463 lines
14 KiB
Python
463 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from twisted.internet import defer
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from synapse.api.errors import (
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SynapseError, Codes, UnrecognizedRequestError, NotFoundError, StoreError
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)
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from .base import ClientV1RestServlet, client_path_pattern
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from synapse.storage.push_rule import (
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InconsistentRuleException, RuleNotFoundException
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)
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import synapse.push.baserules as baserules
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from synapse.push.rulekinds import (
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PRIORITY_CLASS_MAP, PRIORITY_CLASS_INVERSE_MAP
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)
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import simplejson as json
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class PushRuleRestServlet(ClientV1RestServlet):
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PATTERN = client_path_pattern("/pushrules/.*$")
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SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR = (
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"Unrecognised request: You probably wanted a trailing slash")
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@defer.inlineCallbacks
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def on_PUT(self, request):
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spec = _rule_spec_from_path(request.postpath)
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try:
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priority_class = _priority_class_from_spec(spec)
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except InvalidRuleException as e:
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raise SynapseError(400, e.message)
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user, _ = yield self.auth.get_user_by_req(request)
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if '/' in spec['rule_id'] or '\\' in spec['rule_id']:
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raise SynapseError(400, "rule_id may not contain slashes")
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content = _parse_json(request)
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if 'attr' in spec:
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self.set_rule_attr(user.to_string(), spec, content)
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defer.returnValue((200, {}))
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try:
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(conditions, actions) = _rule_tuple_from_request_object(
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spec['template'],
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spec['rule_id'],
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content,
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device=spec['device'] if 'device' in spec else None
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)
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except InvalidRuleException as e:
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raise SynapseError(400, e.message)
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before = request.args.get("before", None)
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if before and len(before):
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before = before[0]
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after = request.args.get("after", None)
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if after and len(after):
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after = after[0]
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try:
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yield self.hs.get_datastore().add_push_rule(
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user_name=user.to_string(),
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rule_id=_namespaced_rule_id_from_spec(spec),
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priority_class=priority_class,
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conditions=conditions,
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actions=actions,
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before=before,
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after=after
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)
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except InconsistentRuleException as e:
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raise SynapseError(400, e.message)
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except RuleNotFoundException as e:
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raise SynapseError(400, e.message)
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defer.returnValue((200, {}))
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@defer.inlineCallbacks
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def on_DELETE(self, request):
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spec = _rule_spec_from_path(request.postpath)
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user, _ = yield self.auth.get_user_by_req(request)
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namespaced_rule_id = _namespaced_rule_id_from_spec(spec)
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try:
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yield self.hs.get_datastore().delete_push_rule(
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user.to_string(), namespaced_rule_id
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)
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defer.returnValue((200, {}))
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except StoreError as e:
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if e.code == 404:
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raise NotFoundError()
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else:
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raise
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@defer.inlineCallbacks
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def on_GET(self, request):
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user, _ = yield self.auth.get_user_by_req(request)
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# we build up the full structure and then decide which bits of it
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# to send which means doing unnecessary work sometimes but is
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# is probably not going to make a whole lot of difference
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rawrules = yield self.hs.get_datastore().get_push_rules_for_user(
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user.to_string()
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)
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ruleslist = []
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for rawrule in rawrules:
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rule = dict(rawrule)
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rule["conditions"] = json.loads(rawrule["conditions"])
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rule["actions"] = json.loads(rawrule["actions"])
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ruleslist.append(rule)
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ruleslist = baserules.list_with_base_rules(ruleslist, user)
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rules = {'global': {}, 'device': {}}
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rules['global'] = _add_empty_priority_class_arrays(rules['global'])
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enabled_map = yield self.hs.get_datastore().\
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get_push_rules_enabled_for_user(user.to_string())
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for r in ruleslist:
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rulearray = None
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template_name = _priority_class_to_template_name(r['priority_class'])
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if r['priority_class'] > PRIORITY_CLASS_MAP['override']:
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# per-device rule
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profile_tag = _profile_tag_from_conditions(r["conditions"])
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r = _strip_device_condition(r)
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if not profile_tag:
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continue
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if profile_tag not in rules['device']:
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rules['device'][profile_tag] = {}
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rules['device'][profile_tag] = (
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_add_empty_priority_class_arrays(
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rules['device'][profile_tag]
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)
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)
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rulearray = rules['device'][profile_tag][template_name]
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else:
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rulearray = rules['global'][template_name]
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template_rule = _rule_to_template(r)
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if template_rule:
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if r['rule_id'] in enabled_map:
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template_rule['enabled'] = enabled_map[r['rule_id']]
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elif 'enabled' in r:
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template_rule['enabled'] = r['enabled']
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else:
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template_rule['enabled'] = True
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rulearray.append(template_rule)
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path = request.postpath[1:]
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if path == []:
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# we're a reference impl: pedantry is our job.
