2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <openssl/ssl.h>
17 #include <openssl/conf.h>
18 #include <openssl/err.h>
20 #ifdef HAVE_OPENSSL_ASYNC
21 #include <openssl/async.h>
24 #include <vnet/plugin/plugin.h>
25 #include <vpp/app/version.h>
26 #include <vnet/tls/tls.h>
28 #include <tlsopenssl/tls_openssl.h>
30 #define MAX_CRYPTO_LEN 64
32 openssl_main_t openssl_main;
34 openssl_ctx_alloc (void)
36 u8 thread_index = vlib_get_thread_index ();
37 openssl_main_t *tm = &openssl_main;
40 pool_get (tm->ctx_pool[thread_index], ctx);
42 *ctx = clib_mem_alloc (sizeof (openssl_ctx_t));
44 clib_memset (*ctx, 0, sizeof (openssl_ctx_t));
45 (*ctx)->ctx.c_thread_index = thread_index;
46 (*ctx)->ctx.tls_ctx_engine = CRYPTO_ENGINE_OPENSSL;
47 (*ctx)->ctx.app_session_handle = SESSION_INVALID_HANDLE;
48 (*ctx)->openssl_ctx_index = ctx - tm->ctx_pool[thread_index];
49 return ((*ctx)->openssl_ctx_index);
53 openssl_ctx_free (tls_ctx_t * ctx)
55 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
57 if (SSL_is_init_finished (oc->ssl) && !ctx->is_passive_close)
58 SSL_shutdown (oc->ssl);
62 vec_free (ctx->srv_hostname);
63 pool_put_index (openssl_main.ctx_pool[ctx->c_thread_index],
64 oc->openssl_ctx_index);
68 openssl_ctx_get (u32 ctx_index)
71 ctx = pool_elt_at_index (openssl_main.ctx_pool[vlib_get_thread_index ()],
77 openssl_ctx_get_w_thread (u32 ctx_index, u8 thread_index)
80 ctx = pool_elt_at_index (openssl_main.ctx_pool[thread_index], ctx_index);
85 openssl_listen_ctx_alloc (void)
87 openssl_main_t *om = &openssl_main;
88 openssl_listen_ctx_t *lctx;
90 pool_get (om->lctx_pool, lctx);
92 clib_memset (lctx, 0, sizeof (openssl_listen_ctx_t));
93 lctx->openssl_lctx_index = lctx - om->lctx_pool;
94 return lctx->openssl_lctx_index;
98 openssl_listen_ctx_free (openssl_listen_ctx_t * lctx)
100 pool_put_index (openssl_main.lctx_pool, lctx->openssl_lctx_index);
103 openssl_listen_ctx_t *
104 openssl_lctx_get (u32 lctx_index)
106 return pool_elt_at_index (openssl_main.lctx_pool, lctx_index);
110 openssl_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
112 u32 deq_max, deq_now;
116 f = tls_session->rx_fifo;
117 deq_max = svm_fifo_max_dequeue_cons (f);
121 deq_now = clib_min (svm_fifo_max_read_chunk (f), deq_max);
122 wrote = BIO_write (oc->wbio, svm_fifo_head (f), deq_now);
126 svm_fifo_dequeue_drop (f, wrote);
129 deq_now = clib_min (svm_fifo_max_read_chunk (f), deq_max - wrote);
130 rv = BIO_write (oc->wbio, svm_fifo_head (f), deq_now);
133 svm_fifo_dequeue_drop (f, rv);
141 openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
143 u32 enq_max, deq_now;
147 if (BIO_ctrl_pending (oc->rbio) <= 0)
150 f = tls_session->tx_fifo;
151 enq_max = svm_fifo_max_enqueue_prod (f);
155 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
156 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
160 svm_fifo_enqueue_nocopy (f, read);
161 tls_add_vpp_q_tx_evt (tls_session);
165 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
166 rv = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
169 svm_fifo_enqueue_nocopy (f, rv);
177 #ifdef HAVE_OPENSSL_ASYNC
179 vpp_ssl_async_process_event (tls_ctx_t * ctx,
180 openssl_resume_handler * handler)
182 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
183 openssl_tls_callback_t *engine_cb;
185 engine_cb = vpp_add_async_pending_event (ctx, handler);
188 SSL_set_async_callback_arg (oc->ssl, (void *) engine_cb->arg);
189 TLS_DBG (2, "set callback to engine %p\n", engine_cb->callback);
195 /* Due to engine busy stat, VPP need to retry later */
197 vpp_ssl_async_retry_func (tls_ctx_t * ctx, openssl_resume_handler * handler)
200 if (vpp_add_async_run_event (ctx, handler))
