modify argtable parser to parse ints with spaces (#683)

[proxmark3-svn] / client / cmdhf14a.c

diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index cba179ec75cf55ae03a268525f0b0d1d00afb002..94eb8ff3511ffc59fdc5692ae8d056d26c9ab7a3 100644 (file)
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

-// 2011, Merlok
+// 2011, 2017 Merlok

 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,


@@ -9,24 +9,31 @@
 // High frequency ISO14443A commands
 //-----------------------------------------------------------------------------
 
 // High frequency ISO14443A commands
 //-----------------------------------------------------------------------------
 

+#include "cmdhf14a.h"
+

 #include <stdio.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdlib.h>

+#include <inttypes.h>

 #include <string.h>
 #include <unistd.h>
 #include <string.h>
 #include <unistd.h>

+#include <ctype.h>

 #include "util.h"
 #include "util.h"

+#include "util_posix.h"

 #include "iso14443crc.h"
 #include "iso14443crc.h"

-#include "data.h"
-#include "proxmark3.h"
+#include "comms.h"

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

-#include "cmdhf14a.h"

 #include "common.h"
 #include "cmdmain.h"
 #include "mifare.h"
 #include "cmdhfmfu.h"
 #include "common.h"
 #include "cmdmain.h"
 #include "mifare.h"
 #include "cmdhfmfu.h"

+#include "mifarehost.h"
+#include "cliparser/cliparser.h"
+#include "emv/apduinfo.h"
+#include "emv/emvcore.h"

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

-static void waitCmd(uint8_t iLen);
+static int waitCmd(uint8_t iLen);

 
 // structure and database for uid -> tagtype lookups 
 typedef struct { 
 
 // structure and database for uid -> tagtype lookups 
 typedef struct { 


@@ -34,7 +41,7 @@ typedef struct {
        char* desc;
 } manufactureName; 
 
        char* desc;
 } manufactureName; 
 

-const manufactureName manufactureMapping[] = {
+static const manufactureName manufactureMapping[] = {

        // ID,  "Vendor Country"
        { 0x01, "Motorola UK" },
        { 0x02, "ST Microelectronics SA France" },
        // ID,  "Vendor Country"
        { 0x01, "Motorola UK" },
        { 0x02, "ST Microelectronics SA France" },


@@ -107,7 +114,6 @@ const manufactureName manufactureMapping[] = {
        { 0x00, "no tag-info available" } // must be the last entry
 };
 
        { 0x00, "no tag-info available" } // must be the last entry
 };
 

-

 // get a product description based on the UID
 //             uid[8]  tag uid
 // returns description of the best match       
 // get a product description based on the UID
 //             uid[8]  tag uid
 // returns description of the best match       


