fm11rf005sh-read.c

// FM11RF005SH dump tool for libnfc
// Made by Marcos Del Sol Vives <marcos@orca.pet>
// License: WTFPL 2.0

#include <stdio.h>
#include <stdint.h>
#include <nfc/nfc.h>

int main(int argc, char ** argv) {
	int ret = 1;
	int rxSize;

	if (argc != 1) {
		fprintf(stderr, "This command expects no parameters\n");
		return 1;
	}

	// Initialize context
	nfc_context * ctx;
	nfc_init(&ctx);
	if (ctx == NULL) {
		fprintf(stderr, "Error initializing libnfc\n");
		return 1;
	}

	// Open default reader
	nfc_device * dev = nfc_open(ctx, NULL);
	if (dev == NULL) {
		fprintf(stderr, "Error opening NFC reader\n");
		goto fail_exit;
	}

	// Initialise NFC device as "initiator"
	if (nfc_initiator_init(dev) < 0) {
		nfc_perror(dev, "nfc_initiator_init");
		goto fail_close;
	}

	// Configure the CRC
	if (nfc_device_set_property_bool(dev, NP_HANDLE_CRC, false) < 0) {
		nfc_perror(dev, "nfc_device_set_property_bool");
		goto fail_close;
	}

	// Use raw send/receive methods
	if (nfc_device_set_property_bool(dev, NP_EASY_FRAMING, false) < 0) {
		nfc_perror(dev, "nfc_device_set_property_bool");
		goto fail_close;
	}

	// Disable 14443-4 autoswitching
	if (nfc_device_set_property_bool(dev, NP_AUTO_ISO14443_4, false) < 0) {
		nfc_perror(dev, "nfc_device_set_property_bool");
		goto fail_close;
	}

	fprintf(stderr, "NFC reader %s opened\n", nfc_device_get_name(dev));

	// Send the REQA and expect ATQA
	uint8_t reqa[1] = { 0x26 };
	uint8_t atqa[2];
	rxSize = nfc_initiator_transceive_bits(dev, reqa, 7, NULL, atqa, sizeof(atqa), NULL);
	if (rxSize < 0) {
		nfc_perror(dev, "nfc_initiator_transceive_bits");
		goto fail_close;
	}

	if (rxSize != 16) {
		fprintf(stderr, "Expected 16-bit ATQA, read %d bits\n", rxSize);
		goto fail_close;
	}

	fprintf(stderr, "ATQA: %02x %02x\n", atqa[0], atqa[1]);
	
	if (atqa[0] != 0x05 || atqa[1] != 0x00) {
		fprintf(stderr, "Unexpected ATQA, aborting\n");
		goto fail_close;
	}

	// Re-enable CRC
	if (nfc_device_set_property_bool(dev, NP_HANDLE_CRC, true) < 0) {
		nfc_perror(dev, "nfc_device_set_property_bool");
		goto fail_close;
	}

	for (int sectorNum = 0; sectorNum < 8; sectorNum++) {
		uint8_t readReq[2] = { 0x30, sectorNum };
		uint8_t readValues[4];
		rxSize = nfc_initiator_transceive_bytes(dev, readReq, sizeof(readReq), readValues, sizeof(readValues), 0);
		if (rxSize < 0) {
			nfc_perror(dev, "nfc_initiator_transceive_bytes");
			goto fail_close;
		}
		printf("Sector %d: ", sectorNum);
		if (rxSize != 4) {
			printf("read error\n");
		} else {
			printf("%02x %02x %02x %02x\n", readValues[0], readValues[1], readValues[2], readValues[3]);
		}
	}

fail_close:
	nfc_close(dev);

fail_exit:
	nfc_exit(ctx);

	return ret;
}