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// Copyright (c) 2012 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 "chrome/common/extensions/manifest.h"
#include "base/basictypes.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/string_split.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/extensions/extension_error_utils.h"
#include "chrome/common/extensions/manifest_feature_provider.h"
namespace errors = extension_manifest_errors;
namespace keys = extension_manifest_keys;
namespace extensions {
Manifest::Manifest(Extension::Location location,
scoped_ptr<DictionaryValue> value)
: location_(location), value_(value.Pass()) {
}
Manifest::~Manifest() {
}
bool Manifest::ValidateManifest(string16* error) const {
for (DictionaryValue::key_iterator key = value_->begin_keys();
key != value_->end_keys(); ++key) {
scoped_ptr<Feature> feature =
ManifestFeatureProvider::GetDefaultInstance()->GetFeature(*key);
if (!feature.get()) {
// When validating the extension manifests, we ignore keys that are not
// recognized for forward compatibility.
// TODO(aa): Consider having an error here in the case of strict error
// checking to let developers know when they screw up.
continue;
}
Feature::Availability result = feature->IsAvailable(
extension_id_, GetType(), Feature::ConvertLocation(location_),
GetManifestVersion());
if (result != Feature::IS_AVAILABLE) {
*error = ExtensionErrorUtils::FormatErrorMessageUTF16(
errors::kFeatureNotAllowed,
*key,
feature->GetErrorMessage(result));
return false;
}
}
return true;
}
bool Manifest::HasKey(const std::string& key) const {
return CanAccessKey(key) && value_->HasKey(key);
}
bool Manifest::Get(
const std::string& path, Value** out_value) const {
return CanAccessPath(path) && value_->Get(path, out_value);
}
bool Manifest::GetBoolean(
const std::string& path, bool* out_value) const {
return CanAccessPath(path) && value_->GetBoolean(path, out_value);
}
bool Manifest::GetInteger(
const std::string& path, int* out_value) const {
return CanAccessPath(path) && value_->GetInteger(path, out_value);
}
bool Manifest::GetString(
const std::string& path, std::string* out_value) const {
return CanAccessPath(path) && value_->GetString(path, out_value);
}
bool Manifest::GetString(
const std::string& path, string16* out_value) const {
return CanAccessPath(path) && value_->GetString(path, out_value);
}
bool Manifest::GetDictionary(
const std::string& path, DictionaryValue** out_value) const {
return CanAccessPath(path) && value_->GetDictionary(path, out_value);
}
bool Manifest::GetList(
const std::string& path, ListValue** out_value) const {
return CanAccessPath(path) && value_->GetList(path, out_value);
}
Manifest* Manifest::DeepCopy() const {
Manifest* manifest = new Manifest(
location_, scoped_ptr<DictionaryValue>(value_->DeepCopy()));
manifest->set_extension_id(extension_id_);
return manifest;
}
bool Manifest::Equals(const Manifest* other) const {
return other && value_->Equals(other->value());
}
int Manifest::GetManifestVersion() const {
int manifest_version = 1; // default to version 1 if no version is specified
value_->GetInteger(keys::kManifestVersion, &manifest_version);
return manifest_version;
}
Extension::Type Manifest::GetType() const {
if (value_->HasKey(keys::kTheme))
return Extension::TYPE_THEME;
bool is_platform_app = false;
if (value_->GetBoolean(keys::kPlatformApp, &is_platform_app) &&
is_platform_app)
return Extension::TYPE_PLATFORM_APP;
if (value_->HasKey(keys::kApp)) {
if (value_->Get(keys::kWebURLs, NULL) ||
value_->Get(keys::kLaunchWebURL, NULL))
return Extension::TYPE_HOSTED_APP;
else
return Extension::TYPE_PACKAGED_APP;
} else {
return Extension::TYPE_EXTENSION;
}
}
bool Manifest::IsTheme() const {
return GetType() == Extension::TYPE_THEME;
}
bool Manifest::IsPlatformApp() const {
return GetType() == Extension::TYPE_PLATFORM_APP;
}
bool Manifest::IsPackagedApp() const {
return GetType() == Extension::TYPE_PACKAGED_APP;
}
bool Manifest::IsHostedApp() const {
return GetType() == Extension::TYPE_HOSTED_APP;
}
bool Manifest::CanAccessPath(const std::string& path) const {
std::vector<std::string> components;
base::SplitString(path, '.', &components);
return CanAccessKey(components[0]);
}
bool Manifest::CanAccessKey(const std::string& key) const {
scoped_ptr<Feature> feature =
ManifestFeatureProvider::GetDefaultInstance()->GetFeature(key);
if (!feature.get())
return false;
return Feature::IS_AVAILABLE == feature->IsAvailable(
extension_id_, GetType(), Feature::ConvertLocation(location_),
GetManifestVersion());
}
} // namespace extensions
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