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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 "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/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
scoped_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 make_scoped_ptr(new ExtensionReenabler(
extension,
browser_context,
referrer_url,
callback,
make_scoped_ptr(new ExtensionInstallPrompt(web_contents))));
}
// static
scoped_ptr<ExtensionReenabler>
ExtensionReenabler::PromptForReenableWithPromptForTest(
const scoped_refptr<const Extension>& extension,
content::BrowserContext* browser_context,
const Callback& callback,
scoped_ptr<ExtensionInstallPrompt> install_prompt) {
return make_scoped_ptr(new ExtensionReenabler(extension,
browser_context,
GURL(),
callback,
install_prompt.Pass()));
}
ExtensionReenabler::ExtensionReenabler(
const scoped_refptr<const Extension>& extension,
content::BrowserContext* browser_context,
const GURL& referrer_url,
const Callback& callback,
scoped_ptr<ExtensionInstallPrompt> install_prompt)
: extension_(extension),
browser_context_(browser_context),
referrer_url_(referrer_url),
callback_(callback),
install_prompt_(install_prompt.Pass()),
finished_(false),
registry_observer_(this) {
DCHECK(extension_.get());
registry_observer_.Add(ExtensionRegistry::Get(browser_context_));
// 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,
browser_context_->GetRequestContext(),
referrer_url_,
extension->id()));
webstore_data_fetcher_->Start();
} else {
install_prompt_->ConfirmReEnable(this, extension.get());
}
}
void ExtensionReenabler::InstallUIProceed() {
// 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()) {
Finish(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;
Finish(enabled ? REENABLE_SUCCESS : NOT_ALLOWED);
}
}
void ExtensionReenabler::InstallUIAbort(bool user_initiated) {
Finish(user_initiated ? USER_CANCELED : ABORTED);
}
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(
scoped_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 {
install_prompt_->ConfirmReEnable(this, extension_.get());
}
}
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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