backward compatibility, on load converter for old mfu dump format

armsrc/iso14443a.c

@@ -1318,6 +1318,9 @@ void SimulateIso14443aTag(int tagType, int flags, uint8_t *data) {
                     p_response = NULL;
                 }
             }
+        } else if (receivedCmd[0] == MIFARE_ULEV1_VCSL) {
+            EmSend4bit(CARD_NACK_NA);
+            p_response = NULL;
         } else {
             // Check for ISO 14443A-4 compliant commands, look at left nibble
             switch (receivedCmd[0]) {
@@ -1371,8 +1374,10 @@ void SimulateIso14443aTag(int tagType, int flags, uint8_t *data) {
                 default: {
                     // Never seen this command before
                     LogTrace(receivedCmd, Uart.len, Uart.startTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);
-                    Dbprintf("Received unknown command (len=%d):", len);
+                    if (MF_DBGLEVEL >= 3) {
-                    Dbhexdump(len, receivedCmd, false);
+                        Dbprintf("Received unknown command (len=%d):", len);
+                        Dbhexdump(len, receivedCmd, false);
+                    }
                     // Do not respond
                     dynamic_response_info.response_n = 0;
                 }
@@ -1388,7 +1393,7 @@ void SimulateIso14443aTag(int tagType, int flags, uint8_t *data) {
                 dynamic_response_info.response_n += 2;
 
                 if (prepare_tag_modulation(&dynamic_response_info, DYNAMIC_MODULATION_BUFFER_SIZE) == false) {
-                    DbpString("Error preparing tag response");
+                    if (MF_DBGLEVEL >= 3) DbpString("Error preparing tag response");
                     LogTrace(receivedCmd, Uart.len, Uart.startTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);
                     break;
                 }

client/cmdhfmf.c

@@ -2590,6 +2590,16 @@ int CmdHF14AMfELoad(const char *Cmd) {
         return 2;
     }
 
+    // convert old mfu format to new
+    if (blockWidth == 4) {
+        res = convertOldMfuDump(&data, &datalen);
+        if (res) {
+            PrintAndLogEx(FAILED, "Failed convert on load to new Ultralight/NTAG format");
+            free(data);
+            return res;
+        }
+    }
+
     PrintAndLogEx(INFO, "Copying to emulator memory");
 
     blockNum = 0;

client/cmdhfmfu.c

@@ -1973,7 +1973,7 @@ static int CmdHF14AMfUDump(const char *Cmd) {
         fptr += sprintf(fptr, "hf-mfu-");
         FillFileNameByUID(fptr, card.uid, "-dump", card.uidlen);
     }
-    uint16_t datalen = pages * 4 + DUMP_PREFIX_LENGTH;
+    uint16_t datalen = pages * 4 + MFU_DUMP_PREFIX_LENGTH;
     saveFile(filename, "bin", (uint8_t *)&dump_file_data, datalen);
     saveFileJSON(filename, "json", jsfMfuMemory, (uint8_t *)&dump_file_data, datalen);
 
@@ -2094,14 +2094,22 @@ static int CmdHF14AMfURestore(const char *Cmd) {
     // read all data
     size_t bytes_read = fread(dump, 1, fsize, f);
     fclose(f);
-    if (bytes_read < DUMP_PREFIX_LENGTH) {
+    if (bytes_read < MFU_DUMP_PREFIX_LENGTH) {
         PrintAndLogEx(WARNING, "Error, dump file is too small");
         free(dump);
         return 1;
     }
 
+    // convert old format to new format, if need
+    int res = convertOldMfuDump(&dump, &bytes_read);
+    if (res) {
+        PrintAndLogEx(WARNING, "Failed convert on load to new Ultralight/NTAG format");
+        free(dump);
+        return res;
+    }
+
     mfu_dump_t *mem = (mfu_dump_t *)dump;
-    uint8_t pages = (bytes_read - DUMP_PREFIX_LENGTH) / 4;
+    uint8_t pages = (bytes_read - MFU_DUMP_PREFIX_LENGTH) / 4;
 
     if (pages - 1 != mem->pages) {
         PrintAndLogEx(WARNING, "Error, invalid dump, wrong page count");
@@ -2142,7 +2150,7 @@ static int CmdHF14AMfURestore(const char *Cmd) {
 
             if (read_key) {
                 // try reading key from dump and use.
-                memcpy(c.d.asBytes, mem->data + (bytes_read - DUMP_PREFIX_LENGTH - 8), 4);
+                memcpy(c.d.asBytes, mem->data + (bytes_read - MFU_DUMP_PREFIX_LENGTH - 8), 4);
             } else {
                 memcpy(c.d.asBytes,  p_authkey, 4);
             }
@@ -2160,7 +2168,7 @@ static int CmdHF14AMfURestore(const char *Cmd) {
 
         // pack now stored in dump
         c.arg[0] = MFU_NTAG_SPECIAL_PACK;
-        memcpy(c.d.asBytes, mem->data + (bytes_read - DUMP_PREFIX_LENGTH - 4), 2);
+        memcpy(c.d.asBytes, mem->data + (bytes_read - MFU_DUMP_PREFIX_LENGTH - 4), 2);
         c.d.asBytes[2] = 0;
         c.d.asBytes[3] = 0;
         PrintAndLogEx(NORMAL, "special PACK    block written 0x%X - %s\n", MFU_NTAG_SPECIAL_PACK, sprint_hex(c.d.asBytes, 4));

client/cmdhfmfu.h

@@ -12,8 +12,10 @@
 #include "comms.h"
 #include "loclass/fileutils.h"
 
