sslapitest.c

        goto end;
    }

    if (fix.use_int_cache && SSL_CTX_add_session(cctx, sess1)) {
        /* Should have failed because it should already be in the cache */
        printf("Unexpected success adding session to cache\n");
        goto end;
    }

    if (fix.use_ext_cache && (new_called != 1 || remove_called != 0)) {
        printf("Session not added to cache\n");
        goto end;
    }

    if (!create_ssl_objects(sctx, cctx, &serverssl2, &clientssl2, NULL, NULL)) {
        printf("Unable to create second SSL objects\n");
        goto end;
    }

    if (!create_ssl_connection(serverssl2, clientssl2, SSL_ERROR_NONE)) {
        printf("Unable to create second SSL connection\n");
        goto end;
    }

    sess2 = SSL_get1_session(clientssl2);
    if (sess2 == NULL) {
        printf("Unexpected NULL session from clientssl2\n");
        goto end;
    }

    if (fix.use_ext_cache && (new_called != 2 || remove_called != 0)) {
        printf("Remove session callback unexpectedly called\n");
        goto end;
    }

    /*
     * This should clear sess2 from the cache because it is a "bad" session. See
     * SSL_set_session() documentation.
     */
    if (!SSL_set_session(clientssl2, sess1)) {
        printf("Unexpected failure setting session\n");
        goto end;
    }

    if (fix.use_ext_cache && (new_called != 2 || remove_called != 1)) {
        printf("Failed to call callback to remove session\n");
        goto end;
    }


    if (SSL_get_session(clientssl2) != sess1) {
        printf("Unexpected session found\n");
        goto end;
    }

    if (fix.use_int_cache) {
        if (!SSL_CTX_add_session(cctx, sess2)) {
            /*
             * Should have succeeded because it should not already be in the cache
             */
            printf("Unexpected failure adding session to cache\n");
            goto end;
        }

        if (!SSL_CTX_remove_session(cctx, sess2)) {
            printf("Unexpected failure removing session from cache\n");
            goto end;
        }

        /* This is for the purposes of internal cache testing...ignore the
         * counter for external cache
         */
        if (fix.use_ext_cache)
            remove_called--;
    }

    /* This shouldn't be in the cache so should fail */
    if (SSL_CTX_remove_session(cctx, sess2)) {
        printf("Unexpected success removing session from cache\n");
        goto end;
    }

    if (fix.use_ext_cache && (new_called != 2 || remove_called != 2)) {
        printf("Failed to call callback to remove session #2\n");
        goto end;
    }

#if !defined(OPENSSL_NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_2)
    /* Force a connection failure */
    SSL_CTX_set_max_proto_version(sctx, TLS1_1_VERSION);

    if (!create_ssl_objects(sctx, cctx, &serverssl3, &clientssl3, NULL, NULL)) {
        printf("Unable to create third SSL objects\n");
        goto end;
    }

    if (!SSL_set_session(clientssl3, sess1)) {
        printf("Unable to set session for third connection\n");
        goto end;
    }

    /* This should fail because of the mismatched protocol versions */
    if (create_ssl_connection(serverssl3, clientssl3, SSL_ERROR_NONE)) {
        printf("Unable to create third SSL connection\n");
        goto end;
    }


    /* We should have automatically removed the session from the cache */
    if (fix.use_ext_cache && (new_called != 2 || remove_called != 3)) {
        printf("Failed to call callback to remove session #2\n");
        goto end;
    }

    if (fix.use_int_cache && !SSL_CTX_add_session(cctx, sess2)) {
        /*
         * Should have succeeded because it should not already be in the cache
         */
        printf("Unexpected failure adding session to cache #2\n");
        goto end;
    }
#endif

    testresult = 1;

 end:
    SSL_free(serverssl1);
    SSL_free(clientssl1);
    SSL_free(serverssl2);
    SSL_free(clientssl2);
#ifndef OPENSSL_NO_TLS1_1
    SSL_free(serverssl3);
    SSL_free(clientssl3);
#endif
    SSL_SESSION_free(sess1);
    SSL_SESSION_free(sess2);
    /*
     * Check if we need to remove any sessions up-refed for the external cache
     */
    if (new_called >= 1)
        SSL_SESSION_free(sess1);
    if (new_called >= 2)
        SSL_SESSION_free(sess2);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);

    return testresult;
}

static int test_session_with_only_int_cache(void)
{
    SETUP_TEST_FIXTURE(SSL_SESSION_TEST_FIXTURE, ssl_session_set_up);

    fixture.use_ext_cache = 0;

