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 {
45 int session_ticket_do_not_call;
46 ssl_servername_t servername;
49 typedef struct ctx_data_st {
50 unsigned char *npn_protocols;
51 size_t npn_protocols_len;
52 unsigned char *alpn_protocols;
53 size_t alpn_protocols_len;
56 /* |ctx_data| itself is stack-allocated. */
57 static void ctx_data_free_data(CTX_DATA *ctx_data)
59 OPENSSL_free(ctx_data->npn_protocols);
60 ctx_data->npn_protocols = NULL;
61 OPENSSL_free(ctx_data->alpn_protocols);
62 ctx_data->alpn_protocols = NULL;
65 static int ex_data_idx;
67 static void info_cb(const SSL *s, int where, int ret)
69 if (where & SSL_CB_ALERT) {
70 HANDSHAKE_EX_DATA *ex_data =
71 (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
72 if (where & SSL_CB_WRITE) {
73 ex_data->alert_sent = ret;
75 ex_data->alert_received = ret;
80 /* Select the appropriate server CTX.
81 * Returns SSL_TLSEXT_ERR_OK if a match was found.
82 * If |ignore| is 1, returns SSL_TLSEXT_ERR_NOACK on mismatch.
83 * Otherwise, returns SSL_TLSEXT_ERR_ALERT_FATAL on mismatch.
84 * An empty SNI extension also returns SSL_TSLEXT_ERR_NOACK.
86 static int select_server_ctx(SSL *s, void *arg, int ignore)
88 const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
89 HANDSHAKE_EX_DATA *ex_data =
90 (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
92 if (servername == NULL) {
93 ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
94 return SSL_TLSEXT_ERR_NOACK;
97 if (strcmp(servername, "server2") == 0) {
98 SSL_CTX *new_ctx = (SSL_CTX*)arg;
99 SSL_set_SSL_CTX(s, new_ctx);
101 * Copy over all the SSL_CTX options - reasonable behavior
102 * allows testing of cases where the options between two
103 * contexts differ/conflict
105 SSL_clear_options(s, 0xFFFFFFFFL);
106 SSL_set_options(s, SSL_CTX_get_options(new_ctx));
108 ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;
109 return SSL_TLSEXT_ERR_OK;
110 } else if (strcmp(servername, "server1") == 0) {
111 ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
112 return SSL_TLSEXT_ERR_OK;
114 ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
115 return SSL_TLSEXT_ERR_NOACK;
117 /* Don't set an explicit alert, to test library defaults. */
118 return SSL_TLSEXT_ERR_ALERT_FATAL;
124 * If the server understood the ClientHello extension but
125 * does not recognize the server name, the server SHOULD take one of two
126 * actions: either abort the handshake by sending a fatal-level
127 * unrecognized_name(112) alert or continue the handshake.
129 * This behaviour is up to the application to configure; we test both
130 * configurations to ensure the state machine propagates the result
133 static int servername_ignore_cb(SSL *s, int *ad, void *arg)
135 return select_server_ctx(s, arg, 1);
138 static int servername_reject_cb(SSL *s, int *ad, void *arg)
140 return select_server_ctx(s, arg, 0);
143 static int verify_reject_cb(X509_STORE_CTX *ctx, void *arg) {
144 X509_STORE_CTX_set_error(ctx, X509_V_ERR_APPLICATION_VERIFICATION);
148 static int verify_accept_cb(X509_STORE_CTX *ctx, void *arg) {
152 static int broken_session_ticket_cb(SSL *s, unsigned char *key_name, unsigned char *iv,
153 EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc)
158 static int do_not_call_session_ticket_cb(SSL *s, unsigned char *key_name,
161 HMAC_CTX *hctx, int enc)
163 HANDSHAKE_EX_DATA *ex_data =
164 (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
165 ex_data->session_ticket_do_not_call = 1;
169 /* Parse the comma-separated list into TLS format. */
170 static void parse_protos(const char *protos, unsigned char **out, size_t *outlen)
172 size_t len, i, prefix;
174 len = strlen(protos);
176 /* Should never have reuse. */
177 TEST_check(*out == NULL);
179 /* Test values are small, so we omit length limit checks. */
180 *out = OPENSSL_malloc(len + 1);
181 TEST_check(*out != NULL);
185 * foo => '3', 'f', 'o', 'o'
186 * foo,bar => '3', 'f', 'o', 'o', '3', 'b', 'a', 'r'
188 memcpy(*out + 1, protos, len);
193 if ((*out)[i] == ',') {
194 TEST_check(i - 1 - prefix > 0);
195 (*out)[prefix] = i - 1 - prefix;
200 TEST_check(len - prefix > 0);
201 (*out)[prefix] = len - prefix;
204 #ifndef OPENSSL_NO_NEXTPROTONEG
206 * The client SHOULD select the first protocol advertised by the server that it
207 * also supports. In the event that the client doesn't support any of server's
208 * protocols, or the server doesn't advertise any, it SHOULD select the first
209 * protocol that it supports.