+
+// New Ultralight/NTAG dump file format
 // Length must be aligned to 4 bytes (UL/NTAG page)
-#define DUMP_PREFIX_LENGTH 56
+#define MFU_DUMP_PREFIX_LENGTH 56
 
 typedef struct {
     uint8_t version[8];
@@ -25,6 +27,22 @@ typedef struct {
     uint8_t data[1024];
 } mfu_dump_t;
 
+// Old Ultralight/NTAG dump file format
+// It is used only for converting
+#define OLD_MFU_DUMP_PREFIX_LENGTH 48
+
+typedef struct {
+    uint8_t version[8];
+    uint8_t tbo[2];
+    uint8_t tearing[3];
+    uint8_t pack[2];
+    uint8_t tbo1[1];
+    uint8_t signature[32];
+    //uint8_t counter[3];
+    uint8_t data[1024];
+} old_mfu_dump_t;
+
+
 uint32_t GetHF14AMfU_Type(void);
 int ul_print_type(uint32_t tagtype, uint8_t spaces);
 

client/loclass/fileutils.c

@@ -233,7 +233,7 @@ int saveFileJSON(const char *preferredName, const char *suffix, JSONFileType fty
             }
 
             // size of header 56b
-            size_t len = (datalen - DUMP_PREFIX_LENGTH) / 4;
+            size_t len = (datalen - MFU_DUMP_PREFIX_LENGTH) / 4;
 
             for (size_t i = 0; i < len; i++) {
                 sprintf(path, "$.blocks.%zu", i);
@@ -568,6 +568,41 @@ out:
     return retval;
 }
 
+int convertOldMfuDump(uint8_t **dump, size_t *dumplen) {
+    if (!dump || !dumplen || *dumplen < OLD_MFU_DUMP_PREFIX_LENGTH)
+        return 1;
+    // try to check new file format
+    mfu_dump_t *mfu_dump = (mfu_dump_t *) *dump;
+    if ((*dumplen - MFU_DUMP_PREFIX_LENGTH) / 4 - 1 == mfu_dump->pages)
+        return 0;
+    // convert old format
+    old_mfu_dump_t *old_mfu_dump = (old_mfu_dump_t *) *dump;
+
+    size_t old_data_len = *dumplen - OLD_MFU_DUMP_PREFIX_LENGTH;
+    size_t new_dump_len = old_data_len + MFU_DUMP_PREFIX_LENGTH;
+
+    mfu_dump = (mfu_dump_t *) calloc(new_dump_len, sizeof(uint8_t));
+
+    memcpy(mfu_dump->version, old_mfu_dump->version, 8);
+    mfu_dump->tbo[0] = old_mfu_dump->tbo[0];
+    mfu_dump->tbo[1] = old_mfu_dump->tbo[1];
+    mfu_dump->tbo1[0] = old_mfu_dump->tbo1[0];
+    memcpy(mfu_dump->signature, old_mfu_dump->signature, 32);
+    mfu_dump->counter_tearing[0][3] = old_mfu_dump->tearing[0];
+    mfu_dump->counter_tearing[1][3] = old_mfu_dump->tearing[1];
+    mfu_dump->counter_tearing[2][3] = old_mfu_dump->tearing[2];
+
+    memcpy(mfu_dump->data, old_mfu_dump->data, old_data_len);
+    mfu_dump->pages = old_data_len / 4 - 1;
+    // free old buffer, return new buffer
+    *dumplen = new_dump_len;
+    free(*dump);
+    *dump = (uint8_t *) mfu_dump;
+    PrintAndLogDevice(SUCCESS, "old mfu dump format, was converted on load to " _GREEN_("%d") " pages", mfu_dump->pages + 1);
+    return 0;
+}
+
+
 #else //if we're on ARM
 
 #endif

client/loclass/fileutils.h

@@ -158,6 +158,15 @@ int loadFileJSON(const char *preferredName, const char *suffix, void *data, size
 */
 int loadFileDICTIONARY(const char *preferredName, const char *suffix, void *data, size_t *datalen, uint8_t keylen, uint16_t *keycnt);
 
+/**
+ * @brief  Utility function to check and convert old mfu dump format to new
+ *
+ * @param dump pointer to loaded dump to check and convert format
+ * @param dumplen the number of bytes loaded dump and converted
+ * @return 0 for ok, 1 for fails
+*/
+int convertOldMfuDump(uint8_t **dump, size_t *dumplen);
+
 #define PrintAndLogDevice(level, format, args...)  PrintAndLogEx(level, format , ## args)
 #else
 
@@ -171,6 +180,7 @@ int loadFileDICTIONARY(const char *preferredName, const char *suffix, void *data
 #define PrintAndLogDevice(level, format, args...) { }
 
 
+
 #endif //ON_DEVICE
 
 #endif // FILEUTILS_H