Expand live synced v4 addresses before feeding them to peer list

1 files changed, 9 insertions, 1 deletions

diff --git a/ot_livesync.c b/ot_livesync.c
index 269b8d8..fbedb73 100644
--- a/ot_livesync.c
+++ b/ot_livesync.c
@@ -136,10 +136,18 @@ static void livesync_issue_peersync(sync_buffer *buf) {
 static void livesync_handle_peersync(struct ot_workstruct *ws, size_t peer_size) {
   size_t off = sizeof(g_tracker_id) + sizeof(uint32_t);
 
+  /* Prepare peer record for v4mapped expansion */
+  if (peer_size == OT_PEER_SIZE4)
+    memcpy(&ws->peer, V4mappedprefix, sizeof(V4mappedprefix));
+
   /* Now basic sanity checks have been done on the live sync packet
      We might add more testing and logging. */
   while ((ssize_t)(off + sizeof(ot_hash) + peer_size) <= ws->request_size) {
-    memcpy(&ws->peer, ws->request + off + sizeof(ot_hash), peer_size);
+    uint8_t *peer_ip = ws->request + off + sizeof(ot_hash);
+    if (peer_size == OT_PEER_SIZE4)
+        memcpy(&ws->peer + sizeof(V4mappedprefix), peer_ip, peer_size);
+    else
+        memcpy(&ws->peer, peer_ip, peer_size);
     ws->hash = (ot_hash *)(ws->request + off);
 
     if (!g_opentracker_running)