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ADD @pwpiwi 's fixes for "HF 14B" commands.
[proxmark3-svn] / client / cmdhfmf.c
diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index cbe94efe22900afad7b1171a88f4ca8bc6cc3d16..809c623acff06c3d05fad362c48aa19503e25fdb 100644 (file)
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -7,8 +7,9 @@
 //-----------------------------------------------------------------------------\r
 // High frequency MIFARE commands\r
 //-----------------------------------------------------------------------------\r
 //-----------------------------------------------------------------------------\r
 // High frequency MIFARE commands\r
 //-----------------------------------------------------------------------------\r
-#include "../include/mifare.h"\r
+\r
 #include "cmdhfmf.h"\r
 #include "cmdhfmf.h"\r
+#include "nonce2key/nonce2key.h"\r
 \r
 static int CmdHelp(const char *Cmd);\r
 \r
 \r
 static int CmdHelp(const char *Cmd);\r
 \r
@@ -34,7 +35,7 @@ start:
     SendCommand(&c);\r
        \r
        //flush queue\r
     SendCommand(&c);\r
        \r
        //flush queue\r
-       while (ukbhit()) getchar();\r
+       while (ukbhit())        getchar();\r
 \r
        // wait cycle\r
        while (true) {\r
 \r
        // wait cycle\r
        while (true) {\r
@@ -71,14 +72,14 @@ start:
                PrintAndLog("Key not found (lfsr_common_prefix list is null). Nt=%08x", nt);    \r
        } else {\r
                printf("------------------------------------------------------------------\n");\r
                PrintAndLog("Key not found (lfsr_common_prefix list is null). Nt=%08x", nt);    \r
        } else {\r
                printf("------------------------------------------------------------------\n");\r
-               PrintAndLog("Key found :%012"llx" \n", r_key);\r
+               PrintAndLog("Key found:%012"llx" \n", r_key);\r
 \r
                num_to_bytes(r_key, 6, keyBlock);\r
                isOK = mfCheckKeys(0, 0, 1, keyBlock, &r_key);\r
        }\r
        \r
        if (!isOK) \r
 \r
                num_to_bytes(r_key, 6, keyBlock);\r
                isOK = mfCheckKeys(0, 0, 1, keyBlock, &r_key);\r
        }\r
        \r
        if (!isOK) \r
-               PrintAndLog("Found valid key :%012"llx, r_key);\r
+               PrintAndLog("Found valid key:%012"llx, r_key);\r
        else\r
        {\r
                if (isOK != 2) PrintAndLog("Found invalid key. ");      \r
        else\r
        {\r
                if (isOK != 2) PrintAndLog("Found invalid key. ");      \r
@@ -124,10 +125,10 @@ int CmdHF14AMfWrBl(const char *Cmd)
        PrintAndLog("--block no:%d, key type:%c, key:%s", blockNo, keyType?'B':'A', sprint_hex(key, 6));\r
        PrintAndLog("--data: %s", sprint_hex(bldata, 16));\r
        \r
        PrintAndLog("--block no:%d, key type:%c, key:%s", blockNo, keyType?'B':'A', sprint_hex(key, 6));\r
        PrintAndLog("--data: %s", sprint_hex(bldata, 16));\r
        \r
-       UsbCommand c = {CMD_MIFARE_WRITEBL, {blockNo, keyType, 0}};\r
+  UsbCommand c = {CMD_MIFARE_WRITEBL, {blockNo, keyType, 0}};\r
        memcpy(c.d.asBytes, key, 6);\r
        memcpy(c.d.asBytes + 10, bldata, 16);\r
        memcpy(c.d.asBytes, key, 6);\r
        memcpy(c.d.asBytes + 10, bldata, 16);\r
-       SendCommand(&c);\r
+  SendCommand(&c);\r
 \r
        UsbCommand resp;\r
        if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
 \r
        UsbCommand resp;\r
        if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
@@ -168,9 +169,9 @@ int CmdHF14AMfRdBl(const char *Cmd)
        }\r
        PrintAndLog("--block no:%d, key type:%c, key:%s ", blockNo, keyType?'B':'A', sprint_hex(key, 6));\r
        \r
        }\r
        PrintAndLog("--block no:%d, key type:%c, key:%s ", blockNo, keyType?'B':'A', sprint_hex(key, 6));\r
        \r
-       UsbCommand c = {CMD_MIFARE_READBL, {blockNo, keyType, 0}};\r
+  UsbCommand c = {CMD_MIFARE_READBL, {blockNo, keyType, 0}};\r
        memcpy(c.d.asBytes, key, 6);\r
        memcpy(c.d.asBytes, key, 6);\r
-       SendCommand(&c);\r
+  SendCommand(&c);\r
 \r
        UsbCommand resp;\r
        if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
 \r
        UsbCommand resp;\r
        if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
@@ -298,7 +299,7 @@ int CmdHF14AMfDump(const char *Cmd)
        }\r
        \r
        if ((fin = fopen("dumpkeys.bin","rb")) == NULL) {\r
        }\r
        \r
        if ((fin = fopen("dumpkeys.bin","rb")) == NULL) {\r
-               PrintAndLog("Could not find file dumpkeys.bin");                \r
+               PrintAndLog("Could not find file dumpkeys.bin");\r
                return 1;\r
        }\r
        \r
                return 1;\r
        }\r
        \r
@@ -321,7 +322,7 @@ int CmdHF14AMfDump(const char *Cmd)
        }\r
        \r
        fclose(fin);\r
        }\r
        \r
        fclose(fin);\r
-       \r
+\r
        PrintAndLog("|-----------------------------------------|");\r
        PrintAndLog("|------ Reading sector access bits...-----|");\r
        PrintAndLog("|-----------------------------------------|");\r
        PrintAndLog("|-----------------------------------------|");\r
        PrintAndLog("|------ Reading sector access bits...-----|");\r
        PrintAndLog("|-----------------------------------------|");\r
@@ -374,12 +375,12 @@ int CmdHF14AMfDump(const char *Cmd)
                                        received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
                                } else if (rights[sectorNo][data_area] == 0x07) {                                                                               // no key would work\r
                                        isOK = false;\r
                                        received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
                                } else if (rights[sectorNo][data_area] == 0x07) {                                                                               // no key would work\r
                                        isOK = false;\r
-                                               PrintAndLog("Access rights do not allow reading of sector %2d block %3d", sectorNo, blockNo);\r
+                                       PrintAndLog("Access rights do not allow reading of sector %2d block %3d", sectorNo, blockNo);\r
                                } else {                                                                                                                                                                // key A would work\r
                                } else {                                                                                                                                                                // key A would work\r
-                                               UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
-                                               memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
-                                               SendCommand(&c);\r
-                                               received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
+                                       UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
+                                       memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
