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>
29 #include <tlsopenssl/tls_bios.h>
31 #define MAX_CRYPTO_LEN 64
33 openssl_main_t openssl_main;
36 openssl_ctx_alloc_w_thread (u32 thread_index)
38 openssl_main_t *om = &openssl_main;
41 pool_get (om->ctx_pool[thread_index], ctx);
43 *ctx = clib_mem_alloc (sizeof (openssl_ctx_t));
45 clib_memset (*ctx, 0, sizeof (openssl_ctx_t));
46 (*ctx)->ctx.c_thread_index = thread_index;
47 (*ctx)->ctx.tls_ctx_engine = CRYPTO_ENGINE_OPENSSL;
48 (*ctx)->ctx.app_session_handle = SESSION_INVALID_HANDLE;
49 (*ctx)->openssl_ctx_index = ctx - om->ctx_pool[thread_index];
50 return ((*ctx)->openssl_ctx_index);
54 openssl_ctx_alloc (void)
56 return openssl_ctx_alloc_w_thread (vlib_get_thread_index ());
60 openssl_ctx_free (tls_ctx_t * ctx)
62 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
64 if (SSL_is_init_finished (oc->ssl) && !ctx->is_passive_close)
65 SSL_shutdown (oc->ssl);
69 #ifdef HAVE_OPENSSL_ASYNC
70 openssl_evt_free (ctx->evt_index, ctx->c_thread_index);
72 vec_free (ctx->srv_hostname);
73 pool_put_index (openssl_main.ctx_pool[ctx->c_thread_index],
74 oc->openssl_ctx_index);
78 openssl_ctx_detach (tls_ctx_t *ctx)
80 openssl_ctx_t *oc = (openssl_ctx_t *) ctx, *oc_copy;
82 oc_copy = clib_mem_alloc (sizeof (*oc_copy));
83 clib_memcpy (oc_copy, oc, sizeof (*oc));
89 openssl_ctx_attach (u32 thread_index, void *ctx_ptr)
91 openssl_main_t *om = &openssl_main;
95 pool_get (om->ctx_pool[thread_index], oc);
96 /* Free the old instance instead of looking for an empty spot */
101 (*oc)->openssl_ctx_index = oc - om->ctx_pool[thread_index];
102 (*oc)->ctx.c_thread_index = thread_index;
104 sh = (*oc)->ctx.tls_session_handle;
105 BIO_set_data ((*oc)->rbio, uword_to_pointer (sh, void *));
106 BIO_set_data ((*oc)->wbio, uword_to_pointer (sh, void *));
108 return ((*oc)->openssl_ctx_index);
112 openssl_ctx_get (u32 ctx_index)
115 ctx = pool_elt_at_index (openssl_main.ctx_pool[vlib_get_thread_index ()],
121 openssl_ctx_get_w_thread (u32 ctx_index, u8 thread_index)
124 ctx = pool_elt_at_index (openssl_main.ctx_pool[thread_index], ctx_index);
129 openssl_listen_ctx_alloc (void)
131 openssl_main_t *om = &openssl_main;
132 openssl_listen_ctx_t *lctx;
134 pool_get (om->lctx_pool, lctx);
136 clib_memset (lctx, 0, sizeof (openssl_listen_ctx_t));
137 lctx->openssl_lctx_index = lctx - om->lctx_pool;
138 return lctx->openssl_lctx_index;
142 openssl_listen_ctx_free (openssl_listen_ctx_t * lctx)
144 pool_put_index (openssl_main.lctx_pool, lctx->openssl_lctx_index);
147 openssl_listen_ctx_t *
148 openssl_lctx_get (u32 lctx_index)
150 return pool_elt_at_index (openssl_main.lctx_pool, lctx_index);
154 openssl_read_from_ssl_into_fifo (svm_fifo_t * f, SSL * ssl)
156 int read, rv, n_fs, i;
157 const int n_segs = 2;
158 svm_fifo_seg_t fs[n_segs];
161 max_enq = svm_fifo_max_enqueue_prod (f);
165 n_fs = svm_fifo_provision_chunks (f, fs, n_segs, max_enq);
169 /* Return early if we can't read anything */
170 read = SSL_read (ssl, fs[0].data, fs[0].len);
174 for (i = 1; i < n_fs; i++)
176 rv = SSL_read (ssl, fs[i].data, fs[i].len);
177 read += rv > 0 ? rv : 0;
183 svm_fifo_enqueue_nocopy (f, read);
189 openssl_write_from_fifo_into_ssl (svm_fifo_t *f, SSL *ssl, u32 max_len)
191 int wrote = 0, rv, i = 0, len;
192 const int n_segs = 2;
193 svm_fifo_seg_t fs[n_segs];
195 len = svm_fifo_segments (f, 0, fs, n_segs, max_len);
199 while (wrote < len && i < n_segs)
201 rv = SSL_write (ssl, fs[i].data, fs[i].len);
202 wrote += (rv > 0) ? rv : 0;
209 svm_fifo_dequeue_drop (f, wrote);
214 #ifdef HAVE_OPENSSL_ASYNC
216 openssl_check_async_status (tls_ctx_t * ctx, openssl_resume_handler * handler,
219 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
