[FL-1039] Emv emulation (#491)

* nfc: add emulate emv to submenu
* api-hal-nfc: add emv emulation

7 files changed, 98 insertions, 13 deletions

diff --git a/applications/nfc/nfc.c b/applications/nfc/nfc.c
index d82f32ee..c57e7a74 100755
--- a/applications/nfc/nfc.c
+++ b/applications/nfc/nfc.c
@@ -27,8 +27,10 @@ void nfc_menu_callback(void* context, uint32_t index) {
     } else if(index == 1) {
         message.type = NfcMessageTypeReadEMV;
     } else if(index == 2) {
-        message.type = NfcMessageTypeEmulate;
+        message.type = NfcMessageTypeEmulateEMV;
     } else if(index == 3) {
+        message.type = NfcMessageTypeEmulate;
+    } else if(index == 4) {
         message.type = NfcMessageTypeField;
     }
     furi_check(osMessageQueuePut(message_queue, &message, 0, osWaitForever) == osOK);
@@ -52,8 +54,9 @@ Nfc* nfc_alloc() {
     nfc->submenu = submenu_alloc();
     submenu_add_item(nfc->submenu, "Detect", 0, nfc_menu_callback, nfc);
     submenu_add_item(nfc->submenu, "Read EMV", 1, nfc_menu_callback, nfc);
-    submenu_add_item(nfc->submenu, "Emulate", 2, nfc_menu_callback, nfc);
-    submenu_add_item(nfc->submenu, "Field", 3, nfc_menu_callback, nfc);
+    submenu_add_item(nfc->submenu, "Emulate EMV", 2, nfc_menu_callback, nfc);
+    submenu_add_item(nfc->submenu, "Emulate", 3, nfc_menu_callback, nfc);
+    submenu_add_item(nfc->submenu, "Field", 4, nfc_menu_callback, nfc);
     View* submenu_view = submenu_get_view(nfc->submenu);
     view_set_previous_callback(submenu_view, nfc_view_exit);
     view_dispatcher_add_view(nfc->view_dispatcher, NfcViewMenu, submenu_view);
@@ -74,6 +77,13 @@ Nfc* nfc_alloc() {
     view_allocate_model(nfc->view_read_emv, ViewModelTypeLocking, sizeof(NfcViewReadModel));
     view_dispatcher_add_view(nfc->view_dispatcher, NfcViewReadEmv, nfc->view_read_emv);
 
+    // Emulate EMV
+    nfc->view_emulate_emv = view_alloc();
+    view_set_context(nfc->view_emulate_emv, nfc);
+    view_set_draw_callback(nfc->view_emulate_emv, nfc_view_emulate_emv_draw);
+    view_set_previous_callback(nfc->view_emulate_emv, nfc_view_stop);
+    view_dispatcher_add_view(nfc->view_dispatcher, NfcViewEmulateEMV, nfc->view_emulate_emv);
+
     // Emulate
     nfc->view_emulate = view_alloc();
     view_set_context(nfc->view_emulate, nfc);
@@ -118,6 +128,14 @@ void nfc_free(Nfc* nfc) {
     view_dispatcher_remove_view(nfc->view_dispatcher, NfcViewRead);
     view_free(nfc->view_detect);
 
+    // Read EMV
+    view_dispatcher_remove_view(nfc->view_dispatcher, NfcViewReadEmv);
+    view_free(nfc->view_read_emv);
+
+    // Emulate EMV
+    view_dispatcher_remove_view(nfc->view_dispatcher, NfcViewEmulateEMV);
+    view_free(nfc->view_emulate_emv);
+
     // Emulate
     view_dispatcher_remove_view(nfc->view_dispatcher, NfcViewEmulate);
     view_free(nfc->view_emulate);
@@ -214,6 +232,8 @@ int32_t nfc_task(void* p) {
                     return true;
                 });
             nfc_start(nfc, NfcViewReadEmv, NfcWorkerStateReadEMV);
+        } else if(message.type == NfcMessageTypeEmulateEMV) {
+            nfc_start(nfc, NfcViewEmulateEMV, NfcWorkerStateEmulateEMV);
         } else if(message.type == NfcMessageTypeEmulate) {
             nfc_start(nfc, NfcViewEmulate, NfcWorkerStateEmulate);
         } else if(message.type == NfcMessageTypeField) {
diff --git a/applications/nfc/nfc_i.h b/applications/nfc/nfc_i.h
index ecc18e52..0ade0471 100644
--- a/applications/nfc/nfc_i.h
+++ b/applications/nfc/nfc_i.h
@@ -28,6 +28,7 @@ struct Nfc {
 
