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/* $OpenBSD: v7.local.c,v 1.18 2018/09/16 02:38:57 millert Exp $ */
/* $NetBSD: v7.local.c,v 1.8 1997/05/13 06:15:58 mikel 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.
*/
/*
* Mail -- a mail program
*
* Version 7
*
* Local routines that are installation dependent.
*/
#include "rcv.h"
#include <stdlib.h>
#include <fcntl.h>
#include <pwd.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, int buflen)
{
char *mbox;
struct stat sb;
/* Ignore $MAIL if it is not owned by the invoking user */
if ((mbox = getenv("MAIL")) && stat(mbox, &sb) == 0 &&
sb.st_uid != getuid() && sb.st_uid != geteuid())
mbox = NULL;
if (mbox)
(void)strlcpy(buf, mbox, buflen);
else
(void)snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user);
}
/*
* Get rid of the queued mail.
*/
void
demail(void)
{
int fd;
if (value("keep") != NULL || rm(mailname) < 0) {
fd = open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600);
if (fd != -1)
close(fd);
}
}
/*
* Discover user login name.
*/
const char *
username(void)
{
const char *np;
uid_t uid;
if ((np = getenv("USER")) != NULL)
return(np);
if ((np = getenv("LOGNAME")) != NULL)
return(np);
if ((np = user_from_uid(uid = getuid(), 1)) != NULL)
return(np);
if ((np = getlogin()) != NULL)
return(np);
printf("Cannot associate a name with uid %u\n", uid);
return(NULL);
}
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