certmaster/minion/modules/command.py

   1 # Copyright 2007, Red Hat, Inc
   2 # James Bowes <jbowes@redhat.com>
   3 # Steve 'Ashcrow' Milner <smilner@redhat.com>
   4 #
   5 # This software may be freely redistributed under the terms of the GNU
   6 # general public license.
   7 #
   8 # You should have received a copy of the GNU General Public License
   9 # along with this program; if not, write to the Free Software
  10 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  11
  12 """
  13 Abitrary command execution module for func.
  14 """
  15
  16 import func_module
  17 import sub_process
  18
  19 class Command(func_module.FuncModule):
  20
  21     version = "0.0.1"
  22     api_version = "0.0.1"
  23     description = "Works with shell commands."
  24
  25     def run(self, command):
  26         """
  27         Runs a command, returning the return code, stdout, and stderr as a tuple.
  28         NOT FOR USE WITH INTERACTIVE COMMANDS.
  29         """
  30
  31         cmdref = sub_process.Popen(command.split(), stdout=sub_process.PIPE,
  32                                    stderr=sub_process.PIPE, shell=False)
  33         data = cmdref.communicate()
  34         return (cmdref.returncode, data[0], data[1])
  35
  36     def exists(self, command):
  37         """
  38         Checks to see if a command exists on the target system(s).
  39         """
  40         import os
  41
  42         if os.access(command, os.X_OK):
  43             return True
  44         return False