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Move _create_new_client_event and handle_new_client_event out of base handler

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This commit is contained in:
Mark Haines 2016-05-11 09:09:20 +01:00
parent ae1af262f6
commit 30057b1e15
4 changed files with 214 additions and 204 deletions
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198
synapse/handlers/_base.py
View File

@ -15,13 +15,11 @@
from twisted.internet import defer
from synapse.api.errors import LimitExceededError, SynapseError, AuthError
from synapse.crypto.event_signing import add_hashes_and_signatures
from synapse.api.errors import LimitExceededError
from synapse.api.constants import Membership, EventTypes
from synapse.types import UserID, RoomAlias, Requester, get_domian_from_id
from synapse.push.action_generator import ActionGenerator
from synapse.types import UserID, Requester
from synapse.util.logcontext import PreserveLoggingContext, preserve_fn
from synapse.util.logcontext import preserve_fn
import logging
@ -65,7 +63,6 @@ class BaseHandler(object):
self.clock = hs.get_clock()
self.hs = hs
self.signing_key = hs.config.signing_key[0]
self.server_name = hs.hostname
self.event_builder_factory = hs.get_event_builder_factory()
@ -248,56 +245,6 @@ class BaseHandler(object):
retry_after_ms=int(1000 * (time_allowed - time_now)),
)
@defer.inlineCallbacks
def _create_new_client_event(self, builder, prev_event_ids=None):
if prev_event_ids:
prev_events = yield self.store.add_event_hashes(prev_event_ids)
prev_max_depth = yield self.store.get_max_depth_of_events(prev_event_ids)
depth = prev_max_depth + 1
else:
latest_ret = yield self.store.get_latest_event_ids_and_hashes_in_room(
builder.room_id,
)
if latest_ret:
depth = max([d for _, _, d in latest_ret]) + 1
else:
depth = 1
prev_events = [
(event_id, prev_hashes)
for event_id, prev_hashes, _ in latest_ret
]
builder.prev_events = prev_events
builder.depth = depth
state_handler = self.state_handler
context = yield state_handler.compute_event_context(builder)
if builder.is_state():
builder.prev_state = yield self.store.add_event_hashes(
context.prev_state_events
)
yield self.auth.add_auth_events(builder, context)
add_hashes_and_signatures(
builder, self.server_name, self.signing_key
)
event = builder.build()
logger.debug(
"Created event %s with current state: %s",
event.event_id, context.current_state,
)
defer.returnValue(
(event, context,)
)
def is_host_in_room(self, current_state):
room_members = [
(state_key, event.membership)
@ -318,145 +265,6 @@ class BaseHandler(object):
return True
return False
@defer.inlineCallbacks
def handle_new_client_event(
self,
requester,
event,
context,
ratelimit=True,
extra_users=[]
):
# We now need to go and hit out to wherever we need to hit out to.
if ratelimit:
self.ratelimit(requester)
try:
self.auth.check(event, auth_events=context.current_state)
except AuthError as err:
logger.warn("Denying new event %r because %s", event, err)
raise err
yield self.maybe_kick_guest_users(event, context.current_state.values())
if event.type == EventTypes.CanonicalAlias:
# Check the alias is acually valid (at this time at least)
room_alias_str = event.content.get("alias", None)
if room_alias_str:
room_alias = RoomAlias.from_string(room_alias_str)
directory_handler = self.hs.get_handlers().directory_handler
mapping = yield directory_handler.get_association(room_alias)
if mapping["room_id"] != event.room_id:
raise SynapseError(
400,
"Room alias %s does not point to the room" % (
room_alias_str,
)
)
federation_handler = self.hs.get_handlers().federation_handler
if event.type == EventTypes.Member:
if event.content["membership"] == Membership.INVITE:
def is_inviter_member_event(e):
return (
e.type == EventTypes.Member and
e.sender == event.sender
)
event.unsigned["invite_room_state"] = [
{
"type": e.type,
"state_key": e.state_key,
"content": e.content,
"sender": e.sender,
}
for k, e in context.current_state.items()
if e.type in self.hs.config.room_invite_state_types
or is_inviter_member_event(e)
]
invitee = UserID.from_string(event.state_key)
if not self.hs.is_mine(invitee):
# TODO: Can we add signature from remote server in a nicer
# way? If we have been invited by a remote server, we need
# to get them to sign the event.
returned_invite = yield federation_handler.send_invite(
invitee.domain,
event,
)
event.unsigned.pop("room_state", None)
# TODO: Make sure the signatures actually are correct.
event.signatures.update(
returned_invite.signatures
)
if event.type == EventTypes.Redaction:
if self.auth.check_redaction(event, auth_events=context.current_state):
original_event = yield self.store.get_event(
event.redacts,
check_redacted=False,
get_prev_content=False,
allow_rejected=False,
allow_none=False
)
if event.user_id != original_event.user_id:
raise AuthError(
403,
"You don't have permission to redact events"
)
if event.type == EventTypes.Create and context.current_state:
raise AuthError(
403,
"Changing the room create event is forbidden",
)
action_generator = ActionGenerator(self.hs)
yield action_generator.handle_push_actions_for_event(
event, context, self
)
(event_stream_id, max_stream_id) = yield self.store.persist_event(
event, context=context
)
# this intentionally does not yield: we don't care about the result
# and don't need to wait for it.
preserve_fn(self.hs.get_pusherpool().on_new_notifications)(
event_stream_id, max_stream_id
)
destinations = set()
for k, s in context.current_state.items():
try:
if k[0] == EventTypes.Member:
if s.content["membership"] == Membership.JOIN:
destinations.add(get_domian_from_id(s.state_key))
except SynapseError:
logger.warn(
"Failed to get destination from event %s", s.event_id
)
with PreserveLoggingContext():
# Don't block waiting on waking up all the listeners.
self.notifier.on_new_room_event(
event, event_stream_id, max_stream_id,
extra_users=extra_users
)
# If invite, remove room_state from unsigned before sending.
event.unsigned.pop("invite_room_state", None)
federation_handler.handle_new_event(
event, destinations=destinations,
)
@defer.inlineCallbacks
def maybe_kick_guest_users(self, event, current_state):
# Technically this function invalidates current_state by changing it.

