149 lines
5.2 KiB
Python
149 lines
5.2 KiB
Python
# (c) 2012, Daniel Hokka Zakrisson <daniel@hozac.com>
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# (c) 2013, Javier Candeira <javier@candeira.com>
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# (c) 2013, Maykel Moya <mmoya@speedyrails.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 errno
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import string
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import random
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from string import ascii_letters, digits
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from ansible import constants as C
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from ansible.errors import AnsibleError
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from ansible.plugins.lookup import LookupBase
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from ansible.utils.encrypt import do_encrypt
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from ansible.utils.path import makedirs_safe
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DEFAULT_LENGTH = 20
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class LookupModule(LookupBase):
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def random_password(self, length=DEFAULT_LENGTH, chars=C.DEFAULT_PASSWORD_CHARS):
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'''
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Return a random password string of length containing only chars.
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NOTE: this was moved from the old ansible utils code, as nothing
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else appeared to use it.
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'''
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password = []
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while len(password) < length:
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new_char = os.urandom(1)
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if new_char in chars:
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password.append(new_char)
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return ''.join(password)
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def random_salt(self):
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salt_chars = ascii_letters + digits + './'
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return self.random_password(length=8, chars=salt_chars)
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def run(self, terms, variables, **kwargs):
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ret = []
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if not isinstance(terms, list):
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terms = [ terms ]
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for term in terms:
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# you can't have escaped spaces in yor pathname
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params = term.split()
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relpath = params[0]
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paramvals = {
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'length': DEFAULT_LENGTH,
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'encrypt': None,
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'chars': ['ascii_letters','digits',".,:-_"],
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}
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# get non-default parameters if specified
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try:
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for param in params[1:]:
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name, value = param.split('=')
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assert(name in paramvals)
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if name == 'length':
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paramvals[name] = int(value)
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elif name == 'chars':
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use_chars=[]
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if ",," in value:
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use_chars.append(',')
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use_chars.extend(value.replace(',,',',').split(','))
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paramvals['chars'] = use_chars
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else:
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paramvals[name] = value
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except (ValueError, AssertionError) as e:
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raise AnsibleError(e)
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length = paramvals['length']
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encrypt = paramvals['encrypt']
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use_chars = paramvals['chars']
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# get password or create it if file doesn't exist
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path = self._loader.path_dwim(relpath)
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if not os.path.exists(path):
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pathdir = os.path.dirname(path)
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try:
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makedirs_safe(pathdir, mode=0o700)
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except OSError as e:
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raise AnsibleError("cannot create the path for the password lookup: %s (error was %s)" % (pathdir, str(e)))
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chars = "".join([getattr(string,c,c) for c in use_chars]).replace('"','').replace("'",'')
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password = ''.join(random.choice(chars) for _ in range(length))
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if encrypt is not None:
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salt = self.random_salt()
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content = '%s salt=%s' % (password, salt)
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else:
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content = password
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with open(path, 'w') as f:
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os.chmod(path, 0o600)
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f.write(content + '\n')
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else:
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content = open(path).read().rstrip()
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sep = content.find(' ')
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if sep >= 0:
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password = content[:sep]
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salt = content[sep+1:].split('=')[1]
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else:
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password = content
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salt = None
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# crypt requested, add salt if missing
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if (encrypt is not None and not salt):
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salt = self.random_salt()
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content = '%s salt=%s' % (password, salt)
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with open(path, 'w') as f:
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os.chmod(path, 0o600)
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f.write(content + '\n')
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# crypt not requested, remove salt if present
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elif (encrypt is None and salt):
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with open(path, 'w') as f:
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os.chmod(path, 0o600)
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f.write(password + '\n')
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if encrypt:
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password = do_encrypt(password, encrypt, salt=salt)
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ret.append(password)
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return ret
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