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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 CONTENT_BROWSER_SSL_SSL_CLIENT_AUTH_HANDLER_H_
#define CONTENT_BROWSER_SSL_SSL_CLIENT_AUTH_HANDLER_H_
#pragma once
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "content/browser/browser_thread.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_registrar.h"
#include "net/base/ssl_cert_request_info.h"
namespace net {
class URLRequest;
class X509Certificate;
} // namespace net
// This class handles the approval and selection of a certificate for SSL client
// authentication by the user.
// It is self-owned and deletes itself when the UI reports the user selection or
// when the net::URLRequest is cancelled.
class SSLClientAuthHandler
: public base::RefCountedThreadSafe<SSLClientAuthHandler,
BrowserThread::DeleteOnIOThread> {
public:
SSLClientAuthHandler(net::URLRequest* request,
net::SSLCertRequestInfo* cert_request_info);
// Asks the user to select a certificate and resumes the URL request with that
// certificate.
// Should only be called on the IO thread.
void SelectCertificate();
// Invoked when the request associated with this handler is cancelled.
// Should only be called on the IO thread.
void OnRequestCancelled();
// Calls DoCertificateSelected on the I/O thread.
// Called on the UI thread after the user has made a selection (which may
// be long after DoSelectCertificate returns, if the UI is modeless/async.)
void CertificateSelected(net::X509Certificate* cert);
// Like CertificateSelected, but does not send SSL_CLIENT_AUTH_CERT_SELECTED
// notification. Used to avoid notification re-spamming when other
// certificate selectors act on a notification matching the same host.
void CertificateSelectedNoNotify(net::X509Certificate* cert);
// Returns the SSLCertRequestInfo for this handler.
net::SSLCertRequestInfo* cert_request_info() { return cert_request_info_; }
private:
friend class BrowserThread;
friend class DeleteTask<SSLClientAuthHandler>;
virtual ~SSLClientAuthHandler();
// Notifies that the user has selected a cert.
// Called on the IO thread.
void DoCertificateSelected(net::X509Certificate* cert);
// Calls the SSL helper on the UI thread.
void ShowClientCertificateRequestDialog(int render_process_host_id,
int render_view_host_id);
// The net::URLRequest that triggered this client auth.
net::URLRequest* request_;
// The certs to choose from.
scoped_refptr<net::SSLCertRequestInfo> cert_request_info_;
DISALLOW_COPY_AND_ASSIGN(SSLClientAuthHandler);
};
class SSLClientAuthObserver : public NotificationObserver {
public:
SSLClientAuthObserver(net::SSLCertRequestInfo* cert_request_info,
SSLClientAuthHandler* handler);
virtual ~SSLClientAuthObserver();
// UI should implement this to close the dialog.
virtual void OnCertSelectedByNotification() = 0;
// NotificationObserver implementation:
virtual void Observe(int type,
const NotificationSource& source,
const NotificationDetails& details);
// Begins observing notifications from other SSLClientAuthHandler instances.
// If another instance chooses a cert for a matching SSLCertRequestInfo, we
// will also use the same cert and OnCertSelectedByNotification will be called
// so that the cert selection UI can be closed.
void StartObserving();
// Stops observing notifications. We will no longer act on client auth
// notifications.
void StopObserving();
private:
scoped_refptr<net::SSLCertRequestInfo> cert_request_info_;
scoped_refptr<SSLClientAuthHandler> handler_;
NotificationRegistrar notification_registrar_;
DISALLOW_COPY_AND_ASSIGN(SSLClientAuthObserver);
};
#endif // CONTENT_BROWSER_SSL_SSL_CLIENT_AUTH_HANDLER_H_
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