210 openssl_handle_handshake_failure (tls_ctx_t * ctx)
212 if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
215 * Cleanup pre-allocated app session and close transport
217 session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
218 ctx->no_app_session = 1;
219 ctx->c_s_index = SESSION_INVALID_INDEX;
220 tls_disconnect_transport (ctx);
225 * Also handles cleanup of the pre-allocated session
227 tls_notify_app_connected (ctx, /* is failed */ 1);
232 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
234 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
236 #ifdef HAVE_OPENSSL_ASYNC
238 openssl_resume_handler *myself;
241 while (SSL_in_init (oc->ssl))
247 else if (!openssl_try_handshake_read (oc, tls_session))
252 #ifdef HAVE_OPENSSL_ASYNC
253 myself = openssl_ctx_handshake_rx;
254 vpp_ssl_async_process_event (ctx, myself);
257 rv = SSL_do_handshake (oc->ssl);
258 err = SSL_get_error (oc->ssl, rv);
260 if (err == SSL_ERROR_SSL)
263 ERR_error_string (ERR_get_error (), buf);
264 clib_warning ("Err: %s", buf);
266 openssl_handle_handshake_failure (ctx);
270 openssl_try_handshake_write (oc, tls_session);
271 #ifdef HAVE_OPENSSL_ASYNC
272 if (err == SSL_ERROR_WANT_ASYNC)
274 SSL_get_async_status (oc->ssl, &estatus);
276 if (estatus == ASYNC_STATUS_EAGAIN)
278 vpp_ssl_async_retry_func (ctx, myself);
283 if (err != SSL_ERROR_WANT_WRITE)
286 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
287 SSL_state_string_long (oc->ssl));
289 if (SSL_in_init (oc->ssl))
295 if (!SSL_is_server (oc->ssl))
298 * Verify server certificate
300 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
302 TLS_DBG (1, " failed verify: %s\n",
303 X509_verify_cert_error_string (rv));
306 * Presence of hostname enforces strict certificate verification
308 if (ctx->srv_hostname)
310 tls_notify_app_connected (ctx, /* is failed */ 0);
314 tls_notify_app_connected (ctx, /* is failed */ 0);
318 tls_notify_app_accept (ctx);
321 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
322 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
327 openssl_confirm_app_close (tls_ctx_t * ctx)
329 tls_disconnect_transport (ctx);
330 session_transport_closed_notify (&ctx->connection);
334 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session)
336 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
337 int wrote = 0, rv, read, max_buf = 100 * TLS_CHUNK_SIZE, max_space;
338 u32 enq_max, deq_max, deq_now, to_write;
339 session_t *tls_session;
342 f = app_session->tx_fifo;
343 deq_max = svm_fifo_max_dequeue_cons (f);
347 max_space = max_buf - BIO_ctrl_pending (oc->rbio);
348 max_space = (max_space < 0) ? 0 : max_space;
349 deq_now = clib_min (deq_max, (u32) max_space);
350 to_write = clib_min (svm_fifo_max_read_chunk (f), deq_now);
351 wrote = SSL_write (oc->ssl, svm_fifo_head (f), to_write);
354 tls_add_vpp_q_builtin_tx_evt (app_session);
357 svm_fifo_dequeue_drop (app_session->tx_fifo, wrote);
360 to_write = clib_min (svm_fifo_max_read_chunk (f), deq_now - wrote);
361 rv = SSL_write (oc->ssl, svm_fifo_head (f), to_write);
364 svm_fifo_dequeue_drop (app_session->tx_fifo, rv);
369 if (svm_fifo_needs_deq_ntf (app_session->tx_fifo, wrote))
370 session_dequeue_notify (app_session);
373 tls_add_vpp_q_builtin_tx_evt (app_session);
377 if (BIO_ctrl_pending (oc->rbio) <= 0)
380 tls_session = session_get_from_handle (ctx->tls_session_handle);
381 f = tls_session->tx_fifo;
382 enq_max = svm_fifo_max_enqueue_prod (f);
385 tls_add_vpp_q_builtin_tx_evt (app_session);
389 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
390 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
393 tls_add_vpp_q_builtin_tx_evt (app_session);
397 svm_fifo_enqueue_nocopy (f, read);
