net: extract net/cert out of net/base

net/base/cert_database.h

-// Copyright (c) 2012 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 NET_BASE_CERT_DATABASE_H_
-#define NET_BASE_CERT_DATABASE_H_
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "net/base/net_export.h"
-#include "net/base/x509_certificate.h"
-
-template <typename T> struct DefaultSingletonTraits;
-template <class ObserverType> class ObserverListThreadSafe;
-
-namespace net {
-
-// This class provides cross-platform functions to verify and add user
-// certificates, and to observe changes to the underlying certificate stores.
-
-// TODO(gauravsh): This class could be augmented with methods
-// for all operations that manipulate the underlying system
-// certificate store.
-
-class NET_EXPORT CertDatabase {
- public:
-  // A CertDatabase::Observer will be notified on certificate database changes.
-  // The change could be either a new user certificate is added or trust on
-  // a certificate is changed.  Observers can register themselves
-  // via CertDatabase::AddObserver, and can un-register with
-  // CertDatabase::RemoveObserver.
-  class NET_EXPORT Observer {
-   public:
-    virtual ~Observer() {}
-
-    // Will be called when a new certificate is added.
-    virtual void OnCertAdded(const X509Certificate* cert) {}
-
-    // Will be called when a certificate is removed.
-    virtual void OnCertRemoved(const X509Certificate* cert) {}
-
-    // Will be called when a certificate's trust is changed.
-    virtual void OnCertTrustChanged(const X509Certificate* cert) {}
-
-   protected:
-    Observer() {}
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(Observer);
-  };
-
-  // Returns the CertDatabase singleton.
-  static CertDatabase* GetInstance();
-
-  // Check whether this is a valid user cert that we have the private key for.
-  // Returns OK or a network error code such as ERR_CERT_CONTAINS_ERRORS.
-  int CheckUserCert(X509Certificate* cert);
-
-  // Store user (client) certificate. Assumes CheckUserCert has already passed.
-  // Returns OK, or ERR_ADD_USER_CERT_FAILED if there was a problem saving to
-  // the platform cert database, or possibly other network error codes.
-  int AddUserCert(X509Certificate* cert);
-
-  // Registers |observer| to receive notifications of certificate changes.  The
-  // thread on which this is called is the thread on which |observer| will be
-  // called back with notifications.
-  void AddObserver(Observer* observer);
-
-  // Unregisters |observer| from receiving notifications.  This must be called
-  // on the same thread on which AddObserver() was called.
-  void RemoveObserver(Observer* observer);
-
-#if defined(OS_MACOSX) && !defined(OS_IOS)
-  // Configures the current message loop to observe and forward events from
-  // Keychain services. The MessageLoop must have an associated CFRunLoop,
-  // which means that this must be called from a MessageLoop of TYPE_UI.
-  void SetMessageLoopForKeychainEvents();
-#endif
-
- private:
-  friend struct DefaultSingletonTraits<CertDatabase>;
-
-  CertDatabase();
-  ~CertDatabase();
-
-  // Broadcasts notifications to all registered observers.
-  void NotifyObserversOfCertAdded(const X509Certificate* cert);
-  void NotifyObserversOfCertRemoved(const X509Certificate* cert);
-  void NotifyObserversOfCertTrustChanged(const X509Certificate* cert);
-
-  const scoped_refptr<ObserverListThreadSafe<Observer> > observer_list_;
-
-#if defined(USE_NSS) || (defined(OS_MACOSX) && !defined(OS_IOS))
-  class Notifier;
-  friend class Notifier;
-  scoped_ptr<Notifier> notifier_;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(CertDatabase);
-};
-
-}  // namespace net
-
-#endif  // NET_BASE_CERT_DATABASE_H_