зеркало из https://github.com/mozilla/gecko-dev.git
194 строки
5.0 KiB
C++
194 строки
5.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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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#include "nsCRT.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" /* Deprecated in 0.7.x */
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#define NM_DBUS_SIGNAL_STATE_CHANGED "StateChanged"
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#define NM_STATE_CONNECTED_OLD 3 /* Before NM 0.9.0 */
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#define NM_STATE_CONNECTED_LOCAL 50
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#define NM_STATE_CONNECTED_SITE 60
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#define NM_STATE_CONNECTED_GLOBAL 70
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nsNetworkManagerListener::nsNetworkManagerListener()
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: mLinkUp(true), mNetworkManagerActive(false),
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mOK(true)
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{
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}
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nsNetworkManagerListener::~nsNetworkManagerListener()
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{
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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(bool* aIsUp)
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{
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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(bool* aKnown)
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{
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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::GetLinkType(uint32_t *aLinkType)
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{
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NS_ENSURE_ARG_POINTER(aLinkType);
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// XXX This function has not yet been implemented for this platform
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*aLinkType = nsINetworkLinkService::LINK_TYPE_UNKNOWN;
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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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{
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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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}
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nsresult rv = mDBUS->AddClient(this);
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if (NS_FAILED(rv)) {
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mDBUS = nullptr;
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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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}
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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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{
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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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}
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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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{
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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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}
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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 = 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 = false;
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return;
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}
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dbus_pending_call_set_notify(reply, NetworkStatusNotify, this, nullptr);
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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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}
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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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{
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mNetworkManagerActive = false;
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NotifyNetworkStatusObservers();
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}
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bool
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nsNetworkManagerListener::HandleMessage(DBusMessage* message)
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{
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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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dbus_message_is_signal(message, NM_DBUS_INTERFACE,
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NM_DBUS_SIGNAL_STATE_CHANGED)) {
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UpdateNetworkStatus(message);
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return true;
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}
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return false;
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}
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void
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nsNetworkManagerListener::UpdateNetworkStatus(DBusMessage* msg)
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{
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int32_t result;
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if (!dbus_message_get_args(msg, nullptr, DBUS_TYPE_UINT32, &result,
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DBUS_TYPE_INVALID)) {
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return;
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}
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mNetworkManagerActive = true;
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bool wasUp = mLinkUp;
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mLinkUp = result == NM_STATE_CONNECTED_OLD ||
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result == NM_STATE_CONNECTED_LOCAL ||
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result == NM_STATE_CONNECTED_SITE ||
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result == NM_STATE_CONNECTED_GLOBAL;
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if (wasUp == mLinkUp) {
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return;
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}
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NotifyNetworkStatusObservers();
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}
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