xref: /netbsd/usr.bin/mail/temp.c (revision bf9ec67e)
1 /*	$NetBSD: temp.c,v 1.15 2002/03/06 17:36:44 wiz Exp $	*/
2 
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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 #if 0
39 static char sccsid[] = "@(#)temp.c	8.1 (Berkeley) 6/6/93";
40 #else
41 __RCSID("$NetBSD: temp.c,v 1.15 2002/03/06 17:36:44 wiz Exp $");
42 #endif
43 #endif /* not lint */
44 
45 #include "rcv.h"
46 #include "extern.h"
47 
48 /*
49  * Mail -- a mail program
50  *
51  * Give names to all the temporary files that we will need.
52  */
53 
54 char	*tmpdir;
55 
56 void
57 tinit(void)
58 {
59 	const char *cp;
60 	char *p;
61 
62 	if ((tmpdir = getenv("TMPDIR")) == NULL || *tmpdir == '\0')
63 		tmpdir = _PATH_TMP;
64 
65 	if ((tmpdir = strdup(tmpdir)) == NULL)
66 		errx(1, "Out of memory");
67 
68 	/* Remove trailing slashes. */
69 	p = tmpdir + strlen(tmpdir) - 1;
70 	while (p > tmpdir && *p == '/') {
71 		*p = '\0';
72 		p--;
73 	}
74 
75 	/*
76 	 * It's okay to call savestr in here because main will
77 	 * do a spreserve() after us.
78 	 */
79 	if (myname != NULL) {
80 		if (getuserid(myname) < 0)
81 			errx(1, "\"%s\" is not a user of this system", myname);
82 	} else {
83 		if ((cp = username()) == NULL) {
84 			myname = "nobody";
85 			if (rcvmode)
86 				exit(1);
87 		} else
88 			myname = savestr(cp);
89 	}
90 	if ((cp = getenv("HOME")) == NULL)
91 		cp = ".";
92 	homedir = savestr(cp);
93 	if (debug)
94 		printf("user = %s, homedir = %s\n", myname, homedir);
95 }
96