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android / platform / external / chromium_org / 0b0f963 / . / chrome / browser / extensions / extension_service.cc
blob: 8223ed1fc13f6e5ac63c496bbaadfcd13af464ad [file] [log] [blame]
// Copyright (c) 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 "chrome/browser/extensions/extension_service.h"
#include <algorithm>
#include <iterator>
#include <set>
#include "base/command_line.h"
#include "base/metrics/histogram.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/sequenced_worker_pool.h"
#include "base/threading/thread_restrictions.h"
#include "base/time/time.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/content_settings/content_settings_custom_extension_provider.h"
#include "chrome/browser/content_settings/content_settings_internal_extension_provider.h"
#include "chrome/browser/extensions/api/content_settings/content_settings_service.h"
#include "chrome/browser/extensions/component_loader.h"
#include "chrome/browser/extensions/crx_installer.h"
#include "chrome/browser/extensions/data_deleter.h"
#include "chrome/browser/extensions/extension_action_storage_manager.h"
#include "chrome/browser/extensions/extension_assets_manager.h"
#include "chrome/browser/extensions/extension_disabled_ui.h"
#include "chrome/browser/extensions/extension_error_controller.h"
#include "chrome/browser/extensions/extension_special_storage_policy.h"
#include "chrome/browser/extensions/extension_sync_service.h"
#include "chrome/browser/extensions/extension_util.h"
#include "chrome/browser/extensions/external_install_manager.h"
#include "chrome/browser/extensions/external_provider_impl.h"
#include "chrome/browser/extensions/install_verifier.h"
#include "chrome/browser/extensions/installed_loader.h"
#include "chrome/browser/extensions/pending_extension_manager.h"
#include "chrome/browser/extensions/permissions_updater.h"
#include "chrome/browser/extensions/shared_module_service.h"
#include "chrome/browser/extensions/unpacked_installer.h"
#include "chrome/browser/extensions/updater/chrome_extension_downloader_factory.h"
#include "chrome/browser/extensions/updater/extension_updater.h"
#include "chrome/browser/google/google_brand.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/extensions/extension_icon_source.h"
#include "chrome/browser/ui/webui/favicon_source.h"
#include "chrome/browser/ui/webui/ntp/thumbnail_source.h"
#include "chrome/browser/ui/webui/theme_source.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/crash_keys.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/extensions/features/feature_channel.h"
#include "chrome/common/url_constants.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/crx_file/id_util.h"
#include "components/startup_metric_utils/startup_metric_utils.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/storage_partition.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/extension_host.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/install_flag.h"
#include "extensions/browser/runtime_data.h"
#include "extensions/browser/uninstall_reason.h"
#include "extensions/browser/update_observer.h"
#include "extensions/browser/updater/extension_cache.h"
#include "extensions/browser/updater/extension_downloader.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/extension_urls.h"
#include "extensions/common/feature_switch.h"
#include "extensions/common/file_util.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/manifest_handlers/background_info.h"
#include "extensions/common/manifest_url_handlers.h"
#include "extensions/common/one_shot_event.h"
#include "extensions/common/permissions/permission_message_provider.h"
#include "extensions/common/permissions/permissions_data.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/extensions/install_limiter.h"
#include "storage/browser/fileapi/file_system_backend.h"
#include "storage/browser/fileapi/file_system_context.h"
#endif
using content::BrowserContext;
using content::BrowserThread;
using content::DevToolsAgentHost;
using extensions::CrxInstaller;
using extensions::Extension;
using extensions::ExtensionIdSet;
using extensions::ExtensionInfo;
using extensions::ExtensionRegistry;
using extensions::ExtensionSet;
using extensions::FeatureSwitch;
using extensions::InstallVerifier;
using extensions::ManagementPolicy;
using extensions::Manifest;
using extensions::PermissionMessage;
using extensions::PermissionMessages;
using extensions::PermissionSet;
using extensions::SharedModuleInfo;
using extensions::SharedModuleService;
using extensions::UnloadedExtensionInfo;
namespace errors = extensions::manifest_errors;
namespace {
// Wait this many seconds after an extensions becomes idle before updating it.
const int kUpdateIdleDelay = 5;
} // namespace
// ExtensionService.
void ExtensionService::CheckExternalUninstall(const std::string& id) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Check if the providers know about this extension.
extensions::ProviderCollection::const_iterator i;
for (i = external_extension_providers_.begin();
i != external_extension_providers_.end(); ++i) {
DCHECK(i->get()->IsReady());
if (i->get()->HasExtension(id))
return; // Yup, known extension, don't uninstall.
}
// We get the list of external extensions to check from preferences.
// It is possible that an extension has preferences but is not loaded.
// For example, an extension that requires experimental permissions
// will not be loaded if the experimental command line flag is not used.
// In this case, do not uninstall.
if (!GetInstalledExtension(id)) {
// We can't call UninstallExtension with an unloaded/invalid
// extension ID.
LOG(WARNING) << "Attempted uninstallation of unloaded/invalid extension "
<< "with id: " << id;
return;
}
UninstallExtension(id,
extensions::UNINSTALL_REASON_ORPHANED_EXTERNAL_EXTENSION,
base::Bind(&base::DoNothing),
NULL);
}
void ExtensionService::SetFileTaskRunnerForTesting(
const scoped_refptr<base::SequencedTaskRunner>& task_runner) {
file_task_runner_ = task_runner;
}
void ExtensionService::ClearProvidersForTesting() {
external_extension_providers_.clear();
}
void ExtensionService::AddProviderForTesting(
extensions::ExternalProviderInterface* test_provider) {
CHECK(test_provider);
external_extension_providers_.push_back(
linked_ptr<extensions::ExternalProviderInterface>(test_provider));
}
void ExtensionService::BlacklistExtensionForTest(
const std::string& extension_id) {
ExtensionIdSet blocked;
ExtensionIdSet unchanged;
blocked.insert(extension_id);
UpdateBlockedExtensions(blocked, unchanged);
}
bool ExtensionService::OnExternalExtensionUpdateUrlFound(
const std::string& id,
const std::string& install_parameter,
const GURL& update_url,
Manifest::Location location,
int creation_flags,
bool mark_acknowledged) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
CHECK(crx_file::id_util::IdIsValid(id));
if (Manifest::IsExternalLocation(location)) {
// All extensions that are not user specific can be cached.
extensions::ExtensionsBrowserClient::Get()->GetExtensionCache()
->AllowCaching(id);
}
const Extension* extension = GetExtensionById(id, true);
if (extension) {
// Already installed. Skip this install if the current location has
// higher priority than |location|.
Manifest::Location current = extension->location();
if (current == Manifest::GetHigherPriorityLocation(current, location))
return false;
// Otherwise, overwrite the current installation.
}
// Add |id| to the set of pending extensions. If it can not be added,
// then there is already a pending record from a higher-priority install
// source. In this case, signal that this extension will not be
// installed by returning false.
if (!pending_extension_manager()->AddFromExternalUpdateUrl(
id,
install_parameter,
update_url,
location,
creation_flags,
mark_acknowledged)) {
return false;
}
update_once_all_providers_are_ready_ = true;
return true;
}
// static
// This function is used to uninstall an extension via sync. The LOG statements
// within this function are used to inform the user if the uninstall cannot be
// done.
bool ExtensionService::UninstallExtensionHelper(
ExtensionService* extensions_service,
const std::string& extension_id,
extensions::UninstallReason reason) {
// We can't call UninstallExtension with an invalid extension ID.
if (!extensions_service->GetInstalledExtension(extension_id)) {
LOG(WARNING) << "Attempted uninstallation of non-existent extension with "
<< "id: " << extension_id;
return false;
}
// The following call to UninstallExtension will not allow an uninstall of a
// policy-controlled extension.
base::string16 error;
if (!extensions_service->UninstallExtension(
extension_id, reason, base::Bind(&base::DoNothing), &error)) {
LOG(WARNING) << "Cannot uninstall extension with id " << extension_id
<< ": " << error;
return false;
}
return true;
}
ExtensionService::ExtensionService(Profile* profile,
const CommandLine* command_line,
const base::FilePath& install_directory,
extensions::ExtensionPrefs* extension_prefs,
extensions::Blacklist* blacklist,
bool autoupdate_enabled,
bool extensions_enabled,
extensions::OneShotEvent* ready)
: extensions::Blacklist::Observer(blacklist),
profile_(profile),
system_(extensions::ExtensionSystem::Get(profile)),
extension_prefs_(extension_prefs),
blacklist_(blacklist),
extension_sync_service_(NULL),
registry_(extensions::ExtensionRegistry::Get(profile)),
pending_extension_manager_(profile),
install_directory_(install_directory),
extensions_enabled_(extensions_enabled),
show_extensions_prompts_(true),
install_updates_when_idle_(true),
ready_(ready),
update_once_all_providers_are_ready_(false),
browser_terminating_(false),
installs_delayed_for_gc_(false),
is_first_run_(false),
shared_module_service_(new extensions::SharedModuleService(profile_)) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Figure out if extension installation should be enabled.
if (extensions::ExtensionsBrowserClient::Get()->AreExtensionsDisabled(
*command_line, profile))
extensions_enabled_ = false;
registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Add(this,
extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Add(this, chrome::NOTIFICATION_UPGRADE_RECOMMENDED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Add(this,
chrome::NOTIFICATION_PROFILE_DESTRUCTION_STARTED,
content::Source<Profile>(profile_));
extensions::ExtensionManagementFactory::GetForBrowserContext(profile_)
->AddObserver(this);
// Set up the ExtensionUpdater
if (autoupdate_enabled) {
int update_frequency = extensions::kDefaultUpdateFrequencySeconds;
if (command_line->HasSwitch(switches::kExtensionsUpdateFrequency)) {
base::StringToInt(command_line->GetSwitchValueASCII(
switches::kExtensionsUpdateFrequency),
&update_frequency);
}
updater_.reset(new extensions::ExtensionUpdater(
this,
extension_prefs,
profile->GetPrefs(),
profile,
update_frequency,
extensions::ExtensionsBrowserClient::Get()->GetExtensionCache(),
base::Bind(ChromeExtensionDownloaderFactory::CreateForProfile,
profile)));
}
component_loader_.reset(
new extensions::ComponentLoader(this,
profile->GetPrefs(),
g_browser_process->local_state(),
profile));
if (extensions_enabled_) {
extensions::ExternalProviderImpl::CreateExternalProviders(
this, profile_, &external_extension_providers_);
}
// Set this as the ExtensionService for app sorting to ensure it causes syncs
// if required.
is_first_run_ = !extension_prefs_->SetAlertSystemFirstRun();
error_controller_.reset(
new extensions::ExtensionErrorController(profile_, is_first_run_));
external_install_manager_.reset(
new extensions::ExternalInstallManager(profile_, is_first_run_));
extension_action_storage_manager_.reset(
new extensions::ExtensionActionStorageManager(profile_));
// How long is the path to the Extensions directory?
