From 8bbd18d3f86eaffde6ae0817fcc7f70ee04a27d1 Mon Sep 17 00:00:00 2001
From: Philipp Crocoll <crocoapps@googlemail.com>
Date: Sun, 26 Jan 2014 03:51:55 -0800
Subject: [PATCH] Implemented loading of Keepass 1 (kdb) files. First test
 passed!

---
 src/KeePassLib2Android/IDatabaseLoader.cs     |   2 +
 .../Kp2aBusinessLogic.csproj                  |   9 +-
 src/Kp2aBusinessLogic/database/Database.cs    |   7 ++
 .../database/KdbDatabaseLoader.cs             | 108 ++++++++++++++++--
 .../database/KdbxDatabaseLoader.cs            |   1 +
 src/Kp2aBusinessLogic/database/edit/LoadDB.cs |  15 +--
 src/Kp2aUnitTests/TestLoadDb.cs               |  44 ++++---
 .../keepassdroid/database/PwDatabaseV3.java   |  16 +--
 .../com/keepassdroid/database/PwEntryV3.java  |   6 +-
 .../com/keepassdroid/database/PwGroupId.java  |   3 -
 .../keepassdroid/database/PwGroupIdV3.java    |   2 +-
 .../com/keepassdroid/database/PwGroupV3.java  |  28 +++--
 .../src/com/keepassdroid/database/PwIcon.java |  12 --
 .../keepassdroid/database/PwIconStandard.java |   5 +-
 .../database/load/ImporterV3.java             |  26 ++++-
 15 files changed, 210 insertions(+), 74 deletions(-)
 delete mode 100644 src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIcon.java

diff --git a/src/KeePassLib2Android/IDatabaseLoader.cs b/src/KeePassLib2Android/IDatabaseLoader.cs
index dd9be389..70f5f033 100644
--- a/src/KeePassLib2Android/IDatabaseLoader.cs
+++ b/src/KeePassLib2Android/IDatabaseLoader.cs
@@ -9,5 +9,7 @@ namespace KeePassLib
 		void PopulateDatabaseFromStream(PwDatabase db, CompositeKey key, Stream s, IStatusLogger slLogger);
 
 		byte[] HashOfLastStream { get; }
+
+		bool CanWrite { get;  }
 	}
 }
\ No newline at end of file
diff --git a/src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj b/src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj
index 9c6aaaef..a5272472 100644
--- a/src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj
+++ b/src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj
@@ -20,7 +20,7 @@
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>TRACE;DEBUG;EXCLUDE_TWOFISH;EXCLUDE_KEYBOARD;EXCLUDE_KEYTRANSFORM;INCLUDE_FILECHOOSER;INCLUDE_JAVAFILESTORAGE</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;EXCLUDE_TWOFISH;EXCLUDE_KEYBOARD;EXCLUDE_KEYTRANSFORM;EXCLUDE_FILECHOOSER;EXCLUDE_JAVAFILESTORAGE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
@@ -55,6 +55,9 @@
     <Compile Include="database\CheckDatabaseForChanges.cs" />
     <Compile Include="database\edit\EditGroup.cs" />
     <Compile Include="database\edit\MoveElement.cs" />
+    <Compile Include="database\DatabaseV1.cs" />
+    <Compile Include="database\KdbDatabaseLoader.cs" />
+    <Compile Include="database\KdbxDatabaseLoader.cs" />
     <Compile Include="database\SynchronizeCachedDatabase.cs" />
     <Compile Include="Io\BuiltInFileStorage.cs" />
     <Compile Include="Io\CachingFileStorage.cs" />
@@ -112,6 +115,10 @@
       <Project>{545b4a6b-8bba-4fbe-92fc-4ac060122a54}</Project>
       <Name>KeePassLib2Android</Name>
     </ProjectReference>
+    <ProjectReference Include="..\KP2AKdbLibraryBinding\KP2AKdbLibraryBinding.csproj">
+      <Project>{70d3844a-d9fa-4a64-b205-a84c6a822196}</Project>
+      <Name>KP2AKdbLibraryBinding</Name>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/src/Kp2aBusinessLogic/database/Database.cs b/src/Kp2aBusinessLogic/database/Database.cs
index 2b9a94b7..8353e25f 100644
--- a/src/Kp2aBusinessLogic/database/Database.cs
+++ b/src/Kp2aBusinessLogic/database/Database.cs
@@ -112,8 +112,15 @@ namespace keepass2android
 			Loaded = true;
 			KpDatabase = pwDatabase;
 			SearchHelper = new SearchDbHelper(app);
+
+			CanWrite = databaseLoader.CanWrite;
 		}
 
