IKEv2 to plugin

for easy integration with ptoducts running their own Ike stack.
Without the VPP IKE plugin loaded, the product is free to handle
IKE packets as it pleases.

Change-Id: Id0839f4d58b797f4c2da0382eb499fc08b05f66f
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 468 insertions, 0 deletions

diff --git a/src/plugins/ikev2/ikev2_api.c b/src/plugins/ikev2/ikev2_api.c
new file mode 100644
index 00000000000..ace28c5aa20
--- /dev/null
+++ b/src/plugins/ikev2/ikev2_api.c
@@ -0,0 +1,468 @@
+/*
+ *------------------------------------------------------------------
+ * ipsec_api.c - ipsec api
+ *
+ * Copyright (c) 2016 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 <vlibmemory/api.h>
+#include <vnet/api_errno.h>
+#include <vpp/app/version.h>
+
+#include <ikev2/ikev2.h>
+#include <ikev2/ikev2_priv.h>
+
+/* define message IDs */
+#include <plugins/ikev2/ikev2_msg_enum.h>
+
+#define vl_typedefs		/* define message structures */
+#include <ikev2/ikev2.api.h>
+#undef vl_typedefs
+
+#define vl_endianfun		/* define message structures */
+#include <ikev2/ikev2.api.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 <ikev2/ikev2.api.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <ikev2/ikev2.api.h>
+#undef vl_api_version
+
+extern ikev2_main_t ikev2_main;
+
+#define IKEV2_PLUGIN_VERSION_MAJOR 1
+#define IKEV2_PLUGIN_VERSION_MINOR 0
+#define REPLY_MSG_ID_BASE ikev2_main.msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_ikev2_api_msg                                   \
+_(IKEV2_PLUGIN_GET_VERSION, ikev2_plugin_get_version)           \
+_(IKEV2_PROFILE_ADD_DEL, ikev2_profile_add_del)                 \
+_(IKEV2_PROFILE_SET_AUTH, ikev2_profile_set_auth)               \
+_(IKEV2_PROFILE_SET_ID, ikev2_profile_set_id)                   \
+_(IKEV2_PROFILE_SET_TS, ikev2_profile_set_ts)                   \
+_(IKEV2_SET_LOCAL_KEY, ikev2_set_local_key)                     \
+_(IKEV2_SET_RESPONDER, ikev2_set_responder)                     \
+_(IKEV2_SET_IKE_TRANSFORMS, ikev2_set_ike_transforms)           \
+_(IKEV2_SET_ESP_TRANSFORMS, ikev2_set_esp_transforms)           \
+_(IKEV2_SET_SA_LIFETIME, ikev2_set_sa_lifetime)                 \
+_(IKEV2_INITIATE_SA_INIT, ikev2_initiate_sa_init)               \
+_(IKEV2_INITIATE_DEL_IKE_SA, ikev2_initiate_del_ike_sa)         \
+_(IKEV2_INITIATE_DEL_CHILD_SA, ikev2_initiate_del_child_sa)     \
+_(IKEV2_INITIATE_REKEY_CHILD_SA, ikev2_initiate_rekey_child_sa)
+
+static void
+vl_api_ikev2_plugin_get_version_t_handler (vl_api_ikev2_plugin_get_version_t *
+					   mp)
+{
+  ikev2_main_t *im = &ikev2_main;
+  vl_api_ikev2_plugin_get_version_reply_t *rmp;
+  int msg_size = sizeof (*rmp);
+  vl_api_registration_t *reg;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  rmp = vl_msg_api_alloc (msg_size);
+  clib_memset (rmp, 0, msg_size);
+  rmp->_vl_msg_id =
+    ntohs (VL_API_IKEV2_PLUGIN_GET_VERSION_REPLY + im->msg_id_base);
+  rmp->context = mp->context;
+  rmp->major = htonl (IKEV2_PLUGIN_VERSION_MAJOR);
+  rmp->minor = htonl (IKEV2_PLUGIN_VERSION_MINOR);
+
+  vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_ikev2_profile_add_del_t_handler (vl_api_ikev2_profile_add_del_t * mp)
+{
+  vl_api_ikev2_profile_add_del_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+  u8 *tmp = format (0, "%s", mp->name);
