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(fPK): implemented archives version 2.

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morkt 2017-11-09 00:57:32 +04:00
parent dcedc79678
commit cb536f040e
1 changed files with 70 additions and 50 deletions
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120
ArcFormats/Ivory/ArcPK.cs
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@ -2,7 +2,7 @@
//! \date Mon Sep 12 01:39:49 2016
//! \brief 'fPK' resource archive.
//
// Copyright (C) 2016 by morkt
// Copyright (C) 2016-2017 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
@ -44,75 +44,95 @@ namespace GameRes.Formats.Ivory
public override bool IsHierarchic { get { return true; } }
public override bool CanWrite { get { return false; } }
public PakOpener ()
{
Signatures = new uint[] { 0x204B5066, 0x324B5066 };
}
public override ArcFile TryOpen (ArcView file)
{
if (file.MaxOffset != file.View.ReadUInt32 (4))
return null;
int version = '2' == file.View.ReadByte (3) ? 2 : 1;
long base_offset = 0;
List<Entry> dir = null;
bool got_names = false;
long offset = 8;
while (offset < file.MaxOffset)
byte[] names = null;
using (var stream = file.CreateStream())
{
var id = new AsciiString (file.View.ReadBytes (offset, 4));
uint section_size = file.View.ReadUInt32 (offset+4);
if (0 == section_size)
Func<IBinaryStream, long> read_long;
if (2 == version)
read_long = s => s.ReadInt64();
else
read_long = s => s.ReadUInt32();
stream.Position = 4;
if (file.MaxOffset != read_long (stream))
return null;
uint header_size = file.View.ReadUInt32 (offset+8);
if ("cLST" == id)
for (;;)
{
int count = file.View.ReadInt32 (offset+0x10);
if (!IsSaneCount (count))
long section_start = stream.Position;
var id_bytes = stream.ReadBytes (4);
if (0 == id_bytes.Length)
break;
var id = new AsciiString (id_bytes);
var section_size = read_long (stream);
var header_size = read_long (stream);
if (section_size < 4 || header_size > section_size)
return null;
uint key = file.View.ReadUInt32 (offset+0x14);
var clst = file.View.ReadBytes (offset+header_size, section_size - header_size);
Decrypt (clst, key);
dir = new List<Entry> (count);
int index_offset = 0;
for (int i = 0; i < count; ++i)
var content_pos = section_start + header_size;
if ("cLST" == id)
{
var entry = new PkEntry {
NameOffset = LittleEndian.ToInt32 (clst, index_offset),
Offset = LittleEndian.ToUInt32 (clst, index_offset+4),
Size = LittleEndian.ToUInt32 (clst, index_offset+8),
};
dir.Add (entry);
index_offset += 12;
stream.ReadUInt32();
int count = stream.ReadInt32();
if (!IsSaneCount (count))
return null;
uint key = stream.ReadUInt32();
stream.Position = content_pos;
var clst = stream.ReadBytes ((int)(section_size - header_size));
Decrypt (clst, key);
dir = new List<Entry> (count);
using (var index = new BinMemoryStream (clst))
{
for (int i = 0; i < count; ++i)
{
var entry = new PkEntry {
NameOffset = (int)read_long (index),
Offset = (long)read_long (index),
Size = (uint)read_long (index),
};
dir.Add (entry);
}
}
}
}
else if ("cNAM" == id)
{
if (null == dir)
return null;
uint key = file.View.ReadUInt32 (offset+0x10);
var cnam = file.View.ReadBytes (offset+header_size, section_size - header_size);
Decrypt (cnam, key);
foreach (PkEntry entry in dir)
else if ("cNAM" == id)
{
var name = Binary.GetCString (cnam, entry.NameOffset);
entry.Name = name;
if (name.HasExtension (".px"))
entry.Type = "audio";
else
entry.Type = FormatCatalog.Instance.GetTypeFromName (name);
if (null == dir)
return null;
stream.ReadUInt32();
uint key = stream.ReadUInt32();
stream.Position = content_pos;
names = stream.ReadBytes ((int)(section_size - header_size));
Decrypt (names, key);
}
got_names = true;
else if ("cDAT" == id)
{
base_offset = content_pos;
}
stream.Position = section_start + section_size;
}
else if ("cDAT" == id)
{
base_offset = offset + header_size;
}
offset += section_size;
}
if (null == dir || !got_names || 0 == base_offset)
if (null == dir || null == names || 0 == base_offset)
return null;
foreach (var entry in dir)
foreach (PkEntry entry in dir)
{
entry.Offset += base_offset;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
var name = Binary.GetCString (names, entry.NameOffset);
entry.Name = name;
if (name.HasExtension (".px"))
entry.Type = "audio";
else
entry.Type = FormatCatalog.Instance.GetTypeFromName (name);
}
return new ArcFile (file, this, dir);
}