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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) 2007-2016, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file nodelist.h
* \brief Header file for nodelist.c.
**/
#ifndef TOR_NODELIST_H
#define TOR_NODELIST_H
#define node_assert_ok(n) STMT_BEGIN { \
tor_assert((n)->ri || (n)->rs); \
} STMT_END
node_t *node_get_mutable_by_id(const char *identity_digest);
MOCK_DECL(const node_t *, node_get_by_id, (const char *identity_digest));
const node_t *node_get_by_hex_id(const char *identity_digest);
node_t *nodelist_set_routerinfo(routerinfo_t *ri, routerinfo_t **ri_old_out);
node_t *nodelist_add_microdesc(microdesc_t *md);
void nodelist_set_consensus(networkstatus_t *ns);
void nodelist_remove_microdesc(const char *identity_digest, microdesc_t *md);
void nodelist_remove_routerinfo(routerinfo_t *ri);
void nodelist_purge(void);
smartlist_t *nodelist_find_nodes_with_microdesc(const microdesc_t *md);
void nodelist_free_all(void);
void nodelist_assert_ok(void);
MOCK_DECL(const node_t *, node_get_by_nickname,
(const char *nickname, int warn_if_unnamed));
void node_get_verbose_nickname(const node_t *node,
char *verbose_name_out);
void node_get_verbose_nickname_by_id(const char *id_digest,
char *verbose_name_out);
int node_is_named(const node_t *node);
int node_is_dir(const node_t *node);
int node_has_descriptor(const node_t *node);
int node_get_purpose(const node_t *node);
#define node_is_bridge(node) \
(node_get_purpose((node)) == ROUTER_PURPOSE_BRIDGE)
int node_is_me(const node_t *node);
int node_exit_policy_rejects_all(const node_t *node);
int node_exit_policy_is_exact(const node_t *node, sa_family_t family);
smartlist_t *node_get_all_orports(const node_t *node);
int node_allows_single_hop_exits(const node_t *node);
const char *node_get_nickname(const node_t *node);
const char *node_get_platform(const node_t *node);
uint32_t node_get_prim_addr_ipv4h(const node_t *node);
void node_get_address_string(const node_t *node, char *cp, size_t len);
long node_get_declared_uptime(const node_t *node);
time_t node_get_published_on(const node_t *node);
const smartlist_t *node_get_declared_family(const node_t *node);
int node_has_ipv6_addr(const node_t *node);
int node_has_ipv6_orport(const node_t *node);
int node_has_ipv6_dirport(const node_t *node);
/* Deprecated - use node_ipv6_or_preferred or node_ipv6_dir_preferred */
#define node_ipv6_preferred(node) node_ipv6_or_preferred(node)
int node_ipv6_or_preferred(const node_t *node);
int node_get_prim_orport(const node_t *node, tor_addr_port_t *ap_out);
void node_get_pref_orport(const node_t *node, tor_addr_port_t *ap_out);
void node_get_pref_ipv6_orport(const node_t *node, tor_addr_port_t *ap_out);
int node_ipv6_dir_preferred(const node_t *node);
int node_get_prim_dirport(const node_t *node, tor_addr_port_t *ap_out);
void node_get_pref_dirport(const node_t *node, tor_addr_port_t *ap_out);
void node_get_pref_ipv6_dirport(const node_t *node, tor_addr_port_t *ap_out);
int node_has_curve25519_onion_key(const node_t *node);
MOCK_DECL(smartlist_t *, nodelist_get_list, (void));
/* Temporary during transition to multiple addresses. */
void node_get_addr(const node_t *node, tor_addr_t *addr_out);
#define node_get_addr_ipv4h(n) node_get_prim_addr_ipv4h((n))
void nodelist_refresh_countries(void);
void node_set_country(node_t *node);
void nodelist_add_node_and_family(smartlist_t *nodes, const node_t *node);
int nodes_in_same_family(const node_t *node1, const node_t *node2);
const node_t *router_find_exact_exit_enclave(const char *address,
uint16_t port);
int node_is_unreliable(const node_t *router, int need_uptime,
int need_capacity, int need_guard);
int router_exit_policy_all_nodes_reject(const tor_addr_t *addr, uint16_t port,
int need_uptime);
void router_set_status(const char *digest, int up);
/** router_have_minimum_dir_info tests to see if we have enough
* descriptor information to create circuits.
* If there are exits in the consensus, we wait until we have enough
* info to create exit paths before creating any circuits. If there are
* no exits in the consensus, we wait for enough info to create internal
* paths, and should avoid creating exit paths, as they will simply fail.
* We make sure we create all available circuit types at the same time. */
int router_have_minimum_dir_info(void);
/** Set to CONSENSUS_PATH_EXIT if there is at least one exit node
* in the consensus. We update this flag in compute_frac_paths_available if
* there is at least one relay that has an Exit flag in the consensus.
* Used to avoid building exit circuits when they will almost certainly fail.
* Set to CONSENSUS_PATH_INTERNAL if there are no exits in the consensus.
* (This situation typically occurs during bootstrap of a test network.)
* Set to CONSENSUS_PATH_UNKNOWN if we have never checked, or have
* reason to believe our last known value was invalid or has expired.
*/
typedef enum {
/* we haven't checked yet, or we have invalidated our previous check */
CONSENSUS_PATH_UNKNOWN = -1,
/* The consensus only has internal relays, and we should only
* create internal paths, circuits, streams, ... */
CONSENSUS_PATH_INTERNAL = 0,
/* The consensus has at least one exit, and can therefore (potentially)
* create exit and internal paths, circuits, streams, ... */
CONSENSUS_PATH_EXIT = 1
} consensus_path_type_t;
consensus_path_type_t router_have_consensus_path(void);
void router_dir_info_changed(void);
const char *get_dir_info_status_string(void);
int count_loading_descriptors_progress(void);
#endif
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