legendary/doc/ue_manifest.ksy

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meta:
id: ue_manifest
title: Binary Unreal Engine Manifest Version 20
application: Epic Games Launcher
file-extension: manifest
license: 0BSD
endian: le
seq:
- id: header
type: header
- id: body_compressed
size: header.size_compressed
type: body
process: zlib
if: header.is_compressed
- id: body_uncompressed
size: header.size_uncompressed
type: body
if: not header.is_compressed
- id: unknown
size-eos: true
types:
header:
seq:
- id: magic
contents: [0x0C, 0xC0, 0xBE, 0x44]
- id: header_size
type: u4
- id: size_uncompressed
type: u4
- id: size_compressed
type: u4
- id: sha1_hash
size: 20
- id: stored_as
type: u1
enum: stored_as_flag
- id: version
type: u4
- id: unknown
size: header_size - 41
instances:
is_compressed:
value: stored_as.to_i & 1 == 1
body:
seq:
- id: meta_size
type: u4
- id: metadata
size: meta_size - 4
type: metadata
- id: cdl_size
type: u4
- id: chunk_data_list
type: chunk_data_list
size: cdl_size - 4
- id: fml_size
type: u4
- id: file_manifest_list
type: file_manifest_list
size: fml_size - 4
- id: custom_data_size
type: u4
- id: custom_fields
type: custom_fields
size: custom_data_size - 4
- id: unknown
size-eos: true
metadata:
seq:
- id: data_version
type: u1
- id: feature_level
type: u4
- id: is_file_data
type: u1
- id: app_id
type: u4
- id: app_name
type: fstring
- id: build_version
type: fstring
- id: launch_exe
type: fstring
- id: launch_command
type: fstring
- id: prereq_ids_num
type: u4
- id: prereq_ids
type: fstring
repeat: expr
repeat-expr: prereq_ids_num
- id: prereq_name
type: fstring
- id: prereq_path
type: fstring
- id: prereq_args
type: fstring
- id: build_id
type: fstring
if: data_version > 0
- id: unknown
size-eos: true
chunk_data_list:
seq:
- id: version
type: u1
- id: count
type: u4
- id: guids
size: 16
repeat: expr
repeat-expr: count
- id: ue_hashes
type: u8
repeat: expr
repeat-expr: count
- id: sha_hashes
size: 20
repeat: expr
repeat-expr: count
- id: group_nums
type: u1
repeat: expr
repeat-expr: count
- id: window_sizes
type: u4
repeat: expr
repeat-expr: count
- id: file_sizes
type: s8
repeat: expr
repeat-expr: count
- id: unknown
size-eos: true
file_manifest_list:
seq:
- id: version
type: u1
- id: count
type: u4
- id: filenames
type: fstring
repeat: expr
repeat-expr: count
- id: symlink_targets
type: fstring
repeat: expr
repeat-expr: count
- id: sha_hashes
size: 20
repeat: expr
repeat-expr: count
- id: flags
type: u1
enum: file_flags
repeat: expr
repeat-expr: count
- id: tags
type: tags
repeat: expr
repeat-expr: count
- id: chunk_parts
type: chunk_parts
repeat: expr
repeat-expr: count
- id: md5_hashes
if: version > 0
type: md5_hash
repeat: expr
repeat-expr: count
- id: mime_types
if: version > 0
type: fstring
repeat: expr
repeat-expr: count
- id: sha256_hashes
if: version > 1
size: 32
repeat: expr
repeat-expr: count
- id: unknown
size-eos: true
custom_fields:
seq:
- id: version
type: u1
- id: count
type: u4
- id: keys
type: fstring
repeat: expr
repeat-expr: count
- id: values
type: fstring
repeat: expr
repeat-expr: count
- id: unknown
size-eos: true
fstring:
seq:
- id: length
type: s4
- id: value_ascii
size: length
type: str
encoding: 'ASCII'
if: length >= 0
- id: value_utf16
size: -2 * length
type: str
encoding: 'UTF-16LE'
if: length < 0
instances:
value:
value: 'length >= 0 ? value_ascii : value_utf16'
if: length >= 0 or length < 0
tags:
seq:
- id: count
type: u4
- id: tag
type: fstring
repeat: expr
repeat-expr: count
chunk_parts:
seq:
- id: count
type: u4
- id: elements
type: chunk_part
repeat: expr
repeat-expr: count
chunk_part:
seq:
- id: entry_size
type: u4
- id: guid
size: 16
- id: offset
type: u4
- id: size
type: u4
- id: unknown
size: entry_size - 28
md5_hash:
seq:
- id: has_md5
type: u4
- id: md5
size: 16
if: has_md5 != 0
instances:
body:
value: 'header.is_compressed ? body_compressed : body_uncompressed'
enums:
stored_as_flag:
0x0: uncompressed
0x1: compressed
file_flags:
0x0: none
0x1: read_only
0x2: compressed
0x4: unix_executable