1077 Set 4MB size limit for images

src/main/java/ai/elimu/util/ImageHelper.java

@@ -13,7 +13,9 @@
 public class ImageHelper {
 
     public static final int MINIMUM_WIDTH = 640;
-
+
+    public static final int MAX_MB = 4194304; // 4MB
+
     private static Logger logger = LogManager.getLogger();
 
     /** 

src/main/java/ai/elimu/web/content/multimedia/image/ImageCreateController.java

@@ -40,6 +40,8 @@
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.multipart.support.ByteArrayMultipartFileEditor;
 
+import static ai.elimu.util.ImageHelper.MAX_MB;
+
 @Controller
 @RequestMapping("/content/multimedia/image/create")
 public class ImageCreateController {
@@ -95,7 +97,7 @@ public String handleSubmit(
             } else {
                 String originalFileName = multipartFile.getOriginalFilename();
                 logger.info("originalFileName: " + originalFileName);
-                
+
                 byte[] headerBytes = Arrays.copyOfRange(bytes, 0, 6);
                 byte[] gifHeader87a = {71, 73, 70, 56, 55, 97}; // "GIF87a"
                 byte[] gifHeader89a = {71, 73, 70, 56, 57, 97}; // "GIF89a"
@@ -133,6 +135,11 @@ public String handleSubmit(
                         }
                     }
                 }
+
+                if (bytes.length > MAX_MB) {
+                    result.rejectValue("bytes", "image.too.big");
+                }
+
             }
         } catch (IOException e) {
             logger.error(e);

src/main/webapp/WEB-INF/i18n/errors_en.properties

@@ -30,5 +30,6 @@ typeMismatch.thumbnail=Valid thumbnail format: PNG
 typeMismatch.java.lang.Integer={0} must be a number
 formatHint.Integer=Number (e.g. "5000")
 image.too.small=The image width must be at least 640px
+image.too.big=The image size is too big
 emoji.unicode.version=Only emojis up to Unicode version 9
 WordSpace=Spaces are not allowed