398 tls_add_vpp_q_tx_evt (tls_session);
400 if (read < enq_max && BIO_ctrl_pending (oc->rbio) > 0)
402 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
403 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
405 svm_fifo_enqueue_nocopy (f, read);
408 if (BIO_ctrl_pending (oc->rbio) > 0)
409 tls_add_vpp_q_builtin_tx_evt (app_session);
410 else if (ctx->app_closed)
411 openssl_confirm_app_close (ctx);
417 openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
419 int read, wrote = 0, max_space, max_buf = 100 * TLS_CHUNK_SIZE, rv;
420 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
421 u32 deq_max, enq_max, deq_now, to_read;
422 session_t *app_session;
425 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
427 openssl_ctx_handshake_rx (ctx, tls_session);
431 f = tls_session->rx_fifo;
432 deq_max = svm_fifo_max_dequeue_cons (f);
433 max_space = max_buf - BIO_ctrl_pending (oc->wbio);
434 max_space = max_space < 0 ? 0 : max_space;
435 deq_now = clib_min (deq_max, max_space);
439 to_read = clib_min (svm_fifo_max_read_chunk (f), deq_now);
440 wrote = BIO_write (oc->wbio, svm_fifo_head (f), to_read);
443 tls_add_vpp_q_builtin_rx_evt (tls_session);
446 svm_fifo_dequeue_drop (f, wrote);
449 to_read = clib_min (svm_fifo_max_read_chunk (f), deq_now - wrote);
450 rv = BIO_write (oc->wbio, svm_fifo_head (f), to_read);
453 svm_fifo_dequeue_drop (f, rv);
457 if (svm_fifo_max_dequeue_cons (f))
458 tls_add_vpp_q_builtin_rx_evt (tls_session);
462 if (BIO_ctrl_pending (oc->wbio) <= 0)
465 app_session = session_get_from_handle (ctx->app_session_handle);
466 f = app_session->rx_fifo;
467 enq_max = svm_fifo_max_enqueue_prod (f);
470 tls_add_vpp_q_builtin_rx_evt (tls_session);
474 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
475 read = SSL_read (oc->ssl, svm_fifo_tail (f), deq_now);
478 tls_add_vpp_q_builtin_rx_evt (tls_session);
481 svm_fifo_enqueue_nocopy (f, read);
482 if (read < enq_max && BIO_ctrl_pending (oc->wbio) > 0)
484 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
485 read = SSL_read (oc->ssl, svm_fifo_tail (f), deq_now);
487 svm_fifo_enqueue_nocopy (f, read);
490 tls_notify_app_enqueue (ctx, app_session);
491 if (BIO_ctrl_pending (oc->wbio) > 0)
492 tls_add_vpp_q_builtin_rx_evt (tls_session);
498 openssl_ctx_init_client (tls_ctx_t * ctx)
500 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
501 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
502 openssl_main_t *om = &openssl_main;
503 session_t *tls_session;
504 const SSL_METHOD *method;
506 #ifdef HAVE_OPENSSL_ASYNC
507 openssl_resume_handler *handler;
510 method = SSLv23_client_method ();
513 TLS_DBG (1, "SSLv23_method returned null");
517 oc->ssl_ctx = SSL_CTX_new (method);
518 if (oc->ssl_ctx == NULL)
520 TLS_DBG (1, "SSL_CTX_new returned null");
524 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
525 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
526 #ifdef HAVE_OPENSSL_ASYNC
528 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
530 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
533 TLS_DBG (1, "Couldn't set cipher");
537 SSL_CTX_set_options (oc->ssl_ctx, flags);
538 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
540 oc->ssl = SSL_new (oc->ssl_ctx);
543 TLS_DBG (1, "Couldn't initialize ssl struct");
547 oc->rbio = BIO_new (BIO_s_mem ());
548 oc->wbio = BIO_new (BIO_s_mem ());
550 BIO_set_mem_eof_return (oc->rbio, -1);
551 BIO_set_mem_eof_return (oc->wbio, -1);
553 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
554 SSL_set_connect_state (oc->ssl);
556 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
559 TLS_DBG (1, "Couldn't set hostname");
564 * 2. Do the first steps in the handshake.
