###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2007-2021  IPFire Team  <info@ipfire.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, either version 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# 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 <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

###############################################################################
# Definitions
###############################################################################

include Config

VER = ipfire

THISAPP    = cdrom
TARGET     = $(DIR_INFO)/$(THISAPP)

# Fail when there is an error in the tar pipe
SHELL=/bin/bash -o pipefail

HAS_MEMTEST = 0
HAS_IPXE = 0
HAS_ISOLINUX = 0

ifeq "$(BUILD_PLATFORM)" "x86"
	HAS_MEMTEST = 1
	HAS_IPXE = 1
	HAS_ISOLINUX = 1
endif

ISO_ARGS = -J -r -v \
	-A "$(NAME) $(VERSION) $(BUILD_ARCH)" \
	-V "$(NAME) $(VERSION) $(BUILD_ARCH)"

ISOHYBRID_ARGS =

ifeq "$(HAS_ISOLINUX)" "1"
	ISO_ARGS += \
		-no-emul-boot \
		-boot-load-size 4 \
		-boot-info-table \
		-b boot/isolinux/isolinux.bin \
		-c boot/isolinux/boot.catalog
endif

ifeq "$(EFI)" "1"
	ISO_ARGS += \
		-eltorito-alt-boot \
		-e boot/isolinux/efiboot.img \
		-no-emul-boot

	ISOHYBRID_ARGS += --uefi
endif

GRUB_EFI_MODULES = \
	all_video \
	at_keyboard \
	boot \
	bitmap_scale \
	cat \
	chain \
	configfile \
	disk \
	echo \
	efi_gop \
	efi_uga \
	ext2 \
	extcmd \
	fat \
	file \
	font \
	fxterm_menu \
	gfxterm \
	gfxmenu \
	gfxterm_background \
	gzio \
	halt \
	help \
	iso9660 \
	jpeg \
	loadbios \
	loadenv \
	loopback \
	linux \
	ls \
	memdisk \
	minicmd \
	nativedisk \
	normal \
	ntfs \
	part_gpt \
	part_msdos \
	png \
	probe \
	reboot \
	regexp \
	search \
	search_fs_file \
	search_fs_uuid \
	search_label \
	tar \
	test \
	tga \
	true \
	usb_keyboard

ISO_FILE = /install/images/$(SNAME)-$(VERSION)-core$(CORE)-$(BUILD_ARCH).iso

###############################################################################
# Top-level Rules
###############################################################################

install : $(TARGET)

check :

download :

b2 :

###############################################################################
# Installation Details
###############################################################################

$(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
	# Update /etc/system-release, because the string might have changed
	# since stage2 has been executed..
	echo "$(SYSTEM_RELEASE)" > /etc/system-release

	# Create a directory to authorise the CDROM in
	rm -rf $(DIR_TMP)/cdrom && mkdir -p $(DIR_TMP)/cdrom

	# Clear mtab (prevents .journal problems)
	rm -vf /etc/mtab
	ln -s /proc/self/mounts /etc/mtab

	# Create filelist for packaging.
	BUILDTARGET="$(BUILDTARGET)" BUILD_ARCH="$(BUILD_ARCH)" KVER="$(KVER)" \
		$(DIR_SRC)/src/scripts/archive.files \
		$(DIR_SRC)/config/rootfiles/common \
		> $(DIR_TMP)/ROOTFILES

	# Compress root filesystem
	# Reason for this tar+untar+tar is removing of entries listed two or more in src/ROOTFILES
	rm -rf $(DIR_TMP)/root && mkdir -p $(DIR_TMP)/root
	tar $(TAR_OPTIONS) -c --exclude='#*' --exclude='proc/*' --exclude='dev/pts/*' --exclude='tmp/*' \
		--exclude='__pycache__' \
		-C / --files-from=$(DIR_TMP)/ROOTFILES | tar $(TAR_OPTIONS) -x -C $(DIR_TMP)/root
	rm -f $(DIR_TMP)/ROOTFILES
	mkdir $(DIR_TMP)/root/sys
	cd $(DIR_TMP)/root && tar $(TAR_OPTIONS) -cf - * | zstd $(ZSTD_OPTIONS) > $(DIR_TMP)/cdrom/distro.img
	rm -rf $(DIR_TMP)/root

	# Other files
	touch $(DIR_TMP)/cdrom/$(SNAME)-$(VERSION)-core$(CORE).media
	sed 's/VERSION/$(VERSION)/' $(DIR_SRC)/config/cdrom/README.txt > $(DIR_TMP)/cdrom/README.txt
	cp $(DIR_SRC)/doc/COPYING $(DIR_TMP)/cdrom/

