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 #ifdef HAVE_OPENSSL_ASYNC
63 openssl_evt_free (ctx->evt_index, ctx->c_thread_index);
65 vec_free (ctx->srv_hostname);
66 pool_put_index (openssl_main.ctx_pool[ctx->c_thread_index],
67 oc->openssl_ctx_index);
71 openssl_ctx_get (u32 ctx_index)
74 ctx = pool_elt_at_index (openssl_main.ctx_pool[vlib_get_thread_index ()],
80 openssl_ctx_get_w_thread (u32 ctx_index, u8 thread_index)
83 ctx = pool_elt_at_index (openssl_main.ctx_pool[thread_index], ctx_index);
88 openssl_listen_ctx_alloc (void)
90 openssl_main_t *om = &openssl_main;
91 openssl_listen_ctx_t *lctx;
93 pool_get (om->lctx_pool, lctx);
95 clib_memset (lctx, 0, sizeof (openssl_listen_ctx_t));
96 lctx->openssl_lctx_index = lctx - om->lctx_pool;
97 return lctx->openssl_lctx_index;
101 openssl_listen_ctx_free (openssl_listen_ctx_t * lctx)
103 pool_put_index (openssl_main.lctx_pool, lctx->openssl_lctx_index);
106 openssl_listen_ctx_t *
107 openssl_lctx_get (u32 lctx_index)
109 return pool_elt_at_index (openssl_main.lctx_pool, lctx_index);
113 openssl_read_from_bio_into_fifo (svm_fifo_t * f, BIO * bio)
115 u32 enq_now, enq_max;
119 enq_max = svm_fifo_max_enqueue_prod (f);
123 svm_fifo_fill_chunk_list (f);
125 enq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
129 read = BIO_read (bio, svm_fifo_tail (f), enq_now);
135 c = svm_fifo_tail_chunk (f);
136 while (read < enq_max)
139 enq_now = clib_min (c->length, enq_max - read);
140 rv = BIO_read (bio, c->data, enq_now);
141 read += rv > 0 ? rv : 0;
148 svm_fifo_enqueue_nocopy (f, read);
154 openssl_read_from_ssl_into_fifo (svm_fifo_t * f, SSL * ssl)
156 u32 enq_now, enq_max;
160 enq_max = svm_fifo_max_enqueue_prod (f);
164 svm_fifo_fill_chunk_list (f);
166 enq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
170 read = SSL_read (ssl, svm_fifo_tail (f), enq_now);
176 c = svm_fifo_tail_chunk (f);
177 while (read < enq_max)
182 enq_now = clib_min (c->length, enq_max - read);
183 rv = SSL_read (ssl, c->data, enq_now);
184 read += rv > 0 ? rv : 0;
191 svm_fifo_enqueue_nocopy (f, read);
197 openssl_write_from_fifo_into_bio (svm_fifo_t * f, BIO * bio, u32 len)
203 svm_fifo_fill_chunk_list (f);
205 deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
206 wrote = BIO_write (bio, svm_fifo_head (f), deq_now);
210 if (wrote == deq_now)
212 c = svm_fifo_head_chunk (f);
216 deq_now = clib_min (c->length, len - wrote);
217 rv = BIO_write (bio, c->data, deq_now);
218 wrote += rv > 0 ? rv : 0;
225 svm_fifo_dequeue_drop (f, wrote);
231 openssl_write_from_fifo_into_ssl (svm_fifo_t * f, SSL * ssl, u32 len)
237 svm_fifo_fill_chunk_list (f);
239 deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
240 wrote = SSL_write (ssl, svm_fifo_head (f), deq_now);
244 if (wrote == deq_now)
246 c = svm_fifo_head_chunk (f);
250 deq_now = clib_min (c->length, len - wrote);
251 rv = SSL_write (ssl, c->data, deq_now);
252 wrote += rv > 0 ? rv : 0;
259 svm_fifo_dequeue_drop (f, wrote);
265 openssl_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
270 f = tls_session->rx_fifo;
271 deq_max = svm_fifo_max_dequeue_cons (f);
275 return openssl_write_from_fifo_into_bio (f, oc->wbio, deq_max);
279 openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
