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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/policy/policy.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/platform/feature_policy/feature_policy.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/text/string_utf8_adaptor.h"
namespace blink {
bool Policy::allowsFeature(const String& feature) const {
if (GetDefaultFeatureNameMap().Contains(feature)) {
return GetPolicy()->IsFeatureEnabled(
GetDefaultFeatureNameMap().at(feature));
}
AddWarningForUnrecognizedFeature(feature);
return false;
}
bool Policy::allowsFeature(const String& feature, const String& url) const {
scoped_refptr<const SecurityOrigin> origin =
SecurityOrigin::CreateFromString(url);
if (!origin || origin->IsOpaque()) {
GetDocument()->AddConsoleMessage(ConsoleMessage::Create(
kOtherMessageSource, kWarningMessageLevel,
"Invalid origin url for feature '" + feature + "': " + url + "."));
return false;
}
if (!GetDefaultFeatureNameMap().Contains(feature)) {
AddWarningForUnrecognizedFeature(feature);
return false;
}
return GetPolicy()->IsFeatureEnabledForOrigin(
GetDefaultFeatureNameMap().at(feature), origin->ToUrlOrigin());
}
Vector<String> Policy::allowedFeatures() const {
Vector<String> allowed_features;
for (const auto& entry : GetDefaultFeatureNameMap()) {
if (GetPolicy()->IsFeatureEnabled(entry.value))
allowed_features.push_back(entry.key);
}
return allowed_features;
}
Vector<String> Policy::getAllowlistForFeature(const String& feature) const {
if (GetDefaultFeatureNameMap().Contains(feature)) {
const FeaturePolicy::Allowlist allowlist =
GetPolicy()->GetAllowlistForFeature(
GetDefaultFeatureNameMap().at(feature));
if (allowlist.MatchesAll())
return Vector<String>({"*"});
Vector<String> result;
for (const auto& origin : allowlist.Origins()) {
result.push_back(WTF::String::FromUTF8(origin.Serialize().c_str()));
}
return result;
}
AddWarningForUnrecognizedFeature(feature);
return Vector<String>();
}
void Policy::AddWarningForUnrecognizedFeature(const String& feature) const {
GetDocument()->AddConsoleMessage(
ConsoleMessage::Create(kOtherMessageSource, kWarningMessageLevel,
"Unrecognized feature: '" + feature + "'."));
}
void Policy::Trace(blink::Visitor* visitor) {
ScriptWrappable::Trace(visitor);
}
void Policy::UpdateContainerPolicy(
const ParsedFeaturePolicy& container_policy,
scoped_refptr<const SecurityOrigin> src_origin) {}
} // namespace blink
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