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# frozen_string_literal: true
module SendFileUpload
def send_upload(file_upload, send_params: {}, redirect_params: {}, attachment: nil, proxy: false, disposition: 'attachment')
if attachment
response_disposition = ::Gitlab::ContentDisposition.format(disposition: disposition, filename: attachment)
# Response-Content-Type will not override an existing Content-Type in
# Google Cloud Storage, so the metadata needs to be cleared on GCS for
# this to work. However, this override works with AWS.
redirect_params[:query] = { "response-content-disposition" => response_disposition,
"response-content-type" => guess_content_type(attachment) }
# By default, Rails will send uploads with an extension of .js with a
# content-type of text/javascript, which will trigger Rails'
# cross-origin JavaScript protection.
send_params[:content_type] = 'text/plain' if File.extname(attachment) == '.js'
send_params.merge!(filename: attachment, disposition: utf8_encoded_disposition(disposition, attachment))
end
if file_upload.file_storage?
send_file file_upload.path, send_params
elsif file_upload.class.proxy_download_enabled? || proxy
headers.store(*Gitlab::Workhorse.send_url(file_upload.url(**redirect_params)))
head :ok
else
redirect_to file_upload.url(**redirect_params)
end
end
# Since Rails 5 doesn't properly support support non-ASCII filenames,
# we have to add our own to ensure RFC 5987 compliance. However, Rails
# 5 automatically appends `filename#{filename}` here:
# https://github.com/rails/rails/blob/v5.0.7/actionpack/lib/action_controller/metal/data_streaming.rb#L137
# Rails 6 will have https://github.com/rails/rails/pull/33829, so we
# can get rid of this special case handling when we upgrade.
def utf8_encoded_disposition(disposition, filename)
content = ::Gitlab::ContentDisposition.new(disposition: disposition, filename: filename)
"#{disposition}; #{content.utf8_filename}"
end
def guess_content_type(filename)
types = MIME::Types.type_for(filename)
if types.present?
types.first.content_type
else
"application/octet-stream"
end
end
end
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