Check stream length

J-F-Liu · Nov 30, 2021 · 25ccd7f · 25ccd7f
1 parent 53090ad
commit 25ccd7f
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/src/document.rs b/src/document.rs
@@ -263,7 +263,7 @@ impl Document {
             {
                 collect_resources(page_tree, resource_ids, doc);
             }
-        };
+        }
 
         let mut resource_dict = None;
         let mut resource_ids = Vec::new();
@@ -291,7 +291,7 @@ impl Document {
                     }
                 }
             }
-        };
+        }
 
         let mut fonts = BTreeMap::new();
         let (resource_dict, resource_ids) = self.get_page_resources(page_id);

diff --git a/src/parser.rs b/src/parser.rs
@@ -134,6 +134,7 @@ fn stream<'a>(reader: &'a Reader) -> Parser<'a, u8, Stream> {
                 }
                 value.as_i64()
             }) {
+                assert!(length >= 0, "invalid negative stream length");
                 let stream = take(length as usize) - eol().opt() - seq(b"endstream").expect("endstream");
                 stream.map(move |data| Stream::new(dict.clone(), data.to_vec()))
             } else {