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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
#include "tls/policy/s2n_policy_feature.h"
static S2N_RESULT s2n_security_policies_assert_match(
const struct s2n_security_policy *a, const struct s2n_security_policy *b)
{
/* Compare cipher preferences */
const struct s2n_cipher_preferences *a_cipher_prefs = a->cipher_preferences;
const struct s2n_cipher_preferences *b_cipher_prefs = b->cipher_preferences;
EXPECT_NOT_NULL(a_cipher_prefs);
EXPECT_NOT_NULL(b_cipher_prefs);
EXPECT_EQUAL(a_cipher_prefs->count, b_cipher_prefs->count);
for (size_t i = 0; i < a_cipher_prefs->count; i++) {
EXPECT_EQUAL(a_cipher_prefs->suites[i], b_cipher_prefs->suites[i]);
}
/* Compare signature preferences */
const struct s2n_signature_preferences *a_sig_prefs = a->signature_preferences;
const struct s2n_signature_preferences *b_sig_prefs = b->signature_preferences;
EXPECT_NOT_NULL(a_sig_prefs);
EXPECT_NOT_NULL(b_sig_prefs);
EXPECT_EQUAL(a_sig_prefs->count, b_sig_prefs->count);
for (size_t i = 0; i < a_sig_prefs->count; i++) {
EXPECT_EQUAL(a_sig_prefs->signature_schemes[i], b_sig_prefs->signature_schemes[i]);
}
/* Compare certificate signature preferences */
const struct s2n_signature_preferences *a_cert_sig_prefs = a->certificate_signature_preferences;
const struct s2n_signature_preferences *b_cert_sig_prefs = b->certificate_signature_preferences;
if (a_cert_sig_prefs) {
EXPECT_NOT_NULL(b_cert_sig_prefs);
EXPECT_EQUAL(a_cert_sig_prefs->count, b_cert_sig_prefs->count);
for (size_t i = 0; i < a_cert_sig_prefs->count; i++) {
EXPECT_EQUAL(a_cert_sig_prefs->signature_schemes[i], b_cert_sig_prefs->signature_schemes[i]);
}
} else {
EXPECT_NULL(b_cert_sig_prefs);
}
/* Compare ecc curve preferences */
const struct s2n_ecc_preferences *a_ecc_prefs = a->ecc_preferences;
const struct s2n_ecc_preferences *b_ecc_prefs = b->ecc_preferences;
EXPECT_NOT_NULL(a_ecc_prefs);
EXPECT_NOT_NULL(b_ecc_prefs);
EXPECT_EQUAL(a_ecc_prefs->count, b_ecc_prefs->count);
for (size_t i = 0; i < a_ecc_prefs->count; i++) {
EXPECT_EQUAL(a_ecc_prefs->ecc_curves[i], b_ecc_prefs->ecc_curves[i]);
}
/* Compare certificate key preferences */
const struct s2n_certificate_key_preferences *a_key_prefs = a->certificate_key_preferences;
const struct s2n_certificate_key_preferences *b_key_prefs = b->certificate_key_preferences;
if (a_key_prefs) {
EXPECT_NOT_NULL(b_key_prefs);
EXPECT_EQUAL(a_key_prefs->count, b_key_prefs->count);
for (size_t i = 0; i < a_key_prefs->count; i++) {
EXPECT_EQUAL(a_key_prefs->certificate_keys[i], b_key_prefs->certificate_keys[i]);
}
} else {
EXPECT_NULL(b_key_prefs);
}
/* Compare kem preferences */
const struct s2n_kem_preferences *a_kem_prefs = a->kem_preferences;
const struct s2n_kem_preferences *b_kem_prefs = b->kem_preferences;
if (a_kem_prefs) {
EXPECT_NOT_NULL(b_kem_prefs);
EXPECT_EQUAL(a_kem_prefs->tls13_kem_group_count, b_kem_prefs->tls13_kem_group_count);
for (size_t i = 0; i < a_kem_prefs->tls13_kem_group_count; i++) {
EXPECT_EQUAL(a_kem_prefs->tls13_kem_groups[i], b_kem_prefs->tls13_kem_groups[i]);
}
} else {
EXPECT_NULL(b_kem_prefs);
}
/* If we assume that the source code uses memcpy or similar instead of
* setting individual fields, we don't have to ensure that EVERY field matches.
* Checking a few fields should be sufficient.
* That means that this test does not need to be updated with all new fields.
* We should include one field from each preferences list, but the `count`
* checks above should also handle that requirement.
