95 lines
2.5 KiB
Ruby
95 lines
2.5 KiB
Ruby
#!/usr/bin/env ruby
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require 'openssl'
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require 'zlib'
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require 'stringio'
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require 'rubygems'
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begin
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require 'json'
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rescue
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abort('ERROR: plz2run #> gem install json')
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end
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# usage: ./content_from_pem.rb 5286016419950084643.pem
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def akamai_hex_to_content_set(akamai_hex)
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gzipped_hex = akamai_hex.gsub(":","").chomp("00")
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gzipped_data = [gzipped_hex].pack("H*")
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gzipped_data_io = StringIO.new(gzipped_data)
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gz = Zlib::GzipReader.new(gzipped_data_io)
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content_sets = gz.read.split("|")
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begin
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gz.close
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rescue Zlib::GzipFile::NoFooter
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end
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return content_sets
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end
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def mk_hash(sgmts, hash = nil)
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hash = {} unless hash.kind_of? Hash
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segment = sgmts.shift
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return hash if segment.nil?
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unless hash.has_key?(segment)
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hash[segment] = mk_hash(sgmts, {})
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else
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hash[segment].update(mk_hash(sgmts, hash[segment]))
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end
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return hash
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end
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def compress_prefix(hash)
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hash.keys.each do |key|
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hash[key] = compress_prefix(hash[key])
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if hash[key].length == 1
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new_key = key + "/" + hash[key].keys[0]
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hash[new_key] = hash[key].values[0]
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hash.delete(key)
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end
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end
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return hash
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end
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if $0 == __FILE__
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if ARGV.length == 0
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cert_data = STDIN.read
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cert = OpenSSL::X509::Certificate.new(cert_data)
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content_hex = cert.extensions.detect {|ext| ext.oid == 'subjectKeyIdentifier' }
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abort('ERROR: no X509v3 extension for subjectKeyIdentifier') unless content_hex
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puts akamai_hex_to_content_set(content_hex.value)
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end
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ARGV.each do |arg|
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next unless FileTest.file?(arg)
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cert_data = File.read(arg)
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cert = OpenSSL::X509::Certificate.new(cert_data)
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content_hex = cert.extensions.detect {|ext| ext.oid == 'subjectKeyIdentifier' }
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abort('ERROR: no X509v3 extension for subjectKeyIdentifier') unless content_hex
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ext = File.extname(arg)
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txt_name = File.basename(arg, ext) + ".txt"
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json_name = File.basename(arg, ext) + ".json"
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sets = akamai_hex_to_content_set(content_hex.value)
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File.open(txt_name, "w+") do |file|
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file.write(sets)
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end
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File.open(json_name, "w+") do |file|
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h = {}
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sets.each do |set|
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line = set.start_with?("/") ? set[1..-1] : set
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# => ["content", "beta", "rhel", "server", "6", "$releasever", "$basearch", "scalablefilesystem", "debug"]
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chunks = line.split("/")
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h = mk_hash(chunks, h)
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end
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h = compress_prefix(h)
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file.write(h.to_json)
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end
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puts "Wrote:\n [%d] %s\n [%d] %s" % [File.size(txt_name), txt_name, File.size(json_name), json_name]
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end
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end
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