gecko/dom/wifi/WifiWorker.js

1948 lines
61 KiB
JavaScript

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
const DEBUG = false; // set to true to show debug messages
const WIFIWORKER_CONTRACTID = "@mozilla.org/wifi/worker;1";
const WIFIWORKER_CID = Components.ID("{a14e8977-d259-433a-a88d-58dd44657e5b}");
const WIFIWORKER_WORKER = "resource://gre/modules/wifi_worker.js";
const kNetworkInterfaceStateChangedTopic = "network-interface-state-changed";
XPCOMUtils.defineLazyServiceGetter(this, "gNetworkManager",
"@mozilla.org/network/manager;1",
"nsINetworkManager");
// A note about errors and error handling in this file:
// The libraries that we use in this file are intended for C code. For
// C code, it is natural to return -1 for errors and 0 for success.
// Therefore, the code that interacts directly with the worker uses this
// convention (note: command functions do get boolean results since the
// command always succeeds and we do a string/boolean check for the
// expected results).
var WifiManager = (function() {
function getSdkVersionAndDevice() {
Cu.import("resource://gre/modules/ctypes.jsm");
try {
let cutils = ctypes.open("libcutils.so");
let cbuf = ctypes.char.array(4096)();
let c_property_get = cutils.declare("property_get", ctypes.default_abi,
ctypes.int, // return value: length
ctypes.char.ptr, // key
ctypes.char.ptr, // value
ctypes.char.ptr); // default
let property_get = function (key, defaultValue) {
if (defaultValue === undefined) {
defaultValue = null;
}
c_property_get(key, cbuf, defaultValue);
return cbuf.readString();
}
return { sdkVersion: parseInt(property_get("ro.build.version.sdk")),
device: property_get("ro.product.device") };
} catch(e) {
// Eat it. Hopefully we're on a non-Gonk system ...
//
// XXX we should check that
return 0;
}
}
let { sdkVersion, device } = getSdkVersionAndDevice();
var controlWorker = new ChromeWorker(WIFIWORKER_WORKER);
var eventWorker = new ChromeWorker(WIFIWORKER_WORKER);
// Callbacks to invoke when a reply arrives from the controlWorker.
var controlCallbacks = Object.create(null);
var idgen = 0;
function controlMessage(obj, callback) {
var id = idgen++;
obj.id = id;
if (callback)
controlCallbacks[id] = callback;
controlWorker.postMessage(obj);
}
function onerror(e) {
// It is very important to call preventDefault on the event here.
// If an exception is thrown on the worker, it bubbles out to the
// component that created it. If that component doesn't have an
// onerror handler, the worker will try to call the error reporter
// on the context it was created on. However, That doesn't work
// for component contexts and can result in crashes. This onerror
// handler has to make sure that it calls preventDefault on the
// incoming event.
e.preventDefault();
var worker = (this === controlWorker) ? "control" : "event";
debug("Got an error from the " + worker + " worker: " + e.filename +
":" + e.lineno + ": " + e.message + "\n");
}
controlWorker.onerror = onerror;
eventWorker.onerror = onerror;
controlWorker.onmessage = function(e) {
var data = e.data;
var id = data.id;
var callback = controlCallbacks[id];
if (callback) {
callback(data);
delete controlCallbacks[id];
}
};
// Polling the status worker
var recvErrors = 0;
eventWorker.onmessage = function(e) {
// process the event and tell the event worker to listen for more events
if (handleEvent(e.data.event))
waitForEvent();
};
function waitForEvent() {
eventWorker.postMessage({ cmd: "wait_for_event" });
}
// Commands to the control worker
function voidControlMessage(cmd, callback) {
controlMessage({ cmd: cmd }, function (data) {
callback(data.status);
});
}
function loadDriver(callback) {
voidControlMessage("load_driver", callback);
}
function unloadDriver(callback) {
voidControlMessage("unload_driver", callback);
}
function startSupplicant(callback) {
voidControlMessage("start_supplicant", callback);
}
