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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 WEBKIT_APPCACHE_APPCACHE_INTERCEPTOR_H_
#define WEBKIT_APPCACHE_APPCACHE_INTERCEPTOR_H_
#include "base/memory/singleton.h"
#include "googleurl/src/gurl.h"
#include "net/url_request/url_request.h"
#include "webkit/appcache/appcache_export.h"
#include "webkit/glue/resource_type.h"
namespace appcache {
class AppCacheRequestHandler;
class AppCacheService;
// An interceptor to hijack requests and potentially service them out of
// the appcache.
class APPCACHE_EXPORT AppCacheInterceptor
: public net::URLRequest::Interceptor {
public:
// Registers a singleton instance with the net library.
// Should be called early in the IO thread prior to initiating requests.
static void EnsureRegistered() {
CHECK(GetInstance());
}
// Must be called to make a request eligible for retrieval from an appcache.
static void SetExtraRequestInfo(net::URLRequest* request,
AppCacheService* service,
int process_id,
int host_id,
ResourceType::Type resource_type);
// May be called after response headers are complete to retrieve extra
// info about the response.
static void GetExtraResponseInfo(net::URLRequest* request,
int64* cache_id,
GURL* manifest_url);
static AppCacheInterceptor* GetInstance();
protected:
// Override from net::URLRequest::Interceptor:
virtual net::URLRequestJob* MaybeIntercept(net::URLRequest* request) OVERRIDE;
virtual net::URLRequestJob* MaybeInterceptResponse(
net::URLRequest* request) OVERRIDE;
virtual net::URLRequestJob* MaybeInterceptRedirect(
net::URLRequest* request,
const GURL& location) OVERRIDE;
private:
friend struct DefaultSingletonTraits<AppCacheInterceptor>;
AppCacheInterceptor();
virtual ~AppCacheInterceptor();
static void SetHandler(net::URLRequest* request,
AppCacheRequestHandler* handler);
static AppCacheRequestHandler* GetHandler(net::URLRequest* request);
DISALLOW_COPY_AND_ASSIGN(AppCacheInterceptor);
};
} // namespace appcache
#endif // WEBKIT_APPCACHE_APPCACHE_INTERCEPTOR_H_