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#include "Ase.h"
/* ASE reader generic command types */
#define ASE_LONG_RESPONSE_PID 0x90
#define ASE_RESPONSE_PID 0x10
#define ASE_ACK_PID 0x20
#define ASE_LONG_RESPONSE_WITH_STATUS_PID 0xF0
#define ASE_RESPONSE_WITH_STATUS_PID 0x70
/*****************************************************************************
*
*****************************************************************************/
//#define ASE_PACKET_TYPE(pid, cnt, dst) (pid | cnt << 2 | dst)
#define ASE_PACKET_TYPE(pid, cnt, dst) (pid | dst)
/*****************************************************************************
*
*****************************************************************************/
/* returns 0 on success, negative number otherwise */
int checkValidity (int retVal, int len, int actual, char* message) {
if (retVal < 0 || actual != len) {
#ifdef ASE_DEBUG
syslog(LOG_INFO, "%s Error = %d\n", message, retVal);
#endif
return retVal;
}
return ASE_OK;
}
/*****************************************************************************
*
*****************************************************************************/
static void cleanResponseBuffer (reader* globalData) {
IO_CleanReadBuffer(globalData);
}
/*****************************************************************************
*
*****************************************************************************/
/* returns 0 on success, negative number otherwise
outBuf should be large enough to contain the close response */
int sendCloseResponseCommand (reader* globalData, char socket, char* cmd, int len,
char* outBuf, int* outBufLen, char ignoreEvents) {
int retVal, actual, i, readLen, retryTimes = 5, withStatus = 0;
uchar oneByte, cs, readcs;
unsigned long cwt = (globalData->cards[(int)socket].cwt > 0 ? globalData->cards[(int)socket].cwt : 1000);
/* send the command */
retVal = writeToReader(globalData, cmd, len, &actual);
if (checkValidity(retVal, len, actual, "sendCloseResponseCommand - Error! in command write.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
/* read the close response */
/* set the timeout for the packet header */
cwt = MAX(cwt * 260, globalData->cards[(int)socket].bwt);
cwt += 200000; // delta of 0.2 seconds
/* read packet header and verify it's ok */
retVal = readResponse(globalData, socket, 1, (char*)(&oneByte), &actual, cwt);
if (checkValidity(retVal, 1, actual, "sendCloseResponseCommand - Error! in packet header read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
/* loop until we get the start of a response or an error has occured */
while (oneByte != ASE_LONG_RESPONSE_PID && oneByte != ASE_RESPONSE_PID &&
oneByte != ASE_RESPONSE_WITH_STATUS_PID && oneByte != ASE_LONG_RESPONSE_WITH_STATUS_PID &&
retryTimes) {
/* check if it's an acknowledgment */
if (oneByte & ASE_ACK_PID) {
if (parseStatus(oneByte) != ASE_READER_EXTRA_WAITING_TIME) {
#ifdef ASE_DEBUG
syslog(LOG_INFO, "sendCloseResponseCommand - Status 0x%x%x.\n", (oneByte & 0xF0) >> 4, oneByte & 0x0F);
#endif
cleanResponseBuffer(globalData);
return parseStatus(oneByte);
}
else
retryTimes = 5;
}
/* check if it's an event */
else if (isEvent(oneByte)) {
/* this is an event and it's concerning the current card */
parseEvent(globalData, socket, oneByte);
#ifdef ASE_DEBUG
syslog(LOG_INFO, "sendCloseResponseCommand - Event 0x%x%x.\n", (oneByte & 0xF0) >> 4, oneByte & 0x0F);
#endif
retryTimes = 5;
}
/* this must be an error -> send a retry command */
else {
char cmd[4];
cmd[0] = ASE_PACKET_TYPE(0x50, globalData->commandCounter, socket);
globalData->commandCounter++;
globalData->commandCounter %= 4;
cmd[1] = 0x44;
cmd[2] = 0x0;
cmd[3] = cmd[0] ^ cmd[1] ^ cmd[2];
retVal = writeToReader(globalData, cmd, 4, &actual);
if (checkValidity(retVal, 4, actual, "sendControlCommand - Error! in command write.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
retryTimes = 5;
}
/* read packet header and verify it's ok */
retVal = readResponse(globalData, socket, 1, (char*)(&oneByte), &actual, cwt);
if (checkValidity(retVal, 1, actual, "sendCloseResponseCommand - Error! in packet header read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
retryTimes--;
}
if (retryTimes == 0) {
#ifdef ASE_DEBUG
syslog(LOG_INFO, "sendCloseResponseCommand - Error! retryTimes is 0.\n");
#endif
return ASE_ERROR_RESEND_COMMAND;
}
cs = oneByte;
/* set the timeout for the length */
cwt = 100000; // 0.1 sec
/* check if a status byte appears at the end of the response */
if (oneByte == ASE_LONG_RESPONSE_WITH_STATUS_PID || oneByte == ASE_RESPONSE_WITH_STATUS_PID)
withStatus = 1;
/* this is a response header, so read its length */
if (oneByte == ASE_LONG_RESPONSE_PID || oneByte == ASE_LONG_RESPONSE_WITH_STATUS_PID) {
/* long response */
