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getnetgrent.c revision 1.1.1.2 
      1 /*	$NetBSD: getnetgrent.c,v 1.1.1.2 2012/09/09 16:07:55 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2004, 2005, 2008  Internet Systems Consortium, Inc. ("ISC")
      5  * Copyright (C) 1996-1999, 2001, 2003  Internet Software Consortium.
      6  *
      7  * Permission to use, copy, modify, and/or distribute this software for any
      8  * purpose with or without fee is hereby granted, provided that the above
      9  * copyright notice and this permission notice appear in all copies.
     10  *
     11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
     12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
     13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
     14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
     16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
     17  * PERFORMANCE OF THIS SOFTWARE.
     18  */
     19 
     20 #if defined(LIBC_SCCS) && !defined(lint)
     21 static const char rcsid[] = "Id: getnetgrent.c,v 1.6 2008/11/14 02:36:51 marka Exp ";
     22 #endif /* LIBC_SCCS and not lint */
     23 
     24 /* Imports */
     25 
     26 #include "port_before.h"
     27 
     28 #if !defined(__BIND_NOSTATIC)
     29 
     30 #include <sys/types.h>
     31 
     32 #include <netinet/in.h>
     33 #include <arpa/nameser.h>
     34 
     35 #include <errno.h>
     36 #include <resolv.h>
     37 #include <stdio.h>
     38 
     39 #include <irs.h>
     40 
     41 #include "port_after.h"
     42 
     43 #include "irs_data.h"
     44 
     45 /* Forward */
     46 
     47 static struct net_data *init(void);
     48 
     49 
     50 /* Public */
     51 
     52 #ifndef SETNETGRENT_ARGS
     53 #define SETNETGRENT_ARGS const char *netgroup
     54 #endif
     55 void
     56 setnetgrent(SETNETGRENT_ARGS) {
     57 	struct net_data *net_data = init();
     58 
     59 	setnetgrent_p(netgroup, net_data);
     60 }
     61 
     62 void
     63 endnetgrent(void) {
     64 	struct net_data *net_data = init();
     65 
     66 	endnetgrent_p(net_data);
     67 }
     68 
     69 #ifndef INNETGR_ARGS
     70 #define INNETGR_ARGS const char *netgroup, const char *host, \
     71 		     const char *user, const char *domain
     72 #endif
     73 int
     74 innetgr(INNETGR_ARGS) {
     75 	struct net_data *net_data = init();
     76 
     77 	return (innetgr_p(netgroup, host, user, domain, net_data));
     78 }
     79 
     80 int
     81 getnetgrent(NGR_R_CONST char **host, NGR_R_CONST char **user,
     82 	    NGR_R_CONST char **domain)
     83 {
     84 	struct net_data *net_data = init();
     85 	const char *ch, *cu, *cd;
     86 	int ret;
     87 
     88 	ret = getnetgrent_p(&ch, &cu, &cd, net_data);
     89 	if (ret != 1)
     90 		return (ret);
     91 
     92 	DE_CONST(ch, *host);
     93 	DE_CONST(cu, *user);
     94 	DE_CONST(cd, *domain);
     95 	return (ret);
     96 }
     97 
     98 /* Shared private. */
     99 
    100 void
    101 setnetgrent_p(const char *netgroup, struct net_data *net_data) {
    102 	struct irs_ng *ng;
    103 
    104 	if ((net_data != NULL) && ((ng = net_data->ng) != NULL))
    105 		(*ng->rewind)(ng, netgroup);
    106 }
    107 
    108 void
    109 endnetgrent_p(struct net_data *net_data) {
    110 	struct irs_ng *ng;
    111 
    112 	if (!net_data)
    113 		return;
    114 	if ((ng = net_data->ng) != NULL)
    115 		(*ng->close)(ng);
    116 	net_data->ng = NULL;
    117 }
    118 
    119 int
    120 innetgr_p(const char *netgroup, const char *host,
    121 	  const char *user, const char *domain,
    122 	  struct net_data *net_data) {
    123 	struct irs_ng *ng;
    124 
    125 	if (!net_data || !(ng = net_data->ng))
    126 		return (0);
    127 	return ((*ng->test)(ng, netgroup, host, user, domain));
    128 }
    129 
    130 int
    131 getnetgrent_p(const char **host, const char **user, const char **domain,
    132 	      struct net_data *net_data ) {
    133 	struct irs_ng *ng;
    134 
    135 	if (!net_data || !(ng = net_data->ng))
    136 		return (0);
    137 	return ((*ng->next)(ng, host, user, domain));
    138 }
    139 
    140 /* Private */
    141 
    142 static struct net_data *
    143 init(void) {
    144 	struct net_data *net_data;
    145 
    146 	if (!(net_data = net_data_init(NULL)))
    147 		goto error;
    148 	if (!net_data->ng) {
    149 		net_data->ng = (*net_data->irs->ng_map)(net_data->irs);
    150 		if (!net_data->ng) {
    151   error:
    152 			errno = EIO;
    153 			return (NULL);
    154 		}
    155 	}
    156 
    157 	return (net_data);
    158 }
    159 
    160 #endif /*__BIND_NOSTATIC*/
    161 
    162 /*! \file */
    163