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#--
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright 2010-2019, 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 "mixlib/shellout" unless defined?(Mixlib::ShellOut::DEFAULT_READ_TIMEOUT)
require "chef-utils/dsl/path_sanity" unless defined?(ChefUtils::DSL::PathSanity)
class Chef
module Mixin
module ShellOut
# PREFERRED APIS:
#
# all consumers should now call shell_out!/shell_out.
#
# the shell_out_compacted/shell_out_compacted! APIs are private but are intended for use
# in rspec tests, and should ideally always be used to make code refactoring that do not
# change behavior easier:
#
# allow(provider).to receive(:shell_out_compacted!).with("foo", "bar", "baz")
# provider.shell_out!("foo", [ "bar", nil, "baz"])
# provider.shell_out!(["foo", nil, "bar" ], ["baz"])
#
# note that shell_out_compacted also includes adding the magical timeout option to force
# people to setup expectations on that value explicitly. it does not include the default_env
# mangling in order to avoid users having to setup an expectation on anything other than
# setting `default_env: false` and allow us to make tweak to the default_env without breaking
# a thousand unit tests.
#
def shell_out(*args, **options)
options = options.dup
options = Chef::Mixin::ShellOut.maybe_add_timeout(self, options)
if options.empty?
shell_out_compacted(*Chef::Mixin::ShellOut.clean_array(*args))
else
shell_out_compacted(*Chef::Mixin::ShellOut.clean_array(*args), **options)
end
end
def shell_out!(*args, **options)
options = options.dup
options = Chef::Mixin::ShellOut.maybe_add_timeout(self, options)
if options.empty?
shell_out_compacted!(*Chef::Mixin::ShellOut.clean_array(*args))
else
shell_out_compacted!(*Chef::Mixin::ShellOut.clean_array(*args), **options)
end
end
# helper sugar for resources that support passing timeouts to shell_out
#
# module method to not pollute namespaces, but that means we need self injected as an arg
# @api private
def self.maybe_add_timeout(obj, options)
options = options.dup
# historically resources have not properly declared defaults on their timeouts, so a default default of 900s was enforced here
default_val = 900
return options if options.key?(:timeout)
# FIXME: need to nuke descendents tracker out of Chef::Provider so we can just define that class here without requiring the
# world, and then just use symbol lookup
if obj.class.ancestors.map(&:name).include?("Chef::Provider") && obj.respond_to?(:new_resource) && obj.new_resource.respond_to?(:timeout) && !options.key?(:timeout)
options[:timeout] = obj.new_resource.timeout ? obj.new_resource.timeout.to_f : default_val
end
options
end
# helper function to mangle options when `default_env` is true
#
# @api private
def self.apply_default_env(options)
options = options.dup
default_env = options.delete(:default_env)
default_env = true if default_env.nil?
if default_env
env_key = options.key?(:env) ? :env : :environment
options[env_key] = {
"LC_ALL" => Chef::Config[:internal_locale],
"LANGUAGE" => Chef::Config[:internal_locale],
"LANG" => Chef::Config[:internal_locale],
env_path => ChefUtils::DSL::PathSanity.sanitized_path,
}.update(options[env_key] || {})
end
options
end
private
# this SHOULD be used for setting up expectations in rspec, see banner comment at top.
#
# the private constraint is meant to avoid code calling this directly, rspec expectations are fine.
#
def shell_out_compacted(*args, **options)
options = Chef::Mixin::ShellOut.apply_default_env(options)
if options.empty?
Chef::Mixin::ShellOut.shell_out_command(*args)
else
Chef::Mixin::ShellOut.shell_out_command(*args, **options)
end
end
# this SHOULD be used for setting up expectations in rspec, see banner comment at top.
#
# the private constraint is meant to avoid code calling this directly, rspec expectations are fine.
#
def shell_out_compacted!(*args, **options)
options = Chef::Mixin::ShellOut.apply_default_env(options)
cmd = if options.empty?
Chef::Mixin::ShellOut.shell_out_command(*args)
else
Chef::Mixin::ShellOut.shell_out_command(*args, **options)
end
cmd.error!
cmd
end
# Helper for subclasses to reject nil out of an array. It allows
# using the array form of shell_out (which avoids the need to surround arguments with
# quote marks to deal with shells).
#
# Usage:
# shell_out!(*clean_array("useradd", universal_options, useradd_options, new_resource.username))
#
# universal_options and useradd_options can be nil, empty array, empty string, strings or arrays
# and the result makes sense.
#
# keeping this separate from shell_out!() makes it a bit easier to write expectations against the
# shell_out args and be able to omit nils and such in the tests (and to test that the nils are
# being rejected correctly).
#
# @param args [String] variable number of string arguments
# @return [Array] array of strings with nil and null string rejection
def self.clean_array(*args)
args.flatten.compact.map(&:to_s)
end
def self.transport_connection
Chef.run_context.transport_connection
end
def self.shell_out_command(*args, **options)
if Chef::Config.target_mode?
FakeShellOut.new(args, options, transport_connection.run_command(args.join(" "))) # FIXME: train should accept run_command(*args)
else
cmd = if options.empty?
Mixlib::ShellOut.new(*args)
else
Mixlib::ShellOut.new(*args, **options)
end
cmd.live_stream ||= io_for_live_stream
cmd.run_command
cmd
end
end
def self.io_for_live_stream
if STDOUT.tty? && !Chef::Config[:daemon] && Chef::Log.debug?
STDOUT
else
nil
end
end
def self.env_path
if ChefUtils.windows?
"Path"
else
"PATH"
end
end
class FakeShellOut
attr_reader :stdout, :stderr, :exitstatus, :status
def initialize(args, options, result)
@args = args
@options = options
@stdout = result.stdout
@stderr = result.stderr
@exitstatus = result.exit_status
@status = OpenStruct.new(success?: ( exitstatus == 0 ))
end
def error?
exitstatus != 0
end
def error!
raise Mixlib::ShellOut::ShellCommandFailed, "Unexpected exit status of #{exitstatus} running #{@args}" if error?
end
end
end
end
end
# Break circular dep
require_relative "../config"
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