Diff: TARGET_SDT51822B/TOOLCHAIN_IAR/security_dispatcher.h

Revision:

171:3a7713b1edbc

Parent:

169:a7c7b631e539

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_SDT51822B/TOOLCHAIN_IAR/security_dispatcher.h	Thu Nov 08 11:45:42 2018 +0000
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+/* 
+ * Copyright (c) 2015 Nordic Semiconductor ASA
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ *   1. Redistributions of source code must retain the above copyright notice, this list 
+ *      of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA 
+ *      integrated circuit in a product or a software update for such product, must reproduce 
+ *      the above copyright notice, this list of conditions and the following disclaimer in 
+ *      the documentation and/or other materials provided with the distribution.
+ *
+ *   3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be 
+ *      used to endorse or promote products derived from this software without specific prior 
+ *      written permission.
+ *
+ *   4. This software, with or without modification, must only be used with a 
+ *      Nordic Semiconductor ASA integrated circuit.
+ *
+ *   5. Any software provided in binary or object form under this license must not be reverse 
+ *      engineered, decompiled, modified and/or disassembled. 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+
+
+#ifndef SECURITY_DISPATCHER_H__
+#define SECURITY_DISPATCHER_H__
+
+#include <stdint.h>
+#include "sdk_errors.h"
+#include "nrf_ble.h"
+#include "nrf_ble_gap.h"
+#include "peer_manager_types.h"
+
+
+/**
+ * @cond NO_DOXYGEN
+ * @defgroup security_dispatcher Security Dispatcher
+ * @ingroup peer_manager
+ * @{
+ * @brief An internal module of @ref peer_manager. A module for streamlining pairing, bonding, and
+ *        encryption, including flash storage of shared data.
+ *
+ */
+
+
+/**@brief Events that can come from the Security Dispatcher module.
+ */
+typedef enum
+{
+    SMD_EVT_PARAMS_REQ,             /**< Parameters are required for a pairing procedure on the specified connection. The user must provide them using @ref smd_params_reply. */
+    SMD_EVT_SLAVE_SECURITY_REQ,     /**< The peer (slave) has requested link encryption. Call @ref smd_link_secure to honor the request. The data in the event structure must be used in the parameters. */
+    SMD_EVT_SEC_PROCEDURE_START,    /**< A security procedure has started. */
+    SMD_EVT_PAIRING_SUCCESS,        /**< A pairing procedure (and bonding if applicable) has completed with success. */
+    SMD_EVT_PAIRING_FAIL,           /**< A pairing procedure has failed which means no encryption and no bond could be established. */
+    SMD_EVT_LINK_ENCRYPTION_UPDATE, /**< The security level of the link has been updated. The link is encrypted. */
+    SMD_EVT_LINK_ENCRYPTION_FAILED, /**< An attempt to start encryption on an unencrypted link failed because the peripheral did not have the correct keys. If the peer is the peripheral, the force_repairing flag should be set when reattempting @ref smd_link_secure. */
+    SMD_EVT_BONDING_INFO_STORED,    /**< Information exchanged during bonding with a peer has been stored persistently. */
+    SMD_EVT_ERROR_BONDING_INFO,     /**< Information exchanged during bonding with a peer could not be stored persistently, because of an unexpected error. */
+    // SMD_EVT_ERROR_NO_MEM,           /**< An operation failed because there was no available storage room in persistent storage. Please free up room, and the operation will automatically continue. */
+    SMD_EVT_ERROR_UNEXPECTED,       /**< An operation failed with an unexpected error. The error is provided. This is possibly a fatal error. */
+} smd_evt_id_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_SLAVE_SECURITY_REQ event.
+ */
+typedef struct
+{
+    bool bond;
+    bool mitm;
+} smd_evt_slave_security_req_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_SEC_PROCEDURE_START event.
+ */
+typedef struct
+{
+    pm_conn_sec_procedure_t procedure; /**< The procedure that has started. */
