meta:
  id: filesdb
  file-extension: db
  endian: le
  encoding: UTF-8
instances:
  page_size:
    pos: 0x10
    type: u4
  file_headers_size:
    value: 9 * file_header_size
  file_header_size:
    value: 72
  file_infos_size:
    value: 10 * file_info_size
  file_info_size:
    value: 16
seq:
  - id: header
    type: header
    size: page_size
  - id: pages
    type: pages
    size: header.total_pages_size
types:
  header:
    seq:
      - id: magic
        contents: SCENGPFS
      - id: version
        type: u4
      - id: image_spec
        type: u2
      - id: key_id
        type: u2
      - id: page_size
        type: u4
      - id: bt_order
        type: u4
      - id: root_icv_page_number
        type: u4
      - id: files_salt
        type: u4
      - id: unk
        size: 8
      - id: total_pages_size
        type: u8
      - id: total_size
        type: u8
      - id: root_icv
        type: sha1_digest
      - id: header_icv
        type: sha1_digest
      - id: rsa_sig0
        type: rsa_signature
      - id: rsa_sig1
        type: rsa_signature
  pages:
    seq:
      - id: page
        type: page
        size: _root.page_size
        repeat: eos
  page:
    seq:
      - id: parent_page_number
        type: u4
      - id: page_type
        type: u4
      - id: num_files
        type: u4
      - id: reserved
        contents: [0,0,0,0]
      - id: file_headers
        type: file_headers
        size: _root.file_headers_size
      - id: file_infos
        type: file_infos
        size: _root.file_infos_size
      - id: hashes
        type: sha1_digest
        repeat: expr
        repeat-expr: 10
  file_headers:
    seq:
      - id: file_header
        type: file_header
        size: _root.file_header_size
        repeat: expr
        repeat-expr: 9
  file_header:
    seq:
      - id: parent_index
        type: u4
      - id: file_name
        type: strz
  file_infos:
    seq:
      - id: file_info
        type: file_info
        size: _root.file_info_size
        repeat: expr
        repeat-expr: 10
  file_info:
    seq:
      - id: index
        type: u4
      - id: file_type
        type: u2
      - id: reserved
        contents: [0,0]
      - id: file_size
        type: u4
  sha1_digest:
    seq:
      - id: digest
        size: 0x14
  rsa_signature:
    seq:
      - id: signature
        size: 0x100