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/*
* Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
namespace Tizen.Network.Smartcard
{
static internal class Globals
{
internal const string LogTag = "Tizen.Network.Smartcard";
}
internal class SmartcardManagerImpl : IDisposable
{
private static readonly SmartcardManagerImpl _instance = new SmartcardManagerImpl();
private List<SmartcardReader> _readerList = new List<SmartcardReader>();
private bool disposed = false;
internal static SmartcardManagerImpl Instance
{
get
{
return _instance;
}
}
private SmartcardManagerImpl()
{
initialize();
}
~SmartcardManagerImpl()
{
Dispose(false);
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
private void Dispose(bool disposing)
{
if (disposed)
return;
if (disposing)
{
// Free managed objects.
foreach (SmartcardReader reader in _readerList)
{
reader.Dispose();
_readerList.Remove(reader);
}
}
//Free unmanaged objects
deinitialize();
disposed = true;
}
private void initialize()
{
int ret = Interop.Smartcard.Initialize();
if (ret != (int)SmartcardError.None)
{
Log.Error(Globals.LogTag, "Failed to initialize smartcard, Error - " + (SmartcardError)ret);
SmartcardErrorFactory.ThrowSmartcardException(ret);
}
}
private void deinitialize()
{
int ret = Interop.Smartcard.Deinitialize();
if (ret != (int)SmartcardError.None)
{
Log.Error(Globals.LogTag, "Failed to deinitialize smartcard, Error - " + (SmartcardError)ret);
SmartcardErrorFactory.ThrowSmartcardException(ret);
}
}
internal IEnumerable<SmartcardReader> GetReaders()
{
IntPtr readerPtr;
int len = 0;
int ret = Interop.Smartcard.GetReaders(out readerPtr, out len);
if (ret != (int)SmartcardError.None)
{
Log.Error(Globals.LogTag, "Failed to remove with AP, Error - " + (SmartcardError)ret);
SmartcardErrorFactory.ThrowSmartcardException(ret);
}
for (int i = 0; i < len; i++)
{
int readerID = Marshal.ReadInt32(readerPtr);
SmartcardReader readerItem = new SmartcardReader(readerID);
_readerList.Add(readerItem);
readerPtr += sizeof(int);
}
return _readerList;
}
}
}
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