+                                       SendCommand(&c);\r
+                                       received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
                                }\r
                        }\r
 \r
                                }\r
                        }\r
 \r
@@ -426,7 +427,7 @@ int CmdHF14AMfDump(const char *Cmd)
                fclose(fout);\r
                PrintAndLog("Dumped %d blocks (%d bytes) to file dumpdata.bin", numblocks, 16*numblocks);\r
        }\r
                fclose(fout);\r
                PrintAndLog("Dumped %d blocks (%d bytes) to file dumpdata.bin", numblocks, 16*numblocks);\r
        }\r
-       \r
+               \r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r
@@ -434,7 +435,7 @@ int CmdHF14AMfRestore(const char *Cmd)
 {\r
        uint8_t sectorNo,blockNo;\r
        uint8_t keyType = 0;\r
 {\r
        uint8_t sectorNo,blockNo;\r
        uint8_t keyType = 0;\r
-       uint8_t key[6] = {0xFF};\r
+       uint8_t key[6] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};\r
        uint8_t bldata[16] = {0x00};\r
        uint8_t keyA[40][6];\r
        uint8_t keyB[40][6];\r
        uint8_t bldata[16] = {0x00};\r
        uint8_t keyA[40][6];\r
        uint8_t keyB[40][6];\r
@@ -461,7 +462,7 @@ int CmdHF14AMfRestore(const char *Cmd)
                PrintAndLog("         hf mf restore 4");\r
                return 0;\r
        }\r
                PrintAndLog("         hf mf restore 4");\r
                return 0;\r
        }\r
-       \r
+\r
        if ((fkeys = fopen("dumpkeys.bin","rb")) == NULL) {\r
                PrintAndLog("Could not find file dumpkeys.bin");\r
                return 1;\r
        if ((fkeys = fopen("dumpkeys.bin","rb")) == NULL) {\r
                PrintAndLog("Could not find file dumpkeys.bin");\r
                return 1;\r
@@ -470,6 +471,8 @@ int CmdHF14AMfRestore(const char *Cmd)
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
                if (fread(keyA[sectorNo], 1, 6, fkeys) == 0) {\r
                        PrintAndLog("File reading error (dumpkeys.bin).");\r
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
                if (fread(keyA[sectorNo], 1, 6, fkeys) == 0) {\r
                        PrintAndLog("File reading error (dumpkeys.bin).");\r
+\r
+                       fclose(fkeys);\r
                        return 2;\r
                }\r
        }\r
                        return 2;\r
                }\r
        }\r
@@ -477,12 +480,13 @@ int CmdHF14AMfRestore(const char *Cmd)
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
                if (fread(keyB[sectorNo], 1, 6, fkeys) == 0) {\r
                        PrintAndLog("File reading error (dumpkeys.bin).");\r
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
                if (fread(keyB[sectorNo], 1, 6, fkeys) == 0) {\r
                        PrintAndLog("File reading error (dumpkeys.bin).");\r
+                       fclose(fkeys);\r
                        return 2;\r
                }\r
        }\r
 \r
        fclose(fkeys);\r
                        return 2;\r
                }\r
        }\r
 \r
        fclose(fkeys);\r
-       \r
+\r
        if ((fdump = fopen("dumpdata.bin","rb")) == NULL) {\r
                PrintAndLog("Could not find file dumpdata.bin");\r
                return 1;\r
        if ((fdump = fopen("dumpdata.bin","rb")) == NULL) {\r
                PrintAndLog("Could not find file dumpdata.bin");\r
                return 1;\r
@@ -544,7 +548,7 @@ int CmdHF14AMfNested(const char *Cmd)
        uint8_t trgKeyType = 0;\r
        uint8_t SectorsCnt = 0;\r
        uint8_t key[6] = {0, 0, 0, 0, 0, 0};\r
        uint8_t trgKeyType = 0;\r
        uint8_t SectorsCnt = 0;\r
        uint8_t key[6] = {0, 0, 0, 0, 0, 0};\r
-       uint8_t keyBlock[13*6];\r
+       uint8_t keyBlock[14*6];\r
        uint64_t key64 = 0;\r
        bool transferToEml = false;\r
        \r
        uint64_t key64 = 0;\r
        bool transferToEml = false;\r
        \r
@@ -690,13 +694,6 @@ int CmdHF14AMfNested(const char *Cmd)
                bool calibrate = true;\r
                for (i = 0; i < NESTED_SECTOR_RETRY; i++) {\r
                        for (uint8_t sectorNo = 0; sectorNo < SectorsCnt; sectorNo++) {\r
                bool calibrate = true;\r
                for (i = 0; i < NESTED_SECTOR_RETRY; i++) {\r
                        for (uint8_t sectorNo = 0; sectorNo < SectorsCnt; sectorNo++) {\r
-\r
-                               if (ukbhit()) {\r
-                                       printf("\naborted via keyboard!\n");\r
-                                       free(e_sector);\r
-                                       return 2;\r
-                               }                       \r
-                       \r
                                for (trgKeyType = 0; trgKeyType < 2; trgKeyType++) { \r
                                        if (e_sector[sectorNo].foundKey[trgKeyType]) continue;\r
                                        PrintAndLog("-----------------------------------------------");\r
                                for (trgKeyType = 0; trgKeyType < 2; trgKeyType++) { \r
                                        if (e_sector[sectorNo].foundKey[trgKeyType]) continue;\r
                                        PrintAndLog("-----------------------------------------------");\r
@@ -773,7 +770,7 @@ int CmdHF14AMfNested(const char *Cmd)
                        }\r
                        fclose(fkeys);\r
                }\r
                        }\r
                        fclose(fkeys);\r
                }\r
-\r
+               \r
                free(e_sector);\r
        }\r
        return 0;\r
                free(e_sector);\r
        }\r
        return 0;\r
@@ -785,14 +782,14 @@ int CmdHF14AMfChk(const char *Cmd)
                PrintAndLog("Usage:  hf mf chk <block number>|<*card memory> <key type (A/B/?)> [t|d] [<key (12 hex symbols)>] [<dic (*.dic)>]");\r
                PrintAndLog("          * - all sectors");\r
                PrintAndLog("card memory - 0 - MINI(320 bytes), 1 - 1K, 2 - 2K, 4 - 4K, <other> - 1K");\r
                PrintAndLog("Usage:  hf mf chk <block number>|<*card memory> <key type (A/B/?)> [t|d] [<key (12 hex symbols)>] [<dic (*.dic)>]");\r
                PrintAndLog("          * - all sectors");\r
                PrintAndLog("card memory - 0 - MINI(320 bytes), 1 - 1K, 2 - 2K, 4 - 4K, <other> - 1K");\r
-               PrintAndLog("d - write keys to binary file\n");\r
-               PrintAndLog("t - write keys to emulator memory");\r
+               PrintAndLog("d - write keys to binary file");\r
+               PrintAndLog("t - write keys to emulator memory\n");\r
                PrintAndLog("      sample: hf mf chk 0 A 1234567890ab keys.dic");\r
                PrintAndLog("              hf mf chk *1 ? t");\r
                PrintAndLog("              hf mf chk *1 ? d");\r
                return 0;\r
                PrintAndLog("      sample: hf mf chk 0 A 1234567890ab keys.dic");\r
                PrintAndLog("              hf mf chk *1 ? t");\r
                PrintAndLog("              hf mf chk *1 ? d");\r
                return 0;\r
-       }\r
-       \r
+       }       \r
+\r
        FILE * f;\r
        char filename[FILE_PATH_SIZE]={0};\r
        char buf[13];\r
        FILE * f;\r
