# Description:	Linux CRUX distribution image
# URL:		https://github.com/ruxr/CRUX
# Maintainer:	Roman Oreshnikov, r dot oreshnikov at gmail dot com
# Depends on:	ALL cdrkit core syslinux

name=iso
version=3.7
release=1
source=(README init setup)

build() {
  mkdir -p rootfs isofs/{boot/isolinux,crux}

  # Install kernel
  sh $PKGMK_PACKAGE_DIR/CRUX-$version-kernel.run $SRC/rootfs
  mv rootfs/boot/vmlinuz isofs/boot
  rm -r rootfs/boot

  # Create file list for initramfs
  A= N=$(
	# coreutils
	echo /bin/{date,ln,mkdir,readlink,rm,sleep,stty} /usr/bin/chroot
	# dash
	echo /bin/dash
	# dosfstools
	echo /sbin/mkfs.fat
	# dhcpcd
	echo /sbin/dhcpcd /lib/dhcpcd/dev/udev.so
	# e2fsprogs
	echo /sbin/mkfs.ext4 /etc/mke2fs.conf
	# eudev
	echo /sbin/{udevadm,udevd} $(pkginfo -l eudev |
		sed '/\/$/d;/udev\//!d;s%^%/%;/conf$/d')
	# glibc
	pkginfo -l glibc | sed '/lib\//!d;/\/$/d
		/\/audit/d;/\/gconv/d;/\/getconf/d;/libBrokenLocale/d
		/libmvec/d;/libcidn/d;/libpcprofile/d;/libthread_db/d
		/nss_compat/d;/nss_db/d;/nss_hesiod/d;/nss_nis/d;s%^%/%'
	echo /etc/{host,nsswitch}.conf /sbin/ldconfig
	echo /usr/lib/gconv/IBM850.so # for mkfs.fat
	# inetutils
	echo /bin/hostname
	# iproute2
	echo /sbin/ip /etc/iproute2/*
	# kmod
	echo /sbin/*mod*
	# linux-pam
	echo /lib/security/pam_unix.so
	# ncurses
	echo /usr/share/terminfo/{l/linux,v/vt100,x/xterm}
	# pkgnew
	echo /usr/sbin/pkguse
	# pkgutils
	echo /usr/bin/{pkgadd,pkginfo,pkgrm}
	# readline
	echo /etc/inputrc
	# sed
	echo /bin/sed
	# shadow
	echo /bin/login
	# sysvinit
	echo /sbin/{init,killall5,poweroff,reboot,shutdown}
	# tar
	echo /bin/tar
	# util-linux
	echo /bin/{mount,umount} /sbin/{agetty,mkswap,sfdisk,switch_root}
	# wget
	echo /usr/bin/wget
	# xz
	echo /usr/bin/xz
  )
  while [ -n "$N" ]; do
	set -- $N; N=
	for F do
		case " $A " in
		*\ $F\ *);;
		*) echo $F; A=$A\ $F N=$N\ $(case $(file -b $F) in
			*ELF*) ldd $F | sed '/\//!d;s%^[^/]*%%;s/ .*//
				s%/\./%/%g;s%[^/]*/\.\./%%g
				s%/lib64/%/lib/%';;
			symbolic*) readlink -f $F
			esac)
		esac
	done
  done >initramfs.use

  # Create file tree for initramfs
  cd rootfs
  install -d dev etc/pam.d media mnt proc run sys usr \
	var/{cache,empty,lib{,/dhcpcd,/pkg},log}
  install -dm 1777 tmp var/{lock,tmp}
  ln -s lib lib64
  ln -s lib usr/lib64
  ln -s ../run var/run
  ln -s /proc/mounts etc/mtab
  tar -cf - -T ../initramfs.use | tar -xf -
  # Opimize eudev files & etc
  sed -i '/^#/d;/^$/d' */udev/*.d/* etc/{{host,nsswitch}.conf,inputrc}
  mv bin/dash bin/sh
  ldconfig -r $SRC/rootfs
  
  # Create files
  touch etc/{motd,resolv.conf}
  cat <<-END >bin/seconsole
	#!/bin/sh
	if /bin/stty -F /dev/ttyS0 >/dev/null 2>&1; then
		exec /sbin/agetty 38400 ttyS0 vt100
	else
		exec /bin/sleep 365d
	fi
	END
  cat <<-END >bin/setup-chroot
	#!/bin/sh
	mount --bind /proc /mnt/proc
	mount --bind /sys /mnt/sys
	mount --rbind /dev /mnt/dev
	mount --bind /run /mnt/run
	mount --bind /tmp /mnt/tmp
	chroot /mnt /bin/sh
	END
  cat <<-END >etc/dhcpcd.conf
	clientid
	option domain_name_servers, domain_name, domain_search
	END
  cat <<-END >etc/fstab
	devpts /dev/pts devpts noexec,nosuid,gid=tty,mode=0620 0 0
	tmpfs /tmp tmpfs defaults 0 0
	END
  cat <<-END >etc/group
	root::0:
	daemon::1:
	sys::2:
	kmem::3:
	input::4:
	tty::5:
	disk::6:
	lp::7:
	cdrom::8:
	tape::9:
	audio::10:
	video::11:
	dialout::12:
	kvm::13:
	nobody::99:
	cron::100:
	END
  echo 127.0.0.1 localhost >etc/hosts
  cat <<-END >etc/inittab
	id:2:initdefault:
	rc::sysinit:/etc/rc
	rs:S1:wait:/etc/rc.single
	rd:06:wait:/etc/rc.shutdown
	su:S:wait:/sbin/sulogin -p
	c1:2:respawn:/sbin/agetty --autologin root --noclear 38400 tty1 linux
	c2:2:respawn:/sbin/agetty 38400 tty2 linux
	c3:2:respawn:/sbin/agetty 38400 tty3 linux
	s1:2:respawn:/bin/seconsole
	ca::ctrlaltdel:/sbin/shutdown -t3 -r now
	END
  cat <<-END >etc/issue

