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btstack/test/mesh/mesh_proxy_server.c
Milanka Ringwald f02c684c6c mesh: proxy service. send secure network beacon
2019-07-20 08:50:24 +02:00

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/*
* 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__ "mesh_proxy_server.c"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ble/mesh/gatt_bearer.h"
#include "ble/gatt-service/mesh_proxy_service_server.h"
#include "mesh_proxy_server.h"
#include "ble/mesh/mesh_network.h"
#include "btstack_config.h"
#include "btstack.h"
#include "provisioning.h"
#include "provisioning_device.h"
#include "btstack_tlv.h"
#define BEACON_TYPE_SECURE_NETWORK 1
static mesh_provisioning_data_t provisioning_data;
static const btstack_tlv_t * btstack_tlv_singleton_impl;
static void * btstack_tlv_singleton_context;
static uint16_t con_handle;
static uint16_t adv_int_min = 0x0030;
static uint16_t adv_int_max = 0x0030;
static btstack_crypto_random_t crypto_request_random;
static btstack_crypto_aes128_t crypto_request_aes128;
static uint8_t plaintext[16];
static uint8_t hash[8];
static uint8_t random_value[8];
static btstack_crypto_aes128_cmac_t mesh_cmac_request;
static uint8_t mesh_secure_network_beacon[22];
static uint8_t mesh_secure_network_beacon_auth_value[16];
static uint8_t mesh_flags;
static uint8_t network_id[8];
static uint8_t beacon_key[16];
static btstack_packet_callback_registration_t hci_event_callback_registration;
static uint8_t adv_data_with_network_id[] = {
// Flags general discoverable, BR/EDR not supported
0x02, BLUETOOTH_DATA_TYPE_FLAGS, 0x06,
// 16-bit Service UUIDs
0x03, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_16_BIT_SERVICE_CLASS_UUIDS, ORG_BLUETOOTH_SERVICE_MESH_PROXY & 0xff, ORG_BLUETOOTH_SERVICE_MESH_PROXY >> 8,
// Service Data
0x0C, BLUETOOTH_DATA_TYPE_SERVICE_DATA, ORG_BLUETOOTH_SERVICE_MESH_PROXY & 0xff, ORG_BLUETOOTH_SERVICE_MESH_PROXY >> 8,
// MESH_IDENTIFICATION_NETWORK_ID_TYPE
MESH_IDENTIFICATION_NETWORK_ID_TYPE,
// Network ID
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
static uint8_t adv_data_with_node_identity[] = {
// Flags general discoverable, BR/EDR not supported
0x02, BLUETOOTH_DATA_TYPE_FLAGS, 0x06,
// 16-bit Service UUIDs
0x03, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_16_BIT_SERVICE_CLASS_UUIDS, ORG_BLUETOOTH_SERVICE_MESH_PROXY & 0xff, ORG_BLUETOOTH_SERVICE_MESH_PROXY >> 8,
// Service Data
0x14, BLUETOOTH_DATA_TYPE_SERVICE_DATA, ORG_BLUETOOTH_SERVICE_MESH_PROXY & 0xff, ORG_BLUETOOTH_SERVICE_MESH_PROXY >> 8,
// MESH_IDENTIFICATION_NODE_IDENTIFY_TYPE
MESH_IDENTIFICATION_NODE_IDENTIFY_TYPE,
// Hash
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// Random
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const uint8_t adv_data_with_network_id_len = sizeof(adv_data_with_network_id);
const uint8_t adv_data_with_node_identity_len = sizeof(adv_data_with_node_identity);
static void show_usage(void){
bd_addr_t iut_address;
gap_local_bd_addr(iut_address);
printf("\n--- Bluetooth Mesh Provisioning Device Test Console %s ---\n", bd_addr_to_str(iut_address));
printf("\n");
printf("Ctrl-c - exit\n");
printf("---\n");
}
static void stdin_process(char cmd){
switch (cmd){
case 't':
printf("disconnect \n");
gap_disconnect(con_handle);
break;
case '\n':
case '\r':
break;
default:
show_usage();
break;
}
}
static void setup_advertising_with_network_id(mesh_provisioning_data_t * prov_data){
// dynamically store network ID into adv data
memcpy(&adv_data_with_network_id[12], prov_data->network_id, sizeof(prov_data->network_id));
// copy beacon key and network id
memcpy(beacon_key, prov_data->beacon_key, 16);
memcpy(network_id, prov_data->network_id, 8);
printf_hexdump(prov_data->network_id, 8);
mesh_flags = prov_data->flags;
// setup advertisements
bd_addr_t null_addr;
memset(null_addr, 0, 6);
uint8_t adv_type = 0; // AFV_IND
gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00);
gap_advertisements_set_data(adv_data_with_network_id_len, (uint8_t*) adv_data_with_network_id);
gap_advertisements_enable(1);
}
static void mesh_proxy_handle_get_aes128(void * arg){
UNUSED(arg);
memcpy(&adv_data_with_node_identity[12], hash, 8);
memcpy(&adv_data_with_node_identity[20], random_value, 8);
printf("Calculated Hash\n");
printf_hexdump(hash, sizeof(hash));
printf("\nAdv\n");
printf_hexdump(adv_data_with_node_identity, sizeof(adv_data_with_node_identity));
// setup advertisements
bd_addr_t null_addr;
memset(null_addr, 0, 6);
uint8_t adv_type = 0; // AFV_IND
gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00);
gap_advertisements_set_data(adv_data_with_network_id_len, (uint8_t*) adv_data_with_network_id);
gap_advertisements_enable(1);
}
