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synapse-old/synapse/rest/client/v2_alpha/keys.py

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# -*- coding: utf-8 -*-
# Copyright 2015 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
from synapse.http.servlet import RestServlet
from syutil.jsonutil import encode_canonical_json
from ._base import client_v2_pattern
import simplejson as json
import logging
logger = logging.getLogger(__name__)
class KeyUploadServlet(RestServlet):
"""
POST /keys/upload/<device_id> HTTP/1.1
Content-Type: application/json
{
"device_keys": {
"user_id": "<user_id>",
"device_id": "<device_id>",
"valid_until_ts": <millisecond_timestamp>,
"algorithms": [
"m.olm.curve25519-aes-sha256",
]
"keys": {
"<algorithm>:<key_id>": "<key_base64>",
},
"signatures:" {
"<user_id>/<device_id>" {
"<algorithm>:<key_id>": "<signature_base64>"
} } },
"one_time_keys": {
"<algorithm>:<key_id>": "<key_base64>"
},
"one_time_keys_valid_for": <millisecond duration>,
}
"""
PATTERN = client_v2_pattern("/keys/upload/(?P<device_id>[^/]*)")
def __init__(self, hs):
super(KeyUploadServlet, self).__init__()
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self.auth = hs.get_auth()
@defer.inlineCallbacks
def on_POST(self, request, device_id):
auth_user, client_info = yield self.auth.get_user_by_req(request)
user_id = auth_user.to_string()
# TODO: Check that the device_id matches that in the authentication
# or derive the device_id from the authentication instead.
try:
body = json.loads(request.content.read())
except:
raise SynapseError(400, "Invalid key JSON")
time_now = self.clock.time_msec()
# TODO: Validate the JSON to make sure it has the right keys.
device_keys = body.get("device_keys", None)
if device_keys:
logger.info(
"Updating device_keys for device %r for user %r at %d",
device_id, auth_user, time_now
)
# TODO: Sign the JSON with the server key
yield self.store.set_e2e_device_keys(
user_id, device_id, time_now,
encode_canonical_json(device_keys)
)
one_time_keys = body.get("one_time_keys", None)
one_time_keys_valid_for = body.get("one_time_keys_valid_for", None)
if one_time_keys:
valid_until = int(one_time_keys_valid_for) + time_now
logger.info(
"Adding %d one_time_keys for device %r for user %r at %d"
" valid_until %d",
len(one_time_keys), device_id, user_id, time_now, valid_until
)
key_list = []
for key_id, key_json in one_time_keys.items():
algorithm, key_id = key_id.split(":")
key_list.append((
algorithm, key_id, encode_canonical_json(key_json)
))
yield self.store.add_e2e_one_time_keys(
user_id, device_id, time_now, valid_until, key_list
)
result = yield self.store.count_e2e_one_time_keys(
user_id, device_id, time_now
)
defer.returnValue((200, {"one_time_key_counts": result}))
@defer.inlineCallbacks
def on_GET(self, request, device_id):
auth_user, client_info = yield self.auth.get_user_by_req(request)
user_id = auth_user.to_string()
time_now = self.clock.time_msec()
result = yield self.store.count_e2e_one_time_keys(
user_id, device_id, time_now
)
defer.returnValue((200, {"one_time_key_counts": result}))
class KeyQueryServlet(RestServlet):
"""
GET /keys/query/<user_id> HTTP/1.1
GET /keys/query/<user_id>/<device_id> HTTP/1.1
POST /keys/query HTTP/1.1
Content-Type: application/json
{
"device_keys": {
"<user_id>": ["<device_id>"]
} }
HTTP/1.1 200 OK
{
"device_keys": {
"<user_id>": {
"<device_id>": {
"user_id": "<user_id>", // Duplicated to be signed
"device_id": "<device_id>", // Duplicated to be signed
"valid_until_ts": <millisecond_timestamp>,
"algorithms": [ // List of supported algorithms
"m.olm.curve25519-aes-sha256",
],
"keys": { // Must include a ed25519 signing key
"<algorithm>:<key_id>": "<key_base64>",
},
"signatures:" {
// Must be signed with device's ed25519 key
"<user_id>/<device_id>": {
"<algorithm>:<key_id>": "<signature_base64>"
}
// Must be signed by this server.
