#!/bin/bash

# Synopsis: update_fstab_on_target
#
# This function is partly adapted from the Knoppix-Installer
# It creates a new fstab for the new installed system in $TARGET.
#   * proc, usbfs, sysfs, tmpfs: hardcoded
#   * all mountpoints of the hd_map
#   * cdroms, floppy
#   * remove not needed device links
function update_fstab_on_target()
{
	send install_step update_fstab_on_target
	emit_progress 0
	local progress_steps=$(( $(wc -l <<<"$cfg_hdmap") + 2 ))
	local progress=0
	
	# Charset stuff for FAT/NTFS-Filesystems
	unset utf_option nls
	if [ "$(locale charmap)" = "UTF-8" ]; then
		utf_option=",utf8"
		nls=",nls=utf8"
	fi
	chroot_it locale-gen &>/dev/null
	
	# Build new /etc/fstab
	cat <<EOF >$TARGET/etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
EOF

	[ -x $TARGET/etc/init.d/mountkernfs.sh ] || cat <<EOF >>$TARGET/etc/fstab
sysfs           /sys            sysfs   defaults        0       0
tmpfs           /dev/shm        tmpfs   defaults        0       0
EOF

	while IFS=: read device mountpoint filesystem automount
	do
		[ -z "$mountpoint" ] && continue

		fstab_options=""; fstab_dump=0; fstab_pass=2; fstab_type=""
		[ -z "$fstab_type" ] && fstab_type=$filesystem
		[ -z "$fstab_type" ] && fstab_type=$(get_filesystem $device)
		[ -z "$fstab_type" ] && fstab_type=auto
		
		case "$automount" in
		auto)
			fstab_options="defaults";;
		*)
			fstab_options="noauto,users";;
		esac
		
		case "$fstab_type" in
		msdos)
			fstab_options="${fstab_options},umask=000,quiet${utf_option}"; fstab_pass=0;;
		vfat)
			fstab_options="${fstab_options},umask=000,shortname=mixed,quiet${utf_option}"; fstab_pass=0;;
		esac
		
		if [ "$mountpoint" = "/" ]; then
			fstab_pass=1
			case $fstab_type in
			reiser*|xfs|jfs)
				fstab_options="defaults"
				;;
			*)
				fstab_options="defaults,errors=remount-ro"
				;;
			esac
		elif [ "${mountpoint:0:7}" = "/media/" ]; then
			# don't run fsck on boot for all /media/* mountpoints
			fstab_pass=0
		else
			# don't run fsck on boot if device is a removable disk (if group of /dev/XXX == floppy)
			[ "$(stat --format "%G" $device)" = "floppy" ] && fstab_pass=0
		fi
		
		fstab_options="${fstab_options##defaults,}"
		
		unset DEV UUID
		case $device in
		/dev/mapper/*) ;;
		/dev/disk/by-uuid/*) DEV=/dev/$(readlink $device|sed s@../../@@)
				     UUID="UUID=${device#/dev/disk/by-uuid/}"
				     ;;
		/dev/*) DEV=$device
			UUID="UUID=$(get_partition_uuid $device)"
			;;
		UUID=*) UUID=$device
			DEV=/dev/$(readlink /dev/disk/by-uuid/${device#UUID=}|sed s@../../@@)
			;;
		esac
	
		[ -n "${DEV#/dev/}" ] && echo "# $DEV" >> $TARGET/etc/fstab
		if [ -n "${UUID#UUID=}" ]; then
			printf "%-15s %-15s %-7s %-15s %-7s %s\n" "$UUID" "$mountpoint" "$fstab_type" "$fstab_options" "$fstab_dump" "$fstab_pass" >> $TARGET/etc/fstab
		else
			# this partition doesn't have an UUID
			printf "%-15s %-15s %-7s %-15s %-7s %s\n" "$device" "$mountpoint" "$fstab_type" "$fstab_options" "$fstab_dump" "$fstab_pass" >> $TARGET/etc/fstab
		fi
		
		# Remove not needed device links
		[ "/media/${device##*/}" != "$mountpoint" ] && rmdir "$TARGET/media/${device##*/}" &>/dev/null
		rm -f "$TARGET/home/$cfg_username/Desktop/${device##*/}"
		
		# update progress
		progress=$[progress+1]; emit_progress $[100*progress/progress_steps]
	done <<<"$cfg_hdmap"

	# Add swap to /etc/fstab
	while read device
	do
		UUID="$(get_partition_uuid $device)"
		if [ -z "$UUID" ]; then
			# swap partition without UUID
			swapoff $device
			mkswap $device
			swapon $device
			UUID="$(get_partition_uuid $device)"
		fi
		[ -z "$UUID" ] && continue # should never happen...
		
