yp_mkdb.c revision 331722 
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
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: stable/11/usr.sbin/yp_mkdb/yp_mkdb.c 331722 2018-03-29 02:50:57Z eadler $");
35
36#include <err.h>
37#include <fcntl.h>
38#include <limits.h>
39#include <stdint.h>
40#include <stdio.h>
41#include <stdlib.h>
42#include <string.h>
43#include <time.h>
44#include <unistd.h>
45#include <rpc/rpc.h>
46#include <rpcsvc/yp.h>
47#include <sys/param.h>
48#include <sys/types.h>
49#include <sys/stat.h>
50#include "yp_extern.h"
51#include "ypxfr_extern.h"
52
53char *yp_dir = "";	/* No particular default needed. */
54int debug = 1;
55
56static void
57usage(void)
58{
59	fprintf(stderr, "%s\n%s\n%s\n%s\n",
60	"usage: yp_mkdb -c",
61	"       yp_mkdb -u dbname",
62	"       yp_mkdb [-c] [-b] [-s] [-f] [-i inputfile] [-o outputfile]",
63	"               [-d domainname ] [-m mastername] inputfile dbname");
64	exit(1);
65}
66
67#define PERM_SECURE (S_IRUSR|S_IWUSR)
68static DB *
69open_db(char *path, int flags)
70{
71	extern HASHINFO openinfo;
72
73	return(dbopen(path, flags, PERM_SECURE, DB_HASH, &openinfo));
74}
75
76static void
77unwind(char *map)
78{
79	DB *dbp;
80	DBT key, data;
81
82	dbp = open_db(map, O_RDONLY);
83
84	if (dbp == NULL)
85		err(1, "open_db(%s) failed", map);
86
87	key.data = NULL;
88	while (yp_next_record(dbp, &key, &data, 1, 1) == YP_TRUE)
89		printf("%.*s %.*s\n", (int)key.size, key.data, (int)data.size,
90		    data.data);
91
92	(void)(dbp->close)(dbp);
93	return;
94}
95
96int
97main(int argc, char *argv[])
98{
99	int ch;
100	int un = 0;
101	int clear = 0;
102	int filter_plusminus = 0;
103	char *infile = NULL;
104	char *map = NULL;
105	char *domain = NULL;
106	char *infilename = NULL;
107	char *outfilename = NULL;
108	char *mastername = NULL;
109	int interdom = 0;
110	int secure = 0;
111	DB *dbp;
112	DBT key, data;
113	char buf[10240];
114	char *keybuf, *datbuf;
115	FILE *ifp;
116	char hname[MAXHOSTNAMELEN + 2];
117
118	while ((ch = getopt(argc, argv, "uhcbsfd:i:o:m:")) != -1) {
119		switch (ch) {
120		case 'f':
121			filter_plusminus++;
122			break;
123		case 'u':
124			un++;
125			break;
126		case 'c':
127			clear++;
128			break;
129		case 'b':
130			interdom++;
131			break;
132		case 's':
133			secure++;
134			break;
135		case 'd':
136			domain = optarg;
137			break;
138		case 'i':
139			infilename = optarg;
140			break;
141		case 'o':
142			outfilename = optarg;
143			break;
144		case 'm':
145			mastername = optarg;
146			break;
147		case 'h':
148		default:
149			usage();
150			break;
151		}
152	}
153
154	argc -= optind;
155	argv += optind;
156
157	if (un) {
158		map = argv[0];
159		if (map == NULL)
160			usage();
161		unwind(map);
162		exit(0);
163
164	}
165
166	infile = argv[0];
167	map = argv[1];
168
169	if (infile == NULL || map == NULL) {
170		if (clear)
171			goto doclear;
172		usage();
173	}
174
175	if (mastername == NULL) {
176		if (gethostname((char *)&hname, sizeof(hname)) == -1)
177			err(1, "gethostname() failed");
178		mastername = (char *)&hname;
179	}
180
181	/*
182	 * Note that while we can read from stdin, we can't
183	 * write to stdout; the db library doesn't let you
184	 * write to a file stream like that.
