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ansible/test/units/parsing/vault/test_vault.py

361 lines
14 KiB
Python

# -*- coding: utf-8 -*-
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import six
import binascii
import io
import os
from binascii import hexlify
from nose.plugins.skip import SkipTest
from ansible.compat.tests import unittest
from ansible.utils.unicode import to_bytes, to_unicode
from ansible import errors
from ansible.parsing.vault import VaultLib
from ansible.parsing import vault
# Counter import fails for 2.0.1, requires >= 2.6.1 from pip
try:
from Crypto.Util import Counter
HAS_COUNTER = True
except ImportError:
HAS_COUNTER = False
# KDF import fails for 2.0.1, requires >= 2.6.1 from pip
try:
from Crypto.Protocol.KDF import PBKDF2
HAS_PBKDF2 = True
except ImportError:
HAS_PBKDF2 = False
# AES IMPORTS
try:
from Crypto.Cipher import AES as AES
HAS_AES = True
except ImportError:
HAS_AES = False
class TestVaultIsEncrypted(unittest.TestCase):
def test_utf8_not_encrypted(self):
b_data = "foobar".encode('utf8')
self.assertFalse(vault.is_encrypted(b_data))
def test_utf8_encrypted(self):
data = u"$ANSIBLE_VAULT;9.9;TEST\n%s" % hexlify(b"ansible")
b_data = data.encode('utf8')
self.assertTrue(vault.is_encrypted(b_data))
def test_bytes_not_encrypted(self):
b_data = b"foobar"
self.assertFalse(vault.is_encrypted(b_data))
def test_bytes_encrypted(self):
b_data = b"$ANSIBLE_VAULT;9.9;TEST\n%s" + hexlify(b"ansible")
self.assertTrue(vault.is_encrypted(b_data))
def test_unicode_not_encrypted_py3(self):
if not six.PY3:
raise SkipTest()
data = u"ァ ア ィ イ ゥ ウ ェ エ ォ オ カ ガ キ ギ ク グ ケ "
self.assertRaises(TypeError, vault.is_encrypted, data)
def test_unicode_not_encrypted_py2(self):
if six.PY3:
raise SkipTest()
data = u"ァ ア ィ イ ゥ ウ ェ エ ォ オ カ ガ キ ギ ク グ ケ "
# py2 will take a unicode string, but that should always fails
self.assertFalse(vault.is_encrypted(data))
def test_unicode_is_encrypted_py3(self):
if not six.PY3:
raise SkipTest()
data = "$ANSIBLE_VAULT;9.9;TEST\n%s" % hexlify(b"ansible")
# should still be a type error
self.assertRaises(TypeError, vault.is_encrypted, data)
def test_unicode_is_encrypted_py2(self):
if six.PY3:
raise SkipTest()
data = u"$ANSIBLE_VAULT;9.9;TEST\n%s" % hexlify(b"ansible")
# THis works, but arguably shouldn't...
self.assertTrue(vault.is_encrypted(data))
class TestVaultIsEncryptedFile(unittest.TestCase):
def test_utf8_not_encrypted(self):
b_data = "foobar".encode('utf8')
b_data_fo = io.BytesIO(b_data)
self.assertFalse(vault.is_encrypted_file(b_data_fo))
def test_utf8_encrypted(self):
data = u"$ANSIBLE_VAULT;9.9;TEST\n%s" % hexlify(b"ansible")
b_data = data.encode('utf8')
b_data_fo = io.BytesIO(b_data)
self.assertTrue(vault.is_encrypted_file(b_data_fo))
def test_bytes_not_encrypted(self):
b_data = b"foobar"
b_data_fo = io.BytesIO(b_data)
self.assertFalse(vault.is_encrypted_file(b_data_fo))
def test_bytes_encrypted(self):
b_data = b"$ANSIBLE_VAULT;9.9;TEST\n%s" + hexlify(b"ansible")
b_data_fo = io.BytesIO(b_data)
self.assertTrue(vault.is_encrypted_file(b_data_fo))
class TestVaultCipherAes256(unittest.TestCase):
def test(self):
vault_cipher = vault.VaultAES256()
self.assertIsInstance(vault_cipher, vault.VaultAES256)
# TODO: tag these as slow tests
def test_create_key(self):
vault_cipher = vault.VaultAES256()
password = 'hunter42'
b_salt = os.urandom(32)
b_key = vault_cipher.create_key(password=password, salt=b_salt, keylength=32, ivlength=16)
self.assertIsInstance(b_key, six.binary_type)
def test_create_key_known(self):
vault_cipher = vault.VaultAES256()
password = 'hunter42'
# A fixed salt
b_salt = b'q' * 32 # q is the most random letter.
