#!/bin/sh
#-
# Copyright (c) 2012-2015 Juan Romero Pardines <xtraeme@voidlinux.eu>.
#               2012 Dave Elusive <davehome@redthumb.info.tm>.
#				2016 milisarge <milisarge@gmail.com>.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#-

# Make sure we don't inherit these from env.
SOURCE_DONE=
HOSTNAME_DONE=
KEYBOARD_DONE=
LOCALE_DONE=
TIMEZONE_DONE=
ROOTPASSWORD_DONE=
USERNAME_DONE=
USERPASSWORD_DONE=
BOOTLOADER_DONE=
PARTITIONS_DONE=
NETWORK_DONE=
FILESYSTEMS_DONE=

TARGETDIR=/mnt/hedef
LOG=/dev/tty8
CONF_FILE=/tmp/.milis-kur.conf
if [ ! -f $CONF_FILE ]; then
    touch -f $CONF_FILE
fi
ANSWER=$(mktemp -t miliskur-XXXXXXXX || exit 1)
TARGET_FSTAB=$(mktemp -t miliskur-fstab-XXXXXXXX || exit 1)

trap "DIE" INT TERM QUIT

# disable printk
if [ -w /proc/sys/kernel/printk ]; then
    echo 0 >/proc/sys/kernel/printk
fi

# Detect if this is an EFI system.
if [ -e /sys/firmware/efi/systab ]; then
    EFI_SYSTEM=1
fi

# dialog colors
BLACK="\Z0"
RED="\Z1"
GREEN="\Z2"
YELLOW="\Z3"
BLUE="\Z4"
MAGENTA="\Z5"
CYAN="\Z6"
WHITE="\Z7"
BOLD="\Zb"
REVERSE="\Zr"
UNDERLINE="\Zu"
RESET="\Zn"

# Properties shared per widget.
MENULABEL="${BOLD}Ok tuşlarıyla menüyü gezinme,TAB tuşuyla butonlar arası geçiş,ENTER tuşuyla seçim yapın.${RESET}"
MENUSIZE="14 60 0"
INPUTSIZE="8 60"
MSGBOXSIZE="8 70"
YESNOSIZE="$INPUTSIZE"
WIDGET_SIZE="10 70"

DIALOG() {
    rm -f $ANSWER
    dialog --colors --keep-tite --no-shadow --no-mouse \
        --backtitle "${BOLD}${WHITE}Milis İşletim Sistemi kurulumu -- Milis 1.0 milisarge@gmail.com ${RESET}" \
        --cancel-label "Geri" --aspect 20 "$@" 2>$ANSWER
    return $?
}

DIE() {
    rval=$1
    [ -z "$rval" ] && rval=0
    clear
    rm -f $ANSWER $TARGET_FSTAB
    # reenable printk
    if [ -w /proc/sys/kernel/printk ]; then
        echo 4 >/proc/sys/kernel/printk
    fi
    umount_filesystems
    exit $rval
}

set_option() {
    if grep -Eq "^${1}.*" $CONF_FILE; then
        sed -i -e "/^${1}.*/d" $CONF_FILE
    fi
    echo "${1} ${2}" >>$CONF_FILE
}

get_option() {
    echo $(grep -E "^${1}.*" $CONF_FILE|sed -e "s|${1}||")
}

show_disks() {
    local dev size sectorsize gbytes

    # IDE
    for dev in $(ls /sys/block|grep -E '^hd'); do
        if [ "$(cat /sys/block/$dev/device/media)" = "disk" ]; then
            # Find out nr sectors and bytes per sector;
            echo "/dev/$dev"
            size=$(cat /sys/block/$dev/size)
            sectorsize=$(cat /sys/block/$dev/queue/hw_sector_size)
            gbytes="$(($size * $sectorsize / 1024 / 1024 / 1024))"
            echo "size:${gbytes}GB;sector_size:$sectorsize"
        fi
    done
    # SATA/SCSI and Virtual disks (virtio)
    for dev in $(ls /sys/block|grep -E '^([sv]|xv)d|mmcblk'); do
        echo "/dev/$dev"
        size=$(cat /sys/block/$dev/size)
        sectorsize=$(cat /sys/block/$dev/queue/hw_sector_size)
        gbytes="$(($size * $sectorsize / 1024 / 1024 / 1024))"
        echo "size:${gbytes}GB;sector_size:$sectorsize"
    done
    # cciss(4) devices
    for dev in $(ls /dev/cciss 2>/dev/null|grep -E 'c[0-9]d[0-9]$'); do
        echo "/dev/cciss/$dev"
        size=$(cat /sys/block/cciss\!$dev/size)
        sectorsize=$(cat /sys/block/cciss\!$dev/queue/hw_sector_size)
        gbytes="$(($size * $sectorsize / 1024 / 1024 / 1024))"
        echo "size:${gbytes}GB;sector_size:$sectorsize"
    done
}

