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 if (PREDICT_FALSE (ctx->app_closed && BIO_ctrl_pending (oc->rbio) <= 0))
390 openssl_confirm_app_close (ctx);
392 /* Deschedule and wait for deq notification if fifo is almost full */
393 enq_buf = clib_min (svm_fifo_size (ts->tx_fifo) / 2, TLSO_MIN_ENQ_SPACE);
394 if (space < wrote + enq_buf)
396 svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
397 transport_connection_deschedule (&ctx->connection);
398 sp->flags |= TRANSPORT_SND_F_DESCHED;
401 /* Request tx reschedule of the app session */
402 app_session->flags |= SESSION_F_CUSTOM_TX;
408 openssl_ctx_write_dtls (tls_ctx_t *ctx, session_t *app_session,
409 transport_send_params_t *sp)
411 openssl_main_t *om = &openssl_main;
412 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
413 session_dgram_pre_hdr_t hdr;
416 u32 read = 0, to_deq, dgram_sz;
419 us = session_get_from_handle (ctx->tls_session_handle);
420 to_deq = svm_fifo_max_dequeue_cons (app_session->tx_fifo);
421 buf = om->tx_bufs[ctx->c_thread_index];
425 /* Peeking only pre-header dgram because the session is connected */
426 rv = svm_fifo_peek (app_session->tx_fifo, 0, sizeof (hdr), (u8 *) &hdr);
427 ASSERT (rv == sizeof (hdr) && hdr.data_length < vec_len (buf));
428 ASSERT (to_deq >= hdr.data_length + SESSION_CONN_HDR_LEN);
430 dgram_sz = hdr.data_length + SESSION_CONN_HDR_LEN;
431 if (svm_fifo_max_enqueue_prod (us->tx_fifo) < dgram_sz + TLSO_CTRL_BYTES)
433 svm_fifo_add_want_deq_ntf (us->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
434 transport_connection_deschedule (&ctx->connection);
435 sp->flags |= TRANSPORT_SND_F_DESCHED;
439 rv = svm_fifo_peek (app_session->tx_fifo, SESSION_CONN_HDR_LEN,
440 hdr.data_length, buf);
441 ASSERT (rv == hdr.data_length);
442 svm_fifo_dequeue_drop (app_session->tx_fifo, dgram_sz);
444 wrote = SSL_write (oc->ssl, buf, rv);
453 if (svm_fifo_needs_deq_ntf (app_session->tx_fifo, read))
454 session_dequeue_notify (app_session);
457 tls_add_vpp_q_tx_evt (us);
459 if (PREDICT_FALSE (ctx->app_closed &&
460 !svm_fifo_max_enqueue_prod (us->rx_fifo)))
461 openssl_confirm_app_close (ctx);
467 openssl_ctx_write (tls_ctx_t *ctx, session_t *app_session,
468 transport_send_params_t *sp)
470 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
471 return openssl_ctx_write_tls (ctx, app_session, sp);
473 return openssl_ctx_write_dtls (ctx, app_session, sp);
477 openssl_ctx_read_tls (tls_ctx_t *ctx, session_t *tls_session)
479 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
480 session_t *app_session;
484 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
486 if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
490 app_session = session_get_from_handle (ctx->app_session_handle);
491 f = app_session->rx_fifo;
493 read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
495 /* If handshake just completed, session may still be in accepting state */
496 if (read && app_session->session_state >= SESSION_STATE_READY)
497 tls_notify_app_enqueue (ctx, app_session);
499 if ((SSL_pending (oc->ssl) > 0) ||
500 svm_fifo_max_dequeue_cons (tls_session->rx_fifo))
501 tls_add_vpp_q_builtin_rx_evt (tls_session);
507 openssl_ctx_read_dtls (tls_ctx_t *ctx, session_t *us)
509 openssl_main_t *om = &openssl_main;
510 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
511 session_dgram_hdr_t hdr;
512 session_t *app_session;
517 if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
519 u32 us_index = us->session_index;
520 if (openssl_ctx_handshake_rx (ctx, us) < 0)
522 /* Session pool might grow when allocating the app's session */
523 us = session_get (us_index, ctx->c_thread_index);
526 buf = om->rx_bufs[ctx->c_thread_index];
527 app_session = session_get_from_handle (ctx->app_session_handle);
528 svm_fifo_fill_chunk_list (app_session->rx_fifo);
530 while (svm_fifo_max_dequeue_cons (us->rx_fifo) > 0)
532 if (svm_fifo_max_enqueue_prod (app_session->rx_fifo) < DTLSO_MAX_DGRAM)