	CRUX-$version (\n) (\l)

	END
  cat <<-END >etc/pam.d/login
	auth		required	pam_unix.so nullok
	account		required	pam_unix.so
	password	required	pam_unix.so
	session		required	pam_unix.so
	END
  cat <<-END >etc/passwd
	root:x:0:0:root:/root:/bin/sh
	daemon:x:1:1:daemon:/:
	nobody:x:99:99:nobody:/:
	END
  echo export PATH=/bin:/usr/bin:/sbin:/usr/sbin >etc/profile
  cat <<-END >etc/rc
	#!/bin/sh
	echo The system is coming up. Please wait
	/bin/hostname crux-new
	/bin/mount -a
	/sbin/ip addr add 127.0.0.1/8 dev lo broadcast + scope host
	/sbin/ip link set lo up
	/sbin/dhcpcd -q
	END
  cat <<-END >etc/rc.shutdown
	#!/bin/sh
	/bin/stty onlcr
	echo The system is coming down. Please wait
	/sbin/killall5 -15
	/bin/sleep 5
	/sbin/killall5 -9
	/bin/umount -a -r
	[ "\$RUNLEVEL" = 0 ] && /sbin/poweroff -d -f -i || /sbin/reboot -d -f -i
	END
  cat <<-END >etc/rc.single
	#!/bin/sh
	/sbin/killall5 -15
	/bin/sleep 5
	/sbin/killall5 -9
	exec /sbin/init -t1 S
	END
  cat <<-END >etc/shadow
	root::::::::
	daemon:x:::::::
	nobody:x:::::::
	END
  echo /bin/sh >etc/shells
  cat <<-END >lib/dhcpcd/dhcpcd-run-hooks
	#!/bin/sh
	case \$reason in BOUND) {
		if [ -n "\$new_domain_search" ]; then
			echo search "\$new_domain_search"
		elif [ -n "\$new_domain_name" ]; then
			echo search "\$new_domain_name"
		fi
		for ns in \$new_domain_name_servers; do
			echo "nameserver \$ns"
		done
		} >/etc/resolv.conf
	esac
	END
  chmod 755 bin/{seconsole,setup-chroot} etc/rc* lib/dhcpcd/dhcpcd-run-hooks
  install ../setup bin
  install ../init ./init

  # Create package database
  find . | awk '
	/\/$/	{ next }
	/^\./	{ sub("./", ""); if($1 != ".") a[$1] = ""; next }
	/^$/	{ n = v = ""; next }
	{
		if(v) { if($1 in a) a[$1] = n }
		else if(n) { p[n] = v = $1 } else { n = $1 }
	}
	END{
		for(i in a) if(n = a[i]) u[n] = n
		asort(u)
		for(n in u) {
			print (n = u[n]) "\n" p[n]
			delete f; for(i in a) if(a[i] == n) delete a[f[i] = i]
			asort(f); for(i in f) print f[i]
			print ""
		}
	}' - /var/lib/pkg/db >var/lib/pkg/db

  # Create initramfs
  find . | sort | cpio -o -H newc | gzip -9 >../initramfs
  cd ..
  rm -r rootfs

  # Create ISO tree
  mv initramfs isofs/boot
  cp README isofs
  cat <<-END >isofs/boot/isolinux/isolinux.msg

	Welcome to the CRUX-$version install-media!

	Press <Enter> to boot using the default image

	To change root filesystem type: CRUX root=/dev/<device>

	END
  cat <<-END >isofs/boot/isolinux/isolinux.cfg
	SERIAL 0 38400
	DISPLAY /boot/isolinux/isolinux.msg
	PROMPT 1
	DEFAULT CRUX
	LABEL CRUX
	  KERNEL /boot/vmlinuz
	  APPEND initrd=/boot/initramfs console=ttyS0,38400 console=tty0
	END
  cp /usr/share/syslinux/{isolinux.bin,ldlinux.c32} isofs/boot/isolinux

  # Copy packages & etc
  cp $PKGMK_PACKAGE_DIR/PKG.* $PKGMK_PACKAGE_DIR/*.run $PKGMK_PACKAGE_DIR/*#* \
	isofs/crux

  # Create ISO image
  D=$SRC/isofs/boot
  echo -e "$D 100\n$D/isolinux 200\n$D/isolinux/isolinux.bin 300" >iso
  genisoimage -R -l -J -V CRUX-$version -A CRUX \
	-b boot/isolinux/isolinux.bin -c boot/isolinux/isolinux.boot \
	-no-emul-boot -boot-load-size 4 -boot-info-table \
	-sort iso -input-charset utf-8 -o CRUX-$version.iso isofs
  isohybrid CRUX-$version.iso
  mv CRUX-$version.iso $PKGMK_PACKAGE_DIR

  mkdir $PKG/boot
}