blob: 4366dbdff5c4e29c81a05996a867361e41c34926 [file] [log] [blame]
// 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.
#include <map>
#include <string>
#include "base/callback.h"
#include "base/containers/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/net_export.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_interceptor.h"
class GURL;
namespace net {
class URLRequestJob;
class URLRequestInterceptor;
// A class to help filter URLRequest jobs based on the URL of the request
// rather than just the scheme. Example usage:
// // Intercept "scheme://host/" requests.
// URLRequestFilter::GetInstance()->AddHostnameInterceptor("scheme", "host",
// interceptor.Pass());
// // Add special handling for the URL
// URLRequestFilter::GetInstance()->AddUrlInterceptor(GURL(""),
// interceptor.Pass());
// If the URLRequestFilter::MaybeInterceptRequest can't find a handler for a
// request, it returns NULL and lets the configured ProtocolHandler handle the
// request.
class NET_EXPORT URLRequestFilter : public URLRequestInterceptor {
static URLRequest::ProtocolFactory Factory;
// Singleton instance for use.
static URLRequestFilter* GetInstance();
void AddHostnameHandler(const std::string& scheme,
const std::string& hostname,
URLRequest::ProtocolFactory* factory);
void AddHostnameInterceptor(
const std::string& scheme,
const std::string& hostname,
scoped_ptr<URLRequestInterceptor> interceptor);
void RemoveHostnameHandler(const std::string& scheme,
const std::string& hostname);
// Returns true if we successfully added the URL handler. This will replace
// old handlers for the URL if one existed.
bool AddUrlHandler(const GURL& url,
URLRequest::ProtocolFactory* factory);
bool AddUrlInterceptor(const GURL& url,
scoped_ptr<URLRequestInterceptor> interceptor);
void RemoveUrlHandler(const GURL& url);
// Clear all the existing URL handlers and unregister with the
// ProtocolFactory. Resets the hit count.
void ClearHandlers();
// Returns the number of times a handler was used to service a request.
int hit_count() const { return hit_count_; }
// URLRequestInterceptor implementation:
URLRequestJob* MaybeInterceptRequest(
URLRequest* request,
NetworkDelegate* network_delegate) const override;
// scheme,hostname -> URLRequestInterceptor
typedef std::map<std::pair<std::string, std::string>,
URLRequestInterceptor* > HostnameInterceptorMap;
// URL -> URLRequestInterceptor
typedef base::hash_map<std::string, URLRequestInterceptor*> URLInterceptorMap;
~URLRequestFilter() override;
// Maps hostnames to interceptors. Hostnames take priority over URLs.
HostnameInterceptorMap hostname_interceptor_map_;
// Maps URLs to interceptors.
URLInterceptorMap url_interceptor_map_;
mutable int hit_count_;
// Singleton instance.
static URLRequestFilter* shared_instance_;
} // namespace net