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Add support for patching encrypted mixes

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Cyberarm
2025-05-16 09:39:05 -05:00
parent 3485d5b61a
commit 1e0adc398c
2 changed files with 21 additions and 5 deletions
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2
lib/application_manager/task.rb
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@@ -738,7 +738,7 @@ class W3DHub
end end
logger.info(LOG_TAG) { " Writing updated #{path}/#{safe_file_name}..." } if patch_info[:updatedFiles].size.positive? logger.info(LOG_TAG) { " Writing updated #{path}/#{safe_file_name}..." } if patch_info[:updatedFiles].size.positive?
W3DHub::Mixer::Writer.new(file_path: "#{path}/#{safe_file_name}", package: target_mix.package, memory_buffer: true) W3DHub::Mixer::Writer.new(file_path: "#{path}/#{safe_file_name}", package: target_mix.package, memory_buffer: true, encrypted: target_mix.encrypted?)
FileUtils.remove_dir(temp_path) FileUtils.remove_dir(temp_path)

24
lib/mixer.rb
View File

@@ -6,6 +6,8 @@ class W3DHub
# https://github.com/TheUnstoppable/MixLibrary used for reference # https://github.com/TheUnstoppable/MixLibrary used for reference
class Mixer class Mixer
DEFAULT_BUFFER_SIZE = 32_000_000 DEFAULT_BUFFER_SIZE = 32_000_000
MIX1_HEADER = 0x3158494D
MIX2_HEADER = 0x3258494D
class MixParserException < RuntimeError; end class MixParserException < RuntimeError; end
class MixFormatException < RuntimeError; end class MixFormatException < RuntimeError; end
@@ -203,8 +205,12 @@ class W3DHub
@buffer.pos = 0 @buffer.pos = 0
@encrypted = false
# Valid header # Valid header
if read_i32 == 0x3158494D if (mime = read_i32) && (mime == MIX1_HEADER || mime == MIX2_HEADER)
@encrypted = mime == MIX2_HEADER
file_data_offset = read_i32 file_data_offset = read_i32
file_names_offset = read_i32 file_names_offset = read_i32
@@ -237,7 +243,7 @@ class W3DHub
@buffer.pos = pos @buffer.pos = pos
end end
else else
raise MixParserException, "Invalid MIX file" raise MixParserException, "Invalid MIX file: Expected \"#{MIX1_HEADER}\" or \"#{MIX2_HEADER}\", got \"0x#{mime.to_s(16).upcase}\"\n(#{file_path})"
end end
ensure ensure
@@ -264,18 +270,24 @@ class W3DHub
buffer.strip buffer.strip
end end
def encrypted?
@encrypted
end
end end
class Writer class Writer
attr_reader :package attr_reader :package
def initialize(file_path:, package:, memory_buffer: false, buffer_size: DEFAULT_BUFFER_SIZE) def initialize(file_path:, package:, memory_buffer: false, buffer_size: DEFAULT_BUFFER_SIZE, encrypted: false)
@package = package @package = package
@buffer = MemoryBuffer.new(file_path: file_path, mode: :write, buffer_size: buffer_size) @buffer = MemoryBuffer.new(file_path: file_path, mode: :write, buffer_size: buffer_size)
@buffer.pos = 0 @buffer.pos = 0
@buffer.write("MIX1") @encrypted = encrypted
@buffer.write(encrypted? ? "MIX2" : "MIX1")
files = @package.files.sort { |a, b| a.file_crc <=> b.file_crc } files = @package.files.sort { |a, b| a.file_crc <=> b.file_crc }
@@ -322,6 +334,10 @@ class W3DHub
def write_byte(byte) def write_byte(byte)
@buffer.write([byte].pack("c")) @buffer.write([byte].pack("c"))
end end
def encrypted?
@encrypted
end
end end
# Eager loads patch file and streams target file metadata (doen't load target file data or generate CRCs) # Eager loads patch file and streams target file metadata (doen't load target file data or generate CRCs)