# Copyright 2022-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

inherit edo linux-mod-r1 readme.gentoo-r1 systemd toolchain-funcs udev

MY_PN="VirtualBox"
MY_P="${MY_PN}-${PV}"

DESCRIPTION="VirtualBox kernel modules and user-space tools for Gentoo guests"
HOMEPAGE="https://www.virtualbox.org/"
SRC_URI="https://download.virtualbox.org/virtualbox/${PV}/${MY_P}.tar.bz2
	https://gitweb.gentoo.org/proj/virtualbox-patches.git/snapshot/virtualbox-patches-6.1.36.tar.bz2"
S="${WORKDIR}/${MY_PN}-${PV}"

LICENSE="GPL-2"
SLOT="0/$(ver_cut 1-2)"
KEYWORDS="~amd64 ~x86"
IUSE="X +dbus"

# automount Error: VBoxServiceAutoMountWorker: Group "vboxsf" does not exist
RDEPEND="
	acct-group/vboxguest
	acct-group/vboxsf
	acct-user/vboxguest
	sys-libs/pam
	sys-libs/zlib
	dbus? ( sys-apps/dbus )
	X? (
		x11-apps/xrandr
		x11-apps/xrefresh
		x11-libs/libX11
		x11-libs/libXext
		x11-libs/libXmu
		x11-libs/libXt
	)
"
DEPEND="
	${RDEPEND}
	X? (
		x11-base/xorg-proto
		x11-libs/libICE
		x11-libs/libSM
		x11-libs/libXau
		x11-libs/libXdmcp
	)
"
BDEPEND="
	>=dev-build/kbuild-0.1.9998.3127
	<=dev-build/kbuild-0.1.9998.3500
	>=dev-lang/yasm-0.6.2
	sys-devel/bin86
	sys-power/iasl
"

PATCHES=(
	"${FILESDIR}"/virtualbox-guest-additions-7.0.8-fix-gcc13.patch
)

DOCS=()	# Don't install the default README file during einstalldocs

VBOX_MOD_SRC_DIR="out/linux.${ARCH}/release/bin/additions/src"
CONFIG_CHECK="~DRM_TTM ~DRM_VMWGFX"
WARNING_DRM_TTM="DRM_TTM is needed for running the vboxvideo driver."
WARNING_DRM_VMWGFX="DRM_VMWGFX is the recommended driver for VMSVGA."

DOC_CONTENTS="\n
Please add users to the \"vboxguest\" group so they can\n
benefit from seamless mode, auto-resize and clipboard.\n
\n
The vboxsf group has been added to make automount services work.\n
These services are part of the shared folders support.\n
\n
Please add:\n
	/etc/init.d/virtualbox-guest-additions\n
to the default runlevel in order to start\n
needed services.\n
\n
An autostart .desktop file has been installed to start\n
VBoxClient in desktop sessions.\n
\n
You can mount shared folders with:\n
	mount -t vboxsf <shared_folder_name> <mount_point>\n
\n
Warning:\n
	this ebuild is only needed if you are running gentoo\n
	inside a VirtualBox Virtual Machine, you don't need\n
	it to run VirtualBox itself.\n
\n"

src_prepare() {
	eapply "${PATCHES[@]}"

	# Remove shipped binaries (kBuild,yasm), see bug #232775
	rm -r kBuild/bin tools || die

	# Provide kernel sources
	pushd src/VBox/Additions &>/dev/null || die
	ebegin "Extracting guest kernel module sources"
	kmk GuestDrivers-src vboxguest-src vboxsf-src vboxvideo-src &>/dev/null
	eend $? || die
	popd &>/dev/null || die

	# PaX fixes (see bug #298988)
	eapply -d "${VBOX_MOD_SRC_DIR}" -- "${FILESDIR}"/vboxguest-6.1.36-log-use-c99.patch

	# Disable things unused or splitted into separate ebuilds
	cp "${FILESDIR}/${PN}-5-localconfig" LocalConfig.kmk || die
	if ! use X; then
		echo "VBOX_WITH_X11_ADDITIONS :=" >> LocalConfig.kmk || die
	fi

	# Remove pointless GCC version check
	sed -e '/^check_gcc$/d' -i configure || die

	# Respect LDFLAGS (bug #759100)
	sed -i -e '/TEMPLATE_VBOXR3EXE_LDFLAGS.linux[    ]*=/ s/$/ $(CCLDFLAGS)/' Config.kmk || die

	eapply "${WORKDIR}/virtualbox-patches-6.1.36/patches"
	eapply_user
}

src_configure() {
	tc-export AR CC CXX LD RANLIB

	# Build the user-space tools, warnings are harmless
	local myconf=(
		--with-gcc="$(tc-getCC)"
		--with-g++="$(tc-getCXX)"

		--nofatal
		--disable-xpcom
		--disable-sdl-ttf
		--disable-pulse
		--disable-alsa
		$(usev !dbus --disable-dbus)
		--target-arch=${ARCH}
		--with-linux="${KV_OUT_DIR}"
		--build-headless
	)