    EXECUTE_TEST(execute_test_session, ssl_session_tear_down);
}

static int test_session_with_only_ext_cache(void)
{
    SETUP_TEST_FIXTURE(SSL_SESSION_TEST_FIXTURE, ssl_session_set_up);

    fixture.use_int_cache = 0;

    EXECUTE_TEST(execute_test_session, ssl_session_tear_down);
}

static int test_session_with_both_cache(void)
{
    SETUP_TEST_FIXTURE(SSL_SESSION_TEST_FIXTURE, ssl_session_set_up);

    EXECUTE_TEST(execute_test_session, ssl_session_tear_down);
}

#define USE_NULL    0
#define USE_BIO_1   1
#define USE_BIO_2   2

#define TOTAL_SSL_SET_BIO_TESTS (3 * 3 * 3 * 3)

static void setupbio(BIO **res, BIO *bio1, BIO *bio2, int type)
{
    switch (type) {
    case USE_NULL:
        *res = NULL;
        break;
    case USE_BIO_1:
        *res = bio1;
        break;
    case USE_BIO_2:
        *res = bio2;
        break;
    }
}

static int test_ssl_set_bio(int idx)
{
    SSL_CTX *ctx = SSL_CTX_new(TLS_method());
    BIO *bio1 = NULL;
    BIO *bio2 = NULL;
    BIO *irbio = NULL, *iwbio = NULL, *nrbio = NULL, *nwbio = NULL;
    SSL *ssl = NULL;
    int initrbio, initwbio, newrbio, newwbio;
    int testresult = 0;

    if (ctx == NULL) {
        printf("Failed to allocate SSL_CTX\n");
        goto end;
    }

    ssl = SSL_new(ctx);
    if (ssl == NULL) {
        printf("Failed to allocate SSL object\n");
        goto end;
    }

    initrbio = idx % 3;
    idx /= 3;
    initwbio = idx % 3;
    idx /= 3;
    newrbio = idx % 3;
    idx /= 3;
    newwbio = idx;
    OPENSSL_assert(newwbio <= 2);

    if (initrbio == USE_BIO_1 || initwbio == USE_BIO_1 || newrbio == USE_BIO_1
            || newwbio == USE_BIO_1) {
        bio1 = BIO_new(BIO_s_mem());
        if (bio1 == NULL) {
            printf("Failed to allocate bio1\n");
            goto end;
        }
    }

    if (initrbio == USE_BIO_2 || initwbio == USE_BIO_2 || newrbio == USE_BIO_2
            || newwbio == USE_BIO_2) {
        bio2 = BIO_new(BIO_s_mem());
        if (bio2 == NULL) {
            printf("Failed to allocate bio2\n");
            goto end;
        }
    }

    setupbio(&irbio, bio1, bio2, initrbio);
    setupbio(&iwbio, bio1, bio2, initwbio);

    /*
     * We want to maintain our own refs to these BIO, so do an up ref for each
     * BIO that will have ownersip transferred in the SSL_set_bio() call
     */
    if (irbio != NULL)
        BIO_up_ref(irbio);
    if (iwbio != NULL && iwbio != irbio)
        BIO_up_ref(iwbio);

    SSL_set_bio(ssl, irbio, iwbio);

    setupbio(&nrbio, bio1, bio2, newrbio);
    setupbio(&nwbio, bio1, bio2, newwbio);

    /*
     * We will (maybe) transfer ownership again so do more up refs.
     * SSL_set_bio() has some really complicated ownership rules where BIOs have
     * already been set!
     */
    if (nrbio != NULL && nrbio != irbio && (nwbio != iwbio || nrbio != nwbio))
        BIO_up_ref(nrbio);
    if (nwbio != NULL && nwbio != nrbio && (nwbio != iwbio || (nwbio == iwbio && irbio == iwbio)))
        BIO_up_ref(nwbio);