function terminateSupplicant(callback) {
doBooleanCommand("TERMINATE", "OK", callback);
}
function stopSupplicant(callback) {
voidControlMessage("stop_supplicant", callback);
}
function connectToSupplicant(callback) {
voidControlMessage("connect_to_supplicant", callback);
}
function closeSupplicantConnection(callback) {
voidControlMessage("close_supplicant_connection", callback);
}
function doCommand(request, callback) {
controlMessage({ cmd: "command", request: request }, callback);
}
function doIntCommand(request, callback) {
doCommand(request, function(data) {
callback(data.status ? -1 : (data.reply|0));
});
}
function doBooleanCommand(request, expected, callback) {
doCommand(request, function(data) {
callback(data.status ? false : (data.reply == expected));
});
}
function doStringCommand(request, callback) {
doCommand(request, function(data) {
callback(data.status ? null : data.reply);
});
}
function listNetworksCommand(callback) {
doStringCommand("LIST_NETWORKS", callback);
}
function addNetworkCommand(callback) {
doIntCommand("ADD_NETWORK", callback);
}
function setNetworkVariableCommand(netId, name, value, callback) {
doBooleanCommand("SET_NETWORK " + netId + " " + name + " " + value, "OK", callback);
}
function getNetworkVariableCommand(netId, name, callback) {
doStringCommand("GET_NETWORK " + netId + " " + name, callback);
}
function removeNetworkCommand(netId, callback) {
doBooleanCommand("REMOVE_NETWORK " + netId, "OK", callback);
}
function enableNetworkCommand(netId, disableOthers, callback) {
doBooleanCommand((disableOthers ? "SELECT_NETWORK " : "ENABLE_NETWORK ") + netId, "OK", callback);
}
function disableNetworkCommand(netId, callback) {
doBooleanCommand("DISABLE_NETWORK " + netId, "OK", callback);
}
function statusCommand(callback) {
doStringCommand("STATUS", callback);
}
function pingCommand(callback) {
doBooleanCommand("PING", "PONG", callback);
}
function scanResultsCommand(callback) {
doStringCommand("SCAN_RESULTS", callback);
}
function disconnectCommand(callback) {
doBooleanCommand("DISCONNECT", "OK", callback);
}
function reconnectCommand(callback) {
doBooleanCommand("RECONNECT", "OK", callback);
}
function reassociateCommand(callback) {
doBooleanCommand("REASSOCIATE", "OK", callback);
}
var scanModeActive = false;
function doSetScanModeCommand(setActive, callback) {
doBooleanCommand(setActive ? "DRIVER SCAN-ACTIVE" : "DRIVER SCAN-PASSIVE", "OK", callback);
}
function scanCommand(forceActive, callback) {
if (forceActive && !scanModeActive) {
doSetScanModeCommand(true, function(ok) {
ok && doBooleanCommand("SCAN", "OK", function(ok) {
ok && doSetScanModeCommand(false, callback);
});
});
return;
}
doBooleanCommand("SCAN", "OK", callback);
}
function setScanModeCommand(setActive, callback) {
scanModeActive = setActive;
doSetScanModeCommand(setActive, callback);
}
function startDriverCommand(callback) {
doBooleanCommand("DRIVER START", "OK");
}
function stopDriverCommand(callback) {
doBooleanCommand("DRIVER STOP", "OK");
}
function startPacketFiltering(callback) {
doBooleanCommand("DRIVER RXFILTER-ADD 0", "OK", function(ok) {
ok && doBooleanCommand("DRIVER RXFILTER-ADD 1", "OK", function(ok) {
ok && doBooleanCommand("DRIVER RXFILTER-ADD 3", "OK", function(ok) {
ok && doBooleanCommand("DRIVER RXFILTER-START", "OK", callback)
});
});
});
}
function stopPacketFiltering(callback) {
doBooleanCommand("DRIVER RXFILTER-STOP", "OK", function(ok) {
ok && doBooleanCommand("DRIVER RXFILTER-REMOVE 3", "OK", function(ok) {
ok && doBooleanCommand("DRIVER RXFILTER-REMOVE 1", "OK", function(ok) {
ok && doBooleanCommand("DRIVER RXFILTER-REMOVE 0", "OK", callback)
});
});
});
}
function doGetRssiCommand(cmd, callback) {
doCommand(cmd, function(data) {
var rssi = -200;
if (!data.status) {
// If we are associating, the reply is "OK".
var reply = data.reply;
if (reply != "OK") {
// Format is: <SSID> rssi XX". SSID can contain spaces.
