net/base/network_change_notifier_mac.cc

// 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.

#include "net/base/network_change_notifier_mac.h"

#include <SystemConfiguration/SCDynamicStoreKey.h>
#include <SystemConfiguration/SCSchemaDefinitions.h>

#include "base/mac/scoped_cftyperef.h"

namespace net {

NetworkChangeNotifierMac::NetworkChangeNotifierMac()
    : forwarder_(this),
      config_watcher_(&forwarder_) {}
NetworkChangeNotifierMac::~NetworkChangeNotifierMac() {}

bool NetworkChangeNotifierMac::IsCurrentlyOffline() const {
  // TODO(eroman): http://crbug.com/53473
  return false;
}

void NetworkChangeNotifierMac::SetDynamicStoreNotificationKeys(
    SCDynamicStoreRef store) {
  // Called on notifier thread.
  base::mac::ScopedCFTypeRef<CFMutableArrayRef> notification_keys(
      CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks));
  base::mac::ScopedCFTypeRef<CFStringRef> key(
      SCDynamicStoreKeyCreateNetworkGlobalEntity(
          NULL, kSCDynamicStoreDomainState, kSCEntNetInterface));
  CFArrayAppendValue(notification_keys.get(), key.get());
  key.reset(SCDynamicStoreKeyCreateNetworkGlobalEntity(
      NULL, kSCDynamicStoreDomainState, kSCEntNetIPv4));
  CFArrayAppendValue(notification_keys.get(), key.get());
  key.reset(SCDynamicStoreKeyCreateNetworkGlobalEntity(
      NULL, kSCDynamicStoreDomainState, kSCEntNetIPv6));
  CFArrayAppendValue(notification_keys.get(), key.get());

  // Set the notification keys.  This starts us receiving notifications.
  bool ret = SCDynamicStoreSetNotificationKeys(
      store, notification_keys.get(), NULL);
  // TODO(willchan): Figure out a proper way to handle this rather than crash.
  CHECK(ret);
}

void NetworkChangeNotifierMac::OnNetworkConfigChange(CFArrayRef changed_keys) {
  // Called on notifier thread.

  for (CFIndex i = 0; i < CFArrayGetCount(changed_keys); ++i) {
    CFStringRef key = static_cast<CFStringRef>(
        CFArrayGetValueAtIndex(changed_keys, i));
    if (CFStringHasSuffix(key, kSCEntNetIPv4) ||
        CFStringHasSuffix(key, kSCEntNetIPv6)) {
      NotifyObserversOfIPAddressChange();
      return;
    }
    if (CFStringHasSuffix(key, kSCEntNetInterface)) {
      // TODO(willchan): Does not appear to be working.  Look into this.
      // Perhaps this isn't needed anyway.
    } else {
      NOTREACHED();
    }
  }
}

}  // namespace net