Source code for Bcfg2.Server.Plugins.Cfg.CfgExternalCommandVerifier
import os
import sys
import shlex
from Bcfg2.Server.Plugin import PluginExecutionError
from subprocess import Popen, PIPE
from Bcfg2.Server.Plugins.Cfg import CfgVerifier, CfgVerificationError
class CfgExternalCommandVerifier(CfgVerifier):
""" Invoke an external script to verify
[docs] :ref:`server-plugins-generators-cfg` file contents """
#: Handle :file:`:test` files
__basenames__ = [':test']
def __init__(self, name, specific, encoding):
CfgVerifier.__init__(self, name, specific, encoding)
self.cmd = []
__init__.__doc__ = CfgVerifier.__init__.__doc__
def verify_entry(self, entry, metadata, data):
try:
[docs] proc = Popen(self.cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
out, err = proc.communicate(input=data)
rv = proc.wait()
if rv != 0:
# pylint: disable=E1103
raise CfgVerificationError(err.strip() or out.strip() or
"Non-zero return value %s" % rv)
# pylint: enable=E1103
except CfgVerificationError:
raise
except:
err = sys.exc_info()[1]
raise CfgVerificationError("Error running external command "
"verifier: %s" % err)
verify_entry.__doc__ = CfgVerifier.verify_entry.__doc__
def handle_event(self, event):
CfgVerifier.handle_event(self, event)
[docs] if not self.data:
return
self.cmd = []
if not os.access(self.name, os.X_OK):
bangpath = self.data.splitlines()[0].strip()
if bangpath.startswith("#!"):
self.cmd.extend(shlex.split(bangpath[2:].strip()))
else:
raise PluginExecutionError("Cannot execute %s" % self.name)
self.cmd.append(self.name)
handle_event.__doc__ = CfgVerifier.handle_event.__doc__