blob: 95e9baa9c2e8d5bc81d894f02f9f3868d82cee7a [file] [log] [blame]
/******************************************************************************
*
* Copyright 2014 Google, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#define LOG_TAG "bt_btif_config"
#include "btif_config.h"
#include <base/logging.h>
#include <openssl/rand.h>
#include <unistd.h>
#include <cctype>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <functional>
#include <mutex>
#include <sstream>
#include <string>
#include <unordered_map>
#include "btcore/include/module.h"
#include "btif_api.h"
#include "btif_common.h"
#include "btif_config_cache.h"
#include "btif_config_transcode.h"
#include "btif_keystore.h"
#include "btif_metrics_logging.h"
#include "common/address_obfuscator.h"
#include "common/metric_id_allocator.h"
#include "main/shim/config.h"
#include "main/shim/shim.h"
#include "osi/include/alarm.h"
#include "osi/include/allocator.h"
#include "osi/include/compat.h"
#include "osi/include/config.h"
#include "osi/include/log.h"
#include "osi/include/osi.h"
#include "osi/include/properties.h"
#include "raw_address.h"
#define BT_CONFIG_SOURCE_TAG_NUM 1010001
#define TEMPORARY_SECTION_CAPACITY 10000
#define INFO_SECTION "Info"
#define FILE_TIMESTAMP "TimeCreated"
#define FILE_SOURCE "FileSource"
#define TIME_STRING_LENGTH sizeof("YYYY-MM-DD HH:MM:SS")
#define DISABLED "disabled"
static const char* TIME_STRING_FORMAT = "%Y-%m-%d %H:%M:%S";
#define BT_CONFIG_METRICS_SECTION "Metrics"
#define BT_CONFIG_METRICS_SALT_256BIT "Salt256Bit"
#define BT_CONFIG_METRICS_ID_KEY "MetricsId"
using bluetooth::bluetooth_keystore::BluetoothKeystoreInterface;
using bluetooth::common::AddressObfuscator;
using bluetooth::common::MetricIdAllocator;
// TODO(armansito): Find a better way than searching by a hardcoded path.
#if defined(OS_GENERIC)
static const char* CONFIG_FILE_PATH = "bt_config.conf";
static const char* CONFIG_BACKUP_PATH = "bt_config.bak";
static const char* CONFIG_LEGACY_FILE_PATH = "bt_config.xml";
#else // !defined(OS_GENERIC)
static const char* CONFIG_FILE_PATH = "/data/misc/bluedroid/bt_config.conf";
static const char* CONFIG_BACKUP_PATH = "/data/misc/bluedroid/bt_config.bak";
static const char* CONFIG_LEGACY_FILE_PATH =
"/data/misc/bluedroid/bt_config.xml";
#endif // defined(OS_GENERIC)
static const uint64_t CONFIG_SETTLE_PERIOD_MS = 3000;
static void timer_config_save_cb(void* data);
static void btif_config_write(uint16_t event, char* p_param);
static bool is_factory_reset(void);
static void delete_config_files(void);
static std::unique_ptr<config_t> btif_config_open(const char* filename);
// Key attestation
static bool config_checksum_pass(int check_bit) {
return ((get_common_criteria_config_compare_result() & check_bit) ==
check_bit);
}
static bool btif_in_encrypt_key_name_list(std::string key);
static const int CONFIG_FILE_COMPARE_PASS = 1;
static const int CONFIG_BACKUP_COMPARE_PASS = 2;
static const std::string ENCRYPTED_STR = "encrypted";
static const std::string CONFIG_FILE_PREFIX = "bt_config-origin";
static const std::string CONFIG_FILE_HASH = "hash";
