mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-23 21:55:34 +08:00
(AVC.DatOpener): try out several predefined schemes.
This commit is contained in:
morkt
parent
c79ba1d469
commit
e1c2d0f2ce
@ -34,10 +34,12 @@ namespace GameRes.Formats.AVC
|
|||||||
public class ArchiveFile : ArcFile
|
public class ArchiveFile : ArcFile
|
||||||
{
|
{
|
||||||
public readonly byte[] Key;
|
public readonly byte[] Key;
|
||||||
|
public readonly int HeaderOffset;
|
||||||
|
|
||||||
public ArchiveFile (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key)
|
public ArchiveFile (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, int offset, byte[] key)
|
||||||
: base (arc, impl, dir)
|
: base (arc, impl, dir)
|
||||||
{
|
{
|
||||||
|
HeaderOffset = offset;
|
||||||
Key = key;
|
Key = key;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
@ -56,61 +58,13 @@ namespace GameRes.Formats.AVC
|
|||||||
Extensions = new string[] { "dat" };
|
Extensions = new string[] { "dat" };
|
||||||
}
|
}
|
||||||
|
|
||||||
private static readonly string ArchiveKey = "SETSUEI-";
|
|
||||||
|
|
||||||
public override ArcFile TryOpen (ArcView file)
|
public override ArcFile TryOpen (ArcView file)
|
||||||
{
|
{
|
||||||
var header = new byte[0x34];
|
var reader = new AdvReader (file);
|
||||||
if (0x34 != file.View.Read (0, header, 0, 0x34))
|
var dir = reader.GetIndex();
|
||||||
|
if (null == dir)
|
||||||
return null;
|
return null;
|
||||||
var key = new byte[8];
|
return new ArchiveFile (file, this, dir, reader.HeaderOffset, reader.Key);
|
||||||
/*
|
|
||||||
for (int i = 0; i < 8; ++i)
|
|
||||||
header[8+i] ^= (byte)ArchiveKey[i];
|
|
||||||
for (int i = 0; i < 0x24; ++i)
|
|
||||||
header[0x10+i] ^= header[8+(i&7)];
|
|
||||||
if (!Binary.AsciiEqual (header, 0x10, "ARCHIVE"))
|
|
||||||
return null;
|
|
||||||
Buffer.BlockCopy (header, 8, key, 0, 8);
|
|
||||||
*/
|
|
||||||
for (int i = 0; i < 8; ++i)
|
|
||||||
key[i] = (byte)(header[0x10+i] ^ "ARCHIVE\0"[i]);
|
|
||||||
for (int i = 9; i < 0x24; ++i)
|
|
||||||
header[0x10+i] ^= key[i&7];
|
|
||||||
int index_offset = LittleEndian.ToInt32 (header, 0x20);
|
|
||||||
int count = LittleEndian.ToInt32 (header, 0x24);
|
|
||||||
if (index_offset < 0x24 || index_offset >= file.MaxOffset || count <= 0 || count > 0xfffff)
|
|
||||||
return null;
|
|
||||||
var index = new byte[0x114 * count];
|
|
||||||
int index_size = file.View.Read (index_offset+0x10, index, 0, (uint)index.Length);
|
|
||||||
count = index_size / 0x114;
|
|
||||||
if (count * 0x114 != index_size)
|
|
||||||
return null;
|
|
||||||
for (int i = 0; i < index_size; ++i)
|
|
||||||
index[i] ^= key[(index_offset+i)&7];
|
|
||||||
var dir = new List<Entry> (count);
|
|
||||||
index_offset = 0;
|
|
||||||
for (int i = 0; i < count; ++i)
|
|
||||||
{
|
|
||||||
if (0 != index[index_offset++])
|
|
||||||
return null;
|
|
||||||
int name_length = 0;
|
|
||||||
while (name_length < 0x100 && 0 != index[index_offset+name_length])
|
|
||||||
name_length++;
|
|
||||||
if (0 == name_length)
|
|
||||||
{
|
|
||||||
index_offset += 0x113;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
var name = Encodings.cp932.GetString (index, index_offset, name_length);
|
|
||||||
var entry = FormatCatalog.Instance.CreateEntry (name);
|
|
||||||
index_offset += 0x107;
|
|
||||||
entry.Offset = 0x10 + LittleEndian.ToUInt32 (index, index_offset);
|
|
||||||
entry.Size = LittleEndian.ToUInt32 (index, index_offset+4);
|
|
||||||
index_offset += 0x0c;
|
|
||||||
dir.Add (entry);
|
|
||||||
}
|
|
||||||
return new ArchiveFile (file, this, dir, key);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
||||||
@ -120,10 +74,121 @@ namespace GameRes.Formats.AVC
|
|||||||
return arc.File.CreateStream (entry.Offset, entry.Size);
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
||||||
var data = new byte[entry.Size];
|
var data = new byte[entry.Size];
|
||||||
arc.File.View.Read (entry.Offset, data, 0, entry.Size);
|
arc.File.View.Read (entry.Offset, data, 0, entry.Size);
|
||||||
int base_offset = (int)(entry.Offset-0x10);
|
int base_offset = (int)(entry.Offset-arcf.HeaderOffset);
|
||||||
for (int i = 0; i < data.Length; ++i)
|
for (int i = 0; i < data.Length; ++i)
|
||||||
data[i] ^= arcf.Key[((base_offset+i)&7)];
|
data[i] ^= arcf.Key[((base_offset+i)&7)];
|
||||||
return new MemoryStream (data, false);
|
