sslapitest.c

    const SSL_CIPHER *cipher = NULL;
    const unsigned char key[] = {
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
        0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
        0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
    };
    int testresult = 0;

    if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(),
                                       TLS_client_method(), &sctx,
                                       &cctx, cert, privkey)))
        goto end;

    SSL_CTX_set_psk_use_session_callback(cctx, use_session_cb);
    SSL_CTX_set_psk_find_session_callback(sctx, find_session_cb);
    srvid = pskid;

    /* Check we can create a connection if callback decides not to send a PSK */
    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
                                             NULL, NULL))
            || !TEST_true(create_ssl_connection(serverssl, clientssl,
                                                SSL_ERROR_NONE))
            || !TEST_false(SSL_session_reused(clientssl))
            || !TEST_false(SSL_session_reused(serverssl))
            || !TEST_true(use_session_cb_cnt == 1)
            || !TEST_true(find_session_cb_cnt == 0))
        goto end;

    shutdown_ssl_connection(serverssl, clientssl);
    serverssl = clientssl = NULL;
    use_session_cb_cnt = 0;

    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
                                             NULL, NULL)))
        goto end;

    /* Create the PSK */
    cipher = SSL_CIPHER_find(clientssl, TLS13_AES_256_GCM_SHA384_BYTES);
    psk = SSL_SESSION_new();
    if (!TEST_ptr(psk)
            || !TEST_ptr(cipher)
            || !TEST_true(SSL_SESSION_set1_master_key(psk, key, sizeof(key)))
            || !TEST_true(SSL_SESSION_set_cipher(psk, cipher))
            || !TEST_true(SSL_SESSION_set_protocol_version(psk,
                                                           TLS1_3_VERSION)))
        goto end;

    /* Check we can create a connection and the PSK is used */
    if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE))
            || !TEST_true(SSL_session_reused(clientssl))
            || !TEST_true(SSL_session_reused(serverssl))
            || !TEST_true(use_session_cb_cnt == 1)
            || !TEST_true(find_session_cb_cnt == 1))
        goto end;

    shutdown_ssl_connection(serverssl, clientssl);
    serverssl = clientssl = NULL;
    use_session_cb_cnt = find_session_cb_cnt = 0;

    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
                                             NULL, NULL)))
        goto end;

    /* Force an HRR */
    if (!TEST_true(SSL_set1_groups_list(serverssl, "P-256")))
        goto end;

    /*
     * Check we can create a connection, the PSK is used and the callbacks are
     * called twice.
     */
    if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE))
            || !TEST_true(SSL_session_reused(clientssl))
            || !TEST_true(SSL_session_reused(serverssl))
            || !TEST_true(use_session_cb_cnt == 2)
            || !TEST_true(find_session_cb_cnt == 2))
        goto end;

    shutdown_ssl_connection(serverssl, clientssl);
    serverssl = clientssl = NULL;
    use_session_cb_cnt = find_session_cb_cnt = 0;

    /*
     * Check that if the server rejects the PSK we can still connect, but with
     * a full handshake
     */
    srvid = "Dummy Identity";
    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
                                             NULL, NULL))
            || !TEST_true(create_ssl_connection(serverssl, clientssl,
                                                SSL_ERROR_NONE))
            || !TEST_false(SSL_session_reused(clientssl))
            || !TEST_false(SSL_session_reused(serverssl))
            || !TEST_true(use_session_cb_cnt == 1)
            || !TEST_true(find_session_cb_cnt == 1))
        goto end;

    shutdown_ssl_connection(serverssl, clientssl);
    serverssl = clientssl = NULL;
    testresult = 1;

 end:
    SSL_SESSION_free(psk);
    SSL_free(serverssl);
    SSL_free(clientssl);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);
    return testresult;
}

#endif /* OPENSSL_NO_TLS1_3 */

static int clntaddoldcb = 0;
static int clntparseoldcb = 0;
static int srvaddoldcb = 0;
static int srvparseoldcb = 0;
static int clntaddnewcb = 0;
static int clntparsenewcb = 0;
static int srvaddnewcb = 0;
static int srvparsenewcb = 0;
static int snicb = 0;

#define TEST_EXT_TYPE1  0xff00

static int old_add_cb(SSL *s, unsigned int ext_type, const unsigned char **out,
                      size_t *outlen, int *al, void *add_arg)
{
    int *server = (int *)add_arg;
    unsigned char *data;

    if (SSL_is_server(s))
        srvaddoldcb++;
    else
        clntaddoldcb++;

    if (*server != SSL_is_server(s)
            || (data = OPENSSL_malloc(sizeof(*data))) == NULL)
        return -1;

