Module: SteamPacketFactory

Included in:
RCONPacketFactory
Defined in:
lib/steam/packets/steam_packet_factory.rb

Class Method Summary collapse

Class Method Details

.packet_from_data(raw_data) ⇒ Object

Creates a new packet object based on the header byte of the given raw data



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# File 'lib/steam/packets/steam_packet_factory.rb', line 27

def self.packet_from_data(raw_data)
  header = raw_data[0].ord
  data = raw_data[1..-1]

  case header
    when SteamPacket::S2A_INFO_DETAILED_HEADER
      return S2A_INFO_DETAILED_Packet.new(data)
    when SteamPacket::A2S_INFO_HEADER
      return A2S_INFO_Packet.new
    when SteamPacket::S2A_INFO2_HEADER
      return S2A_INFO2_Packet.new(data)
    when SteamPacket::A2A_PING_HEADER
      return A2A_PING_Packet.new
    when SteamPacket::A2A_ACK_HEADER
      return A2A_ACK_Packet.new(data)
    when SteamPacket::A2S_PLAYER_HEADER
      return A2S_PLAYER_Packet.new
    when SteamPacket::S2A_PLAYER_HEADER
      return S2A_PLAYER_Packet.new(data)
    when SteamPacket::A2S_RULES_HEADER
      return A2S_RULES_Packet
    when SteamPacket::S2A_RULES_HEADER
      return S2A_RULES_Packet.new(data)
    when SteamPacket::A2S_SERVERQUERY_GETCHALLENGE_HEADER
      return A2S_SERVERQUERY_GETCHALLENGE_Packet.new
    when SteamPacket::S2C_CHALLENGE_HEADER
      return S2C_CHALLENGE_Packet.new(data)
    when SteamPacket::A2M_GET_SERVERS_BATCH2_HEADER
      return A2M_GET_SERVERS_BATCH2_Packet.new(data)
    when SteamPacket::M2A_SERVER_BATCH_HEADER
      return M2A_SERVER_BATCH_Packet.new(data)
    when SteamPacket::RCON_GOLDSRC_CHALLENGE_HEADER,
         SteamPacket::RCON_GOLDSRC_NO_CHALLENGE_HEADER,
         SteamPacket::RCON_GOLDSRC_RESPONSE_HEADER
      return RCONGoldSrcResponse.new(data)
    else
      raise SteamCondenserException.new("Unknown packet with header 0x#{header.to_s(16)} received.")
  end
end

.reassemble_packet(split_packets, is_compressed = false, packet_checksum = 0) ⇒ Object 



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# File 'lib/steam/packets/steam_packet_factory.rb', line 67

def self.reassemble_packet(split_packets, is_compressed = false, packet_checksum = 0)
  packet_data = split_packets.join ''

  if is_compressed
    begin
      require 'bz2'
      packet_data = BZ2.uncompress(packet_data)
    rescue LoadError
      raise SteamCondenserException.new('You need to install the libbzip2 interface for Ruby.')
    end

    unless Zlib.crc32(packet_data) == packet_checksum
      raise PacketFormatException.new('CRC32 checksum mismatch of uncompressed packet data.')
    end
  end

  packet_from_data packet_data[4..-1]
end