/// <inheritdoc />
/// <summary>
/// List reader groups existing in the system.
/// </summary>
/// <returns>String array with names of available reader groups.</returns>
public IReadOnlyList <string> ListReaderGroups()
{
var multiNullTerminatedBytesArray = WinSCardWrapper.ListReaderGroups(Handle);
return((IReadOnlyList <string>)BinaryHelper.ConvertMultiNullTerminatedStringFromBytesToStringArray(Encoding,
multiNullTerminatedBytesArray));
}
public ConnectionStatus CheckConnectionStatus()
{
var dataConnectionStatus = WinSCardWrapper.GetConnectionStatus(Handle);
ActiveProtocol = dataConnectionStatus.ActiveProtocol;
ActiveCardState = dataConnectionStatus.Status;
return(new ConnectionStatus
{
ActiveProtocol = dataConnectionStatus.ActiveProtocol,
CardAnswerToReset = dataConnectionStatus.CardAnswerToReset,
ReaderAliases =
(IReadOnlyList <string>)BinaryHelper.ConvertMultiNullTerminatedStringFromBytesToStringArray(
Encoding, dataConnectionStatus.ConnectedReaderNames),
Status = dataConnectionStatus.Status
});
}
/// <inheritdoc />
/// <summary>
/// Lists readers within given reader groups.
/// </summary>
/// <param name="readerGroups">Names of the reader groups</param>
/// <returns>String array with names of active readers.</returns>
public IReadOnlyList <string> ListReaders(IReadOnlyList <string> readerGroups)
{
byte[] multiNullTerminatedBytesArray;
try
{
var readerGroupsBytes = readerGroups == null
? null
: BinaryHelper.ConvertMultiNullTerminatedByteArrayFromStringEnumerable(Encoding, readerGroups)
.ToArray();
multiNullTerminatedBytesArray = WinSCardWrapper.ListReaders(Handle, readerGroupsBytes);
}
catch (Win32Exception e) when(e.ErrorCodeEquals(0x8010002E)) // 0x8010002E -> SCARD_E_NO_READERS_AVAILABLE
{
multiNullTerminatedBytesArray = new byte [0];
}
return((IReadOnlyList <string>)BinaryHelper.ConvertMultiNullTerminatedStringFromBytesToStringArray(Encoding,
multiNullTerminatedBytesArray));
}