222 SSL_get_async_status (oc->ssl, &estatus);
223 if (estatus == ASYNC_STATUS_EAGAIN)
225 vpp_tls_async_update_event (ctx, 1);
229 vpp_tls_async_update_event (ctx, 0);
239 openssl_handle_handshake_failure (tls_ctx_t * ctx)
241 session_t *app_session;
243 if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
246 * Cleanup pre-allocated app session and close transport
249 session_get_if_valid (ctx->c_s_index, ctx->c_thread_index);
252 session_free (app_session);
253 ctx->no_app_session = 1;
254 ctx->c_s_index = SESSION_INVALID_INDEX;
255 tls_disconnect_transport (ctx);
261 * Also handles cleanup of the pre-allocated session
263 tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE);
268 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
270 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
273 while (SSL_in_init (oc->ssl))
279 else if (!svm_fifo_max_dequeue_cons (tls_session->rx_fifo))
282 rv = SSL_do_handshake (oc->ssl);
283 err = SSL_get_error (oc->ssl, rv);
285 #ifdef HAVE_OPENSSL_ASYNC
286 if (err == SSL_ERROR_WANT_ASYNC)
288 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
292 if (err == SSL_ERROR_SSL)
295 ERR_error_string (ERR_get_error (), buf);
296 clib_warning ("Err: %s", buf);
298 openssl_handle_handshake_failure (ctx);
302 if (err != SSL_ERROR_WANT_WRITE && err != SSL_ERROR_WANT_READ)
305 TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
306 SSL_state_string_long (oc->ssl));
308 if (SSL_in_init (oc->ssl))
314 if (!SSL_is_server (oc->ssl))
317 * Verify server certificate
319 if ((rv = SSL_get_verify_result (oc->ssl)) != X509_V_OK)
321 TLS_DBG (1, " failed verify: %s\n",
322 X509_verify_cert_error_string (rv));
325 * Presence of hostname enforces strict certificate verification
327 if (ctx->srv_hostname)
329 tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE);
333 tls_notify_app_connected (ctx, SESSION_E_NONE);
337 /* Need to check transport status */
338 if (ctx->is_passive_close)
339 openssl_handle_handshake_failure (ctx);
341 tls_notify_app_accept (ctx);
344 TLS_DBG (1, "Handshake for %u complete. TLS cipher is %s",
345 oc->openssl_ctx_index, SSL_get_cipher (oc->ssl));
350 openssl_confirm_app_close (tls_ctx_t * ctx)
352 tls_disconnect_transport (ctx);
353 session_transport_closed_notify (&ctx->connection);
357 openssl_ctx_write_tls (tls_ctx_t *ctx, session_t *app_session,
358 transport_send_params_t *sp)
360 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
361 u32 deq_max, space, enq_buf;
366 ts = session_get_from_handle (ctx->tls_session_handle);
367 space = svm_fifo_max_enqueue_prod (ts->tx_fifo);
368 /* Leave a bit of extra space for tls ctrl data, if any needed */
369 space = clib_max ((int) space - TLSO_CTRL_BYTES, 0);
371 f = app_session->tx_fifo;
373 deq_max = svm_fifo_max_dequeue_cons (f);
374 deq_max = clib_min (deq_max, space);
378 deq_max = clib_min (deq_max, sp->max_burst_size);
380 wrote = openssl_write_from_fifo_into_ssl (f, oc->ssl, deq_max);
384 if (svm_fifo_needs_deq_ntf (f, wrote))
385 session_dequeue_notify (app_session);
389 /* Deschedule and wait for deq notification if fifo is almost full */
390 enq_buf = clib_min (svm_fifo_size (ts->tx_fifo) / 2, TLSO_MIN_ENQ_SPACE);
391 if (space < wrote + enq_buf)
393 svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
394 transport_connection_deschedule (&ctx->connection);
395 sp->flags |= TRANSPORT_SND_F_DESCHED;
398 /* Request tx reschedule of the app session */
399 app_session->flags |= SESSION_F_CUSTOM_TX;
405 openssl_ctx_write_dtls (tls_ctx_t *ctx, session_t *app_session,
406 transport_send_params_t *sp)
408 openssl_main_t *om = &openssl_main;
409 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
