added Tizen Smart Card Emulator

as companion for Android Smart Card Emulator to allow using the
Accessories' HCE mode instead of the phone's hardware.

TCardEmulator/src/tcardemulator.c

@@ -0,0 +1,166 @@
+#include "tcardemulator.h"
+#include <service_app.h>
+#include <nfc.h>
+#include <dlog.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+unsigned char *rapdu = NULL;
+size_t rapdu_length = 0;
+gboolean rapdu_received = FALSE;
+
+	static void
+hce_event_cb(nfc_se_h handle, nfc_hce_event_type_e event,
+		unsigned char *apdu, unsigned int apdu_len, void *user_data)
+{
+	switch (event) {
+		case NFC_HCE_EVENT_DEACTIVATED:
+			// Do something when NFC_HCE_EVENT_DEACTIVATED event arrives
+			// When the event arrives, apdu and apdu len is NULL and 0
+			terminate_service_connection();
+			break;
+
+		case NFC_HCE_EVENT_ACTIVATED:
+			// Do something when NFC_HCE_EVENT_ACTIVATED event arrives
+			// When the event arrives, apdu and apdu len is NULL and 0
+			find_peers();
+			break;
+
+		case NFC_HCE_EVENT_APDU_RECEIVED:
+			rapdu_received = FALSE;
+			send_data(apdu, apdu_len);
+			size_t count = 0;
+			while (!rapdu_received && count < 10) {
+				dlog_print(DLOG_INFO, LOG_TAG, "waiting for response");
+				usleep(100);
+				count++;
+			}
+			nfc_hce_send_apdu_response(handle, rapdu, rapdu_length);
+			rapdu_received = FALSE;
+			break;
+
+		default:
+			// Error handling
+			break;
+	}
+}
+
+	bool
+service_app_create(void *data)
+{
+	int ret = NFC_ERROR_NONE;
+	bool r = false;
+	nfc_se_card_emulation_mode_type_e ce_type;
+
+	ret = nfc_manager_initialize();
+	if (ret != NFC_ERROR_NONE) {
+		dlog_print(DLOG_ERROR, LOG_TAG, "nfc_manager_initialize failed : %d", ret);
+		goto err;
+	}
+
+	ret = nfc_se_get_card_emulation_mode(&ce_type);
+	if (ret != NFC_ERROR_NONE) {
+		dlog_print(DLOG_ERROR, LOG_TAG, "nfc_se_get_card_emulation_mode failed : %d", ret);
+		goto err;
+	}
+
+	if (ce_type == NFC_SE_CARD_EMULATION_MODE_OFF) {
+		nfc_se_enable_card_emulation();
+		if (ret != NFC_ERROR_NONE) {
+			dlog_print(DLOG_ERROR, LOG_TAG, "nfc_se_enable_card_emulation failed : %d", ret);
+			goto err;
+		}
+	}
+
+	ret = nfc_manager_set_hce_event_cb(hce_event_cb, NULL);
+	if (ret != NFC_ERROR_NONE) {
+		dlog_print(DLOG_ERROR, LOG_TAG, "nfc_manager_set_hce_event_cb failed : %d", ret);
+		goto err;
+	}
+
+	initialize_sap();
+
+	r = true;
+
+err:
+	return r;
+}
+
+	void
+service_app_terminate(void *data)
+{
+	int ret = NFC_ERROR_NONE;
+
+	nfc_manager_unset_hce_event_cb();
+
+	ret = nfc_manager_deinitialize();
+	if (ret != NFC_ERROR_NONE)
+	{
+		dlog_print(DLOG_ERROR, LOG_TAG, "nfc_manager_deinitialize failed : %d", ret);
+	}
+
+	terminate_service_connection();
+
+	free(rapdu);
+	rapdu = NULL;
+	rapdu_length = 0;
+	rapdu_received = FALSE;
+
+	return;
+}
+
+	void
+service_app_control(app_control_h app_control, void *data)
+{
+	// Todo: add your code here
+
+	return;
+}
+
+	void
+service_app_low_memory_callback(void *data)
+{
+	// Todo: add your code here
+	service_app_exit();
+
+	return;
+}
+
+	void
+service_app_low_battery_callback(void *data)
+{
+	// Todo: add your code here
+	service_app_exit();
+
+	return;
+}
+
+	int
+main(int argc, char* argv[])
+{
+	char ad[50] = {0,};
+
+	service_app_event_callback_s event_callback;
+
+	event_callback.create = service_app_create;
+	event_callback.terminate = service_app_terminate;
+	event_callback.app_control = service_app_control;
+	event_callback.low_memory = service_app_low_memory_callback;
+	event_callback.low_battery = service_app_low_battery_callback;
+
+#if 1
+	initialize_sap();
+	find_peers();
+	rapdu_received = FALSE;
+	unsigned char apdu[] = {0x00, 0xa4, 0x00, 0x00};
+	send_data(apdu, sizeof apdu);
+	size_t count = 0;
+	while (!rapdu_received && count < 10) {
+		dlog_print(DLOG_INFO, LOG_TAG, "waiting for response");
+		usleep(100);
+		count++;
+	}
+#endif
+
+	return svc_app_main(argc, argv, &event_callback, ad);
+}