Allow clients to upload one-time-keys with new sigs

When a client retries a key upload, don't give an error if the signature has
changed (but the key is the same).

Fixes https://github.com/vector-im/riot-android/issues/1208, hopefully.

1 files changed, 98 insertions, 0 deletions

diff --git a/tests/handlers/test_e2e_keys.py b/tests/handlers/test_e2e_keys.py

index 878a54dc34..f10a80a8e1 100644
--- a/tests/handlers/test_e2e_keys.py
+++ b/tests/handlers/test_e2e_keys.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 import mock
+from synapse.api import errors
 from twisted.internet import defer
 
 import synapse.api.errors
@@ -44,3 +45,100 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
         local_user = "@boris:" + self.hs.hostname
         res = yield self.handler.query_local_devices({local_user: None})
         self.assertDictEqual(res, {local_user: {}})
+
+    @defer.inlineCallbacks
+    def test_reupload_one_time_keys(self):
+        """we should be able to re-upload the same keys"""
+        local_user = "@boris:" + self.hs.hostname
+        device_id = "xyz"
+        keys = {
+            "alg1:k1": "key1",
+            "alg2:k2": {
+                "key": "key2",
+                "signatures": {"k1": "sig1"}
+            },
+            "alg2:k3": {
+                "key": "key3",
+            },
+        }
+
+        res = yield self.handler.upload_keys_for_user(
+            local_user, device_id, {"one_time_keys": keys},
+        )
+        self.assertDictEqual(res, {
+            "one_time_key_counts": {"alg1": 1, "alg2": 2}
+        })
+
+        # we should be able to change the signature without a problem
+        keys["alg2:k2"]["signatures"]["k1"] = "sig2"
+        res = yield self.handler.upload_keys_for_user(
+            local_user, device_id, {"one_time_keys": keys},
+        )
+        self.assertDictEqual(res, {
+            "one_time_key_counts": {"alg1": 1, "alg2": 2}
+        })
+
+    @defer.inlineCallbacks
+    def test_change_one_time_keys(self):
+        """attempts to change one-time-keys should be rejected"""
+
+        local_user = "@boris:" + self.hs.hostname
+        device_id = "xyz"
+        keys = {
+            "alg1:k1": "key1",
+            "alg2:k2": {
+                "key": "key2",
+                "signatures": {"k1": "sig1"}
+            },
+            "alg2:k3": {
+                "key": "key3",
+            },
+        }
+
+        res = yield self.handler.upload_keys_for_user(
+            local_user, device_id, {"one_time_keys": keys},
+        )
+        self.assertDictEqual(res, {
+            "one_time_key_counts": {"alg1": 1, "alg2": 2}
+        })
+
+        try:
+            yield self.handler.upload_keys_for_user(
+                local_user, device_id, {"one_time_keys": {"alg1:k1": "key2"}},
+            )
+            self.fail("No error when changing string key")
+        except errors.SynapseError:
+            pass
+
+        try:
+            yield self.handler.upload_keys_for_user(
+                local_user, device_id, {"one_time_keys": {"alg2:k3": "key2"}},
+            )
+            self.fail("No error when replacing dict key with string")
+        except errors.SynapseError:
+            pass
+
+        try:
+            yield self.handler.upload_keys_for_user(
+                local_user, device_id, {
+                    "one_time_keys": {"alg1:k1": {"key": "key"}}
+                },
+            )
+            self.fail("No error when replacing string key with dict")
+        except errors.SynapseError:
+            pass
+
+        try:
+            yield self.handler.upload_keys_for_user(
+                local_user, device_id, {
+                    "one_time_keys": {
+                        "alg2:k2": {
+                            "key": "key3",
+                            "signatures": {"k1": "sig1"},
+                        }
+                    },
+                },
+            )
+            self.fail("No error when replacing dict key")
+        except errors.SynapseError:
+            pass