	# bug #843437
	# Respect LDFLAGS (bug #759100)
	# Cannot use LDFLAGS here because they also get passed to $(LD)
	cat >> LocalConfig.kmk <<-EOF || die
		CFLAGS=${CFLAGS}
		CXXFLAGS=${CXXFLAGS}
		CCLDFLAGS=${LDFLAGS}
	EOF

	edo ./configure "${myconf[@]}"
}

src_compile() {
	source ./env.sh || die

	# Force kBuild to respect C[XX]FLAGS and MAKEOPTS (bug #178529)
	MAKEJOBS=$(grep -Eo '(\-j|\-\-jobs)(=?|[[:space:]]*)[[:digit:]]+' <<< ${MAKEOPTS})
	MAKELOAD=$(grep -Eo '(\-l|\-\-load-average)(=?|[[:space:]]*)[[:digit:]]+' <<< ${MAKEOPTS})
	MAKEOPTS="${MAKEJOBS} ${MAKELOAD}"

	local myemakeargs=(
		VBOX_BUILD_PUBLISHER=_Gentoo
		VBOX_ONLY_ADDITIONS=1

		KBUILD_VERBOSE=2

		AS="$(tc-getCC)"
		CC="$(tc-getCC)"
		CXX="$(tc-getCXX)"
		LD="$(tc-getCC)"

		TOOL_GCC3_CC="$(tc-getCC)"
		TOOL_GCC3_CXX="$(tc-getCXX)"
		TOOL_GCC3_LD="$(tc-getCC)"
		TOOL_GCC3_AS="$(tc-getCC)"
		TOOL_GCC3_AR="$(tc-getAR)"
		TOOL_GCC3_OBJCOPY="$(tc-getOBJCOPY)"
		#TOOL_GCC3_LD_SYSMOD="$(tc-getCC)"

		TOOL_GXX3_CC="$(tc-getCC)"
		TOOL_GXX3_CXX="$(tc-getCXX)"
		TOOL_GXX3_LD="$(tc-getCXX)"
		TOOL_GXX3_AS="$(tc-getCXX)"
		TOOL_GXX3_AR="$(tc-getAR)"
		TOOL_GXX3_OBJCOPY="$(tc-getOBJCOPY)"
		#TOOL_GXX3_LD_SYSMOD="$(tc-getCXX)"

		TOOL_GCC3_CFLAGS="${CFLAGS}"
		TOOL_GCC3_CXXFLAGS="${CXXFLAGS}"
		VBOX_GCC_OPT="${CXXFLAGS}"
		VBOX_NM="$(tc-getNM)"
		TOOL_YASM_AS=yasm
	)

	MAKE="kmk" emake "${myemakeargs[@]}"

	# Now creating the kernel modules. We must do this _after_
	# we compiled the user-space tools as we need two of the
	# automatically generated header files. (>=3.2.0)
	# Move this here for bug 836037
	local modargs=( KERN_DIR="${KV_OUT_DIR}" KERN_VER="${KV_FULL}" )
	local modlist=( vboxguest vboxsf )
	use X && modlist+=( vboxvideo )
	modlist=( "${modlist[@]/%/=misc:${VBOX_MOD_SRC_DIR}}" )
	linux-mod-r1_src_compile
}

src_install() {
	linux-mod-r1_src_install

	insinto /etc/modprobe.d # 485996
	newins - vboxsf.conf <<-EOF
		# modprobe.d configuration file for VBOXSF

		# Internal Aliases - Do not edit
		# ------------------------------
		alias fs-vboxsf vboxsf
	EOF

	cd out/linux.${ARCH}/release/bin/additions || die

	insinto /sbin
	newins mount.vboxsf mount.vboxsf
	fperms 4755 /sbin/mount.vboxsf

	if use dbus; then
		newinitd "${FILESDIR}"/${PN}-8.initd-r1 ${PN}
	else
		newinitd <(sed 's/ dbus\>//' "${FILESDIR}"/${PN}-8.initd-r1) ${PN}
	fi

	insinto /usr/sbin/
	newins VBoxService vboxguest-service
	fperms 0755 /usr/sbin/vboxguest-service

	insinto /usr/bin
	doins VBoxControl
	fperms 0755 /usr/bin/VBoxControl

	# VBoxClient user service and xrandr wrapper
	if use X ; then
		doins VBoxClient
		fperms 0755 /usr/bin/VBoxClient
		doins VBoxDRMClient
		fperms 4755 /usr/bin/VBoxDRMClient

		pushd "${S}"/src/VBox/Additions/x11/Installer &>/dev/null || die
		newins 98vboxadd-xclient VBoxClient-all
		fperms 0755 /usr/bin/VBoxClient-all
		popd &>/dev/null || die
	fi

	# udev rule for vboxdrv
	local udev_rules_dir="/lib/udev/rules.d"
	dodir ${udev_rules_dir}
	echo 'KERNEL=="vboxguest", OWNER="vboxguest", GROUP="vboxguest", MODE="0660"' \
		>> "${ED}/${udev_rules_dir}/60-virtualbox-guest-additions.rules" \
		|| die
	echo 'KERNEL=="vboxuser", OWNER="vboxguest", GROUP="vboxguest", MODE="0660"' \
		>> "${ED}/${udev_rules_dir}/60-virtualbox-guest-additions.rules" \
		|| die

	# VBoxClient autostart file
	insinto /etc/xdg/autostart
	doins "${FILESDIR}"/vboxclient.desktop

	# sample xorg.conf
	dodoc "${FILESDIR}"/xorg.conf.vbox
	docompress -x "${ED}"/usr/share/doc/${PF}/xorg.conf.vbox

	systemd_dounit "${FILESDIR}/${PN}.service"

	readme.gentoo_create_doc
}

pkg_postinst() {
	linux-mod-r1_pkg_postinst
	udev_reload

	if ! use X ; then
		elog "The use flag \"X\" is off, enable it to install the"
		elog "X Window System drivers and integration."
	fi

	readme.gentoo_print_elog
}

pkg_postrm() {
	udev_reload
}