static void setup_advertising_with_node_identity(mesh_provisioning_data_t * prov_data){
// Hash = e(IdentityKey, Padding | Random | Address) mod 2^64
memset(plaintext, 0, sizeof(plaintext));
memcpy(&plaintext[6] , random_value, 8);
big_endian_store_16(plaintext, 14, prov_data->unicast_address);
btstack_crypto_aes128_encrypt(&crypto_request_aes128, prov_data->identity_key, plaintext, hash, mesh_proxy_handle_get_aes128, NULL);
}
static void mesh_proxy_handle_get_random(void * arg){
UNUSED(arg);
printf("Received random value\n");
printf_hexdump(random_value, sizeof(random_value));
setup_advertising_with_node_identity(&provisioning_data);
}
static uint8_t mesh_salt_nhbk[16];
static btstack_crypto_aes128_cmac_t crypto_aes128_cmac_request;
static const char salt[] = {'n','k','i','k'};
static void mesh_proxy_handle_get_salt_nhbk(void * arg){
UNUSED(arg);
printf("Received salt_nhbk\n");
printf_hexdump(mesh_salt_nhbk, sizeof(mesh_salt_nhbk));
}
static void mesh_provisioning_dump(const mesh_provisioning_data_t * data){
printf("UnicastAddr: 0x%02x\n", data->unicast_address);
printf("NID: 0x%02x\n", data->nid);
printf("IV Index: 0x%08x\n", data->iv_index);
printf("NetworkID: "); printf_hexdump(data->network_id, 8);
printf("BeaconKey: "); printf_hexdump(data->beacon_key, 16);
printf("EncryptionKey: "); printf_hexdump(data->encryption_key, 16);
printf("PrivacyKey: "); printf_hexdump(data->privacy_key, 16);
printf("DevKey: "); printf_hexdump(data->device_key, 16);
}
static void mesh_secure_network_beacon_auth_value_calculated(void * arg){
UNUSED(arg);
memcpy(&mesh_secure_network_beacon[14], mesh_secure_network_beacon_auth_value, 8);
printf("Secure Network Beacon\n");
printf("- ");
printf_hexdump(mesh_secure_network_beacon, sizeof(mesh_secure_network_beacon));
printf("Secure Network Beacon done");
gatt_bearer_request_can_send_now_for_mesh_beacon();
}
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(channel);
UNUSED(size);
int prov_len;
if (packet_type != HCI_EVENT_PACKET) return;
switch (hci_event_packet_get_type(packet)){
case BTSTACK_EVENT_STATE:{
if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) break;
// get tlv
btstack_tlv_get_instance(&btstack_tlv_singleton_impl, &btstack_tlv_singleton_context);
// load provisioning data
prov_len = btstack_tlv_singleton_impl->get_tag(btstack_tlv_singleton_context, 'PROV', (uint8_t *) &provisioning_data, sizeof(mesh_provisioning_data_t));
printf("Provisioning data available: %u\n", prov_len ? 1 : 0);
if (!prov_len) break;
mesh_provisioning_dump(&provisioning_data);
setup_advertising_with_network_id(&provisioning_data);
// btstack_crypto_random_generate(&crypto_request_random, random_value, sizeof(random_value), mesh_proxy_handle_get_random, NULL);
break;
}
case HCI_EVENT_LE_META:
switch (hci_event_le_meta_get_subevent_code(packet)){
case HCI_SUBEVENT_LE_CONNECTION_COMPLETE:
con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet);
printf("connected handle 0x%02x\n", con_handle);
break;
default:
break;
}
break;
case HCI_EVENT_MESH_META:
printf("packet_handler packet_type %02x, type 0%02x\n", packet_type, hci_event_packet_get_type(packet));
switch (hci_event_mesh_meta_get_subevent_code(packet)){
case MESH_PB_TRANSPORT_LINK_OPEN:
printf("mesh_proxy_server: MESH_PB_TRANSPORT_LINK_OPEN\n");
printf("+ Setup Secure Network Beacon\n");
mesh_secure_network_beacon[0] = BEACON_TYPE_SECURE_NETWORK;
mesh_secure_network_beacon[1] = mesh_flags;
memcpy(&mesh_secure_network_beacon[2], network_id, 8);
big_endian_store_32(mesh_secure_network_beacon, 10, mesh_get_iv_index());
btstack_crypto_aes128_cmac_message(&mesh_cmac_request, beacon_key, 13,
&mesh_secure_network_beacon[1], mesh_secure_network_beacon_auth_value, &mesh_secure_network_beacon_auth_value_calculated, NULL);
break;
case MESH_SUBEVENT_CAN_SEND_NOW:
gatt_bearer_send_mesh_beacon(mesh_secure_network_beacon, sizeof(mesh_secure_network_beacon));
default:
break;
}
break;
default:
break;
}
}
int btstack_main(void);
int btstack_main(void){
hci_event_callback_registration.callback = &packet_handler;
hci_add_event_handler(&hci_event_callback_registration);
// crypto
btstack_crypto_init();
// l2cap
l2cap_init();
// setup le device db
le_device_db_init();
// setup SM: Display only
sm_init();
// setup ATT server
att_server_init(profile_data, NULL, NULL);
// mesh_proxy_service_server_init();
// mesh_proxy_service_server_register_packet_handler(packet_handler);
// Setup GATT bearere
gatt_bearer_init();
gatt_bearer_register_for_mesh_message(packet_handler);
gatt_bearer_register_for_mesh_beacon(packet_handler);
#ifdef HAVE_BTSTACK_STDIN
btstack_stdin_setup(stdin_process);
#endif
// turn on!
hci_power_control(HCI_POWER_ON);
return 0;
}
/* EXAMPLE_END */
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