var offset = reply.lastIndexOf("rssi ");
if (offset !== -1)
rssi = reply.substr(offset + 5) | 0;
}
}
callback(rssi);
});
}
function getRssiCommand(callback) {
doGetRssiCommand("DRIVER RSSI", callback);
}
function getRssiApproxCommand(callback) {
doGetRssiCommand("DRIVER RSSI-APPROX", callback);
}
function getLinkSpeedCommand(callback) {
doStringCommand("DRIVER LINKSPEED", function(reply) {
if (reply)
reply = reply.split(" ")[1] | 0; // Format: LinkSpeed XX
callback(reply);
});
}
function getMacAddressCommand(callback) {
doStringCommand("DRIVER MACADDR", function(reply) {
if (reply)
reply = reply.split(" ")[2]; // Format: Macaddr = XX.XX.XX.XX.XX.XX
callback(reply);
});
}
function setPowerModeCommand(mode, callback) {
doBooleanCommand("DRIVER POWERMODE " + mode, "OK", callback);
}
function getPowerModeCommand(callback) {
doStringCommand("DRIVER GETPOWER", function(reply) {
if (reply)
reply = (reply.split()[2]|0); // Format: powermode = XX
callback(reply);
});
}
function setNumAllowedChannelsCommand(numChannels, callback) {
doBooleanCommand("DRIVER SCAN-CHANNELS " + numChannels, "OK", callback);
}
function getNumAllowedChannelsCommand(callback) {
doStringCommand("DRIVER SCAN-CHANNELS", function(reply) {
if (reply)
reply = (reply.split()[2]|0); // Format: Scan-Channels = X
callback(reply);
});
}
function setBluetoothCoexistenceModeCommand(mode, callback) {
doBooleanCommand("DRIVER BTCOEXMODE " + mode, "OK", callback);
}
function setBluetoothCoexistenceScanModeCommand(mode, callback) {
doBooleanCommand("DRIVER BTCOEXSCAN-" + (mode ? "START" : "STOP"), "OK", callback);
}
function saveConfigCommand(callback) {
// Make sure we never write out a value for AP_SCAN other than 1
doBooleanCommand("AP_SCAN 1", "OK", function(ok) {
doBooleanCommand("SAVE_CONFIG", "OK", callback);
});
}
function reloadConfigCommand(callback) {
doBooleanCommand("RECONFIGURE", "OK", callback);
}
function setScanResultHandlingCommand(mode, callback) {
doBooleanCommand("AP_SCAN " + mode, "OK", callback);
}
function addToBlacklistCommand(bssid, callback) {
doBooleanCommand("BLACKLIST " + bssid, "OK", callback);
}
function clearBlacklistCommand(callback) {
doBooleanCommand("BLACKLIST clear", "OK", callback);
}
function setSuspendOptimizationsCommand(enabled, callback) {
doBooleanCommand("DRIVER SETSUSPENDOPT " + (enabled ? 0 : 1), "OK", callback);
}
function getProperty(key, defaultValue, callback) {
controlMessage({ cmd: "property_get", key: key, defaultValue: defaultValue }, function(data) {
callback(data.status < 0 ? null : data.value);
});
}
function setProperty(key, value, callback) {
controlMessage({ cmd: "property_set", key: key, value: value }, function(data) {
callback(!data.status);
});
}
function enableInterface(ifname, callback) {
controlMessage({ cmd: "ifc_enable", ifname: ifname }, function(data) {
callback(!data.status);
});
}
function disableInterface(ifname, callback) {
controlMessage({ cmd: "ifc_disable", ifname: ifname }, function(data) {
callback(!data.status);
});
}
function addHostRoute(ifname, route, callback) {
controlMessage({ cmd: "ifc_add_host_route", ifname: ifname, route: route }, function(data) {
callback(!data.status);
});
}
function removeHostRoutes(ifname, callback) {
controlMessage({ cmd: "ifc_remove_host_routes", ifname: ifname }, function(data) {
callback(!data.status);
});
}
function setDefaultRoute(ifname, route, callback) {
controlMessage({ cmd: "ifc_set_default_route", ifname: ifname, route: route }, function(data) {
callback(!data.status);
});
}
function getDefaultRoute(ifname, callback) {
controlMessage({ cmd: "ifc_get_default_route", ifname: ifname }, function(data) {
callback(!data.route);
});
}
function removeDefaultRoute(ifname, callback) {
controlMessage({ cmd: "ifc_remove_default_route", ifname: ifname }, function(data) {
callback(!data.status);
});
}
function resetConnections(ifname, callback) {
controlMessage({ cmd: "ifc_reset_connections", ifname: ifname }, function(data) {
callback(!data.status);
});
}
var dhcpInfo = null;
function runDhcp(ifname, callback) {
controlMessage({ cmd: "dhcp_do_request", ifname: ifname }, function(data) {
dhcpInfo = data.status ? null : data;
callback(dhcpInfo);
});
}
function stopDhcp(ifname, callback) {
controlMessage({ cmd: "dhcp_stop", ifname: ifname }, function(data) {
dhcpInfo = null;
notify("dhcplost");
callback(!data.status);
});
}
function releaseDhcpLease(ifname, callback) {
controlMessage({ cmd: "dhcp_release_lease", ifname: ifname }, function(data) {
dhcpInfo = null;
notify("dhcplost");
callback(!data.status);
});
}
function getDhcpError(callback) {
controlMessage({ cmd: "dhcp_get_errmsg" }, function(data) {
callback(data.error);
});
}
function configureInterface(ifname, ipaddr, mask, gateway, dns1, dns2, callback) {
controlMessage({ cmd: "ifc_configure", ifname: ifname,
ipaddr: ipaddr, mask: mask, gateway: gateway,
dns1: dns1, dns2: dns2}, function(data) {
callback(!data.status);
});
}
function runDhcpRenew(ifname, callback) {
controlMessage({ cmd: "dhcp_do_request", ifname: ifname }, function(data) {
if (!data.status)
dhcpInfo = data;
callback(data.status ? null : data);
});
}
var manager = {};
var suppressEvents = false;
function notify(eventName, eventObject) {
if (suppressEvents)
return;
var handler = manager["on" + eventName];
if (handler) {
if (!eventObject)
eventObject = ({});
handler.call(eventObject);
}
}
function notifyStateChange(fields) {
// If we're already in the COMPLETED state, we might receive events from
// the supplicant that tell us that we're re-authenticating or reminding
// us that we're associated to a network. In those cases, we don't need to
// do anything, so just ignore them.
