mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
237 lines
11 KiB
C#
237 lines
11 KiB
C#
|
using System;
|
||
|
|
using System.IO;
|
||
|
|
using System.Text;
|
||
|
|
using FileSystemIDandChk;
|
||
|
|
|
||
|
|
// Information from Inside Macintosh
|
||
|
|
|
||
|
|
namespace FileSystemIDandChk.Plugins
|
||
|
|
{
|
||
|
|
class BeFS : Plugin
|
||
|
|
{
|
||
|
|
public BeFS(PluginBase Core)
|
||
|
|
{
|
||
|
|
base.Name = "Be Filesystem";
|
||
|
|
base.PluginUUID = new Guid("dc8572b3-b6ad-46e4-8de9-cbe123ff6672");
|
||
|
|
}
|
||
|
|
|
||
|
|
public override bool Identify(FileStream stream, long offset)
|
||
|
|
{
|
||
|
|
UInt32 magic;
|
||
|
|
|
||
|
|
BinaryReader br = new BinaryReader(stream);
|
||
|
|
|
||
|
|
br.BaseStream.Seek(32 + offset, SeekOrigin.Begin); // Seek to magic
|
||
|
|
|
||
|
|
magic = br.ReadUInt32();
|
||
|
|
|
||
|
|
if(magic == 0x42465331) // Little-endian BFS
|
||
|
|
return true;
|
||
|
|
else if(magic == 0x31534642) // Big-endian BFS
|
||
|
|
return true;
|
||
|
|
else
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void GetInformation (FileStream stream, long offset, out string information)
|
||
|
|
{
|
||
|
|
information = "";
|
||
|
|
byte[] name_bytes = new byte[32];
|
||
|
|
|
||
|
|
StringBuilder sb = new StringBuilder();
|
||
|
|
|
||
|
|
BeSuperBlock besb = new BeSuperBlock();
|
||
|
|
|
||
|
|
BinaryReader br = new BinaryReader(stream);
|
||
|
|
br.BaseStream.Seek(offset, SeekOrigin.Begin);
|
||
|
|
name_bytes = br.ReadBytes(32);
|
||
|
|
|
||
|
|
besb.name = StringHandlers.CToString(name_bytes);
|
||
|
|
besb.magic1 = br.ReadUInt32();
|
||
|
|
besb.fs_byte_order = br.ReadUInt32();
|
||
|
|
besb.block_size = br.ReadUInt32();
|
||
|
|
besb.block_shift = br.ReadUInt32();
|
||
|
|
besb.num_blocks = br.ReadInt64();
|
||
|
|
besb.used_blocks = br.ReadInt64();
|
||
|
|
besb.inode_size = br.ReadInt32();
|
||
|
|
besb.magic2 = br.ReadUInt32();
|
||
|
|
besb.blocks_per_ag = br.ReadInt32();
|
||
|
|
besb.ag_shift = br.ReadInt32();
|
||
|
|
besb.num_ags = br.ReadInt32();
|
||
|
|
besb.flags = br.ReadUInt32();
|
||
|
|
besb.log_blocks_ag = br.ReadInt32();
|
||
|
|
besb.log_blocks_start = br.ReadUInt16();
|
||
|
|
besb.log_blocks_len = br.ReadUInt16();
|
||
|
|
besb.log_start = br.ReadInt64();
|
||
|
|
besb.log_end = br.ReadInt64();
|
||
|
|
besb.magic3 = br.ReadUInt32();
|
||
|
|
besb.root_dir_ag = br.ReadInt32();
|
||
|
|
besb.root_dir_start = br.ReadUInt16();
|
||
|
|
besb.root_dir_len = br.ReadUInt16();
|
||
|
|
besb.indices_ag = br.ReadInt32();
|
||
|
|
besb.indices_start = br.ReadUInt16();
|
||
|
|
besb.indices_len = br.ReadUInt16();
|
||
|
|
|
||
|
|
if(besb.magic1 == 0x31534642 && besb.fs_byte_order == 0x45474942) // Big-endian filesystem
|
||
|
|
{
|
||
|
|
sb.AppendLine("Big-endian BeFS");
|
||
|
|
|
||
|
|
// Swap everything in the super block
|
||
|
|
byte[] sixteen_bits = new byte[2];
|
||
|
|
byte[] thirtytwo_bits = new byte[4];
|
||
|
|
byte[] sixtyfour_bits = new byte[8];
|
||
|
|
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.magic1);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.magic1 = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.fs_byte_order);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.fs_byte_order = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.block_size);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.block_size = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.block_shift);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.block_shift = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
sixtyfour_bits = BitConverter.GetBytes(besb.num_blocks);
|
||
|
|
sixtyfour_bits = Swapping.SwapEightBytes(sixtyfour_bits);
|
||
|
|
besb.num_blocks = BitConverter.ToInt64(sixtyfour_bits, 0);
|
||
|
|
sixtyfour_bits = BitConverter.GetBytes(besb.used_blocks);
|
||
|
|
sixtyfour_bits = Swapping.SwapEightBytes(sixtyfour_bits);
|
||
|
|
