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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/media_device_salt/media_device_id_salt.h"
#include "base/base64.h"
#include "base/rand_util.h"
#include "base/system/system_monitor.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/media_device_id.h"
using content::BrowserThread;
namespace media_device_salt {
namespace prefs {
const char kMediaDeviceIdSalt[] = "media.device_id_salt";
}
MediaDeviceIDSalt::MediaDeviceIDSalt(PrefService* pref_service) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
media_device_id_salt_.Init(prefs::kMediaDeviceIdSalt, pref_service);
if (media_device_id_salt_.GetValue().empty()) {
media_device_id_salt_.SetValue(base::UnguessableToken::Create().ToString());
}
}
MediaDeviceIDSalt::~MediaDeviceIDSalt() = default;
std::string MediaDeviceIDSalt::GetSalt() const {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return media_device_id_salt_.GetValue();
}
void MediaDeviceIDSalt::RegisterProfilePrefs(
user_prefs::PrefRegistrySyncable* registry) {
registry->RegisterStringPref(prefs::kMediaDeviceIdSalt, std::string());
}
void MediaDeviceIDSalt::Reset(PrefService* pref_service) {
pref_service->SetString(prefs::kMediaDeviceIdSalt,
base::UnguessableToken::Create().ToString());
}
} // namespace media_device_salt
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