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wolfssl/tests/api/test_tls_ext.c
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Eric Blankenhorn be7f934157 Add test case
2026-02-26 10:18:31 -06:00

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/* test_tls_ext.c
*
* Copyright (C) 2006-2026 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#include <tests/unit.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#define WOLFSSL_MISC_INCLUDED
#include <wolfcrypt/src/misc.c>
#endif
#include <wolfssl/internal.h>
#include <tests/utils.h>
#include <tests/api/test_tls_ext.h>
int test_tls_ems_downgrade(void)
{
EXPECT_DECLS;
#if defined(WOLFSSL_TLS13) && !defined(WOLFSSL_NO_TLS12) && \
defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES) && \
defined(HAVE_SESSION_TICKET) && !defined(WOLFSSL_NO_DEF_TICKET_ENC_CB)
struct test_memio_ctx test_ctx;
WOLFSSL_CTX *ctx_c = NULL;
WOLFSSL_CTX *ctx_s = NULL;
WOLFSSL *ssl_c = NULL;
WOLFSSL *ssl_s = NULL;
WOLFSSL_SESSION* session = NULL;
/* TLS EMS extension in binary form */
const char ems_ext[] = { 0x00, 0x17, 0x00, 0x00 };
char data = 0;
XMEMSET(&test_ctx, 0, sizeof(test_ctx));
ExpectIntEQ(test_memio_setup(&test_ctx, &ctx_c, &ctx_s, &ssl_c, &ssl_s,
wolfTLS_client_method, wolfTLS_server_method), 0);
ExpectIntEQ(wolfSSL_connect(ssl_c), -1);
ExpectIntEQ(wolfSSL_get_error(ssl_c, -1), WOLFSSL_ERROR_WANT_READ);
/* Verify that the EMS extension is present in Client's message */
ExpectNotNull(mymemmem(test_ctx.s_buff, test_ctx.s_len,
ems_ext, sizeof(ems_ext)));
ExpectIntEQ(test_memio_do_handshake(ssl_c, ssl_s, 10, NULL), 0);
ExpectIntEQ(wolfSSL_version(ssl_c), TLS1_3_VERSION);
/* Do a round of reads to exchange the ticket message */
ExpectIntEQ(wolfSSL_read(ssl_s, &data, sizeof(data)), -1);
ExpectIntEQ(wolfSSL_get_error(ssl_s, -1), WOLFSSL_ERROR_WANT_READ);
ExpectIntEQ(wolfSSL_read(ssl_c, &data, sizeof(data)), -1);
ExpectIntEQ(wolfSSL_get_error(ssl_c, -1), WOLFSSL_ERROR_WANT_READ);
ExpectNotNull(session = wolfSSL_get1_session(ssl_c));
ExpectTrue(session->haveEMS);
wolfSSL_free(ssl_c);
ssl_c = NULL;
wolfSSL_free(ssl_s);
ssl_s = NULL;
ExpectIntEQ(test_memio_setup(&test_ctx, &ctx_c, &ctx_s, &ssl_c, &ssl_s,
wolfTLS_client_method, wolfTLS_server_method), 0);
/* Resuming the connection */
ExpectIntEQ(wolfSSL_set_session(ssl_c, session), WOLFSSL_SUCCESS);
ExpectIntEQ(wolfSSL_connect(ssl_c), -1);
ExpectIntEQ(wolfSSL_get_error(ssl_c, -1), WOLFSSL_ERROR_WANT_READ);
/* Verify that the EMS extension is still present in the resumption CH
* even though we used TLS 1.3 */
ExpectNotNull(mymemmem(test_ctx.s_buff, test_ctx.s_len,
ems_ext, sizeof(ems_ext)));
ExpectIntEQ(test_memio_do_handshake(ssl_c, ssl_s, 10, NULL), 0);
ExpectIntEQ(wolfSSL_version(ssl_c), TLS1_3_VERSION);