+		/// <summary>
+		/// Indicates whether it is possible to make changes to this database
+		/// </summary>
+		public bool CanWrite { get; set; }
+
 		protected  virtual void PopulateDatabaseFromStream(PwDatabase pwDatabase, Stream s, IOConnectionInfo iocInfo, CompositeKey compositeKey, ProgressDialogStatusLogger status, IDatabaseLoader databaseLoader)
 		{
 			IFileStorage fileStorage = _app.GetFileStorage(iocInfo);
diff --git a/src/Kp2aBusinessLogic/database/KdbDatabaseLoader.cs b/src/Kp2aBusinessLogic/database/KdbDatabaseLoader.cs
index d282a685..baf067f8 100644
--- a/src/Kp2aBusinessLogic/database/KdbDatabaseLoader.cs
+++ b/src/Kp2aBusinessLogic/database/KdbDatabaseLoader.cs
@@ -1,27 +1,23 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Security.Cryptography;
-using Android.Content;
 using Com.Keepassdroid.Database;
 using Com.Keepassdroid.Database.Exception;
-using Java.Lang;
 using KeePassLib;
 using KeePassLib.Cryptography;
-using KeePassLib.Cryptography.Cipher;
 using KeePassLib.Interfaces;
 using KeePassLib.Keys;
+using KeePassLib.Security;
 using Exception = System.Exception;
+using PwIcon = KeePassLib.PwIcon;
 
 namespace keepass2android
 {
 	class KdbDatabaseLoader: IDatabaseLoader
 	{
-		private Context _ctx;
-
-		public KdbDatabaseLoader(Context ctx)
-		{
-			_ctx = ctx;
-		}
+		private Dictionary<PwUuid, AdditionalGroupData> _groupData = new Dictionary<PwUuid, AdditionalGroupData>();
 
 		public void PopulateDatabaseFromStream(PwDatabase db, CompositeKey key, Stream s, IStatusLogger slLogger)
 		{
@@ -49,6 +45,8 @@ namespace keepass2android
 				var dbv3 = importer.OpenDatabase(hashingStream, password, keyfile);
 
 				db.Name = dbv3.Name;
+				db.RootGroup = ConvertGroup(dbv3.RootGroup);
+				
 			}
 			catch (InvalidPasswordException e) {
 			
@@ -71,6 +69,98 @@ namespace keepass2android
 				throw new Exception("hashing didn't work"); //todo remove
 		}
 
