]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/mifaresniff.c
Merge branch 'master' of https://github.com/iceman1001/proxmark3
[proxmark3-svn] / armsrc / mifaresniff.c
index aefe6962483315c992c5a61682f29024083e2a42..2dcd6d1a4276332ba2908a565d707e8eba922b8f 100644 (file)
 //-----------------------------------------------------------------------------\r
 \r
 #include "mifaresniff.h"\r
-#include "apps.h"\r
 \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 sniffSAK;\r
-static uint8_t sniffBuf[16];\r
-static int timerData = 0;\r
-\r
-\r
-int MfSniffInit(void){\r
-       rsamples = 0;\r
-       memset(sniffUID, 0x00, 8);\r
-       memset(sniffATQA, 0x00, 2);\r
+static uint8_t sniffUIDType = 0;\r
+static uint8_t sniffUID[10] = {0,0,0,0,0,0,0,0,0,0};\r
+static uint8_t sniffATQA[2] = {0,0};\r
+static uint8_t sniffSAK = 0;\r
+static uint8_t sniffBuf[17];\r
+static uint32_t timerData = 0;\r
+\r
+void MfSniffInit(void){\r
+       memset(sniffUID, 0x00, sizeof(sniffUID));\r
+       memset(sniffATQA, 0x00, sizeof(sniffATQA));\r
+       memset(sniffBuf, 0x00, sizeof(sniffBuf));\r
        sniffSAK = 0;\r
        sniffUIDType = SNF_UID_4;\r
-\r
-       return 0;\r
 }\r
 \r
-int MfSniffEnd(void){\r
-       UsbCommand ack = {CMD_ACK, {0, 0, 0}};\r
-\r
+void MfSniffEnd(void){\r
        LED_B_ON();\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
 }\r
 \r
-int RAMFUNC MfSniffLogic(const uint8_t * data, int len, 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)) { \r
+       // reset on 7-Bit commands from reader\r
+       if (reader && (len == 1) && (bitCnt == 7)) {            \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
-                               sniffUIDType = SNF_UID_4;\r
-                               memset(sniffUID, 0x00, 8);\r
-                               memset(sniffATQA, 0x00, 2);\r
-                               sniffSAK = 0;\r
-\r
+                       // REQA or WUPA from reader\r
+                       if ((len == 1) && (reader) && (bitCnt == 7) ) {\r
+                               MfSniffInit();\r
                                sniffState = SNF_WUPREQ;\r
                        }\r
                        break;\r
                }\r
                case SNF_WUPREQ:{\r
-                       if ((!reader) && (len == 2)) { \r
-                               memcpy(sniffATQA, data, 2);\r
-\r
+                       // ATQA from tag\r
+                       if ((!reader) && (len == 2)) {\r
+                               sniffATQA[0] = data[0];\r
+                               sniffATQA[1] = data[1];\r
                                sniffState = SNF_ATQA;\r
                        }\r
                        break;\r
                }\r
                case SNF_ATQA:{\r
-                       if ((reader) && (len == 2) && (data[0] == 0x93) && (data[1] == 0x20)) { \r
+                       // Select ALL from reader\r
+                       if ((reader) && (len == 2) && (data[0] == 0x93) && (data[1] == 0x20))\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
-                               memcpy(sniffUID + 3, data, 4);\r
-                       \r
+                       // UID from tag (CL1) \r
+                       if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) {\r
+                               memcpy(sniffUID, data, 4);\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
+                       // Select 4 Byte UID from reader\r
+                       if ((reader) && (len == 9) && (data[0] == 0x93) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9)))\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
-                                       sniffState = SNF_ANTICOL2;\r
-                               } else {\r
+                               if (sniffUID[0] == 0x88)                        // CL2/3 UID part to be expected                                        \r
+                                       sniffState = (sniffState == SNF_ANTICOL2 ) ? SNF_ANTICOL3 : SNF_ANTICOL2;\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
+                        // CL2 UID \r
+                       if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) {\r
+                               sniffUID[0] = sniffUID[1];\r
+                               sniffUID[1] = sniffUID[2];\r
+                               sniffUID[2] = sniffUID[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
+                       // Select 2nd part of 7 Byte UID\r
+                       if ((reader) && (len == 9) && (data[0] == 0x95) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9)))\r
                                sniffState = SNF_SAK;\r
-       Dbprintf("SNF_SAK");                            \r
+                       break;\r
+               }\r
+               case SNF_ANTICOL3:{\r
+                       // CL3 UID \r
+                       if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { \r
+                               // 3+3+4 = 10.\r
+                               sniffUID[3] = sniffUID[4];\r
+                               sniffUID[4] = sniffUID[5];\r
+                               sniffUID[5] = sniffUID[6];\r
+                               memcpy(sniffUID+6, data, 4);\r
+                               sniffUIDType = SNF_UID_10;\r
+                               sniffState = SNF_UID3;\r
                        }\r
                        break;\r
                }\r
-               case SNF_CARD_IDLE:{\r
+               case SNF_UID3:{\r
+                       // Select 3nd part of 10 Byte UID\r
+                       if ((reader) && (len == 9) && (data[0] == 0x97) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9)))\r
+                               sniffState = SNF_SAK;\r
+                       break;\r
+               }\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
-                       memcpy(sniffBuf + 9, sniffATQA, 2);\r
-                       sniffBuf[11] = sniffSAK;\r
-                       sniffBuf[12] = 0xFF;\r
-                       sniffBuf[13] = 0xFF;\r
-                       LogTrace(sniffBuf, 14, 0, 0, true);\r
-                       timerData = GetTickCount();\r
-               }\r
-               case SNF_CARD_CMD:{\r
-                       LogTrace(data, len, 0, 0, true);\r
-\r
+                       memcpy(sniffBuf + 2, sniffUID, sizeof(sniffUID));\r
+                       memcpy(sniffBuf + 12, sniffATQA, sizeof(sniffATQA));\r
+                       sniffBuf[14] = sniffSAK;\r
+                       sniffBuf[15] = 0xFF;\r
+                       sniffBuf[16] = 0xFF;\r
+                       LogTrace(sniffBuf, sizeof(sniffBuf), 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, 0, false);\r
-\r
+                       LogTrace(data, len, 0, 0, NULL, FALSE);\r
                        sniffState = SNF_CARD_CMD;\r
                        timerData = GetTickCount();\r
                        break;\r
                }\r
-       \r
                default:\r
                        sniffState = SNF_INIT;\r
                break;\r
        }\r
-\r
-       return 0;\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 *data = BigBuf_get_addr();\r
        \r
-       if (!traceLen) return 0;\r
-\r
-       AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;\r
-\r
+       FpgaDisableSscDma();\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
-               UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
-               SpinDelay(20);\r
+               cmd_send(CMD_ACK, 1, BigBuf_get_traceLen(), pckSize, data + 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
-       UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
+       cmd_send(CMD_ACK,2,0,0,0,0);  // 2 == data transfer is finished.\r
        LED_B_OFF();\r
 \r
-       traceLen = 0;\r
-       memset(trace, 0x44, TRACE_SIZE);\r
-       \r
-       return 1;\r
+       clear_trace();\r
+       return TRUE;\r
 }\r
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