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chromium / chromium / src / f2ea0e7e43ed78908d91613f1f227af329aff20c / . / chrome / browser / extensions / extensions_service.cc
blob: 9e7b3592bd0a44f81147e06774360a5dece50f12 [file] [log] [blame]
// Copyright (c) 2010 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/extensions_service.h"
#include <algorithm>
#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/file_util.h"
#include "base/metrics/histogram.h"
#include "base/stl_util-inl.h"
#include "base/string16.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/thread_restrictions.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "base/values_util.h"
#include "base/version.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/themes/browser_theme_provider.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/debugger/devtools_manager.h"
#include "chrome/browser/dom_ui/shown_sections_handler.h"
#include "chrome/browser/extensions/crx_installer.h"
#include "chrome/browser/extensions/default_apps.h"
#include "chrome/browser/extensions/extension_accessibility_api.h"
#include "chrome/browser/extensions/extension_bookmarks_module.h"
#include "chrome/browser/extensions/extension_browser_event_router.h"
#include "chrome/browser/extensions/extension_cookies_api.h"
#include "chrome/browser/extensions/extension_data_deleter.h"
#include "chrome/browser/extensions/extension_dom_ui.h"
#include "chrome/browser/extensions/extension_error_reporter.h"
#include "chrome/browser/extensions/extension_history_api.h"
#include "chrome/browser/extensions/extension_host.h"
#include "chrome/browser/extensions/extension_management_api.h"
#include "chrome/browser/extensions/extension_process_manager.h"
#include "chrome/browser/extensions/extension_processes_api.h"
#include "chrome/browser/extensions/extension_updater.h"
#include "chrome/browser/extensions/extension_webnavigation_api.h"
#include "chrome/browser/extensions/external_extension_provider.h"
#include "chrome/browser/extensions/external_policy_extension_provider.h"
#include "chrome/browser/extensions/external_pref_extension_provider.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/search_engines/template_url_model.h"
#include "chrome/browser/sync/glue/extension_sync_traits.h"
#include "chrome/browser/sync/glue/extension_util.h"
#include "chrome/common/child_process_logging.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/extensions/extension_error_utils.h"
#include "chrome/common/extensions/extension_file_util.h"
#include "chrome/common/extensions/extension_l10n_util.h"
#include "chrome/common/extensions/extension_resource.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/notification_type.h"
#include "chrome/common/json_value_serializer.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "googleurl/src/gurl.h"
#include "net/base/registry_controlled_domain.h"
#include "webkit/database/database_tracker.h"
#include "webkit/database/database_util.h"
#if defined(OS_WIN)
#include "chrome/browser/extensions/external_registry_extension_provider_win.h"
#endif
using base::Time;
namespace errors = extension_manifest_errors;
namespace {
#if defined(OS_LINUX)
static const int kOmniboxIconPaddingLeft = 2;
static const int kOmniboxIconPaddingRight = 2;
#elif defined(OS_MACOSX)
static const int kOmniboxIconPaddingLeft = 0;
static const int kOmniboxIconPaddingRight = 2;
#else
static const int kOmniboxIconPaddingLeft = 0;
static const int kOmniboxIconPaddingRight = 0;
#endif
// The following enumeration is used in histograms matching
// Extensions.ManifestReload* . Values may be added, as long
// as existing values are not changed.
enum ManifestReloadReason {
NOT_NEEDED = 0, // Reload not needed.
UNPACKED_DIR, // Unpacked directory
NEEDS_RELOCALIZATION, // The local has changed since we read this extension.
NUM_MANIFEST_RELOAD_REASONS
};
ManifestReloadReason ShouldReloadExtensionManifest(const ExtensionInfo& info) {
// Always reload manifests of unpacked extensions, because they can change
// on disk independent of the manifest in our prefs.
if (info.extension_location == Extension::LOAD)
return UNPACKED_DIR;
// Reload the manifest if it needs to be relocalized.
if (extension_l10n_util::ShouldRelocalizeManifest(info))
return NEEDS_RELOCALIZATION;
return NOT_NEEDED;
}
void GetExplicitOriginsInExtent(const Extension* extension,
std::vector<GURL>* origins) {
typedef std::vector<URLPattern> PatternList;
std::set<GURL> set;
const PatternList& patterns = extension->web_extent().patterns();
for (PatternList::const_iterator pattern = patterns.begin();
pattern != patterns.end(); ++pattern) {
if (pattern->match_subdomains() || pattern->match_all_urls())
continue;
// Wildcard URL schemes won't parse into a valid GURL, so explicit schemes
// must be used.
PatternList explicit_patterns = pattern->ConvertToExplicitSchemes();
for (PatternList::const_iterator explicit_p = explicit_patterns.begin();
explicit_p != explicit_patterns.end(); ++explicit_p) {
GURL origin = GURL(explicit_p->GetAsString()).GetOrigin();
if (origin.is_valid()) {
set.insert(origin);
} else {
NOTREACHED();
}
}
}
for (std::set<GURL>::const_iterator unique = set.begin();
unique != set.end(); ++unique) {
origins->push_back(*unique);
}
}
} // namespace
PendingExtensionInfo::PendingExtensionInfo(
const GURL& update_url,
PendingExtensionInfo::ExpectedCrxType expected_crx_type,
bool is_from_sync,
bool install_silently,
bool enable_on_install,
bool enable_incognito_on_install,
Extension::Location location)
: update_url(update_url),
expected_crx_type(expected_crx_type),
is_from_sync(is_from_sync),
install_silently(install_silently),
enable_on_install(enable_on_install),
enable_incognito_on_install(enable_incognito_on_install),
install_source(location) {}
PendingExtensionInfo::PendingExtensionInfo()
: update_url(),
expected_crx_type(PendingExtensionInfo::UNKNOWN),
is_from_sync(true),
install_silently(false),
enable_on_install(false),
enable_incognito_on_install(false),
install_source(Extension::INVALID) {}
ExtensionsService::ExtensionRuntimeData::ExtensionRuntimeData()
: background_page_ready(false),
being_upgraded(false) {
}
ExtensionsService::ExtensionRuntimeData::~ExtensionRuntimeData() {
}
// ExtensionsService.
const char* ExtensionsService::kInstallDirectoryName = "Extensions";
const char* ExtensionsService::kCurrentVersionFileName = "Current Version";
// Implements IO for the ExtensionsService.
class ExtensionsServiceBackend
: public base::RefCountedThreadSafe<ExtensionsServiceBackend>,
public ExternalExtensionProvider::Visitor {
public:
// |install_directory| is a path where to look for extensions to load.
// |load_external_extensions| indicates whether or not backend should load
// external extensions listed in JSON file and Windows registry.
ExtensionsServiceBackend(PrefService* prefs,
const FilePath& install_directory,
bool load_external_extensions);
// Loads a single extension from |path| where |path| is the top directory of
// a specific extension where its manifest file lives.
// Errors are reported through ExtensionErrorReporter. On success,
// OnExtensionLoaded() is called.
// TODO(erikkay): It might be useful to be able to load a packed extension
// (presumably into memory) without installing it.
void LoadSingleExtension(const FilePath &path,
scoped_refptr<ExtensionsService> frontend);
// Check externally updated extensions for updates and install if necessary.
// Errors are reported through ExtensionErrorReporter. Succcess is not
// reported.
void CheckForExternalUpdates(const std::set<std::string>& ids_to_ignore,
scoped_refptr<ExtensionsService> frontend);
// For the extension in |version_path| with |id|, check to see if it's an
// externally managed extension. If so, tell the frontend to uninstall it.
void CheckExternalUninstall(scoped_refptr<ExtensionsService> frontend,
const std::string& id);
// Clear all ExternalExtensionProviders.
void ClearProvidersForTesting();
// Adds an ExternalExtensionProvider for the service to use during testing.