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raise UnrecognizedRequestError(
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PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR
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)
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if path[0] == '':
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defer.returnValue((200, rules))
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elif path[0] == 'global':
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path = path[1:]
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result = _filter_ruleset_with_path(rules['global'], path)
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defer.returnValue((200, result))
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elif path[0] == 'device':
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path = path[1:]
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if path == []:
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raise UnrecognizedRequestError(
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PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR
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)
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if path[0] == '':
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defer.returnValue((200, rules['device']))
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profile_tag = path[0]
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path = path[1:]
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if profile_tag not in rules['device']:
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ret = {}
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ret = _add_empty_priority_class_arrays(ret)
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defer.returnValue((200, ret))
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ruleset = rules['device'][profile_tag]
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result = _filter_ruleset_with_path(ruleset, path)
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defer.returnValue((200, result))
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else:
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raise UnrecognizedRequestError()
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def on_OPTIONS(self, _):
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return 200, {}
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def set_rule_attr(self, user_name, spec, val):
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if spec['attr'] == 'enabled':
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if not isinstance(val, bool):
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raise SynapseError(400, "Value for 'enabled' must be boolean")
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namespaced_rule_id = _namespaced_rule_id_from_spec(spec)
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self.hs.get_datastore().set_push_rule_enabled(
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user_name, namespaced_rule_id, val
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)
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else:
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raise UnrecognizedRequestError()
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def get_rule_attr(self, user_name, namespaced_rule_id, attr):
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if attr == 'enabled':
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return self.hs.get_datastore().get_push_rule_enabled_by_user_rule_id(
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user_name, namespaced_rule_id
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)
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else:
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raise UnrecognizedRequestError()
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def _rule_spec_from_path(path):
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if len(path) < 2:
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raise UnrecognizedRequestError()
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if path[0] != 'pushrules':
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raise UnrecognizedRequestError()
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scope = path[1]
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path = path[2:]
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if scope not in ['global', 'device']:
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raise UnrecognizedRequestError()
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device = None
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if scope == 'device':
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if len(path) == 0:
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raise UnrecognizedRequestError()
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device = path[0]
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path = path[1:]
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if len(path) == 0:
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raise UnrecognizedRequestError()
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template = path[0]
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path = path[1:]
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if len(path) == 0 or len(path[0]) == 0:
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raise UnrecognizedRequestError()
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rule_id = path[0]
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spec = {
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'scope': scope,
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'template': template,
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'rule_id': rule_id
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}
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if device:
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spec['profile_tag'] = device
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path = path[1:]
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if len(path) > 0 and len(path[0]) > 0:
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spec['attr'] = path[0]
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return spec
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def _rule_tuple_from_request_object(rule_template, rule_id, req_obj, device=None):
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if rule_template in ['override', 'underride']:
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if 'conditions' not in req_obj:
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raise InvalidRuleException("Missing 'conditions'")
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conditions = req_obj['conditions']
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for c in conditions:
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if 'kind' not in c:
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raise InvalidRuleException("Condition without 'kind'")
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elif rule_template == 'room':
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conditions = [{
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'kind': 'event_match',
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'key': 'room_id',
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'pattern': rule_id
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}]
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elif rule_template == 'sender':
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conditions = [{
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'kind': 'event_match',
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'key': 'user_id',
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'pattern': rule_id
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}]
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elif rule_template == 'content':
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if 'pattern' not in req_obj:
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raise InvalidRuleException("Content rule missing 'pattern'")
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pat = req_obj['pattern']
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conditions = [{
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'kind': 'event_match',
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'key': 'content.body',
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'pattern': pat
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}]
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else:
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raise InvalidRuleException("Unknown rule template: %s" % (rule_template,))
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if device:
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conditions.append({
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'kind': 'device',
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'profile_tag': device
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})
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if 'actions' not in req_obj:
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raise InvalidRuleException("No actions found")
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actions = req_obj['actions']
