2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #include <openssl/bio.h>
13 #include <openssl/x509_vfy.h>
14 #include <openssl/ssl.h>
16 #include "handshake_helper.h"
19 HANDSHAKE_RESULT *HANDSHAKE_RESULT_new()
21 HANDSHAKE_RESULT *ret = OPENSSL_zalloc(sizeof(*ret));
22 TEST_check(ret != NULL);
26 void HANDSHAKE_RESULT_free(HANDSHAKE_RESULT *result)
30 OPENSSL_free(result->client_npn_negotiated);
31 OPENSSL_free(result->server_npn_negotiated);
32 OPENSSL_free(result->client_alpn_negotiated);
33 OPENSSL_free(result->server_alpn_negotiated);
38 * Since there appears to be no way to extract the sent/received alert
39 * from the SSL object directly, we use the info callback and stash
40 * the result in ex_data.
42 typedef struct handshake_ex_data_st {
44 int num_fatal_alerts_sent;
46 int session_ticket_do_not_call;
47 ssl_servername_t servername;
50 typedef struct ctx_data_st {
51 unsigned char *npn_protocols;
52 size_t npn_protocols_len;
53 unsigned char *alpn_protocols;
54 size_t alpn_protocols_len;
57 /* |ctx_data| itself is stack-allocated. */
58 static void ctx_data_free_data(CTX_DATA *ctx_data)
60 OPENSSL_free(ctx_data->npn_protocols);
61 ctx_data->npn_protocols = NULL;
62 OPENSSL_free(ctx_data->alpn_protocols);
63 ctx_data->alpn_protocols = NULL;
66 static int ex_data_idx;
68 static void info_cb(const SSL *s, int where, int ret)
70 if (where & SSL_CB_ALERT) {
71 HANDSHAKE_EX_DATA *ex_data =
72 (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
73 if (where & SSL_CB_WRITE) {
74 ex_data->alert_sent = ret;
75 if (strcmp(SSL_alert_type_string(ret), "F") == 0
76 || strcmp(SSL_alert_desc_string(ret), "CN") == 0)
77 ex_data->num_fatal_alerts_sent++;
79 ex_data->alert_received = ret;
84 /* Select the appropriate server CTX.
85 * Returns SSL_TLSEXT_ERR_OK if a match was found.
86 * If |ignore| is 1, returns SSL_TLSEXT_ERR_NOACK on mismatch.
87 * Otherwise, returns SSL_TLSEXT_ERR_ALERT_FATAL on mismatch.
88 * An empty SNI extension also returns SSL_TSLEXT_ERR_NOACK.
90 static int select_server_ctx(SSL *s, void *arg, int ignore)
92 const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
93 HANDSHAKE_EX_DATA *ex_data =
94 (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
96 if (servername == NULL) {
97 ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
98 return SSL_TLSEXT_ERR_NOACK;
101 if (strcmp(servername, "server2") == 0) {
102 SSL_CTX *new_ctx = (SSL_CTX*)arg;
103 SSL_set_SSL_CTX(s, new_ctx);
105 * Copy over all the SSL_CTX options - reasonable behavior
106 * allows testing of cases where the options between two
107 * contexts differ/conflict
109 SSL_clear_options(s, 0xFFFFFFFFL);
110 SSL_set_options(s, SSL_CTX_get_options(new_ctx));
112 ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;
113 return SSL_TLSEXT_ERR_OK;
114 } else if (strcmp(servername, "server1") == 0) {
115 ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
116 return SSL_TLSEXT_ERR_OK;
118 ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
119 return SSL_TLSEXT_ERR_NOACK;
121 /* Don't set an explicit alert, to test library defaults. */
122 return SSL_TLSEXT_ERR_ALERT_FATAL;
128 * If the server understood the ClientHello extension but
129 * does not recognize the server name, the server SHOULD take one of two
130 * actions: either abort the handshake by sending a fatal-level
131 * unrecognized_name(112) alert or continue the handshake.
