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@@ -0,0 +1,123 @@
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+#include "nfc_device.h"
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+
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+#include <file-worker.h>
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+
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+#define NFC_DEVICE_MAX_DATA_LEN 14
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+
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+static const char* nfc_app_folder = "nfc";
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+static const char* nfc_app_extension = ".nfc";
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+
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+void nfc_device_set_name(NfcDevice* dev, const char* name) {
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+ furi_assert(dev);
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+
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+ strlcpy(dev->dev_name, name, NFC_DEV_NAME_MAX_LEN);
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+}
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+
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+bool nfc_device_save(NfcDevice* dev, const char* dev_name) {
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+ furi_assert(dev);
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+
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+ FileWorker* file_worker = file_worker_alloc(false);
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+ string_t dev_file_name;
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+
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+ // Create nfc directory if necessary
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+ if(!file_worker_mkdir(file_worker, nfc_app_folder)) {
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+ return false;
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+ };
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+
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+ // First remove nfc device file if it was saved
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+ string_init_printf(dev_file_name, "%s/%s%s", nfc_app_folder, dev->dev_name, nfc_app_extension);
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+ if(!file_worker_remove(file_worker, string_get_cstr(dev_file_name))) {
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+ string_clear(dev_file_name);
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+ return false;
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+ };
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+
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+ // Prepare buffer to write
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+ uint8_t buff[NFC_DEVICE_MAX_DATA_LEN];
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+ buff[0] = dev->data.uid_len;
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+ memcpy(&buff[1], dev->data.uid, dev->data.uid_len);
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+ memcpy(&buff[dev->data.uid_len + 1], dev->data.atqa, 2);
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+ buff[dev->data.uid_len + 3] = dev->data.sak;
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+
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+ // Save nfc device
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+ bool res = file_worker_open(
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+ file_worker, string_get_cstr(dev_file_name), FSAM_WRITE, FSOM_CREATE_ALWAYS);
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+ string_clear(dev_file_name);
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+ if(res) {
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+ // Write UID length
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+ if(!file_worker_write_hex(file_worker, buff, dev->data.uid_len + 4)) {
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+ file_worker_close(file_worker);
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+ return false;
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+ }
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+ }
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+ file_worker_close(file_worker);
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+ file_worker_free(file_worker);
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+
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+ return true;
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+}
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+
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+static bool nfc_device_load_data(FileWorker* file_worker, string_t path, NfcDevice* dev) {
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+ // Open key file
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+ if(!file_worker_open(file_worker, string_get_cstr(path), FSAM_READ, FSOM_OPEN_EXISTING)) {
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+ return false;
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+ }
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+
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+ uint8_t buff[NFC_DEVICE_MAX_DATA_LEN] = {};
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+
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+ // Load first byte - UID length
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+ if(!file_worker_read_hex(file_worker, buff, 1)) {
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+ return false;
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+ }
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+ // Read space
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+ uint8_t space = 0;
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+ if(!file_worker_read(file_worker, &space, 1)) {
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+ return false;
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+ }
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+
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+ // // Load other data
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+ if(!file_worker_read_hex(file_worker, &buff[1], buff[0] + 3)) {
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+ return false;
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+ }
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+
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+ // Set loaded data
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+ dev->data.uid_len = buff[0];
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+ memcpy(dev->data.uid, &buff[1], dev->data.uid_len);
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+ memcpy(dev->data.atqa, &buff[dev->data.uid_len + 1], 2);
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+ dev->data.sak = buff[dev->data.uid_len + 3];
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+ return true;
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+}
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+
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+bool nfc_device_load(NfcDevice* dev, const char* dev_name) {
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+ furi_assert(dev);
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+
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+ return true;
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+}
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+
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+bool nfc_file_select(NfcDevice* dev) {
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+ furi_assert(dev);
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+
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+ FileWorker* file_worker = file_worker_alloc(false);
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+ // Input events and views are managed by file_select
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+ bool res = file_worker_file_select(
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+ file_worker,
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+ nfc_app_folder,
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+ nfc_app_extension,
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+ dev->file_name,
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+ sizeof(dev->file_name),
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+ NULL);
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+ if(res) {
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+ string_t dev_str;
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+
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+ // Get key file path
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+ string_init_printf(dev_str, "%s/%s%s", nfc_app_folder, dev->file_name, nfc_app_extension);
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+
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+ res = nfc_device_load_data(file_worker, dev_str, dev);
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+ if(res) {
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+ nfc_device_set_name(dev, dev->file_name);
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+ }
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+ string_clear(dev_str);
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+ }
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+ file_worker_close(file_worker);
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+ file_worker_free(file_worker);
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+
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+ return res;
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+}
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