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#
# Copyright:: Copyright 2018, Chef Software, Inc
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require "ipaddr"
require "iniparse"
require "chef/mixin/which"
require "chef/mixin/shell_out"
class Chef
class Provider
class Ifconfig
class Systemd < Chef::Provider::Ifconfig
extend Chef::Mixin::Which
include Chef::Mixin::ShellOut
extend Chef::Mixin::ShellOut
provides :ifconfig do
systemd_unit_enabled?("systemd-networkd")
end
def load_current_resource
@current_resource = Chef::Resource::Ifconfig.new(new_resource.name)
@status = shell_out_with_systems_locale!("ip", "-json", "addr", "list")
json = JSON.parse @status.stdout
interfaces = json.each_with_object({}) { |iface, acc| acc[iface["ifname"]] = iface }
iface = driver_name
interface = interfaces.fetch(iface, nil)
if !interface.nil?
current_resource.target(new_resource.target)
current_resource.device(new_resource.device)
current_resource.hwaddr(interface["address"])
current_resource.mtu(interface["mtu"])
address = interface["addr_info"].select { |i| i["label"] == new_resource.device && i["family"] == new_resource.family }.first
return current_resource if address.nil?
netmask = get_netmask(address["prefixlen"])
current_resource.inet_addr(address["local"])
current_resource.bcast(address["broadcast"])
current_resource.mask(netmask)
end
current_resource
end
def action_add
unit = generate_network_unit
converge_by "Creating network unit: #{unit_name}" do
declare_resource(:directory, unit_dir) do
mode "0755"
owner "root"
group "root"
end
declare_resource(:file, ::File.join(unit_dir, unit_name)) do
content unit
owner "root"
group "root"
mode "0644"
# It appears that systemd-analyze doesn't currently support network units
# verify :systemd_unit
end
end
end
def self.systemd_unit_enabled?(unit)
systemctl_execute!("is-enabled", unit).exitstatus == 0
end
def self.systemctl_execute!(action, unit)
systemctl_path = which("systemctl")
systemctl_cmd = "#{systemctl_path} --system"
shell_out_with_systems_locale!("#{systemctl_cmd} #{action} #{Shellwords.escape(unit)}")
end
private
def unit_dir
"/etc/systemd/network"
end
def generate_network_unit
unit = {
"Match" => {
"Name" => driver_name,
},
"Address" => {
"Label" => new_resource.device,
},
}
if new_resource.bootproto == "dhcp"
unit["Network"] ||= {}
unit["Network"]["DHCP"] = "YES"
return unit
end
unit["Address"]["Address"] = target
if new_resource.hwaddr
unit["Link"] ||= {}
unit["Link"]["MACAddress"] = new_resource.hwaddr
end
if new_resource.mtu
unit["Link"] ||= {}
unit["Link"]["MTUBytes"] = new_resource.mtu
end
to_systemd_unit(unit)
end
def to_systemd_unit(content)
case content
when Hash
IniParse.gen do |doc|
content.each_pair do |sect, opts|
doc.section(sect) do |section|
opts.each_pair do |opt, val|
section.option(opt, val)
end
end
end
end.to_s
else
content.to_s
end
end
def target
prefix = mask_to_prefix(new_resource.mask)
"#{new_resource.target}/#{prefix}"
end
def safe_device_name
new_resource.device.tr(":", "_")
end
def unit_name
"01-chef-#{driver_name}.network"
end
def mask_to_prefix(mask)
return 32 if mask.nil?
mask_int = IPAddr.new(mask).to_i
n = IPAddr::IN4MASK ^ mask_int
i = 32
while n > 0
n >>= 1
i -= 1
end
i
end
def prefix_to_mask(prefix)
mask_int = ((IPAddr::IN4MASK >> prefix) << prefix)
(0..3).map { |i| (mask_int >> (24 - 8 * i)) & 0xff }.join(".")
end
def driver_name
new_resource.device.split(":")[0]
end
end
end
end
end
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