283 if (BIO_ctrl_pending (oc->rbio) <= 0)
286 read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio);
288 tls_add_vpp_q_tx_evt (tls_session);
293 #ifdef HAVE_OPENSSL_ASYNC
295 openssl_check_async_status (tls_ctx_t * ctx, openssl_resume_handler * handler,
298 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
301 SSL_get_async_status (oc->ssl, &estatus);
302 if (estatus == ASYNC_STATUS_EAGAIN)
304 vpp_tls_async_update_event (ctx, 1);
308 vpp_tls_async_update_event (ctx, 0);
318 openssl_handle_handshake_failure (tls_ctx_t * ctx)
320 session_t *app_session;
322 if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
325 * Cleanup pre-allocated app session and close transport
328 session_get_if_valid (ctx->c_s_index, ctx->c_thread_index);
331 session_free (app_session);
332 ctx->no_app_session = 1;
333 ctx->c_s_index = SESSION_INVALID_INDEX;
334 tls_disconnect_transport (ctx);
340 * Also handles cleanup of the pre-allocated session
342 tls_notify_app_connected (ctx, /* is failed */ 1);
347 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
349 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
352 while (SSL_in_init (oc->ssl))
358 else if (!openssl_try_handshake_read (oc, tls_session))
361 rv = SSL_do_handshake (oc->ssl);
362 err = SSL_get_error (oc->ssl, rv);
364 #ifdef HAVE_OPENSSL_ASYNC
365 if (err == SSL_ERROR_WANT_ASYNC)
367 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
371 if (err == SSL_ERROR_SSL)
374 ERR_error_string (ERR_get_error (), buf);
375 clib_warning ("Err: %s", buf);
377 openssl_handle_handshake_failure (ctx);
381 openssl_try_handshake_write (oc, tls_session);
383 if (err != SSL_ERROR_WANT_WRITE)
386 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
387 SSL_state_string_long (oc->ssl));
389 if (SSL_in_init (oc->ssl))
395 if (!SSL_is_server (oc->ssl))
398 * Verify server certificate
400 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
402 TLS_DBG (1, " failed verify: %s\n",
403 X509_verify_cert_error_string (rv));
406 * Presence of hostname enforces strict certificate verification
408 if (ctx->srv_hostname)
410 tls_notify_app_connected (ctx, /* is failed */ 0);
414 tls_notify_app_connected (ctx, /* is failed */ 0);
418 /* Need to check transport status */
419 if (ctx->is_passive_close)
420 openssl_handle_handshake_failure (ctx);
422 tls_notify_app_accept (ctx);
425 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
426 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
431 openssl_confirm_app_close (tls_ctx_t * ctx)
433 tls_disconnect_transport (ctx);
434 session_transport_closed_notify (&ctx->connection);
438 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session)
440 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
441 int wrote = 0, read, max_buf = 100 * TLS_CHUNK_SIZE, max_space;
442 u32 deq_max, to_write;
443 session_t *tls_session;
446 f = app_session->tx_fifo;
448 deq_max = svm_fifo_max_dequeue_cons (f);
452 /* Figure out how much data to write */
453 max_space = max_buf - BIO_ctrl_pending (oc->rbio);
454 max_space = (max_space < 0) ? 0 : max_space;
455 to_write = clib_min (deq_max, (u32) max_space);
457 wrote = openssl_write_from_fifo_into_ssl (f, oc->ssl, to_write);
460 tls_add_vpp_q_builtin_tx_evt (app_session);