+  error = ikev2_add_del_profile (vm, tmp, mp->is_add);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_PROFILE_ADD_DEL_REPLY);
+}
+
+static void
+  vl_api_ikev2_profile_set_auth_t_handler
+  (vl_api_ikev2_profile_set_auth_t * mp)
+{
+  vl_api_ikev2_profile_set_auth_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+  int data_len = ntohl (mp->data_len);
+  u8 *tmp = format (0, "%s", mp->name);
+  u8 *data = vec_new (u8, data_len);
+  clib_memcpy (data, mp->data, data_len);
+  error = ikev2_set_profile_auth (vm, tmp, mp->auth_method, data, mp->is_hex);
+  vec_free (tmp);
+  vec_free (data);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_AUTH_REPLY);
+}
+
+static void
+vl_api_ikev2_profile_set_id_t_handler (vl_api_ikev2_profile_set_id_t * mp)
+{
+  vl_api_ikev2_profile_add_del_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+  u8 *tmp = format (0, "%s", mp->name);
+  int data_len = ntohl (mp->data_len);
+  u8 *data = vec_new (u8, data_len);
+  clib_memcpy (data, mp->data, data_len);
+  error = ikev2_set_profile_id (vm, tmp, mp->id_type, data, mp->is_local);
+  vec_free (tmp);
+  vec_free (data);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_ID_REPLY);
+}
+
+static void
+vl_api_ikev2_profile_set_ts_t_handler (vl_api_ikev2_profile_set_ts_t * mp)
+{
+  vl_api_ikev2_profile_set_ts_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+  u8 *tmp = format (0, "%s", mp->name);
+  error = ikev2_set_profile_ts (vm, tmp, mp->proto, mp->start_port,
+				mp->end_port, (ip4_address_t) mp->start_addr,
+				(ip4_address_t) mp->end_addr, mp->is_local);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_TS_REPLY);
+}
+
+static void
+vl_api_ikev2_set_local_key_t_handler (vl_api_ikev2_set_local_key_t * mp)
+{
+  vl_api_ikev2_profile_set_ts_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  error = ikev2_set_local_key (vm, mp->key_file);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_SET_LOCAL_KEY_REPLY);
+}
+
+static void
+vl_api_ikev2_set_responder_t_handler (vl_api_ikev2_set_responder_t * mp)
+{
+  vl_api_ikev2_set_responder_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  u8 *tmp = format (0, "%s", mp->name);
+  ip4_address_t ip4;
+  clib_memcpy (&ip4, mp->address, sizeof (ip4));
+
+  error = ikev2_set_profile_responder (vm, tmp, mp->sw_if_index, ip4);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_SET_RESPONDER_REPLY);
+}
+
+static void
+vl_api_ikev2_set_ike_transforms_t_handler (vl_api_ikev2_set_ike_transforms_t *
+					   mp)
+{
+  vl_api_ikev2_set_ike_transforms_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  u8 *tmp = format (0, "%s", mp->name);
+
+  error =
+    ikev2_set_profile_ike_transforms (vm, tmp, mp->crypto_alg, mp->integ_alg,
+				      mp->dh_group, mp->crypto_key_size);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_SET_IKE_TRANSFORMS_REPLY);
+}
+
+static void
+vl_api_ikev2_set_esp_transforms_t_handler (vl_api_ikev2_set_esp_transforms_t *
+					   mp)
+{
+  vl_api_ikev2_set_esp_transforms_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  u8 *tmp = format (0, "%s", mp->name);
+
+  error =
+    ikev2_set_profile_esp_transforms (vm, tmp, mp->crypto_alg, mp->integ_alg,
+				      mp->dh_group, mp->crypto_key_size);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_SET_ESP_TRANSFORMS_REPLY);
+}
+
+static void
