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/* Bluetooth Mesh */
/*
* SPDX-FileCopyrightText: 2017 Intel Corporation
* SPDX-FileContributor: 2018-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include <errno.h>
#include "mesh.h"
#include "rpl.h"
#include "adv.h"
#include "beacon.h"
#include "access.h"
#include "transport.h"
#include "foundation.h"
#include "mesh/common.h"
#include "proxy_common.h"
#include "proxy_server.h"
#include "prov_common.h"
#include "prov_node.h"
#if CONFIG_BLE_MESH_V11_SUPPORT
#include "mesh_v1.1/utils.h"
#endif
#if (CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PB_GATT) || \
CONFIG_BLE_MESH_GATT_PROXY_SERVER
#if !CONFIG_BLE_MESH_BQB_TEST
/* Not support enabling Proxy Client and Proxy Server simultaneously */
_Static_assert(!(IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) && IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_CLIENT)),
"Not support Proxy Server and Proxy Client simultaneously");
#endif
#define ADV_OPT (BLE_MESH_ADV_OPT_CONNECTABLE | BLE_MESH_ADV_OPT_ONE_TIME)
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER && \
(CONFIG_BLE_MESH_PRB_SRV || CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX)
#define RAND_UPDATE_INTERVAL K_MINUTES(10)
/* The Random field of Private Network Identity
* Advertisement should be updated every 10 minutes.
*/
static struct k_delayed_work rand_upd_timer;
static uint8_t net_id_random[8] = {0};
#endif
static const struct bt_mesh_adv_param slow_adv_param = {
.options = ADV_OPT,
.interval_min = BLE_MESH_GAP_ADV_SLOW_INT_MIN,
.interval_max = BLE_MESH_GAP_ADV_SLOW_INT_MAX,
};
static const struct bt_mesh_adv_param fast_adv_param = {
.options = ADV_OPT,
.interval_min = BLE_MESH_GAP_ADV_FAST_INT_MIN_0,
.interval_max = BLE_MESH_GAP_ADV_FAST_INT_MAX_0,
};
static bool proxy_adv_enabled;
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
static void proxy_send_beacons(struct k_work *work);
static uint16_t proxy_ccc_val;
#endif
#if CONFIG_BLE_MESH_PB_GATT
static uint16_t prov_ccc_val;
static bool prov_fast_adv;
static uint32_t prov_start_time;
#endif
static struct bt_mesh_proxy_client clients[BLE_MESH_MAX_CONN] = {
[0 ... (BLE_MESH_MAX_CONN - 1)] = {
#if CONFIG_BLE_MESH_PROXY_PRIVACY
.proxy_privacy = BLE_MESH_PROXY_PRIVACY_DISABLED,
#endif
},
};
static uint8_t client_buf_data[BLE_MESH_PROXY_BUF_SIZE * BLE_MESH_MAX_CONN];
/* Track which service is enabled */
static enum {
MESH_GATT_NONE,
MESH_GATT_PROV,
MESH_GATT_PROXY,
} gatt_svc = MESH_GATT_NONE;
static char device_name[DEVICE_NAME_SIZE + 1];
struct bt_mesh_proxy_client *bt_mesh_proxy_server_get_client(uint8_t index)
{
return &clients[0];
}
uint8_t bt_mesh_proxy_server_get_client_count(void)
{
return ARRAY_SIZE(clients);
}
int bt_mesh_set_device_name(const char *name)
{
if (!name) {
BT_ERR("%s, Invalid parameter", __func__);
return -EINVAL;
}
if (strlen(name) > DEVICE_NAME_SIZE) {
BT_ERR("Too long device name (len %d)", strlen(name));
return -EINVAL;
}
memset(device_name, 0x0, sizeof(device_name));
strncpy(device_name, name, DEVICE_NAME_SIZE);
return bt_mesh_gatts_set_local_device_name(device_name);
}
const char *bt_mesh_get_device_name(void)
{
return device_name;
}
static struct bt_mesh_proxy_client *find_client(struct bt_mesh_conn *conn)
{
int i;
for (i = 0; i < ARRAY_SIZE(clients); i++) {
if (clients[i].conn == conn) {
return &clients[i];
}
}
return NULL;
}
static void proxy_sar_timeout(struct k_work *work)
{
struct bt_mesh_proxy_client *client = NULL;
BT_WARN("Proxy SAR timeout");
client = CONTAINER_OF(work, struct bt_mesh_proxy_client, sar_timer.work);
if (!client || !client->conn) {
BT_ERR("Invalid proxy client parameter");
return;
}
net_buf_simple_reset(&client->buf);
bt_mesh_gatts_disconnect(client->conn, 0x13);
}
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
/**
* The following callbacks are used to notify proper information
* to the application layer.
*/
static proxy_server_connect_cb_t proxy_server_connect_cb;
static proxy_server_disconnect_cb_t proxy_server_disconnect_cb;
void bt_mesh_proxy_server_set_conn_cb(proxy_server_connect_cb_t cb)
{
proxy_server_connect_cb = cb;
}
void bt_mesh_proxy_server_set_disconn_cb(proxy_server_disconnect_cb_t cb)
{
proxy_server_disconnect_cb = cb;
}
/* Next subnet in queue to be advertised */
static int next_idx;
bool bt_mesh_proxy_server_find_client_by_addr(uint16_t addr)
{
for (size_t i = 0; i < ARRAY_SIZE(clients); i++) {
if (clients[i].conn) {
for (size_t j = 0; j < ARRAY_SIZE(clients[i].filter); j++) {
if (clients[i].filter[j].proxy_client && clients[i].filter[j].addr == addr) {
return true;
}
}
}
}
return false;
}
uint8_t bt_mesh_proxy_server_get_all_client_type(void)
{
uint8_t client_type = 0;
for (size_t i = 0; i < ARRAY_SIZE(clients); i++) {
if (clients[i].conn) {
for (size_t j = 0; j < ARRAY_SIZE(clients[i].filter); j++) {
if (clients[i].filter[j].proxy_client) {
client_type |= clients[i].proxy_client_type;
}
}
}
}
return client_type;
}
static int filter_set(struct bt_mesh_proxy_client *client,
struct net_buf_simple *buf)
{
uint8_t type = 0U;
if (buf->len < 1) {
BT_WARN("Too short Filter Set message");
return -EINVAL;
}
type = net_buf_simple_pull_u8(buf);
BT_INFO("Set filter type 0x%02x", type);
switch (type) {
case 0x00:
(void)memset(client->filter, 0, sizeof(client->filter));
client->filter_type = SRV_WHITELIST;
break;
case 0x01:
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_directed_proxy_server_set_blacklist(client);
#endif /* CONFIG_BLE_MESH_DF_SRV */
(void)memset(client->filter, 0, sizeof(client->filter));
client->filter_type = SRV_BLACKLIST;
break;
default:
BT_WARN("Prohibited Filter Type 0x%02x", type);
return -EINVAL;
}
return 0;
}
static void filter_add(struct bt_mesh_proxy_client *client,
uint16_t addr, bool proxy_client)
{
int i;
/* The flag proxy_client is used to indicate if the added address
* is the element address of Proxy Client.