wolfSSL_SESSION_free(session);
wolfSSL_free(ssl_c);
wolfSSL_free(ssl_s);
wolfSSL_CTX_free(ctx_c);
wolfSSL_CTX_free(ctx_s);
#endif
return EXPECT_RESULT();
}
int test_wolfSSL_DisableExtendedMasterSecret(void)
{
EXPECT_DECLS;
#if defined(HAVE_EXTENDED_MASTER) && !defined(NO_WOLFSSL_CLIENT) && \
!defined(NO_TLS)
WOLFSSL_CTX *ctx = wolfSSL_CTX_new(wolfSSLv23_client_method());
WOLFSSL *ssl = wolfSSL_new(ctx);
ExpectNotNull(ctx);
ExpectNotNull(ssl);
/* error cases */
ExpectIntNE(WOLFSSL_SUCCESS, wolfSSL_CTX_DisableExtendedMasterSecret(NULL));
ExpectIntNE(WOLFSSL_SUCCESS, wolfSSL_DisableExtendedMasterSecret(NULL));
/* success cases */
ExpectIntEQ(WOLFSSL_SUCCESS, wolfSSL_CTX_DisableExtendedMasterSecret(ctx));
ExpectIntEQ(WOLFSSL_SUCCESS, wolfSSL_DisableExtendedMasterSecret(ssl));
wolfSSL_free(ssl);
wolfSSL_CTX_free(ctx);
#endif
return EXPECT_RESULT();
}
#if !defined(NO_WOLFSSL_CLIENT) && !defined(NO_WOLFSSL_SERVER) && \
!defined(WOLFSSL_NO_CA_NAMES) && !defined(NO_BIO) && \
!defined(NO_CERTS) && !defined(NO_TLS) && (defined(OPENSSL_EXTRA) || \
defined(OPENSSL_EXTRA_X509_SMALL)) && (defined(OPENSSL_ALL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY)) && \
(defined(WOLFSSL_TLS13) || !defined(WOLFSSL_NO_TLS12)) && \
defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES)
struct client_cb_arg {
WOLF_STACK_OF(X509_NAME) *names1;
WOLF_STACK_OF(X509_NAME) *names2;
};
static int certificate_authorities_client_cb(WOLFSSL *ssl, void *_arg) {
struct client_cb_arg *arg = (struct client_cb_arg *)_arg;
arg->names1 = wolfSSL_get_client_CA_list(ssl);
arg->names2 = wolfSSL_get0_peer_CA_list(ssl);
if (!wolfSSL_use_certificate_file(ssl, cliCertFile, SSL_FILETYPE_PEM))
return 0;
if (!wolfSSL_use_PrivateKey_file(ssl, cliKeyFile, SSL_FILETYPE_PEM))
return 0;
return 1;
}
#endif
int test_certificate_authorities_certificate_request(void) {
EXPECT_DECLS;
#if !defined(NO_WOLFSSL_CLIENT) && !defined(NO_WOLFSSL_SERVER) && \
!defined(WOLFSSL_NO_CA_NAMES) && !defined(NO_BIO) && \
!defined(NO_CERTS) && !defined(NO_TLS) && (defined(OPENSSL_EXTRA) || \
defined(OPENSSL_EXTRA_X509_SMALL)) && (defined(OPENSSL_ALL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY)) && \
(defined(WOLFSSL_TLS13) || !defined(WOLFSSL_NO_TLS12)) && \
defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES)
struct test_params {
method_provider client_meth;
method_provider server_meth;
int doUdp;
} params[] = {
#ifdef WOLFSSL_TLS13
/* TLS 1.3 uses certificate_authorities extension */
{wolfTLSv1_3_client_method, wolfTLSv1_3_server_method, 0},
#endif
#if !defined(WOLFSSL_NO_TLS12) && (defined(OPENSSL_ALL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY))
/* TLS 1.2 directly embeds CA names in CertificateRequest */
