Class: Ifconfig

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/ifconfig/common/ifconfig.rb,
lib/ifconfig/bsd/ifconfig.rb,
lib/ifconfig/linux/ifconfig.rb,
lib/ifconfig/sunos/ifconfig.rb

Overview

$Id: ifconfig.rb,v 1.1.1.1 2005/07/02 19:10:58 hobe Exp $

Constant Summary collapse

@@ifcfg_cmd =

ifconfig = user provided ifconifg output netstat = same, but for netstat -in

"/usr/bin/env ifconfig -a"
@@netstat_cmd = 
"/usr/bin/env netstat -in"

Instance Method Summary collapse

Constructor Details

#initialize(input = nil, verbose = nil) ⇒ Ifconfig

Can manually specify the platform (should be output of the ‘uname’ command) and the ifconfig input



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# File 'lib/ifconfig/linux/ifconfig.rb', line 13

def initialize(ifconfig=nil,netstat=nil,verbose=nil)
  @ifconfig = ifconfig
  @ifconfig ||= IO.popen(@@ifcfg_cmd){ |f| f.readlines.join }

  @netstat = netstat
  @netstat ||= IO.popen(@@netstat_cmd){ |f| f.readlines.join }

  @verbose = verbose

  @ifaces = {}
  split_interfaces(@ifconfig).each do |iface|
    iface_name = get_iface_name(iface)
    case iface
      when /^lo\d\:/im
        @ifaces[iface_name] = LoopbackInterface.new(iface_name,iface)
        parse_activity(iface_name)
      when /\s+media\:\s+Ethernet\s+/im
        @ifaces[iface_name] = EthernetAdapter.new(iface_name,iface)
        parse_activity(iface_name)
      when /\s+supported\smedia\:\s+none\s+autoselect\s+/im
        # This clause is only matched on Darwin. This pattern will only be
        # matched on ethernet devices (won't match on fw0 or any other
        # interface I can see).
        @ifaces[iface_name] = EthernetAdapter.new(iface_name,iface)
        parse_activity(iface_name)
      else
        puts "Unknown Adapter Type: #{iface}" if @verbose
    end
  end
end

Instance Method Details

#[](iface) ⇒ Object

Give hash like access to the interfaces



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# File 'lib/ifconfig/common/ifconfig.rb', line 9

def [](iface)
  return @ifaces[iface]
end

#addresses(type = nil) ⇒ Object

return list of all addresses on all interfaces reported by ifconfig



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# File 'lib/ifconfig/common/ifconfig.rb', line 55

def addresses(type=nil)
  addr = []
  @ifaces.each_value { |iface|
    addr += iface.addresses
  }
  return addr
end

#addrs_with_type ⇒ Object

returns array of arrays

[address , type

]



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# File 'lib/ifconfig/common/ifconfig.rb', line 66

def addrs_with_type
  addr = []
  @ifaces.each_value { |iface|
    addr += iface.addrs_with_type
  }
  return addr
end

#each(&block) ⇒ Object 



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# File 'lib/ifconfig/common/ifconfig.rb', line 13

def each( &block )
  return @ifaces.each_value( &block )
end

#get_iface_name(text) ⇒ Object

Given an interface block returns the name of an interface (eth0, eth0:1 ppp0, etc.)



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# File 'lib/ifconfig/common/ifconfig.rb', line 37

def get_iface_name(text)
  name = Regexp.compile(/^(\S+)/).match(text)[1]
  # strip trailing :, for bsd, sun
  name.sub!(/:$/,'')
  return name
end

#interfaces ⇒ Object

return list of interface names



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# File 'lib/ifconfig/common/ifconfig.rb', line 19

def interfaces
  return @ifaces.keys
end

#parse_activity(iface) ⇒ Object

Parse activity on interface

Not doing it in each interface class so we can pass in fake input



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# File 'lib/ifconfig/bsd/ifconfig.rb', line 50

def parse_activity(iface)
  mtu = rxpackets = rxerrors = txpackets = txerrors = 0
  @netstat.split("\n").each { |line|
    line.strip!
    if line =~ /^#{iface}/
      next if line.split[2] =~ /\<Link\#\d\>/
      puts "matched line for "+iface
      toks = line.split
      mtu = toks[1]
      rxpackets += toks[4].to_i
      rxerrors += toks[5].to_i
      txpackets += toks[6].to_i
      txerrors += toks[7].to_i
      @ifaces[iface].mtu = mtu.to_i
      @ifaces[iface].rx = { 'packets' => rxpackets,
                            'errors' => rxerrors }
      @ifaces[iface].tx = { 'packets' => txpackets,
                            'errors' => txerrors }
    end
  }
end

#split_interfaces(text) ⇒ Object

returns array of interface text blocks



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# File 'lib/ifconfig/common/ifconfig.rb', line 25

def split_interfaces(text)
  ifaces = []
  text.split("\n").each { |line|
    ifaces[ifaces.length] = "" if line =~ /^\S/
    ifaces[ifaces.length-1] += line.rstrip+"\n"
  }
  return ifaces
end

#to_s ⇒ Object 



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# File 'lib/ifconfig/common/ifconfig.rb', line 44

def to_s
  s=""
  self.interfaces.sort.each { |k|
    s += @ifaces[k].to_s
    s += "\n-------------------------\n"
  }
  return s
end

#valid_addr?(addr, type = 'inet') ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ifconfig/common/ifconfig.rb', line 74

def valid_addr?(addr,type='inet')
  case type
    when /(inet|v4)/
      return addr.ipv4?
    when /(inet6|v6)/
      return addr.ipv6?
    else
      raise "Unknown address type `#{type}' for address `#{addr}'"
  end
end