implemented Marble scripts decryption.

ArcFormats/ArcFormats.csproj

@@ -216,6 +216,9 @@
       <SubType>Code</SubType>
       <DependentUpon>WidgetLPK.xaml</DependentUpon>
     </Compile>
+    <Compile Include="WidgetMBL.xaml.cs">
+      <DependentUpon>WidgetMBL.xaml</DependentUpon>
+    </Compile>
     <Compile Include="WidgetNOA.xaml.cs">
       <DependentUpon>WidgetNOA.xaml</DependentUpon>
     </Compile>
@@ -320,6 +323,10 @@
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
     </Page>
+    <Page Include="WidgetMBL.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="WidgetNOA.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>

ArcFormats/ArcMBL.cs

@@ -28,10 +28,28 @@ using System.Collections.Generic;
 using System.ComponentModel.Composition;
 using System.IO;
 using System.Linq;
+using GameRes.Formats.Properties;
+using GameRes.Formats.Strings;
 using GameRes.Utility;
 
 namespace GameRes.Formats.Marble
 {
+    public class MblOptions : ResourceOptions
+    {
+        public string PassPhrase;
+    }
+
+    public class MblArchive : ArcFile
+    {
+        public readonly byte[] Key;
+
+        public MblArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, string password)
+            : base (arc, impl, dir)
+        {
+            Key = Encodings.cp932.GetBytes (password);
+        }
+    }
+
     [Export(typeof(ArchiveFormat))]
     public class MblOpener : ArchiveFormat
     {
@@ -64,6 +82,7 @@ namespace GameRes.Formats.Marble
                 return null;
             try
             {
+                bool contains_scripts = false;
                 var dir = new List<Entry> (count);
                 for (int i = 0; i < count; ++i)
                 {
@@ -79,13 +98,22 @@ namespace GameRes.Formats.Marble
                     name = name.ToLowerInvariant();
                     index_offset += (uint)filename_len;
                     uint offset = file.View.ReadUInt32 (index_offset);
-                    var entry = new AutoEntry (name, () => {
+                    Entry entry;
-                        uint signature = file.View.ReadUInt32 (offset);
+                    if (name.EndsWith (".s"))
-                        var res = FormatCatalog.Instance.LookupSignature (signature);
+                    {
-                        if (!res.Any() && 0x4259 == (0xffff & signature))
+                        entry = new Entry { Name = name, Type = "script" };
-                            res = FormatCatalog.Instance.ImageFormats.Where (x => x.Tag == "PRS");
+                        contains_scripts = true;
-                        return res.FirstOrDefault();
+                    }
-                    });
+                    else
+                    {
+                        entry = new AutoEntry (name, () => {
+                            uint signature = file.View.ReadUInt32 (offset);
+                            var res = FormatCatalog.Instance.LookupSignature (signature);
+                            if (!res.Any() && 0x4259 == (0xffff & signature))
+                                res = FormatCatalog.Instance.ImageFormats.Where (x => x.Tag == "PRS");
+                            return res.FirstOrDefault();
+                        });
+                    }
                     entry.Offset = offset;
                     entry.Size = file.View.ReadUInt32 (index_offset+4);
                     if (offset < index_size || !entry.CheckPlacement (file.MaxOffset))
@@ -95,6 +123,12 @@ namespace GameRes.Formats.Marble
                 }
                 if (0 == dir.Count)
                     return null;
+                if (contains_scripts)
+                {
+                    var options = Query<MblOptions> ("Archive contains encrypted scripts.\nChoose encryption scheme or enter a passphrase.");
+                    if (options.PassPhrase.Length > 0)
+                        return new MblArchive (file, this, dir, options.PassPhrase);
+                }
                 return new ArcFile (file, this, dir);
             }
             catch
@@ -102,5 +136,44 @@ namespace GameRes.Formats.Marble
                 return null;
             }
         }
+
+        public static Dictionary<string, string> KnownKeys = new Dictionary<string, string> {
+            { arcStrings.ArcDefault,    "" },
+            { "Chikatetsu Fuusa Jiken", "naze" }
+        };
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            if (entry.Type != "script" || !entry.Name.EndsWith (".s"))
+                return arc.File.CreateStream (entry.Offset, entry.Size);
+            var marc = arc as MblArchive;
+            var data = new byte[entry.Size];
+            arc.File.View.Read (entry.Offset, data, 0, entry.Size);
+            if (null == marc || null == marc.Key)
+            {
+                for (int i = 0; i < data.Length; ++i)
+                {
+                    data[i] = (byte)-data[i];
+                }
+            }
+            else
+            {
+                for (int i = 0; i < data.Length; ++i)
+                {
+                    data[i] ^= marc.Key[i % marc.Key.Length];
+                }
+            }
+            return new MemoryStream (data);
+        }
+
+        public override ResourceOptions GetDefaultOptions ()
+        {
+            return new MblOptions { PassPhrase = Settings.Default.MBLPassPhrase };
+        }
+
+        public override object GetAccessWidget ()
+        {
+            return new GUI.WidgetMBL();
+        }
     }
 }

