hs-v2: Removal of service and relay support

This is unfortunately massive but both functionalities were extremely
intertwined and it would have required us to actually change the HSv2 code in
order to be able to split this into multiple commits.

After this commit, there are still artefacts of v2 in the code but there is no
more support for service, intro point and HSDir.

The v2 support for rendezvous circuit is still available since that code is
the same for the v3 and we will leave it in so if a client is able to
rendezvous on v2 then it can still transfer traffic. Once the entire network
has moved away from v2, we can remove v2 rendezvous point support.

Related to #40266

Signed-off-by: David Goulet <dgoulet@torproject.org>

1 files changed, 0 insertions, 81 deletions

diff --git a/src/feature/rend/rend_intro_point_st.h b/src/feature/rend/rend_intro_point_st.h
deleted file mode 100644
index 4f0aa01523..0000000000
--- a/src/feature/rend/rend_intro_point_st.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/* Copyright (c) 2001 Matej Pfajfar.
- * Copyright (c) 2001-2004, Roger Dingledine.
- * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
- * Copyright (c) 2007-2020, The Tor Project, Inc. */
-/* See LICENSE for licensing information */
-
-/**
- * @file rend_intro_point_st.h
- * @brief v2 hidden service introduction point structure.
- **/
-
-#ifndef REND_INTRO_POINT_ST_H
-#define REND_INTRO_POINT_ST_H
-
-struct replaycache_t;
-struct crypto_pk_t;
-
-/** Introduction point information.  Used both in rend_service_t (on
- * the service side) and in rend_service_descriptor_t (on both the
- * client and service side). */
-struct rend_intro_point_t {
-  extend_info_t *extend_info; /**< Extend info for connecting to this
-                               * introduction point via a multi-hop path. */
-  struct crypto_pk_t *intro_key; /**< Introduction key that replaces the
-                                  * service key, if this descriptor is V2. */
-
-  /** (Client side only) Flag indicating that a timeout has occurred
-   * after sending an INTRODUCE cell to this intro point.  After a
-   * timeout, an intro point should not be tried again during the same
-   * hidden service connection attempt, but it may be tried again
-   * during a future connection attempt. */
-  unsigned int timed_out : 1;
-
-  /** (Client side only) The number of times we have failed to build a
-   * circuit to this intro point for some reason other than our
-   * circuit-build timeout.  See also MAX_INTRO_POINT_REACHABILITY_FAILURES. */
-  unsigned int unreachable_count : 3;
-
-  /** (Service side only) Flag indicating that this intro point was
-   * included in the last HS descriptor we generated. */
-  unsigned int listed_in_last_desc : 1;
-
-  /** (Service side only) A replay cache recording the RSA-encrypted parts
-   * of INTRODUCE2 cells this intro point's circuit has received.  This is
-   * used to prevent replay attacks. */
-  struct replaycache_t *accepted_intro_rsa_parts;
-
-  /** (Service side only) Count of INTRODUCE2 cells accepted from this
-   * intro point.
-   */
-  int accepted_introduce2_count;
-
-  /** (Service side only) Maximum number of INTRODUCE2 cells that this IP
-   * will accept. This is a random value between
-   * INTRO_POINT_MIN_LIFETIME_INTRODUCTIONS and
-   * INTRO_POINT_MAX_LIFETIME_INTRODUCTIONS. */
-  int max_introductions;
-
-  /** (Service side only) The time at which this intro point was first
-   * published, or -1 if this intro point has not yet been
-   * published. */
-  time_t time_published;
-
-  /** (Service side only) The time at which this intro point should
-   * (start to) expire, or -1 if we haven't decided when this intro
-   * point should expire. */
-  time_t time_to_expire;
-
-  /** (Service side only) The amount of circuit creation we've made to this
-   * intro point. This is incremented every time we do a circuit relaunch on
-   * this object which is triggered when the circuit dies but the node is
-   * still in the consensus. After MAX_INTRO_POINT_CIRCUIT_RETRIES, we give
-   * up on it. */
-  unsigned int circuit_retries;
-
-  /** (Service side only) Set if this intro point has an established circuit
-   * and unset if it doesn't. */
-  unsigned int circuit_established:1;
-};
-
-#endif /* !defined(REND_INTRO_POINT_ST_H) */