usr/src/lib/libresolv2/common/irs/nul_ng.c

   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 *
  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
  82 ng_close(struct irs_ng *this) {
  83         memput(this, sizeof *this);
  84 }
  85
  86 /* ARGSUSED */
  87 static int
  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
 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
 113 ng_rewind(struct irs_ng *this, const char *netgroup) {
 114         UNUSED(this);
 115         UNUSED(netgroup);
 116         /* NOOP */
 117 }
 118
 119 static void
 120 ng_minimize(struct irs_ng *this) {
 121         UNUSED(this);
 122         /* NOOP */
 123 }