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for a in actions:
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if a in ['notify', 'dont_notify', 'coalesce']:
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pass
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elif isinstance(a, dict) and 'set_tweak' in a:
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pass
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else:
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raise InvalidRuleException("Unrecognised action")
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return conditions, actions
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def _add_empty_priority_class_arrays(d):
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for pc in PRIORITY_CLASS_MAP.keys():
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d[pc] = []
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return d
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def _profile_tag_from_conditions(conditions):
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"""
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Given a list of conditions, return the profile tag of the
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device rule if there is one
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"""
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for c in conditions:
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if c['kind'] == 'device':
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return c['profile_tag']
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return None
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def _filter_ruleset_with_path(ruleset, path):
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if path == []:
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raise UnrecognizedRequestError(
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PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR
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)
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if path[0] == '':
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return ruleset
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template_kind = path[0]
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if template_kind not in ruleset:
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raise UnrecognizedRequestError()
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path = path[1:]
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if path == []:
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raise UnrecognizedRequestError(
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PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR
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)
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if path[0] == '':
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return ruleset[template_kind]
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rule_id = path[0]
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the_rule = None
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for r in ruleset[template_kind]:
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if r['rule_id'] == rule_id:
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the_rule = r
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if the_rule is None:
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raise NotFoundError
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path = path[1:]
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if len(path) == 0:
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return the_rule
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attr = path[0]
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if attr in the_rule:
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return the_rule[attr]
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else:
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raise UnrecognizedRequestError()
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def _priority_class_from_spec(spec):
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if spec['template'] not in PRIORITY_CLASS_MAP.keys():
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raise InvalidRuleException("Unknown template: %s" % (spec['kind']))
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pc = PRIORITY_CLASS_MAP[spec['template']]
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if spec['scope'] == 'device':
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pc += len(PRIORITY_CLASS_MAP)
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return pc
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def _priority_class_to_template_name(pc):
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if pc > PRIORITY_CLASS_MAP['override']:
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# per-device
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prio_class_index = pc - len(PRIORITY_CLASS_MAP)
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return PRIORITY_CLASS_INVERSE_MAP[prio_class_index]
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else:
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return PRIORITY_CLASS_INVERSE_MAP[pc]
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def _rule_to_template(rule):
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unscoped_rule_id = None
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if 'rule_id' in rule:
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unscoped_rule_id = _rule_id_from_namespaced(rule['rule_id'])
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template_name = _priority_class_to_template_name(rule['priority_class'])
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if template_name in ['override', 'underride']:
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templaterule = {k: rule[k] for k in ["conditions", "actions"]}
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elif template_name in ["sender", "room"]:
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templaterule = {'actions': rule['actions']}
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unscoped_rule_id = rule['conditions'][0]['pattern']
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elif template_name == 'content':
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if len(rule["conditions"]) != 1:
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return None
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thecond = rule["conditions"][0]
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if "pattern" not in thecond:
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return None
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templaterule = {'actions': rule['actions']}
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templaterule["pattern"] = thecond["pattern"]
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if unscoped_rule_id:
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templaterule['rule_id'] = unscoped_rule_id
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if 'default' in rule:
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templaterule['default'] = rule['default']
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return templaterule
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def _strip_device_condition(rule):
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for i, c in enumerate(rule['conditions']):
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if c['kind'] == 'device':
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del rule['conditions'][i]
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return rule
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def _namespaced_rule_id_from_spec(spec):
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if spec['scope'] == 'global':
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scope = 'global'
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else:
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scope = 'device/%s' % (spec['profile_tag'])
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return "%s/%s/%s" % (scope, spec['template'], spec['rule_id'])
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def _rule_id_from_namespaced(in_rule_id):
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return in_rule_id.split('/')[-1]
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class InvalidRuleException(Exception):
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pass
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# XXX: C+ped from rest/room.py - surely this should be common?
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def _parse_json(request):
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try:
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content = json.loads(request.content.read())
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return content
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except ValueError:
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raise SynapseError(400, "Content not JSON.", errcode=Codes.NOT_JSON)
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def register_servlets(hs, http_server):
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PushRuleRestServlet(hs).register(http_server)
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