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/* ****************************************************************************
* eID Middleware Project.
* Copyright (C) 2008-2009 FedICT.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version
* 3.0 as published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, see
* http://www.gnu.org/licenses/.
**************************************************************************** */
#include "CardLayer.h"
#include "Cache.h"
namespace eIDMW
{
CCardLayer::CCardLayer(void)
{
m_ulReaderCount = 0;
for (unsigned long i = 0; i < MAX_READERS; i++)
m_tpReaders[i] = NULL;
}
CCardLayer::~CCardLayer(void)
{
for (unsigned long i = 0; i < MAX_READERS; i++)
{
if (m_tpReaders[i] != NULL) {
delete m_tpReaders[i];
m_tpReaders[i] = NULL;
}
}
}
void CCardLayer::ForceRelease(void)
{
m_oContext.m_oPCSC.ReleaseContext();
}
/**
* This is something you typically do just once, unless you
* want to check if new readers were inserted/removed.
* Note: PKCS#11 assumes that the number of readers never
* change, so you have to call this function only in
* C_GetSlotList().
*/
CReadersInfo CCardLayer::ListReaders()
{
CReadersInfo theReadersInfo;
CByteArray oReaders;
// Do an SCardEstablishContext() if not done yet
try
{
m_oContext.m_oPCSC.EstablishContext();
oReaders = m_oContext.m_oPCSC.ListReaders();
}
catch(CMWException &e)
{
unsigned long err = e.GetError();
if (err == EIDMW_ERR_NO_READER)
return theReadersInfo;
throw;
}
theReadersInfo = CReadersInfo(&m_oContext.m_oPCSC, oReaders);
if (oReaders.Size() != 0)
{
m_szDefaultReaderName = (char *) oReaders.GetBytes();
}
return theReadersInfo;
}
CReader & CCardLayer::getReader(const std::string &csReaderName)
{
// Do an SCardEstablishContext() if not done yet
m_oContext.m_oPCSC.EstablishContext();
CReader *pRet = NULL;
// If csReaderName == "", take the default (= first found) reader name
const std::string *pcsReaderName = (csReaderName.size() == 0) ?
GetDefaultReader() : &csReaderName;
if (pcsReaderName->size() == 0)
throw CMWEXCEPTION(EIDMW_ERR_NO_READER);
// First check if the reader doesn't exist already
for (unsigned long i = 0; i < MAX_READERS; i++)
{
if (m_tpReaders[i] != NULL) {
if (m_tpReaders[i]->GetReaderName() == *pcsReaderName)
{
pRet = m_tpReaders[i];
break;
}
}
}
// No CReader object for this readername -> make one
if (pRet == NULL)
{
for (unsigned long i = 0; i < MAX_READERS; i++)
{
if (m_tpReaders[i] == NULL) {
pRet = new CReader(*pcsReaderName, &m_oContext);
m_tpReaders[i] = pRet;
break;
}
}
}
// No room in m_tpReaders -> throw an exception
if (pRet == NULL)
throw CMWEXCEPTION(EIDMW_ERR_LIMIT);
return *pRet;
}
std::string * CCardLayer::GetDefaultReader()
{
std::string *pRet = &m_szDefaultReaderName;
if (m_szDefaultReaderName.size() == 0)
{
CByteArray csReaders = m_oContext.m_oPCSC.ListReaders();
if (csReaders.Size() != 0)
m_szDefaultReaderName = (char *) csReaders.GetBytes();
}
return pRet;
}
bool CCardLayer::DeleteFromCache(const std::string & csSerialNr)
{
return CCache::Delete(csSerialNr);
}
}
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