* check if entered URI looks like a directory (not a file) and issue warning in SelectStorageLocationActivity

* check if URI is directory and refuse to delete in IOConnection

src/KeePassLib2Android/Serialization/IOConnection.cs

@@ -519,6 +519,11 @@ namespace KeePassLib.Serialization
 		{
 			RaiseIOAccessPreEvent(ioc, IOAccessType.Delete);
 
+			//in case a user entered a directory instead of a filename, make sure we're never 
+			//deleting their whole WebDAV/FTP content
+			if (ioc.Path.EndsWith("/"))
+				throw new IOException("Delete file does not expect directory URIs.");
+
 			if(ioc.IsLocalFile()) { File.Delete(ioc.Path); return; }
 
 #if (!KeePassLibSD && !KeePassRT)

src/Kp2aBusinessLogic/Io/AndroidContentStorage.cs

@@ -9,7 +9,10 @@ using KeePassLib.Serialization;
 
 namespace keepass2android.Io
 {
-	//TODOC,TOTEST, TODO: unimplemented methods?
+	/** FileStorage to work with content URIs
+	 * Supports both "old" system where data is available only temporarily as
+	 * well as the SAF system. Assumes that persistable permissions are "taken" by
+	 * the activity which receives OnActivityResult from the system file picker.*/
 	public class AndroidContentStorage: IFileStorage
 	{
 		private readonly Context _ctx;
@@ -135,10 +138,12 @@ namespace keepass2android.Io
 		private bool TryGetDisplayName(IOConnectionInfo ioc, ref string displayName)
 		{
 			var uri = Android.Net.Uri.Parse(ioc.Path);
-			var cursor = _ctx.ContentResolver.Query(uri, null, null, null, null, null);
-
 			try
 			{
+				var cursor = _ctx.ContentResolver.Query(uri, null, null, null, null, null);
+				try
+				{
+
 					if (cursor != null && cursor.MoveToFirst())
 					{
 						displayName = cursor.GetString(cursor.GetColumnIndex(OpenableColumns.DisplayName));
@@ -156,6 +161,16 @@ namespace keepass2android.Io
 				}
 
 				return false;
+			}
+			catch (Exception e)
+			{
+				Kp2aLog.Log(e.ToString());
+
+				return false;
+			}
+			
+			
+			
 		}
 
 		public string CreateFilePath(string parent, string newFilename)

src/Kp2aBusinessLogic/SelectStorageLocationActivityBase.cs

@@ -258,21 +258,31 @@ namespace keepass2android
 
 		protected abstract void StartFileChooser(string path, int requestCode, bool isForSave);
 
-		protected bool OnOpenButton(String fileName, int requestCode)
+		protected bool OnOpenButton(string fileName, int requestCode, Action dismissDialog)
 		{
 
-
 			IOConnectionInfo ioc = new IOConnectionInfo
 				{
 					Path = fileName
 				};
 
+			int lastSlashPos = fileName.LastIndexOf('/');
+			int lastDotPos = fileName.LastIndexOf('.');
+			if (lastSlashPos >= lastDotPos) //no dot after last slash or == in case neither / nor .
+			{
+				ShowFilenameWarning(fileName, () => { IocSelected(ioc, requestCode); dismissDialog(); }, () => { /* don't do anything, leave dialog open, let user try again*/ });
+				//signal that the dialog should be kept open
+				return false;
+			}
+
 			IocSelected(ioc, requestCode);
 
 			return true;
 
 		}
 
+		protected abstract void ShowFilenameWarning(string fileName, Action onUserWantsToContinue, Action onUserWantsToCorrect);
+
 
 		protected virtual void CopyFile(IOConnectionInfo targetIoc, IOConnectionInfo sourceIoc)
 		{

src/Kp2aUnitTests/Kp2aUnitTests.csproj

@@ -14,12 +14,13 @@
     <AndroidResgenFile>Resources\Resource.Designer.cs</AndroidResgenFile>
     <GenerateSerializationAssemblies>Off</GenerateSerializationAssemblies>
     <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
-    <TargetFrameworkVersion>v4.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.4</TargetFrameworkVersion>
     <AndroidSupportedAbis>armeabi,armeabi-v7a,x86</AndroidSupportedAbis>
     <AndroidStoreUncompressedFileExtensions />
     <MandroidI18n />
     <JavaMaximumHeapSize />
     <JavaOptions />
+    <AndroidUseLatestPlatformSdk />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -101,7 +102,7 @@
       <Name>KeePassLib2Android</Name>
     </ProjectReference>
     <ProjectReference Include="..\Kp2aBusinessLogic\Kp2aBusinessLogic.csproj">
-      <Project>{53A9CB7F-6553-4BC0-B56B-9410BB2E59AA}</Project>
+      <Project>{53a9cb7f-6553-4bc0-b56b-9410bb2e59aa}</Project>
       <Name>Kp2aBusinessLogic</Name>
     </ProjectReference>
     <ProjectReference Include="..\KP2AKdbLibraryBinding\KP2AKdbLibraryBinding.csproj">

src/Kp2aUnitTests/MainActivity.cs

@@ -23,7 +23,7 @@ namespace Kp2aUnitTests
 			//runner.AddTests(typeof(TestLoadDb).GetMethod("TestLoadKdb1WithKeyfileOnly"));
 
