Home | History | Annotate | Line # | Download | only in mail
v7.local.c revision 1.13 
      1 /*	$NetBSD: v7.local.c,v 1.13 2002/03/12 01:17:46 wiz 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)v7.local.c	8.1 (Berkeley) 6/6/93";
     40 #else
     41 __RCSID("$NetBSD: v7.local.c,v 1.13 2002/03/12 01:17:46 wiz Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 /*
     46  * Mail -- a mail program
     47  *
     48  * Version 7
     49  *
     50  * Local routines that are installation dependent.
     51  */
     52 
     53 #include "rcv.h"
     54 #include "extern.h"
     55 
     56 /*
     57  * Locate the user's mailbox file (ie, the place where new, unread
     58  * mail is queued).
     59  */
     60 void
     61 findmail(char *user, char *buf)
     62 {
     63 	char *mbox;
     64 
     65 	if (!(mbox = getenv("MAIL")))
     66 		(void)snprintf(buf, PATHSIZE, "%s/%s", _PATH_MAILDIR, user);
     67 	else {
     68 		(void)strncpy(buf, mbox, PATHSIZE - 1);
     69 		buf[PATHSIZE - 1] = '\0';
     70 	}
     71 }
     72 
     73 /*
     74  * Get rid of the queued mail.
     75  */
     76 void
     77 demail(void)
     78 {
     79 
     80 	/*
     81 	 * Do not remove the spool file, just truncate it to zero
     82 	 * bytes if possible, since we wouldn't preserve
     83 	 * owner/permissions otherwise.
     84 	 */
     85 	if (value("keep") != NULL || truncate(mailname, 0) < 0)
     86 		(void)close(creat(mailname, 0600));
     87 }
     88 
     89 /*
     90  * Discover user login name.
     91  */
     92 const char *
     93 username(void)
     94 {
     95 	const char *np;
     96 	uid_t uid;
     97 
     98 	if ((np = getenv("USER")) != NULL)
     99 		return np;
    100 	if ((np = getname(uid = getuid())) != NULL)
    101 		return np;
    102 	printf("Cannot associate a name with uid %u\n", (unsigned)uid);
    103 	return NULL;
    104 }
    105