| /* Bluetooth Mesh */ |
| |
| /* |
| * Copyright (c) 2017 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr.h> |
| #include <sys/byteorder.h> |
| |
| #include <net/buf.h> |
| #include <bluetooth/bluetooth.h> |
| #include <bluetooth/conn.h> |
| #include <bluetooth/gatt.h> |
| #include <bluetooth/mesh.h> |
| |
| #define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_MESH_DEBUG_PROXY) |
| #define LOG_MODULE_NAME bt_mesh_proxy |
| #include "common/log.h" |
| |
| #include "mesh.h" |
| #include "adv.h" |
| #include "net.h" |
| #include "rpl.h" |
| #include "transport.h" |
| #include "prov.h" |
| #include "beacon.h" |
| #include "foundation.h" |
| #include "access.h" |
| #include "proxy.h" |
| |
| #define PDU_TYPE(data) (data[0] & BIT_MASK(6)) |
| #define PDU_SAR(data) (data[0] >> 6) |
| |
| /* Mesh Profile 1.0 Section 6.6: |
| * "The timeout for the SAR transfer is 20 seconds. When the timeout |
| * expires, the Proxy Server shall disconnect." |
| */ |
| #define PROXY_SAR_TIMEOUT K_SECONDS(20) |
| |
| #define SAR_COMPLETE 0x00 |
| #define SAR_FIRST 0x01 |
| #define SAR_CONT 0x02 |
| #define SAR_LAST 0x03 |
| |
| #define CFG_FILTER_SET 0x00 |
| #define CFG_FILTER_ADD 0x01 |
| #define CFG_FILTER_REMOVE 0x02 |
| #define CFG_FILTER_STATUS 0x03 |
| |
| #define PDU_HDR(sar, type) (sar << 6 | (type & BIT_MASK(6))) |
| |
| #define CLIENT_BUF_SIZE 65 |
| |
| #if defined(CONFIG_BT_MESH_DEBUG_USE_ID_ADDR) |
| #define ADV_OPT_USE_IDENTITY BT_LE_ADV_OPT_USE_IDENTITY |
| #else |
| #define ADV_OPT_USE_IDENTITY 0 |
| #endif |
| |
| #if defined(CONFIG_BT_MESH_PROXY_USE_DEVICE_NAME) |
| #define ADV_OPT_USE_NAME BT_LE_ADV_OPT_USE_NAME |
| #else |
| #define ADV_OPT_USE_NAME 0 |
| #endif |
| |
| #define ADV_OPT_PROV \ |
| (BT_LE_ADV_OPT_CONNECTABLE | BT_LE_ADV_OPT_SCANNABLE | \ |
| BT_LE_ADV_OPT_ONE_TIME | ADV_OPT_USE_IDENTITY | \ |
| BT_LE_ADV_OPT_USE_NAME) |
| |
| #define ADV_OPT_PROXY \ |
| (BT_LE_ADV_OPT_CONNECTABLE | BT_LE_ADV_OPT_SCANNABLE | \ |
| BT_LE_ADV_OPT_ONE_TIME | ADV_OPT_USE_IDENTITY | \ |
| ADV_OPT_USE_NAME) |
| |
| #define ADV_SLOW_INT \ |
| .interval_min = BT_GAP_ADV_SLOW_INT_MIN, \ |
| .interval_max = BT_GAP_ADV_SLOW_INT_MAX |
| |
| #define ADV_FAST_INT \ |
| .interval_min = BT_GAP_ADV_FAST_INT_MIN_2, \ |
| .interval_max = BT_GAP_ADV_FAST_INT_MAX_2 |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| static void proxy_send_beacons(struct k_work *work); |
| #endif |
| |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| static bool prov_fast_adv; |
| #endif |
| |
| static struct bt_mesh_proxy_client { |
| struct bt_conn *conn; |
| uint16_t filter[CONFIG_BT_MESH_PROXY_FILTER_SIZE]; |
| enum __packed { |
| NONE, |
| WHITELIST, |
| BLACKLIST, |
| PROV, |
| } filter_type; |
| uint8_t msg_type; |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| struct k_work send_beacons; |
| #endif |
| struct k_work_delayable sar_timer; |
| struct net_buf_simple buf; |
| } clients[CONFIG_BT_MAX_CONN] = { |
| [0 ... (CONFIG_BT_MAX_CONN - 1)] = { |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| .send_beacons = Z_WORK_INITIALIZER(proxy_send_beacons), |
| #endif |
| }, |
| }; |
| |
| static sys_slist_t idle_waiters; |
| static atomic_t pending_notifications; |
| static uint8_t __noinit client_buf_data[CLIENT_BUF_SIZE * CONFIG_BT_MAX_CONN]; |
| |
| /* Track which service is enabled */ |
| static enum { |
| MESH_GATT_NONE, |
| MESH_GATT_PROV, |
| MESH_GATT_PROXY, |
| } gatt_svc = MESH_GATT_NONE; |
| |
| static struct bt_mesh_proxy_client *find_client(struct bt_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 k_work_delayable *dwork = k_work_delayable_from_work(work); |
| struct bt_mesh_proxy_client *client = |
| CONTAINER_OF(dwork, struct bt_mesh_proxy_client, sar_timer); |
