NFC Magic: New functions for Gen4 cards (DW to block 0/shadow mode)

nfc_magic/.catalog/changelog.md

@@ -1,3 +1,11 @@
+## 1.9
+ - Get revision, get config moved into main Gen4 menu
+ - New function: Set Gen4 card shadow mode
+ - New function: Set Gen4 card direct write to block 0 mode
+ - Fixed: back button did not allow to exit from some scenes while the card is next to the Flipper HF RFID antenna
+ - Gen4 protocol refactor
+ - Gen4 UI refactor
+
 ## 1.8
  - Ultralight Various fixes and improvements
 

nfc_magic/magic/nfc_magic_scanner.c

@@ -1,5 +1,7 @@
 #include "nfc_magic_scanner.h"
 
+#include "core/check.h"
+#include "protocols/gen4/gen4.h"
 #include "protocols/gen1a/gen1a_poller.h"
 #include "protocols/gen2/gen2_poller.h"
 #include "protocols/gen4/gen4_poller.h"
@@ -18,7 +20,8 @@ struct NfcMagicScanner {
     NfcMagicScannerSessionState session_state;
     NfcMagicProtocol current_protocol;
 
-    uint32_t gen4_password;
+    Gen4Password gen4_password;
+    Gen4* gen4_data;
     bool magic_protocol_detected;
 
     NfcMagicScannerCallback callback;
@@ -43,17 +46,19 @@ NfcMagicScanner* nfc_magic_scanner_alloc(Nfc* nfc) {
 
     NfcMagicScanner* instance = malloc(sizeof(NfcMagicScanner));
     instance->nfc = nfc;
+    instance->gen4_data = gen4_alloc();
 
     return instance;
 }
 
 void nfc_magic_scanner_free(NfcMagicScanner* instance) {
     furi_assert(instance);
 
+    gen4_free(instance->gen4_data);
     free(instance);
 }
 
-void nfc_magic_scanner_set_gen4_password(NfcMagicScanner* instance, uint32_t password) {
+void nfc_magic_scanner_set_gen4_password(NfcMagicScanner* instance, Gen4Password password) {
     furi_assert(instance);
 
     instance->gen4_password = password;
@@ -73,9 +78,13 @@ static int32_t nfc_magic_scanner_worker(void* context) {
                     break;
                 }
             } else if(instance->current_protocol == NfcMagicProtocolGen4) {
-                Gen4PollerError error = gen4_poller_detect(instance->nfc, instance->gen4_password);
+                gen4_reset(instance->gen4_data);
+                Gen4 gen4_data;
+                Gen4PollerError error =
+                    gen4_poller_detect(instance->nfc, instance->gen4_password, &gen4_data);
                 instance->magic_protocol_detected = (error == Gen4PollerErrorNone);
                 if(instance->magic_protocol_detected) {
+                    gen4_copy(instance->gen4_data, &gen4_data);
                     break;
                 }
             } else if(instance->current_protocol == NfcMagicProtocolGen2) {
@@ -162,3 +171,9 @@ void nfc_magic_scanner_stop(NfcMagicScanner* instance) {
     instance->callback = NULL;
     instance->context = NULL;
 }
+
+const Gen4* nfc_magic_scanner_get_gen4_data(NfcMagicScanner* instance) {
+    furi_assert(instance);
+
+    return instance->gen4_data;
+}

nfc_magic/magic/nfc_magic_scanner.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "protocols/gen4/gen4.h"
 #include <nfc/nfc.h>
 #include "protocols/nfc_magic_protocols.h"
 
@@ -30,7 +31,7 @@ NfcMagicScanner* nfc_magic_scanner_alloc(Nfc* nfc);
 
 void nfc_magic_scanner_free(NfcMagicScanner* instance);
 
-void nfc_magic_scanner_set_gen4_password(NfcMagicScanner* instance, uint32_t password);
+void nfc_magic_scanner_set_gen4_password(NfcMagicScanner* instance, Gen4Password password);
 
 void nfc_magic_scanner_start(
     NfcMagicScanner* instance,
@@ -39,6 +40,8 @@ void nfc_magic_scanner_start(
 
 void nfc_magic_scanner_stop(NfcMagicScanner* instance);
 