211 static int client_npn_cb(SSL *s, unsigned char **out, unsigned char *outlen,
212 const unsigned char *in, unsigned int inlen,
215 CTX_DATA *ctx_data = (CTX_DATA*)(arg);
218 ret = SSL_select_next_proto(out, outlen, in, inlen,
219 ctx_data->npn_protocols,
220 ctx_data->npn_protocols_len);
221 /* Accept both OPENSSL_NPN_NEGOTIATED and OPENSSL_NPN_NO_OVERLAP. */
222 TEST_check(ret == OPENSSL_NPN_NEGOTIATED || ret == OPENSSL_NPN_NO_OVERLAP);
223 return SSL_TLSEXT_ERR_OK;
226 static int server_npn_cb(SSL *s, const unsigned char **data,
227 unsigned int *len, void *arg)
229 CTX_DATA *ctx_data = (CTX_DATA*)(arg);
230 *data = ctx_data->npn_protocols;
231 *len = ctx_data->npn_protocols_len;
232 return SSL_TLSEXT_ERR_OK;
237 * The server SHOULD select the most highly preferred protocol that it supports
238 * and that is also advertised by the client. In the event that the server
239 * supports no protocols that the client advertises, then the server SHALL
240 * respond with a fatal "no_application_protocol" alert.
242 static int server_alpn_cb(SSL *s, const unsigned char **out,
243 unsigned char *outlen, const unsigned char *in,
244 unsigned int inlen, void *arg)
246 CTX_DATA *ctx_data = (CTX_DATA*)(arg);
249 /* SSL_select_next_proto isn't const-correct... */
250 unsigned char *tmp_out;
253 * The result points either to |in| or to |ctx_data->alpn_protocols|.
254 * The callback is allowed to point to |in| or to a long-lived buffer,
255 * so we can return directly without storing a copy.
257 ret = SSL_select_next_proto(&tmp_out, outlen,
258 ctx_data->alpn_protocols,
259 ctx_data->alpn_protocols_len, in, inlen);
262 /* Unlike NPN, we don't tolerate a mismatch. */
263 return ret == OPENSSL_NPN_NEGOTIATED ? SSL_TLSEXT_ERR_OK
264 : SSL_TLSEXT_ERR_NOACK;
268 * Configure callbacks and other properties that can't be set directly
269 * in the server/client CONF.