+		private PwGroup ConvertGroup(PwGroupV3 groupV3)
+		{
+			PwGroup pwGroup = new PwGroup(true, false);
+			pwGroup.Name = groupV3.Name;
+			
+			pwGroup.CreationTime = ConvertTime(groupV3.TCreation);
+			pwGroup.LastAccessTime = ConvertTime(groupV3.TLastAccess);
+			pwGroup.LastModificationTime = ConvertTime(groupV3.TLastMod);
+			pwGroup.Expires = !PwGroupV3.NeverExpire.Equals(groupV3.TExpire);
+			if (pwGroup.Expires)
+				pwGroup.ExpiryTime = ConvertTime(groupV3.TExpire);
+
+			if (groupV3.Icon != null)
+				pwGroup.IconId = (PwIcon) groupV3.Icon.IconId;
+			_groupData.Add(pwGroup.Uuid, new AdditionalGroupData
+				{
+					Flags = groupV3.Flags,
+					Id = groupV3.Id.Id
+				});
+
+
+			for (int i = 0; i < groupV3.ChildGroups.Count;i++)
+			{
+				pwGroup.AddGroup(ConvertGroup(groupV3.GetGroupAt(i)), true);
+			}
+			for (int i = 0; i < groupV3.ChildEntries.Count; i++)
+			{
+				var entry = groupV3.GetEntryAt(i);
+				if (entry.IsMetaStream)
+					continue;
+				pwGroup.AddEntry(ConvertEntry(entry), true);
+			}
+			
+			return pwGroup;
+		}
+
+		private PwEntry ConvertEntry(PwEntryV3 entryV3)
+		{
+			PwEntry pwEntry = new PwEntry(false, false);
+			pwEntry.Uuid = new PwUuid(entryV3.Uuid.ToArray());
+			pwEntry.CreationTime = ConvertTime(entryV3.TCreation);
+			pwEntry.LastAccessTime = ConvertTime(entryV3.TLastAccess);
+			pwEntry.LastModificationTime = ConvertTime(entryV3.TLastMod);
+
+			pwEntry.Expires = entryV3.Expires();
+			if (pwEntry.Expires)
+				pwEntry.ExpiryTime = ConvertTime(entryV3.TExpire);
+
+			if (entryV3.Icon != null)
+				pwEntry.IconId = (PwIcon) entryV3.Icon.IconId;
+			SetFieldIfAvailable(pwEntry, PwDefs.TitleField, false, entryV3.Title);
+			SetFieldIfAvailable(pwEntry, PwDefs.UserNameField, false, entryV3.Username);
+			SetFieldIfAvailable(pwEntry, PwDefs.UrlField, false, entryV3.Url);
+			SetFieldIfAvailable(pwEntry, PwDefs.PasswordField, true, entryV3.Password);
+			SetFieldIfAvailable(pwEntry, PwDefs.NotesField, true, entryV3.Additional);
+
+			if (entryV3.GetBinaryData() != null)
+			{
+				pwEntry.Binaries.Set(entryV3.BinaryDesc, new ProtectedBinary(true, entryV3.GetBinaryData()));
+			}
+			return pwEntry;
+		}
+
+		private void SetFieldIfAvailable(PwEntry pwEntry, string fieldName, bool makeProtected, string value)
+		{
+			if (value != null)
+			{
+				pwEntry.Strings.Set(fieldName, new ProtectedString(makeProtected, value));	
+			}
+			
+		}
+
+		private DateTime ConvertTime(PwDate date)
+		{
+			if (date == null)
+				return PwDefs.DtDefaultNow;
+			return JavaTimeToCSharp(date.JDate.Time);
+		}
+
+		private DateTime JavaTimeToCSharp(long javatime)
+		{
+			return new DateTime(1970, 1, 1).AddMilliseconds(javatime);
+
+		}
+
 		public byte[] HashOfLastStream { get; private set; }
+		public bool CanWrite { get { return false; } }
+	}
+
+	internal class AdditionalGroupData	
+	{
+		public int Id { get; set; }
+		public int Flags { get; set; }
 	}
 }
\ No newline at end of file
diff --git a/src/Kp2aBusinessLogic/database/KdbxDatabaseLoader.cs b/src/Kp2aBusinessLogic/database/KdbxDatabaseLoader.cs
index 828471e4..974a76bc 100644
--- a/src/Kp2aBusinessLogic/database/KdbxDatabaseLoader.cs
+++ b/src/Kp2aBusinessLogic/database/KdbxDatabaseLoader.cs
@@ -27,5 +27,6 @@ namespace keepass2android
 		}
 
