Module: Vagrant::Util::GuestNetworks::Linux

Defined in:
lib/vagrant/util/guest_networks.rb

Constant Summary collapse

NETWORK_MANAGER_DEVICE_DIRECTORY = 
"/etc/NetworkManager/system-connections".freeze

Instance Method Summary collapse

Instance Method Details

#configure_network_manager(machine, networks, **opts) ⇒ Object 



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# File 'lib/vagrant/util/guest_networks.rb', line 11

def configure_network_manager(machine, networks, **opts)
  comm = machine.communicate
  nm_directory = opts.fetch(:nm_directory, NETWORK_MANAGER_DEVICE_DIRECTORY)

  interfaces = machine.guest.capability(:network_interfaces)
  net_configs = machine.config.vm.networks.find_all { |type, _| type.to_s.end_with?("_network") }.map(&:last)

  # Get IDs of currently configured devices
  current_devs = get_current_devices(comm)

  networks.each.with_index do |network, i|
    net_opts = (net_configs[i] || {}).merge(network)
    net_opts[:type] = net_opts[:type].to_s
    net_opts[:device] = interfaces[network[:interface]]

    if !net_opts[:mac_address]
      comm.execute("cat /sys/class/net/#{net_opts[:device]}/address") do |type, data|
        net_opts[:mac_address] = data if type == :stdout
      end
    end

    tmpl_opts = {
      interface_name: net_opts[:device],
      type: net_opts[:type],
      mac_address: net_opts[:mac_address],
      uuid: SecureRandom.uuid
    }

    if net_opts[:type] != "dhcp"
      begin
        addr = IPAddr.new("#{net_opts[:ip]}")
        if addr.ipv4?
          tmpl_opts[:ipv4] = addr.to_string
          masked = addr.mask(net_opts[:netmask])

          tmpl_opts[:ipv4_mask] = masked.prefix
          tmpl_opts[:ipv4_gateway] = masked.succ.to_string
        else
          tmpl_opts[:ipv6] = addr.to_string
          masked = addr.mask(net_opts[:netmask])

          tmpl_opts[:ipv6_mask] = masked.prefix
          tmpl_opts[:ipv6_gateway] = masked.succ.to_string
        end
      rescue IPAddr::Error => err
        raise NetworkAddressInvalid,
              address: net_opts[:ip],
              mask: net_opts[:netmask],
              error: err.to_s
      end
    end

    entry = TemplateRenderer.render("networking/network_manager/network_manager_device", options: tmpl_opts)
    remote_path = "/tmp/vagrant-network-entry-#{net_opts[:device]}-#{Time.now.to_i}-#{i}"
    final_path = "#{nm_directory}/#{net_opts[:device]}.nmconnection"

    Tempfile.open("vagrant-nm-configure-networks") do |f|
      f.binmode
      f.write(entry)
      f.fsync
      f.close
      comm.upload(f.path, remote_path)
    end

    # Remove the device if it already exists
    if device_id = current_devs[net_opts[:device]]
      [
        "nmcli d disconnect '#{net_opts[:device]}'",
        "nmcli c delete '#{device_id}'",
      ].each do |cmd|
        comm.sudo(cmd, error_check: false)
      end
    end

    # Apply the config
    [
      "chown root:root '#{remote_path}'",
      "chmod 0600 '#{remote_path}'",
      "mv '#{remote_path}' '#{final_path}'",
      "nmcli c load '#{final_path}'",
      "nmcli d connect '#{net_opts[:device]}'"
    ].each do |cmd|
      comm.sudo(cmd)
    end
  end
end

#get_current_devices(comm) ⇒ Hash

Get all network devices currently managed by NetworkManager.

Parameters:

Returns:

  • (Hash) —

    A hash of current device names and their associated IDs.



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# File 'lib/vagrant/util/guest_networks.rb', line 101

def get_current_devices(comm)
  {}.tap do |cd|
    comm.execute("nmcli -t c show") do |type, data|
      if type == :stdout
        data.strip.lines.map(&:chomp).each do |line|
          next if line.strip.empty?
          _, id, _, dev = line.strip.split(':')
          cd[dev] = id
        end
      end
    end
  end
end