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(Xp3Opener): support XP3 archives merged with EXE files.

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This commit is contained in:
morkt 2015-05-06 02:48:13 +04:00
parent 53b32006cb
commit 72eff1fb2c
1 changed files with 52 additions and 16 deletions
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68
ArcFormats/ArcXP3.cs
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@ -74,11 +74,16 @@ namespace GameRes.Formats.KiriKiri
[Export(typeof(ArchiveFormat))]
public class Xp3Opener : ArchiveFormat
{
public override string Tag { get { return "XP3"; } }
public override string Tag { get { return "XP3"; } }
public override string Description { get { return arcStrings.XP3Description; } }
public override uint Signature { get { return 0x0d335058; } }
public override bool IsHierarchic { get { return true; } }
public override bool CanCreate { get { return true; } }
public override uint Signature { get { return 0x0d335058; } }
public override bool IsHierarchic { get { return true; } }
public override bool CanCreate { get { return true; } }
public Xp3Opener ()
{
Signatures = new uint[] { 0x0d335058, 0 };
}
private static readonly ICrypt NoCryptAlgorithm = new NoCrypt();
@ -97,20 +102,20 @@ namespace GameRes.Formats.KiriKiri
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (0, "XP3\x0d\x0a\x20\x0a\x1a\x8b\x67\x01"))
long base_offset = 0;
if (0x5a4d == file.View.ReadUInt16 (0)) // 'MZ'
base_offset = SkipExeHeader (file);
if (!file.View.AsciiEqual (base_offset, "XP3\x0d\x0a\x20\x0a\x1a\x8b\x67\x01"))
return null;
long dir_offset = file.View.ReadInt64 (0x0b);
if (0x17 == dir_offset)
{
if (1 != file.View.ReadUInt32 (0x13))
return null;
if (0x80 != file.View.ReadUInt32 (0x17))
return null;
dir_offset = file.View.ReadInt64 (0x20);
}
long dir_offset = base_offset + file.View.ReadInt64 (base_offset+0x0b);
if (dir_offset < 0x13 || dir_offset >= file.MaxOffset)
return null;
if (0x80 == file.View.ReadUInt32 (dir_offset))
{
dir_offset = base_offset + file.View.ReadInt64 (dir_offset+9);
if (dir_offset < 0x13 || dir_offset >= file.MaxOffset)
return null;
}
int header_type = file.View.ReadByte (dir_offset);
if (0 != header_type && 1 != header_type)
return null;
@ -210,7 +215,7 @@ namespace GameRes.Formats.KiriKiri
}
var segment = new Xp3Segment {
IsCompressed = compressed,
Offset = segment_offset,
Offset = base_offset+segment_offset,
Size = (uint)segment_size,
PackedSize = (uint)segment_packed_size
};
@ -241,6 +246,37 @@ NextEntry:
return new ArcFile (file, this, dir);
}
private long SkipExeHeader (ArcView file)
{
long offset = 0x10;
long pe_offset = file.View.ReadUInt32 (0x3c);
if (pe_offset < file.MaxOffset && 0x4550 == file.View.ReadUInt32 (pe_offset)) // 'PE'
{
int opt_header = file.View.ReadUInt16 (pe_offset+0x14); // SizeOfOptionalHeader
offset = file.View.ReadUInt32 (pe_offset+0x54); // SizeOfHeaders
long section_table = pe_offset+opt_header+0x18;
int count = file.View.ReadUInt16 (pe_offset+6); // NumberOfSections
if (section_table + 0x28*count < file.MaxOffset)
{
for (int i = 0; i < count; ++i)
{
uint size = file.View.ReadUInt32 (section_table+0x10);
uint addr = file.View.ReadUInt32 (section_table+0x14);
section_table += 0x28;
if (0 != size)
offset = Math.Max ((long)addr + size, offset);
}
}
}
offset = (offset + 0xf) & ~(long)0xf;
for (; offset < file.MaxOffset; offset += 0x10)
{
if (file.View.AsciiEqual (offset, "XP3\x0d\x0a\x20\x0a\x1a\x8b\x67\x01"))
return offset;
}
return 0;
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var xp3_entry = entry as Xp3Entry;