show_partitions() {
    local dev fstype fssize p part

    set -- $(show_disks)
    while [ $# -ne 0 ]; do
        disk=$(basename $1)
        shift 2
        # ATA/SCSI/SATA
        for p in /sys/block/$disk/$disk*; do
            if [ -d $p ]; then
                part=$(basename $p)
                fstype=$(lsblk -nfr /dev/$part|awk '{print $2}'|head -1)
                [ "$fstype" = "iso9660" ] && continue
                [ "$fstype" = "crypto_LUKS" ] && continue
                [ "$fstype" = "LVM2_member" ] && continue
                fssize=$(lsblk -nr /dev/$part|awk '{print $4}'|head -1)
                echo "/dev/$part"
                echo "size:${fssize:-unknown};fstype:${fstype:-none}"
            fi
        done
    done
    # Software raid (md)
    for p in $(ls -d /dev/md* 2>/dev/null|grep '[0-9]'); do
        part=$(basename $p)
        if cat /proc/mdstat|grep -qw $part; then
            fstype=$(lsblk -nfr /dev/$part|awk '{print $2}')
            [ "$fstype" = "crypto_LUKS" ] && continue
            [ "$fstype" = "LVM2_member" ] && continue
            fssize=$(lsblk -nr /dev/$part|awk '{print $4}')
            echo "$p"
            echo "size:${fssize:-unknown};fstype:${fstype:-none}"
        fi
    done
    # cciss(4) devices
    for part in $(ls /dev/cciss 2>/dev/null|grep -E 'c[0-9]d[0-9]p[0-9]+'); do
        fstype=$(lsblk -nfr /dev/cciss/$part|awk '{print $2}')
        [ "$fstype" = "crypto_LUKS" ] && continue
        [ "$fstype" = "LVM2_member" ] && continue
        fssize=$(lsblk -nr /dev/cciss/$part|awk '{print $4}')
        echo "/dev/cciss/$part"
        echo "size:${fssize:-unknown};fstype:${fstype:-none}"
    done
    if [ -e /sbin/lvs ]; then
        # LVM
        lvs --noheadings|while read lvname vgname perms size; do
            echo "/dev/mapper/${vgname}-${lvname}"
            echo "size:${size};fstype:lvm"
        done
    fi
}

menu_filesystems() {
    local dev fstype fssize mntpoint reformat

    while true; do
        DIALOG --title " Ayarlamak için bir disk bölümü seçiniz. " --menu "$MENULABEL" \
            ${MENUSIZE} $(show_partitions)
        [ $? -ne 0 ] && return

        dev=$(cat $ANSWER)
        DIALOG --title " $dev için bir dosya sistemi seçiniz. " \
            --menu "$MENULABEL" ${MENUSIZE} \
            "btrfs" "Oracle's Btrfs" \
            "ext2" "Linux ext2 (no journaling)" \
            "ext3" "Linux ext3 (journal)" \
            "ext4" "Linux ext4 (journal)" \
            "f2fs" "Flash-Friendly Filesystem" \
            "swap" "Linux swap" \
            "vfat" "FAT32" \
            "xfs" "SGI's XFS"
        if [ $? -eq 0 ]; then
            fstype=$(cat $ANSWER)
        else
            continue
        fi
        if [ "$fstype" != "swap" ]; then
            DIALOG --inputbox " $dev için bir bağlama noktası seçiniz:" ${INPUTSIZE}
            if [ $? -eq 0 ]; then
                mntpoint=$(cat $ANSWER)
            elif [ $? -eq 1 ]; then
                continue
            fi
        else
            mntpoint=swap
        fi
        DIALOG --yesno " $dev üzerinde yeni bir dosya sistemi oluşturmak istiyor musunuz?" ${YESNOSIZE}
        if [ $? -eq 0 ]; then
            reformat=1
        elif [ $? -eq 1 ]; then
            reformat=0
        else
            continue
        fi
        fssize=$(lsblk -nr $dev|awk '{print $4}')
        set -- "$fstype" "$fssize" "$mntpoint" "$reformat"
        if [ -n "$1" -a -n "$2" -a -n "$3" -a -n "$4" ]; then
            local bdev=$(basename $dev)
            local ddev=$(basename $(dirname $dev))
            if [ "$ddev" != "dev" ]; then
                sed -i -e "/^MOUNTPOINT \/dev\/${ddev}\/${bdev}.*/d" $CONF_FILE
            else
                sed -i -e "/^MOUNTPOINT \/dev\/${bdev}.*/d" $CONF_FILE
            fi
            echo "MOUNTPOINT $dev $1 $2 $3 $4" >>$CONF_FILE
        fi
    done
}

menu_partitions() {
    DIALOG --title " Bölümleme yapmak için bir disk seçiniz. " \
        --menu "$MENULABEL" ${MENUSIZE} $(show_disks)
    if [ $? -eq 0 ]; then
        local device=$(cat $ANSWER)

