binding: nfc: new initial binding

Slight rewrite to use libnfc initially for getting tag uid's for
user settings.

Bug-AGL: SPEC-1554
Change-Id: I7b8c30102b82e86a92c89909bcbfba9ab7164c1f
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

1 files changed, 0 insertions, 478 deletions

diff --git a/src/libnfc_reader.c b/src/libnfc_reader.c
deleted file mode 100644
index 78269db..0000000
--- a/src/libnfc_reader.c
+++ /dev/null
@@ -1,478 +0,0 @@
-#include "nfc-binding.h"
-
-#include <signal.h>
-#include <string.h>
-#include <sys/types.h>
-#include <pthread.h>
-
-// FIXME: It compile without these lines, but KDevelop complains about pthread_t being undeclared.
-#ifndef _BITS_PTHREADTYPES
-typedef unsigned long int pthread_t;
-#endif
-
-#include <nfc/nfc.h>
-#include "libnfc_reader.h"
-#include "stringutils.h"
-
-extern struct afb_event on_nfc_target_add_event;
-extern struct afb_event on_nfc_target_remove_event;
-
-#define MAX_NFC_DEVICE_COUNT	8
-#define MAX_NFC_MODULATIONS		8
-#define MAX_NFC_BAUDRATES 		8
-#define POLL_NUMBER				0x1
-#define POLL_PERIOD				0x7
-
-typedef struct libnfc_device_tag
-{
-	pthread_t			poller;
-	nfc_device*			device;
-	nfc_connstring		name;
-	
-	nfc_modulation*		modulations;
-	size_t				modulations_count;
-} libnfc_device;
-
-typedef struct libnfc_context_tag
-{
-	nfc_context*		context;
-	libnfc_device*		devices;
-	size_t				devices_count;
-	struct json_object* last_target;
-} libnfc_context;
-
-static libnfc_context libnfc;
-
-void libnfc_polling_error(int code)
-{
-	switch(code)
-	{
-	case NFC_EIO:
-		AFB_ERROR("libnfc: polling failed with NFC_EIO (%d) code: Input / output error, device may not be usable anymore without re-open it!", code);
-		break;
-	case NFC_EINVARG:
-		AFB_ERROR("libnfc: polling failed with NFC_EINVARG (%d) code: Invalid argument(s)!", code);
-		break;
-	case NFC_EDEVNOTSUPP:
-		AFB_ERROR("libnfc: polling failed with NFC_EDEVNOTSUPP (%d) code: Operation not supported by device!", code);
-		break;
-	case NFC_ENOTSUCHDEV:
-		AFB_ERROR("libnfc: polling failed with NFC_ENOTSUCHDEV (%d) code: No such device!", code);
-		break;
-	case NFC_EOVFLOW:
-		AFB_ERROR("libnfc: polling failed with NFC_EOVFLOW (%d) code: Buffer overflow!", code);
-		break;
-	case NFC_ETIMEOUT:
-		AFB_ERROR("libnfc: polling failed with NFC_ETIMEOUT (%d) code: Operation timed out!", code);
-		break;
-	case NFC_EOPABORTED:
-		AFB_ERROR("libnfc: polling failed with NFC_EOPABORTED (%d) code: Operation aborted (by user)!", code);
-		break;
-	case NFC_ENOTIMPL:
-		AFB_ERROR("libnfc: polling failed with NFC_ENOTIMPL (%d) code: Not (yet) implemented!", code);
-		break;
-	case NFC_ETGRELEASED:
-		AFB_ERROR("libnfc: polling failed with NFC_ETGRELEASED (%d) code: Target released!", code);
-		break;
-	case NFC_ERFTRANS:
-		AFB_ERROR("libnfc: polling failed with NFC_ERFTRANS (%d) code: Error while RF transmission!", code);
-		break;
-	case NFC_EMFCAUTHFAIL:
-		AFB_ERROR("libnfc: polling failed with NFC_EMFCAUTHFAIL (%d) code: MIFARE Classic: authentication failed!", code);
-		break;
-	case NFC_ESOFT:
-		AFB_ERROR("libnfc: polling failed with NFC_ESOFT (%d) code: Software error (allocation, file/pipe creation, etc.)!", code);
-		break;
-	case NFC_ECHIP:
-		//AFB_ERROR("libnfc: polling failed with NFC_ECHIP (%d) code: Device's internal chip error!", code);
-		break;
-	default:
-		AFB_ERROR("libnfc: polling failed with unknown code: %d!", code);
-		break;
-	}
-}
-
-void add_nfc_field(struct json_object* parent, const char* field, const void* src, size_t sz)
-{
-	char* data;
-	
-	if (parent && field && src && sz)
-	{
-		data = to_hex_string(src, sz);
-		if (data)
-		{
-			json_object_object_add(parent, field, json_object_new_string(data));
-			free(data);
-		}
-	}
-}
-
-struct json_object* read_target(const nfc_target* target)
-{
