SERVER-8308 limit tojson call depth

1 files changed, 31 insertions, 0 deletions

diff --git a/jstests/noPassthrough/nested_tojson.js b/jstests/noPassthrough/nested_tojson.js
new file mode 100644
index 00000000000..f45d40a2b93
--- /dev/null
+++ b/jstests/noPassthrough/nested_tojson.js
@@ -0,0 +1,31 @@
+(function() {
+    "use strict";
+
+    const tooMuchRecursion = (1 << 16);
+
+    const nestobj = (depth) => {
+        let doc = {};
+        let cur = doc;
+        for (let i = 0; i < depth; i++) {
+            cur[i] = {};
+            cur = cur[i];
+        }
+        cur['a'] = 'foo';
+        return doc
+    };
+
+    const nestarr = (depth) => {
+        let doc = [0];
+        let cur = doc;
+        for (let i = 0; i < depth; i++) {
+            cur[0] = [0];
+            cur = cur[0];
+        }
+        cur[0] = 'foo';
+        return doc;
+    };
+
+    assert.doesNotThrow(
+        tojson, [nestobj(tooMuchRecursion)], 'failed to print deeply nested object');
+    assert.doesNotThrow(tojson, [nestarr(tooMuchRecursion)], 'failed to print deeply nested array');
+})();