@@ -130,7 +136,78 @@ int CmdHF14AList(const char *Cmd)
        return 0;
 }
 
        return 0;
 }
 

-int CmdHF14AReader(const char *Cmd)
+int CmdHF14AReader(const char *Cmd) {
+       uint32_t cm = ISO14A_CONNECT;
+       bool leaveSignalON = false;
+       
+       CLIParserInit("hf 14a reader", "Executes ISO1443A anticollision-select group of commands.", NULL);
+       void* argtable[] = {
+               arg_param_begin,
+               arg_lit0("kK",  "keep",    "keep the field active after command executed"),
+               arg_lit0("xX",  "drop",    "just drop the signal field"),
+               arg_lit0("3",   NULL,      "ISO14443-3 select only (skip RATS)"),
+               arg_param_end
+       };
+       if (CLIParserParseString(Cmd, argtable, arg_getsize(argtable), true)){
+               CLIParserFree();
+               return 0;
+       }
+       
+       leaveSignalON = arg_get_lit(1);
+       if (arg_get_lit(2)) {
+               cm = cm - ISO14A_CONNECT;
+       }
+       if (arg_get_lit(3)) {
+               cm |= ISO14A_NO_RATS;
+       }
+       
+       CLIParserFree();
+       
+       if (leaveSignalON)
+               cm |= ISO14A_NO_DISCONNECT; 
+       
+       UsbCommand c = {CMD_READER_ISO_14443a, {cm, 0, 0}};
+       SendCommand(&c);
+
+       if (ISO14A_CONNECT & cm) {
+               UsbCommand resp;
+               WaitForResponse(CMD_ACK,&resp);
+               
+               iso14a_card_select_t card;
+               memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t));
+
+               uint64_t select_status = resp.arg[0];           // 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS, 3: proprietary Anticollision
+               
+               if(select_status == 0) {
+                       PrintAndLog("iso14443a card select failed");
+                       return 1;
+               }
+
+               if(select_status == 3) {
+                       PrintAndLog("Card doesn't support standard iso14443-3 anticollision");
+                       PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
+                       return 1;
+               }
+
+               PrintAndLog(" UID : %s", sprint_hex(card.uid, card.uidlen));
+               PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
+               PrintAndLog(" SAK : %02x [%" PRIu64 "]", card.sak, resp.arg[0]);
+               if(card.ats_len >= 3) {                 // a valid ATS consists of at least the length byte (TL) and 2 CRC bytes
+                       PrintAndLog(" ATS : %s", sprint_hex(card.ats, card.ats_len));
+               }
+               if (leaveSignalON) {
+                       PrintAndLog("Card is selected. You can now start sending commands");
+               }
+       }
+
+       if (!leaveSignalON) {
+               PrintAndLog("Field dropped.");
+       }
+       
+       return 0;
+}
+
+int CmdHF14AInfo(const char *Cmd)

 {
        UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
        SendCommand(&c);
 {
        UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
        SendCommand(&c);


@@ -166,10 +243,12 @@ int CmdHF14AReader(const char *Cmd)
 
        PrintAndLog(" UID : %s", sprint_hex(card.uid, card.uidlen));
        PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
 
        PrintAndLog(" UID : %s", sprint_hex(card.uid, card.uidlen));
        PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);

-       PrintAndLog(" SAK : %02x [%d]", card.sak, resp.arg[0]);
+       PrintAndLog(" SAK : %02x [%" PRIu64 "]", card.sak, resp.arg[0]);

 
 

+       bool isMifareClassic = true;

        switch (card.sak) {
                case 0x00: 
        switch (card.sak) {
                case 0x00: 

+                       isMifareClassic = false;

 
                        //***************************************test****************
                        // disconnect
 
                        //***************************************test****************
                        // disconnect


@@ -352,16 +431,16 @@ int CmdHF14AReader(const char *Cmd)
                                                PrintAndLog("                     x0 -> <1 kByte");
                                                break;
                                        case 0x01:
                                                PrintAndLog("                     x0 -> <1 kByte");
                                                break;
                                        case 0x01:

-                                               PrintAndLog("                     x0 -> 1 kByte");
+                                               PrintAndLog("                     x1 -> 1 kByte");

                                                break;
                                        case 0x02:
                                                break;
                                        case 0x02:

-                                               PrintAndLog("                     x0 -> 2 kByte");
+                                               PrintAndLog("                     x2 -> 2 kByte");

                                                break;
                                        case 0x03:
                                                break;
                                        case 0x03:

-                                               PrintAndLog("                     x0 -> 4 kByte");
+                                               PrintAndLog("                     x3 -> 4 kByte");

                                                break;
                                        case 0x04:
                                                break;
                                        case 0x04:

-                                               PrintAndLog("                     x0 -> 8 kByte");
+                                               PrintAndLog("                     x4 -> 8 kByte");

                                                break;
                                }
                                switch (card.ats[pos + 3] & 0xf0) {
                                                break;
                                }
                                switch (card.ats[pos + 3] & 0xf0) {


@@ -402,22 +481,21 @@ int CmdHF14AReader(const char *Cmd)
 
        
        // try to see if card responses to "chinese magic backdoor" commands.
 
