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# frozen_string_literal: true
# the idea of creating zip archive with spoofed size is borrowed from
# https://github.com/rubyzip/rubyzip/pull/403/files#diff-118213fb4baa6404a40f89e1147661ebR88
RSpec.shared_context 'pages zip with spoofed size' do
let(:real_zip_path) { Tempfile.new(['real', '.zip']).path }
let(:fake_zip_path) { Tempfile.new(['fake', '.zip']).path }
before do
full_file_name = 'public/index.html'
true_size = 500_000
fake_size = 1
::Zip::File.open(real_zip_path, ::Zip::File::CREATE) do |zf|
zf.get_output_stream(full_file_name) do |os|
os.write 'a' * true_size
end
end
compressed_size = nil
::Zip::File.open(real_zip_path) do |zf|
a_entry = zf.find_entry(full_file_name)
compressed_size = a_entry.compressed_size
end
true_size_bytes = [compressed_size, true_size, full_file_name.size].pack('LLS')
fake_size_bytes = [compressed_size, fake_size, full_file_name.size].pack('LLS')
data = File.binread(real_zip_path)
data.gsub! true_size_bytes, fake_size_bytes
File.open(fake_zip_path, 'wb') do |file|
file.write data
end
end
after do
File.delete(real_zip_path) if File.exist?(real_zip_path)
File.delete(fake_zip_path) if File.exist?(fake_zip_path)
end
end
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