// Takes ownership of |test_provider|.
void AddProviderForTesting(ExternalExtensionProvider* test_provider);
// ExternalExtensionProvider::Visitor implementation.
virtual void OnExternalExtensionFileFound(const std::string& id,
const Version* version,
const FilePath& path,
Extension::Location location);
virtual void OnExternalExtensionUpdateUrlFound(const std::string& id,
const GURL& update_url,
Extension::Location location);
virtual void UpdateExternalPolicyExtensionProvider(
scoped_refptr<RefCountedList> forcelist);
private:
friend class base::RefCountedThreadSafe<ExtensionsServiceBackend>;
virtual ~ExtensionsServiceBackend();
// Finish installing the extension in |crx_path| after it has been unpacked to
// |unpacked_path|. If |expected_id| is not empty, it's verified against the
// extension's manifest before installation. If |silent| is true, there will
// be no install confirmation dialog. |from_gallery| indicates whether the
// crx was installed from our gallery, which results in different UI.
//
// Note: We take ownership of |extension|.
void OnExtensionUnpacked(const FilePath& crx_path,
const FilePath& unpacked_path,
const Extension* extension,
const std::string expected_id);
// Notify the frontend that there was an error loading an extension.
void ReportExtensionLoadError(const FilePath& extension_path,
const std::string& error);
// This is a naked pointer which is set by each entry point.
// The entry point is responsible for ensuring lifetime.
ExtensionsService* frontend_;
// The top-level extensions directory being installed to.
FilePath install_directory_;
// Whether errors result in noisy alerts.
bool alert_on_error_;
// A collection of external extension providers. Each provider reads
// a source of external extension information. Examples include the
// windows registry and external_extensions.json.
typedef std::vector<linked_ptr<ExternalExtensionProvider> >
ProviderCollection;
ProviderCollection external_extension_providers_;
linked_ptr<ExternalPolicyExtensionProvider>
external_policy_extension_provider_;
// Set to true by OnExternalExtensionUpdateUrlFound() when an external
// extension URL is found. Used in CheckForExternalUpdates() to see
// if an update check is needed to install pending extensions.
bool external_extension_added_;
DISALLOW_COPY_AND_ASSIGN(ExtensionsServiceBackend);
};
ExtensionsServiceBackend::ExtensionsServiceBackend(
PrefService* prefs,
const FilePath& install_directory,
bool load_external_extensions)
: frontend_(NULL),
install_directory_(install_directory),
alert_on_error_(false),
external_extension_added_(false) {
if (!load_external_extensions)
return;
// TODO(aa): This ends up doing blocking IO on the UI thread because it reads
// pref data in the ctor and that is called on the UI thread. Would be better
// to re-read data each time we list external extensions, anyway.
external_extension_providers_.push_back(
linked_ptr<ExternalExtensionProvider>(
new ExternalPrefExtensionProvider()));
#if defined(OS_WIN)
external_extension_providers_.push_back(
linked_ptr<ExternalExtensionProvider>(
new ExternalRegistryExtensionProvider()));
#endif
// The policy-controlled extension provider is also stored in a member
// variable so that UpdateExternalPolicyExtensionProvider can access it and
// update its extension list later.
external_policy_extension_provider_.reset(
new ExternalPolicyExtensionProvider());
external_policy_extension_provider_->SetPreferences(
prefs->GetList(prefs::kExtensionInstallForceList));
external_extension_providers_.push_back(external_policy_extension_provider_);
}
ExtensionsServiceBackend::~ExtensionsServiceBackend() {
}
void ExtensionsServiceBackend::LoadSingleExtension(
const FilePath& path_in, scoped_refptr<ExtensionsService> frontend) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
frontend_ = frontend;
// Explicit UI loads are always noisy.
alert_on_error_ = true;
FilePath extension_path = path_in;
file_util::AbsolutePath(&extension_path);
std::string error;
scoped_refptr<const Extension> extension(extension_file_util::LoadExtension(
extension_path,
Extension::LOAD,
false, // Don't require id
&error));
if (!extension) {
ReportExtensionLoadError(extension_path, error);
return;
}
// Report this as an installed extension so that it gets remembered in the
// prefs.
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(frontend_,
&ExtensionsService::OnExtensionInstalled,
extension));
}
void ExtensionsServiceBackend::ReportExtensionLoadError(
const FilePath& extension_path, const std::string &error) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(
frontend_,
&ExtensionsService::ReportExtensionLoadError, extension_path,
error, NotificationType::EXTENSION_INSTALL_ERROR, alert_on_error_));
}
// 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.
void ExtensionsServiceBackend::CheckForExternalUpdates(
const std::set<std::string>& ids_to_ignore,
scoped_refptr<ExtensionsService> frontend) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
// 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.
alert_on_error_ = false;
frontend_ = frontend;
external_extension_added_ = false;
// Ask each external extension provider to give us a call back for each
// extension they know about. See OnExternalExtension(File|UpdateUrl)Found.
ProviderCollection::const_iterator i;
for (i = external_extension_providers_.begin();
i != external_extension_providers_.end(); ++i) {
ExternalExtensionProvider* provider = i->get();
provider->VisitRegisteredExtension(this, ids_to_ignore);
}
if (external_extension_added_ && frontend->updater()) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(
frontend->updater(), &ExtensionUpdater::CheckNow));
}
}
void ExtensionsServiceBackend::CheckExternalUninstall(
scoped_refptr<ExtensionsService> frontend, const std::string& id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
// Check if the providers know about this extension.
ProviderCollection::const_iterator i;
for (i = external_extension_providers_.begin();
i != external_extension_providers_.end(); ++i) {
if (i->get()->HasExtension(id))
return; // Yup, known extension, don't uninstall.
}
// This is an external extension that we don't have registered. Uninstall.
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(
frontend.get(), &ExtensionsService::UninstallExtension, id, true));
}
void ExtensionsServiceBackend::UpdateExternalPolicyExtensionProvider(
scoped_refptr<RefCountedList> forcelist) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
external_policy_extension_provider_->SetPreferences(forcelist->Get());
}
void ExtensionsServiceBackend::ClearProvidersForTesting() {
external_extension_providers_.clear();
}
void ExtensionsServiceBackend::AddProviderForTesting(
ExternalExtensionProvider* test_provider) {
DCHECK(test_provider);
external_extension_providers_.push_back(
linked_ptr<ExternalExtensionProvider>(test_provider));
}
void ExtensionsServiceBackend::OnExternalExtensionFileFound(
const std::string& id, const Version* version, const FilePath& path,
Extension::Location location) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
DCHECK(version);
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(
frontend_, &ExtensionsService::OnExternalExtensionFileFound, id,
version->GetString(), path, location));
}
void ExtensionsServiceBackend::OnExternalExtensionUpdateUrlFound(
const std::string& id,
const GURL& update_url,
Extension::Location location) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
if (frontend_->GetExtensionById(id, true)) {
// Already installed. Do not change the update URL that the extension set.
return;
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(
frontend_,
&ExtensionsService::AddPendingExtensionFromExternalUpdateUrl,
id, update_url, location));
external_extension_added_ |= true;
}
bool ExtensionsService::IsDownloadFromGallery(const GURL& download_url,
const GURL& referrer_url) {
// Special-case the themes mini-gallery.
// TODO(erikkay) When that gallery goes away, remove this code.
if (IsDownloadFromMiniGallery(download_url) &&
StartsWithASCII(referrer_url.spec(),
extension_urls::kMiniGalleryBrowsePrefix, false)) {
return true;
}
const Extension* download_extension = GetExtensionByWebExtent(download_url);
const Extension* referrer_extension = GetExtensionByWebExtent(referrer_url);
const Extension* webstore_app = GetWebStoreApp();
bool referrer_valid = (referrer_extension == webstore_app);
bool download_valid = (download_extension == webstore_app);
// If the command-line gallery URL is set, then be a bit more lenient.
GURL store_url =
GURL(CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kAppsGalleryURL));
if (!store_url.is_empty()) {
std::string store_tld =
net::RegistryControlledDomainService::GetDomainAndRegistry(store_url);
if (!referrer_valid) {
std::string referrer_tld =
net::RegistryControlledDomainService::GetDomainAndRegistry(
referrer_url);
// The referrer gets stripped when transitioning from https to http,
// or when hitting an unknown test cert and that commonly happens in
// testing environments. Given this, we allow an empty referrer when
// the command-line flag is set.