if (manager.state === "COMPLETED" &&
fields.state !== "DISCONNECTED" &&
fields.state !== "INTERFACE_DISABLED" &&
fields.state !== "INACTIVE" &&
fields.state !== "SCANNING") {
return false;
}
fields.prevState = manager.state;
manager.state = fields.state;
notify("statechange", fields);
return true;
}
function parseStatus(status, reconnected) {
if (status === null) {
debug("Unable to get wpa supplicant's status");
return;
}
var ssid;
var bssid;
var state;
var ip_address;
var id;
var lines = status.split("\n");
for (let i = 0; i < lines.length; ++i) {
let [key, value] = lines[i].split("=");
switch (key) {
case "wpa_state":
state = value;
break;
case "ssid":
ssid = value;
break;
case "bssid":
bssid = value;
break;
case "ip_address":
ip_address = value;
break;
case "id":
id = value;
break;
}
}
if (bssid && ssid) {
manager.connectionInfo.bssid = bssid;
manager.connectionInfo.ssid = ssid;
manager.connectionInfo.id = id;
}
if (ip_address)
dhcpInfo = { ip_address: ip_address };
notifyStateChange({ state: state, fromStatus: true });
if (state === "COMPLETED")
onconnected(reconnected);
}
// try to connect to the supplicant
var connectTries = 0;
var retryTimer = null;
function connectCallback(ok) {
if (ok === 0) {
// Tell the event worker to start waiting for events.
retryTimer = null;
didConnectSupplicant(false, function(){});
return;
}
if (connectTries++ < 3) {
// try again in 5 seconds
if (!retryTimer)
retryTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
retryTimer.initWithCallback(function(timer) {
connectToSupplicant(connectCallback);
}, 5000, Ci.nsITimer.TYPE_ONE_SHOT);
return;
}
retryTimer = null;
notify("supplicantfailed");
}
manager.connectionDropped = function(callback) {
// If we got disconnected, kill the DHCP client in preparation for
// reconnection.
resetConnections(manager.ifname, function() {
stopDhcp(manager.ifname, function() {
callback();
});
});
}
manager.start = function() {
debug("detected SDK version " + sdkVersion);
// If we reconnected to an already-running supplicant, then manager.state
// will have already been updated to the supplicant's state. Otherwise, we
// started the supplicant ourselves and need to connect.
if (manager.state === "UNINITIALIZED")
connectToSupplicant(connectCallback);
}
function dhcpAfterConnect() {
// For now we do our own DHCP. In the future, this should be handed
// off to the Network Manager.
runDhcp(manager.ifname, function (data) {
if (!data) {
debug("DHCP failed to run");
notify("dhcpconnected", { info: data });
return;
}
setProperty("net." + manager.ifname + ".dns1", ipToString(data.dns1),
function(ok) {
if (!ok) {
debug("Unable to set net.<ifname>.dns1");
return;
}
setProperty("net." + manager.ifname + ".dns2", ipToString(data.dns2),
function(ok) {
if (!ok) {
debug("Unable to set net.<ifname>.dns2");
return;
}
setProperty("net." + manager.ifname + ".gw", ipToString(data.gateway),
function(ok) {
if (!ok) {
debug("Unable to set net.<ifname>.gw");
return;
}
notify("dhcpconnected", { info: data });
});
});
});
});
}
function onconnected(reconnected) {
if (!reconnected) {
dhcpAfterConnect();
return;
}
// We're in the process of reconnecting to a pre-existing wpa_supplicant.
// Check to see if there was already a DHCP process:
getProperty("init.svc.dhcpcd_" + manager.ifname, "stopped", function(value) {
if (value === "running") {
notify("dhcpconnected");
return;
}
// Some phones use a different property name for the dhcpcd daemon.
getProperty("init.svc.dhcpcd", "stopped", function(value) {
if (value === "running") {
notify("dhcpconnected");
return;
}
dhcpAfterConnect();
});
});
}
var supplicantStatesMap = (sdkVersion >= 15) ?
