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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import copy
from typing import Any, Dict, List, Optional
from synapse.push.rulekinds import PRIORITY_CLASS_INVERSE_MAP, PRIORITY_CLASS_MAP
from synapse.synapse_rust.push import FilteredPushRules, PushRule
from synapse.types import UserID
def format_push_rules_for_user(
user: UserID, ruleslist: FilteredPushRules
) -> Dict[str, Dict[str, List[Dict[str, Any]]]]:
"""Converts a list of rawrules and a enabled map into nested dictionaries
to match the Matrix client-server format for push rules"""
rules: Dict[str, Dict[str, List[Dict[str, Any]]]] = {"global": {}}
rules["global"] = _add_empty_priority_class_arrays(rules["global"])
for r, enabled in ruleslist.rules():
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)
_convert_type_to_value(template_rule, user)
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.
template_rule["conditions"] = copy.deepcopy(template_rule["conditions"])
for c in template_rule["conditions"]:
c.pop("_cache_key", None)
_convert_type_to_value(c, user)
return rules
def _convert_type_to_value(rule_or_cond: Dict[str, Any], user: UserID) -> None:
for type_key in ("pattern", "value"):
type_value = rule_or_cond.pop(f"{type_key}_type", None)
if type_value == "user_id":
rule_or_cond[type_key] = user.to_string()
elif type_value == "user_localpart":
rule_or_cond[type_key] = user.localpart
def _add_empty_priority_class_arrays(d: Dict[str, list]) -> Dict[str, list]:
for pc in PRIORITY_CLASS_MAP.keys():
d[pc] = []
return d
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)
if template_name in ["override", "underride"]:
templaterule = {"conditions": rule.conditions, "actions": rule.actions}
elif template_name in ["sender", "room"]:
templaterule = {"actions": rule.actions}
unscoped_rule_id = rule.conditions[0]["pattern"]
elif template_name == "content":
if len(rule.conditions) != 1:
return None
thecond = rule.conditions[0]
templaterule = {"actions": rule.actions}
if "pattern" in thecond:
templaterule["pattern"] = thecond["pattern"]
elif "pattern_type" in thecond:
templaterule["pattern_type"] = thecond["pattern_type"]
else:
return None
else:
# This should not be reached unless this function is not kept in sync
# with PRIORITY_CLASS_INVERSE_MAP.
raise ValueError("Unexpected template_name: %s" % (template_name,))
templaterule["rule_id"] = unscoped_rule_id
templaterule["default"] = rule.default
return templaterule
def _rule_id_from_namespaced(in_rule_id: str) -> str:
return in_rule_id.split("/")[-1]
def _priority_class_to_template_name(pc: int) -> str:
return PRIORITY_CLASS_INVERSE_MAP[pc]
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