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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket 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.
from twisted.internet import defer
from synapse.api.errors import SynapseError, Codes, UnrecognizedRequestError
from base import RestServlet, client_path_pattern
from synapse.storage.push_rule import InconsistentRuleException, RuleNotFoundException
import json
class PushRuleRestServlet(RestServlet):
PATTERN = client_path_pattern("/pushrules/.*$")
def rule_spec_from_path(self, path):
if len(path) < 2:
raise UnrecognizedRequestError()
if path[0] != 'pushrules':
raise UnrecognizedRequestError()
scope = path[1]
path = path[2:]
if scope not in ['global', 'device']:
raise UnrecognizedRequestError()
device = None
if scope == 'device':
if len(path) == 0:
raise UnrecognizedRequestError()
device = path[0]
path = path[1:]
if len(path) == 0:
raise UnrecognizedRequestError()
template = path[0]
path = path[1:]
if len(path) == 0:
raise UnrecognizedRequestError()
rule_id = path[0]
spec = {
'scope' : scope,
'template': template,
'rule_id': rule_id
}
if device:
spec['device'] = device
return spec
def rule_tuple_from_request_object(self, rule_template, rule_id, req_obj):
if rule_template in ['override', 'underride']:
if 'conditions' not in req_obj:
raise InvalidRuleException("Missing 'conditions'")
conditions = req_obj['conditions']
for c in conditions:
if 'kind' not in c:
raise InvalidRuleException("Condition without 'kind'")
elif rule_template == 'room':
conditions = [{
'kind': 'event_match',
'key': 'room_id',
'pattern': rule_id
}]
elif rule_template == 'sender':
conditions = [{
'kind': 'event_match',
'key': 'user_id',
'pattern': rule_id
}]
elif rule_template == 'content':
if 'pattern' not in req_obj:
raise InvalidRuleException("Content rule missing 'pattern'")
conditions = [{
'kind': 'event_match',
'key': 'content.body',
'pattern': req_obj['pattern']
}]
else:
raise InvalidRuleException("Unknown rule template: %s" % (rule_template))
if 'actions' not in req_obj:
raise InvalidRuleException("No actions found")
actions = req_obj['actions']
for a in actions:
if a in ['notify', 'dont-notify', 'coalesce']:
pass
elif isinstance(a, dict) and 'set_sound' in a:
pass
else:
raise InvalidRuleException("Unrecognised action")
return (conditions, actions)
def priority_class_from_spec(self, spec):
map = {
'underride': 0,
'sender': 1,
'room': 2,
'content': 3,
'override': 4
}
if spec['template'] not in map.keys():
raise InvalidRuleException("Unknown template: %s" % (spec['kind']))
pc = map[spec['template']]
if spec['scope'] == 'device':
pc += 5
return pc
@defer.inlineCallbacks
def on_PUT(self, request):
spec = self.rule_spec_from_path(request.postpath)
try:
priority_class = self.priority_class_from_spec(spec)
except InvalidRuleException as e:
raise SynapseError(400, e.message)
user = yield self.auth.get_user_by_req(request)
content = _parse_json(request)
try:
(conditions, actions) = self.rule_tuple_from_request_object(
spec['template'],
spec['rule_id'],
content
)
except InvalidRuleException as e:
raise SynapseError(400, e.message)
before = request.args.get("before", None)
if before and len(before):
before = before[0]
after = request.args.get("after", None)
if after and len(after):
after = after[0]
try:
yield self.hs.get_datastore().add_push_rule(
user_name=user.to_string(),
rule_id=spec['rule_id'],
priority_class=priority_class,
conditions=conditions,
actions=actions,
before=before,
after=after
)
except InconsistentRuleException as e:
raise SynapseError(400, e.message)
except RuleNotFoundException:
raise SynapseError(400, "before/after rule not found")
defer.returnValue((200, {}))
def on_OPTIONS(self, _):
return 200, {}
class InvalidRuleException(Exception):
pass
# XXX: C+ped from rest/room.py - surely this should be common?
def _parse_json(request):
try:
content = json.loads(request.content.read())
if type(content) != dict:
raise SynapseError(400, "Content must be a JSON object.",
errcode=Codes.NOT_JSON)
return content
except ValueError:
raise SynapseError(400, "Content not JSON.", errcode=Codes.NOT_JSON)
def register_servlets(hs, http_server):
PushRuleRestServlet(hs).register(http_server)
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