// Otherwise, the TLD must match the TLD of the command-line url.
referrer_valid = referrer_url.is_empty() || (referrer_tld == store_tld);
}
if (!download_valid) {
std::string download_tld =
net::RegistryControlledDomainService::GetDomainAndRegistry(
GURL(download_url));
// Otherwise, the TLD must match the TLD of the command-line url.
download_valid = (download_tld == store_tld);
}
}
return (referrer_valid && download_valid);
}
bool ExtensionsService::IsDownloadFromMiniGallery(const GURL& download_url) {
return StartsWithASCII(download_url.spec(),
extension_urls::kMiniGalleryDownloadPrefix,
false); // case_sensitive
}
// static
bool ExtensionsService::UninstallExtensionHelper(
ExtensionsService* extensions_service,
const std::string& extension_id) {
DCHECK(extensions_service);
// We can't call UninstallExtension with an invalid extension ID, so check it
// first.
if (extensions_service->GetExtensionById(extension_id, true)) {
extensions_service->UninstallExtension(extension_id, false);
} else {
LOG(WARNING) << "Attempted uninstallation of non-existent extension with "
<< "id: " << extension_id;
return false;
}
return true;
}
ExtensionsService::ExtensionsService(Profile* profile,
const CommandLine* command_line,
const FilePath& install_directory,
bool autoupdate_enabled)
: profile_(profile),
extension_prefs_(new ExtensionPrefs(profile->GetPrefs(),
install_directory)),
install_directory_(install_directory),
extensions_enabled_(true),
show_extensions_prompts_(true),
ready_(false),
ALLOW_THIS_IN_INITIALIZER_LIST(toolbar_model_(this)),
default_apps_(profile->GetPrefs()),
event_routers_initialized_(false) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Figure out if extension installation should be enabled.
if (command_line->HasSwitch(switches::kDisableExtensions)) {
extensions_enabled_ = false;
} else if (profile->GetPrefs()->GetBoolean(prefs::kDisableExtensions)) {
extensions_enabled_ = false;
}
registrar_.Add(this, NotificationType::EXTENSION_PROCESS_TERMINATED,
NotificationService::AllSources());
pref_change_registrar_.Init(profile->GetPrefs());
pref_change_registrar_.Add(prefs::kExtensionInstallAllowList, this);
pref_change_registrar_.Add(prefs::kExtensionInstallDenyList, this);
pref_change_registrar_.Add(prefs::kExtensionInstallForceList, this);
// Set up the ExtensionUpdater
if (autoupdate_enabled) {
int update_frequency = kDefaultUpdateFrequencySeconds;
if (command_line->HasSwitch(switches::kExtensionsUpdateFrequency)) {
base::StringToInt(command_line->GetSwitchValueASCII(
switches::kExtensionsUpdateFrequency),
&update_frequency);
}
updater_ = new ExtensionUpdater(this,
profile->GetPrefs(),
update_frequency);
}
backend_ = new ExtensionsServiceBackend(profile->GetPrefs(),
install_directory_,
extensions_enabled_);
// Use monochrome icons for Omnibox icons.
omnibox_popup_icon_manager_.set_monochrome(true);
omnibox_icon_manager_.set_monochrome(true);
omnibox_icon_manager_.set_padding(gfx::Insets(0, kOmniboxIconPaddingLeft,
0, kOmniboxIconPaddingRight));
}
ExtensionsService::~ExtensionsService() {
DCHECK(!profile_); // Profile should have told us it's going away.
UnloadAllExtensions();
if (updater_.get()) {
updater_->Stop();
}
}
void ExtensionsService::InitEventRouters() {
if (event_routers_initialized_)
return;
ExtensionHistoryEventRouter::GetInstance()->ObserveProfile(profile_);
ExtensionAccessibilityEventRouter::GetInstance()->ObserveProfile(profile_);
ExtensionBrowserEventRouter::GetInstance()->Init(profile_);
ExtensionBookmarkEventRouter::GetSingleton()->Observe(
profile_->GetBookmarkModel());
ExtensionCookiesEventRouter::GetInstance()->Init();
ExtensionManagementEventRouter::GetInstance()->Init();
ExtensionProcessesEventRouter::GetInstance()->ObserveProfile(profile_);
ExtensionWebNavigationEventRouter::GetInstance()->Init();
event_routers_initialized_ = true;
}
void ExtensionsService::Init() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!ready_); // Can't redo init.
DCHECK_EQ(extensions_.size(), 0u);
// Hack: we need to ensure the ResourceDispatcherHost is ready before we load
// the first extension, because its members listen for loaded notifications.
g_browser_process->resource_dispatcher_host();
LoadAllExtensions();
// TODO(erikkay) this should probably be deferred to a future point
// rather than running immediately at startup.
CheckForExternalUpdates();
// TODO(erikkay) this should probably be deferred as well.
GarbageCollectExtensions();
}
void ExtensionsService::InstallExtension(const FilePath& extension_path) {
scoped_refptr<CrxInstaller> installer(
new CrxInstaller(this, // frontend
NULL)); // no client (silent install)
installer->InstallCrx(extension_path);
}
namespace {
// TODO(akalin): Put this somewhere where both crx_installer.cc and
// this file can use it.
void DeleteFileHelper(const FilePath& path, bool recursive) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
file_util::Delete(path, recursive);
}
} // namespace
void ExtensionsService::UpdateExtension(const std::string& id,
const FilePath& extension_path,
const GURL& download_url) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
PendingExtensionMap::const_iterator it = pending_extensions_.find(id);
bool is_pending_extension = (it != pending_extensions_.end());
const Extension* extension = GetExtensionByIdInternal(id, true, true);
if (!is_pending_extension && !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.
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableFunction(&DeleteFileHelper, extension_path, false));
return;
}
// We want a silent install only for non-pending extensions and
// pending extensions that have install_silently set.
ExtensionInstallUI* client =
(!is_pending_extension || it->second.install_silently) ?
NULL : new ExtensionInstallUI(profile_);
scoped_refptr<CrxInstaller> installer(
new CrxInstaller(this, // frontend
client));
installer->set_expected_id(id);
if (is_pending_extension)
installer->set_install_source(it->second.install_source);
else if (extension)
installer->set_install_source(extension->location());
installer->set_delete_source(true);
installer->set_original_url(download_url);
installer->InstallCrx(extension_path);
}
void ExtensionsService::AddPendingExtensionFromSync(
const std::string& id, const GURL& update_url,
PendingExtensionInfo::ExpectedCrxType expected_crx_type,
bool install_silently, bool enable_on_install,
bool enable_incognito_on_install) {
if (GetExtensionByIdInternal(id, true, true)) {
LOG(DFATAL) << "Trying to add pending extension " << id
<< " which already exists";
return;
}
AddPendingExtensionInternal(id, update_url, expected_crx_type, true,
install_silently, enable_on_install,
enable_incognito_on_install,
Extension::INTERNAL);
}
void ExtensionsService::AddPendingExtensionFromExternalUpdateUrl(
const std::string& id, const GURL& update_url,
Extension::Location location) {
// Add the extension to this list of extensions to update.
const PendingExtensionInfo::ExpectedCrxType kExpectedCrxType =
PendingExtensionInfo::UNKNOWN;
const bool kIsFromSync = false;
const bool kInstallSilently = true;
const bool kEnableOnInstall = true;
const bool kEnableIncognitoOnInstall = false;
if (GetExtensionByIdInternal(id, true, true)) {
LOG(DFATAL) << "Trying to add extension " << id
<< " by external update, but it is already installed.";
return;
}
AddPendingExtensionInternal(id, update_url, kExpectedCrxType, kIsFromSync,
kInstallSilently, kEnableOnInstall,
kEnableIncognitoOnInstall,
location);
}
void ExtensionsService::AddPendingExtensionFromDefaultAppList(
const std::string& id) {
// Add the extension to this list of extensions to update.
const PendingExtensionInfo::ExpectedCrxType kExpectedCrxType =
PendingExtensionInfo::APP;
const bool kIsFromSync = false;
const bool kInstallSilently = true;
const bool kEnableOnInstall = true;
const bool kEnableIncognitoOnInstall = true;
// This can legitimately happen if the user manually installed one of the
// default apps before this code ran.
if (GetExtensionByIdInternal(id, true, true))
return;
AddPendingExtensionInternal(id, GURL(), kExpectedCrxType, kIsFromSync,
kInstallSilently, kEnableOnInstall,
kEnableIncognitoOnInstall,
Extension::INTERNAL);
}
void ExtensionsService::AddPendingExtensionInternal(
const std::string& id, const GURL& update_url,
PendingExtensionInfo::ExpectedCrxType expected_crx_type,
bool is_from_sync, bool install_silently,
bool enable_on_install, bool enable_incognito_on_install,
Extension::Location install_source) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// If a non-sync update is pending, a sync request should not
// overwrite it. This is important for external extensions.