UMA_HISTOGRAM_CUSTOM_COUNTS("Extensions.ExtensionRootPathLength",
install_directory_.value().length(), 0, 500, 100);
}
const ExtensionSet* ExtensionService::extensions() const {
return &registry_->enabled_extensions();
}
extensions::PendingExtensionManager*
ExtensionService::pending_extension_manager() {
return &pending_extension_manager_;
}
ExtensionService::~ExtensionService() {
// No need to unload extensions here because they are profile-scoped, and the
// profile is in the process of being deleted.
extensions::ProviderCollection::const_iterator i;
for (i = external_extension_providers_.begin();
i != external_extension_providers_.end(); ++i) {
extensions::ExternalProviderInterface* provider = i->get();
provider->ServiceShutdown();
}
}
void ExtensionService::Shutdown() {
extensions::ExtensionManagementFactory::GetInstance()
->GetForBrowserContext(profile())
->RemoveObserver(this);
system_->management_policy()->UnregisterProvider(
shared_module_policy_provider_.get());
}
const Extension* ExtensionService::GetExtensionById(
const std::string& id, bool include_disabled) const {
int include_mask = ExtensionRegistry::ENABLED;
if (include_disabled) {
// Include blacklisted extensions here because there are hundreds of
// callers of this function, and many might assume that this includes those
// that have been disabled due to blacklisting.
include_mask |= ExtensionRegistry::DISABLED |
ExtensionRegistry::BLACKLISTED;
}
return registry_->GetExtensionById(id, include_mask);
}
void ExtensionService::Init() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
base::Time begin_time = base::Time::Now();
DCHECK(!is_ready()); // Can't redo init.
DCHECK_EQ(registry_->enabled_extensions().size(), 0u);
const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
if (cmd_line->HasSwitch(switches::kInstallEphemeralAppFromWebstore)) {
// The sole purpose of this launch is to install a new extension from CWS
// and immediately terminate: loading already installed extensions is
// unnecessary and may interfere with the inline install dialog (e.g. if an
// extension listens to onStartup and opens a window).
SetReadyAndNotifyListeners();
} else {
// LoadAllExtensions() calls OnLoadedInstalledExtensions().
component_loader_->LoadAll();
extensions::InstalledLoader(this).LoadAllExtensions();
// Attempt to re-enable extensions whose only disable reason is reloading.
std::vector<std::string> extensions_to_enable;
const ExtensionSet& disabled_extensions = registry_->disabled_extensions();
for (ExtensionSet::const_iterator iter = disabled_extensions.begin();
iter != disabled_extensions.end(); ++iter) {
const Extension* e = iter->get();
if (extension_prefs_->GetDisableReasons(e->id()) ==
Extension::DISABLE_RELOAD) {
extensions_to_enable.push_back(e->id());
}
}
for (std::vector<std::string>::iterator it = extensions_to_enable.begin();
it != extensions_to_enable.end(); ++it) {
EnableExtension(*it);
}
// Finish install (if possible) of extensions that were still delayed while
// the browser was shut down.
scoped_ptr<extensions::ExtensionPrefs::ExtensionsInfo> delayed_info(
extension_prefs_->GetAllDelayedInstallInfo());
for (size_t i = 0; i < delayed_info->size(); ++i) {
ExtensionInfo* info = delayed_info->at(i).get();
scoped_refptr<const Extension> extension(NULL);
if (info->extension_manifest) {
std::string error;
extension = Extension::Create(
info->extension_path,
info->extension_location,
*info->extension_manifest,
extension_prefs_->GetDelayedInstallCreationFlags(
info->extension_id),
info->extension_id,
&error);
if (extension.get())
delayed_installs_.Insert(extension);
}
}
MaybeFinishDelayedInstallations();
scoped_ptr<extensions::ExtensionPrefs::ExtensionsInfo> delayed_info2(
extension_prefs_->GetAllDelayedInstallInfo());
UMA_HISTOGRAM_COUNTS_100("Extensions.UpdateOnLoad",
delayed_info2->size() - delayed_info->size());
SetReadyAndNotifyListeners();
// TODO(erikkay) this should probably be deferred to a future point
// rather than running immediately at startup.
CheckForExternalUpdates();
LoadGreylistFromPrefs();
}
UMA_HISTOGRAM_TIMES("Extensions.ExtensionServiceInitTime",
base::Time::Now() - begin_time);
}
void ExtensionService::LoadGreylistFromPrefs() {
scoped_ptr<ExtensionSet> all_extensions =
registry_->GenerateInstalledExtensionsSet();
for (ExtensionSet::const_iterator it = all_extensions->begin();
it != all_extensions->end(); ++it) {
extensions::BlacklistState state =
extension_prefs_->GetExtensionBlacklistState((*it)->id());
if (state == extensions::BLACKLISTED_SECURITY_VULNERABILITY ||
state == extensions::BLACKLISTED_POTENTIALLY_UNWANTED ||
state == extensions::BLACKLISTED_CWS_POLICY_VIOLATION)
greylist_.Insert(*it);
}
}
bool ExtensionService::UpdateExtension(const std::string& id,
const base::FilePath& extension_path,
bool file_ownership_passed,
CrxInstaller** out_crx_installer) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (browser_terminating_) {
LOG(WARNING) << "Skipping UpdateExtension due to browser shutdown";
// Leak the temp file at extension_path. We don't want to add to the disk
// I/O burden at shutdown, we can't rely on the I/O completing anyway, and
// the file is in the OS temp directory which should be cleaned up for us.
return false;
}
const extensions::PendingExtensionInfo* pending_extension_info =
pending_extension_manager()->GetById(id);
const Extension* extension = GetInstalledExtension(id);
if (!pending_extension_info && !extension) {
LOG(WARNING) << "Will not update extension " << id
<< " because it is not installed or pending";
// Delete extension_path since we're not creating a CrxInstaller
// that would do it for us.
if (!GetFileTaskRunner()->PostTask(
FROM_HERE,
base::Bind(
&extensions::file_util::DeleteFile, extension_path, false)))
NOTREACHED();
return false;
}
scoped_refptr<CrxInstaller> installer(
CrxInstaller::Create(this, scoped_ptr<ExtensionInstallPrompt>()));
installer->set_expected_id(id);
int creation_flags = Extension::NO_FLAGS;
if (pending_extension_info) {
installer->set_install_source(pending_extension_info->install_source());
installer->set_allow_silent_install(true);
if (pending_extension_info->remote_install())
installer->set_grant_permissions(false);
creation_flags = pending_extension_info->creation_flags();
if (pending_extension_info->mark_acknowledged())
external_install_manager_->AcknowledgeExternalExtension(id);
} else if (extension) {
installer->set_install_source(extension->location());
}
// If the extension was installed from or has migrated to the webstore, or
// its auto-update URL is from the webstore, treat it as a webstore install.
// Note that we ignore some older extensions with blank auto-update URLs
// because we are mostly concerned with restrictions on NaCl extensions,
// which are newer.
if ((extension && extension->from_webstore()) ||
(extension && extensions::ManifestURL::UpdatesFromGallery(extension)) ||
(!extension && extension_urls::IsWebstoreUpdateUrl(
pending_extension_info->update_url()))) {
creation_flags |= Extension::FROM_WEBSTORE;
}
// Bookmark apps being updated is kind of a contradiction, but that's because
// we mark the default apps as bookmark apps, and they're hosted in the web
// store, thus they can get updated. See http://crbug.com/101605 for more
// details.
if (extension && extension->from_bookmark())
creation_flags |= Extension::FROM_BOOKMARK;
if (extension && extension->was_installed_by_default())
creation_flags |= Extension::WAS_INSTALLED_BY_DEFAULT;
if (extension && extension->was_installed_by_oem())
creation_flags |= Extension::WAS_INSTALLED_BY_OEM;
if (extension && extension->was_installed_by_custodian())
creation_flags |= Extension::WAS_INSTALLED_BY_CUSTODIAN;
if (extension) {
installer->set_is_ephemeral(extension_prefs_->IsEphemeralApp(id));
installer->set_do_not_sync(extension_prefs_->DoNotSync(id));
}
installer->set_creation_flags(creation_flags);
installer->set_delete_source(file_ownership_passed);
installer->set_install_cause(extension_misc::INSTALL_CAUSE_UPDATE);
installer->InstallCrx(extension_path);
if (out_crx_installer)
*out_crx_installer = installer.get();
return true;
}
void ExtensionService::ReloadExtensionImpl(
// "transient" because the process of reloading may cause the reference
// to become invalid. Instead, use |extension_id|, a copy.
const std::string& transient_extension_id,
bool be_noisy) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// If the extension is already reloading, don't reload again.
if (extension_prefs_->GetDisableReasons(transient_extension_id) &
Extension::DISABLE_RELOAD) {
return;
}
// Ignore attempts to reload a blacklisted extension. Sometimes this can
// happen in a convoluted reload sequence triggered by the termination of a
// blacklisted extension and a naive attempt to reload it. For an example see
// http://crbug.com/373842.
if (registry_->blacklisted_extensions().Contains(transient_extension_id))
return;
base::FilePath path;
std::string extension_id = transient_extension_id;
const Extension* transient_current_extension =
GetExtensionById(extension_id, false);
// Disable the extension if it's loaded. It might not be loaded if it crashed.
if (transient_current_extension) {
// If the extension has an inspector open for its background page, detach
// the inspector and hang onto a cookie for it, so that we can reattach
// later.
