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-rw-r--r--synapse/push/clientformat.py68
1 files changed, 38 insertions, 30 deletions
diff --git a/synapse/push/clientformat.py b/synapse/push/clientformat.py
index 5117ef6854..73618d9234 100644
--- a/synapse/push/clientformat.py
+++ b/synapse/push/clientformat.py
@@ -18,16 +18,15 @@ from typing import Any, Dict, List, Optional
 from synapse.push.rulekinds import PRIORITY_CLASS_INVERSE_MAP, PRIORITY_CLASS_MAP
 from synapse.types import UserID
 
+from .baserules import FilteredPushRules, PushRule
+
 
 def format_push_rules_for_user(
-    user: UserID, ruleslist: List
+    user: UserID, ruleslist: FilteredPushRules
 ) -> Dict[str, Dict[str, list]]:
     """Converts a list of rawrules and a enabled map into nested dictionaries
     to match the Matrix client-server format for push rules"""
 
-    # We're going to be mutating this a lot, so do a deep copy
-    ruleslist = copy.deepcopy(ruleslist)
-
     rules: Dict[str, Dict[str, List[Dict[str, Any]]]] = {
         "global": {},
         "device": {},
@@ -35,11 +34,30 @@ def format_push_rules_for_user(
 
     rules["global"] = _add_empty_priority_class_arrays(rules["global"])
 
-    for r in ruleslist:
-        template_name = _priority_class_to_template_name(r["priority_class"])
+    for r, enabled in ruleslist:
+        template_name = _priority_class_to_template_name(r.priority_class)
+
+        rulearray = rules["global"][template_name]
+
+        template_rule = _rule_to_template(r)
+        if not template_rule:
+            continue
+
+        rulearray.append(template_rule)
+
+        template_rule["enabled"] = enabled
+
+        if "conditions" not in template_rule:
+            # Not all formatted rules have explicit conditions, e.g. "room"
+            # rules omit them as they can be derived from the kind and rule ID.
+            #
+            # If the formatted rule has no conditions then we can skip the
+            # formatting of conditions.
+            continue
 
         # Remove internal stuff.
-        for c in r["conditions"]:
+        template_rule["conditions"] = copy.deepcopy(template_rule["conditions"])
+        for c in template_rule["conditions"]:
             c.pop("_cache_key", None)
 
             pattern_type = c.pop("pattern_type", None)
@@ -52,16 +70,6 @@ def format_push_rules_for_user(
             if sender_type == "user_id":
                 c["sender"] = user.to_string()
 
-        rulearray = rules["global"][template_name]
-
-        template_rule = _rule_to_template(r)
-        if template_rule:
-            if "enabled" in r:
-                template_rule["enabled"] = r["enabled"]
-            else:
-                template_rule["enabled"] = True
-            rulearray.append(template_rule)
-
     return rules
 
 
@@ -71,24 +79,24 @@ def _add_empty_priority_class_arrays(d: Dict[str, list]) -> Dict[str, list]:
     return d
 
 
-def _rule_to_template(rule: Dict[str, Any]) -> Optional[Dict[str, Any]]:
-    unscoped_rule_id = None
-    if "rule_id" in rule:
-        unscoped_rule_id = _rule_id_from_namespaced(rule["rule_id"])
+def _rule_to_template(rule: PushRule) -> Optional[Dict[str, Any]]:
+    templaterule: Dict[str, Any]
+
+    unscoped_rule_id = _rule_id_from_namespaced(rule.rule_id)
 
-    template_name = _priority_class_to_template_name(rule["priority_class"])
+    template_name = _priority_class_to_template_name(rule.priority_class)
     if template_name in ["override", "underride"]:
-        templaterule = {k: rule[k] for k in ["conditions", "actions"]}
+        templaterule = {"conditions": rule.conditions, "actions": rule.actions}
     elif template_name in ["sender", "room"]:
-        templaterule = {"actions": rule["actions"]}
-        unscoped_rule_id = rule["conditions"][0]["pattern"]
+        templaterule = {"actions": rule.actions}
+        unscoped_rule_id = rule.conditions[0]["pattern"]
     elif template_name == "content":
-        if len(rule["conditions"]) != 1:
+        if len(rule.conditions) != 1:
             return None
-        thecond = rule["conditions"][0]
+        thecond = rule.conditions[0]
         if "pattern" not in thecond:
             return None
-        templaterule = {"actions": rule["actions"]}
+        templaterule = {"actions": rule.actions}
         templaterule["pattern"] = thecond["pattern"]
     else:
         # This should not be reached unless this function is not kept in sync
@@ -97,8 +105,8 @@ def _rule_to_template(rule: Dict[str, Any]) -> Optional[Dict[str, Any]]:
 
     if unscoped_rule_id:
         templaterule["rule_id"] = unscoped_rule_id
-    if "default" in rule:
-        templaterule["default"] = rule["default"]
+    if rule.default:
+        templaterule["default"] = True
     return templaterule