Handle packets encrypted via SPTPS that need to be forwarded via TCP.

[tinc] / src / net_packet.c

diff --git a/src/net_packet.c b/src/net_packet.c
index 371632f..8439269 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -398,6 +398,7 @@ static void send_sptps_packet(node_t *n, vpn_packet_t *origpkt) {
                        n->status.waitingforkey = false;
                        send_req_key(n);
                }
+               return;
        }
 
        uint8_t type = 0;
@@ -590,13 +591,15 @@ end:
 bool send_sptps_data(void *handle, uint8_t type, const char *data, size_t len) {
        node_t *to = handle;
 
-       if(type >= SPTPS_HANDSHAKE || ((myself->options | to->options) & OPTION_TCPONLY)) {
+       if(type >= SPTPS_HANDSHAKE
+                       || ((myself->options | to->options) & OPTION_TCPONLY)
+                       || (type != PKT_PROBE && len > to->minmtu)) {
                char buf[len * 4 / 3 + 5];
                b64encode(data, buf, len);
                if(!to->status.validkey)
                        return send_request(to->nexthop->connection, "%d %s %s %s -1 -1 -1 %d", ANS_KEY, myself->name, to->name, buf, myself->incompression);
                else
-                       return send_request(to->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, to->name, REQ_SPTPS, buf);
+                       return send_request(to->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, to->name, type >= SPTPS_HANDSHAKE ? REQ_SPTPS : REQ_PACKET, buf);
        }
 
        /* Send the packet */