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path: root/configs/profile/root-image/root/.session/install/install.sh
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#!/bin/bash

source $(cd $(dirname ${BASH_SOURCE[0]}) ; pwd)/../session-common.sh.inc


readonly PACCONF_NONSYSTEMD_REGEX='N ; s|^#\[nonsystemd\].*#Include|\[nonsystemd\]\nInclude|'
readonly PACCONF_SYSTEMD_REGEX='N ; s|^\[nonsystemd\].*Include|#\[nonsystemd\]\n#Include|'
readonly ONLINE_CHECK_URL=https://repo.parabola.nu/check_network_status.txt
readonly GRUB_THEME_SED_CMD='s|^#GRUB_THEME=.*|GRUB_THEME=/boot/grub/themes/parabola-laf/theme.txt|'


Init()
{
  echo "${TR[internet-${TR_KEY}]} ...."
  local has_isorepo=$( [[ ! -d /isorepo ]]                   && echo 1 || echo 0 )
  local is_online=$(   curl ${ONLINE_CHECK_URL} &> /dev/null && echo 1 || echo 0 )

  if   [[ ${has_isorepo} && ${is_online} ]] ; then SetStateVar 'INSTALL' 'prompt'  ;
  elif [[ ${has_isorepo}                 ]] ; then SetStateVar 'INSTALL' 'offline' ;
  else                                             SetStateVar 'INSTALL' 'online'  ;
  fi

DbgDlg "has_isorepo=$has_isorepo is_online=$is_online install=$install"
}

InitKeyring()
{
  if   [[ "$(GetStateVar 'KEYRING')" != 'ready' ]]
  then pacman -Sy archlinux-keyring archlinux32-keyring parabola-keyring --noconfirm
       pacman-key --populate archlinux archlinux32 parabola
       pacman-key --refresh-keys
       SetStateVar 'KEYRING' 'ready'
  fi
}

Partition()
{
  umount /mnt &> /dev/null || true

  # prompt for disk device
  local hd_devices=$(ls /dev/sd?)
  local hdds=()
  local hd_device
  local capacity
  local hdd
  for hd_device in ${hd_devices}
  do  capacity=$(fdisk --list /dev/sda | head --lines=1 | sed 's|.*: \([^,]*\),.*|\1|')
      hdds+=( "${hd_device}" "${capacity}" off )
  done
  hdd=$( WizardDlg "${TR[dlg_part-${TR_KEY}]}"                              \
                   --radiolist "${TR[hdd-${TR_KEY}]}" 20 70 50 "${hdds[@]}" )
  [[ -n "${hdd}" ]] && SetStateVar 'HDD' ${hdd} || exit

  # prompt for partitioner
  local part_method=$( WizardDlg "${TR[dlg_part-${TR_KEY}]}"               \
                                 --menu   "${TR[part-${TR_KEY}]}" 20 70 50 \
                                 'auto'   "${TR[part_auto-${TR_KEY}]}"     \
                                 'manual' "${TR[part_man-${TR_KEY}]}"      )
  [[ -n "${part_method}" ]] || exit

  # partitioning
  local root_part
  case ${part_method} in
  'auto')
    # create partition table
    parted -s ${device} -- mklabel msdos

    # create partitions
    parted -s ${hdd} -- mkpart primary 1MiB    1000MiB
    parted -s ${hdd} -- mkpart primary 1000MiB -1s
    parted -s ${hdd} -- set 2 boot on

    # format partitions
    (echo t ; echo 1 ; echo 82 ; echo w) | fdisk ${hdd}
    mkswap    ${hdd}1
    mkfs.ext4 ${hdd}2

    root_part=${hdd}2
    ;;
  'manual')
    if   which gparted &> /dev/null ; then gparted ${hdd} ;
    elif which cfdisk  &> /dev/null ; then cfdisk  ${hdd} ; fi ;

    # prompt for root partition
    local partitions=()
    local partition
    for partition in $(ls ${hdd}?)
    do  capacity=$(df --human-readable --output=size ${partition} | tail --lines=1 | tr -d ' ')
        partitions+=( "${partition}" "${capacity}" off )
    done
    root_part=$( WizardDlg "${TR[dlg_part-${TR_KEY}]}"                        \
                           --radiolist "${TR[mount_root-${TR_KEY}]}" 20 70 50 \
                           ${partitions[@]}                                   )
    [[ -n "${root_part}" ]] || exit