static const int ENCRYPT_KEY_NAME_LIST_SIZE = 7;
static const std::string encrypt_key_name_list[] = {
"LinkKey", "LE_KEY_PENC", "LE_KEY_PID", "LE_KEY_LID",
"LE_KEY_PCSRK", "LE_KEY_LENC", "LE_KEY_LCSRK"};
static enum ConfigSource {
NOT_LOADED,
ORIGINAL,
BACKUP,
LEGACY,
NEW_FILE,
RESET
} btif_config_source = NOT_LOADED;
static char btif_config_time_created[TIME_STRING_LENGTH];
static BluetoothKeystoreInterface* get_bluetooth_keystore_interface() {
return bluetooth::bluetooth_keystore::getBluetoothKeystoreInterface();
}
// TODO(zachoverflow): Move these two functions out, because they are too
// specific for this file
// {grumpy-cat/no, monty-python/you-make-me-sad}
bool btif_get_device_type(const RawAddress& bda, int* p_device_type) {
if (p_device_type == NULL) return false;
std::string addrstr = bda.ToString();
const char* bd_addr_str = addrstr.c_str();
if (!btif_config_get_int(bd_addr_str, "DevType", p_device_type)) return false;
LOG_INFO("Device [%s] device type %d", bd_addr_str, *p_device_type);
return true;
}
bool btif_get_address_type(const RawAddress& bda, tBLE_ADDR_TYPE* p_addr_type) {
if (p_addr_type == NULL) return false;
std::string addrstr = bda.ToString();
const char* bd_addr_str = addrstr.c_str();
int val = 0;
if (!btif_config_get_int(bd_addr_str, "AddrType", &val)) return false;
*p_addr_type = static_cast<tBLE_ADDR_TYPE>(val);
LOG_DEBUG("Device [%s] address type %s", bd_addr_str,
AddressTypeText(*p_addr_type).c_str());
return true;
}
/**
* Read metrics salt from config file, if salt is invalid or does not exist,
* generate new one and save it to config
*/
static void read_or_set_metrics_salt() {
AddressObfuscator::Octet32 metrics_salt = {};
size_t metrics_salt_length = metrics_salt.size();
if (!btif_config_get_bin(BT_CONFIG_METRICS_SECTION,
BT_CONFIG_METRICS_SALT_256BIT, metrics_salt.data(),
&metrics_salt_length)) {
LOG(WARNING) << __func__ << ": Failed to read metrics salt from config";
// Invalidate salt
metrics_salt.fill(0);
}
if (metrics_salt_length != metrics_salt.size()) {
LOG(ERROR) << __func__ << ": Metrics salt length incorrect, "
<< metrics_salt_length << " instead of " << metrics_salt.size();
// Invalidate salt
metrics_salt.fill(0);
}
if (!AddressObfuscator::IsSaltValid(metrics_salt)) {
LOG(INFO) << __func__ << ": Metrics salt is not invalid, creating new one";
if (RAND_bytes(metrics_salt.data(), metrics_salt.size()) != 1) {
LOG(FATAL) << __func__ << "Failed to generate salt for metrics";
}
if (!btif_config_set_bin(BT_CONFIG_METRICS_SECTION,
BT_CONFIG_METRICS_SALT_256BIT, metrics_salt.data(),
metrics_salt.size())) {
LOG(FATAL) << __func__ << "Failed to write metrics salt to config";
}
}
AddressObfuscator::GetInstance()->Initialize(metrics_salt);
}
/**
* Initialize metric id allocator by reading metric_id from config by mac
* address. If there is no metric id for a mac address, then allocate it a new
* metric id.
*/
static void init_metric_id_allocator() {
std::unordered_map<RawAddress, int> paired_device_map;
// When user update the system, there will be devices paired with older
// version of android without a metric id.
