E2E keys: Make federation query share code with client query

Refactor the e2e query handler to separate out the local query, and then make
the federation handler use it.
pull/972/head
Richard van der Hoff 2016-08-02 18:06:31 +01:00
parent 986615b0b2
commit 1efee2f52b
3 changed files with 92 additions and 47 deletions

View File

@ -348,27 +348,9 @@ class FederationServer(FederationBase):
(200, send_content)
)
@defer.inlineCallbacks
@log_function
def on_query_client_keys(self, origin, content):
query = []
for user_id, device_ids in content.get("device_keys", {}).items():
if not device_ids:
query.append((user_id, None))
else:
for device_id in device_ids:
query.append((user_id, device_id))
results = yield self.store.get_e2e_device_keys(query)
json_result = {}
for user_id, device_keys in results.items():
for device_id, json_bytes in device_keys.items():
json_result.setdefault(user_id, {})[device_id] = json.loads(
json_bytes
)
defer.returnValue({"device_keys": json_result})
return self.on_query_request("client_keys", content)
@defer.inlineCallbacks
@log_function

View File

@ -367,10 +367,8 @@ class FederationThirdPartyInviteExchangeServlet(BaseFederationServlet):
class FederationClientKeysQueryServlet(BaseFederationServlet):
PATH = "/user/keys/query"
@defer.inlineCallbacks
def on_POST(self, origin, content, query):
response = yield self.handler.on_query_client_keys(origin, content)
defer.returnValue((200, response))
return self.handler.on_query_client_keys(origin, content)
class FederationClientKeysClaimServlet(BaseFederationServlet):

View File

@ -13,12 +13,15 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import collections
import json
import logging
from twisted.internet import defer
from synapse.api import errors
import synapse.types
from ._base import BaseHandler
logger = logging.getLogger(__name__)
@ -29,39 +32,101 @@ class E2eKeysHandler(BaseHandler):
super(E2eKeysHandler, self).__init__(hs)
self.store = hs.get_datastore()
self.federation = hs.get_replication_layer()
self.is_mine = hs.is_mine
self.is_mine_id = hs.is_mine_id
# doesn't really work as part of the generic query API, because the
# query request requires an object POST, but we abuse the
# "query handler" interface.
self.federation.register_query_handler(
"client_keys", self.on_federation_query_client_keys
)
@defer.inlineCallbacks
def query_devices(self, query_body):
local_query = []
remote_queries = {}
for user_id, device_ids in query_body.get("device_keys", {}).items():
""" Handle a device key query from a client
{
"device_keys": {
"<user_id>": ["<device_id>"]
}
}
->
{
"device_keys": {
"<user_id>": {
"<device_id>": {
...
}
}
}
}
"""
device_keys_query = query_body.get("device_keys", {})
# separate users by domain.
# make a map from domain to user_id to device_ids
queries_by_domain = collections.defaultdict(dict)
for user_id, device_ids in device_keys_query.items():
user = synapse.types.UserID.from_string(user_id)
if self.is_mine(user):
queries_by_domain[user.domain][user_id] = device_ids
# do the queries
# TODO: do these in parallel
results = {}
for destination, destination_query in queries_by_domain.items():
if destination == self.hs.hostname:
res = yield self.query_local_devices(destination_query)
else:
res = yield self.federation.query_client_keys(
destination, {"device_keys": destination_query}
)
res = res["device_keys"]
for user_id, keys in res.items():
if user_id in destination_query:
results[user_id] = keys
defer.returnValue((200, {"device_keys": results}))
@defer.inlineCallbacks
def query_local_devices(self, query):
"""Get E2E device keys for local users
Args:
query (dict[string, list[string]|None): map from user_id to a list
of devices to query (None for all devices)
Returns:
defer.Deferred: (resolves to dict[string, dict[string, dict]]):
map from user_id -> device_id -> device details
"""
local_query = []
for user_id, device_ids in query.items():
if not self.is_mine_id(user_id):
logger.warning("Request for keys for non-local user %s",
user_id)
raise errors.SynapseError(400, "Not a user here")
if not device_ids:
local_query.append((user_id, None))
else:
for device_id in device_ids:
local_query.append((user_id, device_id))
else:
remote_queries.setdefault(user.domain, {})[user_id] = list(
device_ids
)
results = yield self.store.get_e2e_device_keys(local_query)
json_result = {}
# un-jsonify the results
json_result = collections.defaultdict(dict)
for user_id, device_keys in results.items():
for device_id, json_bytes in device_keys.items():
json_result.setdefault(user_id, {})[
device_id] = json.loads(
json_bytes
)
json_result[user_id][device_id] = json.loads(json_bytes)
for destination, device_keys in remote_queries.items():
remote_result = yield self.federation.query_client_keys(
destination, {"device_keys": device_keys}
)
for user_id, keys in remote_result["device_keys"].items():
if user_id in device_keys:
json_result[user_id] = keys
defer.returnValue((200, {"device_keys": json_result}))
defer.returnValue(json_result)
@defer.inlineCallbacks
def on_federation_query_client_keys(self, query_body):
""" Handle a device key query from a federated server
"""
device_keys_query = query_body.get("device_keys", {})
res = yield self.query_local_devices(device_keys_query)
defer.returnValue({"device_keys": res})