[#3079] Fix config parsing for json objects

* If a curly brace was used in a string then find_json_ojects would
   fail to find objects correctly. To fix this ignore double-quoted entries.

deluge/config.py

@@ -91,8 +91,13 @@ def find_json_objects(s):
     if start < 0:
         return []
 
+    quoted = False
     for index, c in enumerate(s[offset:]):
-        if c == '{':
+        if c == '"':
+            quoted = not quoted
+        elif quoted:
+            continue
+        elif c == '{':
             opens += 1
         elif c == '}':
             opens -= 1

deluge/tests/test_config.py

@@ -168,3 +168,20 @@ class ConfigTestCase(unittest.TestCase):
 
         objects = find_json_objects(s)
         self.assertEqual(len(objects), 2)
+
+    def test_find_json_objects_curly_brace(self):
+        """Test with string containing curly brace"""
+        s = """{
+  "file": 1,
+  "format": 1
+}{
+  "ssl": true,
+  "enabled": false,
+  "port": 8115
+  "password": "abc{def"
+}\n"""
+
+        from deluge.config import find_json_objects
+
+        objects = find_json_objects(s)
+        self.assertEqual(len(objects), 2)