    # prompt to mount additional partitions
    local other=0
    local boot_part
    local home_part
    while [[ "${other}" != 3 ]]
    do    other=$( WizardDlg "${TR[dlg_part-${TR_KEY}]}" --cancel-label "None" \
                             --menu "${TR[mount_other-${TR_KEY}]}" 20 70 50    \
                             1 "/boot" 2 "/home" 3 "Done"                      )
          case $other in
          1) boot_part=$( WizardDlg "${TR[dlg_part-${TR_KEY}]}"                        \
                                    --radiolist "${TR[mount_boot-${TR_KEY}]}" 20 70 50 \
                                    ${partitions[@]}                                   )
            umount /mnt/boot &> /dev/null || true
            mkdir  /mnt/boot &> /dev/null || true
            ;;
          2) home_part=$( WizardDlg "${TR[dlg_part-${TR_KEY}]}"                        \
                                    --radiolist "${TR[mount_home-${TR_KEY}]}" 20 70 50 \
                                    ${partitions[@]}                                   )
            umount /mnt/home &> /dev/null || true
            mkdir  /mnt/home &> /dev/null || true
            ;;
          *) other=3
            ;;
          esac
    done
    ;;
  *) exit ;;
  esac

  # format unformatted partitions and mount partitions
  for partition in ${root_part} ${boot_part} ${home_part}
  do  ! blkid ${partition} | grep ' TYPE="' &> /dev/null             && \
      WizardDlg "${TR[dlg_part-${TR_KEY}]}"                             \
                --yesno "${partition} ${TR[format-${TR_KEY}]}" 20 70 && \
      mkfs.ext4 ${partition}
      blkid ${partition} | grep ' TYPE="' > /dev/null || exit
  done
  mount ${root_part} /mnt
  mount ${boot_part} /mnt/boot || [[ -z "${boot_part}" ]]
  mount ${home_part} /mnt/home || [[ -z "${home_part}" ]]
}

NoticeCustomize() { WizardDlg "" --msgbox "${TR[notice_customize-${TR_KEY}]}" 20 70 ; }

SelectDefaults()
{
  if   WizardDlg "${TR[dlg_defaults-${TR_KEY}]}" --yesno "${TR[defaults-${TR_KEY}]}" 20 70
  then SetStateVar 'BASE' 'base parabola-base'
       SetStateVar 'INIT' 'openrc'
  fi
}

SelectBase()
{
  if [[ -n "$(SetStateVar 'BASE')" && -n "$(GetStateVar 'INIT')" ]] ; then return 0 ; fi ;

  # prompt for base package set
  local base=$( WizardDlg "${TR[dlg_base-${TR_KEY}]}"                  \
                          --radiolist "${TR[base-${TR_KEY}]}" 20 70 50 \
                          'core'  "${TR[base_mini-${TR_KEY}]}"  'off'  \
                          'posix' "${TR[base_posix-${TR_KEY}]}" 'on'   )
  local base_packages=( 'base' $( [[ "${base}" == 'posix' ]] && echo 'parabola-base' || : ) )
  [[ -n "${base}" ]] && SetStateVar 'BASE' ${base_packages} || exit

  # prompt for init-system
  local init=$( WizardDlg "${TR[dlg_base-${TR_KEY}]}"                     \
                          --radiolist "${TR[init-${TR_KEY}]}" 20 70 50    \
                          'openrc'  "${TR[init_openrc-${TR_KEY}]}"  'off' \
                          'systemd' "${TR[init_systemd-${TR_KEY}]}" 'on'  )
  [[ -n "${init}" ]] && SetStateVar 'INIT' ${init} || exit

  # prompt for local vs remote package repos if possible
  local install=$(GetStateVar 'INSTALL')
  local install=$(  [[ "${install}" == 'prompt' ]]                            && \
                    WizardDlg "${TR[dlg_base-${TR_KEY}]}"                        \
                              --radiolist "${TR[install-${TR_KEY}]}" 20 70 50    \
                              'offline' "${TR[install_offline-${TR_KEY}]}" 'on'  \
                              'online'  "${TR[install_online-${TR_KEY}]}"  'off' )
  [[ -n "${install}" ]] && SetStateVar 'INSTALL' ${install} || exit
}

InstallBase()
{
  local conf_regex=$( [[ "${init}" == 'openrc'  ]] && echo "$PACCONF_NONSYSTEMD_REGEX" || \
                                                      echo "$PACCONF_SYSTEMD_REGEX"       )
  local install=$(GetStateVar 'INSTALL')
  local base_packages=$(GetStateVar 'BASE')

  sed -i "$conf_regex" /etc/pacman-${install}.conf
  cp /etc/pacman-${install}.conf /etc/pacman.conf

  # install standard packages
  pacstrap /mnt base ${base_packages[@]}
}

ConfigChroot()
{
  genfstab -p /mnt             >> /mnt/etc/fstab
  cp "${SESSION_STATE_FILE}"      /mnt/root/
  cp "${SESSION_INCLUDE_FILE}"    /mnt/root/
  cp "${CHROOT_ENVIRONMENT_FILE}" /mnt/root/
  chmod +x                        /mnt/root/${CHROOT_ENVIRONMENT_FILENAME}
  arch-chroot /mnt                    /root/${CHROOT_ENVIRONMENT_FILENAME}
  rm                              /mnt/root/${CHROOT_ENVIRONMENT_FILENAME}
}

NoticeOptional() { WizardDlg "" --msgbox "${TR[notice_optional-${TR_KEY}]}" 20 70 ; }

