rework of GetFromBigBuf() (#597)

[proxmark3-svn] / client / cmdhf.c

diff --git a/client/cmdhf.c b/client/cmdhf.c
index 550f8e86d9b9e94d00aa3e9cf522ef556899334d..4a672255278a74d70062795c64dbc774d9af52d2 100644 (file)
--- a/client/cmdhf.c
+++ b/client/cmdhf.c
@@ -1,5 +1,6 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
 //-----------------------------------------------------------------------------
 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>

+// Merlok - 2017

 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of
 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of


@@ -8,11 +9,15 @@
 // High frequency commands
 //-----------------------------------------------------------------------------
 
 // High frequency commands
 //-----------------------------------------------------------------------------
 

+#include <stdlib.h>

 #include <stdio.h>
 #include <string.h>
 #include "proxmark3.h"
 #include <stdio.h>
 #include <string.h>
 #include "proxmark3.h"

-#include "graph.h"
+#include "util.h"

 #include "ui.h"
 #include "ui.h"

+#include "iso14443crc.h"
+#include "parity.h"
+#include "cmdmain.h"

 #include "cmdparser.h"
 #include "cmdhf.h"
 #include "cmdhf14a.h"
 #include "cmdparser.h"
 #include "cmdhf.h"
 #include "cmdhf14a.h"


@@ -22,6 +27,11 @@
 #include "cmdhflegic.h"
 #include "cmdhficlass.h"
 #include "cmdhfmf.h"
 #include "cmdhflegic.h"
 #include "cmdhficlass.h"
 #include "cmdhfmf.h"

+#include "cmdhfmfu.h"
+#include "cmdhftopaz.h"
+#include "protocols.h"
+#include "emv/cmdemv.h"
+#include "cmdhflist.h"

 
 static int CmdHelp(const char *Cmd);
 
 
 static int CmdHelp(const char *Cmd);
 


@@ -31,100 +41,161 @@ int CmdHFTune(const char *Cmd)
   SendCommand(&c);
   return 0;
 }
   SendCommand(&c);
   return 0;
 }

-// for the time being. Need better Bigbuf handling.
-#define TRACE_SIZE 3000
-
-#define ICLASS_CMD_ACTALL 0x0A
-#define ICLASS_CMD_IDENTIFY 0x0C
-#define ICLASS_CMD_READ 0x0C
-#define ICLASS_CMD_SELECT 0x81
-#define ICLASS_CMD_PAGESEL 0x84
-#define ICLASS_CMD_READCHECK 0x88
-#define ICLASS_CMD_CHECK 0x05
-#define ICLASS_CMD_SOF 0x0F
-#define ICLASS_CMD_HALT 0x00
-
-#define iso14443_CMD_WUPA       0x52
-#define iso14443_CMD_SELECT     0x93
-#define iso14443_CMD_SELECT_2   0x95
-#define iso14443_CMD_REQ        0x26
-#define iso14443_CMD_READBLOCK  0x30
-#define iso14443_CMD_WRITEBLOCK 0xA0
-#define iso14443_CMD_INC        0xC0
-#define iso14443_CMD_DEC        0xC1
-#define iso14443_CMD_RESTORE    0xC2
-#define iso14443_CMD_TRANSFER   0xB0
-#define iso14443_CMD_HALT       0x50
-#define iso14443_CMD_RATS       0xE0
-
-
-void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
+
+/**
+ * @brief iso14443B_CRC_check Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return  0 : CRC-command, CRC not ok
+ *          1 : CRC-command, CRC ok
+ *          2 : Not crc-command
+ */
+
+uint8_t iso14443B_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
+{
+       uint8_t b1,b2;
+
+       if(len <= 2) return 2;
+
+       ComputeCrc14443(CRC_14443_B, data, len-2, &b1, &b2);
+       if(b1 != data[len-2] || b2 != data[len-1]) {
+               return 0;
+       } else {
+               return 1;
+       }
+}
+
+/**
+ * @brief iclass_CRC_Ok Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return  0 : CRC-command, CRC not ok
+ *             1 : CRC-command, CRC ok
+ *          2 : Not crc-command
+ */
+uint8_t iclass_CRC_check(bool isResponse, uint8_t* data, uint8_t len)

 {
 {

-       switch(cmd[0])
+       if(len < 4) return 2;//CRC commands (and responses) are all at least 4 bytes
+
+       uint8_t b1, b2;
+
+       if(!isResponse)//Commands to tag

