Handle connections from nodes using MeshLink-tiny.

[meshlink] / src / protocol.h

diff --git a/src/protocol.h b/src/protocol.h
index 794b0515dec1205cff55d5408d6be127c952d7d3..05c2203bf70bc791bbb8657e3090191a8aa55e81 100644 (file)
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -36,7 +36,7 @@
 /* Request numbers */
 
 typedef enum request_t {
-       ALL = -1,                                       /* Guardian for allow_request */
+       ALL = -1, /* Guardian for allow_request */
        ID = 0, METAKEY, CHALLENGE, CHAL_REPLY, ACK,
        STATUS, ERROR, TERMREQ,
        PING, PONG,
@@ -44,18 +44,28 @@ typedef enum request_t {
        ADD_EDGE, DEL_EDGE,
        KEY_CHANGED, REQ_KEY, ANS_KEY,
        PACKET,
-       /* Tinc 1.1 requests */
+       /* Extended requests */
        CONTROL,
        REQ_PUBKEY, ANS_PUBKEY,
        REQ_SPTPS,
-       LAST                                            /* Guardian for the highest request number */
+       REQ_CANONICAL,
+       NUM_REQUESTS
 } request_t;
 
+typedef enum request_error_t {
+       NONE = 0,
+       BLACKLISTED = 1,
+} request_error_t;
+
 typedef struct past_request_t {
        const char *request;
        time_t firstseen;
 } past_request_t;
 
+/* Protocol support flags */
+
+static const uint32_t PROTOCOL_TINY = 1; // Peer is using meshlink-tiny
+
 /* Maximum size of strings in a request.
  * scanf terminates %2048s with a NUL character,
  * but the NUL character can be written after the 2048th non-NUL character.
@@ -83,11 +93,13 @@ bool seen_request(struct meshlink_handle *mesh, const char *);
 
 bool send_id(struct meshlink_handle *mesh, struct connection_t *);
 bool send_ack(struct meshlink_handle *mesh, struct connection_t *);
+bool send_error(struct meshlink_handle *mesh, struct connection_t *, request_error_t, const char *);
 bool send_ping(struct meshlink_handle *mesh, struct connection_t *);
 bool send_pong(struct meshlink_handle *mesh, struct connection_t *);
 bool send_add_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *, int contradictions);
 bool send_del_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *, int contradictions);
 bool send_req_key(struct meshlink_handle *mesh, struct node_t *);
+bool send_canonical_address(struct meshlink_handle *mesh, struct node_t *);
 
 /* Request handlers  */