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, u32 enq_max)
119 svm_fifo_fill_chunk_list (f);
121 enq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
125 read = BIO_read (bio, svm_fifo_tail (f), enq_now);
129 c = svm_fifo_tail_chunk (f);
130 while ((c = c->next) && read < enq_max)
132 enq_now = clib_min (c->length, enq_max - read);
133 rv = BIO_read (bio, c->data, enq_now);
134 read += rv > 0 ? rv : 0;
140 svm_fifo_enqueue_nocopy (f, read);
146 openssl_read_from_ssl_into_fifo (svm_fifo_t * f, SSL * ssl)
148 u32 enq_now, enq_max;
152 enq_max = svm_fifo_max_enqueue_prod (f);
156 svm_fifo_fill_chunk_list (f);
158 enq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
162 read = SSL_read (ssl, svm_fifo_tail (f), enq_now);
166 c = svm_fifo_tail_chunk (f);
167 while ((c = c->next) && read < enq_max)
169 enq_now = clib_min (c->length, enq_max - read);
170 rv = SSL_read (ssl, c->data, enq_now);
171 read += rv > 0 ? rv : 0;
177 svm_fifo_enqueue_nocopy (f, read);
183 openssl_write_from_fifo_into_bio (svm_fifo_t * f, BIO * bio, u32 len)
189 deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
190 wrote = BIO_write (bio, svm_fifo_head (f), deq_now);
194 c = svm_fifo_head_chunk (f);
195 while ((c = c->next) && wrote < len)
197 deq_now = clib_min (c->length, len - wrote);
198 rv = BIO_write (bio, c->data, deq_now);
199 wrote += rv > 0 ? rv : 0;
205 svm_fifo_dequeue_drop (f, wrote);
211 openssl_write_from_fifo_into_ssl (svm_fifo_t * f, SSL * ssl, u32 len)
217 deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
218 wrote = SSL_write (ssl, svm_fifo_head (f), deq_now);
222 c = svm_fifo_head_chunk (f);
223 while ((c = c->next) && wrote < len)
225 deq_now = clib_min (c->length, len - wrote);
226 rv = SSL_write (ssl, c->data, deq_now);
227 wrote += rv > 0 ? rv : 0;
233 svm_fifo_dequeue_drop (f, wrote);
239 openssl_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
244 f = tls_session->rx_fifo;
245 deq_max = svm_fifo_max_dequeue_cons (f);
249 return openssl_write_from_fifo_into_bio (f, oc->wbio, deq_max);
253 openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
257 if (BIO_ctrl_pending (oc->rbio) <= 0)
260 enq_max = svm_fifo_max_enqueue_prod (tls_session->tx_fifo);
264 read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio,
267 tls_add_vpp_q_tx_evt (tls_session);
272 #ifdef HAVE_OPENSSL_ASYNC
274 openssl_check_async_status (tls_ctx_t * ctx, openssl_resume_handler * handler,
277 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
280 SSL_get_async_status (oc->ssl, &estatus);
281 if (estatus == ASYNC_STATUS_EAGAIN)
283 vpp_tls_async_update_event (ctx, 1);
287 vpp_tls_async_update_event (ctx, 0);
297 openssl_handle_handshake_failure (tls_ctx_t * ctx)
299 session_t *app_session;
301 if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
304 * Cleanup pre-allocated app session and close transport
307 session_get_if_valid (ctx->c_s_index, ctx->c_thread_index);
310 session_free (app_session);
311 ctx->no_app_session = 1;
312 ctx->c_s_index = SESSION_INVALID_INDEX;
313 tls_disconnect_transport (ctx);
319 * Also handles cleanup of the pre-allocated session
321 tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE);
326 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
328 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
331 while (SSL_in_init (oc->ssl))
337 else if (!openssl_try_handshake_read (oc, tls_session))
340 rv = SSL_do_handshake (oc->ssl);
341 err = SSL_get_error (oc->ssl, rv);
343 #ifdef HAVE_OPENSSL_ASYNC
344 if (err == SSL_ERROR_WANT_ASYNC)
346 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
350 if (err == SSL_ERROR_SSL)
353 ERR_error_string (ERR_get_error (), buf);
354 clib_warning ("Err: %s", buf);
356 openssl_handle_handshake_failure (ctx);
360 openssl_try_handshake_write (oc, tls_session);
362 if (err != SSL_ERROR_WANT_WRITE)
365 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
366 SSL_state_string_long (oc->ssl));
368 if (SSL_in_init (oc->ssl))
374 if (!SSL_is_server (oc->ssl))
377 * Verify server certificate
379 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
381 TLS_DBG (1, " failed verify: %s\n",
382 X509_verify_cert_error_string (rv));
385 * Presence of hostname enforces strict certificate verification
387 if (ctx->srv_hostname)
389 tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE);
393 tls_notify_app_connected (ctx, SESSION_E_NONE);
397 /* Need to check transport status */
398 if (ctx->is_passive_close)
399 openssl_handle_handshake_failure (ctx);
401 tls_notify_app_accept (ctx);