// If an external extension download is pending, and the user has
// the extension in their sync profile, the install should set the
// type to be external. An external extension should not be
// rejected if it fails the safty checks for a syncable extension.
// TODO(skerner): Work out other potential overlapping conditions.
// (crbug.com/61000)
PendingExtensionMap::iterator it = pending_extensions_.find(id);
if (it != pending_extensions_.end()) {
VLOG(1) << "Extension id " << id
<< " was entered for update more than once."
<< " old is_from_sync = " << it->second.is_from_sync
<< " new is_from_sync = " << is_from_sync;
if (!it->second.is_from_sync && is_from_sync)
return;
}
pending_extensions_[id] =
PendingExtensionInfo(update_url, expected_crx_type, is_from_sync,
install_silently, enable_on_install,
enable_incognito_on_install, install_source);
}
void ExtensionsService::ReloadExtension(const std::string& extension_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
FilePath path;
const Extension* current_extension = GetExtensionById(extension_id, false);
// Disable the extension if it's loaded. It might not be loaded if it crashed.
if (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.
ExtensionProcessManager* manager = profile_->GetExtensionProcessManager();
ExtensionHost* host = manager->GetBackgroundHostForExtension(
current_extension);
if (host) {
// Look for an open inspector for the background page.
int devtools_cookie = DevToolsManager::GetInstance()->DetachClientHost(
host->render_view_host());
if (devtools_cookie >= 0)
orphaned_dev_tools_[extension_id] = devtools_cookie;
}
path = current_extension->path();
DisableExtension(extension_id);
disabled_extension_paths_[extension_id] = path;
} else {
path = unloaded_extension_paths_[extension_id];
}
// 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()) {
LoadInstalledExtension(*installed_extension, false);
} else {
// 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());
LoadExtension(path);
}
}
void ExtensionsService::UninstallExtension(const std::string& extension_id,
bool external_uninstall) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
const Extension* extension =
GetExtensionByIdInternal(extension_id, true, true);
// Callers should not send us nonexistent extensions.
DCHECK(extension);
// Get hold of information we need after unloading, since the extension
// pointer will be invalid then.
GURL extension_url(extension->url());
Extension::Location location(extension->location());
UninstalledExtensionInfo uninstalled_extension_info(*extension);
UMA_HISTOGRAM_ENUMERATION("Extensions.UninstallType",
extension->GetHistogramType(), 100);
// Also copy the extension identifier since the reference might have been
// obtained via Extension::id().
std::string extension_id_copy(extension_id);
if (profile_->GetTemplateURLModel())
profile_->GetTemplateURLModel()->UnregisterExtensionKeyword(extension);
// Unload before doing more cleanup to ensure that nothing is hanging on to
// any of these resources.
UnloadExtension(extension_id);
extension_prefs_->OnExtensionUninstalled(extension_id_copy, location,
external_uninstall);
// Tell the backend to start deleting installed extensions on the file thread.
if (Extension::LOAD != location) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableFunction(
&extension_file_util::UninstallExtension,
install_directory_,
extension_id_copy));
}
ClearExtensionData(extension_url);
// Notify interested parties that we've uninstalled this extension.
NotificationService::current()->Notify(
NotificationType::EXTENSION_UNINSTALLED,
Source<Profile>(profile_),
Details<UninstalledExtensionInfo>(&uninstalled_extension_info));
}
void ExtensionsService::ClearExtensionData(const GURL& extension_url) {
scoped_refptr<ExtensionDataDeleter> deleter(
new ExtensionDataDeleter(profile_, extension_url));
deleter->StartDeleting();
}
void ExtensionsService::EnableExtension(const std::string& extension_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
const Extension* extension =
GetExtensionByIdInternal(extension_id, false, true);
if (!extension)
return;
extension_prefs_->SetExtensionState(extension, Extension::ENABLED);
// Move it over to the enabled list.
extensions_.push_back(make_scoped_refptr(extension));
ExtensionList::iterator iter = std::find(disabled_extensions_.begin(),
disabled_extensions_.end(),
extension);
disabled_extensions_.erase(iter);
// Make sure any browser action contained within it is not hidden.
extension_prefs_->SetBrowserActionVisibility(extension, true);
ExtensionDOMUI::RegisterChromeURLOverrides(profile_,
extension->GetChromeURLOverrides());
NotifyExtensionLoaded(extension);
UpdateActiveExtensionsInCrashReporter();
}
void ExtensionsService::DisableExtension(const std::string& extension_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
const Extension* extension =
GetExtensionByIdInternal(extension_id, true, false);
// The extension may have been disabled already.
if (!extension)
return;
extension_prefs_->SetExtensionState(extension, Extension::DISABLED);
// Move it over to the disabled list.
disabled_extensions_.push_back(make_scoped_refptr(extension));
ExtensionList::iterator iter = std::find(extensions_.begin(),
extensions_.end(),
extension);
extensions_.erase(iter);
ExtensionDOMUI::UnregisterChromeURLOverrides(profile_,
extension->GetChromeURLOverrides());
NotifyExtensionUnloaded(extension);
UpdateActiveExtensionsInCrashReporter();
}
void ExtensionsService::GrantPermissions(const Extension* extension) {
CHECK(extension);
// We only maintain the granted permissions prefs for INTERNAL extensions.
CHECK(extension->location() == Extension::INTERNAL);
ExtensionExtent effective_hosts = extension->GetEffectiveHostPermissions();
extension_prefs_->AddGrantedPermissions(extension->id(),
extension->HasFullPermissions(),
extension->api_permissions(),
effective_hosts);
}
void ExtensionsService::GrantPermissionsAndEnableExtension(
const Extension* extension) {
CHECK(extension);
GrantPermissions(extension);
extension_prefs_->SetDidExtensionEscalatePermissions(extension, false);
EnableExtension(extension->id());
}
void ExtensionsService::LoadExtension(const FilePath& extension_path) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
backend_.get(),
&ExtensionsServiceBackend::LoadSingleExtension,
extension_path, scoped_refptr<ExtensionsService>(this)));
}
void ExtensionsService::LoadComponentExtensions() {
for (RegisteredComponentExtensions::iterator it =
component_extension_manifests_.begin();
it != component_extension_manifests_.end(); ++it) {
JSONStringValueSerializer serializer(it->manifest);
scoped_ptr<Value> manifest(serializer.Deserialize(NULL, NULL));
if (!manifest.get()) {
DLOG(ERROR) << "Failed to parse manifest for extension";
continue;
}
std::string error;
scoped_refptr<const Extension> extension(Extension::Create(
it->root_directory,
Extension::COMPONENT,
*static_cast<DictionaryValue*>(manifest.get()),
true, // require key
&error));
if (!extension.get()) {
NOTREACHED() << error;
return;
}
OnExtensionLoaded(extension);
}
}
void ExtensionsService::LoadAllExtensions() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
base::TimeTicks start_time = base::TimeTicks::Now();
// Load any component extensions.
LoadComponentExtensions();
// Load the previously installed extensions.
scoped_ptr<ExtensionPrefs::ExtensionsInfo> extensions_info(
extension_prefs_->GetInstalledExtensionsInfo());
std::vector<int> reload_reason_counts(NUM_MANIFEST_RELOAD_REASONS, 0);
bool should_write_prefs = false;
for (size_t i = 0; i < extensions_info->size(); ++i) {
ExtensionInfo* info = extensions_info->at(i).get();
ManifestReloadReason reload_reason = ShouldReloadExtensionManifest(*info);
++reload_reason_counts[reload_reason];
UMA_HISTOGRAM_ENUMERATION("Extensions.ManifestReloadEnumValue",
reload_reason, 100);
if (reload_reason != NOT_NEEDED) {
// Reloading and extension reads files from disk. We do this on the
// UI thread because reloads should be very rare, and the complexity
// added by delaying the time when the extensions service knows about
// all extensions is significant. See crbug.com/37548 for details.
