565 lines
13 KiB
C
565 lines
13 KiB
C
/** @file
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* @brief Bluetooth BR/EDR shell module
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*
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* Provide some Bluetooth shell commands that can be useful to applications.
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*/
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/*
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include <zephyr/types.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/byteorder.h>
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#include <zephyr.h>
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#include <settings/settings.h>
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#include <bluetooth/hci.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/conn.h>
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#include <bluetooth/l2cap.h>
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#include <bluetooth/rfcomm.h>
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#include <bluetooth/sdp.h>
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#include <shell/shell.h>
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#include "bt.h"
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#if defined(CONFIG_BT_CONN)
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/* Connection context for BR/EDR legacy pairing in sec mode 3 */
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static struct bt_conn *pairing_conn;
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#endif /* CONFIG_BT_CONN */
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#define DATA_BREDR_MTU 48
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NET_BUF_POOL_FIXED_DEFINE(data_pool, 1, DATA_BREDR_MTU, NULL);
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#define SDP_CLIENT_USER_BUF_LEN 512
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NET_BUF_POOL_FIXED_DEFINE(sdp_client_pool, CONFIG_BT_MAX_CONN,
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SDP_CLIENT_USER_BUF_LEN, NULL);
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static int cmd_auth_pincode(const struct shell *shell,
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size_t argc, char *argv[])
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{
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struct bt_conn *conn;
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uint8_t max = 16U;
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if (default_conn) {
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conn = default_conn;
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} else if (pairing_conn) {
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conn = pairing_conn;
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} else {
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conn = NULL;
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}
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if (!conn) {
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shell_print(shell, "Not connected");
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return 0;
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}
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if (strlen(argv[1]) > max) {
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shell_print(shell, "PIN code value invalid - enter max %u "
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"digits", max);
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return 0;
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}
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shell_print(shell, "PIN code \"%s\" applied", argv[1]);
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bt_conn_auth_pincode_entry(conn, argv[1]);
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return 0;
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}
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static int cmd_connect(const struct shell *shell, size_t argc, char *argv[])
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{
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struct bt_conn *conn;
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bt_addr_t addr;
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int err;
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err = bt_addr_from_str(argv[1], &addr);
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if (err) {
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shell_print(shell, "Invalid peer address (err %d)", err);
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return -ENOEXEC;
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}
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conn = bt_conn_create_br(&addr, BT_BR_CONN_PARAM_DEFAULT);
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if (!conn) {
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shell_print(shell, "Connection failed");
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} else {
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shell_print(shell, "Connection pending");
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/* unref connection obj in advance as app user */
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bt_conn_unref(conn);
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}
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return 0;
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}
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static void br_device_found(const bt_addr_t *addr, int8_t rssi,
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const uint8_t cod[3], const uint8_t eir[240])
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{
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char br_addr[BT_ADDR_STR_LEN];
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char name[239];
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int len = 240;
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(void)memset(name, 0, sizeof(name));
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while (len) {
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if (len < 2) {
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break;
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}
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/* Look for early termination */
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if (!eir[0]) {
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break;
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}
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/* Check if field length is correct */
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if (eir[0] > len - 1) {
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break;
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}
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switch (eir[1]) {
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case BT_DATA_NAME_SHORTENED:
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case BT_DATA_NAME_COMPLETE:
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if (eir[0] > sizeof(name) - 1) {
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memcpy(name, &eir[2], sizeof(name) - 1);
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} else {
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memcpy(name, &eir[2], eir[0] - 1);
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}
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break;
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default:
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break;
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}
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/* Parse next AD Structure */
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len -= eir[0] + 1;
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eir += eir[0] + 1;
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}
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bt_addr_to_str(addr, br_addr, sizeof(br_addr));
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shell_print(ctx_shell, "[DEVICE]: %s, RSSI %i %s", br_addr, rssi, name);
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}
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static struct bt_br_discovery_result br_discovery_results[5];
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static void br_discovery_complete(struct bt_br_discovery_result *results,
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size_t count)
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{
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size_t i;
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shell_print(ctx_shell, "BR/EDR discovery complete");
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for (i = 0; i < count; i++) {
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br_device_found(&results[i].addr, results[i].rssi,
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results[i].cod, results[i].eir);
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}
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}
