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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/common/features/complex_feature.h"
#include "extensions/common/mojom/context_type.mojom.h"
namespace extensions {
ComplexFeature::ComplexFeature(std::vector<Feature*>* features) {
DCHECK_GT(features->size(), 1UL);
for (Feature* f : *features) {
features_.push_back(std::unique_ptr<Feature>(f));
requires_delegated_availability_check_ |=
f->RequiresDelegatedAvailabilityCheck();
}
features->clear();
no_parent_ = features_[0]->no_parent();
#if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
// Verify IsInternal and no_parent are consistent across all features.
bool first_is_internal = features_[0]->IsInternal();
for (FeatureList::const_iterator it = features_.begin() + 1;
it != features_.end();
++it) {
DCHECK(first_is_internal == (*it)->IsInternal())
<< "Complex feature must have consistent values of "
"internal across all sub features.";
DCHECK(no_parent_ == (*it)->no_parent())
<< "Complex feature must have consistent values of "
"no_parent across all sub features.";
}
#endif
}
ComplexFeature::~ComplexFeature() = default;
Feature::Availability ComplexFeature::IsAvailableToManifest(
const HashedExtensionId& hashed_id,
Manifest::Type type,
mojom::ManifestLocation location,
int manifest_version,
Platform platform,
int context_id) const {
Feature::Availability first_availability =
features_[0]->IsAvailableToManifest(
hashed_id, type, location, manifest_version, platform, context_id);
if (first_availability.is_available())
return first_availability;
for (auto it = features_.cbegin() + 1; it != features_.cend(); ++it) {
Availability availability = (*it)->IsAvailableToManifest(
hashed_id, type, location, manifest_version, platform, context_id);
if (availability.is_available())
return availability;
}
// If none of the SimpleFeatures are available, we return the availability
// info of the first SimpleFeature that was not available.
return first_availability;
}
Feature::Availability ComplexFeature::IsAvailableToContextImpl(
const Extension* extension,
mojom::ContextType context,
const GURL& url,
Platform platform,
int context_id,
bool check_developer_mode,
const ContextData& context_data) const {
Feature::Availability first_availability =
features_[0]->IsAvailableToContextImpl(extension, context, url, platform,
context_id, check_developer_mode,
context_data);
if (first_availability.is_available())
return first_availability;
for (auto it = features_.cbegin() + 1; it != features_.cend(); ++it) {
Availability availability = (*it)->IsAvailableToContextImpl(
extension, context, url, platform, context_id, check_developer_mode,
context_data);
if (availability.is_available())
return availability;
}
// If none of the SimpleFeatures are available, we return the availability
// info of the first SimpleFeature that was not available.
return first_availability;
}
Feature::Availability ComplexFeature::IsAvailableToEnvironment(
int context_id) const {
Feature::Availability first_availability =
features_[0]->IsAvailableToEnvironment(context_id);
if (first_availability.is_available())
return first_availability;
for (auto iter = features_.cbegin() + 1; iter != features_.cend(); ++iter) {
Availability availability = (*iter)->IsAvailableToEnvironment(context_id);
if (availability.is_available())
return availability;
}
// If none of the SimpleFeatures are available, we return the availability
// info of the first SimpleFeature that was not available.
return first_availability;
}
bool ComplexFeature::IsIdInBlocklist(const HashedExtensionId& hashed_id) const {
for (auto it = features_.cbegin(); it != features_.cend(); ++it) {
if ((*it)->IsIdInBlocklist(hashed_id))
return true;
}
return false;
}
bool ComplexFeature::IsIdInAllowlist(const HashedExtensionId& hashed_id) const {
for (auto it = features_.cbegin(); it != features_.cend(); ++it) {
if ((*it)->IsIdInAllowlist(hashed_id))
return true;
}
return false;
}
bool ComplexFeature::IsInternal() const {
// Constructor verifies that composed features are consistent, thus we can
// return just the first feature's value.
return features_[0]->IsInternal();
}
bool ComplexFeature::RequiresDelegatedAvailabilityCheck() const {
return requires_delegated_availability_check_;
}
void ComplexFeature::SetDelegatedAvailabilityCheckHandler(
DelegatedAvailabilityCheckHandler handler) {
DCHECK(RequiresDelegatedAvailabilityCheck());
DCHECK(!HasDelegatedAvailabilityCheckHandler());
// Set the given handler on all of the sub-feature that need a delegated
// availability check handler and set
// |has_delegated_availability_check_handler_| to true.
for (auto& feature : features_) {
if (feature->RequiresDelegatedAvailabilityCheck()) {
feature->SetDelegatedAvailabilityCheckHandler(handler);
}
}
has_delegated_availability_check_handler_ = true;
}
bool ComplexFeature::HasDelegatedAvailabilityCheckHandler() const {
return has_delegated_availability_check_handler_;
}
} // namespace extensions
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