        char filename[FILE_PATH_SIZE]={0};\r
        char buf[13];\r
@@ -937,8 +934,8 @@ int CmdHF14AMfChk(const char *Cmd)
                PrintAndLog("No key specified, trying default keys");\r
                for (;keycnt < defaultKeysSize; keycnt++)\r
                        PrintAndLog("chk default key[%2d] %02x%02x%02x%02x%02x%02x", keycnt,\r
                PrintAndLog("No key specified, trying default keys");\r
                for (;keycnt < defaultKeysSize; keycnt++)\r
                        PrintAndLog("chk default key[%2d] %02x%02x%02x%02x%02x%02x", keycnt,\r
-                       (keyBlock + 6*keycnt)[0],(keyBlock + 6*keycnt)[1], (keyBlock + 6*keycnt)[2],\r
-                       (keyBlock + 6*keycnt)[3], (keyBlock + 6*keycnt)[4],     (keyBlock + 6*keycnt)[5], 6);\r
+                               (keyBlock + 6*keycnt)[0],(keyBlock + 6*keycnt)[1], (keyBlock + 6*keycnt)[2],\r
+                               (keyBlock + 6*keycnt)[3], (keyBlock + 6*keycnt)[4],     (keyBlock + 6*keycnt)[5], 6);\r
        }\r
        \r
        // initialize storage for found keys\r
        }\r
        \r
        // initialize storage for found keys\r
@@ -983,13 +980,13 @@ int CmdHF14AMfChk(const char *Cmd)
                                for (uint16_t t = 0; t < 2; t++) {\r
                                        if (validKey[t][sectorNo]) {\r
                                                memcpy(block + t*10, foundKey[t][sectorNo], 6);\r
                                for (uint16_t t = 0; t < 2; t++) {\r
                                        if (validKey[t][sectorNo]) {\r
                                                memcpy(block + t*10, foundKey[t][sectorNo], 6);\r
-               }\r
-                       }\r
+                                       }\r
+                               }\r
                                mfEmlSetMem(block, FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 1);\r
                        }\r
                }\r
                PrintAndLog("Found keys have been transferred to the emulator memory");\r
                                mfEmlSetMem(block, FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 1);\r
                        }\r
                }\r
                PrintAndLog("Found keys have been transferred to the emulator memory");\r
-                       }\r
+       }\r
 \r
        if (createDumpFile) {\r
                FILE *fkeys = fopen("dumpkeys.bin","wb");\r
 \r
        if (createDumpFile) {\r
                FILE *fkeys = fopen("dumpkeys.bin","wb");\r
@@ -997,7 +994,7 @@ int CmdHF14AMfChk(const char *Cmd)
                        PrintAndLog("Could not create file dumpkeys.bin");\r
                        free(keyBlock);\r
                        return 1;\r
                        PrintAndLog("Could not create file dumpkeys.bin");\r
                        free(keyBlock);\r
                        return 1;\r
-                       }\r
+               }\r
                for (uint16_t t = 0; t < 2; t++) {\r
                        fwrite(foundKey[t], 1, 6*SectorsCnt, fkeys);\r
                }\r
                for (uint16_t t = 0; t < 2; t++) {\r
                        fwrite(foundKey[t], 1, 6*SectorsCnt, fkeys);\r
                }\r
@@ -1007,7 +1004,7 @@ int CmdHF14AMfChk(const char *Cmd)
 \r
        free(keyBlock);\r
        PrintAndLog("");\r
 \r
        free(keyBlock);\r
        PrintAndLog("");\r
-  return 0;\r
+       return 0;\r
 }\r
 \r
 int CmdHF14AMf1kSim(const char *Cmd)\r
 }\r
 \r
 int CmdHF14AMf1kSim(const char *Cmd)\r
@@ -1015,13 +1012,19 @@ int CmdHF14AMf1kSim(const char *Cmd)
        uint8_t uid[7] = {0, 0, 0, 0, 0, 0, 0};\r
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = 0;\r
        uint8_t uid[7] = {0, 0, 0, 0, 0, 0, 0};\r
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = 0;\r
+       \r
+       uint8_t cmdp = param_getchar(Cmd, 0);\r
 \r
 \r
-       if (param_getchar(Cmd, 0) == 'h') {\r
+       clearCommandBuffer();\r
+       \r
+       if (cmdp == 'h' || cmdp == 'H') {\r
                PrintAndLog("Usage:  hf mf sim  u <uid (8 hex symbols)> n <numreads> i x");\r
                PrintAndLog("Usage:  hf mf sim  u <uid (8 hex symbols)> n <numreads> i x");\r
+               PrintAndLog("           h    this help");\r
                PrintAndLog("           u    (Optional) UID. If not specified, the UID from emulator memory will be used");\r
                PrintAndLog("           n    (Optional) Automatically exit simulation after <numreads> blocks have been read by reader. 0 = infinite");\r
                PrintAndLog("           i    (Optional) Interactive, means that console will not be returned until simulation finishes or is aborted");\r
                PrintAndLog("           x    (Optional) Crack, performs the 'reader attack', nr/ar attack against a legitimate reader, fishes out the key(s)");\r
                PrintAndLog("           u    (Optional) UID. If not specified, the UID from emulator memory will be used");\r
                PrintAndLog("           n    (Optional) Automatically exit simulation after <numreads> blocks have been read by reader. 0 = infinite");\r
                PrintAndLog("           i    (Optional) Interactive, means that console will not be returned until simulation finishes or is aborted");\r
                PrintAndLog("           x    (Optional) Crack, performs the 'reader attack', nr/ar attack against a legitimate reader, fishes out the key(s)");\r
+               PrintAndLog("");\r
                PrintAndLog("           sample: hf mf sim u 0a0a0a0a ");\r
                return 0;\r
        }\r
                PrintAndLog("           sample: hf mf sim u 0a0a0a0a ");\r
                return 0;\r
        }\r
@@ -1063,15 +1066,42 @@ int CmdHF14AMf1kSim(const char *Cmd)
        SendCommand(&c);\r
 \r
        if(flags & FLAG_INTERACTIVE)\r
        SendCommand(&c);\r
 \r
        if(flags & FLAG_INTERACTIVE)\r
-       {\r
-               UsbCommand resp;\r
+       {               \r
                PrintAndLog("Press pm3-button to abort simulation");\r
                PrintAndLog("Press pm3-button to abort simulation");\r
-               while(! WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
-                       //We're waiting only 1.5 s at a time, otherwise we get the\r
-                       // annoying message about "Waiting for a response... "\r
+               \r
+               uint8_t data[40];\r
+               uint8_t key[6];\r
+\r
+               UsbCommand resp;                \r
+               while(!ukbhit() ){\r
+                       if ( WaitForResponseTimeout(CMD_ACK,&resp,1500) ) {\r
+                               if ( (resp.arg[0] & 0xffff) == CMD_SIMULATE_MIFARE_CARD ){\r
+                                       memset(data, 0x00, sizeof(data));\r
+                                       memset(key, 0x00, sizeof(key));\r
+                                       int len = (resp.arg[1] > sizeof(data)) ? sizeof(data) : resp.arg[1];\r
+                                       \r
+                                       memcpy(data, resp.d.asBytes, len);\r
+                                       \r
+                                       uint64_t corr_uid = 0;\r
+                                       if ( memcmp(data, "\x00\x00\x00\x00", 4) == 0 ) {\r
+                                               corr_uid = (data[3] << 24) | (data[2] << 16) | (data[1] << 8) | data[0];\r
