synapse-product/synapse/rest/client/v1/push_rule.py

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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
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from synapse.api.errors import (
SynapseError, Codes, UnrecognizedRequestError, NotFoundError, StoreError
)
from .base import ClientV1RestServlet, client_path_pattern
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from synapse.storage.push_rule import (
InconsistentRuleException, RuleNotFoundException
)
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import synapse.push.baserules as baserules
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from synapse.push.rulekinds import (
PRIORITY_CLASS_MAP, PRIORITY_CLASS_INVERSE_MAP
)
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import simplejson as json
class PushRuleRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/pushrules/.*$")
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SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR = (
"Unrecognised request: You probably wanted a trailing slash")
@defer.inlineCallbacks
def on_PUT(self, request):
spec = _rule_spec_from_path(request.postpath)
try:
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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 '/' in spec['rule_id'] or '\\' in spec['rule_id']:
raise SynapseError(400, "rule_id may not contain slashes")
content = _parse_json(request)
try:
(conditions, actions) = _rule_tuple_from_request_object(
spec['template'],
spec['rule_id'],
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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=_namespaced_rule_id_from_spec(spec),
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
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def on_DELETE(self, request):
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:
yield self.hs.get_datastore().delete_push_rule(
user.to_string(), namespaced_rule_id
)
defer.returnValue((200, {}))
except StoreError as e:
if e.code == 404:
raise NotFoundError()
else:
raise
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@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
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rawrules = yield self.hs.get_datastore().get_push_rules_for_user_name(
user.to_string()
)
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for r in rawrules:
r["conditions"] = json.loads(r["conditions"])
r["actions"] = json.loads(r["actions"])
ruleslist = baserules.list_with_base_rules(rawrules, user)
rules = {'global': {}, 'device': {}}
rules['global'] = _add_empty_priority_class_arrays(rules['global'])
for r in ruleslist:
rulearray = None
template_name = _priority_class_to_template_name(r['priority_class'])
if r['priority_class'] > PRIORITY_CLASS_MAP['override']:
# 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:
continue
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if profile_tag not in rules['device']:
rules['device'][profile_tag] = {}
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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rulearray = rules['device'][profile_tag][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.
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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 == []:
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raise UnrecognizedRequestError(
PushRuleRestServlet.SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR
)
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if path[0] == '':
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']:
ret = {}
ret = _add_empty_priority_class_arrays(ret)
defer.returnValue((200, ret))
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ruleset = rules['device'][profile_tag]
result = _filter_ruleset_with_path(ruleset, path)
defer.returnValue((200, result))
else:
raise UnrecognizedRequestError()
def on_OPTIONS(self, _):
return 200, {}
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def _rule_spec_from_path(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 or len(path[0]) == 0:
raise UnrecognizedRequestError()
rule_id = path[0]
spec = {
'scope': scope,
'template': template,
'rule_id': rule_id
}
if device:
spec['profile_tag'] = device
return spec
def _rule_tuple_from_request_object(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']
conditions = [{
'kind': 'event_match',
'key': 'content.body',
'pattern': pat
}]
else:
raise InvalidRuleException("Unknown rule template: %s" % (rule_template,))
if device:
conditions.append({
'kind': 'device',
'profile_tag': 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
def _add_empty_priority_class_arrays(d):
for pc in PRIORITY_CLASS_MAP.keys():
d[pc] = []
return d
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def _profile_tag_from_conditions(conditions):
"""
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Given a list of conditions, return the profile tag of the
device rule if there is one
"""
for c in conditions:
if c['kind'] == 'device':
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return c['profile_tag']
return None
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def _filter_ruleset_with_path(ruleset, path):
if path == []:
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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 == []:
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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
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def _priority_class_from_spec(spec):
if spec['template'] not in PRIORITY_CLASS_MAP.keys():
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raise InvalidRuleException("Unknown template: %s" % (spec['kind']))
pc = PRIORITY_CLASS_MAP[spec['template']]
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if spec['scope'] == 'device':
pc += len(PRIORITY_CLASS_MAP)
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return pc
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def _priority_class_to_template_name(pc):
if pc > PRIORITY_CLASS_MAP['override']:
# per-device
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prio_class_index = pc - len(PushRuleRestServlet.PRIORITY_CLASS_MAP)
return PRIORITY_CLASS_INVERSE_MAP[prio_class_index]
else:
return PRIORITY_CLASS_INVERSE_MAP[pc]
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def _rule_to_template(rule):
unscoped_rule_id = None
if 'rule_id' in rule:
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 = {k: rule[k] for k in ["conditions", "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]
if "pattern" not in thecond:
return None
templaterule = {'actions': rule['actions']}
templaterule["pattern"] = thecond["pattern"]
if unscoped_rule_id:
templaterule['rule_id'] = unscoped_rule_id
if 'default' in rule:
templaterule['default'] = rule['default']
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':
del rule['conditions'][i]
return rule
def _namespaced_rule_id_from_spec(spec):
if spec['scope'] == 'global':
scope = 'global'
else:
scope = 'device/%s' % (spec['profile_tag'])
return "%s/%s/%s" % (scope, spec['template'], spec['rule_id'])
def _rule_id_from_namespaced(in_rule_id):
return in_rule_id.split('/')[-1]
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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)