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Fix OTK upload spam (#2448)

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* Fix OTK spam

* Update comment

* Optimize selectKeysCountSQL to only return max 100 keys

* Return CurrentPosition if the request timed out

* Revert "Return CurrentPosition if the request timed out"

This reverts commit 7dbdda964189f5542048c06ce5ffc6d4da1814e6.

Co-authored-by: kegsay <kegan@matrix.org>
This commit is contained in:
Till 2022-05-11 18:15:18 +02:00 committed by GitHub
parent 24f7be968d
commit 58af7f61b6
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3 changed files with 14 additions and 2 deletions
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4
keyserver/storage/postgres/one_time_keys_table.go
View file

@ -53,7 +53,9 @@ const selectKeysSQL = "" +
"SELECT concat(algorithm, ':', key_id) as algorithmwithid, key_json FROM keyserver_one_time_keys WHERE user_id=$1 AND device_id=$2 AND concat(algorithm, ':', key_id) = ANY($3);"
const selectKeysCountSQL = "" +
"SELECT algorithm, COUNT(key_id) FROM keyserver_one_time_keys WHERE user_id=$1 AND device_id=$2 GROUP BY algorithm"
"SELECT algorithm, COUNT(key_id) FROM " +
" (SELECT algorithm, key_id FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 LIMIT 100)" +
" x GROUP BY algorithm"
const deleteOneTimeKeySQL = "" +
"DELETE FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 AND algorithm = $3 AND key_id = $4"

4
keyserver/storage/sqlite3/one_time_keys_table.go
View file

@ -52,7 +52,9 @@ const selectKeysSQL = "" +
"SELECT key_id, algorithm, key_json FROM keyserver_one_time_keys WHERE user_id=$1 AND device_id=$2"
const selectKeysCountSQL = "" +
"SELECT algorithm, COUNT(key_id) FROM keyserver_one_time_keys WHERE user_id=$1 AND device_id=$2 GROUP BY algorithm"
"SELECT algorithm, COUNT(key_id) FROM " +
" (SELECT algorithm, key_id FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 LIMIT 100)" +
" x GROUP BY algorithm"
const deleteOneTimeKeySQL = "" +
"DELETE FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 AND algorithm = $3 AND key_id = $4"

8
syncapi/sync/requestpool.go
View file

@ -248,7 +248,15 @@ func (rp *RequestPool) OnIncomingSyncRequest(req *http.Request, device *userapi.
defer userStreamListener.Close()
giveup := func() util.JSONResponse {
syncReq.Log.Debugln("Responding to sync since client gave up or timeout was reached")
syncReq.Response.NextBatch = syncReq.Since
// We should always try to include OTKs in sync responses, otherwise clients might upload keys
// even if that's not required. See also:
// https://github.com/matrix-org/synapse/blob/29f06704b8871a44926f7c99e73cf4a978fb8e81/synapse/rest/client/sync.py#L276-L281
err = internal.DeviceOTKCounts(syncReq.Context, rp.keyAPI, syncReq.Device.UserID, syncReq.Device.ID, syncReq.Response)
if err != nil {
syncReq.Log.WithError(err).Error("failed to get OTK counts")
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: syncReq.Response,