network preflet: Introduce early OpenVPN add-on

* Not included in image... will likely be quite some
  time until it is :-)

src/add-ons/network_settings/Jamfile

@@ -9,3 +9,7 @@ SubInclude HAIKU_TOP src add-ons network_settings dnsclient ;
 SubInclude HAIKU_TOP src add-ons network_settings ftpd ;
 SubInclude HAIKU_TOP src add-ons network_settings sshd ;
 SubInclude HAIKU_TOP src add-ons network_settings telnetd ;
+
+# VPN add-ons
+SubInclude HAIKU_TOP src add-ons network_settings openvpn ;
+

src/add-ons/network_settings/openvpn/Jamfile

@@ -0,0 +1,18 @@
+SubDir HAIKU_TOP src add-ons network_settings openvpn ;
+
+UsePublicHeaders [ FDirName add-ons network_settings ] ;
+UsePrivateHeaders app libroot kernel net shared ;
+UseHeaders [ FDirName $(HAIKU_TOP) src preferences network ] : false ;
+
+AddResources OpenVPN : OpenVPN.rdef ;
+
+Addon OpenVPNInterface :
+	OpenVPNInterfaceAddOn.cpp
+
+	: be bnetapi shared <nogrist>Network [ TargetLibsupc++ ]
+		[ TargetLibstdc++ ] localestub
+;
+
+DoCatalogs OpenVPNInterface : x-vnd.Haiku-OpenVPNInterface :
+	OpenVPNInterfaceAddOn.cpp
+;

src/add-ons/network_settings/openvpn/OpenVPN.rdef

@@ -0,0 +1,12 @@
+resource app_signature "application/x-vnd.Haiku-SSHService";
+
+resource app_version {
+	major  = 1,
+	middle = 0,
+	minor  = 0,
+	variety = 0,
+	internal = 0,
+	short_info = "1.0.0",
+	long_info = "Haiku SSH server settings"
+};
+

src/add-ons/network_settings/openvpn/OpenVPNInterfaceAddOn.cpp

@@ -0,0 +1,189 @@
+/*
+ * Copyright 2015-2017 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Axel Dörfler, <axeld@pinc-software.de>
+ *		Ingo Weinhold <ingo_weinhold@gmx.de>
+ *		Alexander von Gluck IV <kallisti5@unixzen.com>
+ */
+
+
+#include <pwd.h>
+
+#include <Button.h>
+#include <Catalog.h>
+#include <LayoutBuilder.h>
+#include <NetworkSettings.h>
+#include <NetworkSettingsAddOn.h>
+#include <StringView.h>
+#include <TextView.h>
+
+#include <NetServer.h>
+#include <RegistrarDefs.h>
+#include <user_group.h>
+#include <util/KMessage.h>
+
+#include "InterfaceListItem.h"
+#include "InterfaceView.h"
+
+
+using namespace BNetworkKit;
+
+
+#undef B_TRANSLATION_CONTEXT
+#define B_TRANSLATION_CONTEXT "OpenVPNInterfaceAddOn"
+
+
+static const uint32 kMsgToggleService = 'tgls';
+
+
+class OpenVPNInterfaceAddOn : public BNetworkSettingsAddOn {
+public:
+								OpenVPNInterfaceAddOn(image_id image,
+									BNetworkSettings& settings);
+	virtual						~OpenVPNInterfaceAddOn();
+
+	virtual	BNetworkSettingsItem*
+								CreateNextItem(uint32& cookie);
+};
+
+
+class OpenVPNInterfaceView : public InterfaceView {
+public:
+								OpenVPNInterfaceView(BNetworkSettings& settings);
+	virtual						~OpenVPNInterfaceView();
+};
+
+
+class OpenVPNInterfaceItem : public BNetworkSettingsItem {
+public:
+								OpenVPNInterfaceItem(BNetworkSettings& settings);
+	virtual						~OpenVPNInterfaceItem();
+
+	virtual	BNetworkSettingsType
+								Type() const;
+
+	virtual BListItem*			ListItem();
+	virtual BView*				View();
+
+	virtual status_t			Revert();
+	virtual bool				IsRevertable();
+
+private:
+			BNetworkSettings&	fSettings;
+			BListItem*			fItem;
+			InterfaceView*		fView;
+};
+
+
+// #pragma mark -
+
+
+OpenVPNInterfaceView::OpenVPNInterfaceView(BNetworkSettings& settings)
+	:
+	InterfaceView()
+{
+}
+
+
+OpenVPNInterfaceView::~OpenVPNInterfaceView()
+{
+}
+
+
+// #pragma mark -
+
+
+OpenVPNInterfaceItem::OpenVPNInterfaceItem(BNetworkSettings& settings)
+	:
+	fSettings(settings),
+	fItem(new InterfaceListItem("My Awesome VPN",
+		B_NETWORK_INTERFACE_TYPE_VPN)),
+	fView(NULL)
+{
+}
+
+
+OpenVPNInterfaceItem::~OpenVPNInterfaceItem()
+{
+	if (fView->Parent() == NULL)
+		delete fView;
+
+	delete fItem;
+}
+
+
+BNetworkSettingsType
+OpenVPNInterfaceItem::Type() const
+{
+	return B_NETWORK_SETTINGS_TYPE_VPN;
+}
+
+
+BListItem*
+OpenVPNInterfaceItem::ListItem()
+{
+	return fItem;
+}
+
+
+BView*
+OpenVPNInterfaceItem::View()
+{
+	if (fView == NULL)
+		fView = new OpenVPNInterfaceView(fSettings);
+
+	return fView;
+}
+
+
+status_t
+OpenVPNInterfaceItem::Revert()
+{
+	return B_OK;
+}
+
+bool
+OpenVPNInterfaceItem::IsRevertable()
+{
+	// TODO
+	return false;
+}
+
+
+// #pragma mark -
+
+
+OpenVPNInterfaceAddOn::OpenVPNInterfaceAddOn(image_id image,
+	BNetworkSettings& settings)
+	:
+	BNetworkSettingsAddOn(image, settings)
+{
+}
+
+
+OpenVPNInterfaceAddOn::~OpenVPNInterfaceAddOn()
+{
+}
+
+
+BNetworkSettingsItem*
+OpenVPNInterfaceAddOn::CreateNextItem(uint32& cookie)
+{
+	if (cookie++ == 0)
+		return new OpenVPNInterfaceItem(Settings());
+
+	return NULL;
+}
+
+
+// #pragma mark -
+
+
+extern "C"
+BNetworkSettingsAddOn*
+instantiate_network_settings_add_on(image_id image, BNetworkSettings& settings)
+{
+	return new OpenVPNInterfaceAddOn(image, settings);
+}