271 static void configure_handshake_ctx(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
273 const SSL_TEST_EXTRA_CONF *extra,
274 CTX_DATA *server_ctx_data,
275 CTX_DATA *server2_ctx_data,
276 CTX_DATA *client_ctx_data)
278 unsigned char *ticket_keys;
279 size_t ticket_key_len;
281 switch (extra->client.verify_callback) {
282 case SSL_TEST_VERIFY_ACCEPT_ALL:
283 SSL_CTX_set_cert_verify_callback(client_ctx, &verify_accept_cb,
286 case SSL_TEST_VERIFY_REJECT_ALL:
287 SSL_CTX_set_cert_verify_callback(client_ctx, &verify_reject_cb,
294 /* link the two contexts for SNI purposes */
295 switch (extra->server.servername_callback) {
296 case SSL_TEST_SERVERNAME_IGNORE_MISMATCH:
297 SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_ignore_cb);
298 SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
300 case SSL_TEST_SERVERNAME_REJECT_MISMATCH:
301 SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_reject_cb);
302 SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
309 * The initial_ctx/session_ctx always handles the encrypt/decrypt of the
310 * session ticket. This ticket_key callback is assigned to the second
311 * session (assigned via SNI), and should never be invoked
313 if (server2_ctx != NULL)
314 SSL_CTX_set_tlsext_ticket_key_cb(server2_ctx,
315 do_not_call_session_ticket_cb);
317 if (extra->server.broken_session_ticket) {
318 SSL_CTX_set_tlsext_ticket_key_cb(server_ctx, broken_session_ticket_cb);
320 #ifndef OPENSSL_NO_NEXTPROTONEG
321 if (extra->server.npn_protocols != NULL) {
322 parse_protos(extra->server.npn_protocols,
323 &server_ctx_data->npn_protocols,
324 &server_ctx_data->npn_protocols_len);
325 SSL_CTX_set_next_protos_advertised_cb(server_ctx, server_npn_cb,
328 if (extra->server2.npn_protocols != NULL) {
329 parse_protos(extra->server2.npn_protocols,
330 &server2_ctx_data->npn_protocols,
331 &server2_ctx_data->npn_protocols_len);
332 TEST_check(server2_ctx != NULL);
333 SSL_CTX_set_next_protos_advertised_cb(server2_ctx, server_npn_cb,
336 if (extra->client.npn_protocols != NULL) {
337 parse_protos(extra->client.npn_protocols,
338 &client_ctx_data->npn_protocols,
339 &client_ctx_data->npn_protocols_len);
340 SSL_CTX_set_next_proto_select_cb(client_ctx, client_npn_cb,
344 if (extra->server.alpn_protocols != NULL) {
345 parse_protos(extra->server.alpn_protocols,
346 &server_ctx_data->alpn_protocols,
347 &server_ctx_data->alpn_protocols_len);
348 SSL_CTX_set_alpn_select_cb(server_ctx, server_alpn_cb, server_ctx_data);
350 if (extra->server2.alpn_protocols != NULL) {
351 TEST_check(server2_ctx != NULL);
352 parse_protos(extra->server2.alpn_protocols,
353 &server2_ctx_data->alpn_protocols,
354 &server2_ctx_data->alpn_protocols_len);
355 SSL_CTX_set_alpn_select_cb(server2_ctx, server_alpn_cb, server2_ctx_data);
357 if (extra->client.alpn_protocols != NULL) {
358 unsigned char *alpn_protos = NULL;
359 size_t alpn_protos_len;
360 parse_protos(extra->client.alpn_protocols,
361 &alpn_protos, &alpn_protos_len);
362 /* Reversed return value convention... */
363 TEST_check(SSL_CTX_set_alpn_protos(client_ctx, alpn_protos,
364 alpn_protos_len) == 0);
365 OPENSSL_free(alpn_protos);
369 * Use fixed session ticket keys so that we can decrypt a ticket created with
370 * one CTX in another CTX. Don't address server2 for the moment.
