diff --git a/synapse/push/push_rule_evaluator.py b/synapse/push/push_rule_evaluator.py
deleted file mode 100644
index f8176c5a42..0000000000
--- a/synapse/push/push_rule_evaluator.py
+++ /dev/null
@@ -1,361 +0,0 @@
-# Copyright 2015, 2016 OpenMarket Ltd
-# Copyright 2017 New Vector Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import logging
-import re
-from typing import (
- Any,
- Dict,
- List,
- Mapping,
- Optional,
- Pattern,
- Sequence,
- Set,
- Tuple,
- Union,
-)
-
-from matrix_common.regex import glob_to_regex, to_word_pattern
-
-from synapse.events import EventBase
-from synapse.types import UserID
-from synapse.util.caches.lrucache import LruCache
-
-logger = logging.getLogger(__name__)
-
-
-GLOB_REGEX = re.compile(r"\\\[(\\\!|)(.*)\\\]")
-IS_GLOB = re.compile(r"[\?\*\[\]]")
-INEQUALITY_EXPR = re.compile("^([=<>]*)([0-9]*)$")
-
-
-def _room_member_count(condition: Mapping[str, Any], room_member_count: int) -> bool:
- return _test_ineq_condition(condition, room_member_count)
-
-
-def _sender_notification_permission(
- condition: Mapping[str, Any],
- sender_power_level: Optional[int],
- power_levels: Dict[str, Union[int, Dict[str, int]]],
-) -> bool:
- if sender_power_level is None:
- return False
-
- notif_level_key = condition.get("key")
- if notif_level_key is None:
- return False
-
- notif_levels = power_levels.get("notifications", {})
- assert isinstance(notif_levels, dict)
- room_notif_level = notif_levels.get(notif_level_key, 50)
-
- return sender_power_level >= room_notif_level
-
-
-def _test_ineq_condition(condition: Mapping[str, Any], number: int) -> bool:
- if "is" not in condition:
- return False
- m = INEQUALITY_EXPR.match(condition["is"])
- if not m:
- return False
- ineq = m.group(1)
- rhs = m.group(2)
- if not rhs.isdigit():
- return False
- rhs_int = int(rhs)
-
- if ineq == "" or ineq == "==":
- return number == rhs_int
- elif ineq == "<":
- return number < rhs_int
- elif ineq == ">":
- return number > rhs_int
- elif ineq == ">=":
- return number >= rhs_int
- elif ineq == "<=":
- return number <= rhs_int
- else:
- return False
-
-
-def tweaks_for_actions(actions: List[Union[str, Dict]]) -> Dict[str, Any]:
- """
- Converts a list of actions into a `tweaks` dict (which can then be passed to
- the push gateway).
-
- This function ignores all actions other than `set_tweak` actions, and treats
- absent `value`s as `True`, which agrees with the only spec-defined treatment
- of absent `value`s (namely, for `highlight` tweaks).
-
- Args:
- actions: list of actions
- e.g. [
- {"set_tweak": "a", "value": "AAA"},
- {"set_tweak": "b", "value": "BBB"},
- {"set_tweak": "highlight"},
- "notify"
- ]
-
- Returns:
- dictionary of tweaks for those actions
- e.g. {"a": "AAA", "b": "BBB", "highlight": True}
- """
- tweaks = {}
- for a in actions:
- if not isinstance(a, dict):
- continue
- if "set_tweak" in a:
- # value is allowed to be absent in which case the value assumed
- # should be True.
- tweaks[a["set_tweak"]] = a.get("value", True)
- return tweaks
-
-
-class PushRuleEvaluatorForEvent:
- def __init__(
- self,
- event: EventBase,
- room_member_count: int,
- sender_power_level: Optional[int],
- power_levels: Dict[str, Union[int, Dict[str, int]]],
- relations: Dict[str, Set[Tuple[str, str]]],
- relations_match_enabled: bool,
- ):
- self._event = event
- self._room_member_count = room_member_count
- self._sender_power_level = sender_power_level
- self._power_levels = power_levels
- self._relations = relations
- self._relations_match_enabled = relations_match_enabled
-
- # Maps strings of e.g. 'content.body' -> event["content"]["body"]
- self._value_cache = _flatten_dict(event)
-
- # Maps cache keys to final values.
- self._condition_cache: Dict[str, bool] = {}
-
- def check_conditions(
- self, conditions: Sequence[Mapping], uid: str, display_name: Optional[str]
- ) -> bool:
- """
- Returns true if a user's conditions/user ID/display name match the event.
-
- Args:
- conditions: The user's conditions to match.
- uid: The user's MXID.
- display_name: The display name.
-
- Returns:
- True if all conditions match the event, False otherwise.
- """
- for cond in conditions:
- _cache_key = cond.get("_cache_key", None)
- if _cache_key:
- res = self._condition_cache.get(_cache_key, None)
- if res is False:
- return False
- elif res is True:
- continue
-
- res = self.matches(cond, uid, display_name)
- if _cache_key:
- self._condition_cache[_cache_key] = bool(res)
-
- if not res:
- return False
-
- return True
-
- def matches(
- self, condition: Mapping[str, Any], user_id: str, display_name: Optional[str]
- ) -> bool:
- """
- Returns true if a user's condition/user ID/display name match the event.
