static int test_client_hello(int currtest)
{
SSL_CTX *ctx;
SSL *con = NULL;
BIO *rbio;
BIO *wbio;
long len;
unsigned char *data;
PACKET pkt = {0}, pkt2 = {0}, pkt3 = {0};
char *dummytick = "Hello World!";
unsigned int type = 0;
int testresult = 0;
size_t msglen;
BIO *sessbio = NULL;
SSL_SESSION *sess = NULL;
#ifdef OPENSSL_NO_TLS1_3
if (currtest == TEST_ADD_PADDING_AND_PSK)
return 1;
#endif
/*
* For each test set up an SSL_CTX and SSL and see what ClientHello gets
* produced when we try to connect
*/
ctx = SSL_CTX_new(TLS_method());
if (!TEST_ptr(ctx))
goto end;
switch(currtest) {
case TEST_SET_SESSION_TICK_DATA_VER_NEG:
/* Testing for session tickets <= TLS1.2; not relevant for 1.3 */
if (!TEST_true(SSL_CTX_set_max_proto_version(ctx, TLS1_2_VERSION)))
goto end;
break;
case TEST_ADD_PADDING_AND_PSK:
case TEST_ADD_PADDING:
case TEST_PADDING_NOT_NEEDED:
SSL_CTX_set_options(ctx, SSL_OP_TLSEXT_PADDING);
/*
* Add lots of ciphersuites so that the ClientHello is at least
* F5_WORKAROUND_MIN_MSG_LEN bytes long - meaning padding will be
* needed. Also add some dummy ALPN protocols in case we still don't
* have enough.
*/
if (currtest == TEST_ADD_PADDING
&& (!TEST_true(SSL_CTX_set_cipher_list(ctx, "ALL"))
|| !TEST_false(SSL_CTX_set_alpn_protos(ctx,
(unsigned char *)alpn_prots,
sizeof(alpn_prots) - 1))))
goto end;
break;
default:
goto end;
}
con = SSL_new(ctx);
if (!TEST_ptr(con))
goto end;
if (currtest == TEST_ADD_PADDING_AND_PSK) {
sessbio = BIO_new_file(sessionfile, "r");
if (!TEST_ptr(sessbio)) {
TEST_info("Unable to open session.pem");
goto end;
}
sess = PEM_read_bio_SSL_SESSION(sessbio, NULL, NULL, NULL);
if (!TEST_ptr(sess)) {
TEST_info("Unable to load SSL_SESSION");
goto end;
}
/*
* We reset the creation time so that we don't discard the session as
* too old.
*/
if (!TEST_true(SSL_SESSION_set_time(sess, time(NULL)))
|| !TEST_true(SSL_set_session(con, sess)))
goto end;
}
rbio = BIO_new(BIO_s_mem());
wbio = BIO_new(BIO_s_mem());
if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) {
BIO_free(rbio);
BIO_free(wbio);
goto end;
}
SSL_set_bio(con, rbio, wbio);
SSL_set_connect_state(con);
if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
if (!TEST_true(SSL_set_session_ticket_ext(con, dummytick,
strlen(dummytick))))
goto end;
}
if (!TEST_int_le(SSL_connect(con), 0)) {
/* This shouldn't succeed because we don't have a server! */
goto end;
}
len = BIO_get_mem_data(wbio, (char **)&data);
if (!TEST_true(PACKET_buf_init(&pkt, data, len))
/* Skip the record header */
|| !PACKET_forward(&pkt, SSL3_RT_HEADER_LENGTH))
goto end;
msglen = PACKET_remaining(&pkt);
/* Skip the handshake message header */
if (!TEST_true(PACKET_forward(&pkt, SSL3_HM_HEADER_LENGTH))
/* Skip client version and random */
|| !TEST_true(PACKET_forward(&pkt, CLIENT_VERSION_LEN
+ SSL3_RANDOM_SIZE))
/* Skip session id */
|| !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2))
/* Skip ciphers */
|| !TEST_true(PACKET_get_length_prefixed_2(&pkt, &pkt2))
/* Skip compression */
|| !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2))
/* Extensions len */
|| !TEST_true(PACKET_as_length_prefixed_2(&pkt, &pkt2)))
goto end;
/* Loop through all extensions */
while (PACKET_remaining(&pkt2)) {
if (!TEST_true(PACKET_get_net_2(&pkt2, &type))
|| !TEST_true(PACKET_get_length_prefixed_2(&pkt2, &pkt3)))
goto end;
if (type == TLSEXT_TYPE_session_ticket) {
if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
if (TEST_true(PACKET_equal(&pkt3, dummytick,
strlen(dummytick)))) {