     View* view_detect;
     View* view_read_emv;
+    View* view_emulate_emv;
     View* view_emulate;
     View* view_field;
     View* view_cli;
diff --git a/applications/nfc/nfc_types.h b/applications/nfc/nfc_types.h
index 15441ace..4cf46e97 100644
--- a/applications/nfc/nfc_types.h
+++ b/applications/nfc/nfc_types.h
@@ -72,6 +72,7 @@ typedef enum {
     // Main worker states
     NfcWorkerStatePoll,
     NfcWorkerStateReadEMV,
+    NfcWorkerStateEmulateEMV,
     NfcWorkerStateEmulate,
     NfcWorkerStateField,
     // Transition
@@ -81,6 +82,7 @@ typedef enum {
 typedef enum {
     NfcMessageTypeDetect,
     NfcMessageTypeReadEMV,
+    NfcMessageTypeEmulateEMV,
     NfcMessageTypeEmulate,
     NfcMessageTypeField,
     NfcMessageTypeStop,
diff --git a/applications/nfc/nfc_views.c b/applications/nfc/nfc_views.c
index de2c3e6c..1d10c444 100644
--- a/applications/nfc/nfc_views.c
+++ b/applications/nfc/nfc_views.c
@@ -133,6 +133,12 @@ void nfc_view_read_emv_draw(Canvas* canvas, void* model) {
     }
 }
 
+void nfc_view_emulate_emv_draw(Canvas* canvas, void* model) {
+    canvas_clear(canvas);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 0, 12, "Emulating EMV");
+}
+
 void nfc_view_emulate_draw(Canvas* canvas, void* model) {
     canvas_clear(canvas);
     canvas_set_font(canvas, FontPrimary);
diff --git a/applications/nfc/nfc_views.h b/applications/nfc/nfc_views.h
index 365186b9..9a4dbc0c 100644
--- a/applications/nfc/nfc_views.h
+++ b/applications/nfc/nfc_views.h
@@ -11,6 +11,7 @@ typedef enum {
     NfcViewMenu,
     NfcViewRead,
     NfcViewReadEmv,
+    NfcViewEmulateEMV,
     NfcViewEmulate,
     NfcViewField,
     NfcViewError,
@@ -28,6 +29,7 @@ void nfc_view_read_nfcf_draw(Canvas* canvas, NfcViewReadModel* model);
 void nfc_view_read_nfcv_draw(Canvas* canvas, NfcViewReadModel* model);
 void nfc_view_read_emv_draw(Canvas* canvas, void* model);
 
+void nfc_view_emulate_emv_draw(Canvas* canvas, void* model);
 void nfc_view_emulate_draw(Canvas* canvas, void* model);
 
 void nfc_view_field_draw(Canvas* canvas, void* model);
diff --git a/applications/nfc/nfc_worker.c b/applications/nfc/nfc_worker.c
index 074974b9..b769d31b 100755..100644
--- a/applications/nfc/nfc_worker.c
+++ b/applications/nfc/nfc_worker.c
@@ -64,6 +64,8 @@ void nfc_worker_task(void* context) {
         nfc_worker_poll(nfc_worker);
     } else if(nfc_worker->state == NfcWorkerStateReadEMV) {
         nfc_worker_read_emv(nfc_worker);
+    } else if(nfc_worker->state == NfcWorkerStateEmulateEMV) {
+        nfc_worker_emulate_emv(nfc_worker);
     } else if(nfc_worker->state == NfcWorkerStateEmulate) {
         nfc_worker_emulate(nfc_worker);
     } else if(nfc_worker->state == NfcWorkerStateField) {
@@ -77,7 +79,6 @@ void nfc_worker_task(void* context) {
 void nfc_worker_read_emv(NfcWorker* nfc_worker) {
     ReturnCode err;
     rfalNfcDevice* dev_list;
-    rfalNfcDevice* dev_active;
     EmvApplication emv_app = {};
     uint8_t dev_cnt = 0;
     uint8_t tx_buff[255] = {};
@@ -94,11 +95,9 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
         if(api_hal_nfc_detect(&dev_list, &dev_cnt, 100, false)) {
             // Card was found. Check that it supports EMV
             if(dev_list[0].rfInterface == RFAL_NFC_INTERFACE_ISODEP) {
-                dev_active = &dev_list[0];
                 FURI_LOG_I(NFC_WORKER_TAG, "Send select PPSE command");
                 tx_len = emv_prepare_select_ppse(tx_buff);
-                err = api_hal_nfc_data_exchange(
-                    dev_active, tx_buff, tx_len, &rx_buff, &rx_len, false);
+                err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
                 if(err != ERR_NONE) {
                     FURI_LOG_E(NFC_WORKER_TAG, "Error during selection PPSE request: %d", err);
                     message.type = NfcMessageTypeEMVNotFound;
@@ -117,8 +116,7 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
                 }
                 FURI_LOG_I(NFC_WORKER_TAG, "Starting application ...");
                 tx_len = emv_prepare_select_app(tx_buff, &emv_app);
-                err = api_hal_nfc_data_exchange(
-                    dev_active, tx_buff, tx_len, &rx_buff, &rx_len, false);
+                err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
                 if(err != ERR_NONE) {
                     FURI_LOG_E(
                         NFC_WORKER_TAG, "Error during application selection request: %d", err);
@@ -140,8 +138,7 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
                 }
                 FURI_LOG_I(NFC_WORKER_TAG, "Starting Get Processing Options command ...");
                 tx_len = emv_prepare_get_proc_opt(tx_buff, &emv_app);
-                err = api_hal_nfc_data_exchange(
-                    dev_active, tx_buff, tx_len, &rx_buff, &rx_len, false);
+                err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
                 if(err != ERR_NONE) {
                     FURI_LOG_E(
                         NFC_WORKER_TAG, "Error during Get Processing Options command: %d", err);
@@ -171,7 +168,7 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
                         for(uint8_t record = record_start; record <= record_end; ++record) {
                             tx_len = emv_prepare_read_sfi_record(tx_buff, sfi, record);
                             err = api_hal_nfc_data_exchange(
-                                dev_active, tx_buff, tx_len, &rx_buff, &rx_len, false);
+                                tx_buff, tx_len, &rx_buff, &rx_len, false);
                             if(err != ERR_NONE) {
                                 FURI_LOG_E(
                                     NFC_WORKER_TAG,
@@ -215,6 +212,61 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
     api_hal_nfc_deactivate();
 }
 