        {
        {

-       case iso14443_CMD_WUPA:            snprintf(exp,size,"WUPA"); break;
-       case iso14443_CMD_SELECT:{
-               if(cmdsize > 2)
-               {
-                       snprintf(exp,size,"SELECT_UID"); break;
-               }else
+               /**
+                 These commands should have CRC. Total length leftmost
+                 4     READ
+                 4 READ4
+                 12 UPDATE - unsecured, ends with CRC16
+                 14 UPDATE - secured, ends with signature instead
+                 4 PAGESEL
+                 **/
+               if(len == 4 || len == 12)//Covers three of them

                {
                {

-                       snprintf(exp,size,"SELECT_ALL"); break;
+                       //Don't include the command byte
+                       ComputeCrc14443(CRC_ICLASS, (data+1), len-3, &b1, &b2);
+                       return b1 == data[len -2] && b2 == data[len-1];

                }
                }

+               return 2;
+       }else{
+               /**
+               These tag responses should have CRC. Total length leftmost
+
+               10  READ                data[8] crc[2]
+               34  READ4               data[32]crc[2]
+               10  UPDATE      data[8] crc[2]
+               10 SELECT       csn[8] crc[2]
+               10  IDENTIFY  asnb[8] crc[2]
+               10  PAGESEL   block1[8] crc[2]
+               10  DETECT    csn[8] crc[2]
+
+               These should not
+
+               4  CHECK                chip_response[4]
+               8  READCHECK data[8]
+               1  ACTALL    sof[1]
+               1  ACT       sof[1]
+
+               In conclusion, without looking at the command; any response
+               of length 10 or 34 should have CRC
+                 **/
+               if(len != 10 && len != 34) return true;
+
+               ComputeCrc14443(CRC_ICLASS, data, len-2, &b1, &b2);
+               return b1 == data[len -2] && b2 == data[len-1];

        }
        }

-       case iso14443_CMD_SELECT_2:    snprintf(exp,size,"SELECT_2"); break;
-       case iso14443_CMD_REQ:         snprintf(exp,size,"REW"); break;
-       case iso14443_CMD_READBLOCK:   snprintf(exp,size,"READBLOCK(%d)",cmd[1]); break;
-       case iso14443_CMD_WRITEBLOCK:  snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]); break;
-       case iso14443_CMD_INC:         snprintf(exp,size,"INC(%d)",cmd[1]); break;
-       case iso14443_CMD_DEC:         snprintf(exp,size,"DEC(%d)",cmd[1]); break;
-       case iso14443_CMD_RESTORE:     snprintf(exp,size,"RESTORE(%d)",cmd[1]); break;
-       case iso14443_CMD_TRANSFER:    snprintf(exp,size,"TRANSFER(%d)",cmd[1]); break;
-       case iso14443_CMD_HALT:        snprintf(exp,size,"HALT"); break;
-       case iso14443_CMD_RATS:        snprintf(exp,size,"RATS"); break;
-       default:                       snprintf(exp,size,"?"); break;
-       }
-       return;

 }
 
 }
 

-void annotateIclass(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
+
+bool is_last_record(uint16_t tracepos, uint8_t *trace, uint16_t traceLen)

 {
 {

+       return(tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) >= traceLen);
+}

 
 

-       if(cmdsize > 1 && cmd[0] == ICLASS_CMD_READ)
-       {
-                 snprintf(exp,size,"READ(%d)",cmd[1]);
-                 return;
-       }

 
 

-       switch(cmd[0])
-       {
-       case ICLASS_CMD_ACTALL:      snprintf(exp,size,"ACTALL"); break;
-       case ICLASS_CMD_IDENTIFY:    snprintf(exp,size,"IDENTIFY"); break;
-       case ICLASS_CMD_SELECT:      snprintf(exp,size,"SELECT"); break;
-       case ICLASS_CMD_PAGESEL:     snprintf(exp,size,"PAGESEL"); break;
-       case ICLASS_CMD_READCHECK:   snprintf(exp,size,"READCHECK"); break;
-       case ICLASS_CMD_CHECK:       snprintf(exp,size,"CHECK"); break;
-       case ICLASS_CMD_SOF:         snprintf(exp,size,"SOF"); break;
-       case ICLASS_CMD_HALT:        snprintf(exp,size,"HALT"); break;
-       default:                     snprintf(exp,size,"?"); break;
-       }
-       return;
+bool next_record_is_response(uint16_t tracepos, uint8_t *trace)
+{
+       uint16_t next_records_datalen = *((uint16_t *)(trace + tracepos + sizeof(uint32_t) + sizeof(uint16_t)));
+       
+       return(next_records_datalen & 0x8000);

