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 deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
204 wrote = BIO_write (bio, svm_fifo_head (f), deq_now);
208 if (wrote == deq_now)
210 c = svm_fifo_head_chunk (f);
214 deq_now = clib_min (c->length, len - wrote);
215 rv = BIO_write (bio, c->data, deq_now);
216 wrote += rv > 0 ? rv : 0;
223 svm_fifo_dequeue_drop (f, wrote);
229 openssl_write_from_fifo_into_ssl (svm_fifo_t * f, SSL * ssl, u32 len)
235 deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
236 wrote = SSL_write (ssl, svm_fifo_head (f), deq_now);
240 if (wrote == deq_now)
242 c = svm_fifo_head_chunk (f);
246 deq_now = clib_min (c->length, len - wrote);
247 rv = SSL_write (ssl, c->data, deq_now);
248 wrote += rv > 0 ? rv : 0;
255 svm_fifo_dequeue_drop (f, wrote);
261 openssl_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
266 f = tls_session->rx_fifo;
267 deq_max = svm_fifo_max_dequeue_cons (f);
271 return openssl_write_from_fifo_into_bio (f, oc->wbio, deq_max);
275 openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
279 if (BIO_ctrl_pending (oc->rbio) <= 0)
282 read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio);
284 tls_add_vpp_q_tx_evt (tls_session);
289 #ifdef HAVE_OPENSSL_ASYNC
291 openssl_check_async_status (tls_ctx_t * ctx, openssl_resume_handler * handler,
294 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
297 SSL_get_async_status (oc->ssl, &estatus);
298 if (estatus == ASYNC_STATUS_EAGAIN)
300 vpp_tls_async_update_event (ctx, 1);
304 vpp_tls_async_update_event (ctx, 0);
314 openssl_handle_handshake_failure (tls_ctx_t * ctx)
316 session_t *app_session;
318 if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
321 * Cleanup pre-allocated app session and close transport
324 session_get_if_valid (ctx->c_s_index, ctx->c_thread_index);
327 session_free (app_session);
328 ctx->no_app_session = 1;
329 ctx->c_s_index = SESSION_INVALID_INDEX;
330 tls_disconnect_transport (ctx);
336 * Also handles cleanup of the pre-allocated session
338 tls_notify_app_connected (ctx, /* is failed */ 1);
343 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
345 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
348 while (SSL_in_init (oc->ssl))
354 else if (!openssl_try_handshake_read (oc, tls_session))
357 rv = SSL_do_handshake (oc->ssl);
358 err = SSL_get_error (oc->ssl, rv);
360 #ifdef HAVE_OPENSSL_ASYNC
361 if (err == SSL_ERROR_WANT_ASYNC)
363 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
367 if (err == SSL_ERROR_SSL)
370 ERR_error_string (ERR_get_error (), buf);
371 clib_warning ("Err: %s", buf);
373 openssl_handle_handshake_failure (ctx);
377 openssl_try_handshake_write (oc, tls_session);
379 if (err != SSL_ERROR_WANT_WRITE)
382 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
383 SSL_state_string_long (oc->ssl));
385 if (SSL_in_init (oc->ssl))
391 if (!SSL_is_server (oc->ssl))
394 * Verify server certificate
396 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
398 TLS_DBG (1, " failed verify: %s\n",
399 X509_verify_cert_error_string (rv));
402 * Presence of hostname enforces strict certificate verification
404 if (ctx->srv_hostname)
406 tls_notify_app_connected (ctx, /* is failed */ 0);
410 tls_notify_app_connected (ctx, /* is failed */ 0);
414 /* Need to check transport status */
415 if (ctx->is_passive_close)
416 openssl_handle_handshake_failure (ctx);
418 tls_notify_app_accept (ctx);
421 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
422 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
427 openssl_confirm_app_close (tls_ctx_t * ctx)
429 tls_disconnect_transport (ctx);
430 session_transport_closed_notify (&ctx->connection);
434 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session)
436 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
