001    /**
002     * Copyright 2005-2014 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.rice.edl.impl.components;
017    
018    import org.apache.commons.lang.StringUtils;
019    import org.apache.commons.logging.Log;
020    import org.apache.commons.logging.LogFactory;
021    import org.kuali.rice.edl.impl.EDLContext;
022    import org.kuali.rice.edl.impl.EDLModelComponent;
023    import org.kuali.rice.edl.impl.EDLXmlUtils;
024    import org.kuali.rice.edl.impl.RequestParser;
025    import org.w3c.dom.Document;
026    import org.w3c.dom.Element;
027    
028    /**
029     * Handles setting the request browser type in the EDL XML.
030     *
031     * @author Kuali Rice Team (kuali-rice@googlegroups.com)
032     *
033     */
034    public class BrowserHandler implements EDLModelComponent {
035    
036            private static final Log LOG = LogFactory.getLog(BrowserHandler.class);
037            
038            public static final String BROWSER_EL = "requestBrowser";
039            
040            public void updateDOM(Document dom, Element configElement, EDLContext edlContext) {
041                String userAgent = browserString(edlContext.getRequestParser());
042                setBrowser(dom, uaConvert(userAgent));
043            }
044            
045            /**
046             * get user-agent header
047             */
048            private String browserString(RequestParser requestParser) {
049                return requestParser.getRequest().getHeader("User-Agent");
050            }
051    
052            private void setBrowser(Document dom, String bStr) {
053                if (!StringUtils.isBlank(bStr)) {
054                    Element currentPageElement = EDLXmlUtils.getOrCreateChildElement(dom.getDocumentElement(), BROWSER_EL, true);
055                    currentPageElement.appendChild(dom.createTextNode(bStr));
056                    if (LOG.isDebugEnabled()) {
057                            LOG.debug("Appended" + bStr + " to XML field " + currentPageElement.getNodeName());
058                    }
059                }
060            }
061            
062            private String uaConvert(String userAgent){
063                String res = userAgent;
064                int ie = userAgent.indexOf("MSIE");
065                int ff = userAgent.indexOf("Firefox/");
066                int saf = userAgent.indexOf("Safari/");
067                int chr = userAgent.indexOf("Chrome/");
068                if(ie>0){
069                    res = "InternetExplorer";
070                }else if(ff > 0){
071                    res = "Firefox";
072                }else if(saf > 0 && chr < 0){
073                    res = "Safari";
074                }else if(saf > 0 && chr > 0){
075                res = "Chrome";
076                }else{
077                    res = "Other";
078                }       
079                return res;
080            }
081            
082    
083                
084    
085    }