 }
 
 
 }
 
 

+bool merge_topaz_reader_frames(uint32_t timestamp, uint32_t *duration, uint16_t *tracepos, uint16_t traceLen, uint8_t *trace, uint8_t *frame, uint8_t *topaz_reader_command, uint16_t *data_len)
+{
+
+#define MAX_TOPAZ_READER_CMD_LEN       16
+
+       uint32_t last_timestamp = timestamp + *duration;
+
+       if ((*data_len != 1) || (frame[0] == TOPAZ_WUPA) || (frame[0] == TOPAZ_REQA)) return false;
+
+       memcpy(topaz_reader_command, frame, *data_len);
+
+       while (!is_last_record(*tracepos, trace, traceLen) && !next_record_is_response(*tracepos, trace)) {
+               uint32_t next_timestamp = *((uint32_t *)(trace + *tracepos));
+               *tracepos += sizeof(uint32_t);
+               uint16_t next_duration = *((uint16_t *)(trace + *tracepos));
+               *tracepos += sizeof(uint16_t);
+               uint16_t next_data_len = *((uint16_t *)(trace + *tracepos)) & 0x7FFF;
+               *tracepos += sizeof(uint16_t);
+               uint8_t *next_frame = (trace + *tracepos);
+               *tracepos += next_data_len;
+               if ((next_data_len == 1) && (*data_len + next_data_len <= MAX_TOPAZ_READER_CMD_LEN)) {
+                       memcpy(topaz_reader_command + *data_len, next_frame, next_data_len);
+                       *data_len += next_data_len;
+                       last_timestamp = next_timestamp + next_duration;
+               } else {
+                       // rewind and exit
+                       *tracepos = *tracepos - next_data_len - sizeof(uint16_t) - sizeof(uint16_t) - sizeof(uint32_t);
+                       break;
+               }
+               uint16_t next_parity_len = (next_data_len-1)/8 + 1;
+               *tracepos += next_parity_len;
+       }
+
+       *duration = last_timestamp - timestamp;
+       
+       return true;
+}
+

 
 

-uint16_t printTraceLine(uint16_t tracepos, uint8_t* trace, bool iclass, bool showWaitCycles)
+uint16_t printTraceLine(uint16_t tracepos, uint16_t traceLen, uint8_t *trace, uint8_t protocol, bool showWaitCycles, bool markCRCBytes)

 {
        bool isResponse;
 {
        bool isResponse;

-       uint16_t duration, data_len,parity_len;
-
+       uint16_t data_len, parity_len;
+       uint32_t duration;
+       uint8_t topaz_reader_command[9];

        uint32_t timestamp, first_timestamp, EndOfTransmissionTimestamp;
        char explanation[30] = {0};
        uint32_t timestamp, first_timestamp, EndOfTransmissionTimestamp;
        char explanation[30] = {0};

+       uint8_t mfData[32] = {0};
+       size_t mfDataLen = 0;

 
 

+       if (tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) > traceLen) return traceLen;
+       

        first_timestamp = *((uint32_t *)(trace));
        timestamp = *((uint32_t *)(trace + tracepos));
        first_timestamp = *((uint32_t *)(trace));
        timestamp = *((uint32_t *)(trace + tracepos));

-       // Break and stick with current result if buffer was not completely full
-       if (timestamp == 0x44444444) return TRACE_SIZE;

 
        tracepos += 4;
        duration = *((uint16_t *)(trace + tracepos));
 
        tracepos += 4;
        duration = *((uint16_t *)(trace + tracepos));


@@ -140,81 +211,103 @@ uint16_t printTraceLine(uint16_t tracepos, uint8_t* trace, bool iclass, bool sho
        }
        parity_len = (data_len-1)/8 + 1;
 
        }
        parity_len = (data_len-1)/8 + 1;
 

-       if (tracepos + data_len + parity_len >= TRACE_SIZE) {
-               return TRACE_SIZE;
+       if (tracepos + data_len + parity_len > traceLen) {
+               return traceLen;

        }
        }

-

        uint8_t *frame = trace + tracepos;
        tracepos += data_len;
        uint8_t *parityBytes = trace + tracepos;
        tracepos += parity_len;
 
        uint8_t *frame = trace + tracepos;
        tracepos += data_len;
        uint8_t *parityBytes = trace + tracepos;
        tracepos += parity_len;
 

