static const char *listReaders(SCARDCONTEXT ctx, char *readerList, size_t readerListSize,
bool printList, int readerNr)
{
DWORD dwLen = (DWORD) readerListSize;
const char *readerName = NULL;
long ret = SCardListReadersA(ctx, NULL, readerList, &dwLen);
CHECK_PCSC_RET("SCardListReaders", ret);
if (SCARD_S_SUCCESS == ret)
{
if (dwLen < 2)
printf("No reader found, exiting\n");
else
{
if (printList)
printf("Reader list:\n");
int readerCount = 0;
while (readerList[0] != '\0')
{
if (printList)
printf(" %d : %s\n", readerCount, readerList);
if (readerCount == readerNr)
readerName = readerList;
readerList += strlen(readerList) + 1;
readerCount++;
}
}
}
if (readerNr > 0 && NULL == readerName)
printf("ERR: readernr (%d) too high, not enough readers present\n", readerNr);
return readerName;
}
static UINT32 smartcard_ListReadersA_Call(SMARTCARD_DEVICE* smartcard, SMARTCARD_OPERATION* operation, ListReaders_Call* call)
{
UINT32 status;
ListReaders_Return ret;
LPSTR mszReaders = NULL;
DWORD cchReaders = 0;
IRP* irp = operation->irp;
cchReaders = SCARD_AUTOALLOCATE;
status = ret.ReturnCode = SCardListReadersA(operation->hContext, (LPCSTR) call->mszGroups, (LPSTR) &mszReaders, &cchReaders);
ret.msz = (BYTE*) mszReaders;
ret.cBytes = cchReaders;
if (status)
return status;
smartcard_trace_list_readers_return(smartcard, &ret, FALSE);
status = smartcard_pack_list_readers_return(smartcard, irp->output, &ret);
if (status)
return status;
if (mszReaders)
SCardFreeMemory(operation->hContext, mszReaders);
if (call->mszGroups)
free(call->mszGroups);
return ret.ReturnCode;
}
static int testListReadersA(SCARDCONTEXT hContext)
{
int errCount = 0;
char staticBuf[2000];
DWORD staticLen = (DWORD) sizeof(staticBuf);
long ret = SCardListReadersA(hContext, NULL, staticBuf, &staticLen);
CHECK_PCSC_RET("SCardListReadersA(1)", ret);
char *dynBuf = NULL;
DWORD dynLen = 0;
ret = SCardListReadersA(hContext, NULL, dynBuf, &dynLen);
CHECK_PCSC_RET("SCardListReadersA(2)", ret);
dynBuf = (char *) malloc(dynLen);
ret = SCardListReadersA(hContext, NULL, dynBuf, &dynLen);
CHECK_PCSC_RET("SCardListReadersA(1)", ret);
#ifndef MAC_OS_X
char *autoBuf = NULL;
DWORD autoLen = SCARD_AUTOALLOCATE;
ret = SCardListReadersA(hContext, NULL, (char*) &autoBuf, &autoLen);
CHECK_PCSC_RET("SCardListReadersA(3)", ret);
if (staticLen != dynLen || dynLen != autoLen)
{
printf("ERR: SCardListReadersA() returned buffers lengths of different size\n");
errCount++;
}
else if (memcmp(staticBuf, dynBuf, dynLen) != 0 || memcmp(dynBuf, autoBuf, dynLen) != 0)
{
printf("ERR: SCardListReadersA() returned different data\n");
errCount++;
}
ret = SCardFreeMemory(hContext, autoBuf);
CHECK_PCSC_RET("SCardFreeMemory()", ret);
#endif
free(dynBuf);
return errCount;
}
bool CPCSCClass::ListReadernames(CComboBox* m_cblist)
{
char *pReaderList = NULL;
DWORD ReaderListSize = SCARD_AUTOALLOCATE;
char *pch;
if(m_cblist == NULL)
{
mylog.AddToLogs(m_logobj,"error: NULL combobox class");
return false;
}
//save the combobox to class
m_cbListObj = m_cblist;
m_cblist->ResetContent();
RetCode = SCardListReadersA(
hContext,
NULL,
(LPSTR)&pReaderList,
&ReaderListSize);
if (RetCode != SCARD_S_SUCCESS)
{
mylog.AddToLogs(m_logobj,"error: SCardListReaders Failed");
mylog.AddToLogs(m_logobj,TranslatePCSCError());
return false;
}
else
{
mylog.AddToLogs(m_logobj,"SCardListReaders Success");
}
pch = pReaderList;
while (*pch != 0)
{
m_cblist->AddString (pch);
pch += strlen (pch) + 1;
}
m_cblist->SetCurSel(0);
RetCode = SCardFreeMemory( hContext, pReaderList );
if (RetCode != SCARD_S_SUCCESS)
{
mylog.AddToLogs(m_logobj,"error: SCardFreeMemory Failed");
}
return true;
}