+                                       }\r
+                                       else {\r
+                                               corr_uid |= (uint64_t)data[2] << 48; \r
+                                               corr_uid |= (uint64_t)data[1] << 40; \r
+                                               corr_uid |= (uint64_t)data[0] << 32;\r
+                                               corr_uid |= data[7] << 24;\r
+                                               corr_uid |= data[6] << 16;\r
+                                               corr_uid |= data[5] << 8;\r
+                                               corr_uid |= data[4];\r
+                                       }\r
+                                       tryMfk32(corr_uid, data, key);\r
+                                       //tryMfk64(corr_uid, data, key);\r
+                                       PrintAndLog("--");\r
+                               }\r
+                       }\r
                }\r
        }\r
                }\r
        }\r
-       \r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r
@@ -1102,7 +1132,7 @@ int CmdHF14AMfDbg(const char *Cmd)
 int CmdHF14AMfEGet(const char *Cmd)\r
 {\r
        uint8_t blockNo = 0;\r
 int CmdHF14AMfEGet(const char *Cmd)\r
 {\r
        uint8_t blockNo = 0;\r
-       uint8_t data[16];\r
+       uint8_t data[16] = {0x00};\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf eget <block number>");\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf eget <block number>");\r
@@ -1169,14 +1199,11 @@ int CmdHF14AMfELoad(const char *Cmd)
        FILE * f;\r
        char filename[FILE_PATH_SIZE];\r
        char *fnameptr = filename;\r
        FILE * f;\r
        char filename[FILE_PATH_SIZE];\r
        char *fnameptr = filename;\r
-       char buf[64];\r
-       uint8_t buf8[64];\r
+       char buf[64] = {0x00};\r
+       uint8_t buf8[64] = {0x00};\r
        int i, len, blockNum, numBlocks;\r
        int nameParamNo = 1;\r
        \r
        int i, len, blockNum, numBlocks;\r
        int nameParamNo = 1;\r
        \r
-       memset(filename, 0, sizeof(filename));\r
-       memset(buf, 0, sizeof(buf));\r
-\r
        char ctmp = param_getchar(Cmd, 0);\r
                \r
        if ( ctmp == 'h' || ctmp == 0x00) {\r
        char ctmp = param_getchar(Cmd, 0);\r
                \r
        if ( ctmp == 'h' || ctmp == 0x00) {\r
@@ -1203,7 +1230,7 @@ int CmdHF14AMfELoad(const char *Cmd)
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
-       if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+       if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
 \r
        fnameptr += len;\r
 \r
 \r
        fnameptr += len;\r
 \r
@@ -1246,11 +1273,13 @@ int CmdHF14AMfELoad(const char *Cmd)
                        fclose(f);\r
                        return 3;\r
                }\r
                        fclose(f);\r
                        return 3;\r
                }\r
+               printf(".");\r
                blockNum++;\r
                \r
                if (blockNum >= numBlocks) break;\r
        }\r
        fclose(f);\r
                blockNum++;\r
                \r
                if (blockNum >= numBlocks) break;\r
        }\r
        fclose(f);\r
+       printf("\n");\r
        \r
        if ((blockNum != numBlocks)) {\r
                PrintAndLog("File content error. Got %d must be %d blocks.",blockNum, numBlocks);\r
        \r
        if ((blockNum != numBlocks)) {\r
                PrintAndLog("File content error. Got %d must be %d blocks.",blockNum, numBlocks);\r
@@ -1276,7 +1305,7 @@ int CmdHF14AMfESave(const char *Cmd)
        char ctmp = param_getchar(Cmd, 0);\r
        \r
        if ( ctmp == 'h' || ctmp == 'H') {\r
        char ctmp = param_getchar(Cmd, 0);\r
        \r
        if ( ctmp == 'h' || ctmp == 'H') {\r
-               PrintAndLog("It saves emul dump into the file `filename.eml` or `cardID.eml`");         \r
+               PrintAndLog("It saves emul dump into the file `filename.eml` or `cardID.eml`");\r
                PrintAndLog(" Usage:  hf mf esave [card memory] [file name w/o `.eml`]");\r
                PrintAndLog("  [card memory]: 0 = 320 bytes (Mifare Mini), 1 = 1K (default), 2 = 2K, 4 = 4K");\r
                PrintAndLog("");\r
                PrintAndLog(" Usage:  hf mf esave [card memory] [file name w/o `.eml`]");\r
                PrintAndLog("  [card memory]: 0 = 320 bytes (Mifare Mini), 1 = 1K (default), 2 = 2K, 4 = 4K");\r
                PrintAndLog("");\r
@@ -1285,7 +1314,7 @@ int CmdHF14AMfESave(const char *Cmd)
                PrintAndLog("         hf mf esave 4 filename");\r
                return 0;\r
        }       \r
                PrintAndLog("         hf mf esave 4 filename");\r
                return 0;\r
        }       \r
-       \r
+\r
        switch (ctmp) {\r
                case '0' : numBlocks = 5*4; break;\r
                case '1' : \r
        switch (ctmp) {\r
                case '0' : numBlocks = 5*4; break;\r
                case '1' : \r
@@ -1300,17 +1329,20 @@ int CmdHF14AMfESave(const char *Cmd)
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
-       if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+       if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
        \r
        // user supplied filename?\r
        if (len < 1) {\r
                // get filename (UID from memory)\r
                if (mfEmlGetMem(buf, 0, 1)) {\r
                        PrintAndLog("Can\'t get UID from block: %d", 0);\r
        \r
        // user supplied filename?\r
        if (len < 1) {\r
                // get filename (UID from memory)\r
                if (mfEmlGetMem(buf, 0, 1)) {\r
                        PrintAndLog("Can\'t get UID from block: %d", 0);\r
-                       sprintf(filename, "dump.eml"); \r
+                       len = sprintf(fnameptr, "dump");\r
+                       fnameptr += len;\r
+               }\r
+               else {\r
+                       for (j = 0; j < 7; j++, fnameptr += 2)\r
+                               sprintf(fnameptr, "%02X", buf[j]);\r
                }\r
                }\r
-               for (j = 0; j < 7; j++, fnameptr += 2)\r
-                       sprintf(fnameptr, "%02X", buf[j]); \r
        } else {\r
                fnameptr += len;\r
        }\r
        } else {\r
                fnameptr += len;\r
        }\r
@@ -1320,7 +1352,7 @@ int CmdHF14AMfESave(const char *Cmd)
        \r
        // open file\r
        f = fopen(filename, "w+");\r
        \r
        // open file\r
        f = fopen(filename, "w+");\r
-       \r
+\r
        if ( !f ) {\r
                PrintAndLog("Can't open file %s ", filename);\r
                return 1;\r
        if ( !f ) {\r
                PrintAndLog("Can't open file %s ", filename);\r
                return 1;\r
@@ -1434,31 +1466,64 @@ int CmdHF14AMfCSetUID(const char *Cmd)
        uint8_t wipeCard = 0;\r
        uint8_t uid[8] = {0x00};\r
        uint8_t oldUid[8] = {0x00};\r
        uint8_t wipeCard = 0;\r
        uint8_t uid[8] = {0x00};\r
        uint8_t oldUid[8] = {0x00};\r
+       uint8_t atqa[2] = {0x00};\r
+       uint8_t sak[1] = {0x00};\r
+       uint8_t atqaPresent = 1;\r
        int res;\r
        int res;\r
-\r
-       if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
