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Move filesystems to a separate library.
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166
DiscImageChef.Filesystems/Opera.cs
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166
DiscImageChef.Filesystems/Opera.cs
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/***************************************************************************
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The Disc Image Chef
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----------------------------------------------------------------------------
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Filename : Opera.cs
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Version : 1.0
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Author(s) : Natalia Portillo
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Component : Filesystem plugins
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Revision : $Revision$
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Last change by : $Author$
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Date : $Date$
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--[ Description ] ----------------------------------------------------------
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Identifies 3DO filesystems (aka Opera) and shows information.
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--[ License ] --------------------------------------------------------------
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the
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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, see <http://www.gnu.org/licenses/>.
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----------------------------------------------------------------------------
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Copyright (C) 2011-2014 Claunia.com
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****************************************************************************/
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//$Id$
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using System;
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using System.Text;
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using DiscImageChef;
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namespace DiscImageChef.Plugins
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{
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class OperaFS : Plugin
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{
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public OperaFS()
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{
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Name = "Opera Filesystem Plugin";
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PluginUUID = new Guid("0ec84ec7-eae6-4196-83fe-943b3fe46dbd");
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}
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public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd)
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{
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if ((2 + partitionStart) >= imagePlugin.GetSectors())
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return false;
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byte[] sb_sector = imagePlugin.ReadSector(0 + partitionStart);
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byte record_type;
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byte[] sync_bytes = new byte[5];
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byte record_version;
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record_type = sb_sector[0x000];
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Array.Copy(sb_sector, 0x001, sync_bytes, 0, 5);
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record_version = sb_sector[0x006];
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if (record_type != 1 || record_version != 1)
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return false;
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return Encoding.ASCII.GetString(sync_bytes) == "ZZZZZ";
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}
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public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd, out string information)
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{
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information = "";
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StringBuilder SuperBlockMetadata = new StringBuilder();
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byte[] sb_sector = imagePlugin.ReadSector(0 + partitionStart);
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OperaSuperBlock sb = new OperaSuperBlock();
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byte[] cString = new byte[32];
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sb.sync_bytes = new byte[5];
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sb.record_type = sb_sector[0x000];
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Array.Copy(sb_sector, 0x001, sb.sync_bytes, 0, 5);
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sb.record_version = sb_sector[0x006];
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sb.volume_flags = sb_sector[0x007];
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Array.Copy(sb_sector, 0x008, cString, 0, 32);
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sb.volume_comment = StringHandlers.CToString(cString);
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Array.Copy(sb_sector, 0x028, cString, 0, 32);
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sb.volume_label = StringHandlers.CToString(cString);
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sb.volume_id = BigEndianBitConverter.ToInt32(sb_sector, 0x048);
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sb.block_size = BigEndianBitConverter.ToInt32(sb_sector, 0x04C);
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sb.block_count = BigEndianBitConverter.ToInt32(sb_sector, 0x050);
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sb.root_dirid = BigEndianBitConverter.ToInt32(sb_sector, 0x054);
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sb.rootdir_blocks = BigEndianBitConverter.ToInt32(sb_sector, 0x058);
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sb.rootdir_bsize = BigEndianBitConverter.ToInt32(sb_sector, 0x05C);
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sb.last_root_copy = BigEndianBitConverter.ToInt32(sb_sector, 0x060);
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if (sb.record_type != 1 || sb.record_version != 1)
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return;
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if (Encoding.ASCII.GetString(sb.sync_bytes) != "ZZZZZ")
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return;
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if (sb.volume_comment.Length == 0)
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sb.volume_comment = "Not set.";
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if (sb.volume_label.Length == 0)
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sb.volume_label = "Not set.";
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SuperBlockMetadata.AppendFormat("Opera filesystem disc.").AppendLine();
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SuperBlockMetadata.AppendFormat("Volume label: {0}", sb.volume_label).AppendLine();
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SuperBlockMetadata.AppendFormat("Volume comment: {0}", sb.volume_comment).AppendLine();
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SuperBlockMetadata.AppendFormat("Volume identifier: 0x{0:X8}", sb.volume_id).AppendLine();
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SuperBlockMetadata.AppendFormat("Block size: {0} bytes", sb.block_size).AppendLine();
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if (imagePlugin.GetSectorSize() == 2336 || imagePlugin.GetSectorSize() == 2352 || imagePlugin.GetSectorSize() == 2448)
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{
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if (sb.block_size != 2048)
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SuperBlockMetadata.AppendFormat("WARNING: Filesystem indicates {0} bytes/block while device indicates {1} bytes/block", sb.block_size, 2048);
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}
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else if (imagePlugin.GetSectorSize() != sb.block_size)
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SuperBlockMetadata.AppendFormat("WARNING: Filesystem indicates {0} bytes/block while device indicates {1} bytes/block", sb.block_size, imagePlugin.GetSectorSize());
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SuperBlockMetadata.AppendFormat("Volume size: {0} blocks, {1} bytes", sb.block_count, sb.block_size * sb.block_count).AppendLine();
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if ((ulong)sb.block_count > imagePlugin.GetSectors())
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SuperBlockMetadata.AppendFormat("WARNING: Filesystem indicates {0} blocks while device indicates {1} blocks", sb.block_count, imagePlugin.GetSectors());
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SuperBlockMetadata.AppendFormat("Root directory identifier: 0x{0:X8}", sb.root_dirid).AppendLine();
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SuperBlockMetadata.AppendFormat("Root directory block size: {0} bytes", sb.rootdir_bsize).AppendLine();
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SuperBlockMetadata.AppendFormat("Root directory size: {0} blocks, {1} bytes", sb.rootdir_blocks, sb.rootdir_bsize * sb.rootdir_blocks).AppendLine();
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SuperBlockMetadata.AppendFormat("Last root directory copy: {0}", sb.last_root_copy).AppendLine();
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information = SuperBlockMetadata.ToString();
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}
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struct OperaSuperBlock
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{
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public byte record_type;
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// 0x000, Record type, must be 1
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public byte[] sync_bytes;
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// 0x001, 5 bytes, "ZZZZZ" = new byte[5];
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public byte record_version;
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// 0x006, Record version, must be 1
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public byte volume_flags;
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// 0x007, Volume flags
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public string volume_comment;
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// 0x008, 32 bytes, volume comment
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public string volume_label;
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// 0x028, 32 bytes, volume label
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public Int32 volume_id;
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// 0x048, Volume ID
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public Int32 block_size;
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// 0x04C, Block size in bytes
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public Int32 block_count;
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// 0x050, Blocks in volume
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public Int32 root_dirid;
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// 0x054, Root directory ID
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public Int32 rootdir_blocks;
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// 0x058, Root directory blocks
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public Int32 rootdir_bsize;
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// 0x05C, Root directory block size
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public Int32 last_root_copy;
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// 0x060, Last root directory copy
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}
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}
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}
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