svn commit: r1927175 - in /pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading: PDShadingType4.java PDTriangleBasedShadingType.java

[tilman]

Author: tilman
Date: Sun Jul 13 08:00:19 2025
New Revision: 1927175

URL: http://svn.apache.org/viewvc?rev=1927175&view=rev
Log:
PDFBOX-6035: prevent infinite loop

Modified:
    
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDShadingType4.java
    
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDTriangleBasedShadingType.java

Modified: 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDShadingType4.java
URL: 
http://svn.apache.org/viewvc/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDShadingType4.java?rev=1927175&r1=1927174&r2=1927175&view=diff
==============================================================================
--- 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDShadingType4.java
 (original)
+++ 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDShadingType4.java
 Sun Jul 13 08:00:19 2025
@@ -192,7 +192,8 @@ public class PDShadingType4 extends PDTr
                             }
                             break;
                         default:
-                            LOG.warn("bad flag: {}", flag);
+                            LOG.warn("bad flag {}, aborting", flag);
+                            eof = true;
                             break;
                         }
                     }

Modified: 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDTriangleBasedShadingType.java
URL: 
http://svn.apache.org/viewvc/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDTriangleBasedShadingType.java?rev=1927175&r1=1927174&r2=1927175&view=diff
==============================================================================
--- 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDTriangleBasedShadingType.java
 (original)
+++ 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDTriangleBasedShadingType.java
 Sun Jul 13 08:00:19 2025
@@ -197,6 +197,10 @@ abstract class PDTriangleBasedShadingTyp
                                 PDRange rangeX, PDRange rangeY, PDRange[] 
colRangeTab,
                                 Matrix matrix, AffineTransform xform) throws 
IOException
     {
+        if (bitsPerCoordinate <= 0 || numberOfColorComponents <= 0 || 
bitsPerColorComponent <= 0)
+        {
+            throw new IOException("nothing to read, check bitsPerCoordinate, 
numberOfColorComponents and bitsPerColorComponent");
+        }
         float[] colorComponentTab = new float[numberOfColorComponents];
         long x = input.readBits(bitsPerCoordinate);
         long y = input.readBits(bitsPerCoordinate);