133 * This behaviour is up to the application to configure; we test both
134 * configurations to ensure the state machine propagates the result
137 static int servername_ignore_cb(SSL *s, int *ad, void *arg)
139 return select_server_ctx(s, arg, 1);
142 static int servername_reject_cb(SSL *s, int *ad, void *arg)
144 return select_server_ctx(s, arg, 0);
147 static int verify_reject_cb(X509_STORE_CTX *ctx, void *arg) {
148 X509_STORE_CTX_set_error(ctx, X509_V_ERR_APPLICATION_VERIFICATION);
152 static int verify_accept_cb(X509_STORE_CTX *ctx, void *arg) {
156 static int broken_session_ticket_cb(SSL *s, unsigned char *key_name, unsigned char *iv,
157 EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc)
162 static int do_not_call_session_ticket_cb(SSL *s, unsigned char *key_name,
165 HMAC_CTX *hctx, int enc)
167 HANDSHAKE_EX_DATA *ex_data =
168 (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
169 ex_data->session_ticket_do_not_call = 1;
173 /* Parse the comma-separated list into TLS format. */
174 static void parse_protos(const char *protos, unsigned char **out, size_t *outlen)
176 size_t len, i, prefix;
178 len = strlen(protos);
180 /* Should never have reuse. */
181 TEST_check(*out == NULL);
183 /* Test values are small, so we omit length limit checks. */
184 *out = OPENSSL_malloc(len + 1);
185 TEST_check(*out != NULL);
189 * foo => '3', 'f', 'o', 'o'
190 * foo,bar => '3', 'f', 'o', 'o', '3', 'b', 'a', 'r'
192 memcpy(*out + 1, protos, len);
197 if ((*out)[i] == ',') {
198 TEST_check(i - 1 - prefix > 0);
199 (*out)[prefix] = i - 1 - prefix;
204 TEST_check(len - prefix > 0);
205 (*out)[prefix] = len - prefix;
208 #ifndef OPENSSL_NO_NEXTPROTONEG
210 * The client SHOULD select the first protocol advertised by the server that it
211 * also supports. In the event that the client doesn't support any of server's
212 * protocols, or the server doesn't advertise any, it SHOULD select the first
213 * protocol that it supports.
215 static int client_npn_cb(SSL *s, unsigned char **out, unsigned char *outlen,
216 const unsigned char *in, unsigned int inlen,
219 CTX_DATA *ctx_data = (CTX_DATA*)(arg);
222 ret = SSL_select_next_proto(out, outlen, in, inlen,
223 ctx_data->npn_protocols,
224 ctx_data->npn_protocols_len);
225 /* Accept both OPENSSL_NPN_NEGOTIATED and OPENSSL_NPN_NO_OVERLAP. */
226 TEST_check(ret == OPENSSL_NPN_NEGOTIATED || ret == OPENSSL_NPN_NO_OVERLAP);
227 return SSL_TLSEXT_ERR_OK;
230 static int server_npn_cb(SSL *s, const unsigned char **data,
231 unsigned int *len, void *arg)
233 CTX_DATA *ctx_data = (CTX_DATA*)(arg);
234 *data = ctx_data->npn_protocols;
235 *len = ctx_data->npn_protocols_len;
236 return SSL_TLSEXT_ERR_OK;
241 * The server SHOULD select the most highly preferred protocol that it supports
242 * and that is also advertised by the client. In the event that the server
243 * supports no protocols that the client advertises, then the server SHALL
244 * respond with a fatal "no_application_protocol" alert.
246 static int server_alpn_cb(SSL *s, const unsigned char **out,
247 unsigned char *outlen, const unsigned char *in,
248 unsigned int inlen, void *arg)
250 CTX_DATA *ctx_data = (CTX_DATA*)(arg);
253 /* SSL_select_next_proto isn't const-correct... */
254 unsigned char *tmp_out;
257 * The result points either to |in| or to |ctx_data->alpn_protocols|.
258 * The callback is allowed to point to |in| or to a long-lived buffer,
259 * so we can return directly without storing a copy.
261 ret = SSL_select_next_proto(&tmp_out, outlen,
262 ctx_data->alpn_protocols,
263 ctx_data->alpn_protocols_len, in, inlen);
266 /* Unlike NPN, we don't tolerate a mismatch. */
267 return ret == OPENSSL_NPN_NEGOTIATED ? SSL_TLSEXT_ERR_OK
268 : SSL_TLSEXT_ERR_NOACK;
272 * Configure callbacks and other properties that can't be set directly
273 * in the server/client CONF.