17
synapse/handlers/federation.py
View File

@ -682,7 +682,8 @@ class FederationHandler(BaseHandler):
})
try:
event, context = yield self._create_new_client_event(
message_handler = self.hs.get_handlers().message_handler
event, context = yield message_handler._create_new_client_event(
builder=builder,
)
except AuthError as e:
@ -913,7 +914,8 @@ class FederationHandler(BaseHandler):
"state_key": user_id,
})
event, context = yield self._create_new_client_event(
message_handler = self.hs.get_handlers().message_handler
event, context = yield message_handler._create_new_client_event(
builder=builder,
)
@ -1688,7 +1690,10 @@ class FederationHandler(BaseHandler):
if (yield self.auth.check_host_in_room(room_id, self.hs.hostname)):
builder = self.event_builder_factory.new(event_dict)
EventValidator().validate_new(builder)
event, context = yield self._create_new_client_event(builder=builder)
message_handler = self.hs.get_handlers().message_handler
event, context = yield message_handler._create_new_client_event(
builder=builder
)
event, context = yield self.add_display_name_to_third_party_invite(
event_dict, event, context
@ -1716,7 +1721,8 @@ class FederationHandler(BaseHandler):
def on_exchange_third_party_invite_request(self, origin, room_id, event_dict):
builder = self.event_builder_factory.new(event_dict)
event, context = yield self._create_new_client_event(
message_handler = self.hs.get_handlers().message_handler
event, context = yield message_handler._create_new_client_event(
builder=builder,
)
@ -1755,7 +1761,8 @@ class FederationHandler(BaseHandler):
event_dict["content"]["third_party_invite"]["display_name"] = display_name
builder = self.event_builder_factory.new(event_dict)
EventValidator().validate_new(builder)
event, context = yield self._create_new_client_event(builder=builder)
message_handler = self.hs.get_handlers().message_handler
event, context = yield message_handler._create_new_client_event(builder=builder)
defer.returnValue((event, context))
@defer.inlineCallbacks

