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/*-
* Copyright (C) 2006 Erik Larsson
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
package org.catacombae.rarx;
public class MarkHeader extends RARHeader {
private static final byte[] oldRarHeader = { 0x52, 0x45, 0x7e, 0x5e };
private static final byte[] rar2Header = { 0x52, 0x61, 0x72, 0x21, 0x1a, 0x07, 0x00 };
private static final byte[] uniqueHeader = { 0x55, 0x6e, 0x69, 0x71, 0x75, 0x45, 0x21 }; // "UniquE!" in ASCII
public MarkHeader(byte[] data, int offset) {
super(data, offset);
validateData();
}
protected void validateData() {
byte[] mark = getHeaderData();
if(Util.arraysEqual(Util.createCopy(mark, 0, 4), oldRarHeader)) {
throw new InvalidDataException("An older, unsupported RAR format was detected.");
}
else {
/* original RAR v2.0 */
if(Util.arraysEqual(mark, rar2Header) ||
Util.arraysEqual(mark, uniqueHeader)) {
}
else
throw new InvalidDataException("Not a RAR file.");
}
}
}
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