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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/initialize_extensions_client.h"
#include <map>
#include <memory>
#include "base/no_destructor.h"
#include "build/build_config.h"
#include "chrome/common/extensions/chrome_extensions_client.h"
#include "chrome/common/extensions/webstore_override.h"
#include "extensions/buildflags/buildflags.h"
#include "extensions/common/extensions_client.h"
#include "extensions/common/features/feature.h"
#include "extensions/common/user_scripts_availability.h"
#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "chrome/common/controlled_frame/controlled_frame.h"
#include "chrome/common/controlled_frame/controlled_frame_api_provider.h"
#endif
#if BUILDFLAG(ENABLE_PLATFORM_APPS)
#include "chrome/common/apps/platform_apps/chrome_apps_api_provider.h"
#endif
#if BUILDFLAG(IS_CHROMEOS)
#include "chrome/common/chromeos/extensions/chromeos_system_extensions_api_provider.h"
#endif
static_assert(BUILDFLAG(ENABLE_EXTENSIONS_CORE));
namespace {
// Helper method to merge all the FeatureDelegatedAvailabilityCheckMaps into a
// single map.
extensions::Feature::FeatureDelegatedAvailabilityCheckMap
CombineAllAvailabilityCheckMaps() {
extensions::Feature::FeatureDelegatedAvailabilityCheckMap map_list[] = {
#if BUILDFLAG(ENABLE_EXTENSIONS)
controlled_frame::CreateAvailabilityCheckMap(),
#endif
extensions::user_scripts_availability::CreateAvailabilityCheckMap(),
extensions::webstore_override::CreateAvailabilityCheckMap(),
};
extensions::Feature::FeatureDelegatedAvailabilityCheckMap result;
for (auto& map : map_list) {
result.merge(map);
// DCHECK that none of the keys were overlapping i.e. the map we merged in
// is empty now. This is done as a DCHECK rather than a CHECK as it is meant
// as a catch for developers adding a new delegated availability check that
// might have overlapping keys with an existing one.
DCHECK(map.empty()) << "Overlapping feature name key in delegated "
"availability check map for: "
<< map.begin()->first;
}
return result;
}
} // namespace
void EnsureExtensionsClientInitialized() {
static bool initialized = false;
static base::NoDestructor<extensions::ChromeExtensionsClient>
extensions_client;
if (!initialized) {
initialized = true;
extensions_client->SetFeatureDelegatedAvailabilityCheckMap(
CombineAllAvailabilityCheckMaps());
#if BUILDFLAG(ENABLE_PLATFORM_APPS)
extensions_client->AddAPIProvider(
std::make_unique<chrome_apps::ChromeAppsAPIProvider>());
#endif
#if BUILDFLAG(ENABLE_EXTENSIONS)
extensions_client->AddAPIProvider(
std::make_unique<controlled_frame::ControlledFrameAPIProvider>());
#endif
#if BUILDFLAG(IS_CHROMEOS)
extensions_client->AddAPIProvider(
std::make_unique<chromeos::ChromeOSSystemExtensionsAPIProvider>());
#endif
extensions::ExtensionsClient::Set(extensions_client.get());
}
// ExtensionsClient::Set() will early-out if the client was already set, so
// this allows us to check that this was the only site setting it.
DCHECK_EQ(extensions_client.get(), extensions::ExtensionsClient::Get())
<< "ExtensionsClient should only be initialized through "
<< "EnsureExtensionsClientInitialized() when using "
<< "ChromeExtensionsClient.";
}
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