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_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
115 u32 deq_max, deq_now;
119 f = tls_session->rx_fifo;
120 deq_max = svm_fifo_max_dequeue_cons (f);
124 deq_now = clib_min (svm_fifo_max_read_chunk (f), deq_max);
125 wrote = BIO_write (oc->wbio, svm_fifo_head (f), deq_now);
129 svm_fifo_dequeue_drop (f, wrote);
132 deq_now = clib_min (svm_fifo_max_read_chunk (f), deq_max - wrote);
133 rv = BIO_write (oc->wbio, svm_fifo_head (f), deq_now);
136 svm_fifo_dequeue_drop (f, rv);
144 openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
146 u32 enq_max, deq_now;
150 if (BIO_ctrl_pending (oc->rbio) <= 0)
153 f = tls_session->tx_fifo;
154 enq_max = svm_fifo_max_enqueue_prod (f);
158 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
159 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
163 svm_fifo_enqueue_nocopy (f, read);
164 tls_add_vpp_q_tx_evt (tls_session);
168 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
169 rv = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
172 svm_fifo_enqueue_nocopy (f, rv);
180 #ifdef HAVE_OPENSSL_ASYNC
182 openssl_check_async_status (tls_ctx_t * ctx, openssl_resume_handler * handler,
185 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
188 SSL_get_async_status (oc->ssl, &estatus);
189 if (estatus == ASYNC_STATUS_EAGAIN)
191 vpp_tls_async_update_event (ctx, 1);
195 vpp_tls_async_update_event (ctx, 0);
205 openssl_handle_handshake_failure (tls_ctx_t * ctx)
207 session_t *app_session;
209 if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
212 * Cleanup pre-allocated app session and close transport
215 session_get_if_valid (ctx->c_s_index, ctx->c_thread_index);
218 session_free (app_session);
219 ctx->no_app_session = 1;
220 ctx->c_s_index = SESSION_INVALID_INDEX;
221 tls_disconnect_transport (ctx);
227 * Also handles cleanup of the pre-allocated session
229 tls_notify_app_connected (ctx, /* is failed */ 1);
234 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
236 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
239 while (SSL_in_init (oc->ssl))
245 else if (!openssl_try_handshake_read (oc, tls_session))
248 rv = SSL_do_handshake (oc->ssl);
249 err = SSL_get_error (oc->ssl, rv);
251 #ifdef HAVE_OPENSSL_ASYNC
252 if (err == SSL_ERROR_WANT_ASYNC)
254 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
258 if (err == SSL_ERROR_SSL)
261 ERR_error_string (ERR_get_error (), buf);
262 clib_warning ("Err: %s", buf);
264 openssl_handle_handshake_failure (ctx);
268 openssl_try_handshake_write (oc, tls_session);
270 if (err != SSL_ERROR_WANT_WRITE)
273 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
274 SSL_state_string_long (oc->ssl));
276 if (SSL_in_init (oc->ssl))
282 if (!SSL_is_server (oc->ssl))
285 * Verify server certificate
287 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
289 TLS_DBG (1, " failed verify: %s\n",
290 X509_verify_cert_error_string (rv));
293 * Presence of hostname enforces strict certificate verification
295 if (ctx->srv_hostname)
297 tls_notify_app_connected (ctx, /* is failed */ 0);
301 tls_notify_app_connected (ctx, /* is failed */ 0);
305 /* Need to check transport status */
306 if (ctx->is_passive_close)
307 openssl_handle_handshake_failure (ctx);
309 tls_notify_app_accept (ctx);
312 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
313 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
318 openssl_confirm_app_close (tls_ctx_t * ctx)
320 tls_disconnect_transport (ctx);
321 session_transport_closed_notify (&ctx->connection);
325 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session)
327 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
328 int wrote = 0, rv, read, max_buf = 100 * TLS_CHUNK_SIZE, max_space;
329 u32 enq_max, deq_max, deq_now, to_write;
330 session_t *tls_session;
333 f = app_session->tx_fifo;
334 deq_max = svm_fifo_max_dequeue_cons (f);
338 max_space = max_buf - BIO_ctrl_pending (oc->rbio);
339 max_space = (max_space < 0) ? 0 : max_space;
340 deq_now = clib_min (deq_max, (u32) max_space);
341 to_write = clib_min (svm_fifo_max_read_chunk (f), deq_now);
342 wrote = SSL_write (oc->ssl, svm_fifo_head (f), to_write);
345 tls_add_vpp_q_builtin_tx_evt (app_session);
348 svm_fifo_dequeue_drop (app_session->tx_fifo, wrote);
351 to_write = clib_min (svm_fifo_max_read_chunk (f), deq_now - wrote);
352 rv = SSL_write (oc->ssl, svm_fifo_head (f), to_write);
