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105 lines
3.0 KiB
C
105 lines
3.0 KiB
C
/* Copyright (c) 2001 Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2020, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file dns.h
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* \brief Header file for dns.c.
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**/
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#ifndef TOR_DNS_H
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#define TOR_DNS_H
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#ifdef HAVE_MODULE_RELAY
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int dns_init(void);
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int has_dns_init_failed(void);
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int dns_reset(void);
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void connection_dns_remove(edge_connection_t *conn);
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void assert_connection_edge_not_dns_pending(edge_connection_t *conn);
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int dns_resolve(edge_connection_t *exitconn);
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int dns_seems_to_be_broken(void);
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int dns_seems_to_be_broken_for_ipv6(void);
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void dns_reset_correctness_checks(void);
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size_t dns_cache_total_allocation(void);
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void dump_dns_mem_usage(int severity);
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size_t dns_cache_handle_oom(time_t now, size_t min_remove_bytes);
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/* These functions are only used within the feature/relay module, and don't
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* need stubs. */
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void dns_free_all(void);
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void dns_launch_correctness_checks(void);
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#else /* !defined(HAVE_MODULE_RELAY) */
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#define dns_init() (0)
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#define dns_seems_to_be_broken() (0)
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#define has_dns_init_failed() (0)
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#define dns_cache_total_allocation() (0)
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#define dns_reset_correctness_checks() STMT_NIL
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#define assert_connection_edge_not_dns_pending(conn) \
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((void)(conn))
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#define dump_dns_mem_usage(severity)\
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((void)(severity))
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#define dns_cache_handle_oom(now, bytes) \
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((void)(now), (void)(bytes), 0)
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#define connection_dns_remove(conn) \
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STMT_BEGIN \
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(void)(conn); \
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tor_assert_nonfatal_unreached(); \
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STMT_END
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static inline int
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dns_reset(void)
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{
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return 0;
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}
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static inline int
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dns_resolve(edge_connection_t *exitconn)
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{
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(void)exitconn;
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tor_assert_nonfatal_unreached();
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return -1;
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}
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#endif /* defined(HAVE_MODULE_RELAY) */
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#ifdef DNS_PRIVATE
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#include "feature/relay/dns_structs.h"
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size_t number_of_configured_nameservers(void);
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#ifdef HAVE_EVDNS_BASE_GET_NAMESERVER_ADDR
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tor_addr_t *configured_nameserver_address(const size_t idx);
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#endif
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MOCK_DECL(STATIC void,dns_cancel_pending_resolve,(const char *question));
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MOCK_DECL(STATIC int,dns_resolve_impl,(edge_connection_t *exitconn,
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int is_resolve,or_circuit_t *oncirc, char **hostname_out,
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int *made_connection_pending_out, cached_resolve_t **resolve_out));
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MOCK_DECL(STATIC void,send_resolved_cell,(edge_connection_t *conn,
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uint8_t answer_type,const cached_resolve_t *resolved));
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MOCK_DECL(STATIC void,send_resolved_hostname_cell,(edge_connection_t *conn,
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const char *hostname));
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cached_resolve_t *dns_get_cache_entry(cached_resolve_t *query);
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void dns_insert_cache_entry(cached_resolve_t *new_entry);
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MOCK_DECL(STATIC int,
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set_exitconn_info_from_resolve,(edge_connection_t *exitconn,
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const cached_resolve_t *resolve,
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char **hostname_out));
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MOCK_DECL(STATIC int,
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launch_resolve,(cached_resolve_t *resolve));
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#endif /* defined(DNS_PRIVATE) */
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#endif /* !defined(TOR_DNS_H) */
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