001    /* Copyright  (c) 2002 Graz University of Technology. All rights reserved.
002     *
003     * Redistribution and use in  source and binary forms, with or without 
004     * modification, are permitted  provided that the following conditions are met:
005     *
006     * 1. Redistributions of  source code must retain the above copyright notice,
007     *    this list of conditions and the following disclaimer.
008     *
009     * 2. Redistributions in  binary form must reproduce the above copyright notice,
010     *    this list of conditions and the following disclaimer in the documentation
011     *    and/or other materials provided with the distribution.
012     *  
013     * 3. The end-user documentation included with the redistribution, if any, must
014     *    include the following acknowledgment:
015     * 
016     *    "This product includes software developed by IAIK of Graz University of
017     *     Technology."
018     * 
019     *    Alternately, this acknowledgment may appear in the software itself, if 
020     *    and wherever such third-party acknowledgments normally appear.
021     *  
022     * 4. The names "Graz University of Technology" and "IAIK of Graz University of
023     *    Technology" must not be used to endorse or promote products derived from 
024     *    this software without prior written permission.
025     *  
026     * 5. Products derived from this software may not be called 
027     *    "IAIK PKCS Wrapper", nor may "IAIK" appear in their name, without prior 
028     *    written permission of Graz University of Technology.
029     *  
030     *  THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
031     *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
032     *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
033     *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE
034     *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
035     *  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
036     *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
037     *  OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
038     *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
039     *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
040     *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
041     *  POSSIBILITY  OF SUCH DAMAGE.
042     */
043    
044    package demo.pkcs.pkcs11;
045    
046    import java.io.BufferedReader;
047    import java.io.FileOutputStream;
048    import java.io.InputStreamReader;
049    import java.io.OutputStream;
050    import java.io.PrintWriter;
051    
052    import iaik.pkcs.pkcs11.Module;
053    import iaik.pkcs.pkcs11.Session;
054    import iaik.pkcs.pkcs11.Token;
055    import iaik.pkcs.pkcs11.TokenInfo;
056    import iaik.pkcs.pkcs11.objects.Data;
057    import iaik.pkcs.pkcs11.objects.Object;
058    
059    
060    
061    /**
062     * This demo program read a data object with a specific label from the token.
063     *
064     * @author <a href="mailto:Karl.Scheibelhofer@iaik.at"> Karl Scheibelhofer </a>
065     * @version 0.1
066     * @invariants
067     */
068    public class ReadDataObject {
069    
070      static PrintWriter output_;
071    
072      static BufferedReader input_;
073    
074      static {
075        try {
076          //output_ = new PrintWriter(new FileWriter("GetInfo_output.txt"), true);
077          output_ = new PrintWriter(System.out, true);
078          input_ = new BufferedReader(new InputStreamReader(System.in));
079        } catch (Throwable thr) {
080          thr.printStackTrace();
081          output_ = new PrintWriter(System.out, true);
082          input_ = new BufferedReader(new InputStreamReader(System.in));
083        }
084      }
085    
086      public static void main(String[] args) {
087        if (args.length != 3) {
088          printUsage();
089          System.exit(1);
090        }
091    
092        try {
093          Module pkcs11Module = Module.getInstance(args[0]);
094          pkcs11Module.initialize(null);
095    
096          Token token = Util.selectToken(pkcs11Module, output_, input_);
097          if (token == null) {
098            output_.println("We have no token to proceed. Finished.");
099            output_.flush();
100            System.exit(0);
101          }
102          TokenInfo tokenInfo = token.getTokenInfo();
103    
104          output_.println("################################################################################");
105          output_.println("Information of Token:");
106          output_.println(tokenInfo);
107          output_.println("################################################################################");
108    
109          // open an read-write user session
110          Session session = Util.openAuthorizedSession(token, Token.SessionReadWriteBehavior.RW_SESSION, output_, input_);
111    
112          output_.println("################################################################################");
113          output_.println("searching for data object on the card using this search template... ");
114          output_.flush();
115    
116          // create certificate object template
117          Data dataObjectTemplate = new Data();
118          
119          // we could also set the name that manages this data object
120          //dataObjectTemplate.getApplication().setCharArrayValue("Application Name");
121          
122          // set the data object's label
123          dataObjectTemplate.getLabel().setCharArrayValue(args[1].toCharArray());
124    
125          // print template
126          output_.println(dataObjectTemplate);
127          
128          // start find operation
129          session.findObjectsInit(dataObjectTemplate);
130    
131          Object[] foundDataObjects = session.findObjects(1); // find first
132    
133          Data dataObject;
134          if (foundDataObjects.length > 0) {
135            dataObject = (Data) foundDataObjects[0];
136            output_.println("________________________________________________________________________________");
137            output_.print("found this data object with handle: ");
138            output_.println(dataObject.getObjectHandle());
139            output_.println(dataObject);
140            output_.println("________________________________________________________________________________");
141            // FIXME, there may be more than one that matches the given template, the label is not unique in general
142            // foundDataObjects = session.findObjects(1); //find next
143          } else {
144            dataObject = null;
145          }
146          
147          session.findObjectsFinal();
148    
149          output_.println("################################################################################");
150    
151          output_.println("################################################################################");
152          output_.println("Writing content data (value attribute) to: " + args[2]);
153          
154          OutputStream dataOutputStream = new FileOutputStream(args[2]);
155          
156          byte[] data = dataObject.getValue().getByteArrayValue();
157          if (data != null) {
158            dataOutputStream.write(data);
159          } 
160          dataOutputStream.flush();
161          dataOutputStream.close();       
162           
163          output_.println("################################################################################");
164    
165          session.closeSession();
166          pkcs11Module.finalize(null);
167    
168        } catch (Throwable ex) {
169          ex.printStackTrace();
170        }
171      }
172    
173      protected static void printUsage() {
174        output_.println("ReadDataObject <PKCS#11 module name> <data object label> <output file>");
175        output_.println("e.g.: ReadDataObject gclib.dll \"Student Data\" data.dat");
176      }
177    
178    }