| |
| if (!client->conn) { |
| return; |
| } |
| |
| if (!client->buf.len) { |
| BT_DBG("No pending Proxy SAR message"); |
| return; |
| } |
| |
| BT_WARN("Proxy SAR timeout"); |
| |
| bt_conn_disconnect(client->conn, BT_HCI_ERR_REMOTE_USER_TERM_CONN); |
| } |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| /* Next subnet in queue to be advertised */ |
| static struct bt_mesh_subnet *beacon_sub; |
| |
| static int proxy_segment_and_send(struct bt_conn *conn, uint8_t type, |
| struct net_buf_simple *msg); |
| |
| static int filter_set(struct bt_mesh_proxy_client *client, |
| struct net_buf_simple *buf) |
| { |
| uint8_t type; |
| |
| if (buf->len < 1) { |
| BT_WARN("Too short Filter Set message"); |
| return -EINVAL; |
| } |
| |
| type = net_buf_simple_pull_u8(buf); |
| BT_DBG("type 0x%02x", type); |
| |
| switch (type) { |
| case 0x00: |
| (void)memset(client->filter, 0, sizeof(client->filter)); |
| client->filter_type = WHITELIST; |
| break; |
| case 0x01: |
| (void)memset(client->filter, 0, sizeof(client->filter)); |
| client->filter_type = 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) |
| { |
| int i; |
| |
| BT_DBG("addr 0x%04x", addr); |
| |
| if (addr == BT_MESH_ADDR_UNASSIGNED) { |
| return; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(client->filter); i++) { |
| if (client->filter[i] == addr) { |
| return; |
| } |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(client->filter); i++) { |
| if (client->filter[i] == BT_MESH_ADDR_UNASSIGNED) { |
| client->filter[i] = addr; |
| return; |
| } |
| } |
| } |
| |
| static void filter_remove(struct bt_mesh_proxy_client *client, uint16_t addr) |
| { |
| int i; |
| |
| BT_DBG("addr 0x%04x", addr); |
| |
| if (addr == BT_MESH_ADDR_UNASSIGNED) { |
| return; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(client->filter); i++) { |
| if (client->filter[i] == addr) { |
| client->filter[i] = BT_MESH_ADDR_UNASSIGNED; |
| 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; |
| int i, err; |
| |
| /* Configuration messages always have dst unassigned */ |
| tx.ctx->addr = BT_MESH_ADDR_UNASSIGNED; |
| |
| net_buf_simple_reset(buf); |
| net_buf_simple_reserve(buf, 10); |
| |
| net_buf_simple_add_u8(buf, CFG_FILTER_STATUS); |
| |
| if (client->filter_type == 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] != BT_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 cfg message failed (err %d)", err); |
| return; |
| } |
| |
| err = proxy_segment_and_send(client->conn, BT_MESH_PROXY_CONFIG, buf); |
| if (err) { |
| BT_ERR("Failed to send proxy cfg message (err %d)", err); |
| } |
| } |
| |
| static void proxy_cfg(struct bt_mesh_proxy_client *client) |
| { |
| NET_BUF_SIMPLE_DEFINE(buf, BT_MESH_NET_MAX_PDU_LEN); |
| struct bt_mesh_net_rx rx; |
| uint8_t opcode; |
| int err; |
| |
| err = bt_mesh_net_decode(&client->buf, BT_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, BT_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 CFG_FILTER_SET: |
| filter_set(client, &buf); |
| send_filter_status(client, &rx, &buf); |
| break; |
| case CFG_FILTER_ADD: |
| while (buf.len >= 2) { |
| uint16_t addr; |
| |
| addr = net_buf_simple_pull_be16(&buf); |
| filter_add(client, addr); |
| } |
| send_filter_status(client, &rx, &buf); |
| break; |
| case CFG_FILTER_REMOVE: |
| while (buf.len >= 2) { |
| uint16_t addr; |
| |
| addr = net_buf_simple_pull_be16(&buf); |
| filter_remove(client, addr); |
| } |
| send_filter_status(client, &rx, &buf); |
| break; |
| default: |
| BT_WARN("Unhandled configuration OpCode 0x%02x", opcode); |
| break; |
| } |
| } |
| |
| static int beacon_send(struct bt_conn *conn, struct bt_mesh_subnet *sub) |
| { |
| NET_BUF_SIMPLE_DEFINE(buf, 23); |
| |
| net_buf_simple_reserve(&buf, 1); |
