1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1993
5 *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#ifndef lint
33#if 0
34static char sccsid[] = "@(#)temp.c	8.1 (Berkeley) 6/6/93";
35#endif
36#endif /* not lint */
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40#include "rcv.h"
41#include "extern.h"
42
43/*
44 * Mail -- a mail program
45 *
46 * Give names to all the temporary files that we will need.
47 */
48
49char	*tmpdir;
50
51void
52tinit(void)
53{
54	char *cp;
55
56	if ((tmpdir = getenv("TMPDIR")) == NULL || *tmpdir == '\0')
57		tmpdir = _PATH_TMP;
58	if ((tmpdir = strdup(tmpdir)) == NULL)
59		errx(1, "Out of memory");
60	/* Strip trailing '/' if necessary */
61	cp = tmpdir + strlen(tmpdir) - 1;
62	while (cp > tmpdir && *cp == '/') {
63		*cp = '\0';
64		cp--;
65	}
66
67	/*
68	 * It's okay to call savestr in here because main will
69	 * do a spreserve() after us.
70	 */
71	if (myname != NULL) {
72		if (getuserid(myname) < 0)
73			errx(1, "\"%s\" is not a user of this system", myname);
74	} else {
75		if ((cp = username()) == NULL) {
76			myname = "ubluit";
77			if (rcvmode)
78				errx(1, "Who are you!?");
79		} else
80			myname = savestr(cp);
81	}
82	if ((cp = getenv("HOME")) == NULL || *cp == '\0' ||
83	    strlen(cp) >= PATHSIZE)
84		homedir = NULL;
85	else
86		homedir = savestr(cp);
87	if (debug)
88		printf("user = %s, homedir = %s\n", myname,
89		    homedir ? homedir : "NONE");
90}
91