static bool
transmit_bits(const uint8_t *pbtTx, const size_t szTxBits)
{
// Show transmitted command
printf("Sent bits: ");
print_hex_bits(pbtTx, szTxBits);
// Transmit the bit frame command, we don't use the arbitrary parity feature
if ((szRxBits = nfc_initiator_transceive_bits(pnd, pbtTx, szTxBits, NULL, abtRx, sizeof(abtRx), NULL)) < 0)
return false;
// Show received answer
printf("Received bits: ");
print_hex_bits(abtRx, szRxBits);
// Succesful transfer
return true;
}
static bool
transmit_bits (const byte_t * pbtTx, const size_t szTxBits)
{
// Show transmitted command
if (!quiet_output) {
printf ("Sent bits: ");
print_hex_bits (pbtTx, szTxBits);
}
// Transmit the bit frame command, we don't use the arbitrary parity feature
if (!nfc_initiator_transceive_bits (pnd, pbtTx, szTxBits, NULL, abtRx, &szRxBits, NULL))
return false;
// Show received answer
if (!quiet_output) {
printf ("Received bits: ");
print_hex_bits (abtRx, szRxBits);
}
// Succesful transfer
return true;
}
bool transmit_bits(const uint8_t *pbtTx, const size_t szTxBits)
{
//! Show transmitted command
#ifdef DEBUG_PRINTF
fprintf(stderr,"Sent bits: ");
#endif
print_hex_bits(pbtTx, szTxBits);
//! Transmit the bit frame command, we don't use the arbitrary parity feature
if ((szRxBits = nfc_initiator_transceive_bits(pnd, pbtTx, szTxBits, NULL, abtRx, sizeof(abtRx), NULL)) < 0)
{
return false;
}
//! Show received answer
#ifdef DEBUG_PRINTF
fprintf(stderr,"Received bits: ");
#endif
print_hex_bits(abtRx, szRxBits);
//! Succesful transfer
return true;
}
int main(int argc, const char* argv[])
{
byte* pbtTx = null;
ui32 uiTxBits;
// Try to open the NFC reader
pdi = nfc_connect();
if (pdi == INVALID_DEVICE_INFO)
{
printf("Error connecting NFC second reader\n");
return 1;
}
printf("\n");
printf("[+] Connected to NFC reader: %s\n",pdi->acName);
printf("[+] Try to break out the auto-simulation, this requires a second reader!\n");
printf("[+] To do this, please send any command after the anti-collision\n");
printf("[+] For example, send a RATS command or use the \"anticol\" tool\n");
if (!nfc_target_init(pdi,abtRecv,&uiRecvBits))
{
printf("Error: Could not come out of auto-simulation, no command was received\n");
return 1;
}
printf("[+] Received initiator command: ");
print_hex_bits(abtRecv,uiRecvBits);
printf("[+] Configuring communication\n");
nfc_configure(pdi,DCO_HANDLE_CRC,false);
nfc_configure(pdi,DCO_HANDLE_PARITY,true);
printf("[+] Done, the simulated tag is initialized\n\n");
while(true)
{
// Test if we received a frame
if (nfc_target_receive_bits(pdi,abtRecv,&uiRecvBits,null))
{
// Prepare the command to send back for the anti-collision request
switch(uiRecvBits)
{
case 7: // Request or Wakeup
pbtTx = abtAtqa;
uiTxBits = 16;
// New anti-collsion session started
printf("\n");
break;
case 16: // Select All
pbtTx = abtUidBcc;
uiTxBits = 40;
break;
case 72: // Select Tag
pbtTx = abtSak;
uiTxBits = 24;
break;
default: // unknown length?
uiTxBits = 0;
break;
}
printf("R: ");
print_hex_bits(abtRecv,uiRecvBits);
// Test if we know how to respond
if(uiTxBits)
{
// Send and print the command to the screen
nfc_target_send_bits(pdi,pbtTx,uiTxBits,null);
printf("T: ");
print_hex_bits(pbtTx,uiTxBits);
}
}
}
nfc_disconnect(pdi);
}