372 ticket_key_len = SSL_CTX_set_tlsext_ticket_keys(server_ctx, NULL, 0);
373 ticket_keys = OPENSSL_zalloc(ticket_key_len);
374 TEST_check(ticket_keys != NULL);
375 TEST_check(SSL_CTX_set_tlsext_ticket_keys(server_ctx, ticket_keys,
376 ticket_key_len) == 1);
377 OPENSSL_free(ticket_keys);
379 /* The default log list includes EC keys, so CT can't work without EC. */
380 #if !defined(OPENSSL_NO_CT) && !defined(OPENSSL_NO_EC)
381 TEST_check(SSL_CTX_set_default_ctlog_list_file(client_ctx));
382 switch (extra->client.ct_validation) {
383 case SSL_TEST_CT_VALIDATION_PERMISSIVE:
384 TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_PERMISSIVE));
386 case SSL_TEST_CT_VALIDATION_STRICT:
387 TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_STRICT));
389 case SSL_TEST_CT_VALIDATION_NONE:
395 /* Configure per-SSL callbacks and other properties. */
396 static void configure_handshake_ssl(SSL *server, SSL *client,
397 const SSL_TEST_EXTRA_CONF *extra)
399 if (extra->client.servername != SSL_TEST_SERVERNAME_NONE)
400 SSL_set_tlsext_host_name(client,
401 ssl_servername_name(extra->client.servername));
404 /* The status for each connection phase. */
411 /* An SSL object and associated read-write buffers. */
412 typedef struct peer_st {
414 /* Buffer lengths are int to match the SSL read/write API. */
415 unsigned char *write_buf;
417 unsigned char *read_buf;
421 peer_status_t status;
424 static void create_peer(PEER *peer, SSL_CTX *ctx)
426 static const int peer_buffer_size = 64 * 1024;
428 peer->ssl = SSL_new(ctx);
429 TEST_check(peer->ssl != NULL);
430 peer->write_buf = OPENSSL_zalloc(peer_buffer_size);
431 TEST_check(peer->write_buf != NULL);
432 peer->read_buf = OPENSSL_zalloc(peer_buffer_size);
433 TEST_check(peer->read_buf != NULL);
434 peer->write_buf_len = peer->read_buf_len = peer_buffer_size;
437 static void peer_free_data(PEER *peer)
440 OPENSSL_free(peer->write_buf);
441 OPENSSL_free(peer->read_buf);
445 * Note that we could do the handshake transparently under an SSL_write,
446 * but separating the steps is more helpful for debugging test failures.
448 static void do_handshake_step(PEER *peer)
452 TEST_check(peer->status == PEER_RETRY);
453 ret = SSL_do_handshake(peer->ssl);
456 peer->status = PEER_SUCCESS;
457 } else if (ret == 0) {
458 peer->status = PEER_ERROR;
460 int error = SSL_get_error(peer->ssl, ret);
461 /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
462 if (error != SSL_ERROR_WANT_READ)
463 peer->status = PEER_ERROR;
468 * Send/receive some application data. The read-write sequence is
469 * Peer A: (R) W - first read will yield no data
476 static void do_app_data_step(PEER *peer)
478 int ret = 1, write_bytes;
480 TEST_check(peer->status == PEER_RETRY);
482 /* We read everything available... */
483 while (ret > 0 && peer->bytes_to_read) {
484 ret = SSL_read(peer->ssl, peer->read_buf, peer->read_buf_len);
486 TEST_check(ret <= peer->bytes_to_read);
487 peer->bytes_to_read -= ret;
488 } else if (ret == 0) {
489 peer->status = PEER_ERROR;
492 int error = SSL_get_error(peer->ssl, ret);
493 if (error != SSL_ERROR_WANT_READ) {
494 peer->status = PEER_ERROR;
496 } /* Else continue with write. */
500 /* ... but we only write one write-buffer-full of data. */
501 write_bytes = peer->bytes_to_write < peer->write_buf_len ? peer->bytes_to_write :
504 ret = SSL_write(peer->ssl, peer->write_buf, write_bytes);
506 /* SSL_write will only succeed with a complete write. */
507 TEST_check(ret == write_bytes);
508 peer->bytes_to_write -= ret;
511 * We should perhaps check for SSL_ERROR_WANT_READ/WRITE here
512 * but this doesn't yet occur with current app data sizes.