 			
-			//runner.AddTests(new List<Type> { typeof(TestSelectStorageLocation) });
+			runner.AddTests(new List<Type> { typeof(TestSelectStorageLocation) });
 			//runner.AddTests(new List<Type> { typeof(TestSynchronizeCachedDatabase)});
 			//runner.AddTests(typeof(TestLoadDb).GetMethod("LoadErrorWithCertificateTrustFailure"));
 			//runner.AddTests(typeof(TestLoadDb).GetMethod("LoadWithAcceptedCertificateTrustFailure"));
@@ -36,7 +36,7 @@ namespace Kp2aUnitTests
 			//runner.AddTests(typeof(TestSaveDb).GetMethod("TestLoadAndSave_TestIdenticalFiles_kdb"));
 			//runner.AddTests(typeof(TestSaveDb).GetMethod("TestCreateSaveAndLoad_TestIdenticalFiles_kdb"));
 			
-			runner.AddTests(typeof(TestSaveDb).GetMethod("TestSaveTwice_kdb"));
+		//	runner.AddTests(typeof(TestSaveDb).GetMethod("TestSaveTwice_kdb"));
 			
 			//runner.AddTests(typeof(TestLoadDb).GetMethod("LoadAndSaveFromRemote1And1Ftp"));
 			//runner.AddTests(typeof(TestLoadDb).GetMethod("TestLoadKdbpWithPasswordOnly"));

src/Kp2aUnitTests/Properties/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
-	<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />
+	<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" />
 	<application></application>
 </manifest>

src/Kp2aUnitTests/TestSelectStorageLocation.cs

@@ -225,6 +225,12 @@ namespace Kp2aUnitTests
 			_userAction = new SelectFileAction(isForSave, browseRequestCode, protocolId, this);
 		}
 
+		protected override void ShowFilenameWarning(string fileName, Action onUserWantsToContinue, Action onUserWantsToCorrect)
+		{
+			_userAction = new ShowAlertDialogAction("filenameWarning", delegate { onUserWantsToContinue(); }, 
+				delegate { onUserWantsToCorrect(); });
+		}
+
 		public void HandleActivityResult(int requestCode, Result resultCode, Intent data)
 		{
 			OnActivityResult(requestCode, resultCode, data);
@@ -281,7 +287,7 @@ namespace Kp2aUnitTests
 
 		private void PressOpenButton(string path, int browseRequestCode)
 		{
-			OnOpenButton(path, browseRequestCode);
+			OnOpenButton(path, browseRequestCode, () => { });
 		}
 
 
@@ -523,6 +529,48 @@ namespace Kp2aUnitTests
 
 		}
 
+		[TestMethod]
+		public void TestManualSelectWithDirectoryCancel()
+		{
+			var testee = CreateTestee();
+			var action = (TestControllableSelectStorageLocationActivity.FileStorageSelectionAction)testee._userAction;
+			action.ReturnProtocol("ftp");
+
+			Assert.IsNull(testee._result); //no result yet
+
+			var action2 = (TestControllableSelectStorageLocationActivity.SelectFileAction)testee._userAction;
+			string path = "ftp://crocoll.net/";
+			action2.PerformManualFileSelect(path);
+
+			Assert.IsNull(testee._result);
+
+			var action3 = (TestControllableSelectStorageLocationActivity.ShowAlertDialogAction) testee._userAction;
+			action3.Ok();
+			Assert.IsTrue((bool)testee._result);
+			Assert.AreEqual(testee._resultIoc.Path, path);
+
+		}
+
+
+		[TestMethod]
+		public void TestManualSelectWithDirectory()
+		{
+			var testee = CreateTestee();
+			var action = (TestControllableSelectStorageLocationActivity.FileStorageSelectionAction)testee._userAction;
+			action.ReturnProtocol("ftp");
+
+			Assert.IsNull(testee._result); //no result yet
+
+			var action2 = (TestControllableSelectStorageLocationActivity.SelectFileAction)testee._userAction;
+			string path = "ftp://crocoll.net/";
+			action2.PerformManualFileSelect(path);
+
+			Assert.IsNull(testee._result);
+
+			var action3 = (TestControllableSelectStorageLocationActivity.ShowAlertDialogAction)testee._userAction;
+			action3.Cancel();
+			
+		}
 		[TestMethod]
 		public void TestCancelManualSelect()
 		{