-	struct json_object*	result;
-	const char*			mt;
-	
-	if (!target)
-	{
-		AFB_WARNING("libnfc: No target to read!");
-		return NULL;
-	}
-	
-	result = json_object_new_object();
-	mt = str_nfc_modulation_type(target->nm.nmt);
-	json_object_object_add(result, "Type", json_object_new_string(mt));
-	
-	switch(target->nm.nmt)
-	{
-		case NMT_ISO14443A:
-			add_nfc_field(result, "ATQA", target->nti.nai.abtAtqa, 2);
-			add_nfc_field(result, "SAK", &target->nti.nai.btSak, 1);
-			add_nfc_field(result, "UID", target->nti.nai.abtUid, target->nti.nai.szUidLen);
-			add_nfc_field(result, "ATS", target->nti.nai.abtAts, target->nti.nai.szAtsLen);
-			
-			break;
-		case NMT_ISO14443B:
-			add_nfc_field(result, "PUPI", target->nti.nbi.abtPupi, 4);
-			add_nfc_field(result, "Application Data", target->nti.nbi.abtApplicationData, 4);
-			add_nfc_field(result, "Protocol Info", target->nti.nbi.abtProtocolInfo, 3);
-			add_nfc_field(result, "Card Id", &target->nti.nbi.ui8CardIdentifier, 1);
-			
-			break;
-		default:
-			AFB_WARNING("libnfc: unsupported modulation type: %s.", mt);
-			json_object_object_add(result, "error", json_object_new_string("unsupported tag type"));
-			break;
-	}
-	return result;
-}
-
-void* libnfc_reader_main(void* arg)
-{
-	libnfc_device* device;
-	nfc_target nt;
-	int polled_target_count;
-	nfc_modulation mods[MAX_NFC_MODULATIONS];
-	struct json_object* result;
-	size_t i, j;
-	
-	device = (libnfc_device*)arg;
-	
-	memset(mods, 0, sizeof(nfc_modulation) * MAX_NFC_MODULATIONS);
-	for(i = 0, j = 0; i < device->modulations_count; ++i, ++j)
-	{
-		switch(device->modulations[i].nmt)
-		{
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_ISO14443A)
-			case NMT_ISO14443A:
-#endif
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_ISOJEWEL)
-			case NMT_JEWEL:
-#endif
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_ISO14443B)
-			case NMT_ISO14443B:
-#endif
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_ISO14443BI)
-			case NMT_ISO14443BI:
-#endif
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_ISO14443B2SR)
-			case NMT_ISO14443B2SR:
-#endif
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_ISO14443B2CT)
-			case NMT_ISO14443B2CT:
-#endif
-#if defined(LIBNFC_POLL_ALL) || defined(LIBNFC_POLL_NMT_FELICA)
-			case NMT_FELICA:
-#endif
-				mods[j] = device->modulations[i];
-				AFB_NOTICE("libnfc: polling for %s at %s is ENABLED.", str_nfc_modulation_type(device->modulations[i].nmt), str_nfc_baud_rate(device->modulations[i].nbr));
-				break;
-			default:
-				--j;
-				// NMT_DEP is always disabled because it can't be polled
-				AFB_NOTICE("libnfc: polling for %s at %s is DISABLED.", str_nfc_modulation_type(device->modulations[i].nmt), str_nfc_baud_rate(device->modulations[i].nbr));
-				break;
-		}
-	}
-	
-	while(device->device)
-	{
-		polled_target_count = nfc_initiator_poll_target
-		(
-			device->device,
-			mods,
-			j,
-			POLL_NUMBER,
-			POLL_PERIOD,
-			&nt
-		);
-		
-		switch(polled_target_count)
-		{
-		case 0:
-			// No target detected
-			AFB_INFO("libnfc: polling done with no result.");
-			if (libnfc.last_target)
-			{
-				AFB_NOTICE("libnfc: tag removed = %s", json_object_to_json_string(libnfc.last_target));
-				afb_event_push(on_nfc_target_remove_event, libnfc.last_target);
-				libnfc.last_target = NULL;
-			}
-			break;
-			
-		case 1:
-			AFB_INFO("libnfc: polling done with one result.");
-			// One target detected
-			result = read_target(&nt);
-			
-			if (libnfc.last_target)
-			{
-				if (strcmp(json_object_to_json_string(result), json_object_to_json_string(libnfc.last_target)))
-				{
-					AFB_NOTICE("libnfc: tag removed = %s", json_object_to_json_string(libnfc.last_target));
-					afb_event_push(on_nfc_target_remove_event, libnfc.last_target);
-					libnfc.last_target = NULL;
-				}
-			}