    *data = 1;
    *out = data;
    *outlen = sizeof(char);
    return 1;
}

static void old_free_cb(SSL *s, unsigned int ext_type, const unsigned char *out,
                        void *add_arg)
{
    OPENSSL_free((unsigned char *)out);
}

static int old_parse_cb(SSL *s, unsigned int ext_type, const unsigned char *in,
                        size_t inlen, int *al, void *parse_arg)
{
    int *server = (int *)parse_arg;

    if (SSL_is_server(s))
        srvparseoldcb++;
    else
        clntparseoldcb++;

    if (*server != SSL_is_server(s)
            || inlen != sizeof(char)
            || *in != 1)
        return -1;

    return 1;
}

static int new_add_cb(SSL *s, unsigned int ext_type, unsigned int context,
                      const unsigned char **out, size_t *outlen, X509 *x,
                      size_t chainidx, int *al, void *add_arg)
{
    int *server = (int *)add_arg;
    unsigned char *data;

    if (SSL_is_server(s))
        srvaddnewcb++;
    else
        clntaddnewcb++;

    if (*server != SSL_is_server(s)
            || (data = OPENSSL_malloc(sizeof(*data))) == NULL)
        return -1;

    *data = 1;
    *out = data;
    *outlen = sizeof(*data);
    return 1;
}

static void new_free_cb(SSL *s, unsigned int ext_type, unsigned int context,
                        const unsigned char *out, void *add_arg)
{
    OPENSSL_free((unsigned char *)out);
}

static int new_parse_cb(SSL *s, unsigned int ext_type, unsigned int context,
                        const unsigned char *in, size_t inlen, X509 *x,
                        size_t chainidx, int *al, void *parse_arg)
{
    int *server = (int *)parse_arg;

    if (SSL_is_server(s))
        srvparsenewcb++;
    else
        clntparsenewcb++;

    if (*server != SSL_is_server(s)
            || inlen != sizeof(char) || *in != 1)
        return -1;

    return 1;
}

static int sni_cb(SSL *s, int *al, void *arg)
{
    SSL_CTX *ctx = (SSL_CTX *)arg;

    if (SSL_set_SSL_CTX(s, ctx) == NULL) {
        *al = SSL_AD_INTERNAL_ERROR;
        return SSL_TLSEXT_ERR_ALERT_FATAL;
    }
    snicb++;
    return SSL_TLSEXT_ERR_OK;
}

/*
 * Custom call back tests.
 * Test 0: Old style callbacks in TLSv1.2
 * Test 1: New style callbacks in TLSv1.2
 * Test 2: New style callbacks in TLSv1.2 with SNI
 * Test 3: New style callbacks in TLSv1.3. Extensions in CH and EE
 * Test 4: New style callbacks in TLSv1.3. Extensions in CH, SH, EE, Cert + NST
 */
static int test_custom_exts(int tst)
{
    SSL_CTX *cctx = NULL, *sctx = NULL, *sctx2 = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    int testresult = 0;
    static int server = 1;
    static int client = 0;
    SSL_SESSION *sess = NULL;
    unsigned int context;

    /* Reset callback counters */
    clntaddoldcb = clntparseoldcb = srvaddoldcb = srvparseoldcb = 0;
    clntaddnewcb = clntparsenewcb = srvaddnewcb = srvparsenewcb = 0;
    snicb = 0;

    if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(),
                                       TLS_client_method(), &sctx,
                                       &cctx, cert, privkey)))
        goto end;

    if (tst == 2
            && !TEST_true(create_ssl_ctx_pair(TLS_server_method(), NULL, &sctx2,
                                              NULL, cert, privkey)))
        goto end;


    if (tst < 3) {
        SSL_CTX_set_options(cctx, SSL_OP_NO_TLSv1_3);
        SSL_CTX_set_options(sctx, SSL_OP_NO_TLSv1_3);
        if (sctx2 != NULL)
            SSL_CTX_set_options(sctx2, SSL_OP_NO_TLSv1_3);
    }

    if (tst == 4) {
        context = SSL_EXT_CLIENT_HELLO
                  | SSL_EXT_TLS1_2_SERVER_HELLO
                  | SSL_EXT_TLS1_3_SERVER_HELLO
                  | SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS
                  | SSL_EXT_TLS1_3_CERTIFICATE
                  | SSL_EXT_TLS1_3_NEW_SESSION_TICKET;
    } else {
        context = SSL_EXT_CLIENT_HELLO
                  | SSL_EXT_TLS1_2_SERVER_HELLO
                  | SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS;
    }