| bt_mesh_beacon_create(sub, &buf); |
| |
| return proxy_segment_and_send(conn, BT_MESH_PROXY_BEACON, &buf); |
| } |
| |
| static int send_beacon_cb(struct bt_mesh_subnet *sub, void *cb_data) |
| { |
| struct bt_mesh_proxy_client *client = cb_data; |
| |
| return beacon_send(client->conn, sub); |
| } |
| |
| static void proxy_send_beacons(struct k_work *work) |
| { |
| struct bt_mesh_proxy_client *client; |
| |
| client = CONTAINER_OF(work, struct bt_mesh_proxy_client, send_beacons); |
| |
| (void)bt_mesh_subnet_find(send_beacon_cb, client); |
| } |
| |
| void bt_mesh_proxy_beacon_send(struct bt_mesh_subnet *sub) |
| { |
| int i; |
| |
| if (!sub) { |
| /* NULL means we send on all subnets */ |
| bt_mesh_subnet_foreach(bt_mesh_proxy_beacon_send); |
| return; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(clients); i++) { |
| if (clients[i].conn) { |
| beacon_send(clients[i].conn, sub); |
| } |
| } |
| } |
| |
| static void node_id_start(struct bt_mesh_subnet *sub) |
| { |
| sub->node_id = BT_MESH_NODE_IDENTITY_RUNNING; |
| sub->node_id_start = k_uptime_get_32(); |
| |
| Z_STRUCT_SECTION_FOREACH(bt_mesh_proxy_cb, cb) { |
| if (cb->identity_enabled) { |
| cb->identity_enabled(sub->net_idx); |
| } |
| } |
| } |
| |
| void bt_mesh_proxy_identity_start(struct bt_mesh_subnet *sub) |
| { |
| node_id_start(sub); |
| |
| /* Prioritize the recently enabled subnet */ |
| beacon_sub = sub; |
| } |
| |
| void bt_mesh_proxy_identity_stop(struct bt_mesh_subnet *sub) |
| { |
| sub->node_id = BT_MESH_NODE_IDENTITY_STOPPED; |
| sub->node_id_start = 0U; |
| |
| Z_STRUCT_SECTION_FOREACH(bt_mesh_proxy_cb, cb) { |
| if (cb->identity_disabled) { |
| cb->identity_disabled(sub->net_idx); |
| } |
| } |
| } |
| |
| int bt_mesh_proxy_identity_enable(void) |
| { |
| BT_DBG(""); |
| |
| if (!bt_mesh_is_provisioned()) { |
| return -EAGAIN; |
| } |
| |
| if (bt_mesh_subnet_foreach(node_id_start)) { |
| bt_mesh_adv_update(); |
| } |
| |
| return 0; |
| } |
| |
| #endif /* GATT_PROXY */ |
| |
| static void proxy_complete_pdu(struct bt_mesh_proxy_client *client) |
| { |
| switch (client->msg_type) { |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| case BT_MESH_PROXY_NET_PDU: |
| BT_DBG("Mesh Network PDU"); |
| bt_mesh_net_recv(&client->buf, 0, BT_MESH_NET_IF_PROXY); |
| break; |
| case BT_MESH_PROXY_BEACON: |
| BT_DBG("Mesh Beacon PDU"); |
| bt_mesh_beacon_recv(&client->buf); |
| break; |
| case BT_MESH_PROXY_CONFIG: |
| BT_DBG("Mesh Configuration PDU"); |
| proxy_cfg(client); |
| break; |
| #endif |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| case BT_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); |
| } |
| |
| #define ATTR_IS_PROV(attr) (attr->user_data != NULL) |
| |
| static ssize_t proxy_recv(struct bt_conn *conn, |
| const struct bt_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) { |
| return -ENOTCONN; |
| } |
| |
| if (len < 1) { |
| BT_WARN("Too small Proxy PDU"); |
| return -EINVAL; |
| } |
| |
| if (ATTR_IS_PROV(attr) != (PDU_TYPE(data) == BT_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 (PDU_SAR(data)) { |
| case SAR_COMPLETE: |
| if (client->buf.len) { |
| BT_WARN("Complete PDU while a pending incomplete one"); |
| return -EINVAL; |
| } |
| |
| client->msg_type = PDU_TYPE(data); |
| net_buf_simple_add_mem(&client->buf, data + 1, len - 1); |
| proxy_complete_pdu(client); |
| break; |
| |
| case SAR_FIRST: |
| if (client->buf.len) { |
| BT_WARN("First PDU while a pending incomplete one"); |
| return -EINVAL; |
| } |
| |
| k_work_reschedule(&client->sar_timer, PROXY_SAR_TIMEOUT); |
| client->msg_type = PDU_TYPE(data); |
| net_buf_simple_add_mem(&client->buf, data + 1, len - 1); |
| break; |
| |
| case SAR_CONT: |
| if (!client->buf.len) { |
