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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.
#include "base/message_loop.h"
#include "base/threading/thread.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/io_thread.h"
#include "chrome/browser/net/ssl_config_service_manager.h"
#include "chrome/browser/prefs/pref_member.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/common/pref_names.h"
#include "content/common/notification_details.h"
#include "content/common/notification_source.h"
#include "content/common/notification_type.h"
#include "net/base/ssl_config_service.h"
////////////////////////////////////////////////////////////////////////////////
// SSLConfigServicePref
// An SSLConfigService which stores a cached version of the current SSLConfig
// prefs, which are updated by SSLConfigServiceManagerPref when the prefs
// change.
class SSLConfigServicePref : public net::SSLConfigService {
public:
SSLConfigServicePref() {}
virtual ~SSLConfigServicePref() {}
// Store SSL config settings in |config|. Must only be called from IO thread.
virtual void GetSSLConfig(net::SSLConfig* config);
private:
// Allow the pref watcher to update our internal state.
friend class SSLConfigServiceManagerPref;
// This method is posted to the IO thread from the browser thread to carry the
// new config information.
void SetNewSSLConfig(const net::SSLConfig& new_config);
// Cached value of prefs, should only be accessed from IO thread.
net::SSLConfig cached_config_;
DISALLOW_COPY_AND_ASSIGN(SSLConfigServicePref);
};
void SSLConfigServicePref::GetSSLConfig(net::SSLConfig* config) {
*config = cached_config_;
}
void SSLConfigServicePref::SetNewSSLConfig(
const net::SSLConfig& new_config) {
net::SSLConfig orig_config = cached_config_;
cached_config_ = new_config;
ProcessConfigUpdate(orig_config, new_config);
}
////////////////////////////////////////////////////////////////////////////////
// SSLConfigServiceManagerPref
// The manager for holding and updating an SSLConfigServicePref instance.
class SSLConfigServiceManagerPref
: public SSLConfigServiceManager,
public NotificationObserver {
public:
SSLConfigServiceManagerPref(PrefService* user_prefs,
PrefService* local_state);
virtual ~SSLConfigServiceManagerPref() {}
virtual net::SSLConfigService* Get();
private:
// Register user_prefs and local_state SSL preferences.
static void RegisterPrefs(PrefService* prefs);
// Copy pref values to local_state from user_prefs if local_state doesn't have
// the pref value and user_prefs has the pref value. Remove them from
// user_prefs.
static void MigrateUserPrefs(PrefService* local_state,
PrefService* user_prefs);
// Callback for preference changes. This will post the changes to the IO
// thread with SetNewSSLConfig.
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
// Store SSL config settings in |config|, directly from the preferences. Must
// only be called from UI thread.
void GetSSLConfigFromPrefs(net::SSLConfig* config);
// The prefs (should only be accessed from UI thread)
BooleanPrefMember rev_checking_enabled_;
BooleanPrefMember ssl3_enabled_;
BooleanPrefMember tls1_enabled_;
BooleanPrefMember tls1_1_enabled_;
BooleanPrefMember tls1_2_enabled_;
scoped_refptr<SSLConfigServicePref> ssl_config_service_;
DISALLOW_COPY_AND_ASSIGN(SSLConfigServiceManagerPref);
};
SSLConfigServiceManagerPref::SSLConfigServiceManagerPref(
PrefService* user_prefs, PrefService* local_state)
: ssl_config_service_(new SSLConfigServicePref()) {
DCHECK(user_prefs);
DCHECK(local_state);
RegisterPrefs(user_prefs);
RegisterPrefs(local_state);
// TODO(rtenneti): remove migration code after 6 months.
MigrateUserPrefs(local_state, user_prefs);
rev_checking_enabled_.Init(prefs::kCertRevocationCheckingEnabled,
local_state, this);
ssl3_enabled_.Init(prefs::kSSL3Enabled, local_state, this);
tls1_enabled_.Init(prefs::kTLS1Enabled, local_state, this);
tls1_1_enabled_.Init(prefs::kTLS1_1Enabled, local_state, this);
tls1_2_enabled_.Init(prefs::kTLS1_2Enabled, local_state, this);
// Initialize from UI thread. This is okay as there shouldn't be anything on
// the IO thread trying to access it yet.
