com.madalla.webapp.authorization.AppAuthorizationStrategy.java Source code

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Here is the source code for com.madalla.webapp.authorization.AppAuthorizationStrategy.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.madalla.webapp.authorization;

import java.util.Collection;

import org.apache.wicket.Application;
import org.apache.wicket.Component;
import org.apache.wicket.Page;
import org.apache.wicket.RestartResponseAtInterceptPageException;
import org.apache.wicket.authorization.IUnauthorizedComponentInstantiationListener;
import org.apache.wicket.authorization.UnauthorizedInstantiationException;
import org.apache.wicket.authorization.strategies.page.AbstractPageAuthorizationStrategy;

/**
 * Authorization strategy for Admin and logged in pages.
 *
 * Copied and amended SimplePageAuthorizationStrategy
 *
 * @author Eugene Malan
 *
 */
public class AppAuthorizationStrategy extends AbstractPageAuthorizationStrategy {

    Collection<PageAuthorization> pageAuthorizations;

    /**
     * Construct.
     *
     * @param signInPageClass
     *          The sign in page class
     * @param pageAuthorizations
     *          Collection of PageAuthorization that need to be authorized
     */
    public AppAuthorizationStrategy(final Class<? extends Page> signInPageClass,
            Collection<PageAuthorization> pageAuthorizations) {

        this.pageAuthorizations = pageAuthorizations;

        // Handle unauthorized access to pages
        Application.get().getSecuritySettings()
                .setUnauthorizedComponentInstantiationListener(new IUnauthorizedComponentInstantiationListener() {
                    public void onUnauthorizedInstantiation(final Component component) {
                        // If there is a sign in page class declared, and the
                        // unauthorized component is a page, but it's not the
                        // sign in page
                        if (component instanceof Page) {
                            // Redirect to page to let the user sign in
                            throw new RestartResponseAtInterceptPageException(signInPageClass);
                        } else {
                            // The component was not a page, so throw exception
                            throw new UnauthorizedInstantiationException(component.getClass());
                        }
                    }
                });
    }

    /**
     * @see org.apache.wicket.authorization.strategies.page.AbstractPageAuthorizationStrategy#isPageAuthorized(java.lang.Class)
     */
    @Override
    @SuppressWarnings("unchecked") // need to override method
    protected boolean isPageAuthorized(final Class pageClass) {
        for (PageAuthorization pageAuthorization : pageAuthorizations) {
            if (instanceOf(pageClass, (Class) pageAuthorization.getPageSuperTypeRef())) {
                if (!pageAuthorization.isAuthorized()) {
                    return false;
                }
            }
        }

        return true;

    }

}