| BT_WARN("Continuation with no prior data"); |
| return -EINVAL; |
| } |
| |
| if (client->msg_type != PDU_TYPE(data)) { |
| BT_WARN("Unexpected message type in continuation"); |
| return -EINVAL; |
| } |
| |
| k_work_reschedule(&client->sar_timer, PROXY_SAR_TIMEOUT); |
| net_buf_simple_add_mem(&client->buf, data + 1, len - 1); |
| break; |
| |
| case SAR_LAST: |
| if (!client->buf.len) { |
| BT_WARN("Last SAR PDU with no prior data"); |
| return -EINVAL; |
| } |
| |
| if (client->msg_type != PDU_TYPE(data)) { |
| BT_WARN("Unexpected message type in last SAR PDU"); |
| return -EINVAL; |
| } |
| |
| /* If this fails, the work handler exits early, as there's no |
| * active SAR buffer. |
| */ |
| (void)k_work_cancel_delayable(&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_conn *conn, uint8_t err) |
| { |
| struct bt_mesh_proxy_client *client; |
| int i; |
| |
| BT_DBG("conn %p err 0x%02x", (void *)conn, err); |
| |
| conn_count++; |
| |
| /* Try to re-enable advertising in case it's possible */ |
| if (conn_count < CONFIG_BT_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_conn_ref(conn); |
| client->filter_type = NONE; |
| (void)memset(client->filter, 0, sizeof(client->filter)); |
| net_buf_simple_reset(&client->buf); |
| } |
| |
| static void proxy_disconnected(struct bt_conn *conn, uint8_t reason) |
| { |
| int i; |
| |
| BT_DBG("conn %p reason 0x%02x", (void *)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 (IS_ENABLED(CONFIG_BT_MESH_PB_GATT) && |
| client->filter_type == PROV) { |
| bt_mesh_pb_gatt_close(conn); |
| } |
| |
| /* If this fails, the work handler exits early, as |
| * there's no active connection. |
| */ |
| (void)k_work_cancel_delayable(&client->sar_timer); |
| bt_conn_unref(client->conn); |
| client->conn = NULL; |
| break; |
| } |
| } |
| |
| bt_mesh_adv_update(); |
| } |
| |
| struct net_buf_simple *bt_mesh_proxy_get_buf(void) |
| { |
| struct net_buf_simple *buf = &clients[0].buf; |
| |
| net_buf_simple_reset(buf); |
| |
| return buf; |
| } |
| |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| static void prov_ccc_changed(const struct bt_gatt_attr *attr, uint16_t value) |
| { |
| BT_DBG("value 0x%04x", value); |
| } |
| |
| static ssize_t prov_ccc_write(struct bt_conn *conn, |
| const struct bt_gatt_attr *attr, uint16_t value) |
| { |
| struct bt_mesh_proxy_client *client; |
| |
| BT_DBG("value 0x%04x", value); |
| |
| if (value != BT_GATT_CCC_NOTIFY) { |
| BT_WARN("Client wrote 0x%04x instead enabling notify", value); |
| return BT_GATT_ERR(BT_ATT_ERR_VALUE_NOT_ALLOWED); |
| } |
| |
| /* If a connection exists there must be a client */ |
| client = find_client(conn); |
| __ASSERT(client, "No client for connection"); |
| |
| if (client->filter_type == NONE) { |
| client->filter_type = PROV; |
| bt_mesh_pb_gatt_open(conn); |
| } |
| |
| return sizeof(value); |
| } |
| |
| /* Mesh Provisioning Service Declaration */ |
| static struct _bt_gatt_ccc prov_ccc = |
| BT_GATT_CCC_INITIALIZER(prov_ccc_changed, prov_ccc_write, NULL); |
| |
| static struct bt_gatt_attr prov_attrs[] = { |
| BT_GATT_PRIMARY_SERVICE(BT_UUID_MESH_PROV), |
| |
| BT_GATT_CHARACTERISTIC(BT_UUID_MESH_PROV_DATA_IN, |
| BT_GATT_CHRC_WRITE_WITHOUT_RESP, |
| BT_GATT_PERM_WRITE, NULL, proxy_recv, |
| (void *)1), |
| |
| BT_GATT_CHARACTERISTIC(BT_UUID_MESH_PROV_DATA_OUT, |
| BT_GATT_CHRC_NOTIFY, BT_GATT_PERM_NONE, |
| NULL, NULL, NULL), |
| BT_GATT_CCC_MANAGED(&prov_ccc, |
| BT_GATT_PERM_READ | BT_GATT_PERM_WRITE), |
| }; |
| |
| static struct bt_gatt_service prov_svc = BT_GATT_SERVICE(prov_attrs); |
| |
| int bt_mesh_proxy_prov_enable(void) |
| { |
| int i; |
| |
| BT_DBG(""); |
| |
| if (gatt_svc == MESH_GATT_PROV) { |
| return -EALREADY; |
| } |
| |
