Michael Galis / nRF51822

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Fork of nRF51822 by Nordic Semiconductor

source/btle/btle_security.cpp@541:884f95bf5351, 2016-01-11 (annotated)

Committer:
vcoubard
Date:
Mon Jan 11 10:19:02 2016 +0000
Revision:
541:884f95bf5351
Parent:
525:d76f1c3f4599
Child:
549:3f782c64d014
Synchronized with git rev 60a7c0c0

Author: Rohit Grover

bring in the latest changes for BLE::init() where we allow <object, member> tuples for init callback.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vcoubard 541:884f95bf5351 1 /* mbed Microcontroller Library
vcoubard 541:884f95bf5351 2 * Copyright (c) 2006-2013 ARM Limited
vcoubard 541:884f95bf5351 3 *
vcoubard 541:884f95bf5351 4 * Licensed under the Apache License, Version 2.0 (the "License");
vcoubard 541:884f95bf5351 5 * you may not use this file except in compliance with the License.
vcoubard 541:884f95bf5351 6 * You may obtain a copy of the License at
vcoubard 541:884f95bf5351 7 *
vcoubard 541:884f95bf5351 8 * http://www.apache.org/licenses/LICENSE-2.0
vcoubard 541:884f95bf5351 9 *
vcoubard 541:884f95bf5351 10 * Unless required by applicable law or agreed to in writing, software
vcoubard 541:884f95bf5351 11 * distributed under the License is distributed on an "AS IS" BASIS,
vcoubard 541:884f95bf5351 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vcoubard 541:884f95bf5351 13 * See the License for the specific language governing permissions and
vcoubard 541:884f95bf5351 14 * limitations under the License.
vcoubard 541:884f95bf5351 15 */
vcoubard 541:884f95bf5351 16
vcoubard 541:884f95bf5351 17 #include "btle.h"
vcoubard 541:884f95bf5351 18 #include "pstorage.h"
vcoubard 541:884f95bf5351 19
vcoubard 541:884f95bf5351 20 #include "nRF5xGap.h"
vcoubard 541:884f95bf5351 21 #include "nRF5xSecurityManager.h"
vcoubard 541:884f95bf5351 22
vcoubard 541:884f95bf5351 23 #include "device_manager.h"
vcoubard 541:884f95bf5351 24 #include "btle_security.h"
vcoubard 541:884f95bf5351 25
vcoubard 541:884f95bf5351 26 static dm_application_instance_t applicationInstance;
vcoubard 541:884f95bf5351 27 static ret_code_t dm_handler(dm_handle_t const *p_handle, dm_event_t const *p_event, ret_code_t event_result);
vcoubard 541:884f95bf5351 28
vcoubard 541:884f95bf5351 29 ble_error_t
vcoubard 541:884f95bf5351 30 btle_initializeSecurity(bool enableBonding,
vcoubard 541:884f95bf5351 31 bool requireMITM,
vcoubard 541:884f95bf5351 32 SecurityManager::SecurityIOCapabilities_t iocaps,
vcoubard 541:884f95bf5351 33 const SecurityManager::Passkey_t passkey)
vcoubard 541:884f95bf5351 34 {
vcoubard 541:884f95bf5351 35 /* guard against multiple initializations */
vcoubard 541:884f95bf5351 36 static bool initialized = false;
vcoubard 541:884f95bf5351 37 if (initialized) {
vcoubard 541:884f95bf5351 38 return BLE_ERROR_NONE;
vcoubard 541:884f95bf5351 39 }
vcoubard 541:884f95bf5351 40
vcoubard 541:884f95bf5351 41 if (pstorage_init() != NRF_SUCCESS) {
vcoubard 541:884f95bf5351 42 return BLE_ERROR_UNSPECIFIED;
vcoubard 541:884f95bf5351 43 }
vcoubard 541:884f95bf5351 44
vcoubard 541:884f95bf5351 45 ret_code_t rc;
vcoubard 541:884f95bf5351 46 if (passkey) {
vcoubard 541:884f95bf5351 47 ble_opt_t opts;
vcoubard 541:884f95bf5351 48 opts.gap_opt.passkey.p_passkey = const_cast<uint8_t *>(passkey);
vcoubard 541:884f95bf5351 49 if ((rc = sd_ble_opt_set(BLE_GAP_OPT_PASSKEY, &opts)) != NRF_SUCCESS) {