/* Ticket data is as we expected */
testresult = 1;
}
goto end;
}
}
if (type == TLSEXT_TYPE_padding) {
if (!TEST_false(currtest == TEST_PADDING_NOT_NEEDED))
goto end;
else if (TEST_true(currtest == TEST_ADD_PADDING
|| currtest == TEST_ADD_PADDING_AND_PSK))
testresult = TEST_true(msglen == F5_WORKAROUND_MAX_MSG_LEN);
}
}
if (currtest == TEST_PADDING_NOT_NEEDED)
testresult = 1;
end:
SSL_free(con);
SSL_CTX_free(ctx);
SSL_SESSION_free(sess);
BIO_free(sessbio);
return testresult;
}
int main(int argc, char *argv[])
{
SSL_CTX *ctx;
SSL *con;
BIO *rbio;
BIO *wbio;
BIO *err;
long len;
unsigned char *data;
unsigned char *dataend;
char *dummytick = "Hello World!";
unsigned int tmplen;
unsigned int type;
unsigned int size;
int testresult = 0;
int currtest = 0;
SSL_library_init();
SSL_load_error_strings();
err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
CRYPTO_malloc_debug_init();
CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
/*
* For each test set up an SSL_CTX and SSL and see what ClientHello gets
* produced when we try to connect
*/
for (; currtest < TOTAL_NUM_TESTS; currtest++) {
testresult = 0;
if (currtest == TEST_SET_SESSION_TICK_DATA_TLS_1_2) {
ctx = SSL_CTX_new(TLSv1_2_method());
} else {
ctx = SSL_CTX_new(SSLv23_method());
}
con = SSL_new(ctx);
rbio = BIO_new(BIO_s_mem());
wbio = BIO_new(BIO_s_mem());
SSL_set_bio(con, rbio, wbio);
SSL_set_connect_state(con);
if (currtest == TEST_SET_SESSION_TICK_DATA_TLS_1_2
|| currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
if (!SSL_set_session_ticket_ext(con, dummytick, strlen(dummytick)))
goto end;
}
if (SSL_connect(con) > 0) {
/* This shouldn't succeed because we don't have a server! */
goto end;
}
len = BIO_get_mem_data(wbio, (char **)&data);
dataend = data + len;
/* Skip the record header */
data += SSL3_RT_HEADER_LENGTH;
/* Skip the handshake message header */
data += SSL3_HM_HEADER_LENGTH;
/* Skip client version and random */
data += CLIENT_VERSION_LEN + SSL3_RANDOM_SIZE;
if (data + SESSION_ID_LEN_LEN > dataend)
goto end;
/* Skip session id */
tmplen = *data;
data += SESSION_ID_LEN_LEN + tmplen;
if (data + CIPHERS_LEN_LEN > dataend)
goto end;
/* Skip ciphers */
tmplen = ((*data) << 8) | *(data + 1);
data += CIPHERS_LEN_LEN + tmplen;
if (data + COMPRESSION_LEN_LEN > dataend)
goto end;
/* Skip compression */
tmplen = *data;
data += COMPRESSION_LEN_LEN + tmplen;
if (data + EXTENSIONS_LEN_LEN > dataend)
goto end;
/* Extensions len */
tmplen = ((*data) << 8) | *(data + 1);
data += EXTENSIONS_LEN_LEN;
if (data + tmplen > dataend)
goto end;
/* Loop through all extensions */
while (tmplen > EXTENSION_TYPE_LEN + EXTENSION_SIZE_LEN) {
type = ((*data) << 8) | *(data + 1);
data += EXTENSION_TYPE_LEN;
size = ((*data) << 8) | *(data + 1);
data += EXTENSION_SIZE_LEN;
if (data + size > dataend)
goto end;
if (type == TLSEXT_TYPE_session_ticket) {
if (currtest == TEST_SET_SESSION_TICK_DATA_TLS_1_2
|| currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) {
if (size == strlen(dummytick)
&& memcmp(data, dummytick, size) == 0) {
/* Ticket data is as we expected */
testresult = 1;
} else {
printf("Received session ticket is not as expected\n");
}
break;
}
}
tmplen -= EXTENSION_TYPE_LEN + EXTENSION_SIZE_LEN + size;
data += size;
}
end:
SSL_free(con);
SSL_CTX_free(ctx);
if (!testresult) {
printf("ClientHello test: FAILED (Test %d)\n", currtest);
break;
}
}
ERR_free_strings();
ERR_remove_thread_state(NULL);
EVP_cleanup();
CRYPTO_cleanup_all_ex_data();
CRYPTO_mem_leaks(err);
return testresult?0:1;
}