The Config class holds various bits of useful default information for packet creation. If initialized without arguments, @iface will be set to ENV[‘IFACE’] or Pcap.lookupdev (or lo), and the @pcapfile will be set to “/tmp/out.pcap“ # (yes, it’s Linux-biased, sorry, fixing this is a TODO.)

Any number of instance variables can be passed in to the intialize function (as a hash), though only the expected network-related variables will be readable and writeable directly.

Examples

  PacketFu::Config.new(:ip_saddr => "1.2.3.4").ip_saddr #=> "1.2.3.4"
  PacketFu::Config.new(:foo=>"bar").foo #=> NomethodError: undefined method `foo'...

The config() function, however, does provide access to custom variables: 

  PacketFu::Config.new(:foo=>"bar").config[:foo] #=> "bar"
  obj = PacketFu::Config.new(:foo=>"bar")
  obj.config(:baz => "bat")
  obj.config #=> {:iface=>"eth0", :baz=>"bat", :pcapfile=>"/tmp/out.pcap", :foo=>"bar"}
Methods
C
N
Attributes
[RW] eth_saddr
[RW] eth_daddr
[RW] eth_src
[RW] eth_dst
[RW] ip_saddr
[RW] ip_src
[RW] iface
[RW] pcapfile
Class Public methods
new(args={})

Source: show 

# File lib/packetfu/config.rb, line 34
                def initialize(args={})
                        if Process.euid.zero?
                                @iface = args[:iface] || ENV['IFACE'] || Pcap.lookupdev || "lo" 
                        end  
                        @pcapfile = "/tmp/out.pcap"
                        args.each_pair { |k,v| self.instance_variable_set(("@#{k}"),v) }
                end
Instance Public methods
config(arg=nil)

Returns all instance variables as a hash (including custom variables set at initialization).

Source: show 

# File lib/packetfu/config.rb, line 43
                def config(arg=nil)
                        if arg
                                arg.each_pair {|k,v| self.instance_variable_set(("@" + k.to_s).intern, v)}
                        else
                                config_hash = {}
                                self.instance_variables.each do |v| 
                                        key = v.to_s.gsub(/^@/,"").to_sym
                                        config_hash[key] = self.instance_variable_get(v) 
                                end
                                config_hash
                        end
                end