    SSL_set_bio(ssl, nrbio, nwbio);

    testresult = 1;

 end:
    SSL_free(ssl);
    BIO_free(bio1);
    BIO_free(bio2);
    /*
     * This test is checking that the ref counting for SSL_set_bio is correct.
     * If we get here and we did too many frees then we will fail in the above
     * functions. If we haven't done enough then this will only be detected in
     * a crypto-mdebug build
     */
    SSL_CTX_free(ctx);

    return testresult;
}

typedef struct ssl_bio_test_fixture {
    const char *test_case_name;
    int pop_ssl;
    enum { NO_BIO_CHANGE, CHANGE_RBIO, CHANGE_WBIO } change_bio;
} SSL_BIO_TEST_FIXTURE;

static SSL_BIO_TEST_FIXTURE ssl_bio_set_up(const char *const test_case_name)
{
    SSL_BIO_TEST_FIXTURE fixture;

    fixture.test_case_name = test_case_name;
    fixture.pop_ssl = 0;
    fixture.change_bio = NO_BIO_CHANGE;

    return fixture;
}

static void ssl_bio_tear_down(SSL_BIO_TEST_FIXTURE fixture)
{
}

static int execute_test_ssl_bio(SSL_BIO_TEST_FIXTURE fix)
{
    BIO *sslbio = NULL, *membio1 = NULL, *membio2 = NULL;
    SSL_CTX *ctx = SSL_CTX_new(TLS_method());
    SSL *ssl = NULL;
    int testresult = 0;

    if (ctx == NULL) {
        printf("Failed to allocate SSL_CTX\n");
        return 0;
    }

    ssl = SSL_new(ctx);
    if (ssl == NULL) {
        printf("Failed to allocate SSL object\n");
        goto end;
    }

    sslbio = BIO_new(BIO_f_ssl());
    membio1 = BIO_new(BIO_s_mem());

    if (sslbio == NULL || membio1 == NULL) {
        printf("Malloc failure creating BIOs\n");
        goto end;
    }

    BIO_set_ssl(sslbio, ssl, BIO_CLOSE);

    /*
     * If anything goes wrong here then we could leak memory, so this will
     * be caught in a crypto-mdebug build
     */
    BIO_push(sslbio, membio1);

    /* Verify chaning the rbio/wbio directly does not cause leaks */
    if (fix.change_bio != NO_BIO_CHANGE) {
        membio2 = BIO_new(BIO_s_mem());
        if (membio2 == NULL) {
            printf("Malloc failure creating membio2\n");
            goto end;
        }
        if (fix.change_bio == CHANGE_RBIO)
            SSL_set0_rbio(ssl, membio2);
        else
            SSL_set0_wbio(ssl, membio2);
    }
    ssl = NULL;

    if (fix.pop_ssl)
        BIO_pop(sslbio);
    else
        BIO_pop(membio1);

    testresult = 1;
 end:
    BIO_free(membio1);
    BIO_free(sslbio);
    SSL_free(ssl);
    SSL_CTX_free(ctx);

    return testresult;
}

static int test_ssl_bio_pop_next_bio(void)
{
    SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);

    EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
}

static int test_ssl_bio_pop_ssl_bio(void)
{
    SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);

    fixture.pop_ssl = 1;

    EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
}

static int test_ssl_bio_change_rbio(void)
{
    SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);

    fixture.change_bio = CHANGE_RBIO;

    EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
}

static int test_ssl_bio_change_wbio(void)
{
    SETUP_TEST_FIXTURE(SSL_BIO_TEST_FIXTURE, ssl_bio_set_up);

    fixture.change_bio = CHANGE_WBIO;

    EXECUTE_TEST(execute_test_ssl_bio, ssl_bio_tear_down);
}

typedef struct {
    /* The list of sig algs */
    const int *list;
    /* The length of the list */
    size_t listlen;
    /* A sigalgs list in string format */
    const char *liststr;
    /* Whether setting the list should succeed */
    int valid;
    /* Whether creating a connection with the list should succeed */
    int connsuccess;
} sigalgs_list;