| if (gatt_svc != MESH_GATT_NONE) { |
| return -EBUSY; |
| } |
| |
| (void)bt_gatt_service_register(&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 = PROV; |
| } |
| } |
| |
| |
| return 0; |
| } |
| |
| int bt_mesh_proxy_prov_disable(bool disconnect) |
| { |
| int i; |
| |
| BT_DBG(""); |
| |
| if (gatt_svc == MESH_GATT_NONE) { |
| return -EALREADY; |
| } |
| |
| if (gatt_svc != MESH_GATT_PROV) { |
| return -EBUSY; |
| } |
| |
| bt_gatt_service_unregister(&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 != PROV) { |
| continue; |
| } |
| |
| if (disconnect) { |
| bt_conn_disconnect(client->conn, |
| BT_HCI_ERR_REMOTE_USER_TERM_CONN); |
| } else { |
| bt_mesh_pb_gatt_close(client->conn); |
| client->filter_type = NONE; |
| } |
| } |
| |
| bt_mesh_adv_update(); |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_BT_MESH_PB_GATT */ |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| static void proxy_ccc_changed(const struct bt_gatt_attr *attr, uint16_t value) |
| { |
| BT_DBG("value 0x%04x", value); |
| } |
| |
| static ssize_t proxy_ccc_write(struct bt_conn *conn, |
| const struct bt_gatt_attr *attr, uint16_t value) |
| { |
| struct bt_mesh_proxy_client *client; |
| |
| BT_DBG("value: 0x%04x", value); |
| |
| if (value != BT_GATT_CCC_NOTIFY) { |
| BT_WARN("Client wrote 0x%04x instead enabling notify", value); |
| return BT_GATT_ERR(BT_ATT_ERR_VALUE_NOT_ALLOWED); |
| } |
| |
| /* If a connection exists there must be a client */ |
| client = find_client(conn); |
| __ASSERT(client, "No client for connection"); |
| |
| if (client->filter_type == NONE) { |
| client->filter_type = WHITELIST; |
| k_work_submit(&client->send_beacons); |
| } |
| |
| return sizeof(value); |
| } |
| |
| /* Mesh Proxy Service Declaration */ |
| static struct _bt_gatt_ccc proxy_ccc = |
| BT_GATT_CCC_INITIALIZER(proxy_ccc_changed, proxy_ccc_write, NULL); |
| |
| static struct bt_gatt_attr proxy_attrs[] = { |
| BT_GATT_PRIMARY_SERVICE(BT_UUID_MESH_PROXY), |
| |
| BT_GATT_CHARACTERISTIC(BT_UUID_MESH_PROXY_DATA_IN, |
| BT_GATT_CHRC_WRITE_WITHOUT_RESP, |
| BT_GATT_PERM_WRITE, |
| NULL, proxy_recv, NULL), |
| |
| BT_GATT_CHARACTERISTIC(BT_UUID_MESH_PROXY_DATA_OUT, |
| BT_GATT_CHRC_NOTIFY, |
| BT_GATT_PERM_NONE, |
| NULL, NULL, NULL), |
| BT_GATT_CCC_MANAGED(&proxy_ccc, |
| BT_GATT_PERM_READ | BT_GATT_PERM_WRITE), |
| }; |
| |
| static struct bt_gatt_service proxy_svc = BT_GATT_SERVICE(proxy_attrs); |
| |
| int bt_mesh_proxy_gatt_enable(void) |
| { |
| int i; |
| |
| BT_DBG(""); |
| |
| if (gatt_svc == MESH_GATT_PROXY) { |
| return -EALREADY; |
| } |
| |
| if (gatt_svc != MESH_GATT_NONE) { |
| return -EBUSY; |
| } |
| |
| (void)bt_gatt_service_register(&proxy_svc); |
| gatt_svc = MESH_GATT_PROXY; |
| |
| for (i = 0; i < ARRAY_SIZE(clients); i++) { |
| if (clients[i].conn) { |
| clients[i].filter_type = WHITELIST; |
| } |
| } |
| |
| return 0; |
| } |
| |
| void bt_mesh_proxy_gatt_disconnect(void) |
| { |
| int i; |
| |
| BT_DBG(""); |
| |
| for (i = 0; i < ARRAY_SIZE(clients); i++) { |
| struct bt_mesh_proxy_client *client = &clients[i]; |
| |
| if (client->conn && (client->filter_type == WHITELIST || |
| client->filter_type == BLACKLIST)) { |
| client->filter_type = NONE; |
| bt_conn_disconnect(client->conn, |
| BT_HCI_ERR_REMOTE_USER_TERM_CONN); |
| } |
| } |
| } |
| |
| int bt_mesh_proxy_gatt_disable(void) |
| { |
| BT_DBG(""); |
| |
| if (gatt_svc == MESH_GATT_NONE) { |
| return -EALREADY; |
| } |
| |
| if (gatt_svc != MESH_GATT_PROXY) { |
| return -EBUSY; |
| } |
| |
| bt_mesh_proxy_gatt_disconnect(); |
| |
| bt_gatt_service_unregister(&proxy_svc); |
| gatt_svc = MESH_GATT_NONE; |
| |
| return 0; |
| } |
| |
| void bt_mesh_proxy_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 == WHITELIST) { |
