1/*	$OpenBSD: makedbm.c,v 1.33 2015/02/09 23:00:15 deraadt Exp $ */
2
3/*
4 * Copyright (c) 1994-97 Mats O Jansson <moj@stacken.kth.se>
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <fcntl.h>
32#include <ctype.h>
33#include <sys/stat.h>
34#include <unistd.h>
35#include <string.h>
36#include <errno.h>
37#include "ypdb.h"
38#include "ypdef.h"
39#include "db.h"
40
41extern char *__progname;		/* from crt0.o */
42
43/*
44 * Read one line
45 */
46
47static int
48read_line(FILE *fp, char *buf, int size)
49{
50	int	done = 0;
51
52	do {
53		while (fgets(buf, size, fp)) {
54			int len = strlen(buf);
55
56			done += len;
57			if (len > 1 && buf[len-2] == '\\' &&
58			    buf[len-1] == '\n') {
59				int ch;
60
61				buf += len - 2;
62				size -= len - 2;
63				*buf = '\n'; buf[1] = '\0';
64
65				/* Skip leading white space on next line */
66				while ((ch = getc(fp)) != EOF &&
67				    isascii(ch) && isspace(ch))
68					;
69				(void) ungetc(ch, fp);
70			} else {
71				return done;
72			}
73		}
74	} while (size > 0 && !feof(fp));
75	return done;
76}
77
78static void
79add_record(DBM *db, char *str1, char *str2, int check)
80{
81	datum   key, val;
82	int	status;
83
84	key.dptr = str1;
85	key.dsize = strlen(str1);
86
87	if (check) {
88		val = ypdb_fetch(db, key);
89
90		if (val.dptr != NULL)
91			return;		/* already there */
92	}
93
94	val.dptr = str2;
95	val.dsize = strlen(str2);
96	status = ypdb_store(db, key, val, YPDB_INSERT);
97
98	if (status != 0) {
99		printf("%s: problem storing %s %s\n",
100		    __progname, str1, str2);
101		exit(1);
102	}
103}
104
105static char *
106file_date(char *filename)
107{
108	struct	stat finfo;
109	static	char datestr[11];
110	int	status;
111
112	if (strcmp(filename,"-") == 0) {
113		snprintf(datestr, sizeof datestr, "%010lld",
114		    (long long)time(0));
115	} else {
116		status = stat(filename, &finfo);
117		if (status < 0) {
118			fprintf(stderr, "%s: can't stat %s\n", __progname, filename);
119			exit(1);
120		}
121		snprintf(datestr, sizeof datestr, "%010lld",
122		    (long long)finfo.st_mtime);
123	}
124	return datestr;
125}
126
127static void
128list_database(char *database, int Uflag)
129{
130	DBM	*db;
131	datum	key, val;
132
133	db = ypdb_open(database, O_RDONLY, 0444);
134
135	if (db == NULL) {
136		if (Uflag != 0)
137			if (db_hash_list_database(database))
138				return;
139
140		fprintf(stderr, "%s: can't open database %s: %s\n", __progname,
141		    database, strerror(errno));
142		exit(1);
143	}
144
145	key = ypdb_firstkey(db);
146
147	while (key.dptr != NULL) {
148		val = ypdb_fetch(db, key);
149		printf("%*.*s %*.*s\n",
150		    key.dsize, key.dsize, key.dptr,
151		    val.dsize, val.dsize, val.dptr);
152		key = ypdb_nextkey(db);
153	}
154	ypdb_close(db);
155}
156
157static void
158create_database(char *infile, char *database, char *yp_input_file,
159    char *yp_output_file, char *yp_master_name, char *yp_domain_name,
160    int bflag, int lflag, int sflag)
161{
162	FILE	*data_file;
163	char	data_line[4096]; /* XXX: DB bsize = 4096 in ypdb.c */
164	char	myname[HOST_NAME_MAX+1];
165	int	line_no = 0, len;
166	char	*p, *k, *v, *slash;
167	DBM	*new_db;
168	static	char mapname[] = "ypdbXXXXXXXXXX";
169	char	db_mapname[PATH_MAX], db_outfile[PATH_MAX];
170	char	db_tempname[PATH_MAX], empty_str[] = "";
171
172	if (strcmp(infile,"-") == 0) {
173		data_file = stdin;
174	} else {
175		data_file = fopen(infile, "r");
176		if (errno != 0) {
177			(void)fprintf(stderr,"%s: ", __progname);
178			perror(infile);
179			exit(1);
180		}
181	}
182
183	if (strlen(database) + strlen(YPDB_SUFFIX) > PATH_MAX) {
184		fprintf(stderr,"%s: %s: file name too long\n",
185		    __progname, database);
186		exit(1);
187	}
188	snprintf(db_outfile, sizeof(db_outfile), "%s%s", database, YPDB_SUFFIX);
189
190	slash = strrchr(database, '/');
191	if (slash != NULL)
192		slash[1] = 0;			/* truncate to dir */
193	else
194		*database = 0;			/* eliminate */
195
196	/* note: database is now directory where map goes ! */
197
198	if (strlen(database) + strlen(mapname) +
199	    strlen(YPDB_SUFFIX) > PATH_MAX) {
200		fprintf(stderr,"%s: %s: directory name too long\n",
201		    __progname, database);
202		exit(1);
203	}
204
205	snprintf(db_mapname, sizeof(db_mapname), "%s%s%s",
