diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cryptography/hazmat/backends/openssl/backend.py | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/cryptography/hazmat/backends/openssl/backend.py b/src/cryptography/hazmat/backends/openssl/backend.py index 73a58637..f05b0515 100644 --- a/src/cryptography/hazmat/backends/openssl/backend.py +++ b/src/cryptography/hazmat/backends/openssl/backend.py @@ -136,6 +136,36 @@ def _encode_basic_constraints(backend, basic_constraints): return pp, r +def _encode_subject_alt_name(backend, san): + general_names = backend._lib.GENERAL_NAMES_new() + assert general_names != backend._ffi.NULL + # TODO: GC + + for alt_name in san: + assert isinstance(alt_name, x509.DNSName) + gn = backend._lib.GENERAL_NAME_new() + assert gn != backend._ffi.NULL + gn.type = backend._lib.GEN_DNS + ia5 = backend._lib.ASN1_IA5STRING_new() + assert ia5 != backend._ffi.NULL + gn.d.dNSName = ia5 + # TODO: idna + value = alt_name.value.encode("ascii") + res = backend._lib.ASN1_STRING_set(gn.d.dNSName, value, len(value)) + assert res == 1 + + res = backend._lib.sk_GENERAL_NAME_push(general_names, gn) + assert res == 1 + + pp = backend._ffi.new("unsigned char **") + r = backend._lib.i2d_GENERAL_NAMES(general_names, pp) + assert r > 0 + pp = backend._ffi.gc( + pp, lambda pointer: backend._lib.OPENSSL_free(pointer[0]) + ) + return pp, r + + @utils.register_interface(CipherBackend) @utils.register_interface(CMACBackend) @utils.register_interface(DERSerializationBackend) @@ -841,12 +871,14 @@ class Backend(object): self._lib.sk_X509_EXTENSION_free, ) for extension in builder._extensions: - obj = _txt2obj(self, extension.oid.dotted_string) if isinstance(extension.value, x509.BasicConstraints): pp, r = _encode_basic_constraints(self, extension.value) + elif isinstance(extension.value, x509.SubjectAlternativeName): + pp, r = _encode_subject_alt_name(self, extension.value) else: raise NotImplementedError('Extension not yet supported.') + obj = _txt2obj(self, extension.oid.dotted_string) extension = self._lib.X509_EXTENSION_create_by_OBJ( self._ffi.NULL, obj, |