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static int cmd_discovery(const struct shell *shell, size_t argc, char *argv[])
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{
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const char *action;
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action = argv[1];
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if (!strcmp(action, "on")) {
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struct bt_br_discovery_param param;
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param.limited = false;
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param.length = 8U;
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if (argc > 2) {
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param.length = atoi(argv[2]);
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}
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if (argc > 3 && !strcmp(argv[3], "limited")) {
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param.limited = true;
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}
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if (bt_br_discovery_start(¶m, br_discovery_results,
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ARRAY_SIZE(br_discovery_results),
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br_discovery_complete) < 0) {
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shell_print(shell, "Failed to start discovery");
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return 0;
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}
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shell_print(shell, "Discovery started");
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} else if (!strcmp(action, "off")) {
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if (bt_br_discovery_stop()) {
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shell_print(shell, "Failed to stop discovery");
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return 0;
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}
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shell_print(shell, "Discovery stopped");
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} else {
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shell_help(shell);
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}
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return 0;
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}
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static int l2cap_recv(struct bt_l2cap_chan *chan, struct net_buf *buf)
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{
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shell_print(ctx_shell, "Incoming data channel %p len %u", chan,
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buf->len);
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return 0;
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}
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static void l2cap_connected(struct bt_l2cap_chan *chan)
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{
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shell_print(ctx_shell, "Channel %p connected", chan);
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}
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static void l2cap_disconnected(struct bt_l2cap_chan *chan)
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{
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shell_print(ctx_shell, "Channel %p disconnected", chan);
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}
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static struct net_buf *l2cap_alloc_buf(struct bt_l2cap_chan *chan)
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{
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shell_print(ctx_shell, "Channel %p requires buffer", chan);
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return net_buf_alloc(&data_pool, K_FOREVER);
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}
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static const struct bt_l2cap_chan_ops l2cap_ops = {
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.alloc_buf = l2cap_alloc_buf,
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.recv = l2cap_recv,
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.connected = l2cap_connected,
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.disconnected = l2cap_disconnected,
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};
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static struct bt_l2cap_br_chan l2cap_chan = {
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.chan.ops = &l2cap_ops,
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/* Set for now min. MTU */
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.rx.mtu = 48,
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};
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static int l2cap_accept(struct bt_conn *conn, struct bt_l2cap_chan **chan)
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{
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shell_print(ctx_shell, "Incoming BR/EDR conn %p", conn);
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if (l2cap_chan.chan.conn) {
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shell_error(ctx_shell, "No channels available");
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return -ENOMEM;
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}
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*chan = &l2cap_chan.chan;
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return 0;
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}
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static struct bt_l2cap_server br_server = {
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.accept = l2cap_accept,
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};
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static int cmd_l2cap_register(const struct shell *shell,
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size_t argc, char *argv[])
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{
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if (br_server.psm) {
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shell_print(shell, "Already registered");
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return 0;
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}
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br_server.psm = strtoul(argv[1], NULL, 16);
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if (bt_l2cap_br_server_register(&br_server) < 0) {
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shell_error(shell, "Unable to register psm");
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br_server.psm = 0U;
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return -ENOEXEC;
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} else {
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shell_print(shell, "L2CAP psm %u registered", br_server.psm);
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}
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return 0;
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}
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static int cmd_discoverable(const struct shell *shell,
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size_t argc, char *argv[])
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{
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int err;
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const char *action;
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action = argv[1];
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if (!strcmp(action, "on")) {
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err = bt_br_set_discoverable(true);
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} else if (!strcmp(action, "off")) {
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err = bt_br_set_discoverable(false);
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} else {
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shell_help(shell);
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return 0;
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}
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if (err) {
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shell_print(shell, "BR/EDR set/reset discoverable failed "
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"(err %d)", err);
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return -ENOEXEC;
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} else {
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shell_print(shell, "BR/EDR set/reset discoverable done");
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}
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return 0;
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}
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static int cmd_connectable(const struct shell *shell,
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size_t argc, char *argv[])
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{
