R1 code for micro:bit based train controller code, requires second micro:bit running rx code to operate - see https://meanderingpi.wordpress.com/ for more information
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id_manager.h
00001 /* 00002 * Copyright (c) Nordic Semiconductor ASA 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without modification, 00006 * are permitted provided that the following conditions are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright notice, this 00009 * list of conditions and the following disclaimer. 00010 * 00011 * 2. Redistributions in binary form must reproduce the above copyright notice, this 00012 * list of conditions and the following disclaimer in the documentation and/or 00013 * other materials provided with the distribution. 00014 * 00015 * 3. Neither the name of Nordic Semiconductor ASA nor the names of other 00016 * contributors to this software may be used to endorse or promote products 00017 * derived from this software without specific prior written permission. 00018 * 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 00021 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 00022 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00023 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00024 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00025 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00026 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 00027 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00028 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00029 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 * 00031 */ 00032 00033 #ifndef PEER_ID_MANAGER_H__ 00034 #define PEER_ID_MANAGER_H__ 00035 00036 #include "stdint.h" 00037 #include "sdk_errors.h " 00038 #include "ble.h" 00039 #include "ble_gap.h" 00040 #include "peer_manager_types.h " 00041 00042 00043 /** 00044 * @defgroup id_manager ID Manager 00045 * @ingroup peer_manager 00046 * @{ 00047 * @brief An internal module of @ref peer_manager. A module for keeping track of peer identities 00048 * (IRK and peer address). 00049 */ 00050 00051 00052 /**@brief Events that can come from the ID Manager module. 00053 */ 00054 typedef enum 00055 { 00056 IM_EVT_DUPLICATE_ID, /**< The ID Manager module has detected that two stored peers represent the same peer. */ 00057 IM_EVT_BONDED_PEER_CONNECTED, /**< A connected peer has been identified as one of the bonded peers. This can happen immediately on connection, or at a later time. */ 00058 } im_evt_id_t; 00059 00060 00061 typedef struct 00062 { 00063 im_evt_id_t evt_id; 00064 uint16_t conn_handle; 00065 union 00066 { 00067 struct 00068 { 00069 pm_peer_id_t peer_id_1; 00070 pm_peer_id_t peer_id_2; 00071 } duplicate_id; 00072 } params; 00073 } im_evt_t; 00074 00075 00076 /**@brief Event handler for events from the ID Manager module. 00077 * 00078 * @param[in] p_event The event that has happened. 00079 */ 00080 typedef void (*im_evt_handler_t)(im_evt_t const * p_event); 00081 00082 /**@brief Function for registering for events from the ID Manager module. 00083 * 00084 * @note This will also initialize the module if needed. 00085 * 00086 * @param[in] evt_handler Callback for events from the ID Manager module. 00087 * 00088 * @retval NRF_SUCCESS Registration was successful. 00089 * @retval NRF_ERROR_NO_MEM No more registrations possible. 00090 * @retval NRF_ERROR_NULL evt_handler was NULL. 00091 */ 00092 ret_code_t im_register(im_evt_handler_t evt_handler); 00093 00094 00095 /**@brief Function for dispatching SoftDevice events to the ID Manager module. 00096 * 00097 * @param[in] p_ble_evt The SoftDevice event. 00098 */ 00099 void im_ble_evt_handler(ble_evt_t * p_ble_evt); 00100 00101 00102 /**@brief Function for getting the corresponding peer ID from a connection handle. 00103 * 00104 * @param[in] conn_handle The connection handle. 00105 * 00106 * @return The corresponding peer ID, or @ref PM_PEER_ID_INVALID if none could be resolved. 00107 */ 00108 pm_peer_id_t im_peer_id_get_by_conn_handle(uint16_t conn_handle); 00109 00110 00111 /**@brief Function for getting the corresponding peer ID from a master ID (EDIV and rand). 00112 * 00113 * @param[in] p_master_id The master ID. 00114 * 00115 * @return The corresponding peer ID, or @ref PM_PEER_ID_INVALID if none could be resolved. 00116 */ 00117 pm_peer_id_t im_peer_id_get_by_master_id(ble_gap_master_id_t * p_master_id); 00118 00119 00120 /**@brief Function for getting the corresponding peer ID from an IRK match index, see @ref 00121 * ble_gap_evt_connected_t. 00122 * 00123 * @param[in] irk_match_idx The IRK match index. 00124 * 00125 * @return The corresponding peer ID, or @ref PM_PEER_ID_INVALID if none could be resolved. 00126 */ 00127 pm_peer_id_t im_peer_id_get_by_irk_match_idx(uint8_t irk_match_idx); 00128 00129 00130 /**@brief Function for getting the corresponding connection handle from a peer ID. 00131 * 00132 * @param[in] peer_id The peer ID. 00133 * 00134 * @return The corresponding connection handle, or @ref BLE_CONN_HANDLE_INVALID if none could be 00135 * resolved. 00136 */ 00137 uint16_t im_conn_handle_get(pm_peer_id_t peer_id); 00138 00139 00140 /**@brief Function for getting the BLE address used by the peer when connecting. 00141 * 00142 * @param[in] conn_handle The connection handle. 00143 * @param[out] p_ble_addr The BLE address used by the peer when the connection specified by 00144 * conn_handle was established. 00145 * 00146 * @retval NRF_SUCCESS The address was found and copied. 00147 * @retval NRF_ERROR_INVALID_STATE Module not initialized. 00148 * @retval BLE_ERROR_CONN_HANDLE_INVALID conn_handle does not refer to an active connection. 