Add CamelTransport abstract class and CamelSendmailTransport

svn path=/trunk/; revision=1921

1 files changed, 203 insertions, 0 deletions

diff --git a/camel/providers/sendmail/camel-sendmail-transport.c b/camel/providers/sendmail/camel-sendmail-transport.c
new file mode 100644
index 0000000000..fed9ec459d
--- /dev/null
+++ b/camel/providers/sendmail/camel-sendmail-transport.c
@@ -0,0 +1,203 @@
+/* -*- 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_asssert (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);
+
+	switch (fork ()) {
+	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_close (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);
+}