// TODO(yoz): this is not incognito-safe!
extensions::ProcessManager* manager = system_->process_manager();
extensions::ExtensionHost* host =
manager->GetBackgroundHostForExtension(extension_id);
if (host && DevToolsAgentHost::HasFor(host->host_contents())) {
// Look for an open inspector for the background page.
scoped_refptr<DevToolsAgentHost> agent_host =
DevToolsAgentHost::GetOrCreateFor(host->host_contents());
agent_host->DisconnectWebContents();
orphaned_dev_tools_[extension_id] = agent_host;
}
path = transient_current_extension->path();
// BeingUpgraded is set back to false when the extension is added.
system_->runtime_data()->SetBeingUpgraded(transient_current_extension,
true);
DisableExtension(extension_id, Extension::DISABLE_RELOAD);
reloading_extensions_.insert(extension_id);
} else {
std::map<std::string, base::FilePath>::const_iterator iter =
unloaded_extension_paths_.find(extension_id);
if (iter == unloaded_extension_paths_.end()) {
return;
}
path = unloaded_extension_paths_[extension_id];
}
transient_current_extension = NULL;
if (delayed_installs_.Contains(extension_id)) {
FinishDelayedInstallation(extension_id);
return;
}
// If we're reloading a component extension, use the component extension
// loader's reloader.
if (component_loader_->Exists(extension_id)) {
component_loader_->Reload(extension_id);
return;
}
// Check the installed extensions to see if what we're reloading was already
// installed.
scoped_ptr<ExtensionInfo> installed_extension(
extension_prefs_->GetInstalledExtensionInfo(extension_id));
if (installed_extension.get() &&
installed_extension->extension_manifest.get()) {
extensions::InstalledLoader(this).Load(*installed_extension, false);
} else {
// Otherwise, the extension is unpacked (location LOAD).
// We should always be able to remember the extension's path. If it's not in
// the map, someone failed to update |unloaded_extension_paths_|.
CHECK(!path.empty());
scoped_refptr<extensions::UnpackedInstaller> unpacked_installer =
extensions::UnpackedInstaller::Create(this);
unpacked_installer->set_be_noisy_on_failure(be_noisy);
unpacked_installer->Load(path);
}
}
void ExtensionService::ReloadExtension(const std::string& extension_id) {
ReloadExtensionImpl(extension_id, true); // be_noisy
}
void ExtensionService::ReloadExtensionWithQuietFailure(
const std::string& extension_id) {
ReloadExtensionImpl(extension_id, false); // be_noisy
}
bool ExtensionService::UninstallExtension(
// "transient" because the process of uninstalling may cause the reference
// to become invalid. Instead, use |extenson->id()|.
const std::string& transient_extension_id,
extensions::UninstallReason reason,
const base::Closure& deletion_done_callback,
base::string16* error) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
scoped_refptr<const Extension> extension =
GetInstalledExtension(transient_extension_id);
// Callers should not send us nonexistent extensions.
CHECK(extension.get());
ManagementPolicy* by_policy = system_->management_policy();
// Policy change which triggers an uninstall will always set
// |external_uninstall| to true so this is the only way to uninstall
// managed extensions.
// Shared modules being uninstalled will also set |external_uninstall| to true
// so that we can guarantee users don't uninstall a shared module.
// (crbug.com/273300)
// TODO(rdevlin.cronin): This is probably not right. We should do something
// else, like include an enum IS_INTERNAL_UNINSTALL or IS_USER_UNINSTALL so
// we don't do this.
bool external_uninstall =
(reason == extensions::UNINSTALL_REASON_INTERNAL_MANAGEMENT) ||
(reason == extensions::UNINSTALL_REASON_REINSTALL) ||
(reason == extensions::UNINSTALL_REASON_ORPHANED_EXTERNAL_EXTENSION) ||
(reason == extensions::UNINSTALL_REASON_ORPHANED_SHARED_MODULE) ||
(reason == extensions::UNINSTALL_REASON_SYNC &&
extension->was_installed_by_custodian());
if (!external_uninstall &&
(!by_policy->UserMayModifySettings(extension.get(), error) ||
by_policy->MustRemainInstalled(extension.get(), error))) {
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_UNINSTALL_NOT_ALLOWED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension.get()));
return false;
}
syncer::SyncChange sync_change;
// Don't sync the uninstall if we're going to reinstall the extension
// momentarily.
if (extension_sync_service_ &&
reason != extensions::UNINSTALL_REASON_REINSTALL) {
sync_change = extension_sync_service_->PrepareToSyncUninstallExtension(
extension.get(), is_ready());
}
system_->install_verifier()->Remove(extension->id());
UMA_HISTOGRAM_ENUMERATION("Extensions.UninstallType",
extension->GetType(), 100);
RecordPermissionMessagesHistogram(extension.get(),
"Extensions.Permissions_Uninstall2");
// Unload before doing more cleanup to ensure that nothing is hanging on to
// any of these resources.
UnloadExtension(extension->id(), UnloadedExtensionInfo::REASON_UNINSTALL);
// Tell the backend to start deleting installed extensions on the file thread.
if (!Manifest::IsUnpackedLocation(extension->location())) {
if (!GetFileTaskRunner()->PostTask(
FROM_HERE,
base::Bind(&ExtensionService::UninstallExtensionOnFileThread,
extension->id(),
profile_,
install_directory_,
extension->path())))
NOTREACHED();
}
extensions::DataDeleter::StartDeleting(
profile_, extension.get(), deletion_done_callback);
UntrackTerminatedExtension(extension->id());
// Notify interested parties that we've uninstalled this extension.
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension.get()));
ExtensionRegistry::Get(profile_)
->TriggerOnUninstalled(extension.get(), reason);
if (sync_change.IsValid()) {
extension_sync_service_->ProcessSyncUninstallExtension(extension->id(),
sync_change);
}
delayed_installs_.Remove(extension->id());
extension_prefs_->OnExtensionUninstalled(
extension->id(), extension->location(), external_uninstall);
// Track the uninstallation.
UMA_HISTOGRAM_ENUMERATION("Extensions.ExtensionUninstalled", 1, 2);
return true;
}
// static
void ExtensionService::UninstallExtensionOnFileThread(
const std::string& id,
Profile* profile,
const base::FilePath& install_dir,
const base::FilePath& extension_path) {
extensions::ExtensionAssetsManager* assets_manager =
extensions::ExtensionAssetsManager::GetInstance();
assets_manager->UninstallExtension(id, profile, install_dir, extension_path);
}
bool ExtensionService::IsExtensionEnabled(
const std::string& extension_id) const {
if (registry_->enabled_extensions().Contains(extension_id) ||
registry_->terminated_extensions().Contains(extension_id)) {
return true;
}
if (registry_->disabled_extensions().Contains(extension_id) ||
registry_->blacklisted_extensions().Contains(extension_id)) {
return false;
}
// If the extension hasn't been loaded yet, check the prefs for it. Assume
// enabled unless otherwise noted.
return !extension_prefs_->IsExtensionDisabled(extension_id) &&
!extension_prefs_->IsExtensionBlacklisted(extension_id) &&
!extension_prefs_->IsExternalExtensionUninstalled(extension_id);
}
void ExtensionService::EnableExtension(const std::string& extension_id) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (IsExtensionEnabled(extension_id))
return;
const Extension* extension =
registry_->disabled_extensions().GetByID(extension_id);
ManagementPolicy* policy = system_->management_policy();
if (extension && policy->MustRemainDisabled(extension, NULL, NULL)) {
UMA_HISTOGRAM_COUNTS_100("Extensions.EnableDeniedByPolicy", 1);
return;
}
extension_prefs_->SetExtensionState(extension_id, Extension::ENABLED);
extension_prefs_->ClearDisableReasons(extension_id);
// This can happen if sync enables an extension that is not
// installed yet.
if (!extension)
return;
// Move it over to the enabled list.
registry_->AddEnabled(make_scoped_refptr(extension));
registry_->RemoveDisabled(extension->id());
NotifyExtensionLoaded(extension);
// Notify listeners that the extension was enabled.
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_ENABLED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension));
if (extension_sync_service_)
extension_sync_service_->SyncEnableExtension(*extension);
}
void ExtensionService::DisableExtension(
const std::string& extension_id,
Extension::DisableReason disable_reason) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// The extension may have been disabled already. Just add a disable reason.
if (!IsExtensionEnabled(extension_id)) {
extension_prefs_->AddDisableReason(extension_id, disable_reason);
return;
}
const Extension* extension = GetInstalledExtension(extension_id);
// |extension| can be NULL if sync disables an extension that is not
// installed yet.
// EXTERNAL_COMPONENT extensions are not generally modifiable by users, but
// can be uninstalled by the browser if the user sets extension-specific
// preferences.
if (extension &&
disable_reason != Extension::DISABLE_RELOAD &&
!system_->management_policy()->UserMayModifySettings(extension, NULL) &&
extension->location() != Manifest::EXTERNAL_COMPONENT) {
return;
}
extension_prefs_->SetExtensionState(extension_id, Extension::DISABLED);
extension_prefs_->AddDisableReason(extension_id, disable_reason);
int include_mask =
ExtensionRegistry::EVERYTHING & ~ExtensionRegistry::DISABLED;
extension = registry_->GetExtensionById(extension_id, include_mask);
if (!extension)
return;
// The extension is either enabled or terminated.
DCHECK(registry_->enabled_extensions().Contains(extension->id()) ||
registry_->terminated_extensions().Contains(extension->id()));
// Move it over to the disabled list. Don't send a second unload notification
// for terminated extensions being disabled.
registry_->AddDisabled(make_scoped_refptr(extension));
if (registry_->enabled_extensions().Contains(extension->id())) {
registry_->RemoveEnabled(extension->id());
NotifyExtensionUnloaded(extension, UnloadedExtensionInfo::REASON_DISABLE);
} else {
registry_->RemoveTerminated(extension->id());
}
if (extension_sync_service_)
extension_sync_service_->SyncDisableExtension(*extension);
}
void ExtensionService::DisableUserExtensions(
const std::vector<std::string>& except_ids) {
extensions::ManagementPolicy* management_policy =
system_->management_policy();
extensions::ExtensionList to_disable;
const ExtensionSet& enabled_set = registry_->enabled_extensions();
for (ExtensionSet::const_iterator extension = enabled_set.begin();
extension != enabled_set.end(); ++extension) {
if (management_policy->UserMayModifySettings(extension->get(), NULL))
to_disable.push_back(*extension);
}
const ExtensionSet& terminated_set = registry_->terminated_extensions();
for (ExtensionSet::const_iterator extension = terminated_set.begin();
extension != terminated_set.end(); ++extension) {
if (management_policy->UserMayModifySettings(extension->get(), NULL))
to_disable.push_back(*extension);
}
for (extensions::ExtensionList::const_iterator extension = to_disable.begin();
extension != to_disable.end(); ++extension) {
if ((*extension)->was_installed_by_default() &&
extension_urls::IsWebstoreUpdateUrl(
extensions::ManifestURL::GetUpdateURL(extension->get())))
continue;
const std::string& id = (*extension)->id();
if (except_ids.end() == std::find(except_ids.begin(), except_ids.end(), id))
DisableExtension(id, extensions::Extension::DISABLE_USER_ACTION);
}
}
void ExtensionService::GrantPermissionsAndEnableExtension(
const Extension* extension) {
GrantPermissions(extension);
RecordPermissionMessagesHistogram(extension,
"Extensions.Permissions_ReEnable2");
extension_prefs_->SetDidExtensionEscalatePermissions(extension, false);
EnableExtension(extension->id());
}
void ExtensionService::GrantPermissions(const Extension* extension) {
CHECK(extension);
extensions::PermissionsUpdater(profile()).GrantActivePermissions(extension);
}
// static
void ExtensionService::RecordPermissionMessagesHistogram(
const Extension* extension, const char* histogram) {
// Since this is called from multiple sources, and since the histogram macros
// use statics, we need to manually lookup the histogram ourselves.
