#!/usr/bin/ruby
-require "net/http"
+require "socket"
+require "openssl"
-domain = ARGV.first
+host = ARGV.shift
+address = ARGV.shift
+domains = ARGV
+
+context = OpenSSL::SSL::SSLContext.new
+context.verify_mode = OpenSSL::SSL::VERIFY_NONE
begin
- connection = Net::HTTP.start(domain, :use_ssl => true)
- certificate = connection.peer_cert
+ socket = TCPSocket.new(address, 443)
+
+ ssl = OpenSSL::SSL::SSLSocket.new(socket, context)
+ ssl.sync_close = true
+ ssl.hostname = domains.first
+ ssl.connect
+rescue StandardError => e
+ puts "Error connecting to #{host}: #{e.message}"
+end
+
+if ssl
+ certificate = ssl.peer_cert
if Time.now < certificate.not_before
- puts "Certificate #{domain} not valid until #{certificate.not_before}"
- elsif certificate.not_after - Time.now < 14 * 86400
- puts "Certificate #{domain} expires at #{certificate.not_after}"
- else
- subject_alt_name = certificate.extensions.find { |e| e.oid == "subjectAltName" }
+ puts "Certificate #{domains.first} on #{host} not valid until #{certificate.not_before}"
+ elsif certificate.not_after - Time.now < 21 * 86400
+ puts "Certificate #{domains.first} on #{host} expires at #{certificate.not_after}"
+ end
- if subject_alt_name.nil?
- puts "Certificate #{domain} has no subjectAltName"
- else
- alt_names = subject_alt_name.value.split(/\s*,\s*/).sort
+ subject_alt_name = certificate.extensions.find { |ext| ext.oid == "subjectAltName" }
- ARGV.sort.each do |expected|
- puts "Certificate #{domain} is missing subjectAltName #{expected}" unless alt_names.shift == "DNS:#{expected}"
- end
+ if subject_alt_name.nil?
+ puts "Certificate #{domains.first} on #{host} has no subjectAltName"
+ else
+ alt_names = subject_alt_name.value.split(/\s*,\s*/).map { |n| n.sub(/^DNS:/, "") }
- alt_names.each do |name|
- puts "Certificate #{domain} has unexpected subjectAltName #{name}"
+ domains.each do |domain|
+ if alt_names.include?(domain)
+ alt_names.delete(domain)
+ else
+ puts "Certificate #{domains.first} on #{host} is missing subjectAltName #{domain}"
end
end
+
+ alt_names.each do |name|
+ puts "Certificate #{domains.first} on #{host} has unexpected subjectAltName #{name}"
+ end
end
- connection.finish
-rescue StandardError => error
- puts "Error connecting to #{domain}: #{error.message}"
+ ssl.close
end