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from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import hashlib
from passlib.utils.binary import Base64Engine, HASH64_CHARS, BCRYPT_CHARS
from ansible.module_utils._text import to_bytes, to_text
from ansible import errors
def _hash64_salt(seed, length):
h = hashlib.new('sha256')
e = Base64Engine(HASH64_CHARS)
h.update(to_bytes(seed, errors='surrogate_or_strict'))
return to_text(e.encode_bytes(h.digest()[0:length]))
def apr_md5_crypt_salt(seed):
''' generate salt for apr_md5_crypt algorithm based on seed-value '''
try:
return _hash64_salt(seed, 6)
except Exception as e:
raise errors.AnsibleFilterError("apr_md5_crypt_salt(): %s" % str(e))
def sha2_crypt_salt(seed):
''' generate salt for sha256/sha512_crypt algorithms based on seed-value '''
try:
return _hash64_salt(seed, 12)
except Exception as e:
raise errors.AnsibleFilterError("sha2_crypt_salt(): %s" % str(e))
def bcrypt_salt(seed):
''' generate salt for bcrypt algorithm based on seed-value '''
try:
h = hashlib.new('sha256')
e = Base64Engine(BCRYPT_CHARS)
h.update(to_bytes(seed, errors='surrogate_or_strict'))
return to_text(e.encode_bytes(h.digest()[0:16]))
except Exception as e:
raise errors.AnsibleFilterError("bcrypt_salt(): %s" % str(e))
class FilterModule(object):
''' crypto helpers '''
filter_map = {
'apr_md5_crypt_salt': apr_md5_crypt_salt,
'sha256_salt': sha2_crypt_salt,
'sha512_salt': sha2_crypt_salt,
'bcrypt_salt': bcrypt_salt,
}
def filters(self):
return self.filter_map
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