-       //--- Draw the data column
-       char line[16][110];
-       for (int j = 0; j < data_len; j++) {
-               int oddparity = 0x01;
-               int k;
-
-               for (k=0 ; k<8 ; k++) {
-                       oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
+       if (protocol == TOPAZ && !isResponse) {
+               // topaz reader commands come in 1 or 9 separate frames with 7 or 8 Bits each.
+               // merge them:
+               if (merge_topaz_reader_frames(timestamp, &duration, &tracepos, traceLen, trace, frame, topaz_reader_command, &data_len)) {
+                       frame = topaz_reader_command;

                }
                }

+       }
+       
+       //Check the CRC status
+       uint8_t crcStatus = 2;

 
 

-               uint8_t parityBits = parityBytes[j>>3];
-
-               if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
-                       sprintf(line[j/16]+((j%16)*4), "%02x! ", frame[j]);
-               } else {
-                       sprintf(line[j/16]+((j%16)*4), "%02x  ", frame[j]);
+       if (data_len > 2) {
+               switch (protocol) {
+                       case ICLASS:
+                               crcStatus = iclass_CRC_check(isResponse, frame, data_len);
+                               break;
+                       case ISO_14443B:
+                       case TOPAZ:
+                               crcStatus = iso14443B_CRC_check(isResponse, frame, data_len); 
+                               break;
+                       case PROTO_MIFARE:
+                               crcStatus = mifare_CRC_check(isResponse, frame, data_len);
+                               break;
+                       case ISO_14443A:
+                               crcStatus = iso14443A_CRC_check(isResponse, frame, data_len);
+                               break;
+                       default: 
+                               break;

                }
        }
                }
        }

-       //--- Draw the CRC column
-       bool crcError = false;
+       //0 CRC-command, CRC not ok
+       //1 CRC-command, CRC ok
+       //2 Not crc-command

 
 

-       if (data_len > 2) {
-               uint8_t b1, b2;
-               if(iclass)
-               {
-                       if(!isResponse && data_len == 4 ) {
-                               // Rough guess that this is a command from the reader
-                               // For iClass the command byte is not part of the CRC
-                               ComputeCrc14443(CRC_ICLASS, &frame[1], data_len-3, &b1, &b2);
-                       }
-                       else {
-                               // For other data.. CRC might not be applicable (UPDATE commands etc.)
-                               ComputeCrc14443(CRC_ICLASS, frame, data_len-2, &b1, &b2);
-                       }
+       //--- Draw the data column
+       //char line[16][110];
+       char line[16][110];

 
 

-                       if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
-                               crcError = true;
-                       }
+       for (int j = 0; j < data_len && j/16 < 16; j++) {

 
 

-               }else{//Iso 14443a
+               uint8_t parityBits = parityBytes[j>>3];
+               if (protocol != ISO_14443B && (isResponse || protocol == ISO_14443A) && (oddparity8(frame[j]) != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
+                       snprintf(line[j/16]+(( j % 16) * 4),110, "%02x! ", frame[j]);
+               } else {
+                       snprintf(line[j/16]+(( j % 16) * 4), 110, " %02x ", frame[j]);
+               }

 
 

-                       ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
+       }

 
 

-                       if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
-                               if(!(isResponse & (data_len < 6)))
-                               {
-                                               crcError = true;
-                               }
-                       }
+       if (markCRCBytes) {
+               if(crcStatus == 0 || crcStatus == 1)
+               {//CRC-command
+                       char *pos1 = line[(data_len-2)/16]+(((data_len-2) % 16) * 4);
+                       (*pos1) = '[';
+                       char *pos2 = line[(data_len)/16]+(((data_len) % 16) * 4);
+                       sprintf(pos2, "%c", ']');

                }
                }

+       }

 
 

+       if(data_len == 0)
+       {
+               if(data_len == 0){
+                       sprintf(line[0],"<empty trace - possible error>");
+               }

        }
        }

-       char *crc = crcError ? "!crc" :"    ";
+       //--- Draw the CRC column
+
+       char *crc = (crcStatus == 0 ? "!crc" : (crcStatus == 1 ? " ok " : "    "));

 
        EndOfTransmissionTimestamp = timestamp + duration;
 
 
        EndOfTransmissionTimestamp = timestamp + duration;
 

