1 /* $NetBSD: v7.local.c,v 1.18 2006/11/28 18:45:32 christos 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. 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 <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)v7.local.c 8.1 (Berkeley) 6/6/93";
36 #else
37 __RCSID("$NetBSD: v7.local.c,v 1.18 2006/11/28 18:45:32 christos Exp $");
38 #endif
39 #endif /* not lint */
40
41 /*
42 * Mail -- a mail program
43 *
44 * Version 7
45 *
46 * Local routines that are installation dependent.
47 */
48
49 #include "rcv.h"
50 #include "extern.h"
51
52 /*
53 * Locate the user's mailbox file (ie, the place where new, unread
54 * mail is queued).
55 */
56 PUBLIC void
findmail(const char * user,char * buf,size_t bufsize)57 findmail(const char *user, char *buf, size_t bufsize)
58 {
59 char *mbox;
60
61 if (!(mbox = getenv("MAIL")))
62 (void)snprintf(buf, bufsize, "%s/%s", _PATH_MAILDIR, user);
63 else
64 (void)strlcpy(buf, mbox, bufsize);
65 }
66
67 /*
68 * Get rid of the queued mail.
69 */
70 PUBLIC void
demail(void)71 demail(void)
72 {
73
74 int fd;
75 /*
76 * Do not remove the spool file, just truncate it to zero
77 * bytes if possible, since we wouldn't preserve
78 * owner/permissions otherwise.
79 */
80 if (value(ENAME_KEEP) != NULL || truncate(mailname, (off_t)0) < 0)
81 if ((fd = creat(mailname, 0600)) != -1)
82 (void)close(fd);
83 }
84
85 /*
86 * Discover user login name.
87 */
88 PUBLIC const char *
username(void)89 username(void)
90 {
91 const char *np;
92 uid_t uid;
93
94 if ((np = getenv("USER")) != NULL)
95 return np;
96 if ((np = getname(uid = getuid())) != NULL)
97 return np;
98 (void)printf("Cannot associate a name with uid %u\n", (unsigned)uid);
99 return NULL;
100 }
101