public override ArcFile TryOpen(ArcView file)
{
if (!file.Name.HasExtension(".ads"))
{
return(null);
}
var arc_name = Path.GetFileNameWithoutExtension(file.Name);
foreach (var key in KnownKeys.Values)
{
using (var arc = new EncryptedViewStream(file, key))
{
uint signature = FormatCatalog.ReadSignature(arc);
if (2 == signature || 4 == signature || 5 == signature)
{
var dir = ReadIndex(arc, key, arc_name);
if (dir != null)
{
return(new AdsArchive(file, this, dir, key));
}
}
}
}
return(null);
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var ads_arc = arc as AdsArchive;
if (null == ads_arc)
{
return(base.OpenEntry(arc, entry));
}
var input = new EncryptedViewStream(ads_arc.File, ads_arc.Key);
return(new StreamRegion(input, entry.Offset, entry.Size));
}
public override ArcFile TryOpen(ArcView file)
{
if (!file.Name.EndsWith(".ads", StringComparison.InvariantCultureIgnoreCase))
{
return(null);
}
foreach (var key in KnownKeys.Values)
{
using (var arc = new EncryptedViewStream(file, key))
{
uint signature = FormatCatalog.ReadSignature(arc);
if (2 == signature || 4 == signature || 5 == signature)
{
var dir = ReadIndex(arc, key);
if (dir != null)
{
return(new AdsArchive(file, this, dir, key));
}
}
}
}
return(null);
}