std::vector<RawAddress> addresses_without_id;
for (const auto& mac_address : btif_config_get_paired_devices()) {
auto addr_str = mac_address.ToString();
// if the section name is a mac address
bool is_valid_id_found = false;
if (btif_config_exist(addr_str, BT_CONFIG_METRICS_ID_KEY)) {
// there is one metric id under this mac_address
int id = 0;
btif_config_get_int(addr_str, BT_CONFIG_METRICS_ID_KEY, &id);
if (is_valid_id_from_metric_id_allocator(id)) {
paired_device_map[mac_address] = id;
is_valid_id_found = true;
}
}
if (!is_valid_id_found) {
addresses_without_id.push_back(mac_address);
}
}
// Initialize MetricIdAllocator
MetricIdAllocator::Callback save_device_callback =
[](const RawAddress& address, const int id) {
return btif_config_set_int(address.ToString(), BT_CONFIG_METRICS_ID_KEY,
id);
};
MetricIdAllocator::Callback forget_device_callback =
[](const RawAddress& address, const int id) {
return btif_config_remove(address.ToString(), BT_CONFIG_METRICS_ID_KEY);
};
if (!init_metric_id_allocator(paired_device_map,
std::move(save_device_callback),
std::move(forget_device_callback))) {
LOG(FATAL) << __func__ << "Failed to initialize MetricIdAllocator";
}
// Add device_without_id
for (auto& address : addresses_without_id) {
allocate_metric_id_from_metric_id_allocator(address);
save_metric_id_from_metric_id_allocator(address);
}
}
static std::recursive_mutex config_lock; // protects operations on |config|.
static alarm_t* config_timer;
// limited btif config cache capacity
static BtifConfigCache btif_config_cache(TEMPORARY_SECTION_CAPACITY);
// Module lifecycle functions
static future_t* init(void) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
// TODO (b/158035889) Migrate metrics module to GD
read_or_set_metrics_salt();
init_metric_id_allocator();
return future_new_immediate(FUTURE_SUCCESS);
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
std::unique_ptr<config_t> config;
if (is_factory_reset()) delete_config_files();
std::string file_source;
if (config_checksum_pass(CONFIG_FILE_COMPARE_PASS)) {
config = btif_config_open(CONFIG_FILE_PATH);
btif_config_source = ORIGINAL;
}
if (!config) {
LOG_WARN("%s unable to load config file: %s; using backup.", __func__,
CONFIG_FILE_PATH);
if (config_checksum_pass(CONFIG_BACKUP_COMPARE_PASS)) {
config = btif_config_open(CONFIG_BACKUP_PATH);
btif_config_source = BACKUP;
file_source = "Backup";
}
}
if (!config) {
LOG_WARN("%s unable to load backup; attempting to transcode legacy file.",
__func__);
config = btif_config_transcode(CONFIG_LEGACY_FILE_PATH);
btif_config_source = LEGACY;
file_source = "Legacy";
}
if (!config) {
LOG_ERROR("%s unable to transcode legacy file; creating empty config.",
__func__);
config = config_new_empty();
btif_config_source = NEW_FILE;
file_source = "Empty";
}
// move persistent config data from btif_config file to btif config cache
btif_config_cache.Init(std::move(config));
if (!file_source.empty()) {
btif_config_cache.SetString(INFO_SECTION, FILE_SOURCE, file_source);
}
// Cleanup temporary pairings if we have left guest mode
if (!is_restricted_mode()) {
btif_config_cache.RemovePersistentSectionsWithKey("Restricted");
}
// Read or set config file creation timestamp
auto time_str = btif_config_cache.GetString(INFO_SECTION, FILE_TIMESTAMP);
if (!time_str) {
time_t current_time = time(NULL);
struct tm* time_created = localtime(&current_time);
strftime(btif_config_time_created, TIME_STRING_LENGTH, TIME_STRING_FORMAT,
time_created);
btif_config_cache.SetString(INFO_SECTION, FILE_TIMESTAMP,
btif_config_time_created);
} else {
strlcpy(btif_config_time_created, time_str->c_str(), TIME_STRING_LENGTH);
}
// Read or set metrics 256 bit hashing salt
read_or_set_metrics_salt();
// Initialize MetricIdAllocator
init_metric_id_allocator();
// TODO(sharvil): use a non-wake alarm for this once we have
// API support for it. There's no need to wake the system to
// write back to disk.
