SafeBrowsing support for WebSocket (post-network-servicification)

components/safe_browsing/renderer/websocket_sb_handshake_throttle.h

+// Copyright 2017 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.
+
+// Implementation of SafeBrowsing for WebSockets. This code runs inside the
+// render process, calling the interface defined in safe_browsing.mojom to
+// communicate with the SafeBrowsing service.
+
+#ifndef COMPONENTS_SAFE_BROWSING_RENDERER_WEBSOCKET_SB_HANDSHAKE_THROTTLE_H_
+#define COMPONENTS_SAFE_BROWSING_RENDERER_WEBSOCKET_SB_HANDSHAKE_THROTTLE_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "components/safe_browsing/common/safe_browsing.mojom.h"
+#include "third_party/WebKit/public/platform/WebCallbacks.h"
+#include "third_party/WebKit/public/platform/WebSocketHandshakeThrottle.h"
+#include "url/gurl.h"
+
+namespace safe_browsing {
+
+class WebSocketSBHandshakeThrottle : public blink::WebSocketHandshakeThrottle {
+ public:
+  // Returns nullptr if the network service is not enabled.
+  // Otherwise returns a WebSocketSBHandshakeThrottle after lazily initialising
+  // |*safe_browsing_service|. |*safe_browsing_service| is required to out-live
+  // this object.
+  static std::unique_ptr<WebSocketSBHandshakeThrottle> MaybeCreate(
+      mojom::SafeBrowsingPtr* save_browsing_service);
+
+  explicit WebSocketSBHandshakeThrottle(mojom::SafeBrowsing* safe_browsing);
+  ~WebSocketSBHandshakeThrottle() override;
+
+  void ThrottleHandshake(
+      const blink::WebURL& url,
+      blink::WebLocalFrame* web_local_frame,
+      blink::WebCallbacks<void, const blink::WebString&>* callbacks) override;
+
+ private:
+  void OnCheckResult(bool safe);
+
+  GURL url_;
+  blink::WebCallbacks<void, const blink::WebString&>* callbacks_;
+  mojom::SafeBrowsingUrlCheckerPtr url_checker_;
+  mojom::SafeBrowsing* safe_browsing_;
+
+  base::WeakPtrFactory<WebSocketSBHandshakeThrottle> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebSocketSBHandshakeThrottle);
+};
+
+}  // namespace safe_browsing
+
+#endif  // COMPONENTS_SAFE_BROWSING_RENDERER_WEBSOCKET_SB_HANDSHAKE_THROTTLE_H_