{wolfTLSv1_2_client_method, wolfTLSv1_2_server_method, 0},
#endif
#ifdef WOLFSSL_DTLS13
{wolfDTLSv1_3_client_method, wolfDTLSv1_3_server_method, 1},
#endif
#if defined(WOLFSSL_DTLS) && (defined(OPENSSL_ALL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY))
{wolfDTLSv1_2_client_method, wolfDTLSv1_2_server_method, 1},
#endif
};
size_t i;
for (i = 0; i < sizeof(params) / sizeof(*params); i++) {
struct test_memio_ctx test_ctx;
WOLFSSL_CTX *ctx_srv = NULL;
WOLFSSL *ssl_srv = NULL;
WOLFSSL_CTX *ctx_cli = NULL;
WOLFSSL *ssl_cli = NULL;
WOLF_STACK_OF(X509_NAME) *names1 = NULL, *names2 = NULL;
X509_NAME *name = NULL;
struct client_cb_arg cb_arg = { NULL, NULL };
const char *expected_names[] = {
"/C=US/ST=Montana/L=Bozeman/O=wolfSSL_2048/OU=Programming-2048"
"/CN=www.wolfssl.com/emailAddress=info@wolfssl.com",
"/C=US/ST=Montana/L=Bozeman/O=Sawtooth/OU=Consulting"
"/CN=www.wolfssl.com/emailAddress=info@wolfssl.com"
};
if (EXPECT_FAIL())
break;
XMEMSET(&test_ctx, 0, sizeof(test_ctx));
ExpectIntEQ(0, test_memio_setup(&test_ctx, &ctx_cli, &ctx_srv,
&ssl_cli, NULL, params[i].client_meth,
params[i].server_meth));
wolfSSL_CTX_set_verify(ctx_srv,
SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
ExpectIntEQ(WOLFSSL_SUCCESS,
wolfSSL_CTX_load_verify_locations(ctx_srv, cliCertFile, NULL));
ExpectNotNull(ssl_srv = wolfSSL_new(ctx_srv));
wolfSSL_SetIOReadCtx(ssl_srv, &test_ctx);
wolfSSL_SetIOWriteCtx(ssl_srv, &test_ctx);
names1 = wolfSSL_load_client_CA_file(cliCertFile);
ExpectNotNull(names1);
names2 = wolfSSL_load_client_CA_file(caCertFile);
ExpectNotNull(names2);
ExpectNotNull(name = wolfSSL_sk_X509_NAME_value(names2, 0));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_push(names1, name));
if (EXPECT_FAIL()) {
wolfSSL_X509_NAME_free(name);
name = NULL;
}
wolfSSL_sk_X509_NAME_free(names2);
names2 = wolfSSL_load_client_CA_file(caCertFile);
ExpectNotNull(names2);
/* Check that client_CA_list and CA_list are separate internally */
wolfSSL_CTX_set_client_CA_list(ctx_srv, names1);
wolfSSL_CTX_set0_CA_list(ctx_srv, names2);
ExpectNotNull(names1 = wolfSSL_CTX_get_client_CA_list(ctx_srv));
ExpectNotNull(names2 = wolfSSL_CTX_get0_CA_list(ctx_srv));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_num(names1));
ExpectIntEQ(1, wolfSSL_sk_X509_NAME_num(names2));
/* Check that get_client_CA_list and get0_CA_list on ssl return same as
* ctx when not set */
ExpectNotNull(names1 = wolfSSL_get_client_CA_list(ssl_srv));
ExpectNotNull(names2 = wolfSSL_get0_CA_list(ssl_srv));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_num(names1));
ExpectIntEQ(1, wolfSSL_sk_X509_NAME_num(names2));
/* Same checks as before, but on ssl rather than ctx */
names1 = wolfSSL_load_client_CA_file(cliCertFile);
