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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/public/common/navigation/navigation_policy.h"
#include "base/command_line.h"
#include "base/metrics/histogram_macros.h"
#include "base/system/sys_info.h"
#include "services/network/public/cpp/features.h"
#include "third_party/blink/public/common/features.h"
namespace blink {
NavigationDownloadPolicy::NavigationDownloadPolicy() = default;
NavigationDownloadPolicy::~NavigationDownloadPolicy() = default;
NavigationDownloadPolicy::NavigationDownloadPolicy(
const NavigationDownloadPolicy&) = default;
void NavigationDownloadPolicy::SetAllowed(NavigationDownloadType type) {
observed_types.set(static_cast<size_t>(type));
}
void NavigationDownloadPolicy::SetDisallowed(NavigationDownloadType type) {
observed_types.set(static_cast<size_t>(type));
disallowed_types.set(static_cast<size_t>(type));
}
bool NavigationDownloadPolicy::IsType(NavigationDownloadType type) const {
return observed_types.test(static_cast<size_t>(type));
}
ResourceInterceptPolicy NavigationDownloadPolicy::GetResourceInterceptPolicy()
const {
if (disallowed_types.test(
static_cast<size_t>(NavigationDownloadType::kSandbox)) ||
disallowed_types.test(
static_cast<size_t>(NavigationDownloadType::kOpenerCrossOrigin)) ||
disallowed_types.test(
static_cast<size_t>(NavigationDownloadType::kAdFrame)) ||
disallowed_types.test(
static_cast<size_t>(NavigationDownloadType::kAdFrameNoGesture))) {
return ResourceInterceptPolicy::kAllowPluginOnly;
}
return disallowed_types.any() ? ResourceInterceptPolicy::kAllowNone
: ResourceInterceptPolicy::kAllowAll;
}
bool NavigationDownloadPolicy::IsDownloadAllowed() const {
return disallowed_types.none();
}
void NavigationDownloadPolicy::ApplyDownloadFramePolicy(
bool is_opener_navigation,
bool has_gesture,
bool openee_can_access_opener_origin,
bool has_download_sandbox_flag,
bool from_ad) {
if (!has_gesture)
SetAllowed(NavigationDownloadType::kNoGesture);
// Disallow downloads on an opener if the requestor is cross origin.
// See crbug.com/632514.
if (is_opener_navigation && !openee_can_access_opener_origin) {
SetDisallowed(NavigationDownloadType::kOpenerCrossOrigin);
}
if (has_download_sandbox_flag) {
SetDisallowed(NavigationDownloadType::kSandbox);
}
if (from_ad) {
SetAllowed(NavigationDownloadType::kAdFrame);
if (!has_gesture) {
SetDisallowed(NavigationDownloadType::kAdFrameNoGesture);
}
}
}
blink::mojom::NavigationInitiatorActivationAndAdStatus
GetNavigationInitiatorActivationAndAdStatus(bool has_user_activation,
bool initiator_frame_is_ad,
bool is_ad_script_in_stack) {
return has_user_activation
? ((initiator_frame_is_ad || is_ad_script_in_stack)
? blink::mojom::NavigationInitiatorActivationAndAdStatus::
kStartedWithTransientActivationFromAd
: blink::mojom::NavigationInitiatorActivationAndAdStatus::
kStartedWithTransientActivationFromNonAd)
: blink::mojom::NavigationInitiatorActivationAndAdStatus::
kDidNotStartWithTransientActivation;
}
} // namespace blink
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