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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-sendmail-transport.c: Sendmail-based transport class. */
/*
*
* Author :
* 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
*/
#include <config.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.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 gboolean _can_send (CamelTransport *transport, CamelMedium *message);
static gboolean _send (CamelTransport *transport, CamelMedium *message,
CamelException *ex);
static gboolean _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);
/* virtual method overload */
camel_transport_class->can_send = _can_send;
camel_transport_class->send = _send;
camel_transport_class->send_to = _send_to;
}
GtkType
camel_sendmail_transport_get_type (void)
{
static GtkType camel_sendmail_transport_type = 0;
if (!camel_sendmail_transport_type) {
GtkTypeInfo camel_sendmail_transport_info =
{
"CamelSendmailTransport",
sizeof (CamelSendmailTransport),
sizeof (CamelSendmailTransportClass),
(GtkClassInitFunc) camel_sendmail_transport_class_init,
(GtkObjectInitFunc) NULL,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
camel_sendmail_transport_type = gtk_type_unique (CAMEL_TRANSPORT_TYPE, &camel_sendmail_transport_info);
}
return camel_sendmail_transport_type;
}
static gboolean
_can_send (CamelTransport *transport, CamelMedium *message)
{
return CAMEL_IS_MIME_MESSAGE (message);
}
static gboolean
_send_internal (CamelMedium *message, 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, argv);
_exit (255);
}
/* Parent process. Write the message out. */
close (fd[0]);
out = camel_stream_fs_new_with_fd (fd[1]);
camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), out);
camel_stream_flush (out);
gtk_object_unref (GTK_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_set (ex, CAMEL_EXCEPTION_SYSTEM,
"Could not execute "
SENDMAIL_PATH ": mail not sent.");
} else {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
"sendmail exited with status "
"%d: mail not sent.",
WEXITSTATUS (wstat));
}
return FALSE;
}
return TRUE;
}
static gboolean
_send_to (CamelTransport *transport, CamelMedium *message,
GList *recipients, CamelException *ex)
{
GList *r;
char **argv;
int i, len;
gboolean status;
len = g_list_length (recipients);
argv = g_malloc ((len + 4) * sizeof (char *));
argv[0] = "sendmail";
argv[1] = "-i";
argv[2] = "--";
for (i = 1, r = recipients; i <= len; i++, r = r->next)
argv[i + 2] = r->data;
argv[i + 2] = NULL;
status = _send_internal (message, argv, ex);
g_free (argv);
return status;
}
static gboolean
_send (CamelTransport *transport, CamelMedium *message,
CamelException *ex)
{
char *argv[4] = { "sendmail", "-t", "-i", NULL };
return _send_internal (message, argv, ex);
}
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