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>
19 #ifdef HAVE_OPENSSL_ASYNC
20 #include <openssl/async.h>
23 #include <vnet/plugin/plugin.h>
24 #include <vpp/app/version.h>
25 #include <vnet/tls/tls.h>
27 #include <tlsopenssl/tls_openssl.h>
29 #define MAX_CRYPTO_LEN 16
31 static openssl_main_t openssl_main;
33 openssl_ctx_alloc (void)
35 u8 thread_index = vlib_get_thread_index ();
36 openssl_main_t *tm = &openssl_main;
39 pool_get (tm->ctx_pool[thread_index], ctx);
41 *ctx = clib_mem_alloc (sizeof (openssl_ctx_t));
43 clib_memset (*ctx, 0, sizeof (openssl_ctx_t));
44 (*ctx)->ctx.c_thread_index = thread_index;
45 (*ctx)->ctx.tls_ctx_engine = TLS_ENGINE_OPENSSL;
46 (*ctx)->ctx.app_session_handle = SESSION_INVALID_HANDLE;
47 (*ctx)->openssl_ctx_index = ctx - tm->ctx_pool[thread_index];
48 return ((*ctx)->openssl_ctx_index);
52 openssl_ctx_free (tls_ctx_t * ctx)
54 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
56 if (SSL_is_init_finished (oc->ssl) && !ctx->is_passive_close)
57 SSL_shutdown (oc->ssl);
61 vec_free (ctx->srv_hostname);
62 pool_put_index (openssl_main.ctx_pool[ctx->c_thread_index],
63 oc->openssl_ctx_index);
67 openssl_ctx_get (u32 ctx_index)
70 ctx = pool_elt_at_index (openssl_main.ctx_pool[vlib_get_thread_index ()],
76 openssl_ctx_get_w_thread (u32 ctx_index, u8 thread_index)
79 ctx = pool_elt_at_index (openssl_main.ctx_pool[thread_index], ctx_index);
84 openssl_listen_ctx_alloc (void)
86 openssl_main_t *om = &openssl_main;
87 openssl_listen_ctx_t *lctx;
89 pool_get (om->lctx_pool, lctx);
91 clib_memset (lctx, 0, sizeof (openssl_listen_ctx_t));
92 lctx->openssl_lctx_index = lctx - om->lctx_pool;
93 return lctx->openssl_lctx_index;
97 openssl_listen_ctx_free (openssl_listen_ctx_t * lctx)
99 pool_put_index (openssl_main.lctx_pool, lctx->openssl_lctx_index);
102 openssl_listen_ctx_t *
103 openssl_lctx_get (u32 lctx_index)
105 return pool_elt_at_index (openssl_main.lctx_pool, lctx_index);
109 openssl_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
111 u32 deq_max, deq_now;
115 f = tls_session->rx_fifo;
116 deq_max = svm_fifo_max_dequeue_cons (f);
120 deq_now = clib_min (svm_fifo_max_read_chunk (f), deq_max);
121 wrote = BIO_write (oc->wbio, svm_fifo_head (f), deq_now);
125 svm_fifo_dequeue_drop (f, wrote);
128 deq_now = clib_min (svm_fifo_max_read_chunk (f), deq_max - wrote);
129 rv = BIO_write (oc->wbio, svm_fifo_head (f), deq_now);
132 svm_fifo_dequeue_drop (f, rv);
140 openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
142 u32 enq_max, deq_now;
146 if (BIO_ctrl_pending (oc->rbio) <= 0)
149 f = tls_session->tx_fifo;
150 enq_max = svm_fifo_max_enqueue_prod (f);
154 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
155 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
159 svm_fifo_enqueue_nocopy (f, read);
160 tls_add_vpp_q_tx_evt (tls_session);
164 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
165 rv = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
168 svm_fifo_enqueue_nocopy (f, rv);
176 #ifdef HAVE_OPENSSL_ASYNC
178 vpp_ssl_async_process_event (tls_ctx_t * ctx,
179 openssl_resume_handler * handler)
181 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
182 openssl_tls_callback_t *engine_cb;
184 engine_cb = vpp_add_async_pending_event (ctx, handler);
187 SSL_set_async_callback_arg (oc->ssl, (void *) engine_cb->arg);
188 TLS_DBG (2, "set callback to engine %p\n", engine_cb->callback);
194 /* Due to engine busy stat, VPP need to retry later */
196 vpp_ssl_async_retry_func (tls_ctx_t * ctx, openssl_resume_handler * handler)
199 if (vpp_add_async_run_event (ctx, handler))
