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/* $OpenBSD: delivery_maildir.c,v 1.12 2013/05/24 17:03:14 eric Exp $ */
/*
* Copyright (c) 2011 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/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <imsg.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "smtpd.h"
#include "log.h"
extern char **environ;
/* maildir backend */
static void delivery_maildir_open(struct deliver *);
struct delivery_backend delivery_backend_maildir = {
1, delivery_maildir_open
};
static void
delivery_maildir_open(struct deliver *deliver)
{
char tmp[SMTPD_MAXPATHLEN], new[SMTPD_MAXPATHLEN];
int ch, fd;
FILE *fp;
char *msg;
int n;
#define error(m) { msg = m; goto err; }
#define error2(m) { msg = m; goto err2; }
setproctitle("maildir delivery");
if (mkdirs(deliver->to, 0700) < 0 && errno != EEXIST)
error("cannot mkdir maildir");
if (chdir(deliver->to) < 0)
error("cannot cd to maildir");
if (mkdir("cur", 0700) < 0 && errno != EEXIST)
error("mkdir cur failed");
if (mkdir("tmp", 0700) < 0 && errno != EEXIST)
error("mkdir tmp failed");
if (mkdir("new", 0700) < 0 && errno != EEXIST)
error("mkdir new failed");
snprintf(tmp, sizeof tmp, "tmp/%lld.%d.%s",
(long long int) time(NULL),
getpid(), env->sc_hostname);
fd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0600);
if (fd < 0)
error("cannot open tmp file");
fp = fdopen(fd, "w");
if (fp == NULL)
error2("fdopen");
while ((ch = getc(stdin)) != EOF)
if (putc(ch, fp) == EOF)
break;
if (ferror(stdin))
error2("read error");
if (fflush(fp) == EOF || ferror(fp))
error2("write error");
if (fsync(fd) < 0)
error2("fsync");
if (fclose(fp) == EOF)
error2("fclose");
snprintf(new, sizeof new, "new/%s", tmp + 4);
if (rename(tmp, new) < 0)
error2("cannot rename tmp->new");
_exit(0);
err2:
n = errno;
unlink(tmp);
errno = n;
err:
perror(msg);
_exit(1);
}
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