community.crypto/tests/unit/plugins/module_utils/openssh/test_cryptography.py

402 lines
10 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (c) Ansible Project
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import absolute_import, division, print_function
__metaclass__ = type
import pytest
import os.path
from getpass import getuser
from os import remove, rmdir
from socket import gethostname
from tempfile import mkdtemp
from ansible_collections.community.crypto.plugins.module_utils.openssh.cryptography import (
HAS_OPENSSH_SUPPORT,
InvalidCommentError,
InvalidPrivateKeyFileError,
InvalidPublicKeyFileError,
InvalidKeySizeError,
InvalidKeyTypeError,
InvalidPassphraseError,
OpensshKeypair
)
DEFAULT_KEY_PARAMS = [
(
'rsa',
None,
None,
None,
),
(
'dsa',
None,
None,
None,
),
(
'ecdsa',
None,
None,
None,
),
(
'ed25519',
None,
None,
None,
),
]
VALID_USER_KEY_PARAMS = [
(
'rsa',
8192,
'change_me'.encode('UTF-8'),
'comment',
),
(
'dsa',
1024,
'change_me'.encode('UTF-8'),
'comment',
),
(
'ecdsa',
521,
'change_me'.encode('UTF-8'),
'comment',
),
(
'ed25519',
256,
'change_me'.encode('UTF-8'),
'comment',
),
]
INVALID_USER_KEY_PARAMS = [
(
'dne',
None,
None,
None,
),
(
'rsa',
None,
[1, 2, 3],
'comment',
),
(
'ecdsa',
None,
None,
[1, 2, 3],
),
]
INVALID_KEY_SIZES = [
(
'rsa',
1023,
None,
None,
),
(
'rsa',
16385,
None,
None,
),
(
'dsa',
256,
None,
None,
),
(
'ecdsa',
1024,
None,
None,
),
(
'ed25519',
1024,
None,
None,
),
]
@pytest.mark.parametrize("keytype,size,passphrase,comment", DEFAULT_KEY_PARAMS)
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_default_key_params(keytype, size, passphrase, comment):
result = True
default_sizes = {
'rsa': 2048,
'dsa': 1024,
'ecdsa': 256,
'ed25519': 256,
}
default_comment = "%s@%s" % (getuser(), gethostname())
pair = OpensshKeypair.generate(keytype=keytype, size=size, passphrase=passphrase, comment=comment)
try:
pair = OpensshKeypair.generate(keytype=keytype, size=size, passphrase=passphrase, comment=comment)
if pair.size != default_sizes[pair.key_type] or pair.comment != default_comment:
result = False
except Exception as e:
print(e)
result = False
assert result
@pytest.mark.parametrize("keytype,size,passphrase,comment", VALID_USER_KEY_PARAMS)
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_valid_user_key_params(keytype, size, passphrase, comment):
result = True
try:
pair = OpensshKeypair.generate(keytype=keytype, size=size, passphrase=passphrase, comment=comment)
if pair.key_type != keytype or pair.size != size or pair.comment != comment:
result = False
except Exception as e:
print(e)
result = False
assert result
@pytest.mark.parametrize("keytype,size,passphrase,comment", INVALID_USER_KEY_PARAMS)
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_invalid_user_key_params(keytype, size, passphrase, comment):
result = False
try:
OpensshKeypair.generate(keytype=keytype, size=size, passphrase=passphrase, comment=comment)
except (InvalidCommentError, InvalidKeyTypeError, InvalidPassphraseError):
result = True
except Exception as e:
print(e)
pass
assert result
@pytest.mark.parametrize("keytype,size,passphrase,comment", INVALID_KEY_SIZES)
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_invalid_key_sizes(keytype, size, passphrase, comment):
result = False
try:
OpensshKeypair.generate(keytype=keytype, size=size, passphrase=passphrase, comment=comment)
except InvalidKeySizeError:
result = True
except Exception as e:
print(e)
pass
assert result
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_valid_comment_update():
pair = OpensshKeypair.generate()
new_comment = "comment"
try:
pair.comment = new_comment
except Exception as e:
print(e)
pass
assert pair.comment == new_comment and pair.public_key.split(b' ', 2)[2].decode() == new_comment
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_invalid_comment_update():
result = False
pair = OpensshKeypair.generate()
new_comment = [1, 2, 3]
try:
pair.comment = new_comment
except InvalidCommentError:
result = True
assert result
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_valid_passphrase_update():