*/
BT_DBG("addr 0x%04x", addr);
if (addr == BLE_MESH_ADDR_UNASSIGNED) {
return;
}
if (!BLE_MESH_ADDR_IS_UNICAST(addr) && proxy_client == true) {
BT_ERR("Invalid proxy client element addr 0x%04x", addr);
return;
}
for (i = 0; i < ARRAY_SIZE(client->filter); i++) {
if (client->filter[i].addr == addr) {
return;
}
}
for (i = 0; i < ARRAY_SIZE(client->filter); i++) {
if (client->filter[i].addr == addr) {
BT_INFO("client addr 0x%04x already added", addr);
return;
}
if (client->filter[i].addr == BLE_MESH_ADDR_UNASSIGNED) {
BT_INFO("Add client or filter addr 0x%04x", addr);
client->filter[i].addr = addr;
client->filter[i].proxy_client = proxy_client;
return;
}
}
BT_WARN("Proxy filter is full!");
}
static void filter_remove(struct bt_mesh_proxy_client *client, uint16_t addr)
{
int i;
BT_DBG("addr 0x%04x", addr);
if (addr == BLE_MESH_ADDR_UNASSIGNED) {
return;
}
for (i = 0; i < ARRAY_SIZE(client->filter); i++) {
if (client->filter[i].addr == addr) {
client->filter[i].addr = BLE_MESH_ADDR_UNASSIGNED;
client->filter[i].proxy_client = false;
BT_INFO("Remove filter addr 0x%04x", addr);
return;
}
}
}
static void send_filter_status(struct bt_mesh_proxy_client *client,
struct bt_mesh_net_rx *rx,
struct net_buf_simple *buf)
{
struct bt_mesh_net_tx tx = {
.sub = rx->sub,
.ctx = &rx->ctx,
.src = bt_mesh_primary_addr(),
};
uint16_t filter_size = 0U;
int i, err = 0;
/* Configuration messages always have dst unassigned */
tx.ctx->addr = BLE_MESH_ADDR_UNASSIGNED;
tx.ctx->send_cred = BLE_MESH_FLOODING_CRED,
net_buf_simple_reset(buf);
net_buf_simple_reserve(buf, 10);
net_buf_simple_add_u8(buf, BLE_MESH_PROXY_CFG_FILTER_STATUS);
if (client->filter_type == SRV_WHITELIST) {
net_buf_simple_add_u8(buf, 0x00);
} else {
net_buf_simple_add_u8(buf, 0x01);
}
for (filter_size = 0U, i = 0; i < ARRAY_SIZE(client->filter); i++) {
if (client->filter[i].addr != BLE_MESH_ADDR_UNASSIGNED) {
filter_size++;
}
}
net_buf_simple_add_be16(buf, filter_size);
BT_DBG("%u bytes: %s", buf->len, bt_hex(buf->data, buf->len));
err = bt_mesh_net_encode(&tx, buf, true);
if (err) {
BT_ERR("Encoding proxy filter status failed (err %d)", err);
return;
}
err = bt_mesh_proxy_server_segment_send(client->conn, BLE_MESH_PROXY_CONFIG, buf);
if (err) {
BT_ERR("Failed to send proxy filter status (err %d)", err);
}
}
static void proxy_cfg(struct bt_mesh_proxy_client *client)
{
NET_BUF_SIMPLE_DEFINE(buf, 29);
struct bt_mesh_net_rx rx = {0};
uint8_t opcode = 0U;
int err = 0;
if (client->buf.len > 29) {
BT_ERR("Too large proxy cfg pdu (len %d)", client->buf.len);
return;
}
err = bt_mesh_net_decode(&client->buf, BLE_MESH_NET_IF_PROXY_CFG,
&rx, &buf);
if (err) {
BT_ERR("Failed to decode Proxy Configuration (err %d)", err);
return;
}
rx.local_match = 1U;
if (bt_mesh_rpl_check(&rx, NULL)) {
BT_WARN("Replay: src 0x%04x dst 0x%04x seq 0x%06x",
rx.ctx.addr, rx.ctx.recv_dst, rx.seq);
return;
}
/* Remove network headers */
net_buf_simple_pull(&buf, BLE_MESH_NET_HDR_LEN);
BT_DBG("%u bytes: %s", buf.len, bt_hex(buf.data, buf.len));
if (buf.len < 1) {
BT_WARN("Too short proxy configuration PDU");
return;
}
opcode = net_buf_simple_pull_u8(&buf);
switch (opcode) {
case BLE_MESH_PROXY_CFG_FILTER_SET:
filter_set(client, &buf);
send_filter_status(client, &rx, &buf);
break;
case BLE_MESH_PROXY_CFG_FILTER_ADD:
while (buf.len >= 2) {
uint16_t addr = net_buf_simple_pull_be16(&buf);
filter_add(client, addr, rx.ctx.addr == addr);
}
send_filter_status(client, &rx, &buf);
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_directed_proxy_server_solicitation(client, rx.sub);
#endif /* CONFIG_BLE_MESH_DF_SRV */
break;
case BLE_MESH_PROXY_CFG_FILTER_REMOVE:
while (buf.len >= 2) {
uint16_t addr = net_buf_simple_pull_be16(&buf);
filter_remove(client, addr);
}
send_filter_status(client, &rx, &buf);
break;
#if CONFIG_BLE_MESH_DF_SRV
case BLE_MESH_PROXY_CFG_DIRECTED_PROXY_CONTROL:
if (buf.len < 1) {
BT_WARN("Invalid Directed Proxy Control (len %d)", buf.len);
break;
}
if (rx.sub->directed_proxy != BLE_MESH_DIRECTED_PROXY_NOT_SUPPORTED) {
bt_mesh_directed_proxy_server_directed_proxy_ctrl_recv(client, &rx, &buf);
}
break;
#endif /* CONFIG_BLE_MESH_DF_SRV */
default:
BT_WARN("Unhandled configuration OpCode 0x%02x", opcode);
break;
}
}
static int beacon_send(struct bt_mesh_proxy_client *client, struct bt_mesh_subnet *sub)
{
NET_BUF_SIMPLE_DEFINE(buf, 28);
net_buf_simple_reserve(&buf, 1);
#if CONFIG_BLE_MESH_PROXY_PRIVACY
if (client->proxy_privacy == BLE_MESH_PROXY_PRIVACY_ENABLED) {
/* NOTE: Each time a Mesh Private beacon for a subnet is sent to a Proxy Client,
* the Random field in the Mesh Private beacon shall be regenerated.
*/
bt_mesh_private_beacon_update_random(sub);
bt_mesh_private_beacon_create(sub, &buf);
} else
#endif
{
bt_mesh_secure_beacon_create(sub, &buf);
}
return bt_mesh_proxy_server_segment_send(client->conn, BLE_MESH_PROXY_BEACON, &buf);
}
static void proxy_send_beacons(struct k_work *work)
{
struct bt_mesh_proxy_client *client = NULL;
int i;
client = CONTAINER_OF(work, struct bt_mesh_proxy_client, send_beacons);
/* Upon connection, the Proxy Server shall evaluate Proxy Privacy parameter
* for the connection and the Proxy Server shall retain the value of the
* Proxy Privacy parameter for the lifetime of the connection. The Proxy
* Server shall send a mesh beacon for each known subnet to the Proxy Client.
*
* When either the GATT Proxy state or the Node Identity state is enabled,
* the Proxy Privacy parameter for the connection shall be Disabled.
*
* When both the GATT Proxy state and the Node Identity state are disabled,
* and either the Private GATT Proxy state or the Private Node Identity state
* is enabled, the Proxy Privacy parameter for the connection shall be Enabled.
