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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/bluetooth/bluetooth_allowed_devices.h"
#include <string>
#include <vector>
#include "base/containers/contains.h"
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "content/browser/bluetooth/bluetooth_blocklist.h"
using device::BluetoothUUID;
namespace content {
BluetoothAllowedDevices::BluetoothAllowedDevices() {}
BluetoothAllowedDevices::BluetoothAllowedDevices(
const BluetoothAllowedDevices& other) = default;
BluetoothAllowedDevices::~BluetoothAllowedDevices() {}
const blink::WebBluetoothDeviceId& BluetoothAllowedDevices::AddDevice(
const std::string& device_address,
const blink::mojom::WebBluetoothRequestDeviceOptionsPtr& options) {
auto& device_id = AddDevice(device_address);
AddUnionOfServicesTo(options, &device_id_to_services_map_[device_id]);
AddManufacturerDataTo(options, &device_id_to_manufacturers_map_[device_id]);
// Currently, devices that are added with WebBluetoothRequestDeviceOptionsPtr
// |options| come from RequestDevice() and therefore have the ablity to be
// connected to.
device_id_to_connectable_map_[device_id] = true;
return device_id;
}
const blink::WebBluetoothDeviceId& BluetoothAllowedDevices::AddDevice(
const std::string& device_address) {
DVLOG(1) << "Adding a device to Map of Allowed Devices.";
auto id_iter = device_address_to_id_map_.find(device_address);
if (id_iter != device_address_to_id_map_.end()) {
DVLOG(1) << "Device already in map of allowed devices.";
return device_address_to_id_map_[device_address];
}
const blink::WebBluetoothDeviceId device_id = GenerateUniqueDeviceId();
DVLOG(1) << "Id generated for device: " << device_id;
device_address_to_id_map_[device_address] = device_id;
device_id_to_address_map_[device_id] = device_address;
CHECK(device_id_set_.insert(device_id).second);
return device_address_to_id_map_[device_address];
}
void BluetoothAllowedDevices::RemoveDevice(const std::string& device_address) {
const blink::WebBluetoothDeviceId* device_id_ptr =
GetDeviceId(device_address);
DCHECK(device_id_ptr != nullptr);
// We make a copy because we are going to remove the original value from its
// map.
blink::WebBluetoothDeviceId device_id = *device_id_ptr;
// 1. Remove from all three maps.
CHECK(device_address_to_id_map_.erase(device_address));
CHECK(device_id_to_address_map_.erase(device_id));
CHECK(device_id_to_services_map_.erase(device_id));
// Not all devices are connectable.
device_id_to_connectable_map_.erase(device_id);
// 2. Remove from set of ids.
CHECK(device_id_set_.erase(device_id));
}
const blink::WebBluetoothDeviceId* BluetoothAllowedDevices::GetDeviceId(
const std::string& device_address) {
auto id_iter = device_address_to_id_map_.find(device_address);
if (id_iter == device_address_to_id_map_.end()) {
return nullptr;
}
return &(id_iter->second);
}
const std::string& BluetoothAllowedDevices::GetDeviceAddress(
const blink::WebBluetoothDeviceId& device_id) {
auto id_iter = device_id_to_address_map_.find(device_id);
return id_iter == device_id_to_address_map_.end() ? base::EmptyString()
: id_iter->second;
}
bool BluetoothAllowedDevices::IsAllowedToAccessAtLeastOneService(
const blink::WebBluetoothDeviceId& device_id) const {
auto id_iter = device_id_to_services_map_.find(device_id);
return id_iter == device_id_to_services_map_.end() ? false
: !id_iter->second.empty();
}
bool BluetoothAllowedDevices::IsAllowedToAccessService(
const blink::WebBluetoothDeviceId& device_id,
const BluetoothUUID& service_uuid) const {
if (BluetoothBlocklist::Get().IsExcluded(service_uuid))
return false;
auto id_iter = device_id_to_services_map_.find(device_id);
return id_iter == device_id_to_services_map_.end()
? false
: base::Contains(id_iter->second, service_uuid);
}
bool BluetoothAllowedDevices::IsAllowedToGATTConnect(
const blink::WebBluetoothDeviceId& device_id) const {
auto id_iter = device_id_to_connectable_map_.find(device_id);
if (id_iter == device_id_to_connectable_map_.end())
return false;
return id_iter->second;
}
bool BluetoothAllowedDevices::IsAllowedToAccessManufacturerData(
const blink::WebBluetoothDeviceId& device_id,
const uint16_t manufacturer_code) const {
auto id_iter = device_id_to_manufacturers_map_.find(device_id);
return id_iter == device_id_to_manufacturers_map_.end()
? false
: base::Contains(id_iter->second, manufacturer_code);
}
blink::WebBluetoothDeviceId BluetoothAllowedDevices::GenerateUniqueDeviceId() {
blink::WebBluetoothDeviceId device_id = blink::WebBluetoothDeviceId::Create();
while (base::Contains(device_id_set_, device_id)) {
LOG(WARNING) << "Generated repeated id.";
device_id = blink::WebBluetoothDeviceId::Create();
}
return device_id;
}
void BluetoothAllowedDevices::AddUnionOfServicesTo(
const blink::mojom::WebBluetoothRequestDeviceOptionsPtr& options,
std::unordered_set<BluetoothUUID, device::BluetoothUUIDHash>*
unionOfServices) {
if (options->filters) {
for (const auto& filter : options->filters.value()) {
if (!filter->services)
continue;
for (const BluetoothUUID& uuid : filter->services.value())
unionOfServices->insert(uuid);
}
}
for (const BluetoothUUID& uuid : options->optional_services)
unionOfServices->insert(uuid);
}
void BluetoothAllowedDevices::AddManufacturerDataTo(
const blink::mojom::WebBluetoothRequestDeviceOptionsPtr& options,
base::flat_set<uint16_t>* manufacturer_codes) {
for (const uint16_t manufacturer_code : options->optional_manufacturer_data)
manufacturer_codes->insert(manufacturer_code);
}
} // namespace content
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