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# -*- coding: binary -*-
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module Msf
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  module Util
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    module Host
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      #
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      # Returns something suitable for the +:host+ parameter to the various report_* methods
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      #
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      # Takes a Host object, a Session object, an Msf::Session object or a String
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      # address
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      #
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      def self.normalize_host(host)
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        return host if defined?(::Mdm) && host.kind_of?(::Mdm::Host)
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        norm_host = nil
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        if host.kind_of?(String)
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          if Rex::Socket.is_ipv4?(host)
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            norm_host = host
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          elsif Rex::Socket.is_ipv6?(host)
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            # If it's an IPv6 addr, drop the zone_id
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            address, _ = host.split('%', 2)
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            norm_host = address
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          else
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            begin
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              norm_host = Rex::Socket.getaddress(host, true)
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            rescue SocketError
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            end
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          end
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        elsif defined?(::Mdm) && host.kind_of?(::Mdm::Session)
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          norm_host = host.host
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        elsif host.respond_to?(:session_host)
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          # Then it's an Msf::Session object
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          norm_host = host.session_host
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        end
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        # If we got here and don't have a norm_host yet, it could be a
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        # Msf::Session object with an empty or nil tunnel_host and tunnel_peer;
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        # see if it has a socket and use its peerhost if so.
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        if (
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        norm_host.nil? &&
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            host.respond_to?(:sock) &&
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            host.sock.respond_to?(:peerhost) &&
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            host.sock.peerhost.to_s.length > 0
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        )
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          norm_host = session.sock.peerhost
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        end
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        # If We got here and still don't have a real host, there's nothing left
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        # to try, just log it and return what we were given
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        if !norm_host
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          dlog("Host could not be normalized: #{host.inspect}")
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        end
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        norm_host
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      end
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    end
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  end
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end
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