001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.servlet;
016    
017    import com.liferay.portal.exception.NoSuchLayoutException;
018    import com.liferay.portal.kernel.log.Log;
019    import com.liferay.portal.kernel.log.LogFactoryUtil;
020    import com.liferay.portal.kernel.servlet.PortalWebResourceConstants;
021    import com.liferay.portal.kernel.servlet.PortalWebResourcesUtil;
022    import com.liferay.portal.kernel.servlet.ServletResponseUtil;
023    import com.liferay.portal.kernel.util.ContentTypes;
024    import com.liferay.portal.kernel.util.GetterUtil;
025    import com.liferay.portal.kernel.util.StringBundler;
026    import com.liferay.portal.kernel.util.Validator;
027    import com.liferay.portal.kernel.util.WebKeys;
028    import com.liferay.portal.model.Portlet;
029    import com.liferay.portal.service.PortletLocalServiceUtil;
030    import com.liferay.portal.util.Portal;
031    import com.liferay.portal.util.PortalUtil;
032    import com.liferay.portal.util.PropsValues;
033    
034    import java.io.IOException;
035    
036    import javax.servlet.ServletException;
037    import javax.servlet.http.HttpServlet;
038    import javax.servlet.http.HttpServletRequest;
039    import javax.servlet.http.HttpServletResponse;
040    
041    /**
042     * @author Alberto Montero
043     */
044    public class GoogleGadgetServlet extends HttpServlet {
045    
046            @Override
047            public void service(
048                            HttpServletRequest request, HttpServletResponse response)
049                    throws IOException, ServletException {
050    
051                    try {
052                            String content = getContent(request);
053    
054                            if (content == null) {
055                                    PortalUtil.sendError(
056                                            HttpServletResponse.SC_NOT_FOUND,
057                                            new NoSuchLayoutException(), request, response);
058                            }
059                            else {
060                                    request.setAttribute(WebKeys.GOOGLE_GADGET, Boolean.TRUE);
061    
062                                    response.setContentType(ContentTypes.TEXT_XML);
063    
064                                    ServletResponseUtil.write(response, content);
065                            }
066                    }
067                    catch (Exception e) {
068                            _log.error(e, e);
069    
070                            PortalUtil.sendError(
071                                    HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
072                                    response);
073                    }
074            }
075    
076            protected String getContent(HttpServletRequest request) throws Exception {
077                    String path = GetterUtil.getString(request.getPathInfo());
078    
079                    if (Validator.isNull(path)) {
080                            return null;
081                    }
082    
083                    int pos = path.indexOf(Portal.FRIENDLY_URL_SEPARATOR);
084    
085                    if (pos == -1) {
086                            return null;
087                    }
088    
089                    long companyId = PortalUtil.getCompanyId(request);
090    
091                    String portletId = path.substring(
092                            pos + Portal.FRIENDLY_URL_SEPARATOR.length());
093    
094                    Portlet portlet = PortletLocalServiceUtil.getPortletById(
095                            companyId, portletId);
096    
097                    String title = portlet.getDisplayName();
098    
099                    String portalURL = PortalUtil.getPortalURL(request);
100    
101                    String widgetJsURL = portalURL;
102    
103                    widgetJsURL += PortalWebResourcesUtil.getContextPath(
104                            PortalWebResourceConstants.RESOURCE_TYPE_JS);
105                    widgetJsURL += "/liferay/widget.js";
106    
107                    String widgetURL = String.valueOf(request.getRequestURL());
108    
109                    widgetURL = widgetURL.replaceFirst(
110                            PropsValues.GOOGLE_GADGET_SERVLET_MAPPING,
111                            PropsValues.WIDGET_SERVLET_MAPPING);
112    
113                    StringBundler sb = new StringBundler(19);
114    
115                    sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
116                    sb.append("<Module>");
117                    sb.append("<ModulePrefs title=\"");
118                    sb.append(title);
119                    sb.append("\"/>");
120                    sb.append("<Content type=\"html\">");
121                    sb.append("<![CDATA[");
122                    sb.append("<script src=\"");
123                    sb.append(widgetJsURL);
124                    sb.append("\" ");
125                    sb.append("type=\"text/javascript\"></script>");
126                    sb.append("<script type=\"text/javascript\">");
127                    sb.append("window.Liferay.Widget({url:'");
128                    sb.append(widgetURL);
129                    sb.append("'});");
130                    sb.append("</script>");
131                    sb.append("]]>");
132                    sb.append("</Content>");
133                    sb.append("</Module>");
134    
135                    return sb.toString();
136            }
137    
138            private static final Log _log = LogFactoryUtil.getLog(
139                    GoogleGadgetServlet.class);
140    
141    }