1/*-
2 * Copyright (c) 2012 Eitan Adler
3 * 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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#include <sys/cdefs.h>
30
31#include "lib.h"
32#include <err.h>
33
34static const char message[] = "You appear to be using the newer pkg(1) tool on \
35this system for package management, rather than the legacy package \
36management tools (pkg_*).  The legacy tools should no longer be used on \
37this system.";
38
39void warnpkgng(void)
40{
41	char pkgngpath[MAXPATHLEN + 1];
42	char *pkgngdir;
43	char *dontwarn;
44	int rc;
45
46	dontwarn = getenv("PKG_OLD_NOWARN");
47	if (dontwarn != NULL)
48		return;
49	pkgngdir = getenv("PKG_DBDIR");
50	if (pkgngdir == NULL)
51		pkgngdir = "/var/db/pkg";
52
53	rc = snprintf(pkgngpath, sizeof(pkgngpath), "%s/local.sqlite", pkgngdir);
54	if ((size_t)rc >= sizeof(pkgngpath)) {
55		warnx("path too long: %s/local.sqlite", pkgngdir);
56		return;
57	}
58
59	if (access(pkgngpath, F_OK) == 0)
60		warnx(message);
61}
62