config_timer = alarm_new("btif.config");
if (!config_timer) {
LOG_ERROR("%s unable to create alarm.", __func__);
goto error;
}
LOG_EVENT_INT(BT_CONFIG_SOURCE_TAG_NUM, btif_config_source);
return future_new_immediate(FUTURE_SUCCESS);
error:
alarm_free(config_timer);
config.reset();
btif_config_cache.Clear();
config_timer = NULL;
btif_config_source = NOT_LOADED;
return future_new_immediate(FUTURE_FAIL);
}
static std::unique_ptr<config_t> btif_config_open(const char* filename) {
std::unique_ptr<config_t> config = config_new(filename);
if (!config) return nullptr;
if (!config_has_section(*config, "Adapter")) {
LOG_ERROR("Config is missing adapter section");
return nullptr;
}
return config;
}
static future_t* shut_down(void) {
btif_config_flush();
return future_new_immediate(FUTURE_SUCCESS);
}
static future_t* clean_up(void) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
// GD storage module cleanup by itself
std::unique_lock<std::recursive_mutex> lock(config_lock);
close_metric_id_allocator();
return future_new_immediate(FUTURE_SUCCESS);
}
btif_config_flush();
alarm_free(config_timer);
config_timer = NULL;
std::unique_lock<std::recursive_mutex> lock(config_lock);
get_bluetooth_keystore_interface()->clear_map();
close_metric_id_allocator();
btif_config_cache.Clear();
return future_new_immediate(FUTURE_SUCCESS);
}
EXPORT_SYMBOL module_t btif_config_module = {.name = BTIF_CONFIG_MODULE,
.init = init,
.start_up = NULL,
.shut_down = shut_down,
.clean_up = clean_up};
bool btif_config_exist(const std::string& section, const std::string& key) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::HasProperty(section, key);
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
return btif_config_cache.HasKey(section, key);
}
bool btif_config_get_int(const std::string& section, const std::string& key,
int* value) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::GetInt(section, key, value);
}
CHECK(value != NULL);
std::unique_lock<std::recursive_mutex> lock(config_lock);
auto ret = btif_config_cache.GetInt(section, key);
if (!ret) {
return false;
}
*value = *ret;
return true;
}
bool btif_config_set_int(const std::string& section, const std::string& key,
int value) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::SetInt(section, key, value);
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
btif_config_cache.SetInt(section, key, value);
return true;
}
bool btif_config_get_uint64(const std::string& section, const std::string& key,
uint64_t* value) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::GetUint64(section, key, value);
}
CHECK(value != NULL);
std::unique_lock<std::recursive_mutex> lock(config_lock);
auto ret = btif_config_cache.GetUint64(section, key);
if (!ret) {
return false;
}
*value = *ret;
return true;
}
bool btif_config_set_uint64(const std::string& section, const std::string& key,
uint64_t value) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::SetUint64(section, key, value);
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
btif_config_cache.SetUint64(section, key, value);
return true;
}
/*******************************************************************************
*
* Function btif_config_get_str
*
* Description Get the string value associated with a particular section
* and key.
*
* section : The section name (i.e "Adapter")
* key : The key name (i.e "Address")
* value : A pointer to a buffer where we will store the value
* size_bytes : The size of the buffer we have available to
* write the value into. Will be updated upon
* returning to contain the number of bytes
* written.
*
* Returns True if a value was found, False otherwise.
*
******************************************************************************/
bool btif_config_get_str(const std::string& section, const std::string& key,
char* value, int* size_bytes) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::GetStr(section, key, value,
size_bytes);
}
CHECK(value != NULL);
CHECK(size_bytes != NULL);
{
std::unique_lock<std::recursive_mutex> lock(config_lock);
auto stored_value = btif_config_cache.GetString(section, key);
