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A library to read PST files with java, without need for external libraries.
There is a newer version: 0.9.3
/**
 * Copyright 2010 Richard Johnson & Orin Eman
 *
 * 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.
 *
 * ---
 *
 * This file is part of java-libpst.
 *
 * java-libpst is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * java-libpst 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with java-libpst.  If not, see .
 *
 */
package com.pff;

import java.io.*;
import java.util.*;


/**
 * Object that represents the message store.
 * Not much use other than to get the "name" of the PST file.
 * @author Richard Johnson
 */
public class PSTMessageStore extends PSTObject {
	
	PSTMessageStore(PSTFile theFile, DescriptorIndexNode descriptorIndexNode)
		throws PSTException, IOException
	{
		super(theFile, descriptorIndexNode);
	}
	
	/**
	 * Get the tag record key, unique to this pst
	 */
	public UUID getTagRecordKeyAsUUID() {
		// attempt to find in the table.
		int guidEntryType = 0x0ff9;
		if (this.items.containsKey(guidEntryType)) {
			PSTTableBCItem item = this.items.get(guidEntryType);
			int offset = 0;
			byte[] bytes = item.data;
			long mostSigBits = (PSTObject.convertLittleEndianBytesToLong(bytes, offset, offset+4) << 32) |
								(PSTObject.convertLittleEndianBytesToLong(bytes, offset+4, offset+6) << 16) |
								PSTObject.convertLittleEndianBytesToLong(bytes, offset+6, offset+8);
			long leastSigBits = PSTObject.convertBigEndianBytesToLong(bytes, offset+8, offset+16);
			return new UUID(mostSigBits, leastSigBits);
		}
		return null;
	}
	
	/**
	 * get the message store display name
	 */
	public String getDisplayName() {
		// attempt to find in the table.
		int displayNameEntryType = 0x3001;
		if (this.items.containsKey(displayNameEntryType)) {
			return this.getStringItem(displayNameEntryType);
			//PSTTableBCItem item = (PSTTableBCItem)this.items.get(displayNameEntryType);
			//return new String(item.getStringValue());
		}
		return "";
	}


    public String getDetails() {
        return this.items.toString();
    }

    /**
     * Is this pst file is password protected.
     * @throws PSTException on corrupted pst
     * @throws IOException on bad read
     * @return - true if protected,false otherwise
     * pstfile has the password stored against identifier 0x67FF.
     * if there is no password the value stored is 0x00000000.
     */
    public boolean isPasswordProtected()
            throws PSTException, IOException {
        return (this.getLongItem(0x67FF) != 0);
    }

}