534 tls_add_vpp_q_builtin_rx_evt (us);
538 read = SSL_read (oc->ssl, buf, vec_len (buf));
539 if (PREDICT_FALSE (read <= 0))
542 tls_add_vpp_q_builtin_rx_evt (us);
547 hdr.data_length = read;
550 svm_fifo_seg_t segs[2] = { { (u8 *) &hdr, sizeof (hdr) },
553 rv = svm_fifo_enqueue_segments (app_session->rx_fifo, segs, 2,
554 0 /* allow partial */);
560 /* If handshake just completed, session may still be in accepting state */
561 if (app_session->session_state >= SESSION_STATE_READY)
562 tls_notify_app_enqueue (ctx, app_session);
568 openssl_ctx_read (tls_ctx_t *ctx, session_t *ts)
570 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
571 return openssl_ctx_read_tls (ctx, ts);
573 return openssl_ctx_read_dtls (ctx, ts);
577 openssl_ctx_init_client (tls_ctx_t * ctx)
579 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
580 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
581 openssl_main_t *om = &openssl_main;
582 const SSL_METHOD *method;
585 method = ctx->tls_type == TRANSPORT_PROTO_TLS ? SSLv23_client_method () :
586 DTLS_client_method ();
589 TLS_DBG (1, "(D)TLS_method returned null");
593 oc->ssl_ctx = SSL_CTX_new (method);
594 if (oc->ssl_ctx == NULL)
596 TLS_DBG (1, "SSL_CTX_new returned null");
600 SSL_CTX_set_ecdh_auto (oc->ssl_ctx, 1);
601 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
602 #ifdef HAVE_OPENSSL_ASYNC
604 SSL_CTX_set_mode (oc->ssl_ctx, SSL_MODE_ASYNC);
606 rv = SSL_CTX_set_cipher_list (oc->ssl_ctx, (const char *) om->ciphers);
609 TLS_DBG (1, "Couldn't set cipher");
613 SSL_CTX_set_options (oc->ssl_ctx, flags);
614 SSL_CTX_set_cert_store (oc->ssl_ctx, om->cert_store);
616 oc->ssl = SSL_new (oc->ssl_ctx);
619 TLS_DBG (1, "Couldn't initialize ssl struct");
623 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
625 oc->rbio = BIO_new_tls (ctx->tls_session_handle);
626 oc->wbio = BIO_new_tls (ctx->tls_session_handle);
630 oc->rbio = BIO_new_dtls (ctx->tls_session_handle);
631 oc->wbio = BIO_new_dtls (ctx->tls_session_handle);
634 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
635 SSL_set_connect_state (oc->ssl);
637 rv = SSL_set_tlsext_host_name (oc->ssl, ctx->srv_hostname);
640 TLS_DBG (1, "Couldn't set hostname");
645 * 2. Do the first steps in the handshake.
647 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
648 oc->openssl_ctx_index);
650 #ifdef HAVE_OPENSSL_ASYNC
651 session_t *tls_session = session_get_from_handle (ctx->tls_session_handle);
652 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
656 rv = SSL_do_handshake (oc->ssl);
657 err = SSL_get_error (oc->ssl, rv);
658 #ifdef HAVE_OPENSSL_ASYNC
659 if (err == SSL_ERROR_WANT_ASYNC)
661 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
666 if (err != SSL_ERROR_WANT_WRITE)
670 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
671 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
676 openssl_start_listen (tls_ctx_t * lctx)
678 const SSL_METHOD *method;
685 openssl_listen_ctx_t *olc;
686 app_cert_key_pair_t *ckpair;
688 long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
689 openssl_main_t *om = &openssl_main;
691 ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
695 if (!ckpair->cert || !ckpair->key)
697 TLS_DBG (1, "tls cert and/or key not configured %d",
698 lctx->parent_app_wrk_index);
702 method = lctx->tls_type == TRANSPORT_PROTO_TLS ? SSLv23_server_method () :
703 DTLS_server_method ();
704 ssl_ctx = SSL_CTX_new (method);
707 clib_warning ("Unable to create SSL context");
711 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
712 #ifdef HAVE_OPENSSL_ASYNC
715 SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ASYNC);
716 SSL_CTX_set_async_callback (ssl_ctx, tls_async_openssl_callback);
719 SSL_CTX_set_options (ssl_ctx, flags);
720 SSL_CTX_set_ecdh_auto (ssl_ctx, 1);
722 rv = SSL_CTX_set_cipher_list (ssl_ctx, (const char *) om->ciphers);
725 TLS_DBG (1, "Couldn't set cipher");
730 * Set the key and cert
