tls: Add C API for TLS openssl to set engine

Type: feature

Parameters of the engine can be set by C API.
After this patch, it is easier to integrate TLS into CSIT test.

Change-Id: I063cabf613aabbfad831727551579328705afb41
Signed-off-by: Ping Yu <ping.yu@intel.com>

1 files changed, 128 insertions, 0 deletions

diff --git a/src/plugins/tlsopenssl/tls_openssl_api.c b/src/plugins/tlsopenssl/tls_openssl_api.c
new file mode 100644
index 00000000000..9474aae2faf
--- /dev/null
+++ b/src/plugins/tlsopenssl/tls_openssl_api.c
@@ -0,0 +1,128 @@
+/*
+ * 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/vnet.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+#include <tlsopenssl/tls_openssl.h>
+
+/* define message IDs */
+#include <tlsopenssl/tls_openssl_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <tlsopenssl/tls_openssl_all_api_h.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <tlsopenssl/tls_openssl_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <tlsopenssl/tls_openssl_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n, v) static u32 api_version = (v);
+#include <tlsopenssl/tls_openssl_all_api_h.h>
+#undef vl_api_version
+
+#define REPLY_MSG_ID_BASE om->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+/* List of message types that this plugin understands */
+
+#define foreach_tls_openssl_plugin_api_msg \
+  _ (TLS_OPENSSL_SET_ENGINE, tls_openssl_set_engine)
+
+extern openssl_main_t openssl_main;
+
+/* API message handler */
+static void
+vl_api_tls_openssl_set_engine_t_handler (vl_api_tls_openssl_set_engine_t *mp)
+{
+  vl_api_tls_openssl_set_engine_reply_t *rmp;
+  openssl_main_t *om = &openssl_main;
+  char *engine, *alg, *ciphers;
+  int rv;
+
+  engine = (char *)&mp->engine;
+  alg = (char *)&mp->algorithm;
+  ciphers = (char *)&mp->ciphers;
+
+  if (mp->async)
+    {
+      om->async = 1;
+      openssl_async_node_enable_disable (1);
+    }
+
+  if (ciphers[0])
+    tls_openssl_set_ciphers (ciphers);
+  rv = openssl_engine_register (engine, alg);
+
+  REPLY_MACRO (VL_API_TLS_OPENSSL_SET_ENGINE_REPLY);
+}
+
+/* Set up the API message handling tables */
+static clib_error_t *tls_openssl_plugin_api_hookup (vlib_main_t *vm)
+{
+  openssl_main_t *om = &openssl_main;
+#define _(N, n)                                                         \
+  vl_msg_api_set_handlers ((VL_API_##N + om->msg_id_base), #n,          \
+                           vl_api_##n##_t_handler, vl_noop_handler,     \
+                           vl_api_##n##_t_endian, vl_api_##n##_t_print, \
+                           sizeof (vl_api_##n##_t), 1);
+  foreach_tls_openssl_plugin_api_msg;
+#undef _
+
+  return 0;
+}
+
+#define vl_msg_name_crc_list
+#include <tlsopenssl/tls_openssl_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void setup_message_id_table (openssl_main_t *om, api_main_t *am)
+{
+#define _(id, n, crc) \
+  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + om->msg_id_base);
+  foreach_vl_msg_name_crc_tls_openssl;
+#undef _
+}
+
+clib_error_t *tls_openssl_api_init (vlib_main_t *vm)
+{
+  openssl_main_t *om = &openssl_main;
+  clib_error_t *error = 0;
+  u8 *name;
+
+  name = format (0, "tls_openssl_%08x%c", api_version, 0);
+
+  /* Ask for a correctly-sized block of API message decode slots */
+  om->msg_id_base =
+      vl_msg_api_get_msg_ids ((char *)name, VL_MSG_FIRST_AVAILABLE);
+
+  error = tls_openssl_plugin_api_hookup (vm);
+
+  /* Add our API messages to the global name_crc hash table */
+  setup_message_id_table (om, &api_main);
+  vec_free (name);
+
+  return error;
+}