410 session_dgram_pre_hdr_t hdr;
413 u32 read = 0, to_deq, dgram_sz;
416 us = session_get_from_handle (ctx->tls_session_handle);
417 to_deq = svm_fifo_max_dequeue_cons (app_session->tx_fifo);
418 buf = om->tx_bufs[ctx->c_thread_index];
422 /* Peeking only pre-header dgram because the session is connected */
423 rv = svm_fifo_peek (app_session->tx_fifo, 0, sizeof (hdr), (u8 *) &hdr);
424 ASSERT (rv == sizeof (hdr) && hdr.data_length < vec_len (buf));
425 ASSERT (to_deq >= hdr.data_length + SESSION_CONN_HDR_LEN);
427 dgram_sz = hdr.data_length + SESSION_CONN_HDR_LEN;
428 if (svm_fifo_max_enqueue_prod (us->tx_fifo) < dgram_sz + TLSO_CTRL_BYTES)
430 svm_fifo_add_want_deq_ntf (us->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
431 transport_connection_deschedule (&ctx->connection);
432 sp->flags |= TRANSPORT_SND_F_DESCHED;
436 rv = svm_fifo_peek (app_session->tx_fifo, SESSION_CONN_HDR_LEN,
437 hdr.data_length, buf);
438 ASSERT (rv == hdr.data_length);
439 svm_fifo_dequeue_drop (app_session->tx_fifo, dgram_sz);
441 wrote = SSL_write (oc->ssl, buf, rv);
450 if (svm_fifo_needs_deq_ntf (app_session->tx_fifo, read))
451 session_dequeue_notify (app_session);
454 tls_add_vpp_q_tx_evt (us);
456 if (PREDICT_FALSE (ctx->app_closed &&
457 !svm_fifo_max_enqueue_prod (us->rx_fifo)))
458 openssl_confirm_app_close (ctx);
464 openssl_ctx_write (tls_ctx_t *ctx, session_t *app_session,
465 transport_send_params_t *sp)
467 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
468 return openssl_ctx_write_tls (ctx, app_session, sp);
470 return openssl_ctx_write_dtls (ctx, app_session, sp);
474 openssl_ctx_read_tls (tls_ctx_t *ctx, session_t *tls_session)
476 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
477 session_t *app_session;
481 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
483 if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
487 app_session = session_get_from_handle (ctx->app_session_handle);
488 f = app_session->rx_fifo;
490 read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
492 /* If handshake just completed, session may still be in accepting state */
493 if (read && app_session->session_state >= SESSION_STATE_READY)
494 tls_notify_app_enqueue (ctx, app_session);
496 if ((SSL_pending (oc->ssl) > 0) ||
497 svm_fifo_max_dequeue_cons (tls_session->rx_fifo))
498 tls_add_vpp_q_builtin_rx_evt (tls_session);
504 openssl_ctx_read_dtls (tls_ctx_t *ctx, session_t *us)
506 openssl_main_t *om = &openssl_main;
507 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
508 session_dgram_hdr_t hdr;
509 session_t *app_session;
514 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
516 u32 us_index = us->session_index;
517 if (openssl_ctx_handshake_rx (ctx, us) < 0)
519 /* Session pool might grow when allocating the app's session */
520 us = session_get (us_index, ctx->c_thread_index);
523 buf = om->rx_bufs[ctx->c_thread_index];
524 app_session = session_get_from_handle (ctx->app_session_handle);
525 svm_fifo_fill_chunk_list (app_session->rx_fifo);
527 while (svm_fifo_max_dequeue_cons (us->rx_fifo) > 0)
529 if (svm_fifo_max_enqueue_prod (app_session->rx_fifo) < DTLSO_MAX_DGRAM)
531 tls_add_vpp_q_builtin_rx_evt (us);
535 read = SSL_read (oc->ssl, buf, vec_len (buf));
536 if (PREDICT_FALSE (read <= 0))
539 tls_add_vpp_q_builtin_rx_evt (us);
544 hdr.data_length = read;
547 svm_fifo_seg_t segs[2] = { { (u8 *) &hdr, sizeof (hdr) },
550 rv = svm_fifo_enqueue_segments (app_session->rx_fifo, segs, 2,
551 0 /* allow partial */);
557 /* If handshake just completed, session may still be in accepting state */
558 if (app_session->session_state >= SESSION_STATE_READY)
559 tls_notify_app_enqueue (ctx, app_session);
565 openssl_ctx_read (tls_ctx_t *ctx, session_t *ts)
