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Dir : //proc/thread-self/root/proc/self/root/proc/self/root/opt/alt/ruby19/lib64/ruby/1.9.1/drb/ssl.rb

require 'socket'
require 'openssl'
require 'drb/drb'
require 'singleton'

module DRb

  class DRbSSLSocket < DRbTCPSocket

    class SSLConfig

      DEFAULT = {
        :SSLCertificate       => nil,
        :SSLPrivateKey        => nil,
        :SSLClientCA          => nil,
        :SSLCACertificatePath => nil,
        :SSLCACertificateFile => nil,
        :SSLVerifyMode        => ::OpenSSL::SSL::VERIFY_NONE,
        :SSLVerifyDepth       => nil,
        :SSLVerifyCallback    => nil,   # custom verification
        :SSLCertificateStore  => nil,
        # Must specify if you use auto generated certificate.
        :SSLCertName          => nil,   # e.g. [["CN","fqdn.example.com"]]
        :SSLCertComment       => "Generated by Ruby/OpenSSL"
      }

      def initialize(config)
        @config  = config
        @cert    = config[:SSLCertificate]
        @pkey    = config[:SSLPrivateKey]
        @ssl_ctx = nil
      end

      def [](key);
        @config[key] || DEFAULT[key]
      end

      def connect(tcp)
        ssl = ::OpenSSL::SSL::SSLSocket.new(tcp, @ssl_ctx)
        ssl.sync = true
        ssl.connect
        ssl
      end

      def accept(tcp)
        ssl = OpenSSL::SSL::SSLSocket.new(tcp, @ssl_ctx)
        ssl.sync = true
        ssl.accept
        ssl
      end

      def setup_certificate
        if @cert && @pkey
          return
        end

        rsa = OpenSSL::PKey::RSA.new(1024){|p, n|
          next unless self[:verbose]
          case p
          when 0; $stderr.putc "."  # BN_generate_prime
          when 1; $stderr.putc "+"  # BN_generate_prime
          when 2; $stderr.putc "*"  # searching good prime,
                                    # n = #of try,
                                    # but also data from BN_generate_prime
          when 3; $stderr.putc "\n" # found good prime, n==0 - p, n==1 - q,
                                    # but also data from BN_generate_prime
          else;   $stderr.putc "*"  # BN_generate_prime
          end
        }

        cert = OpenSSL::X509::Certificate.new
        cert.version = 3
        cert.serial = 0
        name = OpenSSL::X509::Name.new(self[:SSLCertName])
        cert.subject = name
        cert.issuer = name
        cert.not_before = Time.now
        cert.not_after = Time.now + (365*24*60*60)
        cert.public_key = rsa.public_key

        ef = OpenSSL::X509::ExtensionFactory.new(nil,cert)
        cert.extensions = [
          ef.create_extension("basicConstraints","CA:FALSE"),
          ef.create_extension("subjectKeyIdentifier", "hash") ]
        ef.issuer_certificate = cert
        cert.add_extension(ef.create_extension("authorityKeyIdentifier",
                                               "keyid:always,issuer:always"))
        if comment = self[:SSLCertComment]
          cert.add_extension(ef.create_extension("nsComment", comment))
        end
        cert.sign(rsa, OpenSSL::Digest::SHA1.new)

        @cert = cert
        @pkey = rsa
      end

      def setup_ssl_context
        ctx = ::OpenSSL::SSL::SSLContext.new
        ctx.cert            = @cert
        ctx.key             = @pkey
        ctx.client_ca       = self[:SSLClientCA]
        ctx.ca_path         = self[:SSLCACertificatePath]
        ctx.ca_file         = self[:SSLCACertificateFile]
        ctx.verify_mode     = self[:SSLVerifyMode]
        ctx.verify_depth    = self[:SSLVerifyDepth]
        ctx.verify_callback = self[:SSLVerifyCallback]
        ctx.cert_store      = self[:SSLCertificateStore]
        @ssl_ctx = ctx
      end
    end

    def self.parse_uri(uri)
      if uri =~ /^drbssl:\/\/(.*?):(\d+)(\?(.*))?$/
        host = $1
        port = $2.to_i
        option = $4
        [host, port, option]
      else
        raise(DRbBadScheme, uri) unless uri =~ /^drbssl:/
        raise(DRbBadURI, 'can\'t parse uri:' + uri)
      end
    end

    def self.open(uri, config)
      host, port, = parse_uri(uri)
      host.untaint
      port.untaint
      soc = TCPSocket.open(host, port)
      ssl_conf = SSLConfig::new(config)
      ssl_conf.setup_ssl_context
      ssl = ssl_conf.connect(soc)
      self.new(uri, ssl, ssl_conf, true)
    end

    def self.open_server(uri, config)
      uri = 'drbssl://:0' unless uri
      host, port, = parse_uri(uri)
      if host.size == 0
        host = getservername
        soc = open_server_inaddr_any(host, port)
      else
        soc = TCPServer.open(host, port)
      end
      port = soc.addr[1] if port == 0
      @uri = "drbssl://#{host}:#{port}"

      ssl_conf = SSLConfig.new(config)
      ssl_conf.setup_certificate
      ssl_conf.setup_ssl_context
      self.new(@uri, soc, ssl_conf, false)
    end

    def self.uri_option(uri, config)
      host, port, option = parse_uri(uri)
      return "drbssl://#{host}:#{port}", option
    end

    def initialize(uri, soc, config, is_established)
      @ssl = is_established ? soc : nil
      super(uri, soc.to_io, config)
    end

    def stream; @ssl; end

    def close
      if @ssl
        @ssl.close
        @ssl = nil
      end
      super
    end

    def accept
      begin
      while true
        soc = @socket.accept
        break if (@acl ? @acl.allow_socket?(soc) : true)
        soc.close
      end
      begin
	ssl = @config.accept(soc)
      rescue Exception
        soc.close
        raise
      end
      self.class.new(uri, ssl, @config, true)
      rescue OpenSSL::SSL::SSLError
        warn("#{__FILE__}:#{__LINE__}: warning: #{$!.message} (#{$!.class})") if @config[:verbose]
        retry
      end
    end
  end

  DRbProtocol.add_protocol(DRbSSLSocket)
end