-			
-			if (!libnfc.last_target)
-			{
-				json_object_get(result);
-				libnfc.last_target = result;
-				
-				AFB_NOTICE("libnfc: tag added = %s", json_object_to_json_string(result));
-				afb_event_push(on_nfc_target_add_event, result);
-			}
-			break;
-			
-		default:
-			if (polled_target_count < 0) libnfc_polling_error(polled_target_count);
-			else AFB_WARNING("libnfc: polling done with unsupported result count: %d.", polled_target_count);
-			
-			// Consider target is removed
-			if (libnfc.last_target)
-			{
-				AFB_NOTICE("libnfc: tag removed = %s", json_object_to_json_string(libnfc.last_target));
-				afb_event_push(on_nfc_target_remove_event, libnfc.last_target);
-				libnfc.last_target = NULL;
-			}
-			break;
-		}
-	}
-	return NULL;
-}
-
-void exit_handler()
-{
-	size_t i;
-	nfc_device* dev;
-	for(i = 0; i < libnfc.devices_count; ++i)
-	{
-		if (libnfc.devices[i].device)
-		{
-			dev = libnfc.devices[i].device;
-			libnfc.devices[i].device = NULL;
-			nfc_close(dev);
-		}
-	}
-	nfc_exit(libnfc.context);
-	libnfc.context = NULL;
-}
-
-void sigterm_handler(int sig)
-{
-	if (sig == SIGTERM && libnfc.context && libnfc.devices_count)
-	{
-		exit_handler();
-	}
-}
-
-/// @brief Start the libnfc context.
-/// @return An exit code, @c EXIT_LIBNFC_SUCCESS (zero) on success.
-int libnfc_init()
-{
-	nfc_device* dev;
-	const nfc_modulation_type* modulations;
-	const nfc_baud_rate* baudrates;
-	size_t modulation_idx;
-	nfc_connstring connstrings[MAX_NFC_DEVICE_COUNT];
-	size_t ref_device_count;
-	size_t device_idx;
-	
-	atexit(exit_handler);
-	
-	memset(&libnfc, 0, sizeof(libnfc_context));
-	
-	nfc_init(&libnfc.context);
-	if (libnfc.context == NULL)
-	{
-		AFB_ERROR("[libnfc] Initialization failed (malloc)!");
-		return EXIT_LIBNFC_NOT_INITIALIZED;
-	}
-	
-	AFB_NOTICE("[libnfc] Using libnfc version: %s.", nfc_version());
-	
-	// Find and register devices
-	ref_device_count = nfc_list_devices(libnfc.context, connstrings, MAX_NFC_DEVICE_COUNT);
-	if (!ref_device_count)
-	{
-		AFB_ERROR("libnfc: No NFC device found!");
-		return EXIT_LIBNFC_NO_DEVICE_FOUND;
-	}
-	libnfc.devices_count = ref_device_count;
-	libnfc.devices = malloc(sizeof(libnfc_device) * libnfc.devices_count);
-	memset(libnfc.devices, 0, sizeof(libnfc_device) * libnfc.devices_count);
-	
-	signal(SIGTERM, sigterm_handler);
-	
-	for(device_idx = 0; device_idx < ref_device_count; ++device_idx)
-	{
-		AFB_NOTICE("libnfc: NFC Device found: \"%s\".", connstrings[device_idx]);
-		strcpy(libnfc.devices[device_idx].name, connstrings[device_idx]);
-
-		// Find and register modulations
-		dev = nfc_open(libnfc.context, connstrings[device_idx]);
-		if (dev)
-		{
-			if (nfc_device_get_supported_modulation(dev, N_INITIATOR, &modulations))
-			{
-				AFB_ERROR("libnfc: Failed to get supported modulations from '%s'!", connstrings[device_idx]);
-			}
-			else
-			{
-				// Find and register modulations
-				modulation_idx = 0;
-				while(modulations[modulation_idx]) ++modulation_idx;
-				libnfc.devices[device_idx].modulations_count = modulation_idx;
-				if (modulation_idx)
-				{
-					libnfc.devices[device_idx].modulations = malloc(sizeof(nfc_modulation) * modulation_idx);
-					memset(libnfc.devices[device_idx].modulations, 0, sizeof(nfc_modulation) * modulation_idx);
-					
-					modulation_idx = 0;
-					while(modulations[modulation_idx])
-					{
-						libnfc.devices[device_idx].modulations[modulation_idx].nmt = modulations[modulation_idx];
-						if (!nfc_device_get_supported_baud_rate(dev, modulations[modulation_idx], &baudrates))
-						{
-							 // Keep only the first speed which is supposed to be the fastest
-							libnfc.devices[device_idx].modulations[modulation_idx].nbr = baudrates[0];
-						}
-						
-						AFB_NOTICE("libnfc:    - Modulation '%s' supported at '%s'."
-							, str_nfc_modulation_type(libnfc.devices[device_idx].modulations[modulation_idx].nmt)
-							, str_nfc_baud_rate(libnfc.devices[device_idx].modulations[modulation_idx].nbr));
-						++modulation_idx;
-					}
-				}
-			}
-			nfc_close(dev);
-		}
-	}
-	
-	return EXIT_LIBNFC_SUCCESS;
-}
-
-/// @brief List devices founds by libnfc.
-/// @param[in] result A json object array into which found devices are added.
-/// @return An exit code, @c EXIT_LIBNFC_SUCCESS (zero) on success.
-int libnfc_list_devices(struct json_object* result)
-{
-	struct json_object* device;
-	size_t i;
-	
-	for(i = 0; i < libnfc.devices_count; ++i)
-	{
-		device = json_object_new_object();
-		json_object_object_add(device, "source", json_object_new_string("libnfc"));
-		json_object_object_add(device, "name", json_object_new_string(libnfc.devices[i].name));
-		json_object_array_add(result, device);
-	}
-	
-	return EXIT_LIBNFC_SUCCESS;
-}
-
-int libnfc_list_devices_capabilities(struct json_object* result, struct json_object* devices)
-{
-	struct json_object* device;
-	struct json_object* mods;
-	struct json_object* mod;
-	size_t i, j;
-	
-	for(i = 0; i < libnfc.devices_count; ++i)
-	{
-		device = json_object_new_object();
-		json_object_object_add(device, "source", json_object_new_string("libnfc"));
-		json_object_object_add(device, "name", json_object_new_string(libnfc.devices[i].name));
-		mods = json_object_new_array();
-		
-		for(j = 0; j < libnfc.devices[i].modulations_count; ++j)
-		{
-			mod = json_object_new_object();
-			json_object_object_add(mod, "modulation", json_object_new_string(str_nfc_modulation_type(libnfc.devices[i].modulations[j].nmt)));
-			json_object_object_add(mod, "baudrate", json_object_new_string(str_nfc_baud_rate(libnfc.devices[i].modulations[j].nbr)));
-			json_object_array_add(mods, mod);
-		}
-		
-		json_object_object_add(device, "modulations", mods);
-		json_object_array_add(result, device);
-	}
-	
-	return EXIT_LIBNFC_SUCCESS;
-}
-
-int libnfc_start_polling(struct json_object* result, struct json_object* devices)
-{
-	struct json_object* device;
-	size_t i;
-	int r;
-	
-	for(i = 0; i < libnfc.devices_count; ++i)
-	{
-		device = json_object_new_object();
-		json_object_object_add(device, "source", json_object_new_string("libnfc"));
-		json_object_object_add(device, "name", json_object_new_string(libnfc.devices[i].name));
-		if (libnfc.devices[i].device)
-		{
-			json_object_object_add(device, "status", json_object_new_string("already polling"));
-			AFB_NOTICE("libnfc: Device '%s' is already polling.", libnfc.devices[i].name);
-		}
-		else
-		{
-			libnfc.devices[i].device = nfc_open(libnfc.context, libnfc.devices[i].name);
-			if (libnfc.devices[i].device)
-			{
-				if (nfc_initiator_init(libnfc.devices[i].device) < 0)
-				{
-					nfc_close(libnfc.devices[i].device);
-					libnfc.devices[i].device = NULL;
-					json_object_object_add(device, "status", json_object_new_string("failed to set initiator mode"));
-					AFB_ERROR("libnfc: nfc_initiator_init failedfor device '%s'!", libnfc.devices[i].name);
-				}
-				else
-				{
-					r = pthread_create(&libnfc.devices[i].poller, NULL, libnfc_reader_main, (void*)&libnfc.devices[i]);
-					if (r)
-					{
-						nfc_close(libnfc.devices[i].device);
-						libnfc.devices[i].device = NULL;
-						json_object_object_add(device, "status", json_object_new_string("failed to create the polling thread"));
-						AFB_ERROR("libnfc: pthread_create failed!");
-					}
-					else
-					{
-						json_object_object_add(device, "status", json_object_new_string("polling"));
-						AFB_NOTICE("libnfc: Polling the device '%s'.", libnfc.devices[i].name);
-					}
-				}
-			}
-			else
-			{
-				json_object_object_add(device, "status", json_object_new_string("failed to open device"));
-				AFB_ERROR("libnfc: Failed to open device '%s'!", libnfc.devices[i].name);
-			}
-		}
-		json_object_array_add(result, device);
-	}
-	
-	return EXIT_LIBNFC_SUCCESS;
-}