101 lines
2.8 KiB
Ruby
101 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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module Pages
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class ZipDirectoryService
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include BaseServiceUtility
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include Gitlab::Utils::StrongMemoize
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# used only to track exceptions in Sentry
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InvalidEntryError = Class.new(StandardError)
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PUBLIC_DIR = 'public'
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def initialize(input_dir)
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@input_dir = input_dir
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end
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def execute
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return error("Can not find valid public dir in #{@input_dir}") unless valid_path?(public_dir)
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output_file = File.join(real_dir, "@migrated.zip") # '@' to avoid any name collision with groups or projects
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FileUtils.rm_f(output_file)
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entries_count = 0
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::Zip::File.open(output_file, ::Zip::File::CREATE) do |zipfile|
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write_entry(zipfile, PUBLIC_DIR)
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entries_count = zipfile.entries.count
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end
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success(archive_path: output_file, entries_count: entries_count)
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rescue => e
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FileUtils.rm_f(output_file) if output_file
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raise e
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end
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private
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def write_entry(zipfile, zipfile_path)
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disk_file_path = File.join(real_dir, zipfile_path)
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unless valid_path?(disk_file_path)
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# archive with invalid entry will just have this entry missing
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raise InvalidEntryError
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end
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case File.lstat(disk_file_path).ftype
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when 'directory'
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recursively_zip_directory(zipfile, disk_file_path, zipfile_path)
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when 'file', 'link'
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zipfile.add(zipfile_path, disk_file_path)
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else
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raise InvalidEntryError
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end
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rescue InvalidEntryError => e
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Gitlab::ErrorTracking.track_exception(e, input_dir: @input_dir, disk_file_path: disk_file_path)
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end
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def recursively_zip_directory(zipfile, disk_file_path, zipfile_path)
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zipfile.mkdir(zipfile_path)
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entries = Dir.entries(disk_file_path) - %w[. ..]
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entries = entries.map { |entry| File.join(zipfile_path, entry) }
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write_entries(zipfile, entries)
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end
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def write_entries(zipfile, entries)
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entries.each do |zipfile_path|
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write_entry(zipfile, zipfile_path)
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end
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end
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# that should never happen, but we want to be safer
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# in theory without this we would allow to use symlinks
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# to pack any directory on disk
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# it isn't possible because SafeZip doesn't extract such archives
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def valid_path?(disk_file_path)
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realpath = File.realpath(disk_file_path)
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realpath == public_dir || realpath.start_with?(public_dir + "/")
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# happens if target of symlink isn't there
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rescue => e
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Gitlab::ErrorTracking.track_exception(e, input_dir: real_dir, disk_file_path: disk_file_path)
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false
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end
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def real_dir
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strong_memoize(:real_dir) do
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File.realpath(@input_dir) rescue nil
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end
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end
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def public_dir
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strong_memoize(:public_dir) do
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File.join(real_dir, PUBLIC_DIR) rescue nil
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end
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end
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end
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end
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