# $Id: Makefile.kmk 87826 2021-02-21 23:08:44Z vboxsync $
## @file
# Sub-makefile for NAT Networking
#

#
# Copyright (C) 2006-2020 Oracle Corporation
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file is free software;
# you can redistribute it and/or modify it under the terms of the GNU
# General Public License (GPL) as published by the Free Software
# Foundation, in version 2 as it comes in the "COPYING" file of the
# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
#

SUB_DEPTH = ../../../..
include $(KBUILD_PATH)/subheader.kmk
ifdef VBOX_WITH_LWIP_NAT # entire file

 ifndef LWIP_SOURCES
  include $(PATH_SUB_CURRENT)/../../Devices/Network/lwip-new/Config.kmk
 endif

#
# Globals
#
VBOX_PATH_NAT_SRC := $(PATH_SUB_CURRENT)


#
# Hardened stub exe for VBoxNetNAT.
#
 ifdef VBOX_WITH_HARDENING
PROGRAMS += VBoxNetNATHardened
VBoxNetNATHardened_TEMPLATE = VBOXR3HARDENEDEXE
VBoxNetNATHardened_NAME     = VBoxNetNAT
  ifdef VBOX_WITH_AUTOMATIC_DEFS_QUOTING
VBoxNetNATHardened_DEFS     = SERVICE_NAME="VBoxNetNAT"
  else
VBoxNetNATHardened_DEFS     = SERVICE_NAME=\"VBoxNetNAT\"
  endif
VBoxNetNATHardened_SOURCES  = VBoxNetNATHardened.cpp
VBoxNetNATHardened_LDFLAGS.win = /SUBSYSTEM:windows
$(call VBOX_SET_VER_INFO_EXE,VBoxNetNATHardened,VirtualBox NAT Engine,$(VBOX_WINDOWS_ICON_FILE)) # Version info / description.
 endif


#
# VBoxNetNAT.
#
 ifdef VBOX_WITH_HARDENING
DLLS     += VBoxNetNAT
 else
PROGRAMS += VBoxNetNAT
 endif
VBoxNetNAT_TEMPLATE := $(if-expr defined(VBOX_WITH_HARDENING),VBOXMAINDLL,VBOXMAINCLIENTEXE)
VBoxNetNAT_NAME     := VBoxNetNAT
VBoxNetNAT_DEFS      = IPv6
# VBoxNetNAT_DEFS.linux = WITH_VALGRIND # instrument lwip memp.c
VBoxNetNAT_DEFS.win  = VBOX_COM_OUTOFPROC_MODULE _WIN32_WINNT=0x501 # Windows XP
# Convince Solaris headers to expose socket stuff we need.
#
# Setting _XOPEN_SOURCE to either 500 or 600 would always work, but
# <sys/feature_tests.h> insists that 600 requires C99 and so it
# explodes for older g++.  It also insists that 500 is NOT to be used
# with C99.
#
# Newer g++ in C++11 mode (formerly known as C++0x) needs 600, so it
# employs sleight of hand to pretend it's C99 to keep feature test
# happy.
#
# Compile the C code with settings that match g++.  This probably
# should be centralized so that whole codebase uses consistent
# settings.
 ifeq ($(KBUILD_TARGET),solaris)
  ifneq ($(VBOX_GCC_VERSION_CXX),)
   if $(VBOX_GCC_VERSION_CXX) >= 40600
# we compile C++ code with -std=c++0x / -std=c++11
VBoxNetNAT_CFLAGS.solaris += -std=c99
VBoxNetNAT_DEFS.solaris += _XOPEN_SOURCE=600
   else
VBoxNetNAT_DEFS.solaris += _XOPEN_SOURCE=500
   endif
  endif
VBoxNetNAT_DEFS.solaris += __EXTENSIONS__=1
 endif

# (current dir is for for lwipopts.h)
VBoxNetNAT_INCS += . $(addprefix ../../Devices/Network/lwip-new/,$(LWIP_INCS))

VBoxNetNAT_SOURCES = \
	VBoxNetLwipNAT.cpp \
	../NetLib/IntNetIf.cpp \
	../NetLib/VBoxNetPortForwardString.cpp \
	$(addprefix ../../Devices/Network/lwip-new/,$(LWIP_SOURCES)) \
	proxy_pollmgr.c \
	proxy_rtadvd.c \
	proxy.c \
	pxremap.c \
	pxtcp.c \
	pxudp.c \
	pxdns.c \
	fwtcp.c \
	fwudp.c \
	portfwd.c \
	proxy_dhcp6ds.c \
	proxy_tftpd.c

 ifeq ($(KBUILD_TARGET),win)
VBoxNetNAT_SOURCES += pxping_win.c # unprivileged Icmp API
 else
VBoxNetNAT_SOURCES        += pxping.c     # raw sockets
VBoxNetNAT_CFLAGS.linux   += -Wno-address-of-packed-member # Needed for GCC 9.
 endif

VBoxNetNAT_SOURCES.darwin  += rtmon_bsd.c
VBoxNetNAT_SOURCES.freebsd += rtmon_bsd.c
VBoxNetNAT_SOURCES.linux   += rtmon_linux.c
VBoxNetNAT_SOURCES.solaris += rtmon_bsd.c
VBoxNetNAT_SOURCES.win     += \
	rtmon_win.c \
	RTWinPoll.cpp \
	RTWinSocketPair.cpp

VBoxNetNAT_LIBS = \
 	$(LIB_RUNTIME)
VBoxNetNAT_LIBS.solaris += socket nsl

VBoxNetNAT_LDFLAGS.win = /SUBSYSTEM:windows

# ifeq ($(VBOX_WITH_HARDENING),)
#  ifn1of ($(KBUILD_TARGET), darwin win)
#   # helper for debugging unprivileged
#   VBoxNetNAT_DEFS += VBOX_RAWSOCK_DEBUG_HELPER
#   VBoxNetNAT_SOURCES += getrawsock.c
#  endif
# endif


 ifdef VBOX_WITH_HARDENING
$(call VBOX_SET_VER_INFO_DLL,VBoxNetNAT,VirtualBox NAT Engine (dll),$(VBOX_WINDOWS_ICON_FILE)) # Version info / description.
 else
$(call VBOX_SET_VER_INFO_EXE,VBoxNetNAT,VirtualBox NAT Engine,$(VBOX_WINDOWS_ICON_FILE)) # Version info / description.
 endif

endif # VBOX_WITH_LWIP_NAT
include $(FILE_KBUILD_SUB_FOOTER)