InstallGrub()
{
  # prompt to install GRUB
  local grub=$( WizardDlg "${TR[dlg_grub-${TR_KEY}]}"                  \
                          --radiolist "${TR[grub-${TR_KEY}]}" 20 70 50 \
                          'yes' "${TR[yes-${TR_KEY}]}" 'on'            \
                          'no'  "${TR[no-${TR_KEY}]}"  'off'           )
  [[ -n "${grub}"       ]] || exit
  [[ "${grub}" == 'yes' ]] || return

  pacstrap /mnt grub grub2-theme-gnuaxiom

  # enable Parabola theme for grub
  sed -i "$GRUB_THEME_SED_CMD" /mnt/etc/default/grub
}

InstallWmDe()
{
  # prompt to install a graphical environment
  local desktop=$( WizardDlg "${TR[dlg_wmde-${TR_KEY}]}"                 \
                             --radiolist "${TR[gui-${TR_KEY}]}" 20 70 50 \
                             'yes' "${TR[yes-${TR_KEY}]}" 'on'           \
                             'no'  "${TR[no-${TR_KEY}]}"  'off'          )

  # prompt for WM/DE
  local wmde=$( [[ "${desktop}" == 'no' ]] && echo 'cli'            || \
                WizardDlg "${TR[dlg_wmde-${TR_KEY}]}"                  \
                          --radiolist "${TR[wmde-${TR_KEY}]}" 20 70 50 \
                          'cli'  "${TR[wmde_cli-${TR_KEY}]}"  'off'    \
                          'lxde' "${TR[wmde_lxde-${TR_KEY}]}" 'on'     \
                          'mate' "${TR[wmde_mate-${TR_KEY}]}" 'off'    )
  [[ -n "${wmde}" ]] && SetStateVar 'WMDE' ${wmde} || exit

  # install graphical packages
  [[ "${wmde}" != 'cli' ]] && pacstrap /mnt parabola-desktop-${wmde} # TODO: parabola-desktop NYI

  # enable services
  cp "${CHROOT_SERVICES_FILE}" /mnt/root/
  chmod +x                     /mnt/root/${CHROOT_SERVICES_FILENAME}
  arch-chroot /mnt                 /root/${CHROOT_SERVICES_FILENAME}
  rm                           /mnt/root/${CHROOT_SERVICES_FILENAME}
}

CreateUser()
{
  # prompt to create an unprivileged user login
  local user=$( WizardDlg "${TR[dlg_user-${TR_KEY}]}"                  \
                          --radiolist "${TR[user-${TR_KEY}]}" 20 70 50 \
                          'yes' "${TR[yes-${TR_KEY}]}" 'on'            \
                          'no'  "${TR[no-${TR_KEY}]}"  'off'           )
  [[ -n "${user}"       ]] || exit
  [[ "${user}" == 'yes' ]] || return

  # create unprivileged user login
  cp "${CHROOT_LOGIN_FILE}" /mnt/root/
  chmod +x                  /mnt/root/${CHROOT_LOGIN_FILENAME}
  arch-chroot /mnt              /root/${CHROOT_LOGIN_FILENAME}
  rm                        /mnt/root/${CHROOT_LOGIN_FILENAME}
}

Cleanup()
{
  # clean-up
  arch-chroot /mnt pacman -R dialog --noconfirm        &> /dev/null || true
  rm          /mnt/root/${SESSION_STATE_FILENAME}      &> /dev/null || true
  rm          /mnt/root/${SESSION_INCLUDE_FILENAME}    &> /dev/null || true
  rm          /mnt/root/${CHROOT_ENVIRONMENT_FILENAME} &> /dev/null || true
  rm          /mnt/root/${CHROOT_LOGIN_FILENAME}       &> /dev/null || true
  rm          /mnt/root/${CHROOT_SERVICES_FILENAME}    &> /dev/null || true
  umount      /mnt/boot                                &> /dev/null || true
  umount      /mnt/home                                &> /dev/null || true
  umount      /mnt                                     &> /dev/null || true
}


## main entry ##

set -o errexit -o errtrace
trap 'trap - ERR           ; clear ; LogError() { : ; } ; Cleanup ;'        EXIT INT TERM
trap 'trap - EXIT INT TERM ; clear ; LogError "${FUNCNAME[0]}" ${LINENO} ;' ERR

Init            # Check for isorepo existence and internet connection
InitKeyring     # Initialize the pacman keyring
Partition       # Partition and mount target disks
NoticeCustomize # Explain that the next choices are mandatory but interchangeable
SelectDefaults  # Choose to install the standard system, or to customize
SelectBase      # Select base system
InstallBase     # Install base system
ConfigChroot    # Generate fstab and configure system in-chroot (non-interactive)
NoticeOptional  # Explain that the next choices are optional
InstallGrub     # Install grub
InstallWmDe     # Install GUI packages and configure services in-chroot
CreateUser      # Create unpriviledged login user in-chroot
Cleanup         # Remove helper scripts from the chroot and un-mount target disks

exit