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(PACKDAT): decrypt scripts.

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This commit is contained in:
morkt 2018-01-29 03:36:30 +04:00
parent a4ba1ecdd5
commit b4e1e41c93
1 changed files with 9 additions and 3 deletions
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12
ArcFormats/ArcPACKDAT.cs
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@ -80,11 +80,12 @@ namespace GameRes.Formats.SystemEpsylon
public override Stream OpenEntry (ArcFile arc, Entry entry) public override Stream OpenEntry (ArcFile arc, Entry entry)
{ {
var pentry = entry as PackDatEntry; var pentry = entry as PackDatEntry;
if (null == pentry || entry.Size < 4 || 0 == (pentry.Flags & 0x10000)) if (null == pentry || entry.Size < 4
|| !(0 != (pentry.Flags & 0x10000) || entry.Name.HasExtension (".s")))
return arc.File.CreateStream (entry.Offset, entry.Size); return arc.File.CreateStream (entry.Offset, entry.Size);
var input = arc.File.View.ReadBytes (entry.Offset, pentry.Size); var input = arc.File.View.ReadBytes (entry.Offset, pentry.Size);
if (input.Length == pentry.Size) if (0 != (pentry.Flags & 0x10000))
{ {
unsafe unsafe
{ {
@ -92,7 +93,7 @@ namespace GameRes.Formats.SystemEpsylon
{ {
uint* encoded = (uint*)buf_raw; uint* encoded = (uint*)buf_raw;
uint key = pentry.Size >> 2; uint key = pentry.Size >> 2;
key = (key << (((int)key & 7) + 8)) ^ key; key ^= key << (((int)key & 7) + 8);
for (uint i = entry.Size / 4; i != 0; --i ) for (uint i = entry.Size / 4; i != 0; --i )
{ {
*encoded ^= key; *encoded ^= key;
@ -102,6 +103,11 @@ namespace GameRes.Formats.SystemEpsylon
} }
} }
} }
if (entry.Name.HasExtension (".s"))
{
for (int i = 0; i < input.Length; ++i)
input[i] ^= 0xFF;
}
return new BinMemoryStream (input, entry.Name); return new BinMemoryStream (input, entry.Name);
} }
} }