started working on FTP(S) implementation using netftp and introduction of "server accounts"

src/Kp2aBusinessLogic/Io/AndroidContentStorage.cs

@@ -255,6 +255,11 @@ namespace keepass2android.Io
 			}
 			
 		}
+
+		public void ResolveAccount(IOConnectionInfo ioc)
+		{
+			
+		}
 	}
 
 	class AndroidContentWriteTransaction : IWriteTransaction

src/Kp2aBusinessLogic/Io/BuiltInFileStorage.cs

@@ -395,6 +395,11 @@ namespace keepass2android.Io
 			return false;
 		}
 
+		public void ResolveAccount(IOConnectionInfo ioc)
+		{
+			
+		}
+
 		private bool IsLocalFileFlaggedReadOnly(IOConnectionInfo ioc)
 		{
 			try

src/Kp2aBusinessLogic/Io/CachingFileStorage.cs

@@ -563,6 +563,11 @@ namespace keepass2android.Io
 			return _cachedStorage.IsReadOnly(ioc, reason);
 		}
 
+		public void ResolveAccount(IOConnectionInfo ioc)
+		{
+			_cachedStorage.ResolveAccount(ioc);
+		}
+
 		private void StoreFilePath(IOConnectionInfo folderPath, string filename, IOConnectionInfo res)
 		{
 			File.WriteAllText(CachedFilePath(GetPseudoIoc(folderPath, filename)) + ".filepath", res.Path);

src/Kp2aBusinessLogic/Io/IFileStorage.cs

@@ -177,7 +177,12 @@ namespace keepass2android.Io
 		/// </summary>
 		bool IsReadOnly(IOConnectionInfo ioc, OptionalOut<UiStringKey> reason = null );
 
-		
+		/// <summary>
+		/// if the ioc.Path contains a string which refers to a stored account (like FTP account with specific settings),
+		/// this method resolves the path so that it is a path which can be consumed by the file storage "operational" methods (=all other methods)
+		/// </summary>
+		/// <param name="ioc"></param>
+		void ResolveAccount(IOConnectionInfo ioc);
 	}
 
 	public interface IPermissionRequestingFileStorage

src/Kp2aBusinessLogic/Io/JavaFileStorage.cs

@@ -294,6 +294,11 @@ namespace keepass2android.Io
 			return false; //TODO implement. note, however, that we MAY return false even if it's read-only
 		}
 
+		public void ResolveAccount(IOConnectionInfo ioc)
+		{
+			
+		}
+
 		public void OnCreate(IFileStorageSetupActivity activity, Bundle savedInstanceState)
 		{
 			_jfs.OnCreate(((IJavaFileStorageFileStorageSetupActivity)activity), savedInstanceState);

src/Kp2aBusinessLogic/Io/OfflineSwitchableFileStorage.cs

@@ -181,6 +181,11 @@ namespace keepass2android.Io
 			return _baseStorage.IsReadOnly(ioc, reason);
 		}
 
+	public void ResolveAccount(IOConnectionInfo ioc)
+	{
+		_baseStorage.ResolveAccount(ioc);
+	}
+
 	public void OnRequestPermissionsResult(IFileStorageSetupActivity fileStorageSetupActivity, int requestCode,
 		string[] permissions, Permission[] grantResults)
 	{

src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj

@@ -86,6 +86,7 @@
     <Compile Include="Io\IFileStorage.cs" />
     <Compile Include="Io\IoUtil.cs" />
     <Compile Include="Io\JavaFileStorage.cs" />
+    <Compile Include="Io\NetFtpFileStorage.cs" />
     <Compile Include="Io\OfflineSwitchableFileStorage.cs" />
     <Compile Include="Io\SftpFileStorage.cs" />
     <Compile Include="Io\SkyDriveFileStorage.cs" />
@@ -133,6 +134,10 @@
       <Project>{70D3844A-D9FA-4A64-B205-A84C6A822196}</Project>
       <Name>KP2AKdbLibraryBinding</Name>
     </ProjectReference>
+    <ProjectReference Include="..\netftpandroid\System.Net.FtpClient\System.Net.FtpClient.Android.csproj">
+      <Project>{146FD497-BA03-4740-B6C5-5C84EA8FCDE2}</Project>
+      <Name>System.Net.FtpClient.Android</Name>
+    </ProjectReference>
     <ProjectReference Include="..\TwofishCipher\TwofishCipher.csproj">
       <Project>{5CF675A5-9BEE-4720-BED9-D5BF14A2EBF9}</Project>
       <Name>TwofishCipher</Name>