199
synapse/handlers/message.py
View File

@ -17,13 +17,18 @@ from twisted.internet import defer
from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import AuthError, Codes, SynapseError
from synapse.streams.config import PaginationConfig
from synapse.crypto.event_signing import add_hashes_and_signatures
from synapse.events.utils import serialize_event
from synapse.events.validator import EventValidator
from synapse.push.action_generator import ActionGenerator
from synapse.streams.config import PaginationConfig
from synapse.types import (
UserID, RoomAlias, RoomStreamToken, StreamToken, get_domian_from_id
)
from synapse.util import unwrapFirstError
from synapse.util.async import concurrently_execute
from synapse.util.caches.snapshot_cache import SnapshotCache
from synapse.types import UserID, RoomStreamToken, StreamToken
from synapse.util.logcontext import PreserveLoggingContext, preserve_fn
from ._base import BaseHandler
@ -43,6 +48,7 @@ class MessageHandler(BaseHandler):
self.clock = hs.get_clock()
self.validator = EventValidator()
self.snapshot_cache = SnapshotCache()
self.signing_key = hs.config.signing_key[0]
@defer.inlineCallbacks
def get_messages(self, requester, room_id=None, pagin_config=None,
@ -724,3 +730,192 @@ class MessageHandler(BaseHandler):
ret["membership"] = membership
defer.returnValue(ret)
@defer.inlineCallbacks
def _create_new_client_event(self, builder, prev_event_ids=None):
if prev_event_ids:
prev_events = yield self.store.add_event_hashes(prev_event_ids)
prev_max_depth = yield self.store.get_max_depth_of_events(prev_event_ids)
depth = prev_max_depth + 1
else:
latest_ret = yield self.store.get_latest_event_ids_and_hashes_in_room(
builder.room_id,
)
if latest_ret:
depth = max([d for _, _, d in latest_ret]) + 1
else:
depth = 1
prev_events = [
(event_id, prev_hashes)
for event_id, prev_hashes, _ in latest_ret
]
builder.prev_events = prev_events
builder.depth = depth
state_handler = self.state_handler
context = yield state_handler.compute_event_context(builder)
if builder.is_state():
builder.prev_state = yield self.store.add_event_hashes(
context.prev_state_events
)
yield self.auth.add_auth_events(builder, context)
add_hashes_and_signatures(
builder, self.server_name, self.signing_key
)
event = builder.build()
logger.debug(
"Created event %s with current state: %s",
event.event_id, context.current_state,
)
defer.returnValue(
(event, context,)
)
@defer.inlineCallbacks
def handle_new_client_event(
self,
requester,
event,
context,
ratelimit=True,
extra_users=[]
):
# We now need to go and hit out to wherever we need to hit out to.
if ratelimit:
self.ratelimit(requester)
try:
self.auth.check(event, auth_events=context.current_state)
except AuthError as err:
logger.warn("Denying new event %r because %s", event, err)
raise err
yield self.maybe_kick_guest_users(event, context.current_state.values())
if event.type == EventTypes.CanonicalAlias:
# Check the alias is acually valid (at this time at least)
room_alias_str = event.content.get("alias", None)
if room_alias_str:
room_alias = RoomAlias.from_string(room_alias_str)
directory_handler = self.hs.get_handlers().directory_handler
mapping = yield directory_handler.get_association(room_alias)
if mapping["room_id"] != event.room_id:
raise SynapseError(
400,
"Room alias %s does not point to the room" % (
room_alias_str,
)
)
federation_handler = self.hs.get_handlers().federation_handler
if event.type == EventTypes.Member:
if event.content["membership"] == Membership.INVITE:
def is_inviter_member_event(e):
return (
e.type == EventTypes.Member and
e.sender == event.sender
)
event.unsigned["invite_room_state"] = [
{
"type": e.type,
"state_key": e.state_key,
"content": e.content,
"sender": e.sender,
}
for k, e in context.current_state.items()
if e.type in self.hs.config.room_invite_state_types
or is_inviter_member_event(e)
]
invitee = UserID.from_string(event.state_key)
if not self.hs.is_mine(invitee):
# TODO: Can we add signature from remote server in a nicer
# way? If we have been invited by a remote server, we need
# to get them to sign the event.
returned_invite = yield federation_handler.send_invite(
invitee.domain,
event,
)
event.unsigned.pop("room_state", None)
# TODO: Make sure the signatures actually are correct.
event.signatures.update(
returned_invite.signatures
)
if event.type == EventTypes.Redaction:
if self.auth.check_redaction(event, auth_events=context.current_state):
original_event = yield self.store.get_event(
event.redacts,
check_redacted=False,
get_prev_content=False,
allow_rejected=False,
allow_none=False
)
if event.user_id != original_event.user_id:
raise AuthError(
403,
"You don't have permission to redact events"
)
if event.type == EventTypes.Create and context.current_state:
raise AuthError(
403,
"Changing the room create event is forbidden",
)
action_generator = ActionGenerator(self.hs)
yield action_generator.handle_push_actions_for_event(
event, context, self
)
(event_stream_id, max_stream_id) = yield self.store.persist_event(
event, context=context
)
# this intentionally does not yield: we don't care about the result
# and don't need to wait for it.
preserve_fn(self.hs.get_pusherpool().on_new_notifications)(
event_stream_id, max_stream_id
)
destinations = set()
for k, s in context.current_state.items():
try:
if k[0] == EventTypes.Member:
if s.content["membership"] == Membership.JOIN:
destinations.add(get_domian_from_id(s.state_key))
except SynapseError:
logger.warn(
"Failed to get destination from event %s", s.event_id
)
with PreserveLoggingContext():
# Don't block waiting on waking up all the listeners.
self.notifier.on_new_room_event(
event, event_stream_id, max_stream_id,
extra_users=extra_users
)
# If invite, remove room_state from unsigned before sending.
event.unsigned.pop("invite_room_state", None)
federation_handler.handle_new_event(
event, destinations=destinations,
)

4
synapse/handlers/room_member.py
View File

@ -113,7 +113,7 @@ class RoomMemberHandler(BaseHandler):
prev_event_ids=prev_event_ids,
)
yield self.handle_new_client_event(
yield self.msg_handler.handle_new_client_event(
requester,
event,
context,
@ -357,7 +357,7 @@ class RoomMemberHandler(BaseHandler):
# so don't really fit into the general auth process.
raise AuthError(403, "Guest access not allowed")
yield self.handle_new_client_event(
yield message_handler.handle_new_client_event(
requester,
event,
context,