/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-sendmail-transport.c: Sendmail-based transport class. */
/*
*
* Authors: Dan Winship <danw@helixcode.com>
*
* Copyright 2000 Helix Code, Inc. (http://www.helixcode.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include "camel-sendmail-transport.h"
#include "camel-mime-message.h"
#include "camel-data-wrapper.h"
#include "camel-stream-fs.h"
#include "camel-exception.h"
static char *get_name (CamelService *service, gboolean brief);
static gboolean sendmail_can_send (CamelTransport *transport, CamelMedium *message);
static gboolean sendmail_send (CamelTransport *transport, CamelMedium *message,
CamelException *ex);
static gboolean sendmail_send_to (CamelTransport *transport, CamelMedium *message,
GList *recipients, CamelException *ex);
static void
camel_sendmail_transport_class_init (CamelSendmailTransportClass *camel_sendmail_transport_class)
{
CamelTransportClass *camel_transport_class =
CAMEL_TRANSPORT_CLASS (camel_sendmail_transport_class);
CamelServiceClass *camel_service_class =
CAMEL_SERVICE_CLASS (camel_sendmail_transport_class);
/* virtual method overload */
camel_service_class->get_name = get_name;
camel_transport_class->can_send = sendmail_can_send;
camel_transport_class->send = sendmail_send;
camel_transport_class->send_to = sendmail_send_to;
}
CamelType
camel_sendmail_transport_get_type (void)
{
static CamelType camel_sendmail_transport_type = CAMEL_INVALID_TYPE;
if (camel_sendmail_transport_type == CAMEL_INVALID_TYPE) {
camel_sendmail_transport_type =
camel_type_register (CAMEL_TRANSPORT_TYPE, "CamelSendmailTransport",
sizeof (CamelSendmailTransport),
sizeof (CamelSendmailTransportClass),
(CamelObjectClassInitFunc) camel_sendmail_transport_class_init,
NULL,
(CamelObjectInitFunc) NULL,
NULL);
}
return camel_sendmail_transport_type;
}
static gboolean
sendmail_can_send (CamelTransport *transport, CamelMedium *message)
{
return CAMEL_IS_MIME_MESSAGE (message);
}
static gboolean
sendmail_send_internal (CamelMedium *message, const char **argv, CamelException *ex)
{
int fd[2], nullfd, wstat;
sigset_t mask, omask;
CamelStream *out;
pid_t pid;
g_assert (CAMEL_IS_MIME_MESSAGE (message));
if (pipe (fd) == -1) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not create pipe to sendmail: "
"%s: mail not sent"),
g_strerror (errno));
return FALSE;
}
/* Block SIGCHLD so the calling application doesn't notice
* sendmail exiting before we do.
*/
sigemptyset (&mask);
sigaddset (&mask, SIGCHLD);
sigprocmask (SIG_BLOCK, &mask, &omask);
pid = fork ();
switch (pid) {
case -1:
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not fork sendmail: "
"%s: mail not sent"),
g_strerror (errno));
sigprocmask (SIG_SETMASK, &omask, NULL);
return FALSE;
case 0:
/* Child process */
nullfd = open ("/dev/null", O_RDWR);
dup2 (fd[0], STDIN_FILENO);
dup2 (nullfd, STDOUT_FILENO);
dup2 (nullfd, STDERR_FILENO);
close (nullfd);
close (fd[1]);
execv (SENDMAIL_PATH, (char **)argv);
_exit (255);
}
/* Parent process. Write the message out. */
close (fd[0]);
out = camel_stream_fs_new_with_fd (fd[1]);
if (camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), out) == -1
|| camel_stream_close(out) == -1) {
camel_object_unref (CAMEL_OBJECT (out));
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not send message: %s"),
strerror(errno));
return FALSE;
}
camel_object_unref (CAMEL_OBJECT (out));
/* Wait for sendmail to exit. */
while (waitpid (pid, &wstat, 0) == -1 && errno == EINTR)
;
sigprocmask (SIG_SETMASK, &omask, NULL);
if (!WIFEXITED (wstat)) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("sendmail exited with signal %s: "
"mail not sent."),
g_strsignal (WTERMSIG (wstat)));
return FALSE;
} else if (WEXITSTATUS (wstat) != 0) {
if (WEXITSTATUS (wstat) == 255) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not execute %s: "
"mail not sent."),
SENDMAIL_PATH);
} else {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("sendmail exited with status "
"%d: mail not sent."),
WEXITSTATUS (wstat));
}
return FALSE;
}
return TRUE;
}
static const char *
get_from (CamelMedium *message, CamelException *ex)
{
const CamelInternetAddress *from;
const char *name, *address;
from = camel_mime_message_get_from (CAMEL_MIME_MESSAGE (message));
if (!from || !camel_internet_address_get (from, 0, &name, &address)) {
camel_exception_set (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
_("Could not find 'From' address in message"));
return NULL;
}
return address;
}
static gboolean
sendmail_send_to (CamelTransport *transport, CamelMedium *message,
GList *recipients, CamelException *ex)
{
GList *r;
const char *from, **argv;
int i, len;
gboolean status;
from = get_from (message, ex);
if (!from)
return FALSE;
len = g_list_length (recipients);
argv = g_malloc ((len + 6) * sizeof (char *));
argv[0] = "sendmail";
argv[1] = "-i";
argv[2] = "-f";
argv[3] = from;
argv[4] = "--";
for (i = 1, r = recipients; i <= len; i++, r = r->next)
argv[i + 4] = r->data;
argv[i + 4] = NULL;
status = sendmail_send_internal (message, argv, ex);
g_free (argv);
return status;
}
static gboolean
sendmail_send (CamelTransport *transport, CamelMedium *message,
CamelException *ex)
{
const char *argv[6] = { "sendmail", "-t", "-i", "-f", NULL, NULL };
argv[4] = get_from (message, ex);
if (!argv[4])
return FALSE;
return sendmail_send_internal (message, argv, ex);
}
static char *
get_name (CamelService *service, gboolean brief)
{
if (brief)
return g_strdup (_("sendmail"));
else
return g_strdup (_("Mail delivery via the sendmail program"));
}
