/*
* Copyright (C) 2014 BlueKitchen GmbH
*
* 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 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 the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH 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 MATTHIAS
* RINGWALD 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.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
#define __BTSTACK_FILE__ "sm_pairing_peripheral.c"
// *****************************************************************************
/* EXAMPLE_START(sm_pairing_peripheral): LE Peripheral - Test pairing combinations
*
* @text Depending on the Authentication requiremens and IO Capabilities,
* the pairing process uses different short and long term key generation method.
* This example helps explore the different options incl. LE Secure Connections.
*/
// *****************************************************************************
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "sm_pairing_peripheral.h"
#include "btstack.h"
/* @section Main Application Setup
*
* @text Listing MainConfiguration shows main application code.
* It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled
* ATT Database generated from $sm_pairing_peripheral.gatt$. Finally, it configures the advertisements
* and boots the Bluetooth stack.
* In this example, the Advertisement contains the Flags attribute and the device name.
* The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported.
* Various examples for IO Capabilites and Authentication Requirements are given below.
*/
/* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */
static btstack_packet_callback_registration_t hci_event_callback_registration;
static btstack_packet_callback_registration_t sm_event_callback_registration;
// static hci_con_handle_t con_handle;
static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
const uint8_t adv_data[] = {
// Flags general discoverable, BR/EDR not supported
0x02, BLUETOOTH_DATA_TYPE_FLAGS, 0x06,
// Name
0x0b, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, 'S', 'M', ' ', 'P', 'a', 'i', 'r', 'i', 'n', 'g',
};
const uint8_t adv_data_len = sizeof(adv_data);
static void sm_peripheral_setup(void){
// register for HCI events
hci_event_callback_registration.callback = &packet_handler;
hci_add_event_handler(&hci_event_callback_registration);
l2cap_init();
// setup le device db
le_device_db_init();
// setup SM: Display only
sm_init();
sm_event_callback_registration.callback = &packet_handler;
sm_add_event_handler(&sm_event_callback_registration);
/**
* Choose ONE of the following configurations
*/
// LE Legacy Pairing, Just Works
// sm_set_io_capabilities(IO_CAPABILITY_NO_INPUT_NO_OUTPUT);
// sm_set_authentication_requirements(0);
// LE Legacy Pairing, Passkey entry initiator enter, responder (us) displays
// sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_ONLY);
// sm_set_authentication_requirements(SM_AUTHREQ_MITM_PROTECTION);
// sm_use_fixed_passkey_in_display_role(123456);
#ifdef ENABLE_LE_SECURE_CONNECTIONS
// LE Secure Connetions, Just Works
// sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_YES_NO);
// sm_set_authentication_requirements(SM_AUTHREQ_SECURE_CONNECTION);
// LE Secure Connections, Numeric Comparison
// sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_YES_NO);
// sm_set_authentication_requirements(SM_AUTHREQ_SECURE_CONNECTION|SM_AUTHREQ_MITM_PROTECTION);
// LE Legacy Pairing, Passkey entry initiator enter, responder (us) displays
// sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_ONLY);
// sm_set_authentication_requirements(SM_AUTHREQ_SECURE_CONNECTION|SM_AUTHREQ_MITM_PROTECTION);
// sm_use_fixed_passkey_in_display_role(123456);
#endif
// setup ATT server
att_server_init(profile_data, NULL, NULL);
att_server_register_packet_handler(packet_handler);
// setup advertisements
uint16_t adv_int_min = 0x0030;
uint16_t adv_int_max = 0x0030;
uint8_t adv_type = 0;
bd_addr_t null_addr;
memset(null_addr, 0, 6);
gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00);
gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data);
gap_advertisements_enable(1);
}
/* LISTING_END */
/*
* @section Packet Handler
*
* @text The packet handler is used to:
* - stop the counter after a disconnect
* - send a notification when the requested ATT_EVENT_CAN_SEND_NOW is received
*/
/* LISTING_START(packetHandler): Packet Handler */
static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(channel);
UNUSED(size);
bd_addr_t addr;
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (hci_event_packet_get_type(packet)) {
case SM_EVENT_JUST_WORKS_REQUEST:
printf("Just Works requested\n");
sm_just_works_confirm(sm_event_just_works_request_get_handle(packet));
break;
case SM_EVENT_NUMERIC_COMPARISON_REQUEST:
printf("Confirming numeric comparison: %"PRIu32"\n", sm_event_numeric_comparison_request_get_passkey(packet));
sm_numeric_comparison_confirm(sm_event_passkey_display_number_get_handle(packet));
break;
case SM_EVENT_PASSKEY_DISPLAY_NUMBER:
printf("Display Passkey: %"PRIu32"\n", sm_event_passkey_display_number_get_passkey(packet));
break;
case SM_EVENT_IDENTITY_CREATED:
sm_event_identity_created_get_identity_address(packet, addr);
printf("Identity created: type %u address %s\n", sm_event_identity_created_get_identity_addr_type(packet), bd_addr_to_str(addr));
break;
case SM_EVENT_IDENTITY_RESOLVING_SUCCEEDED:
sm_event_identity_resolving_succeeded_get_identity_address(packet, addr);
printf("Identity resolved: type %u address %s\n", sm_event_identity_resolving_succeeded_get_identity_addr_type(packet), bd_addr_to_str(addr));
break;
case SM_EVENT_IDENTITY_RESOLVING_FAILED:
sm_event_identity_created_get_address(packet, addr);
printf("Identity resolving failed\n");
break;
case SM_EVENT_PAIRING_COMPLETE:
switch (sm_event_pairing_complete_get_status(packet)){
case ERROR_CODE_SUCCESS:
printf("Pairing complete, success\n");
break;
case ERROR_CODE_CONNECTION_TIMEOUT:
printf("Pairing failed, timeout\n");
break;
case ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION:
printf("Pairing faileed, disconnected\n");
break;
case ERROR_CODE_AUTHENTICATION_FAILURE:
printf("Pairing failed, reason = %u\n", sm_event_pairing_complete_get_reason(packet));
break;
default:
break;
}
break;
default:
break;
}
break;
}
}
/* LISTING_END */
int btstack_main(void);
int btstack_main(void)
{
sm_peripheral_setup();
// turn on!
hci_power_control(HCI_POWER_ON);
return 0;
}
/* EXAMPLE_END */