437 int wrote = 0, read, max_buf = 100 * TLS_CHUNK_SIZE, max_space;
438 u32 deq_max, to_write;
439 session_t *tls_session;
442 f = app_session->tx_fifo;
444 deq_max = svm_fifo_max_dequeue_cons (f);
448 /* Figure out how much data to write */
449 max_space = max_buf - BIO_ctrl_pending (oc->rbio);
450 max_space = (max_space < 0) ? 0 : max_space;
451 to_write = clib_min (deq_max, (u32) max_space);
453 wrote = openssl_write_from_fifo_into_ssl (f, oc->ssl, to_write);
456 tls_add_vpp_q_builtin_tx_evt (app_session);
460 if (svm_fifo_needs_deq_ntf (f, wrote))
461 session_dequeue_notify (app_session);
463 if (svm_fifo_max_dequeue_cons (f))
464 tls_add_vpp_q_builtin_tx_evt (app_session);
468 if (BIO_ctrl_pending (oc->rbio) <= 0)
471 tls_session = session_get_from_handle (ctx->tls_session_handle);
473 read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio);
476 tls_add_vpp_q_builtin_tx_evt (app_session);
480 tls_add_vpp_q_tx_evt (tls_session);
482 if (BIO_ctrl_pending (oc->rbio) > 0)
483 tls_add_vpp_q_builtin_tx_evt (app_session);
484 else if (ctx->app_closed)
485 openssl_confirm_app_close (ctx);
491 openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
493 int read, wrote = 0, max_space, max_buf = 100 * TLS_CHUNK_SIZE;
494 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
495 u32 deq_max, to_write;
496 session_t *app_session;
499 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
501 if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
507 f = tls_session->rx_fifo;
509 deq_max = svm_fifo_max_dequeue_cons (f);
510 max_space = max_buf - BIO_ctrl_pending (oc->wbio);
511 max_space = max_space < 0 ? 0 : max_space;
512 to_write = clib_min (deq_max, max_space);
516 wrote = openssl_write_from_fifo_into_bio (f, oc->wbio, to_write);
519 tls_add_vpp_q_builtin_rx_evt (tls_session);
523 if (svm_fifo_max_dequeue_cons (f))
524 tls_add_vpp_q_builtin_rx_evt (tls_session);
528 if (BIO_ctrl_pending (oc->wbio) <= 0)
531 app_session = session_get_from_handle (ctx->app_session_handle);
532 f = app_session->rx_fifo;
534 read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
537 tls_add_vpp_q_builtin_rx_evt (tls_session);
541 /* If handshake just completed, session may still be in accepting state */
542 if (app_session->session_state >= SESSION_STATE_READY)
543 tls_notify_app_enqueue (ctx, app_session);
544 if (SSL_pending (oc->ssl) > 0)
545 tls_add_vpp_q_builtin_rx_evt (tls_session);
551 openssl_ctx_init_client (tls_ctx_t * ctx)
553 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
554 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
555 openssl_main_t *om = &openssl_main;
556 session_t *tls_session;
557 const SSL_METHOD *method;
560 method = SSLv23_client_method ();
563 TLS_DBG (1, "SSLv23_method returned null");
567 oc->ssl_ctx = SSL_CTX_new (method);
568 if (oc->ssl_ctx == NULL)
570 TLS_DBG (1, "SSL_CTX_new returned null");
574 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
575 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
576 #ifdef HAVE_OPENSSL_ASYNC
578 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
580 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
583 TLS_DBG (1, "Couldn't set cipher");
587 SSL_CTX_set_options (oc->ssl_ctx, flags);
588 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
590 oc->ssl = SSL_new (oc->ssl_ctx);
593 TLS_DBG (1, "Couldn't initialize ssl struct");
597 oc->rbio = BIO_new (BIO_s_mem ());
598 oc->wbio = BIO_new (BIO_s_mem ());
600 BIO_set_mem_eof_return (oc->rbio, -1);
601 BIO_set_mem_eof_return (oc->wbio, -1);
603 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
604 SSL_set_connect_state (oc->ssl);
606 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
609 TLS_DBG (1, "Couldn't set hostname");
614 * 2. Do the first steps in the handshake.
