1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1995, 1996
5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * netid map generator program
35 *
36 * Written by Bill Paul <wpaul@ctr.columbia.edu>
37 * Center for Telecommunications Research
38 * Columbia University, New York City
39 */
40
41 #include <sys/types.h>
42
43 #include <rpc/rpc.h>
44 #include <rpcsvc/yp_prot.h>
45 #include <rpcsvc/ypclnt.h>
46
47 #include <err.h>
48 #include <grp.h>
49 #include <netdb.h>
50 #include <pwd.h>
51 #include <stdio.h>
52 #include <stdlib.h>
53 #include <string.h>
54 #include <unistd.h>
55
56 #include "hash.h"
57
58 #define LINSIZ 1024
59 #define OPSYS "unix"
60
61 /* Default location of group file. */
62 char *groupfile = _PATH_GROUP;
63 /* Default location of master.passwd file. */
64 char *passfile = _PATH_PASSWD;
65 /* Default location of hosts file. */
66 char *hostsfile = _PATH_HOSTS;
67 /* Default location of netid file */
68 char *netidfile = "/etc/netid";
69
70 /*
71 * Stored hash table of 'reverse' group member database
72 * which we will construct.
73 */
74 struct member_entry *mtable[TABLESIZE];
75
76 /*
77 * Dupe table: used to keep track of entries so we don't
78 * print the same thing twice.
79 */
80 struct member_entry *dtable[TABLESIZE];
81
82 extern struct group *_getgrent(void);
83 extern int _setgrent(void);
84 extern void _endgrent(void);
85
86 static void
usage(void)87 usage(void)
88 {
89 fprintf (stderr, "%s\n%s\n",
90 "usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]",
91 " [-n netid_file] [-d domain]");
92 exit(1);
93 }
94
95 extern FILE *_gr_fp;
96
97 int
main(int argc,char * argv[])98 main(int argc, char *argv[])
99 {
100 FILE *gfp, *pfp, *hfp, *nfp;
101 char readbuf[LINSIZ];
102 char writebuf[LINSIZ];
103 struct group *gr;
104 struct grouplist *glist;
105 char *domain;
106 int ch;
107 gid_t i;
108 char *ptr, *pidptr, *gidptr, *hptr;
109 int quiet = 0;
110
111 domain = NULL;
112 while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) {
113 switch(ch) {
114 case 'g':
115 groupfile = optarg;
116 break;
117 case 'p':
118 passfile = optarg;
119 break;
120 case 'h':
121 hostsfile = optarg;
122 break;
123 case 'n':
124 netidfile = optarg;
125 break;
126 case 'd':
127 domain = optarg;
128 break;
129 case 'q':
130 quiet++;
131 break;
132 default:
133 usage();
134 break;
135 }
136 }
137
138 if (domain == NULL) {
139 if (yp_get_default_domain(&domain))
140 errx(1, "no domain name specified and default \
141 domain not set");
142 }
143
144 if ((gfp = fopen(groupfile, "r")) == NULL) {
145 err(1, "%s", groupfile);
146 }
147
148 if ((pfp = fopen(passfile, "r")) == NULL) {
149 err(1, "%s", passfile);
150 }
151
152 if ((hfp = fopen(hostsfile, "r")) == NULL) {
153 err(1, "%s", hostsfile);
154 }
155
156 if ((nfp = fopen(netidfile, "r")) == NULL) {
157 /* netid is optional -- just continue */
158 nfp = NULL;
159 }
160
161 _gr_fp = gfp;
162
163 /* Load all the group membership info into a hash table. */
164
165 _setgrent();
166 while((gr = _getgrent()) != NULL) {
167 while(*gr->gr_mem) {
168 mstore(mtable, *gr->gr_mem, gr->gr_gid, 0);
169 gr->gr_mem++;
170 }
171 }
172
173 fclose(gfp);
174 _endgrent();
175
176 /*
177 * Now parse the passwd database, spewing out the extra
178 * group information we just stored if necessary.