355 svm_fifo_dequeue_drop (app_session->tx_fifo, rv);
360 if (svm_fifo_needs_deq_ntf (app_session->tx_fifo, wrote))
361 session_dequeue_notify (app_session);
364 tls_add_vpp_q_builtin_tx_evt (app_session);
368 if (BIO_ctrl_pending (oc->rbio) <= 0)
371 tls_session = session_get_from_handle (ctx->tls_session_handle);
372 f = tls_session->tx_fifo;
373 enq_max = svm_fifo_max_enqueue_prod (f);
376 tls_add_vpp_q_builtin_tx_evt (app_session);
380 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
381 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
384 tls_add_vpp_q_builtin_tx_evt (app_session);
388 svm_fifo_enqueue_nocopy (f, read);
389 tls_add_vpp_q_tx_evt (tls_session);
391 if (read < enq_max && BIO_ctrl_pending (oc->rbio) > 0)
393 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
394 read = BIO_read (oc->rbio, svm_fifo_tail (f), deq_now);
396 svm_fifo_enqueue_nocopy (f, read);
399 if (BIO_ctrl_pending (oc->rbio) > 0)
400 tls_add_vpp_q_builtin_tx_evt (app_session);
401 else if (ctx->app_closed)
402 openssl_confirm_app_close (ctx);
408 openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
410 int read, wrote = 0, max_space, max_buf = 100 * TLS_CHUNK_SIZE, rv;
411 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
412 u32 deq_max, enq_max, deq_now, to_read;
413 session_t *app_session;
416 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
418 if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
424 f = tls_session->rx_fifo;
425 deq_max = svm_fifo_max_dequeue_cons (f);
426 max_space = max_buf - BIO_ctrl_pending (oc->wbio);
427 max_space = max_space < 0 ? 0 : max_space;
428 deq_now = clib_min (deq_max, max_space);
432 to_read = clib_min (svm_fifo_max_read_chunk (f), deq_now);
433 wrote = BIO_write (oc->wbio, svm_fifo_head (f), to_read);
436 tls_add_vpp_q_builtin_rx_evt (tls_session);
439 svm_fifo_dequeue_drop (f, wrote);
442 to_read = clib_min (svm_fifo_max_read_chunk (f), deq_now - wrote);
443 rv = BIO_write (oc->wbio, svm_fifo_head (f), to_read);
446 svm_fifo_dequeue_drop (f, rv);
450 if (svm_fifo_max_dequeue_cons (f))
451 tls_add_vpp_q_builtin_rx_evt (tls_session);
455 if (BIO_ctrl_pending (oc->wbio) <= 0)
458 app_session = session_get_from_handle (ctx->app_session_handle);
459 f = app_session->rx_fifo;
460 enq_max = svm_fifo_max_enqueue_prod (f);
463 tls_add_vpp_q_builtin_rx_evt (tls_session);
467 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
468 read = SSL_read (oc->ssl, svm_fifo_tail (f), deq_now);
471 tls_add_vpp_q_builtin_rx_evt (tls_session);
474 svm_fifo_enqueue_nocopy (f, read);
475 if (read < enq_max && SSL_pending (oc->ssl) > 0)
477 deq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max - read);
478 read = SSL_read (oc->ssl, svm_fifo_tail (f), deq_now);
480 svm_fifo_enqueue_nocopy (f, read);
483 /* If handshake just completed, session may still be in accepting state */
484 if (app_session->session_state >= SESSION_STATE_READY)
485 tls_notify_app_enqueue (ctx, app_session);
486 if (SSL_pending (oc->ssl) > 0)
487 tls_add_vpp_q_builtin_rx_evt (tls_session);
493 openssl_ctx_init_client (tls_ctx_t * ctx)
495 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
496 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
497 openssl_main_t *om = &openssl_main;
498 session_t *tls_session;
499 const SSL_METHOD *method;
502 method = SSLv23_client_method ();
505 TLS_DBG (1, "SSLv23_method returned null");
509 oc->ssl_ctx = SSL_CTX_new (method);
510 if (oc->ssl_ctx == NULL)
512 TLS_DBG (1, "SSL_CTX_new returned null");
516 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
517 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
518 #ifdef HAVE_OPENSSL_ASYNC
520 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
522 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
525 TLS_DBG (1, "Couldn't set cipher");
529 SSL_CTX_set_options (oc->ssl_ctx, flags);
530 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
532 oc->ssl = SSL_new (oc->ssl_ctx);
535 TLS_DBG (1, "Couldn't initialize ssl struct");
539 oc->rbio = BIO_new (BIO_s_mem ());
540 oc->wbio = BIO_new (BIO_s_mem ());
542 BIO_set_mem_eof_return (oc->rbio, -1);
543 BIO_set_mem_eof_return (oc->wbio, -1);
545 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
546 SSL_set_connect_state (oc->ssl);
548 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
551 TLS_DBG (1, "Couldn't set hostname");
556 * 2. Do the first steps in the handshake.
