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implemented QLIE archives versions 1 and 3.

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This commit is contained in:
morkt 2015-10-28 02:49:44 +04:00
parent 9e5990b118
commit 91af591363
1 changed files with 40 additions and 21 deletions
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61
ArcFormats/ArcQLIE.cs
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@ -62,16 +62,25 @@ namespace GameRes.Formats.Qlie
|| !file.View.AsciiEqual (index_offset+0xC, ".0"))
return null;
int pack_version = file.View.ReadByte (index_offset+0xB) - '0';
if (pack_version != 2)
if (pack_version < 1 || pack_version > 3)
throw new NotSupportedException ("Not supported QLIE archive version");
int count = file.View.ReadInt32 (index_offset+0x10);
if (count <= 0 || count > 0xfffff)
if (!IsSaneCount (count))
return null;
index_offset = file.View.ReadInt64 (index_offset+0x14);
if (index_offset < 0 || index_offset >= file.MaxOffset)
return null;
int pack_key = 0xC4;
uint pack_key;
if (3 == pack_version)
{
var key_data = new byte[0x100];
file.View.Read (file.MaxOffset-0x41C, key_data, 0, 0x100);
pack_key = GenerateKey (key_data) & 0x0FFFFFFFu;
}
else
pack_key = 0xC4;
var name_buffer = new byte[0x100];
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
@ -82,7 +91,7 @@ namespace GameRes.Formats.Qlie
if (name_length != file.View.Read (index_offset+2, name_buffer, 0, (uint)name_length))
return null;
int key = name_length + (pack_key ^ 0x3e);
int key = name_length + ((int)pack_key ^ 0x3e);
for (int k = 0; k < name_length; ++k)
name_buffer[k] ^= (byte)(((k + 1) ^ key) + k + 1);
@ -99,7 +108,7 @@ namespace GameRes.Formats.Qlie
entry.IsEncrypted = 0 != file.View.ReadInt32 (index_offset+0x14);
entry.Hash = file.View.ReadUInt32 (index_offset+0x18);
if (3 == pack_version)
entry.Key = (uint)pack_key;
entry.Key = pack_key;
else
entry.Key = 0;
dir.Add (entry);
@ -135,28 +144,19 @@ namespace GameRes.Formats.Qlie
if (length > buffer.Length || offset > buffer.Length - length)
throw new ArgumentOutOfRangeException ("length");
var table = new uint[2,2];
var xor = new uint[2];
for (int i = 0; i < 2; ++i)
{
table[0,i] = 0xA73C5F9Du;
table[1,i] = 0xCE24F523u;
xor[i] = ((uint)length + key) ^ 0xFEC9753Eu;
}
ulong hash = 0xA73C5F9DA73C5F9Dul;
ulong xor = ((uint)length + key) ^ 0xFEC9753Eu;
xor |= xor << 32;
unsafe
{
fixed (byte* raw = buffer)
{
uint* encoded = (uint*)(raw + offset);
ulong* encoded = (ulong*)(raw + offset);
for (int i = 0; i < length / 8; ++i)
{
for (int k = 0; k < 2; ++k)
{
table[0,k] = (table[0,k] + table[1,k]) ^ xor[k];
*encoded ^= table[0,k];
xor[k] = *encoded++;
}
hash = MMX.PAddD (hash, 0xCE24F523CE24F523ul) ^ xor;
xor = *encoded ^ hash;
*encoded++ = xor;
}
}
}
@ -246,5 +246,24 @@ namespace GameRes.Formats.Qlie
return output;
}
uint GenerateKey (byte[] key_data)
{
ulong hash = 0;
ulong key = 0;
unsafe
{
fixed (byte* data = key_data)
{
ulong* data64 = (ulong*)data;
for (int i = key_data.Length / 8; i > 0; --i)
{
hash = MMX.PAddW (hash, 0x0307030703070307);
key = MMX.PAddW (key, *data64++ ^ hash);
}
}
}
return (uint)(key ^ (key >> 32));
}
}
}