session: Add certificate store

[vpp.git] / src / plugins / tlsopenssl / tls_openssl.c

diff --git a/src/plugins/tlsopenssl/tls_openssl.c b/src/plugins/tlsopenssl/tls_openssl.c
index 6cb8ff0..c383cf3 100644 (file)
--- a/src/plugins/tlsopenssl/tls_openssl.c
+++ b/src/plugins/tlsopenssl/tls_openssl.c
@@ -16,6 +16,7 @@
 #include <openssl/ssl.h>
 #include <openssl/conf.h>
 #include <openssl/err.h>
+
 #ifdef HAVE_OPENSSL_ASYNC
 #include <openssl/async.h>
 #endif
@@ -26,9 +27,9 @@
 #include <ctype.h>
 #include <tlsopenssl/tls_openssl.h>
 
-#define MAX_CRYPTO_LEN 16
+#define MAX_CRYPTO_LEN 64
 
-static openssl_main_t openssl_main;
+openssl_main_t openssl_main;
 static u32
 openssl_ctx_alloc (void)
 {
@@ -205,6 +206,28 @@ vpp_ssl_async_retry_func (tls_ctx_t * ctx, openssl_resume_handler * handler)
 
 #endif
 
+static void
+openssl_handle_handshake_failure (tls_ctx_t * ctx)
+{
+  if (SSL_is_server (((openssl_ctx_t *) ctx)->ssl))
+    {
+      /*
+       * Cleanup pre-allocated app session and close transport
+       */
+      session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
+      ctx->no_app_session = 1;
+      ctx->c_s_index = SESSION_INVALID_INDEX;
+      tls_disconnect_transport (ctx);
+    }
+  else
+    {
+      /*
+       * Also handles cleanup of the pre-allocated session
+       */
+      tls_notify_app_connected (ctx, /* is failed */ 1);
+    }
+}
+
 int
 openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
 {
@@ -233,6 +256,17 @@ openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
 
       rv = SSL_do_handshake (oc->ssl);
       err = SSL_get_error (oc->ssl, rv);
+
+      if (err == SSL_ERROR_SSL)
+       {
+         char buf[512];
+         ERR_error_string (ERR_get_error (), buf);
+         clib_warning ("Err: %s", buf);
+
+         openssl_handle_handshake_failure (ctx);
+         return -1;
+       }
+
       openssl_try_handshake_write (oc, tls_session);
 #ifdef HAVE_OPENSSL_ASYNC
       if (err == SSL_ERROR_WANT_ASYNC)
@@ -247,15 +281,7 @@ openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
 #endif
 
       if (err != SSL_ERROR_WANT_WRITE)
-       {
-         if (err == SSL_ERROR_SSL)
-           {
-             char buf[512];
-             ERR_error_string (ERR_get_error (), buf);
-             clib_warning ("Err: %s", buf);
-           }
-         break;
-       }
+       break;
     }
   TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
           SSL_state_string_long (oc->ssl));
@@ -297,6 +323,13 @@ openssl_ctx_handshake_rx (tls_ctx_t * ctx, session_t * tls_session)
   return rv;
 }
 
+static void
+openssl_confirm_app_close (tls_ctx_t * ctx)
+{
+  tls_disconnect_transport (ctx);
+  session_transport_closed_notify (&ctx->connection);
+}
+
 static inline int
 openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session)
 {
@@ -374,6 +407,8 @@ check_tls_fifo:
 
   if (BIO_ctrl_pending (oc->rbio) > 0)
     tls_add_vpp_q_builtin_tx_evt (app_session);
+  else if (ctx->app_closed)
+    openssl_confirm_app_close (ctx);
 
   return wrote;
 }
@@ -557,7 +592,6 @@ openssl_ctx_init_client (tls_ctx_t * ctx)
 static int
 openssl_start_listen (tls_ctx_t * lctx)
 {
-  application_t *app;
   const SSL_METHOD *method;
   SSL_CTX *ssl_ctx;
   int rv;
@@ -566,17 +600,16 @@ openssl_start_listen (tls_ctx_t * lctx)
   EVP_PKEY *pkey;
   u32 olc_index;
   openssl_listen_ctx_t *olc;
-  app_worker_t *app_wrk;
+  app_cert_key_pair_t *ckpair;
 
   long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
   openssl_main_t *om = &openssl_main;
 
-  app_wrk = app_worker_get (lctx->parent_app_wrk_index);
-  if (!app_wrk)
+  ckpair = app_cert_key_pair_get_if_valid (lctx->ckpair_index);
+  if (!ckpair)
     return -1;
 
-  app = application_get (app_wrk->app_index);
-  if (!app->tls_cert || !app->tls_key)
+  if (!ckpair->cert || !ckpair->key)
     {
       TLS_DBG (1, "tls cert and/or key not configured %d",
               lctx->parent_app_wrk_index);
@@ -611,7 +644,7 @@ openssl_start_listen (tls_ctx_t * lctx)
    * Set the key and cert
    */
   cert_bio = BIO_new (BIO_s_mem ());
-  BIO_write (cert_bio, app->tls_cert, vec_len (app->tls_cert));
+  BIO_write (cert_bio, ckpair->cert, vec_len (ckpair->cert));
   srvcert = PEM_read_bio_X509 (cert_bio, NULL, NULL, NULL);
   if (!srvcert)
     {
@@ -622,7 +655,7 @@ openssl_start_listen (tls_ctx_t * lctx)
   BIO_free (cert_bio);
 
   cert_bio = BIO_new (BIO_s_mem ());
-  BIO_write (cert_bio, app->tls_key, vec_len (app->tls_key));
+  BIO_write (cert_bio, ckpair->key, vec_len (ckpair->key));
   pkey = PEM_read_bio_PrivateKey (cert_bio, NULL, NULL, NULL);
   if (!pkey)
     {
@@ -734,7 +767,7 @@ openssl_transport_close (tls_ctx_t * ctx)
 {
   if (!openssl_handshake_is_over (ctx))
     {
-      session_close (session_get_from_handle (ctx->tls_session_handle));
+      openssl_handle_handshake_failure (ctx);
       return 0;
     }
   session_transport_closing_notify (&ctx->connection);
@@ -744,9 +777,16 @@ openssl_transport_close (tls_ctx_t * ctx)
 static int
 openssl_app_close (tls_ctx_t * ctx)
 {
-  tls_disconnect_transport (ctx);
-  session_transport_delete_notify (&ctx->connection);
-  openssl_ctx_free (ctx);
+  openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
+  session_t *app_session;
+
+  /* Wait for all data to be written to tcp */
+  app_session = session_get_from_handle (ctx->app_session_handle);
+  if (BIO_ctrl_pending (oc->rbio) <= 0
+      && !svm_fifo_max_dequeue_cons (app_session->tx_fifo))
+    openssl_confirm_app_close (ctx);
+  else
+    ctx->app_closed = 1;
   return 0;
 }
 
@@ -809,7 +849,7 @@ tls_init_ca_chain (void)
   return (rv < 0 ? -1 : 0);
 }
 
-static int
+int
 tls_openssl_set_ciphers (char *ciphers)
 {
   openssl_main_t *om = &openssl_main;
@@ -835,8 +875,10 @@ tls_openssl_init (vlib_main_t * vm)
 {
   vlib_thread_main_t *vtm = vlib_get_thread_main ();
   openssl_main_t *om = &openssl_main;
+  clib_error_t *error = 0;
   u32 num_threads;
 
+  error = tls_openssl_api_init (vm);
   num_threads = 1 /* main thread */  + vtm->n_threads;
 
   SSL_library_init ();
@@ -858,7 +900,7 @@ tls_openssl_init (vlib_main_t * vm)
   tls_openssl_set_ciphers
     ("ALL:!ADH:!LOW:!EXP:!MD5:!RC4-SHA:!DES-CBC3-SHA:@STRENGTH");
 
-  return 0;
+  return error;
 }
 /* *INDENT-OFF* */
 VLIB_INIT_FUNCTION (tls_openssl_init) =
@@ -920,7 +962,7 @@ tls_openssl_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
     }
   else
     {
-      if (!openssl_engine_register (engine_name, engine_alg))
+      if (openssl_engine_register (engine_name, engine_alg) < 0)
        {
          return clib_error_return (0, "failed to register %s polling",
                                    engine_name);