-
- Args:
- condition: The user's condition to match.
- uid: The user's MXID.
- display_name: The display name, or None if there is not one.
-
- Returns:
- True if the condition matches the event, False otherwise.
- """
- if condition["kind"] == "event_match":
- return self._event_match(condition, user_id)
- elif condition["kind"] == "contains_display_name":
- return self._contains_display_name(display_name)
- elif condition["kind"] == "room_member_count":
- return _room_member_count(condition, self._room_member_count)
- elif condition["kind"] == "sender_notification_permission":
- return _sender_notification_permission(
- condition, self._sender_power_level, self._power_levels
- )
- elif (
- condition["kind"] == "org.matrix.msc3772.relation_match"
- and self._relations_match_enabled
- ):
- return self._relation_match(condition, user_id)
- else:
- # XXX This looks incorrect -- we have reached an unknown condition
- # kind and are unconditionally returning that it matches. Note
- # that it seems possible to provide a condition to the /pushrules
- # endpoint with an unknown kind, see _rule_tuple_from_request_object.
- return True
-
- def _event_match(self, condition: Mapping, user_id: str) -> bool:
- """
- Check an "event_match" push rule condition.
-
- Args:
- condition: The "event_match" push rule condition to match.
- user_id: The user's MXID.
-
- Returns:
- True if the condition matches the event, False otherwise.
- """
- pattern = condition.get("pattern", None)
-
- if not pattern:
- pattern_type = condition.get("pattern_type", None)
- if pattern_type == "user_id":
- pattern = user_id
- elif pattern_type == "user_localpart":
- pattern = UserID.from_string(user_id).localpart
-
- if not pattern:
- logger.warning("event_match condition with no pattern")
- return False
-
- # XXX: optimisation: cache our pattern regexps
- if condition["key"] == "content.body":
- body = self._event.content.get("body", None)
- if not body or not isinstance(body, str):
- return False
-
- return _glob_matches(pattern, body, word_boundary=True)
- else:
- haystack = self._value_cache.get(condition["key"], None)
- if haystack is None:
- return False
-
- return _glob_matches(pattern, haystack)
-
- def _contains_display_name(self, display_name: Optional[str]) -> bool:
- """
- Check an "event_match" push rule condition.
-
- Args:
- display_name: The display name, or None if there is not one.
-
- Returns:
- True if the display name is found in the event body, False otherwise.
- """
- if not display_name:
- return False
-
- body = self._event.content.get("body", None)
- if not body or not isinstance(body, str):
- return False
-
- # Similar to _glob_matches, but do not treat display_name as a glob.
- r = regex_cache.get((display_name, False, True), None)
- if not r:
- r1 = re.escape(display_name)
- r1 = to_word_pattern(r1)
- r = re.compile(r1, flags=re.IGNORECASE)
- regex_cache[(display_name, False, True)] = r
-
- return bool(r.search(body))
-
- def _relation_match(self, condition: Mapping, user_id: str) -> bool:
- """
- Check an "relation_match" push rule condition.
-
- Args:
- condition: The "event_match" push rule condition to match.
- user_id: The user's MXID.
-
- Returns:
- True if the condition matches the event, False otherwise.
- """
- rel_type = condition.get("rel_type")
- if not rel_type:
- logger.warning("relation_match condition missing rel_type")
- return False
-
- sender_pattern = condition.get("sender")
- if sender_pattern is None:
- sender_type = condition.get("sender_type")
- if sender_type == "user_id":
- sender_pattern = user_id
- type_pattern = condition.get("type")
-
- # If any other relations matches, return True.
- for sender, event_type in self._relations.get(rel_type, ()):
- if sender_pattern and not _glob_matches(sender_pattern, sender):
- continue
- if type_pattern and not _glob_matches(type_pattern, event_type):
- continue
- # All values must have matched.
- return True
-
- # No relations matched.
- return False
-
-
-# Caches (string, is_glob, word_boundary) -> regex for push. See _glob_matches
-regex_cache: LruCache[Tuple[str, bool, bool], Pattern] = LruCache(
- 50000, "regex_push_cache"
-)
-
-
-def _glob_matches(glob: str, value: str, word_boundary: bool = False) -> bool:
- """Tests if value matches glob.
-
- Args:
- glob
- value: String to test against glob.
- word_boundary: Whether to match against word boundaries or entire
- string. Defaults to False.
- """
-
- try:
- r = regex_cache.get((glob, True, word_boundary), None)
- if not r:
- r = glob_to_regex(glob, word_boundary=word_boundary)
- regex_cache[(glob, True, word_boundary)] = r
- return bool(r.search(value))
- except re.error:
- logger.warning("Failed to parse glob to regex: %r", glob)
- return False
-
-
-def _flatten_dict(
- d: Union[EventBase, Mapping[str, Any]],
- prefix: Optional[List[str]] = None,
- result: Optional[Dict[str, str]] = None,
-) -> Dict[str, str]:
- if prefix is None:
- prefix = []
- if result is None:
- result = {}
- for key, value in d.items():
- if isinstance(value, str):
- result[".".join(prefix + [key])] = value.lower()
- elif isinstance(value, Mapping):
- _flatten_dict(value, prefix=(prefix + [key]), result=result)
-
- return result
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