inhibit any policy extension support for the openssl backend

2 files changed, 30 insertions, 0 deletions

diff --git a/src/cryptography/hazmat/backends/openssl/x509.py b/src/cryptography/hazmat/backends/openssl/x509.py
index a836e6a7..3b0c2954 100644
--- a/src/cryptography/hazmat/backends/openssl/x509.py
+++ b/src/cryptography/hazmat/backends/openssl/x509.py
@@ -290,6 +290,8 @@ class _Certificate(object):
                 value = _decode_crl_distribution_points(self._backend, ext)
             elif oid == x509.OID_OCSP_NO_CHECK:
                 value = x509.OCSPNoCheck()
+            elif oid == x509.OID_INHIBIT_ANY_POLICY:
+                value = _decode_inhibit_any_policy(self._backend, ext)
             elif critical:
                 raise x509.UnsupportedExtension(
                     "{0} is not currently supported".format(oid), oid
@@ -635,6 +637,17 @@ def _decode_crl_distribution_points(backend, ext):
     return x509.CRLDistributionPoints(dist_points)
 
 
+def _decode_inhibit_any_policy(backend, ext):
+    asn1_int = backend._ffi.cast(
+        "ASN1_INTEGER *",
+        backend._lib.X509V3_EXT_d2i(ext)
+    )
+    assert asn1_int != backend._ffi.NULL
+    asn1_int = backend._ffi.gc(asn1_int, backend._lib.ASN1_INTEGER_free)
+    skip_certs = _asn1_integer_to_int(backend, asn1_int)
+    return x509.InhibitAnyPolicy(skip_certs)
+
+
 @utils.register_interface(x509.CertificateSigningRequest)
 class _CertificateSigningRequest(object):
     def __init__(self, backend, x509_req):
diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
index c906f1e5..6a23479f 100644
--- a/tests/test_x509_ext.py
+++ b/tests/test_x509_ext.py
@@ -2435,3 +2435,20 @@ class TestInhibitAnyPolicy(object):
         iap2 = x509.InhibitAnyPolicy(4)
         assert iap != iap2
         assert iap != object()
+
+
+@pytest.mark.requires_backend_interface(interface=RSABackend)
+@pytest.mark.requires_backend_interface(interface=X509Backend)
+class TestInhibitAnyPolicyExtension(object):
+    def test_nocheck(self, backend):
+        cert = _load_cert(
+            os.path.join(
+                "x509", "custom", "inhibit_any_policy_5.pem"
+            ),
+            x509.load_pem_x509_certificate,
+            backend
+        )
+        iap = cert.extensions.get_extension_for_oid(
+            x509.OID_INHIBIT_ANY_POLICY
+        ).value
+        assert iap.skip_certs == 5