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/*
* Copyright 2020 The Android Open Source Project
*
* 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.
*/
#include "storage/device.h"
#include <algorithm>
#include <limits>
#include "os/log.h"
#include "storage/classic_device.h"
#include "storage/config_cache_helper.h"
#include "storage/le_device.h"
namespace bluetooth {
namespace storage {
using hci::DeviceType;
namespace {
// TODO(siyuanh): also defined in storage/le_device.cc
const std::string kLeIdentityAddressKey = "LeIdentityAddr";
const std::string kLeLegacyPseudoAddr = "LeLegacyPseudoAddr";
std::string GetConfigSection(
ConfigCache* config, const hci::Address& key_address, Device::ConfigKeyAddressType key_address_type) {
ASSERT_LOG(config != nullptr, "config cannot be null");
ASSERT_LOG(!key_address.IsEmpty(), "key_address cannot be empty");
// assume lower case
auto key_address_string = key_address.ToString();
switch (key_address_type) {
case Device::ConfigKeyAddressType::LEGACY_KEY_ADDRESS:
case Device::ConfigKeyAddressType::CLASSIC_ADDRESS:
return key_address_string;
case Device::ConfigKeyAddressType::LE_IDENTITY_ADDRESS:
for (const auto& section_and_property : config->GetSectionNamesWithProperty(kLeIdentityAddressKey)) {
if (section_and_property.property == key_address_string) {
return section_and_property.section;
}
}
return key_address_string;
case Device::ConfigKeyAddressType::LE_LEGACY_PSEUDO_ADDRESS:
for (const auto& section_and_property : config->GetSectionNamesWithProperty(kLeLegacyPseudoAddr)) {
if (section_and_property.property == key_address_string) {
return section_and_property.section;
}
}
// One cannot create a new device just using LE legacy pseudo address
[[fallthrough]];
default:
LOG_ALWAYS_FATAL("Unknown key_address_type %d", static_cast<int>(key_address_type));
return "";
}
}
} // namespace
const std::unordered_set<std::string_view> Device::kLinkKeyProperties = {
"LinkKey", "LE_KEY_PENC", "LE_KEY_PID", "LE_KEY_PCSRK", "LE_KEY_LENC", "LE_KEY_LCSRK"};
Device::Device(
ConfigCache* config,
ConfigCache* memory_only_config,
const hci::Address& key_address,
ConfigKeyAddressType key_address_type)
: Device(config, memory_only_config, GetConfigSection(config, key_address, key_address_type)) {}
Device::Device(ConfigCache* config, ConfigCache* memory_only_config, std::string section)
: config_(config), memory_only_config_(memory_only_config), section_(std::move(section)) {}
bool Device::Exists() {
return config_->HasSection(section_);
}
MutationEntry Device::RemoveFromConfig() {
return MutationEntry::Remove(MutationEntry::PropertyType::NORMAL, section_);
}
MutationEntry Device::RemoveFromTempConfig() {
return MutationEntry::Remove(MutationEntry::PropertyType::MEMORY_ONLY, section_);
}
LeDevice Device::Le() {
auto device_type = GetDeviceType();
ASSERT(device_type);
ASSERT(device_type == DeviceType::LE || device_type == DeviceType::DUAL);
return LeDevice(config_, memory_only_config_, section_);
}
ClassicDevice Device::Classic() {
auto device_type = GetDeviceType();
ASSERT(device_type);
ASSERT(device_type == DeviceType::BR_EDR || device_type == DeviceType::DUAL);
return ClassicDevice(config_, memory_only_config_, section_);
}
hci::Address Device::GetAddress() const {
// section name of a device is its address
auto addr = hci::Address::FromString(section_);
ASSERT(addr.has_value());
return addr.value();
}
std::string Device::ToLogString() const {
return section_;
}
} // namespace storage
} // namespace bluetooth
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