    /* Create a client side custom extension */
    if (tst == 0) {
        if (!TEST_true(SSL_CTX_add_client_custom_ext(cctx, TEST_EXT_TYPE1,
                                                     old_add_cb, old_free_cb,
                                                     &client, old_parse_cb,
                                                     &client)))
            goto end;
    } else {
        if (!TEST_true(SSL_CTX_add_custom_ext(cctx, TEST_EXT_TYPE1, context,
                                              new_add_cb, new_free_cb,
                                              &client, new_parse_cb, &client)))
            goto end;
    }

    /* Should not be able to add duplicates */
    if (!TEST_false(SSL_CTX_add_client_custom_ext(cctx, TEST_EXT_TYPE1,
                                                  old_add_cb, old_free_cb,
                                                  &client, old_parse_cb,
                                                  &client))
            || !TEST_false(SSL_CTX_add_custom_ext(cctx, TEST_EXT_TYPE1,
                                                  context, new_add_cb,
                                                  new_free_cb, &client,
                                                  new_parse_cb, &client)))
        goto end;

    /* Create a server side custom extension */
    if (tst == 0) {
        if (!TEST_true(SSL_CTX_add_server_custom_ext(sctx, TEST_EXT_TYPE1,
                                                     old_add_cb, old_free_cb,
                                                     &server, old_parse_cb,
                                                     &server)))
            goto end;
    } else {
        if (!TEST_true(SSL_CTX_add_custom_ext(sctx, TEST_EXT_TYPE1, context,
                                              new_add_cb, new_free_cb,
                                              &server, new_parse_cb, &server)))
            goto end;
        if (sctx2 != NULL
                && !TEST_true(SSL_CTX_add_custom_ext(sctx2, TEST_EXT_TYPE1,
                                                     context, new_add_cb,
                                                     new_free_cb, &server,
                                                     new_parse_cb, &server)))
            goto end;
    }

    /* Should not be able to add duplicates */
    if (!TEST_false(SSL_CTX_add_server_custom_ext(sctx, TEST_EXT_TYPE1,
                                                  old_add_cb, old_free_cb,
                                                  &server, old_parse_cb,
                                                  &server))
            || !TEST_false(SSL_CTX_add_custom_ext(sctx, TEST_EXT_TYPE1,
                                                  context, new_add_cb,
                                                  new_free_cb, &server,
                                                  new_parse_cb, &server)))
        goto end;

    if (tst == 2) {
        /* Set up SNI */
        if (!TEST_true(SSL_CTX_set_tlsext_servername_callback(sctx, sni_cb))
                || !TEST_true(SSL_CTX_set_tlsext_servername_arg(sctx, sctx2)))
            goto end;
    }

    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl,
                                      &clientssl, NULL, NULL))
            || !TEST_true(create_ssl_connection(serverssl, clientssl,
                                                SSL_ERROR_NONE)))
        goto end;

    if (tst == 0) {
        if (clntaddoldcb != 1
                || clntparseoldcb != 1
                || srvaddoldcb != 1
                || srvparseoldcb != 1)
            goto end;
    } else if (tst == 1 || tst == 2 || tst == 3) {
        if (clntaddnewcb != 1
                || clntparsenewcb != 1
                || srvaddnewcb != 1
                || srvparsenewcb != 1
                || (tst != 2 && snicb != 0)
                || (tst == 2 && snicb != 1))
            goto end;
    } else {
        if (clntaddnewcb != 1
                || clntparsenewcb != 4
                || srvaddnewcb != 4
                || srvparsenewcb != 1)
            goto end;
    }

    sess = SSL_get1_session(clientssl);
    SSL_shutdown(clientssl);
    SSL_shutdown(serverssl);
    SSL_free(serverssl);
    SSL_free(clientssl);
    serverssl = clientssl = NULL;

    if (tst == 3) {
        /* We don't bother with the resumption aspects for this test */
        testresult = 1;
        goto end;
    }

    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
                                      NULL, NULL))
            || !TEST_true(SSL_set_session(clientssl, sess))
            || !TEST_true(create_ssl_connection(serverssl, clientssl,
                                               SSL_ERROR_NONE)))
        goto end;

