Merge branch 'develop' of github.com:matrix-org/synapse into timeout-federation-requests

1 files changed, 411 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..c4e7dfcf0e
--- /dev/null
+++ b/synapse/rest/client/v1/push_rule.py
@@ -0,0 +1,411 @@
+# -*- 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 synapse.push.baserules as baserules
+from synapse.push.rulekinds import (
+    PRIORITY_CLASS_MAP, PRIORITY_CLASS_INVERSE_MAP
+)
+
+import json
+
+
+class PushRuleRestServlet(ClientV1RestServlet):
+    PATTERN = client_path_pattern("/pushrules/.*$")
+    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:
+            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'],
+                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
+    def on_DELETE(self, request):
+        spec = _rule_spec_from_path(request.postpath)
+
+        user, _ = yield self.auth.get_user_by_req(request)
+
+        namespaced_rule_id = _namespaced_rule_id_from_spec(spec)
+
+        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
+
+    @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()
+        )
+
+        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
+                profile_tag = _profile_tag_from_conditions(r["conditions"])
+                r = _strip_device_condition(r)
+                if not profile_tag:
+                    continue
+                if profile_tag not in rules['device']:
+                    rules['device'][profile_tag] = {}
+                    rules['device'][profile_tag] = (
+                        _add_empty_priority_class_arrays(
+                            rules['device'][profile_tag]
+                        )
+                    )
+
+                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.
+            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']))
+
+            profile_tag = path[0]
+            path = path[1:]
+            if profile_tag not in rules['device']:
+                ret = {}
+                ret = _add_empty_priority_class_arrays(ret)
+                defer.returnValue((200, ret))
+            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, {}
+
+
+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:
+        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
+
+
+def _profile_tag_from_conditions(conditions):
+    """
+    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':
+            return c['profile_tag']
+    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 PRIORITY_CLASS_MAP.keys():
+        raise InvalidRuleException("Unknown template: %s" % (spec['kind']))
+    pc = PRIORITY_CLASS_MAP[spec['template']]
+
+    if spec['scope'] == 'device':
+        pc += len(PRIORITY_CLASS_MAP)
+
+    return pc
+
+
+def _priority_class_to_template_name(pc):
+    if pc > PRIORITY_CLASS_MAP['override']:
+        # per-device
+        prio_class_index = pc - len(PushRuleRestServlet.PRIORITY_CLASS_MAP)
+        return PRIORITY_CLASS_INVERSE_MAP[prio_class_index]
+    else:
+        return PRIORITY_CLASS_INVERSE_MAP[pc]
+
+
+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
+
+
+def _strip_device_condition(rule):
+    for i, c in enumerate(rule['conditions']):
+        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]
+
+
+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)