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#include "rcv.h"
33#include "extern.h"
34
35/*
36 * Mail -- a mail program
37 *
38 * Give names to all the temporary files that we will need.
39 */
40
41char	*tmpdir;
42
43void
44tinit(void)
45{
46	char *cp;
47
48	if ((tmpdir = getenv("TMPDIR")) == NULL || *tmpdir == '\0')
49		tmpdir = _PATH_TMP;
50	if ((tmpdir = strdup(tmpdir)) == NULL)
51		errx(1, "Out of memory");
52	/* Strip trailing '/' if necessary */
53	cp = tmpdir + strlen(tmpdir) - 1;
54	while (cp > tmpdir && *cp == '/') {
55		*cp = '\0';
56		cp--;
57	}
58
59	/*
60	 * It's okay to call savestr in here because main will
61	 * do a spreserve() after us.
62	 */
63	if (myname != NULL) {
64		if (getuserid(myname) < 0)
65			errx(1, "\"%s\" is not a user of this system", myname);
66	} else {
67		if ((cp = username()) == NULL) {
68			myname = "ubluit";
69			if (rcvmode)
70				errx(1, "Who are you!?");
71		} else
72			myname = savestr(cp);
73	}
74	if ((cp = getenv("HOME")) == NULL || *cp == '\0' ||
75	    strlen(cp) >= PATHSIZE)
76		homedir = NULL;
77	else
78		homedir = savestr(cp);
79	if (debug)
80		printf("user = %s, homedir = %s\n", myname,
81		    homedir ? homedir : "NONE");
82}
83