return new MemoryStream (data, false);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
internal class AdvReader
|
||||||
|
{
|
||||||
|
ArcView m_file;
|
||||||
|
byte[] m_header = new byte[0x80];
|
||||||
|
byte[] m_key = new byte[8];
|
||||||
|
byte[] m_index;
|
||||||
|
int m_index_offset;
|
||||||
|
int m_count;
|
||||||
|
int m_header_offset;
|
||||||
|
|
||||||
|
public byte[] Key { get { return m_key; } }
|
||||||
|
public int HeaderOffset { get { return m_header_offset; } }
|
||||||
|
|
||||||
|
public AdvReader (ArcView file)
|
||||||
|
{
|
||||||
|
m_file = file;
|
||||||
|
}
|
||||||
|
|
||||||
|
public List<Entry> GetIndex ()
|
||||||
|
{
|
||||||
|
if (m_header.Length != m_file.View.Read (0, m_header, 0, (uint)m_header.Length))
|
||||||
|
return null;
|
||||||
|
foreach (var scheme in KnownSchemes)
|
||||||
|
{
|
||||||
|
if (!ReadIndex (scheme.KeyOffset, scheme.HeaderOffset))
|
||||||
|
continue;
|
||||||
|
try
|
||||||
|
{
|
||||||
|
var dir = ParseIndex();
|
||||||
|
if (null != dir)
|
||||||
|
return dir;
|
||||||
|
}
|
||||||
|
catch { /* ignore parse errors */ }
|
||||||
|
}
|
||||||
|
return null;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ReadIndex (int key_offset, int header_offset)
|
||||||
|
{
|
||||||
|
// placing predefined string into XORed file is a very smart move
|
||||||
|
for (int i = 0; i < 8; ++i)
|
||||||
|
{
|
||||||
|
var symbol = m_header[header_offset+i] ^ "ARCHIVE\0"[i];
|
||||||
|
var check = m_header[key_offset+i] ^ symbol;
|
||||||
|
if (check < 0x20 || check > 0x7e)
|
||||||
|
return false;
|
||||||
|
Key[i] = (byte)symbol;
|
||||||
|
}
|
||||||
|
for (int i = 0x10; i < 0x24; ++i)
|
||||||
|
m_header[header_offset+i] ^= Key[i&7];
|
||||||
|
int entry_size = LittleEndian.ToInt32 (m_header, header_offset+0x14);
|
||||||
|
if (0x114 != entry_size)
|
||||||
|
return false;
|
||||||
|
m_index_offset = LittleEndian.ToInt32 (m_header, header_offset+0x10);
|
||||||
|
m_count = LittleEndian.ToInt32 (m_header, header_offset+0x20);
|
||||||
|
if (m_index_offset < 0x24 || (long)m_index_offset+header_offset >= m_file.MaxOffset
|
||||||
|
|| m_count <= 0 || m_count > 0xffff)
|
||||||
|
return false;
|
||||||
|
int index_size = 0x114 * m_count;
|
||||||
|
if (null == m_index || m_index.Length < index_size)
|
||||||
|
m_index = new byte[index_size];
|
||||||
|
if (index_size != m_file.View.Read (m_index_offset+header_offset, m_index, 0, (uint)index_size))
|
||||||
|
return false;
|
||||||
|
m_header_offset = header_offset;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
List<Entry> ParseIndex()
|
||||||
|
{
|
||||||
|
for (int i = 0; i < 0x114 * m_count; ++i)
|
||||||
|
m_index[i] ^= Key[(m_index_offset+i)&7];
|
||||||
|
var dir = new List<Entry> (m_count);
|
||||||
|
int index_offset = 0;
|
||||||
|
for (int i = 0; i < m_count; ++i)
|
||||||
|
{
|
||||||
|
if (0 != m_index[index_offset++])
|
||||||
|
return null;
|
||||||
|
int name_length = 0;
|
||||||
|
while (name_length < 0x100 && 0 != m_index[index_offset+name_length])
|
||||||
|
name_length++;
|
||||||
|
if (0 == name_length)
|
||||||
|
{
|
||||||
|
index_offset += 0x113;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
var name = Encodings.cp932.GetString (m_index, index_offset, name_length);
|
||||||
|
var entry = FormatCatalog.Instance.CreateEntry (name);
|
||||||
|
index_offset += 0x107;
|
||||||
|
entry.Offset = m_header_offset + LittleEndian.ToUInt32 (m_index, index_offset);
|
||||||
|
entry.Size = LittleEndian.ToUInt32 (m_index, index_offset+4);
|
||||||
|
index_offset += 0x0c;
|
||||||
|
dir.Add (entry);
|
||||||
|
}
|
||||||
|
return dir;
|
||||||
|
}
|
||||||
|
|
||||||
|
internal class Scheme
|
||||||
|
{
|
||||||
|
public string Password;
|
||||||
|
public int KeyOffset;
|
||||||
|
public int HeaderOffset;
|
||||||
|
};
|
||||||
|
|
||||||
|
private static readonly Scheme[] KnownSchemes = new Scheme[] {
|
||||||
|
new Scheme { Password="SETSUEI-", KeyOffset=0x08, HeaderOffset=0x10 }, // Setsuei
|
||||||
|
new Scheme { Password="CHOKOPAI", KeyOffset=0x35, HeaderOffset=0x51 }, // Chokotto*Vampire!
|
||||||
|
new Scheme { Password="ClOVeRrE", KeyOffset=0x11, HeaderOffset=0x46 }, // Clover Point
|
||||||
|
new Scheme { Password="-AYASEKE", KeyOffset=0x0c, HeaderOffset=0x15 }, // Ayase Ke no Onna
|
||||||
|
};
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user