static const int validlist1[] = {NID_sha256, EVP_PKEY_RSA};
#ifndef OPENSSL_NO_EC
static const int validlist2[] = {NID_sha256, EVP_PKEY_RSA, NID_sha512, EVP_PKEY_EC};
static const int validlist3[] = {NID_sha512, EVP_PKEY_EC};
#endif
static const int invalidlist1[] = {NID_undef, EVP_PKEY_RSA};
static const int invalidlist2[] = {NID_sha256, NID_undef};
static const int invalidlist3[] = {NID_sha256, EVP_PKEY_RSA, NID_sha256};
static const int invalidlist4[] = {NID_sha256};
static const sigalgs_list testsigalgs[] = {
    {validlist1, OSSL_NELEM(validlist1), NULL, 1, 1},
#ifndef OPENSSL_NO_EC
    {validlist2, OSSL_NELEM(validlist2), NULL, 1, 1},
    {validlist3, OSSL_NELEM(validlist3), NULL, 1, 0},
#endif
    {NULL, 0, "RSA+SHA256", 1, 1},
#ifndef OPENSSL_NO_EC
    {NULL, 0, "RSA+SHA256:ECDSA+SHA512", 1, 1},
    {NULL, 0, "ECDSA+SHA512", 1, 0},
#endif
    {invalidlist1, OSSL_NELEM(invalidlist1), NULL, 0, 0},
    {invalidlist2, OSSL_NELEM(invalidlist2), NULL, 0, 0},
    {invalidlist3, OSSL_NELEM(invalidlist3), NULL, 0, 0},
    {invalidlist4, OSSL_NELEM(invalidlist4), NULL, 0, 0},
    {NULL, 0, "RSA", 0, 0},
    {NULL, 0, "SHA256", 0, 0},
    {NULL, 0, "RSA+SHA256:SHA256", 0, 0},
    {NULL, 0, "Invalid", 0, 0}};

static int test_set_sigalgs(int idx)
{
    SSL_CTX *cctx = NULL, *sctx = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    int testresult = 0;
    const sigalgs_list *curr;
    int testctx;

    /* Should never happen */
    if ((size_t)idx >= OSSL_NELEM(testsigalgs) * 2)
        return 0;

    testctx = ((size_t)idx < OSSL_NELEM(testsigalgs));
    curr = testctx ? &testsigalgs[idx]
                   : &testsigalgs[idx - OSSL_NELEM(testsigalgs)];

    if (!create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(), &sctx,
                             &cctx, cert, privkey)) {
        printf("Unable to create SSL_CTX pair\n");
        return 0;
    }

    /*
     * TODO(TLS1.3): These APIs cannot set TLSv1.3 sig algs so we just test it
     * for TLSv1.2 for now until we add a new API.
     */
    SSL_CTX_set_max_proto_version(cctx, TLS1_2_VERSION);

    if (testctx) {
        int ret;
        if (curr->list != NULL)
            ret = SSL_CTX_set1_sigalgs(cctx, curr->list, curr->listlen);
        else
            ret = SSL_CTX_set1_sigalgs_list(cctx, curr->liststr);

        if (!ret) {
            if (curr->valid)
                printf("Unexpected failure setting sigalgs in SSL_CTX (%d)\n",
                       idx);
            else
                testresult = 1;
            goto end;
        }
        if (!curr->valid) {
            printf("Unexpected success setting sigalgs in SSL_CTX (%d)\n", idx);
            goto end;
        }
    }

    if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
        printf("Unable to create SSL objects\n");
        goto end;
    }

    if (!testctx) {
        int ret;

        if (curr->list != NULL)
            ret = SSL_set1_sigalgs(clientssl, curr->list, curr->listlen);
        else
            ret = SSL_set1_sigalgs_list(clientssl, curr->liststr);
        if (!ret) {
            if (curr->valid)
                printf("Unexpected failure setting sigalgs in SSL (%d)\n", idx);
            else
                testresult = 1;
            goto end;
        }
        if (!curr->valid) {
            printf("Unexpected success setting sigalgs in SSL (%d)\n", idx);
            goto end;
        }
    }

    if (curr->connsuccess != create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE)) {
        printf("Unexpected return value creating SSL connection (%d)\n", idx);
        goto end;
    }

    testresult = 1;

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

    return testresult;
}

#ifndef OPENSSL_NO_TLS1_3

#define MSG1    "Hello"
#define MSG2    "World."
#define MSG3    "This"
#define MSG4    "is"
#define MSG5    "a"
#define MSG6    "test."

/*
 * Helper method to setup objects for early data test. Caller frees objects on
 * error.
 */
static int setupearly_data_test(SSL_CTX **cctx, SSL_CTX **sctx, SSL **clientssl,
                                SSL **serverssl, SSL_SESSION **sess)
{
    if (!create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(), sctx,
                             cctx, cert, privkey)) {
        printf("Unable to create SSL_CTX pair\n");
        return 0;
    }

    if (!create_ssl_objects(*sctx, *cctx, serverssl, clientssl, NULL, NULL)) {
        printf("Unable to create SSL objects\n");
        return 0;
    }

    if (!create_ssl_connection(*serverssl, *clientssl, SSL_ERROR_NONE)) {
        printf("Unable to create SSL connection\n");
        return 0;
    }

    *sess = SSL_get1_session(*clientssl);

    SSL_shutdown(*clientssl);
    SSL_shutdown(*serverssl);

    SSL_free(*serverssl);
    SSL_free(*clientssl);
    *serverssl = *clientssl = NULL;

    if (!create_ssl_objects(*sctx, *cctx, serverssl, clientssl, NULL, NULL)) {
        printf("Unable to create SSL objects (2)\n");
        return 0;
    }

    if (!SSL_set_session(*clientssl, *sess)) {
        printf("Failed setting session\n");
        return 0;
    }

    return 1;
}

static int test_early_data_read_write(void)
{
    SSL_CTX *cctx = NULL, *sctx = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    int testresult = 0;
    SSL_SESSION *sess = NULL;
    unsigned char buf[20];
    size_t readbytes, written;

    if (!setupearly_data_test(&cctx, &sctx, &clientssl, &serverssl, &sess))
        goto end;

    /* Write and read some early data */
    if (!SSL_write_early(clientssl, MSG1, strlen(MSG1), &written)
            || written != strlen(MSG1)) {
        printf("Failed writing early data message 1\n");
        goto end;
    }

    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_SUCCESS
            || readbytes != strlen(MSG1)
            || memcmp(MSG1, buf, strlen(MSG1))) {
        printf("Failed reading early data message 1\n");
        goto end;
    }

    if (SSL_get_early_data_status(serverssl) != SSL_EARLY_DATA_ACCEPTED) {
        printf("Unexpected early data status\n");
        goto end;
    }

    /*
     * Server should be able to write normal data, and client should be able to
     * read it.
     */
    if (!SSL_write_ex(serverssl, MSG2, strlen(MSG2), &written)
            || written != strlen(MSG2)) {
        printf("Failed writing message 2\n");
        goto end;
    }

    if (!SSL_read_ex(clientssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG2)
            || memcmp(MSG2, buf, strlen(MSG2))) {
        printf("Failed reading message 2\n");
        goto end;
    }

    /* Even after reading normal data, client should be able write early data */
    if (!SSL_write_early(clientssl, MSG3, strlen(MSG3), &written)
            || written != strlen(MSG3)) {
        printf("Failed writing early data message 3\n");
        goto end;
    }

    /* Server should still be able read early data after writing normal data */
    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_SUCCESS
            || readbytes != strlen(MSG3)
            || memcmp(MSG3, buf, strlen(MSG3))) {
        printf("Failed reading early data message 3\n");
        goto end;
    }

    /* Write more normal data from server and read it from client */
    if (!SSL_write_ex(serverssl, MSG4, strlen(MSG4), &written)
            || written != strlen(MSG4)) {
        printf("Failed writing message 4\n");
        goto end;
    }

    if (!SSL_read_ex(clientssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG4)
            || memcmp(MSG4, buf, strlen(MSG4))) {
        printf("Failed reading message 4\n");
        goto end;
    }

    /*
     * If client writes normal data it should mean writing early data is no
     * longer possible.
     */
    if (!SSL_write_ex(clientssl, MSG5, strlen(MSG5), &written)
            || written != strlen(MSG5)) {
        printf("Failed writing message 5\n");
        goto end;
    }

    if (SSL_get_early_data_status(clientssl) != SSL_EARLY_DATA_ACCEPTED) {
        printf("Unexpected early data status(2)\n");
        goto end;
    }

    /* Server should be told that there is no more early data */
    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_FINISH
            || readbytes != 0) {
        printf("Failed finishing read of early data\n");
        goto end;
    }

