public PcscReaderStatus(PcscContext context, IEnumerable <string> readerNames) : base(new List <PcscReaderState>())
{
Context = context;
foreach (var readerName in readerNames)
{
Items.Add(new PcscReaderState(readerName));
}
_readerStates = (Provider = context.Provider).AllocateReaderStates(Items.Count);
}
public unsafe static string GetReaderGroupNames(this IPcscProvider provider, SCardContext handle, PcscExceptionHandler onException)
{
byte *pGroupNames = null;
var charCount = PcscProvider.SCardAutoAllocate;
try
{
provider.SCardListReaderGroups(handle, &pGroupNames, &charCount).ThrowIfNotSuccess(onException);
return(provider.AllocateString(pGroupNames, charCount));
}
finally
{
if (pGroupNames != null)
{
provider.SCardFreeMemory(handle, pGroupNames).ThrowIfNotSuccess(onException);
}
}
}
public unsafe static string GetReaderNames(this IPcscProvider provider, SCardContext handle, string group, PcscExceptionHandler onException)
{
string readerNames = null;
byte * pReaderNames;
var charCount = PcscProvider.SCardAutoAllocate;
var err = provider.SCardListReaders(handle, group, &pReaderNames, &charCount);
try
{
switch (err)
{
case SCardError.NoReadersAvailable:
// In Windows, it seems to still return a `NULL` character with `SCardError.Success` status even none of reader names is found.
break;
case SCardError.Successs:
/*
* Providers can use ANSI (e.g., WinSCard and pcsc-lite) or Unicode (e.g., WinSCard) for the encoding of characters.
* In ANSI, `charCount` means the byte count of string.
* In Unicode, `charCount` means the number of Unicode characters of string.
*/
readerNames = provider.AllocateString(pReaderNames, charCount);
break;
default:
err.Throw(onException);
break;
}
}
finally
{
if (pReaderNames != null)
{
provider.SCardFreeMemory(handle, pReaderNames).ThrowIfNotSuccess(onException);
}
}
return(readerNames);
}
public Pcsc(IPcscProvider provider)
{
Provider = provider;
}
public PcscContext(IPcscProvider provider)
{
Provider = provider;
}