-               PrintAndLog("Usage:  hf mf csetuid <UID 8 hex symbols> <w>");\r
-               PrintAndLog("sample:  hf mf csetuid 01020304 w");\r
-               PrintAndLog("Set UID for magic Chinese card (only works with!!!)");\r
-               PrintAndLog("If you want wipe card then add 'w' into command line. \n");\r
+       char ctmp;\r
+       int argi=0;\r
+\r
+       if (strlen(Cmd) < 1 || param_getchar(Cmd, argi) == 'h') {\r
+               PrintAndLog("Usage:  hf mf csetuid <UID 8 hex symbols> [ATQA 4 hex symbols SAK 2 hex symbols] [w]");\r
+               PrintAndLog("sample:  hf mf csetuid 01020304");\r
+               PrintAndLog("sample:  hf mf csetuid 01020304 0004 08 w");\r
+               PrintAndLog("Set UID, ATQA, and SAK for magic Chinese card (only works with such cards)");\r
+               PrintAndLog("If you also want to wipe the card then add 'w' at the end of the command line.");\r
                return 0;\r
                return 0;\r
-       }       \r
+       }\r
 \r
 \r
-       if (param_getchar(Cmd, 0) && param_gethex(Cmd, 0, uid, 8)) {\r
+       if (param_getchar(Cmd, argi) && param_gethex(Cmd, argi, uid, 8)) {\r
                PrintAndLog("UID must include 8 HEX symbols");\r
                return 1;\r
        }\r
                PrintAndLog("UID must include 8 HEX symbols");\r
                return 1;\r
        }\r
+       argi++;\r
 \r
 \r
-       char ctmp = param_getchar(Cmd, 1);\r
-       if (ctmp == 'w' || ctmp == 'W') wipeCard = 1;\r
-       \r
-       PrintAndLog("--wipe card:%02x uid:%s", wipeCard, sprint_hex(uid, 4));\r
+       ctmp = param_getchar(Cmd, argi);\r
+       if (ctmp == 'w' || ctmp == 'W') {\r
+               wipeCard = 1;\r
+               atqaPresent = 0;\r
+       }\r
 \r
 \r
-       res = mfCSetUID(uid, oldUid, wipeCard);\r
-       if (res) {\r
-               PrintAndLog("Can't set UID. error=%d", res);\r
-               return 1;\r
+       if (atqaPresent) {\r
+               if (param_getchar(Cmd, argi)) {\r
+                       if (param_gethex(Cmd, argi, atqa, 4)) {\r
+                               PrintAndLog("ATQA must include 4 HEX symbols");\r
+                               return 1;\r
+                       }\r
+                       argi++;\r
+                       if (!param_getchar(Cmd, argi) || param_gethex(Cmd, argi, sak, 2)) {\r
+                               PrintAndLog("SAK must include 2 HEX symbols");\r
+                               return 1;\r
+                       }\r
+                       argi++;\r
+               } else\r
+                       atqaPresent = 0;\r
+       }\r
+\r
+       if(!wipeCard) {\r
+               ctmp = param_getchar(Cmd, argi);\r
+               if (ctmp == 'w' || ctmp == 'W') {\r
+                       wipeCard = 1;\r
+               }\r
        }\r
        }\r
+\r
+       PrintAndLog("--wipe card:%s  uid:%s", (wipeCard)?"YES":"NO", sprint_hex(uid, 4));\r
+\r
+       res = mfCSetUID(uid, (atqaPresent)?atqa:NULL, (atqaPresent)?sak:NULL, oldUid, wipeCard);\r
+       if (res) {\r
+                       PrintAndLog("Can't set UID. error=%d", res);\r
+                       return 1;\r
+               }\r
        \r
        PrintAndLog("old UID:%s", sprint_hex(oldUid, 4));\r
        PrintAndLog("new UID:%s", sprint_hex(uid, 4));\r
        \r
        PrintAndLog("old UID:%s", sprint_hex(oldUid, 4));\r
        PrintAndLog("new UID:%s", sprint_hex(uid, 4));\r
@@ -1467,17 +1532,16 @@ int CmdHF14AMfCSetUID(const char *Cmd)
 \r
 int CmdHF14AMfCSetBlk(const char *Cmd)\r
 {\r
 \r
 int CmdHF14AMfCSetBlk(const char *Cmd)\r
 {\r
-       uint8_t uid[8];\r
-       uint8_t memBlock[16];\r
+       uint8_t memBlock[16] = {0x00};\r
        uint8_t blockNo = 0;\r
        uint8_t blockNo = 0;\r
+       bool wipeCard = FALSE;\r
        int res;\r
        int res;\r
-       memset(memBlock, 0x00, sizeof(memBlock));\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
-               PrintAndLog("Usage:  hf mf csetblk <block number> <block data (32 hex symbols)>");\r
+               PrintAndLog("Usage:  hf mf csetblk <block number> <block data (32 hex symbols)> [w]");\r
                PrintAndLog("sample:  hf mf csetblk 1 01020304050607080910111213141516");\r
                PrintAndLog("sample:  hf mf csetblk 1 01020304050607080910111213141516");\r
-               PrintAndLog("Set block data for magic Chinese card (only works with!!!)");\r
-               PrintAndLog("If you want wipe card then add 'w' into command line. \n");\r
+               PrintAndLog("Set block data for magic Chinese card (only works with such cards)");\r
+               PrintAndLog("If you also want wipe the card then add 'w' at the end of the command line");\r
                return 0;\r
        }       \r
 \r
                return 0;\r
        }       \r
 \r
@@ -1488,15 +1552,15 @@ int CmdHF14AMfCSetBlk(const char *Cmd)
                return 1;\r
        }\r
 \r
                return 1;\r
        }\r
 \r
+       char ctmp = param_getchar(Cmd, 2);\r
+       wipeCard = (ctmp == 'w' || ctmp == 'W');\r
        PrintAndLog("--block number:%2d data:%s", blockNo, sprint_hex(memBlock, 16));\r
 \r
        PrintAndLog("--block number:%2d data:%s", blockNo, sprint_hex(memBlock, 16));\r
 \r
-       res = mfCSetBlock(blockNo, memBlock, uid, 0, CSETBLOCK_SINGLE_OPER);\r
+       res = mfCSetBlock(blockNo, memBlock, NULL, wipeCard, CSETBLOCK_SINGLE_OPER);\r
        if (res) {\r
        if (res) {\r
-                       PrintAndLog("Can't write block. error=%d", res);\r
-                       return 1;\r
-               }\r
-       \r
-       PrintAndLog("UID:%s", sprint_hex(uid, 4));\r
+               PrintAndLog("Can't write block. error=%d", res);\r
+               return 1;\r
+       }\r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r
@@ -1509,13 +1573,10 @@ int CmdHF14AMfCLoad(const char *Cmd)
        char buf[64] = {0x00};\r
        uint8_t buf8[64] = {0x00};\r
        uint8_t fillFromEmulator = 0;\r
        char buf[64] = {0x00};\r
        uint8_t buf8[64] = {0x00};\r
        uint8_t fillFromEmulator = 0;\r
-       int i, len, blockNum, flags;\r
+       int i, len, blockNum, flags=0;\r
        \r
        \r
-       // memset(filename, 0, sizeof(filename));\r
-       // memset(buf, 0, sizeof(buf));\r
-\r
        if (param_getchar(Cmd, 0) == 'h' || param_getchar(Cmd, 0)== 0x00) {\r
        if (param_getchar(Cmd, 0) == 'h' || param_getchar(Cmd, 0)== 0x00) {\r
-               PrintAndLog("It loads magic Chinese card (only works with!!!) from the file `filename.eml`");\r
+               PrintAndLog("It loads magic Chinese card from the file `filename.eml`");\r
                PrintAndLog("or from emulator memory (option `e`)");\r
                PrintAndLog("Usage:  hf mf cload <file name w/o `.eml`>");\r
                PrintAndLog("   or:  hf mf cload e ");\r
                PrintAndLog("or from emulator memory (option `e`)");\r
                PrintAndLog("Usage:  hf mf cload <file name w/o `.eml`>");\r
                PrintAndLog("   or:  hf mf cload e ");\r
@@ -1527,15 +1588,14 @@ int CmdHF14AMfCLoad(const char *Cmd)
        if (ctmp == 'e' || ctmp == 'E') fillFromEmulator = 1;\r
        \r
        if (fillFromEmulator) {\r
        if (ctmp == 'e' || ctmp == 'E') fillFromEmulator = 1;\r
        \r
        if (fillFromEmulator) {\r