| filter_add(client, addr); |
| } else if (client->filter_type == 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 == BLACKLIST) { |
| for (i = 0; i < ARRAY_SIZE(client->filter); i++) { |
| if (client->filter[i] == addr) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| if (addr == BT_MESH_ADDR_ALL_NODES) { |
| return true; |
| } |
| |
| if (client->filter_type == WHITELIST) { |
| for (i = 0; i < ARRAY_SIZE(client->filter); i++) { |
| if (client->filter[i] == addr) { |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| bool bt_mesh_proxy_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_send(client->conn, BT_MESH_PROXY_NET_PDU, &msg); |
| relayed = true; |
| } |
| |
| return relayed; |
| } |
| |
| #endif /* CONFIG_BT_MESH_GATT_PROXY */ |
| |
| static void notify_complete(struct bt_conn *conn, void *user_data) |
| { |
| sys_snode_t *n; |
| |
| if (atomic_dec(&pending_notifications) > 1) { |
| return; |
| } |
| |
| BT_DBG(""); |
| |
| while ((n = sys_slist_get(&idle_waiters))) { |
| CONTAINER_OF(n, struct bt_mesh_proxy_idle_cb, n)->cb(); |
| } |
| } |
| |
| static int proxy_send(struct bt_conn *conn, const void *data, |
| uint16_t len) |
| { |
| struct bt_gatt_notify_params params = { |
| .data = data, |
| .len = len, |
| .func = notify_complete, |
| }; |
| int err; |
| |
| BT_DBG("%u bytes: %s", len, bt_hex(data, len)); |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| if (gatt_svc == MESH_GATT_PROXY) { |
| params.attr = &proxy_attrs[3]; |
| } |
| #endif |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| if (gatt_svc == MESH_GATT_PROV) { |
| params.attr = &prov_attrs[3]; |
| } |
| #endif |
| |
| if (!params.attr) { |
| return 0; |
| } |
| |
| err = bt_gatt_notify_cb(conn, ¶ms); |
| if (!err) { |
| atomic_inc(&pending_notifications); |
| } |
| |
| return err; |
| } |
| |
| static int proxy_segment_and_send(struct bt_conn *conn, uint8_t type, |
| struct net_buf_simple *msg) |
| { |
| uint16_t mtu; |
| |
| BT_DBG("conn %p type 0x%02x len %u: %s", (void *)conn, type, msg->len, |
| bt_hex(msg->data, msg->len)); |
| |
| /* ATT_MTU - OpCode (1 byte) - Handle (2 bytes) */ |
| mtu = bt_gatt_get_mtu(conn) - 3; |
| if (mtu > msg->len) { |
| net_buf_simple_push_u8(msg, PDU_HDR(SAR_COMPLETE, type)); |
| return proxy_send(conn, msg->data, msg->len); |
| } |
| |
| net_buf_simple_push_u8(msg, PDU_HDR(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, PDU_HDR(SAR_LAST, type)); |
| proxy_send(conn, msg->data, msg->len); |
| break; |
| } |
| |
| net_buf_simple_push_u8(msg, PDU_HDR(SAR_CONT, type)); |
| proxy_send(conn, msg->data, mtu); |
| net_buf_simple_pull(msg, mtu); |
| } |
| |
| return 0; |
| } |
| |
| int bt_mesh_proxy_send(struct bt_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 == PROV) != (type == BT_MESH_PROXY_PROV)) { |
| BT_ERR("Invalid PDU type for Proxy Client"); |
| return -EINVAL; |
| } |
| |
| return proxy_segment_and_send(conn, type, msg); |
| } |
| |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| static uint8_t prov_svc_data[20] = { |
| BT_UUID_16_ENCODE(BT_UUID_MESH_PROV_VAL), |
| }; |
| |
| static const struct bt_data prov_ad[] = { |
| BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)), |
| BT_DATA_BYTES(BT_DATA_UUID16_ALL, |
| BT_UUID_16_ENCODE(BT_UUID_MESH_PROV_VAL)), |
| BT_DATA(BT_DATA_SVC_DATA16, prov_svc_data, sizeof(prov_svc_data)), |
| }; |
| #endif /* PB_GATT */ |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| |
| #define ID_TYPE_NET 0x00 |
| #define ID_TYPE_NODE 0x01 |
| |
| #define NODE_ID_LEN 19 |
| #define NET_ID_LEN 11 |
| |
| #define NODE_ID_TIMEOUT (CONFIG_BT_MESH_NODE_ID_TIMEOUT * MSEC_PER_SEC) |
| |
| static uint8_t proxy_svc_data[NODE_ID_LEN] = { |
| BT_UUID_16_ENCODE(BT_UUID_MESH_PROXY_VAL), |
