Annotation of src/usr.bin/mail/v7.local.c, Revision 1.14
1.14 ! millert 1: /* $OpenBSD: v7.local.c,v 1.13 2001/11/21 15:26:39 millert Exp $ */
1.7 millert 2: /* $NetBSD: v7.local.c,v 1.8 1997/05/13 06:15:58 mikel Exp $ */
1.2 deraadt 3:
1.1 deraadt 4: /*
5: * Copyright (c) 1980, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.14 ! millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
1.2 deraadt 34: #if 0
1.13 millert 35: static const char sccsid[] = "@(#)v7.local.c 8.1 (Berkeley) 6/6/93";
1.2 deraadt 36: #else
1.14 ! millert 37: static const char rcsid[] = "$OpenBSD: v7.local.c,v 1.13 2001/11/21 15:26:39 millert Exp $";
1.2 deraadt 38: #endif
1.1 deraadt 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 <stdlib.h>
51: #include <fcntl.h>
52: #include "extern.h"
53:
54: /*
55: * Locate the user's mailbox file (ie, the place where new, unread
56: * mail is queued).
57: */
58: void
1.13 millert 59: findmail(char *user, char *buf, int buflen)
1.1 deraadt 60: {
61: char *mbox;
1.9 millert 62: struct stat sb;
1.1 deraadt 63:
1.9 millert 64: /* Ignore $MAIL if it is not owned by the invoking user */
65: if ((mbox = getenv("MAIL")) && stat(mbox, &sb) == 0 &&
66: sb.st_uid != getuid() && sb.st_uid != geteuid())
67: mbox = NULL;
68:
1.13 millert 69: if (mbox)
70: (void)strlcpy(buf, mbox, buflen);
71: else
1.9 millert 72: (void)snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user);
1.1 deraadt 73: }
74:
75: /*
76: * Get rid of the queued mail.
77: */
78: void
1.13 millert 79: demail(void)
1.1 deraadt 80: {
81:
1.12 millert 82: if (value("keep") != NULL || rm(mailname) < 0)
1.11 millert 83: (void)close(creat(mailname, 0600));
1.1 deraadt 84: }
85:
86: /*
87: * Discover user login name.
88: */
89: char *
1.13 millert 90: username(void)
1.1 deraadt 91: {
92: char *np;
1.2 deraadt 93: uid_t uid;
1.1 deraadt 94:
1.8 millert 95: if ((np = getenv("USER")) != NULL)
1.7 millert 96: return(np);
1.8 millert 97: if ((np = getenv("LOGNAME")) != NULL)
1.7 millert 98: return(np);
1.8 millert 99: if ((np = getname(uid = getuid())) != NULL)
1.13 millert 100: return(np);
101: if ((np = getlogin()) != NULL)
1.7 millert 102: return(np);
1.4 deraadt 103: printf("Cannot associate a name with uid %u\n", (unsigned)uid);
1.8 millert 104: return(NULL);
1.1 deraadt 105: }