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/*
* Copyright (c) 2018-2019 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 <vnet/session/application.h>
#include <vnet/session/session.h>
#include <vppinfra/lock.h>
#ifndef SRC_VNET_TLS_TLS_H_
#define SRC_VNET_TLS_TLS_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_CA_CERT_PATH "/etc/ssl/certs/ca-certificates.crt"
#define TLS_INVALID_HANDLE ~0
#define TLS_IDX_MASK 0x00FFFFFF
#define TLS_ENGINE_TYPE_SHIFT 28
#if TLS_DEBUG
#define TLS_DBG(_lvl, _fmt, _args...) \
if (_lvl <= TLS_DEBUG) \
clib_warning (_fmt, ##_args)
#else
#define TLS_DBG(_lvl, _fmt, _args...)
#endif
typedef struct tls_cxt_id_
{
session_handle_t app_session_handle;
session_handle_t tls_session_handle;
void *migrate_ctx;
u32 parent_app_wrk_index;
u32 ssl_ctx;
union
{
u32 listener_ctx_index;
u32 parent_app_api_ctx;
};
u8 tcp_is_ip4;
u8 tls_engine_id;
} tls_ctx_id_t;
STATIC_ASSERT (sizeof (tls_ctx_id_t) <= TRANSPORT_CONN_ID_LEN,
"ctx id must be less than TRANSPORT_CONN_ID_LEN");
#define foreach_tls_conn_flags \
_ (HO_DONE, "ho-done") \
_ (PASSIVE_CLOSE, "passive-close") \
_ (APP_CLOSED, "app-closed") \
_ (MIGRATED, "migrated") \
_ (NO_APP_SESSION, "no-app-session") \
_ (RESUME, "resume") \
_ (HS_DONE, "handshake-done")
typedef enum tls_conn_flags_bit_
{
#define _(sym, str) TLS_CONN_F_BIT_##sym,
foreach_tls_conn_flags
#undef _
} tls_conn_flags_bit_t;
typedef enum tls_conn_flags_
{
#define _(sym, str) TLS_CONN_F_##sym = 1 << TLS_CONN_F_BIT_##sym,
foreach_tls_conn_flags
#undef _
} __clib_packed tls_conn_flags_t;
typedef struct tls_ctx_
{
union
{
transport_connection_t connection;
tls_ctx_id_t c_tls_ctx_id;
};
#define parent_app_wrk_index c_tls_ctx_id.parent_app_wrk_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_engine c_tls_ctx_id.tls_engine_id
#define tls_ssl_ctx c_tls_ctx_id.ssl_ctx
#define tls_ctx_handle c_c_index
/* Temporary storage for session open opaque. Overwritten once
* underlying tcp connection is established */
#define parent_app_api_context c_tls_ctx_id.parent_app_api_ctx
#define migration_ctx c_tls_ctx_id.migrate_ctx
u32 ts_app_index;
tls_conn_flags_t flags;
u8 *srv_hostname;
u32 evt_index;
u32 ckpair_index;
transport_proto_t tls_type;
} tls_ctx_t;
typedef struct tls_main_
{
u32 app_index;
tls_ctx_t *listener_ctx_pool;
tls_ctx_t *half_open_ctx_pool;
u32 *postponed_ho_free;
u32 *ho_free_list;
u8 **rx_bufs;
u8 **tx_bufs;
/*
* Config
*/
u8 use_test_cert_in_ca;
char *ca_cert_path;
u64 first_seg_size;
u64 add_seg_size;
u32 fifo_size;
} tls_main_t;
typedef struct tls_engine_vft_
{
u32 (*ctx_alloc) (void);
u32 (*ctx_alloc_w_thread) (u32 thread_index);
void (*ctx_free) (tls_ctx_t * ctx);
void *(*ctx_detach) (tls_ctx_t *ctx);
u32 (*ctx_attach) (u32 thread_index, void *ctx);
tls_ctx_t *(*ctx_get) (u32 ctx_index);
tls_ctx_t *(*ctx_get_w_thread) (u32 ctx_index, u8 thread_index);
int (*ctx_init_client) (tls_ctx_t * ctx);
int (*ctx_init_server) (tls_ctx_t * ctx);
int (*ctx_read) (tls_ctx_t * ctx, session_t * tls_session);
int (*ctx_write) (tls_ctx_t * ctx, session_t * app_session,
transport_send_params_t * sp);
u8 (*ctx_handshake_is_over) (tls_ctx_t * ctx);
int (*ctx_start_listen) (tls_ctx_t * ctx);
int (*ctx_stop_listen) (tls_ctx_t * ctx);
int (*ctx_transport_close) (tls_ctx_t * ctx);
int (*ctx_transport_reset) (tls_ctx_t *ctx);
int (*ctx_app_close) (tls_ctx_t * ctx);
int (*ctx_reinit_cachain) (void);
} tls_engine_vft_t;
extern tls_engine_vft_t *tls_vfts;
tls_main_t *vnet_tls_get_main (void);
void tls_register_engine (const tls_engine_vft_t * vft,
crypto_engine_type_t type);
int tls_add_vpp_q_rx_evt (session_t * s);
int tls_add_vpp_q_tx_evt (session_t * s);
int tls_add_vpp_q_builtin_tx_evt (session_t * s);
int tls_add_vpp_q_builtin_rx_evt (session_t * s);
int tls_notify_app_accept (tls_ctx_t * ctx);
int tls_notify_app_connected (tls_ctx_t * ctx, session_error_t err);
void tls_notify_app_enqueue (tls_ctx_t * ctx, session_t * app_session);
void tls_notify_app_io_error (tls_ctx_t *ctx);
void tls_disconnect_transport (tls_ctx_t * ctx);
void tls_add_postponed_ho_cleanups (u32 ho_index);
void tls_flush_postponed_ho_cleanups ();
#endif /* SRC_VNET_TLS_TLS_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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