    /* Server should be able to read normal data */
    if (!SSL_read_ex(serverssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG5)) {
        printf("Failed reading message 5\n");
        goto end;
    }

    /* Client and server should not be able to write early data now */
    if (SSL_write_early(clientssl, MSG6, strlen(MSG6), &written)) {
        printf("Unexpected success writing early data\n");
        goto end;
    }
    ERR_clear_error();

    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_ERROR) {
        printf("Unexpected success reading early data\n");
        goto end;
    }
    ERR_clear_error();

    /*
     * Make sure we process the NewSessionTicket. This arrives post-handshake
     * so we must make sure we attempt a read - even though we don't expect to
     * actually get any application data.
     */
    if (SSL_read_ex(clientssl, buf, sizeof(buf), &readbytes)) {
        printf("Unexpected success doing final client read\n");
        goto end;
    }

    SSL_SESSION_free(sess);
    sess = SSL_get1_session(clientssl);

    SSL_shutdown(clientssl);
    SSL_shutdown(serverssl);

    SSL_free(serverssl);
    SSL_free(clientssl);
    serverssl = clientssl = NULL;

    if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
        printf("Unable to create SSL objects (3)\n");
        goto end;
    }

    if (!SSL_set_session(clientssl, sess)) {
        printf("Failed setting session (2)\n");
        goto end;
    }

    /* Write and read some early data */
    if (!SSL_write_early(clientssl, MSG1, strlen(MSG1), &written)
            || written != strlen(MSG1)) {
        printf("Failed writing early data message 1\n");
        goto end;
    }

    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_SUCCESS
            || readbytes != strlen(MSG1)
            || memcmp(MSG1, buf, strlen(MSG1))) {
        printf("Failed reading early data message 1\n");
        goto end;
    }

    if (SSL_connect(clientssl) <= 0) {
        printf("Unable to complete client handshake\n");
        goto end;
    }

    /*
     * We expect SSL_accept() to initially block as it handles the end of early
     * data alert
     */
    if (SSL_accept(serverssl) > 0) {
        printf("Unexpected success completing server handshake\n");
        goto end;
    }

    if (SSL_accept(serverssl) <= 0) {
        printf("Unable to complete server handshake\n");
        goto end;
    }

    /* Client and server should not be able to write early data now */
    if (SSL_write_early(clientssl, MSG6, strlen(MSG6), &written)) {
        printf("Unexpected success writing early data (2)\n");
        goto end;
    }
    ERR_clear_error();

    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_ERROR) {
        printf("Unexpected success reading early data (2)\n");
        goto end;
    }
    ERR_clear_error();

    /* Client and server should be able to write/read normal data */
    if (!SSL_write_ex(clientssl, MSG5, strlen(MSG5), &written)
            || written != strlen(MSG5)) {
        printf("Failed writing message 5 (2)\n");
        goto end;
    }

    if (!SSL_read_ex(serverssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG5)) {
        printf("Failed reading message 5 (2)\n");
        goto end;
    }

    testresult = 1;

 end:
    if(!testresult)
        ERR_print_errors_fp(stdout);
    SSL_SESSION_free(sess);
    SSL_free(serverssl);
    SSL_free(clientssl);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);

    return testresult;
}

static int test_early_data_skip(void)
{
    SSL_CTX *cctx = NULL, *sctx = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    int testresult = 0;
    SSL_SESSION *sess;
    unsigned char buf[20];
    size_t readbytes, written;

    /*
     * Test that a server attempting to read early data can handle a connection
     * from a client where the early data is not acceptable.
     */

    if (!setupearly_data_test(&cctx, &sctx, &clientssl, &serverssl, &sess))
        goto end;

    /*
     * Deliberately corrupt the creation time. We take 20 seconds off the time.
     * It could be any value as long as it is not within tolerance. This should
     * mean the ticket is rejected.
     */
    if (!SSL_SESSION_set_time(sess, time(NULL) - 20)) {
        printf("Unexpected failure setting session creation time\n");
        goto end;
    }

    /* Write some early data */
    if (!SSL_write_early(clientssl, MSG1, strlen(MSG1), &written)
            || written != strlen(MSG1)) {
        printf("Failed writing early data message 1\n");
        goto end;
    }

