NetBSD/usr.bin/mail/v7.local.c

101 lines
2.9 KiB
C

/* $NetBSD: v7.local.c,v 1.16 2005/07/19 23:07:10 christos Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)v7.local.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: v7.local.c,v 1.16 2005/07/19 23:07:10 christos Exp $");
#endif
#endif /* not lint */
/*
* Mail -- a mail program
*
* Version 7
*
* Local routines that are installation dependent.
*/
#include "rcv.h"
#include "extern.h"
/*
* Locate the user's mailbox file (ie, the place where new, unread
* mail is queued).
*/
void
findmail(const char *user, char *buf)
{
char *mbox;
if (!(mbox = getenv("MAIL")))
(void)snprintf(buf, PATHSIZE, "%s/%s", _PATH_MAILDIR, user);
else {
(void)strncpy(buf, mbox, PATHSIZE - 1);
buf[PATHSIZE - 1] = '\0';
}
}
/*
* Get rid of the queued mail.
*/
void
demail(void)
{
/*
* Do not remove the spool file, just truncate it to zero
* bytes if possible, since we wouldn't preserve
* owner/permissions otherwise.
*/
if (value("keep") != NULL || truncate(mailname, (off_t)0) < 0)
(void)close(creat(mailname, 0600));
}
/*
* Discover user login name.
*/
const char *
username(void)
{
const char *np;
uid_t uid;
if ((np = getenv("USER")) != NULL)
return np;
if ((np = getname(uid = getuid())) != NULL)
return np;
(void)printf("Cannot associate a name with uid %u\n", (unsigned)uid);
return NULL;
}