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 $
39 * $DragonFly: src/libexec/revnetgroup/revnetgroup.c,v 1.2 2003/06/17 04:27:07 dillon Exp $
49 /* Default location of netgroup file. */
50 char *netgroup = "/etc/netgroup";
52 /* Stored hash table version of 'forward' netgroup database. */
53 struct group_entry *gtable[TABLESIZE];
56 * Stored hash table of 'reverse' netgroup member database
57 * which we will construct.
59 struct member_entry *mtable[TABLESIZE];
64 fprintf (stderr,"usage: revnetgroup -u|-h [-f netgroup file]\n");
75 struct group_entry *gcur;
76 struct member_entry *mcur;
77 char *host, *user, *domain;
79 char *key = NULL, *data = NULL;
85 while ((ch = getopt(argc, argv, "uhf:")) != -1) {
89 warnx("please use only one of -u or -h");
96 warnx("please use only one of -u or -h");
113 if (strcmp(netgroup, "-")) {
114 if ((fp = fopen(netgroup, "r")) == NULL) {
115 err(1, "%s", netgroup);
121 /* Stuff all the netgroup names and members into a hash table. */
122 while (fgets(readbuf, LINSIZ, fp)) {
123 if (readbuf[0] == '#')
125 /* handle backslash line continuations */
126 while(readbuf[strlen(readbuf) - 2] == '\\') {
127 fgets((char *)&readbuf[strlen(readbuf) - 2],
128 sizeof(readbuf) - strlen(readbuf), fp);
131 if ((data = (char *)(strpbrk(readbuf, " \t") + 1)) < (char *)2)
133 key = (char *)&readbuf;
135 store(gtable, key, data);
141 * Find all members of each netgroup and keep track of which
142 * group they belong to.
144 for (i = 0; i < TABLESIZE; i++) {
147 __setnetgrent(gcur->key);
148 while(__getnetgrent(&host, &user, &domain) != 0) {
149 if (hosts ? host && strcmp(host,"-") : user && strcmp(user, "-"))
150 mstore(mtable, hosts ? host : user, gcur->key, domain);
156 /* Release resources used by the netgroup parser code. */
159 /* Spew out the results. */
160 for (i = 0; i < TABLESIZE; i++) {
163 struct grouplist *tmp;
164 printf ("%s.%s\t", mcur->key, mcur->domain);
167 printf ("%s", tmp->groupname);
177 /* Let the OS free all our resources. */