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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 pytest
from cryptography.exceptions import InternalError
from cryptography.hazmat.bindings.openssl.binding import (
Binding, _OpenSSLErrorWithText, _openssl_assert, _verify_openssl_version
)
class TestOpenSSL(object):
def test_binding_loads(self):
binding = Binding()
assert binding
assert binding.lib
assert binding.ffi
def test_crypto_lock_init(self):
b = Binding()
if (
b.lib.CRYPTOGRAPHY_OPENSSL_110_OR_GREATER and
not b.lib.CRYPTOGRAPHY_IS_LIBRESSL
):
pytest.skip("Requires an older OpenSSL. Must be < 1.1.0")
b.init_static_locks()
lock_cb = b.lib.CRYPTO_get_locking_callback()
assert lock_cb != b.ffi.NULL
def test_add_engine_more_than_once(self):
b = Binding()
b._register_osrandom_engine()
assert b.lib.ERR_get_error() == 0
def test_ssl_ctx_options(self):
# Test that we're properly handling 32-bit unsigned on all platforms.
b = Binding()
assert b.lib.SSL_OP_ALL > 0
ctx = b.lib.SSL_CTX_new(b.lib.TLSv1_method())
ctx = b.ffi.gc(ctx, b.lib.SSL_CTX_free)
current_options = b.lib.SSL_CTX_get_options(ctx)
resp = b.lib.SSL_CTX_set_options(ctx, b.lib.SSL_OP_ALL)
expected_options = current_options | b.lib.SSL_OP_ALL
assert resp == expected_options
assert b.lib.SSL_CTX_get_options(ctx) == expected_options
def test_ssl_options(self):
# Test that we're properly handling 32-bit unsigned on all platforms.
b = Binding()
assert b.lib.SSL_OP_ALL > 0
ctx = b.lib.SSL_CTX_new(b.lib.TLSv1_method())
ctx = b.ffi.gc(ctx, b.lib.SSL_CTX_free)
ssl = b.lib.SSL_new(ctx)
ssl = b.ffi.gc(ssl, b.lib.SSL_free)
current_options = b.lib.SSL_get_options(ssl)
resp = b.lib.SSL_set_options(ssl, b.lib.SSL_OP_ALL)
expected_options = current_options | b.lib.SSL_OP_ALL
assert resp == expected_options
assert b.lib.SSL_get_options(ssl) == expected_options
def test_ssl_mode(self):
# Test that we're properly handling 32-bit unsigned on all platforms.
b = Binding()
assert b.lib.SSL_OP_ALL > 0
ctx = b.lib.SSL_CTX_new(b.lib.TLSv1_method())
ctx = b.ffi.gc(ctx, b.lib.SSL_CTX_free)
ssl = b.lib.SSL_new(ctx)
ssl = b.ffi.gc(ssl, b.lib.SSL_free)
current_options = b.lib.SSL_get_mode(ssl)
resp = b.lib.SSL_set_mode(ssl, b.lib.SSL_OP_ALL)
expected_options = current_options | b.lib.SSL_OP_ALL
assert resp == expected_options
assert b.lib.SSL_get_mode(ssl) == expected_options
def test_conditional_removal(self):
b = Binding()
if b.lib.CRYPTOGRAPHY_OPENSSL_101_OR_GREATER:
assert b.lib.CMAC_Init
else:
with pytest.raises(AttributeError):
b.lib.CMAC_Init
def test_openssl_assert_error_on_stack(self):
b = Binding()
b.lib.ERR_put_error(
b.lib.ERR_LIB_EVP,
b.lib.EVP_F_EVP_ENCRYPTFINAL_EX,
b.lib.EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH,
b"",
-1
)
with pytest.raises(InternalError) as exc_info:
_openssl_assert(b.lib, False)
assert exc_info.value.err_code == [_OpenSSLErrorWithText(
code=101183626,
lib=b.lib.ERR_LIB_EVP,
func=b.lib.EVP_F_EVP_ENCRYPTFINAL_EX,
reason=b.lib.EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH,
reason_text=(
b'error:0607F08A:digital envelope routines:EVP_EncryptFinal_'
b'ex:data not multiple of block length'
)
)]
def test_verify_openssl_version(self, monkeypatch):
monkeypatch.delenv("CRYPTOGRAPHY_ALLOW_OPENSSL_100", raising=False)
with pytest.raises(RuntimeError):
# OpenSSL 1.0.0
_verify_openssl_version(0x100000F)
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