зеркало из https://github.com/mozilla/gecko-dev.git
200 строки
6.0 KiB
C++
200 строки
6.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Novell code.
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*
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* The Initial Developer of the Original Code is Novell, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2006
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* the Initial Developer. All Rights Reserved.
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*
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* Original Author: Robert O'Callahan (rocallahan@novell.com)
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsNetworkManagerListener.h"
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#include "nsNetCID.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIObserverService.h"
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#include "nsStringAPI.h"
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// Define NetworkManager API constants. This avoids a dependency on
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// NetworkManager-devel.
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#define NM_DBUS_SERVICE "org.freedesktop.NetworkManager"
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#define NM_DBUS_PATH "/org/freedesktop/NetworkManager"
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#define NM_DBUS_INTERFACE "org.freedesktop.NetworkManager"
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#define NM_DBUS_SIGNAL_STATE_CHANGE "StateChange"
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typedef enum NMState
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{
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NM_STATE_UNKNOWN = 0,
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NM_STATE_ASLEEP,
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NM_STATE_CONNECTING,
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NM_STATE_CONNECTED,
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NM_STATE_DISCONNECTED
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} NMState;
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nsNetworkManagerListener::nsNetworkManagerListener() :
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mLinkUp(PR_TRUE), mNetworkManagerActive(PR_FALSE),
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mOK(PR_TRUE), mManageIOService(PR_TRUE)
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{
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}
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nsNetworkManagerListener::~nsNetworkManagerListener() {
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if (mDBUS) {
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mDBUS->RemoveClient(this);
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}
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}
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NS_IMPL_ISUPPORTS1(nsNetworkManagerListener, nsINetworkLinkService)
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nsresult
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nsNetworkManagerListener::GetIsLinkUp(PRBool* aIsUp) {
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*aIsUp = mLinkUp;
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return NS_OK;
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}
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nsresult
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nsNetworkManagerListener::GetLinkStatusKnown(PRBool* aKnown) {
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*aKnown = mNetworkManagerActive;
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return NS_OK;
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}
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nsresult
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nsNetworkManagerListener::Init() {
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mDBUS = nsDBusService::Get();
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if (!mDBUS)
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return NS_ERROR_OUT_OF_MEMORY;
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nsresult rv = mDBUS->AddClient(this);
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if (NS_FAILED(rv)) {
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mDBUS = nsnull;
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return rv;
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}
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if (!mOK)
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return NS_ERROR_FAILURE;
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return NS_OK;
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}
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static void
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NetworkStatusNotify(DBusPendingCall *pending, void* user_data) {
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DBusMessage* msg = dbus_pending_call_steal_reply(pending);
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if (!msg)
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return;
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if (dbus_message_get_type(msg) == DBUS_MESSAGE_TYPE_METHOD_RETURN) {
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static_cast<nsNetworkManagerListener*>(user_data)->UpdateNetworkStatus(msg);
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}
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dbus_message_unref(msg);
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}
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void
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nsNetworkManagerListener::RegisterWithConnection(DBusConnection* connection) {
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DBusError error;
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dbus_error_init(&error);
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dbus_bus_add_match(connection,
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"type='signal',"
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"interface='" NM_DBUS_INTERFACE "',"
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"sender='" NM_DBUS_SERVICE "',"
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"path='" NM_DBUS_PATH "'", &error);
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mOK = !dbus_error_is_set(&error);
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dbus_error_free(&error);
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if (!mOK)
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return;
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DBusMessage* msg =
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dbus_message_new_method_call(NM_DBUS_SERVICE, NM_DBUS_PATH,
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NM_DBUS_INTERFACE, "state");
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if (!msg) {
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mOK = PR_FALSE;
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return;
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}
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DBusPendingCall* reply = mDBUS->SendWithReply(this, msg);
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if (!reply) {
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mOK = PR_FALSE;
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return;
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}
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dbus_pending_call_set_notify(reply, NetworkStatusNotify, this, NULL);
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dbus_pending_call_unref(reply);
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}
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void
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nsNetworkManagerListener::NotifyNetworkStatusObservers() {
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nsCOMPtr<nsIObserverService> observerService =
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do_GetService("@mozilla.org/observer-service;1");
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if (!observerService)
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return;
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const PRUnichar* status;
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if (mNetworkManagerActive) {
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status = mLinkUp ? NS_LITERAL_STRING(NS_NETWORK_LINK_DATA_UP).get()
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: NS_LITERAL_STRING(NS_NETWORK_LINK_DATA_DOWN).get();
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} else {
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status = NS_LITERAL_STRING(NS_NETWORK_LINK_DATA_UNKNOWN).get();
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}
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observerService->NotifyObservers(static_cast<nsISupports*>(this),
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NS_NETWORK_LINK_TOPIC, status);
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}
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void
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nsNetworkManagerListener::UnregisterWithConnection(DBusConnection* connection) {
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mNetworkManagerActive = PR_FALSE;
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NotifyNetworkStatusObservers();
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}
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PRBool
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nsNetworkManagerListener::HandleMessage(DBusMessage* message) {
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if (dbus_message_is_signal(message, NM_DBUS_INTERFACE,
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NM_DBUS_SIGNAL_STATE_CHANGE)) {
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UpdateNetworkStatus(message);
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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void
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nsNetworkManagerListener::UpdateNetworkStatus(DBusMessage* msg) {
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PRInt32 result;
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if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_UINT32, &result,
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DBUS_TYPE_INVALID))
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return;
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mNetworkManagerActive = PR_TRUE;
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PRBool wasUp = mLinkUp;
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mLinkUp = result == NM_STATE_CONNECTED;
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if (wasUp == mLinkUp)
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return;
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NotifyNetworkStatusObservers();
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}
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