"<server_name>": {
"<algorithm>:<key_id>": "<signature_base64>"
} } } } } }
"""
PATTERN = client_v2_pattern(
"/keys/query(?:"
"/(?P<user_id>[^/]*)(?:"
"/(?P<device_id>[^/]*)"
")?"
")?"
)
def __init__(self, hs):
super(KeyQueryServlet, self).__init__()
self.store = hs.get_datastore()
self.auth = hs.get_auth()
@defer.inlineCallbacks
def on_POST(self, request, user_id, device_id):
logger.debug("onPOST")
yield self.auth.get_user_by_req(request)
try:
body = json.loads(request.content.read())
except:
raise SynapseError(400, "Invalid key JSON")
query = []
for user_id, device_ids in body.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([(user_id, device_id)])
defer.returnValue(self.json_result(request, results))
@defer.inlineCallbacks
def on_GET(self, request, user_id, device_id):
auth_user, client_info = yield self.auth.get_user_by_req(request)
auth_user_id = auth_user.to_string()
if not user_id:
user_id = auth_user_id
if not device_id:
device_id = None
# Returns a map of user_id->device_id->json_bytes.
results = yield self.store.get_e2e_device_keys([(user_id, device_id)])
defer.returnValue(self.json_result(request, results))
def json_result(self, request, results):
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
)
return (200, {"device_keys": json_result})
class OneTimeKeyServlet(RestServlet):
"""
GET /keys/take/<user-id>/<device-id>/<algorithm> HTTP/1.1
POST /keys/take HTTP/1.1
{
"one_time_keys": {
"<user_id>": {
"<device_id>": "<algorithm>"
} } }
HTTP/1.1 200 OK
{
"one_time_keys": {
"<user_id>": {
"<device_id>": {
"<algorithm>:<key_id>": "<key_base64>"
} } } }
"""
PATTERN = client_v2_pattern(
"/keys/take(?:/?|(?:/"
"(?P<user_id>[^/]*)/(?P<device_id>[^/]*)/(?P<algorithm>[^/]*)"
")?)"
)
def __init__(self, hs):
super(OneTimeKeyServlet, self).__init__()
self.store = hs.get_datastore()
self.auth = hs.get_auth()
self.clock = hs.get_clock()
@defer.inlineCallbacks
def on_GET(self, request, user_id, device_id, algorithm):
yield self.auth.get_user_by_req(request)
time_now = self.clock.time_msec()
results = yield self.store.take_e2e_one_time_keys(
[(user_id, device_id, algorithm)], time_now
)
defer.returnValue(self.json_result(request, results))
@defer.inlineCallbacks
def on_POST(self, request, user_id, device_id, algorithm):
yield self.auth.get_user_by_req(request)
try:
body = json.loads(request.content.read())
except:
raise SynapseError(400, "Invalid key JSON")
query = []
for user_id, device_keys in body.get("one_time_keys", {}).items():
for device_id, algorithm in device_keys.items():
query.append((user_id, device_id, algorithm))
time_now = self.clock.time_msec()
results = yield self.store.take_e2e_one_time_keys(query, time_now)
defer.returnValue(self.json_result(request, results))
def json_result(self, request, results):
json_result = {}
for user_id, device_keys in results.items():
for device_id, keys in device_keys.items():
for key_id, json_bytes in keys.items():
json_result.setdefault(user_id, {})[device_id] = {
key_id: json.loads(json_bytes)
}
return (200, {"one_time_keys": json_result})
def register_servlets(hs, http_server):
KeyUploadServlet(hs).register(http_server)
KeyQueryServlet(hs).register(http_server)
OneTimeKeyServlet(hs).register(http_server)
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