566 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
567 oc->openssl_ctx_index);
569 tls_session = session_get_from_handle (ctx->tls_session_handle);
572 rv = SSL_do_handshake (oc->ssl);
573 err = SSL_get_error (oc->ssl, rv);
574 openssl_try_handshake_write (oc, tls_session);
575 #ifdef HAVE_OPENSSL_ASYNC
576 if (err == SSL_ERROR_WANT_ASYNC)
578 handler = (openssl_resume_handler *) openssl_ctx_handshake_rx;
579 vpp_ssl_async_process_event (ctx, handler);
583 if (err != SSL_ERROR_WANT_WRITE)
587 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
588 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
593 openssl_start_listen (tls_ctx_t * lctx)
595 const SSL_METHOD *method;
602 openssl_listen_ctx_t *olc;
603 app_cert_key_pair_t *ckpair;
605 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
606 openssl_main_t *om = &openssl_main;
608 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
612 if (!ckpair->cert || !ckpair->key)
614 TLS_DBG (1, "tls cert and/or key not configured %d",
615 lctx->parent_app_wrk_index);
619 method = SSLv23_method ();
620 ssl_ctx = SSL_CTX_new (method);
623 clib_warning ("Unable to create SSL context");
627 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
628 #ifdef HAVE_OPENSSL_ASYNC
630 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
631 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
633 SSL_CTX_set_options (ssl_ctx, flags);
634 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
636 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
639 TLS_DBG (1, "Couldn't set cipher");
644 * Set the key and cert
646 cert_bio = BIO_new (BIO_s_mem ());
647 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
648 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
651 clib_warning ("unable to parse certificate");
654 SSL_CTX_use_certificate (ssl_ctx, srvcert);
657 cert_bio = BIO_new (BIO_s_mem ());
658 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
659 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
662 clib_warning ("unable to parse pkey");
665 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
668 olc_index = openssl_listen_ctx_alloc ();
669 olc = openssl_lctx_get (olc_index);
670 olc->ssl_ctx = ssl_ctx;
671 olc->srvcert = srvcert;
674 /* store SSL_CTX into TLS level structure */
675 lctx->tls_ssl_ctx = olc_index;
682 openssl_stop_listen (tls_ctx_t * lctx)
685 openssl_listen_ctx_t *olc;
687 olc_index = lctx->tls_ssl_ctx;
688 olc = openssl_lctx_get (olc_index);
690 X509_free (olc->srvcert);
691 EVP_PKEY_free (olc->pkey);
693 SSL_CTX_free (olc->ssl_ctx);
694 openssl_listen_ctx_free (olc);
700 openssl_ctx_init_server (tls_ctx_t * ctx)
702 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
703 u32 olc_index = ctx->tls_ssl_ctx;
704 openssl_listen_ctx_t *olc;
705 session_t *tls_session;
707 #ifdef HAVE_OPENSSL_ASYNC
708 openssl_resume_handler *handler;
711 /* Start a new connection */
713 olc = openssl_lctx_get (olc_index);
714 oc->ssl = SSL_new (olc->ssl_ctx);
717 TLS_DBG (1, "Couldn't initialize ssl struct");
721 oc->rbio = BIO_new (BIO_s_mem ());
722 oc->wbio = BIO_new (BIO_s_mem ());
724 BIO_set_mem_eof_return (oc->rbio, -1);
725 BIO_set_mem_eof_return (oc->wbio, -1);
727 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
728 SSL_set_accept_state (oc->ssl);
730 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
731 oc->openssl_ctx_index);
733 tls_session = session_get_from_handle (ctx->tls_session_handle);
736 rv = SSL_do_handshake (oc->ssl);
737 err = SSL_get_error (oc->ssl, rv);
738 openssl_try_handshake_write (oc, tls_session);
739 #ifdef HAVE_OPENSSL_ASYNC
740 if (err == SSL_ERROR_WANT_ASYNC)
742 handler = (openssl_resume_handler *) openssl_ctx_handshake_rx;
743 vpp_ssl_async_process_event (ctx, handler);
747 if (err != SSL_ERROR_WANT_WRITE)
751 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
752 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
757 openssl_handshake_is_over (tls_ctx_t * ctx)
759 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
762 return SSL_is_init_finished (mc->ssl);
766 openssl_transport_close (tls_ctx_t * ctx)
768 if (!openssl_handshake_is_over (ctx))
770 openssl_handle_handshake_failure (ctx);
773 session_transport_closing_notify (&ctx->connection);
778 openssl_app_close (tls_ctx_t * ctx)
780 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
