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/* $OpenBSD: mda_mbox.c,v 1.3 2021/06/14 17:58:15 eric Exp $ */
/*
* Copyright (c) 2018 Gilles Chehade <gilles@poolp.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <unistd.h>
#include "smtpd.h"
void
mda_mbox(struct deliver *deliver)
{
int ret;
char sender[LINE_MAX];
char *envp[] = {
"HOME=/",
"PATH=" _PATH_DEFPATH,
"LOGNAME=root",
"USER=root",
NULL,
};
if (deliver->sender.user[0] == '\0' &&
deliver->sender.domain[0] == '\0')
ret = snprintf(sender, sizeof sender, "MAILER-DAEMON");
else
ret = snprintf(sender, sizeof sender, "%s@%s",
deliver->sender.user, deliver->sender.domain);
if (ret < 0 || (size_t)ret >= sizeof sender)
errx(EX_TEMPFAIL, "sender address too long");
execle(PATH_MAILLOCAL, PATH_MAILLOCAL, "-f",
sender, deliver->userinfo.username, (char *)NULL, envp);
perror("execl");
_exit(EX_TEMPFAIL);
}
void
mda_mbox_init(struct deliver *deliver)
{
int fd;
int ret;
char buffer[LINE_MAX];
ret = snprintf(buffer, sizeof buffer, "%s/%s",
_PATH_MAILDIR, deliver->userinfo.username);
if (ret < 0 || (size_t)ret >= sizeof buffer)
errx(EX_TEMPFAIL, "mailbox pathname too long");
if ((fd = open(buffer, O_CREAT|O_EXCL, 0)) == -1) {
if (errno == EEXIST)
return;
err(EX_TEMPFAIL, "open");
}
if (fchown(fd, deliver->userinfo.uid, deliver->userinfo.gid) == -1)
err(EX_TEMPFAIL, "fchown");
if (fchmod(fd, S_IRUSR|S_IWUSR) == -1)
err(EX_TEMPFAIL, "fchown");
}
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