        DIALOG --title "Modify Partition Table on $device" --msgbox "\n
${BOLD}cfdisk will be executed in disk $device.${RESET}\n\n
For BIOS systems, MBR or GPT partition tables are supported.\n
To use GPT on PC BIOS systems an empty partition of 1MB must be added\n
at the first 2GB of the disk with the TOGGLE \`bios_grub' enabled.\n
${BOLD}NOTE: you don't need this on EFI systems.${RESET}\n\n
For EFI systems GPT is mandatory and a FAT32 partition with at least\n
100MB must be created with the TOGGLE \`boot', this will be used as\n
EFI System Partition. This partition must have mountpoint as \`/boot/efi'.\n\n
At least 1 partitions is required for the rootfs (/).\n
For swap, RAM*2 must be really enough. For / 600MB are required.\n\n
${BOLD}WARNING: /usr is not supported as a separate partition.${RESET}\n
${RESET}\n" 18 80
        if [ $? -eq 0 ]; then
            while true; do
                clear; cfdisk $device; PARTITIONS_DONE=1
                break
            done
        else
            return
        fi
    fi
}

menu_keymap() {
    local _keymaps="$(find /lib/kbd/keymaps/ -type f -iname "*.map.gz" -printf "%f\n" | sed 's|.map.gz||g' | sort)"
    local _KEYMAPS=

    for f in ${_keymaps}; do
        _KEYMAPS="${_KEYMAPS} ${f} -"
    done
    while true; do
        DIALOG --title " Select your keymap " --menu "$MENULABEL" 14 70 14 ${_KEYMAPS}
        if [ $? -eq 0 ]; then
            set_option KEYMAP "$(cat $ANSWER)"
            loadkeys "$(cat $ANSWER)"
            KEYBOARD_DONE=1
            break
        else
            return
        fi
    done
}

set_keymap() {
    local KEYMAP=$(get_option KEYMAP)

    if [ -f /etc/vconsole.conf ]; then
        sed -i -e "s|KEYMAP=.*|KEYMAP=$KEYMAP|g" $TARGETDIR/etc/vconsole.conf
    else
        sed -i -e "s|#\?KEYMAP=.*|KEYMAP=$KEYMAP|g" $TARGETDIR/etc/rc.conf
    fi
}

menu_locale() {
    local _locales="$(locale --all-locales |awk '{print $1}'|sed -e 's/^#//')"
    local _LOCALES=

    for f in ${_locales}; do
        _LOCALES="${_LOCALES} ${f} -"
    done
    while true; do
        DIALOG --title " yerel bilgi seçimi " --menu "$MENULABEL" 14 70 14 ${_LOCALES}
        if [ $? -eq 0 ]; then
            set_option LOCALE "$(cat $ANSWER)"
            LOCALE_DONE=1
            break
        else
            return
        fi
    done
}

set_locale() {
    if [ -f $TARGETDIR/etc/default/libc-locales ]; then
        #yerelleştirme ayarı yapılacak bashrc de değişim olacak.
        local LOCALE=$(get_option LOCALE)
        sed -i -e "s|LANG=.*|LANG=$LOCALE|g" $TARGETDIR/etc/locale.conf
        # Uncomment locale from /etc/default/libc-locales and regenerate it.
        sed -e "/${LOCALE}/s/^\#//" -i $TARGETDIR/etc/default/libc-locales
    fi
}

menu_timezone() {
    local _tzones="$(cd /usr/share/zoneinfo; find Africa/ America/ Antarctica/ Arctic/ Asia/ Atlantic/ Australia/ Europe/ Indian/ Pacific/ posix/ -type f | sort)"
    local _TIMEZONES=

    for f in ${_tzones}; do
        _TIMEZONES="${_TIMEZONES} ${f} -"
    done
    while true; do
        DIALOG --title " Select your timezone " --menu "$MENULABEL" 14 70 14 ${_TIMEZONES}
        if [ $? -eq 0 ]; then
            set_option TIMEZONE "$(cat $ANSWER)"
            TIMEZONE_DONE=1
            break
        else
            return
        fi
    done
}

set_timezone() {
    local TIMEZONE="$(get_option TIMEZONE)"

    sed -i -e "s|#TIMEZONE=.*|TIMEZONE=$TIMEZONE|g" $TARGETDIR/etc/rc.conf
}

menu_hostname() {
    while true; do
        DIALOG --inputbox "Set the machine hostname:" ${INPUTSIZE}
        if [ $? -eq 0 ]; then
            set_option HOSTNAME "$(cat $ANSWER)"
            HOSTNAME_DONE=1
            break
        else
            return
        fi
    done
}

