temp.c revision 99112 
1/*
2 * Copyright (c) 1980, 1993
3 *	The Regents of the University of California.  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 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)temp.c	8.1 (Berkeley) 6/6/93";
37#endif
38#endif /* not lint */
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD: head/usr.bin/mail/temp.c 99112 2002-06-30 05:25:07Z obrien $");
41
42#include "rcv.h"
43#include "extern.h"
44
45/*
46 * Mail -- a mail program
47 *
48 * Give names to all the temporary files that we will need.
49 */
50
51char	*tmpdir;
52
53void
54tinit()
55{
56	char *cp;
57
58	if ((tmpdir = getenv("TMPDIR")) == NULL || *tmpdir == '\0')
59		tmpdir = _PATH_TMP;
60	if ((tmpdir = strdup(tmpdir)) == NULL)
61		errx(1, "Out of memory");
62	/* Strip trailing '/' if necessary */
63	cp = tmpdir + strlen(tmpdir) - 1;
64	while (cp > tmpdir && *cp == '/') {
65		*cp = '\0';
66		cp--;
67	}
68
69	/*
70	 * It's okay to call savestr in here because main will
71	 * do a spreserve() after us.
72	 */
73	if (myname != NULL) {
74		if (getuserid(myname) < 0)
75			errx(1, "\"%s\" is not a user of this system", myname);
76	} else {
77		if ((cp = username()) == NULL) {
78			myname = "ubluit";
79			if (rcvmode)
80				errx(1, "Who are you!?");
81		} else
82			myname = savestr(cp);
83	}
84	if ((cp = getenv("HOME")) == NULL || *cp == '\0' ||
85	    strlen(cp) >= PATHSIZE)
86		homedir = NULL;
87	else
88		homedir = savestr(cp);
89	if (debug)
90		printf("user = %s, homedir = %s\n", myname,
91		    homedir ? homedir : "NONE");
92}
93