Use getElementsByTagName for safer image parsing

1 files changed, 14 insertions, 1 deletions

diff --git a/lib/xmlreader.js b/lib/xmlreader.js
index 08347c4..3b14a93 100644
--- a/lib/xmlreader.js
+++ b/lib/xmlreader.js
@@ -99,7 +99,20 @@ Element.prototype.first = function(name) {
 }
 
 Element.prototype.getElementsByTagName = function(name) {
-    return _.filter(this.children, function(child) {
+    var elements = _.filter(this.children, function(child) {
         return child.name == name;
     });
+    return toElementList(elements);
 };
+
+var elementListPrototype = {
+    getElementsByTagName: function(name) {
+        return toElementList(_.flatten(this.map(function(element) {
+            return element.getElementsByTagName(name);
+        }, true)));
+    }
+};
+
+function toElementList(array) {
+    return _.extend(array, elementListPrototype);
+}