275 static void configure_handshake_ctx(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
277 const SSL_TEST_CTX *test,
278 const SSL_TEST_EXTRA_CONF *extra,
279 CTX_DATA *server_ctx_data,
280 CTX_DATA *server2_ctx_data,
281 CTX_DATA *client_ctx_data)
283 unsigned char *ticket_keys;
284 size_t ticket_key_len;
286 TEST_check(SSL_CTX_set_max_send_fragment(server_ctx,
287 test->max_fragment_size) == 1);
288 if (server2_ctx != NULL) {
289 TEST_check(SSL_CTX_set_max_send_fragment(server2_ctx,
290 test->max_fragment_size) == 1);
292 TEST_check(SSL_CTX_set_max_send_fragment(client_ctx,
293 test->max_fragment_size) == 1);
295 switch (extra->client.verify_callback) {
296 case SSL_TEST_VERIFY_ACCEPT_ALL:
297 SSL_CTX_set_cert_verify_callback(client_ctx, &verify_accept_cb,
300 case SSL_TEST_VERIFY_REJECT_ALL:
301 SSL_CTX_set_cert_verify_callback(client_ctx, &verify_reject_cb,
308 /* link the two contexts for SNI purposes */
309 switch (extra->server.servername_callback) {
310 case SSL_TEST_SERVERNAME_IGNORE_MISMATCH:
311 SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_ignore_cb);
312 SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
314 case SSL_TEST_SERVERNAME_REJECT_MISMATCH:
315 SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_reject_cb);
316 SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
323 * The initial_ctx/session_ctx always handles the encrypt/decrypt of the
324 * session ticket. This ticket_key callback is assigned to the second
325 * session (assigned via SNI), and should never be invoked
327 if (server2_ctx != NULL)
328 SSL_CTX_set_tlsext_ticket_key_cb(server2_ctx,
329 do_not_call_session_ticket_cb);
331 if (extra->server.broken_session_ticket) {
332 SSL_CTX_set_tlsext_ticket_key_cb(server_ctx, broken_session_ticket_cb);
334 #ifndef OPENSSL_NO_NEXTPROTONEG
335 if (extra->server.npn_protocols != NULL) {
336 parse_protos(extra->server.npn_protocols,
337 &server_ctx_data->npn_protocols,
338 &server_ctx_data->npn_protocols_len);
339 SSL_CTX_set_next_protos_advertised_cb(server_ctx, server_npn_cb,
342 if (extra->server2.npn_protocols != NULL) {
343 parse_protos(extra->server2.npn_protocols,
344 &server2_ctx_data->npn_protocols,
345 &server2_ctx_data->npn_protocols_len);
346 TEST_check(server2_ctx != NULL);
347 SSL_CTX_set_next_protos_advertised_cb(server2_ctx, server_npn_cb,
350 if (extra->client.npn_protocols != NULL) {
351 parse_protos(extra->client.npn_protocols,
352 &client_ctx_data->npn_protocols,
353 &client_ctx_data->npn_protocols_len);
354 SSL_CTX_set_next_proto_select_cb(client_ctx, client_npn_cb,
358 if (extra->server.alpn_protocols != NULL) {
359 parse_protos(extra->server.alpn_protocols,
360 &server_ctx_data->alpn_protocols,
361 &server_ctx_data->alpn_protocols_len);
362 SSL_CTX_set_alpn_select_cb(server_ctx, server_alpn_cb, server_ctx_data);
364 if (extra->server2.alpn_protocols != NULL) {
365 TEST_check(server2_ctx != NULL);
366 parse_protos(extra->server2.alpn_protocols,
367 &server2_ctx_data->alpn_protocols,
368 &server2_ctx_data->alpn_protocols_len);
369 SSL_CTX_set_alpn_select_cb(server2_ctx, server_alpn_cb, server2_ctx_data);
371 if (extra->client.alpn_protocols != NULL) {
372 unsigned char *alpn_protos = NULL;
373 size_t alpn_protos_len;
374 parse_protos(extra->client.alpn_protocols,
375 &alpn_protos, &alpn_protos_len);
376 /* Reversed return value convention... */
377 TEST_check(SSL_CTX_set_alpn_protos(client_ctx, alpn_protos,
378 alpn_protos_len) == 0);
379 OPENSSL_free(alpn_protos);
383 * Use fixed session ticket keys so that we can decrypt a ticket created with
384 * one CTX in another CTX. Don't address server2 for the moment.