+void nfc_worker_emulate_emv(NfcWorker* nfc_worker) {
+    ReturnCode err;
+    uint8_t tx_buff[255] = {};
+    uint16_t tx_len = 0;
+    uint8_t* rx_buff;
+    uint16_t* rx_len;
+
+    while(nfc_worker->state == NfcWorkerStateEmulateEMV) {
+        if(api_hal_nfc_listen(1000)) {
+            FURI_LOG_I(NFC_WORKER_TAG, "POS terminal detected");
+            // Read data from POS terminal
+            err = api_hal_nfc_data_exchange(NULL, 0, &rx_buff, &rx_len, false);
+            if(err == ERR_NONE) {
+                FURI_LOG_I(NFC_WORKER_TAG, "Received Select PPSE");
+            } else {
+                FURI_LOG_E(NFC_WORKER_TAG, "Error in 1st data exchange: select PPSE");
+                api_hal_nfc_deactivate();
+                continue;
+            }
+            FURI_LOG_I(NFC_WORKER_TAG, "Transive SELECT PPSE ANS");
+            tx_len = emv_select_ppse_ans(tx_buff);
+            err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
+            if(err == ERR_NONE) {
+                FURI_LOG_I(NFC_WORKER_TAG, "Received Select APP");
+            } else {
+                FURI_LOG_E(NFC_WORKER_TAG, "Error in 2nd data exchange: select APP");
+                api_hal_nfc_deactivate();
+                continue;
+            }
+
+            FURI_LOG_I(NFC_WORKER_TAG, "Transive SELECT APP ANS");
+            tx_len = emv_select_app_ans(tx_buff);
+            err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
+            if(err == ERR_NONE) {
+                FURI_LOG_I(NFC_WORKER_TAG, "Received PDOL");
+            } else {
+                FURI_LOG_E(NFC_WORKER_TAG, "Error in 3rd data exchange: receive PDOL");
+                api_hal_nfc_deactivate();
+                continue;
+            }
+
+            FURI_LOG_I(NFC_WORKER_TAG, "Transive PDOL ANS");
+            tx_len = emv_get_proc_opt_ans(tx_buff);
+            err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
+            if(err == ERR_NONE) {
+                FURI_LOG_I(NFC_WORKER_TAG, "Received PDOL");
+            }
+            api_hal_nfc_deactivate();
+        } else {
+            FURI_LOG_W(NFC_WORKER_TAG, "Can't find reader");
+        }
+        osDelay(20);
+    }
+}
+
 void nfc_worker_poll(NfcWorker* nfc_worker) {
     rfalNfcDevice* dev_list;
     uint8_t dev_cnt;
@@ -249,7 +301,7 @@ void nfc_worker_poll(NfcWorker* nfc_worker) {
             furi_check(
                 osMessageQueuePut(nfc_worker->message_queue, &message, 0, osWaitForever) == osOK);
         }
-        osDelay(20);
+        osDelay(5);
     }
 }
 
diff --git a/applications/nfc/nfc_worker_i.h b/applications/nfc/nfc_worker_i.h
index 7877aca5..ba85f4b6 100644
--- a/applications/nfc/nfc_worker_i.h
+++ b/applications/nfc/nfc_worker_i.h
@@ -31,6 +31,8 @@ void nfc_worker_task(void* context);
 
 void nfc_worker_read_emv(NfcWorker* nfc_worker);
 
+void nfc_worker_emulate_emv(NfcWorker* nfc_worker);
+
 void nfc_worker_poll(NfcWorker* nfc_worker);
 
 void nfc_worker_emulate(NfcWorker* nfc_worker);