qnap_extractor() {

  local DECRYPTED_FW_="${1:-}"

  if ! [[ -f "$DECRYPTED_FW_" ]]; then

    return

  fi

  sub_module_title "QNAP firmware extraction"

  print_output "[!] WARNING: This module is in an very early alpha state."

  print_output "[!] WARNING: Some areas of this module are not tested."

  QNAP_EXTRACTION_ROOT="$LOG_DIR"/firmware/qnap_extraction

  QNAP_EXTRACTION_ROOT_DST="$QNAP_EXTRACTION_ROOT"/root_filesystem

  mkdir -p "$QNAP_EXTRACTION_ROOT_DST" || true

  if file "$DECRYPTED_FW_" | grep -q ": gzip" ; then

    print_output "[*] Extracting $ORANGE$DECRYPTED_FW_$NC into $ORANGE$QNAP_EXTRACTION_ROOT$NC."

    mkdir -p "$QNAP_EXTRACTION_ROOT" || true

    tar xvf "$DECRYPTED_FW_" -C "$QNAP_EXTRACTION_ROOT" 2>/dev/null || true | tee -a "$LOG_FILE"

    print_ln

    print_output "[*] Extracted firmware structure ($ORANGE$QNAP_EXTRACTION_ROOT$NC):"

        find "$QNAP_EXTRACTION_ROOT" -xdev -ls | tee -a "$LOG_FILE"

    print_files_dirs

    print_bar ""

  else

    print_output "[-] No QNAP firmware file found"

    return 1

  fi

  UIMAGE="$QNAP_EXTRACTION_ROOT/uImage"              

  UBI="$QNAP_EXTRACTION_ROOT/rootfs2.ubi"            

  IMAGE="$QNAP_EXTRACTION_ROOT_DST/image"

  INITRAMFS="$QNAP_EXTRACTION_ROOT_DST/initramfs"       

  INITRD="$QNAP_EXTRACTION_ROOT/initrd.boot"         

  if [ ! -e "$INITRD" ]; then

    INITRD="$QNAP_EXTRACTION_ROOT/initrd"            

  fi

  ROOTFS2="$QNAP_EXTRACTION_ROOT/rootfs2.tgz"

  ROOTFS2_BZ="$QNAP_EXTRACTION_ROOT/rootfs2.bz"

  ROOTFS2_IMG="$QNAP_EXTRACTION_ROOT/rootfs2.img"

  ROOTFS_EXT="$QNAP_EXTRACTION_ROOT/rootfs_ext.tgz"

  QPKG="$QNAP_EXTRACTION_ROOT/qpkg.tar"

  if [ -e "$UBI" ]; then

    ROOTFS2="$QNAP_EXTRACTION_ROOT_DST/rootfs2.tgz"

    ROOTFS_EXT="$QNAP_EXTRACTION_ROOT_DST/rootfs_ext.tgz"

    QPKG="$QNAP_EXTRACTION_ROOT_DST/qpkg.tar"

  fi

  SYSROOT="$QNAP_EXTRACTION_ROOT_DST/sysroot"

  mkdir "$SYSROOT"

  if [ -e "$UIMAGE" ]; then

    print_ln

    print_output "[*] Scanning $ORANGE$UIMAGE$NC for (gzipped) parts..."

    a=$(od -t x1 -w4 -Ad -v "$UIMAGE" | grep '1f 8b 08 00' | awk '{print $1}')

    if [ -n "$a" ]; then

      dd if="$UIMAGE" bs="$a" skip=1 of="$IMAGE.gz" status=none

      gunzip --quiet "$IMAGE.gz" || [ $? -eq 2 ]

      print_output "[+] Extracted and uncompressed $ORANGE$IMAGE$NC at offset $ORANGE$a$NC"

      i=0

      for a in $(od -t x1 -w4 -Ad -v "$IMAGE" | grep '1f 8b 08 00' | awk '{print $1}'); do

        i=$((i+1))

        dd if="$IMAGE" bs="$a" skip=1 of="$IMAGE.part$i.gz" status=none

        gunzip --quiet "$IMAGE.part$i.gz" || [ $? -eq 2 ]

        print_output "[+] Extracted and uncompressed '$IMAGE.part$i' at offset $a"

      done

      if [ $i -gt 0 ]; then

        mv "$IMAGE.part$i" "$INITRAMFS" || true

        print_output "[*] Renamed $ORANGE$IMAGE.part$i$NC to $ORANGE$INITRAMFS$NC"

        rm "$IMAGE" || true

      fi

    fi

    print_files_dirs

    print_bar ""

  fi

  if [ -e "$UBI" ]; then

    print_ln

    print_output "[*] Unpacking $ORANGE$UBI$NC."

