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Remove unused federation endpoint (`query_auth`) (#7026)

This commit is contained in:
Patrick Cloke 2020-03-17 08:04:49 -04:00 committed by GitHub
parent 60724c46b7
commit 7581d30e9f
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5 changed files with 80 additions and 146 deletions
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1
changelog.d/7026.removal Normal file
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@ -0,0 +1 @@
Remove the unused query_auth federation endpoint per MSC2451.

82
synapse/federation/federation_base.py
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@ -39,10 +39,8 @@ from synapse.logging.context import (
LoggingContext,
PreserveLoggingContext,
make_deferred_yieldable,
preserve_fn,
)
from synapse.types import JsonDict, get_domain_from_id
from synapse.util import unwrapFirstError
logger = logging.getLogger(__name__)
@ -57,86 +55,6 @@ class FederationBase(object):
self.store = hs.get_datastore()
self._clock = hs.get_clock()
@defer.inlineCallbacks
def _check_sigs_and_hash_and_fetch(
self,
origin: str,
pdus: List[EventBase],
room_version: str,
outlier: bool = False,
include_none: bool = False,
):
"""Takes a list of PDUs and checks the signatures and hashs of each
one. If a PDU fails its signature check then we check if we have it in
the database and if not then request if from the originating server of
that PDU.
If a PDU fails its content hash check then it is redacted.
The given list of PDUs are not modified, instead the function returns
a new list.
Args:
origin
pdu
room_version
outlier: Whether the events are outliers or not
include_none: Whether to include None in the returned list
for events that have failed their checks
Returns:
Deferred : A list of PDUs that have valid signatures and hashes.
"""
deferreds = self._check_sigs_and_hashes(room_version, pdus)
@defer.inlineCallbacks
def handle_check_result(pdu: EventBase, deferred: Deferred):
try:
res = yield make_deferred_yieldable(deferred)
except SynapseError:
res = None
if not res:
# Check local db.
res = yield self.store.get_event(
pdu.event_id, allow_rejected=True, allow_none=True
)
if not res and pdu.origin != origin:
try:
# This should not exist in the base implementation, until
# this is fixed, ignore it for typing. See issue #6997.
res = yield defer.ensureDeferred(
self.get_pdu( # type: ignore
destinations=[pdu.origin],
event_id=pdu.event_id,
room_version=room_version,
outlier=outlier,
timeout=10000,
)
)
except SynapseError:
pass
if not res:
logger.warning(
"Failed to find copy of %s with valid signature", pdu.event_id
)
return res
handle = preserve_fn(handle_check_result)
deferreds2 = [handle(pdu, deferred) for pdu, deferred in zip(pdus, deferreds)]
valid_pdus = yield make_deferred_yieldable(
defer.gatherResults(deferreds2, consumeErrors=True)
).addErrback(unwrapFirstError)
if include_none:
return valid_pdus
else:
return [p for p in valid_pdus if p]
def _check_sigs_and_hash(self, room_version: str, pdu: EventBase) -> Deferred:
return make_deferred_yieldable(
self._check_sigs_and_hashes(room_version, [pdu])[0]

