12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576 |
- /* Copyright (c) 2001 Matej Pfajfar.
- * Copyright (c) 2001-2004, Roger Dingledine.
- * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
- * Copyright (c) 2007-2018, The Tor Project, Inc. */
- /* See LICENSE for licensing information */
- #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
|