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(CSAF): support different archive keys.

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morkt
2023-09-07 12:02:19 +04:00
parent 10ba6e6986
commit b6ebb7d451
1 changed files with 29 additions and 2 deletions
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31
ArcFormats/FamilyAdvSystem/ArcCSAF.cs
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@@ -2,7 +2,7 @@
//! \date 2019 Jan 01 //! \date 2019 Jan 01
//! \brief Family Adv System resource archive. //! \brief Family Adv System resource archive.
// //
// Copyright (C) 2019 by morkt // Copyright (C) 2019-2023 by morkt
// //
// Permission is hereby granted, free of charge, to any person obtaining a copy // Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to // of this software and associated documentation files (the "Software"), to
@@ -34,6 +34,11 @@ using GameRes.Utility;
namespace GameRes.Formats.FamilyAdvSystem namespace GameRes.Formats.FamilyAdvSystem
{ {
[Serializable]
public class FamilyAdvScheme : ResourceScheme
{
public IDictionary<string, string> KnownKeys;
}
[Export(typeof(ArchiveFormat))] [Export(typeof(ArchiveFormat))]
public class CsafOpener : ArchiveFormat public class CsafOpener : ArchiveFormat
@@ -70,8 +75,9 @@ namespace GameRes.Formats.FamilyAdvSystem
{ {
if (is_encrypted) if (is_encrypted)
{ {
var key = QueryEncryptionKey (file);
file.View.Read (0x20, index, 0, index_size); file.View.Read (0x20, index, 0, index_size);
enc = new CsafEncryption (DefaultKey, DefaultIV); enc = new CsafEncryption (key, DefaultIV);
using (var decryptor = enc.CreateDecryptor (0)) using (var decryptor = enc.CreateDecryptor (0))
using (var enc_names = file.CreateStream (0x20 + index_size, names_size)) using (var enc_names = file.CreateStream (0x20 + index_size, names_size))
using (var dec_names = new InputCryptoStream (enc_names, decryptor)) using (var dec_names = new InputCryptoStream (enc_names, decryptor))
@@ -136,6 +142,27 @@ namespace GameRes.Formats.FamilyAdvSystem
var input = new CsafStream (carc); var input = new CsafStream (carc);
return new StreamRegion (input, entry.Offset, entry.Size); return new StreamRegion (input, entry.Offset, entry.Size);
} }
internal string QueryEncryptionKey (ArcView file)
{
var title = FormatCatalog.Instance.LookupGame (file.Name);
if (string.IsNullOrEmpty (title))
return DefaultKey;
string key;
if (!KnownKeys.TryGetValue (title, out key))
return DefaultKey;
return key;
}
FamilyAdvScheme DefaultScheme = new FamilyAdvScheme { KnownKeys = new Dictionary<string, string>() };
internal IDictionary<string, string> KnownKeys { get { return DefaultScheme.KnownKeys; } }
public override ResourceScheme Scheme
{
get { return DefaultScheme; }
set { DefaultScheme = (FamilyAdvScheme)value; }
}
} }
internal class CsafEncryption : IDisposable internal class CsafEncryption : IDisposable