Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 | /*
* Copyright (c) 2018 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <errno.h>
#include <zephyr.h>
#include <settings/settings.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/conn.h>
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_SETTINGS)
#define LOG_MODULE_NAME bt_settings
#include "common/log.h"
#include "hci_core.h"
#include "settings.h"
/* Linker-defined symbols bound to the bt_settings_handler structs */
extern const struct bt_settings_handler _bt_settings_start[];
extern const struct bt_settings_handler _bt_settings_end[];
void bt_settings_encode_key(char *path, size_t path_size, const char *subsys,
bt_addr_le_t *addr, const char *key)
{
if (key) {
snprintk(path, path_size,
"bt/%s/%02x%02x%02x%02x%02x%02x%u/%s", subsys,
addr->a.val[5], addr->a.val[4], addr->a.val[3],
addr->a.val[2], addr->a.val[1], addr->a.val[0],
addr->type, key);
} else {
snprintk(path, path_size,
"bt/%s/%02x%02x%02x%02x%02x%02x%u", subsys,
addr->a.val[5], addr->a.val[4], addr->a.val[3],
addr->a.val[2], addr->a.val[1], addr->a.val[0],
addr->type);
}
BT_DBG("Encoded path %s", log_strdup(path));
}
int bt_settings_decode_key(char *key, bt_addr_le_t *addr)
{
bool high;
int i;
if (strlen(key) != 13) {
return -EINVAL;
}
if (key[12] == '0') {
addr->type = BT_ADDR_LE_PUBLIC;
} else if (key[12] == '1') {
addr->type = BT_ADDR_LE_RANDOM;
} else {
return -EINVAL;
}
for (i = 5, high = true; i >= 0; key++) {
u8_t nibble;
if (*key >= '0' && *key <= '9') {
nibble = *key - '0';
} else if (*key >= 'a' && *key <= 'f') {
nibble = *key - 'a' + 10;
} else {
return -EINVAL;
}
if (high) {
addr->a.val[i] = nibble << 4;
high = false;
} else {
addr->a.val[i] |= nibble;
high = true;
i--;
}
}
BT_DBG("Decoded %s as %s", log_strdup(key), bt_addr_le_str(addr));
return 0;
}
static int set(int argc, char **argv, void *value_ctx)
{
int len;
if (argc > 1) {
const struct bt_settings_handler *h;
for (h = _bt_settings_start; h < _bt_settings_end; h++) {
if (!strcmp(argv[0], h->name)) {
argc--;
argv++;
return h->set(argc, argv, value_ctx);
}
}
return -ENOENT;
}
if (!strcmp(argv[0], "id")) {
/* Any previously provided identities supersede flash */
if (atomic_test_bit(bt_dev.flags, BT_DEV_PRESET_ID)) {
BT_WARN("Ignoring identities stored in flash");
return 0;
}
len = settings_val_read_cb(value_ctx, &bt_dev.id_addr,
sizeof(bt_dev.id_addr));
if (len < sizeof(bt_dev.id_addr[0])) {
if (len < 0) {
BT_ERR("Failed to read ID address from storage"
" (err %d)", len);
} else {
BT_ERR("Invalid length ID address in storage");
BT_HEXDUMP_DBG(&bt_dev.id_addr, len,
"data read");
}
(void)memset(bt_dev.id_addr, 0,
sizeof(bt_dev.id_addr));
bt_dev.id_count = 0U;
} else {
int i;
bt_dev.id_count = len / sizeof(bt_dev.id_addr[0]);
for (i = 0; i < bt_dev.id_count; i++) {
BT_DBG("ID[%d] %s", i,
bt_addr_le_str(&bt_dev.id_addr[i]));
}
}
return 0;
}
#if defined(CONFIG_BT_DEVICE_NAME_DYNAMIC)
if (!strcmp(argv[0], "name")) {
len = settings_val_read_cb(value_ctx, &bt_dev.name,
sizeof(bt_dev.name) - 1);
if (len < 0) {
BT_ERR("Failed to read device name from storage"
" (err %d)", len);
} else {
bt_dev.name[len] = '\0';
BT_DBG("Name set to %s", bt_dev.name);
}
return 0;
}
#endif
#if defined(CONFIG_BT_PRIVACY)
if (!strcmp(argv[0], "irk")) {
len = settings_val_read_cb(value_ctx, bt_dev.irk,
sizeof(bt_dev.irk));
if (len < sizeof(bt_dev.irk[0])) {
if (len < 0) {
BT_ERR("Failed to read IRK from storage"
" (err %d)", len);
} else {
BT_ERR("Invalid length IRK in storage");
(void)memset(bt_dev.irk, 0, sizeof(bt_dev.irk));
}
} else {
int i, count;
count = len / sizeof(bt_dev.irk[0]);
for (i = 0; i < count; i++) {
BT_DBG("IRK[%d] %s", i,
bt_hex(bt_dev.irk[i], 16));
}
}
return 0;
}
#endif /* CONFIG_BT_PRIVACY */
return 0;
}
#define ID_DATA_LEN(array) (bt_dev.id_count * sizeof(array[0]))
static void save_id(struct k_work *work)
{
int err;
err = settings_save_one("bt/id", &bt_dev.id_addr,
ID_DATA_LEN(bt_dev.id_addr));
if (err) {
BT_ERR("Failed to save ID (err %d)", err);
}
#if defined(CONFIG_BT_PRIVACY)
err = settings_save_one("bt/irk", bt_dev.irk, ID_DATA_LEN(bt_dev.irk));
if (err) {
BT_ERR("Failed to save IRK (err %d)", err);
}
#endif
}
K_WORK_DEFINE(save_id_work, save_id);
void bt_settings_save_id(void)
{
k_work_submit(&save_id_work);
}
static int commit(void)
{
const struct bt_settings_handler *h;
BT_DBG("");
#if defined(CONFIG_BT_DEVICE_NAME_DYNAMIC)
if (bt_dev.name[0] == '\0') {
bt_set_name(CONFIG_BT_DEVICE_NAME);
}
#endif
if (!bt_dev.id_count) {
int err;
err = bt_setup_id_addr();
if (err) {
BT_ERR("Unable to setup an identity address");
return err;
}
}
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
bt_finalize_init();
}
for (h = _bt_settings_start; h < _bt_settings_end; h++) {
if (h->commit) {
h->commit();
}
}
return 0;
}
static int export(int (*export_func)(const char *name, void *val,
size_t val_len))
{
const struct bt_settings_handler *h;
for (h = _bt_settings_start; h < _bt_settings_end; h++) {
if (h->export) {
h->export(export_func);
}
}
return 0;
}
static struct settings_handler bt_settings = {
.name = "bt",
.h_set = set,
.h_commit = commit,
.h_export = export,
};
int bt_settings_init(void)
{
int err;
BT_DBG("");
err = settings_subsys_init();
if (err) {
BT_ERR("settings_subsys_init failed (err %d)", err);
return err;
}
err = settings_register(&bt_settings);
if (err) {
BT_ERR("settings_register failed (err %d)", err);
return err;
}
return 0;
}
|