\r
static int sniffState = SNF_INIT;\r
static uint8_t sniffUIDType;\r
-static uint8_t sniffUID[8];\r
-static uint8_t sniffATQA[2];\r
+static uint8_t sniffUID[8] = {0x00};\r
+static uint8_t sniffATQA[2] = {0x00};\r
static uint8_t sniffSAK;\r
-static uint8_t sniffBuf[16];\r
-static int timerData = 0;\r
+static uint8_t sniffBuf[16] = {0x00};\r
+static uint32_t timerData = 0;\r
\r
\r
-int MfSniffInit(void){\r
- rsamples = 0;\r
+bool MfSniffInit(void){\r
memset(sniffUID, 0x00, 8);\r
memset(sniffATQA, 0x00, 2);\r
sniffSAK = 0;\r
sniffUIDType = SNF_UID_4;\r
\r
- return 0;\r
+ return FALSE;\r
}\r
\r
-int MfSniffEnd(void){\r
-// UsbCommand ack = {CMD_ACK, {0, 0, 0}};\r
-\r
+bool MfSniffEnd(void){\r
LED_B_ON();\r
- cmd_send(CMD_ACK,0,0,0,0,0);\r
-// UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
+ cmd_send(CMD_ACK,0,0,0,0,0);\r
LED_B_OFF();\r
\r
- return 0;\r
+ return FALSE;\r
}\r
\r
-int RAMFUNC MfSniffLogic(const uint8_t * data, int len, uint32_t parity, int bitCnt, int reader) {\r
+bool RAMFUNC MfSniffLogic(const uint8_t *data, uint16_t len, uint8_t *parity, uint16_t bitCnt, bool reader) {\r
\r
- if ((len == 1) && (bitCnt = 9) && (data[0] > 0x0F)) { \r
+ if (reader && (len == 1) && (bitCnt == 7)) { // reset on 7-Bit commands from reader\r
sniffState = SNF_INIT;\r
}\r
\r
switch (sniffState) {\r
case SNF_INIT:{\r
- if ((reader) && (len == 1) && (bitCnt == 9) && ((data[0] == 0x26) || (data[0] == 0x52))) { \r
+ if ((len == 1) && (reader) && (bitCnt == 7) ) { // REQA or WUPA from reader\r
sniffUIDType = SNF_UID_4;\r
memset(sniffUID, 0x00, 8);\r
memset(sniffATQA, 0x00, 2);\r
sniffSAK = 0;\r
-\r
sniffState = SNF_WUPREQ;\r
}\r
break;\r
}\r
case SNF_WUPREQ:{\r
- if ((!reader) && (len == 2)) { \r
+ if ((!reader) && (len == 2)) { // ATQA from tag\r
memcpy(sniffATQA, data, 2);\r
-\r
sniffState = SNF_ATQA;\r
}\r
break;\r
}\r
case SNF_ATQA:{\r
- if ((reader) && (len == 2) && (data[0] == 0x93) && (data[1] == 0x20)) { \r
+ if ((reader) && (len == 2) && (data[0] == 0x93) && (data[1] == 0x20)) { // Select ALL from reader\r
sniffState = SNF_ANTICOL1;\r
}\r
break;\r
}\r
case SNF_ANTICOL1:{\r
- if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { \r
+ if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { // UID from tag (CL1) \r
memcpy(sniffUID + 3, data, 4);\r
- \r
sniffState = SNF_UID1;\r
}\r
break;\r
}\r
case SNF_UID1:{\r
- if ((reader) && (len == 9) && (data[0] == 0x93) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9))) { \r
+ if ((reader) && (len == 9) && (data[0] == 0x93) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9))) { // Select 4 Byte UID from reader\r
sniffState = SNF_SAK;\r
}\r
break;\r
}\r
case SNF_SAK:{\r
- if ((!reader) && (len == 3) && (CheckCrc14443(CRC_14443_A, data, 3))) { \r
+ if ((!reader) && (len == 3) && (CheckCrc14443(CRC_14443_A, data, 3))) { // SAK from card?\r
sniffSAK = data[0];\r
- if (sniffUID[3] == 0x88) {\r
+ if (sniffUID[3] == 0x88) { // CL2 UID part to be expected\r
sniffState = SNF_ANTICOL2;\r
- } else {\r
+ } else { // select completed\r
sniffState = SNF_CARD_IDLE;\r
}\r
}\r
break;\r
}\r
case SNF_ANTICOL2:{\r