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int err;
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const char *action;
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action = argv[1];
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if (!strcmp(action, "on")) {
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err = bt_br_set_connectable(true);
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} else if (!strcmp(action, "off")) {
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err = bt_br_set_connectable(false);
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} else {
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shell_help(shell);
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return 0;
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}
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if (err) {
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shell_print(shell, "BR/EDR set/rest connectable failed "
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"(err %d)", err);
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return -ENOEXEC;
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} else {
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shell_print(shell, "BR/EDR set/reset connectable done");
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}
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return 0;
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}
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static int cmd_oob(const struct shell *shell, size_t argc, char *argv[])
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{
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char addr[BT_ADDR_STR_LEN];
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struct bt_br_oob oob;
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int err;
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err = bt_br_oob_get_local(&oob);
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if (err) {
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shell_print(shell, "BR/EDR OOB data failed");
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return -ENOEXEC;
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}
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bt_addr_to_str(&oob.addr, addr, sizeof(addr));
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shell_print(shell, "BR/EDR OOB data:");
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shell_print(shell, " addr %s", addr);
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return 0;
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}
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static uint8_t sdp_hfp_ag_user(struct bt_conn *conn,
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struct bt_sdp_client_result *result)
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{
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char addr[BT_ADDR_STR_LEN];
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uint16_t param, version;
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uint16_t features;
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int res;
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conn_addr_str(conn, addr, sizeof(addr));
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if (result) {
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shell_print(ctx_shell, "SDP HFPAG data@%p (len %u) hint %u from"
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" remote %s", result->resp_buf,
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result->resp_buf->len, result->next_record_hint,
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addr);
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/*
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* Focus to get BT_SDP_ATTR_PROTO_DESC_LIST attribute item to
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* get HFPAG Server Channel Number operating on RFCOMM protocol.
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*/
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res = bt_sdp_get_proto_param(result->resp_buf,
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BT_SDP_PROTO_RFCOMM, ¶m);
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if (res < 0) {
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shell_error(ctx_shell, "Error getting Server CN, "
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"err %d", res);
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goto done;
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}
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shell_print(ctx_shell, "HFPAG Server CN param 0x%04x", param);
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res = bt_sdp_get_profile_version(result->resp_buf,
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BT_SDP_HANDSFREE_SVCLASS,
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&version);
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if (res < 0) {
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shell_error(ctx_shell, "Error getting profile version, "
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"err %d", res);
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goto done;
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}
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shell_print(ctx_shell, "HFP version param 0x%04x", version);
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/*
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* Focus to get BT_SDP_ATTR_SUPPORTED_FEATURES attribute item to
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* get profile Supported Features mask.
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*/
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res = bt_sdp_get_features(result->resp_buf, &features);
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if (res < 0) {
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shell_error(ctx_shell, "Error getting HFPAG Features, "
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"err %d", res);
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goto done;
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}
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shell_print(ctx_shell, "HFPAG Supported Features param 0x%04x",
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features);
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} else {
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shell_print(ctx_shell, "No SDP HFPAG data from remote %s",
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addr);
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}
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done:
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return BT_SDP_DISCOVER_UUID_CONTINUE;
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}
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static uint8_t sdp_a2src_user(struct bt_conn *conn,
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struct bt_sdp_client_result *result)
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{
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char addr[BT_ADDR_STR_LEN];
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uint16_t param, version;
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uint16_t features;
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int res;
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conn_addr_str(conn, addr, sizeof(addr));
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if (result) {
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shell_print(ctx_shell, "SDP A2SRC data@%p (len %u) hint %u from"
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" remote %s", result->resp_buf,
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result->resp_buf->len, result->next_record_hint,
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addr);
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/*
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* Focus to get BT_SDP_ATTR_PROTO_DESC_LIST attribute item to
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* get A2SRC Server PSM Number.
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*/
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res = bt_sdp_get_proto_param(result->resp_buf,
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BT_SDP_PROTO_L2CAP, ¶m);
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if (res < 0) {
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shell_error(ctx_shell, "A2SRC PSM Number not found, "
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"err %d", res);
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goto done;
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}
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shell_print(ctx_shell, "A2SRC Server PSM Number param 0x%04x",
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param);
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/*
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* Focus to get BT_SDP_ATTR_PROFILE_DESC_LIST attribute item to
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* get profile version number.