+} smd_evt_sec_procedure_start_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_PAIRING_SUCCESS event.
+ */
+typedef struct
+{
+    bool                bonded;     /**< Whether bonding was performed. */
+    bool                mitm;       /**< Whether MITM protection was used during pairing. */
+    ble_gap_sec_kdist_t kdist_own;  /**< Which keys were distributed to the peer. Only relevant if bonding was performed. */
+    ble_gap_sec_kdist_t kdist_peer; /**< Which keys were distributed by the peer. Only relevant if bonding was performed. */
+} smd_evt_pairing_success_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_PAIRING_FAIL event.
+ */
+typedef struct
+{
+    pm_sec_error_code_t error;     /**< What went wrong. */
+    uint8_t             error_src; /**< The party that raised the error, see @ref BLE_GAP_SEC_STATUS_SOURCES. */
+} smd_evt_pairing_failed_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_LINK_ENCRYPTION_UPDATE event.
+ */
+typedef struct
+{
+    bool mitm_protected;  /**< Whether the link is now MITM protected. */
+} smd_evt_link_encryption_update_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_LINK_ENCRYPTION_FAILED event.
+ */
+typedef struct
+{
+    pm_sec_error_code_t error;     /**< What went wrong. */
+    uint8_t             error_src; /**< The party that raised the error, see @ref BLE_GAP_SEC_STATUS_SOURCES. */
+} smd_evt_link_encryption_failed_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_BONDING_INFO_STORED event.
+ */
+typedef struct
+{
+    pm_peer_id_t peer_id; /**< The peer this event pertains to. */
+} smd_evt_bonding_info_stored_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_ERROR_BONDING_INFO event.
+ */
+typedef struct
+{
+    pm_peer_id_t peer_id; /**< The peer this event pertains to, if previously bonded. @ref PM_PEER_ID_INVALID if no successful bonding has happened with the peer before. */
+    ret_code_t   error;   /**< The unexpected error that occurred. */
+} smd_evt_error_bonding_info_t;
+
+
+// typedef struct
+// {
+    // pm_peer_id_t peer_id; /**< The peer this event pertains to. */
+// } smd_evt_error_no_mem_t;
+
+
+/**@brief Events parameters specific to the @ref SMD_EVT_ERROR_UNEXPECTED event.
+ */
+typedef struct
+{
+    ret_code_t error; /**< The unexpected error that occurred. */
+} smd_evt_error_unexpected_t;
+
+
+typedef union
+{
+    smd_evt_slave_security_req_t     slave_security_req;
+    smd_evt_sec_procedure_start_t    sec_procedure_start;
+    smd_evt_pairing_success_t        pairing_success;
+    smd_evt_pairing_failed_t         pairing_failed;
+    smd_evt_link_encryption_update_t link_encryption_update;
+    smd_evt_link_encryption_failed_t link_encryption_failed;
+    smd_evt_bonding_info_stored_t    bonding_info_stored;
+    smd_evt_error_bonding_info_t     error_bonding_info;
+    //  smd_evt_error_no_mem_t          error_no_mem;
+    smd_evt_error_unexpected_t       error_unexpected;
+} smd_evt_params_t; /**< Event specific parameters. Chosen based on evt_id. */
+
+
+/**@brief Structure describing events from the Security Dispatcher module.
+ */
+typedef struct
+{
+    smd_evt_id_t evt_id;     /**< The type of event. */
+    uint16_t conn_handle;    /**< The connection this event pertains to. */
+    smd_evt_params_t params; /**< Event specific parameters. Chosen based on evt_id. */
+} smd_evt_t;
+
+
+
+/**@brief Event handler for events from the Security Dispatcher module.
+ *
+ * @param[in]  p_event  The event that has happened.
+ */
+typedef void (*smd_evt_handler_t)(smd_evt_t const * p_event);
+
+
+/**@brief Function for registering with the Security Dispatcher module. This function also
+ *        initializes the module if uninitialized.
+ *
+ * @param[in]  evt_handler  Callback for events from the Security Dispatcher module.
+ *
+ * @retval NRF_SUCCESS       Registration was successful.
+ * @retval NRF_ERROR_NO_MEM  No more registrations possible.
+ * @retval NRF_ERROR_NULL    evt_handler was NULL.
+ */
+ret_code_t smd_register(smd_evt_handler_t evt_handler);
+
+
+/**@brief Function for dispatching SoftDevice events to the Security Dispatcher module.
