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""" Invoke an external command to verify file contents """
import os
import sys
import shlex
from Bcfg2.Utils import Executor
from Bcfg2.Server.Plugin import PluginExecutionError
from Bcfg2.Server.Plugins.Cfg import CfgVerifier, CfgVerificationError
class CfgExternalCommandVerifier(CfgVerifier):
""" Invoke an external script to verify
:ref:`server-plugins-generators-cfg` file contents """
#: Handle :file:`:test` files
__basenames__ = [':test']
def __init__(self, name, specific):
CfgVerifier.__init__(self, name, specific)
self.cmd = []
self.exc = Executor(timeout=30)
__init__.__doc__ = CfgVerifier.__init__.__doc__
def verify_entry(self, entry, metadata, data):
try:
result = self.exc.run(self.cmd, inputdata=data)
if not result.success:
raise CfgVerificationError(result.error)
except OSError:
raise CfgVerificationError(sys.exc_info()[1])
verify_entry.__doc__ = CfgVerifier.verify_entry.__doc__
def handle_event(self, event):
CfgVerifier.handle_event(self, event)
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__
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