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additional sanity checks to reduce false positive detections.

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This commit is contained in:
morkt 2015-07-09 06:53:55 +04:00
parent ea75aa558b
commit 919ef22202
3 changed files with 7 additions and 4 deletions
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2
ArcFormats/ArcCherry.cs
View File

@ -66,6 +66,8 @@ namespace GameRes.Formats.Cherry
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, 0x10);
if (0 == name.Length)
return null;
var offset = base_offset + file.View.ReadUInt32 (index_offset+0x10);
Entry entry;
if (is_grp)

2
ArcFormats/ArcCircus.cs
View File

@ -48,7 +48,7 @@ namespace GameRes.Formats.Circus
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
if (count <= 0 || count > 0xfffff)
if (count <= 1 || count > 0xfffff)
return null;
var dir = ReadIndex (file, count, 0x30);
if (null == dir)

7
ArcFormats/ArcKAAS.cs
View File

@ -35,7 +35,7 @@ namespace GameRes.Formats.KAAS
public class PdOpener : ArchiveFormat
{
public override string Tag { get { return "PD/KAAS"; } }
public override string Description { get { return "KAAS engine resource archive"; } }
public override string Description { get { return "KAAS engine PD resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
@ -100,7 +100,7 @@ namespace GameRes.Formats.KAAS
public class PbOpener : ArchiveFormat
{
public override string Tag { get { return "PB"; } }
public override string Description { get { return "KAAS engine resource archive"; } }
public override string Description { get { return "KAAS engine PB resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
@ -113,6 +113,7 @@ namespace GameRes.Formats.KAAS
var dir = new List<Entry> (count);
int index_offset = 0x10;
bool is_voice = Path.GetFileName (file.Name).Equals ("voice.pb", StringComparison.InvariantCultureIgnoreCase);
int data_offset = index_offset + 8 * count;
for (int i = 0; i < count; ++i)
{
uint offset = file.View.ReadUInt32 (index_offset);
@ -122,7 +123,7 @@ namespace GameRes.Formats.KAAS
else
entry = new Entry { Name = string.Format ("{0:D4}.pb", i), Type = "archive", Offset = offset };
entry.Size = file.View.ReadUInt32 (index_offset + 4);
if (!entry.CheckPlacement (file.MaxOffset))
if (offset < data_offset || !entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 8;