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https://github.com/Alfresco/alfresco-community-repo.git
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31c250682b
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5081 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
103 lines
2.9 KiB
Java
103 lines
2.9 KiB
Java
/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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package org.alfresco.filesys.smb.dcerpc;
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import org.alfresco.filesys.util.DataPacker;
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/**
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* DCE Data Packer Class
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*/
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public class DCEDataPacker
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{
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/**
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* Unpack a DCE string from the buffer
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*
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* @param buf byte[]
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* @param off int
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* @return String
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* @exception java.lang.IndexOutOfBoundsException If there is not enough data in the buffer.
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*/
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public final static String getDCEString(byte[] buf, int off) throws IndexOutOfBoundsException
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{
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// Check if the buffer is big enough to hold the String header
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if (buf.length < off + 12)
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throw new IndexOutOfBoundsException();
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// Get the maximum and actual string length
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int maxLen = DataPacker.getIntelInt(buf, off);
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int strLen = DataPacker.getIntelInt(buf, off + 8);
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// Read the Unicode string
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return DataPacker.getUnicodeString(buf, off + 12, strLen);
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}
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/**
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* Pack a DCE string into the buffer
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*
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* @param buf byte[]
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* @param off int
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* @param str String
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* @param incNul boolean
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* @return int
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*/
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public final static int putDCEString(byte[] buf, int off, String str, boolean incNul)
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{
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// Pack the string header
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DataPacker.putIntelInt(str.length() + 1, buf, off);
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DataPacker.putZeros(buf, off + 4, 4);
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if (incNul == false)
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DataPacker.putIntelInt(str.length(), buf, off + 8);
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else
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DataPacker.putIntelInt(str.length() + 1, buf, off + 8);
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// Pack the string
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return DataPacker.putUnicodeString(str, buf, off + 12, incNul);
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}
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/**
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* Align a buffer offset on a longword boundary
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*
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* @param pos int
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* @return int
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*/
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public final static int wordAlign(int pos)
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{
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return (pos + 1) & 0xFFFFFFFE;
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}
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/**
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* Align a buffer offset on a longword boundary
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*
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* @param pos int
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* @return int
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*/
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public final static int longwordAlign(int pos)
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{
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return (pos + 3) & 0xFFFFFFFC;
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}
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}
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