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 * 4. 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
30 #ifndef lint
31 #if 0
32 static char sccsid[] = "@(#)v7.local.c 8.1 (Berkeley) 6/6/93";
33 #endif
34 #endif /* not lint */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 /*
39 * Mail -- a mail program
40 *
41 * Version 7
42 *
43 * Local routines that are installation dependent.
44 */
45
46 #include "rcv.h"
47 #include <fcntl.h>
48 #include "extern.h"
49
50 /*
51 * Locate the user's mailbox file (ie, the place where new, unread
52 * mail is queued).
53 */
54 void
findmail(char * user,char * buf,int buflen)55 findmail(char *user, char *buf, int buflen)
56 {
57 char *tmp = getenv("MAIL");
58
59 if (tmp == NULL)
60 (void)snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user);
61 else
62 (void)strlcpy(buf, tmp, buflen);
63 }
64
65 /*
66 * Get rid of the queued mail.
67 */
68 void
demail(void)69 demail(void)
70 {
71
72 if (value("keep") != NULL || rm(mailname) < 0)
73 (void)close(open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600));
74 }
75
76 /*
77 * Discover user login name.
78 */
79 char *
username(void)80 username(void)
81 {
82 char *np;
83 uid_t uid;
84
85 if ((np = getenv("USER")) != NULL)
86 return (np);
87 if ((np = getenv("LOGNAME")) != NULL)
88 return (np);
89 if ((np = getname(uid = getuid())) != NULL)
90 return (np);
91 printf("Cannot associate a name with uid %u\n", (unsigned)uid);
92 return (NULL);
93 }
94