ExpectNotNull(names1);
names2 = wolfSSL_load_client_CA_file(caCertFile);
ExpectNotNull(names2);
ExpectNotNull(name = wolfSSL_sk_X509_NAME_value(names2, 0));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_push(names1, name));
if (EXPECT_FAIL()) {
wolfSSL_X509_NAME_free(name);
name = NULL;
}
wolfSSL_sk_X509_NAME_free(names2);
names2 = wolfSSL_load_client_CA_file(caCertFile);
ExpectNotNull(names2);
wolfSSL_set_client_CA_list(ssl_srv, names1);
wolfSSL_set0_CA_list(ssl_srv, names2);
ExpectNotNull(names1 = wolfSSL_get_client_CA_list(ssl_srv));
ExpectNotNull(names2 = wolfSSL_get0_CA_list(ssl_srv));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_num(names1));
ExpectIntEQ(1, wolfSSL_sk_X509_NAME_num(names2));
#if !defined(NO_DH)
SetDH(ssl_srv);
#endif
/* Certs will be loaded in callback */
wolfSSL_CTX_set_cert_cb(ctx_cli,
certificate_authorities_client_cb, &cb_arg);
ExpectIntEQ(0, test_memio_do_handshake(ssl_cli, ssl_srv, 10, NULL));
ExpectNotNull(cb_arg.names1);
ExpectNotNull(cb_arg.names2);
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_num(cb_arg.names1));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_num(cb_arg.names2));
if (EXPECT_SUCCESS()) {
ExpectStrEQ(wolfSSL_sk_X509_NAME_value(cb_arg.names1, 0)->name,
expected_names[0]);
ExpectStrEQ(wolfSSL_sk_X509_NAME_value(cb_arg.names1, 1)->name,
expected_names[1]);
}
wolfSSL_shutdown(ssl_cli);
wolfSSL_free(ssl_cli);
wolfSSL_CTX_free(ctx_cli);
wolfSSL_free(ssl_srv);
wolfSSL_CTX_free(ctx_srv);
}
#endif
return EXPECT_RESULT();
}
#if !defined(NO_WOLFSSL_CLIENT) && !defined(NO_WOLFSSL_SERVER) && \
!defined(WOLFSSL_NO_CA_NAMES) && !defined(NO_BIO) && \
!defined(NO_CERTS) && (defined(OPENSSL_EXTRA) || \
defined(OPENSSL_EXTRA_X509_SMALL)) && (defined(OPENSSL_ALL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY)) && \
defined(WOLFSSL_TLS13) && defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES)
static int certificate_authorities_server_cb(WOLFSSL *ssl, void *_arg) {
WOLF_STACK_OF(X509_NAME) **names_out = (WOLF_STACK_OF(X509_NAME) **)_arg;
WOLF_STACK_OF(X509_NAME) *names = wolfSSL_get0_peer_CA_list(ssl);
*names_out = names;
if (!wolfSSL_use_certificate_file(ssl, svrCertFile, SSL_FILETYPE_PEM))
return 0;
if (!wolfSSL_use_PrivateKey_file(ssl, svrKeyFile, SSL_FILETYPE_PEM))
return 0;
return 1;
}
#endif
#if defined(HAVE_TRUSTED_CA) && !defined(NO_SHA) && \
defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES) && \
!defined(NO_WOLFSSL_SERVER) && !defined(NO_WOLFSSL_CLIENT)
/* Walk the TLSX list to find an extension by type. Avoids calling the
* WOLFSSL_LOCAL TLSX_Find which is not available in shared library builds. */
static TLSX* test_TLSX_find_ext(TLSX* list, TLSX_Type type)
{
while (list) {
if (list->type == type)
return list;