["DISCONNECTED", "INTERFACE_DISABLED", "INACTIVE", "SCANNING",
"AUTHENTICATING", "ASSOCIATING", "ASSOCIATED", "FOUR_WAY_HANDSHAKE",
"GROUP_HANDSHAKE", "COMPLETED"]
:
["DISCONNECTED", "INACTIVE", "SCANNING", "ASSOCIATING",
"ASSOCIATED", "FOUR_WAY_HANDSHAKE", "GROUP_HANDSHAKE",
"COMPLETED", "DORMANT", "UNINITIALIZED"];
var driverEventMap = { STOPPED: "driverstopped", STARTED: "driverstarted", HANGED: "driverhung" };
// handle events sent to us by the event worker
function handleEvent(event) {
debug("Event coming in: " + event);
if (event.indexOf("CTRL-EVENT-") !== 0) {
if (event.indexOf("WPA:") == 0 &&
event.indexOf("pre-shared key may be incorrect") != -1) {
notify("passwordmaybeincorrect");
}
// This is ugly, but we need to grab the SSID here. While we're at it,
// we grab the BSSID as well.
var match = /Trying to associate with ([^ ]+) \(SSID='([^']+)' freq=\d+ MHz\)/.exec(event);
if (match) {
debug("Matched: " + match[1] + " and " + match[2]);
manager.connectionInfo.bssid = match[1];
manager.connectionInfo.ssid = match[2];
}
return true;
}
var space = event.indexOf(" ");
var eventData = event.substr(0, space + 1);
if (eventData.indexOf("CTRL-EVENT-STATE-CHANGE") === 0) {
// Parse the event data
var fields = {};
var tokens = event.substr(space + 1).split(" ");
for (var n = 0; n < tokens.length; ++n) {
var kv = tokens[n].split("=");
if (kv.length === 2)
fields[kv[0]] = kv[1];
}
if (!("state" in fields))
return true;
fields.state = supplicantStatesMap[fields.state];
// The BSSID field is only valid in the ASSOCIATING and ASSOCIATED
// states, except when we "reauth", except this seems to depend on the
// driver, so simply check to make sure that we don't have a null BSSID.
if (fields.BSSID !== "00:00:00:00:00:00")
manager.connectionInfo.bssid = fields.BSSID;
notifyStateChange(fields);
return true;
}
if (eventData.indexOf("CTRL-EVENT-DRIVER-STATE") === 0) {
var handlerName = driverEventMap[eventData];
if (handlerName)
notify(handlerName);
return true;
}
if (eventData.indexOf("CTRL-EVENT-TERMINATING") === 0) {
// If the monitor socket is closed, we have already stopped the
// supplicant and we can stop waiting for more events and
// simply exit here (we don't have to notify about having lost
// the connection).
if (eventData.indexOf("connection closed") !== -1) {
notify("supplicantlost");
return false;
}
// As long we haven't seen too many recv errors yet, we
// will keep going for a bit longer
if (eventData.indexOf("recv error") !== -1 && ++recvErrors < 10)
return true;
notifyStateChange({ state: "DISCONNECTED", BSSID: null, id: -1 });
notify("supplicantlost");
return false;
}
if (eventData.indexOf("CTRL-EVENT-DISCONNECTED") === 0) {
manager.connectionInfo.bssid = null;
manager.connectionInfo.ssid = null;
manager.connectionInfo.id = -1;
return true;
}
if (eventData.indexOf("CTRL-EVENT-CONNECTED") === 0) {
// Format: CTRL-EVENT-CONNECTED - Connection to 00:1e:58:ec:d5:6d completed (reauth) [id=1 id_str=]
var bssid = eventData.split(" ")[4];
var id = eventData.substr(eventData.indexOf("id=")).split(" ")[0];
// Don't call onconnected if we ignored this state change (since we were
// already connected).
if (notifyStateChange({ state: "CONNECTED", BSSID: bssid, id: id }))
onconnected(false);
return true;
}
if (eventData.indexOf("CTRL-EVENT-SCAN-RESULTS") === 0) {
debug("Notifying of scan results available");
notify("scanresultsavailable");
return true;
}
// unknown event
return true;
}
const SUPP_PROP = "init.svc.wpa_supplicant";
function killSupplicant(callback) {
// It is interesting to note that this function does exactly what
// wifi_stop_supplicant does. Unforunately, on the Galaxy S2, Samsung
// changed that function in a way that means that it doesn't recognize
// wpa_supplicant as already running. Therefore, we have to roll our own
// version here.
var count = 0;
var timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
function tick() {
getProperty(SUPP_PROP, "stopped", function (result) {
if (result === null) {
callback();
return;
}
if (result === "stopped" || ++count >= 5) {
// Either we succeeded or ran out of time.
timer = null;
callback();
return;
}
// Else it's still running, continue waiting.