set_hostname() {
    echo $(get_option HOSTNAME) > $TARGETDIR/etc/hostname
}

menu_rootpassword() {
    local _firstpass= _secondpass= _desc=

    while true; do
        if [ -n "${_firstpass}" ]; then
            _desc="Enter the root password again (password won't be displayed)"
        else
            _desc="Enter the root password (password won't be displayed)"
        fi
        DIALOG --passwordbox "${_desc}" ${MSGBOXSIZE}
        if [ $? -eq 0 ]; then
            if [ -z "${_firstpass}" ]; then
                _firstpass="$(cat $ANSWER)"
            else
                _secondpass="$(cat $ANSWER)"
            fi
            if [ -n "${_firstpass}" -a -n "${_secondpass}" ]; then
                if [ "${_firstpass}" != "${_secondpass}" ]; then
                    DIALOG --infobox "Passwords do not match! please reenter it again" 6 80
                    unset _firstpass _secondpass
                    sleep 2 && continue
                fi
                set_option ROOTPASSWORD "${_firstpass}"
                ROOTPASSWORD_DONE=1
                break
            fi
        else
            return
        fi
    done
}

set_rootpassword() {
    echo "root:$(get_option ROOTPASSWORD)" | chpasswd -R $TARGETDIR -c SHA512
}

menu_useraccount() {
    local _firstpass= _secondpass= _desc=

    while true; do
        DIALOG --inputbox "Birincil kullanıcı adını seçin:" ${INPUTSIZE} "miliskuv"
        if [ $? -eq 0 ]; then
            set_option USERNAME "$(cat $ANSWER)"
            USERNAME_DONE=1
            break
        else
            return
        fi
    done

    while true; do
        if [ -n "${_firstpass}" ]; then
            _desc="Enter the password for '$(get_option USERNAME)' again (password won't be displayed)"
        else
            _desc="Enter the password for '$(get_option USERNAME)' (password won't be displayed)"
        fi
        DIALOG --passwordbox "${_desc}" ${MSGBOXSIZE}
        if [ $? -eq 0 ]; then
            if [ -z "${_firstpass}" ]; then
                _firstpass="$(cat $ANSWER)"
            else
                _secondpass="$(cat $ANSWER)"
            fi
            if [ -n "${_firstpass}" -a -n "${_secondpass}" ]; then
                if [ "${_firstpass}" != "${_secondpass}" ]; then
                    DIALOG --infobox "Passwords do not match! please reenter it again" 6 80
                    unset _firstpass _secondpass
                    sleep 2 && continue
                fi
                set_option USERPASSWORD "${_firstpass}"
                USERPASSWORD_DONE=1
                break
            fi
        else
            return
        fi
    done
}

set_useraccount() {
    useradd -R $TARGETDIR -m -G wheel,audio,video,floppy,cdrom,optical,kvm,xbuilder \
         "$(get_option USERNAME)"
    echo "$(get_option USERNAME):$(get_option USERPASSWORD)" | chpasswd -R $TARGETDIR -c SHA512
}

menu_bootloader() {
    while true; do
        DIALOG --title " Select the disk to install the bootloader" \
            --menu "$MENULABEL" ${MENUSIZE} $(show_disks) none "Manage bootloader otherwise"
        if [ $? -eq 0 ]; then
            set_option BOOTLOADER "$(cat $ANSWER)"
            BOOTLOADER_DONE=1
            break
        else
            return
        fi
    done
}

set_bootloader() {
    local dev=$(get_option BOOTLOADER) grub_args=

    if [ "$dev" = "none" ]; then return; fi

    # Check if it's an EFI system via efivars module.
    if [ -n "$EFI_SYSTEM" ]; then
        grub_args="--target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=milis_grub --recheck"
    fi
    echo "Running grub-install $grub_args $dev..." >$LOG
    chroot $TARGETDIR grub-install $grub_args $dev >$LOG 2>&1
    if [ $? -ne 0 ]; then
        DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} \
        failed to install GRUB to $dev!\nCheck $LOG for errors." ${MSGBOXSIZE}
        DIE 1
    fi
    echo "Running grub-mkconfig on $TARGETDIR..." >$LOG
    chroot $TARGETDIR grub-mkconfig -o /boot/grub/grub.cfg >$LOG 2>&1
    if [ $? -ne 0 ]; then
        DIALOG --msgbox "${BOLD}${RED}ERROR${RESET}: \
        failed to run grub-mkconfig!\nCheck $LOG for errors." ${MSGBOXSIZE}
        DIE 1
    fi
}

test_network() {
    #ağ testi
    if [ $? -eq 0 ]; then
        DIALOG --msgbox "Ağ düzgün çalışıyor!" ${MSGBOXSIZE}
        NETWORK_DONE=1
        return 1
    fi
    DIALOG --msgbox "Ağda sorun var,gerekli ayarları yapınız." ${MSGBOXSIZE}
}

configure_wifi() {
    local dev="$1" ssid enc pass _wpasupconf=/etc/wpa_supplicant/wpa_supplicant.conf