732 cert_bio = BIO_new (BIO_s_mem ());
733 BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
734 srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
737 clib_warning ("unable to parse certificate");
740 SSL_CTX_use_certificate (ssl_ctx, srvcert);
743 cert_bio = BIO_new (BIO_s_mem ());
744 BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
745 pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
748 clib_warning ("unable to parse pkey");
751 SSL_CTX_use_PrivateKey (ssl_ctx, pkey);
754 olc_index = openssl_listen_ctx_alloc ();
755 olc = openssl_lctx_get (olc_index);
756 olc->ssl_ctx = ssl_ctx;
757 olc->srvcert = srvcert;
760 /* store SSL_CTX into TLS level structure */
761 lctx->tls_ssl_ctx = olc_index;
768 openssl_stop_listen (tls_ctx_t * lctx)
771 openssl_listen_ctx_t *olc;
773 olc_index = lctx->tls_ssl_ctx;
774 olc = openssl_lctx_get (olc_index);
776 X509_free (olc->srvcert);
777 EVP_PKEY_free (olc->pkey);
779 SSL_CTX_free (olc->ssl_ctx);
780 openssl_listen_ctx_free (olc);
786 openssl_ctx_init_server (tls_ctx_t * ctx)
788 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
789 u32 olc_index = ctx->tls_ssl_ctx;
790 openssl_listen_ctx_t *olc;
793 /* Start a new connection */
795 olc = openssl_lctx_get (olc_index);
796 oc->ssl = SSL_new (olc->ssl_ctx);
799 TLS_DBG (1, "Couldn't initialize ssl struct");
803 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
805 oc->rbio = BIO_new_tls (ctx->tls_session_handle);
806 oc->wbio = BIO_new_tls (ctx->tls_session_handle);
810 oc->rbio = BIO_new_dtls (ctx->tls_session_handle);
811 oc->wbio = BIO_new_dtls (ctx->tls_session_handle);
814 SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
815 SSL_set_accept_state (oc->ssl);
817 TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
818 oc->openssl_ctx_index);
820 #ifdef HAVE_OPENSSL_ASYNC
821 session_t *tls_session = session_get_from_handle (ctx->tls_session_handle);
822 vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
826 rv = SSL_do_handshake (oc->ssl);
827 err = SSL_get_error (oc->ssl, rv);
828 #ifdef HAVE_OPENSSL_ASYNC
829 if (err == SSL_ERROR_WANT_ASYNC)
831 openssl_check_async_status (ctx, openssl_ctx_handshake_rx,
836 if (err != SSL_ERROR_WANT_WRITE)
840 TLS_DBG (2, "tls state for [%u]%u is su", ctx->c_thread_index,
841 oc->openssl_ctx_index, SSL_state_string_long (oc->ssl));
846 openssl_handshake_is_over (tls_ctx_t * ctx)
848 openssl_ctx_t *mc = (openssl_ctx_t *) ctx;
851 return SSL_is_init_finished (mc->ssl);
855 openssl_transport_close (tls_ctx_t * ctx)
857 #ifdef HAVE_OPENSSL_ASYNC
858 if (vpp_openssl_is_inflight (ctx))
862 if (!openssl_handshake_is_over (ctx))
864 openssl_handle_handshake_failure (ctx);
867 session_transport_closing_notify (&ctx->connection);
872 openssl_app_close (tls_ctx_t * ctx)
874 openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
875 session_t *app_session;
877 /* Wait for all data to be written to tcp */
878 app_session = session_get_from_handle (ctx->app_session_handle);
879 if (BIO_ctrl_pending (oc->rbio) <= 0
880 && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
881 openssl_confirm_app_close (ctx);
887 const static tls_engine_vft_t openssl_engine = {
888 .ctx_alloc = openssl_ctx_alloc,
889 .ctx_alloc_w_thread = openssl_ctx_alloc_w_thread,
890 .ctx_free = openssl_ctx_free,
891 .ctx_attach = openssl_ctx_attach,
892 .ctx_detach = openssl_ctx_detach,
893 .ctx_get = openssl_ctx_get,
894 .ctx_get_w_thread = openssl_ctx_get_w_thread,
895 .ctx_init_server = openssl_ctx_init_server,
896 .ctx_init_client = openssl_ctx_init_client,
897 .ctx_write = openssl_ctx_write,
898 .ctx_read = openssl_ctx_read,
899 .ctx_handshake_is_over = openssl_handshake_is_over,
900 .ctx_start_listen = openssl_start_listen,
901 .ctx_stop_listen = openssl_stop_listen,
902 .ctx_transport_close = openssl_transport_close,
903 .ctx_app_close = openssl_app_close,
907 tls_init_ca_chain (void)
909 openssl_main_t *om = &openssl_main;