        
        // try to see if card responses to "chinese magic backdoor" commands.

-       c.cmd = CMD_MIFARE_CIDENT;
-       c.arg[0] = 0;
-       c.arg[1] = 0;
-       c.arg[2] = 0;   
-       SendCommand(&c);
-       WaitForResponse(CMD_ACK,&resp);
-       uint8_t isOK  = resp.arg[0] & 0xff;
-       PrintAndLog("Answers to chinese magic backdoor commands: %s", (isOK ? "YES" : "NO") );
+       (void)mfCIdentify();
+       
+       if (isMifareClassic) {          
+               switch(DetectClassicPrng()) {
+               case 0:
+                       PrintAndLog("Prng detection: HARDENED (hardnested)");           
+                       break;
+               case 1:
+                       PrintAndLog("Prng detection: WEAK");
+                       break;
+               default:
+                       PrintAndLog("Prng detection error.");           
+               }
+       }

        
        

-       // disconnect
-       c.cmd = CMD_READER_ISO_14443a;
-       c.arg[0] = 0;
-       c.arg[1] = 0;
-       c.arg[2] = 0;
-       SendCommand(&c);
-

        return select_status;
 }
 
        return select_status;
 }
 


@@ -430,11 +508,11 @@ int CmdHF14ACUIDs(const char *Cmd)
        n = n > 0 ? n : 1;
 
        PrintAndLog("Collecting %d UIDs", n);
        n = n > 0 ? n : 1;
 
        PrintAndLog("Collecting %d UIDs", n);

-       PrintAndLog("Start: %u", time(NULL));
+       PrintAndLog("Start: %" PRIu64, msclock()/1000);

        // repeat n times
        for (int i = 0; i < n; i++) {
                // execute anticollision procedure
        // repeat n times
        for (int i = 0; i < n; i++) {
                // execute anticollision procedure

-               UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT, 0, 0}};
+               UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_RATS, 0, 0}};

                SendCommand(&c);
     
                UsbCommand resp;
                SendCommand(&c);
     
                UsbCommand resp;


@@ -453,7 +531,7 @@ int CmdHF14ACUIDs(const char *Cmd)
                        PrintAndLog("%s", uid_string);
                }
        }
                        PrintAndLog("%s", uid_string);
                }
        }

-       PrintAndLog("End: %u", time(NULL));
+       PrintAndLog("End: %" PRIu64, msclock()/1000);

 
        return 1;
 }
 
        return 1;
 }


@@ -490,7 +568,7 @@ int CmdHF14ASim(const char *Cmd)
 
        // Are we handling the (optional) second part uid?
        if (long_uid > 0xffffffff) {
 
        // Are we handling the (optional) second part uid?
        if (long_uid > 0xffffffff) {

-               PrintAndLog("Emulating ISO/IEC 14443 type A tag with 7 byte UID (%014"llx")",long_uid);
+               PrintAndLog("Emulating ISO/IEC 14443 type A tag with 7 byte UID (%014" PRIx64 ")",long_uid);

                // Store the second part
                c.arg[2] = (long_uid & 0xffffffff);
                long_uid >>= 32;
                // Store the second part
                c.arg[2] = (long_uid & 0xffffffff);
                long_uid >>= 32;


@@ -560,179 +638,288 @@ int CmdHF14ASnoop(const char *Cmd) {
                if (ctmp == 'r' || ctmp == 'R') param |= 0x02;
        }
 
                if (ctmp == 'r' || ctmp == 'R') param |= 0x02;
        }
 

-  UsbCommand c = {CMD_SNOOP_ISO_14443a, {param, 0, 0}};
-  SendCommand(&c);
-  return 0;
+       UsbCommand c = {CMD_SNOOP_ISO_14443a, {param, 0, 0}};
+       SendCommand(&c);
+       return 0;
+}
+
+void DropField() {
+       UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}}; 
+       SendCommand(&c);