209 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
211 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
213 #ifdef HAVE_OPENSSL_ASYNC
215 openssl_resume_handler *myself;
218 while (SSL_in_init (oc->ssl))
224 else if (!openssl_try_handshake_read (oc, tls_session))
229 #ifdef HAVE_OPENSSL_ASYNC
230 myself = openssl_ctx_handshake_rx;
231 vpp_ssl_async_process_event (ctx, myself);
234 rv = SSL_do_handshake (oc->ssl);
235 err = SSL_get_error (oc->ssl, rv);
237 if (err == SSL_ERROR_SSL)
240 ERR_error_string (ERR_get_error (), buf);
241 clib_warning ("Err: %s", buf);
244 * Cleanup pre-allocated app session and close transport
246 if (SSL_is_server (oc->ssl))
248 session_free (session_get (ctx->c_s_index,
249 ctx->c_thread_index));
250 ctx->no_app_session = 1;
251 ctx->c_s_index = SESSION_INVALID_INDEX;
252 tls_disconnect_transport (ctx);
255 tls_notify_app_connected (ctx, /* is failed */ 1);
259 openssl_try_handshake_write (oc, tls_session);
260 #ifdef HAVE_OPENSSL_ASYNC
261 if (err == SSL_ERROR_WANT_ASYNC)
263 SSL_get_async_status (oc->ssl, &estatus);
265 if (estatus == ASYNC_STATUS_EAGAIN)
267 vpp_ssl_async_retry_func (ctx, myself);
272 if (err != SSL_ERROR_WANT_WRITE)
275 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
276 SSL_state_string_long (oc->ssl));
278 if (SSL_in_init (oc->ssl))
284 if (!SSL_is_server (oc->ssl))
287 * Verify server certificate
289 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
291 TLS_DBG (1, " failed verify: %s\n",
292 X509_verify_cert_error_string (rv));
295 * Presence of hostname enforces strict certificate verification
297 if (ctx->srv_hostname)
299 tls_notify_app_connected (ctx, /* is failed */ 0);
303 tls_notify_app_connected (ctx, /* is failed */ 0);
307 tls_notify_app_accept (ctx);
310 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
311 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
316 openssl_confirm_app_close (tls_ctx_t * ctx)
318 tls_disconnect_transport (ctx);
319 session_transport_closed_notify (&ctx->connection);
323 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session)
325 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
326 int wrote = 0, rv, read, max_buf = 100 * TLS_CHUNK_SIZE, max_space;
327 u32 enq_max, deq_max, deq_now, to_write;
328 session_t *tls_session;
331 f = app_session->tx_fifo;
332 deq_max = svm_fifo_max_dequeue_cons (f);
336 max_space = max_buf - BIO_ctrl_pending (oc->rbio);
337 max_space = (max_space < 0) ? 0 : max_space;
338 deq_now = clib_min (deq_max, (u32) max_space);
339 to_write = clib_min (svm_fifo_max_read_chunk (f), deq_now);
340 wrote = SSL_write (oc->ssl, svm_fifo_head (f), to_write);
343 tls_add_vpp_q_builtin_tx_evt (app_session);
346 svm_fifo_dequeue_drop (app_session->tx_fifo, wrote);
349 to_write = clib_min (svm_fifo_max_read_chunk (f), deq_now - wrote);
350 rv = SSL_write (oc->ssl, svm_fifo_head (f), to_write);
353 svm_fifo_dequeue_drop (app_session->tx_fifo, rv);
358 if (svm_fifo_needs_deq_ntf (app_session->tx_fifo, wrote))
359 session_dequeue_notify (app_session);
362 tls_add_vpp_q_builtin_tx_evt (app_session);
366 if (BIO_ctrl_pending (oc->rbio) <= 0)
369 tls_session = session_get_from_handle (ctx->tls_session_handle);
370 f = tls_session->tx_fifo;
371 enq_max = svm_fifo_max_enqueue_prod (f);
374 tls_add_vpp_q_builtin_tx_evt (app_session);
378 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
379 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
382 tls_add_vpp_q_builtin_tx_evt (app_session);
386 svm_fifo_enqueue_nocopy (f, read);
387 tls_add_vpp_q_tx_evt (tls_session);
389 if (read < enq_max && BIO_ctrl_pending (oc->rbio) > 0)
