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 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 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 * 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