/contrib/ntp/include/ntp_rfc2553.h

  1/*
  2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  3 * All rights reserved.
  4 *
  5 * Redistribution and use in source and binary forms, with or without
  6 * modification, are permitted provided that the following conditions
  7 * are met:
  8 * 1. Redistributions of source code must retain the above copyright
  9 *    notice, this list of conditions and the following disclaimer.
 10 * 2. Redistributions in binary form must reproduce the above copyright
 11 *    notice, this list of conditions and the following disclaimer in the
 12 *    documentation and/or other materials provided with the distribution.
 13 * 3. Neither the name of the project nor the names of its contributors
 14 *    may be used to endorse or promote products derived from this software
 15 *    without specific prior written permission.
 16 *
 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 27 * SUCH DAMAGE.
 28 */
 29
 30/*
 31 * Copyright (c) 1982, 1986, 1990, 1993
 32 *	The Regents of the University of California.  All rights reserved.
 33 *
 34 * Redistribution and use in source and binary forms, with or without
 35 * modification, are permitted provided that the following conditions
 36 * are met:
 37 * 1. Redistributions of source code must retain the above copyright
 38 *    notice, this list of conditions and the following disclaimer.
 39 * 2. Redistributions in binary form must reproduce the above copyright
 40 *    notice, this list of conditions and the following disclaimer in the
 41 *    documentation and/or other materials provided with the distribution.
 42 * 3. All advertising materials mentioning features or use of this software
 43 *    must display the following acknowledgement:
 44 *	This product includes software developed by the University of
 45 *	California, Berkeley and its contributors.
 46 * 4. Neither the name of the University nor the names of its contributors
 47 *    may be used to endorse or promote products derived from this software
 48 *    without specific prior written permission.
 49 *
 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 53 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 60 * SUCH DAMAGE.
 61 *
 62 *	@(#)in.h	8.3 (Berkeley) 1/3/94
 63 */
 64
 65/*
 66 * Compatability shims with the rfc2553 API to simplify ntp.
 67 */
 68#ifndef _NTP_RFC2553_H_
 69#define _NTP_RFC2553_H_
 70
 71/*
 72 * Ensure that we include the configuration file before we check
 73 * for IPV6
 74 */
 75#include <config.h>
 76
 77#include <netdb.h>
 78
 79#include "ntp_types.h"
 80
 81/*
 82 * Don't include any additional IPv6 definitions
 83 * We are defining our own here.
 84 */
 85#define ISC_IPV6_H 1
 86
 87 /*
 88 * If various macros are not defined we need to define them
 89 */
 90
 91#ifndef AF_INET6
 92#define AF_INET6	AF_MAX
 93#define PF_INET6	AF_INET6
 94#endif
 95
 96#if !defined(_SS_MAXSIZE) && !defined(_SS_ALIGNSIZE)
 97
 98#define	_SS_MAXSIZE	128
 99#define	_SS_ALIGNSIZE	(sizeof(ntp_uint64_t))
100#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
101#define	_SS_PAD1SIZE	(_SS_ALIGNSIZE - sizeof(u_char) - sizeof(ntp_u_int8_t))
102#define	_SS_PAD2SIZE	(_SS_MAXSIZE - sizeof(u_char) - sizeof(ntp_u_int8_t) - \
103				_SS_PAD1SIZE - _SS_ALIGNSIZE)
104#else
105#define	_SS_PAD1SIZE	(_SS_ALIGNSIZE - sizeof(short))
106#define	_SS_PAD2SIZE	(_SS_MAXSIZE - sizeof(short) - \
107				_SS_PAD1SIZE - _SS_ALIGNSIZE)
108#endif /* HAVE_SA_LEN_IN_STRUCT_SOCKADDR */
109#endif
110
111/*
112 * If we don't have the sockaddr_storage structure
113 * we need to define it
114 */
115
116#ifndef HAVE_STRUCT_SOCKADDR_STORAGE
117struct sockaddr_storage {
118#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
119	ntp_u_int8_t	ss_len;		/* address length */
120	ntp_u_int8_t	ss_family;	/* address family */
121#else
122	short		ss_family;	/* address family */
123#endif
124	char		__ss_pad1[_SS_PAD1SIZE];
125	ntp_uint64_t	__ss_align;	/* force desired structure storage alignment */
126	char		__ss_pad2[_SS_PAD2SIZE];
127};
128#endif
129
130/*
131 * Finally if the platform doesn't support IPv6 we need some
132 * additional definitions
133 */
134
135/*
136 * Flag values for getaddrinfo()
137 */
138#ifndef AI_NUMERICHOST
139#define	AI_PASSIVE	0x00000001 /* get address to use bind() */
140#define	AI_CANONNAME	0x00000002 /* fill ai_canonname */
141#define	AI_NUMERICHOST	0x00000004 /* prevent name resolution */
142/* valid flags for addrinfo */
143#define AI_MASK \
144    (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_ADDRCONFIG)
145
