3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * reverse netgroup map generator program
34 * Written by Bill Paul <wpaul@ctr.columbia.edu>
35 * Center for Telecommunications Research
36 * Columbia University, New York City
38 * $FreeBSD: src/libexec/revnetgroup/revnetgroup.c,v 1.10.2.1 2000/07/20 10:35:08 kris Exp $
48 /* Default location of netgroup file. */
49 static const char *netgroup = "/etc/netgroup";
51 /* Stored hash table version of 'forward' netgroup database. */
52 struct group_entry *gtable[TABLESIZE];
55 * Stored hash table of 'reverse' netgroup member database
56 * which we will construct.
58 struct member_entry *mtable[TABLESIZE];
63 fprintf (stderr,"usage: revnetgroup -u|-h [-f netgroup file]\n");
68 main(int argc, char *argv[])
72 struct group_entry *gcur;
73 struct member_entry *mcur;
74 char *host, *user, *domain;
76 char *key = NULL, *data = NULL;
82 while ((ch = getopt(argc, argv, "uhf:")) != -1) {
86 warnx("please use only one of -u or -h");
93 warnx("please use only one of -u or -h");
110 if (strcmp(netgroup, "-")) {
111 if ((fp = fopen(netgroup, "r")) == NULL) {
112 err(1, "%s", netgroup);
118 /* Stuff all the netgroup names and members into a hash table. */
119 while (fgets(readbuf, LINSIZ, fp)) {
120 if (readbuf[0] == '#')
122 /* handle backslash line continuations */
123 while(readbuf[strlen(readbuf) - 2] == '\\') {
124 fgets((char *)&readbuf[strlen(readbuf) - 2],
125 sizeof(readbuf) - strlen(readbuf), fp);
128 if ((data = (char *)(strpbrk(readbuf, " \t") + 1)) < (char *)2)
130 key = (char *)&readbuf;
132 store(gtable, key, data);
138 * Find all members of each netgroup and keep track of which
139 * group they belong to.
141 for (i = 0; i < TABLESIZE; i++) {
144 __setnetgrent(gcur->key);
145 while(__getnetgrent(&host, &user, &domain) != 0) {
146 if (hosts ? host && strcmp(host,"-") : user && strcmp(user, "-"))
147 mstore(mtable, hosts ? host : user, gcur->key, domain);
153 /* Release resources used by the netgroup parser code. */
156 /* Spew out the results. */
157 for (i = 0; i < TABLESIZE; i++) {
160 struct grouplist *tmp;
161 printf ("%s.%s\t", mcur->key, mcur->domain);
164 printf ("%s", tmp->groupname);
174 /* Let the OS free all our resources. */