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#include "SCardManager.h"
#include "PCSCException.h"
namespace VeraCrypt
{
shared_ptr<SCardLoader> SCardManager::loader = make_shared<SCardLoader>();
SCardManager::SCardManager()
{
loader->Initialize();
}
SCardManager::~SCardManager()
{
loader->Finalize();
}
vector<wstring> SCardManager::GetReaders()
{
vector<wstring> readers;
LPTSTR mszReaders = NULL;
LPTSTR ptr = NULL;
DWORD dwReaders = 0;
SCARDCONTEXT hScardContext = 0;
LONG lRet = SCARD_S_SUCCESS;
hScardContext = loader->GetSCardContext();
lRet = loader->SCardIsValidContext(hScardContext);
if (SCARD_S_SUCCESS != lRet)
{
loader->SCardReleaseContext(hScardContext);
lRet = loader->SCardEstablishContext(SCARD_SCOPE_USER, NULL, NULL, &hScardContext);
if (lRet != SCARD_S_SUCCESS)
throw PCSCException(lRet);
}
#ifdef SCARD_AUTOALLOCATE
dwReaders = SCARD_AUTOALLOCATE;
lRet = loader->SCardListReaders(hScardContext, NULL, (LPTSTR)&mszReaders, &dwReaders);
#else
lRet = loader->SCardListReaders(hScardContext, NULL, NULL, &dwReaders);
if (lRet == SCARD_S_SUCCESS)
{
mszReaders = (LPTSTR)calloc(dwReaders, sizeof(char));
lRet = loader->SCardListReaders(hScardContext, NULL, mszReaders, &dwReaders);
}
#endif
if (lRet == SCARD_S_SUCCESS && !mszReaders)
{
lRet = SCARD_E_NO_READERS_AVAILABLE;
}
if (lRet == SCARD_E_NO_READERS_AVAILABLE)
{
readers.clear();
lRet = SCARD_S_SUCCESS;
}
if (lRet == SCARD_S_SUCCESS && mszReaders)
{
ptr = mszReaders;
while (*ptr)
{
#ifdef TC_WINDOWS
readers.push_back(ptr);
#else
readers.push_back(StringConverter::ToWide(ptr));
#endif
ptr +=
#ifdef TC_WINDOWS
wcslen(ptr) + 1;
#else
strlen(ptr) + 1;
#endif
}
#ifdef SCARD_AUTOALLOCATE
loader->SCardFreeMemory(hScardContext, mszReaders);
#else
free(mszReaders);
#endif
}
if (lRet != SCARD_S_SUCCESS)
throw PCSCException(lRet);
return readers;
}
shared_ptr<SCardReader> SCardManager::GetReader(size_t readerNumber)
{
vector<wstring> readers;
shared_ptr<SCardReader> smartCardReader;
loader->Initialize();
readers = GetReaders();
if (readerNumber < readers.size())
{
smartCardReader = make_shared<SCardReader>(readers[readerNumber], loader);
if (smartCardReader)
{
return smartCardReader;
}
}
throw InvalidEMVPath();
}
}
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