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// Copyright (c) 2011 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.
#ifndef CHROME_BROWSER_SAFE_BROWSING_CLIENT_SIDE_DETECTION_HOST_H_
#define CHROME_BROWSER_SAFE_BROWSING_CLIENT_SIDE_DETECTION_HOST_H_
#pragma once
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_callback_factory.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/safe_browsing/browser_feature_extractor.h"
#include "chrome/browser/safe_browsing/safe_browsing_service.h"
#include "content/browser/tab_contents/tab_contents_observer.h"
#include "content/common/notification_registrar.h"
#include "googleurl/src/gurl.h"
class NotificationDetails;
class NotificationSource;
class TabContents;
namespace safe_browsing {
class ClientPhishingRequest;
class ClientSideDetectionService;
// This class is used to receive the IPC from the renderer which
// notifies the browser that a URL was classified as phishing. This
// class relays this information to the client-side detection service
// class which sends a ping to a server to validate the verdict.
// TODO(noelutz): move all client-side detection IPCs to this class.
class ClientSideDetectionHost : public TabContentsObserver,
public NotificationObserver {
public:
// The caller keeps ownership of the tab object and is responsible for
// ensuring that it stays valid until TabContentsDestroyed is called.
static ClientSideDetectionHost* Create(TabContents* tab);
virtual ~ClientSideDetectionHost();
// From TabContentsObserver.
virtual bool OnMessageReceived(const IPC::Message& message);
// From TabContentsObserver. If we navigate away we cancel all pending
// callbacks that could show an interstitial, and check to see whether
// we should classify the new URL.
virtual void DidNavigateMainFramePostCommit(
const content::LoadCommittedDetails& details,
const ViewHostMsg_FrameNavigate_Params& params);
protected:
// From TabContentsObserver. Called when the TabContents is being destroyed.
virtual void TabContentsDestroyed(TabContents* tab);
private:
friend class ClientSideDetectionHostTest;
class ShouldClassifyUrlRequest;
friend class ShouldClassifyUrlRequest;
explicit ClientSideDetectionHost(TabContents* tab);
// Verdict is an encoded ClientPhishingRequest protocol message.
void OnDetectedPhishingSite(const std::string& verdict);
// Callback that is called when the server ping back is
// done. Display an interstitial if |is_phishing| is true.
// Otherwise, we do nothing. Called in UI thread.
void MaybeShowPhishingWarning(GURL phishing_url, bool is_phishing);
// Callback that is called when the browser feature extractor is done.
// This method is responsible for deleting the request object. Called on
// the UI thread.
void FeatureExtractionDone(bool success, ClientPhishingRequest* request);
// From NotificationObserver. Called when a notification comes in. This
// method is called in the UI thread.
virtual void Observe(int type,
const NotificationSource& source,
const NotificationDetails& details);
// Used for testing. This function does not take ownership of the service
// class.
void set_client_side_detection_service(ClientSideDetectionService* service);
// Used for testing. This function does not take ownership of the service
// class.
void set_safe_browsing_service(SafeBrowsingService* service);
// This pointer may be NULL if client-side phishing detection is disabled.
ClientSideDetectionService* csd_service_;
// This pointer may be NULL if SafeBrowsing is disabled.
scoped_refptr<SafeBrowsingService> sb_service_;
// Keep a handle to the latest classification request so that we can cancel
// it if necessary.
scoped_refptr<ShouldClassifyUrlRequest> classification_request_;
// Browser-side feature extractor.
scoped_ptr<BrowserFeatureExtractor> feature_extractor_;
// Keeps some info about the current page visit while the renderer
// classification is going on. Since we cancel classification on
// every page load we can simply keep this data around as a member
// variable. This information will be passed on to the feature extractor.
scoped_ptr<BrowseInfo> browse_info_;
// Handles registering notifications with the NotificationService.
NotificationRegistrar registrar_;
base::ScopedCallbackFactory<ClientSideDetectionHost> cb_factory_;
DISALLOW_COPY_AND_ASSIGN(ClientSideDetectionHost);
};
} // namespace safe_browsing
#endif // CHROME_BROWSER_SAFE_BROWSING_CLIENT_SIDE_DETECTION_HOST_H_
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