514 peer->status = PEER_ERROR;
520 * We could simply finish when there was nothing to read, and we have
521 * nothing left to write. But keeping track of the expected number of bytes
522 * to read gives us somewhat better guarantees that all data sent is in fact
525 if (!peer->bytes_to_write && !peer->bytes_to_read) {
526 peer->status = PEER_SUCCESS;
533 * Note that as of TLS 1.1,
534 * failure to properly close a connection no longer requires that a
535 * session not be resumed. This is a change from TLS 1.0 to conform
536 * with widespread implementation practice.
539 * (a) OpenSSL requires that a connection be shutdown for all protocol versions.
540 * (b) We test lower versions, too.
541 * So we just implement shutdown. We do a full bidirectional shutdown so that we
542 * can compare sent and received close_notify alerts and get some test coverage
543 * for SSL_shutdown as a bonus.
545 static void do_shutdown_step(PEER *peer)
549 TEST_check(peer->status == PEER_RETRY);
550 ret = SSL_shutdown(peer->ssl);
553 peer->status = PEER_SUCCESS;
554 } else if (ret < 0) { /* On 0, we retry. */
555 int error = SSL_get_error(peer->ssl, ret);
556 /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
557 if (error != SSL_ERROR_WANT_READ)
558 peer->status = PEER_ERROR;
569 static connect_phase_t next_phase(connect_phase_t phase)
573 return APPLICATION_DATA;
574 case APPLICATION_DATA:
577 return CONNECTION_DONE;
579 TEST_check(0); /* Should never call next_phase when done. */
583 static void do_connect_step(PEER *peer, connect_phase_t phase)
587 do_handshake_step(peer);
589 case APPLICATION_DATA:
590 do_app_data_step(peer);
593 do_shutdown_step(peer);
601 /* Both parties succeeded. */
603 /* Client errored. */
605 /* Server errored. */
607 /* Peers are in inconsistent state. */
609 /* One or both peers not done. */
611 } handshake_status_t;
614 * Determine the handshake outcome.
615 * last_status: the status of the peer to have acted last.
616 * previous_status: the status of the peer that didn't act last.
617 * client_spoke_last: 1 if the client went last.
619 static handshake_status_t handshake_status(peer_status_t last_status,
620 peer_status_t previous_status,
621 int client_spoke_last)
623 switch (last_status) {
625 switch (previous_status) {
627 /* Both succeeded. */
628 return HANDSHAKE_SUCCESS;
630 /* Let the first peer finish. */
631 return HANDSHAKE_RETRY;
634 * Second peer succeeded despite the fact that the first peer
635 * already errored. This shouldn't happen.
637 return INTERNAL_ERROR;
641 if (previous_status == PEER_RETRY) {
642 /* Neither peer is done. */
643 return HANDSHAKE_RETRY;
646 * Deadlock: second peer is waiting for more input while first
647 * peer thinks they're done (no more input is coming).
649 return INTERNAL_ERROR;
652 switch (previous_status) {
655 * First peer succeeded but second peer errored.
656 * TODO(emilia): we should be able to continue here (with some
657 * application data?) to ensure the first peer receives the
658 * alert / close_notify.
659 * (No tests currently exercise this branch.)
661 return client_spoke_last ? CLIENT_ERROR : SERVER_ERROR;
663 /* We errored; let the peer finish. */
664 return HANDSHAKE_RETRY;
666 /* Both peers errored. Return the one that errored first. */
667 return client_spoke_last ? SERVER_ERROR : CLIENT_ERROR;
670 /* Control should never reach here. */
671 return INTERNAL_ERROR;
674 /* Convert unsigned char buf's that shouldn't contain any NUL-bytes to char. */
675 static char *dup_str(const unsigned char *in, size_t len)
682 /* Assert that the string does not contain NUL-bytes. */
683 TEST_check(OPENSSL_strnlen((const char*)(in), len) == len);
684 ret = OPENSSL_strndup((const char*)(in), len);
685 TEST_check(ret != NULL);
689 static HANDSHAKE_RESULT *do_handshake_internal(
690 SSL_CTX *server_ctx, SSL_CTX *server2_ctx, SSL_CTX *client_ctx,
691 const SSL_TEST_EXTRA_CONF *extra, int app_data_size,
692 SSL_SESSION *session_in, SSL_SESSION **session_out)
695 BIO *client_to_server, *server_to_client;
696 HANDSHAKE_EX_DATA server_ex_data, client_ex_data;
697 CTX_DATA client_ctx_data, server_ctx_data, server2_ctx_data;
698 HANDSHAKE_RESULT *ret = HANDSHAKE_RESULT_new();
700 connect_phase_t phase = HANDSHAKE;
701 handshake_status_t status = HANDSHAKE_RETRY;
702 const unsigned char* tick = NULL;
704 SSL_SESSION* sess = NULL;
705 const unsigned char *proto = NULL;
706 /* API dictates unsigned int rather than size_t. */
707 unsigned int proto_len = 0;
709 memset(&server_ctx_data, 0, sizeof(server_ctx_data));
710 memset(&server2_ctx_data, 0, sizeof(server2_ctx_data));
711 memset(&client_ctx_data, 0, sizeof(client_ctx_data));
712 memset(&server, 0, sizeof(server));
713 memset(&client, 0, sizeof(client));
715 configure_handshake_ctx(server_ctx, server2_ctx, client_ctx, extra,
716 &server_ctx_data, &server2_ctx_data, &client_ctx_data);
718 /* Setup SSL and buffers; additional configuration happens below. */
719 create_peer(&server, server_ctx);
720 create_peer(&client, client_ctx);
722 server.bytes_to_write = client.bytes_to_read = app_data_size;
723 client.bytes_to_write = server.bytes_to_read = app_data_size;
725 configure_handshake_ssl(server.ssl, client.ssl, extra);
726 if (session_in != NULL) {
727 /* In case we're testing resumption without tickets. */
728 TEST_check(SSL_CTX_add_session(server_ctx, session_in));
729 TEST_check(SSL_set_session(client.ssl, session_in));
732 memset(&server_ex_data, 0, sizeof(server_ex_data));
733 memset(&client_ex_data, 0, sizeof(client_ex_data));
735 ret->result = SSL_TEST_INTERNAL_ERROR;
737 client_to_server = BIO_new(BIO_s_mem());
738 server_to_client = BIO_new(BIO_s_mem());
740 TEST_check(client_to_server != NULL);
741 TEST_check(server_to_client != NULL);
743 /* Non-blocking bio. */
744 BIO_set_nbio(client_to_server, 1);
745 BIO_set_nbio(server_to_client, 1);
747 SSL_set_connect_state(client.ssl);
748 SSL_set_accept_state(server.ssl);
750 /* The bios are now owned by the SSL object. */
751 SSL_set_bio(client.ssl, server_to_client, client_to_server);
752 TEST_check(BIO_up_ref(server_to_client) > 0);
753 TEST_check(BIO_up_ref(client_to_server) > 0);
754 SSL_set_bio(server.ssl, client_to_server, server_to_client);
756 ex_data_idx = SSL_get_ex_new_index(0, "ex data", NULL, NULL, NULL);
757 TEST_check(ex_data_idx >= 0);
759 TEST_check(SSL_set_ex_data(server.ssl, ex_data_idx, &server_ex_data) == 1);
760 TEST_check(SSL_set_ex_data(client.ssl, ex_data_idx, &client_ex_data) == 1);
762 SSL_set_info_callback(server.ssl, &info_cb);
763 SSL_set_info_callback(client.ssl, &info_cb);
765 client.status = server.status = PEER_RETRY;
768 * Half-duplex handshake loop.
769 * Client and server speak to each other synchronously in the same process.
770 * We use non-blocking BIOs, so whenever one peer blocks for read, it
771 * returns PEER_RETRY to indicate that it's the other peer's turn to write.
772 * The handshake succeeds once both peers have succeeded. If one peer
773 * errors out, we also let the other peer retry (and presumably fail).