    DIALOG --form "Wireless configuration for ${dev}\n(encryption type: wep or wpa)" 0 0 0 \
        "SSID:" 1 1 "" 1 16 30 0 \
        "Encryption:" 2 1 "" 2 16 4 3 \
        "Password:" 3 1 "" 3 16 50 0 || return 1
    set -- $(cat $ANSWER)
    ssid="$1"; enc="$2"; pass="$3";

    if [ -z "$ssid" ]; then
        DIALOG --msgbox "Invalid SSID." ${MSGBOXSIZE}
        return 1
    elif [ -z "$enc" -o "$enc" != "wep" -a "$enc" != "wpa" ]; then
        DIALOG --msgbox "Invalid encryption type (possible values: wep or wpa)." ${MSXBOXSIZE}
        return 1
    elif [ -z "$pass" ]; then
        DIALOG --msgbox "Invalid AP password." ${MSGBOXSIZE}
    fi

    rm -f ${_wpasupconf%.conf}-${dev}.conf
    cp -f ${_wpasupconf} ${_wpasupconf%.conf}-${dev}.conf
    if [ "$enc" = "wep" ]; then
        echo "network={" >> ${_wpasupconf%.conf}-${dev}.conf
        echo "  ssid=\"$ssid\"" >> ${_wpasupconf%.conf}-${dev}.conf
        echo "  wep_key0=\"$pass\"" >> ${_wpasupconf%.conf}-${dev}.conf
        echo "  wep_tx_keyidx=0" >> ${_wpasupconf%.conf}-${dev}.conf
        echo "  auth_alg=SHARED" >> ${_wpasupconf%.conf}-${dev}.conf
        echo "}" >> ${_wpasupconf%.conf}-${dev}.conf
    else
        wpa_passphrase "$ssid" "$pass" >> ${_wpasupconf%.conf}-${dev}.conf
    fi

    configure_net_dhcp $dev
    return $?
}

configure_net() {
    local dev="$1" rval

    DIALOG --yesno "Do you want to use DHCP for $dev?" ${YESNOSIZE}
    rval=$?
    if [ $rval -eq 0 ]; then
        configure_net_dhcp $dev
    elif [ $rval -eq 1 ]; then
        configure_net_static $dev
    fi
}

iface_setup() {
    ip addr show dev $1|grep -q 'inet '
    return $?
}

configure_net_dhcp() {
    local dev="$1"

    iface_setup $dev
    if [ $? -eq 1 ]; then
        dhcpcd -t 10 -w -4 -L $dev -e "wpa_supplicant_conf=/etc/wpa_supplicant/wpa_supplicant-${dev}.conf" 2>&1 | tee $LOG | \
            DIALOG --progressbox "Initializing $dev via DHCP..." ${WIDGET_SIZE}
        if [ $? -ne 0 ]; then
            DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} failed to run dhcpcd. See $LOG for details." ${MSGBOXSIZE}
            return 1
        fi
        iface_setup $dev
        if [ $? -eq 1 ]; then
            DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} DHCP request failed for $dev. Check $LOG for errors." ${MSGBOXSIZE}
            return 1
        fi
    fi
    test_network
    if [ $? -eq 1 ]; then
        set_option NETWORK "${dev} dhcp"
    fi
}

configure_net_static() {
    local ip gw dns1 dns2 dev=$1

    DIALOG --form "Static IP configuration for $dev:" 0 0 0 \
        "IP address:" 1 1 "192.168.0.2" 1 21 20 0 \
        "Gateway:" 2 1 "192.168.0.1" 2 21 20 0 \
        "DNS Primary" 3 1 "8.8.8.8" 3 21 20 0 \
        "DNS Secondary" 4 1 "8.8.4.4" 4 21 20 0 || return 1

    set -- $(cat $ANSWER)
    ip=$1; gw=$2; dns1=$3; dns2=$4
    echo "running: ip link set dev $dev up" >$LOG
    ip link set dev $dev up >$LOG 2>&1
    if [ $? -ne 0 ]; then
        DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} Failed to bring $dev interface." ${MSGBOXSIZE}
        return 1
    fi
    echo "running: ip addr add $ip dev $dev"
    ip addr add $ip dev $dev >$LOG 2>&1
    if [ $? -ne 0 ]; then
        DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} Failed to set ip to the $dev interface." ${MSGBOXSIZE}
        return 1
    fi
    ip route add $gw dev $dev >$LOG 2>&1
    if [ $? -ne 0 ]; then
        DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} failed to setup your gateway." ${MSGBOXSIZE}
        return 1
    fi
    echo "nameserver $dns1" >/etc/resolv.conf
    echo "nameserver $dns2" >>/etc/resolv.conf
    test_network
    if [ $? -eq 1 ]; then
        set_option NETWORK "${dev} static $ip $gw $dns1 $dns2"
    fi
}

menu_network() {
    local dev addr f DEVICES

    for f in $(ls /sys/class/net); do
        [ "$f" = "lo" ] && continue
        addr=$(cat /sys/class/net/$f/address)
        DEVICES="$DEVICES $f $addr"
    done
    DIALOG --title " Select the network interface to configure " \
        --menu "$MENULABEL" ${MENUSIZE} ${DEVICES}
    if [ $? -eq 0 ]; then
        dev=$(cat $ANSWER)
        if $(echo $dev|egrep -q "^wl.*" 2>/dev/null); then
            configure_wifi $dev
        else
            configure_net $dev
        fi
    fi
}