558 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
559 oc->openssl_ctx_index);
561 tls_session = session_get_from_handle (ctx->tls_session_handle);
563 #ifdef HAVE_OPENSSL_ASYNC
564 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
568 rv = SSL_do_handshake (oc->ssl);
569 err = SSL_get_error (oc->ssl, rv);
570 openssl_try_handshake_write (oc, tls_session);
571 #ifdef HAVE_OPENSSL_ASYNC
572 if (err == SSL_ERROR_WANT_ASYNC)
574 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
579 if (err != SSL_ERROR_WANT_WRITE)
583 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
584 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
589 openssl_start_listen (tls_ctx_t * lctx)
591 const SSL_METHOD *method;
598 openssl_listen_ctx_t *olc;
599 app_cert_key_pair_t *ckpair;
601 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
602 openssl_main_t *om = &openssl_main;
604 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
608 if (!ckpair->cert || !ckpair->key)
610 TLS_DBG (1, "tls cert and/or key not configured %d",
611 lctx->parent_app_wrk_index);
615 method = SSLv23_method ();
616 ssl_ctx = SSL_CTX_new (method);
619 clib_warning ("Unable to create SSL context");
623 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
624 #ifdef HAVE_OPENSSL_ASYNC
627 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
628 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
631 SSL_CTX_set_options (ssl_ctx, flags);
632 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
634 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
637 TLS_DBG (1, "Couldn't set cipher");
642 * Set the key and cert
644 cert_bio = BIO_new (BIO_s_mem ());
645 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
646 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
649 clib_warning ("unable to parse certificate");
652 SSL_CTX_use_certificate (ssl_ctx, srvcert);
655 cert_bio = BIO_new (BIO_s_mem ());
656 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
657 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
660 clib_warning ("unable to parse pkey");
663 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
666 olc_index = openssl_listen_ctx_alloc ();
667 olc = openssl_lctx_get (olc_index);
668 olc->ssl_ctx = ssl_ctx;
669 olc->srvcert = srvcert;
672 /* store SSL_CTX into TLS level structure */
673 lctx->tls_ssl_ctx = olc_index;
680 openssl_stop_listen (tls_ctx_t * lctx)
683 openssl_listen_ctx_t *olc;
685 olc_index = lctx->tls_ssl_ctx;
686 olc = openssl_lctx_get (olc_index);
688 X509_free (olc->srvcert);
689 EVP_PKEY_free (olc->pkey);
691 SSL_CTX_free (olc->ssl_ctx);
692 openssl_listen_ctx_free (olc);
698 openssl_ctx_init_server (tls_ctx_t * ctx)
700 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
701 u32 olc_index = ctx->tls_ssl_ctx;
702 openssl_listen_ctx_t *olc;
703 session_t *tls_session;
706 /* Start a new connection */
708 olc = openssl_lctx_get (olc_index);
709 oc->ssl = SSL_new (olc->ssl_ctx);
712 TLS_DBG (1, "Couldn't initialize ssl struct");
716 oc->rbio = BIO_new (BIO_s_mem ());
717 oc->wbio = BIO_new (BIO_s_mem ());
719 BIO_set_mem_eof_return (oc->rbio, -1);
720 BIO_set_mem_eof_return (oc->wbio, -1);
722 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
723 SSL_set_accept_state (oc->ssl);
725 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
726 oc->openssl_ctx_index);
728 tls_session = session_get_from_handle (ctx->tls_session_handle);
729 #ifdef HAVE_OPENSSL_ASYNC
730 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
734 rv = SSL_do_handshake (oc->ssl);
735 err = SSL_get_error (oc->ssl, rv);
736 openssl_try_handshake_write (oc, tls_session);
737 #ifdef HAVE_OPENSSL_ASYNC
738 if (err == SSL_ERROR_WANT_ASYNC)
740 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
745 if (err != SSL_ERROR_WANT_WRITE)
749 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
750 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
755 openssl_handshake_is_over (tls_ctx_t * ctx)
757 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
760 return SSL_is_init_finished (mc->ssl);
764 openssl_transport_close (tls_ctx_t * ctx)
766 #ifdef HAVE_OPENSSL_ASYNC
767 if (vpp_openssl_is_inflight (ctx))
771 if (!openssl_handshake_is_over (ctx))
773 openssl_handle_handshake_failure (ctx);
776 session_transport_closing_notify (&ctx->connection);
781 openssl_app_close (tls_ctx_t * ctx)
783 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
784 session_t *app_session;
786 /* Wait for all data to be written to tcp */
787 app_session = session_get_from_handle (ctx->app_session_handle);
788 if (BIO_ctrl_pending (oc->rbio) <= 0
789 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
790 openssl_confirm_app_close (ctx);
796 const static tls_engine_vft_t openssl_engine = {
797 .ctx_alloc = openssl_ctx_alloc,
798 .ctx_free = openssl_ctx_free,
799 .ctx_get = openssl_ctx_get,
800 .ctx_get_w_thread = openssl_ctx_get_w_thread,
801 .ctx_init_server = openssl_ctx_init_server,
802 .ctx_init_client = openssl_ctx_init_client,
803 .ctx_write = openssl_ctx_write,
804 .ctx_read = openssl_ctx_read,
805 .ctx_handshake_is_over = openssl_handshake_is_over,
806 .ctx_start_listen = openssl_start_listen,
807 .ctx_stop_listen = openssl_stop_listen,
808 .ctx_transport_close = openssl_transport_close,
809 .ctx_app_close = openssl_app_close,
813 tls_init_ca_chain (void)
815 openssl_main_t *om = &openssl_main;
816 tls_main_t *tm = vnet_tls_get_main ();
821 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
823 clib_warning ("Could not initialize TLS CA certificates");
827 if (!(om->cert_store = X509_STORE_new ()))
829 clib_warning ("failed to create cert store");
833 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
834 rv = X509_STORE_load_file (om->cert_store, tm->ca_cert_path);
836 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
841 clib_warning ("failed to load ca certificate");
844 if (tm->use_test_cert_in_ca)
846 cert_bio = BIO_new (BIO_s_mem ());
847 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
848 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
851 clib_warning ("unable to parse certificate");
854 X509_STORE_add_cert (om->cert_store, testcert);
857 return (rv < 0 ? -1 : 0);
861 tls_openssl_set_ciphers (char *ciphers)
863 openssl_main_t *om = &openssl_main;
871 vec_validate (om->ciphers, strlen (ciphers) - 1);
872 for (i = 0; i < vec_len (om->ciphers); i++)
874 om->ciphers[i] = toupper (ciphers[i]);
881 static clib_error_t *
882 tls_openssl_init (vlib_main_t * vm)
884 vlib_thread_main_t *vtm = vlib_get_thread_main ();
885 openssl_main_t *om = &openssl_main;
886 clib_error_t *error = 0;
889 error = tls_openssl_api_init (vm);
890 num_threads = 1 /* main thread */ + vtm->n_threads;
893 SSL_load_error_strings ();
895 if (tls_init_ca_chain ())
897 clib_warning ("failed to initialize TLS CA chain");
901 vec_validate (om->ctx_pool, num_threads - 1);
903 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
907 /* default ciphers */
908 tls_openssl_set_ciphers
909 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
914 VLIB_INIT_FUNCTION (tls_openssl_init) =
916 .runs_after = VLIB_INITS("tls_init"),
920 #ifdef HAVE_OPENSSL_ASYNC
921 static clib_error_t *
922 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
923 vlib_cli_command_t * cmd)
925 openssl_main_t *om = &openssl_main;
926 char *engine_name = NULL;
927 char *engine_alg = NULL;
928 char *ciphers = NULL;
929 u8 engine_name_set = 0;
932 /* By present, it is not allowed to configure engine again after running */
935 clib_warning ("engine has started!\n");
936 return clib_error_return
937 (0, "engine has started, and no config is accepted");
940 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
942 if (unformat (input, "engine %s", &engine_name))
946 else if (unformat (input, "async"))
950 else if (unformat (input, "alg %s", &engine_alg))
952 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
953 engine_alg[i] = toupper (engine_alg[i]);
955 else if (unformat (input, "ciphers %s", &ciphers))
957 tls_openssl_set_ciphers (ciphers);
960 return clib_error_return (0, "failed: unknown input `%U'",
961 format_unformat_error, input);
964 /* reset parameters if engine is not configured */
965 if (!engine_name_set)
967 clib_warning ("No engine provided! \n");
972 vnet_session_enable_disable (vm, 1);
973 if (openssl_engine_register (engine_name, engine_alg, async) < 0)
975 return clib_error_return (0, "Failed to register %s polling",
980 vlib_cli_output (vm, "Successfully register engine %s\n",
990 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
992 .path = "tls openssl set",
993 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
994 .function = tls_openssl_set_command_fn,
1000 VLIB_PLUGIN_REGISTER () = {
1001 .version = VPP_BUILD_VER,
1002 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
1007 * fd.io coding-style-patch-verification: ON
1010 * eval: (c-set-style "gnu")