PDFBOX-6025: avoid ClassCastException

THausherr · THausherr · commit c1d90d8a6870 · 2025-06-24T13:02:42.000Z
git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1926691 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/PDEmbeddedFilesNameTreeNode.java b/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/PDEmbeddedFilesNameTreeNode.java
@@ -50,6 +50,10 @@ public PDEmbeddedFilesNameTreeNode( COSDictionary dic )
     @Override
     protected PDComplexFileSpecification convertCOSToPD( COSBase base ) throws IOException
     {
+        if (!(base instanceof COSDictionary))
+        {
+            throw new IOException("dictionary expected here, but got " + base);
+        }
         return new PDComplexFileSpecification( (COSDictionary)base );
     }
 

Original file line number	Diff line number	Diff line change
`@@ -50,6 +50,10 @@ public PDEmbeddedFilesNameTreeNode( COSDictionary dic )`
`50`	`50`	`@Override`
`51`	`51`	`protected PDComplexFileSpecification convertCOSToPD( COSBase base ) throws IOException`
`52`	`52`	`{`
	`53`	`+ if (!(base instanceof COSDictionary))`
	`54`	`+ {`
	`55`	`+ throw new IOException("dictionary expected here, but got " + base);`
	`56`	`+ }`
`53`	`57`	`return new PDComplexFileSpecification( (COSDictionary)base );`
`54`	`58`	`}`
`55`	`59`