    modprobe -r nandsim || true

    if [ -e /dev/mtdblock0 ]; then

      print_output "[-] /dev/mtdblock0 does already exist! Exiting to not overwrite it."; exit

    fi

    modprobe nandsim first_id_byte=0x2c second_id_byte=0xda third_id_byte=0x90 fourth_id_byte=0x95

    print_output "[*] Copy UBI image into simulated flash device"

    modprobe mtdblock

    dd if="$UBI" of=/dev/mtdblock0 bs=2048 status=none

    print_output "[*] Attach simulated flash device"

    modprobe ubi

    ubiattach /dev/ubi_ctrl -m0 -O2048

    print_output "[*] Mounting ubifs file system"

    modprobe ubifs

    local TMP_EXT_MOUNT="$TMP_DIR""/ext_mount_$RANDOM"

    mkdir -p "$TMP_EXT_MOUNT" || true

    mount -t ubifs ubi0 "$TMP_EXT_MOUNT"

    if mount | grep -q ext_mount; then

      print_output "[*] Copying contents from UBI mount"

      cp -a "$TMP_EXT_MOUNT"/boot/* "$QNAP_EXTRACTION_ROOT_DST" || true

      print_ln

      print_output "[*] Extracted firmware structure ($ORANGE$QNAP_EXTRACTION_ROOT_DST$NC):"

      find "$QNAP_EXTRACTION_ROOT_DST" -xdev -ls | tee -a "$LOG_FILE"

      print_output "[*] UBI cleanup"

      umount "$TMP_EXT_MOUNT"

    else

      print_output "[-] Something went wrong!"

    fi

    rm -r "$TMP_EXT_MOUNT" || true

    ubidetach /dev/ubi_ctrl -m0

    modprobe -r nandsim

    print_files_dirs

    print_bar ""

  fi

  if [ -e "$INITRAMFS" ]; then

    print_ln

    print_output "[*] Extracting $ORANGE$INITRAMFS$NC."

    (cd "$SYSROOT" && (cpio -i --make-directories||true) ) < "$INITRAMFS"

    print_ln

    print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

    find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

    print_files_dirs

    print_bar ""

  fi

  if [ -e "$INITRD" ]; then

    print_ln

    if file "$INITRD" | grep -q LZMA ; then

      print_output "[*] Extracting $ORANGE$INITRD$NC (LZMA)."

      lzma -d <"$INITRD" | (cd "$SYSROOT" && (cpio -i --make-directories||true) )

      print_ln

      print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

      find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

      print_files_dirs

      print_bar ""

    fi

    if file "$INITRD" | grep -q gzip ; then

      print_ln

      print_output "[*] Extracting $ORANGE$INITRD$NC (gzip)."

      gzip -d <"$INITRD" >"$QNAP_EXTRACTION_ROOT_DST/initrd.$$"

      print_output "[*] Mounting $ORANGE$INITRD$NC."

      local TMP_EXT_MOUNT="$TMP_DIR""/ext_mount_$RANDOM"

      mkdir -p "$TMP_EXT_MOUNT" || true

      mount -t ext2 "$QNAP_EXTRACTION_ROOT_DST/initrd.$$" "$TMP_EXT_MOUNT" -oro,loop

      if mount | grep -q ext_mount; then

        cp -a "$TMP_EXT_MOUNT"/* "$SYSROOT" || true

        umount "$TMP_EXT_MOUNT"

        print_ln

        print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

        find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

        rm "$QNAP_EXTRACTION_ROOT_DST/initrd.$$" || true

      else

        print_output "[-] Something went wrong!"

      fi

      rm -r "$TMP_EXT_MOUNT" || true

      print_files_dirs

      print_bar ""

    fi

  fi

  if [ -e "$ROOTFS2" ]; then

    print_ln

    print_output "[*] Extracting $ORANGE$ROOTFS2$NC (gzip, tar)."

    tar -xvzf "$ROOTFS2" -C "$SYSROOT"

    print_ln

    print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

    find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

    print_files_dirs

    print_bar ""

  fi

  if [ -e "$ROOTFS2_BZ" ]; then

    print_ln

    if file "$ROOTFS2_BZ" | grep -q "LZMA"; then

      print_output "[*] Extracting $ORANGE$ROOTFS2_BZ$NC (LZMA)."

      lzma -d <"$ROOTFS2_BZ" | (cd "$SYSROOT" && (cpio -i --make-directories||true) )

    else

      print_output "[*] Extracting $ORANGE$ROOTFS2_BZ$NC (bzip2, tar)."

      tar -xvjf "$ROOTFS2_BZ" -C "$SYSROOT"

    fi

    print_ln

    print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

    find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

    print_files_dirs

    print_bar ""

  fi

  if [ -f "$ROOTFS2_IMG" ]; then

    print_ln

    print_output "[*] Extracting $ORANGE$ROOTFS2_IMG$NC (ext2)..."

    local TMP_EXT_MOUNT="$TMP_DIR""/ext_mount_$RANDOM"

    mkdir -p "$TMP_EXT_MOUNT" || true

    mount -t ext2 "$ROOTFS2_IMG" "$TMP_EXT_MOUNT" -oro,loop

    if mount | grep -q ext_mount; then

      tar -xvjf "$TMP_EXT_MOUNT"/rootfs2.bz -C "$SYSROOT"

      print_ln

      print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

      find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

      umount "$TMP_EXT_MOUNT"

    else

      print_output "[-] Something went wrong!"