		printf "%-15s %-15s %-7s %-15s %-7s %s\n" "UUID=$UUID" "none" "swap" "sw" "0" "0" >> $TARGET/etc/fstab
	done < <(list_swap_partitions)
	
	# Add cdrom devices to /etc/fstab

	CDROM=0
	for c in $(gawk '/name/{for (i=NF;i>=3;i--) {print $i}}' /proc/sys/dev/cdrom/info 2>/dev/null); do
	 [ -d $TARGET/media/cdrom$CDROM ] || mkdir -p $TARGET/media/cdrom$CDROM
	 if [ "$CDROM" = "0" ]; then
	  if [ "$(readlink $TARGET/media/cdrom)" != "cdrom0" ]; then
	   rm -f $TARGET/media/cdrom
	   ln -s cdrom0 $TARGET/media/cdrom
	  fi
	  if [ "$(readlink $TARGET/cdrom)" != "media/cdrom" ]; then
	   rm -f $TARGET/cdrom
	   ln -s media/cdrom $TARGET/cdrom
	  fi
	 fi
	 printf "%-15s %-15s %-7s %-15s %-7s %s\n" "/dev/$c" "/media/cdrom$CDROM" "udf,iso9660" "user,noauto" "0" "0" >> $TARGET/etc/fstab
	 CDROM=$(($CDROM+1))
	done
	if [ "$CDROM" = "0" ]; then
	 rm -f $TARGET/cdrom $TARGET/media/cdrom
	fi

	# Add floppy devices to /etc/fstab

	for f in $(ls -d /sys/block/fd* 2>/dev/null); do
	 [ -d $TARGET/media/floppy${f#/sys/block/fd} ] || mkdir -p $TARGET/media/floppy${f#/sys/block/fd}
	 printf "%-15s %-15s %-7s %-15s %-7s %s\n" "/dev${f#/sys/block}" "/media/floppy${f#/sys/block/fd}" "auto" "rw,user,noauto" "0" "0" >> $TARGET/etc/fstab
	done
	
}

# Synopsis: update_passwd_on_target
#
function update_passwd_on_target()
{
    send install_step update_passwd_on_target
    chroot $TARGET sh -c "usermod --password '$cfg_rootpwd' root"
    
    if [ -x $ROOT/usr/sbin/adduser ]; then
        LC_ALL=C chroot $TARGET adduser --disabled-password --force-badname --no-create-home --gecos "$cfg_realname,,," --uid 1000 "$cfg_username" >/dev/null
    else
        chroot $TARGET useradd -c "$cfg_realname,,," "$cfg_username" -u 1000 >/dev/null
    fi

    chroot $TARGET sh -c "usermod --password '$cfg_userpwd' '$cfg_username'"

    for group in lpadmin scanner; do
            chroot $TARGET addgroup --system $group >/dev/null 2>&1
    done
    for group in adm audio cdrom dialout floppy video plugdev dip lpadmin lp scanner powerdev netdev; do
            chroot $TARGET adduser --force-badname "$cfg_username" $group >/dev/null 2>&1
    done
}

# Synopsis: copy_home_to_target
#
# This function copies the home directory from the live user
function copy_home_to_target()
{
	send install_step copy_home_to_target
	#check if already data is there then stop
	if [ -d "$TARGET/home/$cfg_username" ]; then
		chroot "$TARGET" chown -R "$cfg_username":"$cfg_username" "/home/$cfg_username"
		return 0
	fi

	if [ -d "/home/$FLL_LIVE_USER/.kde" ]; then
		rm -rf "$TARGET/home/$FLL_LIVE_USER"
		cp -a "/home/$FLL_LIVE_USER" "$TARGET/home"
		[ "$cfg_username" != "$FLL_LIVE_USER" ] && mv "$TARGET/home/$FLL_LIVE_USER" "$TARGET/home/$cfg_username"
	else
		cp -a "$TARGET/etc/skel" "$TARGET/home"
		mv "$TARGET/home/skel" "$TARGET/home/$cfg_username"
	fi

	# update home-path in user's config files
	if [ "$cfg_username" != "$FLL_LIVE_USER" ]; then
		rm -f "$TARGET/home/$cfg_username/.mozilla/appreg"
		rm -f "$TARGET/home/$cfg_username/.mozilla/pluginreg.dat"
		if [ -e "$TARGET/home/$cfg_username/.mozilla/$FLL_LIVE_USER" ]; then
			[ -e "$TARGET/home/$cfg_username/.mozilla/default" ] || mv "$TARGET/home/$cfg_username/.mozilla/$FLL_LIVE_USER" "$TARGET/home/$cfg_username/.mozilla/default"
			perl -pi -e 's/.*general.useragent.*\n?//' "$TARGET/home/$cfg_username/.mozilla/default/*/prefs.js"
		fi

