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Added explicit RecordFormatException when a FilePass record (indicating that the workbook is encrypted) is encountered.

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@437370 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jason Height 2006-08-27 12:00:36 +00:00
parent b5ad05cdd1
commit 5d8423bd13
6 changed files with 213 additions and 3 deletions
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6
src/java/org/apache/poi/hssf/dev/BiffViewer.java
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@ -502,6 +502,12 @@ public class BiffViewer {
case VerticalPageBreakRecord.sid:
retval = new VerticalPageBreakRecord( in);
break;
case WriteProtectRecord.sid:
retval = new WriteProtectRecord( in);
break;
case FilePassRecord.sid:
retval = new FilePassRecord(in);
break;
default:
retval = new UnknownRecord( in );
}

5
src/java/org/apache/poi/hssf/eventmodel/EventRecordFactory.java
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@ -103,6 +103,8 @@ import org.apache.poi.hssf.record.WindowOneRecord;
import org.apache.poi.hssf.record.WindowProtectRecord;
import org.apache.poi.hssf.record.WindowTwoRecord;
import org.apache.poi.hssf.record.WriteAccessRecord;
import org.apache.poi.hssf.record.WriteProtectRecord;
import org.apache.poi.hssf.record.FilePassRecord;
/**
@ -153,7 +155,8 @@ public class EventRecordFactory
BoolErrRecord.class, ExternSheetRecord.class, NameRecord.class,
LeftMarginRecord.class, RightMarginRecord.class,
TopMarginRecord.class, BottomMarginRecord.class,
PaletteRecord.class, StringRecord.class, SharedFormulaRecord.class
PaletteRecord.class, StringRecord.class, SharedFormulaRecord.class,
WriteProtectRecord.class, FilePassRecord.class
};
}

106
src/java/org/apache/poi/hssf/record/FilePassRecord.java Normal file
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@ -0,0 +1,106 @@
/* ====================================================================
Copyright 2002-2004 Apache Software Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
package org.apache.poi.hssf.record;
import org.apache.poi.util.LittleEndian;
/**
* Title: File Pass Record<P>
* Description: Indicates that the record after this record are encrypted. HSSF does not support encrypted excel workbooks
* and the presence of this record will cause processing to be aborted.<p>
* REFERENCE: PG 420 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
* @author Jason Height (jheight at chariot dot net dot au)
* @version 3.0-pre
*/
public class FilePassRecord
extends Record
{
public final static short sid = 0x2F;
private int field_1_encryptedpassword;
public FilePassRecord()
{
}
/**
* Constructs a FILEPASS record and sets its fields appropriately.
*
* @param id id must be 0x84 or an exception will be throw upon validation
* @param size the size of the data area of the record
* @param data data of the record (should not contain sid/len)
*/
public FilePassRecord(RecordInputStream in)
{
super(in);
}
protected void validateSid(short id)
{
if (id != sid)
{
throw new RecordFormatException("NOT A FILEPASS RECORD");
}
}
protected void fillFields(RecordInputStream in)
{
field_1_encryptedpassword = in.readInt();
//Whilst i have read in the password, HSSF currently has no plans to support/decrypt the remainder
//of this workbook
throw new RecordFormatException("HSSF does not currently support encrypted workbooks");
}
public String toString()
{
StringBuffer buffer = new StringBuffer();
buffer.append("[FILEPASS]\n");
buffer.append(" .password = ").append(field_1_encryptedpassword)
.append("\n");
buffer.append("[/FILEPASS]\n");
return buffer.toString();
}
public int serialize(int offset, byte [] data)
{
LittleEndian.putShort(data, 0 + offset, sid);
LittleEndian.putShort(data, 2 + offset, ( short ) 0x4);
LittleEndian.putInt(data, 4 + offset, ( short ) field_1_encryptedpassword);
return getRecordSize();
}
public int getRecordSize()
{
return 8;
}
public short getSid()
{
return sid;
}
public Object clone() {
FilePassRecord rec = new FilePassRecord();
rec.field_1_encryptedpassword = field_1_encryptedpassword;
return rec;
}
}

6
src/java/org/apache/poi/hssf/record/RecordFactory.java
View File

@ -72,7 +72,8 @@ public class RecordFactory
DrawingRecord.class, DrawingGroupRecord.class, DrawingSelectionRecord.class,
ObjRecord.class, TextObjectRecord.class,
PaletteRecord.class, StringRecord.class, RecalcIdRecord.class, SharedFormulaRecord.class,
HorizontalPageBreakRecord.class, VerticalPageBreakRecord.class
HorizontalPageBreakRecord.class, VerticalPageBreakRecord.class,
WriteProtectRecord.class, FilePassRecord.class
};
} else {
records = new Class[]
@ -106,7 +107,8 @@ public class RecordFactory
PaletteRecord.class, StringRecord.class, RecalcIdRecord.class, SharedFormulaRecord.class,
DrawingRecord.class, DrawingGroupRecord.class, DrawingSelectionRecord.class,
ObjRecord.class, TextObjectRecord.class,
HorizontalPageBreakRecord.class, VerticalPageBreakRecord.class
HorizontalPageBreakRecord.class, VerticalPageBreakRecord.class,
WriteProtectRecord.class, FilePassRecord.class
};
}

2
src/java/org/apache/poi/hssf/record/UnknownRecord.java
View File

@ -66,6 +66,8 @@ public class UnknownRecord
{
sid = in.getSid();
thedata = in.readRemainder();
//System.out.println("UnknownRecord: 0x"+Integer.toHexString(sid));
}
/**

91
src/java/org/apache/poi/hssf/record/WriteProtectRecord.java Normal file
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@ -0,0 +1,91 @@
/* ====================================================================
Copyright 2002-2004 Apache Software Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
package org.apache.poi.hssf.record;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.StringUtil;
/**
* Title: Write Protect Record<P>
* Description: Indicated that the sheet/workbook is write protected.
* REFERENCE: PG 425 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
* @version 3.0-pre
*/
public class WriteProtectRecord
extends Record
{
public final static short sid = 0x86;
public WriteProtectRecord()
{
}
/**
* Constructs a WriteAccess record and sets its fields appropriately.
*
* @param id id must be 0x5c or an exception will be throw upon validation
* @param size the size of the data area of the record
* @param data data of the record (should not contain sid/len)
*/
public WriteProtectRecord(RecordInputStream in)
{
super(in);
}
protected void validateSid(short id)
{
if (id != sid)
{
throw new RecordFormatException("NOT A WRITEPROTECT RECORD");
}
}
protected void fillFields(RecordInputStream in)
{
}
public String toString()
{
StringBuffer buffer = new StringBuffer();
buffer.append("[WRITEPROTECT]\n");
buffer.append("[/WRITEPROTECT]\n");
return buffer.toString();
}
public int serialize(int offset, byte [] data)
{
LittleEndian.putShort(data, 0 + offset, sid);
LittleEndian.putShort(data, 2 + offset, (short)0);
return getRecordSize();
}
public int getRecordSize()
{
return 4;
}
public short getSid()
{
return sid;
}
}