static void OS_ThreadWrapper(void)
{
/* Execute the thread entry point */
current->entry_point(current->arg);
/* The thread is finished so we free all the TCB entries */
SYS_ThreadExit();
}
void EHStatusHandlerThread(PREADER_CONTEXT rContext)
{
LONG rv;
LPCSTR lpcReader;
DWORD dwStatus, dwReaderSharing;
DWORD dwCurrentState;
int pageSize = SYS_GetPageSize();
/*
* Zero out everything
*/
dwStatus = 0;
dwReaderSharing = 0;
dwCurrentState = 0;
secdebug("pcscd", "EHStatusHandlerThread: rContext: 0x%p", rContext);
lpcReader = rContext->lpcReader;
PCSCD::SharedReaderState *rs = PCSCD::SharedReaderState::overlay(rContext->readerState);
DWORD tmpCardAtrLength = MAX_ATR_SIZE;
rv = IFDStatusICC(rContext, &dwStatus, rs->xcardAtr(), &tmpCardAtrLength);
secdebug("pcscd", "EHStatusHandlerThread: initial call to IFDStatusICC: %d [%04X]", rv, rv);
if (dwStatus & SCARD_PRESENT)
{
tmpCardAtrLength = MAX_ATR_SIZE;
rv = IFDPowerICC(rContext, IFD_POWER_UP, rs->xcardAtr(), &tmpCardAtrLength);
/* the protocol is unset after a power on */
rs->xcardProtocol(SCARD_PROTOCOL_UNSET);
secdebug("pcscd", "EHStatusHandlerThread: initial call to IFDPowerICC: %d [%04X]", rv, rv);
if (rv == IFD_SUCCESS)
{
rs->xcardAtrLength(tmpCardAtrLength);
dwStatus |= SCARD_PRESENT;
dwStatus &= ~SCARD_ABSENT;
dwStatus |= SCARD_POWERED;
dwStatus |= SCARD_NEGOTIABLE;
dwStatus &= ~SCARD_SPECIFIC;
dwStatus &= ~SCARD_SWALLOWED;
dwStatus &= ~SCARD_UNKNOWN;
if (rs->xcardAtrLength() > 0)
{
LogXxd(PCSC_LOG_INFO, "Card ATR: ",
rs->xcardAtr(),
rs->xcardAtrLength());
}
else
Log1(PCSC_LOG_INFO, "Card ATR: (NULL)");
}
else
{
dwStatus |= SCARD_PRESENT;
dwStatus &= ~SCARD_ABSENT;
dwStatus |= SCARD_SWALLOWED;
dwStatus &= ~SCARD_POWERED;
dwStatus &= ~SCARD_NEGOTIABLE;
dwStatus &= ~SCARD_SPECIFIC;
dwStatus &= ~SCARD_UNKNOWN;
Log3(PCSC_LOG_ERROR, "Error powering up card: %d 0x%04X", rv, rv);
}
dwCurrentState = SCARD_PRESENT;
}
else
{
dwStatus |= SCARD_ABSENT;
dwStatus &= ~SCARD_PRESENT;
dwStatus &= ~SCARD_POWERED;
dwStatus &= ~SCARD_NEGOTIABLE;
dwStatus &= ~SCARD_SPECIFIC;
dwStatus &= ~SCARD_SWALLOWED;
dwStatus &= ~SCARD_UNKNOWN;
rs->xcardAtrLength(0);
rs->xcardProtocol(SCARD_PROTOCOL_UNSET);
dwCurrentState = SCARD_ABSENT;
}
/*
* Set all the public attributes to this reader
*/
rs->xreaderState(dwStatus);
dwReaderSharing = rContext->dwContexts;
rs->sharing(dwReaderSharing);
SYS_MMapSynchronize((void *) rContext->readerState, pageSize);
while (1)
{
dwStatus = 0;
// Defensive measure
if (!rContext->vHandle)
{
// Exit and notify the caller
secdebug("pcscd", "EHStatusHandlerThread: lost dynamic callbacks ??");
ReaderContextUnlock(rContext);
SYS_ThreadDetach(rContext->pthThread);
SYS_ThreadExit(0);
}
DWORD tmpCardAtrLength = MAX_ATR_SIZE;
rv = IFDStatusICC(rContext, &dwStatus, rs->xcardAtr(), &tmpCardAtrLength);
if (rv != SCARD_S_SUCCESS)
{
Log2(PCSC_LOG_ERROR, "Error communicating to: %s", lpcReader);
/*
* Set error status on this reader while errors occur
*/
DWORD readerStateTmp = rs->xreaderState();
readerStateTmp &= ~SCARD_ABSENT;
readerStateTmp &= ~SCARD_PRESENT;
readerStateTmp &= ~SCARD_POWERED;
readerStateTmp &= ~SCARD_NEGOTIABLE;
readerStateTmp &= ~SCARD_SPECIFIC;
readerStateTmp &= ~SCARD_SWALLOWED;
readerStateTmp |= SCARD_UNKNOWN;
rs->xcardAtrLength(0);
rs->xcardProtocol(SCARD_PROTOCOL_UNSET);
rs->xreaderState(readerStateTmp);
dwCurrentState = SCARD_UNKNOWN;
SYS_MMapSynchronize((void *) rContext->readerState, pageSize);
/*
* This code causes race conditions on G4's with USB
* insertion
*/
/*
* dwErrorCount += 1; SYS_Sleep(1);
*/
/*
* After 10 seconds of errors, try to reinitialize the reader
* This sometimes helps bring readers out of *crazy* states.