list = list->next;
}
return NULL;
}
#endif
int test_TLSX_TCA_Find(void)
{
EXPECT_DECLS;
#if defined(HAVE_TRUSTED_CA) && !defined(NO_SHA) && \
defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES) && \
!defined(NO_WOLFSSL_SERVER) && !defined(NO_WOLFSSL_CLIENT)
/* Two different 20-byte SHA1 ids */
byte id_A[WC_SHA_DIGEST_SIZE];
byte id_B[WC_SHA_DIGEST_SIZE];
TLSX* ext;
XMEMSET(id_A, 0xAA, sizeof(id_A));
XMEMSET(id_B, 0xBB, sizeof(id_B));
/* Test 1: Exact match - same type and same id should match */
{
struct test_memio_ctx test_ctx;
WOLFSSL_CTX *ctx_c = NULL, *ctx_s = NULL;
WOLFSSL *ssl_c = NULL, *ssl_s = NULL;
XMEMSET(&test_ctx, 0, sizeof(test_ctx));
ExpectIntEQ(test_memio_setup(&test_ctx, &ctx_c, &ctx_s, &ssl_c,
&ssl_s, wolfTLSv1_2_client_method, wolfTLSv1_2_server_method), 0);
/* Server has KEY_SHA1 with id_A */
ExpectIntEQ(wolfSSL_UseTrustedCA(ssl_s, WOLFSSL_TRUSTED_CA_KEY_SHA1,
id_A, sizeof(id_A)), WOLFSSL_SUCCESS);
/* Client sends KEY_SHA1 with id_A (same) */
ExpectIntEQ(wolfSSL_UseTrustedCA(ssl_c, WOLFSSL_TRUSTED_CA_KEY_SHA1,
id_A, sizeof(id_A)), WOLFSSL_SUCCESS);
ExpectIntEQ(test_memio_do_handshake(ssl_c, ssl_s, 10, NULL), 0);
/* Server should have found a match and responded */
ext = test_TLSX_find_ext(ssl_c ? ssl_c->extensions : NULL,
TLSX_TRUSTED_CA_KEYS);
ExpectNotNull(ext);
if (EXPECT_SUCCESS())
ExpectIntEQ(ext->resp, 1);
wolfSSL_free(ssl_c);
wolfSSL_free(ssl_s);
wolfSSL_CTX_free(ctx_c);
wolfSSL_CTX_free(ctx_s);
}
/* Test 2: Same type, different id - should NOT match.
* This is the key test that exposes the logic bug in TLSX_TCA_Find
* where matching on type alone (without checking id content) causes
* a false positive. */
{
struct test_memio_ctx test_ctx;
WOLFSSL_CTX *ctx_c = NULL, *ctx_s = NULL;
WOLFSSL *ssl_c = NULL, *ssl_s = NULL;
XMEMSET(&test_ctx, 0, sizeof(test_ctx));
ExpectIntEQ(test_memio_setup(&test_ctx, &ctx_c, &ctx_s, &ssl_c,
&ssl_s, wolfTLSv1_2_client_method, wolfTLSv1_2_server_method), 0);
/* Server has KEY_SHA1 with id_A */
ExpectIntEQ(wolfSSL_UseTrustedCA(ssl_s, WOLFSSL_TRUSTED_CA_KEY_SHA1,
id_A, sizeof(id_A)), WOLFSSL_SUCCESS);
/* Client sends KEY_SHA1 with id_B (different!) */
ExpectIntEQ(wolfSSL_UseTrustedCA(ssl_c, WOLFSSL_TRUSTED_CA_KEY_SHA1,
id_B, sizeof(id_B)), WOLFSSL_SUCCESS);
ExpectIntEQ(test_memio_do_handshake(ssl_c, ssl_s, 10, NULL), 0);
/* Server should NOT have found a match - ids differ */
ext = test_TLSX_find_ext(ssl_c ? ssl_c->extensions : NULL,
TLSX_TRUSTED_CA_KEYS);
ExpectNotNull(ext);
if (EXPECT_SUCCESS())
ExpectIntEQ(ext->resp, 0);
wolfSSL_free(ssl_c);
wolfSSL_free(ssl_s);
wolfSSL_CTX_free(ctx_c);
wolfSSL_CTX_free(ctx_s);
}
/* Test 3: PRE_AGREED should match any server entry */
{
struct test_memio_ctx test_ctx;
