Merge pull request #1112 from matrix-org/markjh/e2e_key_handler

Move the E2E key handling into the e2e handler

synapse/handlers/e2e_keys.py

@@ -13,9 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import json
+import ujson as json
 import logging
 
+from canonicaljson import encode_canonical_json
 from twisted.internet import defer
 
 from synapse.api.errors import SynapseError, CodeMessageException
@@ -29,7 +30,9 @@ class E2eKeysHandler(object):
     def __init__(self, hs):
         self.store = hs.get_datastore()
         self.federation = hs.get_replication_layer()
+        self.device_handler = hs.get_device_handler()
         self.is_mine_id = hs.is_mine_id
+        self.clock = hs.get_clock()
 
         # doesn't really work as part of the generic query API, because the
         # query request requires an object POST, but we abuse the
@@ -103,9 +106,9 @@ class E2eKeysHandler(object):
             for destination in remote_queries
         ]))
 
-        defer.returnValue((200, {
+        defer.returnValue({
             "device_keys": results, "failures": failures,
-        }))
+        })
 
     @defer.inlineCallbacks
     def query_local_devices(self, query):
@@ -159,3 +162,99 @@ class E2eKeysHandler(object):
         device_keys_query = query_body.get("device_keys", {})
         res = yield self.query_local_devices(device_keys_query)
         defer.returnValue({"device_keys": res})
+
+    @defer.inlineCallbacks
+    def claim_one_time_keys(self, query, timeout):
+        local_query = []
+        remote_queries = {}
+
+        for user_id, device_keys in query.get("one_time_keys", {}).items():
+            if self.is_mine_id(user_id):
+                for device_id, algorithm in device_keys.items():
+                    local_query.append((user_id, device_id, algorithm))
+            else:
+                domain = get_domain_from_id(user_id)
+                remote_queries.setdefault(domain, {})[user_id] = device_keys
+
+        results = yield self.store.claim_e2e_one_time_keys(local_query)
+
+        json_result = {}
+        failures = {}
+        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)
+                    }
+
+        @defer.inlineCallbacks
+        def claim_client_keys(destination):
+            device_keys = remote_queries[destination]
+            try:
+                remote_result = yield self.federation.claim_client_keys(
+                    destination,
+                    {"one_time_keys": device_keys},
+                    timeout=timeout
+                )
+                for user_id, keys in remote_result["one_time_keys"].items():
+                    if user_id in device_keys:
+                        json_result[user_id] = keys
+            except CodeMessageException as e:
+                failures[destination] = {
+                    "status": e.code, "message": e.message
+                }
+
+        yield preserve_context_over_deferred(defer.gatherResults([
+            preserve_fn(claim_client_keys)(destination)
+            for destination in remote_queries
+        ]))
+
+        defer.returnValue({
+            "one_time_keys": json_result,
+            "failures": failures
+        })
+
+    @defer.inlineCallbacks
+    def upload_keys_for_user(self, user_id, device_id, keys):
+        time_now = self.clock.time_msec()
+
+        # TODO: Validate the JSON to make sure it has the right keys.
+        device_keys = keys.get("device_keys", None)
+        if device_keys:
+            logger.info(
+                "Updating device_keys for device %r for user %s at %d",
+                device_id, user_id, 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 = keys.get("one_time_keys", None)
+        if one_time_keys:
+            logger.info(
+                "Adding %d one_time_keys for device %r for user %r at %d",
+                len(one_time_keys), device_id, user_id, time_now
+            )
+            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, key_list
+            )
+
+        # the device should have been registered already, but it may have been
+        # deleted due to a race with a DELETE request. Or we may be using an
+        # old access_token without an associated device_id. Either way, we
+        # need to double-check the device is registered to avoid ending up with
+        # keys without a corresponding device.
+        self.device_handler.check_device_registered(user_id, device_id)
+
+        result = yield self.store.count_e2e_one_time_keys(user_id, device_id)
+
+        defer.returnValue({"one_time_key_counts": result})

synapse/rest/client/v2_alpha/keys.py

@@ -15,16 +15,12 @@
 
 import logging
 
-import simplejson as json
-from canonicaljson import encode_canonical_json
 from twisted.internet import defer
 
-from synapse.api.errors import SynapseError, CodeMessageException
+from synapse.api.errors import SynapseError
 from synapse.http.servlet import (
     RestServlet, parse_json_object_from_request, parse_integer
 )
-from synapse.types import get_domain_from_id
-from synapse.util.logcontext import preserve_fn, preserve_context_over_deferred
 from ._base import client_v2_patterns
 
 logger = logging.getLogger(__name__)
@@ -64,17 +60,13 @@ class KeyUploadServlet(RestServlet):
             hs (synapse.server.HomeServer): server
         """
         super(KeyUploadServlet, self).__init__()
-        self.store = hs.get_datastore()
-        self.clock = hs.get_clock()
         self.auth = hs.get_auth()
-        self.device_handler = hs.get_device_handler()
+        self.e2e_keys_handler = hs.get_e2e_keys_handler()
 
