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_CTX *test,
274 const SSL_TEST_EXTRA_CONF *extra,
275 CTX_DATA *server_ctx_data,
276 CTX_DATA *server2_ctx_data,
277 CTX_DATA *client_ctx_data)
279 unsigned char *ticket_keys;
280 size_t ticket_key_len;
282 TEST_check(SSL_CTX_set_max_send_fragment(server_ctx,
283 test->max_fragment_size) == 1);
284 if (server2_ctx != NULL) {
285 TEST_check(SSL_CTX_set_max_send_fragment(server2_ctx,
286 test->max_fragment_size) == 1);
288 TEST_check(SSL_CTX_set_max_send_fragment(client_ctx,
289 test->max_fragment_size) == 1);
291 switch (extra->client.verify_callback) {
292 case SSL_TEST_VERIFY_ACCEPT_ALL:
293 SSL_CTX_set_cert_verify_callback(client_ctx, &verify_accept_cb,
296 case SSL_TEST_VERIFY_REJECT_ALL:
297 SSL_CTX_set_cert_verify_callback(client_ctx, &verify_reject_cb,
304 /* link the two contexts for SNI purposes */
305 switch (extra->server.servername_callback) {
306 case SSL_TEST_SERVERNAME_IGNORE_MISMATCH:
307 SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_ignore_cb);
308 SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
310 case SSL_TEST_SERVERNAME_REJECT_MISMATCH:
311 SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_reject_cb);
312 SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
319 * The initial_ctx/session_ctx always handles the encrypt/decrypt of the
320 * session ticket. This ticket_key callback is assigned to the second
321 * session (assigned via SNI), and should never be invoked
323 if (server2_ctx != NULL)
324 SSL_CTX_set_tlsext_ticket_key_cb(server2_ctx,
325 do_not_call_session_ticket_cb);
327 if (extra->server.broken_session_ticket) {
328 SSL_CTX_set_tlsext_ticket_key_cb(server_ctx, broken_session_ticket_cb);
330 #ifndef OPENSSL_NO_NEXTPROTONEG
331 if (extra->server.npn_protocols != NULL) {
332 parse_protos(extra->server.npn_protocols,
333 &server_ctx_data->npn_protocols,
334 &server_ctx_data->npn_protocols_len);
335 SSL_CTX_set_next_protos_advertised_cb(server_ctx, server_npn_cb,
338 if (extra->server2.npn_protocols != NULL) {
339 parse_protos(extra->server2.npn_protocols,
340 &server2_ctx_data->npn_protocols,
341 &server2_ctx_data->npn_protocols_len);
342 TEST_check(server2_ctx != NULL);
343 SSL_CTX_set_next_protos_advertised_cb(server2_ctx, server_npn_cb,
346 if (extra->client.npn_protocols != NULL) {
347 parse_protos(extra->client.npn_protocols,
348 &client_ctx_data->npn_protocols,
349 &client_ctx_data->npn_protocols_len);
350 SSL_CTX_set_next_proto_select_cb(client_ctx, client_npn_cb,
354 if (extra->server.alpn_protocols != NULL) {
355 parse_protos(extra->server.alpn_protocols,
356 &server_ctx_data->alpn_protocols,
357 &server_ctx_data->alpn_protocols_len);
358 SSL_CTX_set_alpn_select_cb(server_ctx, server_alpn_cb, server_ctx_data);
360 if (extra->server2.alpn_protocols != NULL) {
361 TEST_check(server2_ctx != NULL);
362 parse_protos(extra->server2.alpn_protocols,
363 &server2_ctx_data->alpn_protocols,
364 &server2_ctx_data->alpn_protocols_len);
365 SSL_CTX_set_alpn_select_cb(server2_ctx, server_alpn_cb, server2_ctx_data);
367 if (extra->client.alpn_protocols != NULL) {
368 unsigned char *alpn_protos = NULL;
369 size_t alpn_protos_len;
370 parse_protos(extra->client.alpn_protocols,
371 &alpn_protos, &alpn_protos_len);
372 /* Reversed return value convention... */
373 TEST_check(SSL_CTX_set_alpn_protos(client_ctx, alpn_protos,
374 alpn_protos_len) == 0);
375 OPENSSL_free(alpn_protos);
379 * Use fixed session ticket keys so that we can decrypt a ticket created with
380 * one CTX in another CTX. Don't address server2 for the moment.