+       if (protocol == PROTO_MIFARE)
+               annotateMifare(explanation, sizeof(explanation), frame, data_len, parityBytes, parity_len, isResponse);
+       

        if(!isResponse)
        {
        if(!isResponse)
        {

-               if(iclass)      annotateIclass(explanation,sizeof(explanation),frame,data_len);
-               else annotateIso14443a(explanation,sizeof(explanation),frame,data_len);
+               switch(protocol) {
+                       case ICLASS:            annotateIclass(explanation,sizeof(explanation),frame,data_len); break;
+                       case ISO_14443A:        annotateIso14443a(explanation,sizeof(explanation),frame,data_len); break;
+                       case ISO_14443B:        annotateIso14443b(explanation,sizeof(explanation),frame,data_len); break;
+                       case TOPAZ:                     annotateTopaz(explanation,sizeof(explanation),frame,data_len); break;
+                       default:                        break;
+               }

        }
 
        }
 

-       int num_lines = (data_len - 1)/16 + 1;
-       for (int j = 0; j < num_lines; j++) {
+       int num_lines = MIN((data_len - 1)/16 + 1, 16);
+       for (int j = 0; j < num_lines ; j++) {

                if (j == 0) {
                if (j == 0) {

-                       PrintAndLog(" %9d | %9d | %s | %-64s| %s| %s",
+                       PrintAndLog(" %10d | %10d | %s |%-64s | %s| %s",

                                (timestamp - first_timestamp),
                                (EndOfTransmissionTimestamp - first_timestamp),
                                (isResponse ? "Tag" : "Rdr"),
                                (timestamp - first_timestamp),
                                (EndOfTransmissionTimestamp - first_timestamp),
                                (isResponse ? "Tag" : "Rdr"),


@@ -222,102 +315,285 @@ uint16_t printTraceLine(uint16_t tracepos, uint8_t* trace, bool iclass, bool sho
                                (j == num_lines-1) ? crc : "    ",
                                (j == num_lines-1) ? explanation : "");
                } else {
                                (j == num_lines-1) ? crc : "    ",
                                (j == num_lines-1) ? explanation : "");
                } else {

-                       PrintAndLog("           |           |     | %-64s| %s| %s",
+                       PrintAndLog("            |            |     |%-64s | %s| %s",

                                line[j],
                                line[j],

-                               (j == num_lines-1)?crc:"    ",
+                               (j == num_lines-1) ? crc : "    ",

                                (j == num_lines-1) ? explanation : "");
                }
        }
                                (j == num_lines-1) ? explanation : "");
                }
        }

-
-       bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
-
-       if (showWaitCycles && !isResponse && next_isResponse) {
-               uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
-               if (next_timestamp != 0x44444444) {
-                       PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
-                               (EndOfTransmissionTimestamp - first_timestamp),
-                               (next_timestamp - first_timestamp),
-                               "   ",
-                               (next_timestamp - EndOfTransmissionTimestamp));
+       
+       if (DecodeMifareData(frame, data_len, parityBytes, isResponse, mfData, &mfDataLen)) {
+               memset(explanation, 0x00, sizeof(explanation));
+               if (!isResponse) {
+                       explanation[0] = '>';
+                       annotateIso14443a(&explanation[1], sizeof(explanation) - 1, mfData, mfDataLen);

                }
                }

+               uint8_t crcc = iso14443A_CRC_check(isResponse, mfData, mfDataLen);
+               PrintAndLog("            |          * | dec |%-64s | %-4s| %s",
+                       sprint_hex(mfData, mfDataLen),
+                       (crcc == 0 ? "!crc" : (crcc == 1 ? " ok " : "    ")),
+                       (true) ? explanation : "");
+       };
+
+       if (is_last_record(tracepos, trace, traceLen)) return traceLen;
+       
+       if (showWaitCycles && !isResponse && next_record_is_response(tracepos, trace)) {
+               uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
+               PrintAndLog(" %10d | %10d | %s | fdt (Frame Delay Time): %d",
+                       (EndOfTransmissionTimestamp - first_timestamp),
+                       (next_timestamp - first_timestamp),
+                       "   ",
+                       (next_timestamp - EndOfTransmissionTimestamp));

        }
        }

+

        return tracepos;
 }
 
        return tracepos;
 }
 

+

 int CmdHFList(const char *Cmd)
 {
        bool showWaitCycles = false;
 int CmdHFList(const char *Cmd)
 {
        bool showWaitCycles = false;

+       bool markCRCBytes = false;
+       bool loadFromFile = false;
+       bool saveToFile = false;
+       char param1 = '\0';
+       char param2 = '\0';
+       char param3 = '\0';

        char type[40] = {0};
        char type[40] = {0};