vcoubard 541:884f95bf5351 50 switch (rc) {
vcoubard 541:884f95bf5351 51 case BLE_ERROR_INVALID_CONN_HANDLE:
vcoubard 541:884f95bf5351 52 case NRF_ERROR_INVALID_ADDR:
vcoubard 541:884f95bf5351 53 case NRF_ERROR_INVALID_PARAM:
vcoubard 541:884f95bf5351 54 default:
vcoubard 541:884f95bf5351 55 return BLE_ERROR_INVALID_PARAM;
vcoubard 541:884f95bf5351 56 case NRF_ERROR_INVALID_STATE:
vcoubard 541:884f95bf5351 57 return BLE_ERROR_INVALID_STATE;
vcoubard 541:884f95bf5351 58 case NRF_ERROR_BUSY:
vcoubard 541:884f95bf5351 59 return BLE_STACK_BUSY;
vcoubard 541:884f95bf5351 60 }
vcoubard 541:884f95bf5351 61 }
vcoubard 541:884f95bf5351 62 }
vcoubard 541:884f95bf5351 63
vcoubard 541:884f95bf5351 64 dm_init_param_t dm_init_param = {
vcoubard 541:884f95bf5351 65 .clear_persistent_data = false /* Set to true in case the module should clear all persistent data. */
vcoubard 541:884f95bf5351 66 };
vcoubard 541:884f95bf5351 67 if (dm_init(&dm_init_param) != NRF_SUCCESS) {
vcoubard 541:884f95bf5351 68 return BLE_ERROR_UNSPECIFIED;
vcoubard 541:884f95bf5351 69 }
vcoubard 541:884f95bf5351 70
vcoubard 541:884f95bf5351 71 const dm_application_param_t dm_param = {
vcoubard 541:884f95bf5351 72 .evt_handler = dm_handler,
vcoubard 541:884f95bf5351 73 .service_type = DM_PROTOCOL_CNTXT_GATT_CLI_ID,
vcoubard 541:884f95bf5351 74 .sec_param = {
vcoubard 541:884f95bf5351 75 .bond = enableBonding,/**< Perform bonding. */
vcoubard 541:884f95bf5351 76 .mitm = requireMITM, /**< Man In The Middle protection required. */
vcoubard 541:884f95bf5351 77 .io_caps = iocaps, /**< IO capabilities, see @ref BLE_GAP_IO_CAPS. */
vcoubard 541:884f95bf5351 78 .oob = 0, /**< Out Of Band data available. */
vcoubard 541:884f95bf5351 79 .min_key_size = 16, /**< Minimum encryption key size in octets between 7 and 16. If 0 then not applicable in this instance. */
vcoubard 541:884f95bf5351 80 .max_key_size = 16, /**< Maximum encryption key size in octets between min_key_size and 16. */
vcoubard 541:884f95bf5351 81 .kdist_periph = {
vcoubard 541:884f95bf5351 82 .enc = 1, /**< Long Term Key and Master Identification. */
vcoubard 541:884f95bf5351 83 .id = 1, /**< Identity Resolving Key and Identity Address Information. */
vcoubard 541:884f95bf5351 84 .sign = 1, /**< Connection Signature Resolving Key. */
vcoubard 541:884f95bf5351 85 }, /**< Key distribution bitmap: keys that the peripheral device will distribute. */
vcoubard 541:884f95bf5351 86 }
vcoubard 541:884f95bf5351 87 };
vcoubard 541:884f95bf5351 88
vcoubard 541:884f95bf5351 89 if ((rc = dm_register(&applicationInstance, &dm_param)) != NRF_SUCCESS) {
vcoubard 541:884f95bf5351 90 switch (rc) {
vcoubard 541:884f95bf5351 91 case NRF_ERROR_INVALID_STATE:
vcoubard 541:884f95bf5351 92 return BLE_ERROR_INVALID_STATE;
vcoubard 541:884f95bf5351 93 case NRF_ERROR_NO_MEM:
vcoubard 541:884f95bf5351 94 return BLE_ERROR_NO_MEM;
vcoubard 541:884f95bf5351 95 default:
vcoubard 541:884f95bf5351 96 return BLE_ERROR_UNSPECIFIED;
vcoubard 541:884f95bf5351 97 }
vcoubard 541:884f95bf5351 98 }
vcoubard 541:884f95bf5351 99
vcoubard 541:884f95bf5351 100 initialized = true;
vcoubard 541:884f95bf5351 101 return BLE_ERROR_NONE;
vcoubard 541:884f95bf5351 102 }
vcoubard 541:884f95bf5351 103
vcoubard 541:884f95bf5351 104 ble_error_t
vcoubard 541:884f95bf5351 105 btle_purgeAllBondingState(void)