*/
for (i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (sub->net_idx != BLE_MESH_KEY_UNUSED) {
beacon_send(client, sub);
#if CONFIG_BLE_MESH_DF_SRV
if (sub->directed_proxy != BLE_MESH_DIRECTED_PROXY_NOT_SUPPORTED) {
bt_mesh_directed_proxy_server_directed_proxy_caps_status_send(client->conn, sub);
}
#endif /* CONFIG_BLE_MESH_DF_SRV */
}
#if 0
if (sub->net_idx != BLE_MESH_KEY_UNUSED) {
if (sub->proxy_privacy == BLE_MESH_PROXY_PRIVACY_DISABLED) {
beacon_send(client->conn, sub);
} else if (sub->proxy_privacy == BLE_MESH_PROXY_PRIVACY_ENABLED) {
#if CONFIG_BLE_MESH_PRB_SRV
/* TODO: Send Mesh Private Beacon */
#endif
}
}
#endif
}
}
void bt_mesh_proxy_server_beacon_send(struct bt_mesh_subnet *sub)
{
int i;
if (!sub) {
/* NULL means we send on all subnets */
for (i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
if (bt_mesh.sub[i].net_idx != BLE_MESH_KEY_UNUSED) {
bt_mesh_proxy_server_beacon_send(&bt_mesh.sub[i]);
}
}
return;
}
for (i = 0; i < ARRAY_SIZE(clients); i++) {
if (clients[i].conn) {
beacon_send(&clients[i], sub);
}
}
}
void bt_mesh_proxy_server_identity_start(struct bt_mesh_subnet *sub)
{
sub->node_id = BLE_MESH_NODE_IDENTITY_RUNNING;
sub->node_id_start = k_uptime_get_32();
/* Prioritize the recently enabled subnet */
next_idx = sub - bt_mesh.sub;
}
void bt_mesh_proxy_server_identity_stop(struct bt_mesh_subnet *sub)
{
sub->node_id = BLE_MESH_NODE_IDENTITY_STOPPED;
sub->node_id_start = 0U;
}
int bt_mesh_proxy_identity_enable(void)
{
int i, count = 0;
if (!bt_mesh_is_provisioned()) {
return -EAGAIN;
}
for (i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (sub->net_idx == BLE_MESH_KEY_UNUSED) {
continue;
}
if (sub->node_id == BLE_MESH_NODE_IDENTITY_NOT_SUPPORTED) {
continue;
}
bt_mesh_proxy_server_identity_start(sub);
count++;
}
if (count) {
bt_mesh_adv_update();
}
return 0;
}
#if CONFIG_BLE_MESH_PRB_SRV
void bt_mesh_proxy_server_private_identity_start(struct bt_mesh_subnet *sub)
{
sub->private_node_id = BLE_MESH_PRIVATE_NODE_IDENTITY_RUNNING;
sub->node_id_start = k_uptime_get_32();
/* Prioritize the recently enabled subnet */
next_idx = sub - bt_mesh.sub;
}
void bt_mesh_proxy_server_private_identity_stop(struct bt_mesh_subnet *sub)
{
sub->private_node_id = BLE_MESH_PRIVATE_NODE_IDENTITY_STOPPED;
sub->node_id_start = 0U;
}
bool bt_mesh_proxy_server_is_node_id_enable(void)
{
for (size_t i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
/* If the Node Identity state of the node for any subnet
* is 0x01 (i.e. running), return true.
*/
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (sub->net_idx != BLE_MESH_KEY_UNUSED &&
sub->node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_RUNNING) {
return true;
}
}
return false;
}
static bool is_exist_private_node_id_enable(void)
{
for (size_t i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
/* If the value of the Node Identity state of the node
* for any subnet is 0x01,If exist return true.
*/
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (sub->net_idx != BLE_MESH_KEY_UNUSED &&
sub->private_node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_RUNNING) {
return true;
}
}
return false;
}
int bt_mesh_proxy_private_identity_disable(void)
{
if (!bt_mesh_is_provisioned()) {
return -EAGAIN;
}
for (size_t i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
/* NOTE: Set private node identity state of all valid subnets disabled */
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (sub->net_idx == BLE_MESH_KEY_UNUSED) {
continue;
}
if (sub->private_node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_NOT_SUPPORTED) {
continue;
}
bt_mesh_proxy_server_private_identity_stop(sub);
}
return 0;
}
int bt_mesh_proxy_private_identity_enable(void)
{
int count = 0;
if (!bt_mesh_is_provisioned()) {
return -EAGAIN;
}
for (size_t i = 0U; i < ARRAY_SIZE(bt_mesh.sub); i++) {
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (sub->net_idx == BLE_MESH_KEY_UNUSED) {
continue;
}
if (sub->private_node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_NOT_SUPPORTED) {
continue;
}
bt_mesh_proxy_server_private_identity_start(sub);
count++;
}
if (count) {
bt_mesh_adv_update();
}
return 0;
}
#endif /* CONFIG_BLE_MESH_PRB_SRV */
#endif /* GATT_PROXY */
static void proxy_complete_pdu(struct bt_mesh_proxy_client *client)
{
switch (client->msg_type) {
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
case BLE_MESH_PROXY_NET_PDU:
BT_DBG("Mesh Network PDU");
bt_mesh_net_recv(&client->buf, 0, BLE_MESH_NET_IF_PROXY);
break;
case BLE_MESH_PROXY_BEACON:
BT_DBG("Mesh Beacon PDU");
bt_mesh_beacon_recv(&client->buf, 0);
break;
case BLE_MESH_PROXY_CONFIG:
BT_DBG("Mesh Configuration PDU");
proxy_cfg(client);
break;
#endif
#if CONFIG_BLE_MESH_PB_GATT
case BLE_MESH_PROXY_PROV:
BT_DBG("Mesh Provisioning PDU");
bt_mesh_pb_gatt_recv(client->conn, &client->buf);
break;
#endif
default:
BT_WARN("Unhandled Message Type 0x%02x", client->msg_type);
break;
}
net_buf_simple_reset(&client->buf);
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
if (client->msg_type < BLE_MESH_PROXY_PROV &&
client->proxy_msg_recv == false) {
client->proxy_msg_recv = true;
/**
* @Spec: P626
* When a new connection is established between a Proxy Client and the Directed Proxy Server, and the
* first message received from the Proxy Client is a successfully processed DIRECTED_PROXY_CONTROL
* message, then the Directed Proxy Server shall set the Proxy_Client_Type parameter to Directed Proxy Client,
* shall set the Use_Directed parameter to Disable for all subnets known to the Directed Proxy Server
* except the subnet identified by the received message;
* otherwise, the Directed Proxy Server shall set the Proxy_Client_Type parameter to Proxy Client.
*
* If the first message received is DIRECTED_PROXY_CONTROL, proxy_client_type will be set to Directed Proxy Client,
* But if device didn't receive DIRECTED_PROXY_CONTROL message and all received is normal proxy message, That
* client type will be always in UNSET state, because we set client type in handle function of DIRECTED_PROXY_CONTROL.
*
* So the flowing code was used to avoid that situation.
*/
if (client->proxy_client_type == BLE_MESH_PROXY_CLI_TYPE_UNSET) {
client->proxy_client_type = BLE_MESH_PROXY_CLI_TYPE_PROXY_CLIENT;
}
}
#endif
}
#define ATTR_IS_PROV(attr) (attr->user_data != NULL)
static ssize_t proxy_recv(struct bt_mesh_conn *conn,
const struct bt_mesh_gatt_attr *attr, const void *buf,
uint16_t len, uint16_t offset, uint8_t flags)
{
struct bt_mesh_proxy_client *client = find_client(conn);
const uint8_t *data = buf;
if (!client) {
BT_ERR("No Proxy Client found");
return -ENOTCONN;
}
if (len < 1) {
BT_WARN("Too small Proxy PDU");
return -EINVAL;
}
if (ATTR_IS_PROV(attr) != (BLE_MESH_PROXY_PDU_TYPE(data) == BLE_MESH_PROXY_PROV)) {
BT_WARN("Proxy PDU type doesn't match GATT service");
return -EINVAL;
}
if (len - 1 > net_buf_simple_tailroom(&client->buf)) {
BT_WARN("Too big proxy PDU");
return -EINVAL;
}
switch (BLE_MESH_PROXY_PDU_SAR(data)) {
case BLE_MESH_PROXY_SAR_COMP:
if (client->buf.len) {
BT_WARN("Complete PDU while a pending incomplete one");
return -EINVAL;
}
client->msg_type = BLE_MESH_PROXY_PDU_TYPE(data);
net_buf_simple_add_mem(&client->buf, data + 1, len - 1);
proxy_complete_pdu(client);
break;
case BLE_MESH_PROXY_SAR_FIRST:
if (client->buf.len) {
BT_WARN("First PDU while a pending incomplete one");
return -EINVAL;
}
k_delayed_work_submit(&client->sar_timer, BLE_MESH_PROXY_SAR_TIMEOUT);
client->msg_type = BLE_MESH_PROXY_PDU_TYPE(data);
net_buf_simple_add_mem(&client->buf, data + 1, len - 1);
break;
case BLE_MESH_PROXY_SAR_CONT:
if (!client->buf.len) {
BT_WARN("Continuation with no prior data");
return -EINVAL;
}
if (client->msg_type != BLE_MESH_PROXY_PDU_TYPE(data)) {
BT_WARN("Unexpected message type in continuation");
return -EINVAL;
}
k_delayed_work_submit(&client->sar_timer, BLE_MESH_PROXY_SAR_TIMEOUT);
net_buf_simple_add_mem(&client->buf, data + 1, len - 1);
break;
case BLE_MESH_PROXY_SAR_LAST:
if (!client->buf.len) {
BT_WARN("Last SAR PDU with no prior data");
return -EINVAL;
}
if (client->msg_type != BLE_MESH_PROXY_PDU_TYPE(data)) {
BT_WARN("Unexpected message type in last SAR PDU");
return -EINVAL;
}
k_delayed_work_cancel(&client->sar_timer);
net_buf_simple_add_mem(&client->buf, data + 1, len - 1);
proxy_complete_pdu(client);
break;
}
return len;
}
static int conn_count;
static void proxy_connected(struct bt_mesh_conn *conn, uint8_t err)
{
struct bt_mesh_proxy_client *client = NULL;
int i;
BT_DBG("conn %p err 0x%02x", conn, err);
conn_count++;
/* Since we use ADV_OPT_ONE_TIME */
proxy_adv_enabled = false;
#if CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX
/* Before re-enabling advertising, stop advertising
* the Service Data associated with the Private
* Network Identity type.