if (!stored_value) return false;
strlcpy(value, stored_value->c_str(), *size_bytes);
}
*size_bytes = strlen(value) + 1;
return true;
}
bool btif_config_set_str(const std::string& section, const std::string& key,
const std::string& value) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::SetStr(section, key, value);
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
btif_config_cache.SetString(section, key, value);
return true;
}
static bool btif_in_encrypt_key_name_list(std::string key) {
return std::find(encrypt_key_name_list,
encrypt_key_name_list + ENCRYPT_KEY_NAME_LIST_SIZE,
key) != (encrypt_key_name_list + ENCRYPT_KEY_NAME_LIST_SIZE);
}
bool btif_config_get_bin(const std::string& section, const std::string& key,
uint8_t* value, size_t* length) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::GetBin(section, key, value,
length);
}
CHECK(value != NULL);
CHECK(length != NULL);
std::unique_lock<std::recursive_mutex> lock(config_lock);
const std::string* value_str;
auto value_str_from_config = btif_config_cache.GetString(section, key);
if (!value_str_from_config) {
VLOG(1) << __func__ << ": cannot find string for section " << section
<< ", key " << key;
return false;
}
bool in_encrypt_key_name_list = btif_in_encrypt_key_name_list(key);
bool is_key_encrypted = *value_str_from_config == ENCRYPTED_STR;
std::string string;
if (!value_str_from_config->empty() && in_encrypt_key_name_list &&
is_key_encrypted) {
string = get_bluetooth_keystore_interface()->get_key(section + "-" + key);
value_str = &string;
} else {
value_str = &value_str_from_config.value();
}
size_t value_len = value_str->length();
if ((value_len % 2) != 0 || *length < (value_len / 2)) {
LOG(WARNING) << ": value size not divisible by 2, size is " << value_len;
return false;
}
for (size_t i = 0; i < value_len; ++i)
if (!isxdigit(value_str->c_str()[i])) {
LOG(WARNING) << ": value is not hex digit";
return false;
}
const char* ptr = value_str->c_str();
for (*length = 0; *ptr; ptr += 2, *length += 1) {
sscanf(ptr, "%02hhx", &value[*length]);
}
if (is_common_criteria_mode()) {
if (!value_str_from_config->empty() && in_encrypt_key_name_list &&
!is_key_encrypted) {
get_bluetooth_keystore_interface()->set_encrypt_key_or_remove_key(
section + "-" + key, *value_str_from_config);
btif_config_cache.SetString(section, key, ENCRYPTED_STR);
}
} else {
if (in_encrypt_key_name_list && is_key_encrypted) {
btif_config_cache.SetString(section, key, *value_str);
}
}
return true;
}
size_t btif_config_get_bin_length(const std::string& section,
const std::string& key) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::GetBinLength(section, key);
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
auto value_str = btif_config_cache.GetString(section, key);
if (!value_str) return 0;
size_t value_len = value_str->length();
return ((value_len % 2) != 0) ? 0 : (value_len / 2);
}
bool btif_config_set_bin(const std::string& section, const std::string& key,
const uint8_t* value, size_t length) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::SetBin(section, key, value,
length);
}
const char* lookup = "0123456789abcdef";
if (length > 0) CHECK(value != NULL);
size_t max_value = ((size_t)-1);
if (((max_value - 1) / 2) < length) {
LOG(ERROR) << __func__ << ": length too long";
return false;
}
char* str = (char*)osi_calloc(length * 2 + 1);
for (size_t i = 0; i < length; ++i) {
str[(i * 2) + 0] = lookup[(value[i] >> 4) & 0x0F];
str[(i * 2) + 1] = lookup[value[i] & 0x0F];
}
std::string value_str;
if ((length > 0) && is_common_criteria_mode() &&
btif_in_encrypt_key_name_list(key)) {
get_bluetooth_keystore_interface()->set_encrypt_key_or_remove_key(
section + "-" + key, str);
value_str = ENCRYPTED_STR;
} else {
value_str = str;
}
{
std::unique_lock<std::recursive_mutex> lock(config_lock);
btif_config_cache.SetString(section, key, value_str);
}
osi_free(str);
return true;
}
std::vector<RawAddress> btif_config_get_paired_devices() {
std::vector<std::string> names;
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
