1    
2    /* ====================================================================
3     * The Apache Software License, Version 1.1
4     *
5     * Copyright (c) 2002 The Apache Software Foundation.  All rights
6     * reserved.
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8     * Redistribution and use in source and binary forms, with or without
9     * modification, are permitted provided that the following conditions
10    * are met:
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12    * 1. Redistributions of source code must retain the above copyright
13    *    notice, this list of conditions and the following disclaimer.
14    *
15    * 2. Redistributions in binary form must reproduce the above copyright
16    *    notice, this list of conditions and the following disclaimer in
17    *    the documentation and/or other materials provided with the
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20    * 3. The end-user documentation included with the redistribution,
21    *    if any, must include the following acknowledgment:
22    *       "This product includes software developed by the
23    *        Apache Software Foundation (http://www.apache.org/)."
24    *    Alternately, this acknowledgment may appear in the software itself,
25    *    if and wherever such third-party acknowledgments normally appear.
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27    * 4. The names "Apache" and "Apache Software Foundation" and
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32    * 5. Products derived from this software may not be called "Apache",
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50    * This software consists of voluntary contributions made by many
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54    */
55   
56   package org.apache.poi.hssf.record;
57   
58   import org.apache.poi.util.LittleEndian;
59   
60   /**
61    * Title:        Password Record<P>
62    * Description:  stores the encrypted password for a sheet or workbook (HSSF doesn't support encryption)
63    * REFERENCE:  PG 371 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
64    * @author Andrew C. Oliver (acoliver at apache dot org)
65    * @version 2.0-pre
66    */
67   
68   public class PasswordRecord
69       extends Record
70   {
71       public final static short sid = 0x13;
72       private short             field_1_password;   // not sure why this is only 2 bytes, but it is... go figure
73   
74       public PasswordRecord()
75       {
76       }
77   
78       /**
79        * Constructs a Password record and sets its fields appropriately.
80        *
81        * @param id     id must be 0x13 or an exception will be throw upon validation
82        * @param size  the size of the data area of the record
83        * @param data  data of the record (should not contain sid/len)
84        */
85   
86       public PasswordRecord(short id, short size, byte [] data)
87       {
88           super(id, size, data);
89       }
90   
91       /**
92        * Constructs a Password record and sets its fields appropriately.
93        *
94        * @param id     id must be 0x13 or an exception will be throw upon validation
95        * @param size  the size of the data area of the record
96        * @param data  data of the record (should not contain sid/len)
97        * @param offset of the data
98        */
99   
100      public PasswordRecord(short id, short size, byte [] data, int offset)
101      {
102          super(id, size, data, offset);
103      }
104  
105      protected void validateSid(short id)
106      {
107          if (id != sid)
108          {
109              throw new RecordFormatException("NOT A PASSWORD RECORD");
110          }
111      }
112  
113      protected void fillFields(byte [] data, short size, int offset)
114      {
115          field_1_password = LittleEndian.getShort(data, 0 + offset);
116      }
117  
118      /**
119       * set the password
120       *
121       * @param password  representing the password
122       */
123  
124      public void setPassword(short password)
125      {
126          field_1_password = password;
127      }
128  
129      /**
130       * get the password
131       *
132       * @return short  representing the password
133       */
134  
135      public short getPassword()
136      {
137          return field_1_password;
138      }
139  
140      public String toString()
141      {
142          StringBuffer buffer = new StringBuffer();
143  
144          buffer.append("[PASSWORD]\n");
145          buffer.append("    .password       = ")
146              .append(Integer.toHexString(getPassword())).append("\n");
147          buffer.append("[/PASSWORD]\n");
148          return buffer.toString();
149      }
150  
151      public int serialize(int offset, byte [] data)
152      {
153          LittleEndian.putShort(data, 0 + offset, sid);
154          LittleEndian.putShort(data, 2 + offset,
155                                (( short ) 0x02));   // 2 bytes (6 total)
156          LittleEndian.putShort(data, 4 + offset, getPassword());
157          return getRecordSize();
158      }
159  
160      public int getRecordSize()
161      {
162          return 6;
163      }
164  
165      public short getSid()
166      {
167          return this.sid;
168      }
169  }
170