*/
bt_mesh_proxy_server_stop_solic_adv_priv_net_id();
#endif
/* Try to re-enable advertising in case it's possible */
if (conn_count < BLE_MESH_MAX_CONN) {
bt_mesh_adv_update();
}
for (client = NULL, i = 0; i < ARRAY_SIZE(clients); i++) {
if (!clients[i].conn) {
client = &clients[i];
break;
}
}
if (!client) {
BT_ERR("No free Proxy Client objects");
return;
}
client->conn = bt_mesh_conn_ref(conn);
client->filter_type = SRV_NONE;
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
(void)memset(client->filter, 0, sizeof(client->filter));
if (proxy_server_connect_cb) {
proxy_server_connect_cb(conn->handle);
}
#endif
net_buf_simple_reset(&client->buf);
}
static void proxy_disconnected(struct bt_mesh_conn *conn, uint8_t reason)
{
int i;
BT_DBG("conn %p reason 0x%02x", conn, reason);
conn_count--;
for (i = 0; i < ARRAY_SIZE(clients); i++) {
struct bt_mesh_proxy_client *client = &clients[i];
if (client->conn == conn) {
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
if (proxy_server_disconnect_cb) {
proxy_server_disconnect_cb(conn->handle, reason);
}
#endif
if (IS_ENABLED(CONFIG_BLE_MESH_PB_GATT) &&
client->filter_type == SRV_PROV) {
bt_mesh_pb_gatt_close(conn, reason);
}
#if CONFIG_BLE_MESH_PROXY_PRIVACY
client->proxy_privacy = BLE_MESH_PROXY_PRIVACY_DISABLED;
#endif
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER && CONFIG_BLE_MESH_PRB_SRV
k_delayed_work_cancel(&rand_upd_timer);
#endif
k_delayed_work_cancel(&client->sar_timer);
bt_mesh_conn_unref(client->conn);
client->conn = NULL;
break;
}
}
bt_mesh_adv_update();
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER && CONFIG_BLE_MESH_DF_SRV
if (i == ARRAY_SIZE(clients)) {
BT_WARN("Proxy disconnected, but no connection found");
return;
}
if (bt_mesh_directed_proxy_server_update_dep_node(NULL, &clients[i], 0)) {
BT_ERR("Proxy disconnected, failed to update dependent node");
}
#endif /* CONFIG_BLE_MESH_DF_SRV */
}
struct net_buf_simple *bt_mesh_proxy_server_get_buf(void)
{
struct net_buf_simple *buf = &clients[0].buf;
net_buf_simple_reset(buf);
return buf;
}
#if CONFIG_BLE_MESH_PB_GATT
static ssize_t prov_ccc_write(struct bt_mesh_conn *conn,
const struct bt_mesh_gatt_attr *attr,
const void *buf, uint16_t len,
uint16_t offset, uint8_t flags)
{
struct bt_mesh_proxy_client *client = NULL;
uint16_t *value = attr->user_data;
BT_DBG("len %u: %s", len, bt_hex(buf, len));
if (len != sizeof(*value)) {
return BLE_MESH_GATT_ERR(BLE_MESH_ATT_ERR_INVALID_ATTRIBUTE_LEN);
}
*value = sys_get_le16(buf);
if (*value != BLE_MESH_GATT_CCC_NOTIFY) {
BT_WARN("Client wrote 0x%04x instead enabling notify", *value);
return len;
}
/* If a connection exists there must be a client */
client = find_client(conn);
if (!client) {
BT_ERR("No client for connection %p", conn);
return 0;
}
if (client->filter_type == SRV_NONE) {
client->filter_type = SRV_PROV;
bt_mesh_pb_gatt_open(conn);
}
return len;
}
static ssize_t prov_ccc_read(struct bt_mesh_conn *conn,
const struct bt_mesh_gatt_attr *attr,
void *buf, uint16_t len, uint16_t offset)
{
uint16_t *value = attr->user_data;
return bt_mesh_gatts_attr_read(conn, attr, buf, len, offset, value,
sizeof(*value));
}
/* Mesh Provisioning Service Declaration */
static struct bt_mesh_gatt_attr prov_attrs[] = {
BLE_MESH_GATT_PRIMARY_SERVICE(BLE_MESH_UUID_MESH_PROV),
BLE_MESH_GATT_CHARACTERISTIC(BLE_MESH_UUID_MESH_PROV_DATA_IN,
BLE_MESH_GATT_CHRC_WRITE_WITHOUT_RESP),
BLE_MESH_GATT_DESCRIPTOR(BLE_MESH_UUID_MESH_PROV_DATA_IN, BLE_MESH_GATT_PERM_WRITE,
NULL, proxy_recv, (void *)1),
BLE_MESH_GATT_CHARACTERISTIC(BLE_MESH_UUID_MESH_PROV_DATA_OUT,
BLE_MESH_GATT_CHRC_NOTIFY),
BLE_MESH_GATT_DESCRIPTOR(BLE_MESH_UUID_MESH_PROV_DATA_OUT, BLE_MESH_GATT_PERM_NONE,
NULL, NULL, NULL),
/* Add custom CCC as clients need to be tracked individually */
BLE_MESH_GATT_DESCRIPTOR(BLE_MESH_UUID_GATT_CCC,
BLE_MESH_GATT_PERM_WRITE | BLE_MESH_GATT_PERM_READ,
prov_ccc_read, prov_ccc_write, &prov_ccc_val),
};
struct bt_mesh_gatt_service prov_svc = BLE_MESH_GATT_SERVICE(prov_attrs);
int bt_mesh_proxy_server_prov_enable(void)
{
int i;
if (gatt_svc == MESH_GATT_PROV) {
BT_WARN("%s, Already", __func__);
return -EALREADY;
}
if (gatt_svc != MESH_GATT_NONE) {
BT_WARN("%s, Busy", __func__);
return -EBUSY;
}
bt_mesh_gatts_service_start(&prov_svc);
gatt_svc = MESH_GATT_PROV;
prov_fast_adv = true;
for (i = 0; i < ARRAY_SIZE(clients); i++) {
if (clients[i].conn) {
clients[i].filter_type = SRV_PROV;
}
}
return 0;
}
int bt_mesh_proxy_server_prov_disable(bool disconnect)
{
int i;
if (gatt_svc == MESH_GATT_NONE) {
BT_WARN("%s, Already", __func__);
return -EALREADY;
}
if (gatt_svc != MESH_GATT_PROV) {
BT_WARN("%s, Busy", __func__);
return -EBUSY;
}
bt_mesh_gatts_service_stop(&prov_svc);
gatt_svc = MESH_GATT_NONE;
for (i = 0; i < ARRAY_SIZE(clients); i++) {
struct bt_mesh_proxy_client *client = &clients[i];
if (!client->conn || client->filter_type != SRV_PROV) {
continue;
}
if (disconnect) {
bt_mesh_gatts_disconnect(client->conn, 0x13);
} else {
bt_mesh_pb_gatt_close(client->conn, CLOSE_REASON_SUCCESS);
client->filter_type = SRV_NONE;
}
}
bt_mesh_adv_update();
return 0;
}
#endif /* CONFIG_BLE_MESH_PB_GATT */
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
static ssize_t proxy_ccc_write(struct bt_mesh_conn *conn,
const struct bt_mesh_gatt_attr *attr,
const void *buf, uint16_t len,