391 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
392 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
394 svm_fifo_enqueue_nocopy (f, read);
397 if (BIO_ctrl_pending (oc->rbio) > 0)
398 tls_add_vpp_q_builtin_tx_evt (app_session);
399 else if (ctx->app_closed)
400 openssl_confirm_app_close (ctx);
406 openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
408 int read, wrote = 0, max_space, max_buf = 100 * TLS_CHUNK_SIZE, rv;
409 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
410 u32 deq_max, enq_max, deq_now, to_read;
411 session_t *app_session;
414 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
416 openssl_ctx_handshake_rx (ctx, tls_session);
420 f = tls_session->rx_fifo;
421 deq_max = svm_fifo_max_dequeue_cons (f);
422 max_space = max_buf - BIO_ctrl_pending (oc->wbio);
423 max_space = max_space < 0 ? 0 : max_space;
424 deq_now = clib_min (deq_max, max_space);
428 to_read = clib_min (svm_fifo_max_read_chunk (f), deq_now);
429 wrote = BIO_write (oc->wbio, svm_fifo_head (f), to_read);
432 tls_add_vpp_q_builtin_rx_evt (tls_session);
435 svm_fifo_dequeue_drop (f, wrote);
438 to_read = clib_min (svm_fifo_max_read_chunk (f), deq_now - wrote);
439 rv = BIO_write (oc->wbio, svm_fifo_head (f), to_read);
442 svm_fifo_dequeue_drop (f, rv);
446 if (svm_fifo_max_dequeue_cons (f))
447 tls_add_vpp_q_builtin_rx_evt (tls_session);
451 if (BIO_ctrl_pending (oc->wbio) <= 0)
454 app_session = session_get_from_handle (ctx->app_session_handle);
455 f = app_session->rx_fifo;
456 enq_max = svm_fifo_max_enqueue_prod (f);
459 tls_add_vpp_q_builtin_rx_evt (tls_session);
463 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
464 read = SSL_read (oc->ssl, svm_fifo_tail (f), deq_now);
467 tls_add_vpp_q_builtin_rx_evt (tls_session);
470 svm_fifo_enqueue_nocopy (f, read);
471 if (read < enq_max && BIO_ctrl_pending (oc->wbio) > 0)
473 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
474 read = SSL_read (oc->ssl, svm_fifo_tail (f), deq_now);
476 svm_fifo_enqueue_nocopy (f, read);
479 tls_notify_app_enqueue (ctx, app_session);
480 if (BIO_ctrl_pending (oc->wbio) > 0)
481 tls_add_vpp_q_builtin_rx_evt (tls_session);
487 openssl_ctx_init_client (tls_ctx_t * ctx)
489 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
490 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
491 openssl_main_t *om = &openssl_main;
492 session_t *tls_session;
493 const SSL_METHOD *method;
495 #ifdef HAVE_OPENSSL_ASYNC
496 openssl_resume_handler *handler;
499 method = SSLv23_client_method ();
502 TLS_DBG (1, "SSLv23_method returned null");
506 oc->ssl_ctx = SSL_CTX_new (method);
507 if (oc->ssl_ctx == NULL)
509 TLS_DBG (1, "SSL_CTX_new returned null");
513 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
514 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
515 #ifdef HAVE_OPENSSL_ASYNC
517 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
519 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
522 TLS_DBG (1, "Couldn't set cipher");
526 SSL_CTX_set_options (oc->ssl_ctx, flags);
527 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
529 oc->ssl = SSL_new (oc->ssl_ctx);
532 TLS_DBG (1, "Couldn't initialize ssl struct");
536 oc->rbio = BIO_new (BIO_s_mem ());
537 oc->wbio = BIO_new (BIO_s_mem ());
539 BIO_set_mem_eof_return (oc->rbio, -1);
540 BIO_set_mem_eof_return (oc->wbio, -1);
542 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
543 SSL_set_connect_state (oc->ssl);
545 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
548 TLS_DBG (1, "Couldn't set hostname");
553 * 2. Do the first steps in the handshake.
