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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)v7.local.c 8.1 (Berkeley) 6/6/93
30 * $FreeBSD: src/usr.bin/mail/v7.local.c,v 1.2.8.3 2003/01/06 05:46:04 mikeh Exp $
31 * $DragonFly: src/usr.bin/mail/v7.local.c,v 1.4 2004/09/08 03:01:11 joerg Exp $
32 */
33
34 /*
35 * Mail -- a mail program
36 *
37 * Version 7
38 *
39 * Local routines that are installation dependent.
40 */
41
42 #include "rcv.h"
43 #include <fcntl.h>
44 #include "extern.h"
45
46 /*
47 * Locate the user's mailbox file (ie, the place where new, unread
48 * mail is queued).
49 */
50 void
findmail(char * user,char * buf,int buflen)51 findmail(char *user, char *buf, int buflen)
52 {
53 char *tmp = getenv("MAIL");
54
55 if (tmp == NULL)
56 snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user);
57 else
58 strlcpy(buf, tmp, buflen);
59 }
60
61 /*
62 * Get rid of the queued mail.
63 */
64 void
demail(void)65 demail(void)
66 {
67 if (value("keep") != NULL || rm(mailname) < 0)
68 close(open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600));
69 }
70
71 /*
72 * Discover user login name.
73 */
74 char *
username(void)75 username(void)
76 {
77 char *np;
78 uid_t uid;
79
80 if ((np = getenv("USER")) != NULL)
81 return (np);
82 if ((np = getenv("LOGNAME")) != NULL)
83 return (np);
84 if ((np = getname(uid = getuid())) != NULL)
85 return (np);
86 printf("Cannot associate a name with uid %u\n", (unsigned)uid);
87 return (NULL);
88 }
89