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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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