1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1995
5 *	Bill Paul <wpaul@ctr.columbia.edu>.  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
35#include <sys/cdefs.h>
36#include <db.h>
37#include <errno.h>
38#include <fcntl.h>
39#include <limits.h>
40#include <paths.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44#include <unistd.h>
45#include <sys/stat.h>
46#include <rpcsvc/yp.h>
47#include "ypxfr_extern.h"
48
49#define PERM_SECURE (S_IRUSR|S_IWUSR)
50
51/*
52 * Open a DB database read/write
53 */
54DB *
55yp_open_db_rw(const char *domain, const char *map, const int flags)
56{
57	DB *dbp;
58	char buf[1025];
59
60
61	yp_errno = YP_TRUE;
62
63	if (map[0] == '.' || strchr(map, '/')) {
64		yp_errno = YP_BADARGS;
65		return (NULL);
66	}
67
68#define FLAGS O_RDWR|O_EXLOCK|O_EXCL|O_CREAT
69
70	snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, domain, map);
71	dbp = dbopen(buf,flags ? flags : FLAGS,PERM_SECURE,DB_HASH,&openinfo);
72
73	if (dbp == NULL) {
74		switch (errno) {
75		case ENOENT:
76			yp_errno = YP_NOMAP;
77			break;
78		case EFTYPE:
79			yp_errno = YP_BADDB;
80			break;
81		default:
82			yp_errno = YP_YPERR;
83			break;
84		}
85	}
86
87	return (dbp);
88}
89
90int
91yp_put_record(DB *dbp, DBT *key, DBT *data, int allow_overwrite)
92{
93	int rval;
94
95	if ((rval = (dbp->put)(dbp,key,data, allow_overwrite ? 0 :
96							R_NOOVERWRITE))) {
97		switch (rval) {
98		case 1:
99			return(YP_FALSE);
100			break;
101		case -1:
102		default:
103			(void)(dbp->close)(dbp);
104			return(YP_BADDB);
105			break;
106		}
107	}
108
109	return(YP_TRUE);
110}
111