*/
EXPECT_EQUAL(a->minimum_protocol_version, b->minimum_protocol_version);
EXPECT_EQUAL(a->rules[S2N_PERFECT_FORWARD_SECRECY], b->rules[S2N_PERFECT_FORWARD_SECRECY]);
EXPECT_EQUAL(a_cipher_prefs->allow_chacha20_boosting, b_cipher_prefs->allow_chacha20_boosting);
if (a_kem_prefs) {
EXPECT_EQUAL(a_kem_prefs->tls13_pq_hybrid_draft_revision, b_kem_prefs->tls13_pq_hybrid_draft_revision);
}
return S2N_RESULT_OK;
}
int main(int argc, char **argv)
{
BEGIN_TEST();
/* Test: s2n_security_policy_builder_from_version / s2n_security_policy_builder_free */
{
/* Test: safety */
{
EXPECT_NULL_WITH_ERRNO(
s2n_security_policy_builder_from_version(NULL),
S2N_ERR_INVALID_ARGUMENT);
EXPECT_SUCCESS(s2n_security_policy_builder_free(NULL));
struct s2n_security_policy_builder *builder = NULL;
EXPECT_SUCCESS(s2n_security_policy_builder_free(&builder));
};
/* Test: builder from invalid policy version */
{
EXPECT_NULL_WITH_ERRNO(
s2n_security_policy_builder_from_version("not_a_real_policy_version"),
S2N_ERR_INVALID_SECURITY_POLICY);
};
/* Test: successfully create and free a builder */
{
struct s2n_security_policy_builder *builder =
s2n_security_policy_builder_from_version("20250721");
EXPECT_NOT_NULL(builder);
EXPECT_SUCCESS(s2n_security_policy_builder_free(&builder));
EXPECT_NULL(builder);
/* Freeing again is a no-op */
EXPECT_SUCCESS(s2n_security_policy_builder_free(&builder));
EXPECT_NULL(builder);
};
};
/* Test: s2n_security_policy_build / s2n_security_policy_free */
{
/* Test: safety */
{
EXPECT_NULL_WITH_ERRNO(
s2n_security_policy_build(NULL),
S2N_ERR_INVALID_ARGUMENT);
EXPECT_SUCCESS(s2n_security_policy_free(NULL));
struct s2n_security_policy *policy = NULL;
EXPECT_SUCCESS(s2n_security_policy_free(&policy));
};
/* Test: successfully build and free a policy */
{
DEFER_CLEANUP(struct s2n_security_policy_builder *builder =
s2n_security_policy_builder_from_version("20250721"),
s2n_security_policy_builder_free);
EXPECT_NOT_NULL(builder);
struct s2n_security_policy *policy = s2n_security_policy_build(builder);
EXPECT_NOT_NULL(policy);
EXPECT_TRUE(policy->alloced);
EXPECT_SUCCESS(s2n_security_policy_free(&policy));
EXPECT_NULL(policy);
/* Freeing again is a no-op */
EXPECT_SUCCESS(s2n_security_policy_free(&policy));
EXPECT_NULL(policy);
};
/* Test: builder copies policies */
{
DEFER_CLEANUP(struct s2n_security_policy_builder *builder =
s2n_security_policy_builder_from_version("20250721"),
s2n_security_policy_builder_free);
EXPECT_NOT_NULL(builder);
DEFER_CLEANUP(struct s2n_security_policy *copy =
s2n_security_policy_build(builder),
s2n_security_policy_free);
EXPECT_NOT_NULL(copy);
const struct s2n_security_policy *original = &security_policy_20250721;
EXPECT_OK(s2n_security_policies_assert_match(copy, original));
};
};
/* Test: validate with all current static policies */
for (size_t policy_index = 0; security_policy_selection[policy_index].version != NULL; policy_index++) {
const char *version = security_policy_selection[policy_index].version;
const struct s2n_security_policy *policy =
security_policy_selection[policy_index].security_policy;
/* Test: can create builder from all static policies */
{
struct s2n_security_policy_builder *builder =
s2n_security_policy_builder_from_version(version);
EXPECT_NOT_NULL(builder);
EXPECT_SUCCESS(s2n_security_policy_builder_free(&builder));
};
/* Test: can build with all static policies */
{
DEFER_CLEANUP(struct s2n_security_policy_builder *builder =
s2n_security_policy_builder_from_version(version),
s2n_security_policy_builder_free);
EXPECT_NOT_NULL(builder);
struct s2n_security_policy *copy = s2n_security_policy_build(builder);
EXPECT_NOT_NULL(copy);
EXPECT_OK(s2n_security_policies_assert_match(copy, policy));
EXPECT_SUCCESS(s2n_security_policy_free(©));
};
/* Test: cannot free any static policy */
{
struct s2n_security_policy *non_const_policy =
(struct s2n_security_policy *) (void *) (uintptr_t) (const void *) policy;
EXPECT_FAILURE_WITH_ERRNO(
s2n_security_policy_free(&non_const_policy),
S2N_ERR_INVALID_ARGUMENT);
};
}
END_TEST();
}
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