xref: /freebsd/libexec/mknetid/mknetid.c (revision 380a989b3223d455375b4fae70fd0b9bdd43bafb)
1 /*
2  * Copyright (c) 1995, 1996
3  *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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.
19  *
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
30  * SUCH DAMAGE.
31  *
32  * netid map generator program
33  *
34  * Written by Bill Paul <wpaul@ctr.columbia.edu>
35  * Center for Telecommunications Research
36  * Columbia University, New York City
37  */
38 
39 #include <sys/types.h>
40 
41 #include <rpc/rpc.h>
42 #include <rpcsvc/yp_prot.h>
43 #include <rpcsvc/ypclnt.h>
44 
45 #include <err.h>
46 #include <grp.h>
47 #include <netdb.h>
48 #include <pwd.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <unistd.h>
53 
54 #include "hash.h"
55 
56 #ifndef lint
57 static const char rcsid[] =
58 	"$Id: mknetid.c,v 1.9 1997/12/15 07:19:41 charnier Exp $";
59 #endif /* not lint */
60 
61 #define LINSIZ 1024
62 #define OPSYS "unix"
63 
64 /* Default location of group file. */
65 char *groupfile = _PATH_GROUP;
66 /* Default location of master.passwd file. */
67 char *passfile = _PATH_PASSWD;
68 /* Default location of hosts file. */
69 char *hostsfile = _PATH_HOSTS;
70 /* Default location of netid file */
71 char *netidfile = "/etc/netid";
72 
73 /*
74  * Stored hash table of 'reverse' group member database
75  * which we will construct.
76  */
77 struct member_entry *mtable[TABLESIZE];
78 
79 /*
80  * Dupe table: used to keep track of entries so we don't
81  * print the same thing twice.
82  */
83 struct member_entry *dtable[TABLESIZE];
84 
85 extern struct group *_getgrent __P(( void ));
86 extern int _setgrent __P(( void ));
87 extern void _endgrent __P(( void ));
88 
89 static void
90 usage()
91 {
92 	fprintf (stderr, "%s\n%s\n",
93 	"usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]",
94 	"               [-d netid_file] [-d domain]");
95 	exit(1);
96 }
97 
98 extern FILE *_gr_fp;
99 
100 int
101 main(argc, argv)
102 	int argc;
103 	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 	while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) {
117 		switch(ch) {
118 		case 'g':
119 			groupfile = optarg;
120 			break;
121 		case 'p':
122 			passfile = optarg;
123 			break;
124 		case 'h':
125 			hostsfile = optarg;
126 			break;
127 		case 'n':
128 			netidfile = optarg;
129 			break;
130 		case 'd':
131 			domain = optarg;
132 			break;
133 		case 'q':
134 			quiet++;
135 			break;
136 		default:
137 			usage();
138 			break;
139 		}
140 	}
141 
142 	if (domain == NULL) {
143 		if (yp_get_default_domain(&domain))
144 			errx(1, "no domain name specified and default \
145 domain not set");
146 	}
147 
148 	if ((gfp = fopen(groupfile, "r")) == NULL) {
149 		err(1, "%s", groupfile);
150 	}
151 
152 	if ((pfp = fopen(passfile, "r")) == NULL) {
153 		err(1, "%s", passfile);
154 	}
155 
156 	if ((hfp = fopen(hostsfile, "r")) == NULL) {
157 		err(1, "%s", hostsfile);
158 	}
159 
160 	if ((nfp = fopen(netidfile, "r")) == NULL) {
161 		/* netid is optional -- just continue */
162 		nfp = NULL;
163 	}
164 
165 	_gr_fp = gfp;
166 
167 	/* Load all the group membership info into a hash table. */
168 
169 	_setgrent();
170 	while((gr = _getgrent()) != NULL) {
171 		while(*gr->gr_mem) {
172 			mstore(mtable, *gr->gr_mem, gr->gr_gid, 0);
173 			gr->gr_mem++;
174 		}
175 	}
176 
177 	fclose(gfp);
178 	_endgrent();
179 
180 	/*
181 	 * Now parse the passwd database, spewing out the extra
182 	 * group information we just stored if necessary.
