56 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			56 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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module StubRequests
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  IP_ADDRESS_STUB = '8.8.8.9'.freeze
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  # Fully stubs a request using WebMock class. This class also
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  # stubs the IP address the URL is translated to (DNS lookup).
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  #
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  # It expects the final request to go to the `ip_address` instead the given url.
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  # That's primarily a DNS rebind attack prevention of Gitlab::HTTP
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  # (see: Gitlab::UrlBlocker).
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  #
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  def stub_full_request(url, ip_address: IP_ADDRESS_STUB, port: 80, method: :get)
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    stub_dns(url, ip_address: ip_address, port: port)
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    url = stubbed_hostname(url, hostname: ip_address)
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    WebMock.stub_request(method, url)
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  end
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  def stub_dns(url, ip_address:, port: 80)
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    url = parse_url(url)
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    socket = Socket.sockaddr_in(port, ip_address)
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    addr = Addrinfo.new(socket)
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    # See Gitlab::UrlBlocker
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    allow(Addrinfo).to receive(:getaddrinfo)
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                         .with(url.hostname, url.port, nil, :STREAM)
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                         .and_return([addr])
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  end
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  def stub_all_dns(url, ip_address:)
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    url = URI(url)
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    port = 80 # arbitarily chosen, does not matter as we are not going to connect
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    socket = Socket.sockaddr_in(port, ip_address)
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    addr = Addrinfo.new(socket)
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    # See Gitlab::UrlBlocker
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    allow(Addrinfo).to receive(:getaddrinfo).and_call_original
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    allow(Addrinfo).to receive(:getaddrinfo)
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      .with(url.hostname, anything, nil, :STREAM)
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      .and_return([addr])
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  end
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  def stubbed_hostname(url, hostname: IP_ADDRESS_STUB)
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    url = parse_url(url)
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    url.hostname = hostname
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    url.to_s
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  end
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  private
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  def parse_url(url)
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    url.is_a?(URI) ? url : URI(url)
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  end
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end
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