b_key = vault_cipher.create_key(password=password, salt=b_salt, keylength=32, ivlength=16)
self.assertIsInstance(b_key, six.binary_type)
# verify we get the same answer
# we could potentially run a few iterations of this and time it to see if it's roughly constant time
# and or that it exceeds some minimal time, but that would likely cause unreliable fails, esp in CI
b_key_2 = vault_cipher.create_key(password=password, salt=b_salt, keylength=32, ivlength=16)
self.assertIsInstance(b_key, six.binary_type)
self.assertEqual(b_key, b_key_2)
def test_is_equal_is_equal(self):
vault_cipher = vault.VaultAES256()
res = vault_cipher.is_equal(b'abcdefghijklmnopqrstuvwxyz', b'abcdefghijklmnopqrstuvwxyz')
self.assertTrue(res)
def test_is_equal_unequal_length(self):
vault_cipher = vault.VaultAES256()
res = vault_cipher.is_equal(b'abcdefghijklmnopqrstuvwxyz', b'abcdefghijklmnopqrstuvwx and sometimes y')
self.assertFalse(res)
def test_is_equal_not_equal(self):
vault_cipher = vault.VaultAES256()
res = vault_cipher.is_equal(b'abcdefghijklmnopqrstuvwxyz', b'AbcdefghijKlmnopQrstuvwxZ')
self.assertFalse(res)
def test_is_equal_empty(self):
vault_cipher = vault.VaultAES256()
res = vault_cipher.is_equal(b'', b'')
self.assertTrue(res)
# NOTE: I'm not really sure what the method should do if it doesn't get bytes,
# but this at least sees if it explodes (maybe it should?)
def test_is_equal_unicode_py3(self):
if not six.PY3:
raise SkipTest
vault_cipher = vault.VaultAES256()
self.assertRaises(TypeError, vault_cipher.is_equal,
u'私はガラスを食べられます。それは私を傷つけません。',
u'私はガラスを食べられます。それは私を傷つけません。')
def test_is_equal_unicode_py2(self):
if not six.PY2:
raise SkipTest
vault_cipher = vault.VaultAES256()
res = vault_cipher.is_equal(u'私はガラスを食べられます。それは私を傷つけません。',
u'私はガラスを食べられます。それは私を傷つけません。')
self.assertTrue(res)
def test_is_equal_unicode_different(self):
vault_cipher = vault.VaultAES256()
res = vault_cipher.is_equal(u'私はガラスを食べられます。それは私を傷つけません。',
u'Pot să mănânc sticlă și ea nu mă rănește.')
self.assertFalse(res)
class TestVaultLib(unittest.TestCase):
def test_methods_exist(self):
v = VaultLib('ansible')
slots = ['is_encrypted',
'encrypt',
'decrypt',
'_format_output',
'_split_header',]
for slot in slots:
assert hasattr(v, slot), "VaultLib is missing the %s method" % slot
def test_encrypt(self):
v = VaultLib(password='the_unit_test_password')
plaintext = u'Some text to encrypt.'
ciphertext = v.encrypt(plaintext)
self.assertIsInstance(ciphertext, (bytes, str))
# TODO: assert something...
def test_is_encrypted(self):
v = VaultLib(None)
assert not v.is_encrypted("foobar".encode('utf-8')), "encryption check on plaintext failed"
data = u"$ANSIBLE_VAULT;9.9;TEST\n%s" % hexlify(b"ansible")
assert v.is_encrypted(data.encode('utf-8')), "encryption check on headered text failed"
def test_is_encrypted_bytes(self):
v = VaultLib(None)
assert not v.is_encrypted(b"foobar"), "encryption check on plaintext failed"
data = b"$ANSIBLE_VAULT;9.9;TEST\n%s" + hexlify(b"ansible")
assert v.is_encrypted(data), "encryption check on headered text failed"
def test_format_output(self):
v = VaultLib('ansible')
v.cipher_name = "TEST"
sensitive_data = b"ansible"
data = v._format_output(sensitive_data)
lines = data.split(b'\n')
assert len(lines) > 1, "failed to properly add header"
header = to_bytes(lines[0])
assert header.endswith(b';TEST'), "header does end with cipher name"
header_parts = header.split(b';')
assert len(header_parts) == 3, "header has the wrong number of parts"
assert header_parts[0] == b'$ANSIBLE_VAULT', "header does not start with $ANSIBLE_VAULT"
assert header_parts[1] == v.b_version, "header version is incorrect"
assert header_parts[2] == b'TEST', "header does end with cipher name"
def test_split_header(self):
v = VaultLib('ansible')
data = b"$ANSIBLE_VAULT;9.9;TEST\nansible"
rdata = v._split_header(data)
lines = rdata.split(b'\n')
assert lines[0] == b"ansible"
assert v.cipher_name == 'TEST', "cipher name was not set"
assert v.b_version == b"9.9"
def test_encrypt_decrypt_aes(self):
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('ansible')
v.cipher_name = u'AES'
