/usr/lib/ruby/vendor_ruby/ohai/plugins/ruby.rb is in ohai 6.14.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, 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.
#
provides "languages/ruby"
require_plugin "languages"
def run_ruby(command)
cmd = "ruby -e \"require 'rbconfig'; #{command}\""
status, stdout, stderr = run_command(:no_status_check => true, :command => cmd)
stdout.strip
end
languages[:ruby] = Mash.new
values = {
:platform => "RUBY_PLATFORM",
:version => "RUBY_VERSION",
:release_date => "RUBY_RELEASE_DATE",
:target => "::Config::CONFIG['target']",
:target_cpu => "::Config::CONFIG['target_cpu']",
:target_vendor => "::Config::CONFIG['target_vendor']",
:target_os => "::Config::CONFIG['target_os']",
:host => "::Config::CONFIG['host']",
:host_cpu => "::Config::CONFIG['host_cpu']",
:host_os => "::Config::CONFIG['host_os']",
:host_vendor => "::Config::CONFIG['host_vendor']",
:bin_dir => "::Config::CONFIG['bindir']",
:ruby_bin => "::File.join(::Config::CONFIG['bindir'], ::Config::CONFIG['ruby_install_name'])"
}
# Create a query string from above hash
env_string = ""
values.keys.each do |v|
env_string << "#{v}=\#{#{values[v]}},"
end
# Query the system ruby
result = run_ruby "puts %Q(#{env_string})"
# Parse results to plugin hash
result.split(',').each do |entry|
key, value = entry.split('=')
languages[:ruby][key.to_sym] = value || ""
end
# Perform one more (conditional) query
bin_dir = languages[:ruby][:bin_dir]
ruby_bin = languages[:ruby][:ruby_bin]
gem_binaries = [
run_ruby("require 'rubygems'; puts ::Gem.default_exec_format % 'gem'"),
"gem"
].map {|bin| ::File.join(bin_dir, bin)}
gem_binary = gem_binaries.find {|bin| ::File.exists? bin }
if gem_binary
languages[:ruby][:gems_dir] = run_ruby "puts %x{#{ruby_bin} #{gem_binary} env gemdir}.chomp!"
languages[:ruby][:gem_bin] = gem_binary
end
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