+ *
+ * @param[in]  ble_evt    The SoftDevice event.
+ */
+void smd_ble_evt_handler(ble_evt_t * ble_evt);
+
+
+/**@brief Function for providing pairing and bonding parameters to use for the current pairing
+ *        procedure on a connection.
+ *
+ * @note If this function returns an @ref NRF_ERROR_NULL, @ref NRF_ERROR_INVALID_PARAM, @ref
+ *       BLE_ERROR_INVALID_CONN_HANDLE, or @ref NRF_ERROR_NO_MEM, this function can be called again
+ *       after corrective action.
+ *
+ * @note To reject a request, call this function with NULL p_sec_params.
+ *
+ * @param[in]  conn_handle   The connection handle of the connection the pairing is happening on.
+ * @param[in]  p_sec_params  The security parameters to use for this link.
+ * @param[in]  p_public_key  A pointer to the public key to use if using LESC, or NULL.
+ *
+ * @retval NRF_SUCCESS                    Success.
+ * @retval NRF_ERROR_INVALID_STATE        Module is not initialized, or no parameters have been
+ *                                        requested on that conn_handle, or this error originates
+ *                                        from the SoftDevice.
+ * @retval NRF_ERROR_INVALID_PARAM        Invalid combination of parameters (not including conn_handle).
+ * @retval NRF_ERROR_TIMEOUT              There has been an SMP timeout, so no more SMP operations
+ *                                        can be performed on this link.
+ * @retval BLE_ERROR_INVALID_CONN_HANDLE  Invalid connection handle.
+ * @retval NRF_ERROR_NO_MEM               No more room in flash. Fix and reattempt later.
+ * @retval NRF_ERROR_BUSY                 No write buffer. Reattempt later.
+ */
+ret_code_t smd_params_reply(uint16_t                 conn_handle,
+                            ble_gap_sec_params_t   * p_sec_params,
+                            ble_gap_lesc_p256_pk_t * p_public_key);
+
+
+/**@brief Function for initiating security on the link, with the specified parameters.
+ *
+ * @note If the connection is a peripheral connection, this will send a security request to the
+ *       master, but the master is not obligated to initiate pairing or encryption in response.
+ * @note If the connection is a central connection and a key is available, the parameters will be
+ *       used to determine whether to re-pair or to encrypt using the existing key. If no key is
+ *       available, pairing will be started.
+ *
+ * @param[in]  conn_handle      Handle of the connection to initiate pairing on.
+ * @param[in]  p_sec_params     The security parameters to use for this link. As a central, this can
+ *                              be NULL to reject a slave security request.
+ * @param[in]  force_repairing  Whether to force a pairing procedure to happen regardless of whether
+ *                              an encryption key already exists. This argument is only relevant for
+ *                              the central role. Recommended value: false
+ *
+ * @retval NRF_SUCCESS                    Success.
+ * @retval NRF_ERROR_NULL                 p_sec_params was NULL (peripheral only).
+ * @retval NRF_ERROR_INVALID_STATE        Module is not initialized, or this error originates from
+ *                                        the SoftDevice.
+ * @retval NRF_ERROR_INVALID_PARAM        Invalid combination of parameters (not including conn_handle).
+ * @retval NRF_ERROR_BUSY                 Unable to initiate procedure at this time.
+ * @retval NRF_ERROR_TIMEOUT              There has been an SMP timeout, so no more SMP operations
+ *                                        can be performed on this link.
+ * @retval BLE_ERROR_INVALID_CONN_HANDLE  Invalid connection handle.
+ * @retval NRF_ERROR_NO_MEM               No more room in flash.
+ * @retval NRF_ERROR_INTERNAL             No more available peer IDs.
+ */
+ret_code_t smd_link_secure(uint16_t               conn_handle,
+                           ble_gap_sec_params_t * p_sec_params,
+                           bool                   force_repairing);
+
+/** @}
+ * @endcond
+ */
+
+#endif /* SECURITY_DISPATCHER_H__ */