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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ssl.h"
#include "sslerr.h"
#include "sslproto.h"
#include <memory>
#include "tls_connect.h"
#include "tls_filter.h"
#include "tls_parser.h"
namespace nss_test {
// Tests for Certificate Transparency (RFC 6962)
// These don't work with TLS 1.3: see bug 1252745.
// Helper class - stores signed certificate timestamps as provided
// by the relevant callbacks on the client.
class SignedCertificateTimestampsExtractor {
public:
SignedCertificateTimestampsExtractor(std::shared_ptr<TlsAgent>& client)
: client_(client) {
client->SetAuthCertificateCallback(
[this](TlsAgent* agent, bool checksig, bool isServer) -> SECStatus {
const SECItem* scts = SSL_PeerSignedCertTimestamps(agent->ssl_fd());
EXPECT_TRUE(scts);
if (!scts) {
return SECFailure;
}
auth_timestamps_.reset(new DataBuffer(scts->data, scts->len));
return SECSuccess;
});
client->SetHandshakeCallback([this](TlsAgent* agent) {
const SECItem* scts = SSL_PeerSignedCertTimestamps(agent->ssl_fd());
ASSERT_TRUE(scts);
handshake_timestamps_.reset(new DataBuffer(scts->data, scts->len));
});
}
void assertTimestamps(const DataBuffer& timestamps) {
EXPECT_TRUE(auth_timestamps_);
EXPECT_EQ(timestamps, *auth_timestamps_);
EXPECT_TRUE(handshake_timestamps_);
EXPECT_EQ(timestamps, *handshake_timestamps_);
const SECItem* current =
SSL_PeerSignedCertTimestamps(client_.lock()->ssl_fd());
EXPECT_EQ(timestamps, DataBuffer(current->data, current->len));
}
private:
std::weak_ptr<TlsAgent> client_;
std::unique_ptr<DataBuffer> auth_timestamps_;
std::unique_ptr<DataBuffer> handshake_timestamps_;
};
static const uint8_t kSctValue[] = {0x01, 0x23, 0x45, 0x67, 0x89};
static const SECItem kSctItem = {siBuffer, const_cast<uint8_t*>(kSctValue),
sizeof(kSctValue)};
static const DataBuffer kSctBuffer(kSctValue, sizeof(kSctValue));
static const SSLExtraServerCertData kExtraSctData = {ssl_auth_null, nullptr,
nullptr, &kSctItem};
// Test timestamps extraction during a successful handshake.
TEST_P(TlsConnectGenericPre13, SignedCertificateTimestampsLegacy) {
EnsureTlsSetup();
// We have to use the legacy API consistently here for configuring certs.
// Also, this doesn't work in TLS 1.3 because this only configures the SCT for
// RSA decrypt and PKCS#1 signing, not PSS.
ScopedCERTCertificate cert;
ScopedSECKEYPrivateKey priv;
ASSERT_TRUE(TlsAgent::LoadCertificate(TlsAgent::kServerRsa, &cert, &priv));
EXPECT_EQ(SECSuccess, SSL_ConfigSecureServerWithCertChain(
server_->ssl_fd(), cert.get(), nullptr, priv.get(),
ssl_kea_rsa));
EXPECT_EQ(SECSuccess, SSL_SetSignedCertTimestamps(server_->ssl_fd(),
&kSctItem, ssl_kea_rsa));
client_->SetOption(SSL_ENABLE_SIGNED_CERT_TIMESTAMPS, PR_TRUE);
SignedCertificateTimestampsExtractor timestamps_extractor(client_);
Connect();
timestamps_extractor.assertTimestamps(kSctBuffer);
}
TEST_P(TlsConnectGeneric, SignedCertificateTimestampsSuccess) {
EnsureTlsSetup();
EXPECT_TRUE(
server_->ConfigServerCert(TlsAgent::kServerRsa, true, &kExtraSctData));
client_->SetOption(SSL_ENABLE_SIGNED_CERT_TIMESTAMPS, PR_TRUE);
SignedCertificateTimestampsExtractor timestamps_extractor(client_);
Connect();
timestamps_extractor.assertTimestamps(kSctBuffer);
}
// Test SSL_PeerSignedCertTimestamps returning zero-length SECItem
// when the client / the server / both have not enabled the feature.
TEST_P(TlsConnectGeneric, SignedCertificateTimestampsInactiveClient) {
EnsureTlsSetup();
EXPECT_TRUE(
server_->ConfigServerCert(TlsAgent::kServerRsa, true, &kExtraSctData));
SignedCertificateTimestampsExtractor timestamps_extractor(client_);
Connect();
timestamps_extractor.assertTimestamps(DataBuffer());
}
TEST_P(TlsConnectGeneric, SignedCertificateTimestampsInactiveServer) {
EnsureTlsSetup();
client_->SetOption(SSL_ENABLE_SIGNED_CERT_TIMESTAMPS, PR_TRUE);
SignedCertificateTimestampsExtractor timestamps_extractor(client_);
Connect();
timestamps_extractor.assertTimestamps(DataBuffer());
}
TEST_P(TlsConnectGeneric, SignedCertificateTimestampsInactiveBoth) {
EnsureTlsSetup();
SignedCertificateTimestampsExtractor timestamps_extractor(client_);
Connect();
timestamps_extractor.assertTimestamps(DataBuffer());
}
// Check that the given agent doesn't have an OCSP response for its peer.
