Class: Datalink::Socket

Inherits:
Socket
  • Object
show all
Defined in:
lib/dl_socket_linux.rb,
lib/dl_socket_darwin.rb

Direct Known Subclasses

Ethernet::Socket

Constant Summary collapse

IFF_UP = 
0x0001
IFF_BROADCAST = 
0x0002
IFF_DEBUG = 
0x0004
IFF_LOOPBACK = 
0x0008
IFF_P2P = 
0x0010
IFF_NOTRAILERS = 
0x0020
IFF_RUNNING = 
0x0040
IFF_NOARP = 
0x0080
IFF_PROMISC = 
0x0100
IFF_ALLMULTI = 
0x0200
IFF_MASTER = 
0x0400
IFF_SLAVE = 
0x0800
IFF_MULTICAST = 
0x1000
SIOCGIFINDEX = 
0x8933
SIOCGIFFLAGS = 
0x8913
SIOCSIFFLAGS = 
0x8914
PF_PACKET = 
17
AF_PACKET = 
PF_PACKET
IFNAMSIZ = 
16

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(if_name) ⇒ Socket

Returns a new instance of Socket.



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# File 'lib/dl_socket_linux.rb', line 48

def initialize(if_name, proto=0x003)
  @if_name = if_name
  super(PF_PACKET, Socket::SOCK_RAW, proto)
  ifreq = [if_name.dup].pack 'a32'
  ioctl(SIOCGIFINDEX, ifreq)
  bind [AF_PACKET].pack('s') + [proto].pack('n') + ifreq[16..20]+ ("\x00" * 12)
end

Instance Attribute Details

#device ⇒ Object (readonly)

Returns the value of attribute device.



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# File 'lib/dl_socket_darwin.rb', line 32

def device
  @device
end

#device_name ⇒ Object (readonly)

Returns the value of attribute device_name.



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# File 'lib/dl_socket_darwin.rb', line 32

def device_name
  @device_name
end

#if_name ⇒ Object

Returns the value of attribute if_name.



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# File 'lib/dl_socket_darwin.rb', line 31

def if_name
  @if_name
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/dl_socket_darwin.rb', line 73

def close
  @file_handle.close
end

#flags ⇒ Object 



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# File 'lib/dl_socket_linux.rb', line 29

def flags
  read_flags
end

#open(if_name = @if_name) ⇒ Object 



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# File 'lib/dl_socket_linux.rb', line 70

def open
end

#recv ⇒ Object 



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# File 'lib/dl_socket_linux.rb', line 56

def recv
  data, from = recvfrom(2048)
  ether_type = data[12,2].unpack('n')[0]
  [data, ether_type, Time.now]
end

#send(obj) ⇒ Object 



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# File 'lib/dl_socket_linux.rb', line 62

def send(obj)
  if obj.respond_to?(:encode)
    super(obj.encode,0)
  else
    super(obj,0)
  end
end