ArcFormats/Properties/Settings.Designer.cs

@@ -357,5 +357,17 @@ namespace GameRes.Formats.Properties {
                 this["DPKLastScheme"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("")]
+        public string MBLPassPhrase {
+            get {
+                return ((string)(this["MBLPassPhrase"]));
+            }
+            set {
+                this["MBLPassPhrase"] = value;
+            }
+        }
     }
 }

ArcFormats/Properties/Settings.settings

@@ -86,5 +86,8 @@
     <Setting Name="DPKLastScheme" Type="System.String" Scope="User">
       <Value Profile="(Default)" />
     </Setting>
+    <Setting Name="MBLPassPhrase" Type="System.String" Scope="User">
+      <Value Profile="(Default)" />
+    </Setting>
   </Settings>
 </SettingsFile>

ArcFormats/Strings/arcStrings.Designer.cs

@@ -279,6 +279,15 @@ namespace GameRes.Formats.Strings {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Archive contains encrypted scripts.Choose encryption scheme or enter a passphrase..
+        /// </summary>
+        public static string MBLNotice {
+            get {
+                return ResourceManager.GetString("MBLNotice", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Adding file.
         /// </summary>

ArcFormats/Strings/arcStrings.resx

@@ -318,4 +318,8 @@ Enter archive encryption key.</value>
   <data name="KCAPDefault" xml:space="preserve">
     <value>Default</value>
   </data>
+  <data name="MBLNotice" xml:space="preserve">
+      <value>Archive contains encrypted scripts.
+Choose encryption scheme or enter a passphrase.</value>
+  </data>
 </root>

ArcFormats/Strings/arcStrings.ru-RU.resx

@@ -174,6 +174,10 @@
   <data name="LabelScheme" xml:space="preserve">
     <value>Вариант</value>
   </data>
+  <data name="MBLNotice" xml:space="preserve">
+    <value>Архив содержит зашифрованные скрипты.
+Выберите способ шифрования или введите текстовый пароль.</value>
+  </data>
   <data name="MsgAddingFile" xml:space="preserve">
     <value>Добавляется файл</value>
   </data>

ArcFormats/WidgetMBL.xaml

@@ -0,0 +1,17 @@
+<Grid x:Class="GameRes.Formats.GUI.WidgetMBL"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:s="clr-namespace:GameRes.Formats.Strings"
+      xmlns:p="clr-namespace:GameRes.Formats.Properties"
+      xmlns:m="clr-namespace:GameRes.Formats.Marble">
+    <Grid.RowDefinitions>
+        <RowDefinition/>
+        <RowDefinition/>
+    </Grid.RowDefinitions>
+    <ComboBox Name="EncScheme" Grid.Row="0" Margin="0,3,0,0" Width="160" HorizontalAlignment="Right"
+              ItemsSource="{Binding Source={x:Static m:MblOpener.KnownKeys}, Mode=OneWay}"
+              DisplayMemberPath="Key" SelectedValuePath="Value"
+              SelectedValue="{Binding ElementName=PassPhrase, Path=Text, Mode=TwoWay}"/>
+    <TextBox Name="PassPhrase" Grid.Row="1" Margin="0,3,0,3" Width="{Binding ElementName=EncScheme, Path=ActualWidth}" HorizontalAlignment="Right"
+             Text="{Binding Source={x:Static p:Settings.Default}, Path=MBLPassPhrase, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
+</Grid>

ArcFormats/WidgetMBL.xaml.cs

@@ -0,0 +1,15 @@
+using System.Windows.Controls;
+
+namespace GameRes.Formats.GUI
+{
+    /// <summary>
+    /// Interaction logic for WidgetMBL.xaml
+    /// </summary>
+    public partial class WidgetMBL : Grid
+    {
+        public WidgetMBL ()
+        {
+            InitializeComponent ();
+        }
+    }
+}

ArcFormats/app.config

@@ -88,6 +88,9 @@
             <setting name="DPKLastScheme" serializeAs="String">
                 <value />
             </setting>
+            <setting name="MBLPassPhrase" serializeAs="String">
+                <value />
+            </setting>
         </GameRes.Formats.Properties.Settings>
     </userSettings>
 <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/></startup></configuration>