781 session_t *app_session;
783 /* Wait for all data to be written to tcp */
784 app_session = session_get_from_handle (ctx->app_session_handle);
785 if (BIO_ctrl_pending (oc->rbio) <= 0
786 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
787 openssl_confirm_app_close (ctx);
793 const static tls_engine_vft_t openssl_engine = {
794 .ctx_alloc = openssl_ctx_alloc,
795 .ctx_free = openssl_ctx_free,
796 .ctx_get = openssl_ctx_get,
797 .ctx_get_w_thread = openssl_ctx_get_w_thread,
798 .ctx_init_server = openssl_ctx_init_server,
799 .ctx_init_client = openssl_ctx_init_client,
800 .ctx_write = openssl_ctx_write,
801 .ctx_read = openssl_ctx_read,
802 .ctx_handshake_is_over = openssl_handshake_is_over,
803 .ctx_start_listen = openssl_start_listen,
804 .ctx_stop_listen = openssl_stop_listen,
805 .ctx_transport_close = openssl_transport_close,
806 .ctx_app_close = openssl_app_close,
810 tls_init_ca_chain (void)
812 openssl_main_t *om = &openssl_main;
813 tls_main_t *tm = vnet_tls_get_main ();
818 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
820 clib_warning ("Could not initialize TLS CA certificates");
824 if (!(om->cert_store = X509_STORE_new ()))
826 clib_warning ("failed to create cert store");
830 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
833 clib_warning ("failed to load ca certificate");
836 if (tm->use_test_cert_in_ca)
838 cert_bio = BIO_new (BIO_s_mem ());
839 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
840 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
843 clib_warning ("unable to parse certificate");
846 X509_STORE_add_cert (om->cert_store, testcert);
849 return (rv < 0 ? -1 : 0);
853 tls_openssl_set_ciphers (char *ciphers)
855 openssl_main_t *om = &openssl_main;
863 vec_validate (om->ciphers, strlen (ciphers) - 1);
864 for (i = 0; i < vec_len (om->ciphers); i++)
866 om->ciphers[i] = toupper (ciphers[i]);
873 static clib_error_t *
874 tls_openssl_init (vlib_main_t * vm)
876 vlib_thread_main_t *vtm = vlib_get_thread_main ();
877 openssl_main_t *om = &openssl_main;
878 clib_error_t *error = 0;
881 error = tls_openssl_api_init (vm);
882 num_threads = 1 /* main thread */ + vtm->n_threads;
885 SSL_load_error_strings ();
887 if (tls_init_ca_chain ())
889 clib_warning ("failed to initialize TLS CA chain");
893 vec_validate (om->ctx_pool, num_threads - 1);
895 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
899 /* default ciphers */
900 tls_openssl_set_ciphers
901 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
906 VLIB_INIT_FUNCTION (tls_openssl_init) =
908 .runs_after = VLIB_INITS("tls_init"),
912 #ifdef HAVE_OPENSSL_ASYNC
913 static clib_error_t *
914 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
915 vlib_cli_command_t * cmd)
917 openssl_main_t *om = &openssl_main;
918 char *engine_name = NULL;
919 char *engine_alg = NULL;
920 char *ciphers = NULL;
921 u8 engine_name_set = 0;
924 /* By present, it is not allowed to configure engine again after running */
927 clib_warning ("engine has started!\n");
928 return clib_error_return
929 (0, "engine has started, and no config is accepted");
932 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
934 if (unformat (input, "engine %s", &engine_name))
938 else if (unformat (input, "async"))
941 openssl_async_node_enable_disable (1);
943 else if (unformat (input, "alg %s", &engine_alg))
945 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
946 engine_alg[i] = toupper (engine_alg[i]);
948 else if (unformat (input, "ciphers %s", &ciphers))
950 tls_openssl_set_ciphers (ciphers);
953 return clib_error_return (0, "failed: unknown input `%U'",
954 format_unformat_error, input);
957 /* reset parameters if engine is not configured */
958 if (!engine_name_set)
960 clib_warning ("No engine provided! \n");
965 if (openssl_engine_register (engine_name, engine_alg) < 0)
967 return clib_error_return (0, "failed to register %s polling",
976 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
978 .path = "tls openssl set",
979 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
980 .function = tls_openssl_set_command_fn,
986 VLIB_PLUGIN_REGISTER () = {
987 .version = VPP_BUILD_VER,
988 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
993 * fd.io coding-style-patch-verification: ON
996 * eval: (c-set-style "gnu")