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 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 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 * 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