base::HistogramBase* counter = base::LinearHistogram::FactoryGet(
histogram,
1,
PermissionMessage::kEnumBoundary,
PermissionMessage::kEnumBoundary + 1,
base::HistogramBase::kUmaTargetedHistogramFlag);
PermissionMessages permissions =
extension->permissions_data()->GetPermissionMessages();
if (permissions.empty()) {
counter->Add(PermissionMessage::kNone);
} else {
for (PermissionMessages::iterator it = permissions.begin();
it != permissions.end(); ++it)
counter->Add(it->id());
}
}
void ExtensionService::NotifyExtensionLoaded(const Extension* extension) {
// The URLRequestContexts need to be first to know that the extension
// was loaded, otherwise a race can arise where a renderer that is created
// for the extension may try to load an extension URL with an extension id
// that the request context doesn't yet know about. The profile is responsible
// for ensuring its URLRequestContexts appropriately discover the loaded
// extension.
system_->RegisterExtensionWithRequestContexts(extension);
// Tell renderers about the new extension, unless it's a theme (renderers
// don't need to know about themes).
if (!extension->is_theme()) {
for (content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
!i.IsAtEnd(); i.Advance()) {
content::RenderProcessHost* host = i.GetCurrentValue();
Profile* host_profile =
Profile::FromBrowserContext(host->GetBrowserContext());
if (host_profile->GetOriginalProfile() ==
profile_->GetOriginalProfile()) {
std::vector<ExtensionMsg_Loaded_Params> loaded_extensions(
1, ExtensionMsg_Loaded_Params(extension));
host->Send(
new ExtensionMsg_Loaded(loaded_extensions));
}
}
}
// Tell subsystems that use the EXTENSION_LOADED notification about the new
// extension.
//
// NOTE: It is important that this happen after notifying the renderers about
// the new extensions so that if we navigate to an extension URL in
// ExtensionRegistryObserver::OnLoaded or
// NOTIFICATION_EXTENSION_LOADED_DEPRECATED, the
// renderer is guaranteed to know about it.
registry_->TriggerOnLoaded(extension);
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension));
// TODO(kalman): Convert ExtensionSpecialStoragePolicy to a
// BrowserContextKeyedService and use ExtensionRegistryObserver.
profile_->GetExtensionSpecialStoragePolicy()->
GrantRightsForExtension(extension, profile_);
// TODO(kalman): This is broken. The crash reporter is process-wide so doesn't
// work properly multi-profile. Besides which, it should be using
// ExtensionRegistryObserver. See http://crbug.com/355029.
UpdateActiveExtensionsInCrashReporter();
const extensions::PermissionsData* permissions_data =
extension->permissions_data();
// If the extension has permission to load chrome://favicon/ resources we need
// to make sure that the FaviconSource is registered with the
// ChromeURLDataManager.
if (permissions_data->HasHostPermission(GURL(chrome::kChromeUIFaviconURL))) {
FaviconSource* favicon_source = new FaviconSource(profile_,
FaviconSource::FAVICON);
content::URLDataSource::Add(profile_, favicon_source);
}
// Same for chrome://theme/ resources.
if (permissions_data->HasHostPermission(GURL(chrome::kChromeUIThemeURL))) {
ThemeSource* theme_source = new ThemeSource(profile_);
content::URLDataSource::Add(profile_, theme_source);
}
// Same for chrome://thumb/ resources.
if (permissions_data->HasHostPermission(
GURL(chrome::kChromeUIThumbnailURL))) {
ThumbnailSource* thumbnail_source = new ThumbnailSource(profile_, false);
content::URLDataSource::Add(profile_, thumbnail_source);
}
}
void ExtensionService::NotifyExtensionUnloaded(
const Extension* extension,
UnloadedExtensionInfo::Reason reason) {
UnloadedExtensionInfo details(extension, reason);
registry_->TriggerOnUnloaded(extension, reason);
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<UnloadedExtensionInfo>(&details));
for (content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
!i.IsAtEnd(); i.Advance()) {
content::RenderProcessHost* host = i.GetCurrentValue();
Profile* host_profile =
Profile::FromBrowserContext(host->GetBrowserContext());
if (host_profile->GetOriginalProfile() == profile_->GetOriginalProfile())
host->Send(new ExtensionMsg_Unloaded(extension->id()));
}
system_->UnregisterExtensionWithRequestContexts(extension->id(), reason);
// TODO(kalman): Convert ExtensionSpecialStoragePolicy to a
// BrowserContextKeyedService and use ExtensionRegistryObserver.
profile_->GetExtensionSpecialStoragePolicy()->
RevokeRightsForExtension(extension);
#if defined(OS_CHROMEOS)
// Revoke external file access for the extension from its file system context.
// It is safe to access the extension's storage partition at this point. The
// storage partition may get destroyed only after the extension gets unloaded.
GURL site =
extensions::util::GetSiteForExtensionId(extension->id(), profile_);
storage::FileSystemContext* filesystem_context =
BrowserContext::GetStoragePartitionForSite(profile_, site)
->GetFileSystemContext();
if (filesystem_context && filesystem_context->external_backend()) {
filesystem_context->external_backend()->
RevokeAccessForExtension(extension->id());
}
#endif
// TODO(kalman): This is broken. The crash reporter is process-wide so doesn't
// work properly multi-profile. Besides which, it should be using
// ExtensionRegistryObserver::OnExtensionLoaded. See http://crbug.com/355029.
UpdateActiveExtensionsInCrashReporter();
}
content::BrowserContext* ExtensionService::GetBrowserContext() const {
// Implemented in the .cc file to avoid adding a profile.h dependency to
// extension_service.h.
return profile_;
}
bool ExtensionService::is_ready() {
return ready_->is_signaled();
}
base::SequencedTaskRunner* ExtensionService::GetFileTaskRunner() {
if (file_task_runner_.get())
return file_task_runner_.get();
// We should be able to interrupt any part of extension install process during
// shutdown. SKIP_ON_SHUTDOWN ensures that not started extension install tasks
// will be ignored/deleted while we will block on started tasks.
std::string token("ext_install-");
token.append(profile_->GetPath().AsUTF8Unsafe());
file_task_runner_ = BrowserThread::GetBlockingPool()->
GetSequencedTaskRunnerWithShutdownBehavior(
BrowserThread::GetBlockingPool()->GetNamedSequenceToken(token),
base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
return file_task_runner_.get();
}
void ExtensionService::CheckManagementPolicy() {
std::vector<std::string> to_unload;
std::map<std::string, Extension::DisableReason> to_disable;
// Loop through the extensions list, finding extensions we need to unload or
// disable.
const ExtensionSet& extensions = registry_->enabled_extensions();
for (ExtensionSet::const_iterator iter = extensions.begin();
iter != extensions.end(); ++iter) {
const Extension* extension = (iter->get());
if (!system_->management_policy()->UserMayLoad(extension, NULL))
to_unload.push_back(extension->id());
Extension::DisableReason disable_reason = Extension::DISABLE_NONE;
if (system_->management_policy()->MustRemainDisabled(
extension, &disable_reason, NULL))
to_disable[extension->id()] = disable_reason;
}
for (size_t i = 0; i < to_unload.size(); ++i)
UnloadExtension(to_unload[i], UnloadedExtensionInfo::REASON_DISABLE);
for (std::map<std::string, Extension::DisableReason>::const_iterator i =
to_disable.begin(); i != to_disable.end(); ++i)
DisableExtension(i->first, i->second);
}
void ExtensionService::CheckForUpdatesSoon() {
// This can legitimately happen in unit tests.
if (!updater_.get())
return;
if (AreAllExternalProvidersReady()) {
updater_->CheckSoon();
} else {
// Sync can start updating before all the external providers are ready
// during startup. Start the update as soon as those providers are ready,
// but not before.
update_once_all_providers_are_ready_ = true;
}
}
// Some extensions will autoupdate themselves externally from Chrome. These
// are typically part of some larger client application package. To support
// these, the extension will register its location in the the preferences file
// (and also, on Windows, in the registry) and this code will periodically
// check that location for a .crx file, which it will then install locally if
// a new version is available.
// Errors are reported through ExtensionErrorReporter. Succcess is not
// reported.
void ExtensionService::CheckForExternalUpdates() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Note that this installation is intentionally silent (since it didn't
// go through the front-end). Extensions that are registered in this
// way are effectively considered 'pre-bundled', and so implicitly
// trusted. In general, if something has HKLM or filesystem access,
// they could install an extension manually themselves anyway.
