sslapitest.c

        *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)) {
        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;
}

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

    if (argc != 3) {
        printf("Invalid argument count\n");
        return 1;
    }

    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

    testresult = run_tests(argv[0]);

    bio_s_mempacket_test_free();

    return testresult;
}