result = False
passphrase = "change_me".encode('UTF-8')
try:
tmpdir = mkdtemp()
keyfilename = os.path.join(tmpdir, "id_rsa")
pair1 = OpensshKeypair.generate()
pair1.update_passphrase(passphrase)
with open(keyfilename, "w+b") as keyfile:
keyfile.write(pair1.private_key)
with open(keyfilename + '.pub', "w+b") as pubkeyfile:
pubkeyfile.write(pair1.public_key)
pair2 = OpensshKeypair.load(path=keyfilename, passphrase=passphrase)
if pair1 == pair2:
result = True
finally:
if os.path.exists(keyfilename):
remove(keyfilename)
if os.path.exists(keyfilename + '.pub'):
remove(keyfilename + '.pub')
if os.path.exists(tmpdir):
rmdir(tmpdir)
assert result
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_invalid_passphrase_update():
result = False
passphrase = [1, 2, 3]
pair = OpensshKeypair.generate()
try:
pair.update_passphrase(passphrase)
except InvalidPassphraseError:
result = True
assert result
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_invalid_privatekey():
result = False
try:
tmpdir = mkdtemp()
keyfilename = os.path.join(tmpdir, "id_rsa")
pair = OpensshKeypair.generate()
with open(keyfilename, "w+b") as keyfile:
keyfile.write(pair.private_key[1:])
with open(keyfilename + '.pub', "w+b") as pubkeyfile:
pubkeyfile.write(pair.public_key)
OpensshKeypair.load(path=keyfilename)
except InvalidPrivateKeyFileError:
result = True
finally:
if os.path.exists(keyfilename):
remove(keyfilename)
if os.path.exists(keyfilename + '.pub'):
remove(keyfilename + '.pub')
if os.path.exists(tmpdir):
rmdir(tmpdir)
assert result
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_mismatched_keypair():
result = False
try:
tmpdir = mkdtemp()
keyfilename = os.path.join(tmpdir, "id_rsa")
pair1 = OpensshKeypair.generate()
pair2 = OpensshKeypair.generate()
with open(keyfilename, "w+b") as keyfile:
keyfile.write(pair1.private_key)
with open(keyfilename + '.pub', "w+b") as pubkeyfile:
pubkeyfile.write(pair2.public_key)
OpensshKeypair.load(path=keyfilename)
except InvalidPublicKeyFileError:
result = True
finally:
if os.path.exists(keyfilename):
remove(keyfilename)
if os.path.exists(keyfilename + '.pub'):
remove(keyfilename + '.pub')
if os.path.exists(tmpdir):
rmdir(tmpdir)
assert result
@pytest.mark.skipif(not HAS_OPENSSH_SUPPORT, reason="requires cryptography")
def test_keypair_comparison():
assert OpensshKeypair.generate() != OpensshKeypair.generate()
assert OpensshKeypair.generate() != OpensshKeypair.generate(keytype='dsa')
assert OpensshKeypair.generate() != OpensshKeypair.generate(keytype='ed25519')
assert OpensshKeypair.generate(keytype='ed25519') != OpensshKeypair.generate(keytype='ed25519')
try:
tmpdir = mkdtemp()
keys = {
'rsa': {
'pair': OpensshKeypair.generate(),
'filename': os.path.join(tmpdir, "id_rsa"),
},
'dsa': {
'pair': OpensshKeypair.generate(keytype='dsa', passphrase='change_me'.encode('UTF-8')),
'filename': os.path.join(tmpdir, "id_dsa"),
},
'ed25519': {
'pair': OpensshKeypair.generate(keytype='ed25519'),
'filename': os.path.join(tmpdir, "id_ed25519"),
}
}
for v in keys.values():
with open(v['filename'], "w+b") as keyfile:
keyfile.write(v['pair'].private_key)
with open(v['filename'] + '.pub', "w+b") as pubkeyfile:
pubkeyfile.write(v['pair'].public_key)
assert keys['rsa']['pair'] == OpensshKeypair.load(path=keys['rsa']['filename'])
loaded_dsa_key = OpensshKeypair.load(path=keys['dsa']['filename'], passphrase='change_me'.encode('UTF-8'))
assert keys['dsa']['pair'] == loaded_dsa_key
loaded_dsa_key.update_passphrase('change_me_again'.encode('UTF-8'))
assert keys['dsa']['pair'] != loaded_dsa_key
loaded_dsa_key.update_passphrase('change_me'.encode('UTF-8'))
assert keys['dsa']['pair'] == loaded_dsa_key
loaded_dsa_key.comment = "comment"
assert keys['dsa']['pair'] != loaded_dsa_key
assert keys['ed25519']['pair'] == OpensshKeypair.load(path=keys['ed25519']['filename'])
finally:
for v in keys.values():
if os.path.exists(v['filename']):
remove(v['filename'])
if os.path.exists(v['filename'] + '.pub'):
remove(v['filename'] + '.pub')
if os.path.exists(tmpdir):
rmdir(tmpdir)
assert OpensshKeypair.generate() != []