386 ticket_key_len = SSL_CTX_set_tlsext_ticket_keys(server_ctx, NULL, 0);
387 ticket_keys = OPENSSL_zalloc(ticket_key_len);
388 TEST_check(ticket_keys != NULL);
389 TEST_check(SSL_CTX_set_tlsext_ticket_keys(server_ctx, ticket_keys,
390 ticket_key_len) == 1);
391 OPENSSL_free(ticket_keys);
393 /* The default log list includes EC keys, so CT can't work without EC. */
394 #if !defined(OPENSSL_NO_CT) && !defined(OPENSSL_NO_EC)
395 TEST_check(SSL_CTX_set_default_ctlog_list_file(client_ctx));
396 switch (extra->client.ct_validation) {
397 case SSL_TEST_CT_VALIDATION_PERMISSIVE:
398 TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_PERMISSIVE));
400 case SSL_TEST_CT_VALIDATION_STRICT:
401 TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_STRICT));
403 case SSL_TEST_CT_VALIDATION_NONE:
409 /* Configure per-SSL callbacks and other properties. */
410 static void configure_handshake_ssl(SSL *server, SSL *client,
411 const SSL_TEST_EXTRA_CONF *extra)
413 if (extra->client.servername != SSL_TEST_SERVERNAME_NONE)
414 SSL_set_tlsext_host_name(client,
415 ssl_servername_name(extra->client.servername));
418 /* The status for each connection phase. */
425 /* An SSL object and associated read-write buffers. */
426 typedef struct peer_st {
428 /* Buffer lengths are int to match the SSL read/write API. */
429 unsigned char *write_buf;
431 unsigned char *read_buf;
435 peer_status_t status;
438 static void create_peer(PEER *peer, SSL_CTX *ctx)
440 static const int peer_buffer_size = 64 * 1024;
442 peer->ssl = SSL_new(ctx);
443 TEST_check(peer->ssl != NULL);
444 peer->write_buf = OPENSSL_zalloc(peer_buffer_size);
445 TEST_check(peer->write_buf != NULL);
446 peer->read_buf = OPENSSL_zalloc(peer_buffer_size);
447 TEST_check(peer->read_buf != NULL);
448 peer->write_buf_len = peer->read_buf_len = peer_buffer_size;
451 static void peer_free_data(PEER *peer)
454 OPENSSL_free(peer->write_buf);
455 OPENSSL_free(peer->read_buf);
459 * Note that we could do the handshake transparently under an SSL_write,
460 * but separating the steps is more helpful for debugging test failures.
462 static void do_handshake_step(PEER *peer)
466 TEST_check(peer->status == PEER_RETRY);
467 ret = SSL_do_handshake(peer->ssl);
470 peer->status = PEER_SUCCESS;
471 } else if (ret == 0) {
472 peer->status = PEER_ERROR;
474 int error = SSL_get_error(peer->ssl, ret);
475 /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
476 if (error != SSL_ERROR_WANT_READ)
477 peer->status = PEER_ERROR;
482 * Send/receive some application data. The read-write sequence is
483 * Peer A: (R) W - first read will yield no data
490 static void do_app_data_step(PEER *peer)
492 int ret = 1, write_bytes;
494 TEST_check(peer->status == PEER_RETRY);
496 /* We read everything available... */
497 while (ret > 0 && peer->bytes_to_read) {
498 ret = SSL_read(peer->ssl, peer->read_buf, peer->read_buf_len);
500 TEST_check(ret <= peer->bytes_to_read);
501 peer->bytes_to_read -= ret;
502 } else if (ret == 0) {
503 peer->status = PEER_ERROR;
506 int error = SSL_get_error(peer->ssl, ret);
507 if (error != SSL_ERROR_WANT_READ) {
508 peer->status = PEER_ERROR;
510 } /* Else continue with write. */
514 /* ... but we only write one write-buffer-full of data. */
515 write_bytes = peer->bytes_to_write < peer->write_buf_len ? peer->bytes_to_write :
518 ret = SSL_write(peer->ssl, peer->write_buf, write_bytes);
520 /* SSL_write will only succeed with a complete write. */
521 TEST_check(ret == write_bytes);
522 peer->bytes_to_write -= ret;
525 * We should perhaps check for SSL_ERROR_WANT_READ/WRITE here
526 * but this doesn't yet occur with current app data sizes.
