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// Copyright 2014 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_reenabler.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/webstore_data_fetcher.h"
#include "chrome/browser/extensions/webstore_inline_installer.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/extension.h"
namespace extensions {
ExtensionReenabler::~ExtensionReenabler() {
if (!finished_)
Finish(ABORTED);
}
// static
std::unique_ptr<ExtensionReenabler> ExtensionReenabler::PromptForReenable(
const scoped_refptr<const Extension>& extension,
content::BrowserContext* browser_context,
content::WebContents* web_contents,
const GURL& referrer_url,
const Callback& callback) {
#if DCHECK_IS_ON()
// We should only try to reenable an extension that is, in fact, disabled.
DCHECK(ExtensionRegistry::Get(browser_context)->disabled_extensions().
Contains(extension->id()));
// Currently, this should only be used for extensions that are disabled due
// to a permissions increase.
int disable_reasons =
ExtensionPrefs::Get(browser_context)->GetDisableReasons(extension->id());
DCHECK_NE(0, disable_reasons & Extension::DISABLE_PERMISSIONS_INCREASE);
#endif // DCHECK_IS_ON()
return base::WrapUnique(new ExtensionReenabler(
extension, browser_context, referrer_url, callback, web_contents,
ExtensionInstallPrompt::GetDefaultShowDialogCallback()));
}
// static
std::unique_ptr<ExtensionReenabler>
ExtensionReenabler::PromptForReenableWithCallbackForTest(
const scoped_refptr<const Extension>& extension,
content::BrowserContext* browser_context,
const Callback& callback,
const ExtensionInstallPrompt::ShowDialogCallback& show_dialog_callback) {
return base::WrapUnique(new ExtensionReenabler(extension, browser_context,
GURL(), callback, nullptr,
show_dialog_callback));
}
ExtensionReenabler::ExtensionReenabler(
const scoped_refptr<const Extension>& extension,
content::BrowserContext* browser_context,
const GURL& referrer_url,
const Callback& callback,
content::WebContents* web_contents,
const ExtensionInstallPrompt::ShowDialogCallback& show_dialog_callback)
: extension_(extension),
browser_context_(browser_context),
referrer_url_(referrer_url),
callback_(callback),
show_dialog_callback_(show_dialog_callback),
finished_(false),
registry_observer_(this),
weak_factory_(this) {
DCHECK(extension_.get());
registry_observer_.Add(ExtensionRegistry::Get(browser_context_));
install_prompt_.reset(new ExtensionInstallPrompt(web_contents));
// If we have a non-empty referrer, then we have to validate that it's a valid
// url for the extension.
if (!referrer_url_.is_empty()) {
webstore_data_fetcher_.reset(new WebstoreDataFetcher(
this,
content::BrowserContext::GetDefaultStoragePartition(browser_context_)->
GetURLRequestContext(),
referrer_url_,
extension->id()));
webstore_data_fetcher_->Start();
} else {
ExtensionInstallPrompt::PromptType type =
ExtensionInstallPrompt::GetReEnablePromptTypeForExtension(
browser_context, extension.get());
install_prompt_->ShowDialog(
base::Bind(&ExtensionReenabler::OnInstallPromptDone,
weak_factory_.GetWeakPtr()),
extension.get(), nullptr,
base::MakeUnique<ExtensionInstallPrompt::Prompt>(type),
show_dialog_callback_);
}
}
void ExtensionReenabler::OnInstallPromptDone(
ExtensionInstallPrompt::Result install_result) {
ReenableResult result = ABORTED;
switch (install_result) {
case ExtensionInstallPrompt::Result::ACCEPTED: {
// Stop observing - we don't want to see our own enablement.
registry_observer_.RemoveAll();
ExtensionService* extension_service =
ExtensionSystem::Get(browser_context_)->extension_service();
if (extension_service->browser_terminating()) {
result = ABORTED;
} else {
extension_service->GrantPermissionsAndEnableExtension(extension_.get());
// The re-enable could have failed if the extension is disallowed by
// policy.
bool enabled = ExtensionRegistry::Get(browser_context_)
->enabled_extensions()
.GetByID(extension_->id()) != nullptr;
result = enabled ? REENABLE_SUCCESS : NOT_ALLOWED;
}
break;
}
case ExtensionInstallPrompt::Result::USER_CANCELED:
result = USER_CANCELED;
break;
case ExtensionInstallPrompt::Result::ABORTED:
result = ABORTED;
break;
}
Finish(result);
}
void ExtensionReenabler::OnExtensionLoaded(
content::BrowserContext* browser_context,
const Extension* extension) {
// If the user chose to manually re-enable the extension then, for all
// intents and purposes, this was a success.
if (extension == extension_.get())
Finish(REENABLE_SUCCESS);
}
void ExtensionReenabler::OnExtensionUninstalled(
content::BrowserContext* browser_context,
const Extension* extension,
UninstallReason reason) {
if (extension == extension_.get())
Finish(USER_CANCELED);
}
void ExtensionReenabler::OnWebstoreRequestFailure() {
Finish(ABORTED);
}
void ExtensionReenabler::OnWebstoreResponseParseSuccess(
std::unique_ptr<base::DictionaryValue> webstore_data) {
DCHECK(!referrer_url_.is_empty());
std::string error;
if (!WebstoreInlineInstaller::IsRequestorPermitted(*webstore_data,
referrer_url_,
&error)) {
Finish(NOT_ALLOWED);
} else {
ExtensionInstallPrompt::PromptType type =
ExtensionInstallPrompt::GetReEnablePromptTypeForExtension(
browser_context_, extension_.get());
install_prompt_->ShowDialog(
base::Bind(&ExtensionReenabler::OnInstallPromptDone,
weak_factory_.GetWeakPtr()),
extension_.get(), nullptr,
base::MakeUnique<ExtensionInstallPrompt::Prompt>(type),
show_dialog_callback_);
}
}
void ExtensionReenabler::OnWebstoreResponseParseFailure(
const std::string& error) {
Finish(ABORTED);
}
void ExtensionReenabler::Finish(ReenableResult result) {
DCHECK(!finished_);
finished_ = true;
registry_observer_.RemoveAll();
callback_.Run(result);
}
} // namespace extensions
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