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// Copyright (c) 2010 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_SSL_SSL_ERROR_HANDLER_H_
#define CHROME_BROWSER_SSL_SSL_ERROR_HANDLER_H_
#pragma once
#include <string>
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "chrome/browser/renderer_host/global_request_id.h"
#include "chrome/browser/ssl/ssl_manager.h"
#include "googleurl/src/gurl.h"
#include "webkit/glue/resource_type.h"
class ResourceDispatcherHost;
class SSLCertErrorHandler;
class TabContents;
namespace net {
class URLRequest;
} // namespace net
// An SSLErrorHandler carries information from the IO thread to the UI thread
// and is dispatched to the appropriate SSLManager when it arrives on the
// UI thread. Subclasses should override the OnDispatched/OnDispatchFailed
// methods to implement the actions that should be taken on the UI thread.
// These methods can call the different convenience methods ContinueRequest/
// CancelRequest to perform any required action on the net::URLRequest the
// ErrorHandler was created with.
//
// IMPORTANT NOTE:
//
// If you are not doing anything in OnDispatched/OnDispatchFailed, make sure
// you call TakeNoAction(). This is necessary for ensuring the instance is
// not leaked.
//
class SSLErrorHandler : public base::RefCountedThreadSafe<SSLErrorHandler> {
public:
virtual SSLCertErrorHandler* AsSSLCertErrorHandler();
// Find the appropriate SSLManager for the net::URLRequest and begin handling
// this error.
//
// Call on UI thread.
void Dispatch();
// Available on either thread.
const GURL& request_url() const { return request_url_; }
// Available on either thread.
ResourceType::Type resource_type() const { return resource_type_; }
// Returns the TabContents this object is associated with. Should be
// called from the UI thread.
TabContents* GetTabContents();
// Cancels the associated net::URLRequest.
// This method can be called from OnDispatchFailed and OnDispatched.
void CancelRequest();
// Continue the net::URLRequest ignoring any previous errors. Note that some
// errors cannot be ignored, in which case this will result in the request
// being canceled.
// This method can be called from OnDispatchFailed and OnDispatched.
void ContinueRequest();
// Cancels the associated net::URLRequest and mark it as denied. The renderer
// processes such request in a special manner, optionally replacing them
// with alternate content (typically frames content is replaced with a
// warning message).
// This method can be called from OnDispatchFailed and OnDispatched.
void DenyRequest();
// Does nothing on the net::URLRequest but ensures the current instance ref
// count is decremented appropriately. Subclasses that do not want to
// take any specific actions in their OnDispatched/OnDispatchFailed should
// call this.
void TakeNoAction();
protected:
friend class base::RefCountedThreadSafe<SSLErrorHandler>;
// Construct on the IO thread.
SSLErrorHandler(ResourceDispatcherHost* resource_dispatcher_host,
net::URLRequest* request,
ResourceType::Type resource_type);
virtual ~SSLErrorHandler();
// The following 2 methods are the methods subclasses should implement.
virtual void OnDispatchFailed();
// Can use the manager_ member.
virtual void OnDispatched();
// Should only be accessed on the UI thread.
SSLManager* manager_; // Our manager.
// The id of the net::URLRequest associated with this object.
// Should only be accessed from the IO thread.
GlobalRequestID request_id_;
// The ResourceDispatcherHost we are associated with.
ResourceDispatcherHost* resource_dispatcher_host_;
private:
// Completes the CancelRequest operation on the IO thread.
// Call on the IO thread.
void CompleteCancelRequest(int error);
// Completes the ContinueRequest operation on the IO thread.
//
// Call on the IO thread.
void CompleteContinueRequest();
// Derefs this instance.
// Call on the IO thread.
void CompleteTakeNoAction();
// We use these members to find the correct SSLManager when we arrive on
// the UI thread.
int render_process_host_id_;
int tab_contents_id_;
// The URL that we requested.
// This read-only member can be accessed on any thread.
const GURL request_url_;
// What kind of resource is associated with the requested that generated
// that error.
// This read-only member can be accessed on any thread.
const ResourceType::Type resource_type_;
// A flag to make sure we notify the net::URLRequest exactly once.
// Should only be accessed on the IO thread
bool request_has_been_notified_;
DISALLOW_COPY_AND_ASSIGN(SSLErrorHandler);
};
#endif // CHROME_BROWSER_SSL_SSL_ERROR_HANDLER_H_
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