 }
 
 }
 

+int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {
+       uint16_t cmdc = 0;
+       
+       if (activateField) {
+               cmdc |= ISO14A_CONNECT | ISO14A_CLEAR_TRACE;
+       }
+       if (leaveSignalON)
+               cmdc |= ISO14A_NO_DISCONNECT;
+
+       // "Command APDU" length should be 5+255+1, but javacard's APDU buffer might be smaller - 133 bytes
+       // https://stackoverflow.com/questions/32994936/safe-max-java-card-apdu-data-command-and-respond-size
+       // here length USB_CMD_DATA_SIZE=512
+       // timeout must be authomatically set by "get ATS"
+       UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_APDU | cmdc, (datainlen & 0xFFFF), 0}}; 
+       memcpy(c.d.asBytes, datain, datainlen);
+       SendCommand(&c);
+       
+    uint8_t *recv;
+    UsbCommand resp;

 
 

-int CmdHF14ACmdRaw(const char *cmd) {
-    UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
-    bool reply=1;
-    bool crc = FALSE;
-    bool power = FALSE;
-    bool active = FALSE;
-    bool active_select = FALSE;
-    uint16_t numbits = 0;
-       bool bTimeout = FALSE;
-       uint32_t timeout = 0;
-       bool topazmode = FALSE;
-    char buf[5]="";
-    int i = 0;
-    uint8_t data[USB_CMD_DATA_SIZE];
-       uint16_t datalen = 0;
-       uint32_t temp;
-
-    if (strlen(cmd)<2) {
-        PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-f] [-b] [-t] <number of bits> <0A 0B 0C ... hex>");
-        PrintAndLog("       -r    do not read response");
-        PrintAndLog("       -c    calculate and append CRC");
-        PrintAndLog("       -p    leave the signal field ON after receive");
-        PrintAndLog("       -a    active signal field ON without select");
-        PrintAndLog("       -s    active signal field ON with select");
-        PrintAndLog("       -b    number of bits to send. Useful for send partial byte");
-               PrintAndLog("       -t    timeout in ms");
-               PrintAndLog("       -T    use Topaz protocol to send command");
-        return 0;
+       if (activateField) {
+               if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
+                       PrintAndLog("APDU ERROR: Proxmark connection timeout.");
+                       return 1;
+               }
+               if (resp.arg[0] != 1) {
+                       PrintAndLog("APDU ERROR: Proxmark error %d.", resp.arg[0]);
+                       return 1;
+               }
+       }
+
+    if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
+        recv = resp.d.asBytes;
+        int iLen = resp.arg[0];
+               
+               *dataoutlen = iLen - 2;
+               if (*dataoutlen < 0)
+                       *dataoutlen = 0;
+               
+               if (maxdataoutlen && *dataoutlen > maxdataoutlen) {
+                       PrintAndLog("APDU ERROR: Buffer too small(%d). Needs %d bytes", *dataoutlen, maxdataoutlen);
+                       return 2;
+               }
+               
+               memcpy(dataout, recv, *dataoutlen);
+               
+        if(!iLen) {
+                       PrintAndLog("APDU ERROR: No APDU response.");
+            return 1;
+               }
+
+               // check block TODO
+               if (iLen == -2) {
+                       PrintAndLog("APDU ERROR: Block type mismatch.");
+                       return 2;
+               }
+               
+               // CRC Check
+               if (iLen == -1) {
+                       PrintAndLog("APDU ERROR: ISO 14443A CRC error.");
+                       return 3;
+               }
+
+               // check apdu length
+               if (iLen < 4) {
+                       PrintAndLog("APDU ERROR: Small APDU response. Len=%d", iLen);
+                       return 2;
+               }
+               
+    } else {
+        PrintAndLog("APDU ERROR: Reply timeout.");
+               return 4;

     }
     }

+       
+       return 0;
+}

 
 