timer.initWithCallback(tick, 1000, Ci.nsITimer.TYPE_ONE_SHOT);
});
}
setProperty("ctl.stop", "wpa_supplicant", tick);
}
function didConnectSupplicant(reconnected, callback) {
waitForEvent();
notify("supplicantconnection");
// Load up the supplicant state.
statusCommand(function(status) {
parseStatus(status, reconnected);
callback();
});
}
function prepareForStartup(callback) {
// First, check to see if there's a wpa_supplicant running that we can
// connect to.
getProperty(SUPP_PROP, "stopped", function (value) {
if (value !== "running") {
stopDhcp(manager.ifname, function() { callback(false) });
return;
}
// It's running, try to reconnect to it.
connectToSupplicant(function (retval) {
if (retval === 0) {
// Successfully reconnected! Don't do anything else.
debug("Successfully connected!");
manager.supplicantStarted = true;
// It is important that we call parseStatus (in
// didConnectSupplicant) before calling the callback here.
// Otherwise, WifiManager.start will reconnect to it.
didConnectSupplicant(true, function() { callback(true) });
return;
}
debug("Didn't connect, trying other method.");
suppressEvents = true;
stopDhcp(manager.ifname, function() {
// Ignore any errors.
killSupplicant(function() {
suppressEvents = false;
callback(false);
});
});
});
});
}
// Initial state
manager.state = "UNINITIALIZED";
manager.enabled = false;
manager.supplicantStarted = false;
manager.connectionInfo = { ssid: null, bssid: null, id: -1 };
// Public interface of the wifi service
manager.setWifiEnabled = function(enable, callback) {
if (enabled === manager.enabled) {
callback("no change");
return;
}
if (enable) {
// Kill any existing connections if necessary.
getProperty("wifi.interface", "tiwlan0", function (ifname) {
if (!ifname) {
callback(-1);
return;
}
manager.ifname = ifname;
// Register as network interface.
WifiNetworkInterface.name = ifname;
if (!WifiNetworkInterface.registered) {
gNetworkManager.registerNetworkInterface(WifiNetworkInterface);
WifiNetworkInterface.registered = true;
}
WifiNetworkInterface.state = Ci.nsINetworkInterface.NETWORK_STATE_DISCONNECTED;
Services.obs.notifyObservers(WifiNetworkInterface,
kNetworkInterfaceStateChangedTopic,
null);
prepareForStartup(function(already_connected) {
if (already_connected) {
callback(0);
return;
}
loadDriver(function (status) {
if (status < 0) {
callback(status);
return;
}
let timer;
function doStartSupplicant() {
timer = null;
startSupplicant(function (status) {
if (status < 0) {
unloadDriver(function() {
callback(status);
});
return;
}
manager.supplicantStarted = true;
enableInterface(ifname, function (ok) {
callback(ok ? 0 : -1);
});
});
}
// Driver startup on the otoro takes longer than it takes for us
// to return from loadDriver, so wait 2 seconds before starting
// the supplicant to give it a chance to start.
if (device === "otoro") {
timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
timer.init(doStartSupplicant, 2000, Ci.nsITimer.TYPE_ONE_SHOT);
} else {
doStartSupplicant();
}
});
});
});
} else {
// Note these following calls ignore errors. If we fail to kill the
// supplicant gracefully, then we need to continue telling it to die
// until it does.
terminateSupplicant(function (ok) {
manager.connectionDropped(function () {
stopSupplicant(function (status) {
manager.state = "UNINITIALIZED";
closeSupplicantConnection(function () {
disableInterface(manager.ifname, function (ok) {
unloadDriver(callback);
});
});
});
});
});
}
}
manager.disconnect = disconnectCommand;
manager.reconnect = reconnectCommand;
manager.reassociate = reassociateCommand;
var networkConfigurationFields = [
"ssid", "bssid", "psk", "wep_key0", "wep_key1", "wep_key2", "wep_key3",
"wep_tx_keyidx", "priority", "key_mgmt", "scan_ssid", "disabled",
"identity", "password", "auth_alg"
];
manager.getNetworkConfiguration = function(config, callback) {
var netId = config.netId;
var done = 0;
for (var n = 0; n < networkConfigurationFields.length; ++n) {
let fieldName = networkConfigurationFields[n];
getNetworkVariableCommand(netId, fieldName, function(value) {
if (value !== null)
config[fieldName] = value;
if (++done == networkConfigurationFields.length)
callback(config);
});
}
}
manager.setNetworkConfiguration = function(config, callback) {
var netId = config.netId;
var done = 0;
var errors = 0;
for (var n = 0; n < networkConfigurationFields.length; ++n) {
let fieldName = networkConfigurationFields[n];
if (!(fieldName in config) ||
// These fields are special: We can't retrieve them from the
// supplicant, and often we have a star in our config. In that case,
// we need to avoid overwriting the correct password with a *.