555 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
556 oc->openssl_ctx_index);
558 tls_session = session_get_from_handle (ctx->tls_session_handle);
561 rv = SSL_do_handshake (oc->ssl);
562 err = SSL_get_error (oc->ssl, rv);
563 openssl_try_handshake_write (oc, tls_session);
564 #ifdef HAVE_OPENSSL_ASYNC
565 if (err == SSL_ERROR_WANT_ASYNC)
567 handler = (openssl_resume_handler *) openssl_ctx_handshake_rx;
568 vpp_ssl_async_process_event (ctx, handler);
572 if (err != SSL_ERROR_WANT_WRITE)
576 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
577 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
582 openssl_start_listen (tls_ctx_t * lctx)
585 const SSL_METHOD *method;
592 openssl_listen_ctx_t *olc;
593 app_worker_t *app_wrk;
595 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
596 openssl_main_t *om = &openssl_main;
598 app_wrk = app_worker_get (lctx->parent_app_wrk_index);
602 app = application_get (app_wrk->app_index);
603 if (!app->tls_cert || !app->tls_key)
605 TLS_DBG (1, "tls cert and/or key not configured %d",
606 lctx->parent_app_wrk_index);
610 method = SSLv23_method ();
611 ssl_ctx = SSL_CTX_new (method);
614 clib_warning ("Unable to create SSL context");
618 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
619 #ifdef HAVE_OPENSSL_ASYNC
621 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
622 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
624 SSL_CTX_set_options (ssl_ctx, flags);
625 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
627 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
630 TLS_DBG (1, "Couldn't set cipher");
635 * Set the key and cert
637 cert_bio = BIO_new (BIO_s_mem ());
638 BIO_write (cert_bio, app->tls_cert, vec_len (app->tls_cert));
639 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
642 clib_warning ("unable to parse certificate");
645 SSL_CTX_use_certificate (ssl_ctx, srvcert);
648 cert_bio = BIO_new (BIO_s_mem ());
649 BIO_write (cert_bio, app->tls_key, vec_len (app->tls_key));
650 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
653 clib_warning ("unable to parse pkey");
656 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
659 olc_index = openssl_listen_ctx_alloc ();
660 olc = openssl_lctx_get (olc_index);
661 olc->ssl_ctx = ssl_ctx;
662 olc->srvcert = srvcert;
665 /* store SSL_CTX into TLS level structure */
666 lctx->tls_ssl_ctx = olc_index;
673 openssl_stop_listen (tls_ctx_t * lctx)
676 openssl_listen_ctx_t *olc;
678 olc_index = lctx->tls_ssl_ctx;
679 olc = openssl_lctx_get (olc_index);
681 X509_free (olc->srvcert);
682 EVP_PKEY_free (olc->pkey);
684 SSL_CTX_free (olc->ssl_ctx);
685 openssl_listen_ctx_free (olc);
691 openssl_ctx_init_server (tls_ctx_t * ctx)
693 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
694 u32 olc_index = ctx->tls_ssl_ctx;
695 openssl_listen_ctx_t *olc;
696 session_t *tls_session;
698 #ifdef HAVE_OPENSSL_ASYNC
699 openssl_resume_handler *handler;
702 /* Start a new connection */
704 olc = openssl_lctx_get (olc_index);
705 oc->ssl = SSL_new (olc->ssl_ctx);
708 TLS_DBG (1, "Couldn't initialize ssl struct");
712 oc->rbio = BIO_new (BIO_s_mem ());
713 oc->wbio = BIO_new (BIO_s_mem ());
715 BIO_set_mem_eof_return (oc->rbio, -1);
716 BIO_set_mem_eof_return (oc->wbio, -1);
718 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
719 SSL_set_accept_state (oc->ssl);
721 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
722 oc->openssl_ctx_index);
724 tls_session = session_get_from_handle (ctx->tls_session_handle);
727 rv = SSL_do_handshake (oc->ssl);
728 err = SSL_get_error (oc->ssl, rv);
729 openssl_try_handshake_write (oc, tls_session);
730 #ifdef HAVE_OPENSSL_ASYNC
731 if (err == SSL_ERROR_WANT_ASYNC)
733 handler = (openssl_resume_handler *) openssl_ctx_handshake_rx;
734 vpp_ssl_async_process_event (ctx, handler);
738 if (err != SSL_ERROR_WANT_WRITE)
742 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
743 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
748 openssl_handshake_is_over (tls_ctx_t * ctx)
750 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
753 return SSL_is_init_finished (mc->ssl);
757 openssl_transport_close (tls_ctx_t * ctx)
759 if (!openssl_handshake_is_over (ctx))
761 session_close (session_get_from_handle (ctx->tls_session_handle));
764 session_transport_closing_notify (&ctx->connection);
