ironic-python-agent/ironic_python_agent/extensions/rescue.py

64 lines
2.5 KiB
Python

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import crypt
from oslo_log import log
from ironic_python_agent.extensions import base
LOG = log.getLogger()
PASSWORD_FILE = '/etc/ipa-rescue-config/ipa-rescue-password'
class RescueExtension(base.BaseAgentExtension):
def write_rescue_password(self, rescue_password="", hashed=False):
"""Write rescue password to a file for use after IPA exits.
:param rescue_password: Rescue password.
:param hashed: Boolean default False indicating if the password
being provided is hashed or not. This will be changed
in a future version of ironic.
"""
# DEPRECATED(TheJulia): In a future version of the ramdisk, we need
# change the default such that a password is the default and that
# if it is not, then the operation fails. Providing a default and
# an override now that matches the present state allows us to
# maintain our n-1, n, and n+1 theoretical support. Change
# in the V or W cycles.
LOG.debug('Writing hashed rescue password to %s', PASSWORD_FILE)
password = str(rescue_password)
hashed_password = None
if hashed:
hashed_password = password
else:
hashed_password = crypt.crypt(rescue_password)
try:
with open(PASSWORD_FILE, 'w') as f:
f.write(hashed_password)
except IOError as e:
msg = ("Rescue Operation failed when writing the hashed rescue "
"password to the password file. Error %s") % e
LOG.exception(msg)
raise IOError(msg)
@base.sync_command('finalize_rescue')
def finalize_rescue(self, rescue_password="", hashed=False):
"""Sets the rescue password for the rescue user."""
self.write_rescue_password(rescue_password, hashed)
# IPA will terminate after the result of finalize_rescue is returned to
# ironic to avoid exposing the IPA API to a tenant or public network
self.agent.serve_api = False
return