120 lines
3.6 KiB
Python
120 lines
3.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Cloudbase Solutions Srl
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import re
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import tempfile
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import uuid
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import email
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import tempfile
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import os
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import errno
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from cloudbaseinit.openstack.common import cfg
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from cloudbaseinit.openstack.common import log as logging
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from cloudbaseinit.osutils.factory import *
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from cloudbaseinit.plugins.base import *
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LOG = logging.getLogger(__name__)
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opts = [
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cfg.StrOpt('user_data_folder', default='cloud-data',
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help='Specifies a folder to store multipart data files.'),
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]
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CONF = cfg.CONF
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CONF.register_opts(opts)
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class UserDataPlugin():
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def __init__(self, cfg=CONF):
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self.cfg = cfg
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self.msg = None
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return
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def execute(self, service):
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user_data = service.get_user_data('openstack')
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if not user_data:
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return False
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LOG.debug('User data content:\n%s' % user_data)
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if user_data.startswith('Content-Type: multipart'):
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for part in self.parse_MIME(user_data):
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self.process_part(part)
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else:
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self.handle(user_data)
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return
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def process_part(self, part):
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if part.get_filename() == 'cfn-userdata':
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self.handle(part.get_payload())
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return
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def parse_MIME(self, user_data):
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folder = self.cfg.user_data_folder
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self.create_folder(folder)
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self.msg = email.message_from_string(user_data)
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return self.msg.walk()
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def create_folder(self, folder):
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try:
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os.mkdir(folder)
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except os.OSError, e:
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if e.errno != errno.EEXIST:
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raise e
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return
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def handle(self, user_data):
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osutils = OSUtilsFactory().get_os_utils()
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target_path = os.path.join(tempfile.gettempdir(), str(uuid.uuid4()))
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if re.search(r'^rem cmd\s', user_data, re.I):
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target_path += '.cmd'
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args = [target_path]
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shell = True
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elif re.search(r'^#!', user_data, re.I):
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target_path += '.sh'
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args = ['bash.exe', target_path]
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shell = False
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elif re.search(r'^#ps1\s', user_data, re.I):
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target_path += '.ps1'
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args = ['powershell.exe', '-ExecutionPolicy', 'RemoteSigned',
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'-NonInteractive', target_path]
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shell = False
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else:
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# Unsupported
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LOG.warning('Unsupported user_data format')
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return False
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try:
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with open(target_path, 'wb') as f:
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f.write(user_data)
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(out, err, ret_val) = osutils.execute_process(args, shell)
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LOG.info('User_data script ended with return code: %d' % ret_val)
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LOG.debug('User_data stdout:\n%s' % out)
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LOG.debug('User_data stderr:\n%s' % err)
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except Exception, ex:
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LOG.warning('An error occurred during user_data execution: \'%s\'' % ex)
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finally:
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if os.path.exists(target_path):
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os.remove(target_path)
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return False
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