-               flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;\r
                for (blockNum = 0; blockNum < 16 * 4; blockNum += 1) {\r
                        if (mfEmlGetMem(buf8, blockNum, 1)) {\r
                                PrintAndLog("Cant get block: %d", blockNum);\r
                                return 2;\r
                        }\r
                for (blockNum = 0; blockNum < 16 * 4; blockNum += 1) {\r
                        if (mfEmlGetMem(buf8, blockNum, 1)) {\r
                                PrintAndLog("Cant get block: %d", blockNum);\r
                                return 2;\r
                        }\r
-                       \r
-                       if (blockNum == 2) flags = 0;\r
-                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;\r
+                       if (blockNum == 0) flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;                               // switch on field and send magic sequence\r
+                       if (blockNum == 1) flags = 0;                                                                                                   // just write\r
+                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;             // Done. Magic Halt and switch off field.\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Cant set magic card block: %d", blockNum);\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Cant set magic card block: %d", blockNum);\r
@@ -1545,7 +1605,7 @@ int CmdHF14AMfCLoad(const char *Cmd)
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
-               if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+               if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
 \r
                memcpy(filename, Cmd, len);\r
                fnameptr += len;\r
 \r
                memcpy(filename, Cmd, len);\r
                fnameptr += len;\r
@@ -1560,25 +1620,29 @@ int CmdHF14AMfCLoad(const char *Cmd)
                }\r
        \r
                blockNum = 0;\r
                }\r
        \r
                blockNum = 0;\r
-               flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;\r
                while(!feof(f)){\r
                while(!feof(f)){\r
+               \r
                        memset(buf, 0, sizeof(buf));\r
                        memset(buf, 0, sizeof(buf));\r
+                       \r
                        if (fgets(buf, sizeof(buf), f) == NULL) {\r
                        if (fgets(buf, sizeof(buf), f) == NULL) {\r
+                               fclose(f);\r
                                PrintAndLog("File reading error.");\r
                                return 2;\r
                        }\r
 \r
                                PrintAndLog("File reading error.");\r
                                return 2;\r
                        }\r
 \r
-                       if (strlen(buf) < 32){\r
+                       if (strlen(buf) < 32) {\r
                                if(strlen(buf) && feof(f))\r
                                        break;\r
                                PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
                                if(strlen(buf) && feof(f))\r
                                        break;\r
                                PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
+                               fclose(f);\r
                                return 2;\r
                        }\r
                        for (i = 0; i < 32; i += 2)\r
                                sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
 \r
                                return 2;\r
                        }\r
                        for (i = 0; i < 32; i += 2)\r
                                sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
 \r
-                       if (blockNum == 2) flags = 0;\r
-                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;\r
+                       if (blockNum == 0) flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;                               // switch on field and send magic sequence\r
+                       if (blockNum == 1) flags = 0;                                                                                                   // just write\r
+                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;             // Done. Switch off field.\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Can't set magic card block: %d", blockNum);\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Can't set magic card block: %d", blockNum);\r
@@ -1597,6 +1661,7 @@ int CmdHF14AMfCLoad(const char *Cmd)
                PrintAndLog("Loaded from file: %s", filename);\r
                return 0;\r
        }\r
                PrintAndLog("Loaded from file: %s", filename);\r
                return 0;\r
        }\r
+       return 0;\r
 }\r
 \r
 int CmdHF14AMfCGetBlk(const char *Cmd) {\r
 }\r
 \r
 int CmdHF14AMfCGetBlk(const char *Cmd) {\r
@@ -1608,7 +1673,7 @@ int CmdHF14AMfCGetBlk(const char *Cmd) {
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetblk <block number>");\r
                PrintAndLog("sample:  hf mf cgetblk 1");\r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetblk <block number>");\r
                PrintAndLog("sample:  hf mf cgetblk 1");\r
-               PrintAndLog("Get block data from magic Chinese card (only works with!!!)\n");\r
+               PrintAndLog("Get block data from magic Chinese card (only works with such cards)\n");\r
                return 0;\r
        }       \r
 \r
                return 0;\r
        }       \r
 \r
@@ -1628,15 +1693,14 @@ int CmdHF14AMfCGetBlk(const char *Cmd) {
 \r
 \r
 int CmdHF14AMfCGetSc(const char *Cmd) {\r
 \r
 \r
 int CmdHF14AMfCGetSc(const char *Cmd) {\r
-       uint8_t memBlock[16];\r
+       uint8_t memBlock[16] = {0x00};\r
        uint8_t sectorNo = 0;\r
        int i, res, flags;\r
        uint8_t sectorNo = 0;\r
        int i, res, flags;\r
-       memset(memBlock, 0x00, sizeof(memBlock));\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetsc <sector number>");\r
                PrintAndLog("sample:  hf mf cgetsc 0");\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetsc <sector number>");\r
                PrintAndLog("sample:  hf mf cgetsc 0");\r
-               PrintAndLog("Get sector data from magic Chinese card (only works with!!!)\n");\r
+               PrintAndLog("Get sector data from magic Chinese card (only works with such cards)\n");\r
                return 0;\r
        }       \r
 \r
                return 0;\r
        }       \r
 \r
@@ -1710,16 +1774,18 @@ int CmdHF14AMfCSave(const char *Cmd) {
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
-               if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+               if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
        \r
                if (len < 1) {\r
                        // get filename\r
                        if (mfCGetBlock(0, buf, CSETBLOCK_SINGLE_OPER)) {\r
                                PrintAndLog("Cant get block: %d", 0);\r
        \r
                if (len < 1) {\r
                        // get filename\r
                        if (mfCGetBlock(0, buf, CSETBLOCK_SINGLE_OPER)) {\r
                                PrintAndLog("Cant get block: %d", 0);\r
-                               return 1;\r
