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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_HID_HID_POLICY_ALLOWED_DEVICES_H_
#define CHROME_BROWSER_HID_HID_POLICY_ALLOWED_DEVICES_H_
#include <map>
#include <set>
#include <string>
#include "components/keyed_service/core/keyed_service.h"
#include "components/prefs/pref_change_registrar.h"
#include "url/origin.h"
namespace device::mojom {
class HidDeviceInfo;
} // namespace device::mojom
class PrefRegistrySimple;
class PrefService;
// This class is used to maintain and interpret the
// WebHidAllowAllDevicesForUrls, WebHidAllowDevicesForUrls,
// DeviceLoginScreenWebHidAllowDevicesForUrls, and
// WebHidAllowDevicesWithHidUsagesForUrls policies.
//
// A PrefChangeRegistrar is used to observe changes to the preference values so
// that the policy can be updated in real-time.
class HidPolicyAllowedDevices : public KeyedService {
public:
using OriginSet = std::set<url::Origin>;
using VendorPolicyMap = std::map<uint16_t, OriginSet>;
using DevicePolicyMap = std::map<std::pair<uint16_t, uint16_t>, OriginSet>;
using UsagePagePolicyMap = std::map<uint16_t, OriginSet>;
using UsagePolicyMap = std::map<std::pair<uint16_t, uint16_t>, OriginSet>;
explicit HidPolicyAllowedDevices(PrefService* pref_service,
bool on_login_screen);
HidPolicyAllowedDevices(const HidPolicyAllowedDevices&) = delete;
HidPolicyAllowedDevices& operator=(const HidPolicyAllowedDevices&) = delete;
~HidPolicyAllowedDevices() override;
static void RegisterLocalStatePrefs(PrefRegistrySimple* registry);
const VendorPolicyMap& vendor_policy() const { return vendor_policy_; }
const DevicePolicyMap& device_policy() const { return device_policy_; }
const UsagePagePolicyMap& usage_page_policy() const {
return usage_page_policy_;
}
const UsagePolicyMap& usage_policy() const { return usage_policy_; }
const OriginSet& all_devices_policy() const { return all_devices_policy_; }
// Checks if |origin| is allowed to use |device|.
bool HasDevicePermission(const url::Origin& origin,
const device::mojom::HidDeviceInfo& device);
private:
void LoadAllowAllDevicesForUrlsPolicy();
void LoadAllowDevicesForUrlsPolicy();
void LoadAllowDevicesWithHidUsagesForUrlsPolicy();
// Stores the name of a pref that should be used by the class. It can either
// be the login screen or the in-session pref.
const std::string allow_devices_for_urls_pref_name_;
PrefChangeRegistrar pref_change_registrar_;
// Stores the current policy configuration for origins allowed to access any
// connected device.
OriginSet all_devices_policy_;
// Stores the current policy configuration for origins allowed to access
// specific devices identified by vendor and product IDs (device_policy_) or
// all devices from a particular vendor ID (vendor_policy_).
DevicePolicyMap device_policy_;
VendorPolicyMap vendor_policy_;
// Stores the current policy configuration for origins allowed to access
// devices containing top-level collections with specific HID usages
// (usage_policy_) or any usage from a particular usage page
// (usage_page_policy_).
UsagePolicyMap usage_policy_;
UsagePagePolicyMap usage_page_policy_;
};
#endif // CHROME_BROWSER_HID_HID_POLICY_ALLOWED_DEVICES_H_
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