 		public byte[] HashOfLastStream { get; private set; }
+		public bool CanWrite { get { return true; } }
 	}
 }
\ No newline at end of file
diff --git a/src/Kp2aBusinessLogic/database/edit/LoadDB.cs b/src/Kp2aBusinessLogic/database/edit/LoadDB.cs
index 2bc6f195..2d87f8f6 100644
--- a/src/Kp2aBusinessLogic/database/edit/LoadDB.cs
+++ b/src/Kp2aBusinessLogic/database/edit/LoadDB.cs
@@ -19,7 +19,6 @@ using System;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
-using Android.App;
 using KeePassLib;
 using KeePassLib.Keys;
 using KeePassLib.Serialization;
@@ -33,6 +32,7 @@ namespace keepass2android
 		private readonly string _keyfileOrProvider;
 		private readonly IKp2aApp _app;
 		private readonly bool _rememberKeyfile;
+		IDatabaseLoader _loader;
 		
 		public LoadDb(IKp2aApp app, IOConnectionInfo ioc, Task<MemoryStream> databaseData, CompositeKey compositeKey, String keyfileOrProvider, OnFinish finish): base(finish)
 		{
@@ -68,8 +68,8 @@ namespace keepass2android
 				}
 
 				//ok, try to load the database. Let's start with Kdbx format and retry later if that is the wrong guess:
-				IDatabaseLoader loader = new KdbxDatabaseLoader(KdbpFile.GetFormatToUse(_ioc)); 
-				TryLoad(databaseStream, loader);
+				_loader = new KdbxDatabaseLoader(KdbpFile.GetFormatToUse(_ioc));
+				TryLoad(databaseStream);
 			}
 			catch (KeyFileException)
 			{
@@ -99,7 +99,7 @@ namespace keepass2android
 			
 		}
 
-		private void TryLoad(MemoryStream databaseStream, IDatabaseLoader loader)
+		private void TryLoad(MemoryStream databaseStream)
 		{
 			//create a copy of the stream so we can try again if we get an exception which indicates we should change parameters
 			//This is not optimal in terms of (short-time) memory usage but is hard to avoid because the Keepass library closes streams also in case of errors.
@@ -112,14 +112,15 @@ namespace keepass2android
 			//now let's go:
 			try
 			{
-				_app.LoadDatabase(_ioc, workingCopy, _compositeKey, StatusLogger, loader);
+				_app.LoadDatabase(_ioc, workingCopy, _compositeKey, StatusLogger, _loader);
 				SaveFileData(_ioc, _keyfileOrProvider);
 				Kp2aLog.Log("LoadDB OK");
 				Finish(true);
 			}
 			catch (OldFormatException)
 			{
-				TryLoad(databaseStream, new KdbDatabaseLoader(Application.Context));
+				_loader = new KdbDatabaseLoader();
+				TryLoad(databaseStream);
 			}
 			catch (InvalidCompositeKeyException)
 			{
@@ -131,7 +132,7 @@ namespace keepass2android
 					//retry without password:
 					_compositeKey.RemoveUserKey(passwordKey);
 					//retry:
-					TryLoad(databaseStream, loader);
+					TryLoad(databaseStream);
 				}
 				else throw;
 			}
diff --git a/src/Kp2aUnitTests/TestLoadDb.cs b/src/Kp2aUnitTests/TestLoadDb.cs
index 46ee49c6..cde1436d 100644
--- a/src/Kp2aUnitTests/TestLoadDb.cs
+++ b/src/Kp2aUnitTests/TestLoadDb.cs
@@ -2,6 +2,7 @@
 using System.IO;
 using System.Linq;
 using Android.App;
+using KeePassLib;
 using KeePassLib.Serialization;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using keepass2android;
@@ -14,7 +15,15 @@ namespace Kp2aUnitTests
 	{
 		private void RunLoadTest(string filenameWithoutDir, string password, string keyfile)
 		{
-			Android.Util.Log.Debug("KP2ATest", "Starting for " + filenameWithoutDir+" with " + password+"/"+keyfile);
+			var app = PerformLoad(filenameWithoutDir, password, keyfile);
+
+			Assert.AreEqual(6,app.GetDb().KpDatabase.RootGroup.Groups.Count());
+			Assert.AreEqual(2,app.GetDb().KpDatabase.RootGroup.Entries.Count());
+		}
+
+		private IKp2aApp PerformLoad(string filenameWithoutDir, string password, string keyfile)
+		{
+			Android.Util.Log.Debug("KP2ATest", "Starting for " + filenameWithoutDir + " with " + password + "/" + keyfile);
 