(fieldName === "password" ||
fieldName === "wep_key0" ||
fieldName === "psk") &&
config[fieldName] === '*') {
++done;
} else {
setNetworkVariableCommand(netId, fieldName, config[fieldName], function(ok) {
if (!ok)
++errors;
if (++done == networkConfigurationFields.length)
callback(errors == 0);
});
}
}
// If config didn't contain any of the fields we want, don't lose the error callback
if (done == networkConfigurationFields.length)
callback(false);
}
manager.getConfiguredNetworks = function(callback) {
listNetworksCommand(function (reply) {
var networks = Object.create(null);
var lines = reply.split("\n");
if (lines.length === 1) {
// We need to make sure we call the callback even if there are no
// configured networks.
callback(networks);
return;
}
var done = 0;
var errors = 0;
for (var n = 1; n < lines.length; ++n) {
var result = lines[n].split("\t");
var netId = result[0];
var config = networks[netId] = { netId: netId };
switch (result[3]) {
case "[CURRENT]":
config.status = "CURRENT";
break;
case "[DISABLED]":
config.status = "DISABLED";
break;
default:
config.status = "ENABLED";
break;
}
manager.getNetworkConfiguration(config, function (ok) {
if (!ok)
++errors;
if (++done == lines.length - 1) {
if (errors) {
// If an error occured, delete the new netId
removeNetworkCommand(netId, function() {
callback(null);
});
} else {
callback(networks);
}
}
});
}
});
}
manager.addNetwork = function(config, callback) {
addNetworkCommand(function (netId) {
config.netId = netId;
manager.setNetworkConfiguration(config, function (ok) {
if (!ok) {
removeNetworkCommand(netId, function() { callback(false); });
return;
}
callback(ok);
});
});
}
manager.updateNetwork = function(config, callback) {
manager.setNetworkConfiguration(config, callback);
}
manager.removeNetwork = function(netId, callback) {
removeNetworkCommand(netId, callback);
}
function ipToString(n) {
return String((n >> 0) & 0xFF) + "." +
((n >> 8) & 0xFF) + "." +
((n >> 16) & 0xFF) + "." +
((n >> 24) & 0xFF);
}
manager.saveConfig = function(callback) {
saveConfigCommand(callback);
}
manager.enableNetwork = function(netId, disableOthers, callback) {
enableNetworkCommand(netId, disableOthers, callback);
}
manager.disableNetwork = function(netId, callback) {
disableNetworkCommand(netId, callback);
}
manager.getMacAddress = getMacAddressCommand;
manager.getScanResults = scanResultsCommand;
manager.setScanMode = function(mode, callback) {
setScanModeCommand(mode === "active", callback);
}
manager.scan = scanCommand;
manager.getRssiApprox = getRssiApproxCommand;
manager.getLinkSpeed = getLinkSpeedCommand;
manager.getDhcpInfo = function() { return dhcpInfo; }
return manager;
})();
function getKeyManagement(flags) {
var types = [];
if (!flags)
return types;
if (/\[WPA2?-PSK/.test(flags))
types.push("WPA-PSK");
if (/\[WPA2?-EAP/.test(flags))
types.push("WPA-EAP");
if (/\[WEP/.test(flags))
types.push("WEP");
return types;
}
// These constants shamelessly ripped from WifiManager.java
// strength is the value returned by scan_results. It is nominally in dB. We
// transform it into a percentage for clients looking to simply show a
// relative indication of the strength of a network.
const MIN_RSSI = -100;
const MAX_RSSI = -55;
function calculateSignal(strength) {
// Some wifi drivers represent their signal strengths as 8-bit integers, so
// in order to avoid negative numbers, they add 256 to the actual values.
// While we don't *know* that this is the case here, we make an educated
// guess.
