chrome/browser/extensions/data_deleter.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/extensions/data_deleter.h"
   6
   7 #include "chrome/browser/extensions/extension_service.h"
   8 #include "chrome/browser/extensions/extension_special_storage_policy.h"
   9 #include "chrome/browser/extensions/extension_util.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
  12 #include "content/public/browser/browser_context.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "content/public/browser/site_instance.h"
  15 #include "content/public/browser/storage_partition.h"
  16 #include "extensions/browser/api/storage/storage_frontend.h"
  17 #include "extensions/browser/extension_prefs.h"
  18 #include "extensions/browser/extension_system.h"
  19 #include "extensions/common/constants.h"
  20 #include "extensions/common/extension.h"
  21 #include "extensions/common/manifest_handlers/app_isolation_info.h"
  22 #include "net/url_request/url_request_context_getter.h"
  23
  24 using base::WeakPtr;
  25 using content::BrowserContext;
  26 using content::BrowserThread;
  27 using content::StoragePartition;
  28
  29 namespace extensions {
  30
  31 namespace {
  32
  33 // Helper function that deletes data of a given |storage_origin| in a given
  34 // |partition|.
  35 void DeleteOrigin(Profile* profile,
  36                   StoragePartition* partition,
  37                   const GURL& origin,
  38                   const base::Closure& callback) {
  39   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  40   DCHECK(profile);
  41   DCHECK(partition);
  42
  43   if (origin.SchemeIs(kExtensionScheme)) {
  44     // TODO(ajwong): Cookies are not properly isolated for
  45     // chrome-extension:// scheme.  (http://crbug.com/158386).
  46     //
  47     // However, no isolated apps actually can write to kExtensionScheme
  48     // origins. Thus, it is benign to delete from the
  49     // RequestContextForExtensions because there's nothing stored there. We
  50     // preserve this code path without checking for isolation because it's
  51     // simpler than special casing.  This code should go away once we merge
  52     // the various URLRequestContexts (http://crbug.com/159193).
  53     partition->ClearDataForOrigin(
  54         ~StoragePartition::REMOVE_DATA_MASK_SHADER_CACHE,
  55         StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL,
  56         origin,
  57         profile->GetRequestContextForExtensions(),
  58         callback);
  59   } else {
  60     // We don't need to worry about the media request context because that
  61     // shares the same cookie store as the main request context.
  62     partition->ClearDataForOrigin(
  63         ~StoragePartition::REMOVE_DATA_MASK_SHADER_CACHE,
  64         StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL,
  65         origin,
  66         partition->GetURLRequestContext(),
  67         callback);
  68   }
  69 }
  70
  71 void OnNeedsToGarbageCollectIsolatedStorage(WeakPtr<ExtensionService> es,
  72                                             const base::Closure& callback) {
  73   if (es)
  74     ExtensionPrefs::Get(es->profile())->SetNeedsStorageGarbageCollection(true);
  75   callback.Run();
  76 }
  77
  78 }  // namespace
  79
  80 // static
  81 void DataDeleter::StartDeleting(Profile* profile,
  82                                 const Extension* extension,
  83                                 const base::Closure& callback) {
  84   DCHECK(profile);
  85   DCHECK(extension);
  86
  87   if (AppIsolationInfo::HasIsolatedStorage(extension)) {
  88     BrowserContext::AsyncObliterateStoragePartition(
  89         profile,
  90         util::GetSiteForExtensionId(extension->id(), profile),
  91         base::Bind(
  92             &OnNeedsToGarbageCollectIsolatedStorage,
  93             ExtensionSystem::Get(profile)->extension_service()->AsWeakPtr(),
  94             callback));
  95   } else {
  96     GURL launch_web_url_origin(
  97         AppLaunchInfo::GetLaunchWebURL(extension).GetOrigin());
  98
  99     StoragePartition* partition = BrowserContext::GetStoragePartitionForSite(
 100         profile,
 101         Extension::GetBaseURLFromExtensionId(extension->id()));
 102
 103     ExtensionSpecialStoragePolicy* storage_policy =
 104         profile->GetExtensionSpecialStoragePolicy();
 105     if (storage_policy->NeedsProtection(extension) &&
 106         !storage_policy->IsStorageProtected(launch_web_url_origin)) {
 107       DeleteOrigin(profile,
 108                    partition,
 109                    launch_web_url_origin,
 110                    base::Bind(&base::DoNothing));
 111     }
 112     DeleteOrigin(profile, partition, extension->url(), callback);
 113   }
 114
 115   // Begin removal of the settings for the current extension.
 116   // StorageFrontend may not exist in unit tests.
 117   StorageFrontend* frontend = StorageFrontend::Get(profile);
 118   if (frontend)
 119     frontend->DeleteStorageSoon(extension->id());
 120 }
 121
 122 }  // namespace extensions