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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.
#include "chrome/browser/first_party_sets/first_party_sets_navigation_throttle.h"
#include <memory>
#include <utility>
#include "base/functional/bind.h"
#include "base/metrics/histogram_functions.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "chrome/browser/first_party_sets/first_party_sets_policy_service.h"
#include "chrome/browser/first_party_sets/first_party_sets_policy_service_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_contents.h"
#include "net/base/features.h"
namespace first_party_sets {
namespace {
using ThrottleCheckResult = content::NavigationThrottle::ThrottleCheckResult;
void RecordResumeOnTimeout(bool is_timeout) {
base::UmaHistogramBoolean("FirstPartySets.NavigationThrottle.ResumeOnTimeout",
is_timeout);
}
} // namespace
FirstPartySetsNavigationThrottle::FirstPartySetsNavigationThrottle(
content::NavigationThrottleRegistry& registry,
FirstPartySetsPolicyService& service)
: content::NavigationThrottle(registry), service_(service) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
FirstPartySetsNavigationThrottle::~FirstPartySetsNavigationThrottle() = default;
ThrottleCheckResult FirstPartySetsNavigationThrottle::WillStartRequest() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (service_->is_enabled() && !service_->is_ready()) {
service_->RegisterThrottleResumeCallback(
base::BindOnce(&FirstPartySetsNavigationThrottle::OnReadyToResume,
weak_factory_.GetWeakPtr()));
// Setup timer
resume_navigation_timer_.Start(
FROM_HERE,
net::features::kWaitForFirstPartySetsInitNavigationThrottleTimeout
.Get(),
base::BindOnce(&FirstPartySetsNavigationThrottle::OnTimeOut,
weak_factory_.GetWeakPtr()));
CHECK(!throttle_navigation_timer_.has_value());
throttle_navigation_timer_ = {base::ElapsedTimer()};
return content::NavigationThrottle::DEFER;
}
return content::NavigationThrottle::PROCEED;
}
const char* FirstPartySetsNavigationThrottle::GetNameForLogging() {
return "FirstPartySetsNavigationThrottle";
}
// static
void FirstPartySetsNavigationThrottle::MaybeCreateAndAdd(
content::NavigationThrottleRegistry& registry) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
content::NavigationHandle& navigation_handle = registry.GetNavigationHandle();
Profile* profile = Profile::FromBrowserContext(
navigation_handle.GetWebContents()->GetBrowserContext());
// The `service` might be null for some irregular profiles.
// TODO(crbug.com/40233408): regular profiles and guest sessions
// aren't mutually exclusive on ChromeOS.
if (!profile->IsRegularProfile() || profile->IsGuestSession()) {
return;
}
FirstPartySetsPolicyService* service =
FirstPartySetsPolicyServiceFactory::GetForBrowserContext(profile);
CHECK(service);
if (service->is_ready() ||
!base::FeatureList::IsEnabled(
net::features::kWaitForFirstPartySetsInit) ||
net::features::kWaitForFirstPartySetsInitNavigationThrottleTimeout.Get()
.is_zero() ||
navigation_handle.GetParentFrameOrOuterDocument()) {
return;
}
registry.AddThrottle(
std::make_unique<FirstPartySetsNavigationThrottle>(registry, *service));
}
void FirstPartySetsNavigationThrottle::OnTimeOut() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!resume_navigation_timer_.IsRunning());
RecordResumeOnTimeout(true);
Resume();
}
void FirstPartySetsNavigationThrottle::OnReadyToResume() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// If the timer is not running, that means the timeout has occurred and the
// navigation has been resumed by `OnTimeOut`, so we don't need to resume
// again.
if (!resume_navigation_timer_.IsRunning()) {
CHECK(resumed_);
return;
}
// Stop the timer to make sure we won't try to resume again due to hitting
// the timeout.
resume_navigation_timer_.Stop();
RecordResumeOnTimeout(false);
Resume();
}
void FirstPartySetsNavigationThrottle::Resume() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!resumed_);
resumed_ = true;
CHECK(throttle_navigation_timer_.has_value());
base::UmaHistogramTimes("FirstPartySets.NavigationThrottle.ResumeDelta",
throttle_navigation_timer_->Elapsed());
NavigationThrottle::Resume();
}
} // namespace first_party_sets
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