diff options
Diffstat (limited to 'synapse/rest/client/v1/push_rule.py')
| -rw-r--r-- | synapse/rest/client/v1/push_rule.py | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/synapse/rest/client/v1/push_rule.py b/synapse/rest/client/v1/push_rule.py new file mode 100644 index 0000000000..2b33bdac08 --- /dev/null +++ b/synapse/rest/client/v1/push_rule.py @@ -0,0 +1,386 @@ +# -*- 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, NotFoundError, \ + StoreError +from .base import ClientV1RestServlet, client_path_pattern +from synapse.storage.push_rule import InconsistentRuleException, RuleNotFoundException + +import json + + +class PushRuleRestServlet(ClientV1RestServlet): + PATTERN = client_path_pattern("/pushrules/.*$") + PRIORITY_CLASS_MAP = { + 'underride': 0, + 'sender': 1, + 'room': 2, + 'content': 3, + 'override': 4 + } + PRIORITY_CLASS_INVERSE_MAP = {v: k for k,v in PRIORITY_CLASS_MAP.items()} + SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR = ( + "Unrecognised request: You probably wanted a trailing slash") + + 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, device=None): + 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'") + pat = req_obj['pattern'] + if pat.strip("*?[]") == pat: + # no special glob characters so we assume the user means + # 'contains this string' rather than 'is this string' + pat = "*%s*" % (pat,) + conditions = [{ + 'kind': 'event_match', + 'key': 'content.body', + 'pattern': pat + }] + else: + raise InvalidRuleException("Unknown rule template: %s" % (rule_template,)) + + if device: + conditions.append({ + 'kind': 'device', + 'instance_handle': device + }) + + 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 + + @defer.inlineCallbacks + def on_PUT(self, request): + spec = self.rule_spec_from_path(request.postpath) + try: + priority_class = _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, + device=spec['device'] if 'device' in spec else None + ) + 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 as e: + raise SynapseError(400, e.message) + + defer.returnValue((200, {})) + + @defer.inlineCallbacks + def on_DELETE(self, request): + spec = self.rule_spec_from_path(request.postpath) + try: + priority_class = _priority_class_from_spec(spec) + except InvalidRuleException as e: + raise SynapseError(400, e.message) + + user = yield self.auth.get_user_by_req(request) + + if 'device' in spec: + rules = yield self.hs.get_datastore().get_push_rules_for_user_name( + user.to_string() + ) + + for r in rules: + conditions = json.loads(r['conditions']) + ih = _instance_handle_from_conditions(conditions) + if ih == spec['device'] and r['priority_class'] == priority_class: + yield self.hs.get_datastore().delete_push_rule( + user.to_string(), spec['rule_id'] + ) + defer.returnValue((200, {})) + raise NotFoundError() + else: + try: + yield self.hs.get_datastore().delete_push_rule( + user.to_string(), spec['rule_id'], + priority_class=priority_class + ) + defer.returnValue((200, {})) + except StoreError as e: + if e.code == 404: + raise NotFoundError() + else: + raise + + @defer.inlineCallbacks + def on_GET(self, request): + user = yield self.auth.get_user_by_req(request) + + # we build up the full structure and then decide which bits of it + # to send which means doing unnecessary work sometimes but is + # is probably not going to make a whole lot of difference + rawrules = yield self.hs.get_datastore().get_push_rules_for_user_name(user.to_string()) + + rules = {'global': {}, 'device': {}} + + rules['global'] = _add_empty_priority_class_arrays(rules['global']) + + for r in rawrules: + rulearray = None + + r["conditions"] = json.loads(r["conditions"]) + r["actions"] = json.loads(r["actions"]) + + template_name = _priority_class_to_template_name(r['priority_class']) + + if r['priority_class'] > PushRuleRestServlet.PRIORITY_CLASS_MAP['override']: + # per-device rule + instance_handle = _instance_handle_from_conditions(r["conditions"]) + r = _strip_device_condition(r) + if not instance_handle: + continue + if instance_handle not in rules['device']: + rules['device'][instance_handle] = {} + rules['device'][instance_handle] = ( + _add_empty_priority_class_arrays( + rules['device'][instance_handle] + ) + ) + + rulearray = rules['device'][instance_handle][template_name] + else: + rulearray = rules['global'][template_name] + + template_rule = _rule_to_template(r) + if template_rule: + rulearray.append(template_rule) + + path = request.postpath[1:] + + if path == []: + # we're a reference impl: pedantry is our job. + raise UnrecognizedRequestError(PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR) + + if path[0] == '': + defer.returnValue((200, rules)) + elif path[0] == 'global': + path = path[1:] + result = _filter_ruleset_with_path(rules['global'], path) + defer.returnValue((200, result)) + elif path[0] == 'device': + path = path[1:] + if path == []: + raise UnrecognizedRequestError(PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR) + if path[0] == '': + defer.returnValue((200, rules['device'])) + + instance_handle = path[0] + path = path[1:] + if instance_handle not in rules['device']: + ret = {} + ret = _add_empty_priority_class_arrays(ret) + defer.returnValue((200, ret)) + ruleset = rules['device'][instance_handle] + result = _filter_ruleset_with_path(ruleset, path) + defer.returnValue((200, result)) + else: + raise UnrecognizedRequestError() + + def on_OPTIONS(self, _): + return 200, {} + +def _add_empty_priority_class_arrays(d): + for pc in PushRuleRestServlet.PRIORITY_CLASS_MAP.keys(): + d[pc] = [] + return d + +def _instance_handle_from_conditions(conditions): + """ + Given a list of conditions, return the instance handle of the + device rule if there is one + """ + for c in conditions: + if c['kind'] == 'device': + return c['instance_handle'] + return None + +def _filter_ruleset_with_path(ruleset, path): + if path == []: + raise UnrecognizedRequestError(PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR) + + if path[0] == '': + return ruleset + template_kind = path[0] + if template_kind not in ruleset: + raise UnrecognizedRequestError() + path = path[1:] + if path == []: + raise UnrecognizedRequestError(PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR) + if path[0] == '': + return ruleset[template_kind] + rule_id = path[0] + for r in ruleset[template_kind]: + if r['rule_id'] == rule_id: + return r + raise NotFoundError + +def _priority_class_from_spec(spec): + if spec['template'] not in PushRuleRestServlet.PRIORITY_CLASS_MAP.keys(): + raise InvalidRuleException("Unknown template: %s" % (spec['kind'])) + pc = PushRuleRestServlet.PRIORITY_CLASS_MAP[spec['template']] + + if spec['scope'] == 'device': + pc += len(PushRuleRestServlet.PRIORITY_CLASS_MAP) + + return pc + +def _priority_class_to_template_name(pc): + if pc > PushRuleRestServlet.PRIORITY_CLASS_MAP['override']: + # per-device + prio_class_index = pc - len(PushRuleRestServlet.PRIORITY_CLASS_MAP) + return PushRuleRestServlet.PRIORITY_CLASS_INVERSE_MAP[prio_class_index] + else: + return PushRuleRestServlet.PRIORITY_CLASS_INVERSE_MAP[pc] + +def _rule_to_template(rule): + template_name = _priority_class_to_template_name(rule['priority_class']) + if template_name in ['override', 'underride']: + return {k: rule[k] for k in ["rule_id", "conditions", "actions"]} + elif template_name in ["sender", "room"]: + return {k: rule[k] for k in ["rule_id", "actions"]} + elif template_name == 'content': + if len(rule["conditions"]) != 1: + return None + thecond = rule["conditions"][0] + if "pattern" not in thecond: + return None + ret = {k: rule[k] for k in ["rule_id", "actions"]} + ret["pattern"] = thecond["pattern"] + return ret + +def _strip_device_condition(rule): + for i,c in enumerate(rule['conditions']): + if c['kind'] == 'device': + del rule['conditions'][i] + return rule + + +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) |