[FL-3241] NFC disable EMV support (#2571)

* nfc: remove read emv from extra actions
* nfc: remove read emv

Co-authored-by: あく <alleteam@gmail.com>

lib/nfc/nfc_device.h

@@ -56,7 +56,6 @@ typedef enum {
     NfcReadModeMfClassic,
     NfcReadModeMfUltralight,
     NfcReadModeMfDesfire,
-    NfcReadModeEMV,
     NfcReadModeNFCA,
 } NfcReadMode;
 

lib/nfc/nfc_worker.c

@@ -229,69 +229,6 @@ static bool nfc_worker_read_mf_desfire(NfcWorker* nfc_worker, FuriHalNfcTxRxCont
     return read_success;
 }
 
-static bool nfc_worker_read_bank_card(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
-    bool read_success = false;
-    EmvApplication emv_app = {};
-    EmvData* result = &nfc_worker->dev_data->emv_data;
-
-    if(furi_hal_rtc_is_flag_set(FuriHalRtcFlagDebug)) {
-        reader_analyzer_prepare_tx_rx(nfc_worker->reader_analyzer, tx_rx, false);
-        reader_analyzer_start(nfc_worker->reader_analyzer, ReaderAnalyzerModeDebugLog);
-    }
-
-    // Bank cards require strong field to start application. If we find AID, try at least several
-    // times to start EMV application
-    uint8_t start_application_attempts = 0;
-    while(start_application_attempts < 3) {
-        if(nfc_worker->state != NfcWorkerStateRead) break;
-        start_application_attempts++;
-        if(!furi_hal_nfc_detect(&nfc_worker->dev_data->nfc_data, 300)) break;
-        if(emv_read_bank_card(tx_rx, &emv_app)) {
-            FURI_LOG_D(TAG, "Bank card number read from %d attempt", start_application_attempts);
-            break;
-        } else if(emv_app.aid_len && !emv_app.app_started) {
-            FURI_LOG_D(
-                TAG,
-                "AID found but failed to start EMV app from %d attempt",
-                start_application_attempts);
-            furi_hal_nfc_sleep();
-            continue;
-        } else {
-            FURI_LOG_D(TAG, "Failed to find AID");
-            break;
-        }
-    }
-    // Copy data
-    if(emv_app.aid_len) {
-        result->aid_len = emv_app.aid_len;
-        memcpy(result->aid, emv_app.aid, result->aid_len);
-        read_success = true;
-    }
-    if(emv_app.card_number_len) {
-        result->number_len = emv_app.card_number_len;
-        memcpy(result->number, emv_app.card_number, result->number_len);
-    }
-    if(emv_app.name_found) {
-        memcpy(result->name, emv_app.name, sizeof(emv_app.name));
-    }
-    if(emv_app.exp_month) {
-        result->exp_mon = emv_app.exp_month;
-        result->exp_year = emv_app.exp_year;
-    }
-    if(emv_app.country_code) {
-        result->country_code = emv_app.country_code;
-    }
-    if(emv_app.currency_code) {
-        result->currency_code = emv_app.currency_code;
-    }
-
-    if(furi_hal_rtc_is_flag_set(FuriHalRtcFlagDebug)) {
-        reader_analyzer_stop(nfc_worker->reader_analyzer);
-    }
-
-    return read_success;
-}
-
 static bool nfc_worker_read_nfca(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
     FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
 
@@ -315,14 +252,6 @@ static bool nfc_worker_read_nfca(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* t
             nfc_worker->dev_data->protocol = NfcDeviceProtocolUnknown;
         }
         card_read = true;
-    } else if(nfc_data->interface == FuriHalNfcInterfaceIsoDep) {
-        FURI_LOG_I(TAG, "ISO14443-4 card detected");
-        nfc_worker->dev_data->protocol = NfcDeviceProtocolEMV;
-        if(!nfc_worker_read_bank_card(nfc_worker, tx_rx)) {
-            FURI_LOG_I(TAG, "Unknown card. Save UID");
-            nfc_worker->dev_data->protocol = NfcDeviceProtocolUnknown;
-        }
-        card_read = true;
     } else {
         nfc_worker->dev_data->protocol = NfcDeviceProtocolUnknown;
         card_read = true;
@@ -358,9 +287,6 @@ void nfc_worker_read(NfcWorker* nfc_worker) {
                     } else if(dev_data->protocol == NfcDeviceProtocolMifareDesfire) {
                         event = NfcWorkerEventReadMfDesfire;
                         break;
-                    } else if(dev_data->protocol == NfcDeviceProtocolEMV) {
-                        event = NfcWorkerEventReadBankCard;
-                        break;
                     } else if(dev_data->protocol == NfcDeviceProtocolUnknown) {
                         event = NfcWorkerEventReadUidNfcA;
                         break;
@@ -444,12 +370,6 @@ void nfc_worker_read_type(NfcWorker* nfc_worker) {
                         event = NfcWorkerEventReadMfDesfire;
                         break;
                     }
-                } else if(read_mode == NfcReadModeEMV) {
-                    nfc_worker->dev_data->protocol = NfcDeviceProtocolEMV;
-                    if(nfc_worker_read_bank_card(nfc_worker, &tx_rx)) {
-                        event = NfcWorkerEventReadBankCard;
-                        break;
-                    }
                 } else if(read_mode == NfcReadModeNFCA) {
                     nfc_worker->dev_data->protocol = NfcDeviceProtocolUnknown;
                     event = NfcWorkerEventReadUidNfcA;

lib/nfc/nfc_worker.h

@@ -39,7 +39,6 @@ typedef enum {
     NfcWorkerEventReadMfClassicDone,
     NfcWorkerEventReadMfClassicLoadKeyCache,
     NfcWorkerEventReadMfClassicDictAttackRequired,
-    NfcWorkerEventReadBankCard,
 
     // Nfc worker common events
     NfcWorkerEventSuccess,

lib/nfc/nfc_worker_i.h

@@ -6,7 +6,6 @@
 #include <lib/toolbox/stream/file_stream.h>
 
 #include <lib/nfc/protocols/nfc_util.h>
-#include <lib/nfc/protocols/emv.h>
 #include <lib/nfc/protocols/mifare_common.h>
 #include <lib/nfc/protocols/mifare_ultralight.h>
 #include <lib/nfc/protocols/mifare_classic.h>