528 peer->status = PEER_ERROR;
534 * We could simply finish when there was nothing to read, and we have
535 * nothing left to write. But keeping track of the expected number of bytes
536 * to read gives us somewhat better guarantees that all data sent is in fact
539 if (!peer->bytes_to_write && !peer->bytes_to_read) {
540 peer->status = PEER_SUCCESS;
547 * Note that as of TLS 1.1,
548 * failure to properly close a connection no longer requires that a
549 * session not be resumed. This is a change from TLS 1.0 to conform
550 * with widespread implementation practice.
553 * (a) OpenSSL requires that a connection be shutdown for all protocol versions.
554 * (b) We test lower versions, too.
555 * So we just implement shutdown. We do a full bidirectional shutdown so that we
556 * can compare sent and received close_notify alerts and get some test coverage
557 * for SSL_shutdown as a bonus.
559 static void do_shutdown_step(PEER *peer)
563 TEST_check(peer->status == PEER_RETRY);
564 ret = SSL_shutdown(peer->ssl);
567 peer->status = PEER_SUCCESS;
568 } else if (ret < 0) { /* On 0, we retry. */
569 int error = SSL_get_error(peer->ssl, ret);
570 /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
571 if (error != SSL_ERROR_WANT_READ)
572 peer->status = PEER_ERROR;
583 static connect_phase_t next_phase(connect_phase_t phase)
587 return APPLICATION_DATA;
588 case APPLICATION_DATA:
591 return CONNECTION_DONE;
593 TEST_check(0); /* Should never call next_phase when done. */
597 static void do_connect_step(PEER *peer, connect_phase_t phase)
601 do_handshake_step(peer);
603 case APPLICATION_DATA:
604 do_app_data_step(peer);
607 do_shutdown_step(peer);
615 /* Both parties succeeded. */
617 /* Client errored. */
619 /* Server errored. */
621 /* Peers are in inconsistent state. */
623 /* One or both peers not done. */
625 } handshake_status_t;
628 * Determine the handshake outcome.
629 * last_status: the status of the peer to have acted last.
630 * previous_status: the status of the peer that didn't act last.
631 * client_spoke_last: 1 if the client went last.
633 static handshake_status_t handshake_status(peer_status_t last_status,
634 peer_status_t previous_status,
635 int client_spoke_last)
637 switch (last_status) {
639 switch (previous_status) {
641 /* Both succeeded. */
642 return HANDSHAKE_SUCCESS;
644 /* Let the first peer finish. */
645 return HANDSHAKE_RETRY;
648 * Second peer succeeded despite the fact that the first peer
649 * already errored. This shouldn't happen.
651 return INTERNAL_ERROR;
655 if (previous_status == PEER_RETRY) {
656 /* Neither peer is done. */
657 return HANDSHAKE_RETRY;
660 * Deadlock: second peer is waiting for more input while first
661 * peer thinks they're done (no more input is coming).
663 return INTERNAL_ERROR;
666 switch (previous_status) {
669 * First peer succeeded but second peer errored.
670 * TODO(emilia): we should be able to continue here (with some
671 * application data?) to ensure the first peer receives the
672 * alert / close_notify.
673 * (No tests currently exercise this branch.)
675 return client_spoke_last ? CLIENT_ERROR : SERVER_ERROR;
677 /* We errored; let the peer finish. */
678 return HANDSHAKE_RETRY;
680 /* Both peers errored. Return the one that errored first. */
681 return client_spoke_last ? SERVER_ERROR : CLIENT_ERROR;
684 /* Control should never reach here. */
685 return INTERNAL_ERROR;
688 /* Convert unsigned char buf's that shouldn't contain any NUL-bytes to char. */
689 static char *dup_str(const unsigned char *in, size_t len)
696 /* Assert that the string does not contain NUL-bytes. */
697 TEST_check(OPENSSL_strnlen((const char*)(in), len) == len);
698 ret = OPENSSL_strndup((const char*)(in), len);
699 TEST_check(ret != NULL);
704 * Note that |extra| points to the correct client/server configuration
705 * within |test_ctx|. When configuring the handshake, general mode settings
706 * are taken from |test_ctx|, and client/server-specific settings should be
707 * taken from |extra|.