146#define	AI_ADDRCONFIG	0x00000400 /* only if any address is assigned */
147#endif
148
149#ifndef ISC_PLATFORM_HAVEIPV6
150/*
151 * Definition of some useful macros to handle IP6 addresses
152 */
153#ifdef ISC_PLATFORM_NEEDIN6ADDRANY
154#ifdef SYS_WINNT
155#define IN6ADDR_ANY_INIT 	{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}
156#else
157#define IN6ADDR_ANY_INIT \
158	{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
159	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
160#endif
161#endif
162
163
164/*
165 * IPv6 address
166 */
167#ifdef SYS_WINNT
168#define in6_addr in_addr6
169#else
170
171struct in6_addr {
172	union {
173		ntp_u_int8_t   __u6_addr8[16];
174		ntp_u_int16_t  __u6_addr16[8];
175		ntp_u_int32_t  __u6_addr32[4];
176	} __u6_addr;			/* 128-bit IP6 address */
177};
178
179#define s6_addr   __u6_addr.__u6_addr8
180#endif
181
182#if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRANY)
183extern const struct in6_addr in6addr_any;
184#endif
185
186#define SIN6_LEN
187#ifndef HAVE_SOCKADDR_IN6
188struct sockaddr_in6 {
189#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
190	ntp_u_int8_t	sin6_len;	/* length of this struct(sa_family_t)*/
191	ntp_u_int8_t	sin6_family;	/* AF_INET6 (sa_family_t) */
192#else
193	short		sin6_family;	/* AF_INET6 (sa_family_t) */
194#endif
195	ntp_u_int16_t	sin6_port;	/* Transport layer port # (in_port_t)*/
196	ntp_u_int32_t	sin6_flowinfo;	/* IP6 flow information */
197	struct in6_addr	sin6_addr;	/* IP6 address */
198	ntp_u_int32_t	sin6_scope_id;	/* scope zone index */
199};
200#endif
201
202/*
203 * Unspecified
204 */
205#ifndef IN6_IS_ADDR_UNSPECIFIED
206#define IN6_IS_ADDR_UNSPECIFIED(a)	\
207	((*(const ntp_u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
208	 (*(const ntp_u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
209	 (*(const ntp_u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
210	 (*(const ntp_u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
211#endif
212/*
213 * Multicast
214 */
215#ifndef IN6_IS_ADDR_MULTICAST
216#define IN6_IS_ADDR_MULTICAST(a)	((a)->s6_addr[0] == 0xff)
217#endif
218/*
219 * Unicast link / site local.
220 */
221#ifndef IN6_IS_ADDR_LINKLOCAL
222#define IN6_IS_ADDR_LINKLOCAL(a)	(\
223(*((u_long *)((a)->s6_addr)    ) == 0xfe) && \
224((*((u_long *)((a)->s6_addr) + 1) & 0xc0) == 0x80))
225#endif
226
227#ifndef IN6_IS_ADDR_SITELOCAL
228#define IN6_IS_ADDR_SITELOCAL(a)	(\
229(*((u_long *)((a)->s6_addr)    ) == 0xfe) && \
230((*((u_long *)((a)->s6_addr) + 1) & 0xc0) == 0xc0))
231#endif
232
233struct addrinfo {
234	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
235	int	ai_family;	/* PF_xxx */
236	int	ai_socktype;	/* SOCK_xxx */
237	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
238	size_t	ai_addrlen;	/* length of ai_addr */
239	char	*ai_canonname;	/* canonical name for hostname */
240	struct	sockaddr *ai_addr;	/* binary address */
241	struct	addrinfo *ai_next;	/* next structure in linked list */
242};
243
244/*
245 * Error return codes from getaddrinfo()
246 */
247#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
248#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
249#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
250#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
251#define	EAI_FAMILY	 5	/* ai_family not supported */
252#define	EAI_MEMORY	 6	/* memory allocation failure */
253#define	EAI_NODATA	 7	/* no address associated with hostname */
254#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
255#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
256#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
257#define	EAI_SYSTEM	11	/* system error returned in errno */
258#define	EAI_BADHINTS	12
259#define	EAI_PROTOCOL	13
260#define	EAI_MAX		14
261
262
263int	getaddrinfo P((const char *, const char *,
264			 const struct addrinfo *, struct addrinfo **));
265int	getnameinfo P((const struct sockaddr *, u_int, char *,
266			 size_t, char *, size_t, int));
267void	freeaddrinfo P((struct addrinfo *));
268char	*gai_strerror P((int));
269
270/*
271 * Constants for getnameinfo()
272 */
273#ifndef NI_MAXHOST
274#define	NI_MAXHOST	1025
275#define	NI_MAXSERV	32
276#endif
277
278/*
279 * Flag values for getnameinfo()
280 */
281#ifndef NI_NUMERICHOST
282#define	NI_NOFQDN	0x00000001
283#define	NI_NUMERICHOST	0x00000002
284#define	NI_NAMEREQD	0x00000004
285#define	NI_NUMERICSERV	0x00000008
286#define	NI_DGRAM	0x00000010
287#define NI_WITHSCOPEID	0x00000020
288#endif
289
290#endif /* ISC_PLATFORM_HAVEIPV6 */
291
292#endif /* !_NTP_RFC2553_H_ */