# $Id: Makefile.kmk $
## @file
# Sub-makefile for NAT Networking
#

#
# Copyright (C) 2006-2023 Oracle and/or its affiliates.
#
# This file is part of VirtualBox base platform packages, as
# available from https://www.virtualbox.org.
#
# 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, in version 3 of the
# License.
#
# 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, see <https://www.gnu.org/licenses>.
#
# SPDX-License-Identifier: GPL-3.0-only
#

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 \
 	$(if $(VBOX_WITH_INTNET_SERVICE_IN_R3),VBOX_WITH_INTNET_SERVICE_IN_R3,)
 # VBoxNetNAT_DEFS.linux = WITH_VALGRIND # instrument lwip memp.c
 VBoxNetNAT_DEFS.win = VBOX_COM_OUTOFPROC_MODULE _WIN32_WINNT=0x501 # Windows XP
 # Convince Solaris headers to expose socket stuff we need.
 #
 # Setting _XOPEN_SOURCE to either 500 or 600 would always work, but
 # <sys/feature_tests.h> insists that 600 requires C99 and so it
 # explodes for older g++.  It also insists that 500 is NOT to be used
 # with C99.
 #
 # Newer g++ in C++11 mode (formerly known as C++0x) needs 600, so it
 # employs sleight of hand to pretend it's C99 to keep feature test
 # happy.
 #
 # Compile the C code with settings that match g++.  This probably
 # should be centralized so that whole codebase uses consistent
 # settings.
 ifeq ($(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)