404 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
405 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
410 openssl_confirm_app_close (tls_ctx_t * ctx)
412 tls_disconnect_transport (ctx);
413 session_transport_closed_notify (&ctx->connection);
417 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session,
418 transport_send_params_t * sp)
420 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
421 int wrote = 0, read, max_buf = 4 * TLS_CHUNK_SIZE, max_space, n_pending;
422 u32 deq_max, to_write, enq_max;
423 session_t *tls_session;
426 f = app_session->tx_fifo;
428 deq_max = svm_fifo_max_dequeue_cons (f);
432 deq_max = clib_min (deq_max, sp->max_burst_size);
434 /* Figure out how much data to write */
435 max_space = max_buf - BIO_ctrl_pending (oc->rbio);
436 max_space = (max_space < 0) ? 0 : max_space;
437 to_write = clib_min (deq_max, (u32) max_space);
439 wrote = openssl_write_from_fifo_into_ssl (f, oc->ssl, to_write);
443 if (svm_fifo_needs_deq_ntf (f, wrote))
444 session_dequeue_notify (app_session);
448 if ((n_pending = BIO_ctrl_pending (oc->rbio)) <= 0)
451 tls_session = session_get_from_handle (ctx->tls_session_handle);
453 enq_max = svm_fifo_max_enqueue_prod (tls_session->tx_fifo);
455 goto maybe_reschedule;
457 read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio,
460 goto maybe_reschedule;
462 tls_add_vpp_q_tx_evt (tls_session);
464 if (PREDICT_FALSE (ctx->app_closed && !BIO_ctrl_pending (oc->rbio)))
465 openssl_confirm_app_close (ctx);
469 if (!svm_fifo_max_enqueue_prod (tls_session->tx_fifo))
471 svm_fifo_add_want_deq_ntf (tls_session->tx_fifo,
472 SVM_FIFO_WANT_DEQ_NOTIF);
473 transport_connection_deschedule (&ctx->connection);
474 sp->flags |= TRANSPORT_SND_F_DESCHED;
477 /* Request tx reschedule of the app session */
478 app_session->flags |= SESSION_F_CUSTOM_TX;
484 openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
486 int read, wrote = 0, max_space, max_buf = 4 * TLS_CHUNK_SIZE;
487 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
488 u32 deq_max, to_write;
489 session_t *app_session;
492 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
494 if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
500 f = tls_session->rx_fifo;
502 deq_max = svm_fifo_max_dequeue_cons (f);
503 max_space = max_buf - BIO_ctrl_pending (oc->wbio);
504 max_space = max_space < 0 ? 0 : max_space;
505 to_write = clib_min (deq_max, max_space);
509 wrote = openssl_write_from_fifo_into_bio (f, oc->wbio, to_write);
512 tls_add_vpp_q_builtin_rx_evt (tls_session);
516 if (svm_fifo_max_dequeue_cons (f))
517 tls_add_vpp_q_builtin_rx_evt (tls_session);
521 if (BIO_ctrl_pending (oc->wbio) <= 0)
524 app_session = session_get_from_handle (ctx->app_session_handle);
525 f = app_session->rx_fifo;
527 read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
530 tls_add_vpp_q_builtin_rx_evt (tls_session);
534 /* If handshake just completed, session may still be in accepting state */
535 if (app_session->session_state >= SESSION_STATE_READY)
536 tls_notify_app_enqueue (ctx, app_session);
537 if (SSL_pending (oc->ssl) > 0)
538 tls_add_vpp_q_builtin_rx_evt (tls_session);
544 openssl_ctx_init_client (tls_ctx_t * ctx)
546 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
547 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
548 openssl_main_t *om = &openssl_main;
549 session_t *tls_session;
550 const SSL_METHOD *method;
553 method = SSLv23_client_method ();
556 TLS_DBG (1, "SSLv23_method returned null");
560 oc->ssl_ctx = SSL_CTX_new (method);
561 if (oc->ssl_ctx == NULL)
563 TLS_DBG (1, "SSL_CTX_new returned null");
567 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
568 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
569 #ifdef HAVE_OPENSSL_ASYNC
571 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
573 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
576 TLS_DBG (1, "Couldn't set cipher");
580 SSL_CTX_set_options (oc->ssl_ctx, flags);
581 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
583 oc->ssl = SSL_new (oc->ssl_ctx);
586 TLS_DBG (1, "Couldn't initialize ssl struct");
590 oc->rbio = BIO_new (BIO_s_mem ());
591 oc->wbio = BIO_new (BIO_s_mem ());
593 BIO_set_mem_eof_return (oc->rbio, -1);
594 BIO_set_mem_eof_return (oc->wbio, -1);
596 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
597 SSL_set_connect_state (oc->ssl);
599 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
602 TLS_DBG (1, "Couldn't set hostname");
607 * 2. Do the first steps in the handshake.