183 	 */
184 	while(fgets(readbuf, LINSIZ, pfp)) {
185 		if ((ptr = strchr(readbuf, ':')) == NULL)
186 			warnx("bad passwd file entry: %s", readbuf);
187 		*ptr = '\0';
188 		ptr++;
189 		if ((ptr = strchr(ptr, ':')) == NULL)
190 			warnx("bad passwd file entry: %s", readbuf);
191 		*ptr = '\0';
192 		ptr++;
193 		pidptr = ptr;
194 		if ((ptr = strchr(ptr, ':')) == NULL)
195 			warnx("bad passwd file entry: %s", readbuf);
196 		*ptr = '\0';
197 		ptr++;
198 		gidptr = ptr;
199 		if ((ptr = strchr(ptr, ':')) == NULL)
200 			warnx("bad passwd file entry: %s", readbuf);
201 		*ptr = '\0';
202 		i = atol(gidptr);
203 
204 		snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
205 							pidptr, domain);
206 
207 		if (lookup(dtable, writebuf)) {
208 			if (!quiet)
209 				warnx("duplicate netid '%s.%s@%s' -- skipping",
210 						OPSYS, pidptr, domain);
211 			continue;
212 		} else {
213 			mstore(dtable, writebuf, 0, 1);
214 		}
215 		printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr);
216 		if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) {
217 			while(glist) {
218 				if (glist->groupid != i)
219 					printf(",%lu", (u_long)glist->groupid);
220 				glist = glist->next;
221 			}
222 		}
223 		printf ("\n");
224 	}
225 
226 	fclose(pfp);
227 
228 	/*
229 	 * Now parse the hosts database (this part sucks).
230 	 */
231 
232 	while ((ptr = fgets(readbuf, LINSIZ, hfp))) {
233 		if (*ptr == '#')
234 			continue;
235 		if (!(hptr = strpbrk(ptr, "#\n")))
236 			continue;
237 		*hptr = '\0';
238 		if (!(hptr = strpbrk(ptr, " \t")))
239 			continue;
240 		*hptr++ = '\0';
241 		ptr = hptr;
242 		while (*ptr == ' ' || *ptr == '\t')
243 			ptr++;
244 		if (!(hptr = strpbrk(ptr, " \t")))
245 			continue;
246 		*hptr++ = '\0';
247 		snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
248 								ptr, domain);
249 		if (lookup(dtable, (char *)&writebuf)) {
250 			if (!quiet)
251 				warnx("duplicate netid '%s' -- skipping",
252 								writebuf);
253 			continue;
254 		} else {
255 			mstore(dtable, (char *)&writebuf, 0, 1);
256 		}
257 		printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr);
258 	}
259 
260 	fclose(hfp);
261 
262 	/*
263 	 * Lastly, copy out any extra information in the netid
264 	 * file. If it's not open, just ignore it: it's optional anyway.
265 	 */
266 
267 	if (nfp != NULL) {
268 		while(fgets(readbuf, LINSIZ, nfp)) {
269 			if (readbuf[0] == '#')
270 				continue;
271 			if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) {
272 				warnx("bad netid entry: '%s'", readbuf);
273 				continue;
274 			}
275 
276 			writebuf[0] = *ptr;
277 			*ptr = '\0';
278 			if (lookup(dtable, (char *)&readbuf)) {
279 				if (!quiet)
280 					warnx("duplicate netid '%s' -- skipping",
281 								readbuf);
282 				continue;
283 			} else {
284 				mstore(dtable, (char *)&readbuf, 0, 1);
285 			}
286 			*ptr = writebuf[0];
287 			printf("%s",readbuf);
288 		}
289 		fclose(nfp);
290 	}
291 
292 	exit(0);
293 }
294