diff options
Diffstat (limited to 'src/vnet/session-apps/tls.c')
| -rw-r--r-- | src/vnet/session-apps/tls.c | 1234 |
1 files changed, 0 insertions, 1234 deletions
diff --git a/src/vnet/session-apps/tls.c b/src/vnet/session-apps/tls.c deleted file mode 100644 index d71dfb43d3c..00000000000 --- a/src/vnet/session-apps/tls.c +++ /dev/null @@ -1,1234 +0,0 @@ -/* - * Copyright (c) 2018 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <vnet/session/application_interface.h> -#include <vppinfra/lock.h> -#include <mbedtls/ssl.h> -#include <mbedtls/certs.h> -#include <mbedtls/entropy.h> -#include <mbedtls/ctr_drbg.h> -#include <mbedtls/timing.h> -#include <mbedtls/debug.h> - -#define TLS_DEBUG 0 -#define TLS_DEBUG_LEVEL_CLIENT 0 -#define TLS_DEBUG_LEVEL_SERVER 0 - -#define TLS_CHUNK_SIZE (1 << 14) -#define TLS_USE_OUR_MEM_FUNCS 0 -#define TLS_CA_CERT_PATH "/etc/ssl/certs/ca-certificates.crt" - -#if TLS_DEBUG -#define TLS_DBG(_lvl, _fmt, _args...) \ - if (_lvl <= TLS_DEBUG) \ - clib_warning (_fmt, ##_args) -#else -#define TLS_DBG(_fmt, _args...) -#endif - -#if TLS_USE_OUR_MEM_FUNCS -#include <mbedtls/platform.h> - -void * -mbedtls_calloc_fn (size_t n, size_t size) -{ - void *ptr; - ptr = clib_mem_alloc (n * size); - memset (ptr, 0, sizeof (*ptr)); - return ptr; -} - -void -mbedtls_free_fn (void *ptr) -{ - if (ptr) - clib_mem_free (ptr); -} -#endif - -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct tls_cxt_id_ -{ - u32 parent_app_index; - session_handle_t app_session_handle; - session_handle_t tls_session_handle; - u32 listener_ctx_index; - u8 tcp_is_ip4; -}) tls_ctx_id_t; -/* *INDENT-ON* */ - -STATIC_ASSERT (sizeof (tls_ctx_id_t) <= 42, "ctx id must be less than 42"); - -typedef struct tls_ctx_ -{ - union - { - transport_connection_t connection; - tls_ctx_id_t c_tls_ctx_id; - }; -#define parent_app_index c_tls_ctx_id.parent_app_index -#define app_session_handle c_tls_ctx_id.app_session_handle -#define tls_session_handle c_tls_ctx_id.tls_session_handle -#define listener_ctx_index c_tls_ctx_id.listener_ctx_index -#define tcp_is_ip4 c_tls_ctx_id.tcp_is_ip4 -#define tls_ctx_idx c_c_index - /* Temporary storage for session open opaque. Overwritten once - * underlying tcp connection is established */ -#define parent_app_api_context c_s_index - - u8 is_passive_close; - u8 *srv_hostname; - mbedtls_ssl_context ssl; - mbedtls_ssl_config conf; - mbedtls_x509_crt srvcert; - mbedtls_pk_context pkey; -} tls_ctx_t; - -typedef struct tls_main_ -{ - u32 app_index; - tls_ctx_t ***ctx_pool; - mbedtls_ctr_drbg_context *ctr_drbgs; - mbedtls_entropy_context *entropy_pools; - tls_ctx_t *listener_ctx_pool; - tls_ctx_t *half_open_ctx_pool; - clib_rwlock_t half_open_rwlock; - mbedtls_x509_crt cacert; - - /* - * Config - */ - u8 use_test_cert_in_ca; - char *ca_cert_path; -} tls_main_t; - -static tls_main_t tls_main; - -void tls_disconnect (u32 ctx_index, u32 thread_index); - -static inline int -tls_add_vpp_q_evt (svm_fifo_t * f, u8 evt_type) -{ - session_fifo_event_t evt; - svm_queue_t *q; - - if (svm_fifo_set_event (f)) - { - evt.fifo = f; - evt.event_type = evt_type; - - q = session_manager_get_vpp_event_queue (f->master_thread_index); - if (PREDICT_TRUE (q->cursize < q->maxsize)) - { - svm_queue_add (q, (u8 *) & evt, 0 /* do wait for mutex */ ); - } - else - { - clib_warning ("vpp's evt q full"); - return -1; - } - } - return 0; -} - -static inline int -tls_add_app_q_evt (application_t * app, stream_session_t * app_session) -{ - session_fifo_event_t evt; - svm_queue_t *q; - - if (PREDICT_FALSE (app_session->session_state == SESSION_STATE_CLOSED)) - { - /* Session is closed so app will never clean up. Flush rx fifo */ - u32 to_dequeue = svm_fifo_max_dequeue (app_session->server_rx_fifo); - if (to_dequeue) - svm_fifo_dequeue_drop (app_session->server_rx_fifo, to_dequeue); - return 0; - } - - if (app->cb_fns.builtin_app_rx_callback) - return app->cb_fns.builtin_app_rx_callback (app_session); - - if (svm_fifo_set_event (app_session->server_rx_fifo)) - { - evt.fifo = app_session->server_rx_fifo; - evt.event_type = FIFO_EVENT_APP_RX; - q = app->event_queue; - - if (PREDICT_TRUE (q->cursize < q->maxsize)) - { - svm_queue_add (q, (u8 *) & evt, 0 /* do wait for mutex */ ); - } - else - { - clib_warning ("app evt q full"); - return -1; - } - } - return 0; -} - -u32 -tls_ctx_alloc (void) -{ - u8 thread_index = vlib_get_thread_index (); - tls_main_t *tm = &tls_main; - tls_ctx_t **ctx; - - pool_get (tm->ctx_pool[thread_index], ctx); - if (!