609 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
610 oc->openssl_ctx_index);
612 tls_session = session_get_from_handle (ctx->tls_session_handle);
614 #ifdef HAVE_OPENSSL_ASYNC
615 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
619 rv = SSL_do_handshake (oc->ssl);
620 err = SSL_get_error (oc->ssl, rv);
621 openssl_try_handshake_write (oc, tls_session);
622 #ifdef HAVE_OPENSSL_ASYNC
623 if (err == SSL_ERROR_WANT_ASYNC)
625 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
630 if (err != SSL_ERROR_WANT_WRITE)
634 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
635 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
640 openssl_start_listen (tls_ctx_t * lctx)
642 const SSL_METHOD *method;
649 openssl_listen_ctx_t *olc;
650 app_cert_key_pair_t *ckpair;
652 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
653 openssl_main_t *om = &openssl_main;
655 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
659 if (!ckpair->cert || !ckpair->key)
661 TLS_DBG (1, "tls cert and/or key not configured %d",
662 lctx->parent_app_wrk_index);
666 method = SSLv23_method ();
667 ssl_ctx = SSL_CTX_new (method);
670 clib_warning ("Unable to create SSL context");
674 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
675 #ifdef HAVE_OPENSSL_ASYNC
678 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
679 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
682 SSL_CTX_set_options (ssl_ctx, flags);
683 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
685 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
688 TLS_DBG (1, "Couldn't set cipher");
693 * Set the key and cert
695 cert_bio = BIO_new (BIO_s_mem ());
696 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
697 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
700 clib_warning ("unable to parse certificate");
703 SSL_CTX_use_certificate (ssl_ctx, srvcert);
706 cert_bio = BIO_new (BIO_s_mem ());
707 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
708 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
711 clib_warning ("unable to parse pkey");
714 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
717 olc_index = openssl_listen_ctx_alloc ();
718 olc = openssl_lctx_get (olc_index);
719 olc->ssl_ctx = ssl_ctx;
720 olc->srvcert = srvcert;
723 /* store SSL_CTX into TLS level structure */
724 lctx->tls_ssl_ctx = olc_index;
731 openssl_stop_listen (tls_ctx_t * lctx)
734 openssl_listen_ctx_t *olc;
736 olc_index = lctx->tls_ssl_ctx;
737 olc = openssl_lctx_get (olc_index);
739 X509_free (olc->srvcert);
740 EVP_PKEY_free (olc->pkey);
742 SSL_CTX_free (olc->ssl_ctx);
743 openssl_listen_ctx_free (olc);
749 openssl_ctx_init_server (tls_ctx_t * ctx)
751 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
752 u32 olc_index = ctx->tls_ssl_ctx;
753 openssl_listen_ctx_t *olc;
754 session_t *tls_session;
757 /* Start a new connection */
759 olc = openssl_lctx_get (olc_index);
760 oc->ssl = SSL_new (olc->ssl_ctx);
763 TLS_DBG (1, "Couldn't initialize ssl struct");
767 oc->rbio = BIO_new (BIO_s_mem ());
768 oc->wbio = BIO_new (BIO_s_mem ());
770 BIO_set_mem_eof_return (oc->rbio, -1);
771 BIO_set_mem_eof_return (oc->wbio, -1);
773 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
774 SSL_set_accept_state (oc->ssl);
776 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
777 oc->openssl_ctx_index);
779 tls_session = session_get_from_handle (ctx->tls_session_handle);
780 #ifdef HAVE_OPENSSL_ASYNC
781 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
785 rv = SSL_do_handshake (oc->ssl);
786 err = SSL_get_error (oc->ssl, rv);
787 openssl_try_handshake_write (oc, tls_session);
788 #ifdef HAVE_OPENSSL_ASYNC
789 if (err == SSL_ERROR_WANT_ASYNC)
791 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
796 if (err != SSL_ERROR_WANT_WRITE)
800 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
801 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
806 openssl_handshake_is_over (tls_ctx_t * ctx)
808 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
811 return SSL_is_init_finished (mc->ssl);
815 openssl_transport_close (tls_ctx_t * ctx)
817 #ifdef HAVE_OPENSSL_ASYNC
818 if (vpp_openssl_is_inflight (ctx))
822 if (!openssl_handshake_is_over (ctx))
824 openssl_handle_handshake_failure (ctx);
827 session_transport_closing_notify (&ctx->connection);
832 openssl_app_close (tls_ctx_t * ctx)
834 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
835 session_t *app_session;