+const Gen4* nfc_magic_scanner_get_gen4_data(NfcMagicScanner* instance);
+
 #ifdef __cplusplus
 }
 #endif

nfc_magic/magic/protocols/gen4/gen4.c

@@ -0,0 +1,120 @@
+#include "gen4.h"
+#include "core/check.h"
+
+Gen4* gen4_alloc() {
+    Gen4* instance = malloc(sizeof(Gen4));
+
+    return instance;
+}
+
+void gen4_free(Gen4* instance) {
+    furi_check(instance);
+
+    free(instance);
+}
+
+void gen4_reset(Gen4* instance) {
+    furi_check(instance);
+
+    memset(&instance->config, 0, sizeof(Gen4Config));
+    memset(&instance->revision, 0, sizeof(Gen4Revision));
+}
+
+void gen4_copy(Gen4* dest, const Gen4* source) {
+    furi_check(dest);
+    furi_check(source);
+
+    memcpy(dest, source, sizeof(Gen4));
+}
+
+bool gen4_password_is_set(const Gen4Password* instance) {
+    furi_check(instance);
+
+    return (instance->bytes[0] || instance->bytes[1] || instance->bytes[2] || instance->bytes[3]);
+}
+
+void gen4_password_reset(Gen4Password* instance) {
+    furi_check(instance);
+
+    memset(instance->bytes, 0, GEN4_PASSWORD_LEN);
+}
+
+void gen4_password_copy(Gen4Password* dest, const Gen4Password* source) {
+    furi_check(dest);
+    furi_check(source);
+
+    memcpy(dest->bytes, source->bytes, GEN4_PASSWORD_LEN);
+}
+
+const char* gen4_get_shadow_mode_name(Gen4ShadowMode mode) {
+    switch(mode) {
+    case Gen4ShadowModePreWrite:
+        return "Pre-Write";
+    case Gen4ShadowModeRestore:
+        return "Restore";
+    case Gen4ShadowModeDisabled:
+        return "Disabled";
+    case Gen4ShadowModeHighSpeedDisabled:
+        return "Disabled (High-speed)";
+    case Gen4ShadowModeSplit:
+        return "Split";
+    default:
+        return "Unknown";
+    }
+}
+
+const char* gen4_get_direct_write_mode_name(Gen4DirectWriteBlock0Mode mode) {
+    switch(mode) {
+    case Gen4DirectWriteBlock0ModeEnabled:
+        return "Enabled";
+    case Gen4DirectWriteBlock0ModeDisabled:
+        return "Disabled";
+    case Gen4DirectWriteBlock0ModeDefault:
+        return "Default";
+    default:
+        return "Unknown";
+    }
+}
+
+const char* gen4_get_uid_len_num(Gen4UIDLength code) {
+    switch(code) {
+    case Gen4UIDLengthSingle:
+        return "4";
+    case Gen4UIDLengthDouble:
+        return "7";
+    case Gen4UIDLengthTriple:
+        return "10";
+    default:
+        return "Unknown";
+    }
+}
+
+const char* gen4_get_configuration_name(const Gen4Config* config) {
+    switch(config->data_parsed.protocol) {
+    case Gen4ProtocolMfClassic: {
+        switch(config->data_parsed.total_blocks) {
+        case 255:
+            return "MIFARE Classic 4K";
+        case 63:
+            return "MIFARE Classic 1K";
+        case 19:
+            return "MIFARE Classic Mini (0.3K)";
+        default:
+            return "Unknown";
+        }
+    } break;
+    case Gen4ProtocolMfUltralight: {
+        switch(config->data_parsed.total_blocks) {
+        case 63:
+            return "MIFARE Ultralight";
+        case 127:
+            return "NTAG 2XX";
+        default:
+            return "Unknown";
+        }
+    } break;
+    default:
+        return "Unknown";
+        break;
+    };
+}