185	 */
186	if (!strcmp(infile, "-")) {
187		ifp = stdin;
188	} else {
189		if ((ifp = fopen(infile, "r")) == NULL)
190			err(1, "failed to open %s", infile);
191	}
192
193	if ((dbp = open_db(map, O_RDWR|O_EXLOCK|O_EXCL|O_CREAT)) == NULL)
194		err(1, "open_db(%s) failed", map);
195
196	if (interdom) {
197		key.data = "YP_INTERDOMAIN";
198		key.size = sizeof("YP_INTERDOMAIN") - 1;
199		data.data = "";
200		data.size = 0;
201		yp_put_record(dbp, &key, &data, 0);
202	}
203
204	if (secure) {
205		key.data = "YP_SECURE";
206		key.size = sizeof("YP_SECURE") - 1;
207		data.data = "";
208		data.size = 0;
209		yp_put_record(dbp, &key, &data, 0);
210	}
211
212	key.data = "YP_MASTER_NAME";
213	key.size = sizeof("YP_MASTER_NAME") - 1;
214	data.data = mastername;
215	data.size = strlen(mastername);
216	yp_put_record(dbp, &key, &data, 0);
217
218	key.data = "YP_LAST_MODIFIED";
219	key.size = sizeof("YP_LAST_MODIFIED") - 1;
220	snprintf(buf, sizeof(buf), "%jd", (intmax_t)time(NULL));
221	data.data = (char *)&buf;
222	data.size = strlen(buf);
223	yp_put_record(dbp, &key, &data, 0);
224
225	if (infilename) {
226		key.data = "YP_INPUT_FILE";
227		key.size = sizeof("YP_INPUT_FILE") - 1;
228		data.data = infilename;
229		data.size = strlen(infilename);
230		yp_put_record(dbp, &key, &data, 0);
231	}
232
233	if (outfilename) {
234		key.data = "YP_OUTPUT_FILE";
235		key.size = sizeof("YP_OUTPUT_FILE") - 1;
236		data.data = outfilename;
237		data.size = strlen(outfilename);
238		yp_put_record(dbp, &key, &data, 0);
239	}
240
241	if (domain) {
242		key.data = "YP_DOMAIN_NAME";
243		key.size = sizeof("YP_DOMAIN_NAME") - 1;
244		data.data = domain;
245		data.size = strlen(domain);
246		yp_put_record(dbp, &key, &data, 0);
247	}
248
249	while (fgets((char *)&buf, sizeof(buf), ifp)) {
250		char *sep = NULL;
251		int rval;
252
253		/* NUL terminate */
254		if ((sep = strchr(buf, '\n')))
255			*sep = '\0';
256
257		/* handle backslash line continuations */
258		while (buf[strlen(buf) - 1] == '\\') {
259			fgets((char *)&buf[strlen(buf) - 1],
260					sizeof(buf) - strlen(buf), ifp);
261			if ((sep = strchr(buf, '\n')))
262				*sep = '\0';
263		}
264
265		/* find the separation between the key and data */
266		if ((sep = strpbrk(buf, " \t")) == NULL) {
267			warnx("bad input -- no white space: %s", buf);
268			continue;
269		}
270
271		/* separate the strings */
272		keybuf = (char *)&buf;
273		datbuf = sep + 1;
274		*sep = '\0';
275
276		/* set datbuf to start at first non-whitespace character */
277		while (*datbuf == ' ' || *datbuf == '\t')
278			datbuf++;
279
280		/* Check for silliness. */
281		if (filter_plusminus) {
282			if  (*keybuf == '+' || *keybuf == '-' ||
283			     *datbuf == '+' || *datbuf == '-') {
284				warnx("bad character at "
285				    "start of line: %s", buf);
286				continue;
287			}
288		}
289
290		if (strlen(keybuf) > YPMAXRECORD) {
291			warnx("key too long: %s", keybuf);
292			continue;
293		}
294
295		if (!strlen(keybuf)) {
296			warnx("no key -- check source file for blank lines");
297			continue;
298		}
299
300		if (strlen(datbuf) > YPMAXRECORD) {
301			warnx("data too long: %s", datbuf);
302			continue;
303		}
304
305		key.data = keybuf;
306		key.size = strlen(keybuf);
307		data.data = datbuf;
308		data.size = strlen(datbuf);
309
310		if ((rval = yp_put_record(dbp, &key, &data, 0)) != YP_TRUE) {
311			switch (rval) {
312			case YP_FALSE:
313				warnx("duplicate key '%s' - skipping", keybuf);
314				break;
315			case YP_BADDB:
316			default:
317				err(1,"failed to write new record - exiting");
318				break;
319			}
320		}
321
322	}
323
324	(void)(dbp->close)(dbp);
325
326doclear:
327	if (clear) {
328		char in = 0;
329		char *out = NULL;
330		int stat;
331		if ((stat = callrpc("localhost", YPPROG,YPVERS, YPPROC_CLEAR,
332			(xdrproc_t)xdr_void, &in,
333			(xdrproc_t)xdr_void, out)) != RPC_SUCCESS) {
334			warnx("failed to send 'clear' to local ypserv: %s",
335				clnt_sperrno((enum clnt_stat) stat));
336		}
337	}
338
339	exit(0);
340}
341