     @defer.inlineCallbacks
     def on_POST(self, request, device_id):
         requester = yield self.auth.get_user_by_req(request)
-
         user_id = requester.user.to_string()
-
         body = parse_json_object_from_request(request)
 
         if device_id is not None:
@@ -94,47 +86,10 @@ class KeyUploadServlet(RestServlet):
                 "To upload keys, you must pass device_id when authenticating"
             )
 
-        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 %s at %d",
-                device_id, user_id, time_now
+        result = yield self.e2e_keys_handler.upload_keys_for_user(
+            user_id, device_id, body
         )
-            # 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)
-        if one_time_keys:
-            logger.info(
-                "Adding %d one_time_keys for device %r for user %r at %d",
-                len(one_time_keys), device_id, user_id, time_now
-            )
-            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, key_list
-            )
-
-        # the device should have been registered already, but it may have been
-        # deleted due to a race with a DELETE request. Or we may be using an
-        # old access_token without an associated device_id. Either way, we
-        # need to double-check the device is registered to avoid ending up with
-        # keys without a corresponding device.
-        self.device_handler.check_device_registered(user_id, device_id)
-
-        result = yield self.store.count_e2e_one_time_keys(user_id, device_id)
-        defer.returnValue((200, {"one_time_key_counts": result}))
+        defer.returnValue((200, result))
 
 
 class KeyQueryServlet(RestServlet):
@@ -199,7 +154,7 @@ class KeyQueryServlet(RestServlet):
         timeout = parse_integer(request, "timeout", 10 * 1000)
         body = parse_json_object_from_request(request)
         result = yield self.e2e_keys_handler.query_devices(body, timeout)
-        defer.returnValue(result)
+        defer.returnValue((200, result))
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id, device_id):
@@ -212,7 +167,7 @@ class KeyQueryServlet(RestServlet):
             {"device_keys": {user_id: device_ids}},
             timeout,
         )
-        defer.returnValue(result)
+        defer.returnValue((200, result))
 
 
 class OneTimeKeyServlet(RestServlet):
@@ -244,80 +199,29 @@ class OneTimeKeyServlet(RestServlet):
 
     def __init__(self, hs):
         super(OneTimeKeyServlet, self).__init__()
-        self.store = hs.get_datastore()
         self.auth = hs.get_auth()
-        self.clock = hs.get_clock()
-        self.federation = hs.get_replication_layer()
-        self.is_mine_id = hs.is_mine_id
+        self.e2e_keys_handler = hs.get_e2e_keys_handler()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id, device_id, algorithm):
         yield self.auth.get_user_by_req(request)
         timeout = parse_integer(request, "timeout", 10 * 1000)
-        result = yield self.handle_request(
+        result = yield self.e2e_keys_handler.claim_one_time_keys(
             {"one_time_keys": {user_id: {device_id: algorithm}}},
             timeout,
         )
-        defer.returnValue(result)
+        defer.returnValue((200, result))
 
     @defer.inlineCallbacks
     def on_POST(self, request, user_id, device_id, algorithm):
         yield self.auth.get_user_by_req(request)
         timeout = parse_integer(request, "timeout", 10 * 1000)
         body = parse_json_object_from_request(request)
-        result = yield self.handle_request(body, timeout)
-        defer.returnValue(result)
-
-    @defer.inlineCallbacks
-    def handle_request(self, body, timeout):
-        local_query = []
-        remote_queries = {}
-
-        for user_id, device_keys in body.get("one_time_keys", {}).items():
-            if self.is_mine_id(user_id):
-                for device_id, algorithm in device_keys.items():
-                    local_query.append((user_id, device_id, algorithm))
-            else:
-                domain = get_domain_from_id(user_id)
-                remote_queries.setdefault(domain, {})[user_id] = device_keys
-
-        results = yield self.store.claim_e2e_one_time_keys(local_query)
-
-        json_result = {}
-        failures = {}
-        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)
-                    }
-
-        @defer.inlineCallbacks
-        def claim_client_keys(destination):
-            device_keys = remote_queries[destination]
-            try:
-                remote_result = yield self.federation.claim_client_keys(
-                    destination,
-                    {"one_time_keys": device_keys},
-                    timeout=timeout
+        result = yield self.e2e_keys_handler.claim_one_time_keys(
+            body,
+            timeout,
         )
-                for user_id, keys in remote_result["one_time_keys"].items():
-                    if user_id in device_keys:
-                        json_result[user_id] = keys
-            except CodeMessageException as e:
-                failures[destination] = {
-                    "status": e.code, "message": e.message
-                }
-
-        yield preserve_context_over_deferred(defer.gatherResults([
-            preserve_fn(claim_client_keys)(destination)
-            for destination in remote_queries
-        ]))
-
-        defer.returnValue((200, {
-            "one_time_keys": json_result,
-            "failures": failures
-        }))
+        defer.returnValue((200, result))
 
 
 def register_servlets(hs, http_server):