464 if (svm_fifo_needs_deq_ntf (f, wrote))
465 session_dequeue_notify (app_session);
467 if (svm_fifo_max_dequeue_cons (f))
468 tls_add_vpp_q_builtin_tx_evt (app_session);
472 if (BIO_ctrl_pending (oc->rbio) <= 0)
475 tls_session = session_get_from_handle (ctx->tls_session_handle);
477 read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio);
480 tls_add_vpp_q_builtin_tx_evt (app_session);
484 tls_add_vpp_q_tx_evt (tls_session);
486 if (BIO_ctrl_pending (oc->rbio) > 0)
487 tls_add_vpp_q_builtin_tx_evt (app_session);
488 else if (ctx->app_closed)
489 openssl_confirm_app_close (ctx);
495 openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
497 int read, wrote = 0, max_space, max_buf = 100 * TLS_CHUNK_SIZE;
498 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
499 u32 deq_max, to_write;
500 session_t *app_session;
503 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
505 if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
511 f = tls_session->rx_fifo;
513 deq_max = svm_fifo_max_dequeue_cons (f);
514 max_space = max_buf - BIO_ctrl_pending (oc->wbio);
515 max_space = max_space < 0 ? 0 : max_space;
516 to_write = clib_min (deq_max, max_space);
520 wrote = openssl_write_from_fifo_into_bio (f, oc->wbio, to_write);
523 tls_add_vpp_q_builtin_rx_evt (tls_session);
527 if (svm_fifo_max_dequeue_cons (f))
528 tls_add_vpp_q_builtin_rx_evt (tls_session);
532 if (BIO_ctrl_pending (oc->wbio) <= 0)
535 app_session = session_get_from_handle (ctx->app_session_handle);
536 f = app_session->rx_fifo;
538 read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
541 tls_add_vpp_q_builtin_rx_evt (tls_session);
545 /* If handshake just completed, session may still be in accepting state */
546 if (app_session->session_state >= SESSION_STATE_READY)
547 tls_notify_app_enqueue (ctx, app_session);
548 if (SSL_pending (oc->ssl) > 0)
549 tls_add_vpp_q_builtin_rx_evt (tls_session);
555 openssl_ctx_init_client (tls_ctx_t * ctx)
557 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
558 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
559 openssl_main_t *om = &openssl_main;
560 session_t *tls_session;
561 const SSL_METHOD *method;
564 method = SSLv23_client_method ();
567 TLS_DBG (1, "SSLv23_method returned null");
571 oc->ssl_ctx = SSL_CTX_new (method);
572 if (oc->ssl_ctx == NULL)
574 TLS_DBG (1, "SSL_CTX_new returned null");
578 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
579 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
580 #ifdef HAVE_OPENSSL_ASYNC
582 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
584 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
587 TLS_DBG (1, "Couldn't set cipher");
591 SSL_CTX_set_options (oc->ssl_ctx, flags);
592 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
594 oc->ssl = SSL_new (oc->ssl_ctx);
597 TLS_DBG (1, "Couldn't initialize ssl struct");
601 oc->rbio = BIO_new (BIO_s_mem ());
602 oc->wbio = BIO_new (BIO_s_mem ());
604 BIO_set_mem_eof_return (oc->rbio, -1);
605 BIO_set_mem_eof_return (oc->wbio, -1);
607 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
608 SSL_set_connect_state (oc->ssl);
610 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
613 TLS_DBG (1, "Couldn't set hostname");
618 * 2. Do the first steps in the handshake.