382 ticket_key_len = SSL_CTX_set_tlsext_ticket_keys(server_ctx, NULL, 0);
383 ticket_keys = OPENSSL_zalloc(ticket_key_len);
384 TEST_check(ticket_keys != NULL);
385 TEST_check(SSL_CTX_set_tlsext_ticket_keys(server_ctx, ticket_keys,
386 ticket_key_len) == 1);
387 OPENSSL_free(ticket_keys);
389 /* The default log list includes EC keys, so CT can't work without EC. */
390 #if !defined(OPENSSL_NO_CT) && !defined(OPENSSL_NO_EC)
391 TEST_check(SSL_CTX_set_default_ctlog_list_file(client_ctx));
392 switch (extra->client.ct_validation) {
393 case SSL_TEST_CT_VALIDATION_PERMISSIVE:
394 TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_PERMISSIVE));
396 case SSL_TEST_CT_VALIDATION_STRICT:
397 TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_STRICT));
399 case SSL_TEST_CT_VALIDATION_NONE:
405 /* Configure per-SSL callbacks and other properties. */
406 static void configure_handshake_ssl(SSL *server, SSL *client,
407 const SSL_TEST_EXTRA_CONF *extra)
409 if (extra->client.servername != SSL_TEST_SERVERNAME_NONE)
410 SSL_set_tlsext_host_name(client,
411 ssl_servername_name(extra->client.servername));
414 /* The status for each connection phase. */
421 /* An SSL object and associated read-write buffers. */
422 typedef struct peer_st {
424 /* Buffer lengths are int to match the SSL read/write API. */
425 unsigned char *write_buf;
427 unsigned char *read_buf;
431 peer_status_t status;
434 static void create_peer(PEER *peer, SSL_CTX *ctx)
436 static const int peer_buffer_size = 64 * 1024;
438 peer->ssl = SSL_new(ctx);
439 TEST_check(peer->ssl != NULL);
440 peer->write_buf = OPENSSL_zalloc(peer_buffer_size);
441 TEST_check(peer->write_buf != NULL);
442 peer->read_buf = OPENSSL_zalloc(peer_buffer_size);
443 TEST_check(peer->read_buf != NULL);
444 peer->write_buf_len = peer->read_buf_len = peer_buffer_size;
447 static void peer_free_data(PEER *peer)
450 OPENSSL_free(peer->write_buf);
451 OPENSSL_free(peer->read_buf);
455 * Note that we could do the handshake transparently under an SSL_write,
456 * but separating the steps is more helpful for debugging test failures.
458 static void do_handshake_step(PEER *peer)
462 TEST_check(peer->status == PEER_RETRY);
463 ret = SSL_do_handshake(peer->ssl);
466 peer->status = PEER_SUCCESS;
467 } else if (ret == 0) {
468 peer->status = PEER_ERROR;
470 int error = SSL_get_error(peer->ssl, ret);
471 /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
472 if (error != SSL_ERROR_WANT_READ)
473 peer->status = PEER_ERROR;
478 * Send/receive some application data. The read-write sequence is
479 * Peer A: (R) W - first read will yield no data
486 static void do_app_data_step(PEER *peer)
488 int ret = 1, write_bytes;
490 TEST_check(peer->status == PEER_RETRY);
492 /* We read everything available... */
493 while (ret > 0 && peer->bytes_to_read) {
494 ret = SSL_read(peer->ssl, peer->read_buf, peer->read_buf_len);
496 TEST_check(ret <= peer->bytes_to_read);
497 peer->bytes_to_read -= ret;
498 } else if (ret == 0) {
499 peer->status = PEER_ERROR;
502 int error = SSL_get_error(peer->ssl, ret);
503 if (error != SSL_ERROR_WANT_READ) {
504 peer->status = PEER_ERROR;
506 } /* Else continue with write. */
510 /* ... but we only write one write-buffer-full of data. */
511 write_bytes = peer->bytes_to_write < peer->write_buf_len ? peer->bytes_to_write :
514 ret = SSL_write(peer->ssl, peer->write_buf, write_bytes);
516 /* SSL_write will only succeed with a complete write. */
517 TEST_check(ret == write_bytes);
518 peer->bytes_to_write -= ret;
521 * We should perhaps check for SSL_ERROR_WANT_READ/WRITE here
522 * but this doesn't yet occur with current app data sizes.