    fi

    rm -r "$TMP_EXT_MOUNT" || true

    print_files_dirs

    print_bar ""

  fi

  if [ -e "$ROOTFS_EXT" ]; then

    print_ln

    print_output "[*] Extracting EXT filesystem $ORANGE$ROOTFS_EXT$NC."

    tar xzvf "$ROOTFS_EXT" -C "$QNAP_EXTRACTION_ROOT_DST"

    print_output "[*] Mounting EXT filesystem $ORANGE$ROOTFS_EXT$NC."

    local TMP_EXT_MOUNT="$TMP_DIR""/ext_mount_$RANDOM"

    mkdir -p "$TMP_EXT_MOUNT" || true

    mount "$QNAP_EXTRACTION_ROOT_DST"/rootfs_ext.img "$TMP_EXT_MOUNT" -oro,loop

    if mount | grep -q ext_mount; then

      cp -a "$TMP_EXT_MOUNT"/* "$SYSROOT" || true

      umount "$TMP_EXT_MOUNT"

    fi

    print_output "[*] Removing EXT filesystem ${ORANGE}rootfs_ext.img$NC."

    rm "$QNAP_EXTRACTION_ROOT_DST"/rootfs_ext.img || true

    rm -r "$TMP_EXT_MOUNT" || true

    print_ln

    print_output "[*] Extracted firmware structure ($ORANGE$SYSROOT$NC):"

    find "$SYSROOT" -xdev -ls | tee -a "$LOG_FILE"

    print_files_dirs

    print_bar ""

  fi

  USR_LOCAL=$(find "$SYSROOT/opt/source" -name "*.tgz" 2>/dev/null)

  if [[ -v USR_LOCAL[@] ]]; then

    print_ln

    for f in "${USR_LOCAL[@]}"; do

      print_output "[*] Extracting $ORANGE$f$NC -> ${ORANGE}sysroot/usr/local$NC ..."

      mkdir -p "$SYSROOT/usr/local" || true

      tar xvzf "$f" -C "$SYSROOT/usr/local"

    done

    print_files_dirs

    print_bar ""

  fi

  if [ -e "$QPKG" ]; then

    print_ln

    print_output "[*] Extracting $ORANGE$QPKG$NC."

    mkdir -p "$QNAP_EXTRACTION_ROOT_DST/qpkg" || true

    tar xvf "$QPKG" -C "$QNAP_EXTRACTION_ROOT_DST/qpkg"

    for f in "$QNAP_EXTRACTION_ROOT_DST"/qpkg/*.tgz; do

      if file "$f" | grep -q gzip; then

        print_output "[*] Extracting QPKG $ORANGE$f$NC."

        tar tvzf "$f" > "$f".txt

      fi

    done

    print_files_dirs

    print_bar ""

  fi

  for name in apache_php5 mysql5 mariadb5; do

    if [ -e "$QNAP_EXTRACTION_ROOT_DST/qpkg/$name.tgz" ]; then

      print_output "[*] Extracting ${ORANGE}qpkg/$name.tgz$NC -> ${ORANGE}sysroot/usr/local$NC ..."

      tar xvzf "$QNAP_EXTRACTION_ROOT_DST/qpkg/$name.tgz" -C "$SYSROOT/usr/local"

    fi

  done

  if [ -e "$QNAP_EXTRACTION_ROOT_DST"/qpkg/libboost.tgz ]; then

    print_ln

    print_output "[*] Extracting ${ORANGE}qpkg/libboost.tgz$NC -> ${ORANGE}sysroot/usr/lib$NC."

    mkdir -p "$SYSROOT/usr/lib" || true

    tar xvzf "$QNAP_EXTRACTION_ROOT_DST"/qpkg/libboost.tgz -C "$SYSROOT/usr/lib"

  elif [ -e "$QNAP_EXTRACTION_ROOT_DST"/qpkg/DSv3.tgz ]; then

    print_output "[*] Extracting ${ORANGE}libboost$NC from ${ORANGE}qpkg/DSv3.tgz$NC -> ${ORANGE}sysroot/usr/lib$NC."

    tar tzf "$QNAP_EXTRACTION_ROOT_DST"/qpkg/DSv3.tgz |grep libboost | tar xzf "$QNAP_EXTRACTION_ROOT_DST"/qpkg/DSv3.tgz -C "$SYSROOT" -T -

  fi

  if [[ -d "$SYSROOT"/usr/lib ]]; then

    HOME_DIR="$(pwd)"

    (cd "$SYSROOT/usr/lib" || exit; for f in libboost*.so.1.42.0; do ln -s "$f" "${f%.1.42.0}"; done)

    cd "$HOME_DIR" || exit

  fi

  print_files_dirs

  print_bar ""

}