validate_filesystems() {
    local mnts dev size fstype mntpt mkfs rootfound fmt
    local usrfound efi_system_partition

    unset TARGETFS
    mnts=$(grep -E '^MOUNTPOINT.*' $CONF_FILE)
    set -- ${mnts}
    while [ $# -ne 0 ]; do
        dev=$2; fstype=$3; size=$4; mntpt="$5"; mkfs=$6
        shift 6

        if [ "$mntpt" = "/" ]; then
            rootfound=1
        elif [ "$mntpt" = "/usr" ]; then
            usrfound=1
        elif [ "$fstype" = "vfat" -a "$mntpt" = "/boot/efi" ]; then
            efi_system_partition=1
        fi
        if [ "$mkfs" -eq 1 ]; then
            fmt="NEW FILESYSTEM: "
        fi
        if [ -z "$TARGETFS" ]; then
            TARGETFS="${fmt}$dev ($size) mounted on $mntpt as ${fstype}\n"
        else
            TARGETFS="${TARGETFS}${fmt}${dev} ($size) mounted on $mntpt as ${fstype}\n"
        fi
    done
    if [ -z "$rootfound" ]; then
        DIALOG --msgbox "${BOLD}${RED}HATA:${RESET} \
kökdizin (/) için bağlama noktası ayarlı değil." ${MSGBOXSIZE}
        return 1
    elif [ -n "$usrfound" ]; then
        DIALOG --msgbox "${BOLD}${RED}HATA:${RESET} \
/usr bağlama noktası desteklenmiyor,siliniz." ${MSGBOXSIZE}
        return 1
    elif [ -n "$EFI_SYSTEM" -a -z "$efi_system_partition" ]; then
        DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} \
The EFI System Partition has not yet been configured, please create it\n
as FAT32, mountpoint /boot/efi and at least with 100MB of size." ${MSGBOXSIZE}
    fi
    FILESYSTEMS_DONE=1
}

create_filesystems() {
    local mnts dev mntpt fstype fspassno mkfs size rv uuid

    mnts=$(grep -E '^MOUNTPOINT.*' $CONF_FILE)
    set -- ${mnts}
    while [ $# -ne 0 ]; do
        dev=$2; fstype=$3; mntpt="$5"; mkfs=$6
        shift 6

        # swap partitions
        if [ "$fstype" = "swap" ]; then
            swapoff $dev >/dev/null 2>&1
            if [ "$mkfs" -eq 1 ]; then
                mkswap $dev >$LOG 2>&1
                if [ $? -ne 0 ]; then
                    DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} \
failed to create swap on ${dev}!\ncheck $LOG for errors." ${MSGBOXSIZE}
                    DIE 1
                fi
            fi
            swapon $dev >$LOG 2>&1
            if [ $? -ne 0 ]; then
                DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} \
failed to activate swap on $dev!\ncheck $LOG for errors." ${MSGBOXSIZE}
                DIE 1
            fi
            # Add entry for target fstab
            uuid=$(blkid -o value -s UUID "$dev")
            echo "UUID=$uuid none swap sw 0 0" >>$TARGET_FSTAB
            continue
        fi

        if [ "$mkfs" -eq 1 ]; then
            case "$fstype" in
            btrfs) MKFS="mkfs.btrfs -f"; modprobe btrfs >$LOG 2>&1;;
            ext2) MKFS="mke2fs -F"; modprobe ext2 >$LOG 2>&1;;
            ext3) MKFS="mke2fs -F -j"; modprobe ext3 >$LOG 2>&1;;
            ext4) MKFS="mke2fs -F -t ext4"; modprobe ext4 >$LOG 2>&1;;
            f2fs) MKFS="mkfs.f2fs"; modprobe f2fs >$LOG 2>&1;;
            vfat) MKFS="mkfs.vfat -F32"; modprobe vfat >$LOG 2>&1;;
            xfs) MKFS="mkfs.xfs -f"; modprobe xfs >$LOG 2>&1;;
            esac
            DIALOG --infobox "Creating filesystem $fstype on $dev for $mntpt ..." 8 60
            echo "Running $MKFS $dev..." >$LOG
            $MKFS $dev >$LOG 2>&1; rv=$?
            if [ $rv -ne 0 ]; then
                DIALOG --msgbox "${BOLD}${RED}HATA:${RESET} \
 $dev $fstype dosyasistemi oluşturma esnasında hata oluştu!\nayrıntı için $LOG dosyasına bakınız." ${MSGBOXSIZE}
                DIE 1
            fi
        fi
        # Mount rootfs the first one.
        [ "$mntpt" != "/" ] && continue
        mkdir -p $TARGETDIR
        echo " $dev noktası $mntpt a bağlanıyor($fstype)..." >$LOG
        mount -t $fstype $dev $TARGETDIR >$LOG 2>&1
        if [ $? -ne 0 ]; then
            DIALOG --msgbox "${BOLD}${RED}ERROR:${RESET} \
 $dev bağlanması ${mntpt} esnasında hata oluştu! ayrıntı için $LOG dosyasına bakınız." ${MSGBOXSIZE}
            DIE 1
        fi
        # Add entry to target fstab
        uuid=$(blkid -o value -s UUID "$dev")
        if [ "$fstype" = "f2fs" ]; then
            fspassno=0
        else
            fspassno=1
        fi
        echo "UUID=$uuid $mntpt $fstype defaults 0 $fspassno" >>$TARGET_FSTAB
    done

