metasploitable3/chef/cookbooks/apt/libraries/helpers.rb

50 lines
1.3 KiB
Ruby
Raw Normal View History

#
# Cookbook:: apt
# Library:: helpers
#
# Copyright:: 2013-2017, Chef Software, Inc.
#
# 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.
#
module Apt
# Helpers for apt
module Helpers
# Determines if apt is installed on a system.
#
# @return [Boolean]
def apt_installed?
!which('apt-get').nil?
end
# Finds a command in $PATH
#
# @return [String, nil]
def which(cmd)
ENV['PATH'] = '' if ENV['PATH'].nil?
paths = (ENV['PATH'].split(::File::PATH_SEPARATOR) + %w(/bin /usr/bin /sbin /usr/sbin))
paths.each do |path|
possible = File.join(path, cmd)
return possible if File.executable?(possible)
end
nil
end
end
end
Chef::Recipe.send(:include, ::Apt::Helpers)
Chef::Resource.send(:include, ::Apt::Helpers)
Chef::Provider.send(:include, ::Apt::Helpers)