+                               len = sprintf(fnameptr, "dump");\r
+                               fnameptr += len;\r
+                       } else {\r
+                               for (j = 0; j < 7; j++, fnameptr += 2)\r
+                                       sprintf(fnameptr, "%02x", buf[j]); \r
                        }\r
                        }\r
-                       for (j = 0; j < 7; j++, fnameptr += 2)\r
-                               sprintf(fnameptr, "%02x", buf[j]); \r
                } else {\r
                        memcpy(filename, Cmd, len);\r
                        fnameptr += len;\r
                } else {\r
                        memcpy(filename, Cmd, len);\r
                        fnameptr += len;\r
@@ -1729,7 +1795,7 @@ int CmdHF14AMfCSave(const char *Cmd) {
        \r
                // open file\r
                f = fopen(filename, "w+");\r
        \r
                // open file\r
                f = fopen(filename, "w+");\r
-               \r
+\r
                if (f == NULL) {\r
                        PrintAndLog("File not found or locked.");\r
                        return 1;\r
                if (f == NULL) {\r
                        PrintAndLog("File not found or locked.");\r
                        return 1;\r
@@ -1769,18 +1835,19 @@ int CmdHF14AMfSniff(const char *Cmd){
        int res = 0;\r
        int len = 0;\r
        int blockLen = 0;\r
        int res = 0;\r
        int len = 0;\r
        int blockLen = 0;\r
-       int num = 0;\r
        int pckNum = 0;\r
        int pckNum = 0;\r
+       int num = 0;\r
        uint8_t uid[7];\r
        uint8_t uid_len;\r
        uint8_t uid[7];\r
        uint8_t uid_len;\r
-       uint8_t atqa[2];\r
+       uint8_t atqa[2] = {0x00};\r
        uint8_t sak;\r
        bool isTag;\r
        uint8_t sak;\r
        bool isTag;\r
-       uint8_t buf[3000];\r
-       uint8_t * bufPtr = buf;\r
-       memset(buf, 0x00, 3000);\r
+       uint8_t *buf = NULL;\r
+       uint16_t bufsize = 0;\r
+       uint8_t *bufPtr = NULL;\r
        \r
        \r
-       if (param_getchar(Cmd, 0) == 'h') {\r
+       char ctmp = param_getchar(Cmd, 0);\r
+       if ( ctmp == 'h' || ctmp == 'H' ) {\r
                PrintAndLog("It continuously gets data from the field and saves it to: log, emulator, emulator file.");\r
                PrintAndLog("You can specify:");\r
                PrintAndLog("    l - save encrypted sequence to logfile `uid.log`");\r
                PrintAndLog("It continuously gets data from the field and saves it to: log, emulator, emulator file.");\r
                PrintAndLog("You can specify:");\r
                PrintAndLog("    l - save encrypted sequence to logfile `uid.log`");\r
@@ -1793,7 +1860,7 @@ int CmdHF14AMfSniff(const char *Cmd){
        }       \r
        \r
        for (int i = 0; i < 4; i++) {\r
        }       \r
        \r
        for (int i = 0; i < 4; i++) {\r
-               char ctmp = param_getchar(Cmd, i);\r
+               ctmp = param_getchar(Cmd, i);\r
                if (ctmp == 'l' || ctmp == 'L') wantLogToFile = true;\r
                if (ctmp == 'd' || ctmp == 'D') wantDecrypt = true;\r
                //if (ctmp == 'e' || ctmp == 'E') wantSaveToEml = true; TODO\r
                if (ctmp == 'l' || ctmp == 'L') wantLogToFile = true;\r
                if (ctmp == 'd' || ctmp == 'D') wantDecrypt = true;\r
                //if (ctmp == 'e' || ctmp == 'E') wantSaveToEml = true; TODO\r
@@ -1820,32 +1887,47 @@ int CmdHF14AMfSniff(const char *Cmd){
                        break;\r
                }\r
                \r
                        break;\r
                }\r
                \r
-    UsbCommand resp;\r
-    if (WaitForResponseTimeout(CMD_ACK,&resp,2000)) {\r
+               UsbCommand resp;\r
+               if (WaitForResponseTimeout(CMD_ACK,&resp,2000)) {\r
                        res = resp.arg[0] & 0xff;\r
                        res = resp.arg[0] & 0xff;\r
-                       len = resp.arg[1];\r
-                       num = resp.arg[2];\r
-                       \r
-                       if (res == 0) return 0;\r
-                       if (res == 1) {\r
-                               if (num ==0) {\r
+                       uint16_t traceLen = resp.arg[1];\r
+                       len = resp.arg[2];\r
+\r
+                       if (res == 0) return 0;                                         // we are done\r
+\r
+                       if (res == 1) {                                                         // there is (more) data to be transferred\r
+                               if (pckNum == 0) {                                              // first packet, (re)allocate necessary buffer\r
+                                       if (traceLen > bufsize) {\r
+                                               uint8_t *p;\r
+                                               if (buf == NULL) {                              // not yet allocated\r
+                                                       p = malloc(traceLen);\r
+                                               } else {                                                // need more memory\r
+                                                       p = realloc(buf, traceLen);\r
+                                               }\r
+                                               if (p == NULL) {\r
+                                                       PrintAndLog("Cannot allocate memory for trace");\r
+                                                       free(buf);\r
+                                                       return 2;\r
+                                               }\r
+                                               buf = p;\r
+                                       }\r
                                        bufPtr = buf;\r
                                        bufPtr = buf;\r
-                                       memset(buf, 0x00, 3000);\r
+                                       bufsize = traceLen;\r
+                                       memset(buf, 0x00, traceLen);\r
                                }\r
                                memcpy(bufPtr, resp.d.asBytes, len);\r
                                bufPtr += len;\r
                                pckNum++;\r
                        }\r
                                }\r
                                memcpy(bufPtr, resp.d.asBytes, len);\r
                                bufPtr += len;\r
                                pckNum++;\r
                        }\r
-                       if (res == 2) {\r
+\r
+                       if (res == 2) {                                                         // received all data, start displaying\r
                                blockLen = bufPtr - buf;\r
                                bufPtr = buf;\r
                                printf(">\n");\r
                                PrintAndLog("received trace len: %d packages: %d", blockLen, pckNum);\r
                                blockLen = bufPtr - buf;\r
                                bufPtr = buf;\r
                                printf(">\n");\r
                                PrintAndLog("received trace len: %d packages: %d", blockLen, pckNum);\r
-                               num = 0;\r
                                while (bufPtr - buf < blockLen) {\r