names = bluetooth::shim::BtifConfigInterface::GetPersistentDevices();
} else {
std::unique_lock<std::recursive_mutex> lock(config_lock);
names = btif_config_cache.GetPersistentSectionNames();
}
std::vector<RawAddress> result;
result.reserve(names.size());
for (const auto& name : names) {
RawAddress addr = {};
// Gather up known devices from configuration section names
if (RawAddress::FromString(name, addr)) {
result.emplace_back(addr);
}
}
return result;
}
bool btif_config_remove(const std::string& section, const std::string& key) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
return bluetooth::shim::BtifConfigInterface::RemoveProperty(section, key);
}
if (is_common_criteria_mode() && btif_in_encrypt_key_name_list(key)) {
get_bluetooth_keystore_interface()->set_encrypt_key_or_remove_key(
section + "-" + key, "");
}
std::unique_lock<std::recursive_mutex> lock(config_lock);
return btif_config_cache.RemoveKey(section, key);
}
void btif_config_save(void) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
bluetooth::shim::BtifConfigInterface::Save();
return;
}
CHECK(config_timer != NULL);
alarm_set(config_timer, CONFIG_SETTLE_PERIOD_MS, timer_config_save_cb, NULL);
}
void btif_config_flush(void) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
bluetooth::shim::BtifConfigInterface::Flush();
return;
}
CHECK(config_timer != NULL);
alarm_cancel(config_timer);
btif_config_write(0, NULL);
}
bool btif_config_clear(void) {
if (bluetooth::shim::is_any_gd_enabled()) {
CHECK(bluetooth::shim::is_gd_stack_started_up());
bluetooth::shim::BtifConfigInterface::Clear();
bluetooth::shim::BtifConfigInterface::Save();
return true;
}
CHECK(config_timer != NULL);
alarm_cancel(config_timer);
std::unique_lock<std::recursive_mutex> lock(config_lock);
btif_config_cache.Clear();
bool ret =
config_save(btif_config_cache.PersistentSectionCopy(), CONFIG_FILE_PATH);
btif_config_source = RESET;
return ret;
}
static void timer_config_save_cb(UNUSED_ATTR void* data) {
// Moving file I/O to btif context instead of timer callback because
// it usually takes a lot of time to be completed, introducing
// delays during A2DP playback causing blips or choppiness.
btif_transfer_context(btif_config_write, 0, NULL, 0, NULL);
}
static void btif_config_write(UNUSED_ATTR uint16_t event,
UNUSED_ATTR char* p_param) {
CHECK(config_timer != NULL);
std::unique_lock<std::recursive_mutex> lock(config_lock);
rename(CONFIG_FILE_PATH, CONFIG_BACKUP_PATH);
config_save(btif_config_cache.PersistentSectionCopy(), CONFIG_FILE_PATH);
if (is_common_criteria_mode()) {
get_bluetooth_keystore_interface()->set_encrypt_key_or_remove_key(
CONFIG_FILE_PREFIX, CONFIG_FILE_HASH);
}
}
void btif_debug_config_dump(int fd) {
dprintf(fd, "\nBluetooth Config:\n");
dprintf(fd, " Config Source: ");
switch (btif_config_source) {
case NOT_LOADED:
dprintf(fd, "Not loaded\n");
break;
case ORIGINAL:
dprintf(fd, "Original file\n");
break;
case BACKUP:
dprintf(fd, "Backup file\n");
break;
case LEGACY:
dprintf(fd, "Legacy file\n");
break;
case NEW_FILE:
dprintf(fd, "New file\n");
break;
case RESET:
dprintf(fd, "Reset file\n");
break;
}
std::optional<std::string> file_source;
if (bluetooth::shim::is_gd_stack_started_up()) {
CHECK(bluetooth::shim::is_any_gd_enabled());
file_source =
bluetooth::shim::BtifConfigInterface::GetStr(INFO_SECTION, FILE_SOURCE);
} else {
file_source = btif_config_cache.GetString(INFO_SECTION, FILE_SOURCE);
}
if (!file_source) {
file_source.emplace("Original");
}
auto devices = btif_config_cache.GetPersistentSectionNames();
dprintf(fd, " Devices loaded: %zu\n", devices.size());
dprintf(fd, " File created/tagged: %s\n", btif_config_time_created);
dprintf(fd, " File source: %s\n", file_source->c_str());
}
static bool is_factory_reset(void) {
char factory_reset[PROPERTY_VALUE_MAX] = {0};
osi_property_get("persist.bluetooth.factoryreset", factory_reset, "false");
return strncmp(factory_reset, "true", 4) == 0;
}
static void delete_config_files(void) {
remove(CONFIG_FILE_PATH);
remove(CONFIG_BACKUP_PATH);
osi_property_set("persist.bluetooth.factoryreset", "false");
}