Bug 41246 - AIOOBE with missing notes entries

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1553760 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hslf/HSLFSlideShow.java

@@ -274,11 +274,11 @@ public final class HSLFSlideShow extends POIDocument {
         HashMap<Integer,Integer> offset2id = new HashMap<Integer,Integer>();
         while (usrOffset != 0){
             UserEditAtom usr = (UserEditAtom) Record.buildRecordAtOffset(docstream, usrOffset);
-            lst.add(Integer.valueOf(usrOffset));
+            lst.add(usrOffset);
             int psrOffset = usr.getPersistPointersOffset();
 
             PersistPtrHolder ptr = (PersistPtrHolder)Record.buildRecordAtOffset(docstream, psrOffset);
-            lst.add(Integer.valueOf(psrOffset));
+            lst.add(psrOffset);
             Hashtable<Integer,Integer> entries = ptr.getSlideLocationsLookup();
             for(Integer id : entries.keySet()) {
                 Integer offset = entries.get(id);

src/scratchpad/src/org/apache/poi/hslf/usermodel/SlideShow.java

@@ -203,20 +203,24 @@ public final class SlideShow {
 			_sheetIdToCoreRecordsLookup.put(allIDs[i], i);
 		}
 
+		Map<Integer,Integer> mostRecentByBytesRev = new HashMap<Integer,Integer>(mostRecentByBytes.size());
+		for (Map.Entry<Integer,Integer> me : mostRecentByBytes.entrySet()) {
+		    mostRecentByBytesRev.put(me.getValue(), me.getKey());
+		}
+		
 		// Now convert the byte offsets back into record offsets
 		for (Record record : _hslfSlideShow.getRecords()) {
-			if (record instanceof PositionDependentRecord) {
+			if (!(record instanceof PositionDependentRecord)) continue;
+			
 			PositionDependentRecord pdr = (PositionDependentRecord) record;
 			int recordAt = pdr.getLastOnDiskOffset();
 
-				// Is it one we care about?
-				for (Integer thisID : allIDs) {
-					int thatRecordAt = mostRecentByBytes.get(thisID);
+			Integer thisID = mostRecentByBytesRev.get(recordAt);
+			
+			if (thisID == null) continue;
 			
-					if (thatRecordAt == recordAt) {
 			// Bingo. Now, where do we store it?
-						Integer storeAtI = _sheetIdToCoreRecordsLookup.get(thisID);
-						int storeAt = storeAtI.intValue();
+			int storeAt = _sheetIdToCoreRecordsLookup.get(thisID);
 
 			// Tell it its Sheet ID, if it cares
 			if (pdr instanceof PositionDependentRecordContainer) {
@@ -227,9 +231,6 @@ public final class SlideShow {
 			// Finally, save the record
 			_mostRecentCoreRecords[storeAt] = record;
 		}
-				}
-			}
-		}
 
 		// Now look for the interesting records in there
 		for (Record record : _mostRecentCoreRecords) {
@@ -265,9 +266,9 @@ public final class SlideShow {
 	 *            the refID
 	 */
 	private Record getCoreRecordForRefID(int refID) {
-		Integer coreRecordId = _sheetIdToCoreRecordsLookup.get(Integer.valueOf(refID));
+		Integer coreRecordId = _sheetIdToCoreRecordsLookup.get(refID);
 		if (coreRecordId != null) {
-			Record r = _mostRecentCoreRecords[coreRecordId.intValue()];
+			Record r = _mostRecentCoreRecords[coreRecordId];
 			return r;
 		}
 		logger.log(POILogger.ERROR,
@@ -361,7 +362,15 @@ public final class SlideShow {
 				Record r = getCoreRecordForSAS(notesSets[i]);
 
 				// Ensure it really is a notes record
-				if (r instanceof org.apache.poi.hslf.record.Notes) {
+				if (r == null || r instanceof org.apache.poi.hslf.record.Notes) {
+				    if (r == null) {
+	                    logger.log(POILogger.WARN, "A Notes SlideAtomSet at " + i
+	                            + " said its record was at refID "
+	                            + notesSets[i].getSlidePersistAtom().getRefID()
+	                            + ", but that record didn't exist - record ignored.");
+				    }
+				    // we need to add also null-records, otherwise the index references to other existing
+				    // don't work anymore
 					org.apache.poi.hslf.record.Notes notesRecord = (org.apache.poi.hslf.record.Notes) r;
 					notesRecordsL.add(notesRecord);
 
@@ -410,9 +419,11 @@ public final class SlideShow {
 		// Notes first
 		_notes = new Notes[notesRecords.length];
 		for (int i = 0; i < _notes.length; i++) {
+		    if (notesRecords[i] != null) {
     		    _notes[i] = new Notes(notesRecords[i]);
     			_notes[i].setSlideShow(this);
 		    }
+		}
 		// Then slides
 		_slides = new Slide[slidesRecords.length];
 		for (int i = 0; i < _slides.length; i++) {
@@ -425,12 +436,13 @@ public final class SlideShow {
 			// 0 if slide has no notes.
 			int noteId = slidesRecords[i].getSlideAtom().getNotesID();
 			if (noteId != 0) {
-				Integer notesPos = (Integer) slideIdToNotes.get(Integer.valueOf(noteId));
-				if (notesPos != null)
-					notes = _notes[notesPos.intValue()];
-				else
+				Integer notesPos = slideIdToNotes.get(noteId);
+				if (notesPos != null) {
+					notes = _notes[notesPos];
+				} else {
 					logger.log(POILogger.ERROR, "Notes not found for noteId=" + noteId);
 				}
+			}
 
 			// Now, build our slide
 			_slides[i] = new Slide(slidesRecords[i], notes, sas, slideIdentifier, (i + 1));

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

@@ -17,6 +17,7 @@
 
 package org.apache.poi.hslf.usermodel;
 
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -27,7 +28,9 @@ import java.util.Set;
 import junit.framework.AssertionFailedError;
 import junit.framework.TestCase;
 
+import org.apache.poi.POIDataSamples;
 import org.apache.poi.hslf.HSLFSlideShow;
+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;
@@ -42,7 +45,6 @@ import org.apache.poi.hslf.model.TextBox;
 import org.apache.poi.hslf.model.TextRun;
 import org.apache.poi.hslf.model.TextShape;
 import org.apache.poi.hslf.model.TitleMaster;
-import org.apache.poi.POIDataSamples;
 
 /**
  * Testcases for bugs entered in bugzilla
@@ -406,4 +408,31 @@ public final class TestBugs extends TestCase {
           }
        }
     }
+
+    /**
+     * Bug 41246: AIOOB with illegal note references
+     */
+    public void test41246a() throws Exception {
+        InputStream fis = _slTests.openResourceAsStream("41246-1.ppt");
+        HSLFSlideShow hslf = new HSLFSlideShow(fis);
+        fis.close();
+
+        SlideShow ppt = new SlideShow(hslf);
+        assertTrue("No Exceptions while reading file", true);
+
+        ppt = HSLFTestDataSamples.writeOutAndReadBack(ppt);
+        assertTrue("No Exceptions while rewriting file", true);
+    }
+
+    public void test41246b() throws Exception {
+        InputStream fis = _slTests.openResourceAsStream("41246-2.ppt");
+        HSLFSlideShow hslf = new HSLFSlideShow(fis);
+        fis.close();
+
+        SlideShow ppt = new SlideShow(hslf);
+        assertTrue("No Exceptions while reading file", true);
+
+        ppt = HSLFTestDataSamples.writeOutAndReadBack(ppt);
+        assertTrue("No Exceptions while rewriting file", true);
+    }
 }