(*ctx)) - *ctx = clib_mem_alloc (sizeof (tls_ctx_t)); - - memset (*ctx, 0, sizeof (tls_ctx_t)); - (*ctx)->c_thread_index = thread_index; - return ctx - tm->ctx_pool[thread_index]; -} - -void -tls_ctx_free (tls_ctx_t * ctx) -{ - vec_free (ctx->srv_hostname); - pool_put_index (tls_main.ctx_pool[vlib_get_thread_index ()], - ctx->tls_ctx_idx); -} - -tls_ctx_t * -tls_ctx_get (u32 ctx_index) -{ - tls_ctx_t **ctx; - ctx = pool_elt_at_index (tls_main.ctx_pool[vlib_get_thread_index ()], - ctx_index); - return (*ctx); -} - -tls_ctx_t * -tls_ctx_get_w_thread (u32 ctx_index, u8 thread_index) -{ - tls_ctx_t **ctx; - ctx = pool_elt_at_index (tls_main.ctx_pool[thread_index], ctx_index); - return (*ctx); -} - -u32 -tls_listener_ctx_alloc (void) -{ - tls_main_t *tm = &tls_main; - tls_ctx_t *ctx; - - pool_get (tm->listener_ctx_pool, ctx); - memset (ctx, 0, sizeof (*ctx)); - return ctx - tm->listener_ctx_pool; -} - -void -tls_listener_ctx_free (tls_ctx_t * ctx) -{ - pool_put (tls_main.listener_ctx_pool, ctx); -} - -tls_ctx_t * -tls_listener_ctx_get (u32 ctx_index) -{ - return pool_elt_at_index (tls_main.listener_ctx_pool, ctx_index); -} - -u32 -tls_listener_ctx_index (tls_ctx_t * ctx) -{ - return (ctx - tls_main.listener_ctx_pool); -} - -u32 -tls_ctx_half_open_alloc (void) -{ - tls_main_t *tm = &tls_main; - u8 will_expand = 0; - tls_ctx_t *ctx; - u32 ctx_index; - - pool_get_aligned_will_expand (tm->half_open_ctx_pool, will_expand, 0); - if (PREDICT_FALSE (will_expand && vlib_num_workers ())) - { - clib_rwlock_writer_lock (&tm->half_open_rwlock); - pool_get (tm->half_open_ctx_pool, ctx); - memset (ctx, 0, sizeof (*ctx)); - ctx_index = ctx - tm->half_open_ctx_pool; - clib_rwlock_writer_unlock (&tm->half_open_rwlock); - } - else - { - pool_get (tm->half_open_ctx_pool, ctx); - memset (ctx, 0, sizeof (*ctx)); - ctx_index = ctx - tm->half_open_ctx_pool; - } - return ctx_index; -} - -void -tls_ctx_half_open_free (u32 ho_index) -{ - tls_main_t *tm = &tls_main; - clib_rwlock_writer_lock (&tm->half_open_rwlock); - pool_put_index (tls_main.half_open_ctx_pool, ho_index); - clib_rwlock_writer_unlock (&tm->half_open_rwlock); -} - -tls_ctx_t * -tls_ctx_half_open_get (u32 ctx_index) -{ - tls_main_t *tm = &tls_main; - clib_rwlock_reader_lock (&tm->half_open_rwlock); - return pool_elt_at_index (tm->half_open_ctx_pool, ctx_index); -} - -void -tls_ctx_half_open_reader_unlock () -{ - clib_rwlock_reader_unlock (&tls_main.half_open_rwlock); -} - -u32 -tls_ctx_half_open_index (tls_ctx_t * ctx) -{ - return (ctx - tls_main.half_open_ctx_pool); -} - -static int -tls_init_ctr_drbgs_and_entropy (u32 num_threads) -{ - tls_main_t *tm = &tls_main; - int i; - - vec_validate (tm->ctr_drbgs, num_threads - 1); - vec_validate (tm->entropy_pools, num_threads - 1); - for (i = 0; i < num_threads; i++) - tls_main.ctr_drbgs[i].f_entropy = 0; - - return 0; -} - -static int -tls_init_ctr_seed_drbgs (void) -{ - u32 thread_index = vlib_get_thread_index (); - tls_main_t *tm = &tls_main; - u8 *pers; - int rv; - pers = format (0, "vpp thread %u", thread_index); - - mbedtls_entropy_init (&tm->entropy_pools[thread_index]); - mbedtls_ctr_drbg_init (&tls_main.ctr_drbgs[thread_index]); - if ((rv = mbedtls_ctr_drbg_seed (&tm->ctr_drbgs[thread_index], - mbedtls_entropy_func, - &tm->entropy_pools[thread_index], - (const unsigned char *) pers, - vec_len (pers))) != 0) - { - vec_free (pers); - TLS_DBG (1, " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", rv); - return -1; - } - vec_free (pers); - return 0; -} - -mbedtls_ctr_drbg_context * -tls_get_ctr_drbg () -{ - u8 thread_index = vlib_get_thread_index (); - if (PREDICT_FALSE (!tls_main.ctr_drbgs[thread_index].f_entropy)) - tls_init_ctr_seed_drbgs (); - return &tls_main.ctr_drbgs[thread_index]; -} - -static int -tls_net_send (void *ctx_indexp, const unsigned char *buf, size_t len) -{ - stream_session_t *tls_session; - uword ctx_index; - tls_ctx_t *ctx; - int rv; - - ctx_index = pointer_to_uword (ctx_indexp); - ctx = tls_ctx_get (ctx_index); - tls_session = session_get_from_handle (ctx->tls_session_handle); - rv = svm_fifo_enqueue_nowait (tls_session->server_tx_fifo, len, buf); - if (rv < 0) - return MBEDTLS_ERR_SSL_WANT_WRITE; - tls_add_vpp_q_evt (tls_session->server_tx_fifo, FIFO_EVENT_APP_TX); - return rv; -} - -static int -tls_net_recv (void *ctx_indexp, unsigned char *buf, size_t len) -{ - stream_session_t *tls_session; - uword ctx_index; - tls_ctx_t *ctx; - int rv; - - ctx_index = pointer_to_uword (ctx_indexp); - ctx = tls_ctx_get (ctx_index); - tls_session = session_get_from_handle (ctx->tls_session_handle); - rv = svm_fifo_dequeue_nowait (tls_session->server_rx_fifo, len, buf); - return (rv < 0) ? 0 : rv; -} - -static void -mbedtls_debug (void *ctx, int level, const char *file, int line, - const char *str) -{ - ((void) level); - fprintf ((FILE *) ctx, "%s:%04d: %s", file, line, str); - fflush ((FILE *) ctx); -} - -static int -tls_ctx_init_client (tls_ctx_t * ctx) -{ - tls_main_t *tm = &tls_main; - void *ctx_ptr; - int rv; - - /* - * 1. Setup SSL - */ - mbedtls_ssl_init (&ctx->ssl); - mbedtls_ssl_config_init (&ctx->conf); - if ((rv = mbedtls_ssl_config_defaults (&ctx->conf, MBEDTLS_SSL_IS_CLIENT, - MBEDTLS_SSL_TRANSPORT_STREAM, - MBEDTLS_SSL_PRESET_DEFAULT)) != 0) - { - TLS_DBG (1, "failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", - rv); - return -1; - } - - mbedtls_ssl_conf_authmode (&ctx->conf, MBEDTLS_SSL_VERIFY_OPTIONAL); - mbedtls_ssl_conf_ca_chain (&ctx->conf, &tm->cacert, NULL); - mbedtls_ssl_conf_rng (&ctx->conf, mbedtls_ctr_drbg_random, - tls_get_ctr_drbg ()); - mbedtls_ssl_conf_dbg (&ctx->conf, mbedtls_debug, stdout); - - if ((rv = mbedtls_ssl_setup (&ctx->ssl, &ctx->conf)) != 0) - { - TLS_DBG (1, "failed\n ! mbedtls_ssl_setup returned %d\n", rv); - return -1; - } - - if ((rv = mbedtls_ssl_set_hostname (&ctx->ssl, - (const char *) ctx->srv_hostname)) != 0) - { - TLS_DBG (1, "failed\n ! mbedtls_ssl_set_hostname returned %d\n", rv); - return -1; - } - - ctx_ptr = uword_to_pointer (ctx->tls_ctx_idx, void *); - mbedtls_ssl_set_bio (&ctx->ssl, ctx_ptr, tls_net_send, tls_net_recv, NULL); - mbedtls_debug_set_threshold (TLS_DEBUG_LEVEL_CLIENT); - - /* - * 2. Do the first 2 steps in the handshake. - */ - TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index, - ctx->tls_ctx_idx); - while (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - { - rv = mbedtls_ssl_handshake_step (&ctx->ssl); - if (rv != 0) - break; - } - TLS_DBG (2, "tls state for [%u]%u is %u", ctx->c_thread_index, - ctx->tls_ctx_idx, ctx->ssl.state); - return 0; -} - -static int -tls_ctx_init_server (tls_ctx_t * ctx) -{ - tls_main_t *tm = &tls_main; - application_t *app; - void *ctx_ptr; - int rv; - - mbedtls_ssl_init (&ctx->ssl); - mbedtls_ssl_config_init (&ctx->conf); - mbedtls_x509_crt_init (&ctx->srvcert); - mbedtls_pk_init (&ctx->pkey); - - /* - * 1. Cert - */ - app = application_get (ctx->parent_app_index); - if (!app->tls_cert || !app->tls_key) - { - TLS_DBG (1, " failed\n ! tls cert and/or key not configured %d", - ctx->parent_app_index); - return -1; - } - - rv = mbedtls_x509_crt_parse (&ctx->srvcert, - (const unsigned char *) app->tls_cert, - vec_len (app->tls_cert)); - if (rv != 0) - { - TLS_DBG (1, " failed\n ! mbedtls_x509_crt_parse returned %d", rv); - goto exit; - } - - rv = mbedtls_pk_parse_key (&ctx->pkey, - (const unsigned char *) app->tls_key, - vec_len (app->tls_key), NULL, 0); - if (rv != 0) - { - TLS_DBG (1, " failed\n ! mbedtls_pk_parse_key returned %d", rv); - goto exit; - } - - /* - * 