524 peer->status = PEER_ERROR;
530 * We could simply finish when there was nothing to read, and we have
531 * nothing left to write. But keeping track of the expected number of bytes
532 * to read gives us somewhat better guarantees that all data sent is in fact
535 if (!peer->bytes_to_write && !peer->bytes_to_read) {
536 peer->status = PEER_SUCCESS;
543 * Note that as of TLS 1.1,
544 * failure to properly close a connection no longer requires that a
545 * session not be resumed. This is a change from TLS 1.0 to conform
546 * with widespread implementation practice.
549 * (a) OpenSSL requires that a connection be shutdown for all protocol versions.
550 * (b) We test lower versions, too.
551 * So we just implement shutdown. We do a full bidirectional shutdown so that we
552 * can compare sent and received close_notify alerts and get some test coverage
553 * for SSL_shutdown as a bonus.
555 static void do_shutdown_step(PEER *peer)
559 TEST_check(peer->status == PEER_RETRY);
560 ret = SSL_shutdown(peer->ssl);
563 peer->status = PEER_SUCCESS;
564 } else if (ret < 0) { /* On 0, we retry. */
565 int error = SSL_get_error(peer->ssl, ret);
566 /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
567 if (error != SSL_ERROR_WANT_READ)
568 peer->status = PEER_ERROR;
579 static connect_phase_t next_phase(connect_phase_t phase)
583 return APPLICATION_DATA;
584 case APPLICATION_DATA:
587 return CONNECTION_DONE;
589 TEST_check(0); /* Should never call next_phase when done. */
593 static void do_connect_step(PEER *peer, connect_phase_t phase)
597 do_handshake_step(peer);
599 case APPLICATION_DATA:
600 do_app_data_step(peer);
603 do_shutdown_step(peer);
611 /* Both parties succeeded. */
613 /* Client errored. */
615 /* Server errored. */
617 /* Peers are in inconsistent state. */
619 /* One or both peers not done. */
621 } handshake_status_t;
624 * Determine the handshake outcome.
625 * last_status: the status of the peer to have acted last.
626 * previous_status: the status of the peer that didn't act last.
627 * client_spoke_last: 1 if the client went last.
629 static handshake_status_t handshake_status(peer_status_t last_status,
630 peer_status_t previous_status,
631 int client_spoke_last)
633 switch (last_status) {
635 switch (previous_status) {
637 /* Both succeeded. */
638 return HANDSHAKE_SUCCESS;
640 /* Let the first peer finish. */
641 return HANDSHAKE_RETRY;
644 * Second peer succeeded despite the fact that the first peer
645 * already errored. This shouldn't happen.
647 return INTERNAL_ERROR;
651 if (previous_status == PEER_RETRY) {
652 /* Neither peer is done. */
653 return HANDSHAKE_RETRY;
656 * Deadlock: second peer is waiting for more input while first
657 * peer thinks they're done (no more input is coming).
659 return INTERNAL_ERROR;
662 switch (previous_status) {
665 * First peer succeeded but second peer errored.
666 * TODO(emilia): we should be able to continue here (with some
667 * application data?) to ensure the first peer receives the
668 * alert / close_notify.
669 * (No tests currently exercise this branch.)
671 return client_spoke_last ? CLIENT_ERROR : SERVER_ERROR;
673 /* We errored; let the peer finish. */
674 return HANDSHAKE_RETRY;
676 /* Both peers errored. Return the one that errored first. */
677 return client_spoke_last ? SERVER_ERROR : CLIENT_ERROR;
680 /* Control should never reach here. */
681 return INTERNAL_ERROR;
684 /* Convert unsigned char buf's that shouldn't contain any NUL-bytes to char. */
685 static char *dup_str(const unsigned char *in, size_t len)
692 /* Assert that the string does not contain NUL-bytes. */
693 TEST_check(OPENSSL_strnlen((const char*)(in), len) == len);
694 ret = OPENSSL_strndup((const char*)(in), len);
695 TEST_check(ret != NULL);
700 * Note that |extra| points to the correct client/server configuration
701 * within |test_ctx|. When configuring the handshake, general mode settings
702 * are taken from |test_ctx|, and client/server-specific settings should be
703 * taken from |extra|.
705 * The configuration code should never reach into |test_ctx->extra| or
706 * |test_ctx->resume_extra| directly.
708 * (We could refactor test mode settings into a substructure. This would result
709 * in cleaner argument passing but would complicate the test configuration
712 static HANDSHAKE_RESULT *do_handshake_internal(
713 SSL_CTX *server_ctx, SSL_CTX *server2_ctx, SSL_CTX *client_ctx,
714 const SSL_TEST_CTX *test_ctx, const SSL_TEST_EXTRA_CONF *extra,
715 SSL_SESSION *session_in, SSL_SESSION **session_out)
718 BIO *client_to_server, *server_to_client;
719 HANDSHAKE_EX_DATA server_ex_data, client_ex_data;
720 CTX_DATA client_ctx_data, server_ctx_data, server2_ctx_data;
721 HANDSHAKE_RESULT *ret = HANDSHAKE_RESULT_new();
723 connect_phase_t phase = HANDSHAKE;
724 handshake_status_t status = HANDSHAKE_RETRY;
725 const unsigned char* tick = NULL;
727 SSL_SESSION* sess = NULL;
728 const unsigned char *proto = NULL;
729 /* API dictates unsigned int rather than size_t. */
730 unsigned int proto_len = 0;
732 memset(&server_ctx_data, 0, sizeof(server_ctx_data));
733 memset(&server2_ctx_data, 0, sizeof(server2_ctx_data));
734 memset(&client_ctx_data, 0, sizeof(client_ctx_data));
735 memset(&server, 0, sizeof(server));
736 memset(&client, 0, sizeof(client));
738 configure_handshake_ctx(server_ctx, server2_ctx, client_ctx, test_ctx, extra,
739 &server_ctx_data, &server2_ctx_data, &client_ctx_data);
741 /* Setup SSL and buffers; additional configuration happens below. */
742 create_peer(&server, server_ctx);
743 create_peer(&client, client_ctx);
745 server.bytes_to_write = client.bytes_to_read = test_ctx->app_data_size;
746 client.bytes_to_write = server.bytes_to_read = test_ctx->app_data_size;
748 configure_handshake_ssl(server.ssl, client.ssl, extra);
749 if (session_in != NULL) {
750 /* In case we're testing resumption without tickets. */
751 TEST_check(SSL_CTX_add_session(server_ctx, session_in));
752 TEST_check(SSL_set_session(client.ssl, session_in));
755 memset(&server_ex_data, 0, sizeof(server_ex_data));
756 memset(&client_ex_data, 0, sizeof(client_ex_data));
758 ret->result = SSL_TEST_INTERNAL_ERROR;
760 client_to_server = BIO_new(BIO_s_mem());
761 server_to_client = BIO_new(BIO_s_mem());
763 TEST_check(client_to_server != NULL);
764 TEST_check(server_to_client != NULL);
766 /* Non-blocking bio. */
767 BIO_set_nbio(client_to_server, 1);
768 BIO_set_nbio(server_to_client, 1);
770 SSL_set_connect_state(client.ssl);
771 SSL_set_accept_state(server.ssl);
773 /* The bios are now owned by the SSL object. */
774 SSL_set_bio(client.ssl, server_to_client, client_to_server);
775 TEST_check(BIO_up_ref(server_to_client) > 0);
776 TEST_check(BIO_up_ref(client_to_server) > 0);
777 SSL_set_bio(server.ssl, client_to_server, server_to_client);
779 ex_data_idx = SSL_get_ex_new_index(0, "ex data", NULL, NULL, NULL);
780 TEST_check(ex_data_idx >= 0);
782 TEST_check(SSL_set_ex_data(server.ssl, ex_data_idx, &server_ex_data) == 1);
783 TEST_check(SSL_set_ex_data(client.ssl, ex_data_idx, &client_ex_data) == 1);
785 SSL_set_info_callback(server.ssl, &info_cb);
786 SSL_set_info_callback(client.ssl, &info_cb);
788 client.status = server.status = PEER_RETRY;
791 * Half-duplex handshake loop.
792 * Client and server speak to each other synchronously in the same process.
