1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef WEBKIT_BROWSER_APPCACHE_APPCACHE_INTERCEPTOR_H_ 6 #define WEBKIT_BROWSER_APPCACHE_APPCACHE_INTERCEPTOR_H_ 7 8 #include "base/memory/singleton.h" 9 #include "net/url_request/url_request.h" 10 #include "url/gurl.h" 11 #include "webkit/browser/webkit_storage_browser_export.h" 12 #include "webkit/common/resource_type.h" 13 14 namespace appcache { 15 16 class AppCacheRequestHandler; 17 class AppCacheService; 18 19 // An interceptor to hijack requests and potentially service them out of 20 // the appcache. 21 class WEBKIT_STORAGE_BROWSER_EXPORT AppCacheInterceptor 22 : public net::URLRequest::Interceptor { 23 public: 24 // Registers a singleton instance with the net library. 25 // Should be called early in the IO thread prior to initiating requests. 26 static void EnsureRegistered() { 27 CHECK(GetInstance()); 28 } 29 30 // Must be called to make a request eligible for retrieval from an appcache. 31 static void SetExtraRequestInfo(net::URLRequest* request, 32 AppCacheService* service, 33 int process_id, 34 int host_id, 35 ResourceType::Type resource_type); 36 37 // May be called after response headers are complete to retrieve extra 38 // info about the response. 39 static void GetExtraResponseInfo(net::URLRequest* request, 40 int64* cache_id, 41 GURL* manifest_url); 42 43 // Methods to support cross site navigations. 44 static void PrepareForCrossSiteTransfer(net::URLRequest* request, 45 int old_process_id); 46 static void CompleteCrossSiteTransfer(net::URLRequest* request, 47 int new_process_id, 48 int new_host_id); 49 50 static AppCacheInterceptor* GetInstance(); 51 52 protected: 53 // Override from net::URLRequest::Interceptor: 54 virtual net::URLRequestJob* MaybeIntercept( 55 net::URLRequest* request, 56 net::NetworkDelegate* network_delegate) OVERRIDE; 57 virtual net::URLRequestJob* MaybeInterceptResponse( 58 net::URLRequest* request, 59 net::NetworkDelegate* network_delegate) OVERRIDE; 60 virtual net::URLRequestJob* MaybeInterceptRedirect( 61 net::URLRequest* request, 62 net::NetworkDelegate* network_delegate, 63 const GURL& location) OVERRIDE; 64 65 private: 66 friend struct DefaultSingletonTraits<AppCacheInterceptor>; 67 68 AppCacheInterceptor(); 69 virtual ~AppCacheInterceptor(); 70 71 static void SetHandler(net::URLRequest* request, 72 AppCacheRequestHandler* handler); 73 static AppCacheRequestHandler* GetHandler(net::URLRequest* request); 74 75 DISALLOW_COPY_AND_ASSIGN(AppCacheInterceptor); 76 }; 77 78 } // namespace appcache 79 80 #endif // WEBKIT_BROWSER_APPCACHE_APPCACHE_INTERCEPTOR_H_ 81