fr.mby.portal.coreimpl.app.BasicAppSigner.java Source code

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Here is the source code for fr.mby.portal.coreimpl.app.BasicAppSigner.java

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/**
 * Copyright 2013 Maxime Bossard
 *
 * 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 fr.mby.portal.coreimpl.app;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import fr.mby.portal.api.IPortal;
import fr.mby.portal.api.app.IApp;
import fr.mby.portal.core.app.IAppSigner;
import fr.mby.portal.core.session.ISessionManager;

/**
 * Generate the App signature and is able to retrieve it from HTTP request within param or cookie.
 * 
 * @author Maxime Bossard - 2013
 * 
 */
@Service
public class BasicAppSigner implements IAppSigner {

    @Autowired
    private ISessionManager sessionManager;

    @Override
    public String generateSignature(final HttpServletRequest request, final IApp app) {
        String signature = app.getSignature();

        if (!StringUtils.hasText(signature)) {
            signature = this.generate(request, app);
        }

        return signature;
    }

    @Override
    public String retrieveSignature(final HttpServletRequest request) {
        String signature = null;

        final Object attrObject = request.getAttribute(IPortal.SIGNATURE_PARAM_NAME);
        if (attrObject != null && attrObject instanceof String) {
            signature = (String) attrObject;
        }

        if (!StringUtils.hasText(signature)) {
            signature = request.getParameter(IPortal.SIGNATURE_PARAM_NAME);
        }

        if (!StringUtils.hasText(signature)) {
            final Cookie[] cookies = request.getCookies();
            if (cookies != null) {
                for (final Cookie cookie : cookies) {
                    if (cookie != null && IPortal.SIGNATURE_PARAM_NAME.equals(cookie.getName())) {
                        signature = cookie.getValue();
                    }
                }
            }
        }

        if (!StringUtils.hasText(signature)) {
            request.setAttribute(IPortal.SIGNATURE_PARAM_NAME, signature);
        }

        return signature;
    }

    /**
     * @param request
     * @param appConfig
     * @return
     */
    protected String generate(final HttpServletRequest request, final IApp app) {

        return "signature_" + app.hashCode() + "_" + System.currentTimeMillis() + "_"
                + this.sessionManager.getPortalSessionId(request);
    }

}