ADD: experimantal test of adding "reveng 1.30" source code into the PM3 Client.

[proxmark3-svn] / client / cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 28f7b07820a2929a6252f502bd4ba288e7d9eab8..1b815326e13e26f611a169a059702193455f9b83 100644 (file)
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -434,7 +434,7 @@ 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


@@ -547,7 +547,7 @@ 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


@@ -778,12 +778,14 @@ int CmdHF14AMfNested(const char *Cmd)
 int CmdHF14AMfChk(const char *Cmd)\r
 {\r
        if (strlen(Cmd)<3) {\r
 int CmdHF14AMfChk(const char *Cmd)\r
 {\r
        if (strlen(Cmd)<3) {\r

-               PrintAndLog("Usage:  hf mf chk <block number>|<*card memory> <key type (A/B/?)> [t] [<key (12 hex symbols)>] [<dic (*.dic)>]");\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("          * - 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("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("      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
                return 0;\r
        }       \r
 \r


@@ -1010,12 +1012,16 @@ int CmdHF14AMf1kSim(const char *Cmd)
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = 0;\r
 \r
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = 0;\r
 \r

-       if (param_getchar(Cmd, 0) == 'h') {\r
+       uint8_t cmdp = param_getchar(Cmd, 0);\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


@@ -1196,7 +1202,7 @@ int CmdHF14AMfELoad(const char *Cmd)
        \r
        if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
 \r
        \r
        if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
 \r

-       fnameptr += len;\r
+       fnameptr += len-4;\r

 \r
        sprintf(fnameptr, ".eml"); \r
        \r
 \r
        sprintf(fnameptr, ".eml"); \r
        \r


@@ -1305,7 +1311,7 @@ int CmdHF14AMfESave(const char *Cmd)
                for (j = 0; j < 7; j++, fnameptr += 2)\r
                        sprintf(fnameptr, "%02X", buf[j]); \r
        } else {\r
                for (j = 0; j < 7; j++, fnameptr += 2)\r
                        sprintf(fnameptr, "%02X", buf[j]); \r
        } else {\r

-               fnameptr += len;\r
+               fnameptr += len-4;\r

        }\r
 \r
        // add file extension\r
        }\r
 \r
        // add file extension\r


@@ -1427,27 +1433,60 @@ 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 (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
+       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
        if (res) {\r
                        PrintAndLog("Can't set UID. error=%d", res);\r
                        return 1;\r


@@ -1460,16 +1499,16 @@ 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] = {0x00};\r

        uint8_t memBlock[16] = {0x00};\r
        uint8_t blockNo = 0;\r
        uint8_t memBlock[16] = {0x00};\r
        uint8_t blockNo = 0;\r

+       bool wipeCard = FALSE;\r

        int res;\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
        int res;\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


@@ -1480,15 +1519,15 @@ 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


@@ -1501,13 +1540,10 @@ 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


@@ -1519,15 +1555,14 @@ 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


@@ -1540,7 +1575,7 @@ int CmdHF14AMfCLoad(const char *Cmd)
                if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
 \r
                memcpy(filename, Cmd, len);\r
                if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
 \r
                memcpy(filename, Cmd, len);\r

-               fnameptr += len;\r
+               fnameptr += len-4;\r

 \r
                sprintf(fnameptr, ".eml"); \r
        \r
 \r
                sprintf(fnameptr, ".eml"); \r
        \r


@@ -1552,25 +1587,29 @@ 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
                                PrintAndLog("File reading error.");\r
                        if (fgets(buf, sizeof(buf), f) == NULL) {\r
                                PrintAndLog("File reading error.");\r

+                               fclose(f);\r

                                return 2;\r
                        }\r
 \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


@@ -1589,6 +1628,7 @@ 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


@@ -1600,7 +1640,7 @@ 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


@@ -1627,7 +1667,7 @@ int CmdHF14AMfCGetSc(const char *Cmd) {
        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
        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


@@ -1760,17 +1800,19 @@ 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

-       uint8_t uid[7] = {0x00};\r
+       int num = 0;\r
+       uint8_t uid[7];\r

        uint8_t uid_len;\r
        uint8_t atqa[2] = {0x00};\r
        uint8_t sak;\r
        bool isTag;\r
        uint8_t uid_len;\r
        uint8_t atqa[2] = {0x00};\r
        uint8_t sak;\r
        bool isTag;\r

-       uint8_t buf[3000] = {0x00};\r
-       uint8_t * bufPtr = buf;\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


@@ -1783,7 +1825,7 @@ 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


@@ -1810,32 +1852,47 @@ 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


@@ -1844,12 +1901,10 @@ 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


@@ -1867,18 +1922,21 @@ 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
                                        bufPtr += ((len-1)/8+1);        // ignore parity\r
                                        }\r
                                        bufPtr += len;\r
                                        bufPtr += ((len-1)/8+1);        // ignore parity\r

-                                       num++;\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

+\r

 static command_t CommandTable[] =\r
 {\r
   {"help",             CmdHelp,                                1, "This help"},\r
 static command_t CommandTable[] =\r
 {\r
   {"help",             CmdHelp,                                1, "This help"},\r