GetSSLConfigFromPrefs(&ssl_config_service_->cached_config_);
}
// static
void SSLConfigServiceManagerPref::RegisterPrefs(PrefService* prefs) {
net::SSLConfig default_config;
if (!prefs->FindPreference(prefs::kCertRevocationCheckingEnabled)) {
prefs->RegisterBooleanPref(prefs::kCertRevocationCheckingEnabled,
default_config.rev_checking_enabled);
}
if (!prefs->FindPreference(prefs::kSSL3Enabled)) {
prefs->RegisterBooleanPref(prefs::kSSL3Enabled,
default_config.ssl3_enabled);
}
if (!prefs->FindPreference(prefs::kTLS1Enabled)) {
prefs->RegisterBooleanPref(prefs::kTLS1Enabled,
default_config.tls1_enabled);
}
if (!prefs->FindPreference(prefs::kTLS1_1Enabled)) {
prefs->RegisterBooleanPref(prefs::kTLS1_1Enabled,
default_config.tls1_1_enabled);
}
if (!prefs->FindPreference(prefs::kTLS1_2Enabled)) {
prefs->RegisterBooleanPref(prefs::kTLS1_2Enabled,
default_config.tls1_2_enabled);
}
}
// static
void SSLConfigServiceManagerPref::MigrateUserPrefs(PrefService* local_state,
PrefService* user_prefs) {
if (user_prefs->HasPrefPath(prefs::kCertRevocationCheckingEnabled)) {
if (!local_state->HasPrefPath(prefs::kCertRevocationCheckingEnabled)) {
// Migrate the kCertRevocationCheckingEnabled preference.
local_state->SetBoolean(prefs::kCertRevocationCheckingEnabled,
user_prefs->GetBoolean(prefs::kCertRevocationCheckingEnabled));
}
user_prefs->ClearPref(prefs::kCertRevocationCheckingEnabled);
}
if (user_prefs->HasPrefPath(prefs::kSSL3Enabled)) {
if (!local_state->HasPrefPath(prefs::kSSL3Enabled)) {
// Migrate the kSSL3Enabled preference.
local_state->SetBoolean(prefs::kSSL3Enabled,
user_prefs->GetBoolean(prefs::kSSL3Enabled));
}
user_prefs->ClearPref(prefs::kSSL3Enabled);
}
if (user_prefs->HasPrefPath(prefs::kTLS1Enabled)) {
if (!local_state->HasPrefPath(prefs::kTLS1Enabled)) {
// Migrate the kTLS1Enabled preference.
local_state->SetBoolean(prefs::kTLS1Enabled,
user_prefs->GetBoolean(prefs::kTLS1Enabled));
}
user_prefs->ClearPref(prefs::kTLS1Enabled);
}
}
net::SSLConfigService* SSLConfigServiceManagerPref::Get() {
return ssl_config_service_;
}
void SSLConfigServiceManagerPref::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
base::Thread* io_thread = g_browser_process->io_thread();
if (io_thread) {
net::SSLConfig new_config;
GetSSLConfigFromPrefs(&new_config);
// Post a task to |io_loop| with the new configuration, so it can
// update |cached_config_|.
io_thread->message_loop()->PostTask(
FROM_HERE,
NewRunnableMethod(
ssl_config_service_.get(),
&SSLConfigServicePref::SetNewSSLConfig,
new_config));
}
}
void SSLConfigServiceManagerPref::GetSSLConfigFromPrefs(
net::SSLConfig* config) {
config->rev_checking_enabled = rev_checking_enabled_.GetValue();
config->ssl3_enabled = ssl3_enabled_.GetValue();
config->tls1_enabled = tls1_enabled_.GetValue();
config->tls1_1_enabled = tls1_1_enabled_.GetValue();
config->tls1_2_enabled = tls1_2_enabled_.GetValue();
SSLConfigServicePref::SetSSLConfigFlags(config);
}
////////////////////////////////////////////////////////////////////////////////
// SSLConfigServiceManager
// static
SSLConfigServiceManager* SSLConfigServiceManager::CreateDefaultManager(
PrefService* user_prefs,
PrefService* local_state) {
return new SSLConfigServiceManagerPref(user_prefs, local_state);
}
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