1 files changed, 72 insertions, 0 deletions
diff --git a/src/feature/relay/dns.h b/src/feature/relay/dns.h
new file mode 100644
index 0000000000..1dd6f903d1
--- /dev/null
+++ b/src/feature/relay/dns.h
@@ -0,0 +1,72 @@
+/* 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 */
+
+/**
+ * \file dns.h
+ * \brief Header file for dns.c.
+ **/
+
+#ifndef TOR_DNS_H
+#define TOR_DNS_H
+
+/** Lowest value for DNS ttl that a server will give. */
+#define MIN_DNS_TTL_AT_EXIT (5*60)
+/** Highest value for DNS ttl that a server will give. */
+#define MAX_DNS_TTL_AT_EXIT (60*60)
+
+/** How long do we keep DNS cache entries before purging them (regardless of
+ * their TTL)? */
+#define MAX_DNS_ENTRY_AGE (3*60*60)
+/** How long do we cache/tell clients to cache DNS records when no TTL is
+ * known? */
+#define DEFAULT_DNS_TTL (30*60)
+
+int dns_init(void);
+int has_dns_init_failed(void);
+void dns_free_all(void);
+uint32_t dns_clip_ttl(uint32_t ttl);
+int dns_reset(void);
+void connection_dns_remove(edge_connection_t *conn);
+void assert_connection_edge_not_dns_pending(edge_connection_t *conn);
+void assert_all_pending_dns_resolves_ok(void);
+MOCK_DECL(void,dns_cancel_pending_resolve,(const char *question));
+int dns_resolve(edge_connection_t *exitconn);
+void dns_launch_correctness_checks(void);
+int dns_seems_to_be_broken(void);
+int dns_seems_to_be_broken_for_ipv6(void);
+void dns_reset_correctness_checks(void);
+size_t dns_cache_total_allocation(void);
+void dump_dns_mem_usage(int severity);
+size_t dns_cache_handle_oom(time_t now, size_t min_remove_bytes);
+
+#ifdef DNS_PRIVATE
+#include "feature/relay/dns_structs.h"
+
+MOCK_DECL(STATIC int,dns_resolve_impl,(edge_connection_t *exitconn,
+int is_resolve,or_circuit_t *oncirc, char **hostname_out,
+int *made_connection_pending_out, cached_resolve_t **resolve_out));
+
+MOCK_DECL(STATIC void,send_resolved_cell,(edge_connection_t *conn,
+uint8_t answer_type,const cached_resolve_t *resolved));
+
+MOCK_DECL(STATIC void,send_resolved_hostname_cell,(edge_connection_t *conn,
+const char *hostname));
+
+cached_resolve_t *dns_get_cache_entry(cached_resolve_t *query);
+void dns_insert_cache_entry(cached_resolve_t *new_entry);
+
+MOCK_DECL(STATIC int,
+set_exitconn_info_from_resolve,(edge_connection_t *exitconn,
+                                const cached_resolve_t *resolve,
+                                char **hostname_out));
+
+MOCK_DECL(STATIC int,
+launch_resolve,(cached_resolve_t *resolve));
+
+#endif /* defined(DNS_PRIVATE) */
+
+#endif /* !defined(TOR_DNS_H) */
+