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updated formats.

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(ExeFile): limited support for 16-bit Windows executables.
(MbImageFormat): recognize 'MK' signature.
(XP3, VF, YPF): added common executable signature.
(PICT): improved parser.
(Macromedia): improved support, recognize archives within windows executables.
(SEEN): fixed decompression.
This commit is contained in:
morkt
2023-09-25 21:01:22 +04:00
parent bfd81f9ec4
commit 3c3f2013ef
16 changed files with 220 additions and 374 deletions
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35
ArcFormats/ExeFile.cs
View File

@@ -40,6 +40,7 @@ namespace GameRes.Formats
Section m_overlay;
uint m_image_base = 0;
List<ImageSection> m_section_list;
bool? m_is_NE;
public ExeFile (ArcView file)
{
@@ -56,9 +57,18 @@ namespace GameRes.Formats
/// </summary>
public Section Whole { get; private set; }
public bool IsWin16 => m_is_NE ?? (m_is_NE = IsNe()).Value;
private bool IsNe ()
{
uint ne_offset = View.ReadUInt32 (0x3C);
return ne_offset < m_file.MaxOffset-2 && View.AsciiEqual (ne_offset, "NE");
}
/// <summary>
/// Dictionary of executable file sections.
/// </summary>
///
public IReadOnlyDictionary<string, Section> Sections
{
get
@@ -255,6 +265,11 @@ namespace GameRes.Formats
private void InitSectionTable ()
{
if (IsWin16)
{
InitNe();
return;
}
long pe_offset = GetHeaderOffset();
int opt_header = View.ReadUInt16 (pe_offset+0x14); // SizeOfOptionalHeader
long section_table = pe_offset+opt_header+0x18;
@@ -294,6 +309,26 @@ namespace GameRes.Formats
m_section_list = list;
}
void InitNe ()
{
uint ne_offset = m_file.View.ReadUInt32 (0x3C);
int segment_count = m_file.View.ReadUInt16 (ne_offset + 0x1C);
uint seg_table = m_file.View.ReadUInt16 (ne_offset + 0x22) + ne_offset;
int shift = m_file.View.ReadUInt16 (ne_offset + 0x32);
uint last_seg_end = 0;
for (int i = 0; i < segment_count; ++i)
{
uint offset = (uint)m_file.View.ReadUInt16 (seg_table) << shift;
uint size = m_file.View.ReadUInt16 (seg_table+2);
if (offset + size > last_seg_end)
last_seg_end = offset + size;
}
m_overlay.Offset = last_seg_end;
m_overlay.Size = (uint)(m_file.MaxOffset - last_seg_end);
m_section_table = new Dictionary<string, Section>(); // these are empty for 16-bit executables
m_section_list = new List<ImageSection>(); //
}
/// <summary>
/// Helper class for executable file resources access.
/// </summary>