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/*
* Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
* Original author: Edmund Wagner
* Creation date: 22.05.2007
*
* 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 main header of an rar archive. holds information concerning the whole archive (solid, encrypted etc).
*
* @author $LastChangedBy$
* @version $LastChangedRevision$
*/
public class MainHeader extends BaseBlock {
//private Log //logger = LogFactory.getLog(MainHeader.class.getName());
public static final short mainHeaderSizeWithEnc = 7;
public static final short mainHeaderSize = 6;
private short highPosAv;
private int posAv;
private byte encryptVersion;
public MainHeader(BaseBlock bb, byte[] mainHeader) {
super(bb);
int pos = 0;
highPosAv = Raw.readShortLittleEndian(mainHeader, pos);
pos += 2;
posAv = Raw.readIntLittleEndian(mainHeader, pos);
pos+=4;
if(hasEncryptVersion()){
encryptVersion |= mainHeader[pos]&0xff;
}
}
/**
* old cmt block is present
* @return true if has cmt block
*/
public boolean hasArchCmt(){
return (this.flags & BaseBlock.MHD_COMMENT)!=0;
}
/**
* the version the the encryption
* @return
*/
public byte getEncryptVersion() {
return encryptVersion;
}
public short getHighPosAv() {
return highPosAv;
}
public int getPosAv() {
return posAv;
}
/**
* returns whether the archive is encrypted
* @return
*/
public boolean isEncrypted(){
return (this.flags & BaseBlock.MHD_PASSWORD)!=0;
}
/**
* return whether the archive is a multivolume archive
* @return
*/
public boolean isMultiVolume(){
return (this.flags & BaseBlock.MHD_VOLUME)!=0;
}
/**
* if the archive is a multivolume archive this method returns whether this instance is the first part of the multivolume archive
* @return
*/
public boolean isFirstVolume(){
return (this.flags & BaseBlock.MHD_FIRSTVOLUME)!=0;
}
public void print(){
super.print();
StringBuilder str=new StringBuilder();
str.append("posav: "+getPosAv());
str.append("\nhighposav: "+getHighPosAv());
str.append("\nhasencversion: "+hasEncryptVersion()+(hasEncryptVersion()?getEncryptVersion():""));
str.append("\nhasarchcmt: "+hasArchCmt());
str.append("\nisEncrypted: "+isEncrypted());
str.append("\nisMultivolume: "+isMultiVolume());
str.append("\nisFirstvolume: "+isFirstVolume());
str.append("\nisSolid: "+isSolid());
str.append("\nisLocked: "+isLocked());
str.append("\nisProtected: "+isProtected());
str.append("\nisAV: "+isAV());
//logger.info(str.toString());
}
/**
* returns whether this archive is solid. in this case you can only extract all file at once
* @return
*/
public boolean isSolid(){
return (this.flags&MHD_SOLID)!=0;
}
public boolean isLocked(){
return (this.flags&MHD_LOCK)!=0;
}
public boolean isProtected(){
return (this.flags&MHD_PROTECT)!=0;
}
public boolean isAV(){
return (this.flags&MHD_AV)!=0;
}
/**
* the numbering format a multivolume archive
* @return
*/
public boolean isNewNumbering(){
return (this.flags&MHD_NEWNUMBERING)!=0;
}
}
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