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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)v7.local.c 8.1 (Berkeley) 6/6/93"; 37 #endif 38 #endif /* not lint */ 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 /* 43 * Mail -- a mail program 44 * 45 * Version 7 46 * 47 * Local routines that are installation dependent. 48 */ 49 50 #include "rcv.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 59 findmail(user, buf, buflen) 60 char *user, *buf; 61 int buflen; 62 { 63 char *tmp = getenv("MAIL"); 64 65 if (tmp == NULL) 66 (void)snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user); 67 else 68 (void)strlcpy(buf, tmp, buflen); 69 } 70 71 /* 72 * Get rid of the queued mail. 73 */ 74 void 75 demail() 76 { 77 78 if (value("keep") != NULL || rm(mailname) < 0) 79 (void)close(open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600)); 80 } 81 82 /* 83 * Discover user login name. 84 */ 85 char * 86 username() 87 { 88 char *np; 89 uid_t uid; 90 91 if ((np = getenv("USER")) != NULL) 92 return (np); 93 if ((np = getenv("LOGNAME")) != NULL) 94 return (np); 95 if ((np = getname(uid = getuid())) != NULL) 96 return (np); 97 printf("Cannot associate a name with uid %u\n", (unsigned)uid); 98 return (NULL); 99 } 100