xref: /dragonfly/usr.sbin/yp_mkdb/yp_mkdb.c (revision f8f04fe3) 
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  * $FreeBSD: src/usr.sbin/yp_mkdb/yp_mkdb.c,v 1.12.2.1 2002/02/15 00:46:59 des Exp $
33  * $DragonFly: src/usr.sbin/yp_mkdb/yp_mkdb.c,v 1.4 2005/11/24 22:23:02 swildner Exp $
34  */
35 
36 #include <err.h>
37 #include <fcntl.h>
38 #include <limits.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <time.h>
43 #include <unistd.h>
44 #include <rpc/rpc.h>
45 #include <rpcsvc/yp.h>
46 #include <sys/param.h>
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #include "yp_extern.h"
50 #include "ypxfr_extern.h"
51 
52 char *yp_dir = "";	/* No particular default needed. */
53 int _rpcpmstart = 0;
54 int debug = 1;
55 
56 static void
57 usage(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)
68 
69 static DB *
70 open_db(char *path, int flags)
71 {
72 	extern HASHINFO openinfo;
73 
74 	return(dbopen(path, flags, PERM_SECURE, DB_HASH, &openinfo));
75 }
76 
77 static void
78 unwind(char *map)
79 {
80 	DB *dbp;
81 	DBT key, data;
82 
83 	dbp = open_db(map, O_RDONLY);
84 
85 	if (dbp == NULL)
86 		err(1, "open_db(%s) failed", map);
87 
88 	key.data = NULL;
89 	while (yp_next_record(dbp, &key, &data, 1, 1) == YP_TRUE)
90 		printf("%.*s %.*s\n", key.size,key.data,data.size,data.data);
91 
92 	dbp->close(dbp);
93 	return;
94 }
95 
96 int
97 main(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 
187 	if (!strcmp(infile, "-")) {
188 		ifp = stdin;
189 	} else {
190 		if ((ifp = fopen(infile, "r")) == NULL)
191 			err(1, "failed to open %s", infile);
192 	}
193 
194 	if ((dbp = open_db(map, O_RDWR|O_EXLOCK|O_EXCL|O_CREAT)) == NULL)
195 		err(1, "open_db(%s) failed", map);
196 
197 	if (interdom) {
198 		key.data = "YP_INTERDOMAIN";
199 		key.size = sizeof("YP_INTERDOMAIN") - 1;
200 		data.data = "";
201 		data.size = 0;
202 		yp_put_record(dbp, &key, &data, 0);
203 	}
204 
205 	if (secure) {
206 		key.data = "YP_SECURE";
207 		key.size = sizeof("YP_SECURE") - 1;
208 		data.data = "";
209 		data.size = 0;
210 		yp_put_record(dbp, &key, &data, 0);
211 	}
212 
213 	key.data = "YP_MASTER_NAME";
214 	key.size = sizeof("YP_MASTER_NAME") - 1;
215 	data.data = mastername;
216 	data.size = strlen(mastername);
217 	yp_put_record(dbp, &key, &data, 0);
218 
219 	key.data = "YP_LAST_MODIFIED";
220 	key.size = sizeof("YP_LAST_MODIFIED") - 1;
221 	snprintf(buf, sizeof(buf), "%lu", time(NULL));
222 	data.data = (char *)&buf;
223 	data.size = strlen(buf);
224 	yp_put_record(dbp, &key, &data, 0);
225 
226 	if (infilename) {
227 		key.data = "YP_INPUT_FILE";
228 		key.size = sizeof("YP_INPUT_FILE") - 1;
229 		data.data = infilename;
230 		data.size = strlen(infilename);
231 		yp_put_record(dbp, &key, &data, 0);
232 	}
233 
234 	if (outfilename) {
235 		key.data = "YP_OUTPUT_FILE";
236 		key.size = sizeof("YP_OUTPUT_FILE") - 1;
237 		data.data = outfilename;
238 		data.size = strlen(outfilename);
239 		yp_put_record(dbp, &key, &data, 0);
240 	}
241 
242 	if (domain) {
243 		key.data = "YP_DOMAIN_NAME";
244 		key.size = sizeof("YP_DOMAIN_NAME") - 1;
245 		data.data = domain;
246 		data.size = strlen(domain);
247 		yp_put_record(dbp, &key, &data, 0);
248 	}
249 
250 	while (fgets((char *)&buf, sizeof(buf), ifp)) {
251 		char *sep = NULL;
252 		int rval;
253 
254 		/* NUL terminate */
255 		if ((sep = strchr(buf, '\n')))
256 			*sep = '\0';
257 
258 		/* handle backslash line continuations */
259 		while (buf[strlen(buf) - 1] == '\\') {
260 			fgets((char *)&buf[strlen(buf) - 1],
261 					sizeof(buf) - strlen(buf), ifp);
262 			if ((sep = strchr(buf, '\n')))
263 				*sep = '\0';
264 		}
265 
266 		/* find the separation between the key and data */
267 		if ((sep = strpbrk(buf, " \t")) == NULL) {
268 			warnx("bad input -- no white space: %s", buf);
269 			continue;
270 		}
271 
272 		/* separate the strings */
273 		keybuf = (char *)&buf;
274 		datbuf = sep + 1;
275 		*sep = '\0';
276 
277 		/* set datbuf to start at first non-whitespace character */
278 		while (*datbuf == ' ' || *datbuf == '\t')
279 			datbuf++;
280 
281 		/* Check for silliness. */
282 		if (filter_plusminus) {
283 			if  (*keybuf == '+' || *keybuf == '-' ||
284 			     *datbuf == '+' || *datbuf == '-') {
285 				warnx("bad character at "
286 				    "start of line: %s", buf);
287 				continue;
288 			}
289 		}
290 
291 		if (strlen(keybuf) > YPMAXRECORD) {
292 			warnx("key too long: %s", keybuf);
293 			continue;
294 		}
295 
296 		if (!strlen(keybuf)) {
297 			warnx("no key -- check source file for blank lines");
298 			continue;
299 		}
300 
301 		if (strlen(datbuf) > YPMAXRECORD) {
302 			warnx("data too long: %s", datbuf);
303 			continue;
304 		}
305 
306 		key.data = keybuf;
307 		key.size = strlen(keybuf);
308 		data.data = datbuf;
309 		data.size = strlen(datbuf);
310 
311 		if ((rval = yp_put_record(dbp, &key, &data, 0)) != YP_TRUE) {
312 			switch (rval) {
313 			case YP_FALSE:
314 				warnx("duplicate key '%s' - skipping", keybuf);
315 				break;
316 			case YP_BADDB:
317 			default:
318 				err(1,"failed to write new record - exiting");
319 				break;
320 			}
321 		}
322 
323 	}
324 
325 	dbp->close(dbp);
326 
327 doclear:
328 
329 	if (clear) {
330 		char in = 0;
331 		char *out = NULL;
332 		int stat;
333 		if ((stat = callrpc("localhost",YPPROG,YPVERS,YPPROC_CLEAR,
334 			xdr_void, (void *)&in,
335 			xdr_void, (void *)out)) != RPC_SUCCESS) {
336 			warnx("failed to send 'clear' to local ypserv: %s",
337 				clnt_sperrno((enum clnt_stat) stat));
338 		}
339 	}
340 
341 	exit(0);
342 }
343