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(BinOpener): adjusted sanity checks.

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This commit is contained in:
morkt 2016-01-17 23:34:37 +04:00
parent dc95bd18d4
commit a8491dcbfc
1 changed files with 8 additions and 5 deletions
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13
ArcFormats/Xuse/ArcBIN.cs
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@ -46,22 +46,24 @@ namespace GameRes.Formats.Xuse
public override ArcFile TryOpen (ArcView file)
{
long first_offset = file.View.ReadInt64 (8);
var first_offset = file.View.ReadUInt32 (8);
if (first_offset <= 0x14 || first_offset >= file.MaxOffset || first_offset > int.MaxValue)
return null;
var count = (int)(first_offset - 4) / 0x10;
if (count != 0x100)
int index_size = (int)(first_offset - 4);
var count = index_size / 0x10;
if (count * 0x10 != index_size)
return null;
string base_name = Path.GetFileNameWithoutExtension (file.Name);
uint index_offset = 4;
uint last_offset = 0;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var offset = file.View.ReadInt64 (index_offset+4);
var offset = file.View.ReadUInt32 (index_offset+4);
if (0 == offset)
break;
if (offset < first_offset)
if (offset <= last_offset)
return null;
string name = string.Format ("{0}#{1:D4}", base_name, i);
var entry = new AutoEntry (name, () => {
@ -74,6 +76,7 @@ namespace GameRes.Formats.Xuse
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
last_offset = offset;
index_offset += 0x10;
}
if (0 == dir.Count)