 			IKp2aApp app = new TestKp2aApp();
 			app.CreateNewDatabase();
@@ -22,40 +31,43 @@ namespace Kp2aUnitTests
 			var key = CreateKey(password, keyfile);
 			string loadErrorMessage = "";
 
-			LoadDb task = new LoadDb(app, new IOConnectionInfo { Path = TestDbDirectory+filenameWithoutDir }, null,
-				key, keyfile, new ActionOnFinish((success, message) =>
-					{
-						loadErrorMessage = message;
-						if (!success)
-							Android.Util.Log.Debug("KP2ATest", "error loading db: " + message);
-						loadSuccesful = success; 		
-					})
+			LoadDb task = new LoadDb(app, new IOConnectionInfo {Path = TestDbDirectory + filenameWithoutDir}, null,
+			                         key, keyfile, new ActionOnFinish((success, message) =>
+				                         {
+					                         loadErrorMessage = message;
+					                         if (!success)
+						                         Android.Util.Log.Debug("KP2ATest", "error loading db: " + message);
+					                         loadSuccesful = success;
+				                         })
 				);
 			ProgressTask pt = new ProgressTask(app, Application.Context, task);
 			Android.Util.Log.Debug("KP2ATest", "Running ProgressTask");
 			pt.Run();
 			pt.JoinWorkerThread();
 			Android.Util.Log.Debug("KP2ATest", "PT.run finished");
-			Assert.IsTrue(loadSuccesful, "didn't succesfully load database :-( "+loadErrorMessage);
-			
-			Assert.AreEqual(6,app.GetDb().KpDatabase.RootGroup.Groups.Count());
-			Assert.AreEqual(2,app.GetDb().KpDatabase.RootGroup.Entries.Count());
+			Assert.IsTrue(loadSuccesful, "didn't succesfully load database :-( " + loadErrorMessage);
+			return app;
 		}
 
-		
-
 
 		[TestMethod]
 		public void TestLoadWithPasswordOnly()
 		{
 			RunLoadTest("passwordonly.kdbx", DefaultPassword, "");
+			
+
 		}
 
 
 		[TestMethod]
 		public void TestLoadKdb1()
 		{
-			RunLoadTest("test1.kdb", "12345", "");
+			var app = PerformLoad("keepass.kdb", "test", "");
+
+			//contents of the kdb file are a little different because the root group cannot have entries
+			Assert.AreEqual(6, app.GetDb().KpDatabase.RootGroup.Groups.Count());
+			PwGroup generalGroup = app.GetDb().KpDatabase.RootGroup.Groups.Single(g => g.Name == "General");
+			Assert.AreEqual(2, generalGroup.Entries.Count());
 		}
 
 		[TestMethod]
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwDatabaseV3.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwDatabaseV3.java
index c069a8b3..a6f924fd 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwDatabaseV3.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwDatabaseV3.java
@@ -310,7 +310,7 @@ public class PwDatabaseV3 {
 	 *            ID number to check for
 	 * @return True if the ID is used, false otherwise
 	 */
-	protected boolean isGroupIdUsed(PwGroupId id) {
+	protected boolean isGroupIdUsed(PwGroupIdV3 id) {
 		List<PwGroupV3> groups = getGroups();
 		
 		for (int i = 0; i < groups.size(); i++) {
@@ -382,9 +382,9 @@ public class PwDatabaseV3 {
 		groups = grp;
 	}
 
-	public List<PwGroupV3> getGrpRoots() {
+	public ArrayList<PwGroupV3> getGrpRoots() {
 		int target = 0;
-		List<PwGroupV3> kids = new ArrayList<PwGroupV3>();
+		ArrayList<PwGroupV3> kids = new ArrayList<PwGroupV3>();
 		for (int i = 0; i < groups.size(); i++) {
 			PwGroupV3 grp = (PwGroupV3) groups.get(i);
 			if (grp.level == target)
@@ -404,10 +404,10 @@ public class PwDatabaseV3 {
 		return -1;
 	}
 
