KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > samples > security > LogHandler


1 /*
2  * Copyright 2001-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package samples.security;
18
19 import org.apache.axis.AxisFault;
20 import org.apache.axis.Handler;
21 import org.apache.axis.Message;
22 import org.apache.axis.MessageContext;
23 import org.apache.axis.components.logger.LogFactory;
24 import org.apache.axis.handlers.BasicHandler;
25 import org.apache.axis.utils.Messages;
26 import org.apache.commons.logging.Log;
27 import org.apache.xml.security.signature.XMLSignature;
28 import org.apache.xml.security.utils.Constants;
29 import org.apache.xpath.CachedXPathAPI;
30 import org.w3c.dom.Document JavaDoc;
31 import org.w3c.dom.Element JavaDoc;
32
33 import java.io.FileWriter JavaDoc;
34 import java.io.PrintWriter JavaDoc;
35
36 public class LogHandler extends BasicHandler {
37     static Log log =
38         LogFactory.getLog(LogHandler.class.getName());
39
40     static {
41         org.apache.xml.security.Init.init();
42     }
43
44     public void invoke(MessageContext msgContext) throws AxisFault {
45         try {
46             System.out.println("Starting Server verification");
47
48             Message inMsg = msgContext.getRequestMessage();
49             Message outMsg = msgContext.getResponseMessage();
50
51             // verify signed message
52
53             Document JavaDoc doc = inMsg.getSOAPEnvelope().getAsDocument();
54             String JavaDoc BaseURI = "http://xml-security";
55             CachedXPathAPI xpathAPI = new CachedXPathAPI();
56
57             Element JavaDoc nsctx = doc.createElement("nsctx");
58             nsctx.setAttribute("xmlns:ds", Constants.SignatureSpecNS);
59
60             Element JavaDoc signatureElem = (Element JavaDoc) xpathAPI.selectSingleNode(doc,
61                     "//ds:Signature", nsctx);
62
63             // check to make sure that the document claims to have been signed
64 if (signatureElem == null) {
65                 System.out.println("The document is not signed");
66                 return;
67             }
68
69             XMLSignature sig = new XMLSignature(signatureElem, BaseURI);
70
71             boolean verify = sig.checkSignatureValue(sig.getKeyInfo().getPublicKey());
72             System.out.println("Server verification complete.");
73
74             System.out.println("The signature is" + (verify
75                     ? " "
76                     : " not ") + "valid");
77         } catch (Exception JavaDoc e) {
78             throw AxisFault.makeFault(e);
79         }
80
81     }
82
83     public void onFault(MessageContext msgContext) {
84         try {
85             Handler serviceHandler = msgContext.getService();
86             String JavaDoc filename = (String JavaDoc) getOption("filename");
87             if ((filename == null) || (filename.equals("")))
88                 throw new AxisFault("Server.NoLogFile",
89                         "No log file configured for the LogHandler!",
90                         null, null);
91             FileWriter JavaDoc fw = new FileWriter JavaDoc(filename, true);
92             PrintWriter JavaDoc pw = new PrintWriter JavaDoc(fw);
93             pw.println("=====================");
94             pw.println("= " + Messages.getMessage("fault00"));
95             pw.println("=====================");
96             pw.close();
97         } catch (Exception JavaDoc e) {
98             log.error(e);
99         }
100     }
101 }
102
Popular Tags