| }; |
| |
| static const struct bt_data node_id_ad[] = { |
| BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)), |
| BT_DATA_BYTES(BT_DATA_UUID16_ALL, |
| BT_UUID_16_ENCODE(BT_UUID_MESH_PROXY_VAL)), |
| BT_DATA(BT_DATA_SVC_DATA16, proxy_svc_data, NODE_ID_LEN), |
| }; |
| |
| static const struct bt_data net_id_ad[] = { |
| BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)), |
| BT_DATA_BYTES(BT_DATA_UUID16_ALL, |
| BT_UUID_16_ENCODE(BT_UUID_MESH_PROXY_VAL)), |
| BT_DATA(BT_DATA_SVC_DATA16, proxy_svc_data, NET_ID_LEN), |
| }; |
| |
| static int node_id_adv(struct bt_mesh_subnet *sub, int32_t duration) |
| { |
| struct bt_le_adv_param fast_adv_param = { |
| .options = ADV_OPT_PROXY, |
| ADV_FAST_INT, |
| }; |
| uint8_t tmp[16]; |
| int err; |
| |
| BT_DBG(""); |
| |
| proxy_svc_data[2] = ID_TYPE_NODE; |
| |
| err = bt_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_encrypt_be(sub->keys[SUBNET_KEY_TX_IDX(sub)].identity, tmp, |
| tmp); |
| if (err) { |
| return err; |
| } |
| |
| memcpy(proxy_svc_data + 3, tmp + 8, 8); |
| |
| err = bt_mesh_adv_start(&fast_adv_param, duration, node_id_ad, |
| ARRAY_SIZE(node_id_ad), NULL, 0); |
| if (err) { |
| BT_WARN("Failed to advertise using Node ID (err %d)", err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int net_id_adv(struct bt_mesh_subnet *sub, int32_t duration) |
| { |
| struct bt_le_adv_param slow_adv_param = { |
| .options = ADV_OPT_PROXY, |
| ADV_SLOW_INT, |
| }; |
| int err; |
| |
| BT_DBG(""); |
| |
| proxy_svc_data[2] = ID_TYPE_NET; |
| |
| BT_DBG("Advertising with NetId %s", |
| bt_hex(sub->keys[SUBNET_KEY_TX_IDX(sub)].net_id, 8)); |
| |
| memcpy(proxy_svc_data + 3, sub->keys[SUBNET_KEY_TX_IDX(sub)].net_id, 8); |
| |
| err = bt_mesh_adv_start(&slow_adv_param, duration, net_id_ad, |
| ARRAY_SIZE(net_id_ad), NULL, 0); |
| if (err) { |
| BT_WARN("Failed to advertise using Network ID (err %d)", err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static bool advertise_subnet(struct bt_mesh_subnet *sub) |
| { |
| if (sub->net_idx == BT_MESH_KEY_UNUSED) { |
| return false; |
| } |
| |
| return (sub->node_id == BT_MESH_NODE_IDENTITY_RUNNING || |
| bt_mesh_gatt_proxy_get() == BT_MESH_GATT_PROXY_ENABLED); |
| } |
| |
| static struct bt_mesh_subnet *next_sub(void) |
| { |
| struct bt_mesh_subnet *sub = NULL; |
| |
| if (!beacon_sub) { |
| beacon_sub = bt_mesh_subnet_next(NULL); |
| if (!beacon_sub) { |
| /* No valid subnets */ |
| return NULL; |
| } |
| } |
| |
| sub = beacon_sub; |
| do { |
| if (advertise_subnet(sub)) { |
| beacon_sub = sub; |
| return sub; |
| } |
| |
| sub = bt_mesh_subnet_next(sub); |
| } while (sub != beacon_sub); |
| |
| /* No subnets to advertise on */ |
| return NULL; |
| } |
| |
| static int sub_count_cb(struct bt_mesh_subnet *sub, void *cb_data) |
| { |
| int *count = cb_data; |
| |
| if (advertise_subnet(sub)) { |
| (*count)++; |
| } |
| |
| return 0; |
| } |
| |
| static int sub_count(void) |
| { |
| int count = 0; |
| |
| (void)bt_mesh_subnet_find(sub_count_cb, &count); |
| |
| return count; |
| } |
| |
| static int gatt_proxy_advertise(struct bt_mesh_subnet *sub) |
| { |
| int32_t remaining = SYS_FOREVER_MS; |
| int subnet_count; |
| int err = -EBUSY; |
| |
| BT_DBG(""); |
| |
| if (conn_count == CONFIG_BT_MAX_CONN) { |
| BT_DBG("Connectable advertising deferred (max connections)"); |
| return -ENOMEM; |
| } |
| |
| sub = beacon_sub ? beacon_sub : bt_mesh_subnet_next(beacon_sub); |
| if (!sub) { |
| BT_WARN("No subnets to advertise on"); |
| return -ENOENT; |
| } |
| |
| subnet_count = sub_count(); |
| BT_DBG("sub_count %u", subnet_count); |
| if (subnet_count > 1) { |
| int32_t max_timeout; |
| |
| /* 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, 1 * MSEC_PER_SEC); |
