xref: /illumos-gate/usr/src/lib/libresolv2/common/irs/nul_ng.c (revision 458f44a49dc56cd17a39815122214e7a1b4793e3)
1 /*
2  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
3  * Copyright (c) 1996,1999 by Internet Software Consortium.
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 /*! \file
19  * \brief
20  * nul_ng.c - the netgroup accessor null map
21  */
22 
23 #include "port_before.h"
24 
25 #include <sys/types.h>
26 #include <netinet/in.h>
27 #include <arpa/nameser.h>
28 #include <resolv.h>
29 
30 #include <stdio.h>
31 #include <string.h>
32 #include <netdb.h>
33 #include <ctype.h>
34 #include <stdlib.h>
35 #include <errno.h>
36 
37 #include <irs.h>
38 #include <isc/memcluster.h>
39 
40 #include "port_after.h"
41 
42 #include "irs_p.h"
43 #include "hesiod.h"
44 #include "dns_p.h"
45 
46 /* Forward. */
47 
48 static void 		ng_close(struct irs_ng *);
49 static int		ng_next(struct irs_ng *, const char **,
50 				const char **, const char **);
51 static int		ng_test(struct irs_ng *,
52  				const char *, const char *,
53 				const char *, const char *);
54 static void		ng_rewind(struct irs_ng *, const char *);
55 static void		ng_minimize(struct irs_ng *);
56 
57 /* Public. */
58 
59 struct irs_ng *
irs_nul_ng(struct irs_acc * this)60 irs_nul_ng(struct irs_acc *this) {
61 	struct irs_ng *ng;
62 
63 	UNUSED(this);
64 
65 	if (!(ng = memget(sizeof *ng))) {
66 		errno = ENOMEM;
67 		return (NULL);
68 	}
69 	memset(ng, 0x5e, sizeof *ng);
70 	ng->private = NULL;
71 	ng->close = ng_close;
72 	ng->next = ng_next;
73 	ng->test = ng_test;
74 	ng->rewind = ng_rewind;
75 	ng->minimize = ng_minimize;
76 	return (ng);
77 }
78 
79 /* Methods. */
80 
81 static void
ng_close(struct irs_ng * this)82 ng_close(struct irs_ng *this) {
83 	memput(this, sizeof *this);
84 }
85 
86 /* ARGSUSED */
87 static int
ng_next(struct irs_ng * this,const char ** host,const char ** user,const char ** domain)88 ng_next(struct irs_ng *this, const char **host, const char **user,
89 	const char **domain)
90 {
91 	UNUSED(this);
92 	UNUSED(host);
93 	UNUSED(user);
94 	UNUSED(domain);
95 	errno = ENOENT;
96 	return (-1);
97 }
98 
99 static int
ng_test(struct irs_ng * this,const char * name,const char * user,const char * host,const char * domain)100 ng_test(struct irs_ng *this, const char *name,
101 	const char *user, const char *host, const char *domain)
102 {
103 	UNUSED(this);
104 	UNUSED(name);
105 	UNUSED(user);
106 	UNUSED(host);
107 	UNUSED(domain);
108 	errno = ENODEV;
109 	return (-1);
110 }
111 
112 static void
ng_rewind(struct irs_ng * this,const char * netgroup)113 ng_rewind(struct irs_ng *this, const char *netgroup) {
114 	UNUSED(this);
115 	UNUSED(netgroup);
116 	/* NOOP */
117 }
118 
119 static void
ng_minimize(struct irs_ng * this)120 ng_minimize(struct irs_ng *this) {
121 	UNUSED(this);
122 	/* NOOP */
123 }
124