1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1995, 1996
5 * Bill Paul <[email protected]>. 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 <[email protected]>
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 #ifndef lint
59 static const char rcsid[] =
60 "$FreeBSD$";
61 #endif /* not lint */
62
63 #define LINSIZ 1024
64 #define OPSYS "unix"
65
66 /* Default location of group file. */
67 char *groupfile = _PATH_GROUP;
68 /* Default location of master.passwd file. */
69 char *passfile = _PATH_PASSWD;
70 /* Default location of hosts file. */
71 char *hostsfile = _PATH_HOSTS;
72 /* Default location of netid file */
73 char *netidfile = "/etc/netid";
74
75 /*
76 * Stored hash table of 'reverse' group member database
77 * which we will construct.
78 */
79 struct member_entry *mtable[TABLESIZE];
80
81 /*
82 * Dupe table: used to keep track of entries so we don't
83 * print the same thing twice.
84 */
85 struct member_entry *dtable[TABLESIZE];
86
87 extern struct group *_getgrent(void);
88 extern int _setgrent(void);
89 extern void _endgrent(void);
90
91 static void
usage(void)92 usage(void)
93 {
94 fprintf (stderr, "%s\n%s\n",
95 "usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]",
96 " [-n netid_file] [-d domain]");
97 exit(1);
98 }
99
100 extern FILE *_gr_fp;
101
102 int
main(int argc,char * argv[])103 main(int argc, char *argv[])
104 {
105 FILE *gfp, *pfp, *hfp, *nfp;
106 char readbuf[LINSIZ];
107 char writebuf[LINSIZ];
108 struct group *gr;
109 struct grouplist *glist;
110 char *domain;
111 int ch;
112 gid_t i;
113 char *ptr, *pidptr, *gidptr, *hptr;
114 int quiet = 0;
115
116 domain = NULL;
117 while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) {
118 switch(ch) {
119 case 'g':
120 groupfile = optarg;
121 break;
122 case 'p':
123 passfile = optarg;
124 break;
125 case 'h':
126 hostsfile = optarg;
127 break;
128 case 'n':
129 netidfile = optarg;
130 break;
131 case 'd':
132 domain = optarg;
133 break;
134 case 'q':
135 quiet++;
136 break;
137 default:
138 usage();
139 break;
140 }
141 }
142
143 if (domain == NULL) {
144 if (yp_get_default_domain(&domain))
145 errx(1, "no domain name specified and default \
146 domain not set");
147 }
148
149 if ((gfp = fopen(groupfile, "r")) == NULL) {
150 err(1, "%s", groupfile);
151 }
152
153 if ((pfp = fopen(passfile, "r")) == NULL) {
154 err(1, "%s", passfile);
155 }
156
157 if ((hfp = fopen(hostsfile, "r")) == NULL) {
158 err(1, "%s", hostsfile);
159 }
160
161 if ((nfp = fopen(netidfile, "r")) == NULL) {
162 /* netid is optional -- just continue */
163 nfp = NULL;
164 }
165
166 _gr_fp = gfp;
167
168 /* Load all the group membership info into a hash table. */
169
170 _setgrent();
171 while((gr = _getgrent()) != NULL) {
172 while(*gr->gr_mem) {
173 mstore(mtable, *gr->gr_mem, gr->gr_gid, 0);
174 gr->gr_mem++;
175 }
176 }
177
178 fclose(gfp);
179 _endgrent();
180
181 /*
182 * Now parse the passwd database, spewing out the extra
183 * group information we just stored if necessary.
184 */
185 while(fgets(readbuf, LINSIZ, pfp)) {
186 /* Ignore comments: ^[ \t]*# */
187 for (ptr = readbuf; *ptr != '\0'; ptr++)
188 if (*ptr != ' ' && *ptr != '\t')
189 break;
190 if (*ptr == '#' || *ptr == '\0')
191 continue;
192 if ((ptr = strchr(readbuf, ':')) == NULL) {
193 warnx("bad passwd file entry: %s", readbuf);
194 continue;
195 }
196 *ptr = '\0';
197 ptr++;
198 if ((ptr = strchr(ptr, ':')) == NULL) {
199 warnx("bad passwd file entry: %s", readbuf);
200 continue;
201 }
202 *ptr = '\0';
203 ptr++;
204 pidptr = ptr;
205 if ((ptr = strchr(ptr, ':')) == NULL) {
206 warnx("bad passwd file entry: %s", readbuf);
207 continue;
208 }
209 *ptr = '\0';
210 ptr++;
211 gidptr = ptr;
212 if ((ptr = strchr(ptr, ':')) == NULL) {
213 warnx("bad passwd file entry: %s", readbuf);
214 continue;
215 }
216 *ptr = '\0';
217 i = atol(gidptr);
218
219 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
220 pidptr, domain);
221
222 if (lookup(dtable, writebuf)) {
223 if (!quiet)
224 warnx("duplicate netid '%s.%s@%s' -- skipping",
225 OPSYS, pidptr, domain);
226 continue;
227 } else {
228 mstore(dtable, writebuf, 0, 1);
229 }
230 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr);
231 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) {
232 while(glist) {
233 if (glist->groupid != i)
234 printf(",%lu", (u_long)glist->groupid);
235 glist = glist->next;
236 }
237 }
238 printf ("\n");
239 }
240
241 fclose(pfp);
242
243 /*
244 * Now parse the hosts database (this part sucks).
245 */
246
247 while ((ptr = fgets(readbuf, LINSIZ, hfp))) {
248 if (*ptr == '#')
249 continue;
250 if (!(hptr = strpbrk(ptr, "#\n")))
251 continue;
252 *hptr = '\0';
253 if (!(hptr = strpbrk(ptr, " \t")))
254 continue;
255 *hptr++ = '\0';
256 ptr = hptr;
257 while (*ptr == ' ' || *ptr == '\t')
258 ptr++;
259 if (!(hptr = strpbrk(ptr, " \t")))
260 continue;
261 *hptr++ = '\0';
262 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
263 ptr, domain);
264 if (lookup(dtable, (char *)&writebuf)) {
265 if (!quiet)
266 warnx("duplicate netid '%s' -- skipping",
267 writebuf);
268 continue;
269 } else {
270 mstore(dtable, (char *)&writebuf, 0, 1);
271 }
272 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr);
273 }
274
275 fclose(hfp);
276
277 /*
278 * Lastly, copy out any extra information in the netid
279 * file. If it's not open, just ignore it: it's optional anyway.
280 */
281
282 if (nfp != NULL) {
283 while(fgets(readbuf, LINSIZ, nfp)) {
284 if (readbuf[0] == '#')
285 continue;
286 if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) {
287 warnx("bad netid entry: '%s'", readbuf);
288 continue;
289 }
290
291 writebuf[0] = *ptr;
292 *ptr = '\0';
293 if (lookup(dtable, (char *)&readbuf)) {
294 if (!quiet)
295 warnx("duplicate netid '%s' -- skipping",
296 readbuf);
297 continue;
298 } else {
299 mstore(dtable, (char *)&readbuf, 0, 1);
300 }
301 *ptr = writebuf[0];
302 printf("%s",readbuf);
303 }
304 fclose(nfp);
305 }
306
307 exit(0);
308 }
309