1 /*-
2  * Copyright (c) 2012 The FreeBSD Foundation
3  * All rights reserved.
4  *
5  * This software was developed by Pawel Jakub Dawidek under sponsorship from
6  * the FreeBSD Foundation.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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  * $FreeBSD$
30  */
31 
32 #ifndef	_CAP_DNS_H_
33 #define	_CAP_DNS_H_
34 
35 #ifdef HAVE_CASPER
36 #define WITH_CASPER
37 #endif
38 
39 #include <sys/socket.h>	/* socklen_t */
40 
41 struct addrinfo;
42 struct hostent;
43 
44 #ifdef WITH_CASPER
45 struct hostent *cap_gethostbyname(cap_channel_t *chan, const char *name);
46 struct hostent *cap_gethostbyname2(cap_channel_t *chan, const char *name,
47     int type);
48 struct hostent *cap_gethostbyaddr(cap_channel_t *chan, const void *addr,
49     socklen_t len, int type);
50 
51 int cap_getaddrinfo(cap_channel_t *chan, const char *hostname,
52     const char *servname, const struct addrinfo *hints, struct addrinfo **res);
53 int cap_getnameinfo(cap_channel_t *chan, const struct sockaddr *sa,
54     socklen_t salen, char *host, size_t hostlen, char *serv, size_t servlen,
55     int flags);
56 
57 int cap_dns_type_limit(cap_channel_t *chan, const char * const *types,
58     size_t ntypes);
59 int cap_dns_family_limit(cap_channel_t *chan, const int *families,
60     size_t nfamilies);
61 #else
62 #define	cap_gethostbyname(chan, name)		 gethostbyname(name)
63 #define cap_gethostbyname2(chan, name, type)	 gethostbyname2(name, type)
64 #define cap_gethostbyaddr(chan, addr, len, type) gethostbyaddr(addr, len, type)
65 
66 #define	cap_getaddrinfo(chan, hostname, servname, hints, res)			\
67 	getaddrinfo(hostname, servname, hints, res)
68 #define	cap_getnameinfo(chan, sa, salen, host, hostlen, serv, servlen, flags)	\
69 	getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
70 
71 #define	cap_dns_type_limit(chan, types, ntypes)		(0)
72 #define cap_dns_family_limit(chan, families, nfamilies)	(0)
73 #endif
74 
75 #endif	/* !_CAP_DNS_H_ */
76