	# Install documentation
	-mkdir -pv $(DIR_TMP)/cdrom/doc
	cp $(DIR_SRC)/doc/{ChangeLog,packages-list.txt}	$(DIR_TMP)/cdrom/doc

	mkdir -p $(DIR_TMP)/cdrom/boot/isolinux

	cp /boot/vmlinuz-$(KVER)-ipfire $(DIR_TMP)/cdrom/boot/isolinux/vmlinuz
	dracut --force -a "installer" --strip $(DIR_TMP)/cdrom/boot/isolinux/instroot $(KVER)-ipfire

ifeq "$(HAS_ISOLINUX)" "1"
	dd if=/dev/zero  bs=1k count=2            > $(DIR_TMP)/cdrom/boot/isolinux/boot.catalog
	cp $(DIR_SRC)/config/syslinux/boot.png      $(DIR_TMP)/cdrom/boot/isolinux/boot.png
	cp /usr/share/syslinux/isolinux.bin         $(DIR_TMP)/cdrom/boot/isolinux/isolinux.bin
	cp /usr/share/hwdata/pci.ids                $(DIR_TMP)/cdrom/boot/isolinux/pci.ids
	cp -vf /usr/share/syslinux/*.c32            $(DIR_TMP)/cdrom/boot/isolinux/
	sed -e "s/VERSION/$(VERSION) - Core $(CORE)/g" \
		$(DIR_SRC)/config/syslinux/syslinux.cfg \
		> $(DIR_TMP)/cdrom/boot/isolinux/isolinux.cfg
endif

ifeq "$(HAS_MEMTEST)" "1"
	# Install memtest
	cp /usr/lib/memtest86+/memtest.efi $(DIR_TMP)/cdrom/boot/isolinux/memtest
endif

ifeq "$(HAS_IPXE)" "1"
	cp /usr/share/ipfire-netboot/ipxe.lkrn $(DIR_TMP)/cdrom/boot/isolinux/netboot
endif

ifeq "$(EFI)" "1"
	# Generate embedded GRUB configuration
	sed -e "s/NAME/$(NAME)/g" -e "s/VERSION/$(VERSION)/g" -e "s/ARCH/$(BUILD_ARCH)/g" \
		$(DIR_SRC)/config/cdrom/grub-efi.cfg > /tmp/grub-efi.cfg

	# Build a GRUB EFI image
	mkdir -pv $(DIR_TMP)/cdrom/EFI/BOOT
	grub-mkimage \
		--format=$(GRUB_ARCH)-efi \
		--output=$(DIR_TMP)/cdrom/EFI/BOOT/boot$(EFI_ARCH).efi \
		--config=$(DIR_TMP)/grub-efi.cfg \
		--compression=xz \
		--prefix=/EFI/BOOT \
		$$(for mod in $(GRUB_EFI_MODULES); do [ -f "/usr/lib/grub/$(GRUB_ARCH)-efi/$${mod}.mod" ] && echo "$${mod}"; done)

	# Install GRUB configuration
	mkdir -pv $(DIR_TMP)/cdrom/EFI/BOOT
	sed -e "s/NAME/$(NAME)/g" -e "s/VERSION/$(VERSION)/g" -e "s/ARCH/$(BUILD_ARCH)/g" \
		< $(DIR_SRC)/config/cdrom/grub.cfg > $(DIR_TMP)/cdrom/EFI/BOOT/grub.cfg

	# Create the EFI Eltorito image
	dd if=/dev/zero of=$(DIR_TMP)/cdrom/boot/isolinux/efiboot.img bs=1k count=1440
	mkdosfs -F 12 -n "IPFIRE_EFI" $(DIR_TMP)/cdrom/boot/isolinux/efiboot.img

	# Mount the EFI image
	mkdir -pv $(DIR_TMP)/efiboot.img
	mount -o loop $(DIR_TMP)/cdrom/boot/isolinux/efiboot.img $(DIR_TMP)/efiboot.img

	# Copy the bootloader into the image
	mkdir -p $(DIR_TMP)/efiboot.img/EFI/BOOT
	cp -a $(DIR_TMP)/cdrom/EFI/BOOT/boot$(EFI_ARCH).efi \
		$(DIR_TMP)/efiboot.img/EFI/BOOT/boot$(EFI_ARCH).efi

	# Cleanup
	umount $(DIR_TMP)/efiboot.img
	rm -rf $(DIR_TMP)/efiboot.img $(DIR_TMP)/grub-efi.cfg
endif

	cd $(DIR_TMP)/cdrom && find -type f ! -name md5sum.txt | grep -v "./boot" | \
						xargs md5sum > md5sum.txt

	mkdir -p /install/images
	cd $(DIR_TMP)/cdrom && mkisofs $(ISO_ARGS) -o $(ISO_FILE) .

ifeq "$(HAS_ISOLINUX)" "1"
	isohybrid $(ISOHYBRID_ARGS) $(ISO_FILE)
endif
