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(LpkOpener): minor fixes.

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use Binary.Rotate methods;
ignore 'WholeCrypt' flag for "patch.lpk" archives.
This commit is contained in:
morkt 2016-01-06 19:50:43 +04:00
parent 7e4425cb13
commit eac5f21bd6
1 changed files with 16 additions and 17 deletions
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33
ArcFormats/Lucifen/ArcLPK.cs
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@ -93,7 +93,7 @@ namespace GameRes.Formats.Lucifen
public override string Tag { get { return "LPK"; } }
public override string Description { get { return "Lucifen system resource archive"; } }
public override uint Signature { get { return 0x314b504c; } } // 'LPK1'
public override bool IsHierarchic { get { return false; } }
public override bool IsHierarchic { get { return true; } }
public override bool CanCreate { get { return false; } }
[Serializable]
@ -111,7 +111,7 @@ namespace GameRes.Formats.Lucifen
BaseKey = new Key (0xA5B9AC6B, 0x9A639DE5), ContentXor = 0x5d, RotatePattern = 0x31746285,
ImportGameInit = true
};
public static Dictionary<string, EncryptionScheme> KnownSchemes = new Dictionary<string, EncryptionScheme>();
public static Dictionary<string, EncryptionScheme> KnownSchemes = new Dictionary<string, EncryptionScheme> { { "Default", DefaultScheme } };
static Dictionary<string, Dictionary<string, Key>> KnownKeys = new Dictionary<string, Dictionary<string, Key>>();
EncryptionScheme CurrentScheme = DefaultScheme;
@ -141,9 +141,9 @@ namespace GameRes.Formats.Lucifen
{
if (0 == CurrentFileMap.Count)
ImportKeys (file.Name);
if (!CurrentFileMap.TryGetValue (name, out file_key))
return null;
}
if (CurrentFileMap.Count > 0 && !CurrentFileMap.TryGetValue (name, out file_key))
return null;
return Open (basename, file, CurrentScheme, file_key);
}
@ -195,7 +195,7 @@ namespace GameRes.Formats.Lucifen
for (int i = 0; i < data.Length; ++i)
{
int v = data[i] ^ key;
data[i] = (byte)(v >> 4 | v << 4);
data[i] = Binary.RotByteR ((byte)v, 4);
}
}
@ -208,9 +208,8 @@ namespace GameRes.Formats.Lucifen
for (int i = 0; i < length; ++i)
{
encoded[i] ^= key;
pattern = (pattern >> 4) | (pattern << 28);
int cl = (int)(pattern & 0x1f);
key = (key << cl) | (key >> (32-cl));
pattern = Binary.RotR (pattern, 4);
key = Binary.RotL (key, (int)pattern);
}
}
}
@ -224,9 +223,8 @@ namespace GameRes.Formats.Lucifen
for (int i = 0; i < length; ++i)
{
encoded[i] ^= key;
pattern = (pattern << 4) | (pattern >> 28);
int cl = (int)(pattern & 0x1f);
key = (key >> cl) | (key << (32-cl));
pattern = Binary.RotL (pattern, 4);
key = Binary.RotR (key, (int)pattern);
}
}
}
@ -239,8 +237,8 @@ namespace GameRes.Formats.Lucifen
{
key1 ^= basename[e];
key2 ^= basename[b];
key1 = (key1 << 25) | (key1 >> 7);
key2 = (key2 << 7) | (key2 >> 25);
key1 = Binary.RotR (key1, 7);
key2 = Binary.RotL (key2, 7);
}
if (null != key)
{
@ -271,6 +269,8 @@ namespace GameRes.Formats.Lucifen
var dir = reader.Read (index);
if (null == dir)
return null;
if (lpk_info.WholeCrypt && Path.GetFileName (file.Name).Equals ("PATCH.LPK", StringComparison.InvariantCultureIgnoreCase))
lpk_info.WholeCrypt = false;
return new LuciArchive (file, this, dir, scheme, reader.Info);
}
@ -359,7 +359,7 @@ namespace GameRes.Formats.Lucifen
CurrentFileMap.Clear();
var options = Query<LuciOptions> (arcStrings.ArcEncryptedNotice);
if (null == options)
return KnownSchemes["Default"];
return DefaultScheme;
string title = options.Scheme;
if (null == options.Key)
{
@ -378,10 +378,9 @@ namespace GameRes.Formats.Lucifen
var scheme = (LpkScheme)value;
KnownSchemes = scheme.KnownSchemes;
KnownKeys = scheme.KnownKeys;
foreach (var key in KnownSchemes.Keys)
foreach (var key in KnownSchemes.Keys.Where (x => null == KnownSchemes[x]).ToArray())
{
if (null == KnownSchemes[key])
KnownSchemes[key] = DefaultScheme;
KnownSchemes[key] = DefaultScheme;
}
}
}