mirror of
https://github.com/cunnie/sslip.io.git
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a37bbc150c
- The impetus? I deployed a custom webserver but forgot to add the A & AAAA records for sslip.io, so the website disappeared. - I now check for the A & AAAA records (to be present, but not of any particular value because that gives me the latitude to migrate to other machines). - I also check that the website is responsive. - drive by: removed hard-coding of `sslip.io` in many tests; instead we now query the domain that the env var `DOMAIN` is set to.
108 lines
4.1 KiB
Ruby
108 lines
4.1 KiB
Ruby
#!/usr/bin/env ruby
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#
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# DOMAIN=sslip.io rspec --format documentation --color spec
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#
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# Admittedly it's overkill to use rspec to run a set of assertions
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# against a DNS server -- a simple shell script would have been
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# shorter and more understandable. We are using rspec merely to
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# practice using rspec.
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def get_whois_nameservers(domain)
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whois_output = `whois #{domain}`
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soa = nil
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whois_lines = whois_output.split(/\n+/)
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nameserver_lines = whois_lines.select { |line| line =~ /^Name Server:/ }
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nameservers = nameserver_lines.map { |line| line.split.last.downcase }.uniq
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# whois records don't have trail '.'; NS records do; add trailing '.'
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nameservers.map { |ns| ns << '.' }
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nameservers
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end
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domain = ENV['DOMAIN'] || 'example.com'
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whois_nameservers = get_whois_nameservers(domain)
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describe domain do
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soa = nil
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context "when evaluating $DOMAIN (\"#{domain}\") environment variable" do
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let (:domain) { ENV['DOMAIN'] }
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it 'is set' do
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expect(domain).not_to be_nil
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end
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it 'is not an empty string' do
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expect(domain).not_to eq('')
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end
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end
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it "should have at least 2 nameservers" do
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expect(whois_nameservers.size).to be > 1
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end
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whois_nameservers.each do |whois_nameserver|
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it "nameserver #{whois_nameserver}'s NS records match whois's #{whois_nameservers}, " +
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"`dig +short ns #{domain} @#{whois_nameserver}`" do
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dig_nameservers = `dig +short ns #{domain} @#{whois_nameserver}`.split(/\n+/)
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expect(dig_nameservers.sort).to eq(whois_nameservers.sort)
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end
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it "nameserver #{whois_nameserver}'s SOA record match" do
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dig_soa = `dig +short soa #{domain} @#{whois_nameserver}`
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soa = soa || dig_soa
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expect(dig_soa).to eq(soa)
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end
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it "nameserver #{whois_nameserver}'s has an A record" do
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expect(`dig +short a #{domain} @#{whois_nameserver}`.chomp).not_to eq('')
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expect($?.success?).to be true
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end
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it "nameserver #{whois_nameserver}'s has an AAAA record" do
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expect(`dig +short a #{domain} @#{whois_nameserver}`.chomp).not_to eq('')
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expect($?.success?).to be true
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end
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a = [ rand(256), rand(256), rand(256), rand(256) ]
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it "resolves #{a.join(".")}.#{domain} to #{a.join(".")}" do
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expect(`dig +short #{a.join(".") + "." + domain} @#{whois_nameserver}`.chomp).to eq(a.join("."))
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end
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a = [ rand(256), rand(256), rand(256), rand(256) ]
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it "resolves #{a.join("-")}.#{domain} to #{a.join(".")}" do
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expect(`dig +short #{a.join("-") + "." + domain} @#{whois_nameserver}`.chomp).to eq(a.join("."))
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end
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a = [ rand(256), rand(256), rand(256), rand(256) ]
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b = [ ('a'..'z').to_a, ('0'..'9').to_a ].flatten.shuffle[0,8].join
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it "resolves #{b}.#{a.join("-")}.#{domain} to #{a.join(".")}" do
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expect(`dig +short #{b}.#{a.join("-") + "." + domain} @#{whois_nameserver}`.chomp).to eq(a.join("."))
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end
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a = [ rand(256), rand(256), rand(256), rand(256) ]
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b = [ ('a'..'z').to_a, ('0'..'9').to_a ].flatten.shuffle[0,8].join
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it "resolves #{a.join("-")}.#{b} to #{a.join(".")}" do
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expect(`dig +short #{a.join("-") + "." + b} @#{whois_nameserver}`.chomp).to eq(a.join("."))
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end
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# don't begin the hostname with a double-dash -- `dig` mistakes it for an argument
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it "resolves api.--.#{domain}' to eq ::)}" do
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expect(`dig +short AAAA api.--.#{domain} @#{whois_nameserver}`.chomp).to eq("::")
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end
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it "resolves localhost.--1.#{domain}' to eq ::1)}" do
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expect(`dig +short AAAA localhost.api.--1.#{domain} @#{whois_nameserver}`.chomp).to eq("::1")
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end
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it "resolves 2001-4860-4860--8888.#{domain}' to eq 2001:4860:4860::8888)}" do
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expect(`dig +short AAAA 2001-4860-4860--8888.#{domain} @#{whois_nameserver}`.chomp).to eq("2001:4860:4860::8888")
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end
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it "resolves 2601-646-100-69f0--24.#{domain}' to eq 2601:646:100:69f0::24)}" do
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expect(`dig +short AAAA 2601-646-100-69f0--24.#{domain} @#{whois_nameserver}`.chomp).to eq("2601:646:100:69f0::24")
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end
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end
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# check the website
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it "is able to reach https://#{domain} and get a valid response (2xx)" do
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`curl -If https://#{domain} 2> /dev/null`
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expect($?.success?).to be true
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end
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end
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