    # mount all filesystems in target rootfs
    mnts=$(grep -E '^MOUNTPOINT.*' $CONF_FILE)
    set -- ${mnts}
    while [ $# -ne 0 ]; do
        dev=$2; fstype=$3; mntpt="$5"
        shift 6
        [ "$mntpt" = "/" -o "$fstype" = "swap" ] && continue
        mkdir -p ${TARGETDIR}${mntpt}
        echo "Mounting $dev on $mntpt ($fstype)..." >$LOG
        mount -t $fstype $dev ${TARGETDIR}${mntpt} >$LOG 2>&1
        if [ $? -ne 0 ]; then
            DIALOG --msgbox "${BOLD}${RED}HATA:${RESET} \
failed to mount $dev on $mntpt! check $LOG for errors." ${MSGBOXSIZE}
            DIE
        fi
        # Add entry to target fstab
        uuid=$(blkid -o value -s UUID "$dev")
        echo "UUID=$uuid $mntpt $fstype defaults 0 2" >>$TARGET_FSTAB
    done
}

mount_filesystems() {
    for f in sys proc dev; do
        [ ! -d $TARGETDIR/$f ] && mkdir $TARGETDIR/$f
        echo "Mounting $TARGETDIR/$f..." >$LOG
        mount --bind /$f $TARGETDIR/$f >$LOG 2>&1
    done
}

umount_filesystems() {
    local f

    for f in sys/fs/fuse/connections sys proc dev; do
        echo "Unmounting $TARGETDIR/$f..." >$LOG
        umount $TARGETDIR/$f >$LOG 2>&1
    done
    local mnts="$(grep -E '^MOUNTPOINT.*$' $CONF_FILE)"
    set -- ${mnts}
    while [ $# -ne 0 ]; do
        local dev=$2; local fstype=$3; local mntpt=$5
        shift 6
        if [ "$fstype" = "swap" ]; then
            echo "Disabling swap space on $dev..." >$LOG
            swapoff $dev >$LOG 2>&1
            continue
        fi
        if [ "$mntpt" != "/" ]; then
            echo "Unmounting $TARGETDIR/$mntpt..." >$LOG
            umount $TARGETDIR/$mntpt >$LOG 2>&1
        fi
    done
    echo "Unmounting $TARGETDIR..." >$LOG
    umount $TARGETDIR >$LOG 2>&1
}

copy_rootfs() {
    DIALOG --title "Ayrıntı için $LOG a bakınız" \
        --infobox "Çalışan ortam hedef noktaya kopyalanıyor,lütfen bekleyiniz ..." 4 60
    LANG=C cp -axvnu / $TARGETDIR >$LOG 2>&1
    if [ $? -ne 0 ]; then
        DIE 1
    fi
}

install_packages() {
    local _grub= _syspkg=

    if [ -n "$EFI_SYSTEM" ]; then
        _grub="grub-x86_64-efi"
    else
        _grub="grub"
    fi

    _syspkg="base-system"

    #temel sistem paketleri kurulacak
}

enable_dhcpd() {
    #dhcp hedef kurulum noktasında ayarlanacak
}

menu_install() {
    # Don't continue if filesystems are not ready.
    validate_filesystems || return 1

	#şimdilik kapalı
    ROOTPASSWORD_DONE=1 #"$(get_option ROOTPASSWORD)"
    BOOTLOADER_DONE=1 #"$(get_option BOOTLOADER)"

    if [ -z "$FILESYSTEMS_DONE" ]; then
        DIALOG --msgbox "${BOLD}Gerekli dosya sistemi ayarlı değil, \
	gerekli ayarlamayı yaptıktan sonra kuruluma başlayınız.${RESET}" ${MSGBOXSIZE}
        return 1
    elif [ -z "$ROOTPASSWORD_DONE" ]; then
        DIALOG --msgbox "${BOLD}Root şifresi ayarlı değil, \
	gerekli ayarlamayı yaptıktan sonra kuruluma başlayınız.${RESET}" ${MSGBOXSIZE}
        return 1
    elif [ -z "$BOOTLOADER_DONE" ]; then
        DIALOG --msgbox "${BOLD}Bootloader için disk ayarlı değil, \
	gerekli ayarlamayı yaptıktan sonra kuruluma başlayınız.${RESET}" ${MSGBOXSIZE}
        return 1
    fi

