From ddbbc63aaebfff4a5c4566f36b5f1a98dd7e6d84 Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Sat, 31 Aug 2019 17:10:51 +0200
Subject: [PATCH] Require bytes greater 0

---
 .../main/java/org/jivesoftware/smackx/avatar/MetadataInfo.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/avatar/MetadataInfo.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/avatar/MetadataInfo.java
index 0144f22f2..8972ee069 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/avatar/MetadataInfo.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/avatar/MetadataInfo.java
@@ -55,6 +55,9 @@ public class MetadataInfo {
     public MetadataInfo(String id, URL url, long bytes, String type, int pixelsHeight, int pixelsWidth) {
         this.id = StringUtils.requireNotNullNorEmpty(id, "ID is required.");
         this.url = url;
+        if (bytes <= 0) {
+            throw new IllegalArgumentException("Number of bytes MUST be greater than 0.");
+        }
         this.bytes = UInt32.from(bytes);
         this.type = StringUtils.requireNotNullNorEmpty(type, "Content Type is required.");
         if (pixelsHeight < 0 || pixelsHeight > MAX_HEIGHT) {