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From 64dd780905ae339a0a57e4aba541799016816a1a Mon Sep 17 00:00:00 2001
From: Darik Horn <dajhorn@vanadac.com>
Date: Fri, 3 Oct 2014 13:30:24 -0400
Subject: [PATCH] Create a non-forking softetherd for upstart and systemd.
Implement a daemon that expects to be invoked by a new-style init like upstart
or systemd as:
/usr/sbin/softetherd [vpnbridge|vpnclient|vpnserver]
Alternatively, if the command line argument is empty, then use the
`SOFTETHER_MODE` environment variable instead.
Conflicts:
src/bin/hamcore/strtable_en.stb
Taken from Github at
https://github.com/dajhorn/SoftEtherVPN/commit/64dd780905ae339a0a57e4aba541799016816a1a.
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
configure.ac | 1 +
src/Makefile.am | 3 ++
src/bin/hamcore/strtable_en.stb | 1 +
src/softetherd/Makefile.am | 28 ++++++++++
src/softetherd/softetherd.c | 114 ++++++++++++++++++++++++++++++++++++++++
5 files changed, 147 insertions(+)
create mode 100644 src/softetherd/Makefile.am
create mode 100644 src/softetherd/softetherd.c
Index: b/configure.ac
===================================================================
--- a/configure.ac
+++ b/configure.ac
@@ -36,6 +36,7 @@
src/vpnclient/Makefile
src/vpnbridge/Makefile
src/vpncmd/Makefile
+ src/softetherd/Makefile
])
Index: b/src/Makefile.am
===================================================================
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -27,3 +27,6 @@
# These are the final build products.
SUBDIRS += vpnserver vpnclient vpnbridge vpncmd
+
+# This is a daemon for upstart and systemd.
+SUBDIRS += softetherd
Index: b/src/bin/hamcore/strtable_en.stb
===================================================================
--- a/src/bin/hamcore/strtable_en.stb
+++ b/src/bin/hamcore/strtable_en.stb
@@ -1062,6 +1062,7 @@
# Concerning services (UNIX)
+UNIX_DAEMON_HELP SoftEther VPN non-forking daemon for upstart and systemd.\nCommand Usage:\n %S vpnbridge - Enable bridging features.\n %S vpnclient - Enable client features.\n %S vpnserver - Enable all features.\nThe parameter can be set in the SOFTETHER_MODE environment variable.\n\n
UNIX_SVC_HELP %S service program\nCopyright (c) SoftEther VPN Project. All Rights Reserved.\n\n%S command usage:\n %S start - Start the %S service.\n %S stop - Stop the %S service if the service has been already started.\n\n
UNIX_SVC_STARTED The %S service has been started.\n
UNIX_SVC_STOPPING Stopping the %S service ...\n
Index: b/src/softetherd/Makefile.am
===================================================================
--- /dev/null
+++ b/src/softetherd/Makefile.am
@@ -0,0 +1,28 @@
+# Copyright 2014 Darik Horn <dajhorn@vanadac.com>
+#
+# This file is part of SoftEther.
+#
+# SoftEther 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.
+#
+# SoftEther 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
+# SoftEther. If not, see <http://www.gnu.org/licenses/>.
+
+
+include $(top_srcdir)/autotools/softether.am
+
+sbin_PROGRAMS = \
+ softetherd
+
+softetherd_SOURCES = \
+ softetherd.c
+
+softetherd_LDADD = \
+ $(top_builddir)/src/libsoftether/libsoftether.la
Index: b/src/softetherd/softetherd.c
===================================================================
--- /dev/null
+++ b/src/softetherd/softetherd.c
@@ -0,0 +1,114 @@
+// SoftEther VPN daemon for upstart and systemd.
+//
+// Copyright 2014 Darik Horn <dajhorn@vanadac.com>
+//
+// This file is part of SoftEther.
+//
+// SoftEther 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.
+//
+// SoftEther 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
+// SoftEther. If not, see <http://www.gnu.org/licenses/>.
+
+
+#include <GlobalConst.h>
+
+#define VPN_EXE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <stdarg.h>
+#include <time.h>
+#include <Mayaqua/Mayaqua.h>
+#include <Cedar/Cedar.h>
+
+void DaemonUsage(char *name)
+{
+ UniPrint(_UU("UNIX_DAEMON_HELP"), name, name, name);
+}
+
+
+void DaemonStartProcess()
+{
+ // This environment variable is exported by upstart.
+ char *upstart_job = getenv("UPSTART_JOB");
+
+ InitCedar();
+ StInit();
+ StStartServer(false);
+
+ // Notify upstart that softetherd is ready.
+ if (upstart_job != NULL)
+ {
+ unsetenv("UPSTART_JOB");
+ raise(SIGSTOP);
+ }
+}
+
+
+void DaemonStopProcess()
+{
+ StStopServer();
+ StFree();
+ FreeCedar();
+}
+
+
+int main(int argc, char *argv[])
+{
+ // This environment variable is sourced and exported by the init process from /etc/default/softether.
+ char *softether_mode = getenv("SOFTETHER_MODE");
+
+ InitMayaqua(false, false, argc, argv);
+
+ // Check for an explicit invocation. (eg: "/usr/sbin/softetherd vpnserver")
+ if (argc >= 2)
+ {
+ if (StrCmpi(argv[1], "vpnbridge") == 0
+ || StrCmpi(argv[1], "vpnclient") == 0
+ || StrCmpi(argv[1], "vpnserver") == 0)
+ {
+ UnixExecService(argv[1], DaemonStartProcess, DaemonStopProcess);
+ FreeMayaqua();
+ return 0;
+ }
+
+ // Exit status codes 150..199 are reserved for the application by the LSB.
+ fprintf(stderr, "Error: Unrecognized parameter: %s\n", argv[1]);
+ fflush(stderr);
+ FreeMayaqua();
+ return 150;
+ }
+
+ // Alternatively, use the environment variable.
+ if (softether_mode != NULL)
+ {
+ if (StrCmpi(softether_mode, "vpnbridge") == 0
+ || StrCmpi(softether_mode, "vpnclient") == 0
+ || StrCmpi(softether_mode, "vpnserver") == 0)
+ {
+ UnixExecService(softether_mode, DaemonStartProcess, DaemonStopProcess);
+ FreeMayaqua();
+ return 0;
+ }
+
+ // Exit status codes 150..199 are reserved for the application by the LSB.
+ fprintf(stderr, "Error: Unrecognized environment variable: SOFTETHER_MODE=%s\n", softether_mode);
+ fflush(stderr);
+ FreeMayaqua();
+ return 151;
+ }
+
+ DaemonUsage(argv[0]);
+ FreeMayaqua();
+ return 3;
+}
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