# AES encryption code has been removed, so this is old output for
# AES-encrypted 'foobar' with password 'ansible'.
enc_data = b'$ANSIBLE_VAULT;1.1;AES\n53616c7465645f5fc107ce1ef4d7b455e038a13b053225776458052f8f8f332d554809d3f150bfa3\nfe3db930508b65e0ff5947e4386b79af8ab094017629590ef6ba486814cf70f8e4ab0ed0c7d2587e\n786a5a15efeb787e1958cbdd480d076c\n'
dec_data = v.decrypt(enc_data)
assert dec_data == b"foobar", "decryption failed"
def test_encrypt_decrypt_aes256(self):
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('ansible')
v.cipher_name = 'AES256'
plaintext = "foobar"
enc_data = v.encrypt(plaintext)
dec_data = v.decrypt(enc_data)
assert enc_data != b"foobar", "encryption failed"
assert dec_data == b"foobar", "decryption failed"
def test_encrypt_decrypt_aes256_existing_vault(self):
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('test-vault-password')
v.cipher_name = 'AES256'
plaintext = b"Setec Astronomy"
enc_data = '''$ANSIBLE_VAULT;1.1;AES256
33363965326261303234626463623963633531343539616138316433353830356566396130353436
3562643163366231316662386565383735653432386435610a306664636137376132643732393835
63383038383730306639353234326630666539346233376330303938323639306661313032396437
6233623062366136310a633866373936313238333730653739323461656662303864663666653563
3138'''
dec_data = v.decrypt(enc_data)
assert dec_data == plaintext, "decryption failed"
def test_encrypt_decrypt_aes256_bad_hmac(self):
# FIXME This test isn't working quite yet.
raise SkipTest
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('test-vault-password')
v.cipher_name = 'AES256'
# plaintext = "Setec Astronomy"
enc_data = '''$ANSIBLE_VAULT;1.1;AES256
33363965326261303234626463623963633531343539616138316433353830356566396130353436
3562643163366231316662386565383735653432386435610a306664636137376132643732393835
63383038383730306639353234326630666539346233376330303938323639306661313032396437
6233623062366136310a633866373936313238333730653739323461656662303864663666653563
3138'''
b_data = to_bytes(enc_data, errors='strict', encoding='utf-8')
b_data = v._split_header(b_data)
foo = binascii.unhexlify(b_data)
lines = foo.splitlines()
# line 0 is salt, line 1 is hmac, line 2+ is ciphertext
b_salt = lines[0]
b_hmac = lines[1]
b_ciphertext_data = b'\n'.join(lines[2:])
b_ciphertext = binascii.unhexlify(b_ciphertext_data)
# b_orig_ciphertext = b_ciphertext[:]
# now muck with the text
# b_munged_ciphertext = b_ciphertext[:10] + b'\x00' + b_ciphertext[11:]
# b_munged_ciphertext = b_ciphertext
# assert b_orig_ciphertext != b_munged_ciphertext
b_ciphertext_data = binascii.hexlify(b_ciphertext)
b_payload = b'\n'.join([b_salt, b_hmac, b_ciphertext_data])
# reformat
b_invalid_ciphertext = v._format_output(b_payload)
# assert we throw an error
v.decrypt(b_invalid_ciphertext)
def test_encrypt_encrypted(self):
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('ansible')
v.cipher_name = 'AES'
data = "$ANSIBLE_VAULT;9.9;TEST\n%s" % hexlify(six.b("ansible"))
self.assertRaises(errors.AnsibleError, v.encrypt, data,)
def test_decrypt_decrypted(self):
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('ansible')
data = "ansible"
self.assertRaises(errors.AnsibleError, v.decrypt, data)
def test_cipher_not_set(self):
# not setting the cipher should default to AES256
if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
raise SkipTest
v = VaultLib('ansible')
data = "ansible"
v.encrypt(data)
self.assertEquals(v.cipher_name, "AES256")