retVal = readResponse(globalData, socket, 1, (char*)(&oneByte), &actual, cwt);
if (checkValidity(retVal, 1, actual, "sendCloseResponseCommand - Error! in packet header read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
cs ^= oneByte;
readLen = (oneByte << 8);
readLen &= 0xFF00;
retVal = readResponse(globalData, socket, 1, (char*)(&oneByte), &actual, cwt);
if (checkValidity(retVal, 1, actual, "sendCloseResponseCommand - Error! in packet header read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
cs ^= oneByte;
readLen |= (oneByte & 0xFF);
}
else {
/* short response */
retVal = readResponse(globalData, socket, 1, (char*)(&oneByte), &actual, cwt);
if (checkValidity(retVal, 1, actual, "sendCloseResponseCommand - Error! in packet header read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
cs ^= oneByte;
readLen = oneByte;
}
/* set the timeout for the data */
cwt = 100000 * (readLen + 1); // 0.1 sec per byte
/***!!!!!!!!!!!!!!!!!!!!***************************************/
/* read data + checksum */
retVal = readResponse(globalData, socket, readLen + 1, outBuf, outBufLen, cwt);
if (checkValidity(retVal, readLen + 1, *outBufLen, "sendCloseResponseCommand - Error! in data read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
readcs = outBuf[*outBufLen - 1];
(*outBufLen)--;
for (i = 0 ; i < *outBufLen ; ++i)
cs ^= outBuf[i];
/* check the status byte provided */
if (withStatus) {
/* remove the last byte of outBuf and check the status */
(*outBufLen)--;
if (outBuf[*outBufLen] != ASE_ACK_PID) {
/* read the checksum */
/*retVal = readResponse(globalData, socket, 1, &oneByte, &actual, cwt);*/
/* return error according to the status byte */
cleanResponseBuffer(globalData);
return parseStatus(outBuf[*outBufLen]);
}
}
/* read the checksum */
/*
retVal = readResponse(globalData, socket, 1, &oneByte, &actual);
if (checkValidity(retVal, 1, actual, "sendCloseResponseCommand - Error! in checksum read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
*/
if (cs != readcs) {
#ifdef ASE_DEBUG
syslog(LOG_INFO, "sendCloseResponseCommand - Error! invalid checksum.\n");
#endif
cleanResponseBuffer(globalData);
return ASE_ERROR_CHECKSUM;
}
return ASE_OK;
}
/*****************************************************************************
*
*****************************************************************************/
/* returns 0 on success, negative number otherwise
outBuf will contain the ACK/NAK byte sent as response */
int sendControlCommand (reader* globalData, char socket, char* cmd, int len,
char* outBuf, int* outBufLen, char ignoreEvents) {
int retVal, actual, retryTimes = 5;
unsigned long cwt = (globalData->cards[(int)socket].cwt > 0 ? globalData->cards[(int)socket].cwt : 1000);
#ifdef ASE_DEBUG
uchar oneByte;
#endif
/* send the command */
retVal = writeToReader(globalData, cmd, len, &actual);
if (checkValidity(retVal, len, actual, "sendControlCommand - Error! in command write.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
/* read the Ack control byte */
/* set the timeout for the packet header */
// cwt = MAX(cwt * 260, globalData->cards[(int)socket].bwt);
cwt = 3000000; // 3 sec
retVal = readResponse(globalData, socket, 1, outBuf, outBufLen, cwt);
if (checkValidity(retVal, 1, *outBufLen, "sendControlCommand - Error! in ack read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
/* loop until we get an OK acknowledgement */
while (outBuf[0] != ASE_ACK_PID && retryTimes) {
/* check if it's an acknowledgment */
if (outBuf[0] & ASE_ACK_PID) {
if (parseStatus(outBuf[0]) != ASE_READER_EXTRA_WAITING_TIME) {
#ifdef ASE_DEBUG
syslog(LOG_INFO, "sendControlCommand - Error! Status 0x%x%x.\n", (oneByte & 0xF0) >> 4, oneByte & 0x0F);
#endif
cleanResponseBuffer(globalData);
return parseStatus(outBuf[0]);
}
else
retryTimes = 5;
}
/* check if it's an event */
else if (isEvent((uchar)(outBuf[0]))) {
parseEvent(globalData, socket, outBuf[0]);
retryTimes = 5;
}
/* this must be an error -> send a retry command */
else {
char cmd[4];
cmd[0] = ASE_PACKET_TYPE(0x50, globalData->commandCounter, socket);
globalData->commandCounter++;
globalData->commandCounter %= 4;
cmd[1] = 0x44;
cmd[2] = 0x0;
cmd[3] = cmd[0] ^ cmd[1] ^ cmd[2];
retVal = writeToReader(globalData, cmd, 4, &actual);
if (checkValidity(retVal, 4, actual, "sendControlCommand - Error! in command write.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
retryTimes = 5;
}
/* read packet header and verify it's ok */
retVal = readResponse(globalData, socket, 1, outBuf, outBufLen, cwt);
if (checkValidity(retVal, 1, *outBufLen, "sendControlCommand - Error! in ack read.\n")) {
cleanResponseBuffer(globalData);
return retVal;
}
retryTimes--;
}
return ASE_OK;
}
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