WOLFSSL_CTX *ctx_c = NULL, *ctx_s = NULL;
WOLFSSL *ssl_c = NULL, *ssl_s = NULL;
XMEMSET(&test_ctx, 0, sizeof(test_ctx));
ExpectIntEQ(test_memio_setup(&test_ctx, &ctx_c, &ctx_s, &ssl_c,
&ssl_s, wolfTLSv1_2_client_method, wolfTLSv1_2_server_method), 0);
/* Server has KEY_SHA1 with id_A */
ExpectIntEQ(wolfSSL_UseTrustedCA(ssl_s, WOLFSSL_TRUSTED_CA_KEY_SHA1,
id_A, sizeof(id_A)), WOLFSSL_SUCCESS);
/* Client sends PRE_AGREED (no id needed) */
ExpectIntEQ(wolfSSL_UseTrustedCA(ssl_c, WOLFSSL_TRUSTED_CA_PRE_AGREED,
NULL, 0), WOLFSSL_SUCCESS);
ExpectIntEQ(test_memio_do_handshake(ssl_c, ssl_s, 10, NULL), 0);
/* Server should have matched (PRE_AGREED matches anything) */
ext = test_TLSX_find_ext(ssl_c ? ssl_c->extensions : NULL,
TLSX_TRUSTED_CA_KEYS);
ExpectNotNull(ext);
if (EXPECT_SUCCESS())
ExpectIntEQ(ext->resp, 1);
wolfSSL_free(ssl_c);
wolfSSL_free(ssl_s);
wolfSSL_CTX_free(ctx_c);
wolfSSL_CTX_free(ctx_s);
}
#endif
return EXPECT_RESULT();
}
int test_certificate_authorities_client_hello(void) {
EXPECT_DECLS;
#if !defined(NO_WOLFSSL_CLIENT) && !defined(NO_WOLFSSL_SERVER) && \
!defined(WOLFSSL_NO_CA_NAMES) && !defined(NO_BIO) && \
!defined(NO_CERTS) && (defined(OPENSSL_EXTRA) || \
defined(OPENSSL_EXTRA_X509_SMALL)) && (defined(OPENSSL_ALL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY)) && \
defined(WOLFSSL_TLS13) && defined(HAVE_MANUAL_MEMIO_TESTS_DEPENDENCIES)
struct test_params {
method_provider client_meth;
method_provider server_meth;
int doUdp;
} params[] = {
/* TLS >= 1.3 only */
#ifdef WOLFSSL_TLS13
{wolfTLSv1_3_client_method, wolfTLSv1_3_server_method, 0},
#endif
#ifdef WOLFSSL_DTLS13
{wolfDTLSv1_3_client_method, wolfDTLSv1_3_server_method, 1},
#endif
};
size_t i;
for (i = 0; i < sizeof(params) / sizeof(*params); i++) {
struct test_memio_ctx test_ctx;
WOLFSSL_CTX *ctx_srv = NULL;
WOLFSSL *ssl_srv = NULL;
WOLFSSL_CTX *ctx_cli = NULL;
WOLFSSL *ssl_cli = NULL;
WOLF_STACK_OF(X509_NAME) *cb_arg = NULL;
WOLF_STACK_OF(X509_NAME) *names1 = NULL, *names2 = NULL;
X509_NAME *name = NULL;
const char *expected_names[] = {
"/C=US/ST=Montana/L=Bozeman/O=Sawtooth/OU=Consulting"
"/CN=www.wolfssl.com/emailAddress=info@wolfssl.com",
"/C=US/ST=Montana/L=Bozeman/O=wolfSSL_2048/OU=Programming-2048"
"/CN=www.wolfssl.com/emailAddress=info@wolfssl.com"
};
if (EXPECT_FAIL())
break;
XMEMSET(&test_ctx, 0, sizeof(test_ctx));
ExpectIntEQ(0, test_memio_setup(&test_ctx, &ctx_cli, &ctx_srv,
&ssl_cli, &ssl_srv, params[i].client_meth,
params[i].server_meth));
wolfSSL_CTX_set_cert_cb(ctx_srv, certificate_authorities_server_cb,
&cb_arg);
names1 = wolfSSL_load_client_CA_file(caCertFile);
ExpectNotNull(names1);
names2 = wolfSSL_load_client_CA_file(cliCertFile);
ExpectNotNull(names2);
ExpectNotNull(name = wolfSSL_sk_X509_NAME_value(names2, 0));
