diff options
Diffstat (limited to 'src/org/catacombae/rarx/RARHeader.java')
| -rw-r--r-- | src/org/catacombae/rarx/RARHeader.java | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/src/org/catacombae/rarx/RARHeader.java b/src/org/catacombae/rarx/RARHeader.java deleted file mode 100644 index c631f5f..0000000 --- a/src/org/catacombae/rarx/RARHeader.java +++ /dev/null @@ -1,121 +0,0 @@ -/*-
- * 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;
-
-import java.io.PrintStream;
-import java.util.zip.CRC32;
-
-public abstract class RARHeader {
- /*
- * Common fields for all RAR headers
- * size: 7 bytes
- *
- * BP Size Description
- * 0 2 HeadCRC
- * 2 1 HeadType
- * 3 2 Flags
- * 5 2 HeadSize
- */
- // Possible values for the fields headType in various classes
- //public static final int ALL_HEAD = 0;
- public static final int MARK_HEAD = 0x72; // 0x69 for UniquE! ones..? However, this field isn't really needed.
- public static final int MAIN_HEAD = 0x73;
- public static final int FILE_HEAD = 0x74;
- public static final int COMM_HEAD = 0x75;
- public static final int AV_HEAD = 0x76;
- public static final int SUB_HEAD = 0x77;
- public static final int PROTECT_HEAD = 0x78;
- public static final int COMMENT_HEAD = 0x7a;
- public static final int EOF_HEAD = 0x7b;
-
- /* The versioning seems very simple. version 2.0 is represented
- by the value 20 (0x14), 2.6 by the value 26 (0x1a) etc. */
- public static final int UNPACK_VERSION_2_0 = 0x14;
- public static final int UNPACK_VERSION_2_6 = 0x1a; // efterlyst-bfc.rar
- public static final int UNPACK_VERSION_2_9 = 0x1d;
-
- public static final int METHOD_UNCOMPRESSED = 0x30; // Observerad i 2.0, 2.9
- public static final int METHOD_COMPRESSION_1 = 0x35; // Observerad i 2.0, 2.9
- public static final int METHOD_COMPRESSION_2 = 0x33; // Observerad i 2.0 (flera g�nger, men ovanligt), 2.9
-
- /* Hypotes: de tv� minst signifikanta bitarna i Flags indikerar om en fil
- forts�tter p� nytt medium. Om bit 0 �r satt �r den aktuella filen en
- forts�ttning p� en tidigare fil. Om bit 1 �r satt forts�tter den
- aktuella filen p� ytterligare nya media.
- Hypotes bekr�ftad. */
-
-
- private final byte[] headCRC = new byte[2];
- private final byte[] headType = new byte[1];
- private final byte[] flags = new byte[2];
- private final byte[] headSize = new byte[2];
- private final CRC32 crc = new CRC32();
-
- public RARHeader(byte[] data, int offset) {
- System.arraycopy(data, offset+0, headCRC, 0, 2);
- System.arraycopy(data, offset+2, headType, 0, 1);
- System.arraycopy(data, offset+3, flags, 0, 2);
- System.arraycopy(data, offset+5, headSize, 0, 2);
- }
-
- public int getSize() { return _getSize(); }
- private int _getSize() { return 7; }
-
- protected void validateData() {
- if(calculateHeadCRC() != getHeadCRC())
- throw new InvalidDataException("Incorrect header CRC!");
- }
-
- public short getHeadCRC() { return Util.readShortLE(headCRC); }
- public byte getHeadType() { return Util.readByteLE(headType); }
- public short getFlags() { return Util.readShortLE(flags); }
- public short getHeadSize() { return Util.readShortLE(headSize); }
-
- public boolean getFlag(int bitNumber) {
- return Util.getBit(getFlags(), bitNumber);//((getFlags() >> byteNumber) & 0x1) == 0x1;
- }
-
-
- public byte[] getHeaderData() {
- byte[] data = new byte[_getSize()];
- System.arraycopy(headCRC, 0, data, 0, headCRC.length);
- System.arraycopy(headType, 0, data, 2, headType.length);
- System.arraycopy(flags, 0, data, 3, flags.length);
- System.arraycopy(headSize, 0, data, 5, headSize.length);
- return data;
- }
-
- public short calculateHeadCRC() {
- crc.reset();
- crc.update(getHeaderData(), 2, getSize()-2);
- return (short)(crc.getValue());
- }
- protected void printFields(PrintStream ps, String prefix) {
- ps.println(prefix + " HeadCRC: " + Util.toHexStringBE(getHeadCRC()));
- if(calculateHeadCRC() != getHeadCRC())
- ps.println(prefix + " CHECKSUMS NOT MATCHING! (0x" +
- Util.toHexStringBE(getHeadCRC()) + " != 0x" +
- Util.toHexStringBE(calculateHeadCRC()) + "))");
- ps.println(prefix + " HeadType: " + Util.toHexStringBE(getHeadType()));
- ps.println(prefix + " Flags: " + Util.toHexStringBE(getFlags()));
- ps.println(prefix + " HeadSize: " + getHeadSize() + " bytes");
- }
-}
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