-       int tlen = param_getstr(Cmd,0,type);
-       char param = param_getchar(Cmd, 1);
+       char filename[FILE_PATH_SIZE];
+       uint8_t protocol = 0;
+       
+       // parse command line
+       int tlen = param_getstr(Cmd, 0, type, sizeof(type));
+       if (param_getlength(Cmd, 1) == 1) {
+               param1 = param_getchar(Cmd, 1);
+       } else {
+               param_getstr(Cmd, 1, filename, sizeof(filename));
+       }
+       if (param_getlength(Cmd, 2) == 1) {
+               param2 = param_getchar(Cmd, 2);
+       } else if (strlen(filename) == 0) {
+               param_getstr(Cmd, 2, filename, sizeof(filename));
+       }
+       if (param_getlength(Cmd, 3) == 1) {
+               param3 = param_getchar(Cmd, 3);
+       } else if (strlen(filename) == 0) {
+               param_getstr(Cmd, 3, filename, sizeof(filename));
+       }
+
+       // Validate param1

        bool errors = false;
        bool errors = false;

-       bool iclass = false;
-       //Validate params
-       if(tlen == 0 || (strcmp(type, "iclass") != 0 && strcmp(type,"14a") != 0))
-       {
+
+       if(tlen == 0) {

                errors = true;
        }
                errors = true;
        }

-       if(param == 'h' || (param !=0 && param != 'f'))
-       {
+
+       if(param1 == 'h'
+                       || (param1 != 0 && param1 != 'f' && param1 != 'c' && param1 != 'l')
+                       || (param2 != 0 && param2 != 'f' && param2 != 'c' && param2 != 'l')
+                       || (param3 != 0 && param3 != 'f' && param3 != 'c' && param3 != 'l')) {
+               errors = true;
+       }
+
+       if(!errors) {
+               if(strcmp(type, "iclass") == 0) {
+                       protocol = ICLASS;
+               } else if(strcmp(type, "mf") == 0) {
+                       protocol = PROTO_MIFARE;
+               } else if(strcmp(type, "14a") == 0) {
+                       protocol = ISO_14443A;
+               } else if(strcmp(type, "14b") == 0)     {
+                       protocol = ISO_14443B;
+               } else if(strcmp(type,"topaz") == 0) {
+                       protocol = TOPAZ;
+               } else if(strcmp(type,"raw") == 0) {
+                       protocol = -1; //No crc, no annotations
+               } else if (strcmp(type, "save") == 0) {
+                       saveToFile = true;
+               } else {
+                       errors = true;
+               }
+       }
+       
+       if (param1 == 'f' || param2 == 'f' || param3 == 'f') {
+               showWaitCycles = true;
+       }
+
+       if (param1 == 'c' || param2 == 'c' || param3 == 'c') {
+               markCRCBytes = true;
+       }
+
+       if (param1 == 'l' || param2 == 'l' || param3 == 'l') {
+               loadFromFile = true;
+       }
+
+       if ((loadFromFile || saveToFile) && strlen(filename) == 0) {

                errors = true;
        }
 
                errors = true;
        }
 

+       if (loadFromFile && saveToFile) {
+               errors = true;
+       }
+       

        if (errors) {
        if (errors) {

-               PrintAndLog("List protocol data in trace buffer.");
-               PrintAndLog("Usage:  hf list [14a|iclass] [f]");
+               PrintAndLog("List or save protocol data.");
+               PrintAndLog("Usage:  hf list <protocol> [f] [c] [l <filename>]");
+               PrintAndLog("        hf list save <filename>");
+               PrintAndLog("    f      - show frame delay times as well");
+               PrintAndLog("    c      - mark CRC bytes");
+               PrintAndLog("    l      - load data from file instead of trace buffer");
+               PrintAndLog("    save   - save data to file");
+               PrintAndLog("Supported <protocol> values:");
+               PrintAndLog("    raw    - just show raw data without annotations");

                PrintAndLog("    14a    - interpret data as iso14443a communications");
                PrintAndLog("    14a    - interpret data as iso14443a communications");

+               PrintAndLog("    mf     - interpret data as iso14443a communications and decrypt crypto1 stream");
+               PrintAndLog("    14b    - interpret data as iso14443b communications");

                PrintAndLog("    iclass - interpret data as iclass communications");
                PrintAndLog("    iclass - interpret data as iclass communications");

