1 files changed, 66 insertions, 0 deletions
diff --git a/dotfiles/scripts/fingerprint b/dotfiles/scripts/fingerprint
new file mode 100755
index 0000000..8e15a98
--- /dev/null
+++ b/dotfiles/scripts/fingerprint
@@ -0,0 +1,66 @@
+#!/usr/bin/env ruby
+
+# Usage exemple: ./fingerprint twitter.com api.twitter.com ton.twitter.com twitter.com tweetdeck.twitter.com userstream.twitter.com abs.twitter.com psb.twimg.com ton.twing.com video.twimg.com 2> /dev/null
+# List of figerprint by domain name
+
+require 'resolv'
+require 'openssl'
+require 'set'
+
+hosts = Set.new
+ips = Set.new
+certs = Set.new
+subjects = Set.new
+cas = Set.new
+fps = Set.new
+keys = Set.new
+
+resolver = Resolv::DNS.new
+ARGV.each do |host|
+  $stderr.puts host
+  hosts << host
+  resolver.each_address(host) do |ip|
+    ip = ip.to_s
+    ips << ip
+    $stderr.puts "  #{ip}"
+    tcp_client = TCPSocket.new ip, 443
+    ssl_client = OpenSSL::SSL::SSLSocket.new tcp_client
+    ssl_client.hostname = host
+    ssl_client.connect
+    cert = ssl_client.peer_cert
+    certs << cert
+
+    subject = cert.subject
+    subjects << subject
+    $stderr.puts "    CN=#{subject}"
+
+    ca = cert.issuer
+    cas << ca
+    $stderr.puts "    CA=#{ca}"
+
+    fp = OpenSSL::Digest::SHA256.hexdigest cert.to_der
+    fps << fp
+    $stderr.puts "    fp=#{fp}"
+
+    key = ::OpenSSL::Digest::SHA256.hexdigest cert.public_key.to_der
+    keys << key
+    $stderr.puts "    key=#{key}"
+
+    ssl_client.close
+  end
+end
+
+puts "#{hosts.size} hosts"
+hosts.sort.each { |l| puts "  #{l}"}
+puts "#{ips.size} IPs"
+ips.sort.each { |l| puts "  #{l}"}
+puts "#{fps.size} certificates"
+fps.sort.each { |l| puts "  #{l}"}
+puts "#{cas.size} CAs"
+cas.sort.each { |l| puts "  #{l}"}
+puts "#{subjects.size} subjects"
+subjects.sort.each { |l| puts "  #{l}"}
+puts "#{keys.size} keys"
+keys.sort.each { |l| puts "  #{l}"}
+
+