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f9a36962bd
This module aims to allow a user to manage the lifecycle of OpenSSL
private keys. Internally it relies on the pyOpenSSL python library
to interact with openssl.
A user is able to specify :
* key size (via `size` parameter)
* key algorithm (via `type` parameter)
* key location (via `path` parameter)
The most simple use case is:
```
- name: Generate ansible.com.pem SSL private key
openssl_privatekey: name=ansible.com.pem
path=/etc/ssl/private
```
A user can speficy more settings:
```
- name: Generate ansible.com.pem SSL private key
openssl_privatekey: name=ansible.com.pem
path=/etc/ssl/private
size=2048
type=DSA
```
A user can also force the regeneration of an SSL key:
```
- name: Generate ansible.com.pem SSL private key
openssl_privatekey: name=ansible.com.pem
path=/etc/ssl/private
force=true
```
247 lines
7.2 KiB
Python
247 lines
7.2 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2016, Yanis Guenane <yanis+ansible@guenane.org>
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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 ansible.module_utils.basic import *
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try:
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from OpenSSL import crypto
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except ImportError:
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pyopenssl_found = False
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else:
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pyopenssl_found = True
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import os
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DOCUMENTATION = '''
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---
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module: openssl_privatekey
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author: "Yanis Guenane (@Spredzy)"
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version_added: "2.3"
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short_description: Generate OpenSSL private keys.
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description:
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- "This module allows one to (re)generate OpenSSL private keys. It uses
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the pyOpenSSL python library to interact with openssl. One can generate
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either RSA or DSA private keys. Keys are generated in PEM format."
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requirements:
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- "python-pyOpenSSL"
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options:
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state:
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required: false
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default: "present"
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choices: [ present, absent ]
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description:
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- Whether the private key should exist or not, taking action if the state is different from what is stated.
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size:
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required: false
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default: 4096
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description:
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- Size (in bits) of the TLS/SSL key to generate
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type:
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required: false
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default: "RSA"
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choices: [ RSA, DSA ]
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description:
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- The algorithm used to generate the TLS/SSL private key
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force:
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required: false
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default: False
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choices: [ True, False ]
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description:
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- Should the key be regenerated even it it already exists
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path:
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required: true
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description:
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- Name of the file in which the generated TLS/SSL private key will be written. It will have 0600 mode.
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'''
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EXAMPLES = '''
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# Generate an OpenSSL private key with the default values (4096 bits, RSA)
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# and no public key
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- openssl_privatekey: path=/etc/ssl/private/ansible.com.pem
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# Generate an OpenSSL private key with a different size (2048 bits)
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- openssl_privatekey: path=/etc/ssl/private/ansible.com.pem size=2048
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# Force regenerate an OpenSSL private key if it already exists
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- openssl_privatekey: path=/etc/ssl/private/ansible.com.pem force=True
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# Generate an OpenSSL private key with a different algorithm (DSA)
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- openssl_privatekey: path=/etc/ssl/private/ansible.com.pem type=DSA
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'''
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RETURN = '''
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size:
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description: Size (in bits) of the TLS/SSL private key
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returned:
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- changed
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- success
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type: integer
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sample: 4096
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type:
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description: Algorithm used to generate the TLS/SSL private key
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returned:
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- changed
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- success
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type: string
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sample: RSA
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filename:
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description: Path to the generated TLS/SSL private key file
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returned:
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- changed
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- success
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type: string
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sample: /etc/ssl/private/ansible.com.pem
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'''
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class PrivateKeyError(Exception):
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pass
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class PrivateKey(object):
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def __init__(self, module):
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self.size = module.params['size']
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self.state = module.params['state']
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self.name = os.path.basename(module.params['path'])
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self.type = module.params['type']
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self.force = module.params['force']
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self.path = module.params['path']
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self.mode = module.params['mode']
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self.changed = True
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self.check_mode = module.check_mode
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def generate(self, module):
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"""Generate a keypair."""
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if not os.path.exists(self.path) or self.force:
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self.privatekey = crypto.PKey()
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if self.type == 'RSA':
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crypto_type = crypto.TYPE_RSA
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else:
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crypto_type = crypto.TYPE_DSA
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try:
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self.privatekey.generate_key(crypto_type, self.size)
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except (TypeError, ValueError):
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raise PrivateKeyError(get_exception())
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try:
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privatekey_file = os.open(self.path,
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os.O_WRONLY | os.O_CREAT | os.O_TRUNC,
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self.mode)
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os.write(privatekey_file, crypto.dump_privatekey(crypto.FILETYPE_PEM, self.privatekey))
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os.close(privatekey_file)
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except IOError:
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self.remove()
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raise PrivateKeyError(get_exception())
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else:
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self.changed = False
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file_args = module.load_file_common_arguments(module.params)
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if module.set_fs_attributes_if_different(file_args, False):
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self.changed = True
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def remove(self):
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"""Remove the private key from the filesystem."""
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try:
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os.remove(self.path)
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except OSError:
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e = get_exception()
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if e.errno != errno.ENOENT:
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raise PrivateKeyError(e)
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else:
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self.changed = False
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def dump(self):
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"""Serialize the object into a dictionnary."""
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result = {
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'size': self.size,
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'type': self.type,
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'filename': self.path,
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'changed': self.changed,
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}
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return result
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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state=dict(default='present', choices=['present', 'absent'], type='str'),
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size=dict(default=4096, type='int'),
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type=dict(default='RSA', choices=['RSA', 'DSA'], type='str'),
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force=dict(default=False, type='bool'),
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path=dict(required=True, type='path'),
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),
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supports_check_mode = True,
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add_file_common_args = True,
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)
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if not pyopenssl_found:
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module.fail_json(msg='the python pyOpenSSL module is required')
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path = module.params['path']
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base_dir = os.path.dirname(module.params['path'])
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if not os.path.isdir(base_dir):
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module.fail_json(name=base_dir, msg='The directory %s does not exist or the file is not a directory' % base_dir)
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if not module.params['mode']:
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module.params['mode'] = 0600
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private_key = PrivateKey(module)
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if private_key.state == 'present':
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if module.check_mode:
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result = private_key.dump()
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result['changed'] = module.params['force'] or not os.path.exists(path)
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module.exit_json(**result)
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try:
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private_key.generate(module)
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except PrivateKeyError:
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e = get_exception()
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module.fail_json(msg=str(e))
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else:
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if module.check_mode:
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result = private_key.dump()
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result['changed'] = os.path.exists(path)
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module.exit_json(**result)
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try:
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private_key.remove()
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except PrivateKeyError:
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e = get_exception()
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module.fail_json(msg=str(e))
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result = private_key.dump()
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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