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.service.http;
21  
22  import com.liferay.portal.kernel.servlet.HttpHeaders;
23  import com.liferay.portal.kernel.util.Base64;
24  import com.liferay.portal.kernel.util.MethodWrapper;
25  import com.liferay.portal.kernel.util.ObjectValuePair;
26  import com.liferay.portal.kernel.util.StringPool;
27  import com.liferay.portal.kernel.util.Validator;
28  import com.liferay.portal.security.auth.HttpPrincipal;
29  import com.liferay.portal.security.auth.PrincipalException;
30  
31  import java.io.EOFException;
32  import java.io.IOException;
33  import java.io.ObjectInputStream;
34  import java.io.ObjectOutputStream;
35  
36  import java.net.HttpURLConnection;
37  import java.net.URL;
38  
39  import javax.servlet.http.HttpServletRequest;
40  
41  /**
42   * <a href="TunnelUtil.java.html"><b><i>View Source</i></b></a>
43   *
44   * @author Brian Wing Shun Chan
45   *
46   */
47  public class TunnelUtil {
48  
49      public static Object invoke(
50              HttpPrincipal httpPrincipal, MethodWrapper methodWrapper)
51          throws Exception {
52  
53          HttpURLConnection urlc = _getConnection(httpPrincipal);
54  
55          ObjectOutputStream oos = new ObjectOutputStream(urlc.getOutputStream());
56  
57          oos.writeObject(
58              new ObjectValuePair<HttpPrincipal, MethodWrapper>(
59                  httpPrincipal, methodWrapper));
60  
61          oos.flush();
62          oos.close();
63  
64          Object returnObj = null;
65  
66          try {
67              ObjectInputStream ois = new ObjectInputStream(
68                  urlc.getInputStream());
69  
70              returnObj = ois.readObject();
71  
72              ois.close();
73          }
74          catch (EOFException eofe) {
75          }
76          catch (IOException ioe) {
77              String ioeMessage = ioe.getMessage();
78  
79              if ((ioeMessage != null) &&
80                      (ioeMessage.indexOf("HTTP response code: 401") != -1)) {
81  
82                  throw new PrincipalException(ioeMessage);
83              }
84              else {
85                  throw ioe;
86              }
87          }
88  
89          if ((returnObj != null) && returnObj instanceof Exception) {
90              throw (Exception)returnObj;
91          }
92  
93          return returnObj;
94      }
95  
96      private static HttpURLConnection _getConnection(HttpPrincipal httpPrincipal)
97          throws IOException {
98  
99          if (httpPrincipal == null || httpPrincipal.getUrl() == null) {
100             return null;
101         }
102 
103         URL url = null;
104 
105         if (Validator.isNull(httpPrincipal.getLogin()) ||
106             Validator.isNull(httpPrincipal.getPassword())) {
107 
108             url = new URL(httpPrincipal.getUrl() + "/tunnel-web/liferay/do");
109         }
110         else {
111             url = new URL(
112                 httpPrincipal.getUrl() + "/tunnel-web/secure/liferay/do");
113         }
114 
115         HttpURLConnection urlc = (HttpURLConnection)url.openConnection();
116 
117         urlc.setDoInput(true);
118         urlc.setDoOutput(true);
119         urlc.setUseCaches(false);
120 
121         urlc.setRequestMethod("POST");
122 
123         if (Validator.isNotNull(httpPrincipal.getLogin()) &&
124             Validator.isNotNull(httpPrincipal.getPassword())) {
125 
126             String userNameAndPassword =
127                 httpPrincipal.getLogin() + StringPool.COLON +
128                     httpPrincipal.getPassword();
129 
130             urlc.setRequestProperty(
131                 HttpHeaders.AUTHORIZATION,
132                 HttpServletRequest.BASIC_AUTH + StringPool.SPACE +
133                     Base64.encode(userNameAndPassword.getBytes()));
134         }
135 
136         return urlc;
137     }
138 
139 }