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// Copyright 2017 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/blocked_content/popup_tracker.h"
#include <algorithm>
#include "base/check.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/histogram_macros.h"
#include "base/time/default_tick_clock.h"
#include "components/blocked_content/popup_opener_tab_helper.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_contents.h"
#include "services/metrics/public/cpp/metrics_utils.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
namespace blocked_content {
namespace {
int CappedUserInteractions(int user_interactions, int max_interactions) {
return std::min(user_interactions, max_interactions);
}
} // namespace
PopupTracker* PopupTracker::CreateForWebContents(
content::WebContents* contents,
content::WebContents* opener,
WindowOpenDisposition disposition) {
DCHECK(contents);
DCHECK(opener);
auto* tracker = FromWebContents(contents);
if (!tracker) {
tracker = new PopupTracker(contents, opener, disposition);
contents->SetUserData(UserDataKey(), base::WrapUnique(tracker));
}
return tracker;
}
PopupTracker::~PopupTracker() = default;
PopupTracker::PopupTracker(content::WebContents* contents,
content::WebContents* opener,
WindowOpenDisposition disposition)
: content::WebContentsObserver(contents),
content::WebContentsUserData<PopupTracker>(*contents),
visibility_tracker_(
base::DefaultTickClock::GetInstance(),
contents->GetVisibility() != content::Visibility::HIDDEN),
opener_source_id_(opener->GetPrimaryMainFrame()->GetPageUkmSourceId()),
window_open_disposition_(disposition) {
if (auto* popup_opener = PopupOpenerTabHelper::FromWebContents(opener))
popup_opener->OnOpenedPopup(this);
// A popup tracker may be constructed before `contents` has been added to its
// owning tab strip, and as such tab helpers for `contents` may not yet have
// been initialized. Explicitly instantiate SubresourceFilterObserverManager
// if necessary for `contents` if necessary to ensure the popup registers the
// observation.
subresource_filter::SubresourceFilterObserverManager::CreateForWebContents(
contents);
scoped_observation_.Observe(
subresource_filter::SubresourceFilterObserverManager::FromWebContents(
contents));
}
void PopupTracker::WebContentsDestroyed() {
base::TimeDelta total_foreground_duration =
visibility_tracker_.GetForegroundDuration();
if (opener_source_id_ != ukm::kInvalidSourceId) {
const int kMaxInteractions = 100;
const int kMaxSubcatagoryInteractions = 50;
ukm::builders::Popup_Closed(opener_source_id_)
.SetEngagementTime(ukm::GetExponentialBucketMinForUserTiming(
total_foreground_duration.InMilliseconds()))
.SetUserInitiatedClose(web_contents()->GetClosedByUserGesture())
.SetTrusted(is_trusted_)
.SetSafeBrowsingStatus(static_cast<int>(safe_browsing_status_))
.SetWindowOpenDisposition(static_cast<int>(window_open_disposition_))
.SetNumInteractions(
CappedUserInteractions(num_interactions_, kMaxInteractions))
.SetNumActivationInteractions(CappedUserInteractions(
num_activation_events_, kMaxSubcatagoryInteractions))
.SetNumGestureScrollBeginInteractions(CappedUserInteractions(
num_gesture_scroll_begin_events_, kMaxSubcatagoryInteractions))
.SetRedirectCount(num_redirects_)
.Record(ukm::UkmRecorder::Get());
}
}
void PopupTracker::DidFinishNavigation(
content::NavigationHandle* navigation_handle) {
if (!navigation_handle->HasCommitted() ||
navigation_handle->IsSameDocument() ||
!navigation_handle->IsInPrimaryMainFrame()) {
return;
}
if (!first_navigation_committed_) {
first_navigation_committed_ = true;
// The last page in the redirect chain is the current page, the number of
// redirects is one less than the size of the chain.
num_redirects_ = navigation_handle->GetRedirectChain().size() - 1;
}
if (!first_load_visible_time_start_) {
first_load_visible_time_start_ =
visibility_tracker_.GetForegroundDuration();
} else if (!first_load_visible_time_) {
first_load_visible_time_ = visibility_tracker_.GetForegroundDuration() -
*first_load_visible_time_start_;
}
}
void PopupTracker::OnVisibilityChanged(content::Visibility visibility) {
// TODO(csharrison): Consider handling OCCLUDED tabs the same way as HIDDEN
// tabs.
if (visibility == content::Visibility::HIDDEN)
visibility_tracker_.OnHidden();
else
visibility_tracker_.OnShown();
}
void PopupTracker::DidGetUserInteraction(const blink::WebInputEvent& event) {
// TODO(csharrison): It would be nice if ctrl-W could be filtered out here,
// but the initial ctrl key press is registered as a kRawKeyDown.
num_interactions_++;
if (event.GetType() == blink::WebInputEvent::Type::kGestureScrollBegin) {
num_gesture_scroll_begin_events_++;
} else {
num_activation_events_++;
}
}
// This method will always be called before the DidFinishNavigation associated
// with this handle.
// The exception is a navigation restoring a page from back-forward cache --
// in that case don't issue any requests, therefore we don't get any
// safe browsing callbacks. See the comment above for the mitigation.
void PopupTracker::OnSafeBrowsingChecksComplete(
content::NavigationHandle* navigation_handle,
const subresource_filter::SubresourceFilterSafeBrowsingClient::CheckResult&
result) {
DCHECK(navigation_handle->IsInMainFrame());
if (!navigation_handle->IsInPrimaryMainFrame())
return;
safe_browsing_status_ = PopupSafeBrowsingStatus::kSafe;
if (result.threat_type ==
safe_browsing::SBThreatType::SB_THREAT_TYPE_URL_PHISHING ||
result.threat_type == safe_browsing::SBThreatType::
SB_THREAT_TYPE_URL_CLIENT_SIDE_PHISHING ||
result.threat_type ==
safe_browsing::SBThreatType::SB_THREAT_TYPE_SUBRESOURCE_FILTER) {
safe_browsing_status_ = PopupSafeBrowsingStatus::kUnsafe;
}
}
void PopupTracker::OnSubresourceFilterGoingAway() {
DCHECK(scoped_observation_.IsObserving());
scoped_observation_.Reset();
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(PopupTracker);
} // namespace blocked_content
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