+// ISO14443-4. 7. Half-duplex block transmission protocol
+int CmdHF14AAPDU(const char *cmd) {
+       uint8_t data[USB_CMD_DATA_SIZE];
+       int datalen = 0;
+       bool activateField = false;
+       bool leaveSignalON = false;
+       bool decodeTLV = false;
+
+       CLIParserInit("hf 14a apdu", 
+               "Sends an ISO 7816-4 APDU via ISO 14443-4 block transmission protocol (T=CL)", 
+               "Sample:\n\thf 14a apdu -st 00A404000E325041592E5359532E444446303100\n");
+
+       void* argtable[] = {
+               arg_param_begin,
+               arg_lit0("sS",  "select",  "activate field and select card"),
+               arg_lit0("kK",  "keep",    "leave the signal field ON after receive response"),
+               arg_lit0("tT",  "tlv",     "executes TLV decoder if it possible"),
+               arg_strx1(NULL, NULL,      "<APDU (hex)>", NULL),
+               arg_param_end
+       };
+       CLIExecWithReturn(cmd, argtable, false);

        
        

-    // strip
-    while (*cmd==' ' || *cmd=='\t') cmd++;
-
-    while (cmd[i]!='\0') {
-        if (cmd[i]==' ' || cmd[i]=='\t') { i++; continue; }
-        if (cmd[i]=='-') {
-            switch (cmd[i+1]) {
-                case 'r': 
-                    reply = FALSE;
-                    break;
-                case 'c':
-                    crc = TRUE;
-                    break;
-                case 'p':
-                    power = TRUE;
-                    break;
-                case 'a':
-                    active = TRUE;
-                    break;
-                case 's':
-                    active_select = TRUE;
-                    break;
-                case 'b': 
-                    sscanf(cmd+i+2,"%d",&temp);
-                    numbits = temp & 0xFFFF;
-                    i+=3;
-                    while(cmd[i]!=' ' && cmd[i]!='\0') { i++; }
-                    i-=2;
-                    break;
-                               case 't':
-                                       bTimeout = TRUE;
-                                       sscanf(cmd+i+2,"%d",&temp);
-                                       timeout = temp;
-                                       i+=3;
-                                       while(cmd[i]!=' ' && cmd[i]!='\0') { i++; }
-                                       i-=2;
-                                       break;
-                case 'T':
-                                       topazmode = TRUE;
-                                       break;
-                default:
-                    PrintAndLog("Invalid option");
-                    return 0;
-            }
-            i+=2;
-            continue;
-        }
-        if ((cmd[i]>='0' && cmd[i]<='9') ||
-            (cmd[i]>='a' && cmd[i]<='f') ||
-            (cmd[i]>='A' && cmd[i]<='F') ) {
-            buf[strlen(buf)+1]=0;
-            buf[strlen(buf)]=cmd[i];
-            i++;
-
-            if (strlen(buf)>=2) {
-                sscanf(buf,"%x",&temp);
-                data[datalen]=(uint8_t)(temp & 0xff);
-                *buf=0;
-                               if (++datalen>sizeof(data)){
-                                       if (crc)
-                                               PrintAndLog("Buffer is full, we can't add CRC to your data");
-                                       break;
-                               }
-            }
-            continue;
-        }
-        PrintAndLog("Invalid char on input");
-        return 0;
-    }
+       activateField = arg_get_lit(1);
+       leaveSignalON = arg_get_lit(2);
+       decodeTLV = arg_get_lit(3);
+       // len = data + PCB(1b) + CRC(2b)
+       CLIGetStrBLessWithReturn(4, data, &datalen, 1 + 2);
+
+
+       CLIParserFree();
+//     PrintAndLog("---str [%d] %s", arg_get_str(4)->count, arg_get_str(4)->sval[0]);
+       PrintAndLog(">>>>[%s%s%s] %s", activateField ? "sel ": "", leaveSignalON ? "keep ": "", decodeTLV ? "TLV": "", sprint_hex(data, datalen));
+       
+       int res = ExchangeAPDU14a(data, datalen, activateField, leaveSignalON, data, USB_CMD_DATA_SIZE, &datalen);
+
+       if (res)
+               return res;