                                while (bufPtr - buf < blockLen) {\r
-                                       bufPtr += 6;\r
+                                       bufPtr += 6;                                            // skip (void) timing information\r
                                        len = *((uint16_t *)bufPtr);\r
                                        len = *((uint16_t *)bufPtr);\r
-\r
                                        if(len & 0x8000) {\r
                                                isTag = true;\r
                                                len &= 0x7fff;\r
                                        if(len & 0x8000) {\r
                                                isTag = true;\r
                                                len &= 0x7fff;\r
@@ -1854,12 +1936,10 @@ int CmdHF14AMfSniff(const char *Cmd){
                                        }\r
                                        bufPtr += 2;\r
                                        if ((len == 14) && (bufPtr[0] == 0xff) && (bufPtr[1] == 0xff) && (bufPtr[12] == 0xff) && (bufPtr[13] == 0xff)) {\r
                                        }\r
                                        bufPtr += 2;\r
                                        if ((len == 14) && (bufPtr[0] == 0xff) && (bufPtr[1] == 0xff) && (bufPtr[12] == 0xff) && (bufPtr[13] == 0xff)) {\r
-                                       \r
                                                memcpy(uid, bufPtr + 2, 7);\r
                                                memcpy(atqa, bufPtr + 2 + 7, 2);\r
                                                uid_len = (atqa[0] & 0xC0) == 0x40 ? 7 : 4;\r
                                                sak = bufPtr[11];\r
                                                memcpy(uid, bufPtr + 2, 7);\r
                                                memcpy(atqa, bufPtr + 2 + 7, 2);\r
                                                uid_len = (atqa[0] & 0xC0) == 0x40 ? 7 : 4;\r
                                                sak = bufPtr[11];\r
-                                               \r
                                                PrintAndLog("tag select uid:%s atqa:0x%02x%02x sak:0x%02x", \r
                                                        sprint_hex(uid + (7 - uid_len), uid_len),\r
                                                        atqa[1], \r
                                                PrintAndLog("tag select uid:%s atqa:0x%02x%02x sak:0x%02x", \r
                                                        sprint_hex(uid + (7 - uid_len), uid_len),\r
                                                        atqa[1], \r
@@ -1877,109 +1957,20 @@ int CmdHF14AMfSniff(const char *Cmd){
                                                        AddLogHex(logHexFileName, isTag ? "TAG: ":"RDR: ", bufPtr, len);\r
                                                if (wantDecrypt) \r
                                                        mfTraceDecode(bufPtr, len, wantSaveToEmlFile);\r
                                                        AddLogHex(logHexFileName, isTag ? "TAG: ":"RDR: ", bufPtr, len);\r
                                                if (wantDecrypt) \r
                                                        mfTraceDecode(bufPtr, len, wantSaveToEmlFile);\r
+                                               num++;  \r
                                        }\r
                                        bufPtr += len;\r
                                        }\r
                                        bufPtr += len;\r
-                                       bufPtr += ((len-1)/8+1); // ignore parity\r
-                                       num++;\r
+                                       bufPtr += ((len-1)/8+1);        // ignore parity\r
                                }\r
                                }\r
+                               pckNum = 0;\r
                        }\r
                } // resp not NULL\r
        } // while (true)\r
                        }\r
                } // resp not NULL\r
        } // while (true)\r
-       \r
+\r
+       free(buf);\r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r
-// Tries to identify cardsize.\r
-// Returns <num>  where num is:\r
-// -1  unidentified\r
-//  0 - MINI (320bytes)\r
-//  1 - 1K\r
-//  2 - 2K\r
-//  4 - 4K\r
-int GetCardSize()\r
-{\r
-       UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT, 0, 0}};\r
-       SendCommand(&c);\r
-\r
-       UsbCommand resp;\r
-       WaitForResponse(CMD_ACK,&resp);\r
-\r
-       if(resp.arg[0] == 0) {\r
-               PrintAndLog("iso14443a card select failed");\r
-               return -1;\r
-       }\r
-       \r
-       iso14a_card_select_t *card = (iso14a_card_select_t *)resp.d.asBytes;\r
-\r
-       PrintAndLog("Trying to detect card size.");\r
-       \r
-       uint16_t atqa = 0;\r
-       uint8_t sak = 0;\r
-       atqa = (card->atqa[1] & 0xff) << 8;\r
-    atqa += card->atqa[0] & 0xff;\r
-       sak = card->sak;\r
-       \r
-       // https://code.google.com/p/libnfc/source/browse/libnfc/target-subr.c\r
-       \r
-       PrintAndLog("found ATAQ: %04X SAK: %02X", atqa, sak);\r
-       \r
-       \r
-       // NXP MIFARE Mini 0.3k\r
-       if ( ( (atqa & 0xff0f) == 0x0004) && (sak == 0x09) ) return 0;\r
-       \r
-       // MIFARE Classic 1K\r
-       if ( ((atqa & 0xff0f) == 0x0004) && (sak == 0x08) ) return 1;\r
-       \r
-       // MIFARE Classik 4K\r
-       if ( ((atqa & 0xff0f) == 0x0002) && (sak == 0x18) ) return 4;\r
-       \r
-       // SmartMX with MIFARE 1K emulation \r
-       if ( ((atqa & 0xf0ff) == 0x0004) ) return 1;\r
-\r
-       // SmartMX with MIFARE 4K emulation \r
-       if ( ((atqa & 0xf0ff) == 0x0002) ) return 4;    \r
-       \r
-       // Infineon MIFARE CLASSIC 1K\r
-       if ( ((atqa & 0xffff) == 0x0004) && (sak == 0x88) ) return 1;\r
-       \r
-       // MFC 4K emulated by Nokia 6212 Classic\r
-       if ( ((atqa & 0xffff) == 0x0002) && (sak == 0x38) ) return 4;\r
-\r
-       // MFC 4K emulated by Nokia 6131 NFC\r
-       if ( ((atqa & 0xffff) == 0x0008) && (sak == 0x38) ) return 4;\r
-\r
-       \r
-       //PrintAndLog("BEFOOO  1K %02X",  (atqa & 0xff0f));\r
-       \r
-       // MIFARE Plus (4 Byte UID or 4 Byte RID)\r
-       // MIFARE Plus (7 Byte UID)\r
-       if (\r
-                       ((atqa & 0xffff) == 0x0002) |\r
-                       ((atqa & 0xffff) == 0x0004) |\r
-                       ((atqa & 0xffff) == 0x0042) |   \r
-                       ((atqa & 0xffff) == 0x0044) \r
-               )\r
-       {\r
-               switch(sak){\r
-                       case 0x08:\r
-                       case 0x10: {\r
-                       //case 0x20:\r
-                               PrintAndLog("2");\r
-                               return 2;\r
-                               break;\r
-                               }\r
-                       case 0x11:\r
-                       case 0x18:{\r
-                       //case 0x20:\r
-                               PrintAndLog("4");\r
-                               return 4;\r
-                               break;\r
-                               }\r
-               }\r
-       }\r
-       \r
-       return -1;\r
-}\r
 \r
 static command_t CommandTable[] =\r
 {\r
 \r
 static command_t CommandTable[] =\r
 {\r
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