+vl_api_ikev2_set_sa_lifetime_t_handler (vl_api_ikev2_set_sa_lifetime_t * mp)
+{
+  vl_api_ikev2_set_sa_lifetime_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  u8 *tmp = format (0, "%s", mp->name);
+
+  error =
+    ikev2_set_profile_sa_lifetime (vm, tmp, mp->lifetime, mp->lifetime_jitter,
+				   mp->handover, mp->lifetime_maxdata);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_SET_SA_LIFETIME_REPLY);
+}
+
+static void
+vl_api_ikev2_initiate_sa_init_t_handler (vl_api_ikev2_initiate_sa_init_t * mp)
+{
+  vl_api_ikev2_initiate_sa_init_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  u8 *tmp = format (0, "%s", mp->name);
+
+  error = ikev2_initiate_sa_init (vm, tmp);
+  vec_free (tmp);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_INITIATE_SA_INIT_REPLY);
+}
+
+static void
+vl_api_ikev2_initiate_del_ike_sa_t_handler (vl_api_ikev2_initiate_del_ike_sa_t
+					    * mp)
+{
+  vl_api_ikev2_initiate_del_ike_sa_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  error = ikev2_initiate_delete_ike_sa (vm, mp->ispi);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_INITIATE_DEL_IKE_SA_REPLY);
+}
+
+static void
+  vl_api_ikev2_initiate_del_child_sa_t_handler
+  (vl_api_ikev2_initiate_del_child_sa_t * mp)
+{
+  vl_api_ikev2_initiate_del_child_sa_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  error = ikev2_initiate_delete_child_sa (vm, mp->ispi);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_INITIATE_DEL_CHILD_SA_REPLY);
+}
+
+static void
+  vl_api_ikev2_initiate_rekey_child_sa_t_handler
+  (vl_api_ikev2_initiate_rekey_child_sa_t * mp)
+{
+  vl_api_ikev2_initiate_rekey_child_sa_reply_t *rmp;
+  int rv = 0;
+
+#if WITH_LIBSSL > 0
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error;
+
+  error = ikev2_initiate_rekey_child_sa (vm, mp->ispi);
+  if (error)
+    rv = VNET_API_ERROR_UNSPECIFIED;
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  REPLY_MACRO (VL_API_IKEV2_INITIATE_REKEY_CHILD_SA_REPLY);
+}
+
+/*
+ * ikev2_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has already mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+#define vl_msg_name_crc_list
+#include <ikev2/ikev2.api.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (ikev2_main_t * im, api_main_t * am)
+{
+#define _(id,n,crc) \
+  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + im->msg_id_base);
+  foreach_vl_msg_name_crc_ikev2;
+#undef _
+}
+
+static clib_error_t *
+ikev2_plugin_api_hookup (vlib_main_t * vm)
+{
+  ikev2_main_t *im = &ikev2_main;
+#define _(N,n)                                                  \
+  vl_msg_api_set_handlers(VL_API_##N + im->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_ikev2_api_msg;
+#undef _
+
+  return (NULL);
+}
+
+static clib_error_t *
+ikev2_api_init (vlib_main_t * vm)
+{
+  ikev2_main_t *im = &ikev2_main;
+  clib_error_t *error = 0;
+  u8 *name;
+
+  name = format (0, "ikev2_%08x%c", api_version, 0);
+
+  /* Ask for a correctly-sized block of API message decode slots */
+  im->msg_id_base = vl_msg_api_get_msg_ids ((char *) name,
+					    VL_MSG_FIRST_AVAILABLE);
+
+  error = ikev2_plugin_api_hookup (vm);
+
+  /* Add our API messages to the global name_crc hash table */
+  setup_message_id_table (im, &api_main);
+
+  vec_free (name);
+
+  return (error);
+}
+
+VLIB_INIT_FUNCTION (ikev2_api_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */