113 lines
3.3 KiB
Ruby
113 lines
3.3 KiB
Ruby
# frozen_string_literal: true
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module Packages
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module Debian
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class ExtractChangesMetadataService
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include Gitlab::Utils::StrongMemoize
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ExtractionError = Class.new(StandardError)
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def initialize(package_file)
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@package_file = package_file
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@entries = {}
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end
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def execute
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{
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file_type: file_type,
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architecture: metadata[:architecture],
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fields: fields,
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files: files
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}
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rescue ActiveModel::ValidationError => e
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raise ExtractionError, e.message
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end
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private
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def metadata
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strong_memoize(:metadata) do
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::Packages::Debian::ExtractMetadataService.new(@package_file).execute
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end
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end
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def file_type
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metadata[:file_type]
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end
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def fields
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metadata[:fields]
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end
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def files
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strong_memoize(:files) do
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raise ExtractionError, "is not a changes file" unless file_type == :changes
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raise ExtractionError, "Files field is missing" if fields['Files'].blank?
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raise ExtractionError, "Checksums-Sha1 field is missing" if fields['Checksums-Sha1'].blank?
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raise ExtractionError, "Checksums-Sha256 field is missing" if fields['Checksums-Sha256'].blank?
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init_entries_from_files
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entries_from_checksums_sha1
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entries_from_checksums_sha256
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entries_from_package_files
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@entries
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end
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end
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def init_entries_from_files
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each_lines_for('Files') do |line|
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md5sum, size, section, priority, filename = line.split
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entry = FileEntry.new(
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filename: filename,
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size: size.to_i,
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md5sum: md5sum,
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section: section,
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priority: priority)
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@entries[filename] = entry
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end
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end
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def entries_from_checksums_sha1
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each_lines_for('Checksums-Sha1') do |line|
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sha1sum, size, filename = line.split
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entry = @entries[filename]
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raise ExtractionError, "#{filename} is listed in Checksums-Sha1 but not in Files" unless entry
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raise ExtractionError, "Size for #{filename} in Files and Checksums-Sha1 differ" unless entry.size == size.to_i
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entry.sha1sum = sha1sum
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end
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end
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def entries_from_checksums_sha256
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each_lines_for('Checksums-Sha256') do |line|
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sha256sum, size, filename = line.split
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entry = @entries[filename]
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raise ExtractionError, "#{filename} is listed in Checksums-Sha256 but not in Files" unless entry
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raise ExtractionError, "Size for #{filename} in Files and Checksums-Sha256 differ" unless entry.size == size.to_i
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entry.sha256sum = sha256sum
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end
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end
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def each_lines_for(field)
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fields[field].split("\n").each do |line|
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next if line.blank?
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yield(line)
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end
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end
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def entries_from_package_files
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@entries.each do |filename, entry|
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entry.package_file = ::Packages::PackageFileFinder.new(@package_file.package, filename).execute!
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entry.validate!
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rescue ActiveRecord::RecordNotFound
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raise ExtractionError, "#{filename} is listed in Files but was not uploaded"
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end
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end
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end
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end
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end
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