content/browser/loader/keep_alive_attribution_request_helper.cc

// Copyright 2024 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/loader/keep_alive_attribution_request_helper.h"

#include <stdint.h>

#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>

#include "base/atomic_sequence_num.h"
#include "base/check.h"
#include "base/feature_list.h"
#include "base/memory/ptr_util.h"
#include "base/memory/weak_ptr.h"
#include "base/unguessable_token.h"
#include "components/attribution_reporting/features.h"
#include "components/attribution_reporting/registration_eligibility.mojom-shared.h"
#include "components/attribution_reporting/suitable_origin.h"
#include "content/browser/attribution_reporting/attribution_background_registrations_id.h"
#include "content/browser/attribution_reporting/attribution_data_host_manager.h"
#include "content/browser/attribution_reporting/attribution_suitable_context.h"
#include "content/public/browser/global_routing_id.h"
#include "net/http/http_response_headers.h"
#include "services/network/public/cpp/attribution_reporting_runtime_features.h"
#include "services/network/public/cpp/trigger_verification.h"
#include "services/network/public/mojom/attribution.mojom-shared.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/tokens/tokens.h"
#include "url/gurl.h"

namespace content {

namespace {

using ::attribution_reporting::mojom::RegistrationEligibility;

}  // namespace

// static
std::unique_ptr<KeepAliveAttributionRequestHelper>
KeepAliveAttributionRequestHelper::CreateIfNeeded(
    network::mojom::AttributionReportingEligibility eligibility,
    const GURL& request_url,
    const std::optional<base::UnguessableToken>& attribution_src_token,
    const std::optional<std::string>& devtools_request_id,
    network::AttributionReportingRuntimeFeatures runtime_features,
    const AttributionSuitableContext& context) {
  if (!base::FeatureList::IsEnabled(
          blink::features::kAttributionReportingInBrowserMigration)) {
    return nullptr;
  }

  RegistrationEligibility registration_eligibility;
  switch (eligibility) {
    case network::mojom::AttributionReportingEligibility::kEmpty:
      return nullptr;
    case network::mojom::AttributionReportingEligibility::kUnset:
    case network::mojom::AttributionReportingEligibility::kTrigger:
      registration_eligibility = RegistrationEligibility::kTrigger;
      break;
    case network::mojom::AttributionReportingEligibility::kEventSource:
    case network::mojom::AttributionReportingEligibility::kNavigationSource:
      registration_eligibility = RegistrationEligibility::kSource;
      break;
    case network::mojom::AttributionReportingEligibility::kEventSourceOrTrigger:
      registration_eligibility = RegistrationEligibility::kSourceOrTrigger;
      break;
  }

  AttributionDataHostManager* data_host_manager = context.data_host_manager();
  if (!data_host_manager) {
    return nullptr;
  }

  std::optional<blink::AttributionSrcToken> token;
  if (attribution_src_token.has_value()) {
    token = blink::AttributionSrcToken(attribution_src_token.value());
  }

  static base::AtomicSequenceNumber unique_id_counter;
  BackgroundRegistrationsId id(unique_id_counter.GetNext());

  data_host_manager->NotifyBackgroundRegistrationStarted(
      id, context.context_origin(), context.is_nested_within_fenced_frame(),
      registration_eligibility,
      /*render_frame_id=*/context.root_render_frame_id(),
      context.last_navigation_id(), std::move(token), devtools_request_id);
  return base::WrapUnique(new KeepAliveAttributionRequestHelper(
      id, data_host_manager,
      /*reporting_url=*/request_url, runtime_features));
}

KeepAliveAttributionRequestHelper::KeepAliveAttributionRequestHelper(
    BackgroundRegistrationsId id,
    AttributionDataHostManager* attribution_data_host_manager,
    const GURL& reporting_url,
    network::AttributionReportingRuntimeFeatures runtime_features)
    : id_(id),
      runtime_features_(runtime_features),
      reporting_url_(reporting_url) {
  CHECK(attribution_data_host_manager);
  attribution_data_host_manager_ = attribution_data_host_manager->AsWeakPtr();
}

void KeepAliveAttributionRequestHelper::OnReceiveRedirect(
    const net::HttpResponseHeaders* headers,
    const std::vector<network::TriggerVerification>& verifications,
    const GURL& redirect_url) {
  if (!attribution_data_host_manager_) {
    return;
  }

  attribution_data_host_manager_->NotifyBackgroundRegistrationData(
      id_, headers, reporting_url_, runtime_features_, verifications);
  reporting_url_ = redirect_url;
}

void KeepAliveAttributionRequestHelper::OnReceiveResponse(
    const net::HttpResponseHeaders* headers,
    const std::vector<network::TriggerVerification>& verifications) {
  if (!attribution_data_host_manager_) {
    return;
  }

  attribution_data_host_manager_->NotifyBackgroundRegistrationData(
      id_, headers, reporting_url_, runtime_features_, verifications);
  attribution_data_host_manager_->NotifyBackgroundRegistrationCompleted(id_);
  attribution_data_host_manager_.reset();
}

KeepAliveAttributionRequestHelper::~KeepAliveAttributionRequestHelper() {
  if (!attribution_data_host_manager_) {
    return;
  }
  attribution_data_host_manager_->NotifyBackgroundRegistrationCompleted(id_);
}

}  // namespace content