static SECStatus CheckNoOCSP(TlsAgent* agent, bool checksig, bool isServer) {
const SECItemArray* ocsp = SSL_PeerStapledOCSPResponses(agent->ssl_fd());
EXPECT_TRUE(ocsp);
EXPECT_EQ(0U, ocsp->len);
return SECSuccess;
}
static const uint8_t kOcspValue1[] = {1, 2, 3, 4, 5, 6};
static const uint8_t kOcspValue2[] = {7, 8, 9};
static const SECItem kOcspItems[] = {
{siBuffer, const_cast<uint8_t*>(kOcspValue1), sizeof(kOcspValue1)},
{siBuffer, const_cast<uint8_t*>(kOcspValue2), sizeof(kOcspValue2)}};
static const SECItemArray kOcspResponses = {const_cast<SECItem*>(kOcspItems),
PR_ARRAY_SIZE(kOcspItems)};
const static SSLExtraServerCertData kOcspExtraData = {ssl_auth_null, nullptr,
&kOcspResponses, nullptr};
TEST_P(TlsConnectGeneric, NoOcsp) {
EnsureTlsSetup();
client_->SetAuthCertificateCallback(CheckNoOCSP);
Connect();
}
// The client doesn't get OCSP stapling unless it asks.
TEST_P(TlsConnectGeneric, OcspNotRequested) {
EnsureTlsSetup();
client_->SetAuthCertificateCallback(CheckNoOCSP);
EXPECT_TRUE(
server_->ConfigServerCert(TlsAgent::kServerRsa, true, &kOcspExtraData));
Connect();
}
// Even if the client asks, the server has nothing unless it is configured.
TEST_P(TlsConnectGeneric, OcspNotProvided) {
EnsureTlsSetup();
client_->SetOption(SSL_ENABLE_OCSP_STAPLING, PR_TRUE);
client_->SetAuthCertificateCallback(CheckNoOCSP);
Connect();
}
TEST_P(TlsConnectGenericPre13, OcspMangled) {
EnsureTlsSetup();
client_->SetOption(SSL_ENABLE_OCSP_STAPLING, PR_TRUE);
EXPECT_TRUE(
server_->ConfigServerCert(TlsAgent::kServerRsa, true, &kOcspExtraData));
static const uint8_t val[] = {1};
auto replacer = MakeTlsFilter<TlsExtensionReplacer>(
server_, ssl_cert_status_xtn, DataBuffer(val, sizeof(val)));
ConnectExpectAlert(client_, kTlsAlertIllegalParameter);
client_->CheckErrorCode(SSL_ERROR_RX_MALFORMED_SERVER_HELLO);
server_->CheckErrorCode(SSL_ERROR_ILLEGAL_PARAMETER_ALERT);
}
TEST_P(TlsConnectGeneric, OcspSuccess) {
EnsureTlsSetup();
client_->SetOption(SSL_ENABLE_OCSP_STAPLING, PR_TRUE);
auto capture_ocsp =
MakeTlsFilter<TlsExtensionCapture>(server_, ssl_cert_status_xtn);
// The value should be available during the AuthCertificateCallback
client_->SetAuthCertificateCallback([](TlsAgent* agent, bool checksig,
bool isServer) -> SECStatus {
const SECItemArray* ocsp = SSL_PeerStapledOCSPResponses(agent->ssl_fd());
if (!ocsp) {
return SECFailure;
}
EXPECT_EQ(1U, ocsp->len) << "We only provide the first item";
EXPECT_EQ(0, SECITEM_CompareItem(&kOcspItems[0], &ocsp->items[0]));
return SECSuccess;
});
EXPECT_TRUE(
server_->ConfigServerCert(TlsAgent::kServerRsa, true, &kOcspExtraData));
Connect();
// In TLS 1.3, the server doesn't provide a visible ServerHello extension.
// For earlier versions, the extension is just empty.
EXPECT_EQ(0U, capture_ocsp->extension().len());
}
TEST_P(TlsConnectGeneric, OcspHugeSuccess) {
EnsureTlsSetup();
client_->SetOption(SSL_ENABLE_OCSP_STAPLING, PR_TRUE);
uint8_t hugeOcspValue[16385];
memset(hugeOcspValue, 0xa1, sizeof(hugeOcspValue));
const SECItem hugeOcspItems[] = {
{siBuffer, const_cast<uint8_t*>(hugeOcspValue), sizeof(hugeOcspValue)}};
const SECItemArray hugeOcspResponses = {const_cast<SECItem*>(hugeOcspItems),
PR_ARRAY_SIZE(hugeOcspItems)};
const SSLExtraServerCertData hugeOcspExtraData = {
ssl_auth_null, nullptr, &hugeOcspResponses, nullptr};
// The value should be available during the AuthCertificateCallback
client_->SetAuthCertificateCallback([&](TlsAgent* agent, bool checksig,
bool isServer) -> SECStatus {
const SECItemArray* ocsp = SSL_PeerStapledOCSPResponses(agent->ssl_fd());
if (!ocsp) {
return SECFailure;
}
EXPECT_EQ(1U, ocsp->len) << "We only provide the first item";
EXPECT_EQ(0, SECITEM_CompareItem(&hugeOcspItems[0], &ocsp->items[0]));
return SECSuccess;
});
EXPECT_TRUE(server_->ConfigServerCert(TlsAgent::kServerRsa, true,
&hugeOcspExtraData));
Connect();
}
} // namespace nss_test
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