besb.used_blocks = BitConverter.ToInt64(sixtyfour_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.inode_size);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.inode_size = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.magic2);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.magic2 = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.blocks_per_ag);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.blocks_per_ag = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.ag_shift);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.ag_shift = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.num_ags);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.num_ags = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.flags);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.flags = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.log_blocks_ag);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.log_blocks_ag = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
sixteen_bits = BitConverter.GetBytes(besb.log_blocks_start);
|
||
|
|
sixteen_bits = Swapping.SwapTwoBytes(sixteen_bits);
|
||
|
|
besb.log_blocks_start = BitConverter.ToUInt16(sixteen_bits, 0);
|
||
|
|
sixteen_bits = BitConverter.GetBytes(besb.log_blocks_len);
|
||
|
|
sixteen_bits = Swapping.SwapTwoBytes(sixteen_bits);
|
||
|
|
besb.log_blocks_len = BitConverter.ToUInt16(sixteen_bits, 0);
|
||
|
|
sixtyfour_bits = BitConverter.GetBytes(besb.log_start);
|
||
|
|
sixtyfour_bits = Swapping.SwapEightBytes(sixtyfour_bits);
|
||
|
|
besb.log_start = BitConverter.ToInt64(sixtyfour_bits, 0);
|
||
|
|
sixtyfour_bits = BitConverter.GetBytes(besb.log_end);
|
||
|
|
sixtyfour_bits = Swapping.SwapEightBytes(sixtyfour_bits);
|
||
|
|
besb.log_end = BitConverter.ToInt64(sixtyfour_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.magic3);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.magic3 = BitConverter.ToUInt32(thirtytwo_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.root_dir_ag);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.root_dir_ag = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
sixteen_bits = BitConverter.GetBytes(besb.root_dir_start);
|
||
|
|
sixteen_bits = Swapping.SwapTwoBytes(sixteen_bits);
|
||
|
|
besb.root_dir_start = BitConverter.ToUInt16(sixteen_bits, 0);
|
||
|
|
sixteen_bits = BitConverter.GetBytes(besb.root_dir_len);
|
||
|
|
sixteen_bits = Swapping.SwapTwoBytes(sixteen_bits);
|
||
|
|
besb.root_dir_len = BitConverter.ToUInt16(sixteen_bits, 0);
|
||
|
|
thirtytwo_bits = BitConverter.GetBytes(besb.indices_ag);
|
||
|
|
thirtytwo_bits = Swapping.SwapFourBytes(thirtytwo_bits);
|
||
|
|
besb.indices_ag = BitConverter.ToInt32(thirtytwo_bits, 0);
|
||
|
|
sixteen_bits = BitConverter.GetBytes(besb.indices_start);
|
||
|
|
sixteen_bits = Swapping.SwapTwoBytes(sixteen_bits);
|
||
|
|
besb.indices_start = BitConverter.ToUInt16(sixteen_bits, 0);
|
||
|
|
sixteen_bits = BitConverter.GetBytes(besb.indices_len);
|
||
|
|
sixteen_bits = Swapping.SwapTwoBytes(sixteen_bits);
|
||
|
|
besb.indices_len = BitConverter.ToUInt16(sixteen_bits, 0);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
sb.AppendLine("Little-endian BeFS");
|
||
|
|
|
||
|
|
if(besb.magic1 != 0x42465331 || besb.fs_byte_order != 0x42494745 ||
|
||
|
|
besb.magic2 != 0xDD121031 || besb.magic3 != 0x15B6830E ||
|
||
|
|
besb.root_dir_len != 1 || besb.indices_len != 1 ||
|
||
|
|
(1 << (int)besb.block_shift) != besb.block_size)
|
||
|
|
{
|
||
|
|
sb.AppendLine("Superblock seems corrupt, following information may be incorrect");
|
||
|
|
sb.AppendFormat("Magic 1: 0x{0:X8} (Should be 0x42465331)", besb.magic1).AppendLine();
|
||
|
|
sb.AppendFormat("Magic 2: 0x{0:X8} (Should be 0xDD121031)", besb.magic2).AppendLine();
|
||
|
|
sb.AppendFormat("Magic 3: 0x{0:X8} (Should be 0x15B6830E)", besb.magic3).AppendLine();
|
||
|
|
sb.AppendFormat("Filesystem endianness: 0x{0:X8} (Should be 0x42494745)", besb.fs_byte_order).AppendLine();
|
||
|
|
sb.AppendFormat("Root folder's i-node size: {0} blocks (Should be 1)", besb.root_dir_len).AppendLine();
|
||
|
|