910 tls_main_t *tm = vnet_tls_get_main ();
915 if (access (tm->ca_cert_path, F_OK | R_OK) == -1)
917 clib_warning ("Could not initialize TLS CA certificates");
921 if (!(om->cert_store = X509_STORE_new ()))
923 clib_warning ("failed to create cert store");
927 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
928 rv = X509_STORE_load_file (om->cert_store, tm->ca_cert_path);
930 rv = X509_STORE_load_locations (om->cert_store, tm->ca_cert_path, 0);
935 clib_warning ("failed to load ca certificate");
938 if (tm->use_test_cert_in_ca)
940 cert_bio = BIO_new (BIO_s_mem ());
941 BIO_write (cert_bio, test_srv_crt_rsa, test_srv_crt_rsa_len);
942 testcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
945 clib_warning ("unable to parse certificate");
948 X509_STORE_add_cert (om->cert_store, testcert);
951 return (rv < 0 ? -1 : 0);
955 tls_openssl_set_ciphers (char *ciphers)
957 openssl_main_t *om = &openssl_main;
965 vec_validate (om->ciphers, strlen (ciphers) - 1);
966 for (i = 0; i < vec_len (om->ciphers); i++)
968 om->ciphers[i] = toupper (ciphers[i]);
975 static clib_error_t *
976 tls_openssl_init (vlib_main_t * vm)
978 vlib_thread_main_t *vtm = vlib_get_thread_main ();
979 openssl_main_t *om = &openssl_main;
980 clib_error_t *error = 0;
983 error = tls_openssl_api_init (vm);
984 num_threads = 1 /* main thread */ + vtm->n_threads;
987 SSL_load_error_strings ();
989 if (tls_init_ca_chain ())
991 clib_warning ("failed to initialize TLS CA chain");
995 vec_validate (om->ctx_pool, num_threads - 1);
996 vec_validate (om->rx_bufs, num_threads - 1);
997 vec_validate (om->tx_bufs, num_threads - 1);
998 for (i = 0; i < num_threads; i++)
1000 vec_validate (om->rx_bufs[i], DTLSO_MAX_DGRAM);
1001 vec_validate (om->tx_bufs[i], DTLSO_MAX_DGRAM);
1003 tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
1005 om->engine_init = 0;
1007 /* default ciphers */
1008 tls_openssl_set_ciphers
1009 ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
1014 VLIB_INIT_FUNCTION (tls_openssl_init) =
1016 .runs_after = VLIB_INITS("tls_init"),
1020 #ifdef HAVE_OPENSSL_ASYNC
1021 static clib_error_t *
1022 tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
1023 vlib_cli_command_t * cmd)
1025 openssl_main_t *om = &openssl_main;
1026 char *engine_name = NULL;
1027 char *engine_alg = NULL;
1028 char *ciphers = NULL;
1029 u8 engine_name_set = 0;
1032 /* By present, it is not allowed to configure engine again after running */
1033 if (om->engine_init)
1035 clib_warning ("engine has started!\n");
1036 return clib_error_return
1037 (0, "engine has started, and no config is accepted");
1040 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1042 if (unformat (input, "engine %s", &engine_name))
1044 engine_name_set = 1;
1046 else if (unformat (input, "async"))
1050 else if (unformat (input, "alg %s", &engine_alg))
1052 for (i = 0; i < strnlen (engine_alg, MAX_CRYPTO_LEN); i++)
1053 engine_alg[i] = toupper (engine_alg[i]);
1055 else if (unformat (input, "ciphers %s", &ciphers))
1057 tls_openssl_set_ciphers (ciphers);
1060 return clib_error_return (0, "failed: unknown input `%U'",
1061 format_unformat_error, input);
1064 /* reset parameters if engine is not configured */
1065 if (!engine_name_set)
1067 clib_warning ("No engine provided! \n");
1072 vnet_session_enable_disable (vm, 1);
1073 if (openssl_engine_register (engine_name, engine_alg, async) < 0)
1075 return clib_error_return (0, "Failed to register %s polling",
1080 vlib_cli_output (vm, "Successfully register engine %s\n",
1090 VLIB_CLI_COMMAND (tls_openssl_set_command, static) =
1092 .path = "tls openssl set",
1093 .short_help = "tls openssl set [engine <engine name>] [alg [algorithm] [async]",
1094 .function = tls_openssl_set_command_fn,
1100 VLIB_PLUGIN_REGISTER () = {
1101 .version = VPP_BUILD_VER,
1102 .description = "Transport Layer Security (TLS) Engine, OpenSSL Based",
1107 * fd.io coding-style-patch-verification: ON
1110 * eval: (c-set-style "gnu")