620 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
621 oc->openssl_ctx_index);
623 tls_session = session_get_from_handle (ctx->tls_session_handle);
625 #ifdef HAVE_OPENSSL_ASYNC
626 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
630 rv = SSL_do_handshake (oc->ssl);
631 err = SSL_get_error (oc->ssl, rv);
632 openssl_try_handshake_write (oc, tls_session);
633 #ifdef HAVE_OPENSSL_ASYNC
634 if (err == SSL_ERROR_WANT_ASYNC)
636 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
641 if (err != SSL_ERROR_WANT_WRITE)
645 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
646 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
651 openssl_start_listen (tls_ctx_t * lctx)
653 const SSL_METHOD *method;
660 openssl_listen_ctx_t *olc;
661 app_cert_key_pair_t *ckpair;
663 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
664 openssl_main_t *om = &openssl_main;
666 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
670 if (!ckpair->cert || !ckpair->key)
672 TLS_DBG (1, "tls cert and/or key not configured %d",
673 lctx->parent_app_wrk_index);
677 method = SSLv23_method ();
678 ssl_ctx = SSL_CTX_new (method);
681 clib_warning ("Unable to create SSL context");
685 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
686 #ifdef HAVE_OPENSSL_ASYNC
689 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
690 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
693 SSL_CTX_set_options (ssl_ctx, flags);
694 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
696 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
699 TLS_DBG (1, "Couldn't set cipher");
704 * Set the key and cert
706 cert_bio = BIO_new (BIO_s_mem ());
707 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
708 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
711 clib_warning ("unable to parse certificate");
714 SSL_CTX_use_certificate (ssl_ctx, srvcert);
717 cert_bio = BIO_new (BIO_s_mem ());
718 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
719 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
722 clib_warning ("unable to parse pkey");
725 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
728 olc_index = openssl_listen_ctx_alloc ();
729 olc = openssl_lctx_get (olc_index);
730 olc->ssl_ctx = ssl_ctx;
731 olc->srvcert = srvcert;
734 /* store SSL_CTX into TLS level structure */
735 lctx->tls_ssl_ctx = olc_index;
742 openssl_stop_listen (tls_ctx_t * lctx)
745 openssl_listen_ctx_t *olc;
747 olc_index = lctx->tls_ssl_ctx;
748 olc = openssl_lctx_get (olc_index);
750 X509_free (olc->srvcert);
751 EVP_PKEY_free (olc->pkey);
753 SSL_CTX_free (olc->ssl_ctx);
754 openssl_listen_ctx_free (olc);
760 openssl_ctx_init_server (tls_ctx_t * ctx)
762 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
763 u32 olc_index = ctx->tls_ssl_ctx;
764 openssl_listen_ctx_t *olc;
765 session_t *tls_session;
768 /* Start a new connection */
770 olc = openssl_lctx_get (olc_index);
771 oc->ssl = SSL_new (olc->ssl_ctx);
774 TLS_DBG (1, "Couldn't initialize ssl struct");
778 oc->rbio = BIO_new (BIO_s_mem ());
779 oc->wbio = BIO_new (BIO_s_mem ());
781 BIO_set_mem_eof_return (oc->rbio, -1);
782 BIO_set_mem_eof_return (oc->wbio, -1);
784 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
785 SSL_set_accept_state (oc->ssl);
787 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
788 oc->openssl_ctx_index);
790 tls_session = session_get_from_handle (ctx->tls_session_handle);
791 #ifdef HAVE_OPENSSL_ASYNC
792 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
796 rv = SSL_do_handshake (oc->ssl);
797 err = SSL_get_error (oc->ssl, rv);
798 openssl_try_handshake_write (oc, tls_session);
799 #ifdef HAVE_OPENSSL_ASYNC
800 if (err == SSL_ERROR_WANT_ASYNC)
802 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
807 if (err != SSL_ERROR_WANT_WRITE)
811 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
812 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
817 openssl_handshake_is_over (tls_ctx_t * ctx)
819 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
822 return SSL_is_init_finished (mc->ssl);
826 openssl_transport_close (tls_ctx_t * ctx)
828 #ifdef HAVE_OPENSSL_ASYNC
829 if (vpp_openssl_is_inflight (ctx))
833 if (!openssl_handshake_is_over (ctx))
835 openssl_handle_handshake_failure (ctx);
838 session_transport_closing_notify (&ctx->connection);
843 openssl_app_close (tls_ctx_t * ctx)
845 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
846 session_t *app_session;
848 /* Wait for all data to be written to tcp */
