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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/unpacked_installer.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/file_util.h"
#include "chrome/browser/extensions/extension_install_ui.h"
#include "chrome/browser/extensions/extension_prefs.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/permissions_updater.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_file_util.h"
#include "chrome/common/string_ordinal.h"
using content::BrowserThread;
namespace {
const char kUnpackedExtensionsBlacklistedError[] =
"Loading of unpacked extensions is disabled by the administrator.";
// Manages an ExtensionInstallUI for a particular extension.
class SimpleExtensionLoadPrompt : public ExtensionInstallUI::Delegate {
public:
SimpleExtensionLoadPrompt(Profile* profile,
base::WeakPtr<ExtensionService> extension_service,
const Extension* extension);
~SimpleExtensionLoadPrompt();
void ShowPrompt();
// ExtensionInstallUI::Delegate
virtual void InstallUIProceed() OVERRIDE;
virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
private:
base::WeakPtr<ExtensionService> service_weak_;
scoped_ptr<ExtensionInstallUI> install_ui_;
scoped_refptr<const Extension> extension_;
};
SimpleExtensionLoadPrompt::SimpleExtensionLoadPrompt(
Profile* profile,
base::WeakPtr<ExtensionService> extension_service,
const Extension* extension)
: service_weak_(extension_service),
install_ui_(new ExtensionInstallUI(profile)),
extension_(extension) {
}
SimpleExtensionLoadPrompt::~SimpleExtensionLoadPrompt() {
}
void SimpleExtensionLoadPrompt::ShowPrompt() {
install_ui_->ConfirmInstall(this, extension_);
}
void SimpleExtensionLoadPrompt::InstallUIProceed() {
if (service_weak_.get()) {
extensions::PermissionsUpdater perms_updater(service_weak_->profile());
perms_updater.GrantActivePermissions(extension_);
service_weak_->OnExtensionInstalled(
extension_, false, StringOrdinal()); // Not from web store.
}
delete this;
}
void SimpleExtensionLoadPrompt::InstallUIAbort(bool user_initiated) {
delete this;
}
} // namespace
namespace extensions {
// static
scoped_refptr<UnpackedInstaller> UnpackedInstaller::Create(
ExtensionService* extension_service) {
return scoped_refptr<UnpackedInstaller>(
new UnpackedInstaller(extension_service));
}
UnpackedInstaller::UnpackedInstaller(ExtensionService* extension_service)
: service_weak_(extension_service->AsWeakPtr()),
prompt_for_plugins_(true) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
UnpackedInstaller::~UnpackedInstaller() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI) ||
BrowserThread::CurrentlyOn(BrowserThread::FILE));
}
void UnpackedInstaller::Load(const FilePath& path_in) {
extension_path_ = path_in;
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
base::Bind(&UnpackedInstaller::GetAbsolutePath, this));
}
void UnpackedInstaller::LoadFromCommandLine(const FilePath& path_in) {
if (!service_weak_.get())
return;
// Load extensions from the command line synchronously to avoid a race
// between extension loading and loading an URL from the command line.
base::ThreadRestrictions::ScopedAllowIO allow_io;
extension_path_ = path_in;
file_util::AbsolutePath(&extension_path_);
if (!IsLoadingUnpackedAllowed()) {
ReportExtensionLoadError(kUnpackedExtensionsBlacklistedError);
return;
}
std::string id = Extension::GenerateIdForPath(extension_path_);
bool allow_file_access =
Extension::ShouldAlwaysAllowFileAccess(Extension::LOAD);
if (service_weak_->extension_prefs()->HasAllowFileAccessSetting(id))
allow_file_access = service_weak_->extension_prefs()->AllowFileAccess(id);
int flags = Extension::REQUIRE_MODERN_MANIFEST_VERSION;
if (allow_file_access)
flags |= Extension::ALLOW_FILE_ACCESS;
if (Extension::ShouldDoStrictErrorChecking(Extension::LOAD))
flags |= Extension::STRICT_ERROR_CHECKS;
std::string error;
scoped_refptr<const Extension> extension(extension_file_util::LoadExtension(
extension_path_,
Extension::LOAD,
flags,
&error));
if (!extension) {
ReportExtensionLoadError(error);
return;
}
OnLoaded(extension);
}
bool UnpackedInstaller::IsLoadingUnpackedAllowed() const {
if (!service_weak_)
return true;
// If there is a "*" in the extension blacklist, then no extensions should be
// allowed at all (except explicitly whitelisted extensions).
return !service_weak_->extension_prefs()->ExtensionsBlacklistedByDefault();
}
void UnpackedInstaller::GetAbsolutePath() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
file_util::AbsolutePath(&extension_path_);
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(&UnpackedInstaller::CheckExtensionFileAccess, this));
}
void UnpackedInstaller::CheckExtensionFileAccess() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!service_weak_)
return;
if (!IsLoadingUnpackedAllowed()) {
ReportExtensionLoadError(kUnpackedExtensionsBlacklistedError);
return;
}
std::string id = Extension::GenerateIdForPath(extension_path_);
// Unpacked extensions default to allowing file access, but if that has been
// overridden, don't reset the value.
bool allow_file_access =
Extension::ShouldAlwaysAllowFileAccess(Extension::LOAD);
if (service_weak_->extension_prefs()->HasAllowFileAccessSetting(id))
allow_file_access = service_weak_->extension_prefs()->AllowFileAccess(id);
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
base::Bind(
&UnpackedInstaller::LoadWithFileAccess,
this, allow_file_access));
}
void UnpackedInstaller::LoadWithFileAccess(bool allow_file_access) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
int flags = Extension::REQUIRE_MODERN_MANIFEST_VERSION;
if (allow_file_access)
flags |= Extension::ALLOW_FILE_ACCESS;
if (Extension::ShouldDoStrictErrorChecking(Extension::LOAD))
flags |= Extension::STRICT_ERROR_CHECKS;
std::string error;
scoped_refptr<const Extension> extension(extension_file_util::LoadExtension(
extension_path_,
Extension::LOAD,
flags,
&error));
if (!extension) {
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(
&UnpackedInstaller::ReportExtensionLoadError,
this, error));
return;
}
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(
&UnpackedInstaller::OnLoaded,
this, extension));
}
void UnpackedInstaller::ReportExtensionLoadError(const std::string &error) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!service_weak_.get())
return;
service_weak_->ReportExtensionLoadError(extension_path_, error, true);
}
void UnpackedInstaller::OnLoaded(
const scoped_refptr<const Extension>& extension) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!service_weak_.get())
return;
const ExtensionSet* disabled_extensions =
service_weak_->disabled_extensions();
if (service_weak_->show_extensions_prompts() &&
prompt_for_plugins_ &&
!extension->plugins().empty() &&
!disabled_extensions->Contains(extension->id())) {
SimpleExtensionLoadPrompt* prompt = new SimpleExtensionLoadPrompt(
service_weak_->profile(),
service_weak_,
extension);
prompt->ShowPrompt();
return; // continues in SimpleExtensionLoadPrompt::InstallUI*
}
PermissionsUpdater perms_updater(service_weak_->profile());
perms_updater.GrantActivePermissions(extension);
service_weak_->OnExtensionInstalled(extension,
false, // Not from web store.
StringOrdinal());
}
} // namespace extensions
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