1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 // ***************************************************************************** 39 /* EXAMPLE_START(sm_pairing_peripheral): LE Peripheral - Test pairing combinations 40 * 41 * @text Depending on the Authentication requiremens and IO Capabilities, 42 * the pairing process uses different short and long term key generation method. 43 * This example helps explore the different options incl. LE Secure Connections. 44 */ 45 // ***************************************************************************** 46 47 #include <stdint.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 52 #include "sm_pairing_peripheral.h" 53 #include "btstack.h" 54 55 /* @section Main Application Setup 56 * 57 * @text Listing MainConfiguration shows main application code. 58 * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled 59 * ATT Database generated from $sm_pairing_peripheral.gatt$. Finally, it configures the advertisements 60 * and boots the Bluetooth stack. 61 * In this example, the Advertisement contains the Flags attribute and the device name. 62 * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported. 63 * Various examples for IO Capabilites and Authentication Requirements are given below. 64 */ 65 66 /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */ 67 static btstack_packet_callback_registration_t hci_event_callback_registration; 68 static btstack_packet_callback_registration_t sm_event_callback_registration; 69 // static hci_con_handle_t con_handle; 70 71 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 72 73 const uint8_t adv_data[] = { 74 // Flags general discoverable, BR/EDR not supported 75 0x02, 0x01, 0x06, 76 // Name 77 0x0b, 0x09, 'S', 'M', ' ', 'P', 'a', 'i', 'r', 'i', 'n', 'g', 78 }; 79 const uint8_t adv_data_len = sizeof(adv_data); 80 81 static void sm_peripheral_setup(void){ 82 83 // register for HCI events 84 hci_event_callback_registration.callback = &packet_handler; 85 hci_add_event_handler(&hci_event_callback_registration); 86 87 l2cap_init(); 88 89 // setup le device db 90 le_device_db_init(); 91 92 // setup SM: Display only 93 sm_init(); 94 sm_event_callback_registration.callback = &packet_handler; 95 sm_add_event_handler(&sm_event_callback_registration); 96 97 /** 98 * Choose ONE of the following configurations 99 */ 100 101 // LE Legacy Pairing, Just Works 102 sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_YES_NO); 103 sm_set_authentication_requirements(0); 104 105 // LE Legacy Pairing, Passkey entry initiator enter, responder (us) displays 106 // sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_ONLY); 107 // sm_set_authentication_requirements(SM_AUTHREQ_MITM_PROTECTION); 108 109 #ifdef ENABLE_LE_SECURE_CONNECTIONS 110 // LE Secure Connetions, Just Works 111 // sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_YES_NO); 112 // sm_set_authentication_requirements(SM_AUTHREQ_SECURE_CONNECTION); 113 114 // LE Secure Connections, Numeric Comparison 115 // sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_YES_NO); 116 // sm_set_authentication_requirements(SM_AUTHREQ_SECURE_CONNECTION|SM_AUTHREQ_MITM_PROTECTION); 117 118 // LE Legacy Pairing, Passkey entry initiator enter, responder (us) displays 119 // sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_ONLY); 120 // sm_set_authentication_requirements(SM_AUTHREQ_SECURE_CONNECTION|SM_AUTHREQ_MITM_PROTECTION); 121 #endif 122 123 // setup ATT server 124 att_server_init(profile_data, NULL, NULL); 125 att_server_register_packet_handler(packet_handler); 126 127 // setup advertisements 128 uint16_t adv_int_min = 0x0030; 129 uint16_t adv_int_max = 0x0030; 130 uint8_t adv_type = 0; 131 bd_addr_t null_addr; 132 memset(null_addr, 0, 6); 133 gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00); 134 gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data); 135 gap_advertisements_enable(1); 136 } 137 138 /* LISTING_END */ 139 140 /* 141 * @section Packet Handler 142 * 143 * @text The packet handler is used to: 144 * - stop the counter after a disconnect 145 * - send a notification when the requested ATT_EVENT_CAN_SEND_NOW is received 146 */ 147 148 /* LISTING_START(packetHandler): Packet Handler */ 149 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 150 UNUSED(channel); 151 UNUSED(size); 152 153 bd_addr_t addr; 154 switch (packet_type) { 155 case HCI_EVENT_PACKET: 156 switch (hci_event_packet_get_type(packet)) { 157 case SM_EVENT_JUST_WORKS_REQUEST: 158 printf("Just Works requested\n"); 159 sm_just_works_confirm(sm_event_just_works_request_get_handle(packet)); 160 break; 161 case SM_EVENT_NUMERIC_COMPARISON_REQUEST: 162 printf("Confirming numeric comparison: %u\n", sm_event_numeric_comparison_request_get_passkey(packet)); 163 sm_numeric_comparison_confirm(sm_event_passkey_display_number_get_handle(packet)); 164 break; 165 case SM_EVENT_PASSKEY_DISPLAY_NUMBER: 166 printf("Display Passkey: %u\n", sm_event_passkey_display_number_get_passkey(packet)); 167 break; 168 case SM_EVENT_IDENTITY_CREATED: 169 sm_event_identity_created_get_identity_address(packet, addr); 170 printf("Identity created: type %u address %s\n", sm_event_identity_created_get_identity_addr_type(packet), bd_addr_to_str(addr)); 171 break; 172 case SM_EVENT_IDENTITY_RESOLVING_SUCCEEDED: 173 sm_event_identity_resolving_succeeded_get_identity_address(packet, addr); 174 printf("Identity resolved: type %u address %s\n", sm_event_identity_resolving_succeeded_get_identity_addr_type(packet), bd_addr_to_str(addr)); 175 break; 176 case SM_EVENT_IDENTITY_RESOLVING_FAILED: 177 sm_event_identity_created_get_address(packet, addr); 178 printf("Identity resolving failed\n"); 179 break; 180 } 181 break; 182 } 183 } 184 /* LISTING_END */ 185 186 int btstack_main(void); 187 int btstack_main(void) 188 { 189 sm_peripheral_setup(); 190 191 // turn on! 192 hci_power_control(HCI_POWER_ON); 193 194 return 0; 195 } 196 /* EXAMPLE_END */ 197