vcoubard 541:884f95bf5351 106 {
vcoubard 541:884f95bf5351 107 ret_code_t rc;
vcoubard 541:884f95bf5351 108 if ((rc = dm_device_delete_all(&applicationInstance)) == NRF_SUCCESS) {
vcoubard 541:884f95bf5351 109 return BLE_ERROR_NONE;
vcoubard 541:884f95bf5351 110 }
vcoubard 541:884f95bf5351 111
vcoubard 541:884f95bf5351 112 switch (rc) {
vcoubard 541:884f95bf5351 113 case NRF_ERROR_INVALID_STATE:
vcoubard 541:884f95bf5351 114 return BLE_ERROR_INVALID_STATE;
vcoubard 541:884f95bf5351 115 case NRF_ERROR_NO_MEM:
vcoubard 541:884f95bf5351 116 return BLE_ERROR_NO_MEM;
vcoubard 541:884f95bf5351 117 default:
vcoubard 541:884f95bf5351 118 return BLE_ERROR_UNSPECIFIED;
vcoubard 541:884f95bf5351 119 }
vcoubard 541:884f95bf5351 120 }
vcoubard 541:884f95bf5351 121
vcoubard 541:884f95bf5351 122 ble_error_t
vcoubard 541:884f95bf5351 123 btle_getLinkSecurity(Gap::Handle_t connectionHandle, SecurityManager::LinkSecurityStatus_t *securityStatusP)
vcoubard 541:884f95bf5351 124 {
vcoubard 541:884f95bf5351 125 ret_code_t rc;
vcoubard 541:884f95bf5351 126 dm_handle_t dmHandle = {
vcoubard 541:884f95bf5351 127 .appl_id = applicationInstance,
vcoubard 541:884f95bf5351 128 };
vcoubard 541:884f95bf5351 129 if ((rc = dm_handle_get(connectionHandle, &dmHandle)) != NRF_SUCCESS) {
vcoubard 541:884f95bf5351 130 if (rc == NRF_ERROR_NOT_FOUND) {
vcoubard 541:884f95bf5351 131 return BLE_ERROR_INVALID_PARAM;
vcoubard 541:884f95bf5351 132 } else {
vcoubard 541:884f95bf5351 133 return BLE_ERROR_UNSPECIFIED;
vcoubard 541:884f95bf5351 134 }
vcoubard 541:884f95bf5351 135 }
vcoubard 541:884f95bf5351 136
vcoubard 541:884f95bf5351 137 if ((rc = dm_security_status_req(&dmHandle, reinterpret_cast<dm_security_status_t *>(securityStatusP))) != NRF_SUCCESS) {
vcoubard 541:884f95bf5351 138 switch (rc) {
vcoubard 541:884f95bf5351 139 case NRF_ERROR_INVALID_STATE:
vcoubard 541:884f95bf5351 140 return BLE_ERROR_INVALID_STATE;
vcoubard 541:884f95bf5351 141 case NRF_ERROR_NO_MEM:
vcoubard 541:884f95bf5351 142 return BLE_ERROR_NO_MEM;
vcoubard 541:884f95bf5351 143 default:
vcoubard 541:884f95bf5351 144 return BLE_ERROR_UNSPECIFIED;
vcoubard 541:884f95bf5351 145 }
vcoubard 541:884f95bf5351 146 }
vcoubard 541:884f95bf5351 147
vcoubard 541:884f95bf5351 148 return BLE_ERROR_NONE;
vcoubard 541:884f95bf5351 149 }
vcoubard 541:884f95bf5351 150
vcoubard 541:884f95bf5351 151 ret_code_t
vcoubard 541:884f95bf5351 152 dm_handler(dm_handle_t const *p_handle, dm_event_t const *p_event, ret_code_t event_result)
vcoubard 541:884f95bf5351 153 {
vcoubard 541:884f95bf5351 154 switch (p_event->event_id) {
vcoubard 541:884f95bf5351 155 case DM_EVT_SECURITY_SETUP: /* started */ {
vcoubard 541:884f95bf5351 156 const ble_gap_sec_params_t *peerParams = &p_event->event_param.p_gap_param->params.sec_params_request.peer_params;
vcoubard 541:884f95bf5351 157 nRF5xSecurityManager::getInstance().processSecuritySetupInitiatedEvent(p_event->event_param.p_gap_param->conn_handle,
vcoubard 541:884f95bf5351 158 peerParams->bond,
vcoubard 541:884f95bf5351 159 peerParams->mitm,
vcoubard 541:884f95bf5351 160 (SecurityManager::SecurityIOCapabilities_t)peerParams->io_caps);
vcoubard 541:884f95bf5351 161 break;
vcoubard 541:884f95bf5351 162 }
vcoubard 541:884f95bf5351 163 case DM_EVT_SECURITY_SETUP_COMPLETE:
vcoubard 541:884f95bf5351 164 nRF5xSecurityManager::getInstance().