src/keepass2android/CreateDatabaseActivity.cs

@@ -441,7 +441,7 @@ namespace keepass2android
 			return filename;
 		}
 
-		private bool OnCreateButton(string filename)
+		private bool OnCreateButton(string filename, Dialog dialog)
 		{
 			// Make sure file name exists
 			if (filename.Length == 0)

src/keepass2android/ExportDatabaseActivity.cs

@@ -144,7 +144,7 @@ namespace keepass2android
 			get { return 0; }
 		}
 
-		private bool OnCreateButton(string filename)
+		private bool OnCreateButton(string filename, Dialog dialog)
 		{
 			if (filename.Length == 0)
 			{

src/keepass2android/Resources/values/strings.xml

@@ -530,6 +530,9 @@
 
 	<string name="PreviewWarning">Please note! This is a preview release and might come with some flaws! If you experience *anything* unexpected, please let me know (on Codeplex or by email).</string>
 	
+	<string name="Continue">Continue</string>
+	<string name="NoFilenameWarning">The URI you have entered does not look like a filename. Are you sure this is a valid file?</string>
+
 	<string name="ChangeLog_0_9_7b">
 		Version 0.9.7b\n
 		* updated translations\n

src/keepass2android/SelectStorageLocationActivity.cs

@@ -100,9 +100,9 @@ namespace keepass2android
 								if (defaultPath.StartsWith("sftp://"))
 									Util.ShowSftpDialog(this, filename => OnReceivedSftpData(filename, browseRequestCode, isForSave), ReturnCancel);
 								else
-									//todo oncreate nur wenn for save?
-									Util.ShowFilenameDialog(this, filename => OnOpenButton(filename, browseRequestCode),
-									                        filename => OnOpenButton(filename, browseRequestCode),
+									Util.ShowFilenameDialog(this, 
+										!isForSave ? delegate(string filename, Dialog dialog) { return OnOpenButton(filename, browseRequestCode, dialog.Dismiss); } : (Func<string, Dialog, bool>) null,
+										isForSave ? delegate(string filename, Dialog dialog) { return OnOpenButton(filename, browseRequestCode, dialog.Dismiss); } : (Func<string, Dialog, bool>) null,
 									                        ReturnCancel, false, defaultPath, GetString(Resource.String.enter_filename_details_url),
 									                        browseRequestCode);
 							});
@@ -224,7 +224,17 @@ namespace keepass2android
 		
 		}
 
+		protected override void ShowFilenameWarning(string fileName, Action onUserWantsToContinue, Action onUserWantsToCorrect)
+		{
+			new AlertDialog.Builder(this)
+					.SetPositiveButton(Resource.String.Continue, delegate { onUserWantsToContinue(); } )
+					.SetMessage(Resource.String.NoFilenameWarning)
+					.SetCancelable(false)
+					.SetNegativeButton(Android.Resource.String.Cancel, delegate { onUserWantsToCorrect(); })
+					.Create()
+					.Show();
 			
+		}
 
 
 		public void OnDismiss(IDialogInterface dialog)

src/keepass2android/Utils/Util.cs

@@ -335,7 +335,7 @@ namespace keepass2android
 			}
 		}
 
-		public static void ShowFilenameDialog(Activity activity, FileSelectedHandler onOpen, FileSelectedHandler onCreate, Action onCancel, bool showBrowseButton, string defaultFilename, string detailsText, int requestCodeBrowse)
+		public static void ShowFilenameDialog(Activity activity, Func<string, Dialog, bool> onOpen, Func<string, Dialog, bool> onCreate, Action onCancel, bool showBrowseButton, string defaultFilename, string detailsText, int requestCodeBrowse)
 		{
 			AlertDialog.Builder builder = new AlertDialog.Builder(activity);
 			builder.SetView(activity.LayoutInflater.Inflate(Resource.Layout.file_selection_filename, null));
@@ -362,7 +362,7 @@ namespace keepass2android
 				openButton.Click += (sender, args) =>
 					{
 						String fileName = ((EditText) dialog.FindViewById(Resource.Id.file_filename)).Text;
-						if (onOpen(fileName))
+						if (onOpen(fileName, dialog))
 							dialog.Dismiss();
 					};
 
@@ -371,7 +371,7 @@ namespace keepass2android
 				createButton.Click += (sender, args) =>
 				{
 					String fileName = ((EditText)dialog.FindViewById(Resource.Id.file_filename)).Text;
-					if (onCreate(fileName))
+					if (onCreate(fileName, dialog))
 						dialog.Dismiss();
 				};