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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/browser/extensions/data_deleter.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_special_storage_policy.h"
#include "chrome/browser/extensions/extension_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/extensions/manifest_handlers/app_isolation_info.h"
#include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/storage_partition.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "net/url_request/url_request_context_getter.h"
#if defined(ENABLE_EXTENSIONS)
#include "extensions/browser/api/storage/storage_frontend.h"
#endif
using base::WeakPtr;
using content::BrowserContext;
using content::BrowserThread;
using content::StoragePartition;
namespace extensions {
namespace {
// Helper function that deletes data of a given |storage_origin| in a given
// |partition|.
void DeleteOrigin(Profile* profile,
StoragePartition* partition,
const GURL& origin) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(profile);
DCHECK(partition);
if (origin.SchemeIs(kExtensionScheme)) {
// TODO(ajwong): Cookies are not properly isolated for
// chrome-extension:// scheme. (http://crbug.com/158386).
//
// However, no isolated apps actually can write to kExtensionScheme
// origins. Thus, it is benign to delete from the
// RequestContextForExtensions because there's nothing stored there. We
// preserve this code path without checking for isolation because it's
// simpler than special casing. This code should go away once we merge
// the various URLRequestContexts (http://crbug.com/159193).
partition->ClearDataForOrigin(
StoragePartition::REMOVE_DATA_MASK_ALL &
(~StoragePartition::REMOVE_DATA_MASK_SHADER_CACHE),
StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL,
origin,
profile->GetRequestContextForExtensions());
} else {
// We don't need to worry about the media request context because that
// shares the same cookie store as the main request context.
partition->ClearDataForOrigin(
StoragePartition::REMOVE_DATA_MASK_ALL &
(~StoragePartition::REMOVE_DATA_MASK_SHADER_CACHE),
StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL,
origin,
partition->GetURLRequestContext());
}
}
void OnNeedsToGarbageCollectIsolatedStorage(WeakPtr<ExtensionService> es) {
if (!es)
return;
ExtensionPrefs::Get(es->profile())->SetNeedsStorageGarbageCollection(true);
}
} // namespace
// static
void DataDeleter::StartDeleting(Profile* profile, const Extension* extension) {
DCHECK(profile);
DCHECK(extension);
if (AppIsolationInfo::HasIsolatedStorage(extension)) {
BrowserContext::AsyncObliterateStoragePartition(
profile,
util::GetSiteForExtensionId(extension->id(), profile),
base::Bind(
&OnNeedsToGarbageCollectIsolatedStorage,
ExtensionSystem::Get(profile)->extension_service()->AsWeakPtr()));
} else {
GURL launch_web_url_origin(
AppLaunchInfo::GetLaunchWebURL(extension).GetOrigin());
StoragePartition* partition = BrowserContext::GetStoragePartitionForSite(
profile,
Extension::GetBaseURLFromExtensionId(extension->id()));
if (extension->is_hosted_app() &&
!profile->GetExtensionSpecialStoragePolicy()->
IsStorageProtected(launch_web_url_origin)) {
DeleteOrigin(profile, partition, launch_web_url_origin);
}
DeleteOrigin(profile, partition, extension->url());
}
#if defined(ENABLE_EXTENSIONS)
// Begin removal of the settings for the current extension.
// StorageFrontend may not exist in unit tests.
StorageFrontend* frontend = StorageFrontend::Get(profile);
if (frontend)
frontend->DeleteStorageSoon(extension->id());
#endif // defined(ENABLE_EXTENSIONS)
}
} // namespace extensions
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