// |allow_io| disables tests that file operations run on the file
// thread.
base::ThreadRestrictions::ScopedAllowIO allow_io;
std::string error;
scoped_refptr<const Extension> extension(
extension_file_util::LoadExtension(
info->extension_path, info->extension_location, false, &error));
if (extension.get()) {
extensions_info->at(i)->extension_manifest.reset(
static_cast<DictionaryValue*>(
extension->manifest_value()->DeepCopy()));
should_write_prefs = true;
}
}
}
for (size_t i = 0; i < extensions_info->size(); ++i) {
LoadInstalledExtension(*extensions_info->at(i), should_write_prefs);
}
OnLoadedInstalledExtensions();
// The histograms Extensions.ManifestReload* allow us to validate
// the assumption that reloading manifest is a rare event.
UMA_HISTOGRAM_COUNTS_100("Extensions.ManifestReloadNotNeeded",
reload_reason_counts[NOT_NEEDED]);
UMA_HISTOGRAM_COUNTS_100("Extensions.ManifestReloadUnpackedDir",
reload_reason_counts[UNPACKED_DIR]);
UMA_HISTOGRAM_COUNTS_100("Extensions.ManifestReloadNeedsRelocalization",
reload_reason_counts[NEEDS_RELOCALIZATION]);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadAll", extensions_.size());
UMA_HISTOGRAM_COUNTS_100("Extensions.Disabled", disabled_extensions_.size());
UMA_HISTOGRAM_TIMES("Extensions.LoadAllTime",
base::TimeTicks::Now() - start_time);
int app_count = 0;
int hosted_app_count = 0;
int packaged_app_count = 0;
int user_script_count = 0;
int extension_count = 0;
int theme_count = 0;
int external_count = 0;
int page_action_count = 0;
int browser_action_count = 0;
ExtensionList::iterator ex;
for (ex = extensions_.begin(); ex != extensions_.end(); ++ex) {
Extension::Location location = (*ex)->location();
Extension::HistogramType type = (*ex)->GetHistogramType();
if ((*ex)->is_app()) {
UMA_HISTOGRAM_ENUMERATION("Extensions.AppLocation",
location, 100);
} else if (type == Extension::TYPE_EXTENSION) {
UMA_HISTOGRAM_ENUMERATION("Extensions.ExtensionLocation",
location, 100);
}
// Don't count component extensions, since they are only extensions as an
// implementation detail.
if (location == Extension::COMPONENT)
continue;
// Don't count unpacked extensions, since they're a developer-specific
// feature.
if (location == Extension::LOAD)
continue;
// Using an enumeration shows us the total installed ratio across all users.
// Using the totals per user at each startup tells us the distribution of
// usage for each user (e.g. 40% of users have at least one app installed).
UMA_HISTOGRAM_ENUMERATION("Extensions.LoadType", type, 100);
switch (type) {
case Extension::TYPE_THEME:
++theme_count;
break;
case Extension::TYPE_USER_SCRIPT:
++user_script_count;
break;
case Extension::TYPE_HOSTED_APP:
++app_count;
++hosted_app_count;
break;
case Extension::TYPE_PACKAGED_APP:
++app_count;
++packaged_app_count;
break;
case Extension::TYPE_EXTENSION:
default:
++extension_count;
break;
}
if (Extension::IsExternalLocation(location))
++external_count;
if ((*ex)->page_action() != NULL)
++page_action_count;
if ((*ex)->browser_action() != NULL)
++browser_action_count;
}
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadApp", app_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadHostedApp", hosted_app_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadPackagedApp", packaged_app_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadExtension", extension_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadUserScript", user_script_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadTheme", theme_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadExternal", external_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadPageAction", page_action_count);
UMA_HISTOGRAM_COUNTS_100("Extensions.LoadBrowserAction",
browser_action_count);
}
void ExtensionsService::LoadInstalledExtension(const ExtensionInfo& info,
bool write_to_prefs) {
std::string error;
scoped_refptr<const Extension> extension(NULL);
if (!extension_prefs_->IsExtensionAllowedByPolicy(info.extension_id)) {
error = errors::kDisabledByPolicy;
} else if (info.extension_manifest.get()) {
bool require_key = info.extension_location != Extension::LOAD;
extension = Extension::Create(
info.extension_path, info.extension_location, *info.extension_manifest,
require_key, &error);
} else {
error = errors::kManifestUnreadable;
}
if (!extension) {
ReportExtensionLoadError(info.extension_path,
error,
NotificationType::EXTENSION_INSTALL_ERROR,
false);
return;
}
if (write_to_prefs)
extension_prefs_->UpdateManifest(extension);
OnExtensionLoaded(extension);
if (Extension::IsExternalLocation(info.extension_location)) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
backend_.get(),
&ExtensionsServiceBackend::CheckExternalUninstall,
scoped_refptr<ExtensionsService>(this),
info.extension_id));
}
}
void ExtensionsService::NotifyExtensionLoaded(const Extension* extension) {
// The ChromeURLRequestContexts 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.
if (profile_) {
profile_->RegisterExtensionWithRequestContexts(extension);
// Check if this permission requires unlimited storage quota
if (extension->HasApiPermission(Extension::kUnlimitedStoragePermission))
GrantUnlimitedStorage(extension);
// If the extension is an app, protect its local storage from
// "Clear browsing data."
if (extension->is_app())
GrantProtectedStorage(extension);
}
NotificationService::current()->Notify(
NotificationType::EXTENSION_LOADED,
Source<Profile>(profile_),
Details<const Extension>(extension));
}
void ExtensionsService::NotifyExtensionUnloaded(const Extension* extension) {
NotificationService::current()->Notify(
NotificationType::EXTENSION_UNLOADED,
Source<Profile>(profile_),
Details<const Extension>(extension));
if (profile_) {
profile_->UnregisterExtensionWithRequestContexts(extension);
// Check if this permission required unlimited storage quota, reset its
// in-memory quota.
if (extension->HasApiPermission(Extension::kUnlimitedStoragePermission))
RevokeUnlimitedStorage(extension);
// If this is an app, then stop protecting its storage so it can be deleted.
if (extension->is_app())
RevokeProtectedStorage(extension);
}
}
void ExtensionsService::GrantProtectedStorage(const Extension* extension) {
DCHECK(extension->is_app()) << "Only Apps are allowed protected storage.";
std::vector<GURL> origins;
GetExplicitOriginsInExtent(extension, &origins);
for (size_t i = 0; i < origins.size(); ++i)
++protected_storage_map_[origins[i]];
}
void ExtensionsService::RevokeProtectedStorage(const Extension* extension) {
DCHECK(extension->is_app()) << "Attempting to revoke protected storage from "
<< " a non-app extension.";
std::vector<GURL> origins;
GetExplicitOriginsInExtent(extension, &origins);
for (size_t i = 0; i < origins.size(); ++i) {
const GURL& origin = origins[i];
DCHECK(protected_storage_map_[origin] > 0);
if (--protected_storage_map_[origin] <= 0)
protected_storage_map_.erase(origin);
}
}
void ExtensionsService::GrantUnlimitedStorage(const Extension* extension) {
DCHECK(extension->HasApiPermission(Extension::kUnlimitedStoragePermission));
std::vector<GURL> origins;
GetExplicitOriginsInExtent(extension, &origins);
origins.push_back(extension->url());
for (size_t i = 0; i < origins.size(); ++i) {
const GURL& origin = origins[i];
if (++unlimited_storage_map_[origin] == 1) {
string16 origin_identifier =
webkit_database::DatabaseUtil::GetOriginIdentifier(origin);
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
profile_->GetDatabaseTracker(),
&webkit_database::DatabaseTracker::SetOriginQuotaInMemory,
origin_identifier,
kint64max));
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
profile_->GetAppCacheService(),
&ChromeAppCacheService::SetOriginQuotaInMemory,
origin,
kint64max));
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
profile_->GetFileSystemContext(),
&BrowserFileSystemContext::SetOriginQuotaUnlimited,
origin));
}
}
}
void ExtensionsService::RevokeUnlimitedStorage(const Extension* extension) {
DCHECK(extension->HasApiPermission(Extension::kUnlimitedStoragePermission));
std::vector<GURL> origins;
GetExplicitOriginsInExtent(extension, &origins);
origins.push_back(extension->url());
for (size_t i = 0; i < origins.size(); ++i) {
const GURL& origin = origins[i];
DCHECK(unlimited_storage_map_[origin] > 0);
if (--unlimited_storage_map_[origin] == 0) {
unlimited_storage_map_.erase(origin);
string16 origin_identifier =
webkit_database::DatabaseUtil::GetOriginIdentifier(origin);
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
profile_->GetDatabaseTracker(),
&webkit_database::DatabaseTracker::ResetOriginQuotaInMemory,
origin_identifier));
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
profile_->GetAppCacheService(),
&ChromeAppCacheService::ResetOriginQuotaInMemory,
origin));
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
profile_->GetFileSystemContext(),
&BrowserFileSystemContext::ResetOriginQuotaUnlimited,
origin));
}
}
}
void ExtensionsService::UpdateExtensionBlacklist(
const std::vector<std::string>& blacklist) {
// Use this set to indicate if an extension in the blacklist has been used.
std::set<std::string> blacklist_set;
for (unsigned int i = 0; i < blacklist.size(); ++i) {
if (Extension::IdIsValid(blacklist[i])) {
blacklist_set.insert(blacklist[i]);
}
}
extension_prefs_->UpdateBlacklist(blacklist_set);
std::vector<std::string> to_be_removed;
// Loop current extensions, unload installed extensions.
for (ExtensionList::const_iterator iter = extensions_.begin();
iter != extensions_.end(); ++iter) {
const Extension* extension = (*iter);
if (blacklist_set.find(extension->id()) != blacklist_set.end()) {
to_be_removed.push_back(extension->id());
}
}
// UnloadExtension will change the extensions_ list. So, we should
// call it outside the iterator loop.
for (unsigned int i = 0; i < to_be_removed.size(); ++i) {
UnloadExtension(to_be_removed[i]);
}
}
void ExtensionsService::DestroyingProfile() {
pref_change_registrar_.RemoveAll();
profile_ = NULL;
toolbar_model_.DestroyingProfile();
}
void ExtensionsService::CheckAdminBlacklist() {
std::vector<std::string> to_be_removed;
// Loop through extensions list, unload installed extensions.
for (ExtensionList::const_iterator iter = extensions_.begin();
iter != extensions_.end(); ++iter) {
const Extension* extension = (*iter);
if (!extension_prefs_->IsExtensionAllowedByPolicy(extension->id()))
to_be_removed.push_back(extension->id());
}
// UnloadExtension will change the extensions_ list. So, we should
// call it outside the iterator loop.
for (unsigned int i = 0; i < to_be_removed.size(); ++i)
UnloadExtension(to_be_removed[i]);
}
bool ExtensionsService::IsIncognitoEnabled(const Extension* extension) {
// If this is a component extension we always allow it to work in incognito
// mode.
if (extension->location() == Extension::COMPONENT)
return true;
// Check the prefs.
return extension_prefs_->IsIncognitoEnabled(extension->id());
}
void ExtensionsService::SetIsIncognitoEnabled(const Extension* extension,
bool enabled) {
extension_prefs_->SetIsIncognitoEnabled(extension->id(), enabled);
// Broadcast unloaded and loaded events to update browser state. Only bother
// if the extension is actually enabled, since there is no UI otherwise.
bool is_enabled = std::find(extensions_.begin(), extensions_.end(),
extension) != extensions_.end();
if (is_enabled) {
NotifyExtensionUnloaded(extension);
NotifyExtensionLoaded(extension);
}
}
bool ExtensionsService::CanCrossIncognito(const Extension* extension) {
// We allow the extension to see events and data from another profile iff it
// uses "spanning" behavior and it has incognito access. "split" mode
// extensions only see events for a matching profile.
return IsIncognitoEnabled(extension) && !extension->incognito_split_mode();
}
bool ExtensionsService::AllowFileAccess(const Extension* extension) {
return (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableExtensionsFileAccessCheck) ||
extension_prefs_->AllowFileAccess(extension->id()));
}
void ExtensionsService::SetAllowFileAccess(const Extension* extension,
bool allow) {
extension_prefs_->SetAllowFileAccess(extension->id(), allow);
NotificationService::current()->Notify(
NotificationType::EXTENSION_USER_SCRIPTS_UPDATED,
Source<Profile>(profile_),
Details<const Extension>(extension));
}
bool ExtensionsService::GetBrowserActionVisibility(const Extension* extension) {
return extension_prefs_->GetBrowserActionVisibility(extension);
}
void ExtensionsService::SetBrowserActionVisibility(const Extension* extension,
bool visible) {
extension_prefs_->SetBrowserActionVisibility(extension, visible);
}
void ExtensionsService::CheckForExternalUpdates() {
// This installs or updates externally provided extensions.
// TODO(aa): Why pass this list into the provider, why not just filter it
// later?
std::set<std::string> killed_extensions;
extension_prefs_->GetKilledExtensionIds(&killed_extensions);
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
backend_.get(), &ExtensionsServiceBackend::CheckForExternalUpdates,
killed_extensions, scoped_refptr<ExtensionsService>(this)));
}
void ExtensionsService::UpdateExternalPolicyExtensionProvider() {
const ListValue* list_pref =
profile_->GetPrefs()->GetList(prefs::kExtensionInstallForceList);
ListValue* list_copy = NULL;
if (list_pref)
list_copy = static_cast<ListValue*>(list_pref->DeepCopy());
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
backend_.get(),
&ExtensionsServiceBackend::UpdateExternalPolicyExtensionProvider,
scoped_refptr<RefCountedList>(
new RefCountedList(list_copy))));
}
void ExtensionsService::UnloadExtension(const std::string& extension_id) {
// Make sure the extension gets deleted after we return from this function.
scoped_refptr<const Extension> extension(
GetExtensionByIdInternal(extension_id, true, true));
// This method can be called via PostTask, so the extension may have been
// unloaded by the time this runs.
if (!extension)
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.
disabled_extension_paths_.erase(extension->id());
// Clean up runtime data.
extension_runtime_data_.erase(extension_id);
ExtensionDOMUI::UnregisterChromeURLOverrides(profile_,
extension->GetChromeURLOverrides());
ExtensionList::iterator iter = std::find(disabled_extensions_.begin(),
disabled_extensions_.end(),
extension.get());
if (iter != disabled_extensions_.end()) {
disabled_extensions_.erase(iter);
NotificationService::current()->Notify(
NotificationType::EXTENSION_UNLOADED_DISABLED,
Source<Profile>(profile_),
Details<const Extension>(extension.get()));
return;
}
iter = std::find(extensions_.begin(), extensions_.end(), extension.get());
// Remove the extension from our list.
extensions_.erase(iter);
NotifyExtensionUnloaded(extension.get());
UpdateActiveExtensionsInCrashReporter();
}
void ExtensionsService::UnloadAllExtensions() {
extensions_.clear();
disabled_extensions_.clear();
extension_runtime_data_.clear();
// 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, and UnloadAll is just part of shutdown.
}
void ExtensionsService::ReloadExtensions() {
UnloadAllExtensions();
LoadAllExtensions();
}
void ExtensionsService::GarbageCollectExtensions() {
if (extension_prefs_->pref_service()->read_only())
return;
scoped_ptr<ExtensionPrefs::ExtensionsInfo> info(
extension_prefs_->GetInstalledExtensionsInfo());
std::map<std::string, FilePath> extension_paths;
for (size_t i = 0; i < info->size(); ++i)
extension_paths[info->at(i)->extension_id] = info->at(i)->extension_path;
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableFunction(
&extension_file_util::GarbageCollectExtensions, install_directory_,
extension_paths));
// Also garbage-collect themes. We check |profile_| to be
// defensive; in the future, we may call GarbageCollectExtensions()
// from somewhere other than Init() (e.g., in a timer).
if (profile_) {
profile_->GetThemeProvider()->RemoveUnusedThemes();
}
}
void ExtensionsService::OnLoadedInstalledExtensions() {
if (updater_.get()) {
updater_->Start();
}
ready_ = true;
NotificationService::current()->Notify(
NotificationType::EXTENSIONS_READY,
Source<Profile>(profile_),
NotificationService::NoDetails());
}
void ExtensionsService::OnExtensionLoaded(const Extension* extension) {
// Ensure extension is deleted unless we transfer ownership.
scoped_refptr<const Extension> scoped_extension(extension);
// The extension is now loaded, remove its data from unloaded extension map.
unloaded_extension_paths_.erase(extension->id());
// If the extension was disabled for a reload, then enable it.
if (disabled_extension_paths_.erase(extension->id()) > 0)
EnableExtension(extension->id());
// Check if the extension's privileges have changed and disable the extension
// if necessary.
DisableIfPrivilegeIncrease(extension);
switch (extension_prefs_->GetExtensionState(extension->id())) {
case Extension::ENABLED:
extensions_.push_back(scoped_extension);
NotifyExtensionLoaded(extension);
ExtensionDOMUI::RegisterChromeURLOverrides(
profile_, extension->GetChromeURLOverrides());
break;
case Extension::DISABLED:
disabled_extensions_.push_back(scoped_extension);
NotificationService::current()->Notify(
NotificationType::EXTENSION_UPDATE_DISABLED,
Source<Profile>(profile_),
Details<const Extension>(extension));
break;
default:
NOTREACHED();
break;
}
SetBeingUpgraded(extension, false);
UpdateActiveExtensionsInCrashReporter();
if (profile_->GetTemplateURLModel())
profile_->GetTemplateURLModel()->RegisterExtensionKeyword(extension);
// Load the icon for omnibox-enabled extensions so it will be ready to display
// in the URL bar.
if (!extension->omnibox_keyword().empty()) {
omnibox_popup_icon_manager_.LoadIcon(extension);
omnibox_icon_manager_.LoadIcon(extension);
}
}
void ExtensionsService::DisableIfPrivilegeIncrease(const Extension* 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.
const Extension* old = GetExtensionByIdInternal(extension->id(),
true, true);
bool granted_full_access;
std::set<std::string> granted_apis;
ExtensionExtent granted_extent;
bool is_extension_upgrade = old != NULL;
bool is_privilege_increase = false;
// We only record the granted permissions for INTERNAL extensions, since
// they can't silently increase privileges.
if (extension->location() == Extension::INTERNAL) {
// Add all the recognized permissions if the granted permissions list
// hasn't been initialized yet.
if (!extension_prefs_->GetGrantedPermissions(extension->id(),
&granted_full_access,
&granted_apis,
&granted_extent)) {
GrantPermissions(extension);
CHECK(extension_prefs_->GetGrantedPermissions(extension->id(),
&granted_full_access,
&granted_apis,
&granted_extent));
}
// 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 = Extension::IsPrivilegeIncrease(
granted_full_access, granted_apis, granted_extent, extension);
}
if (is_extension_upgrade) {
// CrxInstaller should have guaranteed that we aren't downgrading.
CHECK(extension->version()->CompareTo(*(old->version())) >= 0);
// Extensions get upgraded if the privileges are allowed to increase or
// the privileges haven't increased.
if (!is_privilege_increase) {
SetBeingUpgraded(old, true);
SetBeingUpgraded(extension, true);
}
// To upgrade an extension in place, unload the old one and
// then load the new one.
UnloadExtension(old->id());
old = NULL;
}
// Extension has changed permissions significantly. Disable it. A
// notification should be sent by the caller.
if (is_privilege_increase) {
extension_prefs_->SetExtensionState(extension, Extension::DISABLED);
extension_prefs_->SetDidExtensionEscalatePermissions(extension, true);
}
}
void ExtensionsService::UpdateActiveExtensionsInCrashReporter() {
std::set<std::string> extension_ids;
for (size_t i = 0; i < extensions_.size(); ++i) {
if (!extensions_[i]->is_theme() &&
extensions_[i]->location() != Extension::COMPONENT)
extension_ids.insert(extensions_[i]->id());
}
child_process_logging::SetActiveExtensions(extension_ids);
}
void ExtensionsService::OnExtensionInstalled(const Extension* extension) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Ensure extension is deleted unless we transfer ownership.
scoped_refptr<const Extension> scoped_extension(extension);
Extension::State initial_state = Extension::DISABLED;
bool initial_enable_incognito = false;
PendingExtensionMap::iterator it =
pending_extensions_.find(extension->id());
if (it != pending_extensions_.end()) {
PendingExtensionInfo pending_extension_info = it->second;
PendingExtensionInfo::ExpectedCrxType expected_crx_type =
pending_extension_info.expected_crx_type;
bool is_from_sync = pending_extension_info.is_from_sync;
pending_extensions_.erase(it);
it = pending_extensions_.end();
// Set initial state from pending extension data.
PendingExtensionInfo::ExpectedCrxType actual_crx_type =
PendingExtensionInfo::EXTENSION;
if (extension->is_app())
actual_crx_type = PendingExtensionInfo::APP;
else if (extension->is_theme())
actual_crx_type = PendingExtensionInfo::THEME;
if (expected_crx_type != PendingExtensionInfo::UNKNOWN &&
expected_crx_type != actual_crx_type) {
LOG(WARNING)
<< "Not installing pending extension " << extension->id()
<< " with is_theme = " << extension->is_theme();
// Delete the extension directory since we're not going to
// load it.
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableFunction(&DeleteFileHelper, extension->path(), true));
return;
}
// If |extension| is not syncable, and was installed via sync, disallow
// the instanation.
//
// Themes are always allowed. Because they contain no active code, they
// are less of a risk than extensions.
//
// If |is_from_sync| is false, then the install was not initiated by sync,
// and this check should pass. Extensions that were installed from an
// update URL in external_extensions.json are an example. They are not
// syncable, because the user did not make an explicit choice to install
// them. However, they were installed through the update mechanism, so
// control must pass into this function.
//
// TODO(akalin): When we do apps sync, we have to work with its
// traits, too.
const browser_sync::ExtensionSyncTraits extension_sync_traits =
browser_sync::GetExtensionSyncTraits();
const browser_sync::ExtensionSyncTraits app_sync_traits =
browser_sync::GetAppSyncTraits();
// If an extension is a theme, we bypass the valid/syncable check
// as themes are harmless.
if (!extension->is_theme() && is_from_sync &&
!browser_sync::IsExtensionValidAndSyncable(
*extension, extension_sync_traits.allowed_extension_types) &&
!browser_sync::IsExtensionValidAndSyncable(
*extension, app_sync_traits.allowed_extension_types)) {
// We're an extension installed via sync that is unsyncable,
// i.e. we may have been syncable previously. We block these
// installs. We'll have to update the clause above if we decide
// to sync other extension-like things, like apps or user
// scripts.
//
// Note that this creates a small window where a user who tries
// to download/install an extension that is simultaneously
// installed via sync (and blocked) will find his download
// blocked.
//
// TODO(akalin): Remove this check once we've put in UI to
// approve synced extensions.
LOG(WARNING)
<< "Not installing invalid or unsyncable extension "
<< extension->id();
// Delete the extension directory since we're not going to
// load it.
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableFunction(&DeleteFileHelper, extension->path(), true));
return;
}
if (extension->is_theme()) {
DCHECK(pending_extension_info.enable_on_install);
initial_state = Extension::ENABLED;
DCHECK(!pending_extension_info.enable_incognito_on_install);
initial_enable_incognito = false;
} else {
initial_state =
pending_extension_info.enable_on_install ?
Extension::ENABLED : Extension::DISABLED;
initial_enable_incognito =
pending_extension_info.enable_incognito_on_install;
}
} else {
// Make sure we preserve enabled/disabled states.
Extension::State existing_state =
extension_prefs_->GetExtensionState(extension->id());
initial_state =
(existing_state == Extension::DISABLED) ?
Extension::DISABLED : Extension::ENABLED;
initial_enable_incognito =
extension_prefs_->IsIncognitoEnabled(extension->id());
}
UMA_HISTOGRAM_ENUMERATION("Extensions.InstallType",
extension->GetHistogramType(), 100);
ShownSectionsHandler::OnExtensionInstalled(profile_->GetPrefs(), extension);
extension_prefs_->OnExtensionInstalled(
extension, initial_state, initial_enable_incognito);
// Unpacked extensions start off with file access since they are a developer
// feature.
if (extension->location() == Extension::LOAD)
extension_prefs_->SetAllowFileAccess(extension->id(), true);
// If the extension is a theme, tell the profile (and therefore ThemeProvider)
// to apply it.
if (extension->is_theme()) {
NotificationService::current()->Notify(
NotificationType::THEME_INSTALLED,
Source<Profile>(profile_),
Details<const Extension>(extension));
} else {
NotificationService::current()->Notify(
NotificationType::EXTENSION_INSTALLED,
Source<Profile>(profile_),
Details<const Extension>(extension));
}
if (extension->is_app()) {
ExtensionIdSet installed_ids = GetAppIds();
installed_ids.insert(extension->id());
default_apps_.DidInstallApp(installed_ids);
}
// Transfer ownership of |extension| to OnExtensionLoaded.
OnExtensionLoaded(scoped_extension);
}
const Extension* ExtensionsService::GetExtensionByIdInternal(
const std::string& id, bool include_enabled, bool include_disabled) {
std::string lowercase_id = StringToLowerASCII(id);
if (include_enabled) {
for (ExtensionList::const_iterator iter = extensions_.begin();
iter != extensions_.end(); ++iter) {
if ((*iter)->id() == lowercase_id)
return *iter;
}
}
if (include_disabled) {
for (ExtensionList::const_iterator iter = disabled_extensions_.begin();
iter != disabled_extensions_.end(); ++iter) {
if ((*iter)->id() == lowercase_id)
return *iter;
}
}
return NULL;
}
const Extension* ExtensionsService::GetWebStoreApp() {
return GetExtensionById(extension_misc::kWebStoreAppId, false);
}
const Extension* ExtensionsService::GetExtensionByURL(const GURL& url) {
return url.scheme() != chrome::kExtensionScheme ? NULL :
GetExtensionById(url.host(), false);
}
const Extension* ExtensionsService::GetExtensionByWebExtent(const GURL& url) {
for (size_t i = 0; i < extensions_.size(); ++i) {
if (extensions_[i]->web_extent().ContainsURL(url))
return extensions_[i];
}
return NULL;
}
bool ExtensionsService::ExtensionBindingsAllowed(const GURL& url) {
// Allow bindings for all packaged extension.
if (GetExtensionByURL(url))
return true;
// Allow bindings for all component, hosted apps.
const Extension* extension = GetExtensionByWebExtent(url);
return (extension && extension->location() == Extension::COMPONENT);
}
const Extension* ExtensionsService::GetExtensionByOverlappingWebExtent(
const ExtensionExtent& extent) {
for (size_t i = 0; i < extensions_.size(); ++i) {
if (extensions_[i]->web_extent().OverlapsWith(extent))
return extensions_[i];
}
return NULL;
}
const SkBitmap& ExtensionsService::GetOmniboxIcon(
const std::string& extension_id) {
return omnibox_icon_manager_.GetIcon(extension_id);
}
const SkBitmap& ExtensionsService::GetOmniboxPopupIcon(
const std::string& extension_id) {
return omnibox_popup_icon_manager_.GetIcon(extension_id);
}
void ExtensionsService::ClearProvidersForTesting() {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
backend_.get(), &ExtensionsServiceBackend::ClearProvidersForTesting));
}
void ExtensionsService::AddProviderForTesting(
ExternalExtensionProvider* test_provider) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(
backend_.get(), &ExtensionsServiceBackend::AddProviderForTesting,
test_provider));
}
void ExtensionsService::OnExternalExtensionFileFound(
const std::string& id,
const std::string& version,
const FilePath& path,
Extension::Location location) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// 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);
scoped_ptr<Version> other(Version::GetVersionFromString(version));
if (existing) {
switch (existing->version()->CompareTo(*other)) {
case -1: // existing version is older, we should upgrade
break;
case 0: // existing version is same, do nothing
return;
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 << ". Keeping current version.";
return;
}
}
scoped_refptr<CrxInstaller> installer(
new CrxInstaller(this, // frontend
NULL)); // no client (silent install)
installer->set_install_source(location);
installer->set_expected_id(id);
installer->InstallCrx(path);
}
void ExtensionsService::ReportExtensionLoadError(
const FilePath& extension_path,
const std::string &error,
NotificationType type,
bool be_noisy) {
NotificationService* service = NotificationService::current();
service->Notify(type,
Source<Profile>(profile_),
Details<const std::string>(&error));
// TODO(port): note that this isn't guaranteed to work properly on Linux.
std::string path_str = WideToUTF8(extension_path.ToWStringHack());
std::string message = base::StringPrintf(
"Could not load extension from '%s'. %s",
path_str.c_str(), error.c_str());
ExtensionErrorReporter::GetInstance()->ReportError(message, be_noisy);
}
void ExtensionsService::DidCreateRenderViewForBackgroundPage(
ExtensionHost* host) {
OrphanedDevTools::iterator iter =
orphaned_dev_tools_.find(host->extension()->id());
if (iter == orphaned_dev_tools_.end())
return;
DevToolsManager::GetInstance()->AttachClientHost(
iter->second, host->render_view_host());
orphaned_dev_tools_.erase(iter);
}
void ExtensionsService::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
switch (type.value) {
case NotificationType::EXTENSION_PROCESS_TERMINATED: {
if (profile_ != Source<Profile>(source).ptr()->GetOriginalProfile())
break;
ExtensionHost* host = Details<ExtensionHost>(details).ptr();
// Unload the entire extension. 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.
MessageLoop::current()->PostTask(FROM_HERE,
NewRunnableMethod(this, &ExtensionsService::UnloadExtension,
host->extension()->id()));
break;
}
case NotificationType::PREF_CHANGED: {
std::string* pref_name = Details<std::string>(details).ptr();
if (*pref_name == prefs::kExtensionInstallAllowList ||
*pref_name == prefs::kExtensionInstallDenyList) {
CheckAdminBlacklist();
} else if (*pref_name == prefs::kExtensionInstallForceList) {
UpdateExternalPolicyExtensionProvider();
CheckForExternalUpdates();
// TODO(gfeher): Also check for external extensions that can be
// uninstalled because they were removed from the pref.
// (crbug.com/63667)
} else {
NOTREACHED() << "Unexpected preference name.";
}
break;
}
default:
NOTREACHED() << "Unexpected notification type.";
}
}
bool ExtensionsService::HasApps() const {
return !GetAppIds().empty();
}
ExtensionIdSet ExtensionsService::GetAppIds() const {
ExtensionIdSet result;
for (ExtensionList::const_iterator it = extensions_.begin();
it != extensions_.end(); ++it) {
if ((*it)->is_app() && (*it)->location() != Extension::COMPONENT)
result.insert((*it)->id());
}
return result;
}
bool ExtensionsService::IsBackgroundPageReady(const Extension* extension) {
return (extension->background_url().is_empty() ||
extension_runtime_data_[extension->id()].background_page_ready);
}
void ExtensionsService::SetBackgroundPageReady(const Extension* extension) {
DCHECK(!extension->background_url().is_empty());
extension_runtime_data_[extension->id()].background_page_ready = true;
NotificationService::current()->Notify(
NotificationType::EXTENSION_BACKGROUND_PAGE_READY,
Source<const Extension>(extension),
NotificationService::NoDetails());
}
bool ExtensionsService::IsBeingUpgraded(const Extension* extension) {
return extension_runtime_data_[extension->id()].being_upgraded;
}
void ExtensionsService::SetBeingUpgraded(const Extension* extension,
bool value) {
extension_runtime_data_[extension->id()].being_upgraded = value;
}
PropertyBag* ExtensionsService::GetPropertyBag(const Extension* extension) {
return &extension_runtime_data_[extension->id()].property_bag;
}