uint16_t offset, uint8_t flags)
{
struct bt_mesh_proxy_client *client = NULL;
uint16_t value = 0U;
BT_DBG("len %u: %s", len, bt_hex(buf, len));
if (len != sizeof(value)) {
return BLE_MESH_GATT_ERR(BLE_MESH_ATT_ERR_INVALID_ATTRIBUTE_LEN);
}
value = sys_get_le16(buf);
if (value != BLE_MESH_GATT_CCC_NOTIFY) {
BT_WARN("Client wrote 0x%04x instead enabling notify", value);
return len;
}
/* If a connection exists there must be a client */
client = find_client(conn);
if (!client) {
BT_ERR("No client for connection %p", conn);
return 0;
}
/* Spec section 6.7
* Upon connection, the Proxy Server shall evaluate Proxy Privacy parameter (for GATT Proxy bearer see
* Section 7.2.2.2.6) for the connection and the Proxy Server shall retain the value of the Proxy Privacy
* parameter for the lifetime of the connection. The Proxy Server shall send a mesh beacon for each known
* subnet to the Proxy Client
*/
#if CONFIG_BLE_MESH_PRB_SRV
if (bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED ||
bt_mesh_proxy_server_is_node_id_enable()) {
client->proxy_privacy = BLE_MESH_PROXY_PRIVACY_DISABLED;
} else if (bt_mesh_private_gatt_proxy_state_get() == BLE_MESH_PRIVATE_GATT_PROXY_ENABLED ||
is_exist_private_node_id_enable()) {
client->proxy_privacy = BLE_MESH_PROXY_PRIVACY_ENABLED;
}
#endif /* CONFIG_BLE_MESH_PRB_SRV */
if (client->filter_type == SRV_NONE) {
client->filter_type = SRV_WHITELIST;
k_delayed_work_submit(&client->send_beacons, K_MSEC(15));
}
if (client->proxy_client_type == 0) {
client->proxy_client_type = BLE_MESH_PROXY_CLI_TYPE_UNSET;
}
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_directed_proxy_server_connected(client);
#endif /* CONFIG_BLE_MESH_DF_SRV */
return len;
}
static ssize_t proxy_ccc_read(struct bt_mesh_conn *conn,
const struct bt_mesh_gatt_attr *attr,
void *buf, uint16_t len, uint16_t offset)
{
uint16_t *value = attr->user_data;
return bt_mesh_gatts_attr_read(conn, attr, buf, len, offset, value,
sizeof(*value));
}
/* Mesh Proxy Service Declaration */
static struct bt_mesh_gatt_attr proxy_attrs[] = {
BLE_MESH_GATT_PRIMARY_SERVICE(BLE_MESH_UUID_MESH_PROXY),
BLE_MESH_GATT_CHARACTERISTIC(BLE_MESH_UUID_MESH_PROXY_DATA_IN,
BLE_MESH_GATT_CHRC_WRITE_WITHOUT_RESP),
BLE_MESH_GATT_DESCRIPTOR(BLE_MESH_UUID_MESH_PROXY_DATA_IN, BLE_MESH_GATT_PERM_WRITE,
NULL, proxy_recv, NULL),
BLE_MESH_GATT_CHARACTERISTIC(BLE_MESH_UUID_MESH_PROXY_DATA_OUT,
BLE_MESH_GATT_CHRC_NOTIFY),
BLE_MESH_GATT_DESCRIPTOR(BLE_MESH_UUID_MESH_PROXY_DATA_OUT, BLE_MESH_GATT_PERM_NONE,
NULL, NULL, NULL),
/* Add custom CCC as clients need to be tracked individually */
BLE_MESH_GATT_DESCRIPTOR(BLE_MESH_UUID_GATT_CCC,
BLE_MESH_GATT_PERM_READ | BLE_MESH_GATT_PERM_WRITE,
proxy_ccc_read, proxy_ccc_write, &proxy_ccc_val),
};
struct bt_mesh_gatt_service proxy_svc = BLE_MESH_GATT_SERVICE(proxy_attrs);
int bt_mesh_proxy_server_gatt_enable(void)
{
int i;
if (gatt_svc == MESH_GATT_PROXY) {
BT_WARN("%s, Already", __func__);
return -EALREADY;
}
if (gatt_svc != MESH_GATT_NONE) {
BT_WARN("%s, Busy", __func__);
return -EBUSY;
}
bt_mesh_gatts_service_start(&proxy_svc);
gatt_svc = MESH_GATT_PROXY;
for (i = 0; i < ARRAY_SIZE(clients); i++) {
if (clients[i].conn) {
clients[i].filter_type = SRV_WHITELIST;
}
}
return 0;
}
void bt_mesh_proxy_server_gatt_disconnect(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(clients); i++) {
struct bt_mesh_proxy_client *client = &clients[i];
if (client->conn && (client->filter_type == SRV_WHITELIST ||
client->filter_type == SRV_BLACKLIST)) {
client->filter_type = SRV_NONE;
bt_mesh_gatts_disconnect(client->conn, 0x13);
}
}
}
int bt_mesh_proxy_server_gatt_disable(void)
{
if (gatt_svc == MESH_GATT_NONE) {
BT_WARN("%s, Already", __func__);
return -EALREADY;
}
if (gatt_svc != MESH_GATT_PROXY) {
BT_WARN("%s, Busy", __func__);
return -EBUSY;
}
bt_mesh_proxy_server_gatt_disconnect();
bt_mesh_gatts_service_stop(&proxy_svc);
gatt_svc = MESH_GATT_NONE;
return 0;
}
void bt_mesh_proxy_server_addr_add(struct net_buf_simple *buf, uint16_t addr)
{
struct bt_mesh_proxy_client *client = CONTAINER_OF(buf,
struct bt_mesh_proxy_client,
buf);
BT_DBG("filter_type %u addr 0x%04x", client->filter_type, addr);
if (client->filter_type == SRV_WHITELIST) {
filter_add(client, addr, true);
} else if (client->filter_type == SRV_BLACKLIST) {
filter_remove(client, addr);
}
}
static bool client_filter_match(struct bt_mesh_proxy_client *client,
uint16_t addr)
{
int i;
BT_DBG("filter_type %u addr 0x%04x", client->filter_type, addr);
if (client->filter_type == SRV_BLACKLIST) {
for (i = 0; i < ARRAY_SIZE(client->filter); i++) {
if (client->filter[i].addr == addr) {
return false;
}
}
return true;
}
if (addr == BLE_MESH_ADDR_ALL_NODES) {
return true;
}
if (client->filter_type == SRV_WHITELIST) {
for (i = 0; i < ARRAY_SIZE(client->filter); i++) {
if (client->filter[i].addr == addr) {
return true;
}
}
}
return false;
}
bool bt_mesh_proxy_server_relay(struct net_buf_simple *buf, uint16_t dst)
{
bool relayed = false;
int i;
BT_DBG("%u bytes to dst 0x%04x", buf->len, dst);
for (i = 0; i < ARRAY_SIZE(clients); i++) {
struct bt_mesh_proxy_client *client = &clients[i];
NET_BUF_SIMPLE_DEFINE(msg, 32);
if (!client->conn) {
continue;
}
if (!client_filter_match(client, dst)) {
continue;
}
/* Proxy PDU sending modifies the original buffer,
* so we need to make a copy.
