From 473a3700a72396247b4858ac5d0e84ad66bdb885 Mon Sep 17 00:00:00 2001
From: Geoffroy Bonneville <geogeob@hotmail.com>
Date: Thu, 2 Nov 2017 11:30:03 +0100
Subject: [PATCH] Implements encryption algorithm change Implements compression
 algorithm change

---
 ModernKeePass/Common/DatabaseHelper.cs        | 25 +++++++------
 .../SettingsDatabasePage.xaml                 |  7 +++-
 .../ViewModels/SettingsDatabaseVm.cs          | 35 +++++++++++++++++++
 3 files changed, 56 insertions(+), 11 deletions(-)

diff --git a/ModernKeePass/Common/DatabaseHelper.cs b/ModernKeePass/Common/DatabaseHelper.cs
index 4388974..fe6a42d 100644
--- a/ModernKeePass/Common/DatabaseHelper.cs
+++ b/ModernKeePass/Common/DatabaseHelper.cs
@@ -1,9 +1,9 @@
 using System;
 using Windows.Storage;
-using Windows.UI.Xaml;
 using Windows.UI.Xaml.Controls;
 using ModernKeePass.ViewModels;
 using ModernKeePassLib;
+using ModernKeePassLib.Cryptography.Cipher;
 using ModernKeePassLib.Interfaces;
 using ModernKeePassLib.Keys;
 using ModernKeePassLib.Serialization;
@@ -33,7 +33,7 @@ namespace ModernKeePass.Common
                 _pwDatabase.RecycleBinUuid = _recycleBin.IdUuid;
             }
         }
-
+        
         public DatabaseStatus Status { get; private set; } = DatabaseStatus.Closed;
         public string Name => DatabaseFile?.Name;
         
@@ -52,7 +52,19 @@ namespace ModernKeePass.Common
                 Status = DatabaseStatus.Opening;
             }
         }
-        
+
+        public PwUuid DataCipher
+        {
+            get { return _pwDatabase.DataCipherUuid; }
+            internal set { _pwDatabase.DataCipherUuid = value; }
+        }
+
+        public PwCompressionAlgorithm CompressionAlgorithm
+        {
+            get { return _pwDatabase.Compression; }
+            set { _pwDatabase.Compression = value; }
+        }
+
         /// <summary>
         /// Open a KeePass database
         /// </summary>
@@ -107,13 +119,6 @@ namespace ModernKeePass.Common
         public void Save()
         {
             if (_pwDatabase == null || !_pwDatabase.IsOpen) return;
-            // Commit real changes to DB
-            /*var app = (App) Application.Current;
-            foreach (var entity in app.PendingDeleteEntities)
-            {
-                entity.Value.CommitDelete();
-            }
-            app.PendingDeleteEntities.Clear();*/
             _pwDatabase.Save(new NullStatusLogger());
         }
 
diff --git a/ModernKeePass/Pages/SettingsPageFrames/SettingsDatabasePage.xaml b/ModernKeePass/Pages/SettingsPageFrames/SettingsDatabasePage.xaml
index 8357e3e..7087abc 100644
--- a/ModernKeePass/Pages/SettingsPageFrames/SettingsDatabasePage.xaml
+++ b/ModernKeePass/Pages/SettingsPageFrames/SettingsDatabasePage.xaml
@@ -2,13 +2,14 @@
     x:Class="ModernKeePass.Pages.SettingsDatabasePage"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:local="using:ModernKeePass.Pages"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:viewModels="using:ModernKeePass.ViewModels" 
     mc:Ignorable="d">
     <Page.Resources>
         <CollectionViewSource x:Name="RecycleBinGroups" Source="{Binding Groups}" />
+        <CollectionViewSource x:Name="Ciphers" Source="{Binding Ciphers}" />
+        <CollectionViewSource x:Name="Compressions" Source="{Binding Compressions}" />
     </Page.Resources>
     <Page.DataContext>
         <viewModels:SettingsDatabaseVm />
@@ -17,5 +18,9 @@
     <StackPanel Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
         <ToggleSwitch Header="Recycle bin" OffContent="Disabled" OnContent="Enabled" IsOn="{Binding HasRecycleBin, Mode=TwoWay}" />
         <ComboBox ItemsSource="{Binding Source={StaticResource RecycleBinGroups}}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" IsEnabled="{Binding HasRecycleBin}" />
+        <TextBlock Text="Encryption Algorithm" FontSize="14" Margin="5,20,0,10" />
+        <ComboBox ItemsSource="{Binding Source={StaticResource Ciphers}}" SelectedIndex="{Binding CipherIndex, Mode=TwoWay}" />
+        <TextBlock Text="Compression Algorithm" FontSize="14" Margin="5,20,0,10" />
+        <ComboBox ItemsSource="{Binding Source={StaticResource Compressions}}" SelectedItem="{Binding CompressionName, Mode=TwoWay}" />
     </StackPanel>
 </Page>
diff --git a/ModernKeePass/ViewModels/SettingsDatabaseVm.cs b/ModernKeePass/ViewModels/SettingsDatabaseVm.cs
index 9069fb4..ff67b3b 100644
--- a/ModernKeePass/ViewModels/SettingsDatabaseVm.cs
+++ b/ModernKeePass/ViewModels/SettingsDatabaseVm.cs
@@ -1,10 +1,13 @@
 using System;
+using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using Windows.Storage;
 using Windows.UI.Xaml;
 using ModernKeePass.Common;
 using ModernKeePass.Interfaces;
+using ModernKeePassLib;
+using ModernKeePassLib.Cryptography.Cipher;
 
 namespace ModernKeePass.ViewModels
 {
@@ -26,6 +29,38 @@ namespace ModernKeePass.ViewModels
 
         public ObservableCollection<GroupVm> Groups { get; set; }
 
+        public IEnumerable<string> Ciphers
+        {
+            get
+            {
+                for (var inx = 0; inx < CipherPool.GlobalPool.EngineCount; inx++)
+                {
+                    yield return CipherPool.GlobalPool[inx].DisplayName;
+                }
+            }
+        }
+
+        public int CipherIndex
+        {
+            get
+            {
+                for (var inx = 0; inx < CipherPool.GlobalPool.EngineCount; ++inx)
+                {
+                    if (CipherPool.GlobalPool[inx].CipherUuid.Equals(_app.Database.DataCipher)) return inx;
+                }
+                return -1;
+            }
+            set { _app.Database.DataCipher = CipherPool.GlobalPool[value].CipherUuid; }
+        }
+
+        public IEnumerable<string> Compressions => Enum.GetNames(typeof(PwCompressionAlgorithm)).Take((int)PwCompressionAlgorithm.Count);
+
+        public string CompressionName
+        {
+            get { return Enum.GetName(typeof(PwCompressionAlgorithm), _app.Database.CompressionAlgorithm); }
+            set { _app.Database.CompressionAlgorithm = (PwCompressionAlgorithm)Enum.Parse(typeof(PwCompressionAlgorithm), value); }
+        }
+
         public ISelectableModel SelectedItem
         {
             get { return Groups.FirstOrDefault(g => g.IsSelected); }