837 /* Wait for all data to be written to tcp */
838 app_session = session_get_from_handle (ctx->app_session_handle);
839 if (BIO_ctrl_pending (oc->rbio) <= 0
840 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
841 openssl_confirm_app_close (ctx);
847 const static tls_engine_vft_t openssl_engine = {
848 .ctx_alloc = openssl_ctx_alloc,
849 .ctx_free = openssl_ctx_free,
850 .ctx_get = openssl_ctx_get,
851 .ctx_get_w_thread = openssl_ctx_get_w_thread,
852 .ctx_init_server = openssl_ctx_init_server,
853 .ctx_init_client = openssl_ctx_init_client,
854 .ctx_write = openssl_ctx_write,
855 .ctx_read = openssl_ctx_read,
856 .ctx_handshake_is_over = openssl_handshake_is_over,
857 .ctx_start_listen = openssl_start_listen,
858 .ctx_stop_listen = openssl_stop_listen,
859 .ctx_transport_close = openssl_transport_close,
860 .ctx_app_close = openssl_app_close,
864 tls_init_ca_chain (void)
866 openssl_main_t *om = &openssl_main;
867 tls_main_t *tm = vnet_tls_get_main ();
872 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
874 clib_warning ("Could not initialize TLS CA certificates");
878 if (!(om->cert_store = X509_STORE_new ()))
880 clib_warning ("failed to create cert store");
884 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
885 rv = X509_STORE_load_file (om->cert_store, tm->ca_cert_path);
887 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
892 clib_warning ("failed to load ca certificate");
895 if (tm->use_test_cert_in_ca)
897 cert_bio = BIO_new (BIO_s_mem ());
898 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
899 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
902 clib_warning ("unable to parse certificate");
905 X509_STORE_add_cert (om->cert_store, testcert);
908 return (rv < 0 ? -1 : 0);
912 tls_openssl_set_ciphers (char *ciphers)
914 openssl_main_t *om = &openssl_main;
922 vec_validate (om->ciphers, strlen (ciphers) - 1);
923 for (i = 0; i < vec_len (om->ciphers); i++)
925 om->ciphers[i] = toupper (ciphers[i]);
932 static clib_error_t *
933 tls_openssl_init (vlib_main_t * vm)
935 vlib_thread_main_t *vtm = vlib_get_thread_main ();
936 openssl_main_t *om = &openssl_main;
937 clib_error_t *error = 0;
940 error = tls_openssl_api_init (vm);
941 num_threads = 1 /* main thread */ + vtm->n_threads;
944 SSL_load_error_strings ();
946 if (tls_init_ca_chain ())
948 clib_warning ("failed to initialize TLS CA chain");
952 vec_validate (om->ctx_pool, num_threads - 1);
954 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
958 /* default ciphers */
959 tls_openssl_set_ciphers
960 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
965 VLIB_INIT_FUNCTION (tls_openssl_init) =
967 .runs_after = VLIB_INITS("tls_init"),
971 #ifdef HAVE_OPENSSL_ASYNC
972 static clib_error_t *
973 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
974 vlib_cli_command_t * cmd)
976 openssl_main_t *om = &openssl_main;
977 char *engine_name = NULL;
978 char *engine_alg = NULL;
979 char *ciphers = NULL;
980 u8 engine_name_set = 0;
983 /* By present, it is not allowed to configure engine again after running */
986 clib_warning ("engine has started!\n");
987 return clib_error_return
988 (0, "engine has started, and no config is accepted");
991 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
993 if (unformat (input, "engine %s", &engine_name))
997 else if (unformat (input, "async"))
1001 else if (unformat (input, "alg %s", &engine_alg))
1003 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
1004 engine_alg[i] = toupper (engine_alg[i]);
1006 else if (unformat (input, "ciphers %s", &ciphers))
1008 tls_openssl_set_ciphers (ciphers);
1011 return clib_error_return (0, "failed: unknown input `%U'",
1012 format_unformat_error, input);
1015 /* reset parameters if engine is not configured */
1016 if (!engine_name_set)
1018 clib_warning ("No engine provided! \n");
1023 vnet_session_enable_disable (vm, 1);
1024 if (openssl_engine_register (engine_name, engine_alg, async) < 0)
1026 return clib_error_return (0, "Failed to register %s polling",
1031 vlib_cli_output (vm, "Successfully register engine %s\n",
1041 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
1043 .path = "tls openssl set",
1044 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
1045 .function = tls_openssl_set_command_fn,
1051 VLIB_PLUGIN_REGISTER () = {
1052 .version = VPP_BUILD_VER,
1053 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
1058 * fd.io coding-style-patch-verification: ON
1061 * eval: (c-set-style "gnu")