2. SSL context config - */ - if ((rv = mbedtls_ssl_config_defaults (&ctx->conf, MBEDTLS_SSL_IS_SERVER, - MBEDTLS_SSL_TRANSPORT_STREAM, - MBEDTLS_SSL_PRESET_DEFAULT)) != 0) - { - TLS_DBG (1, " failed\n ! mbedtls_ssl_config_defaults returned %d", rv); - goto exit; - } - - mbedtls_ssl_conf_rng (&ctx->conf, mbedtls_ctr_drbg_random, - tls_get_ctr_drbg ()); - mbedtls_ssl_conf_dbg (&ctx->conf, mbedtls_debug, stdout); - - /* TODO CACHE - mbedtls_ssl_conf_session_cache( &ctx->conf, &cache, - mbedtls_ssl_cache_get, - mbedtls_ssl_cache_set ); - */ - - mbedtls_ssl_conf_ca_chain (&ctx->conf, &tm->cacert, NULL); - if ((rv = mbedtls_ssl_conf_own_cert (&ctx->conf, &ctx->srvcert, &ctx->pkey)) - != 0) - { - TLS_DBG (1, " failed\n ! mbedtls_ssl_conf_own_cert returned %d", rv); - goto exit; - } - - if ((rv = mbedtls_ssl_setup (&ctx->ssl, &ctx->conf)) != 0) - { - TLS_DBG (1, " failed\n ! mbedtls_ssl_setup returned %d", rv); - goto exit; - } - - mbedtls_ssl_session_reset (&ctx->ssl); - ctx_ptr = uword_to_pointer (ctx->tls_ctx_idx, void *); - mbedtls_ssl_set_bio (&ctx->ssl, ctx_ptr, tls_net_send, tls_net_recv, NULL); - - mbedtls_debug_set_threshold (TLS_DEBUG_LEVEL_SERVER); - - /* - * 3. Start handshake state machine - */ - TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index, - ctx->tls_ctx_idx); - while (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - { - rv = mbedtls_ssl_handshake_step (&ctx->ssl); - if (rv != 0) - break; - } - - TLS_DBG (2, "tls state for [%u]%u is %u", ctx->c_thread_index, - ctx->tls_ctx_idx, ctx->ssl.state); - return 0; - -exit: - return -1; -} - -static int -tls_notify_app_accept (tls_ctx_t * ctx) -{ - stream_session_t *app_listener, *app_session; - segment_manager_t *sm; - application_t *app; - tls_ctx_t *lctx; - int rv; - - app = application_get (ctx->parent_app_index); - lctx = tls_listener_ctx_get (ctx->listener_ctx_index); - app_listener = listen_session_get_from_handle (lctx->app_session_handle); - sm = application_get_listen_segment_manager (app, app_listener); - - app_session = session_alloc (vlib_get_thread_index ()); - app_session->app_index = ctx->parent_app_index; - app_session->connection_index = ctx->tls_ctx_idx; - app_session->session_type = app_listener->session_type; - app_session->listener_index = app_listener->session_index; - if ((rv = session_alloc_fifos (sm, app_session))) - { - TLS_DBG (1, "failed to allocate fifos"); - return rv; - } - ctx->c_s_index = app_session->session_index; - ctx->app_session_handle = session_handle (app_session); - return app->cb_fns.session_accept_callback (app_session); -} - -static int -tls_notify_app_connected (tls_ctx_t * ctx, u8 is_failed) -{ - int (*cb_fn) (u32, u32, stream_session_t *, u8); - stream_session_t *app_session; - segment_manager_t *sm; - application_t *app; - - app = application_get (ctx->parent_app_index); - cb_fn = app->cb_fns.session_connected_callback; - - if (is_failed) - goto failed; - - sm = application_get_connect_segment_manager (app); - app_session = session_alloc (vlib_get_thread_index ()); - app_session->app_index = ctx->parent_app_index; - app_session->connection_index = ctx->tls_ctx_idx; - app_session->session_type = - session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4); - if (session_alloc_fifos (sm, app_session)) - goto failed; - - ctx->app_session_handle = session_handle (app_session); - ctx->c_s_index = app_session->session_index; - app_session->session_state = SESSION_STATE_READY; - if (cb_fn (ctx->parent_app_index, ctx->parent_app_api_context, - app_session, 0 /* not failed */ )) - { - TLS_DBG (1, "failed to notify app"); - tls_disconnect (ctx->tls_ctx_idx, vlib_get_thread_index ()); - } - - return 0; - -failed: - return cb_fn (ctx->parent_app_index, ctx->parent_app_api_context, 0, - 1 /* failed */ ); -} - -static int -tls_handshake_rx (tls_ctx_t * ctx) -{ - u32 flags; - int rv; - while (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - { - rv = mbedtls_ssl_handshake_step (&ctx->ssl); - if (rv != 0) - break; - } - TLS_DBG (2, "tls state for %u is %u", ctx->tls_ctx_idx, ctx->ssl.state); - - if (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - return 0; - - /* - * Handshake complete - */ - if (ctx->ssl.conf->endpoint == MBEDTLS_SSL_IS_CLIENT) - { - /* - * Verify server certificate - */ - if ((flags = mbedtls_ssl_get_verify_result (&ctx->ssl)) != 0) - { - char buf[512]; - TLS_DBG (1, " failed\n"); - mbedtls_x509_crt_verify_info (buf, sizeof (buf), " ! ", flags); - TLS_DBG (1, "%s\n", buf); - - /* - * Presence of hostname enforces strict certificate verification - */ - if (ctx->srv_hostname) - { - tls_disconnect (ctx->tls_ctx_idx, vlib_get_thread_index ()); - tls_notify_app_connected (ctx, /* is failed */ 1); - return -1; - } - } - tls_notify_app_connected (ctx, /* is failed */ 0); - } - else - { - tls_notify_app_accept (ctx); - } - - TLS_DBG (1, "Handshake for %u complete. TLS cipher is %x", - ctx->tls_ctx_idx, ctx->ssl.session->ciphersuite); - return 0; -} - -void -tls_session_reset_callback (stream_session_t * s) -{ - clib_warning ("called..."); -} - -int -tls_add_segment_callback (u32 client_index, const ssvm_private_t * fs) -{ - /* No-op for builtin */ - return 0; -} - -int -tls_del_segment_callback (u32 client_index, const ssvm_private_t * fs) -{ - return 0; -} - -void -tls_session_disconnect_callback (stream_session_t * tls_session) -{ - stream_session_t *app_session; - tls_ctx_t *ctx; - application_t *app; - - ctx = tls_ctx_get (tls_session->opaque); - if (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - { - stream_session_disconnect (tls_session); - return; - } - ctx->is_passive_close = 1; - app = application_get (ctx->parent_app_index); - app_session = session_get_from_handle (ctx->app_session_handle); - app->cb_fns.session_disconnect_callback (app_session); -} - -int -tls_session_accept_callback (stream_session_t * tls_session) -{ - stream_session_t *tls_listener; - tls_ctx_t *lctx, *ctx; - u32 ctx_index; - - tls_listener = listen_session_get (tls_session->session_type, - tls_session->listener_index); - lctx = tls_listener_ctx_get (tls_listener->opaque); - ctx_index = tls_ctx_alloc (); - ctx = tls_ctx_get (ctx_index); - memcpy (ctx, lctx, sizeof (*lctx)); - ctx->c_thread_index = vlib_get_thread_index (); - ctx->tls_ctx_idx = ctx_index; - tls_session->session_state = SESSION_STATE_READY; - tls_session->opaque = ctx_index; - ctx->tls_session_handle = session_handle (tls_session); - ctx->listener_ctx_index = tls_listener->opaque; - - TLS_DBG (1, "Accept on listener %u new connection [%u]%u", - tls_listener->opaque, vlib_get_thread_index (), ctx_index); - - return tls_ctx_init_server (ctx); -} - -int -tls_app_tx_callback (stream_session_t * app_session) -{ - stream_session_t *tls_session; - tls_ctx_t *ctx; - static u8 *tmp_buf; - u32 enq_max, deq_max, deq_now; - int wrote; - - ctx = tls_ctx_get (app_session->connection_index); - if (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - tls_add_vpp_q_evt (app_session->server_tx_fifo, FIFO_EVENT_APP_TX); - - deq_max = svm_fifo_max_dequeue (app_session->server_tx_fifo); - if (!deq_max) - return 0; - - tls_session = session_get_from_handle (ctx->tls_session_handle); - enq_max = svm_fifo_max_enqueue (tls_session->server_tx_fifo); - deq_now = clib_min (deq_max, TLS_CHUNK_SIZE); - - if (PREDICT_FALSE (enq_max == 0)) - { - tls_add_vpp_q_evt (app_session->server_tx_fifo, FIFO_EVENT_APP_TX); - return 0; - } - - vec_validate (tmp_buf, deq_now); - svm_fifo_peek (app_session->server_tx_fifo, 0, deq_now, tmp_buf); - wrote = mbedtls_ssl_write (&ctx->ssl, tmp_buf, deq_now); - if (wrote <= 0) - { - tls_add_vpp_q_evt (app_session->server_tx_fifo, FIFO_EVENT_APP_TX); - return 0; - } - - svm_fifo_dequeue_drop (app_session->server_tx_fifo, wrote); - vec_reset_length (tmp_buf); - - tls_add_vpp_q_evt (tls_session->server_tx_fifo, FIFO_EVENT_APP_TX); - - if (deq_now < deq_max) - tls_add_vpp_q_evt (app_session->server_tx_fifo, FIFO_EVENT_APP_TX); - - return 0; -} - -int -tls_app_rx_callback (stream_session_t * tls_session) -{ - stream_session_t *app_session; - u32 deq_max, enq_max, enq_now; - application_t *app; - static u8 *tmp_buf; - tls_ctx_t *ctx; - int read, enq; - - ctx = tls_ctx_get (tls_session->opaque); - if (ctx->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER) - return tls_handshake_rx (ctx); - - deq_max = svm_fifo_max_dequeue (tls_session->server_rx_fifo); - if (!deq_max) - return 0; - - app_session = session_get_from_handle (ctx->app_session_handle); - enq_max = svm_fifo_max_enqueue (app_session->server_rx_fifo); - enq_now = clib_min (enq_max, TLS_CHUNK_SIZE); - - if (PREDICT_FALSE (enq_now == 0)) - { - tls_add_vpp_q_evt (tls_session->server_rx_fifo, FIFO_EVENT_BUILTIN_RX); - return 0; - } - - vec_validate (tmp_buf, enq_now); - read = mbedtls_ssl_read (&ctx->ssl, tmp_buf, enq_now); - if (read <= 0) - { - tls_add_vpp_q_evt (tls_session->server_rx_fifo, FIFO_EVENT_BUILTIN_RX); - return 0; - } - - enq = svm_fifo_enqueue_nowait (app_session->server_rx_fifo, read, tmp_buf); - ASSERT (enq == read); - vec_reset_length (tmp_buf); - - if (svm_fifo_max_dequeue (tls_session->server_rx_fifo)) - tls_add_vpp_q_evt (tls_session->server_rx_fifo, FIFO_EVENT_BUILTIN_RX); - - app = application_get_if_valid (app_session->app_index); - return tls_add_app_q_evt (app, app_session); -} - -int -tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index, - stream_session_t * tls_session, u8 is_fail) -{ - int (*cb_fn) (u32, u32, stream_session_t *, u8); - application_t *app; - tls_ctx_t *ho_ctx, *ctx; - u32 ctx_index; - - ho_ctx = tls_ctx_half_open_get (ho_ctx_index); - app = application_get (ho_ctx->parent_app_index); - cb_fn = app->cb_fns.session_connected_callback; - - if (is_fail) - { - tls_ctx_half_open_reader_unlock (); - tls_ctx_half_open_free (ho_ctx_index); - return cb_fn (ho_ctx->parent_app_index, ho_ctx->c_s_index, 0, - 1 /* failed */ ); - } - - ctx_index = tls_ctx_alloc (); - ctx = tls_ctx_get (ctx_index); - clib_memcpy (ctx, ho_ctx, sizeof (*ctx)); - tls_ctx_half_open_reader_unlock (); - tls_ctx_half_open_free (ho_ctx_index); - - ctx->c_thread_index = vlib_get_thread_index (); - ctx->tls_ctx_idx = ctx_index; - - TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%u", - ho_ctx_index, is_fail, vlib_get_thread_index (), - (ctx) ? ctx_index : ~0); - - ctx->tls_session_handle = session_handle (tls_session); - tls_session->opaque = ctx_index; - tls_session->session_state = SESSION_STATE_READY; - - return tls_ctx_init_client (ctx); -} - -/* *INDENT-OFF* */ -static session_cb_vft_t tls_app_cb_vft = { - .session_accept_callback = tls_session_accept_callback, - .session_disconnect_callback = tls_session_disconnect_callback, - .session_connected_callback = tls_session_connected_callback, - .session_reset_callback = tls_session_reset_callback, - .add_segment_callback = tls_add_segment_callback, - .del_segment_callback = tls_del_segment_callback, - .builtin_app_rx_callback = tls_app_rx_callback, - .builtin_app_tx_callback = tls_app_tx_callback, -}; -/* *INDENT-ON* */ - -int -tls_connect (transport_endpoint_t * tep) -{ - session_endpoint_extended_t *sep; - session_endpoint_t tls_sep; - tls_main_t *tm = &tls_main; - application_t *app; - tls_ctx_t *ctx; - u32 ctx_index; - int rv; - - sep = (session_endpoint_extended_t *) tep; - - ctx_index = tls_ctx_half_open_alloc (); - ctx = tls_ctx_half_open_get (ctx_index); - ctx->parent_app_index = sep->app_index; - ctx->parent_app_api_context = sep->opaque; - ctx->tcp_is_ip4 = sep->is_ip4; - if (sep->hostname) - { - ctx->srv_hostname = format (0, "%v", sep->hostname); - vec_terminate_c_string (ctx->srv_hostname); - } - tls_ctx_half_open_reader_unlock (); - - app = application_get (sep->app_index); - application_alloc_connects_segment_manager (app); - - clib_memcpy (&tls_sep, sep, sizeof (tls_sep)); - tls_sep.transport_proto = TRANSPORT_PROTO_TCP; - if ((rv = application_connect (tm->app_index, ctx_index, &tls_sep))) - return rv; - - TLS_DBG (1, "New connect request %u", ctx_index); - return 