Finally fix GW downgraded NANDs (thanks GW for the easily recognizable junk)

injector/source/patcher.c

@@ -77,19 +77,39 @@ static void loadCustomVerString(u16 *out, u32 *verStringSize)
     {
         u64 fileSize;
 
-        if(R_SUCCEEDED(IFile_GetSize(&file, &fileSize)) && fileSize <= 19)
+        if(R_SUCCEEDED(IFile_GetSize(&file, &fileSize)) && fileSize <= 60)
         {
-            u8 buf[19];
+            u8 buf[fileSize];
             u64 total;
 
             if(R_SUCCEEDED(IFile_Read(&file, &total, buf, fileSize)))
             {
-                *verStringSize = (u32)fileSize;
+                static const u8 bom[] = {0xEF, 0xBB, 0xBF};
+                u32 finalSize = 0;
 
-                for(u32 i = 0; i < *verStringSize; i++)
+                //Convert from UTF-8 to UTF-16 (Nintendo doesn't support 4-byte UTF-16, so 4-byte UTF-8 is unsupported)
-                    ((u8 *)out)[2 * i] = buf[i];
+                for(u32 increase, fileSizeTmp = (u32)fileSize, i = (fileSizeTmp > 2 && memcmp(buf, bom, 3) == 0) ? 3 : 0;
+                    i < fileSizeTmp && finalSize < 19; i += increase, finalSize++)
+                {
+                    if((buf[i] & 0x80) == 0)
+                    {
+                        increase = 1;
+                        out[finalSize] = (u16)buf[i];
+                    }
+                    else if((buf[i] & 0xE0) == 0xC0 && i + 1 < fileSizeTmp && (buf[i + 1] & 0xC0) == 0x80)
+                    {
+                        increase = 2;
+                        out[finalSize] = (u16)(((buf[i] & 0x1F) << 6) | (buf[i + 1] & 0x3F));
+                    }
+                    else if((buf[i] & 0xF0) == 0xE0 && i + 2 < fileSizeTmp && (buf[i + 1] & 0xC0) == 0x80 && (buf[i + 2] & 0xC0) == 0x80)
+                    {
+                        increase = 3;
+                        out[finalSize] = (u16)(((buf[i] & 0xF) << 12) | ((buf[i + 1] & 0x3F) << 6) | (buf[i + 2] & 0x3F));
+                    }
+                    else break;
+                }
 
-                *verStringSize *= 2;
+                if(finalSize > 0) *verStringSize = finalSize * 2;
             }
         }
 
@@ -152,7 +172,7 @@ static void loadTitleLocaleConfig(u64 progId, u8 *regionId, u8 *languageId)
                         break;
                     }
                 }
-        
+
                 for(u32 i = 0; i < 12; i++)
                 {
                     static const char *languages[] = {"JP", "EN", "FR", "DE", "IT", "ES", "ZH", "KO", "NL", "PT", "RU", "TW"};
@@ -378,12 +398,12 @@ void patchCode(u64 progId, u8 *code, u32 size)
             {
                 static const u16 verPattern[] = u"Ver.";
                 static u16 *verString;
-                u32 verStringSize;
+                u32 verStringSize = 0;
 
-                u16 customVerString[19] = {0};
+                u16 customVerString[19];
                 loadCustomVerString(customVerString, &verStringSize);
 
-                if(customVerString[0] != 0) verString = customVerString;
+                if(verStringSize != 0) verString = customVerString;
                 else
                 {
                     verStringSize = 8;

source/firm.c

@@ -174,7 +174,7 @@ void main(void)
 
                 /* If L and R/A/Select or one of the single payload buttons are pressed,
                    chainload an external payload */
-                bool shouldLoadPayload = ((pressed & SINGLE_PAYLOAD_BUTTONS) && !(pressed & (BUTTON_L1 | BUTTON_R1))) ||
+                bool shouldLoadPayload = ((pressed & SINGLE_PAYLOAD_BUTTONS) && !(pressed & (BUTTON_L1 | BUTTON_R1 | BUTTON_A))) ||
                                          ((pressed & L_PAYLOAD_BUTTONS) && (pressed & BUTTON_L1));
 
                 if(shouldLoadPayload) loadPayload(pressed);

source/fs.c

@@ -169,7 +169,7 @@ u32 firmRead(void *dest, u32 firmType)
     while(f_readdir(&dir, &info) == FR_OK && info.fname[0])
     {
         //Not a cxi
-        if(info.altname[9] != 'A') continue;
+        if(info.fname[9] != 'a') continue;
 
         //Convert the .app name to an integer
         u32 tempVersion = 0;