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#
# Author:: Jason K. Jackson (jasonjackson@gmail.com)
# Copyright:: Copyright (c) 2009 Jason K. Jackson
# 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 'chef/log'
require 'chef/mixin/command'
require 'chef/provider'
require 'chef/resource/file'
require 'chef/exceptions'
require 'erb'
# Recipe example:
#
# int = {Hash with your network settings...}
#
# ifconfig int['ip'] do
# ignore_failure true
# device int['dev']
# mask int['mask']
# gateway int['gateway']
# mtu int['mtu']
# end
class Chef
class Provider
class Ifconfig < Chef::Provider
include Chef::Mixin::Command
attr_accessor :config_template
attr_accessor :config_path
def initialize(new_resource, run_context)
super(new_resource, run_context)
@config_template = nil
@config_path = nil
end
def whyrun_supported?
true
end
def load_current_resource
@current_resource = Chef::Resource::Ifconfig.new(@new_resource.name)
@ifconfig_success = true
@interfaces = {}
@status = popen4("ifconfig") do |pid, stdin, stdout, stderr|
stdout.each do |line|
if !line[0..9].strip.empty?
@int_name = line[0..9].strip
@interfaces[@int_name] = {"hwaddr" => (line =~ /(HWaddr)/ ? ($') : "nil").strip.chomp }
else
@interfaces[@int_name]["inet_addr"] = (line =~ /inet addr:(\S+)/ ? ($1) : "nil") if line =~ /inet addr:/
@interfaces[@int_name]["bcast"] = (line =~ /Bcast:(\S+)/ ? ($1) : "nil") if line =~ /Bcast:/
@interfaces[@int_name]["mask"] = (line =~ /Mask:(\S+)/ ? ($1) : "nil") if line =~ /Mask:/
@interfaces[@int_name]["mtu"] = (line =~ /MTU:(\S+)/ ? ($1) : "nil") if line =~ /MTU:/
@interfaces[@int_name]["metric"] = (line =~ /Metric:(\S+)/ ? ($1) : "nil") if line =~ /Metric:/
end
if @interfaces.has_key?(@new_resource.device)
@interface = @interfaces.fetch(@new_resource.device)
@current_resource.target(@new_resource.target)
@current_resource.device(@new_resource.device)
@current_resource.inet_addr(@interface["inet_addr"])
@current_resource.hwaddr(@interface["hwaddr"])
@current_resource.bcast(@interface["bcast"])
@current_resource.mask(@interface["mask"])
@current_resource.mtu(@interface["mtu"])
@current_resource.metric(@interface["metric"])
end
end
end
@current_resource
end
def define_resource_requirements
requirements.assert(:all_actions) do |a|
a.assertion { @status.exitstatus == 0 }
a.failure_message Chef::Exceptions::Ifconfig, "ifconfig failed - #{@status.inspect}!"
# no whyrun - if the base ifconfig used in load_current_resource fails
# there's no reasonable action that could have been taken in the course of
# a chef run to fix it.
end
end
def action_add
# check to see if load_current_resource found interface in ifconfig
unless @current_resource.inet_addr
unless @new_resource.device == loopback_device
command = add_command
converge_by ("run #{command} to add #{@new_resource}") do
run_command(
:command => command
)
Chef::Log.info("#{@new_resource} added")
end
end
end
# Write out the config files
generate_config
end
def action_enable
# check to see if load_current_resource found ifconfig
# enables, but does not manage config files
unless @current_resource.inet_addr
unless @new_resource.device == loopback_device
command = enable_command
converge_by ("run #{command} to enable #{@new_resource}") do
run_command(
:command => command
)
Chef::Log.info("#{@new_resource} enabled")
end
end
end
end
def action_delete
# check to see if load_current_resource found the interface
if @current_resource.device
command = delete_command
converge_by ("run #{command} to delete #{@new_resource}") do
run_command(
:command => command
)
Chef::Log.info("#{@new_resource} deleted")
end
else
Chef::Log.debug("#{@new_resource} does not exist - nothing to do")
end
delete_config
end
def action_disable
# check to see if load_current_resource found the interface
# disables, but leaves config files in place.
if @current_resource.device
command = disable_command
converge_by ("run #{command} to disable #{@new_resource}") do
run_command(
:command => command
)
Chef::Log.info("#{@new_resource} disabled")
end
else
Chef::Log.debug("#{@new_resource} does not exist - nothing to do")
end
end
def can_generate_config?
! @config_template.nil? and ! @config_path.nil?
end
def resource_for_config(path)
Chef::Resource::File.new(path, run_context)
end
def generate_config
return unless can_generate_config?
b = binding
template = ::ERB.new(@config_template)
config = resource_for_config(@config_path)
config.content(template.result(b))
config.run_action(:create)
@new_resource.updated_by_last_action(true) if config.updated?
end
def delete_config
return unless can_generate_config?
config = resource_for_config(@config_path)
config.run_action(:delete)
@new_resource.updated_by_last_action(true) if config.updated?
end
private
def add_command
command = "ifconfig #{@new_resource.device} #{@new_resource.name}"
command << " netmask #{@new_resource.mask}" if @new_resource.mask
command << " metric #{@new_resource.metric}" if @new_resource.metric
command << " mtu #{@new_resource.mtu}" if @new_resource.mtu
command
end
def enable_command
command = "ifconfig #{@new_resource.device} #{@new_resource.name}"
command << " netmask #{@new_resource.mask}" if @new_resource.mask
command << " metric #{@new_resource.metric}" if @new_resource.metric
command << " mtu #{@new_resource.mtu}" if @new_resource.mtu
command
end
def disable_command
"ifconfig #{@new_resource.device} down"
end
def delete_command
"ifconfig #{@new_resource.device} down"
end
def loopback_device
'lo'
end
end
end
end
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