-	public List<PwGroupV3> getGrpChildren(PwGroupV3 parent) {
+	public ArrayList<PwGroupV3> getGrpChildren(PwGroupV3 parent) {
 		int idx = groups.indexOf(parent);
 		int target = parent.level + 1;
-		List<PwGroupV3> kids = new ArrayList<PwGroupV3>();
+		ArrayList<PwGroupV3> kids = new ArrayList<PwGroupV3>();
 		while (++idx < groups.size()) {
 			PwGroupV3 grp = (PwGroupV3) groups.get(idx);
 			if (grp.level < target)
@@ -418,8 +418,8 @@ public class PwDatabaseV3 {
 		return kids;
 	}
 
-	public List<PwEntryV3> getEntries(PwGroupV3 parent) {
-		List<PwEntryV3> kids = new ArrayList<PwEntryV3>();
+	public ArrayList<PwEntryV3> getEntries(PwGroupV3 parent) {
+		ArrayList<PwEntryV3> kids = new ArrayList<PwEntryV3>();
 		/*
 		 * for( Iterator i = entries.iterator(); i.hasNext(); ) { PwEntryV3 ent
 		 * = (PwEntryV3)i.next(); if( ent.groupId == parent.groupId ) kids.add(
@@ -443,7 +443,7 @@ public class PwDatabaseV3 {
 			PwGroupV3 root = new PwGroupV3();
 			rootGroup = root;
 
-			List<PwGroupV3> rootChildGroups = getGrpRoots();
+			ArrayList<PwGroupV3> rootChildGroups = getGrpRoots();
 			root.setGroups(rootChildGroups);
 			root.childEntries = new ArrayList<PwEntryV3>();
 			root.level = -1;
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwEntryV3.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwEntryV3.java
index fc456444..8e93b280 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwEntryV3.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwEntryV3.java
@@ -90,10 +90,10 @@ protected static final String PMS_TAN_ENTRY = "<TAN>";
 	
 	
 	
-	public PwIcon getIcon() {
+	public PwIconStandard getIcon() {
 		return icon;
 	}
-	
+
 	public boolean isTan() {
 		return getTitle().equals(PMS_TAN_ENTRY) && (getUsername().length() > 0);
 	}
@@ -148,7 +148,7 @@ protected static final String PMS_TAN_ENTRY = "<TAN>";
 	public int              groupId;
 	public 	String 			username;
 	private byte[]          password;
-	private byte[]          uuid;
+	public byte[]          uuid;
 	public String title;
 	public String url;
 	public String additional;
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupId.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupId.java
index 79395932..8f7112b7 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupId.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupId.java
@@ -1,5 +1,2 @@
 package com.keepassdroid.database;
 
-public abstract class PwGroupId {
-
-}
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupIdV3.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupIdV3.java
index 7090e6bc..1c69d8f4 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupIdV3.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupIdV3.java
@@ -19,7 +19,7 @@
  */
 package com.keepassdroid.database;
 
-public class PwGroupIdV3 extends PwGroupId {
+public class PwGroupIdV3 {
 
 	private int id;
 	
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupV3.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupV3.java
index 4929528f..4cd7b9d6 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupV3.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwGroupV3.java
@@ -46,17 +46,29 @@ public class PwGroupV3 {
 	public PwGroupV3() {
 	}
 
-	public List<PwGroupV3> childGroups = new ArrayList<PwGroupV3>();
+	//Mono for Android binding somehow doesn't return List<PwGroupV3> but only IList and casting of the contents doesn't work.
+	//therefore, getGroupAt() must be used in C#, see below
+	public ArrayList<PwGroupV3> childGroups = new ArrayList<PwGroupV3>();
 
-	public List<PwEntryV3> childEntries = new ArrayList<PwEntryV3>();
+	public ArrayList<PwEntryV3> childEntries = new ArrayList<PwEntryV3>();
 	public String name = "";
 	public PwIconStandard icon;
+	
+	 
+	public PwGroupV3 getGroupAt(int i)
+	{
+		return childGroups.get(i);
+	}
+	public PwEntryV3 getEntryAt(int i)
+	{
+		return childEntries.get(i);
+	}
 