567 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
568 return openssl_ctx_read_tls (ctx, ts);
570 return openssl_ctx_read_dtls (ctx, ts);
574 openssl_ctx_init_client (tls_ctx_t * ctx)
576 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
577 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
578 openssl_main_t *om = &openssl_main;
579 const SSL_METHOD *method;
582 method = ctx->tls_type == TRANSPORT_PROTO_TLS ? SSLv23_client_method () :
583 DTLS_client_method ();
586 TLS_DBG (1, "(D)TLS_method returned null");
590 oc->ssl_ctx = SSL_CTX_new (method);
591 if (oc->ssl_ctx == NULL)
593 TLS_DBG (1, "SSL_CTX_new returned null");
597 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
598 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
599 #ifdef HAVE_OPENSSL_ASYNC
601 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
603 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
606 TLS_DBG (1, "Couldn't set cipher");
610 SSL_CTX_set_options (oc->ssl_ctx, flags);
611 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
613 oc->ssl = SSL_new (oc->ssl_ctx);
616 TLS_DBG (1, "Couldn't initialize ssl struct");
620 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
622 oc->rbio = BIO_new_tls (ctx->tls_session_handle);
623 oc->wbio = BIO_new_tls (ctx->tls_session_handle);
627 oc->rbio = BIO_new_dtls (ctx->tls_session_handle);
628 oc->wbio = BIO_new_dtls (ctx->tls_session_handle);
631 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
632 SSL_set_connect_state (oc->ssl);
634 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
637 TLS_DBG (1, "Couldn't set hostname");
642 * 2. Do the first steps in the handshake.
644 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
645 oc->openssl_ctx_index);
647 #ifdef HAVE_OPENSSL_ASYNC
648 session_t *tls_session = session_get_from_handle (ctx->tls_session_handle);
649 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
653 rv = SSL_do_handshake (oc->ssl);
654 err = SSL_get_error (oc->ssl, rv);
655 #ifdef HAVE_OPENSSL_ASYNC
656 if (err == SSL_ERROR_WANT_ASYNC)
658 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
663 if (err != SSL_ERROR_WANT_WRITE)
667 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
668 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
673 openssl_start_listen (tls_ctx_t * lctx)
675 const SSL_METHOD *method;
682 openssl_listen_ctx_t *olc;
683 app_cert_key_pair_t *ckpair;
685 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
686 openssl_main_t *om = &openssl_main;
688 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
692 if (!ckpair->cert || !ckpair->key)
694 TLS_DBG (1, "tls cert and/or key not configured %d",
695 lctx->parent_app_wrk_index);
699 method = lctx->tls_type == TRANSPORT_PROTO_TLS ? SSLv23_server_method () :
700 DTLS_server_method ();
701 ssl_ctx = SSL_CTX_new (method);
704 clib_warning ("Unable to create SSL context");
708 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
709 #ifdef HAVE_OPENSSL_ASYNC
712 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
713 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
716 SSL_CTX_set_options (ssl_ctx, flags);
717 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
719 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
722 TLS_DBG (1, "Couldn't set cipher");
727 * Set the key and cert
729 cert_bio = BIO_new (BIO_s_mem ());
730 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
731 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
734 clib_warning ("unable to parse certificate");
737 SSL_CTX_use_certificate (ssl_ctx, srvcert);
740 cert_bio = BIO_new (BIO_s_mem ());
741 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
742 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
