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

   1 /*
   2  * Copyright (C) 2004, 2005, 2008  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1996-1999, 2001, 2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or 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 WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* Imports */
  19
  20 #include "port_before.h"
  21
  22 #if !defined(__BIND_NOSTATIC)
  23
  24 #include <sys/types.h>
  25
  26 #include <netinet/in.h>
  27 #include <arpa/nameser.h>
  28
  29 #include <errno.h>
  30 #include <resolv.h>
  31 #include <stdio.h>
  32
  33 #include <irs.h>
  34
  35 #include "port_after.h"
  36
  37 #include "irs_data.h"
  38
  39 /* Forward */
  40
  41 static struct net_data *init(void);
  42
  43
  44 /* Public */
  45
  46 #ifndef SETNETGRENT_ARGS
  47 #define SETNETGRENT_ARGS const char *netgroup
  48 #endif
  49 void
  50 setnetgrent(SETNETGRENT_ARGS) {
  51         struct net_data *net_data = init();
  52
  53         setnetgrent_p(netgroup, net_data);
  54 }
  55
  56 void
  57 endnetgrent(void) {
  58         struct net_data *net_data = init();
  59
  60         endnetgrent_p(net_data);
  61 }
  62
  63 #ifndef INNETGR_ARGS
  64 #define INNETGR_ARGS const char *netgroup, const char *host, \
  65                      const char *user, const char *domain
  66 #endif
  67 int
  68 innetgr(INNETGR_ARGS) {
  69         struct net_data *net_data = init();
  70
  71         return (innetgr_p(netgroup, host, user, domain, net_data));
  72 }
  73
  74 int
  75 getnetgrent(NGR_R_CONST char **host, NGR_R_CONST char **user,
  76             NGR_R_CONST char **domain)
  77 {
  78         struct net_data *net_data = init();
  79         const char *ch, *cu, *cd;
  80         int ret;
  81
  82         ret = getnetgrent_p(&ch, &cu, &cd, net_data);
  83         if (ret != 1)
  84                 return (ret);
  85
  86         DE_CONST(ch, *host);
  87         DE_CONST(cu, *user);
  88         DE_CONST(cd, *domain);
  89         return (ret);
  90 }
  91
  92 /* Shared private. */
  93
  94 void
  95 setnetgrent_p(const char *netgroup, struct net_data *net_data) {
  96         struct irs_ng *ng;
  97
  98         if ((net_data != NULL) && ((ng = net_data->ng) != NULL))
  99                 (*ng->rewind)(ng, netgroup);
 100 }
 101
 102 void
 103 endnetgrent_p(struct net_data *net_data) {
 104         struct irs_ng *ng;
 105
 106         if (!net_data)
 107                 return;
 108         if ((ng = net_data->ng) != NULL)
 109                 (*ng->close)(ng);
 110         net_data->ng = NULL;
 111 }
 112
 113 int
 114 innetgr_p(const char *netgroup, const char *host,
 115           const char *user, const char *domain,
 116           struct net_data *net_data) {
 117         struct irs_ng *ng;
 118
 119         if (!net_data || !(ng = net_data->ng))
 120                 return (0);
 121         return ((*ng->test)(ng, netgroup, host, user, domain));
 122 }
 123
 124 int
 125 getnetgrent_p(const char **host, const char **user, const char **domain,
 126               struct net_data *net_data ) {
 127         struct irs_ng *ng;
 128
 129         if (!net_data || !(ng = net_data->ng))
 130                 return (0);
 131         return ((*ng->next)(ng, host, user, domain));
 132 }
 133
 134 /* Private */
 135
 136 static struct net_data *
 137 init(void) {
 138         struct net_data *net_data;
 139
 140         if (!(net_data = net_data_init(NULL)))
 141                 goto error;
 142         if (!net_data->ng) {
 143                 net_data->ng = (*net_data->irs->ng_map)(net_data->irs);
 144                 if (!net_data->ng) {
 145   error:
 146                         errno = EIO;
 147                         return (NULL);
 148                 }
 149         }
 150
 151         return (net_data);
 152 }
 153
 154 #endif /*__BIND_NOSTATIC*/
 155
 156 /*! \file */