616 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
617 oc->openssl_ctx_index);
619 tls_session = session_get_from_handle (ctx->tls_session_handle);
621 #ifdef HAVE_OPENSSL_ASYNC
622 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
626 rv = SSL_do_handshake (oc->ssl);
627 err = SSL_get_error (oc->ssl, rv);
628 openssl_try_handshake_write (oc, tls_session);
629 #ifdef HAVE_OPENSSL_ASYNC
630 if (err == SSL_ERROR_WANT_ASYNC)
632 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
637 if (err != SSL_ERROR_WANT_WRITE)
641 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
642 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
647 openssl_start_listen (tls_ctx_t * lctx)
649 const SSL_METHOD *method;
656 openssl_listen_ctx_t *olc;
657 app_cert_key_pair_t *ckpair;
659 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
660 openssl_main_t *om = &openssl_main;
662 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
666 if (!ckpair->cert || !ckpair->key)
668 TLS_DBG (1, "tls cert and/or key not configured %d",
669 lctx->parent_app_wrk_index);
673 method = SSLv23_method ();
674 ssl_ctx = SSL_CTX_new (method);
677 clib_warning ("Unable to create SSL context");
681 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
682 #ifdef HAVE_OPENSSL_ASYNC
685 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
686 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
689 SSL_CTX_set_options (ssl_ctx, flags);
690 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
692 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
695 TLS_DBG (1, "Couldn't set cipher");
700 * Set the key and cert
702 cert_bio = BIO_new (BIO_s_mem ());
703 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
704 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
707 clib_warning ("unable to parse certificate");
710 SSL_CTX_use_certificate (ssl_ctx, srvcert);
713 cert_bio = BIO_new (BIO_s_mem ());
714 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
715 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
718 clib_warning ("unable to parse pkey");
721 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
724 olc_index = openssl_listen_ctx_alloc ();
725 olc = openssl_lctx_get (olc_index);
726 olc->ssl_ctx = ssl_ctx;
727 olc->srvcert = srvcert;
730 /* store SSL_CTX into TLS level structure */
731 lctx->tls_ssl_ctx = olc_index;
738 openssl_stop_listen (tls_ctx_t * lctx)
741 openssl_listen_ctx_t *olc;
743 olc_index = lctx->tls_ssl_ctx;
744 olc = openssl_lctx_get (olc_index);
746 X509_free (olc->srvcert);
747 EVP_PKEY_free (olc->pkey);
749 SSL_CTX_free (olc->ssl_ctx);
750 openssl_listen_ctx_free (olc);
756 openssl_ctx_init_server (tls_ctx_t * ctx)
758 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
759 u32 olc_index = ctx->tls_ssl_ctx;
760 openssl_listen_ctx_t *olc;
761 session_t *tls_session;
764 /* Start a new connection */
766 olc = openssl_lctx_get (olc_index);
767 oc->ssl = SSL_new (olc->ssl_ctx);
770 TLS_DBG (1, "Couldn't initialize ssl struct");
774 oc->rbio = BIO_new (BIO_s_mem ());
775 oc->wbio = BIO_new (BIO_s_mem ());
777 BIO_set_mem_eof_return (oc->rbio, -1);
778 BIO_set_mem_eof_return (oc->wbio, -1);
780 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
781 SSL_set_accept_state (oc->ssl);
783 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
784 oc->openssl_ctx_index);
786 tls_session = session_get_from_handle (ctx->tls_session_handle);
787 #ifdef HAVE_OPENSSL_ASYNC
788 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
792 rv = SSL_do_handshake (oc->ssl);
793 err = SSL_get_error (oc->ssl, rv);
794 openssl_try_handshake_write (oc, tls_session);
795 #ifdef HAVE_OPENSSL_ASYNC
796 if (err == SSL_ERROR_WANT_ASYNC)
798 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
803 if (err != SSL_ERROR_WANT_WRITE)
807 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
808 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
813 openssl_handshake_is_over (tls_ctx_t * ctx)
815 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
818 return SSL_is_init_finished (mc->ssl);
822 openssl_transport_close (tls_ctx_t * ctx)
824 #ifdef HAVE_OPENSSL_ASYNC
825 if (vpp_openssl_is_inflight (ctx))
829 if (!openssl_handshake_is_over (ctx))
831 openssl_handle_handshake_failure (ctx);
834 session_transport_closing_notify (&ctx->connection);
839 openssl_app_close (tls_ctx_t * ctx)
841 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
842 session_t *app_session;
844 /* Wait for all data to be written to tcp */