*/
net_buf_simple_reserve(&msg, 1);
net_buf_simple_add_mem(&msg, buf->data, buf->len);
bt_mesh_proxy_server_send(client->conn, BLE_MESH_PROXY_NET_PDU, &msg);
relayed = true;
}
return relayed;
}
#endif /* CONFIG_BLE_MESH_GATT_PROXY_SERVER */
static int proxy_send(struct bt_mesh_conn *conn, const void *data, uint16_t len)
{
BT_DBG("%u bytes: %s", len, bt_hex(data, len));
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
if (gatt_svc == MESH_GATT_PROXY) {
return bt_mesh_gatts_notify(conn, &proxy_attrs[4], data, len);
}
#endif
#if CONFIG_BLE_MESH_PB_GATT
if (gatt_svc == MESH_GATT_PROV) {
return bt_mesh_gatts_notify(conn, &prov_attrs[4], data, len);
}
#endif
return 0;
}
int bt_mesh_proxy_server_segment_send(struct bt_mesh_conn *conn, uint8_t type,
struct net_buf_simple *msg)
{
uint16_t mtu = 0U;
BT_DBG("conn %p type 0x%02x len %u: %s", conn, type, msg->len,
bt_hex(msg->data, msg->len));
/* ATT_MTU - OpCode (1 byte) - Handle (2 bytes) */
mtu = bt_mesh_gatt_get_mtu(conn) - 3;
if (mtu > msg->len) {
net_buf_simple_push_u8(msg, BLE_MESH_PROXY_PDU_HDR(BLE_MESH_PROXY_SAR_COMP, type));
return proxy_send(conn, msg->data, msg->len);
}
net_buf_simple_push_u8(msg, BLE_MESH_PROXY_PDU_HDR(BLE_MESH_PROXY_SAR_FIRST, type));
proxy_send(conn, msg->data, mtu);
net_buf_simple_pull(msg, mtu);
while (msg->len) {
if (msg->len + 1 < mtu) {
net_buf_simple_push_u8(msg, BLE_MESH_PROXY_PDU_HDR(BLE_MESH_PROXY_SAR_LAST, type));
proxy_send(conn, msg->data, msg->len);
break;
}
net_buf_simple_push_u8(msg, BLE_MESH_PROXY_PDU_HDR(BLE_MESH_PROXY_SAR_CONT, type));
proxy_send(conn, msg->data, mtu);
net_buf_simple_pull(msg, mtu);
}
return 0;
}
int bt_mesh_proxy_server_send(struct bt_mesh_conn *conn, uint8_t type,
struct net_buf_simple *msg)
{
struct bt_mesh_proxy_client *client = find_client(conn);
if (!client) {
BT_ERR("No Proxy Client found");
return -ENOTCONN;
}
if ((client->filter_type == SRV_PROV) != (type == BLE_MESH_PROXY_PROV)) {
BT_ERR("Invalid PDU type for Proxy Client");
return -EINVAL;
}
return bt_mesh_proxy_server_segment_send(conn, type, msg);
}
#if CONFIG_BLE_MESH_PB_GATT
static uint8_t prov_svc_data[20] = { 0x27, 0x18, };
static const struct bt_mesh_adv_data prov_ad[] = {
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_FLAGS, (BLE_MESH_AD_GENERAL | BLE_MESH_AD_NO_BREDR)),
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_UUID16_ALL, 0x27, 0x18),
BLE_MESH_ADV_DATA(BLE_MESH_DATA_SVC_DATA16, prov_svc_data, sizeof(prov_svc_data)),
};
#endif /* PB_GATT */
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
#define NET_ID_LEN 11
#define NODE_ID_LEN 19
#define PRIVATE_NET_ID_LEN 19
#define PRIVATE_NODE_ID_LEN 19
#define PROXY_ADV_MAX_LEN 19
#define NODE_ID_TIMEOUT K_SECONDS(CONFIG_BLE_MESH_NODE_ID_TIMEOUT)
/* Note:
* The "proxy_svc_data" should be large enough to hold the maximum
* payload of the Node ID/Net ID/Private Node ID/Private Net ID.
*/
static uint8_t proxy_svc_data[PROXY_ADV_MAX_LEN] = { 0x28, 0x18, };
static const struct bt_mesh_adv_data node_id_ad[] = {
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_FLAGS, (BLE_MESH_AD_GENERAL | BLE_MESH_AD_NO_BREDR)),
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_UUID16_ALL, 0x28, 0x18),
BLE_MESH_ADV_DATA(BLE_MESH_DATA_SVC_DATA16, proxy_svc_data, NODE_ID_LEN),
};
static const struct bt_mesh_adv_data net_id_ad[] = {
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_FLAGS, (BLE_MESH_AD_GENERAL | BLE_MESH_AD_NO_BREDR)),
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_UUID16_ALL, 0x28, 0x18),
BLE_MESH_ADV_DATA(BLE_MESH_DATA_SVC_DATA16, proxy_svc_data, NET_ID_LEN),
};
#if CONFIG_BLE_MESH_PRB_SRV || CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX
static const struct bt_mesh_adv_data private_node_id_ad[] = {
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_FLAGS, (BLE_MESH_AD_GENERAL | BLE_MESH_AD_NO_BREDR)),
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_UUID16_ALL, 0x28, 0x18),
BLE_MESH_ADV_DATA(BLE_MESH_DATA_SVC_DATA16, proxy_svc_data, PRIVATE_NODE_ID_LEN),
};
static const struct bt_mesh_adv_data private_net_id_ad[] = {
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_FLAGS, (BLE_MESH_AD_GENERAL | BLE_MESH_AD_NO_BREDR)),
BLE_MESH_ADV_DATA_BYTES(BLE_MESH_DATA_UUID16_ALL, 0x28, 0x18),
BLE_MESH_ADV_DATA(BLE_MESH_DATA_SVC_DATA16, proxy_svc_data, PRIVATE_NET_ID_LEN),
};
#endif /* CONFIG_BLE_MESH_PRB_SRV */
static size_t gatt_proxy_adv_create(struct bt_mesh_adv_data *proxy_sd)
{
const char *name = device_name;
size_t name_len = strlen(name);
/* One octet for Length, and another octet for AD type */
size_t sd_space = 29;
if (name_len > sd_space) {
proxy_sd->type = BLE_MESH_DATA_NAME_SHORTENED;
proxy_sd->data_len = sd_space;
} else {
proxy_sd->type = BLE_MESH_DATA_NAME_COMPLETE;
proxy_sd->data_len = name_len;
}
proxy_sd->data = (const uint8_t *)name;
return 1;
}
static int node_id_adv(struct bt_mesh_subnet *sub)
{
struct bt_mesh_adv_data proxy_sd = {0};
size_t proxy_sd_len = 0U;
uint8_t tmp[16] = {0};
int err = 0;
proxy_svc_data[2] = BLE_MESH_PROXY_ADV_NODE_ID;
err = bt_mesh_rand(proxy_svc_data + 11, 8);
if (err) {
return err;
}
(void)memset(tmp, 0, 6);
memcpy(tmp + 6, proxy_svc_data + 11, 8);
sys_put_be16(bt_mesh_primary_addr(), tmp + 14);
err = bt_mesh_encrypt_be(sub->keys[sub->kr_flag].identity, tmp, tmp);
if (err) {
return err;
}
memcpy(proxy_svc_data + 3, tmp + 8, 8);
proxy_sd_len = gatt_proxy_adv_create(&proxy_sd);
err = bt_le_adv_start(&fast_adv_param, node_id_ad,
ARRAY_SIZE(node_id_ad), &proxy_sd, proxy_sd_len);
if (err) {
BT_WARN("Failed to advertise using Node ID (err %d)", err);
return err;
}
proxy_adv_enabled = true;
return 0;
}
static int net_id_adv(struct bt_mesh_subnet *sub)
{
struct bt_mesh_adv_data proxy_sd = {0};
size_t proxy_sd_len = 0U;
int err = 0;
proxy_svc_data[2] = BLE_MESH_PROXY_ADV_NET_ID;
BT_DBG("Advertising with NetId %s",
bt_hex(sub->keys[sub->kr_flag].net_id, 8));
memcpy(proxy_svc_data + 3, sub->keys[sub->kr_flag].net_id, 8);
proxy_sd_len = gatt_proxy_adv_create(&proxy_sd);
