001: /* ====================================================================
002: Licensed to the Apache Software Foundation (ASF) under one or more
003: contributor license agreements. See the NOTICE file distributed with
004: this work for additional information regarding copyright ownership.
005: The ASF licenses this file to You under the Apache License, Version 2.0
006: (the "License"); you may not use this file except in compliance with
007: the License. You may obtain a copy of the License at
008:
009: http://www.apache.org/licenses/LICENSE-2.0
010:
011: Unless required by applicable law or agreed to in writing, software
012: distributed under the License is distributed on an "AS IS" BASIS,
013: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014: See the License for the specific language governing permissions and
015: limitations under the License.
016: ==================================================================== */
017:
018: package org.apache.poi.hssf.record;
019:
020: import org.apache.poi.util.LittleEndian;
021:
022: /**
023: * Title: Protection Revision 4 password Record<P>
024: * Description: Stores the (2 byte??!!) encrypted password for a shared
025: * workbook<P>
026: * REFERENCE: PG 374 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
027: * @author Andrew C. Oliver (acoliver at apache dot org)
028: * @version 2.0-pre
029: */
030:
031: public class PasswordRev4Record extends Record {
032: public final static short sid = 0x1BC;
033: private short field_1_password;
034:
035: public PasswordRev4Record() {
036: }
037:
038: /**
039: * Constructs a PasswordRev4 (PROT4REVPASS) record and sets its fields appropriately.
040: * @param in the RecordInputstream to read the record from
041: */
042:
043: public PasswordRev4Record(RecordInputStream in) {
044: super (in);
045: }
046:
047: protected void validateSid(short id) {
048: if (id != sid) {
049: throw new RecordFormatException(
050: "NOT A PROT4REVPASSWORD RECORD");
051: }
052: }
053:
054: protected void fillFields(RecordInputStream in) {
055: field_1_password = in.readShort();
056: }
057:
058: /**
059: * set the password
060: *
061: * @param pw representing the password
062: */
063:
064: public void setPassword(short pw) {
065: field_1_password = pw;
066: }
067:
068: /**
069: * get the password
070: *
071: * @return short representing the password
072: */
073:
074: public short getPassword() {
075: return field_1_password;
076: }
077:
078: public String toString() {
079: StringBuffer buffer = new StringBuffer();
080:
081: buffer.append("[PROT4REVPASSWORD]\n");
082: buffer.append(" .password = ").append(
083: Integer.toHexString(getPassword())).append("\n");
084: buffer.append("[/PROT4REVPASSWORD]\n");
085: return buffer.toString();
086: }
087:
088: public int serialize(int offset, byte[] data) {
089: LittleEndian.putShort(data, 0 + offset, sid);
090: LittleEndian.putShort(data, 2 + offset, ((short) 0x02)); // 2 bytes (6 total)
091: LittleEndian.putShort(data, 4 + offset, getPassword());
092: return getRecordSize();
093: }
094:
095: public int getRecordSize() {
096: return 6;
097: }
098:
099: public short getSid() {
100: return sid;
101: }
102: }
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