849 app_session = session_get_from_handle (ctx->app_session_handle);
850 if (BIO_ctrl_pending (oc->rbio) <= 0
851 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
852 openssl_confirm_app_close (ctx);
858 const static tls_engine_vft_t openssl_engine = {
859 .ctx_alloc = openssl_ctx_alloc,
860 .ctx_free = openssl_ctx_free,
861 .ctx_get = openssl_ctx_get,
862 .ctx_get_w_thread = openssl_ctx_get_w_thread,
863 .ctx_init_server = openssl_ctx_init_server,
864 .ctx_init_client = openssl_ctx_init_client,
865 .ctx_write = openssl_ctx_write,
866 .ctx_read = openssl_ctx_read,
867 .ctx_handshake_is_over = openssl_handshake_is_over,
868 .ctx_start_listen = openssl_start_listen,
869 .ctx_stop_listen = openssl_stop_listen,
870 .ctx_transport_close = openssl_transport_close,
871 .ctx_app_close = openssl_app_close,
875 tls_init_ca_chain (void)
877 openssl_main_t *om = &openssl_main;
878 tls_main_t *tm = vnet_tls_get_main ();
883 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
885 clib_warning ("Could not initialize TLS CA certificates");
889 if (!(om->cert_store = X509_STORE_new ()))
891 clib_warning ("failed to create cert store");
895 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
896 rv = X509_STORE_load_file (om->cert_store, tm->ca_cert_path);
898 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
903 clib_warning ("failed to load ca certificate");
906 if (tm->use_test_cert_in_ca)
908 cert_bio = BIO_new (BIO_s_mem ());
909 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
910 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
913 clib_warning ("unable to parse certificate");
916 X509_STORE_add_cert (om->cert_store, testcert);
919 return (rv < 0 ? -1 : 0);
923 tls_openssl_set_ciphers (char *ciphers)
925 openssl_main_t *om = &openssl_main;
933 vec_validate (om->ciphers, strlen (ciphers) - 1);
934 for (i = 0; i < vec_len (om->ciphers); i++)
936 om->ciphers[i] = toupper (ciphers[i]);
943 static clib_error_t *
944 tls_openssl_init (vlib_main_t * vm)
946 vlib_thread_main_t *vtm = vlib_get_thread_main ();
947 openssl_main_t *om = &openssl_main;
948 clib_error_t *error = 0;
951 error = tls_openssl_api_init (vm);
952 num_threads = 1 /* main thread */ + vtm->n_threads;
955 SSL_load_error_strings ();
957 if (tls_init_ca_chain ())
959 clib_warning ("failed to initialize TLS CA chain");
963 vec_validate (om->ctx_pool, num_threads - 1);
965 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
969 /* default ciphers */
970 tls_openssl_set_ciphers
971 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
976 VLIB_INIT_FUNCTION (tls_openssl_init) =
978 .runs_after = VLIB_INITS("tls_init"),
982 #ifdef HAVE_OPENSSL_ASYNC
983 static clib_error_t *
984 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
985 vlib_cli_command_t * cmd)
987 openssl_main_t *om = &openssl_main;
988 char *engine_name = NULL;
989 char *engine_alg = NULL;
990 char *ciphers = NULL;
991 u8 engine_name_set = 0;
994 /* By present, it is not allowed to configure engine again after running */
997 clib_warning ("engine has started!\n");
998 return clib_error_return
999 (0, "engine has started, and no config is accepted");
1002 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1004 if (unformat (input, "engine %s", &engine_name))
1006 engine_name_set = 1;
1008 else if (unformat (input, "async"))
1012 else if (unformat (input, "alg %s", &engine_alg))
1014 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
1015 engine_alg[i] = toupper (engine_alg[i]);
1017 else if (unformat (input, "ciphers %s", &ciphers))
1019 tls_openssl_set_ciphers (ciphers);
1022 return clib_error_return (0, "failed: unknown input `%U'",
1023 format_unformat_error, input);
1026 /* reset parameters if engine is not configured */
1027 if (!engine_name_set)
1029 clib_warning ("No engine provided! \n");
1034 vnet_session_enable_disable (vm, 1);
1035 if (openssl_engine_register (engine_name, engine_alg, async) < 0)
1037 return clib_error_return (0, "Failed to register %s polling",
1042 vlib_cli_output (vm, "Successfully register engine %s\n",
1052 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
1054 .path = "tls openssl set",
1055 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
1056 .function = tls_openssl_set_command_fn,
1062 VLIB_PLUGIN_REGISTER () = {
1063 .version = VPP_BUILD_VER,
1064 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
1069 * fd.io coding-style-patch-verification: ON
1072 * eval: (c-set-style "gnu")