709 * The configuration code should never reach into |test_ctx->extra| or
710 * |test_ctx->resume_extra| directly.
712 * (We could refactor test mode settings into a substructure. This would result
713 * in cleaner argument passing but would complicate the test configuration
716 static HANDSHAKE_RESULT *do_handshake_internal(
717 SSL_CTX *server_ctx, SSL_CTX *server2_ctx, SSL_CTX *client_ctx,
718 const SSL_TEST_CTX *test_ctx, const SSL_TEST_EXTRA_CONF *extra,
719 SSL_SESSION *session_in, SSL_SESSION **session_out)
722 BIO *client_to_server, *server_to_client;
723 HANDSHAKE_EX_DATA server_ex_data, client_ex_data;
724 CTX_DATA client_ctx_data, server_ctx_data, server2_ctx_data;
725 HANDSHAKE_RESULT *ret = HANDSHAKE_RESULT_new();
727 connect_phase_t phase = HANDSHAKE;
728 handshake_status_t status = HANDSHAKE_RETRY;
729 const unsigned char* tick = NULL;
731 SSL_SESSION* sess = NULL;
732 const unsigned char *proto = NULL;
733 /* API dictates unsigned int rather than size_t. */
734 unsigned int proto_len = 0;
736 memset(&server_ctx_data, 0, sizeof(server_ctx_data));
737 memset(&server2_ctx_data, 0, sizeof(server2_ctx_data));
738 memset(&client_ctx_data, 0, sizeof(client_ctx_data));
739 memset(&server, 0, sizeof(server));
740 memset(&client, 0, sizeof(client));
742 configure_handshake_ctx(server_ctx, server2_ctx, client_ctx, test_ctx, extra,
743 &server_ctx_data, &server2_ctx_data, &client_ctx_data);
745 /* Setup SSL and buffers; additional configuration happens below. */
746 create_peer(&server, server_ctx);
747 create_peer(&client, client_ctx);
749 server.bytes_to_write = client.bytes_to_read = test_ctx->app_data_size;
750 client.bytes_to_write = server.bytes_to_read = test_ctx->app_data_size;
752 configure_handshake_ssl(server.ssl, client.ssl, extra);
753 if (session_in != NULL) {
754 /* In case we're testing resumption without tickets. */
755 TEST_check(SSL_CTX_add_session(server_ctx, session_in));
756 TEST_check(SSL_set_session(client.ssl, session_in));
759 memset(&server_ex_data, 0, sizeof(server_ex_data));
760 memset(&client_ex_data, 0, sizeof(client_ex_data));
762 ret->result = SSL_TEST_INTERNAL_ERROR;
764 client_to_server = BIO_new(BIO_s_mem());
765 server_to_client = BIO_new(BIO_s_mem());
767 TEST_check(client_to_server != NULL);
768 TEST_check(server_to_client != NULL);
770 /* Non-blocking bio. */
771 BIO_set_nbio(client_to_server, 1);
772 BIO_set_nbio(server_to_client, 1);
774 SSL_set_connect_state(client.ssl);
775 SSL_set_accept_state(server.ssl);
777 /* The bios are now owned by the SSL object. */
778 SSL_set_bio(client.ssl, server_to_client, client_to_server);
779 TEST_check(BIO_up_ref(server_to_client) > 0);
780 TEST_check(BIO_up_ref(client_to_server) > 0);
781 SSL_set_bio(server.ssl, client_to_server, server_to_client);
783 ex_data_idx = SSL_get_ex_new_index(0, "ex data", NULL, NULL, NULL);
784 TEST_check(ex_data_idx >= 0);
786 TEST_check(SSL_set_ex_data(server.ssl, ex_data_idx, &server_ex_data) == 1);
787 TEST_check(SSL_set_ex_data(client.ssl, ex_data_idx, &client_ex_data) == 1);
789 SSL_set_info_callback(server.ssl, &info_cb);
790 SSL_set_info_callback(client.ssl, &info_cb);
792 client.status = server.status = PEER_RETRY;
795 * Half-duplex handshake loop.
796 * Client and server speak to each other synchronously in the same process.
797 * We use non-blocking BIOs, so whenever one peer blocks for read, it
798 * returns PEER_RETRY to indicate that it's the other peer's turn to write.
