1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.servlet.taglib.security;
21  
22  import com.liferay.portal.kernel.util.HttpUtil;
23  import com.liferay.portal.kernel.util.Validator;
24  import com.liferay.portal.model.Company;
25  import com.liferay.portal.model.Layout;
26  import com.liferay.portal.theme.ThemeDisplay;
27  import com.liferay.portal.util.PortalUtil;
28  import com.liferay.portal.util.WebKeys;
29  import com.liferay.util.Encryptor;
30  
31  import javax.servlet.http.HttpServletRequest;
32  import javax.servlet.jsp.JspException;
33  import javax.servlet.jsp.PageContext;
34  import javax.servlet.jsp.tagext.TagSupport;
35  
36  /**
37   * <a href="DoAsURLTagUtil.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   *
41   */
42  public class DoAsURLTagUtil extends TagSupport {
43  
44      public static String doEndTag(
45              long doAsUserId, String var, boolean writeOutput,
46              PageContext pageContext)
47          throws JspException {
48  
49          try {
50              HttpServletRequest request =
51                  (HttpServletRequest)pageContext.getRequest();
52  
53              ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
54                  WebKeys.THEME_DISPLAY);
55  
56              Company company = themeDisplay.getCompany();
57              Layout layout = themeDisplay.getLayout();
58  
59              String doAsURL = PortalUtil.getLayoutURL(
60                  layout, themeDisplay, false);
61  
62              if (doAsUserId <= 0) {
63                  doAsUserId = company.getDefaultUser().getUserId();
64              }
65  
66              String encDoAsUserId = Encryptor.encrypt(
67                  company.getKeyObj(), String.valueOf(doAsUserId));
68  
69              doAsURL = HttpUtil.addParameter(
70                  doAsURL, "doAsUserId", encDoAsUserId);
71  
72              if (Validator.isNotNull(var)) {
73                  pageContext.setAttribute(var, doAsURL);
74              }
75              else if (writeOutput) {
76                  pageContext.getOut().print(doAsURL);
77              }
78  
79              return doAsURL;
80          }
81          catch (Exception e) {
82              throw new JspException(e);
83          }
84      }
85  
86  }