nfc_magic/magic/protocols/gen4/gen4.h

@@ -0,0 +1,105 @@
+#pragma once
+
+#include "core/common_defines.h"
+#include <stdint.h>
+
+#define GEN4_CONFIG_SIZE (32)
+#define GEN4_REVISION_SIZE (5)
+
+#define GEN4_PASSWORD_LEN (4)
+#define GEN4_ATS_MAX_LEN (16)
+#define GEN4_ATQA_LEN (2)
+#define GEN4_CRC_LEN (2)
+
+typedef enum {
+    Gen4ProtocolMfClassic = 0x00,
+    Gen4ProtocolMfUltralight = 0x01,
+} Gen4Protocol;
+
+typedef struct {
+    uint8_t bytes[GEN4_PASSWORD_LEN];
+} Gen4Password;
+
+typedef enum {
+    Gen4UIDLengthSingle = 0x00,
+    Gen4UIDLengthDouble = 0x01,
+    Gen4UIDLengthTriple = 0x02
+} Gen4UIDLength;
+
+typedef enum {
+    Gen4UltralightModeUL_EV1 = 0x00,
+    Gen4UltralightModeNTAG = 0x01,
+    Gen4UltralightModeUL_C = 0x02,
+    Gen4UltralightModeUL = 0x03
+} Gen4UltralightMode;
+
+typedef enum {
+    // for writing original (shadow) data
+    Gen4ShadowModePreWrite = 0x00,
+    // written data can be read once before restored to original
+    Gen4ShadowModeRestore = 0x01,
+    // shadow mode disabled
+    Gen4ShadowModeDisabled = 0x02,
+    // apparently for UL?
+    Gen4ShadowModeHighSpeedDisabled = 0x03,
+    // work with new UMC. With old UMC is untested
+    Gen4ShadowModeSplit = 0x04,
+} Gen4ShadowMode;
+
+typedef enum {
+    // gen2 card behavour
+    Gen4DirectWriteBlock0ModeEnabled = 0x00,
+    // common card behavour
+    Gen4DirectWriteBlock0ModeDisabled = 0x01,
+    // default mode. same behavour as Gen4DirectWriteBlock0ModeActivate
+    Gen4DirectWriteBlock0ModeDefault = 0x02,
+} Gen4DirectWriteBlock0Mode;
+
+typedef union {
+    uint8_t data_raw[GEN4_CONFIG_SIZE];
+    struct {
+        Gen4Protocol protocol;
+        Gen4UIDLength uid_len_code;
+        Gen4Password password;
+        Gen4ShadowMode gtu_mode;
+        uint8_t ats_len;
+        uint8_t ats[GEN4_ATS_MAX_LEN]; // mb another class?
+        uint8_t atqa[GEN4_ATQA_LEN];
+        uint8_t sak;
+        Gen4UltralightMode mfu_mode;
+        uint8_t total_blocks;
+        Gen4DirectWriteBlock0Mode direct_write_mode;
+        uint8_t crc[GEN4_CRC_LEN];
+    } FURI_PACKED data_parsed;
+} Gen4Config;
+
+typedef struct {
+    uint8_t data[GEN4_REVISION_SIZE];
+} Gen4Revision;
+
+typedef struct {
+    Gen4Config config;
+    Gen4Revision revision;
+} Gen4;
+
+Gen4* gen4_alloc();
+
+void gen4_free(Gen4* instance);
+
+void gen4_reset(Gen4* instance);
+
+void gen4_copy(Gen4* dest, const Gen4* source);
+
+bool gen4_password_is_set(const Gen4Password* instance);
+
+void gen4_password_reset(Gen4Password* instance);
+
+void gen4_password_copy(Gen4Password* dest, const Gen4Password* source);
+
+const char* gen4_get_shadow_mode_name(Gen4ShadowMode mode);
+
+const char* gen4_get_direct_write_mode_name(Gen4DirectWriteBlock0Mode mode);
+
+const char* gen4_get_uid_len_num(Gen4UIDLength code);
+
+const char* gen4_get_configuration_name(const Gen4Config* config);