Bug 55732 - PPT can't open, fails with "Couldn't instantiate .... StyleTextProp9Atom : java.lang.ArrayIndexOutOfBoundsException: 56"

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1569984 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hslf/record/StyleTextProp9Atom.java

@@ -27,8 +27,6 @@ import org.apache.poi.util.LittleEndian;
 
 /**
  * The atom record that specifies additional text formatting.
- *
- * @author Alex Nikiforov [mailto:anikif@gmail.com]
  */
 public final class StyleTextProp9Atom extends RecordAtom {
     private final TextPFException9[] autoNumberSchemes;
@@ -64,11 +62,20 @@ public final class StyleTextProp9Atom extends RecordAtom {
             final TextPFException9 item = new TextPFException9(data, i);
             schemes.add(item);
             i += item.getRecordLength();
-        	//int textCfException9 = LittleEndian.getInt(data, i );
-        	//TODO analyze textCfException when have some test data
+            
+            if (i >= data.length) {
+                break;
+            }
+            int textCfException9 = LittleEndian.getInt(data, i );
             i += 4;
+            //TODO analyze textCfException when have some test data
+            
+            if (i >= data.length) {
+                break;
+            }
             int textSiException = LittleEndian.getInt(data, i );
-        	i +=  + 4;//TextCFException9 + SIException
+            i += 4;//TextCFException9 + SIException
+            
             if (0 != (textSiException & 0x40)) { 
                 i += 2; //skip fBidi 
             }

src/scratchpad/testcases/org/apache/poi/hslf/usermodel/TestBugs.java

@@ -21,6 +21,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 
+import java.io.File;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Date;
@@ -38,6 +39,7 @@ import org.apache.poi.hslf.HSLFTestDataSamples;
 import org.apache.poi.hslf.exceptions.OldPowerPointFormatException;
 import org.apache.poi.hslf.model.Background;
 import org.apache.poi.hslf.model.Fill;
+import org.apache.poi.hslf.model.HeadersFooters;
 import org.apache.poi.hslf.model.MasterSheet;
 import org.apache.poi.hslf.model.Notes;
 import org.apache.poi.hslf.model.Picture;
@@ -484,4 +486,20 @@ public final class TestBugs {
         }
     }
 
+    @Test
+    public void bug55732() throws Exception {
+        File file = _slTests.getFile("bug55732.ppt");
+        
+        HSLFSlideShow ss = new HSLFSlideShow(file.getAbsolutePath());
+        SlideShow _show = new SlideShow(ss);
+        Slide[] _slides = _show.getSlides();
+
+        /* Iterate over slides and extract text */
+        for( Slide slide : _slides ) {
+            HeadersFooters hf = slide.getHeadersFooters();
+            boolean visible = hf.isHeaderVisible(); // exception happens here
+        }
+        assertTrue("No Exceptions while reading headers", true);
+    }
+    
 }