 
 

-    if(crc && datalen>0 && datalen<sizeof(data)-2)
-    {
-        uint8_t first, second;
+       PrintAndLog("<<<< %s", sprint_hex(data, datalen));
+       
+       PrintAndLog("APDU response: %02x %02x - %s", data[datalen - 2], data[datalen - 1], GetAPDUCodeDescription(data[datalen - 2], data[datalen - 1])); 
+
+       // TLV decoder
+       if (decodeTLV && datalen > 4) {
+               TLVPrintFromBuffer(data, datalen - 2);
+       }
+       
+       return 0;
+}
+
+int CmdHF14ACmdRaw(const char *cmd) {
+       UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
+       bool reply=1;
+       bool crc = false;
+       bool power = false;
+       bool active = false;
+       bool active_select = false;
+       bool no_rats = false;
+       uint16_t numbits = 0;
+       bool bTimeout = false;
+       uint32_t timeout = 0;
+       bool topazmode = false;
+       uint8_t data[USB_CMD_DATA_SIZE];
+       int datalen = 0;
+
+       // extract parameters
+       CLIParserInit("hf 14a raw", "Send raw hex data to tag", 
+               "Sample:\n"\
+               "\thf 14a raw -pa -b7 -t1000 52  -- execute WUPA\n"\
+               "\thf 14a raw -p 9320            -- anticollision\n"\
+               "\thf 14a raw -psc 60 00         -- select and mifare AUTH\n");
+       void* argtable[] = {
+               arg_param_begin,
+               arg_lit0("rR",  "nreply",  "do not read response"),
+               arg_lit0("cC",  "crc",     "calculate and append CRC"),
+               arg_lit0("pP",  "power",   "leave the signal field ON after receive"),
+               arg_lit0("aA",  "active",  "active signal field ON without select"),
+               arg_lit0("sS",  "actives", "active signal field ON with select"),
+               arg_int0("bB",  "bits",    NULL, "number of bits to send. Useful for send partial byte"),
+               arg_int0("t",   "timeout", NULL, "timeout in ms"),
+               arg_lit0("T",   "topaz",   "use Topaz protocol to send command"),
+               arg_lit0("3",   NULL,      "ISO14443-3 select only (skip RATS)"),
+               arg_strx1(NULL, NULL,      "<data (hex)>", NULL),
+               arg_param_end
+       };
+       // defaults
+       arg_get_int(6) = 0;
+       arg_get_int(7) = 0;
+       
+       if (CLIParserParseString(cmd, argtable, arg_getsize(argtable), false)){
+               CLIParserFree();
+               return 0;
+       }
+       
+       reply = !arg_get_lit(1);
+       crc = arg_get_lit(2);
+       power = arg_get_lit(3);
+       active = arg_get_lit(4);
+       active_select = arg_get_lit(5);
+       numbits = arg_get_int(6) & 0xFFFF;
+       timeout = arg_get_int(7);
+       bTimeout = (timeout > 0);       
+       topazmode = arg_get_lit(8);
+       no_rats = arg_get_lit(9);
+       // len = data + CRC(2b)
+       if (CLIParamHexToBuf(arg_get_str(10), data, sizeof(data) -2, &datalen)) {
+               CLIParserFree();
+               return 1;
+       }
+       
+       CLIParserFree();        
+       
+       // logic 
+       if(crc && datalen>0 && datalen<sizeof(data)-2)
+       {
+               uint8_t first, second;

                if (topazmode) {
                        ComputeCrc14443(CRC_14443_B, data, datalen, &first, &second);
                } else {
                        ComputeCrc14443(CRC_14443_A, data, datalen, &first, &second);
                }
                if (topazmode) {
                        ComputeCrc14443(CRC_14443_B, data, datalen, &first, &second);
                } else {
                        ComputeCrc14443(CRC_14443_A, data, datalen, &first, &second);
                }