206	    database, mapname, YPDB_SUFFIX);
207	mkstemps(db_mapname, sizeof(YPDB_SUFFIX));
208	strlcpy(db_tempname, db_mapname, sizeof db_tempname);
209	db_tempname[strlen(db_tempname) - sizeof(YPDB_SUFFIX) + 1] = '\0';
210
211	new_db = ypdb_open(db_tempname, O_RDWR|O_CREAT, 0444);
212	if (new_db == NULL) {
213		fprintf(stderr, "%s: Unable to open output database %s\n",
214		    __progname, db_outfile);
215		exit(1);
216	}
217
218	while (read_line(data_file, data_line, sizeof(data_line))) {
219		line_no++;
220		len =  strlen(data_line);
221
222		/* Check if we have the whole line */
223
224		if (data_line[len-1] != '\n') {
225			fprintf(stderr, "line %d in \"%s\" is too long",
226			    line_no, infile);
227		} else {
228			data_line[len-1] = '\0';
229		}
230
231		p = (char *) &data_line;
232
233		k = p;				   	 /* save start of key */
234		while (!isspace((unsigned char)*p)) {	    	/* find first "space" */
235			if (lflag && isupper((unsigned char)*p))   	/* if force lower case */
236				*p = (char)tolower((unsigned char)*p);   /* fix it */
237			p++;
238		}
239		while (isspace((unsigned char)*p)) {		/* replace space with <NUL> */
240			*p = '\0';
241			p++;
242		}
243
244		v = p;				/* save start of value */
245		while (*p != '\0')		/* find end of string */
246			p++;
247
248		add_record(new_db, k, v, TRUE);	/* save record */
249
250	}
251
252	if (strcmp(infile,"-") != 0)
253		(void) fclose(data_file);
254
255	add_record(new_db, YP_LAST_KEY, file_date(infile), FALSE);
256
257	if (yp_input_file)
258		add_record(new_db, YP_INPUT_KEY, yp_input_file, FALSE);
259
260	if (yp_output_file)
261		add_record(new_db, YP_OUTPUT_KEY, yp_output_file, FALSE);
262
263	if (yp_master_name)
264		add_record(new_db, YP_MASTER_KEY, yp_master_name, FALSE);
265	else {
266		gethostname(myname, sizeof(myname));
267		add_record(new_db, YP_MASTER_KEY, myname, FALSE);
268	}
269
270	if (yp_domain_name)
271		add_record(new_db, YP_DOMAIN_KEY, yp_domain_name, FALSE);
272	if (bflag)
273		add_record(new_db, YP_INTERDOMAIN_KEY, empty_str, FALSE);
274	if (sflag)
275		add_record(new_db, YP_SECURE_KEY, empty_str, FALSE);
276
277	ypdb_close(new_db);
278	if (rename(db_mapname, db_outfile) < 0) {
279		perror("rename");
280		fprintf(stderr,"rename %s -> %s failed!\n", db_mapname,
281		    db_outfile);
282		exit(1);
283	}
284
285}
286
287static void
288usage(void)
289{
290	fprintf(stderr,"usage: makedbm [-blsUu] [-d yp_domain_name] "
291	    "[-i yp_input_file]\n"
292	    "\t[-m yp_master_name] [-o yp_output_file] infile outfile\n");
293	exit(1);
294}
295
296int
297main(int argc, char *argv[])
298{
299	int	aflag, uflag, bflag, lflag, sflag, Uflag;
300	char	*yp_input_file, *yp_output_file;
301	char	*yp_master_name, *yp_domain_name;
302	char	*infile, *outfile;
303	int	ch;
304
305	extern int optind;
306	extern char *optarg;
307
308	yp_input_file = yp_output_file = NULL;
309	yp_master_name = yp_domain_name = NULL;
310	aflag = uflag = bflag = lflag = sflag = Uflag = 0;
311	infile = outfile = NULL;
312
313	while ((ch = getopt(argc, argv, "Ublsui:o:m:d:")) != -1)
314		switch (ch) {
315		case 'U':
316			uflag = 1;
317			Uflag = 1;
318			break;
319		case 'b':
320			bflag = 1;
321			aflag = 1;
322			break;
323		case 'l':
324			lflag = 1;
325			aflag = 1;
326			break;
327		case 's':
328			sflag = 1;
329			aflag = 1;
330			break;
331		case 'i':
332			yp_input_file = optarg;
333			aflag = 1;
334			break;
335		case 'o':
336			yp_output_file = optarg;
337			aflag = 1;
338			break;
339		case 'm':
340			yp_master_name = optarg;
341			aflag = 1;
342			break;
343		case 'd':
344			yp_domain_name = optarg;
345			aflag = 1;
346			break;
347		case 'u':
348			uflag = 1;
349			break;
350		default:
351			usage();
352			break;
353		}
354
355	if ((uflag != 0) && (aflag != 0))
356		usage();
357
358	if (uflag != 0) {
359		if (argc == (optind + 1))
360			infile = argv[optind];
361		else
362			usage();
363	} else {
364		if (argc == (optind + 2)) {
365			infile = argv[optind];
366			outfile = argv[optind+1];
367		} else
368			usage();
369	}
370
371	if (uflag != 0) {
372		list_database(infile,Uflag);
373	} else {
374		create_database(infile, outfile, yp_input_file,
375		    yp_output_file, yp_master_name, yp_domain_name,
376		    bflag, lflag, sflag);
377	}
378
379	return(0);
380}
381