Merge pull request #4074 from melissalinkert/gh-4034

Gel: check IFD count in isThisType
ome · Sep 29, 2023 · 345a958 · 345a958
2 parents c61e4ab + daa7c9c
commit 345a958
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/components/formats-gpl/src/loci/formats/in/GelReader.java b/components/formats-gpl/src/loci/formats/in/GelReader.java
@@ -90,7 +90,11 @@ public GelReader() {
   public boolean isThisType(RandomAccessInputStream stream) throws IOException {
     TiffParser parser = new TiffParser(stream);
     parser.setDoCaching(false);
-    IFD ifd = parser.getFirstIFD();
+    long[] offsets = parser.getIFDOffsets();
+    if (offsets.length == 0 || offsets.length > 2) {
+      return false;
+    }
+    IFD ifd = parser.getIFD(offsets[0]);
     if (ifd == null) return false;
     return ifd.containsKey(MD_FILETAG);
   }