| |
| if (remaining > max_timeout || remaining == SYS_FOREVER_MS) { |
| remaining = max_timeout; |
| } |
| } |
| |
| if (sub->node_id == BT_MESH_NODE_IDENTITY_RUNNING) { |
| uint32_t 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); |
| err = node_id_adv(sub, remaining); |
| } else { |
| bt_mesh_proxy_identity_stop(sub); |
| BT_DBG("Node ID stopped"); |
| } |
| } |
| |
| if (sub->node_id == BT_MESH_NODE_IDENTITY_STOPPED) { |
| err = net_id_adv(sub, remaining); |
| } |
| |
| BT_DBG("Advertising %d ms for net_idx 0x%04x", remaining, sub->net_idx); |
| |
| beacon_sub = bt_mesh_subnet_next(beacon_sub); |
| |
| return err; |
| } |
| #endif /* GATT_PROXY */ |
| |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| static size_t gatt_prov_adv_create(struct bt_data prov_sd[1]) |
| { |
| const struct bt_mesh_prov *prov = bt_mesh_prov_get(); |
| size_t uri_len; |
| |
| memcpy(prov_svc_data + 2, prov->uuid, 16); |
| sys_put_be16(prov->oob_info, prov_svc_data + 18); |
| |
| if (!prov->uri) { |
| return 0; |
| } |
| |
| uri_len = strlen(prov->uri); |
| if (uri_len > 29) { |
| /* There's no way to shorten an URI */ |
| BT_WARN("Too long URI to fit advertising packet"); |
| return 0; |
| } |
| |
| prov_sd[0].type = BT_DATA_URI; |
| prov_sd[0].data_len = uri_len; |
| prov_sd[0].data = prov->uri; |
| |
| return 1; |
| } |
| #endif /* CONFIG_BT_MESH_PB_GATT */ |
| |
| int bt_mesh_proxy_adv_start(void) |
| { |
| BT_DBG(""); |
| |
| if (gatt_svc == MESH_GATT_NONE) { |
| return -ENOENT; |
| } |
| |
| #if defined(CONFIG_BT_MESH_PB_GATT) |
| if (!bt_mesh_is_provisioned()) { |
| struct bt_le_adv_param fast_adv_param = { |
| .options = ADV_OPT_PROV, |
| ADV_FAST_INT, |
| }; |
| struct bt_data prov_sd[1]; |
| size_t prov_sd_len; |
| int err; |
| |
| prov_sd_len = gatt_prov_adv_create(prov_sd); |
| |
| if (!prov_fast_adv) { |
| struct bt_le_adv_param slow_adv_param = { |
| .options = ADV_OPT_PROV, |
| ADV_SLOW_INT, |
| }; |
| |
| return bt_mesh_adv_start(&slow_adv_param, |
| SYS_FOREVER_MS, prov_ad, |
| ARRAY_SIZE(prov_ad), prov_sd, |
| prov_sd_len); |
| } |
| |
| /* Advertise 60 seconds using fast interval */ |
| err = bt_mesh_adv_start(&fast_adv_param, (60 * MSEC_PER_SEC), |
| prov_ad, ARRAY_SIZE(prov_ad), |
| prov_sd, prov_sd_len); |
| if (!err) { |
| prov_fast_adv = false; |
| } |
| |
| return err; |
| } |
| #endif /* PB_GATT */ |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| if (bt_mesh_is_provisioned()) { |
| return gatt_proxy_advertise(next_sub()); |
| } |
| #endif /* GATT_PROXY */ |
| |
| return -ENOTSUP; |
| } |
| |
| #if defined(CONFIG_BT_MESH_GATT_PROXY) |
| static void subnet_evt(struct bt_mesh_subnet *sub, enum bt_mesh_key_evt evt) |
| { |
| if (evt == BT_MESH_KEY_DELETED) { |
| if (sub == beacon_sub) { |
| beacon_sub = NULL; |
| } |
| } else { |
| bt_mesh_proxy_beacon_send(sub); |
| } |
| } |
| |
| BT_MESH_SUBNET_CB_DEFINE(subnet_evt); |
| #endif |
| |
| static struct bt_conn_cb conn_callbacks = { |
| .connected = proxy_connected, |
| .disconnected = proxy_disconnected, |
| }; |
| |
| int bt_mesh_proxy_init(void) |
| { |
| int i; |
| |
| /* Initialize the client receive buffers */ |
| for (i = 0; i < ARRAY_SIZE(clients); i++) { |
| struct bt_mesh_proxy_client *client = &clients[i]; |
| |
| client->buf.size = CLIENT_BUF_SIZE; |
| client->buf.__buf = client_buf_data + (i * CLIENT_BUF_SIZE); |
| |
| k_work_init_delayable(&client->sar_timer, proxy_sar_timeout); |
| } |
| |
| bt_conn_cb_register(&conn_callbacks); |
| |
| return 0; |
| } |
| |
| void bt_mesh_proxy_on_idle(struct bt_mesh_proxy_idle_cb *cb) |
| { |
| if (!atomic_get(&pending_notifications)) { |
| cb->cb(); |
| return; |
| } |
| |
| sys_slist_append(&idle_waiters, &cb->n); |
| } |