err = bt_le_adv_start(&slow_adv_param, net_id_ad,
ARRAY_SIZE(net_id_ad), &proxy_sd, proxy_sd_len);
if (err) {
BT_WARN("Failed to advertise using Network ID (err %d)", err);
return err;
}
proxy_adv_enabled = true;
return 0;
}
#if CONFIG_BLE_MESH_PRB_SRV
void bt_mesh_proxy_server_update_net_id_rand(void)
{
k_delayed_work_submit(&rand_upd_timer, RAND_UPDATE_INTERVAL);
}
void bt_mesh_proxy_server_update_net_id_rand_stop(void)
{
k_delayed_work_cancel(&rand_upd_timer);
}
static void random_update_timeout(struct k_work *work)
{
int err = 0;
err = bt_mesh_rand(net_id_random, 8);
if (err) {
BT_ERR("Generate random value failed");
return;
}
k_delayed_work_submit(&rand_upd_timer, RAND_UPDATE_INTERVAL);
}
static int private_node_id_adv(struct bt_mesh_subnet *sub)
{
struct bt_mesh_adv_data proxy_sd = {0};
size_t proxy_sd_len = 0U;
uint8_t tmp[16] = {0};
int err = 0;
proxy_svc_data[2] = BLE_MESH_PROXY_ADV_PRIVATE_NODE_ID;
err = bt_mesh_rand(proxy_svc_data + 11, 8);
if (err) {
return err;
}
memset(tmp, 0, 5);
tmp[5] = 0x03;
memcpy(tmp + 6, proxy_svc_data + 11, 8);
sys_put_be16(bt_mesh_primary_addr(), tmp + 14);
err = bt_mesh_encrypt_be(sub->keys[sub->kr_flag].identity, tmp, tmp);
if (err) {
return err;
}
memcpy(proxy_svc_data + 3, tmp + 8, 8);
proxy_sd_len = gatt_proxy_adv_create(&proxy_sd);
err = bt_le_adv_start(&fast_adv_param, private_node_id_ad,
ARRAY_SIZE(private_node_id_ad), &proxy_sd, proxy_sd_len);
if (err) {
BT_WARN("Failed to advertise with Private Node ID (err %d)", err);
return err;
}
proxy_adv_enabled = true;
return 0;
}
#endif /* CONFIG_BLE_MESH_PRB_SRV */
#if (CONFIG_BLE_MESH_PRB_SRV || \
CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX)
static int private_net_id_adv(struct bt_mesh_subnet *sub)
{
struct bt_mesh_adv_data proxy_sd = {0};
size_t proxy_sd_len = 0U;
uint8_t tmp[16] = {0};
int err = 0;
proxy_svc_data[2] = BLE_MESH_PROXY_ADV_PRIVATE_NET_ID;
/* TODO:
* The Private Network Identity advertisements shall use a resolvable private
* address or a non-resolvable private address in the AdvA field of the connectable
* advertising PDU. The address used for the AdvA field shall be regenerated
* whenever the Random field is regenerated.
*/
/* The Random field should be updated every 10 minutes. */
memcpy(proxy_svc_data + 11, net_id_random, 8);
memcpy(tmp, sub->keys[sub->kr_flag].net_id, 8);
memcpy(tmp + 8, net_id_random, 8);
err = bt_mesh_encrypt_be(sub->keys[sub->kr_flag].identity, tmp, tmp);
if (err) {
return err;
}
memcpy(proxy_svc_data + 3, tmp + 8, 8); /* Hash */
proxy_sd_len = gatt_proxy_adv_create(&proxy_sd);
err = bt_le_adv_start(&fast_adv_param, private_net_id_ad,
ARRAY_SIZE(private_net_id_ad), &proxy_sd, proxy_sd_len);
if (err) {
BT_WARN("Failed to advertise with Private Net ID (err %d)", err);
return err;
}
proxy_adv_enabled = true;
return 0;
}
#endif /* (CONFIG_BLE_MESH_PRB_SRV || \
CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX) */
static bool advertise_subnet(struct bt_mesh_subnet *sub)
{
if (sub->net_idx == BLE_MESH_KEY_UNUSED) {
return false;
}
return (sub->node_id == BLE_MESH_NODE_IDENTITY_RUNNING ||
bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED
#if CONFIG_BLE_MESH_PRB_SRV
|| sub->private_node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_RUNNING ||
bt_mesh_private_gatt_proxy_state_get() == BLE_MESH_PRIVATE_GATT_PROXY_ENABLED
#endif
);
}
static struct bt_mesh_subnet *next_sub(void)
{
struct bt_mesh_subnet *sub = NULL;
int i;
for (i = next_idx; i < ARRAY_SIZE(bt_mesh.sub); i++) {
sub = &bt_mesh.sub[i];
if (advertise_subnet(sub)) {
next_idx = (i + 1) % ARRAY_SIZE(bt_mesh.sub);
return sub;
}
}
/* If among [next_idx, ARRAY_SIZE(bt_mesh.sub)], there is no subnet
* to advertise, then try to start advertising from Primary subnet.
*/
for (i = 0; i < next_idx; i++) {
sub = &bt_mesh.sub[i];
if (advertise_subnet(sub)) {
next_idx = (i + 1) % ARRAY_SIZE(bt_mesh.sub);
return sub;
}
}
return NULL;
}
static int sub_count(void)
{
int i, count = 0;
for (i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
if (advertise_subnet(sub)) {
count++;
}
}
return count;
}
static int32_t gatt_proxy_advertise(struct bt_mesh_subnet *sub)
{
int32_t remaining = K_FOREVER;
int subnet_count = 0;
uint32_t active = 0U;
if (conn_count == BLE_MESH_MAX_CONN) {
BT_WARN("Connectable advertising deferred (max connections %d)", conn_count);
return remaining;
}
if (!sub) {
BT_WARN("No subnets to advertise on");
return remaining;
}
if (sub->node_id == BLE_MESH_NODE_IDENTITY_RUNNING) {
active = k_uptime_get_32() - sub->node_id_start;
if (active < NODE_ID_TIMEOUT) {
remaining = NODE_ID_TIMEOUT - active;
BT_DBG("Node ID active for %u ms, %d ms remaining", active, remaining);
node_id_adv(sub);
} else {
bt_mesh_proxy_server_identity_stop(sub);
BT_DBG("Node ID stopped");
}
}
#if CONFIG_BLE_MESH_PRB_SRV
else if (sub->private_node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_RUNNING) {
active = k_uptime_get_32() - sub->node_id_start;
if (active < NODE_ID_TIMEOUT) {
remaining = NODE_ID_TIMEOUT - active;
BT_DBG("Private Node ID active for %u ms, %d ms remaining", active, remaining);
private_node_id_adv(sub);
} else {
bt_mesh_proxy_server_private_identity_stop(sub);
BT_DBG("Private Node ID stopped");
}
}
#endif /* CONFIG_BLE_MESH_PRB_SRV */
if (sub->node_id == BLE_MESH_NODE_IDENTITY_STOPPED
#if CONFIG_BLE_MESH_PRB_SRV
&& sub->private_node_id == BLE_MESH_PRIVATE_NODE_IDENTITY_STOPPED
#endif
) {
if (bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED) {
net_id_adv(sub);
}
#if CONFIG_BLE_MESH_PRB_SRV
else if (bt_mesh_private_gatt_proxy_state_get() == BLE_MESH_PRIVATE_GATT_PROXY_ENABLED) {
private_net_id_adv(sub);
}
#endif
}
subnet_count = sub_count();
BT_DBG("sub_count %u", subnet_count);
if (subnet_count > 1) {
int32_t max_timeout = 0;
/* We use NODE_ID_TIMEOUT as a starting point since it may
* be less than 60 seconds. Divide this period into at least
* 6 slices, but make sure that a slice is at least one
* second long (to avoid excessive rotation).