845 app_session = session_get_from_handle (ctx->app_session_handle);
846 if (BIO_ctrl_pending (oc->rbio) <= 0
847 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
848 openssl_confirm_app_close (ctx);
854 const static tls_engine_vft_t openssl_engine = {
855 .ctx_alloc = openssl_ctx_alloc,
856 .ctx_free = openssl_ctx_free,
857 .ctx_get = openssl_ctx_get,
858 .ctx_get_w_thread = openssl_ctx_get_w_thread,
859 .ctx_init_server = openssl_ctx_init_server,
860 .ctx_init_client = openssl_ctx_init_client,
861 .ctx_write = openssl_ctx_write,
862 .ctx_read = openssl_ctx_read,
863 .ctx_handshake_is_over = openssl_handshake_is_over,
864 .ctx_start_listen = openssl_start_listen,
865 .ctx_stop_listen = openssl_stop_listen,
866 .ctx_transport_close = openssl_transport_close,
867 .ctx_app_close = openssl_app_close,
871 tls_init_ca_chain (void)
873 openssl_main_t *om = &openssl_main;
874 tls_main_t *tm = vnet_tls_get_main ();
879 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
881 clib_warning ("Could not initialize TLS CA certificates");
885 if (!(om->cert_store = X509_STORE_new ()))
887 clib_warning ("failed to create cert store");
891 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
892 rv = X509_STORE_load_file (om->cert_store, tm->ca_cert_path);
894 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
899 clib_warning ("failed to load ca certificate");
902 if (tm->use_test_cert_in_ca)
904 cert_bio = BIO_new (BIO_s_mem ());
905 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
906 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
909 clib_warning ("unable to parse certificate");
912 X509_STORE_add_cert (om->cert_store, testcert);
915 return (rv < 0 ? -1 : 0);
919 tls_openssl_set_ciphers (char *ciphers)
921 openssl_main_t *om = &openssl_main;
929 vec_validate (om->ciphers, strlen (ciphers) - 1);
930 for (i = 0; i < vec_len (om->ciphers); i++)
932 om->ciphers[i] = toupper (ciphers[i]);
939 static clib_error_t *
940 tls_openssl_init (vlib_main_t * vm)
942 vlib_thread_main_t *vtm = vlib_get_thread_main ();
943 openssl_main_t *om = &openssl_main;
944 clib_error_t *error = 0;
947 error = tls_openssl_api_init (vm);
948 num_threads = 1 /* main thread */ + vtm->n_threads;
951 SSL_load_error_strings ();
953 if (tls_init_ca_chain ())
955 clib_warning ("failed to initialize TLS CA chain");
959 vec_validate (om->ctx_pool, num_threads - 1);
961 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
965 /* default ciphers */
966 tls_openssl_set_ciphers
967 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
972 VLIB_INIT_FUNCTION (tls_openssl_init) =
974 .runs_after = VLIB_INITS("tls_init"),
978 #ifdef HAVE_OPENSSL_ASYNC
979 static clib_error_t *
980 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
981 vlib_cli_command_t * cmd)
983 openssl_main_t *om = &openssl_main;
984 char *engine_name = NULL;
985 char *engine_alg = NULL;
986 char *ciphers = NULL;
987 u8 engine_name_set = 0;
990 /* By present, it is not allowed to configure engine again after running */
993 clib_warning ("engine has started!\n");
994 return clib_error_return
995 (0, "engine has started, and no config is accepted");
998 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1000 if (unformat (input, "engine %s", &engine_name))
1002 engine_name_set = 1;
1004 else if (unformat (input, "async"))
1008 else if (unformat (input, "alg %s", &engine_alg))
1010 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
1011 engine_alg[i] = toupper (engine_alg[i]);
1013 else if (unformat (input, "ciphers %s", &ciphers))
1015 tls_openssl_set_ciphers (ciphers);
1018 return clib_error_return (0, "failed: unknown input `%U'",
1019 format_unformat_error, input);
1022 /* reset parameters if engine is not configured */
1023 if (!engine_name_set)
1025 clib_warning ("No engine provided! \n");
1030 vnet_session_enable_disable (vm, 1);
1031 if (openssl_engine_register (engine_name, engine_alg, async) < 0)
1033 return clib_error_return (0, "Failed to register %s polling",
1038 vlib_cli_output (vm, "Successfully register engine %s\n",
1048 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
1050 .path = "tls openssl set",
1051 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
1052 .function = tls_openssl_set_command_fn,
1058 VLIB_PLUGIN_REGISTER () = {
1059 .version = VPP_BUILD_VER,
1060 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
1065 * fd.io coding-style-patch-verification: ON
1068 * eval: (c-set-style "gnu")