Annotation of src/usr.bin/mail/v7.local.c, Revision 1.15
1.15 ! deraadt 1: /* $OpenBSD: v7.local.c,v 1.14 2003/06/03 02:56:11 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: /*
34: * Mail -- a mail program
35: *
36: * Version 7
37: *
38: * Local routines that are installation dependent.
39: */
40:
41: #include "rcv.h"
42: #include <stdlib.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
1.13 millert 51: findmail(char *user, char *buf, int buflen)
1.1 deraadt 52: {
53: char *mbox;
1.9 millert 54: struct stat sb;
1.1 deraadt 55:
1.9 millert 56: /* Ignore $MAIL if it is not owned by the invoking user */
57: if ((mbox = getenv("MAIL")) && stat(mbox, &sb) == 0 &&
58: sb.st_uid != getuid() && sb.st_uid != geteuid())
59: mbox = NULL;
60:
1.13 millert 61: if (mbox)
62: (void)strlcpy(buf, mbox, buflen);
63: else
1.9 millert 64: (void)snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user);
1.1 deraadt 65: }
66:
67: /*
68: * Get rid of the queued mail.
69: */
70: void
1.13 millert 71: demail(void)
1.1 deraadt 72: {
73:
1.12 millert 74: if (value("keep") != NULL || rm(mailname) < 0)
1.11 millert 75: (void)close(creat(mailname, 0600));
1.1 deraadt 76: }
77:
78: /*
79: * Discover user login name.
80: */
81: char *
1.13 millert 82: username(void)
1.1 deraadt 83: {
84: char *np;
1.2 deraadt 85: uid_t uid;
1.1 deraadt 86:
1.8 millert 87: if ((np = getenv("USER")) != NULL)
1.7 millert 88: return(np);
1.8 millert 89: if ((np = getenv("LOGNAME")) != NULL)
1.7 millert 90: return(np);
1.8 millert 91: if ((np = getname(uid = getuid())) != NULL)
1.13 millert 92: return(np);
93: if ((np = getlogin()) != NULL)
1.7 millert 94: return(np);
1.4 deraadt 95: printf("Cannot associate a name with uid %u\n", (unsigned)uid);
1.8 millert 96: return(NULL);
1.1 deraadt 97: }