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*/
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res = bt_sdp_get_profile_version(result->resp_buf,
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BT_SDP_ADVANCED_AUDIO_SVCLASS,
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&version);
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if (res < 0) {
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shell_error(ctx_shell, "A2SRC version not found, "
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"err %d", res);
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goto done;
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}
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shell_print(ctx_shell, "A2SRC version param 0x%04x", version);
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/*
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* Focus to get BT_SDP_ATTR_SUPPORTED_FEATURES attribute item to
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* get profile supported features mask.
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*/
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res = bt_sdp_get_features(result->resp_buf, &features);
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if (res < 0) {
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shell_error(ctx_shell, "A2SRC Features not found, "
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"err %d", res);
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goto done;
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}
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shell_print(ctx_shell, "A2SRC Supported Features param 0x%04x",
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features);
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} else {
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shell_print(ctx_shell, "No SDP A2SRC data from remote %s",
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addr);
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}
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done:
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return BT_SDP_DISCOVER_UUID_CONTINUE;
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}
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static struct bt_sdp_discover_params discov_hfpag = {
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.uuid = BT_UUID_DECLARE_16(BT_SDP_HANDSFREE_AGW_SVCLASS),
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.func = sdp_hfp_ag_user,
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.pool = &sdp_client_pool,
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};
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static struct bt_sdp_discover_params discov_a2src = {
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.uuid = BT_UUID_DECLARE_16(BT_SDP_AUDIO_SOURCE_SVCLASS),
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.func = sdp_a2src_user,
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.pool = &sdp_client_pool,
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};
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static struct bt_sdp_discover_params discov;
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static int cmd_sdp_find_record(const struct shell *shell,
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size_t argc, char *argv[])
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{
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int res;
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const char *action;
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if (!default_conn) {
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shell_print(shell, "Not connected");
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return 0;
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}
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action = argv[1];
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if (!strcmp(action, "HFPAG")) {
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discov = discov_hfpag;
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} else if (!strcmp(action, "A2SRC")) {
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discov = discov_a2src;
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} else {
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shell_help(shell);
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return 0;
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}
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shell_print(shell, "SDP UUID \'%s\' gets applied", action);
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res = bt_sdp_discover(default_conn, &discov);
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if (res) {
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shell_error(shell, "SDP discovery failed: result %d", res);
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return -ENOEXEC;
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} else {
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shell_print(shell, "SDP discovery started");
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}
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return 0;
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}
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#define HELP_NONE "[none]"
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#define HELP_ADDR_LE "<address: XX:XX:XX:XX:XX:XX> <type: (public|random)>"
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SHELL_STATIC_SUBCMD_SET_CREATE(br_cmds,
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SHELL_CMD_ARG(auth-pincode, NULL, "<pincode>", cmd_auth_pincode, 2, 0),
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SHELL_CMD_ARG(connect, NULL, "<address>", cmd_connect, 2, 0),
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SHELL_CMD_ARG(discovery, NULL,
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"<value: on, off> [length: 1-48] [mode: limited]",
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cmd_discovery, 2, 2),
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SHELL_CMD_ARG(iscan, NULL, "<value: on, off>", cmd_discoverable, 2, 0),
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SHELL_CMD_ARG(l2cap-register, NULL, "<psm>", cmd_l2cap_register, 2, 0),
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|
SHELL_CMD_ARG(oob, NULL, NULL, cmd_oob, 1, 0),
|
|
SHELL_CMD_ARG(pscan, NULL, "<value: on, off>", cmd_connectable, 2, 0),
|
|
SHELL_CMD_ARG(sdp-find, NULL, "<HFPAG>", cmd_sdp_find_record, 2, 0),
|
|
SHELL_SUBCMD_SET_END
|
|
);
|
|
|
|
static int cmd_br(const struct shell *shell, size_t argc, char **argv)
|
|
{
|
|
if (argc == 1) {
|
|
shell_help(shell);
|
|
/* shell returns 1 when help is printed */
|
|
return 1;
|
|
}
|
|
|
|
shell_error(shell, "%s unknown parameter: %s", argv[0], argv[1]);
|
|
|
|
return -ENOEXEC;
|
|
}
|
|
|
|
SHELL_CMD_ARG_REGISTER(br, &br_cmds, "Bluetooth BR/EDR shell commands", cmd_br,
|
|
1, 1);
|