    /* Server should reject the early data and skip over it */
    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_FINISH
            || readbytes != 0) {
        printf("Failed reading early data\n");
        goto end;
    }

    if (SSL_get_early_data_status(serverssl) != SSL_EARLY_DATA_REJECTED) {
        printf("Unexpected early data status\n");
        goto end;
    }

    /*
     * We should be able to send normal data despite rejection of early data
     */
    if (!SSL_write_ex(clientssl, MSG2, strlen(MSG2), &written)
            || written != strlen(MSG2)) {
        printf("Failed writing message 2\n");
        goto end;
    }

    if (SSL_get_early_data_status(clientssl) != SSL_EARLY_DATA_REJECTED) {
        printf("Unexpected early data status (2)\n");
        goto end;
    }

    if (!SSL_read_ex(serverssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG2)
            || memcmp(MSG2, buf, strlen(MSG2))) {
        printf("Failed reading message 2\n");
        goto end;
    }

    testresult = 1;

 end:
    if(!testresult)
        ERR_print_errors_fp(stdout);
    SSL_SESSION_free(sess);
    SSL_free(serverssl);
    SSL_free(clientssl);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);

    return testresult;
}

static int test_early_data_not_sent(void)
{
    SSL_CTX *cctx = NULL, *sctx = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    int testresult = 0;
    SSL_SESSION *sess;
    unsigned char buf[20];
    size_t readbytes, written;

    /*
     * Test that a server attempting to read early data can handle a connection
     * from a client that doesn't send any.
     */

    if (!setupearly_data_test(&cctx, &sctx, &clientssl, &serverssl, &sess))
        goto end;

    /* Write some data - should block due to handshake with server */
    SSL_set_connect_state(clientssl);
    if (SSL_write_ex(clientssl, MSG1, strlen(MSG1), &written)) {
        printf("Unexpected success writing message 1\n");
        goto end;
    }

    /* Server should detect that early data has not been sent */
    if (SSL_read_early(serverssl, buf, sizeof(buf), &readbytes)
                != SSL_READ_EARLY_FINISH
            || readbytes != 0) {
        printf("Failed reading early data\n");
        goto end;
    }

    if (SSL_get_early_data_status(serverssl) != SSL_EARLY_DATA_NOT_SENT) {
        printf("Unexpected early data status\n");
        goto end;
    }

    if (SSL_get_early_data_status(clientssl) != SSL_EARLY_DATA_NOT_SENT) {
        printf("Unexpected early data status (2)\n");
        goto end;
    }

    /* Continue writing the message we started earlier */
    if (!SSL_write_ex(clientssl, MSG1, strlen(MSG1), &written)
            || written != strlen(MSG1)) {
        printf("Failed writing message 1\n");
        goto end;
    }

    if (!SSL_read_ex(serverssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG1)
            || memcmp(MSG1, buf, strlen(MSG1))) {
        printf("Failed reading message 1\n");
        goto end;
    }

    if (!SSL_write_ex(serverssl, MSG2, strlen(MSG2), &written)
            || written != strlen(MSG2)) {
        printf("Failed writing message 2\n");
        goto end;
    }

    /* Should block due to the NewSessionTicket arrival */
    if (SSL_read_ex(clientssl, buf, sizeof(buf), &readbytes)) {
        printf("Unexpected success reading message 2\n");
        goto end;
    }

    if (!SSL_read_ex(clientssl, buf, sizeof(buf), &readbytes)
            || readbytes != strlen(MSG2)
            || memcmp(MSG2, buf, strlen(MSG2))) {
        printf("Failed reading message 2\n");
        goto end;
    }

    testresult = 1;

 end:
    if(!testresult)
        ERR_print_errors_fp(stdout);
    SSL_SESSION_free(sess);
    SSL_free(serverssl);
    SSL_free(clientssl);
    SSL_CTX_free(sctx);
    SSL_CTX_free(cctx);

    return testresult;
}

static int test_early_data_not_expected(void)
{
    SSL_CTX *cctx = NULL, *sctx = NULL;
    SSL *clientssl = NULL, *serverssl = NULL;
    int testresult = 0;
    SSL_SESSION *sess;
    unsigned char buf[20];
    size_t readbytes, written;