/usr/include/microdns/rr.h is in libmicrodns-dev 0.0.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* This file is part of libmicrodns.
*
* Copyright © 2014-2016 VideoLabs SAS
*
* Author: Jonathan Calmels <jbjcalmels@gmail.com>
*
*****************************************************************************
* libmicrodns is released under LGPLv2.1 (or later) and is also available
* under a commercial license.
*****************************************************************************
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef MICRODNS_RR_H
#define MICRODNS_RR_H
#include <stdint.h>
#if defined (__unix__) || defined (__APPLE__)
# include <arpa/inet.h>
#elif defined(_WIN32)
# include <ws2tcpip.h>
#endif
# ifdef __cplusplus
extern "C" {
# endif
enum rr_type {
RR_A = 0x01,
RR_PTR = 0x0C,
RR_TXT = 0x10,
RR_AAAA = 0x1C,
RR_SRV = 0x21,
};
enum rr_class {
RR_IN = 0x01,
};
struct rr_data_srv {
uint16_t priority;
uint16_t weight;
uint16_t port;
char *target;
};
struct rr_data_txt {
char txt[256]; // RFC 6762
struct rr_data_txt *next;
};
struct rr_data_ptr {
char *domain;
};
struct rr_data_a {
char addr_str[INET_ADDRSTRLEN];
struct in_addr addr;
};
struct rr_data_aaaa {
char addr_str[INET6_ADDRSTRLEN];
struct in6_addr addr;
};
union rr_data {
struct rr_data_srv SRV;
struct rr_data_txt *TXT;
struct rr_data_ptr PTR;
struct rr_data_a A;
struct rr_data_aaaa AAAA;
};
struct rr_entry {
char *name;
uint16_t type;
uint16_t rr_class : 15;
uint16_t msbit : 1; // unicast query | cache flush (RFC 6762)
/* Answers only */
uint32_t ttl;
uint16_t data_len;
union rr_data data;
struct rr_entry *next;
};
# ifdef __cplusplus
}
# endif
#endif /* MICRODNS_RR_H */
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