63 lines
2.2 KiB
Python
63 lines
2.2 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import crypt
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import random
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import string
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from oslo_log import log
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from ironic_python_agent.extensions import base
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LOG = log.getLogger()
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PASSWORD_FILE = '/etc/ipa-rescue-config/ipa-rescue-password'
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class RescueExtension(base.BaseAgentExtension):
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def make_salt(self):
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"""Generate a random salt for hashing the rescue password.
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Salt should be a two-character string from the set [a-zA-Z0-9].
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:returns: a valid salt for use with crypt.crypt
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"""
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allowed_chars = string.ascii_letters + string.digits
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return random.choice(allowed_chars) + random.choice(allowed_chars)
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def write_rescue_password(self, rescue_password=""):
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"""Write rescue password to a file for use after IPA exits.
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:param rescue_password: Rescue password.
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"""
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LOG.debug('Writing hashed rescue password to %s', PASSWORD_FILE)
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salt = self.make_salt()
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hashed_password = crypt.crypt(rescue_password, salt)
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try:
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with open(PASSWORD_FILE, 'w') as f:
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f.write(hashed_password)
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except IOError as e:
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msg = ("Rescue Operation failed when writing the hashed rescue "
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"password to the password file. Error %s") % e
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LOG.exception(msg)
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raise IOError(msg)
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@base.sync_command('finalize_rescue')
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def finalize_rescue(self, rescue_password=""):
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"""Sets the rescue password for the rescue user."""
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self.write_rescue_password(rescue_password)
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# IPA will terminate after the result of finalize_rescue is returned to
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# ironic to avoid exposing the IPA API to a tenant or public network
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self.agent.serve_api = False
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return
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