net/ssl/ssl_config_service.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_SSL_SSL_CONFIG_SERVICE_H_
   6 #define NET_SSL_SSL_CONFIG_SERVICE_H_
   7
   8 #include <vector>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/observer_list.h"
  12 #include "net/base/net_export.h"
  13 #include "net/cert/crl_set.h"
  14 #include "net/cert/ct_ev_whitelist.h"
  15 #include "net/ssl/ssl_config.h"
  16
  17 namespace net {
  18
  19 // The interface for retrieving the SSL configuration.  This interface
  20 // does not cover setting the SSL configuration, as on some systems, the
  21 // SSLConfigService objects may not have direct access to the configuration, or
  22 // live longer than the configuration preferences.
  23 class NET_EXPORT SSLConfigService
  24     : public base::RefCountedThreadSafe<SSLConfigService> {
  25  public:
  26   // Observer is notified when SSL config settings have changed.
  27   class NET_EXPORT Observer {
  28    public:
  29     // Notify observers if SSL settings have changed.  We don't check all of the
  30     // data in SSLConfig, just those that qualify as a user config change.
  31     // The following settings are considered user changes:
  32     //     rev_checking_enabled
  33     //     version_min
  34     //     version_max
  35     //     disabled_cipher_suites
  36     //     channel_id_enabled
  37     //     false_start_enabled
  38     //     require_forward_secrecy
  39     virtual void OnSSLConfigChanged() = 0;
  40
  41    protected:
  42     virtual ~Observer() {}
  43   };
  44
  45   SSLConfigService();
  46
  47   // May not be thread-safe, should only be called on the IO thread.
  48   virtual void GetSSLConfig(SSLConfig* config) = 0;
  49
  50   // Sets and gets the current, global CRL set.
  51   static void SetCRLSet(scoped_refptr<CRLSet> crl_set);
  52   static scoped_refptr<CRLSet> GetCRLSet();
  53
  54   // Sets and gets the current, global EV certificates whitelist
  55   static void SetEVCertsWhitelist(
  56       scoped_refptr<ct::EVCertsWhitelist> ev_whitelist);
  57   static scoped_refptr<ct::EVCertsWhitelist> GetEVCertsWhitelist();
  58
  59   // Add an observer of this service.
  60   void AddObserver(Observer* observer);
  61
  62   // Remove an observer of this service.
  63   void RemoveObserver(Observer* observer);
  64
  65   // Calls the OnSSLConfigChanged method of registered observers. Should only be
  66   // called on the IO thread.
  67   void NotifySSLConfigChange();
  68
  69  protected:
  70   friend class base::RefCountedThreadSafe<SSLConfigService>;
  71
  72   virtual ~SSLConfigService();
  73
  74   // Process before/after config update.
  75   void ProcessConfigUpdate(const SSLConfig& orig_config,
  76                            const SSLConfig& new_config);
  77
  78  private:
  79   ObserverList<Observer> observer_list_;
  80 };
  81
  82 }  // namespace net
  83
  84 #endif  // NET_SSL_SSL_CONFIG_SERVICE_H_