    /*
     * For a resumed session we expect to add the ClientHello extension. For the
     * old style callbacks we ignore it on the server side because they set
     * SSL_EXT_IGNORE_ON_RESUMPTION. The new style callbacks do not ignore
     * them.
     */
    if (tst == 0) {
        if (clntaddoldcb != 2
                || clntparseoldcb != 1
                || srvaddoldcb != 1
                || srvparseoldcb != 1)
            goto end;
    } else if (tst == 1 || tst == 2 || tst == 3) {
        if (clntaddnewcb != 2
                || clntparsenewcb != 2
                || srvaddnewcb != 2
                || srvparsenewcb != 2)
            goto end;
    } else {
        /* No Certificate message extensions in the resumption handshake */
        if (clntaddnewcb != 2
                || clntparsenewcb != 7
                || srvaddnewcb != 7
                || srvparsenewcb != 2)
            goto end;
    }

    testresult = 1;

end:
    SSL_SESSION_free(sess);
    SSL_free(serverssl);
    SSL_free(clientssl);
    SSL_CTX_free(sctx2);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);
    return testresult;
}

/*
 * Test loading of serverinfo data in various formats. test_sslmessages actually
 * tests to make sure the extensions appear in the handshake
 */
static int test_serverinfo(int tst)
{
    unsigned int version;
    unsigned char *sibuf;
    size_t sibuflen;
    int ret, expected, testresult = 0;
    SSL_CTX *ctx;

    ctx = SSL_CTX_new(TLS_method());
    if (!TEST_ptr(ctx))
        goto end;

    if ((tst & 0x01) == 0x01)
        version = SSL_SERVERINFOV2;
    else
        version = SSL_SERVERINFOV1;

    if ((tst & 0x02) == 0x02) {
        sibuf = serverinfov2;
        sibuflen = sizeof(serverinfov2);
        expected = (version == SSL_SERVERINFOV2);
    } else {
        sibuf = serverinfov1;
        sibuflen = sizeof(serverinfov1);
        expected = (version == SSL_SERVERINFOV1);
    }

    if ((tst & 0x04) == 0x04) {
        ret = SSL_CTX_use_serverinfo_ex(ctx, version, sibuf, sibuflen);
    } else {
        ret = SSL_CTX_use_serverinfo(ctx, sibuf, sibuflen);

        /*
         * The version variable is irrelevant in this case - it's what is in the
         * buffer that matters
         */
        if ((tst & 0x02) == 0x02)
            expected = 0;
        else
            expected = 1;
    }

    if (!TEST_true(ret == expected))
        goto end;

    testresult = 1;

 end:
    SSL_CTX_free(ctx);

    return testresult;
}

/*
 * Test that SSL_export_keying_material() produces expected results. There are
 * no test vectors so all we do is test that both sides of the communication
 * produce the same results for different protocol versions.
 */
static int test_export_key_mat(int tst)
{
    int testresult = 0;
    SSL_CTX *cctx = NULL, *sctx = NULL, *sctx2 = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    const char label[] = "test label";
    const unsigned char context[] = "context";
    const unsigned char *emptycontext = NULL;
    unsigned char ckeymat1[80], ckeymat2[80], ckeymat3[80];
    unsigned char skeymat1[80], skeymat2[80], skeymat3[80];
    const int protocols[] = {
        TLS1_VERSION,
        TLS1_1_VERSION,
        TLS1_2_VERSION,
        TLS1_3_VERSION
    };

#ifdef OPENSSL_NO_TLS1
    if (tst == 0)
        return 1;
#endif
#ifdef OPENSSL_NO_TLS1_1
    if (tst == 1)
        return 1;
#endif
#ifdef OPENSSL_NO_TLS1_2
    if (tst == 2)
        return 1;
#endif
#ifdef OPENSSL_NO_TLS1_3
    if (tst == 3)
        return 1;
#endif
    if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(),
                                       TLS_client_method(), &sctx,
                                       &cctx, cert, privkey)))
        goto end;

    OPENSSL_assert(tst >= 0 && (size_t)tst < OSSL_NELEM(protocols));
    SSL_CTX_set_max_proto_version(cctx, protocols[tst]);
    SSL_CTX_set_min_proto_version(cctx, protocols[tst]);

    if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL,
                                      NULL))
            || !TEST_true(create_ssl_connection(serverssl, clientssl,
                                                SSL_ERROR_NONE)))
        goto end;

    if (!TEST_int_eq(SSL_export_keying_material(clientssl, ckeymat1,
                                                sizeof(ckeymat1), label,
                                                sizeof(label) - 1, context,
                                                sizeof(context) - 1, 1), 1)
            || !TEST_int_eq(SSL_export_keying_material(clientssl, ckeymat2,
                                                       sizeof(ckeymat2), label,
                                                       sizeof(label) - 1,
                                                       emptycontext,
                                                       0, 1), 1)
            || !TEST_int_eq(SSL_export_keying_material(clientssl, ckeymat3,
                                                       sizeof(ckeymat3), label,
                                                       sizeof(label) - 1,
                                                       NULL, 0, 0), 1)
            || !TEST_int_eq(SSL_export_keying_material(serverssl, skeymat1,
                                                       sizeof(skeymat1), label,
                                                       sizeof(label) - 1,
                                                       context,
                                                       sizeof(context) -1, 1),
                            1)
            || !TEST_int_eq(SSL_export_keying_material(serverssl, skeymat2,
                                                       sizeof(skeymat2), label,
                                                       sizeof(label) - 1,
                                                       emptycontext,
                                                       0, 1), 1)
            || !TEST_int_eq(SSL_export_keying_material(serverssl, skeymat3,
                                                       sizeof(skeymat3), label,
                                                       sizeof(label) - 1,
                                                       NULL, 0, 0), 1)
               /*
                * Check that both sides created the same key material with the
                * same context.
                */
            || !TEST_mem_eq(ckeymat1, sizeof(ckeymat1), skeymat1,
                            sizeof(skeymat1))
               /*
                * Check that both sides created the same key material with an
                * empty context.
                */
            || !TEST_mem_eq(ckeymat2, sizeof(ckeymat2), skeymat2,
                            sizeof(skeymat2))
               /*
                * Check that both sides created the same key material without a
                * context.
                */
            || !TEST_mem_eq(ckeymat3, sizeof(ckeymat3), skeymat3,
                            sizeof(skeymat3))
               /* Different contexts should produce different results */
            || !TEST_mem_ne(ckeymat1, sizeof(ckeymat1), ckeymat2,
                            sizeof(ckeymat2)))
        goto end;

    /*
     * Check that an empty context and no context produce different results in
     * protocols less than TLSv1.3. In TLSv1.3 they should be the same.
     */
    if ((tst != 3 && !TEST_mem_ne(ckeymat2, sizeof(ckeymat2), ckeymat3,
                                  sizeof(ckeymat3)))
            || (tst ==3 && !TEST_mem_eq(ckeymat2, sizeof(ckeymat2), ckeymat3,
                                        sizeof(ckeymat3))))
        goto end;

    testresult = 1;

 end:
    SSL_free(serverssl);
    SSL_free(clientssl);
    SSL_CTX_free(sctx2);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);

    return testresult;
}

int test_main(int argc, char *argv[])
{
    int testresult = 1;

    if (argc != 3) {
        TEST_error("Wrong argument count");
        return 0;
    }

    cert = argv[1];
    privkey = argv[2];

    ADD_TEST(test_large_message_tls);
    ADD_TEST(test_large_message_tls_read_ahead);
#ifndef OPENSSL_NO_DTLS
    ADD_TEST(test_large_message_dtls);
#endif
#ifndef OPENSSL_NO_OCSP
    ADD_TEST(test_tlsext_status_type);
#endif
    ADD_TEST(test_session_with_only_int_cache);
    ADD_TEST(test_session_with_only_ext_cache);
    ADD_TEST(test_session_with_both_cache);
    ADD_ALL_TESTS(test_ssl_set_bio, TOTAL_SSL_SET_BIO_TESTS);
    ADD_TEST(test_ssl_bio_pop_next_bio);
    ADD_TEST(test_ssl_bio_pop_ssl_bio);
    ADD_TEST(test_ssl_bio_change_rbio);
    ADD_TEST(test_ssl_bio_change_wbio);
    ADD_ALL_TESTS(test_set_sigalgs, OSSL_NELEM(testsigalgs) * 2);
    ADD_TEST(test_keylog);
#ifndef OPENSSL_NO_TLS1_3
    ADD_TEST(test_keylog_no_master_key);
#endif
#ifndef OPENSSL_NO_TLS1_2
    ADD_TEST(test_early_cb);
#endif
#ifndef OPENSSL_NO_TLS1_3
    ADD_ALL_TESTS(test_early_data_read_write, 2);
    ADD_ALL_TESTS(test_early_data_skip, 2);
    ADD_ALL_TESTS(test_early_data_not_sent, 2);
    ADD_ALL_TESTS(test_early_data_not_expected, 2);
# ifndef OPENSSL_NO_TLS1_2
    ADD_ALL_TESTS(test_early_data_tls1_2, 2);
# endif
#endif
#ifndef OPENSSL_NO_TLS1_3
    ADD_TEST(test_ciphersuite_change);
    ADD_TEST(test_tls13_psk);
    ADD_ALL_TESTS(test_custom_exts, 5);
#else
    ADD_ALL_TESTS(test_custom_exts, 3);
#endif
    ADD_ALL_TESTS(test_serverinfo, 8);
    ADD_ALL_TESTS(test_export_key_mat, 4);

    testresult = run_tests(argv[0]);

    bio_s_mempacket_test_free();

    return testresult;
}