00149 * @retval NRF_ERROR_NULL p_ble_addr was NULL. 00150 */ 00151 ret_code_t im_ble_addr_get(uint16_t conn_handle, ble_gap_addr_t * p_ble_addr); 00152 00153 00154 /**@brief Function for checking whether a master ID is valid or invalid 00155 * 00156 * @param[in] p_master_id The master ID. 00157 * 00158 * @retval true The master id is valid. 00159 * @retval true The master id is invalid (i.e. all zeros). 00160 */ 00161 bool im_master_id_is_valid(ble_gap_master_id_t const * p_master_id); 00162 00163 00164 /**@brief Function for reporting that a new peer ID has been allocated for a specified connection. 00165 * 00166 * @param[in] conn_handle The connection. 00167 * @param[in] peer_id The new peer ID. 00168 */ 00169 void im_new_peer_id(uint16_t conn_handle, pm_peer_id_t peer_id); 00170 00171 00172 /** 00173 * @brief Function for informing this module of what whitelist will be used. 00174 * 00175 * @details This function is meant to be used when the app wants to use a custom whitelist. 00176 * When using peer manager, this function must be used if a custom whitelist is used. 00177 * 00178 * @note When using a whitelist, always use the whitelist created/set by the most recent 00179 * call to @ref im_wlist_create or to this function, whichever happened most recently. 00180 * @note Do not call this function while scanning with another whitelist. 00181 * @note Do not add any irks to the whitelist that are not present in the bonding data of a peer in 00182 * the peer database. 00183 * 00184 * @param[in] p_whitelist The whitelist. 00185 * 00186 * @retval NRF_SUCCESS Whitelist successfully set. 00187 * @retval NRF_ERROR_NULL p_whitelist was NULL. 00188 * @retval NRF_ERROR_NOT_FOUND One or more of the whitelists irks was not found in the peer_database. 00189 */ 00190 ret_code_t im_wlist_set(ble_gap_whitelist_t * p_whitelist); 00191 00192 00193 /** 00194 * @brief Function for constructing a whitelist for use when advertising. 00195 * 00196 * @note When advertising with whitelist, always use the whitelist created/set by the most recent 00197 * call to this function or to @ref im_wlist_set, whichever happened most recently. 00198 * @note Do not call this function while advertising with another whitelist. 00199 * 00200 * @param[in] p_peer_ids The ids of the peers to be added to the whitelist. 00201 * @param[in] n_peer_ids The number of peer ids in p_peer_ids. 00202 * @param[in,out] p_whitelist The constructed whitelist. Note that p_adv_whitelist->pp_addrs 00203 * must be NULL or point to an array with size @ref 00204 * BLE_GAP_WHITELIST_ADDR_MAX_COUNT and p_adv_whitelist->pp_irks 00205 * must be NULL or point to an array with size @ref 00206 * BLE_GAP_WHITELIST_IRK_MAX_COUNT. 00207 * 00208 * @retval NRF_SUCCESS Whitelist successfully created. 00209 * @retval NRF_ERROR_NULL p_whitelist was NULL. 00210 */ 00211 ret_code_t im_wlist_create(pm_peer_id_t * p_peer_ids, 00212 uint8_t n_peer_ids, 00213 ble_gap_whitelist_t * p_whitelist); 00214 00215 /** 00216 * @brief Function for resolving a resolvable address with an identity resolution key (IRK). 00217 * 00218 * @details This function will use the ECB peripheral to resolve a resolvable address. 00219 * This can be used to resolve the identity of a device distributing a random 00220 * resolvable address based on any IRKs you have received earlier. If an address is 00221 * resolved by an IRK, the device disributing the address must also know the IRK. 00222 * 00223 * @param[in] p_addr A random resolvable address. 00224 * @param[in] p_irk An identity resolution key (IRK). 00225 * 00226 * @retval true The irk used matched the one used to create the address. 00227 * @retval false The irk used did not match the one used to create the address, or an argument was 00228 * NULL. 00229 */ 00230 bool im_address_resolve(ble_gap_addr_t const * p_addr, ble_gap_irk_t const * p_irk); 00231 00232 /**@brief Function for calculating the ah() hash function described in Bluetooth core specification 00233 * 4.2 section 3.H.2.2.2. 00234 * 00235 * @detail BLE uses a hash function to calculate the first half of a resolvable address 00236 * from the second half of the address and an irk. This function will use the ECB 00237 * periferal to hash these data acording to the Bluetooth core specification. 00238 * 00239 * @note The ECB expect little endian input and output. 00240 * This function expect big endian and will reverse the data as necessary. 00241 * 00242 * @param[in] p_k The key used in the hash function. 00243 * For address resolution this is should be the irk. 00244 * The array must have a length of 16. 00245 * @param[in] p_r The rand used in the hash function. For generating a new address 00246 * this would be a random number. For resolving a resolvable address 00247 * this would be the last half of the address being resolved. 00248 * The array must have a length of 3. 00249 * @param[out] p_local_hash The result of the hash operation. For address resolution this 00250 * will match the first half of the address being resolved if and only 00251 * if the irk used in the hash function is the same one used to generate 00252 * the address. 00253 * The array must have a length of 16. 00254 * 00255 * @note ====IMPORTANT==== 00256 * This is a special modification to the original nRF51 SDK required by the mbed BLE API 00257 * to be able to generate BLE private resolvable addresses. This function is used by 00258 * the BLE API implementation for nRF5xSecurityManager::getAddressFromBondTable() in the 00259 * ble-nrf51822 yotta module. 00260 * ================= 00261 */ 00262 void ah(uint8_t const * p_k, uint8_t const * p_r, uint8_t * p_local_hash); 00263 00264 /** @} */ 00265 00266 #endif /* PEER_ID_MANAGER_H__ */
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