0; -} - -void -tls_disconnect (u32 ctx_index, u32 thread_index) -{ - stream_session_t *tls_session, *app_session; - tls_ctx_t *ctx; - - TLS_DBG (1, "Disconnecting %u", ctx_index); - - ctx = tls_ctx_get (ctx_index); - if (ctx->ssl.state == MBEDTLS_SSL_HANDSHAKE_OVER && !ctx->is_passive_close) - mbedtls_ssl_close_notify (&ctx->ssl); - - tls_session = session_get_from_handle (ctx->tls_session_handle); - stream_session_disconnect (tls_session); - - app_session = session_get_from_handle_if_valid (ctx->app_session_handle); - if (app_session) - { - segment_manager_dealloc_fifos (app_session->svm_segment_index, - app_session->server_rx_fifo, - app_session->server_tx_fifo); - session_free (app_session); - } - if (ctx->ssl.conf->endpoint == MBEDTLS_SSL_IS_SERVER) - { - mbedtls_x509_crt_free (&ctx->srvcert); - mbedtls_pk_free (&ctx->pkey); - } - mbedtls_ssl_free (&ctx->ssl); - mbedtls_ssl_config_free (&ctx->conf); - tls_ctx_free (ctx); -} - -u32 -tls_start_listen (u32 app_listener_index, transport_endpoint_t * tep) -{ - tls_main_t *tm = &tls_main; - application_t *tls_app; - session_handle_t tls_handle; - session_endpoint_extended_t *sep; - stream_session_t *tls_listener; - tls_ctx_t *lctx; - u32 lctx_index; - session_type_t st; - stream_session_t *app_listener; - - sep = (session_endpoint_extended_t *) tep; - lctx_index = tls_listener_ctx_alloc (); - lctx = tls_listener_ctx_get (lctx_index); - st = session_type_from_proto_and_ip (sep->transport_proto, sep->is_ip4); - app_listener = listen_session_get (st, app_listener_index); - - tls_app = application_get (tm->app_index); - sep->transport_proto = TRANSPORT_PROTO_TCP; - if (application_start_listen (tls_app, (session_endpoint_t *) sep, - &tls_handle)) - return ~0; - - tls_listener = listen_session_get_from_handle (tls_handle); - tls_listener->opaque = lctx_index; - lctx->parent_app_index = sep->app_index; - lctx->tls_session_handle = tls_handle; - lctx->app_session_handle = listen_session_get_handle (app_listener); - lctx->tcp_is_ip4 = sep->is_ip4; - return lctx_index; -} - -u32 -tls_stop_listen (u32 lctx_index) -{ - tls_main_t *tm = &tls_main; - application_t *tls_app; - tls_ctx_t *lctx; - lctx = tls_listener_ctx_get (lctx_index); - tls_app = application_get (tm->app_index); - application_stop_listen (tls_app, lctx->tls_session_handle); - tls_listener_ctx_free (lctx); - return 0; -} - -transport_connection_t * -tls_connection_get (u32 ctx_index, u32 thread_index) -{ - tls_ctx_t *ctx; - ctx = tls_ctx_get_w_thread (ctx_index, thread_index); - return &ctx->connection; -} - -transport_connection_t * -tls_listener_get (u32 listener_index) -{ - tls_ctx_t *ctx; - ctx = tls_listener_ctx_get (listener_index); - return &ctx->connection; -} - -u8 * -format_tls_ctx (u8 * s, va_list * args) -{ - tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *); - u32 thread_index = va_arg (*args, u32); - u32 child_si, child_ti; - - session_parse_handle (ctx->tls_session_handle, &child_si, &child_ti); - if (thread_index != child_ti) - clib_warning ("app and tls sessions are on different threads!"); - - s = format (s, "[#%d][TLS] app %u child %u", child_ti, - ctx->parent_app_index, child_si); - return s; -} - -u8 * -format_tls_connection (u8 * s, va_list * args) -{ - u32 ctx_index = va_arg (*args, u32); - u32 thread_index = va_arg (*args, u32); - u32 verbose = va_arg (*args, u32); - tls_ctx_t *ctx; - - ctx = tls_ctx_get_w_thread (ctx_index, thread_index); - if (!ctx) - return s; - - s = format (s, "%-50U", format_tls_ctx, ctx, thread_index); - if (verbose) - { - s = format (s, "%-15s", "state"); - if (verbose > 1) - s = format (s, "\n"); - } - return s; -} - -u8 * -format_tls_listener (u8 * s, va_list * args) -{ - u32 tc_index = va_arg (*args, u32); - tls_ctx_t *ctx = tls_listener_ctx_get (tc_index); - u32 listener_index, type; - - listen_session_parse_handle (ctx->tls_session_handle, &type, - &listener_index); - return format (s, "[TLS] listener app %u child %u", ctx->parent_app_index, - listener_index); -} - -u8 * -format_tls_half_open (u8 * s, va_list * args) -{ - u32 tc_index = va_arg (*args, u32); - tls_ctx_t *ctx = tls_ctx_half_open_get (tc_index); - s = format (s, "[TLS] half-open app %u", ctx->parent_app_index); - tls_ctx_half_open_reader_unlock (); - return s; -} - -/* *INDENT-OFF* */ -const static transport_proto_vft_t tls_proto = { - .open = tls_connect, - .close = tls_disconnect, - .bind = tls_start_listen, - .get_connection = tls_connection_get, - .get_listener = tls_listener_get, - .unbind = tls_stop_listen, - .tx_type = TRANSPORT_TX_INTERNAL, - .service_type = TRANSPORT_SERVICE_APP, - .format_connection = format_tls_connection, - .format_half_open = format_tls_half_open, - .format_listener = format_tls_listener, -}; -/* *INDENT-ON* */ - -int -tls_init_mem (void) -{ -#if TLS_USE_OUR_MEM_FUNCS - mbedtls_platform_set_calloc_free (mbedtls_calloc_fn, mbedtls_free_fn); -#endif - return 0; -} - -int -tls_init_ca_chain (void) -{ - tls_main_t *tm = &tls_main; - int rv; - - if (!tm->ca_cert_path) - tm->ca_cert_path = TLS_CA_CERT_PATH; - - if (access (tm->ca_cert_path, F_OK | R_OK) == -1) - { - clib_warning ("Could not initialize TLS CA certificates"); - return -1; - } - - mbedtls_x509_crt_init (&tm->cacert); - rv = mbedtls_x509_crt_parse_file (&tm->cacert, tm->ca_cert_path); - if (rv < 0) - { - clib_warning ("Couldn't parse system CA certificates: -0x%x", -rv); - } - if (tm->use_test_cert_in_ca) - { - rv = mbedtls_x509_crt_parse (&tm->cacert, - (const unsigned char *) test_srv_crt_rsa, - test_srv_crt_rsa_len); - if (rv < 0) - { - clib_warning ("Couldn't parse test certificate: -0x%x", -rv); - return -1; - } - } - return (rv < 0 ? -1 : 0); -} - -clib_error_t * -tls_init (vlib_main_t * vm) -{ - vlib_thread_main_t *vtm = vlib_get_thread_main (); - u32 fifo_size = 64 << 10, num_threads; - vnet_app_attach_args_t _a, *a = &_a; - u64 options[APP_OPTIONS_N_OPTIONS]; - u32 segment_size = 512 << 20; - tls_main_t *tm = &tls_main; - - num_threads = 1 /* main thread */ + vtm->n_threads; - - if (tls_init_mem ()) - { - clib_warning ("failed to initialize mem"); - return clib_error_return (0, "failed to initalize mem"); - } - if (tls_init_ca_chain ()) - { - clib_warning ("failed to initialize TLS CA chain"); - return clib_error_return (0, "failed to initalize TLS CA chain"); - } - if (tls_init_ctr_drbgs_and_entropy (num_threads)) - { - clib_warning ("failed to initialize entropy and random generators"); - return clib_error_return (0, "failed to initialize entropy and random " - "generators"); - } - - memset (a, 0, sizeof (*a)); - memset (options, 0, sizeof (options)); - - a->session_cb_vft = &tls_app_cb_vft; - a->api_client_index = (1 << 24) + 1; - a->options = options; - a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size; - a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size; - a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size; - a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN; - a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; - - if (vnet_application_attach (a)) - { - clib_warning ("failed to attach tls app"); - return clib_error_return (0, "failed to attach tls app"); - } - - tm->app_index = a->app_index; - vec_validate (tm->ctx_pool, num_threads - 1); - clib_rwlock_init (&tm->half_open_rwlock); - - transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto, - FIB_PROTOCOL_IP4, ~0); - transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto, - FIB_PROTOCOL_IP6, ~0); - - return 0; -} - -VLIB_INIT_FUNCTION (tls_init); - -static clib_error_t * -tls_config_fn (vlib_main_t * vm, unformat_input_t * input) -{ - tls_main_t *tm = &tls_main; - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "use-test-cert-in-ca")) - tm->use_test_cert_in_ca = 1; - else if (unformat (input, "ca-cert-path %s", &tm->ca_cert_path)) - ; - else - return clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - } - return 0; -} - -VLIB_EARLY_CONFIG_FUNCTION (tls_config_fn, "tls"); -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |