1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 1998 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30
31/*
32 * University Copyright- Copyright (c) 1982, 1986, 1988
33 * The Regents of the University of California
34 * All Rights Reserved
35 *
36 * University Acknowledgment- Portions of this document are derived from
37 * software developed by the University of California, Berkeley, and its
38 * contributors.
39 */
40
41#pragma ident	"%Z%%M%	%I%	%E% SMI"
42
43/*
44 * mailx -- a modified version of a University of California at Berkeley
45 *	mail program
46 *
47 * Local routines that are installation dependent.
48 */
49
50#include "rcv.h"
51
52static	int ismailbox(char *file);
53
54/*
55 * Locate the user's mailbox file (ie, the place where new, unread
56 * mail is queued).  In SVr4 UNIX, it is in /var/mail/name.
57 * In preSVr4 UNIX, it is in either /usr/mail/name or /usr/spool/mail/name.
58 */
59void
60findmail(char *name)
61{
62	register char *cp;
63
64	if (name != NOSTR) {
65		copy(name, copy(maildir, mailname));
66		issysmbox = 1;	/* it's a system mailbox */
67	} else if ((cp = getenv("MAIL")) != NULL) {
68		/* if $MAIL is set, use it */
69		nstrcpy(mailname, PATHSIZE, cp);
70		issysmbox = ismailbox(mailname);
71		/* XXX - should warn that there's no locking? */
72	} else {
73		copy(myname, copy(maildir, mailname));
74		issysmbox = 1;
75	}
76	if (issysmbox)
77		lockname = strrchr(mailname, '/') + 1;
78}
79
80/*
81 * Make sure file matches (/usr|/var)(/spool)?/mail/.
82 * If is does, it's a "system mailbox", return true.
83 */
84static int
85ismailbox(char *file)
86{
87#ifdef preSVr4
88	return (strncmp(file, maildir, strlen(maildir)) == 0);
89#else
90	if (strncmp(file, "/var", 4) != 0
91	    && strncmp(file, "/usr", 4) != 0
92	    )
93		return (0);
94	file += 4;
95	if (strncmp(file, "/spool", 6) == 0)
96		file += 6;
97	return (strncmp(file, "/mail/", 6) == 0);
98#endif
99}
100