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// Copyright 2013 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 "extensions/common/manifest_handlers/requirements_info.h"
#include <memory>
#include "base/lazy_instance.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/manifest_constants.h"
namespace extensions {
namespace keys = manifest_keys;
namespace errors = manifest_errors;
RequirementsInfo::RequirementsInfo(const Manifest* manifest)
: webgl(false), window_shape(false) {}
RequirementsInfo::~RequirementsInfo() {
}
// static
const RequirementsInfo& RequirementsInfo::GetRequirements(
const Extension* extension) {
RequirementsInfo* info = static_cast<RequirementsInfo*>(
extension->GetManifestData(keys::kRequirements));
// We should be guaranteed to have requirements, since they are parsed for all
// extension types.
CHECK(info);
return *info;
}
RequirementsHandler::RequirementsHandler() {
}
RequirementsHandler::~RequirementsHandler() {
}
base::span<const char* const> RequirementsHandler::Keys() const {
static constexpr const char* kKeys[] = {keys::kRequirements};
#if !defined(__GNUC__) || __GNUC__ > 5
return kKeys;
#else
return base::make_span(kKeys, 1);
#endif
}
bool RequirementsHandler::AlwaysParseForType(Manifest::Type type) const {
return true;
}
bool RequirementsHandler::Parse(Extension* extension, base::string16* error) {
std::unique_ptr<RequirementsInfo> requirements(
new RequirementsInfo(extension->manifest()));
if (!extension->manifest()->HasKey(keys::kRequirements)) {
extension->SetManifestData(keys::kRequirements, std::move(requirements));
return true;
}
const base::Value* requirements_value = nullptr;
if (!extension->manifest()->GetDictionary(keys::kRequirements,
&requirements_value)) {
*error = base::ASCIIToUTF16(errors::kInvalidRequirements);
return false;
}
for (const auto& entry : requirements_value->DictItems()) {
if (!entry.second.is_dict()) {
*error = ErrorUtils::FormatErrorMessageUTF16(errors::kInvalidRequirement,
entry.first);
return false;
}
const base::Value& requirement_value = entry.second;
// The plugins requirement is deprecated. Raise an install warning. If the
// extension explicitly requires npapi plugins, raise an error.
if (entry.first == "plugins") {
extension->AddInstallWarning(
InstallWarning(errors::kPluginsRequirementDeprecated));
const base::Value* npapi_requirement =
requirement_value.FindKeyOfType("npapi", base::Value::Type::BOOLEAN);
if (npapi_requirement != nullptr && npapi_requirement->GetBool()) {
*error = base::ASCIIToUTF16(errors::kNPAPIPluginsNotSupported);
return false;
}
} else if (entry.first == "3D") {
const base::Value* features =
requirement_value.FindKeyOfType("features", base::Value::Type::LIST);
if (features == nullptr) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidRequirement, entry.first);
return false;
}
for (const auto& feature : features->GetList()) {
if (!feature.is_string())
continue;
if (feature.GetString() == "webgl") {
requirements->webgl = true;
} else if (feature.GetString() == "css3d") {
// css3d is always available, so no check is needed, but no error is
// generated.
} else {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidRequirement, entry.first);
return false;
}
}
} else if (entry.first == "window") {
for (const auto& feature : requirement_value.DictItems()) {
if (!feature.second.is_bool()) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidRequirement, entry.first);
return false;
}
if (feature.first == "shape") {
requirements->window_shape = feature.second.GetBool();
} else {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidRequirement, entry.first);
return false;
}
}
} else {
*error = base::ASCIIToUTF16(errors::kInvalidRequirements);
return false;
}
}
extension->SetManifestData(keys::kRequirements, std::move(requirements));
return true;
}
} // namespace extensions
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