PDFBOX-6134: catch bad date + add test

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1930871 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

xmpbox/src/main/java/org/apache/xmpbox/DateConverter.java

@@ -106,6 +106,11 @@ public static Calendar toCalendar(String date) throws IOException
                 {
                     date = date.substring(2);
                 }
+                int posOfT = date.indexOf('T');
+                if (posOfT != 10 && posOfT != -1)
+                {
+                    throw new IOException("Error converting date:" + date);
+                }
 
                 date = date.replaceAll("[-:T]", "");
 

xmpbox/src/test/java/org/apache/xmpbox/DateConverterTest.java

@@ -116,6 +116,7 @@ void testDateConversion() throws IOException
         assertThrows(IOException.class, () -> DateConverter.toCalendar("2008-12-02T21:04:0Z"));
         assertThrows(IOException.class, () -> DateConverter.toCalendar("0-01-01T00:00:00Z"));
         assertThrows(IOException.class, () -> DateConverter.toCalendar("2009-03-16T01:15:19-0-4:00"));
+        assertThrows(IOException.class, () -> DateConverter.toCalendar("0-00-00T00:00:00-04:00"));
 
         // Test missing seconds
         assertEquals(DateConverter.toCalendar("2015-12-08T12:07:00-05:00"),