179 */
180 while(fgets(readbuf, LINSIZ, pfp)) {
181 /* Ignore comments: ^[ \t]*# */
182 for (ptr = readbuf; *ptr != '\0'; ptr++)
183 if (*ptr != ' ' && *ptr != '\t')
184 break;
185 if (*ptr == '#' || *ptr == '\0')
186 continue;
187 if ((ptr = strchr(readbuf, ':')) == NULL) {
188 warnx("bad passwd file entry: %s", readbuf);
189 continue;
190 }
191 *ptr = '\0';
192 ptr++;
193 if ((ptr = strchr(ptr, ':')) == NULL) {
194 warnx("bad passwd file entry: %s", readbuf);
195 continue;
196 }
197 *ptr = '\0';
198 ptr++;
199 pidptr = ptr;
200 if ((ptr = strchr(ptr, ':')) == NULL) {
201 warnx("bad passwd file entry: %s", readbuf);
202 continue;
203 }
204 *ptr = '\0';
205 ptr++;
206 gidptr = ptr;
207 if ((ptr = strchr(ptr, ':')) == NULL) {
208 warnx("bad passwd file entry: %s", readbuf);
209 continue;
210 }
211 *ptr = '\0';
212 i = atol(gidptr);
213
214 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
215 pidptr, domain);
216
217 if (lookup(dtable, writebuf)) {
218 if (!quiet)
219 warnx("duplicate netid '%s.%s@%s' -- skipping",
220 OPSYS, pidptr, domain);
221 continue;
222 } else {
223 mstore(dtable, writebuf, 0, 1);
224 }
225 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr);
226 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) {
227 while(glist) {
228 if (glist->groupid != i)
229 printf(",%lu", (u_long)glist->groupid);
230 glist = glist->next;
231 }
232 }
233 printf ("\n");
234 }
235
236 fclose(pfp);
237
238 /*
239 * Now parse the hosts database (this part sucks).
240 */
241
242 while ((ptr = fgets(readbuf, LINSIZ, hfp))) {
243 if (*ptr == '#')
244 continue;
245 if (!(hptr = strpbrk(ptr, "#\n")))
246 continue;
247 *hptr = '\0';
248 if (!(hptr = strpbrk(ptr, " \t")))
249 continue;
250 *hptr++ = '\0';
251 ptr = hptr;
252 while (*ptr == ' ' || *ptr == '\t')
253 ptr++;
254 if (!(hptr = strpbrk(ptr, " \t")))
255 continue;
256 *hptr++ = '\0';
257 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
258 ptr, domain);
259 if (lookup(dtable, (char *)&writebuf)) {
260 if (!quiet)
261 warnx("duplicate netid '%s' -- skipping",
262 writebuf);
263 continue;
264 } else {
265 mstore(dtable, (char *)&writebuf, 0, 1);
266 }
267 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr);
268 }
269
270 fclose(hfp);
271
272 /*
273 * Lastly, copy out any extra information in the netid
274 * file. If it's not open, just ignore it: it's optional anyway.
275 */
276
277 if (nfp != NULL) {
278 while(fgets(readbuf, LINSIZ, nfp)) {
279 if (readbuf[0] == '#')
280 continue;
281 if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) {
282 warnx("bad netid entry: '%s'", readbuf);
283 continue;
284 }
285
286 writebuf[0] = *ptr;
287 *ptr = '\0';
288 if (lookup(dtable, (char *)&readbuf)) {
289 if (!quiet)
290 warnx("duplicate netid '%s' -- skipping",
291 readbuf);
292 continue;
293 } else {
294 mstore(dtable, (char *)&readbuf, 0, 1);
295 }
296 *ptr = writebuf[0];
297 printf("%s",readbuf);
298 }
299 fclose(nfp);
300 }
301
302 exit(0);
303 }
304