api: don't force root on os_env

lib/resources/os_env.rb

@@ -11,15 +11,16 @@
 #   its(:split) { should_not include('.') }
 # end
 
+require 'utils/simpleconfig'
+
 class OsEnv < Inspec.resource(1)
   name 'os_env'
 
   attr_reader :content
-  def initialize(env)
+  def initialize(env = nil)
     @osenv = env
-    cmd = inspec.command("su - root -c 'echo $#{env}'")
-    @content = cmd.stdout.chomp
-    @content = nil if cmd.exit_status != 0
+    @content = nil
+    @content = params[env] unless env.nil?
   end
 
   def split
@@ -29,6 +30,24 @@ class OsEnv < Inspec.resource(1)
   end
 
   def to_s
-    "Environment Variable #{@osenv}"
+    if @osenv.nil?
+      'Environment variables'
+    else
+      "Environment variable #{@osenv}"
+    end
+  end
+
+  private
+
+  def params
+    return @params if defined? @params
+    out = inspec.command('env')
+    out = inspec.command('printenv') unless out.exit_status == 0
+    unless out.exit_status == 0
+      skip_resource "Can't read environment variables on #{os[:family]}. "\
+        "Tried `env` and `printenv` which returned #{out.exit_status}"
+    end
+
+    @params = SimpleConfig.new(out.stdout).params
   end
 end

test/helper.rb

@@ -108,7 +108,7 @@ class MockLoader
       'type win_secpol.cfg' => cmd.call('secedit-export'),
       'secedit /export /cfg win_secpol.cfg' => cmd.call('success'),
       'del win_secpol.cfg' => cmd.call('success'),
-      'su - root -c \'echo $PATH\'' => cmd.call('PATH'),
+      'env' => cmd.call('env'),
       '(Get-Item \'Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Schedule\').GetValue(\'Start\')' => cmd.call('reg_schedule'),
       'Auditpol /get /subcategory:\'User Account Management\' /r' => cmd.call('auditpol'),
       '/sbin/auditctl -l' => cmd.call('auditctl'),

test/unit/mock/cmd/PATH

@@ -1 +0,0 @@
-/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

test/unit/mock/cmd/env

@@ -0,0 +1 @@
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin