ruby-ethtool

#!/usr/bin/env ruby


# List all network interfaces using the ifconfig tool 
# Returns an array of interface names
def list_interfaces
  get_interfaces.keys
end

# Get all interfaces details. Returns a hash 
# Its cheaper to get all interfaces at once and then parse through for which one you want rather than 
# do multiple ifconfig runs.
def get_interfaces
  `ifconfig -a | grep Ethernet`.split("\n").inject({}) do |result,iface|
    result["#{iface.split[0]}"] = {'mac_address' => "#{iface.split[4]}"}
    result
  end
end

# Get all interface card details from ethtool 
def ethtool(interface = 'eth0')
  output = `ethtool #{interface}`
  output.gsub!(/\n\t\s+/,'')
  output.scan(/^\t(.*):\s*(.*)/).inject({}) do |result,element|
    result[element.first.downcase.gsub(/(\s|-)/,'_')] = element.last
    result
  end
end

# List all bridge names. No details. Returns an array
def list_bridges
  get_bridges.keys
end

# Get all bridges and put the results into a hash, with the keys being the first elements in the output
def get_bridges
  `brctl show`.split("\n").inject({}) do |result,element|
    b = element.split(/\t+/)
    result[b[0]] = {'bridge_id' => b[1], 'stp_enabled' => b[2], 'interfaces' => b[3] || ''} unless b[0] == 'bridge name'
    result
  end
end

# Create a new bridge with some name...
def create_bridge(name)
  # this is where we'll have to start using open4 to catch error codes, stderr, etc.
  `brctl addbr #{name}`.split("\n") do |l|
    p "DEBUG: #{l}"
  end
end