    DIALOG --yesno "${BOLD}Şu işlemler uygulanacak:${RESET}\n\n
	${BOLD}${TARGETFS}${RESET}\n
	${BOLD}${RED}UYARI: YENİ DOSYA SİSTEMİ İÇİN HEDEF BÖLÜMDEKİ TÜM DATA SİLİNECEK.${RESET}\n\n
	${BOLD}Devam etmek istiyor musunuz?${RESET}" 20 80 || return
    unset TARGETFS

    # Create and mount filesystems
    create_filesystems
	copy_rootfs
    rm -r -f $TARGETDIR/tmp/*
	DIALOG --title "Ayrıntılar için $LOG kontrol ediniz." \
		--infobox "Hedef için başlatıcı ayarı yapılıyor ..." 4 60
	echo "Hedef için başlatıcı ayarı yapılıyor ..." >$LOG
	# mount required fs
	mount_filesystems
	chroot $TARGETDIR dracut --no-hostonly --add-drivers "ahci" --force >>$LOG 2>&1
        

    DIALOG --infobox "Kurulum ayarları uygulanıyor..." 4 60

    # copy target fstab.
    install -Dm644 $TARGET_FSTAB $TARGETDIR/etc/fstab
    # Mount /tmp as tmpfs.
    echo "tmpfs /tmp tmpfs defaults,nosuid,nodev 0 0" >> $TARGETDIR/etc/fstab


    # set up keymap, locale, timezone, hostname and root passwd.-simdilik kapali
    #set_keymap
    #set_locale
    #set_timezone
    #set_hostname
    #set_rootpassword
    #set_useraccount

    

    # install bootloader.-simdilik kapali
    #set_bootloader
    
    sync && sync && sync

    # unmount all filesystems.
    umount_filesystems

    # installed successfully.
    DIALOG --yesno "${BOLD}Milis İşletim Sistemi başarıyla kuruldu!${RESET}\n
	Bilgisayar yeniden başlatılsın mı?" ${YESNOSIZE}
    if [ $? -eq 0 ]; then
        shutdown -r now
    else
        return
    fi
}

menu_source() {
    local src=

    DIALOG --title " Select installation source " \
        --menu "$MENULABEL" 8 70 0 \
        "Local" "Packages from ISO image" \
        "Network" "Packages from official remote reposity"
    case "$(cat $ANSWER)" in
        "Local") src="local";;
        "Network") src="net";
            if [ -z "$NETWORK_DONE" ]; then
                menu_network;
            fi;;
        *) return 1;;
    esac
    SOURCE_DONE=1
    set_option SOURCE $src
}

menu() {
    if [ -z "$DEFITEM" ]; then
        DEFITEM="Keyboard"
    fi

    DIALOG --default-item $DEFITEM \
        --extra-button --extra-label "Ayarlar" \
        --title " Milis İşletim Sistemi kurulumu menüsü " \
        --menu "$MENULABEL" 10 70 0 \
        "Dosyasistemi" "Dosya sistemlerini ayarlama,gerekli bağlamalar" \
        "Kur" "Kayıt edilen ayarlarla kuruluma başlanması" \
        "Çıkış" "Kurulumdan çıkış"

    if [ $? -eq 3 ]; then
        # Show settings
        cp $CONF_FILE /tmp/conf_hidden.$$;
        sed -i "s/^ROOTPASSWORD.*/ROOTPASSWORD <-hidden->/" /tmp/conf_hidden.$$
        DIALOG --title "Kurulum için ayarlar kayıt edildi." --textbox /tmp/conf_hidden.$$ 14 60
        rm /tmp/conf_hidden.$$
        return
    fi

    case $(cat $ANSWER) in
        "Dosyasistemi") menu_filesystems && [ -n "$FILESYSTEMS_DONE" ] && DEFITEM="Kur";;
        "Kur") menu_install;;
        "Çıkış") DIE;;
        *) DIALOG --yesno "Kurulumu iptal et?" ${YESNOSIZE} && DIE
    esac
}

if [ ! -x /bin/dialog ]; then
    echo "ERROR: missing dialog command, exiting..."
    exit 1
fi
#
# main()
#
DIALOG --title "${BOLD}${RED} Milis İşletim Sistemi Hakkında ... ${RESET}" --msgbox "\n
Milis işletim sistemi kurulumuna hoşgeldiniz. Milis sıfırdan kaynak kodlardan 
oluşturulan yerli bağımsız bir işletim sistemidir.Kendine özgü mps isimli paket yöneticisine sahiptir.\
Mps ile hem derleme talimatları kullanılarak paket üretilebilir hem de direk ikili paketlerin kurulumu sağlanır.
irtibat için ${BOLD}#milisarge on irc.freenode.org${RESET}.\n\n
${BOLD}milisarge@gmail.com${RESET}\n\n" 16 80

while true; do
    menu
done

exit 0
# vim: set ts=4 sw=4 et: