openssl/test/ossl_shim/ossl_shim.cc
Rich Salz aff8c126fd Move extension data into sub-structs
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2052)
2017-01-09 22:26:47 -05:00

1265 lines
37 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#if !defined(__STDC_FORMAT_MACROS)
#define __STDC_FORMAT_MACROS
#endif
#include <openssl/e_os2.h>
#if !defined(OPENSSL_SYS_WINDOWS)
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <signal.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <unistd.h>
#else
#include <io.h>
OPENSSL_MSVC_PRAGMA(warning(push, 3))
#include <winsock2.h>
#include <ws2tcpip.h>
OPENSSL_MSVC_PRAGMA(warning(pop))
OPENSSL_MSVC_PRAGMA(comment(lib, "Ws2_32.lib"))
#endif
#include <assert.h>
#include <inttypes.h>
#include <string.h>
#include <openssl/bio.h>
#include <openssl/buffer.h>
#include <openssl/bn.h>
#include <openssl/crypto.h>
#include <openssl/dh.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/objects.h>
#include <openssl/rand.h>
#include <openssl/ssl.h>
#include <openssl/x509.h>
#include <memory>
#include <string>
#include <vector>
#include "async_bio.h"
#include "packeted_bio.h"
#include "test_config.h"
namespace bssl {
#if !defined(OPENSSL_SYS_WINDOWS)
static int closesocket(int sock) {
return close(sock);
}
static void PrintSocketError(const char *func) {
perror(func);
}
#else
static void PrintSocketError(const char *func) {
fprintf(stderr, "%s: %d\n", func, WSAGetLastError());
}
#endif
static int Usage(const char *program) {
fprintf(stderr, "Usage: %s [flags...]\n", program);
return 1;
}
struct TestState {
// async_bio is async BIO which pauses reads and writes.
BIO *async_bio = nullptr;
// packeted_bio is the packeted BIO which simulates read timeouts.
BIO *packeted_bio = nullptr;
bool cert_ready = false;
bool handshake_done = false;
// private_key is the underlying private key used when testing custom keys.
bssl::UniquePtr<EVP_PKEY> private_key;
bool got_new_session = false;
bssl::UniquePtr<SSL_SESSION> new_session;
bool ticket_decrypt_done = false;
bool alpn_select_done = false;
};
static void TestStateExFree(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
int index, long argl, void *argp) {
delete ((TestState *)ptr);
}
static int g_config_index = 0;
static int g_state_index = 0;
static bool SetTestConfig(SSL *ssl, const TestConfig *config) {
return SSL_set_ex_data(ssl, g_config_index, (void *)config) == 1;
}
static const TestConfig *GetTestConfig(const SSL *ssl) {
return (const TestConfig *)SSL_get_ex_data(ssl, g_config_index);
}
static bool SetTestState(SSL *ssl, std::unique_ptr<TestState> state) {
// |SSL_set_ex_data| takes ownership of |state| only on success.
if (SSL_set_ex_data(ssl, g_state_index, state.get()) == 1) {
state.release();
return true;
}
return false;
}
static TestState *GetTestState(const SSL *ssl) {
return (TestState *)SSL_get_ex_data(ssl, g_state_index);
}
static bssl::UniquePtr<X509> LoadCertificate(const std::string &file) {
bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_file()));
if (!bio || !BIO_read_filename(bio.get(), file.c_str())) {
return nullptr;
}
return bssl::UniquePtr<X509>(PEM_read_bio_X509(bio.get(), NULL, NULL, NULL));
}
static bssl::UniquePtr<EVP_PKEY> LoadPrivateKey(const std::string &file) {
bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_file()));
if (!bio || !BIO_read_filename(bio.get(), file.c_str())) {
return nullptr;
}
return bssl::UniquePtr<EVP_PKEY>(
PEM_read_bio_PrivateKey(bio.get(), NULL, NULL, NULL));
}
template<typename T>
struct Free {
void operator()(T *buf) {
free(buf);
}
};
static bool GetCertificate(SSL *ssl, bssl::UniquePtr<X509> *out_x509,
bssl::UniquePtr<EVP_PKEY> *out_pkey) {
const TestConfig *config = GetTestConfig(ssl);
if (!config->key_file.empty()) {
*out_pkey = LoadPrivateKey(config->key_file.c_str());
if (!*out_pkey) {
return false;
}
}
if (!config->cert_file.empty()) {
*out_x509 = LoadCertificate(config->cert_file.c_str());
if (!*out_x509) {
return false;
}
}
return true;
}
static bool InstallCertificate(SSL *ssl) {
bssl::UniquePtr<X509> x509;
bssl::UniquePtr<EVP_PKEY> pkey;
if (!GetCertificate(ssl, &x509, &pkey)) {
return false;
}
if (pkey && !SSL_use_PrivateKey(ssl, pkey.get())) {
return false;
}
if (x509 && !SSL_use_certificate(ssl, x509.get())) {
return false;
}
return true;
}
static int ClientCertCallback(SSL *ssl, X509 **out_x509, EVP_PKEY **out_pkey) {
if (GetTestConfig(ssl)->async && !GetTestState(ssl)->cert_ready) {
return -1;
}
bssl::UniquePtr<X509> x509;
bssl::UniquePtr<EVP_PKEY> pkey;
if (!GetCertificate(ssl, &x509, &pkey)) {
return -1;
}
// Return zero for no certificate.
if (!x509) {
return 0;
}
// Asynchronous private keys are not supported with client_cert_cb.
*out_x509 = x509.release();
*out_pkey = pkey.release();
return 1;
}
static int VerifySucceed(X509_STORE_CTX *store_ctx, void *arg) {
return 1;
}
static int VerifyFail(X509_STORE_CTX *store_ctx, void *arg) {
X509_STORE_CTX_set_error(store_ctx, X509_V_ERR_APPLICATION_VERIFICATION);
return 0;
}
static int NextProtosAdvertisedCallback(SSL *ssl, const uint8_t **out,
unsigned int *out_len, void *arg) {
const TestConfig *config = GetTestConfig(ssl);
if (config->advertise_npn.empty()) {
return SSL_TLSEXT_ERR_NOACK;
}
*out = (const uint8_t*)config->advertise_npn.data();
*out_len = config->advertise_npn.size();
return SSL_TLSEXT_ERR_OK;
}
static int NextProtoSelectCallback(SSL* ssl, uint8_t** out, uint8_t* outlen,
const uint8_t* in, unsigned inlen, void* arg) {
const TestConfig *config = GetTestConfig(ssl);
if (config->select_next_proto.empty()) {
return SSL_TLSEXT_ERR_NOACK;
}
*out = (uint8_t*)config->select_next_proto.data();
*outlen = config->select_next_proto.size();
return SSL_TLSEXT_ERR_OK;
}
static int AlpnSelectCallback(SSL* ssl, const uint8_t** out, uint8_t* outlen,
const uint8_t* in, unsigned inlen, void* arg) {
if (GetTestState(ssl)->alpn_select_done) {
fprintf(stderr, "AlpnSelectCallback called after completion.\n");
exit(1);
}
GetTestState(ssl)->alpn_select_done = true;
const TestConfig *config = GetTestConfig(ssl);
if (config->decline_alpn) {
return SSL_TLSEXT_ERR_NOACK;
}
if (!config->expected_advertised_alpn.empty() &&
(config->expected_advertised_alpn.size() != inlen ||
memcmp(config->expected_advertised_alpn.data(),
in, inlen) != 0)) {
fprintf(stderr, "bad ALPN select callback inputs\n");
exit(1);
}
*out = (const uint8_t*)config->select_alpn.data();
*outlen = config->select_alpn.size();
return SSL_TLSEXT_ERR_OK;
}
static unsigned PskClientCallback(SSL *ssl, const char *hint,
char *out_identity,
unsigned max_identity_len,
uint8_t *out_psk, unsigned max_psk_len) {
const TestConfig *config = GetTestConfig(ssl);
if (config->psk_identity.empty()) {
if (hint != nullptr) {
fprintf(stderr, "Server PSK hint was non-null.\n");
return 0;
}
} else if (hint == nullptr ||
strcmp(hint, config->psk_identity.c_str()) != 0) {
fprintf(stderr, "Server PSK hint did not match.\n");
return 0;
}
// Account for the trailing '\0' for the identity.
if (config->psk_identity.size() >= max_identity_len ||
config->psk.size() > max_psk_len) {
fprintf(stderr, "PSK buffers too small\n");
return 0;
}
BUF_strlcpy(out_identity, config->psk_identity.c_str(),
max_identity_len);
memcpy(out_psk, config->psk.data(), config->psk.size());
return config->psk.size();
}
static unsigned PskServerCallback(SSL *ssl, const char *identity,
uint8_t *out_psk, unsigned max_psk_len) {
const TestConfig *config = GetTestConfig(ssl);
if (strcmp(identity, config->psk_identity.c_str()) != 0) {
fprintf(stderr, "Client PSK identity did not match.\n");
return 0;
}
if (config->psk.size() > max_psk_len) {
fprintf(stderr, "PSK buffers too small\n");
return 0;
}
memcpy(out_psk, config->psk.data(), config->psk.size());
return config->psk.size();
}
static int CertCallback(SSL *ssl, void *arg) {
const TestConfig *config = GetTestConfig(ssl);
// Check the CertificateRequest metadata is as expected.
//
// TODO(davidben): Test |SSL_get_client_CA_list|.
if (!SSL_is_server(ssl) &&
!config->expected_certificate_types.empty()) {
const uint8_t *certificate_types;
size_t certificate_types_len =
SSL_get0_certificate_types(ssl, &certificate_types);
if (certificate_types_len != config->expected_certificate_types.size() ||
memcmp(certificate_types,
config->expected_certificate_types.data(),
certificate_types_len) != 0) {
fprintf(stderr, "certificate types mismatch\n");
return 0;
}
}
// The certificate will be installed via other means.
if (!config->async ||
config->use_old_client_cert_callback) {
return 1;
}
if (!GetTestState(ssl)->cert_ready) {
return -1;
}
if (!InstallCertificate(ssl)) {
return 0;
}
return 1;
}
static void InfoCallback(const SSL *ssl, int type, int val) {
if (type == SSL_CB_HANDSHAKE_DONE) {
if (GetTestConfig(ssl)->handshake_never_done) {
fprintf(stderr, "Handshake unexpectedly completed.\n");
// Abort before any expected error code is printed, to ensure the overall
// test fails.
abort();
}
GetTestState(ssl)->handshake_done = true;
// Callbacks may be called again on a new handshake.
GetTestState(ssl)->ticket_decrypt_done = false;
GetTestState(ssl)->alpn_select_done = false;
}
}
static int NewSessionCallback(SSL *ssl, SSL_SESSION *session) {
GetTestState(ssl)->got_new_session = true;
GetTestState(ssl)->new_session.reset(session);
return 1;
}
static int TicketKeyCallback(SSL *ssl, uint8_t *key_name, uint8_t *iv,
EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
int encrypt) {
if (!encrypt) {
if (GetTestState(ssl)->ticket_decrypt_done) {
fprintf(stderr, "TicketKeyCallback called after completion.\n");
return -1;
}
GetTestState(ssl)->ticket_decrypt_done = true;
}
// This is just test code, so use the all-zeros key.
static const uint8_t kZeros[16] = {0};
if (encrypt) {
memcpy(key_name, kZeros, sizeof(kZeros));
RAND_bytes(iv, 16);
} else if (memcmp(key_name, kZeros, 16) != 0) {
return 0;
}
if (!HMAC_Init_ex(hmac_ctx, kZeros, sizeof(kZeros), EVP_sha256(), NULL) ||
!EVP_CipherInit_ex(ctx, EVP_aes_128_cbc(), NULL, kZeros, iv, encrypt)) {
return -1;
}
if (!encrypt) {
return GetTestConfig(ssl)->renew_ticket ? 2 : 1;
}
return 1;
}
// kCustomExtensionValue is the extension value that the custom extension
// callbacks will add.
static const uint16_t kCustomExtensionValue = 1234;
static void *const kCustomExtensionAddArg =
reinterpret_cast<void *>(kCustomExtensionValue);
static void *const kCustomExtensionParseArg =
reinterpret_cast<void *>(kCustomExtensionValue + 1);
static const char kCustomExtensionContents[] = "custom extension";
static int CustomExtensionAddCallback(SSL *ssl, unsigned extension_value,
const uint8_t **out, size_t *out_len,
int *out_alert_value, void *add_arg) {
if (extension_value != kCustomExtensionValue ||
add_arg != kCustomExtensionAddArg) {
abort();
}
if (GetTestConfig(ssl)->custom_extension_skip) {
return 0;
}
if (GetTestConfig(ssl)->custom_extension_fail_add) {
return -1;
}
*out = reinterpret_cast<const uint8_t*>(kCustomExtensionContents);
*out_len = sizeof(kCustomExtensionContents) - 1;
return 1;
}
static void CustomExtensionFreeCallback(SSL *ssl, unsigned extension_value,
const uint8_t *out, void *add_arg) {
if (extension_value != kCustomExtensionValue ||
add_arg != kCustomExtensionAddArg ||
out != reinterpret_cast<const uint8_t *>(kCustomExtensionContents)) {
abort();
}
}
static int CustomExtensionParseCallback(SSL *ssl, unsigned extension_value,
const uint8_t *contents,
size_t contents_len,
int *out_alert_value, void *parse_arg) {
if (extension_value != kCustomExtensionValue ||
parse_arg != kCustomExtensionParseArg) {
abort();
}
if (contents_len != sizeof(kCustomExtensionContents) - 1 ||
memcmp(contents, kCustomExtensionContents, contents_len) != 0) {
*out_alert_value = SSL_AD_DECODE_ERROR;
return 0;
}
return 1;
}
// Connect returns a new socket connected to localhost on |port| or -1 on
// error.
static int Connect(uint16_t port) {
int sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == -1) {
PrintSocketError("socket");
return -1;
}
int nodelay = 1;
if (setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
reinterpret_cast<const char*>(&nodelay), sizeof(nodelay)) != 0) {
PrintSocketError("setsockopt");
closesocket(sock);
return -1;
}
sockaddr_in sin;
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
if (!inet_pton(AF_INET, "127.0.0.1", &sin.sin_addr)) {
PrintSocketError("inet_pton");
closesocket(sock);
return -1;
}
if (connect(sock, reinterpret_cast<const sockaddr*>(&sin),
sizeof(sin)) != 0) {
PrintSocketError("connect");
closesocket(sock);
return -1;
}
return sock;
}
class SocketCloser {
public:
explicit SocketCloser(int sock) : sock_(sock) {}
~SocketCloser() {
// Half-close and drain the socket before releasing it. This seems to be
// necessary for graceful shutdown on Windows. It will also avoid write
// failures in the test runner.
#if defined(OPENSSL_SYS_WINDOWS)
shutdown(sock_, SD_SEND);
#else
shutdown(sock_, SHUT_WR);
#endif
while (true) {
char buf[1024];
if (recv(sock_, buf, sizeof(buf), 0) <= 0) {
break;
}
}
closesocket(sock_);
}
private:
const int sock_;
};
static bssl::UniquePtr<SSL_CTX> SetupCtx(const TestConfig *config) {
bssl::UniquePtr<SSL_CTX> ssl_ctx(SSL_CTX_new(
config->is_dtls ? DTLS_method() : TLS_method()));
if (!ssl_ctx) {
return nullptr;
}
SSL_CTX_set_security_level(ssl_ctx.get(), 0);
#if 0
/* Disabled for now until we have some TLS1.3 support */
// Enable TLS 1.3 for tests.
if (!config->is_dtls &&
!SSL_CTX_set_max_proto_version(ssl_ctx.get(), TLS1_3_VERSION)) {
return nullptr;
}
#endif
std::string cipher_list = "ALL";
if (!config->cipher.empty()) {
cipher_list = config->cipher;
SSL_CTX_set_options(ssl_ctx.get(), SSL_OP_CIPHER_SERVER_PREFERENCE);
}
if (!SSL_CTX_set_cipher_list(ssl_ctx.get(), cipher_list.c_str())) {
return nullptr;
}
DH *tmpdh;
if (config->use_sparse_dh_prime) {
BIGNUM *p, *g;
p = BN_new();
g = BN_new();
tmpdh = DH_new();
if (p == NULL || g == NULL || tmpdh == NULL) {
BN_free(p);
BN_free(g);
DH_free(tmpdh);
return nullptr;
}
// This prime number is 2^1024 + 643 a value just above a power of two.
// Because of its form, values modulo it are essentially certain to be one
// byte shorter. This is used to test padding of these values.
if (BN_hex2bn(
&p,
"1000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000028"
"3") == 0 ||
!BN_set_word(g, 2)) {
BN_free(p);
BN_free(g);
DH_free(tmpdh);
return nullptr;
}
DH_set0_pqg(tmpdh, p, NULL, g);
} else {
tmpdh = DH_get_2048_256();
}
bssl::UniquePtr<DH> dh(tmpdh);
if (!dh || !SSL_CTX_set_tmp_dh(ssl_ctx.get(), dh.get())) {
return nullptr;
}
SSL_CTX_set_session_cache_mode(ssl_ctx.get(), SSL_SESS_CACHE_BOTH);
if (config->use_old_client_cert_callback) {
SSL_CTX_set_client_cert_cb(ssl_ctx.get(), ClientCertCallback);
}
SSL_CTX_set_npn_advertised_cb(
ssl_ctx.get(), NextProtosAdvertisedCallback, NULL);
if (!config->select_next_proto.empty()) {
SSL_CTX_set_next_proto_select_cb(ssl_ctx.get(), NextProtoSelectCallback,
NULL);
}
if (!config->select_alpn.empty() || config->decline_alpn) {
SSL_CTX_set_alpn_select_cb(ssl_ctx.get(), AlpnSelectCallback, NULL);
}
SSL_CTX_set_info_callback(ssl_ctx.get(), InfoCallback);
SSL_CTX_sess_set_new_cb(ssl_ctx.get(), NewSessionCallback);
if (config->use_ticket_callback) {
SSL_CTX_set_tlsext_ticket_key_cb(ssl_ctx.get(), TicketKeyCallback);
}
if (config->enable_client_custom_extension &&
!SSL_CTX_add_client_custom_ext(
ssl_ctx.get(), kCustomExtensionValue, CustomExtensionAddCallback,
CustomExtensionFreeCallback, kCustomExtensionAddArg,
CustomExtensionParseCallback, kCustomExtensionParseArg)) {
return nullptr;
}
if (config->enable_server_custom_extension &&
!SSL_CTX_add_server_custom_ext(
ssl_ctx.get(), kCustomExtensionValue, CustomExtensionAddCallback,
CustomExtensionFreeCallback, kCustomExtensionAddArg,
CustomExtensionParseCallback, kCustomExtensionParseArg)) {
return nullptr;
}
if (config->verify_fail) {
SSL_CTX_set_cert_verify_callback(ssl_ctx.get(), VerifyFail, NULL);
} else {
SSL_CTX_set_cert_verify_callback(ssl_ctx.get(), VerifySucceed, NULL);
}
if (config->use_null_client_ca_list) {
SSL_CTX_set_client_CA_list(ssl_ctx.get(), nullptr);
}
return ssl_ctx;
}
// RetryAsync is called after a failed operation on |ssl| with return code
// |ret|. If the operation should be retried, it simulates one asynchronous
// event and returns true. Otherwise it returns false.
static bool RetryAsync(SSL *ssl, int ret) {
// No error; don't retry.
if (ret >= 0) {
return false;
}
TestState *test_state = GetTestState(ssl);
assert(GetTestConfig(ssl)->async);
if (test_state->packeted_bio != nullptr &&
PacketedBioAdvanceClock(test_state->packeted_bio)) {
// The DTLS retransmit logic silently ignores write failures. So the test
// may progress, allow writes through synchronously.
AsyncBioEnforceWriteQuota(test_state->async_bio, false);
int timeout_ret = DTLSv1_handle_timeout(ssl);
AsyncBioEnforceWriteQuota(test_state->async_bio, true);
if (timeout_ret < 0) {
fprintf(stderr, "Error retransmitting.\n");
return false;
}
return true;
}
// See if we needed to read or write more. If so, allow one byte through on
// the appropriate end to maximally stress the state machine.
switch (SSL_get_error(ssl, ret)) {
case SSL_ERROR_WANT_READ:
AsyncBioAllowRead(test_state->async_bio, 1);
return true;
case SSL_ERROR_WANT_WRITE:
AsyncBioAllowWrite(test_state->async_bio, 1);
return true;
case SSL_ERROR_WANT_X509_LOOKUP:
test_state->cert_ready = true;
return true;
default:
return false;
}
}
// DoRead reads from |ssl|, resolving any asynchronous operations. It returns
// the result value of the final |SSL_read| call.
static int DoRead(SSL *ssl, uint8_t *out, size_t max_out) {
const TestConfig *config = GetTestConfig(ssl);
TestState *test_state = GetTestState(ssl);
int ret;
do {
if (config->async) {
// The DTLS retransmit logic silently ignores write failures. So the test
// may progress, allow writes through synchronously. |SSL_read| may
// trigger a retransmit, so disconnect the write quota.
AsyncBioEnforceWriteQuota(test_state->async_bio, false);
}
ret = config->peek_then_read ? SSL_peek(ssl, out, max_out)
: SSL_read(ssl, out, max_out);
if (config->async) {
AsyncBioEnforceWriteQuota(test_state->async_bio, true);
}
} while (config->async && RetryAsync(ssl, ret));
if (config->peek_then_read && ret > 0) {
std::unique_ptr<uint8_t[]> buf(new uint8_t[static_cast<size_t>(ret)]);
// SSL_peek should synchronously return the same data.
int ret2 = SSL_peek(ssl, buf.get(), ret);
if (ret2 != ret ||
memcmp(buf.get(), out, ret) != 0) {
fprintf(stderr, "First and second SSL_peek did not match.\n");
return -1;
}
// SSL_read should synchronously return the same data and consume it.
ret2 = SSL_read(ssl, buf.get(), ret);
if (ret2 != ret ||
memcmp(buf.get(), out, ret) != 0) {
fprintf(stderr, "SSL_peek and SSL_read did not match.\n");
return -1;
}
}
return ret;
}
// WriteAll writes |in_len| bytes from |in| to |ssl|, resolving any asynchronous
// operations. It returns the result of the final |SSL_write| call.
static int WriteAll(SSL *ssl, const uint8_t *in, size_t in_len) {
const TestConfig *config = GetTestConfig(ssl);
int ret;
do {
ret = SSL_write(ssl, in, in_len);
if (ret > 0) {
in += ret;
in_len -= ret;
}
} while ((config->async && RetryAsync(ssl, ret)) || (ret > 0 && in_len > 0));
return ret;
}
// DoShutdown calls |SSL_shutdown|, resolving any asynchronous operations. It
// returns the result of the final |SSL_shutdown| call.
static int DoShutdown(SSL *ssl) {
const TestConfig *config = GetTestConfig(ssl);
int ret;
do {
ret = SSL_shutdown(ssl);
} while (config->async && RetryAsync(ssl, ret));
return ret;
}
static uint16_t GetProtocolVersion(const SSL *ssl) {
uint16_t version = SSL_version(ssl);
if (!SSL_is_dtls(ssl)) {
return version;
}
return 0x0201 + ~version;
}
// CheckHandshakeProperties checks, immediately after |ssl| completes its
// initial handshake (or False Starts), whether all the properties are
// consistent with the test configuration and invariants.
static bool CheckHandshakeProperties(SSL *ssl, bool is_resume) {
const TestConfig *config = GetTestConfig(ssl);
if (SSL_get_current_cipher(ssl) == nullptr) {
fprintf(stderr, "null cipher after handshake\n");
return false;
}
if (is_resume &&
(!!SSL_session_reused(ssl) == config->expect_session_miss)) {
fprintf(stderr, "session was%s reused\n",
SSL_session_reused(ssl) ? "" : " not");
return false;
}
if (!GetTestState(ssl)->handshake_done) {
fprintf(stderr, "handshake was not completed\n");
return false;
}
if (!config->is_server) {
bool expect_new_session =
!config->expect_no_session &&
(!SSL_session_reused(ssl) || config->expect_ticket_renewal) &&
// Session tickets are sent post-handshake in TLS 1.3.
GetProtocolVersion(ssl) < TLS1_3_VERSION;
if (expect_new_session != GetTestState(ssl)->got_new_session) {
fprintf(stderr,
"new session was%s cached, but we expected the opposite\n",
GetTestState(ssl)->got_new_session ? "" : " not");
return false;
}
}
if (!config->expected_server_name.empty()) {
const char *server_name =
SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
if (server_name != config->expected_server_name) {
fprintf(stderr, "servername mismatch (got %s; want %s)\n",
server_name, config->expected_server_name.c_str());
return false;
}
}
if (!config->expected_next_proto.empty()) {
const uint8_t *next_proto;
unsigned next_proto_len;
SSL_get0_next_proto_negotiated(ssl, &next_proto, &next_proto_len);
if (next_proto_len != config->expected_next_proto.size() ||
memcmp(next_proto, config->expected_next_proto.data(),
next_proto_len) != 0) {
fprintf(stderr, "negotiated next proto mismatch\n");
return false;
}
}
if (!config->expected_alpn.empty()) {
const uint8_t *alpn_proto;
unsigned alpn_proto_len;
SSL_get0_alpn_selected(ssl, &alpn_proto, &alpn_proto_len);
if (alpn_proto_len != config->expected_alpn.size() ||
memcmp(alpn_proto, config->expected_alpn.data(),
alpn_proto_len) != 0) {
fprintf(stderr, "negotiated alpn proto mismatch\n");
return false;
}
}
if (config->expect_extended_master_secret) {
if (!SSL_get_extms_support(ssl)) {
fprintf(stderr, "No EMS for connection when expected");
return false;
}
}
if (config->expect_verify_result) {
int expected_verify_result = config->verify_fail ?
X509_V_ERR_APPLICATION_VERIFICATION :
X509_V_OK;
if (SSL_get_verify_result(ssl) != expected_verify_result) {
fprintf(stderr, "Wrong certificate verification result\n");
return false;
}
}
if (!config->psk.empty()) {
if (SSL_get_peer_cert_chain(ssl) != nullptr) {
fprintf(stderr, "Received peer certificate on a PSK cipher.\n");
return false;
}
} else if (!config->is_server || config->require_any_client_certificate) {
if (SSL_get_peer_cert_chain(ssl) == nullptr) {
fprintf(stderr, "Received no peer certificate but expected one.\n");
return false;
}
}
return true;
}
// DoExchange runs a test SSL exchange against the peer. On success, it returns
// true and sets |*out_session| to the negotiated SSL session. If the test is a
// resumption attempt, |is_resume| is true and |session| is the session from the
// previous exchange.
static bool DoExchange(bssl::UniquePtr<SSL_SESSION> *out_session,
SSL_CTX *ssl_ctx, const TestConfig *config,
bool is_resume, SSL_SESSION *session) {
bssl::UniquePtr<SSL> ssl(SSL_new(ssl_ctx));
if (!ssl) {
return false;
}
if (!SetTestConfig(ssl.get(), config) ||
!SetTestState(ssl.get(), std::unique_ptr<TestState>(new TestState))) {
return false;
}
if (config->fallback_scsv &&
!SSL_set_mode(ssl.get(), SSL_MODE_SEND_FALLBACK_SCSV)) {
return false;
}
// Install the certificate synchronously if nothing else will handle it.
if (!config->use_old_client_cert_callback &&
!config->async &&
!InstallCertificate(ssl.get())) {
return false;
}
SSL_set_cert_cb(ssl.get(), CertCallback, nullptr);
if (config->require_any_client_certificate) {
SSL_set_verify(ssl.get(), SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
NULL);
}
if (config->verify_peer) {
SSL_set_verify(ssl.get(), SSL_VERIFY_PEER, NULL);
}
if (config->partial_write) {
SSL_set_mode(ssl.get(), SSL_MODE_ENABLE_PARTIAL_WRITE);
}
if (config->no_tls13) {
SSL_set_options(ssl.get(), SSL_OP_NO_TLSv1_3);
}
if (config->no_tls12) {
SSL_set_options(ssl.get(), SSL_OP_NO_TLSv1_2);
}
if (config->no_tls11) {
SSL_set_options(ssl.get(), SSL_OP_NO_TLSv1_1);
}
if (config->no_tls1) {
SSL_set_options(ssl.get(), SSL_OP_NO_TLSv1);
}
if (config->no_ssl3) {
SSL_set_options(ssl.get(), SSL_OP_NO_SSLv3);
}
if (!config->host_name.empty() &&
!SSL_set_tlsext_host_name(ssl.get(), config->host_name.c_str())) {
return false;
}
if (!config->advertise_alpn.empty() &&
SSL_set_alpn_protos(ssl.get(),
(const uint8_t *)config->advertise_alpn.data(),
config->advertise_alpn.size()) != 0) {
return false;
}
if (!config->psk.empty()) {
SSL_set_psk_client_callback(ssl.get(), PskClientCallback);
SSL_set_psk_server_callback(ssl.get(), PskServerCallback);
}
if (!config->psk_identity.empty() &&
!SSL_use_psk_identity_hint(ssl.get(), config->psk_identity.c_str())) {
return false;
}
if (!config->srtp_profiles.empty() &&
SSL_set_tlsext_use_srtp(ssl.get(), config->srtp_profiles.c_str())) {
return false;
}
if (config->min_version != 0 &&
!SSL_set_min_proto_version(ssl.get(), (uint16_t)config->min_version)) {
return false;
}
if (config->max_version != 0 &&
!SSL_set_max_proto_version(ssl.get(), (uint16_t)config->max_version)) {
return false;
}
if (config->mtu != 0) {
SSL_set_options(ssl.get(), SSL_OP_NO_QUERY_MTU);
SSL_set_mtu(ssl.get(), config->mtu);
}
if (config->renegotiate_freely) {
// This is always on for OpenSSL.
}
if (!config->check_close_notify) {
SSL_set_quiet_shutdown(ssl.get(), 1);
}
if (config->p384_only) {
int nid = NID_secp384r1;
if (!SSL_set1_curves(ssl.get(), &nid, 1)) {
return false;
}
}
if (config->enable_all_curves) {
static const int kAllCurves[] = {
NID_X9_62_prime256v1, NID_secp384r1, NID_secp521r1, NID_X25519,
};
if (!SSL_set1_curves(ssl.get(), kAllCurves,
OPENSSL_ARRAY_SIZE(kAllCurves))) {
return false;
}
}
if (config->max_cert_list > 0) {
SSL_set_max_cert_list(ssl.get(), config->max_cert_list);
}
int sock = Connect(config->port);
if (sock == -1) {
return false;
}
SocketCloser closer(sock);
bssl::UniquePtr<BIO> bio(BIO_new_socket(sock, BIO_NOCLOSE));
if (!bio) {
return false;
}
if (config->is_dtls) {
bssl::UniquePtr<BIO> packeted = PacketedBioCreate(!config->async);
if (!packeted) {
return false;
}
GetTestState(ssl.get())->packeted_bio = packeted.get();
BIO_push(packeted.get(), bio.release());
bio = std::move(packeted);
}
if (config->async) {
bssl::UniquePtr<BIO> async_scoped =
config->is_dtls ? AsyncBioCreateDatagram() : AsyncBioCreate();
if (!async_scoped) {
return false;
}
BIO_push(async_scoped.get(), bio.release());
GetTestState(ssl.get())->async_bio = async_scoped.get();
bio = std::move(async_scoped);
}
SSL_set_bio(ssl.get(), bio.get(), bio.get());
bio.release(); // SSL_set_bio takes ownership.
if (session != NULL) {
if (!config->is_server) {
if (SSL_set_session(ssl.get(), session) != 1) {
return false;
}
}
}
#if 0
// KNOWN BUG: OpenSSL's SSL_get_current_cipher behaves incorrectly when
// offering resumption.
if (SSL_get_current_cipher(ssl.get()) != nullptr) {
fprintf(stderr, "non-null cipher before handshake\n");
return false;
}
#endif
int ret;
if (config->implicit_handshake) {
if (config->is_server) {
SSL_set_accept_state(ssl.get());
} else {
SSL_set_connect_state(ssl.get());
}
} else {
do {
if (config->is_server) {
ret = SSL_accept(ssl.get());
} else {
ret = SSL_connect(ssl.get());
}
} while (config->async && RetryAsync(ssl.get(), ret));
if (ret != 1 ||
!CheckHandshakeProperties(ssl.get(), is_resume)) {
return false;
}
// Reset the state to assert later that the callback isn't called in
// renegotations.
GetTestState(ssl.get())->got_new_session = false;
}
if (config->export_keying_material > 0) {
std::vector<uint8_t> result(
static_cast<size_t>(config->export_keying_material));
if (SSL_export_keying_material(
ssl.get(), result.data(), result.size(),
config->export_label.data(), config->export_label.size(),
reinterpret_cast<const uint8_t*>(config->export_context.data()),
config->export_context.size(), config->use_export_context) != 1) {
fprintf(stderr, "failed to export keying material\n");
return false;
}
if (WriteAll(ssl.get(), result.data(), result.size()) < 0) {
return false;
}
}
if (config->write_different_record_sizes) {
if (config->is_dtls) {
fprintf(stderr, "write_different_record_sizes not supported for DTLS\n");
return false;
}
// This mode writes a number of different record sizes in an attempt to
// trip up the CBC record splitting code.
static const size_t kBufLen = 32769;
std::unique_ptr<uint8_t[]> buf(new uint8_t[kBufLen]);
memset(buf.get(), 0x42, kBufLen);
static const size_t kRecordSizes[] = {
0, 1, 255, 256, 257, 16383, 16384, 16385, 32767, 32768, 32769};
for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kRecordSizes); i++) {
const size_t len = kRecordSizes[i];
if (len > kBufLen) {
fprintf(stderr, "Bad kRecordSizes value.\n");
return false;
}
if (WriteAll(ssl.get(), buf.get(), len) < 0) {
return false;
}
}
} else {
if (config->shim_writes_first) {
if (WriteAll(ssl.get(), reinterpret_cast<const uint8_t *>("hello"),
5) < 0) {
return false;
}
}
if (!config->shim_shuts_down) {
for (;;) {
static const size_t kBufLen = 16384;
std::unique_ptr<uint8_t[]> buf(new uint8_t[kBufLen]);
// Read only 512 bytes at a time in TLS to ensure records may be
// returned in multiple reads.
int n = DoRead(ssl.get(), buf.get(), config->is_dtls ? kBufLen : 512);
int err = SSL_get_error(ssl.get(), n);
if (err == SSL_ERROR_ZERO_RETURN ||
(n == 0 && err == SSL_ERROR_SYSCALL)) {
if (n != 0) {
fprintf(stderr, "Invalid SSL_get_error output\n");
return false;
}
// Stop on either clean or unclean shutdown.
break;
} else if (err != SSL_ERROR_NONE) {
if (n > 0) {
fprintf(stderr, "Invalid SSL_get_error output\n");
return false;
}
return false;
}
// Successfully read data.
if (n <= 0) {
fprintf(stderr, "Invalid SSL_get_error output\n");
return false;
}
// After a successful read, with or without False Start, the handshake
// must be complete.
if (!GetTestState(ssl.get())->handshake_done) {
fprintf(stderr, "handshake was not completed after SSL_read\n");
return false;
}
for (int i = 0; i < n; i++) {
buf[i] ^= 0xff;
}
if (WriteAll(ssl.get(), buf.get(), n) < 0) {
return false;
}
}
}
}
if (!config->is_server &&
!config->implicit_handshake &&
// Session tickets are sent post-handshake in TLS 1.3.
GetProtocolVersion(ssl.get()) < TLS1_3_VERSION &&
GetTestState(ssl.get())->got_new_session) {
fprintf(stderr, "new session was established after the handshake\n");
return false;
}
if (GetProtocolVersion(ssl.get()) >= TLS1_3_VERSION && !config->is_server) {
bool expect_new_session =
!config->expect_no_session && !config->shim_shuts_down;
if (expect_new_session != GetTestState(ssl.get())->got_new_session) {
fprintf(stderr,
"new session was%s cached, but we expected the opposite\n",
GetTestState(ssl.get())->got_new_session ? "" : " not");
return false;
}
}
if (out_session) {
*out_session = std::move(GetTestState(ssl.get())->new_session);
}
ret = DoShutdown(ssl.get());
if (config->shim_shuts_down && config->check_close_notify) {
// We initiate shutdown, so |SSL_shutdown| will return in two stages. First
// it returns zero when our close_notify is sent, then one when the peer's
// is received.
if (ret != 0) {
fprintf(stderr, "Unexpected SSL_shutdown result: %d != 0\n", ret);
return false;
}
ret = DoShutdown(ssl.get());
}
if (ret != 1) {
fprintf(stderr, "Unexpected SSL_shutdown result: %d != 1\n", ret);
return false;
}
if (SSL_total_renegotiations(ssl.get()) !=
config->expect_total_renegotiations) {
fprintf(stderr, "Expected %d renegotiations, got %ld\n",
config->expect_total_renegotiations,
SSL_total_renegotiations(ssl.get()));
return false;
}
return true;
}
class StderrDelimiter {
public:
~StderrDelimiter() { fprintf(stderr, "--- DONE ---\n"); }
};
static int Main(int argc, char **argv) {
// To distinguish ASan's output from ours, add a trailing message to stderr.
// Anything following this line will be considered an error.
StderrDelimiter delimiter;
#if defined(OPENSSL_SYS_WINDOWS)
/* Initialize Winsock. */
WORD wsa_version = MAKEWORD(2, 2);
WSADATA wsa_data;
int wsa_err = WSAStartup(wsa_version, &wsa_data);
if (wsa_err != 0) {
fprintf(stderr, "WSAStartup failed: %d\n", wsa_err);
return 1;
}
if (wsa_data.wVersion != wsa_version) {
fprintf(stderr, "Didn't get expected version: %x\n", wsa_data.wVersion);
return 1;
}
#else
signal(SIGPIPE, SIG_IGN);
#endif
OPENSSL_init_crypto(0, NULL);
OPENSSL_init_ssl(0, NULL);
g_config_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL);
g_state_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, TestStateExFree);
if (g_config_index < 0 || g_state_index < 0) {
return 1;
}
TestConfig config;
if (!ParseConfig(argc - 1, argv + 1, &config)) {
return Usage(argv[0]);
}
bssl::UniquePtr<SSL_CTX> ssl_ctx = SetupCtx(&config);
if (!ssl_ctx) {
ERR_print_errors_fp(stderr);
return 1;
}
bssl::UniquePtr<SSL_SESSION> session;
for (int i = 0; i < config.resume_count + 1; i++) {
bool is_resume = i > 0;
if (is_resume && !config.is_server && !session) {
fprintf(stderr, "No session to offer.\n");
return 1;
}
bssl::UniquePtr<SSL_SESSION> offer_session = std::move(session);
if (!DoExchange(&session, ssl_ctx.get(), &config, is_resume,
offer_session.get())) {
fprintf(stderr, "Connection %d failed.\n", i + 1);
ERR_print_errors_fp(stderr);
return 1;
}
}
return 0;
}
} // namespace bssl
int main(int argc, char **argv) {
return bssl::Main(argc, argv);
}