		OLDHOME="/home/$FLL_LIVE_USER"
		NEWHOME="/home/$cfg_username"
		PART="$TARGET"
		for f in $(find "$PART$NEWHOME" -exec grep -ls "$OLDHOME" {} \;|grep -v $0); do
			perl -pi -e "s|$OLDHOME|$NEWHOME|g" "$f"
		done
	fi

	# revert to plain debian .bashrc
	cat "$TARGET/etc/skel/.bashrc" > "$TARGET/home/$cfg_username/.bashrc"
	
	# revert kdesu/sudo workaround
	rm -f "$TARGET/home/$cfg_username/.kde/share/apps/konsole/su.desktop" \
		"$TARGET/home/$cfg_username/.kde/share/apps/konsole/sumc.desktop" \
		"$TARGET/home/$cfg_username/.kde/share/config/kdesurc" \
		"$TARGET/home/$cfg_username/.kde4/share/config/kdesurc" \
		"$TARGET/home/$cfg_username/.su-to-rootrc"
        rm -rf "$TARGET/home/$cfg_username/.gconf/apps/gksu"
	
	# force kde first time configuration
	if [ -f /etc/skel/.kde/share/config/kpersonalizerrc ]; then
		perl -pi -e 's/FirstLogin=false/FirstLogin=true/g' "$TARGET/etc/skel/.kde/share/config/kpersonalizerrc"

		# The users kde should be perfect, unless we just copied from template ...
		[ ! -d "/home/$FLL_LIVE_USER/.kde" ] && perl -pi -e 's/FirstLogin=false/FirstLogin=true/g' "$TARGET/home/$cfg_username/.kde/share/config/kpersonalizerrc"
	fi
	
	chroot "$TARGET" chown -R "$cfg_username":"$cfg_username" "/home/$cfg_username"
}

# Synopsis: copy_etc_to_target
#
# This function is partly adapted from the Knoppix-Installer
function copy_etc_to_target()
{
	send install_step copy_etc_to_target
	# UTC=no fix
	if [ -f /etc/default/rcS -a -f $TARGET/etc/default/rcS ]; then
		cat /etc/default/rcS > $TARGET/etc/default/rcS
	fi
	
	cp -a /etc/timezone $TARGET/etc/timezone
	cp -a /etc/localtime $TARGET/etc/localtime
	cp -a /etc/default/keyboard $TARGET/etc/default/keyboard
	cp -a /etc/default/locale $TARGET/etc/default/locale
	cp -a /etc/locale.gen $TARGET/etc/locale.gen
	#cp -a /etc/console/* $TARGET/etc/console/
	#cp -a /etc/environment $TARGET/etc/environment
	
	# network
	rm -f $TARGET/etc/network/interfaces
	cp -a /etc/network/interfaces $TARGET/etc/network/interfaces

	# create locales
	chroot_it locale-gen &>/dev/null
	chroot_it dpkg-reconfigure -fnoninteractive keyboard-configuration &>/dev/null

	# nvidia autoinstall trigger
	chroot_it update-rc.d -f kanotix remove &>/dev/null
	rm -f $TARGET/etc/init.d/kanotix

	# xorg.conf
	debconf-get-selections | grep -e xserver-xorg -e tzdata | chroot_it debconf-set-selections &>/dev/null
	rm -f $TARGET/etc/X11/xorg.conf*
	chroot_it dpkg-reconfigure -phigh xserver-xorg &>/dev/null

	# Save ALSA sound volume
	if [ -e /proc/asound/modules ] && [ -x /usr/sbin/alsactl ]; then
		/usr/sbin/alsactl store
		if [ -f /var/lib/alsa/asound.state ]; then
			cp /var/lib/alsa/asound.state "$TARGET/var/lib/alsa"
		fi
	fi
	
	# KDM: auto login
	kdmrc=$TARGET/etc/kde3/kdm/kdmrc
	[ -f $TARGET/etc/kde4/kdm/kdmrc ] && kdmrc=$TARGET/etc/kde4/kdm/kdmrc
	if [ -e $kdmrc ]; then
		perl -pi -e "s|^[#\s]*(AutoLoginUser).*|\1=$cfg_username|"  $kdmrc
		[ "$cfg_autologin" = "on" ] && autologin="true" || autologin="false"
		perl -pi -e "s|^[#\s]*(AutoLoginEnable).*|\1=$autologin|"  $kdmrc
	fi

	# Crypto
	cp -a /etc/crypttab $TARGET/etc/crypttab

	# PolicyKit
	if [ -e /etc/PolicyKit/PolicyKit.conf -a -e $TARGET/etc/PolicyKit/PolicyKit.conf ]; then
		sed '/<!-- .* user in live session -->/d; s/user="'"$FLL_LIVE_USER"'"/user="'"$cfg_username"'"/;' \
		< /etc/PolicyKit/PolicyKit.conf > $TARGET/etc/PolicyKit/PolicyKit.conf
	fi
}