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/*
* Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
* Original author: Edmund Wagner
* Creation date: 24.05.2007
*
* Source: $HeadURL$
* Last changed: $LastChangedDate$
*
*
* the unrar licence applies to all junrar source and binary distributions
* you are not allowed to use this source to re-create the RAR compression algorithm
*
* Here some html entities which can be used for escaping javadoc tags:
* "&": "&" or "&"
* "<": "<" or "<"
* ">": ">" or ">"
* "@": "@"
*/
package com.github.junrar.rarfile;
import com.github.junrar.io.Raw;
/**
* the header to recognize a file to be a rar archive
*
* @author $LastChangedBy$
* @version $LastChangedRevision$
*/
public class MarkHeader extends BaseBlock {
//private Log //logger = LogFactory.getLog(MarkHeader.class.getName());
private boolean oldFormat = false;
public MarkHeader(BaseBlock bb){
super(bb);
}
public boolean isValid(){
if(!(getHeadCRC() == 0x6152)){
return false;
}
if(!(getHeaderType() == UnrarHeadertype.MarkHeader)){
return false;
}
if(!(getFlags() == 0x1a21)){
return false;
}
if(!(getHeaderSize() == BaseBlockSize)){
return false;
}
return true;
}
public boolean isSignature() {
boolean valid=false;
byte[] d = new byte[BaseBlock.BaseBlockSize];
Raw.writeShortLittleEndian(d, 0, headCRC);
d[2] = headerType;
Raw.writeShortLittleEndian(d, 3, flags);
Raw.writeShortLittleEndian(d, 5, headerSize);
if (d[0] == 0x52) {
if (d[1]==0x45 && d[2]==0x7e && d[3]==0x5e) {
oldFormat=true;
valid=true;
}
else if (d[1]==0x61 && d[2]==0x72 && d[3]==0x21 && d[4]==0x1a &&
d[5]==0x07 && d[6]==0x00) {
oldFormat=false;
valid=true;
}
}
return valid;
}
public boolean isOldFormat() {
return oldFormat;
}
public void print(){
super.print();
//logger.info("valid: "+isValid());
}
}
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