769 openssl_app_close (tls_ctx_t * ctx)
771 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
772 session_t *app_session;
774 /* Wait for all data to be written to tcp */
775 app_session = session_get_from_handle (ctx->app_session_handle);
776 if (BIO_ctrl_pending (oc->rbio) <= 0
777 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
778 openssl_confirm_app_close (ctx);
784 const static tls_engine_vft_t openssl_engine = {
785 .ctx_alloc = openssl_ctx_alloc,
786 .ctx_free = openssl_ctx_free,
787 .ctx_get = openssl_ctx_get,
788 .ctx_get_w_thread = openssl_ctx_get_w_thread,
789 .ctx_init_server = openssl_ctx_init_server,
790 .ctx_init_client = openssl_ctx_init_client,
791 .ctx_write = openssl_ctx_write,
792 .ctx_read = openssl_ctx_read,
793 .ctx_handshake_is_over = openssl_handshake_is_over,
794 .ctx_start_listen = openssl_start_listen,
795 .ctx_stop_listen = openssl_stop_listen,
796 .ctx_transport_close = openssl_transport_close,
797 .ctx_app_close = openssl_app_close,
801 tls_init_ca_chain (void)
803 openssl_main_t *om = &openssl_main;
804 tls_main_t *tm = vnet_tls_get_main ();
809 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
811 clib_warning ("Could not initialize TLS CA certificates");
815 if (!(om->cert_store = X509_STORE_new ()))
817 clib_warning ("failed to create cert store");
821 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
824 clib_warning ("failed to load ca certificate");
827 if (tm->use_test_cert_in_ca)
829 cert_bio = BIO_new (BIO_s_mem ());
830 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
831 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
834 clib_warning ("unable to parse certificate");
837 X509_STORE_add_cert (om->cert_store, testcert);
840 return (rv < 0 ? -1 : 0);
844 tls_openssl_set_ciphers (char *ciphers)
846 openssl_main_t *om = &openssl_main;
854 vec_validate (om->ciphers, strlen (ciphers) - 1);
855 for (i = 0; i < vec_len (om->ciphers); i++)
857 om->ciphers[i] = toupper (ciphers[i]);
864 static clib_error_t *
865 tls_openssl_init (vlib_main_t * vm)
867 vlib_thread_main_t *vtm = vlib_get_thread_main ();
868 openssl_main_t *om = &openssl_main;
871 num_threads = 1 /* main thread */ + vtm->n_threads;
874 SSL_load_error_strings ();
876 if (tls_init_ca_chain ())
878 clib_warning ("failed to initialize TLS CA chain");
882 vec_validate (om->ctx_pool, num_threads - 1);
884 tls_register_engine (&openssl_engine, TLS_ENGINE_OPENSSL);
888 /* default ciphers */
889 tls_openssl_set_ciphers
890 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
895 VLIB_INIT_FUNCTION (tls_openssl_init) =
897 .runs_after = VLIB_INITS("tls_init"),
901 #ifdef HAVE_OPENSSL_ASYNC
902 static clib_error_t *
903 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
904 vlib_cli_command_t * cmd)
906 openssl_main_t *om = &openssl_main;
907 char *engine_name = NULL;
908 char *engine_alg = NULL;
909 char *ciphers = NULL;
910 u8 engine_name_set = 0;
913 /* By present, it is not allowed to configure engine again after running */
916 clib_warning ("engine has started!\n");
917 return clib_error_return
918 (0, "engine has started, and no config is accepted");
921 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
923 if (unformat (input, "engine %s", &engine_name))
927 else if (unformat (input, "async"))
930 openssl_async_node_enable_disable (1);
932 else if (unformat (input, "alg %s", &engine_alg))
934 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
935 engine_alg[i] = toupper (engine_alg[i]);
937 else if (unformat (input, "ciphers %s", &ciphers))
939 tls_openssl_set_ciphers (ciphers);
942 return clib_error_return (0, "failed: unknown input `%U'",
943 format_unformat_error, input);
946 /* reset parameters if engine is not configured */
947 if (!engine_name_set)
949 clib_warning ("No engine provided! \n");
954 if (!openssl_engine_register (engine_name, engine_alg))
956 return clib_error_return (0, "failed to register %s polling",
965 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
967 .path = "tls openssl set",
968 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
969 .function = tls_openssl_set_command_fn,
975 VLIB_PLUGIN_REGISTER () = {
976 .version = VPP_BUILD_VER,
977 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
982 * fd.io coding-style-patch-verification: ON
985 * eval: (c-set-style "gnu")