1 2 /* ==================================================================== 3 * The Apache Software License, Version 1.1 4 * 5 * Copyright (c) 2002 The Apache Software Foundation. All rights 6 * reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 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 18 * distribution. 19 * 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. 26 * 27 * 4. The names "Apache" and "Apache Software Foundation" and 28 * "Apache POI" must not be used to endorse or promote products 29 * derived from this software without prior written permission. For 30 * written permission, please contact apache@apache.org. 31 * 32 * 5. Products derived from this software may not be called "Apache", 33 * "Apache POI", nor may "Apache" appear in their name, without 34 * prior written permission of the Apache Software Foundation. 35 * 36 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 37 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 38 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 39 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 43 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 44 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 45 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 47 * SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This software consists of voluntary contributions made by many 51 * individuals on behalf of the Apache Software Foundation. For more 52 * information on the Apache Software Foundation, please see 53 * <http://www.apache.org/>. 54 */ 55 56 package org.apache.poi.hssf.record; 57 58 import org.apache.poi.util.LittleEndian; 59 60 /** 61 * Title: Protection Revision 4 password Record<P> 62 * Description: Stores the (2 byte??!!) encrypted password for a shared 63 * workbook<P> 64 * REFERENCE: PG 374 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P> 65 * @author Andrew C. Oliver (acoliver at apache dot org) 66 * @version 2.0-pre 67 */ 68 69 public class PasswordRev4Record 70 extends Record 71 { 72 public final static short sid = 0x1BC; 73 private short field_1_password; 74 75 public PasswordRev4Record() 76 { 77 } 78 79 /** 80 * Constructs a PasswordRev4 (PROT4REVPASS) record and sets its fields appropriately. 81 * 82 * @param id id must be 0x1bc or an exception will be throw upon validation 83 * @param size the size of the data area of the record 84 * @param data data of the record (should not contain sid/len) 85 */ 86 87 public PasswordRev4Record(short id, short size, byte [] data) 88 { 89 super(id, size, data); 90 } 91 92 /** 93 * Constructs a PasswordRev4 (PROT4REVPASS) record and sets its fields appropriately. 94 * 95 * @param id id must be 0x1bc or an exception will be throw upon validation 96 * @param size the size of the data area of the record 97 * @param data data of the record (should not contain sid/len) 98 * @param offset of the data 99 */ 100 101 public PasswordRev4Record(short id, short size, byte [] data, int offset) 102 { 103 super(id, size, data, offset); 104 } 105 106 protected void validateSid(short id) 107 { 108 if (id != sid) 109 { 110 throw new RecordFormatException("NOT A PROT4REVPASSWORD RECORD"); 111 } 112 } 113 114 protected void fillFields(byte [] data, short size, int offset) 115 { 116 field_1_password = LittleEndian.getShort(data, 0 + offset); 117 } 118 119 /** 120 * set the password 121 * 122 * @param pw representing the password 123 */ 124 125 public void setPassword(short pw) 126 { 127 field_1_password = pw; 128 } 129 130 /** 131 * get the password 132 * 133 * @return short representing the password 134 */ 135 136 public short getPassword() 137 { 138 return field_1_password; 139 } 140 141 public String toString() 142 { 143 StringBuffer buffer = new StringBuffer(); 144 145 buffer.append("[PROT4REVPASSWORD]\n"); 146 buffer.append(" .password = ") 147 .append(Integer.toHexString(getPassword())).append("\n"); 148 buffer.append("[/PROT4REVPASSWORD]\n"); 149 return buffer.toString(); 150 } 151 152 public int serialize(int offset, byte [] data) 153 { 154 LittleEndian.putShort(data, 0 + offset, sid); 155 LittleEndian.putShort(data, 2 + offset, 156 (( short ) 0x02)); // 2 bytes (6 total) 157 LittleEndian.putShort(data, 4 + offset, getPassword()); 158 return getRecordSize(); 159 } 160 161 public int getRecordSize() 162 { 163 return 6; 164 } 165 166 public short getSid() 167 { 168 return this.sid; 169 } 170 } 171