File r1576-Do-not-get-stuck-in-infite-loop-with-broken-page-tables.patch of Package podofo.34526

------------------------------------------------------------------------
r1576 | domseichter | 2013-10-27 09:48:44 +0100 (dom, 27 oct 2013) | 1 line

FIXED: Patch by Petr Pytelka to not get stuck in infite loop with broken page tables

Index: src/doc/PdfPagesTree.cpp
===================================================================
--- src/doc/PdfPagesTree.cpp	(revision 1575)
+++ src/doc/PdfPagesTree.cpp	(revision 1576)
#@@ -28,7 +28,8 @@
#  *   version of the file(s), but you are not obligated to do so.  If you   *
#  *   do not wish to do so, delete this exception statement from your       *
#  *   version.  If you delete this exception statement from all source      *
#- *   files in the program, then also delete it here.                       ****************************************************************************/
#+ *   files in the program, then also delete it here.                       *
#+ ***************************************************************************/
# 
# #include "PdfPagesTree.h"
# 
@@ -424,6 +425,9 @@
         }
 
         PdfObject* pgObject = GetRoot()->GetOwner()->GetObject( rVar.GetReference() );
+		if(pgObject==NULL) {
+			PODOFO_RAISE_ERROR_INFO( ePdfError_PageNotFound, "Invalid reference." );
+		}
         //printf("Reading %s\n", pgObject->Reference().ToString().c_str());
         // make sure the object is a /Page and not a /Pages with a single kid
         if( this->IsTypePage(pgObject) ) 
@@ -439,7 +443,10 @@
 
             rLstParents.push_back( pgObject );
             rVar = *(pgObject->GetDictionary().GetKey( "Kids" ));
-        }
+        } else {
+	  // Reference to unexpected object
+	  PODOFO_RAISE_ERROR_INFO( ePdfError_PageNotFound, "Reference to unexpected object." );
+	}
     }
 
     return NULL;

------------------------------------------------------------------------