*/
max_timeout = NODE_ID_TIMEOUT / MAX(subnet_count, 6);
max_timeout = MAX(max_timeout, K_SECONDS(1));
if (remaining > max_timeout || remaining < 0) {
remaining = max_timeout;
}
}
BT_DBG("Advertising %d ms for net_idx 0x%04x", remaining, sub->net_idx);
return remaining;
}
#endif /* GATT_PROXY */
#if CONFIG_BLE_MESH_PB_GATT
static size_t gatt_prov_adv_create(struct bt_mesh_adv_data prov_sd[2])
{
const char *name = device_name;
size_t name_len = strlen(name);
size_t prov_sd_len = 0U;
size_t sd_space = 31U;
if (bt_mesh_prov_get() == NULL) {
BT_ERR("No provisioning context provided");
return 0;
}
memcpy(prov_svc_data + 2, bt_mesh_prov_get()->uuid, 16);
/* According CSS, all the field within adv data shall be little-endian */
sys_put_le16(bt_mesh_prov_get()->oob_info, prov_svc_data + 18);
if (bt_mesh_prov_get()->uri) {
size_t uri_len = strlen(bt_mesh_prov_get()->uri);
if (uri_len > 29) {
/* There's no way to shorten an URI */
BT_WARN("Too long URI to fit advertising packet");
} else {
prov_sd[0].type = BLE_MESH_DATA_URI;
prov_sd[0].data_len = uri_len;
prov_sd[0].data = (const uint8_t *)bt_mesh_prov_get()->uri;
sd_space -= 2 + uri_len;
prov_sd_len++;
}
}
if (sd_space > 2 && name_len > 0) {
sd_space -= 2;
if (sd_space < name_len) {
prov_sd[prov_sd_len].type = BLE_MESH_DATA_NAME_SHORTENED;
prov_sd[prov_sd_len].data_len = sd_space;
} else {
prov_sd[prov_sd_len].type = BLE_MESH_DATA_NAME_COMPLETE;
prov_sd[prov_sd_len].data_len = name_len;
}
prov_sd[prov_sd_len].data = (const uint8_t *)name;
prov_sd_len++;
}
return prov_sd_len;
}
#endif /* CONFIG_BLE_MESH_PB_GATT */
#if CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX
static int32_t solic_adv_private_net_id(void)
{
uint16_t net_idx = BLE_MESH_KEY_UNUSED;
struct bt_mesh_subnet *sub = NULL;
int32_t remaining = 0;
remaining = bt_mesh_proxy_server_get_solic_adv_remaining();
if (remaining == 0) {
return 0;
}
net_idx = bt_mesh_proxy_server_get_solic_adv_net_idx();
if (net_idx == BLE_MESH_KEY_UNUSED) {
return 0;
}
sub = bt_mesh_subnet_get(net_idx);
if (sub == NULL) {
return 0;
}
private_net_id_adv(sub);
return remaining;
}
#endif /* CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX */
int32_t bt_mesh_proxy_server_adv_start(void)
{
if (gatt_svc == MESH_GATT_NONE) {
return K_FOREVER;
}
#if CONFIG_BLE_MESH_PB_GATT
if (prov_fast_adv) {
prov_start_time = k_uptime_get_32();
}
if (!bt_mesh_is_provisioned()) {
const struct bt_mesh_adv_param *param;
struct bt_mesh_adv_data prov_sd[2];
size_t prov_sd_len;
if (k_uptime_get_32() - prov_start_time < K_SECONDS(60)) {
param = &fast_adv_param;
} else {
param = &slow_adv_param;
}
prov_sd_len = gatt_prov_adv_create(prov_sd);
if (bt_le_adv_start(param, prov_ad, ARRAY_SIZE(prov_ad),
prov_sd, prov_sd_len) == 0) {
proxy_adv_enabled = true;
/* Advertise 60 seconds using fast interval */
if (prov_fast_adv) {
prov_fast_adv = false;
return K_SECONDS(60);
}
}
}
#endif /* PB_GATT */
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
if (bt_mesh_is_provisioned()) {
#if CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX
/* When the server starts advertising with Private Network Identity
* as a result of the reception of a Solicitation PDU, the server
* shall only advertise the subnet corresponding to the network key
* that is used to authenticate the Solicitation PDU; otherwise, the
* server shall interleave the advertising of each of its subnets.
*/
int32_t remaining = solic_adv_private_net_id();
if (remaining) {
return remaining;
}
#endif /* CONFIG_BLE_MESH_PROXY_SOLIC_PDU_RX */
return gatt_proxy_advertise(next_sub());
}
#endif /* GATT_PROXY */
return K_FOREVER;
}
void bt_mesh_proxy_server_adv_stop(void)
{
int err = 0;
BT_DBG("adv_enabled %u", proxy_adv_enabled);
if (!proxy_adv_enabled) {
return;
}
err = bt_le_adv_stop();
if (err) {
BT_ERR("Failed to stop advertising (err %d)", err);
} else {
proxy_adv_enabled = false;
}
}
static struct bt_mesh_conn_cb conn_callbacks = {
.connected = proxy_connected,
.disconnected = proxy_disconnected,
};
int bt_mesh_proxy_server_init(void)
{
int i;
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
bt_mesh_gatts_service_register(&proxy_svc);
#endif
#if CONFIG_BLE_MESH_PB_GATT
bt_mesh_gatts_service_register(&prov_svc);
#endif
/* Initialize the client receive buffers */
for (i = 0; i < ARRAY_SIZE(clients); i++) {
struct bt_mesh_proxy_client *client = &clients[i];
client->buf.size = BLE_MESH_PROXY_BUF_SIZE;
client->buf.__buf = client_buf_data + (i * BLE_MESH_PROXY_BUF_SIZE);
#if defined(CONFIG_BLE_MESH_GATT_PROXY_SERVER)
k_delayed_work_init(&client->send_beacons, proxy_send_beacons);
#endif
k_delayed_work_init(&client->sar_timer, proxy_sar_timeout);
}
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER && CONFIG_BLE_MESH_PRB_SRV
if (k_delayed_work_init(&rand_upd_timer, random_update_timeout)) {
BT_ERR("Failed to create a random update timer");
return -EIO;
}
#endif
bt_mesh_gatts_conn_cb_register(&conn_callbacks);
strncpy(device_name, "ESP-BLE-MESH", DEVICE_NAME_SIZE);
return bt_mesh_gatts_set_local_device_name(device_name);
}
#if CONFIG_BLE_MESH_DEINIT
int bt_mesh_proxy_server_deinit(void)
{
int i;
proxy_adv_enabled = false;
gatt_svc = MESH_GATT_NONE;
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
bt_mesh_gatts_service_deregister(&proxy_svc);
next_idx = 0;
#endif
#if CONFIG_BLE_MESH_PB_GATT
bt_mesh_gatts_service_deregister(&prov_svc);
#endif
for (i = 0; i < ARRAY_SIZE(clients); i++) {
struct bt_mesh_proxy_client *client = &clients[i];
#if defined(CONFIG_BLE_MESH_GATT_PROXY_SERVER)
k_delayed_work_free(&client->send_beacons);
#endif
k_delayed_work_free(&client->sar_timer);
memset(client, 0, sizeof(struct bt_mesh_proxy_client));
}
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER && CONFIG_BLE_MESH_PRB_SRV
k_delayed_work_free(&rand_upd_timer);
#endif
memset(client_buf_data, 0, sizeof(client_buf_data));
memset(device_name, 0, sizeof(device_name));
bt_mesh_gatts_conn_cb_deregister();
conn_count = 0;
return 0;
}
#endif /* CONFIG_BLE_MESH_DEINIT */
#endif /* (CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PB_GATT) || \
CONFIG_BLE_MESH_GATT_PROXY_SERVER */
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