ExpectIntEQ(2, wolfSSL_sk_X509_NAME_push(names1, name));
if (EXPECT_FAIL()) {
wolfSSL_X509_NAME_free(name);
name = NULL;
}
wolfSSL_sk_X509_NAME_free(names2);
names2 = wolfSSL_load_client_CA_file(cliCertFile);
ExpectNotNull(names2);
/* verify that set0_CA_list takes precedence */
wolfSSL_set0_CA_list(ssl_cli, names1);
wolfSSL_CTX_set0_CA_list(ctx_cli, names2);
ExpectIntEQ(0, test_memio_do_handshake(ssl_cli, ssl_srv, 10, NULL));
ExpectIntEQ(wolfSSL_sk_X509_NAME_num(cb_arg), 2);
if (EXPECT_SUCCESS()) {
ExpectStrEQ(wolfSSL_sk_X509_NAME_value(cb_arg, 0)->name,
expected_names[0]);
ExpectStrEQ(wolfSSL_sk_X509_NAME_value(cb_arg, 1)->name,
expected_names[1]);
}
wolfSSL_shutdown(ssl_cli);
wolfSSL_free(ssl_cli);
wolfSSL_CTX_free(ctx_cli);
wolfSSL_free(ssl_srv);
wolfSSL_CTX_free(ctx_srv);
}
#endif
return EXPECT_RESULT();
}
/* Test that the SNI size calculation returns 0 on overflow instead of
* wrapping around to a small value (integer overflow vulnerability). */
int test_TLSX_SNI_GetSize_overflow(void)
{
EXPECT_DECLS;
#if defined(HAVE_SNI) && !defined(NO_WOLFSSL_CLIENT) && !defined(NO_TLS)
WOLFSSL_CTX* ctx = NULL;
WOLFSSL* ssl = NULL;
TLSX* sni_ext = NULL;
SNI* head = NULL;
SNI* sni = NULL;
int i;
/* Each SNI adds ENUM_LEN(1) + OPAQUE16_LEN(2) + hostname_len to the size.
* With a 1-byte hostname, each entry adds 4 bytes. Starting from
* OPAQUE16_LEN(2) base, we need enough entries to exceed UINT16_MAX. */
const int num_sni = (0xFFFF / 4) + 2;
ExpectNotNull(ctx = wolfSSL_CTX_new(wolfSSLv23_client_method()));
ExpectNotNull(ssl = wolfSSL_new(ctx));
/* Add initial SNI via public API */
ExpectIntEQ(WOLFSSL_SUCCESS,
wolfSSL_UseSNI(ssl, WOLFSSL_SNI_HOST_NAME, "a", 1));
/* Find the SNI extension and manually build a long chain */
if (EXPECT_SUCCESS()) {
sni_ext = TLSX_Find(ssl->extensions, TLSX_SERVER_NAME);
ExpectNotNull(sni_ext);
}
if (EXPECT_SUCCESS()) {
head = (SNI*)sni_ext->data;
ExpectNotNull(head);
}
/* Append many SNI nodes to force overflow in the size calculation */
for (i = 1; EXPECT_SUCCESS() && i < num_sni; i++) {
sni = (SNI*)XMALLOC(sizeof(SNI), NULL, DYNAMIC_TYPE_TLSX);
ExpectNotNull(sni);
if (sni != NULL) {
XMEMSET(sni, 0, sizeof(SNI));
sni->type = WOLFSSL_SNI_HOST_NAME;
sni->data.host_name = (char*)XMALLOC(2, NULL, DYNAMIC_TYPE_TLSX);
ExpectNotNull(sni->data.host_name);
if (sni->data.host_name != NULL) {
sni->data.host_name[0] = 'a';
sni->data.host_name[1] = '\0';
}
sni->next = head->next;
head->next = sni;
}
}
if (EXPECT_SUCCESS()) {
/* The fixed calculation should return 0 (overflow detected) */
ExpectIntEQ(TLSX_SNI_GetSize((SNI*)sni_ext->data), 0);
}
wolfSSL_free(ssl);
wolfSSL_CTX_free(ctx);
#endif
return EXPECT_RESULT();
}
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