2 * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License version 2.1
6 * as published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
19 #define FLAG_RESPONSE 0x8000
20 #define FLAG_AUTHORATIVE 0x0400
23 #define TYPE_PTR 0x000C
24 #define TYPE_TXT 0x0010
25 #define TYPE_AAAA 0x001c
26 #define TYPE_SRV 0x0021
27 #define TYPE_ANY 0x00ff
29 #define IS_COMPRESSED(x) ((x & 0xc0) == 0xc0)
31 #define MCAST_ADDR "224.0.0.251"
32 #define MCAST_ADDR6 "ff02::fb"
33 #define MCAST_PORT 5353
35 #define CLASS_FLUSH 0x8000
36 #define CLASS_IN 0x0001
38 #define MAX_NAME_LEN 8096
39 #define MAX_DATA_LEN 8096
41 #define C_DNS_SD "_services._dns-sd._udp.local"
56 } __attribute__((packed, aligned(2)));
63 } __attribute__((packed, aligned(2)));
68 } __attribute__((packed, aligned(2)));
72 void dns_send_question(struct interface *iface, const char *question, int type);
73 void dns_init_answer(void);
74 void dns_add_answer(int type, const uint8_t *rdata, uint16_t rdlength);
75 void dns_send_answer(struct interface *iface, const char *answer);
76 const char* dns_type_string(uint16_t type);
77 void dns_handle_packet(struct interface *iface, uint8_t *buf, int len);