fix: array index out of range in mfkeys.log (thanks to @TomHarkness)

[proxmark3-svn] / client / cmdhf14a.c

diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index 4b3975b313e4ca53ba21a47e18bbf4f18cfdbad5..03ab0b5a69f8b3e83e725af73b99ed3b464f84fa 100644 (file)
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -16,11 +16,11 @@
 #include <inttypes.h>
 #include <string.h>
 #include <unistd.h>
+#include <ctype.h>
 #include "util.h"
 #include "util_posix.h"
 #include "iso14443crc.h"
-#include "data.h"
-#include "proxmark3.h"
+#include "comms.h"
 #include "ui.h"
 #include "cmdparser.h"
 #include "common.h"
@@ -34,8 +34,13 @@
 static int CmdHelp(const char *Cmd);
 static int waitCmd(uint8_t iLen);
 
+// structure and database for uid -> tagtype lookups 
+typedef struct { 
+       uint8_t uid;
+       char* desc;
+} manufactureName; 
 
-const manufactureName manufactureMapping[] = {
+static const manufactureName manufactureMapping[] = {
        // ID,  "Vendor Country"
        { 0x01, "Motorola UK" },
        { 0x02, "ST Microelectronics SA France" },
@@ -153,7 +158,7 @@ int CmdHF14AReader(const char *Cmd) {
                        break;
                case 'x':
                case 'X':
-                       cm = cm - ISO14A_CONNECT;
+                       cm &= ~ISO14A_CONNECT;
                        break;
                default:
                        PrintAndLog("Unknown command.");
@@ -191,7 +196,7 @@ 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(" SAK : %02x [%d]", card.sak, resp.arg[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));
                }
@@ -243,7 +248,7 @@ int CmdHF14AInfo(const char *Cmd)
 
        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) {
@@ -481,12 +486,12 @@ int CmdHF14AInfo(const char *Cmd)
 
        
        // try to see if card responses to "chinese magic backdoor" commands.
-       mfCIdentify();
+       (void)mfCIdentify();
        
        if (isMifareClassic) {          
                switch(DetectClassicPrng()) {
                case 0:
-                       PrintAndLog("Prng detection: HARDEND (hardnested)");            
+                       PrintAndLog("Prng detection: HARDENED (hardnested)");           
                        break;
                case 1:
                        PrintAndLog("Prng detection: WEAK");
@@ -648,7 +653,7 @@ void DropField() {
        SendCommand(&c);
 }
 
-int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int *dataoutlen) {
+int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {
        uint16_t cmdc = 0;
        
        if (activateField) {
@@ -660,8 +665,8 @@ int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool lea
        // "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 timeout14a * 1.06 / 100, true, size, &keyBlock[6 * c], e_sector); // timeout is (ms * 106)/10 or us*0.0106
-       UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_APDU | ISO14A_SET_TIMEOUT | cmdc, (datainlen & 0xFFFF), 1000 * 1000 * 1.06 / 100}}; 
+       // 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);
        
@@ -686,6 +691,12 @@ int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool lea
                *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) {
@@ -719,6 +730,7 @@ int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool lea
        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;
@@ -728,6 +740,7 @@ int CmdHF14AAPDU(const char *cmd) {
        
        if (strlen(cmd) < 2) {
                PrintAndLog("Usage: hf 14a apdu [-s] [-k] [-t] <APDU (hex)>");
+               PrintAndLog("Command sends an ISO 7816-4 APDU via ISO 14443-4 block transmission protocol (T=CL)");
                PrintAndLog("       -s    activate field and select card");
                PrintAndLog("       -k    leave the signal field ON after receive response");
                PrintAndLog("       -t    executes TLV decoder if it possible. TODO!!!!");
@@ -756,7 +769,7 @@ int CmdHF14AAPDU(const char *cmd) {
                                        return 1;
                        }
                        
-               if (isxdigit(c)) {
+               if (isxdigit((unsigned char)c)) {
                        // len = data + PCB(1b) + CRC(2b)
                        switch(param_gethex_to_eol(cmd, cmdp, data, sizeof(data) - 1 - 2, &datalen)) {
                        case 1:
@@ -779,7 +792,7 @@ int CmdHF14AAPDU(const char *cmd) {
 
        PrintAndLog(">>>>[%s%s%s] %s", activateField ? "sel ": "", leaveSignalON ? "keep ": "", decodeTLV ? "TLV": "", sprint_hex(data, datalen));
        
-       int res = ExchangeAPDU14a(data, datalen, activateField, leaveSignalON, data, &datalen);
+       int res = ExchangeAPDU14a(data, datalen, activateField, leaveSignalON, data, USB_CMD_DATA_SIZE, &datalen);
 
        if (res)
                return res;
@@ -1013,18 +1026,15 @@ static command_t CommandTable[] =
   {"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 ISO 14443-4 APDU to tag"},
+  {"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) {
-       // 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)