L;

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

    @AroundInvoke
    public Object securityVerification(InvocationContext invocationContext) throws Exception {
        Method method = invocationContext.getMethod();
        Class<?> clazz = invocationContext.getMethod().getDeclaringClass();
        LOG.trace("security verification: " + clazz.getSimpleName() + "." + method.getName());
        RolesAllowed rolesAllowedAnnotation = method.getAnnotation(RolesAllowed.class);
        if (null == rolesAllowedAnnotation) {
            rolesAllowedAnnotation = clazz.getAnnotation(RolesAllowed.class);
        }
        String[] allowedRoles = rolesAllowedAnnotation.value();

        FacesContext facesContext = FacesContext.getCurrentInstance();
        ExternalContext externalContext = facesContext.getExternalContext();
        HttpServletRequest httpServletRequest = (HttpServletRequest) externalContext.getRequest();
        Principal userPrincipal = httpServletRequest.getUserPrincipal();
        if (null == userPrincipal) {
            throw new SecurityException("user not logged in");
        }

        boolean userInRole = false;
        for (String allowedRole : allowedRoles) {
            if (httpServletRequest.isUserInRole(allowedRole)) {
                LOG.trace("user in role: " + allowedRole);
                userInRole = true;
                break;
            }
        }
        if (false == userInRole) {
            throw new SecurityException("user not in allowed roles");
        }

        return invocationContext.proceed();
    }
}