1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet.taglib.security;
24  
25  import com.liferay.portal.kernel.util.HttpUtil;
26  import com.liferay.portal.kernel.util.Validator;
27  import com.liferay.portal.model.Company;
28  import com.liferay.portal.model.Group;
29  import com.liferay.portal.model.GroupConstants;
30  import com.liferay.portal.model.Layout;
31  import com.liferay.portal.service.GroupLocalServiceUtil;
32  import com.liferay.portal.theme.ThemeDisplay;
33  import com.liferay.portal.util.WebKeys;
34  import com.liferay.util.Encryptor;
35  
36  import javax.servlet.http.HttpServletRequest;
37  import javax.servlet.jsp.JspException;
38  import javax.servlet.jsp.PageContext;
39  import javax.servlet.jsp.tagext.TagSupport;
40  
41  /**
42   * <a href="DoAsURLTagUtil.java.html"><b><i>View Source</i></b></a>
43   *
44   * @author Brian Wing Shun Chan
45   *
46   */
47  public class DoAsURLTagUtil extends TagSupport {
48  
49      public static String doEndTag(
50              long doAsUserId, String var, boolean writeOutput,
51              PageContext pageContext)
52          throws JspException {
53  
54          try {
55              HttpServletRequest request =
56                  (HttpServletRequest)pageContext.getRequest();
57  
58              ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
59                  WebKeys.THEME_DISPLAY);
60  
61              Company company = themeDisplay.getCompany();
62              Layout layout = themeDisplay.getLayout();
63  
64              Group guestGroup = GroupLocalServiceUtil.getGroup(
65                  company.getCompanyId(), GroupConstants.GUEST);
66  
67              String doAsURL =
68                  guestGroup.getPathFriendlyURL(false, themeDisplay) +
69                      guestGroup.getFriendlyURL();
70  
71              if (doAsUserId <= 0) {
72                  doAsUserId = company.getDefaultUser().getUserId();
73              }
74  
75              String encDoAsUserId = Encryptor.encrypt(
76                  company.getKeyObj(), String.valueOf(doAsUserId));
77  
78              doAsURL = HttpUtil.addParameter(
79                  doAsURL, "doAsUserId", encDoAsUserId);
80  
81              if (Validator.isNotNull(var)) {
82                  pageContext.setAttribute(var, doAsURL);
83              }
84              else if (writeOutput) {
85                  pageContext.getOut().print(doAsURL);
86              }
87  
88              return doAsURL;
89          }
90          catch (Exception e) {
91              throw new JspException(e);
92          }
93      }
94  
95  }