vcoubard 541:884f95bf5351 165 processSecuritySetupCompletedEvent(p_event->event_param.p_gap_param->conn_handle,
vcoubard 541:884f95bf5351 166 (SecurityManager::SecurityCompletionStatus_t)(p_event->event_param.p_gap_param->params.auth_status.auth_status));
vcoubard 541:884f95bf5351 167 break;
vcoubard 541:884f95bf5351 168 case DM_EVT_LINK_SECURED: {
vcoubard 541:884f95bf5351 169 unsigned securityMode = p_event->event_param.p_gap_param->params.conn_sec_update.conn_sec.sec_mode.sm;
vcoubard 541:884f95bf5351 170 unsigned level = p_event->event_param.p_gap_param->params.conn_sec_update.conn_sec.sec_mode.lv;
vcoubard 541:884f95bf5351 171 SecurityManager::SecurityMode_t resolvedSecurityMode = SecurityManager::SECURITY_MODE_NO_ACCESS;
vcoubard 541:884f95bf5351 172 switch (securityMode) {
vcoubard 541:884f95bf5351 173 case 1:
vcoubard 541:884f95bf5351 174 switch (level) {
vcoubard 541:884f95bf5351 175 case 1:
vcoubard 541:884f95bf5351 176 resolvedSecurityMode = SecurityManager::SECURITY_MODE_ENCRYPTION_OPEN_LINK;
vcoubard 541:884f95bf5351 177 break;
vcoubard 541:884f95bf5351 178 case 2:
vcoubard 541:884f95bf5351 179 resolvedSecurityMode = SecurityManager::SECURITY_MODE_ENCRYPTION_NO_MITM;
vcoubard 541:884f95bf5351 180 break;
vcoubard 541:884f95bf5351 181 case 3:
vcoubard 541:884f95bf5351 182 resolvedSecurityMode = SecurityManager::SECURITY_MODE_ENCRYPTION_WITH_MITM;
vcoubard 541:884f95bf5351 183 break;
vcoubard 541:884f95bf5351 184 }
vcoubard 541:884f95bf5351 185 break;
vcoubard 541:884f95bf5351 186 case 2:
vcoubard 541:884f95bf5351 187 switch (level) {
vcoubard 541:884f95bf5351 188 case 1:
vcoubard 541:884f95bf5351 189 resolvedSecurityMode = SecurityManager::SECURITY_MODE_SIGNED_NO_MITM;
vcoubard 541:884f95bf5351 190 break;
vcoubard 541:884f95bf5351 191 case 2:
vcoubard 541:884f95bf5351 192 resolvedSecurityMode = SecurityManager::SECURITY_MODE_SIGNED_WITH_MITM;
vcoubard 541:884f95bf5351 193 break;
vcoubard 541:884f95bf5351 194 }
vcoubard 541:884f95bf5351 195 break;
vcoubard 541:884f95bf5351 196 }
vcoubard 541:884f95bf5351 197
vcoubard 541:884f95bf5351 198 nRF5xSecurityManager::getInstance().processLinkSecuredEvent(p_event->event_param.p_gap_param->conn_handle, resolvedSecurityMode);
vcoubard 541:884f95bf5351 199 break;
vcoubard 541:884f95bf5351 200 }
vcoubard 541:884f95bf5351 201 case DM_EVT_DEVICE_CONTEXT_STORED:
vcoubard 541:884f95bf5351 202 nRF5xSecurityManager::getInstance().processSecurityContextStoredEvent(p_event->event_param.p_gap_param->conn_handle);
vcoubard 541:884f95bf5351 203 break;
vcoubard 541:884f95bf5351 204 default:
vcoubard 541:884f95bf5351 205 break;
vcoubard 541:884f95bf5351 206 }
vcoubard 541:884f95bf5351 207
vcoubard 541:884f95bf5351 208 return NRF_SUCCESS;
rgrover1 133:74079098b3c9 209 }