diff --git a/synapse/push/baserules.py b/synapse/push/baserules.py
new file mode 100644
index 0000000000..162d265f66
--- /dev/null
+++ b/synapse/push/baserules.py
@@ -0,0 +1,97 @@
+from synapse.push.rulekinds import PRIORITY_CLASS_MAP, PRIORITY_CLASS_INVERSE_MAP
+
+
+def list_with_base_rules(rawrules, user_name):
+ ruleslist = []
+
+ # shove the server default rules for each kind onto the end of each
+ current_prio_class = PRIORITY_CLASS_INVERSE_MAP.keys()[-1]
+ for r in rawrules:
+ if r['priority_class'] < current_prio_class:
+ while r['priority_class'] < current_prio_class:
+ ruleslist.extend(make_base_rules(
+ user_name,
+ PRIORITY_CLASS_INVERSE_MAP[current_prio_class]
+ ))
+ current_prio_class -= 1
+
+ ruleslist.append(r)
+
+ while current_prio_class > 0:
+ ruleslist.extend(make_base_rules(
+ user_name,
+ PRIORITY_CLASS_INVERSE_MAP[current_prio_class]
+ ))
+ current_prio_class -= 1
+
+ return ruleslist
+
+
+def make_base_rules(user, kind):
+ rules = []
+
+ if kind == 'override':
+ rules = make_base_override_rules()
+ elif kind == 'content':
+ rules = make_base_content_rules(user)
+
+ for r in rules:
+ r['priority_class'] = PRIORITY_CLASS_MAP[kind]
+ r['default'] = True
+
+ return rules
+
+
+def make_base_content_rules(user):
+ return [
+ {
+ 'conditions': [
+ {
+ 'kind': 'event_match',
+ 'key': 'content.body',
+ 'pattern': user.localpart, # Matrix ID match
+ }
+ ],
+ 'actions': [
+ 'notify',
+ {
+ 'set_tweak': 'sound',
+ 'value': 'default',
+ }
+ ]
+ },
+ ]
+
+
+def make_base_override_rules():
+ return [
+ {
+ 'conditions': [
+ {
+ 'kind': 'contains_display_name'
+ }
+ ],
+ 'actions': [
+ 'notify',
+ {
+ 'set_tweak': 'sound',
+ 'value': 'default'
+ }
+ ]
+ },
+ {
+ 'conditions': [
+ {
+ 'kind': 'room_member_count',
+ 'is': '2'
+ }
+ ],
+ 'actions': [
+ 'notify',
+ {
+ 'set_tweak': 'sound',
+ 'value': 'default'
+ }
+ ]
+ }
+ ]
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