// Ask each external extension provider to give us a call back for each
// extension they know about. See OnExternalExtension(File|UpdateUrl)Found.
extensions::ProviderCollection::const_iterator i;
for (i = external_extension_providers_.begin();
i != external_extension_providers_.end(); ++i) {
extensions::ExternalProviderInterface* provider = i->get();
provider->VisitRegisteredExtension();
}
// Do any required work that we would have done after completion of all
// providers.
if (external_extension_providers_.empty())
OnAllExternalProvidersReady();
}
void ExtensionService::OnExternalProviderReady(
const extensions::ExternalProviderInterface* provider) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
CHECK(provider->IsReady());
// An external provider has finished loading. We only take action
// if all of them are finished. So we check them first.
if (AreAllExternalProvidersReady())
OnAllExternalProvidersReady();
}
bool ExtensionService::AreAllExternalProvidersReady() const {
extensions::ProviderCollection::const_iterator i;
for (i = external_extension_providers_.begin();
i != external_extension_providers_.end(); ++i) {
if (!i->get()->IsReady())
return false;
}
return true;
}
void ExtensionService::OnAllExternalProvidersReady() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
base::TimeDelta elapsed = base::Time::Now() - profile_->GetStartTime();
UMA_HISTOGRAM_TIMES("Extension.ExternalProvidersReadyAfter", elapsed);
// Install any pending extensions.
if (update_once_all_providers_are_ready_ && updater()) {
update_once_all_providers_are_ready_ = false;
extensions::ExtensionUpdater::CheckParams params;
params.callback = external_updates_finished_callback_;
updater()->CheckNow(params);
}
// Uninstall all the unclaimed extensions.
scoped_ptr<extensions::ExtensionPrefs::ExtensionsInfo> extensions_info(
extension_prefs_->GetInstalledExtensionsInfo());
for (size_t i = 0; i < extensions_info->size(); ++i) {
ExtensionInfo* info = extensions_info->at(i).get();
if (Manifest::IsExternalLocation(info->extension_location))
CheckExternalUninstall(info->extension_id);
}
error_controller_->ShowErrorIfNeeded();
external_install_manager_->UpdateExternalExtensionAlert();
}
void ExtensionService::UnloadExtension(
const std::string& extension_id,
UnloadedExtensionInfo::Reason reason) {
// Make sure the extension gets deleted after we return from this function.
int include_mask =
ExtensionRegistry::EVERYTHING & ~ExtensionRegistry::TERMINATED;
scoped_refptr<const Extension> extension(
registry_->GetExtensionById(extension_id, include_mask));
// This method can be called via PostTask, so the extension may have been
// unloaded by the time this runs.
if (!extension.get()) {
// In case the extension may have crashed/uninstalled. Allow the profile to
// clean up its RequestContexts.
system_->UnregisterExtensionWithRequestContexts(extension_id, reason);
return;
}
// Keep information about the extension so that we can reload it later
// even if it's not permanently installed.
unloaded_extension_paths_[extension->id()] = extension->path();
// Clean up if the extension is meant to be enabled after a reload.
reloading_extensions_.erase(extension->id());
if (registry_->disabled_extensions().Contains(extension->id())) {
registry_->RemoveDisabled(extension->id());
// Make sure the profile cleans up its RequestContexts when an already
// disabled extension is unloaded (since they are also tracking the disabled
// extensions).
system_->UnregisterExtensionWithRequestContexts(extension_id, reason);
// Don't send the unloaded notification. It was sent when the extension
// was disabled.
} else {
// Remove the extension from the enabled list.
registry_->RemoveEnabled(extension->id());
NotifyExtensionUnloaded(extension.get(), reason);
}
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_REMOVED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension.get()));
}
void ExtensionService::RemoveComponentExtension(
const std::string& extension_id) {
scoped_refptr<const Extension> extension(
GetExtensionById(extension_id, false));
UnloadExtension(extension_id, UnloadedExtensionInfo::REASON_UNINSTALL);
if (extension.get()) {
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension.get()));
ExtensionRegistry::Get(profile_)->TriggerOnUninstalled(
extension.get(), extensions::UNINSTALL_REASON_INTERNAL_MANAGEMENT);
}
}
void ExtensionService::UnloadAllExtensionsForTest() {
UnloadAllExtensionsInternal();
}
void ExtensionService::ReloadExtensionsForTest() {
// Calling UnloadAllExtensionsForTest here triggers a false-positive presubmit
// warning about calling test code in production.
UnloadAllExtensionsInternal();
component_loader_->LoadAll();
extensions::InstalledLoader(this).LoadAllExtensions();
// Don't call SetReadyAndNotifyListeners() since tests call this multiple
// times.
}
void ExtensionService::SetReadyAndNotifyListeners() {
ready_->Signal();
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSIONS_READY_DEPRECATED,
content::Source<Profile>(profile_),
content::NotificationService::NoDetails());
}
void ExtensionService::OnLoadedInstalledExtensions() {
if (updater_)
updater_->Start();
OnBlacklistUpdated();
}
void ExtensionService::AddExtension(const Extension* extension) {
// TODO(jstritar): We may be able to get rid of this branch by overriding the
// default extension state to DISABLED when the --disable-extensions flag
// is set (http://crbug.com/29067).
if (!extensions_enabled() &&
!extension->is_theme() &&
extension->location() != Manifest::COMPONENT &&
!Manifest::IsExternalLocation(extension->location())) {
return;
}
bool is_extension_upgrade = false;
bool is_extension_installed = false;
const Extension* old = GetInstalledExtension(extension->id());
if (old) {
is_extension_installed = true;
int version_compare_result =
extension->version()->CompareTo(*(old->version()));
is_extension_upgrade = version_compare_result > 0;
// Other than for unpacked extensions, CrxInstaller should have guaranteed
// that we aren't downgrading.
if (!Manifest::IsUnpackedLocation(extension->location()))
CHECK_GE(version_compare_result, 0);
}
system_->runtime_data()->SetBeingUpgraded(extension, is_extension_upgrade);
// The extension is now loaded, remove its data from unloaded extension map.
unloaded_extension_paths_.erase(extension->id());
// If a terminated extension is loaded, remove it from the terminated list.
UntrackTerminatedExtension(extension->id());
// If the extension was disabled for a reload, then enable it.
bool reloading = reloading_extensions_.erase(extension->id()) > 0;
// Check if the extension's privileges have changed and mark the
// extension disabled if necessary.
CheckPermissionsIncrease(extension, is_extension_installed);
if (is_extension_installed && !reloading) {
// To upgrade an extension in place, unload the old one and then load the
// new one. ReloadExtension disables the extension, which is sufficient.
UnloadExtension(extension->id(), UnloadedExtensionInfo::REASON_UPDATE);
}
if (extension_prefs_->IsExtensionBlacklisted(extension->id())) {
// Only prefs is checked for the blacklist. We rely on callers to check the
// blacklist before calling into here, e.g. CrxInstaller checks before
// installation then threads through the install and pending install flow
// of this class, and we check when loading installed extensions.
registry_->AddBlacklisted(extension);
} else if (!reloading &&
extension_prefs_->IsExtensionDisabled(extension->id())) {
registry_->AddDisabled(extension);
if (extension_sync_service_)
extension_sync_service_->SyncExtensionChangeIfNeeded(*extension);
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_UPDATE_DISABLED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension));
// Show the extension disabled error if a permissions increase or a remote
// installation is the reason it was disabled, and no other reasons exist.
int reasons = extension_prefs_->GetDisableReasons(extension->id());
const int kReasonMask = Extension::DISABLE_PERMISSIONS_INCREASE |
Extension::DISABLE_REMOTE_INSTALL;
if (reasons & kReasonMask && !(reasons & ~kReasonMask)) {
extensions::AddExtensionDisabledError(
this,
extension,
extension_prefs_->HasDisableReason(
extension->id(), Extension::DISABLE_REMOTE_INSTALL));
}
} else if (reloading) {
// Replace the old extension with the new version.
CHECK(!registry_->AddDisabled(extension));
EnableExtension(extension->id());
} else {
// All apps that are displayed in the launcher are ordered by their ordinals
// so we must ensure they have valid ordinals.
if (extension->RequiresSortOrdinal()) {
extension_prefs_->app_sorting()->SetExtensionVisible(
extension->id(),
extension->ShouldDisplayInNewTabPage() &&
!extension_prefs_->IsEphemeralApp(extension->id()));
if (!extension_prefs_->IsEphemeralApp(extension->id())) {
extension_prefs_->app_sorting()->EnsureValidOrdinals(
extension->id(), syncer::StringOrdinal());
}
}
registry_->AddEnabled(extension);
if (extension_sync_service_)
extension_sync_service_->SyncExtensionChangeIfNeeded(*extension);
NotifyExtensionLoaded(extension);
}
system_->runtime_data()->SetBeingUpgraded(extension, false);
}
void ExtensionService::AddComponentExtension(const Extension* extension) {
const std::string old_version_string(
extension_prefs_->GetVersionString(extension->id()));
const Version old_version(old_version_string);
VLOG(1) << "AddComponentExtension " << extension->name();
if (!old_version.IsValid() || !old_version.Equals(*extension->version())) {
VLOG(1) << "Component extension " << extension->name() << " ("
<< extension->id() << ") installing/upgrading from '"
<< old_version_string << "' to " << extension->version()->GetString();
AddNewOrUpdatedExtension(extension,
Extension::ENABLED,
extensions::kInstallFlagNone,
syncer::StringOrdinal(),
std::string());
return;
}
AddExtension(extension);
}
void ExtensionService::CheckPermissionsIncrease(const Extension* extension,
bool is_extension_installed) {
extensions::PermissionsUpdater(profile_).InitializePermissions(extension);
// We keep track of all permissions the user has granted each extension.
// This allows extensions to gracefully support backwards compatibility
// by including unknown permissions in their manifests. When the user
// installs the extension, only the recognized permissions are recorded.
// When the unknown permissions become recognized (e.g., through browser
// upgrade), we can prompt the user to accept these new permissions.
// Extensions can also silently upgrade to less permissions, and then
// silently upgrade to a version that adds these permissions back.
//
// For example, pretend that Chrome 10 includes a permission "omnibox"
// for an API that adds suggestions to the omnibox. An extension can
// maintain backwards compatibility while still having "omnibox" in the
// manifest. If a user installs the extension on Chrome 9, the browser
// will record the permissions it recognized, not including "omnibox."
// When upgrading to Chrome 10, "omnibox" will be recognized and Chrome
// will disable the extension and prompt the user to approve the increase
// in privileges. The extension could then release a new version that
// removes the "omnibox" permission. When the user upgrades, Chrome will
// still remember that "omnibox" had been granted, so that if the
// extension once again includes "omnibox" in an upgrade, the extension
// can upgrade without requiring this user's approval.
int disable_reasons = extension_prefs_->GetDisableReasons(extension->id());
bool auto_grant_permission =
(!is_extension_installed && extension->was_installed_by_default()) ||
extensions::ExtensionsBrowserClient::Get()->IsRunningInForcedAppMode();
// Silently grant all active permissions to default apps only on install.
// After install they should behave like other apps.
// Silently grant all active permissions to apps install in kiosk mode on both
// install and update.
if (auto_grant_permission)
GrantPermissions(extension);
bool is_privilege_increase = false;
// We only need to compare the granted permissions to the current permissions
// if the extension is not allowed to silently increase its permissions.
if (!extensions::PermissionsData::CanSilentlyIncreasePermissions(extension) &&
!auto_grant_permission) {
// Add all the recognized permissions if the granted permissions list
// hasn't been initialized yet.
scoped_refptr<PermissionSet> granted_permissions =
extension_prefs_->GetGrantedPermissions(extension->id());
CHECK(granted_permissions.get());
// Here, we check if an extension's privileges have increased in a manner
// that requires the user's approval. This could occur because the browser
// upgraded and recognized additional privileges, or an extension upgrades
// to a version that requires additional privileges.
is_privilege_increase =
extensions::PermissionMessageProvider::Get()->IsPrivilegeIncrease(
granted_permissions.get(),
extension->permissions_data()->active_permissions().get(),
extension->GetType());
}
if (is_extension_installed) {
// If the extension was already disabled, suppress any alerts for becoming
// disabled on permissions increase.
bool previously_disabled =
extension_prefs_->IsExtensionDisabled(extension->id());
// Legacy disabled extensions do not have a disable reason. Infer that if
// there was no permission increase, it was likely disabled by the user.
if (previously_disabled && disable_reasons == Extension::DISABLE_NONE &&
!extension_prefs_->DidExtensionEscalatePermissions(extension->id())) {
disable_reasons |= Extension::DISABLE_USER_ACTION;
}
// Extensions that came to us disabled from sync need a similar inference,
// except based on the new version's permissions.
if (previously_disabled &&
disable_reasons == Extension::DISABLE_UNKNOWN_FROM_SYNC) {
// Remove the DISABLE_UNKNOWN_FROM_SYNC reason.
extension_prefs_->ClearDisableReasons(extension->id());
if (!is_privilege_increase)
disable_reasons |= Extension::DISABLE_USER_ACTION;
}
disable_reasons &= ~Extension::DISABLE_UNKNOWN_FROM_SYNC;
}
// Extension has changed permissions significantly. Disable it. A
// notification should be sent by the caller. If the extension is already
// disabled because it was installed remotely, don't add another disable
// reason, but instead always set the "did escalate permissions" flag, to
// ensure enabling it will always show a warning.
if (disable_reasons == Extension::DISABLE_REMOTE_INSTALL) {
extension_prefs_->SetDidExtensionEscalatePermissions(extension, true);
} else if (is_privilege_increase) {
disable_reasons |= Extension::DISABLE_PERMISSIONS_INCREASE;
if (!extension_prefs_->DidExtensionEscalatePermissions(extension->id())) {
RecordPermissionMessagesHistogram(extension,
"Extensions.Permissions_AutoDisable2");
}
extension_prefs_->SetExtensionState(extension->id(), Extension::DISABLED);
extension_prefs_->SetDidExtensionEscalatePermissions(extension, true);
}
if (disable_reasons != Extension::DISABLE_NONE) {
extension_prefs_->AddDisableReason(
extension->id(),
static_cast<Extension::DisableReason>(disable_reasons));
}
}
void ExtensionService::UpdateActiveExtensionsInCrashReporter() {
std::set<std::string> extension_ids;
const ExtensionSet& extensions = registry_->enabled_extensions();
for (ExtensionSet::const_iterator iter = extensions.begin();
iter != extensions.end(); ++iter) {
const Extension* extension = iter->get();
if (!extension->is_theme() && extension->location() != Manifest::COMPONENT)
extension_ids.insert(extension->id());
}
// TODO(kalman): This is broken. ExtensionService is per-profile.
// crash_keys::SetActiveExtensions is per-process. See
// http://crbug.com/355029.
crash_keys::SetActiveExtensions(extension_ids);
}
void ExtensionService::OnExtensionInstalled(
const Extension* extension,
const syncer::StringOrdinal& page_ordinal,
int install_flags) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
const std::string& id = extension->id();
bool initial_enable = ShouldEnableOnInstall(extension);
std::string install_parameter;
const extensions::PendingExtensionInfo* pending_extension_info =
pending_extension_manager()->GetById(id);
if (pending_extension_info) {
if (!pending_extension_info->ShouldAllowInstall(extension)) {
pending_extension_manager()->Remove(id);
LOG(WARNING) << "ShouldAllowInstall() returned false for "
<< id << " of type " << extension->GetType()
<< " and update URL "
<< extensions::ManifestURL::GetUpdateURL(extension).spec()
<< "; not installing";
// Delete the extension directory since we're not going to
// load it.
if (!GetFileTaskRunner()->PostTask(
FROM_HERE,
base::Bind(&extensions::file_util::DeleteFile,
extension->path(),
true))) {
NOTREACHED();
}
return;
}
install_parameter = pending_extension_info->install_parameter();
pending_extension_manager()->Remove(id);
} else {
// We explicitly want to re-enable an uninstalled external
// extension; if we're here, that means the user is manually
// installing the extension.
if (extension_prefs_->IsExternalExtensionUninstalled(id)) {
initial_enable = true;
}
}
// Unsupported requirements overrides the management policy.
if (install_flags & extensions::kInstallFlagHasRequirementErrors) {
initial_enable = false;
extension_prefs_->AddDisableReason(
id, Extension::DISABLE_UNSUPPORTED_REQUIREMENT);
// If the extension was disabled because of unsupported requirements but
// now supports all requirements after an update and there are not other
// disable reasons, enable it.
} else if (extension_prefs_->GetDisableReasons(id) ==
Extension::DISABLE_UNSUPPORTED_REQUIREMENT) {
initial_enable = true;
extension_prefs_->ClearDisableReasons(id);
}
if (install_flags & extensions::kInstallFlagIsBlacklistedForMalware) {
// Installation of a blacklisted extension can happen from sync, policy,
// etc, where to maintain consistency we need to install it, just never
// load it (see AddExtension). Usually it should be the job of callers to
// incercept blacklisted extension earlier (e.g. CrxInstaller, before even
// showing the install dialogue).
extension_prefs_->AcknowledgeBlacklistedExtension(id);
UMA_HISTOGRAM_ENUMERATION("ExtensionBlacklist.SilentInstall",
extension->location(),
Manifest::NUM_LOCATIONS);
}
if (!GetInstalledExtension(extension->id())) {
UMA_HISTOGRAM_ENUMERATION("Extensions.InstallType",
extension->GetType(), 100);
UMA_HISTOGRAM_ENUMERATION("Extensions.InstallSource",
extension->location(), Manifest::NUM_LOCATIONS);
RecordPermissionMessagesHistogram(extension,
"Extensions.Permissions_Install2");
} else {
UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateType",
extension->GetType(), 100);
UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateSource",
extension->location(), Manifest::NUM_LOCATIONS);
// A fully installed app cannot be demoted to an ephemeral app.
if ((install_flags & extensions::kInstallFlagIsEphemeral) &&
!extension_prefs_->IsEphemeralApp(id)) {
install_flags &= ~static_cast<int>(extensions::kInstallFlagIsEphemeral);
}
}
const Extension::State initial_state =
initial_enable ? Extension::ENABLED : Extension::DISABLED;
if (ShouldDelayExtensionUpdate(
id,
!!(install_flags & extensions::kInstallFlagInstallImmediately))) {
extension_prefs_->SetDelayedInstallInfo(
extension,
initial_state,
install_flags,
extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IDLE,
page_ordinal,
install_parameter);
// Transfer ownership of |extension|.
delayed_installs_.Insert(extension);
// Notify observers that app update is available.
FOR_EACH_OBSERVER(extensions::UpdateObserver, update_observers_,
OnAppUpdateAvailable(extension));
return;
}
extensions::SharedModuleService::ImportStatus status =
shared_module_service_->SatisfyImports(extension);
if (installs_delayed_for_gc_) {
extension_prefs_->SetDelayedInstallInfo(
extension,
initial_state,
install_flags,
extensions::ExtensionPrefs::DELAY_REASON_GC,
page_ordinal,
install_parameter);
delayed_installs_.Insert(extension);
} else if (status != SharedModuleService::IMPORT_STATUS_OK) {
if (status == SharedModuleService::IMPORT_STATUS_UNSATISFIED) {
extension_prefs_->SetDelayedInstallInfo(
extension,
initial_state,
install_flags,
extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IMPORTS,
page_ordinal,
install_parameter);
delayed_installs_.Insert(extension);
}
} else {
AddNewOrUpdatedExtension(extension,
initial_state,
install_flags,
page_ordinal,
install_parameter);
}
}
void ExtensionService::OnExtensionManagementSettingsChanged() {
error_controller_->ShowErrorIfNeeded();
CheckManagementPolicy();
}
void ExtensionService::AddNewOrUpdatedExtension(
const Extension* extension,
Extension::State initial_state,
int install_flags,
const syncer::StringOrdinal& page_ordinal,
const std::string& install_parameter) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
bool was_ephemeral = extension_prefs_->IsEphemeralApp(extension->id());
extension_prefs_->OnExtensionInstalled(
extension, initial_state, page_ordinal, install_flags, install_parameter);
delayed_installs_.Remove(extension->id());
if (InstallVerifier::NeedsVerification(*extension))
system_->install_verifier()->VerifyExtension(extension->id());
FinishInstallation(extension, was_ephemeral);
}
void ExtensionService::MaybeFinishDelayedInstallation(
const std::string& extension_id) {
// Check if the extension already got installed.
if (!delayed_installs_.Contains(extension_id))
return;
extensions::ExtensionPrefs::DelayReason reason =
extension_prefs_->GetDelayedInstallReason(extension_id);
// Check if the extension is idle. DELAY_REASON_NONE is used for older
// preferences files that will not have set this field but it was previously
// only used for idle updates.
if ((reason == extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IDLE ||
reason == extensions::ExtensionPrefs::DELAY_REASON_NONE) &&
is_ready() && !extensions::util::IsExtensionIdle(extension_id, profile_))
return;
const Extension* extension = delayed_installs_.GetByID(extension_id);
if (reason == extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IMPORTS) {
extensions::SharedModuleService::ImportStatus status =
shared_module_service_->SatisfyImports(extension);
if (status != SharedModuleService::IMPORT_STATUS_OK) {
if (status == SharedModuleService::IMPORT_STATUS_UNRECOVERABLE) {
delayed_installs_.Remove(extension_id);
// Make sure no version of the extension is actually installed, (i.e.,
// that this delayed install was not an update).
CHECK(!extension_prefs_->GetInstalledExtensionInfo(extension_id).get());
extension_prefs_->DeleteExtensionPrefs(extension_id);
}
return;
}
}
FinishDelayedInstallation(extension_id);
}
void ExtensionService::FinishDelayedInstallation(
const std::string& extension_id) {
scoped_refptr<const Extension> extension(
GetPendingExtensionUpdate(extension_id));
CHECK(extension.get());
delayed_installs_.Remove(extension_id);
bool was_ephemeral = extension_prefs_->IsEphemeralApp(extension->id());
if (!extension_prefs_->FinishDelayedInstallInfo(extension_id))
NOTREACHED();
FinishInstallation(extension.get(), was_ephemeral);
}
void ExtensionService::FinishInstallation(
const Extension* extension, bool was_ephemeral) {
const extensions::Extension* existing_extension =
GetInstalledExtension(extension->id());
bool is_update = false;
std::string old_name;
if (existing_extension) {
is_update = true;
old_name = existing_extension->name();
}
bool from_ephemeral =
was_ephemeral && !extension_prefs_->IsEphemeralApp(extension->id());
extensions::InstalledExtensionInfo details(
extension, is_update, from_ephemeral, old_name);
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<const extensions::InstalledExtensionInfo>(&details));
registry_->TriggerOnWillBeInstalled(
extension, is_update, from_ephemeral, old_name);
// Unpacked extensions default to allowing file access, but if that has been
// overridden, don't reset the value.
if (Manifest::ShouldAlwaysAllowFileAccess(extension->location()) &&
!extension_prefs_->HasAllowFileAccessSetting(extension->id())) {
extension_prefs_->SetAllowFileAccess(extension->id(), true);
}
AddExtension(extension);
// Notify observers that need to know when an installation is complete.
registry_->TriggerOnInstalled(extension, is_update);
// Check extensions that may have been delayed only because this shared module
// was not available.
if (SharedModuleInfo::IsSharedModule(extension))
MaybeFinishDelayedInstallations();
}
void ExtensionService::PromoteEphemeralApp(
const extensions::Extension* extension, bool is_from_sync) {
DCHECK(GetInstalledExtension(extension->id()) &&
extension_prefs_->IsEphemeralApp(extension->id()));
if (extension->RequiresSortOrdinal()) {
extension_prefs_->app_sorting()->SetExtensionVisible(
extension->id(), extension->ShouldDisplayInNewTabPage());
if (!is_from_sync) {
// Reset the sort ordinals of the app to ensure it is added to the default
// position, like newly installed apps would.
extension_prefs_->app_sorting()->ClearOrdinals(extension->id());
}
extension_prefs_->app_sorting()->EnsureValidOrdinals(
extension->id(), syncer::StringOrdinal());
}
// Remove the ephemeral flags from the preferences.
extension_prefs_->OnEphemeralAppPromoted(extension->id());
// Fire install-related events to allow observers to handle the promotion
// of the ephemeral app.
extensions::InstalledExtensionInfo details(
extension,
true /* is update */,
true /* from ephemeral */,
extension->name() /* old name */);
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<const extensions::InstalledExtensionInfo>(&details));
registry_->TriggerOnWillBeInstalled(
extension,
true /* is update */,
true /* from ephemeral */,
extension->name() /* old name */);
if (registry_->enabled_extensions().Contains(extension->id())) {
// If the app is already enabled and loaded, fire the load events to allow
// observers to handle the promotion of the ephemeral app.
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension));
registry_->TriggerOnLoaded(extension);
} else {
// Cached ephemeral apps may be updated and disabled due to permissions
// increase. The app can be enabled (as long as no other disable reasons
// exist) as the install was user-acknowledged.
int disable_mask = Extension::DISABLE_NONE;
if (!is_from_sync)
disable_mask |= Extension::DISABLE_PERMISSIONS_INCREASE;
int other_disable_reasons =
extension_prefs_->GetDisableReasons(extension->id()) & ~disable_mask;
if (!other_disable_reasons) {
if (extension_prefs_->DidExtensionEscalatePermissions(extension->id()))
GrantPermissionsAndEnableExtension(extension);
else
EnableExtension(extension->id());
}
}
registry_->TriggerOnInstalled(extension, true);
if (!is_from_sync && extension_sync_service_)
extension_sync_service_->SyncExtensionChangeIfNeeded(*extension);
}
const Extension* ExtensionService::GetPendingExtensionUpdate(
const std::string& id) const {
return delayed_installs_.GetByID(id);
}
void ExtensionService::RegisterContentSettings(
HostContentSettingsMap* host_content_settings_map) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
host_content_settings_map->RegisterProvider(
HostContentSettingsMap::INTERNAL_EXTENSION_PROVIDER,
scoped_ptr<content_settings::ObservableProvider>(
new content_settings::InternalExtensionProvider(this)));
host_content_settings_map->RegisterProvider(
HostContentSettingsMap::CUSTOM_EXTENSION_PROVIDER,
scoped_ptr<content_settings::ObservableProvider>(
new content_settings::CustomExtensionProvider(
extensions::ContentSettingsService::Get(
profile_)->content_settings_store(),
profile_->GetOriginalProfile() != profile_)));
}
void ExtensionService::TrackTerminatedExtension(const Extension* extension) {
// No need to check for duplicates; inserting a duplicate is a no-op.
registry_->AddTerminated(make_scoped_refptr(extension));
extensions_being_terminated_.erase(extension->id());
UnloadExtension(extension->id(), UnloadedExtensionInfo::REASON_TERMINATE);
}
void ExtensionService::TerminateExtension(const std::string& extension_id) {
const Extension* extension = GetInstalledExtension(extension_id);
TrackTerminatedExtension(extension);
}
void ExtensionService::UntrackTerminatedExtension(const std::string& id) {
std::string lowercase_id = base::StringToLowerASCII(id);
const Extension* extension =
registry_->terminated_extensions().GetByID(lowercase_id);
registry_->RemoveTerminated(lowercase_id);
if (extension) {
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_REMOVED,
content::Source<Profile>(profile_),
content::Details<const Extension>(extension));
}
}
const Extension* ExtensionService::GetInstalledExtension(
const std::string& id) const {
return registry_->GetExtensionById(id, ExtensionRegistry::EVERYTHING);
}
bool ExtensionService::OnExternalExtensionFileFound(
const std::string& id,
const Version* version,
const base::FilePath& path,
Manifest::Location location,
int creation_flags,
bool mark_acknowledged) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
CHECK(crx_file::id_util::IdIsValid(id));
if (extension_prefs_->IsExternalExtensionUninstalled(id))
return false;
// Before even bothering to unpack, check and see if we already have this
// version. This is important because these extensions are going to get
// installed on every startup.
const Extension* existing = GetExtensionById(id, true);
if (existing) {
// The default apps will have the location set as INTERNAL. Since older
// default apps are installed as EXTERNAL, we override them. However, if the
// app is already installed as internal, then do the version check.
// TODO(grv) : Remove after Q1-2013.
bool is_default_apps_migration =
(location == Manifest::INTERNAL &&
Manifest::IsExternalLocation(existing->location()));
if (!is_default_apps_migration) {
DCHECK(version);
switch (existing->version()->CompareTo(*version)) {
case -1: // existing version is older, we should upgrade
break;
case 0: // existing version is same, do nothing
return false;
case 1: // existing version is newer, uh-oh
LOG(WARNING) << "Found external version of extension " << id
<< "that is older than current version. Current version "
<< "is: " << existing->VersionString() << ". New "
<< "version is: " << version->GetString()
<< ". Keeping current version.";
return false;
}
}
}
// If the extension is already pending, don't start an install.
if (!pending_extension_manager()->AddFromExternalFile(
id, location, *version, creation_flags, mark_acknowledged)) {
return false;
}
// no client (silent install)
scoped_refptr<CrxInstaller> installer(CrxInstaller::CreateSilent(this));
installer->set_install_source(location);
installer->set_expected_id(id);
installer->set_expected_version(*version);
installer->set_install_cause(extension_misc::INSTALL_CAUSE_EXTERNAL_FILE);
installer->set_creation_flags(creation_flags);
#if defined(OS_CHROMEOS)
extensions::InstallLimiter::Get(profile_)->Add(installer, path);
#else
installer->InstallCrx(path);
#endif
// Depending on the source, a new external extension might not need a user
// notification on installation. For such extensions, mark them acknowledged
// now to suppress the notification.
if (mark_acknowledged)
external_install_manager_->AcknowledgeExternalExtension(id);
return true;
}
void ExtensionService::DidCreateRenderViewForBackgroundPage(
extensions::ExtensionHost* host) {
OrphanedDevTools::iterator iter =
orphaned_dev_tools_.find(host->extension_id());
if (iter == orphaned_dev_tools_.end())
return;
iter->second->ConnectWebContents(host->host_contents());
orphaned_dev_tools_.erase(iter);
}
void ExtensionService::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_APP_TERMINATING:
// Shutdown has started. Don't start any more extension installs.
// (We cannot use ExtensionService::Shutdown() for this because it
// happens too late in browser teardown.)
browser_terminating_ = true;
break;
case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
if (profile_ !=
content::Source<Profile>(source).ptr()->GetOriginalProfile()) {
break;
}
extensions::ExtensionHost* host =
content::Details<extensions::ExtensionHost>(details).ptr();
// If the extension is already being terminated, there is nothing left to
// do.
if (!extensions_being_terminated_.insert(host->extension_id()).second)
break;
// Mark the extension as terminated and Unload it. We want it to
// be in a consistent state: either fully working or not loaded
// at all, but never half-crashed. We do it in a PostTask so
// that other handlers of this notification will still have
// access to the Extension and ExtensionHost.
base::MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(
&ExtensionService::TrackTerminatedExtension,
AsWeakPtr(),
host->extension()));
break;
}
case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED: {
content::RenderProcessHost* process =
content::Source<content::RenderProcessHost>(source).ptr();
Profile* host_profile =
Profile::FromBrowserContext(process->GetBrowserContext());
if (!profile_->IsSameProfile(host_profile->GetOriginalProfile()))
break;
extensions::ProcessMap* process_map =
extensions::ProcessMap::Get(profile_);
if (process_map->Contains(process->GetID())) {
// An extension process was terminated, this might have resulted in an
// app or extension becoming idle.
std::set<std::string> extension_ids =
process_map->GetExtensionsInProcess(process->GetID());
// In addition to the extensions listed in the process map, one of those
// extensions could be referencing a shared module which is waiting for
// idle to update. Check all imports of these extensions, too.
std::set<std::string> import_ids;
for (std::set<std::string>::const_iterator it = extension_ids.begin();
it != extension_ids.end();
++it) {
const Extension* extension = GetExtensionById(*it, true);
if (!extension)
continue;
const std::vector<SharedModuleInfo::ImportInfo>& imports =
SharedModuleInfo::GetImports(extension);
std::vector<SharedModuleInfo::ImportInfo>::const_iterator import_it;
for (import_it = imports.begin(); import_it != imports.end();
import_it++) {
import_ids.insert((*import_it).extension_id);
}
}
extension_ids.insert(import_ids.begin(), import_ids.end());
for (std::set<std::string>::const_iterator it = extension_ids.begin();
it != extension_ids.end(); ++it) {
if (delayed_installs_.Contains(*it)) {
base::MessageLoop::current()->PostDelayedTask(
FROM_HERE,
base::Bind(&ExtensionService::MaybeFinishDelayedInstallation,
AsWeakPtr(), *it),
base::TimeDelta::FromSeconds(kUpdateIdleDelay));
}
}
}
process_map->RemoveAllFromProcess(process->GetID());
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&extensions::InfoMap::UnregisterAllExtensionsInProcess,
system_->info_map(),
process->GetID()));
break;
}
case chrome::NOTIFICATION_UPGRADE_RECOMMENDED: {
// Notify observers that chrome update is available.
FOR_EACH_OBSERVER(extensions::UpdateObserver, update_observers_,
OnChromeUpdateAvailable());
break;
}
case chrome::NOTIFICATION_PROFILE_DESTRUCTION_STARTED: {
OnProfileDestructionStarted();
break;
}
default:
NOTREACHED() << "Unexpected notification type.";
}
}
bool ExtensionService::ShouldEnableOnInstall(const Extension* extension) {
// Extensions installed by policy can't be disabled. So even if a previous
// installation disabled the extension, make sure it is now enabled.
if (system_->management_policy()->MustRemainEnabled(extension, NULL))
return true;
if (extension_prefs_->IsExtensionDisabled(extension->id()))
return false;
if (FeatureSwitch::prompt_for_external_extensions()->IsEnabled()) {
// External extensions are initially disabled. We prompt the user before
// enabling them. Hosted apps are excepted because they are not dangerous
// (they need to be launched by the user anyway).
if (extension->GetType() != Manifest::TYPE_HOSTED_APP &&
Manifest::IsExternalLocation(extension->location()) &&
!extension_prefs_->IsExternalExtensionAcknowledged(extension->id())) {
return false;
}
}
return true;
}
bool ExtensionService::ShouldDelayExtensionUpdate(
const std::string& extension_id,
bool install_immediately) const {
const char kOnUpdateAvailableEvent[] = "runtime.onUpdateAvailable";
// If delayed updates are globally disabled, or just for this extension,
// don't delay.
if (!install_updates_when_idle_ || install_immediately)
return false;
const Extension* old = GetInstalledExtension(extension_id);
// If there is no old extension, this is not an update, so don't delay.
if (!old)
return false;
if (extensions::BackgroundInfo::HasPersistentBackgroundPage(old)) {
// Delay installation if the extension listens for the onUpdateAvailable
// event.
return system_->event_router()->ExtensionHasEventListener(
extension_id, kOnUpdateAvailableEvent);
} else {
// Delay installation if the extension is not idle.
return !extensions::util::IsExtensionIdle(extension_id, profile_);
}
}
void ExtensionService::OnGarbageCollectIsolatedStorageStart() {
DCHECK(!installs_delayed_for_gc_);
installs_delayed_for_gc_ = true;
}
void ExtensionService::OnGarbageCollectIsolatedStorageFinished() {
DCHECK(installs_delayed_for_gc_);
installs_delayed_for_gc_ = false;
MaybeFinishDelayedInstallations();
}
void ExtensionService::MaybeFinishDelayedInstallations() {
std::vector<std::string> to_be_installed;
for (ExtensionSet::const_iterator it = delayed_installs_.begin();
it != delayed_installs_.end();
++it) {
to_be_installed.push_back((*it)->id());
}
for (std::vector<std::string>::const_iterator it = to_be_installed.begin();
it != to_be_installed.end();
++it) {
MaybeFinishDelayedInstallation(*it);
}
}
void ExtensionService::OnBlacklistUpdated() {
blacklist_->GetBlacklistedIDs(
registry_->GenerateInstalledExtensionsSet()->GetIDs(),
base::Bind(&ExtensionService::ManageBlacklist, AsWeakPtr()));
}
void ExtensionService::ManageBlacklist(
const extensions::Blacklist::BlacklistStateMap& state_map) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
std::set<std::string> blocked;
ExtensionIdSet greylist;
ExtensionIdSet unchanged;
for (extensions::Blacklist::BlacklistStateMap::const_iterator it =
state_map.begin();
it != state_map.end();
++it) {
switch (it->second) {
case extensions::NOT_BLACKLISTED:
break;
case extensions::BLACKLISTED_MALWARE:
blocked.insert(it->first);
break;
case extensions::BLACKLISTED_SECURITY_VULNERABILITY:
case extensions::BLACKLISTED_CWS_POLICY_VIOLATION:
case extensions::BLACKLISTED_POTENTIALLY_UNWANTED:
greylist.insert(it->first);
break;
case extensions::BLACKLISTED_UNKNOWN:
unchanged.insert(it->first);
break;
}
}
UpdateBlockedExtensions(blocked, unchanged);
UpdateGreylistedExtensions(greylist, unchanged, state_map);
error_controller_->ShowErrorIfNeeded();
}
namespace {
void Partition(const ExtensionIdSet& before,
const ExtensionIdSet& after,
const ExtensionIdSet& unchanged,
ExtensionIdSet* no_longer,
ExtensionIdSet* not_yet) {
*not_yet = base::STLSetDifference<ExtensionIdSet>(after, before);
*no_longer = base::STLSetDifference<ExtensionIdSet>(before, after);
*no_longer = base::STLSetDifference<ExtensionIdSet>(*no_longer, unchanged);
}
} // namespace
void ExtensionService::UpdateBlockedExtensions(
const ExtensionIdSet& blocked,
const ExtensionIdSet& unchanged) {
ExtensionIdSet not_yet_blocked, no_longer_blocked;
Partition(registry_->blacklisted_extensions().GetIDs(),
blocked, unchanged,
&no_longer_blocked, &not_yet_blocked);
for (ExtensionIdSet::iterator it = no_longer_blocked.begin();
it != no_longer_blocked.end(); ++it) {
scoped_refptr<const Extension> extension =
registry_->blacklisted_extensions().GetByID(*it);
if (!extension.get()) {
NOTREACHED() << "Extension " << *it << " no longer blocked, "
<< "but it was never blocked.";
continue;
}
registry_->RemoveBlacklisted(*it);
extension_prefs_->SetExtensionBlacklisted(extension->id(), false);
AddExtension(extension.get());
UMA_HISTOGRAM_ENUMERATION("ExtensionBlacklist.UnblacklistInstalled",
extension->location(),
Manifest::NUM_LOCATIONS);
}
for (ExtensionIdSet::iterator it = not_yet_blocked.begin();
it != not_yet_blocked.end(); ++it) {
scoped_refptr<const Extension> extension = GetInstalledExtension(*it);
if (!extension.get()) {
NOTREACHED() << "Extension " << *it << " needs to be "
<< "blacklisted, but it's not installed.";
continue;
}
registry_->AddBlacklisted(extension);
extension_prefs_->SetExtensionBlacklistState(
extension->id(), extensions::BLACKLISTED_MALWARE);
UnloadExtension(*it, UnloadedExtensionInfo::REASON_BLACKLIST);
UMA_HISTOGRAM_ENUMERATION("ExtensionBlacklist.BlacklistInstalled",
extension->location(), Manifest::NUM_LOCATIONS);
}
}
// TODO(oleg): UMA logging
void ExtensionService::UpdateGreylistedExtensions(
const ExtensionIdSet& greylist,
const ExtensionIdSet& unchanged,
const extensions::Blacklist::BlacklistStateMap& state_map) {
ExtensionIdSet not_yet_greylisted, no_longer_greylisted;
Partition(greylist_.GetIDs(),
greylist, unchanged,
&no_longer_greylisted, &not_yet_greylisted);
for (ExtensionIdSet::iterator it = no_longer_greylisted.begin();
it != no_longer_greylisted.end(); ++it) {
scoped_refptr<const Extension> extension = greylist_.GetByID(*it);
if (!extension.get()) {
NOTREACHED() << "Extension " << *it << " no longer greylisted, "
<< "but it was not marked as greylisted.";
continue;
}
greylist_.Remove(*it);
extension_prefs_->SetExtensionBlacklistState(extension->id(),
extensions::NOT_BLACKLISTED);
if (extension_prefs_->GetDisableReasons(extension->id()) &
extensions::Extension::DISABLE_GREYLIST)
EnableExtension(*it);
}
for (ExtensionIdSet::iterator it = not_yet_greylisted.begin();
it != not_yet_greylisted.end(); ++it) {
scoped_refptr<const Extension> extension = GetInstalledExtension(*it);
if (!extension.get()) {
NOTREACHED() << "Extension " << *it << " needs to be "
<< "disabled, but it's not installed.";
continue;
}
greylist_.Insert(extension);
extension_prefs_->SetExtensionBlacklistState(extension->id(),
state_map.find(*it)->second);
if (registry_->enabled_extensions().Contains(extension->id()))
DisableExtension(*it, extensions::Extension::DISABLE_GREYLIST);
}
}
void ExtensionService::AddUpdateObserver(extensions::UpdateObserver* observer) {
update_observers_.AddObserver(observer);
}
void ExtensionService::RemoveUpdateObserver(
extensions::UpdateObserver* observer) {
update_observers_.RemoveObserver(observer);
}
// Used only by test code.
void ExtensionService::UnloadAllExtensionsInternal() {
profile_->GetExtensionSpecialStoragePolicy()->RevokeRightsForAllExtensions();
registry_->ClearAll();
system_->runtime_data()->ClearAll();
// TODO(erikkay) should there be a notification for this? We can't use
// EXTENSION_UNLOADED since that implies that the extension has been disabled
// or uninstalled.
}
void ExtensionService::OnProfileDestructionStarted() {
ExtensionIdSet ids_to_unload = registry_->enabled_extensions().GetIDs();
for (ExtensionIdSet::iterator it = ids_to_unload.begin();
it != ids_to_unload.end();
++it) {
UnloadExtension(*it, UnloadedExtensionInfo::REASON_PROFILE_SHUTDOWN);
}
}