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