793 * We use non-blocking BIOs, so whenever one peer blocks for read, it
794 * returns PEER_RETRY to indicate that it's the other peer's turn to write.
795 * The handshake succeeds once both peers have succeeded. If one peer
796 * errors out, we also let the other peer retry (and presumably fail).
800 do_connect_step(&client, phase);
801 status = handshake_status(client.status, server.status,
802 1 /* client went last */);
804 do_connect_step(&server, phase);
805 status = handshake_status(server.status, client.status,
806 0 /* server went last */);
810 case HANDSHAKE_SUCCESS:
811 phase = next_phase(phase);
812 if (phase == CONNECTION_DONE) {
813 ret->result = SSL_TEST_SUCCESS;
816 client.status = server.status = PEER_RETRY;
818 * For now, client starts each phase. Since each phase is
819 * started separately, we can later control this more
820 * precisely, for example, to test client-initiated and
821 * server-initiated shutdown.
827 ret->result = SSL_TEST_CLIENT_FAIL;
830 ret->result = SSL_TEST_SERVER_FAIL;
833 ret->result = SSL_TEST_INTERNAL_ERROR;
835 case HANDSHAKE_RETRY:
842 ret->server_alert_sent = server_ex_data.alert_sent;
843 ret->server_alert_received = client_ex_data.alert_received;
844 ret->client_alert_sent = client_ex_data.alert_sent;
845 ret->client_alert_received = server_ex_data.alert_received;
846 ret->server_protocol = SSL_version(server.ssl);
847 ret->client_protocol = SSL_version(client.ssl);
848 ret->servername = server_ex_data.servername;
849 if ((sess = SSL_get0_session(client.ssl)) != NULL)
850 SSL_SESSION_get0_ticket(sess, &tick, &tick_len);
851 if (tick == NULL || tick_len == 0)
852 ret->session_ticket = SSL_TEST_SESSION_TICKET_NO;
854 ret->session_ticket = SSL_TEST_SESSION_TICKET_YES;
855 ret->session_ticket_do_not_call = server_ex_data.session_ticket_do_not_call;
857 #ifndef OPENSSL_NO_NEXTPROTONEG
858 SSL_get0_next_proto_negotiated(client.ssl, &proto, &proto_len);
859 ret->client_npn_negotiated = dup_str(proto, proto_len);
861 SSL_get0_next_proto_negotiated(server.ssl, &proto, &proto_len);
862 ret->server_npn_negotiated = dup_str(proto, proto_len);
865 SSL_get0_alpn_selected(client.ssl, &proto, &proto_len);
866 ret->client_alpn_negotiated = dup_str(proto, proto_len);
868 SSL_get0_alpn_selected(server.ssl, &proto, &proto_len);
869 ret->server_alpn_negotiated = dup_str(proto, proto_len);
871 ret->client_resumed = SSL_session_reused(client.ssl);
872 ret->server_resumed = SSL_session_reused(server.ssl);
874 if (session_out != NULL)
875 *session_out = SSL_get1_session(client.ssl);
877 ctx_data_free_data(&server_ctx_data);
878 ctx_data_free_data(&server2_ctx_data);
879 ctx_data_free_data(&client_ctx_data);
881 peer_free_data(&server);
882 peer_free_data(&client);
886 HANDSHAKE_RESULT *do_handshake(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
887 SSL_CTX *client_ctx, SSL_CTX *resume_server_ctx,
888 SSL_CTX *resume_client_ctx,
889 const SSL_TEST_CTX *test_ctx)
891 HANDSHAKE_RESULT *result;
892 SSL_SESSION *session = NULL;
894 result = do_handshake_internal(server_ctx, server2_ctx, client_ctx,
895 test_ctx, &test_ctx->extra,
897 if (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_SIMPLE)
900 TEST_check(test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RESUME);
902 if (result->result != SSL_TEST_SUCCESS) {
903 result->result = SSL_TEST_FIRST_HANDSHAKE_FAILED;
907 HANDSHAKE_RESULT_free(result);
908 /* We don't support SNI on second handshake yet, so server2_ctx is NULL. */
909 result = do_handshake_internal(resume_server_ctx, NULL, resume_client_ctx,
910 test_ctx, &test_ctx->resume_extra,
913 SSL_SESSION_free(session);