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Baptiste Assmann325137d2015-04-13 23:40:55 +02001/*
2 * include/proto/dns.h
3 * This file provides functions related to DNS protocol
4 *
5 * Copyright (C) 2014 Baptiste Assmann <bedis9@gmail.com>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation, version 2.1
10 * exclusively.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#ifndef _PROTO_DNS_H
23#define _PROTO_DNS_H
24
25#include <types/dns.h>
26#include <types/proto_udp.h>
27
Willy Tarreau2100b492015-07-22 16:42:43 +020028char *dns_str_to_dn_label(const char *string, char *dn, int dn_len);
Baptiste Assmann325137d2015-04-13 23:40:55 +020029int dns_str_to_dn_label_len(const char *string);
30int dns_hostname_validation(const char *string, char **err);
31int dns_build_query(int query_id, int query_type, char *hostname_dn, int hostname_dn_len, char *buf, int bufsize);
32struct task *dns_process_resolve(struct task *t);
33int dns_init_resolvers(void);
34uint16_t dns_rnd16(void);
35int dns_validate_dns_response(unsigned char *resp, unsigned char *bufend, char *dn_name, int dn_name_len);
36int dns_get_ip_from_response(unsigned char *resp, unsigned char *resp_end,
Thierry Fournierada34842016-02-17 21:25:09 +010037 struct dns_resolution *resol, void *currentip,
38 short currentip_sin_family,
Baptiste Assmann325137d2015-04-13 23:40:55 +020039 void **newip, short *newip_sin_family);
40void dns_resolve_send(struct dgram_conn *dgram);
41void dns_resolve_recv(struct dgram_conn *dgram);
42int dns_send_query(struct dns_resolution *resolution);
43void dns_print_current_resolutions(struct dns_resolvers *resolvers);
44void dns_update_resolvers_timeout(struct dns_resolvers *resolvers);
45void dns_reset_resolution(struct dns_resolution *resolution);
46int dns_check_resolution_queue(struct dns_resolvers *resolvers);
Thiago Farinab1af23e2016-01-20 23:46:34 +010047unsigned short dns_response_get_query_id(unsigned char *resp);
Baptiste Assmann325137d2015-04-13 23:40:55 +020048
49#endif // _PROTO_DNS_H