-               PrintAndLog("    f      - show frame delay times as well");
+               PrintAndLog("    topaz  - interpret data as topaz communications");

                PrintAndLog("");
                PrintAndLog("example: hf list 14a f");
                PrintAndLog("example: hf list iclass");
                PrintAndLog("");
                PrintAndLog("example: hf list 14a f");
                PrintAndLog("example: hf list iclass");

+               PrintAndLog("example: hf list save myCardTrace.trc");
+               PrintAndLog("example: hf list 14a l myCardTrace.trc");

                return 0;
        }
                return 0;
        }

-       if(strcmp(type, "iclass") == 0)
-       {
-               iclass = true;
-       }

 
 

-       if (param == 'f') {
-               showWaitCycles = true;
+
+       uint8_t *trace;
+       uint32_t tracepos = 0;
+       uint32_t traceLen = 0;
+       
+       if (loadFromFile) {
+               #define TRACE_CHUNK_SIZE (1<<16)                // 64K to start with. Will be enough for BigBuf and some room for future extensions
+               FILE *tracefile = NULL;
+               size_t bytes_read;
+               trace = malloc(TRACE_CHUNK_SIZE);
+               if (trace == NULL) {
+                       PrintAndLog("Cannot allocate memory for trace");
+                       return 2;
+               }
+               if ((tracefile = fopen(filename,"rb")) == NULL) { 
+                       PrintAndLog("Could not open file %s", filename);
+                       free(trace);
+                       return 0;
+               }
+               while (!feof(tracefile)) {
+                       bytes_read = fread(trace+traceLen, 1, TRACE_CHUNK_SIZE, tracefile);
+                       traceLen += bytes_read;
+                       if (!feof(tracefile)) {
+                               uint8_t *p = realloc(trace, traceLen + TRACE_CHUNK_SIZE);
+                               if (p == NULL) {
+                                       PrintAndLog("Cannot allocate memory for trace");
+                                       free(trace);
+                                       fclose(tracefile);
+                                       return 2;
+                               }
+                               trace = p;
+                       }
+               }
+               fclose(tracefile);
+       } else {
+               trace = malloc(USB_CMD_DATA_SIZE);
+               // Query for the size of the trace
+               UsbCommand response;
+               GetFromBigBuf(trace, USB_CMD_DATA_SIZE, 0, &response, -1, false);
+               traceLen = response.arg[2];
+               if (traceLen > USB_CMD_DATA_SIZE) {
+                       uint8_t *p = realloc(trace, traceLen);
+                       if (p == NULL) {
+                               PrintAndLog("Cannot allocate memory for trace");
+                               free(trace);
+                               return 2;
+                       }
+                       trace = p;
+                       GetFromBigBuf(trace, traceLen, 0, NULL, -1, false);
+               }

        }
 
        }
 

+       if (saveToFile) {
+               FILE *tracefile = NULL;
+               if ((tracefile = fopen(filename,"wb")) == NULL) { 
+                       PrintAndLog("Could not create file %s", filename);
+                       return 1;
+               }
+               fwrite(trace, 1, traceLen, tracefile);
+               PrintAndLog("Recorded Activity (TraceLen = %d bytes) written to file %s", traceLen, filename);
+               fclose(tracefile);
+       } else {
+               PrintAndLog("Recorded Activity (TraceLen = %d bytes)", traceLen);
+               PrintAndLog("");
+               PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
+               PrintAndLog("iso14443a - All times are in carrier periods (1/13.56Mhz)");
+               PrintAndLog("iClass    - Timings are not as accurate");
+               PrintAndLog("");
+               PrintAndLog("      Start |        End | Src | Data (! denotes parity error)                                   | CRC | Annotation         |");
+               PrintAndLog("------------|------------|-----|-----------------------------------------------------------------|-----|--------------------|");

 
 

-       uint8_t trace[TRACE_SIZE];
-       uint16_t tracepos = 0;
-       GetFromBigBuf(trace, TRACE_SIZE, 0);
-       WaitForResponse(CMD_ACK, NULL);
+               ClearAuthData();
+               while(tracepos < traceLen)
+               {
+                       tracepos = printTraceLine(tracepos, traceLen, trace, protocol, showWaitCycles, markCRCBytes);
+               }
+       }

 
 