777 do_connect_step(&client, phase);
778 status = handshake_status(client.status, server.status,
779 1 /* client went last */);
781 do_connect_step(&server, phase);
782 status = handshake_status(server.status, client.status,
783 0 /* server went last */);
787 case HANDSHAKE_SUCCESS:
788 phase = next_phase(phase);
789 if (phase == CONNECTION_DONE) {
790 ret->result = SSL_TEST_SUCCESS;
793 client.status = server.status = PEER_RETRY;
795 * For now, client starts each phase. Since each phase is
796 * started separately, we can later control this more
797 * precisely, for example, to test client-initiated and
798 * server-initiated shutdown.
804 ret->result = SSL_TEST_CLIENT_FAIL;
807 ret->result = SSL_TEST_SERVER_FAIL;
810 ret->result = SSL_TEST_INTERNAL_ERROR;
812 case HANDSHAKE_RETRY:
819 ret->server_alert_sent = server_ex_data.alert_sent;
820 ret->server_alert_received = client_ex_data.alert_received;
821 ret->client_alert_sent = client_ex_data.alert_sent;
822 ret->client_alert_received = server_ex_data.alert_received;
823 ret->server_protocol = SSL_version(server.ssl);
824 ret->client_protocol = SSL_version(client.ssl);
825 ret->servername = server_ex_data.servername;
826 if ((sess = SSL_get0_session(client.ssl)) != NULL)
827 SSL_SESSION_get0_ticket(sess, &tick, &tick_len);
828 if (tick == NULL || tick_len == 0)
829 ret->session_ticket = SSL_TEST_SESSION_TICKET_NO;
831 ret->session_ticket = SSL_TEST_SESSION_TICKET_YES;
832 ret->session_ticket_do_not_call = server_ex_data.session_ticket_do_not_call;
834 #ifndef OPENSSL_NO_NEXTPROTONEG
835 SSL_get0_next_proto_negotiated(client.ssl, &proto, &proto_len);
836 ret->client_npn_negotiated = dup_str(proto, proto_len);
838 SSL_get0_next_proto_negotiated(server.ssl, &proto, &proto_len);
839 ret->server_npn_negotiated = dup_str(proto, proto_len);
842 SSL_get0_alpn_selected(client.ssl, &proto, &proto_len);
843 ret->client_alpn_negotiated = dup_str(proto, proto_len);
845 SSL_get0_alpn_selected(server.ssl, &proto, &proto_len);
846 ret->server_alpn_negotiated = dup_str(proto, proto_len);
848 ret->client_resumed = SSL_session_reused(client.ssl);
849 ret->server_resumed = SSL_session_reused(server.ssl);
851 if (session_out != NULL)
852 *session_out = SSL_get1_session(client.ssl);
854 ctx_data_free_data(&server_ctx_data);
855 ctx_data_free_data(&server2_ctx_data);
856 ctx_data_free_data(&client_ctx_data);
858 peer_free_data(&server);
859 peer_free_data(&client);
863 HANDSHAKE_RESULT *do_handshake(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
864 SSL_CTX *client_ctx, SSL_CTX *resume_server_ctx,
865 SSL_CTX *resume_client_ctx,
866 const SSL_TEST_CTX *test_ctx)
868 HANDSHAKE_RESULT *result;
869 SSL_SESSION *session = NULL;
871 result = do_handshake_internal(server_ctx, server2_ctx, client_ctx,
872 &test_ctx->extra, test_ctx->app_data_size,
874 if (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_SIMPLE)
877 TEST_check(test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RESUME);
879 if (result->result != SSL_TEST_SUCCESS) {
880 result->result = SSL_TEST_FIRST_HANDSHAKE_FAILED;
884 HANDSHAKE_RESULT_free(result);
885 /* We don't support SNI on second handshake yet, so server2_ctx is NULL. */
886 result = do_handshake_internal(resume_server_ctx, NULL, resume_client_ctx,
887 &test_ctx->resume_extra, test_ctx->app_data_size,
890 SSL_SESSION_free(session);