mirror of
https://github.com/ansible-collections/community.general.git
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132 lines
4.8 KiB
Python
132 lines
4.8 KiB
Python
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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import stat
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import time
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import warnings
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PASSLIB_AVAILABLE = False
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try:
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import passlib.hash
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PASSLIB_AVAILABLE = True
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except:
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pass
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try:
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from __main__ import display
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except ImportError:
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from ansible.utils.display import Display
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display = Display()
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KEYCZAR_AVAILABLE=False
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try:
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try:
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# some versions of pycrypto may not have this?
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from Crypto.pct_warnings import PowmInsecureWarning
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except ImportError:
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PowmInsecureWarning = RuntimeWarning
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with warnings.catch_warnings(record=True) as warning_handler:
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warnings.simplefilter("error", PowmInsecureWarning)
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try:
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import keyczar.errors as key_errors
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from keyczar.keys import AesKey
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except PowmInsecureWarning:
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display.system_warning(
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"The version of gmp you have installed has a known issue regarding " + \
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"timing vulnerabilities when used with pycrypto. " + \
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"If possible, you should update it (i.e. yum update gmp)."
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)
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warnings.resetwarnings()
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warnings.simplefilter("ignore")
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import keyczar.errors as key_errors
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from keyczar.keys import AesKey
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KEYCZAR_AVAILABLE=True
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except ImportError:
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pass
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from ansible import constants as C
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from ansible.errors import AnsibleError
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__all__ = ['do_encrypt']
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def do_encrypt(result, encrypt, salt_size=None, salt=None):
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if PASSLIB_AVAILABLE:
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try:
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crypt = getattr(passlib.hash, encrypt)
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except:
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raise AnsibleError("passlib does not support '%s' algorithm" % encrypt)
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if salt_size:
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result = crypt.encrypt(result, salt_size=salt_size)
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elif salt:
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result = crypt.encrypt(result, salt=salt)
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else:
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result = crypt.encrypt(result)
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else:
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raise AnsibleError("passlib must be installed to encrypt vars_prompt values")
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return result
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def key_for_hostname(hostname):
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# fireball mode is an implementation of ansible firing up zeromq via SSH
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# to use no persistent daemons or key management
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if not KEYCZAR_AVAILABLE:
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raise AnsibleError("python-keyczar must be installed on the control machine to use accelerated modes")
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key_path = os.path.expanduser(C.ACCELERATE_KEYS_DIR)
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if not os.path.exists(key_path):
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os.makedirs(key_path, mode=0o700)
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os.chmod(key_path, int(C.ACCELERATE_KEYS_DIR_PERMS, 8))
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elif not os.path.isdir(key_path):
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raise AnsibleError('ACCELERATE_KEYS_DIR is not a directory.')
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if stat.S_IMODE(os.stat(key_path).st_mode) != int(C.ACCELERATE_KEYS_DIR_PERMS, 8):
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raise AnsibleError('Incorrect permissions on the private key directory. Use `chmod 0%o %s` to correct this issue, and make sure any of the keys files contained within that directory are set to 0%o' % (int(C.ACCELERATE_KEYS_DIR_PERMS, 8), C.ACCELERATE_KEYS_DIR, int(C.ACCELERATE_KEYS_FILE_PERMS, 8)))
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key_path = os.path.join(key_path, hostname)
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# use new AES keys every 2 hours, which means fireball must not allow running for longer either
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if not os.path.exists(key_path) or (time.time() - os.path.getmtime(key_path) > 60*60*2):
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key = AesKey.Generate(size=256)
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fd = os.open(key_path, os.O_WRONLY | os.O_CREAT, int(C.ACCELERATE_KEYS_FILE_PERMS, 8))
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fh = os.fdopen(fd, 'w')
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fh.write(str(key))
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fh.close()
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return key
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else:
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if stat.S_IMODE(os.stat(key_path).st_mode) != int(C.ACCELERATE_KEYS_FILE_PERMS, 8):
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raise AnsibleError('Incorrect permissions on the key file for this host. Use `chmod 0%o %s` to correct this issue.' % (int(C.ACCELERATE_KEYS_FILE_PERMS, 8), key_path))
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fh = open(key_path)
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key = AesKey.Read(fh.read())
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fh.close()
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return key
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def keyczar_encrypt(key, msg):
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return key.Encrypt(msg.encode('utf-8'))
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def keyczar_decrypt(key, msg):
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try:
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return key.Decrypt(msg)
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except key_errors.InvalidSignatureError:
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raise AnsibleError("decryption failed")
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