*/
/*
* if ( dwErrorCount == 10 ) { RFUnInitializeReader( rContext
* ); RFInitializeReader( rContext ); dwErrorCount = 0; }
*/
/*
* End of race condition code block
*/
}
if (dwStatus & SCARD_ABSENT)
{
if (dwCurrentState == SCARD_PRESENT ||
dwCurrentState == SCARD_UNKNOWN)
{
/*
* Change the status structure
*/
Log2(PCSC_LOG_INFO, "Card Removed From %s", lpcReader);
/*
* Notify the card has been removed
*/
RFSetReaderEventState(rContext, SCARD_REMOVED);
rs->xcardAtrLength(0);
rs->xcardProtocol(SCARD_PROTOCOL_UNSET);
DWORD readerStateTmp = rs->xreaderState();
readerStateTmp |= SCARD_ABSENT;
readerStateTmp &= ~SCARD_UNKNOWN;
readerStateTmp &= ~SCARD_PRESENT;
readerStateTmp &= ~SCARD_POWERED;
readerStateTmp &= ~SCARD_NEGOTIABLE;
readerStateTmp &= ~SCARD_SWALLOWED;
readerStateTmp &= ~SCARD_SPECIFIC;
rs->xreaderState(readerStateTmp);
dwCurrentState = SCARD_ABSENT;
SYS_MMapSynchronize((void *) rContext->readerState, pageSize);
}
}
else if (dwStatus & SCARD_PRESENT)
{
if (dwCurrentState == SCARD_ABSENT ||
dwCurrentState == SCARD_UNKNOWN)
{
/*
* Power and reset the card
*/
SYS_USleep(PCSCLITE_STATUS_WAIT);
DWORD tmpCardAtrLength = MAX_ATR_SIZE;
rv = IFDPowerICC(rContext, IFD_POWER_UP, rs->xcardAtr(), &tmpCardAtrLength);
/* the protocol is unset after a power on */
rs->xcardProtocol(SCARD_PROTOCOL_UNSET);
secdebug("pcscd", "EHStatusHandlerThread: power-and-reset call to IFDPowerICC: %d [%04X]", rv, rv);
DWORD readerStateTmp = rs->xreaderState();
if (rv == IFD_SUCCESS)
{
rs->xcardAtrLength(tmpCardAtrLength);
readerStateTmp |= SCARD_PRESENT;
readerStateTmp &= ~SCARD_ABSENT;
readerStateTmp |= SCARD_POWERED;
readerStateTmp |= SCARD_NEGOTIABLE;
readerStateTmp &= ~SCARD_SPECIFIC;
readerStateTmp &= ~SCARD_UNKNOWN;
readerStateTmp &= ~SCARD_SWALLOWED;
rs->xreaderState(readerStateTmp);
/*
* Notify the card has been reset
*/
RFSetReaderEventState(rContext, SCARD_RESET);
}
else
{
readerStateTmp |= SCARD_PRESENT;
readerStateTmp &= ~SCARD_ABSENT;
readerStateTmp |= SCARD_SWALLOWED;
readerStateTmp &= ~SCARD_POWERED;
readerStateTmp &= ~SCARD_NEGOTIABLE;
readerStateTmp &= ~SCARD_SPECIFIC;
readerStateTmp &= ~SCARD_UNKNOWN;
rs->xreaderState(readerStateTmp);
rs->xcardAtrLength(0);
}
dwCurrentState = SCARD_PRESENT;
SYS_MMapSynchronize((void *) rContext->readerState, pageSize);
Log2(PCSC_LOG_INFO, "Card inserted into %s", lpcReader);
if (rv == IFD_SUCCESS)
{
if (rs->xcardAtrLength() > 0)
LogXxd(PCSC_LOG_INFO, "Card ATR: ", rs->xcardAtr(), rs->xcardAtrLength());
else
Log1(PCSC_LOG_INFO, "Card ATR: (NULL)");
}
else
Log1(PCSC_LOG_ERROR,"Error powering up card.");
}
}
if (ReaderContextIsLocked(rContext))
{
/*
* Exit and notify the caller
*/
secdebug("pcscd", "EHStatusHandlerThread: parent requested shutdown");
ReaderContextUnlock(rContext);
SYS_ThreadDetach(rContext->pthThread);
SYS_ThreadExit(0);
}
/*
* Sharing may change w/o an event pass it on
*/
if (dwReaderSharing != (uint32_t)rContext->dwContexts)
{
dwReaderSharing = rContext->dwContexts;
rs->sharing(dwReaderSharing);
SYS_MMapSynchronize((void *) rContext->readerState, pageSize);
}
SYS_USleep(PCSCLITE_STATUS_POLL_RATE);
}
}