-        data[datalen++] = first;
-        data[datalen++] = second;
-    }
+               data[datalen++] = first;
+               data[datalen++] = second;
+       }

 
 

-    if(active || active_select)
-    {
-        c.arg[0] |= ISO14A_CONNECT;
-        if(active)
-            c.arg[0] |= ISO14A_NO_SELECT;
-    }
+       if(active || active_select)
+       {
+               c.arg[0] |= ISO14A_CONNECT | ISO14A_CLEAR_TRACE;
+               if(active)
+                       c.arg[0] |= ISO14A_NO_SELECT;
+       }

 
        if(bTimeout){
 
        if(bTimeout){

-           #define MAX_TIMEOUT 40542464        // = (2^32-1) * (8*16) / 13560000Hz * 1000ms/s
-        c.arg[0] |= ISO14A_SET_TIMEOUT;
-        if(timeout > MAX_TIMEOUT) {
-            timeout = MAX_TIMEOUT;
-            PrintAndLog("Set timeout to 40542 seconds (11.26 hours). The max we can wait for response");
-        }
+               #define MAX_TIMEOUT 40542464    // = (2^32-1) * (8*16) / 13560000Hz * 1000ms/s
+               c.arg[0] |= ISO14A_SET_TIMEOUT;
+               if(timeout > MAX_TIMEOUT) {
+                       timeout = MAX_TIMEOUT;
+                       PrintAndLog("Set timeout to 40542 seconds (11.26 hours). The max we can wait for response");
+               }

                c.arg[2] = 13560000 / 1000 / (8*16) * timeout; // timeout in ETUs (time to transfer 1 bit, approx. 9.4 us)
        }
 
                c.arg[2] = 13560000 / 1000 / (8*16) * timeout; // timeout in ETUs (time to transfer 1 bit, approx. 9.4 us)
        }
 

-    if(power)
-        c.arg[0] |= ISO14A_NO_DISCONNECT;
+       if(power) {
+               c.arg[0] |= ISO14A_NO_DISCONNECT;
+       }

 
 

-       if(datalen > 0)
-        c.arg[0] |= ISO14A_RAW;
+       if(datalen > 0) {
+               c.arg[0] |= ISO14A_RAW;
+       }

 
 

-       if(topazmode)
+       if(topazmode) {

                c.arg[0] |= ISO14A_TOPAZMODE;
                c.arg[0] |= ISO14A_TOPAZMODE;

-               
-       // Max buffer is USB_CMD_DATA_SIZE
-    c.arg[1] = (datalen & 0xFFFF) | (numbits << 16);
-    memcpy(c.d.asBytes,data,datalen);
-
-    SendCommand(&c);
-
-    if (reply) {
-        if(active_select)
-            waitCmd(1);
-        if(datalen>0)
-            waitCmd(0);
-    } // if reply
-    return 0;
+       }
+
+       if(no_rats) {
+               c.arg[0] |= ISO14A_NO_RATS;
+       }
+
+       // Max buffer is USB_CMD_DATA_SIZE (512)
+       c.arg[1] = (datalen & 0xFFFF) | ((uint32_t)numbits << 16);
+       memcpy(c.d.asBytes,data,datalen);
+
+       SendCommand(&c);
+
+       if (reply) {
+               int res = 0;
+               if (active_select)
+                       res = waitCmd(1);
+               if (!res && datalen > 0)
+                       waitCmd(0);
+       } // if reply
+       return 0;

 }
 
 
 }
 
 

-static void waitCmd(uint8_t iSelect)
-{
+static int waitCmd(uint8_t iSelect) {

     uint8_t *recv;
     UsbCommand resp;
     char *hexout;
 
     if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
         recv = resp.d.asBytes;
     uint8_t *recv;
     UsbCommand resp;
     char *hexout;
 
     if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
         recv = resp.d.asBytes;