745 clib_warning ("unable to parse pkey");
748 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
751 olc_index = openssl_listen_ctx_alloc ();
752 olc = openssl_lctx_get (olc_index);
753 olc->ssl_ctx = ssl_ctx;
754 olc->srvcert = srvcert;
757 /* store SSL_CTX into TLS level structure */
758 lctx->tls_ssl_ctx = olc_index;
765 openssl_stop_listen (tls_ctx_t * lctx)
768 openssl_listen_ctx_t *olc;
770 olc_index = lctx->tls_ssl_ctx;
771 olc = openssl_lctx_get (olc_index);
773 X509_free (olc->srvcert);
774 EVP_PKEY_free (olc->pkey);
776 SSL_CTX_free (olc->ssl_ctx);
777 openssl_listen_ctx_free (olc);
783 openssl_ctx_init_server (tls_ctx_t * ctx)
785 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
786 u32 olc_index = ctx->tls_ssl_ctx;
787 openssl_listen_ctx_t *olc;
790 /* Start a new connection */
792 olc = openssl_lctx_get (olc_index);
793 oc->ssl = SSL_new (olc->ssl_ctx);
796 TLS_DBG (1, "Couldn't initialize ssl struct");
800 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
802 oc->rbio = BIO_new_tls (ctx->tls_session_handle);
803 oc->wbio = BIO_new_tls (ctx->tls_session_handle);
807 oc->rbio = BIO_new_dtls (ctx->tls_session_handle);
808 oc->wbio = BIO_new_dtls (ctx->tls_session_handle);
811 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
812 SSL_set_accept_state (oc->ssl);
814 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
815 oc->openssl_ctx_index);
817 #ifdef HAVE_OPENSSL_ASYNC
818 session_t *tls_session = session_get_from_handle (ctx->tls_session_handle);
819 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
823 rv = SSL_do_handshake (oc->ssl);
824 err = SSL_get_error (oc->ssl, rv);
825 #ifdef HAVE_OPENSSL_ASYNC
826 if (err == SSL_ERROR_WANT_ASYNC)
828 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
833 if (err != SSL_ERROR_WANT_WRITE)
837 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
838 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
843 openssl_handshake_is_over (tls_ctx_t * ctx)
845 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
848 return SSL_is_init_finished (mc->ssl);
852 openssl_transport_close (tls_ctx_t * ctx)
854 #ifdef HAVE_OPENSSL_ASYNC
855 if (vpp_openssl_is_inflight (ctx))
859 if (!openssl_handshake_is_over (ctx))
861 openssl_handle_handshake_failure (ctx);
864 session_transport_closing_notify (&ctx->connection);
869 openssl_app_close (tls_ctx_t * ctx)
871 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
872 session_t *app_session;
874 /* Wait for all data to be written to tcp */
875 app_session = session_get_from_handle (ctx->app_session_handle);
876 if (BIO_ctrl_pending (oc->rbio) <= 0
877 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
878 openssl_confirm_app_close (ctx);
884 const static tls_engine_vft_t openssl_engine = {
885 .ctx_alloc = openssl_ctx_alloc,
886 .ctx_alloc_w_thread = openssl_ctx_alloc_w_thread,
887 .ctx_free = openssl_ctx_free,
888 .ctx_attach = openssl_ctx_attach,
889 .ctx_detach = openssl_ctx_detach,
890 .ctx_get = openssl_ctx_get,
891 .ctx_get_w_thread = openssl_ctx_get_w_thread,
892 .ctx_init_server = openssl_ctx_init_server,
893 .ctx_init_client = openssl_ctx_init_client,
894 .ctx_write = openssl_ctx_write,
895 .ctx_read = openssl_ctx_read,
896 .ctx_handshake_is_over = openssl_handshake_is_over,
897 .ctx_start_listen = openssl_start_listen,
898 .ctx_stop_listen = openssl_stop_listen,
899 .ctx_transport_close = openssl_transport_close,
900 .ctx_app_close = openssl_app_close,
904 tls_init_ca_chain (void)
906 openssl_main_t *om = &openssl_main;
907 tls_main_t *tm = vnet_tls_get_main ();
912 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
914 clib_warning ("Could not initialize TLS CA certificates");
918 if (!(om->cert_store = X509_STORE_new ()))
920 clib_warning ("failed to create cert store");
924 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
925 rv = X509_STORE_load_file (om->cert_store, tm->ca_cert_path);
927 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
932 clib_warning ("failed to load ca certificate");
935 if (tm->use_test_cert_in_ca)
937 cert_bio = BIO_new (BIO_s_mem ());
938 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
939 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
942 clib_warning ("unable to parse certificate");
945 X509_STORE_add_cert (om->cert_store, testcert);
948 return (rv < 0 ? -1 : 0);
952 tls_openssl_set_ciphers (char *ciphers)
954 openssl_main_t *om = &openssl_main;
962 vec_validate (om->ciphers, strlen (ciphers) - 1);
963 for (i = 0; i < vec_len (om->ciphers); i++)
965 om->ciphers[i] = toupper (ciphers[i]);
972 static clib_error_t *
973 tls_openssl_init (vlib_main_t * vm)
975 vlib_thread_main_t *vtm = vlib_get_thread_main ();
976 openssl_main_t *om = &openssl_main;
977 clib_error_t *error = 0;
980 error = tls_openssl_api_init (vm);
981 num_threads = 1 /* main thread */ + vtm->n_threads;
984 SSL_load_error_strings ();
986 if (tls_init_ca_chain ())
988 clib_warning ("failed to initialize TLS CA chain");
992 vec_validate (om->ctx_pool, num_threads - 1);
993 vec_validate (om->rx_bufs, num_threads - 1);
994 vec_validate (om->tx_bufs, num_threads - 1);
995 for (i = 0; i < num_threads; i++)
997 vec_validate (om->rx_bufs[i], DTLSO_MAX_DGRAM);
998 vec_validate (om->tx_bufs[i], DTLSO_MAX_DGRAM);
1000 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
1002 om->engine_init = 0;
1004 /* default ciphers */
1005 tls_openssl_set_ciphers
1006 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
1011 VLIB_INIT_FUNCTION (tls_openssl_init) =
1013 .runs_after = VLIB_INITS("tls_init"),
1017 #ifdef HAVE_OPENSSL_ASYNC
1018 static clib_error_t *
1019 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
1020 vlib_cli_command_t * cmd)
1022 openssl_main_t *om = &openssl_main;
1023 char *engine_name = NULL;
1024 char *engine_alg = NULL;
1025 char *ciphers = NULL;
1026 u8 engine_name_set = 0;
1029 /* By present, it is not allowed to configure engine again after running */
1030 if (om->engine_init)
1032 clib_warning ("engine has started!\n");
1033 return clib_error_return
1034 (0, "engine has started, and no config is accepted");
1037 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1039 if (unformat (input, "engine %s", &engine_name))
1041 engine_name_set = 1;
1043 else if (unformat (input, "async"))
1047 else if (unformat (input, "alg %s", &engine_alg))
1049 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
1050 engine_alg[i] = toupper (engine_alg[i]);
1052 else if (unformat (input, "ciphers %s", &ciphers))
1054 tls_openssl_set_ciphers (ciphers);
1057 return clib_error_return (0, "failed: unknown input `%U'",
1058 format_unformat_error, input);
1061 /* reset parameters if engine is not configured */
1062 if (!engine_name_set)
1064 clib_warning ("No engine provided! \n");
1069 vnet_session_enable_disable (vm, 1);
1070 if (openssl_engine_register (engine_name, engine_alg, async) < 0)
1072 return clib_error_return (0, "Failed to register %s polling",
1077 vlib_cli_output (vm, "Successfully register engine %s\n",
1087 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
1089 .path = "tls openssl set",
1090 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
1091 .function = tls_openssl_set_command_fn,
1097 VLIB_PLUGIN_REGISTER () = {
1098 .version = VPP_BUILD_VER,
1099 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
1104 * fd.io coding-style-patch-verification: ON
1107 * eval: (c-set-style "gnu")