-       PrintAndLog("Recorded Activity");
-       PrintAndLog("");
-       PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
-       PrintAndLog("iso14443a - All times are in carrier periods (1/13.56Mhz)");
-       PrintAndLog("iClass    - Timings are not as accurate");
-       PrintAndLog("");
-       PrintAndLog("     Start |       End | Src | Data (! denotes parity error)                                   | CRC | Annotation         |");
-       PrintAndLog("-----------|-----------|-----|-----------------------------------------------------------------|-----|--------------------|");
+       free(trace);
+       return 0;
+}

 
 

-       while(tracepos < TRACE_SIZE)
-       {
-               tracepos = printTraceLine(tracepos, trace, iclass, showWaitCycles);
+int CmdHFSearch(const char *Cmd){
+       int ans = 0;
+       PrintAndLog("");
+       ans = CmdHF14AInfo("s");
+       if (ans > 0) {
+               PrintAndLog("\nValid ISO14443A Tag Found - Quiting Search\n");
+               return ans;
+       }
+       ans = HFiClassReader("", false, false);
+       if (ans) {
+               PrintAndLog("\nValid iClass Tag (or PicoPass Tag) Found - Quiting Search\n");
+               return ans;
+       }
+       ans = HF15Reader("", false);
+       if (ans) {
+               PrintAndLog("\nValid ISO15693 Tag Found - Quiting Search\n");
+               return ans;
+       }
+       //14b is longest test currently (and rarest chip type) ... put last
+       ans = HF14BInfo(false);
+       if (ans) {
+               PrintAndLog("\nValid ISO14443B Tag Found - Quiting Search\n");
+               return ans;

        }
        }

+       PrintAndLog("\nno known/supported 13.56 MHz tags found\n");

        return 0;
 }
 
        return 0;
 }
 

+int CmdHFSnoop(const char *Cmd)
+{
+       char * pEnd;
+       UsbCommand c = {CMD_HF_SNIFFER, {strtol(Cmd, &pEnd,0),strtol(pEnd, &pEnd,0),0}};
+       SendCommand(&c);
+       return 0;
+}

 
 static command_t CommandTable[] = 
 {
 
 static command_t CommandTable[] = 
 {

-  {"help",        CmdHelp,          1, "This help"},
-  {"14a",         CmdHF14A,         1, "{ ISO14443A RFIDs... }"},
-  {"14b",         CmdHF14B,         1, "{ ISO14443B RFIDs... }"},
-  {"15",          CmdHF15,          1, "{ ISO15693 RFIDs... }"},
-  {"epa",         CmdHFEPA,         1, "{ German Identification Card... }"},
-  {"legic",       CmdHFLegic,       0, "{ LEGIC RFIDs... }"},
-  {"iclass",      CmdHFiClass,      1, "{ ICLASS RFIDs... }"},
-  {"mf",               CmdHFMF,                1, "{ MIFARE RFIDs... }"},
-  {"tune",        CmdHFTune,        0, "Continuously measure HF antenna tuning"},
-  {"list",       CmdHFList,         1, "List protocol data in trace buffer"},
-       {NULL, NULL, 0, NULL}
+       {"help",        CmdHelp,                1, "This help"},
+       {"14a",         CmdHF14A,               1, "{ ISO14443A RFIDs... }"},
+       {"14b",         CmdHF14B,               1, "{ ISO14443B RFIDs... }"},
+       {"15",          CmdHF15,                1, "{ ISO15693 RFIDs... }"},
+       {"epa",         CmdHFEPA,               1, "{ German Identification Card... }"},
+       {"emv",         CmdHFEMV,               1, "{ EMV cards... }"},
+       {"legic",       CmdHFLegic,             0, "{ LEGIC RFIDs... }"},
+       {"iclass",      CmdHFiClass,    1, "{ ICLASS RFIDs... }"},
+       {"mf",          CmdHFMF,                1, "{ MIFARE RFIDs... }"},
+       {"mfu",         CmdHFMFUltra,   1, "{ MIFARE Ultralight RFIDs... }"},
+       {"topaz",       CmdHFTopaz,             1, "{ TOPAZ (NFC Type 1) RFIDs... }"},
+       {"tune",        CmdHFTune,              0, "Continuously measure HF antenna tuning"},
+       {"list",        CmdHFList,              1, "List protocol data in trace buffer"},
+       {"search",      CmdHFSearch,    1, "Search for known HF tags [preliminary]"},
+       {"snoop",   CmdHFSnoop,     0, "<samples to skip (10000)> <triggers to skip (1)> Generic HF Snoop"},
+       {NULL,          NULL,                   0, NULL}

 };
 
 int CmdHF(const char *Cmd)
 };
 
 int CmdHF(const char *Cmd)