799 * The handshake succeeds once both peers have succeeded. If one peer
800 * errors out, we also let the other peer retry (and presumably fail).
804 do_connect_step(&client, phase);
805 status = handshake_status(client.status, server.status,
806 1 /* client went last */);
808 do_connect_step(&server, phase);
809 status = handshake_status(server.status, client.status,
810 0 /* server went last */);
814 case HANDSHAKE_SUCCESS:
815 phase = next_phase(phase);
816 if (phase == CONNECTION_DONE) {
817 ret->result = SSL_TEST_SUCCESS;
820 client.status = server.status = PEER_RETRY;
822 * For now, client starts each phase. Since each phase is
823 * started separately, we can later control this more
824 * precisely, for example, to test client-initiated and
825 * server-initiated shutdown.
831 ret->result = SSL_TEST_CLIENT_FAIL;
834 ret->result = SSL_TEST_SERVER_FAIL;
837 ret->result = SSL_TEST_INTERNAL_ERROR;
839 case HANDSHAKE_RETRY:
846 ret->server_alert_sent = server_ex_data.alert_sent;
847 ret->server_num_fatal_alerts_sent = server_ex_data.num_fatal_alerts_sent;
848 ret->server_alert_received = client_ex_data.alert_received;
849 ret->client_alert_sent = client_ex_data.alert_sent;
850 ret->client_num_fatal_alerts_sent = client_ex_data.num_fatal_alerts_sent;
851 ret->client_alert_received = server_ex_data.alert_received;
852 ret->server_protocol = SSL_version(server.ssl);
853 ret->client_protocol = SSL_version(client.ssl);
854 ret->servername = server_ex_data.servername;
855 if ((sess = SSL_get0_session(client.ssl)) != NULL)
856 SSL_SESSION_get0_ticket(sess, &tick, &tick_len);
857 if (tick == NULL || tick_len == 0)
858 ret->session_ticket = SSL_TEST_SESSION_TICKET_NO;
860 ret->session_ticket = SSL_TEST_SESSION_TICKET_YES;
861 ret->session_ticket_do_not_call = server_ex_data.session_ticket_do_not_call;
863 #ifndef OPENSSL_NO_NEXTPROTONEG
864 SSL_get0_next_proto_negotiated(client.ssl, &proto, &proto_len);
865 ret->client_npn_negotiated = dup_str(proto, proto_len);
867 SSL_get0_next_proto_negotiated(server.ssl, &proto, &proto_len);
868 ret->server_npn_negotiated = dup_str(proto, proto_len);
871 SSL_get0_alpn_selected(client.ssl, &proto, &proto_len);
872 ret->client_alpn_negotiated = dup_str(proto, proto_len);
874 SSL_get0_alpn_selected(server.ssl, &proto, &proto_len);
875 ret->server_alpn_negotiated = dup_str(proto, proto_len);
877 ret->client_resumed = SSL_session_reused(client.ssl);
878 ret->server_resumed = SSL_session_reused(server.ssl);
880 if (session_out != NULL)
881 *session_out = SSL_get1_session(client.ssl);
883 ctx_data_free_data(&server_ctx_data);
884 ctx_data_free_data(&server2_ctx_data);
885 ctx_data_free_data(&client_ctx_data);
887 peer_free_data(&server);
888 peer_free_data(&client);
892 HANDSHAKE_RESULT *do_handshake(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
893 SSL_CTX *client_ctx, SSL_CTX *resume_server_ctx,
894 SSL_CTX *resume_client_ctx,
895 const SSL_TEST_CTX *test_ctx)
897 HANDSHAKE_RESULT *result;
898 SSL_SESSION *session = NULL;
900 result = do_handshake_internal(server_ctx, server2_ctx, client_ctx,
901 test_ctx, &test_ctx->extra,
903 if (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_SIMPLE)
906 TEST_check(test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RESUME);
908 if (result->result != SSL_TEST_SUCCESS) {
909 result->result = SSL_TEST_FIRST_HANDSHAKE_FAILED;
913 HANDSHAKE_RESULT_free(result);
914 /* We don't support SNI on second handshake yet, so server2_ctx is NULL. */
915 result = do_handshake_internal(resume_server_ctx, NULL, resume_client_ctx,
916 test_ctx, &test_ctx->resume_extra,
919 SSL_SESSION_free(session);