-        uint8_t iLen = iSelect ? resp.arg[1] : resp.arg[0];
-        PrintAndLog("received %i octets", iLen);
+        uint8_t iLen = resp.arg[0];
+               if (iSelect){
+                       iLen = resp.arg[1];
+                       if (iLen){
+                               PrintAndLog("Card selected. UID[%i]:", iLen);
+                       } else {
+                               PrintAndLog("Can't select card.");
+                       }
+               } else {
+                       PrintAndLog("received %i bytes:", iLen);
+               }

         if(!iLen)
         if(!iLen)

-            return;
+            return 1;

         hexout = (char *)malloc(iLen * 3 + 1);
         if (hexout != NULL) {
             for (int i = 0; i < iLen; i++) { // data in hex
         hexout = (char *)malloc(iLen * 3 + 1);
         if (hexout != NULL) {
             for (int i = 0; i < iLen; i++) { // data in hex


@@ -742,31 +929,33 @@ static void waitCmd(uint8_t iSelect)
             free(hexout);
         } else {
             PrintAndLog("malloc failed your client has low memory?");
             free(hexout);
         } else {
             PrintAndLog("malloc failed your client has low memory?");

+                       return 2;

         }
     } else {
         PrintAndLog("timeout while waiting for reply.");
         }
     } else {
         PrintAndLog("timeout while waiting for reply.");

+               return 3;

     }
     }

+       return 0;

 }
 
 static command_t CommandTable[] = 
 {
   {"help",   CmdHelp,              1, "This help"},
   {"list",   CmdHF14AList,         0, "[Deprecated] List ISO 14443a history"},
 }
 
 static command_t CommandTable[] = 
 {
   {"help",   CmdHelp,              1, "This help"},
   {"list",   CmdHF14AList,         0, "[Deprecated] List ISO 14443a history"},

-  {"reader", CmdHF14AReader,       0, "Act like an ISO14443 Type A reader"},
+  {"reader", CmdHF14AReader,       0, "Start acting like an ISO14443 Type A reader"},
+  {"info",   CmdHF14AInfo,         0, "Reads card and shows information about it"},

   {"cuids",  CmdHF14ACUIDs,        0, "<n> Collect n>0 ISO14443 Type A UIDs in one go"},
   {"sim",    CmdHF14ASim,          0, "<UID> -- Simulate ISO 14443a tag"},
   {"snoop",  CmdHF14ASnoop,        0, "Eavesdrop ISO 14443 Type A"},
   {"cuids",  CmdHF14ACUIDs,        0, "<n> Collect n>0 ISO14443 Type A UIDs in one go"},
   {"sim",    CmdHF14ASim,          0, "<UID> -- Simulate ISO 14443a tag"},
   {"snoop",  CmdHF14ASnoop,        0, "Eavesdrop ISO 14443 Type A"},

+  {"apdu",   CmdHF14AAPDU,         0, "Send an ISO 7816-4 APDU via ISO 14443-4 block transmission protocol"},

   {"raw",    CmdHF14ACmdRaw,       0, "Send raw hex data to tag"},
   {NULL, NULL, 0, NULL}
 };
 
 int CmdHF14A(const char *Cmd) {
   {"raw",    CmdHF14ACmdRaw,       0, "Send raw hex data to tag"},
   {NULL, NULL, 0, NULL}
 };
 
 int CmdHF14A(const char *Cmd) {

-       // flush
-       WaitForResponseTimeout(CMD_ACK,NULL,100);
-
-       // parse
-  CmdsParse(CommandTable, Cmd);
-  return 0;
+       (void)WaitForResponseTimeout(CMD_ACK,NULL,100);
+       CmdsParse(CommandTable, Cmd);
+       return 0;

 }
 
 int CmdHelp(const char *Cmd)
 }
 
 int CmdHelp(const char *Cmd)