- if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { \r
- memcpy(sniffUID, data, 4);\r
+ if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { // CL2 UID \r
+ memcpy(sniffUID, sniffUID+4, 3);\r
+ memcpy(sniffUID+3, data, 4);\r
sniffUIDType = SNF_UID_7;\r
- \r
sniffState = SNF_UID2;\r
- }\r
+ }\r
break;\r
}\r
case SNF_UID2:{\r
- if ((reader) && (len == 9) && (data[0] == 0x95) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9))) { \r
+ if ((reader) && (len == 9) && (data[0] == 0x95) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9))) { // Select 2nd part of 7 Byte UID\r
sniffState = SNF_SAK;\r
- Dbprintf("SNF_SAK"); \r
}\r
break;\r
}\r
- case SNF_CARD_IDLE:{\r
+ case SNF_CARD_IDLE:{ // trace the card select sequence\r
sniffBuf[0] = 0xFF;\r
sniffBuf[1] = 0xFF;\r
memcpy(sniffBuf + 2, sniffUID, 7);\r
sniffBuf[11] = sniffSAK;\r
sniffBuf[12] = 0xFF;\r
sniffBuf[13] = 0xFF;\r
- LogTrace(sniffBuf, 14, 0, parity, true);\r
- timerData = GetTickCount();\r
- }\r
- case SNF_CARD_CMD:{\r
- LogTrace(data, len, 0, parity, true);\r
-\r
+ LogTrace(sniffBuf, 14, 0, 0, NULL, TRUE);\r
+ } // intentionally no break;\r
+ case SNF_CARD_CMD:{ \r
+ LogTrace(data, len, 0, 0, NULL, TRUE);\r
sniffState = SNF_CARD_RESP;\r
timerData = GetTickCount();\r
break;\r
}\r
case SNF_CARD_RESP:{\r
- LogTrace(data, len, 0, parity, false);\r
-\r
+ LogTrace(data, len, 0, 0, NULL, FALSE);\r
sniffState = SNF_CARD_CMD;\r
timerData = GetTickCount();\r
break;\r
break;\r
}\r
\r
- return 0;\r
+\r
+ return FALSE;\r
}\r
\r
-int RAMFUNC MfSniffSend(int maxTimeoutMs) {\r
- if (traceLen && (timerData + maxTimeoutMs < GetTickCount())) {\r
+bool RAMFUNC MfSniffSend(uint16_t maxTimeoutMs) {\r
+ if (BigBuf_get_traceLen() && (GetTickCount() > timerData + maxTimeoutMs)) {\r
return intMfSniffSend();\r
}\r
- return 0;\r
+ return FALSE;\r
}\r
\r
-// internal seding function. not a RAMFUNC.\r
-int intMfSniffSend() {\r
- \r
+// internal sending function. not a RAMFUNC.\r
+bool intMfSniffSend() {\r
+\r
int pckSize = 0;\r
- int pckLen = traceLen;\r
+ int pckLen = BigBuf_get_traceLen();\r
int pckNum = 0;\r
+ uint8_t *trace = BigBuf_get_addr();\r
\r
- if (!traceLen) return 0;\r
-\r
FpgaDisableSscDma();\r
-\r
while (pckLen > 0) {\r
- pckSize = MIN(32, pckLen);\r
-// UsbCommand ack = {CMD_ACK, {1, pckSize, pckNum}};\r
-// memcpy(ack.d.asBytes, trace + traceLen - pckLen, pckSize);\r
- \r
+ pckSize = MIN(USB_CMD_DATA_SIZE, pckLen);\r
LED_B_ON();\r
- cmd_send(CMD_ACK,1,pckSize,pckNum,trace + traceLen - pckLen,pckSize);\r
-// UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
-// SpinDelay(20);\r
+ cmd_send(CMD_ACK, 1, BigBuf_get_traceLen(), pckSize, trace + BigBuf_get_traceLen() - pckLen, pckSize);\r
LED_B_OFF();\r
\r
pckLen -= pckSize;\r
pckNum++;\r
}\r
\r
-// UsbCommand ack = {CMD_ACK, {2, 0, 0}};\r
-\r
LED_B_ON();\r
- cmd_send(CMD_ACK,2,0,0,0,0);\r
-// UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
+ cmd_send(CMD_ACK,2,0,0,0,0);\r
LED_B_OFF();\r
\r
- traceLen = 0;\r
- memset(trace, 0x44, TRACE_SIZE);\r
+ clear_trace();\r
\r
- return 1;\r
+ return TRUE;\r
}\r
projects / proxmark3-svn / blobdiff