sb.AppendFormat("Indices' i-node size: {0} blocks (Should be 1)", besb.indices_len).AppendLine();
|
||
|
|
sb.AppendFormat("1 << block_shift == block_size => 1 << {0} == {1} (Should be {2})", besb.block_shift,
|
||
|
|
1 << (int)besb.block_shift, besb.block_size).AppendLine();
|
||
|
|
}
|
||
|
|
|
||
|
|
if(besb.flags == 0x434C454E)
|
||
|
|
{
|
||
|
|
if(besb.log_start == besb.log_end)
|
||
|
|
sb.AppendLine("Filesystem is clean");
|
||
|
|
else
|
||
|
|
sb.AppendLine("Filesystem is dirty");
|
||
|
|
}
|
||
|
|
else if(besb.flags == 0x44495254)
|
||
|
|
sb.AppendLine("Filesystem is dirty");
|
||
|
|
else
|
||
|
|
sb.AppendFormat("Unknown flags: {0:X8}", besb.flags).AppendLine();
|
||
|
|
|
||
|
|
sb.AppendFormat("Volume name: {0}", besb.name).AppendLine();
|
||
|
|
sb.AppendFormat("{0} bytes per block", besb.block_size).AppendLine();
|
||
|
|
sb.AppendFormat("{0} blocks in volume ({1} bytes)", besb.num_blocks, besb.num_blocks*besb.block_size).AppendLine();
|
||
|
|
sb.AppendFormat("{0} used blocks ({1} bytes)", besb.used_blocks, besb.used_blocks*besb.block_size).AppendLine();
|
||
|
|
sb.AppendFormat("{0} bytes per i-node", besb.inode_size).AppendLine();
|
||
|
|
sb.AppendFormat("{0} blocks per allocation group ({1} bytes)", besb.blocks_per_ag, besb.blocks_per_ag*besb.block_size).AppendLine();
|
||
|
|
sb.AppendFormat("{0} allocation groups in volume", besb.num_ags).AppendLine();
|
||
|
|
sb.AppendFormat("Journal resides in block {0} of allocation group {1} and runs for {2} blocks ({3} bytes)", besb.log_blocks_start,
|
||
|
|
besb.log_blocks_ag, besb.log_blocks_len, besb.log_blocks_len*besb.block_size).AppendLine();
|
||
|
|
sb.AppendFormat("Journal starts in byte {0} and ends in byte {1}", besb.log_start, besb.log_end).AppendLine();
|
||
|
|
sb.AppendFormat("Root folder's i-node resides in block {0} of allocation group {1} and runs for {2} blocks ({3} bytes)", besb.root_dir_start,
|
||
|
|
besb.root_dir_ag, besb.root_dir_len, besb.root_dir_len*besb.block_size).AppendLine();
|
||
|
|
sb.AppendFormat("Indices' i-node resides in block {0} of allocation group {1} and runs for {2} blocks ({3} bytes)", besb.indices_start,
|
||
|
|
besb.indices_ag, besb.indices_len, besb.indices_len*besb.block_size).AppendLine();
|
||
|
|
|
||
|
|
information = sb.ToString();
|
||
|
|
}
|
||
|
|
|
||
|
|
private struct BeSuperBlock
|
||
|
|
{
|
||
|
|
public string name; // Volume name, 32 bytes
|
||
|
|
public UInt32 magic1; // "BFS1", 0x42465331
|
||
|
|
public UInt32 fs_byte_order; // "BIGE", 0x42494745
|
||
|
|
public UInt32 block_size; // Bytes per block
|
||
|
|
public UInt32 block_shift; // 1 << block_shift == block_size
|
||
|
|
public Int64 num_blocks; // Blocks in volume
|
||
|
|
public Int64 used_blocks; // Used blocks in volume
|
||
|
|
public Int32 inode_size; // Bytes per inode
|
||
|
|
public UInt32 magic2; // 0xDD121031
|
||
|
|
public Int32 blocks_per_ag; // Blocks per allocation group
|
||
|
|
public Int32 ag_shift; // 1 << ag_shift == blocks_per_ag
|
||
|
|
public Int32 num_ags; // Allocation groups in volume
|
||
|
|
public UInt32 flags; // 0x434c454e if clean, 0x44495254 if dirty
|
||
|
|
public Int32 log_blocks_ag; // Allocation group of journal
|
||
|
|
public UInt16 log_blocks_start; // Start block of journal, inside ag
|
||
|
|
public UInt16 log_blocks_len; // Length in blocks of journal, inside ag
|
||
|
|
public Int64 log_start; // Start of journal
|
||
|
|
public Int64 log_end; // End of journal
|
||
|
|
public UInt32 magic3; // 0x15B6830E
|
||
|
|
public Int32 root_dir_ag; // Allocation group where root folder's i-node resides
|
||
|
|
public UInt16 root_dir_start; // Start in ag of root folder's i-node
|
||
|
|
public UInt16 root_dir_len; // As this is part of inode_addr, this is 1
|
||
|
|
public Int32 indices_ag; // Allocation group where indices' i-node resides
|
||
|
|
public UInt16 indices_start; // Start in ag of indices' i-node
|
||
|
|
public UInt16 indices_len; // As this is part of inode_addr, this is 1
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|