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- /* Copyright (c) 2001 Matej Pfajfar.
- * Copyright (c) 2001-2004, Roger Dingledine.
- * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
- * Copyright (c) 2007-2019, The Tor Project, Inc. */
- /* See LICENSE for licensing information */
- #ifndef OR_HANDSHAKE_STATE_ST
- #define OR_HANDSHAKE_STATE_ST
- /** Stores flags and information related to the portion of a v2/v3 Tor OR
- * connection handshake that happens after the TLS handshake is finished.
- */
- struct or_handshake_state_t {
- /** When was the VERSIONS cell sent on this connection? Used to get
- * an estimate of the skew in the returning NETINFO reply. */
- time_t sent_versions_at;
- /** True iff we originated this connection */
- unsigned int started_here : 1;
- /** True iff we have received and processed a VERSIONS cell. */
- unsigned int received_versions : 1;
- /** True iff we have received and processed an AUTH_CHALLENGE cell */
- unsigned int received_auth_challenge : 1;
- /** True iff we have received and processed a CERTS cell. */
- unsigned int received_certs_cell : 1;
- /** True iff we have received and processed an AUTHENTICATE cell */
- unsigned int received_authenticate : 1;
- /* True iff we've received valid authentication to some identity. */
- unsigned int authenticated : 1;
- unsigned int authenticated_rsa : 1;
- unsigned int authenticated_ed25519 : 1;
- /* True iff we have sent a netinfo cell */
- unsigned int sent_netinfo : 1;
- /** The signing->ed25519 link certificate corresponding to the x509
- * certificate we used on the TLS connection (if this is a server-side
- * connection). We make a copy of this here to prevent a race condition
- * caused by TLS context rotation. */
- struct tor_cert_st *own_link_cert;
- /** True iff we should feed outgoing cells into digest_sent and
- * digest_received respectively.
- *
- * From the server's side of the v3 handshake, we want to capture everything
- * from the VERSIONS cell through and including the AUTH_CHALLENGE cell.
- * From the client's, we want to capture everything from the VERSIONS cell
- * through but *not* including the AUTHENTICATE cell.
- *
- * @{ */
- unsigned int digest_sent_data : 1;
- unsigned int digest_received_data : 1;
- /**@}*/
- /** Identity RSA digest that we have received and authenticated for our peer
- * on this connection. */
- uint8_t authenticated_rsa_peer_id[DIGEST_LEN];
- /** Identity Ed25519 public key that we have received and authenticated for
- * our peer on this connection. */
- ed25519_public_key_t authenticated_ed25519_peer_id;
- /** Digests of the cells that we have sent or received as part of a V3
- * handshake. Used for making and checking AUTHENTICATE cells.
- *
- * @{
- */
- crypto_digest_t *digest_sent;
- crypto_digest_t *digest_received;
- /** @} */
- /** Certificates that a connection initiator sent us in a CERTS cell; we're
- * holding on to them until we get an AUTHENTICATE cell.
- */
- or_handshake_certs_t *certs;
- };
- #endif
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