-	public PwIcon getIcon() {
+	public PwIconStandard getIcon() {
 		return icon;
 	}
 
-	public void super_initNewGroup(String nm, PwGroupId newId) {
+	public void super_initNewGroup(String nm, PwGroupIdV3 newId) {
 		setId(newId);
 		name = nm;
 	}
@@ -113,7 +125,7 @@ public class PwGroupV3 {
 	/** Used by KeePass internally, don't use */
 	public int flags;
 
-	public void setGroups(List<PwGroupV3> groups) {
+	public void setGroups(ArrayList<PwGroupV3> groups) {
 		childGroups = groups;
 	}
 
@@ -121,11 +133,11 @@ public class PwGroupV3 {
 		return parent;
 	}
 
-	public PwGroupId getId() {
+	public PwGroupIdV3 getId() {
 		return new PwGroupIdV3(groupId);
 	}
 
-	public void setId(PwGroupId id) {
+	public void setId(PwGroupIdV3 id) {
 		PwGroupIdV3 id3 = (PwGroupIdV3) id;
 		groupId = id3.getId();
 	}
@@ -144,7 +156,7 @@ public class PwGroupV3 {
 
 	}
 
-	public void initNewGroup(String nm, PwGroupId newId) {
+	public void initNewGroup(String nm, PwGroupIdV3 newId) {
 		super_initNewGroup(nm, newId);
 
 		Date now = Calendar.getInstance().getTime();
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIcon.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIcon.java
deleted file mode 100644
index 798ad252..00000000
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIcon.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.keepassdroid.database;
-
-public abstract class PwIcon {
-	
-	public boolean isMetaStreamIcon() {
-		return false;
-	}
-	
-	public void writeBytes() {
-	}
-	
-}
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIconStandard.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIconStandard.java
index 74325048..4f970302 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIconStandard.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/PwIconStandard.java
@@ -19,8 +19,8 @@
  */
 package com.keepassdroid.database;
 
-public class PwIconStandard extends PwIcon {
-	public final int iconId;
+public class PwIconStandard  {
+	public /*final*/ int iconId;
 	
 	public static PwIconStandard FIRST = new PwIconStandard(1);
 	
@@ -30,7 +30,6 @@ public class PwIconStandard extends PwIcon {
 		this.iconId = iconId;
 	}
 
-	@Override
 	public boolean isMetaStreamIcon() {
 		return iconId == 0;
 	}
diff --git a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/load/ImporterV3.java b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/load/ImporterV3.java
index 1d233ef5..57d9f734 100644
--- a/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/load/ImporterV3.java
+++ b/src/java/KP2AKdbLibrary/src/com/keepassdroid/database/load/ImporterV3.java
@@ -45,6 +45,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 package com.keepassdroid.database.load;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.UnsupportedEncodingException;
@@ -135,10 +136,29 @@ public class ImporterV3  {
 
 
 		// Load entire file, most of it's encrypted.
-		int fileSize = inStream.available();
-		byte[] filebuf = new byte[fileSize + 16]; // Pad with a blocksize (Twofish uses 128 bits), since Android 4.3 tries to write more to the buffer
-		inStream.read(filebuf, 0, fileSize);
+		
+		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+
+		int nRead;
+		byte[] data = new byte[16384];
+
+		while ((nRead = inStream.read(data, 0, data.length)) != -1) {
+		  buffer.write(data, 0, nRead);
+		}
+
+		buffer.flush();
+		
+		int fileSize = buffer.size();
+		
+	 // Pad with a blocksize (Twofish uses 128 bits), since Android 4.3 tries to write more to the buffer
+		for (int i=0;i<16;i++)
+		{
+			buffer.write(0);
+		}
+
 		inStream.close();
+		
+		byte[] filebuf = buffer.toByteArray();
 
 		// Parse header (unencrypted)
 		if( fileSize < PwDbHeaderV3.BUF_SIZE )