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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/proximity_auth/ble/bluetooth_low_energy_device_whitelist.h"
#include <vector>
#include "base/macros.h"
#include "base/values.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "components/proximity_auth/ble/pref_names.h"
#include "components/proximity_auth/logging/logging.h"
namespace proximity_auth {
BluetoothLowEnergyDeviceWhitelist::BluetoothLowEnergyDeviceWhitelist(
PrefService* pref_service)
: pref_service_(pref_service) {
}
BluetoothLowEnergyDeviceWhitelist::~BluetoothLowEnergyDeviceWhitelist() {
}
// static
void BluetoothLowEnergyDeviceWhitelist::RegisterPrefs(
PrefRegistrySimple* registry) {
registry->RegisterDictionaryPref(prefs::kBluetoothLowEnergyDeviceWhitelist);
}
bool BluetoothLowEnergyDeviceWhitelist::HasDeviceWithAddress(
const std::string& bluetooth_address) const {
return pref_service_->GetDictionary(prefs::kBluetoothLowEnergyDeviceWhitelist)
->HasKey(bluetooth_address);
}
bool BluetoothLowEnergyDeviceWhitelist::HasDeviceWithPublicKey(
const std::string& public_key) const {
return !GetDeviceAddress(public_key).empty();
}
std::string BluetoothLowEnergyDeviceWhitelist::GetDevicePublicKey(
const std::string& bluetooth_address) const {
std::string public_key;
GetWhitelistPrefs()->GetStringWithoutPathExpansion(bluetooth_address,
&public_key);
return public_key;
}
std::string BluetoothLowEnergyDeviceWhitelist::GetDeviceAddress(
const std::string& public_key) const {
const base::DictionaryValue* device_whitelist = GetWhitelistPrefs();
for (base::DictionaryValue::Iterator it(*device_whitelist); !it.IsAtEnd();
it.Advance()) {
std::string value_string;
DCHECK(it.value().IsType(base::Value::Type::STRING));
if (it.value().GetAsString(&value_string) && value_string == public_key)
return it.key();
}
return std::string();
}
std::vector<std::string> BluetoothLowEnergyDeviceWhitelist::GetPublicKeys()
const {
std::vector<std::string> public_keys;
const base::DictionaryValue* device_whitelist = GetWhitelistPrefs();
for (base::DictionaryValue::Iterator it(*device_whitelist); !it.IsAtEnd();
it.Advance()) {
std::string value_string;
DCHECK(it.value().IsType(base::Value::Type::STRING));
it.value().GetAsString(&value_string);
public_keys.push_back(value_string);
}
return public_keys;
}
void BluetoothLowEnergyDeviceWhitelist::AddOrUpdateDevice(
const std::string& bluetooth_address,
const std::string& public_key) {
if (HasDeviceWithPublicKey(public_key) &&
GetDeviceAddress(public_key) != bluetooth_address) {
PA_LOG(WARNING) << "Two devices with different bluetooth address, but the "
"same public key were added: " << public_key;
RemoveDeviceWithPublicKey(public_key);
}
DictionaryPrefUpdate device_whitelist_update(
pref_service_, prefs::kBluetoothLowEnergyDeviceWhitelist);
device_whitelist_update->SetStringWithoutPathExpansion(bluetooth_address,
public_key);
}
bool BluetoothLowEnergyDeviceWhitelist::RemoveDeviceWithAddress(
const std::string& bluetooth_address) {
DictionaryPrefUpdate device_whitelist_update(
pref_service_, prefs::kBluetoothLowEnergyDeviceWhitelist);
return device_whitelist_update->RemoveWithoutPathExpansion(bluetooth_address,
nullptr);
}
bool BluetoothLowEnergyDeviceWhitelist::RemoveDeviceWithPublicKey(
const std::string& public_key) {
return RemoveDeviceWithAddress(GetDeviceAddress(public_key));
}
const base::DictionaryValue*
BluetoothLowEnergyDeviceWhitelist::GetWhitelistPrefs() const {
return pref_service_->GetDictionary(
prefs::kBluetoothLowEnergyDeviceWhitelist);
}
} // namespace proximity_auth
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