80
synapse/federation/federation_client.py
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@ -33,6 +33,7 @@ from typing import (
from prometheus_client import Counter
from twisted.internet import defer
from twisted.internet.defer import Deferred
from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import (
@ -51,7 +52,7 @@ from synapse.api.room_versions import (
)
from synapse.events import EventBase, builder
from synapse.federation.federation_base import FederationBase, event_from_pdu_json
from synapse.logging.context import make_deferred_yieldable
from synapse.logging.context import make_deferred_yieldable, preserve_fn
from synapse.logging.utils import log_function
from synapse.types import JsonDict
from synapse.util import unwrapFirstError
@ -345,6 +346,83 @@ class FederationClient(FederationBase):
return state_event_ids, auth_event_ids
async def _check_sigs_and_hash_and_fetch(
self,
origin: str,
pdus: List[EventBase],
room_version: str,
outlier: bool = False,
include_none: bool = False,
) -> List[EventBase]:
"""Takes a list of PDUs and checks the signatures and hashs of each
one. If a PDU fails its signature check then we check if we have it in
the database and if not then request if from the originating server of
that PDU.
If a PDU fails its content hash check then it is redacted.
The given list of PDUs are not modified, instead the function returns
a new list.
Args:
origin
pdu
room_version
outlier: Whether the events are outliers or not
include_none: Whether to include None in the returned list
for events that have failed their checks
Returns:
Deferred : A list of PDUs that have valid signatures and hashes.
"""
deferreds = self._check_sigs_and_hashes(room_version, pdus)
@defer.inlineCallbacks
def handle_check_result(pdu: EventBase, deferred: Deferred):
try:
res = yield make_deferred_yieldable(deferred)
except SynapseError:
res = None
if not res:
# Check local db.
res = yield self.store.get_event(
pdu.event_id, allow_rejected=True, allow_none=True
)
if not res and pdu.origin != origin:
try:
res = yield defer.ensureDeferred(
self.get_pdu(
destinations=[pdu.origin],
event_id=pdu.event_id,
room_version=room_version, # type: ignore
outlier=outlier,
timeout=10000,
)
)
except SynapseError:
pass
if not res:
logger.warning(
"Failed to find copy of %s with valid signature", pdu.event_id
)
return res
handle = preserve_fn(handle_check_result)
deferreds2 = [handle(pdu, deferred) for pdu, deferred in zip(pdus, deferreds)]
valid_pdus = await make_deferred_yieldable(
defer.gatherResults(deferreds2, consumeErrors=True)
).addErrback(unwrapFirstError)
if include_none:
return valid_pdus
else:
return [p for p in valid_pdus if p]
async def get_event_auth(self, destination, room_id, event_id):
res = await self.transport_layer.get_event_auth(destination, room_id, event_id)

51
synapse/federation/federation_server.py
View File

@ -470,57 +470,6 @@ class FederationServer(FederationBase):
res = {"auth_chain": [a.get_pdu_json(time_now) for a in auth_pdus]}
return 200, res
async def on_query_auth_request(self, origin, content, room_id, event_id):
"""
Content is a dict with keys::
auth_chain (list): A list of events that give the auth chain.
missing (list): A list of event_ids indicating what the other
side (`origin`) think we're missing.
rejects (dict): A mapping from event_id to a 2-tuple of reason
string and a proof (or None) of why the event was rejected.
The keys of this dict give the list of events the `origin` has
rejected.
Args:
origin (str)
content (dict)
event_id (str)
Returns:
Deferred: Results in `dict` with the same format as `content`
"""
with (await self._server_linearizer.queue((origin, room_id))):
origin_host, _ = parse_server_name(origin)
await self.check_server_matches_acl(origin_host, room_id)
room_version = await self.store.get_room_version(room_id)
auth_chain = [
event_from_pdu_json(e, room_version) for e in content["auth_chain"]
]
signed_auth = await self._check_sigs_and_hash_and_fetch(
origin, auth_chain, outlier=True, room_version=room_version.identifier
)
ret = await self.handler.on_query_auth(
origin,
event_id,
room_id,
signed_auth,
content.get("rejects", []),
content.get("missing", []),
)
time_now = self._clock.time_msec()
send_content = {
"auth_chain": [e.get_pdu_json(time_now) for e in ret["auth_chain"]],
"rejects": ret.get("rejects", []),
"missing": ret.get("missing", []),
}
return 200, send_content
@log_function
def on_query_client_keys(self, origin, content):
return self.on_query_request("client_keys", content)

12
synapse/federation/transport/server.py
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@ -643,17 +643,6 @@ class FederationClientKeysClaimServlet(BaseFederationServlet):
return 200, response
class FederationQueryAuthServlet(BaseFederationServlet):
PATH = "/query_auth/(?P<context>[^/]*)/(?P<event_id>[^/]*)"
async def on_POST(self, origin, content, query, context, event_id):
new_content = await self.handler.on_query_auth_request(
origin, content, context, event_id
)
return 200, new_content
class FederationGetMissingEventsServlet(BaseFederationServlet):
# TODO(paul): Why does this path alone end with "/?" optional?
PATH = "/get_missing_events/(?P<room_id>[^/]*)/?"
@ -1412,7 +1401,6 @@ FEDERATION_SERVLET_CLASSES = (
FederationV2SendLeaveServlet,
FederationV1InviteServlet,
FederationV2InviteServlet,
FederationQueryAuthServlet,
FederationGetMissingEventsServlet,
FederationEventAuthServlet,
FederationClientKeysQueryServlet,