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# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
from __future__ import absolute_import, division, print_function
import os
import pytest
from cryptography import x509
from cryptography.hazmat.backends.interfaces import RSABackend, X509Backend
from .test_x509 import _load_cert
class TestExtension(object):
def test_not_an_oid(self):
bc = x509.BasicConstraints(ca=False, path_length=None)
with pytest.raises(TypeError):
x509.Extension("notanoid", True, bc)
def test_critical_not_a_bool(self):
bc = x509.BasicConstraints(ca=False, path_length=None)
with pytest.raises(TypeError):
x509.Extension(x509.OID_BASIC_CONSTRAINTS, "notabool", bc)
def test_repr(self):
bc = x509.BasicConstraints(ca=False, path_length=None)
ext = x509.Extension(x509.OID_BASIC_CONSTRAINTS, True, bc)
assert repr(ext) == (
"<Extension(oid=<ObjectIdentifier(oid=2.5.29.19, name=basicConst"
"raints)>, critical=True, value=<BasicConstraints(ca=False, path"
"_length=None)>)>"
)
class TestBasicConstraints(object):
def test_ca_not_boolean(self):
with pytest.raises(TypeError):
x509.BasicConstraints(ca="notbool", path_length=None)
def test_path_length_not_ca(self):
with pytest.raises(ValueError):
x509.BasicConstraints(ca=False, path_length=0)
def test_path_length_not_int(self):
with pytest.raises(TypeError):
x509.BasicConstraints(ca=True, path_length=1.1)
with pytest.raises(TypeError):
x509.BasicConstraints(ca=True, path_length="notint")
def test_path_length_negative(self):
with pytest.raises(TypeError):
x509.BasicConstraints(ca=True, path_length=-1)
def test_repr(self):
na = x509.BasicConstraints(ca=True, path_length=None)
assert repr(na) == (
"<BasicConstraints(ca=True, path_length=None)>"
)
class TestExtendedKeyUsage(object):
def test_not_all_oids(self):
with pytest.raises(TypeError):
x509.ExtendedKeyUsage(["notoid"])
def test_iter_len(self):
eku = x509.ExtendedKeyUsage([
x509.ObjectIdentifier("1.3.6.1.5.5.7.3.1"),
x509.ObjectIdentifier("1.3.6.1.5.5.7.3.2"),
])
assert len(eku) == 2
assert list(eku) == [
x509.OID_SERVER_AUTH,
x509.OID_CLIENT_AUTH
]
@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.requires_backend_interface(interface=X509Backend)
class TestExtensions(object):
def test_no_extensions(self, backend):
cert = _load_cert(
os.path.join("x509", "verisign_md2_root.pem"),
x509.load_pem_x509_certificate,
backend
)
ext = cert.extensions
assert len(ext) == 0
assert list(ext) == []
with pytest.raises(x509.ExtensionNotFound) as exc:
ext.get_extension_for_oid(x509.OID_BASIC_CONSTRAINTS)
assert exc.value.oid == x509.OID_BASIC_CONSTRAINTS
def test_one_extension(self, backend):
cert = _load_cert(
os.path.join(
"x509", "custom", "basic_constraints_not_critical.pem"
),
x509.load_pem_x509_certificate,
backend
)
extensions = cert.extensions
ext = extensions.get_extension_for_oid(x509.OID_BASIC_CONSTRAINTS)
assert ext is not None
assert ext.value.ca is False
def test_duplicate_extension(self, backend):
cert = _load_cert(
os.path.join(
"x509", "custom", "two_basic_constraints.pem"
),
x509.load_pem_x509_certificate,
backend
)
with pytest.raises(x509.DuplicateExtension) as exc:
cert.extensions
assert exc.value.oid == x509.OID_BASIC_CONSTRAINTS
def test_unsupported_critical_extension(self, backend):
cert = _load_cert(
os.path.join(
"x509", "custom", "unsupported_extension_critical.pem"
),
x509.load_pem_x509_certificate,
backend
)
with pytest.raises(x509.UnsupportedExtension) as exc:
cert.extensions
assert exc.value.oid == x509.ObjectIdentifier("1.2.3.4")
def test_unsupported_extension(self, backend):
# TODO: this will raise an exception when all extensions are complete
cert = _load_cert(
os.path.join(
"x509", "custom", "unsupported_extension.pem"
),
x509.load_pem_x509_certificate,
backend
)
extensions = cert.extensions
assert len(extensions) == 0
@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.requires_backend_interface(interface=X509Backend)
class TestBasicConstraintsExtension(object):
def test_ca_true_pathlen_6(self, backend):
cert = _load_cert(
os.path.join(
"x509", "PKITS_data", "certs", "pathLenConstraint6CACert.crt"
),
x509.load_der_x509_certificate,
backend
)
ext = cert.extensions.get_extension_for_oid(
x509.OID_BASIC_CONSTRAINTS
)
assert ext is not None
assert ext.critical is True
assert ext.value.ca is True
assert ext.value.path_length == 6
def test_path_length_zero(self, backend):
cert = _load_cert(
os.path.join("x509", "custom", "bc_path_length_zero.pem"),
x509.load_pem_x509_certificate,
backend
)
ext = cert.extensions.get_extension_for_oid(
x509.OID_BASIC_CONSTRAINTS
)
assert ext is not None
assert ext.critical is True
assert ext.value.ca is True
assert ext.value.path_length == 0
def test_ca_true_no_pathlen(self, backend):
cert = _load_cert(
os.path.join("x509", "PKITS_data", "certs", "GoodCACert.crt"),
x509.load_der_x509_certificate,
backend
)
ext = cert.extensions.get_extension_for_oid(
x509.OID_BASIC_CONSTRAINTS
)
assert ext is not None
assert ext.critical is True
assert ext.value.ca is True
assert ext.value.path_length is None
def test_ca_false(self, backend):
cert = _load_cert(
os.path.join("x509", "cryptography.io.pem"),
x509.load_pem_x509_certificate,
backend
)
ext = cert.extensions.get_extension_for_oid(
x509.OID_BASIC_CONSTRAINTS
)
assert ext is not None
assert ext.critical is True
assert ext.value.ca is False
assert ext.value.path_length is None
def test_no_basic_constraints(self, backend):
cert = _load_cert(
os.path.join(
"x509",
"PKITS_data",
"certs",
"ValidCertificatePathTest1EE.crt"
),
x509.load_der_x509_certificate,
backend
)
with pytest.raises(x509.ExtensionNotFound):
cert.extensions.get_extension_for_oid(x509.OID_BASIC_CONSTRAINTS)
def test_basic_constraint_not_critical(self, backend):
cert = _load_cert(
os.path.join(
"x509", "custom", "basic_constraints_not_critical.pem"
),
x509.load_pem_x509_certificate,
backend
)
ext = cert.extensions.get_extension_for_oid(
x509.OID_BASIC_CONSTRAINTS
)
assert ext is not None
assert ext.critical is False
assert ext.value.ca is False
|
