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(XP3): threat non-'File' index records as hashed names.

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added NoCryptTitles to Xp3Scheme.
This commit is contained in:
morkt 2017-02-05 02:28:02 +04:00
parent e0fa7430f2
commit b02b95cbf1
1 changed files with 31 additions and 16 deletions
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47
ArcFormats/KiriKiri/ArcXP3.cs
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@ -71,7 +71,8 @@ namespace GameRes.Formats.KiriKiri
[Serializable]
public class Xp3Scheme : ResourceScheme
{
public Dictionary<string, ICrypt> KnownSchemes;
public IDictionary<string, ICrypt> KnownSchemes;
public ISet<string> NoCryptTitles;
}
// Archive version 1: encrypt file first, then calculate checksum
@ -153,20 +154,7 @@ namespace GameRes.Formats.KiriKiri
if (entry_size < 0)
return null;
dir_offset += 12 + entry_size;
if (0x6E666E68 == entry_signature // "hnfn"
|| 0x6C696D73 == entry_signature // "smil"
|| 0x46696C65 == entry_signature) // "eliF"
{
uint hash = header.ReadUInt32();
int name_size = header.ReadInt16();
entry_size -= 6;
if (name_size * 2 <= entry_size)
{
var filename = new string (header.ReadChars (name_size));
filename_map.Add (hash, filename);
}
}
else if (0x656C6946 == entry_signature) // "File"
if (0x656C6946 == entry_signature) // "File"
{
var entry = new Xp3Entry();
while (entry_size > 0)
@ -262,6 +250,24 @@ namespace GameRes.Formats.KiriKiri
dir.Add (entry);
}
}
else if (entry_size > 7)
{
// 0x6E666E68 == entry_signature // "hnfn"
// 0x6C696D73 == entry_signature // "smil"
// 0x46696C65 == entry_signature // "eliF"
// 0x757A7559 == entry_signature // "Yuzu"
uint hash = header.ReadUInt32();
int name_size = header.ReadInt16();
if (name_size > 0)
{
entry_size -= 6;
if (name_size * 2 <= entry_size)
{
var filename = new string (header.ReadChars (name_size));
filename_map.Add (hash, filename);
}
}
}
NextEntry:
header.BaseStream.Position = dir_offset;
}
@ -740,12 +746,16 @@ NextEntry:
var title = FormatCatalog.Instance.LookupGame (file.Name);
if (string.IsNullOrEmpty (title))
return null;
return GetScheme (title);
ICrypt algorithm;
if (!KnownSchemes.TryGetValue (title, out algorithm) && NoCryptTitles.Contains (title))
algorithm = NoCryptAlgorithm;
return algorithm;
}
static Xp3Scheme KiriKiriScheme = new Xp3Scheme
{
KnownSchemes = new Dictionary<string, ICrypt>(),
NoCryptTitles = new HashSet<string>()
};
public static IDictionary<string, ICrypt> KnownSchemes
@ -753,6 +763,11 @@ NextEntry:
get { return KiriKiriScheme.KnownSchemes; }
}
public static ISet<string> NoCryptTitles
{
get { return KiriKiriScheme.NoCryptTitles; }
}
public override ResourceScheme Scheme
{
get { return KiriKiriScheme; }