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-rw-r--r--synapse/handlers/e2e_keys.py11
-rw-r--r--synapse/storage/end_to_end_keys.py60
-rw-r--r--tests/storage/test_end_to_end_keys.py90
3 files changed, 141 insertions, 20 deletions
diff --git a/synapse/handlers/e2e_keys.py b/synapse/handlers/e2e_keys.py
index 950fc927b1..bb69089b91 100644
--- a/synapse/handlers/e2e_keys.py
+++ b/synapse/handlers/e2e_keys.py
@@ -117,10 +117,15 @@ class E2eKeysHandler(object):
 
         results = yield self.store.get_e2e_device_keys(local_query)
 
-        # un-jsonify the results
+        # Build the result structure, un-jsonify the results, and add the
+        # "unsigned" section
         for user_id, device_keys in results.items():
-            for device_id, json_bytes in device_keys.items():
-                result_dict[user_id][device_id] = json.loads(json_bytes)
+            for device_id, device_info in device_keys.items():
+                r = json.loads(device_info["key_json"])
+                r["unsigned"] = {
+                    "device_display_name": device_info["device_display_name"],
+                }
+                result_dict[user_id][device_id] = r
 
         defer.returnValue(result_dict)
 
diff --git a/synapse/storage/end_to_end_keys.py b/synapse/storage/end_to_end_keys.py
index 62b7790e91..385d607056 100644
--- a/synapse/storage/end_to_end_keys.py
+++ b/synapse/storage/end_to_end_keys.py
@@ -12,6 +12,7 @@
 # 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.
+import collections
 
 import twisted.internet.defer
 
@@ -38,24 +39,49 @@ class EndToEndKeyStore(SQLBaseStore):
             query_list(list): List of pairs of user_ids and device_ids.
         Returns:
             Dict mapping from user-id to dict mapping from device_id to
-            key json byte strings.
+            dict containing "key_json", "device_display_name".
         """
-        def _get_e2e_device_keys(txn):
-            result = {}
-            for user_id, device_id in query_list:
-                user_result = result.setdefault(user_id, {})
-                keyvalues = {"user_id": user_id}
-                if device_id:
-                    keyvalues["device_id"] = device_id
-                rows = self._simple_select_list_txn(
-                    txn, table="e2e_device_keys_json",
-                    keyvalues=keyvalues,
-                    retcols=["device_id", "key_json"]
-                )
-                for row in rows:
-                    user_result[row["device_id"]] = row["key_json"]
-            return result
-        return self.runInteraction("get_e2e_device_keys", _get_e2e_device_keys)
+        if not query_list:
+            return {}
+
+        return self.runInteraction(
+            "get_e2e_device_keys", self._get_e2e_device_keys_txn, query_list
+        )
+
+    def _get_e2e_device_keys_txn(self, txn, query_list):
+        query_clauses = []
+        query_params = []
+
+        for (user_id, device_id) in query_list:
+            query_clause = "k.user_id = ?"
+            query_params.append(user_id)
+
+            if device_id:
+                query_clause += " AND k.device_id = ?"
+                query_params.append(device_id)
+
+            query_clauses.append(query_clause)
+
+        sql = (
+            "SELECT k.user_id, k.device_id, "
+            "    d.display_name AS device_display_name, "
+            "    k.key_json"
+            " FROM e2e_device_keys_json k"
+            "    LEFT JOIN devices d ON d.user_id = k.user_id"
+            "      AND d.device_id = k.device_id"
+            " WHERE %s"
+        ) % (
+            " OR ".join("(" + q + ")" for q in query_clauses)
+        )
+
+        txn.execute(sql, query_params)
+        rows = self.cursor_to_dict(txn)
+
+        result = collections.defaultdict(dict)
+        for row in rows:
+            result[row["user_id"]][row["device_id"]] = row
+
+        return result
 
     def add_e2e_one_time_keys(self, user_id, device_id, time_now, key_list):
         def _add_e2e_one_time_keys(txn):
diff --git a/tests/storage/test_end_to_end_keys.py b/tests/storage/test_end_to_end_keys.py
new file mode 100644
index 0000000000..453bc61438
--- /dev/null
+++ b/tests/storage/test_end_to_end_keys.py
@@ -0,0 +1,90 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 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
+
+import tests.unittest
+import tests.utils
+
+
+class EndToEndKeyStoreTestCase(tests.unittest.TestCase):
+    def __init__(self, *args, **kwargs):
+        super(EndToEndKeyStoreTestCase, self).__init__(*args, **kwargs)
+        self.store = None  # type: synapse.storage.DataStore
+
+    @defer.inlineCallbacks
+    def setUp(self):
+        hs = yield tests.utils.setup_test_homeserver()
+
+        self.store = hs.get_datastore()
+
+    @defer.inlineCallbacks
+    def test_key_without_device_name(self):
+        now = 1470174257070
+        json = '{ "key": "value" }'
+
+        yield self.store.set_e2e_device_keys(
+            "user", "device", now, json)
+
+        res = yield self.store.get_e2e_device_keys((("user", "device"),))
+        self.assertIn("user", res)
+        self.assertIn("device", res["user"])
+        dev = res["user"]["device"]
+        self.assertDictContainsSubset({
+            "key_json": json,
+            "device_display_name": None,
+        }, dev)
+
+    @defer.inlineCallbacks
+    def test_get_key_with_device_name(self):
+        now = 1470174257070
+        json = '{ "key": "value" }'
+
+        yield self.store.set_e2e_device_keys(
+            "user", "device", now, json)
+        yield self.store.store_device(
+            "user", "device", "display_name"
+        )
+
+        res = yield self.store.get_e2e_device_keys((("user", "device"),))
+        self.assertIn("user", res)
+        self.assertIn("device", res["user"])
+        dev = res["user"]["device"]
+        self.assertDictContainsSubset({
+            "key_json": json,
+            "device_display_name": "display_name",
+        }, dev)
+
+    @defer.inlineCallbacks
+    def test_multiple_devices(self):
+        now = 1470174257070
+
+        yield self.store.set_e2e_device_keys(
+            "user1", "device1", now, 'json11')
+        yield self.store.set_e2e_device_keys(
+            "user1", "device2", now, 'json12')
+        yield self.store.set_e2e_device_keys(
+            "user2", "device1", now, 'json21')
+        yield self.store.set_e2e_device_keys(
+            "user2", "device2", now, 'json22')
+
+        res = yield self.store.get_e2e_device_keys((("user1", "device1"),
+                                                    ("user2", "device2")))
+        self.assertIn("user1", res)
+        self.assertIn("device1", res["user1"])
+        self.assertNotIn("device2", res["user1"])
+        self.assertIn("user2", res)
+        self.assertNotIn("device1", res["user2"])
+        self.assertIn("device2", res["user2"])