if (strength > 0)
strength -= 256;
if (strength <= MIN_RSSI)
return 0;
if (strength >= MAX_RSSI)
return 100;
return Math.floor(((strength - MIN_RSSI) / (MAX_RSSI - MIN_RSSI)) * 100);
}
function ScanResult(ssid, bssid, flags, signal) {
this.ssid = ssid;
this.bssid = bssid;
this.capabilities = getKeyManagement(flags);
this.signalStrength = signal;
this.relSignalStrength = calculateSignal(Number(signal));
}
function quote(s) {
return '"' + s + '"';
}
function dequote(s) {
if (s[0] != '"' || s[s.length - 1] != '"')
throw "Invalid argument, not a quoted string: " + s;
return s.substr(1, s.length - 2);
}
function isWepHexKey(s) {
if (s.length != 10 && s.length != 26 && s.length != 58)
return false;
return !/[^a-fA-F0-9]/.test(s);
}
let WifiNetworkInterface = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsINetworkInterface]),
registered: false,
// nsINetworkInterface
NETWORK_STATE_UNKNOWN: Ci.nsINetworkInterface.NETWORK_STATE_UNKNOWN,
NETWORK_STATE_CONNECTING: Ci.nsINetworkInterface.CONNECTING,
NETWORK_STATE_CONNECTED: Ci.nsINetworkInterface.CONNECTED,
NETWORK_STATE_SUSPENDED: Ci.nsINetworkInterface.SUSPENDED,
NETWORK_STATE_DISCONNECTING: Ci.nsINetworkInterface.DISCONNECTING,
NETWORK_STATE_DISCONNECTED: Ci.nsINetworkInterface.DISCONNECTED,
state: Ci.nsINetworkInterface.NETWORK_STATE_UNKNOWN,
NETWORK_TYPE_WIFI: Ci.nsINetworkInterface.NETWORK_TYPE_WIFI,
NETWORK_TYPE_MOBILE: Ci.nsINetworkInterface.NETWORK_TYPE_MOBILE,
NETWORK_TYPE_MOBILE_MMS: Ci.nsINetworkInterface.NETWORK_TYPE_MOBILE_MMS,
type: Ci.nsINetworkInterface.NETWORK_TYPE_WIFI,
name: null,
// For now we do our own DHCP. In the future this should be handed off
// to the Network Manager.
dhcp: false,
};
// TODO Make the difference between a DOM-based network object and our
// networks objects much clearer.
let netToDOM;
let netFromDOM;
function WifiWorker() {
var self = this;
this._mm = Cc["@mozilla.org/parentprocessmessagemanager;1"].getService(Ci.nsIFrameMessageManager);
const messages = ["WifiManager:setEnabled", "WifiManager:getNetworks",
"WifiManager:associate", "WifiManager:forget",
"WifiManager:getState"];
messages.forEach((function(msgName) {
this._mm.addMessageListener(msgName, this);
}).bind(this));
this.wantScanResults = [];
this._needToEnableNetworks = false;
this._highestPriority = -1;
// networks is a map from SSID -> a scan result.
this.networks = Object.create(null);
// configuredNetworks is a map from SSID -> our view of a network. It only
// lists networks known to the wpa_supplicant. The SSID field (and other
// fields) are quoted for ease of use with WifiManager commands.
// Note that we don't have to worry about escaping embedded quotes since in
// all cases, the supplicant will take the last quotation that we pass it as
// the end of the string.
this.configuredNetworks = Object.create(null);
this.currentNetwork = null;
this._lastConnectionInfo = null;
this._connectionInfoTimer = null;
this._reconnectOnDisconnect = false;
// A list of requests to turn wifi on or off.
this._stateRequests = [];
// Given a connection status network, takes a network from
// self.configuredNetworks and prepares it for the DOM.
netToDOM = function(net) {
var pub = { ssid: dequote(net.ssid) };
if (net.netId)
pub.known = true;
return pub;
};
netFromDOM = function(net, configured) {
// Takes a network from the DOM and makes it suitable for insertion into
// self.configuredNetworks (that is calling addNetwork will do the right
// thing).
// NB: Modifies net in place: safe since we don't share objects between
// the dom and the chrome code.
// Things that are useful for the UI but not to us.
delete net.bssid;
delete net.signalStrength;
delete net.relSignalStrength;
delete net.capabilities;
if (!configured)
configured = {};
net.ssid = quote(net.ssid);
let wep = false;
if ("keyManagement" in net) {
if (net.keyManagement === "WEP") {
wep = true;
net.keyManagement = "NONE";
}
configured.key_mgmt = net.key_mgmt = net.keyManagement; // WPA2-PSK, WPA-PSK, etc.
delete net.keyManagement;
} else {
configured.key_mgmt = net.key_mgmt = "NONE";
}
function checkAssign(name, checkStar) {
if (name in net) {
let value = net[name];
if (!value || (checkStar && value === '*')) {
if (name in configured)
net[name] = configured[name];
else
delete net[name];
} else {
configured[name] = net[name] = quote(value);
}
}
}
checkAssign("psk", true);
checkAssign("identity", false);
checkAssign("password", true);
if (wep && net.wep && net.wep != '*') {
configured.wep_key0 = net.wep_key0 = isWepHexKey(net.wep) ? net.wep : quote(net.wep);
configured.auth_alg = net.auth_alg = "OPEN SHARED";
}
return net;
};
WifiManager.onsupplicantconnection = function() {
debug("Connected to supplicant");
WifiManager.enabled = true;
WifiManager.getMacAddress(function (mac) {
debug("Got mac: " + mac);
});
self._reloadConfiguredNetworks(function(ok) {
// Prime this.networks.
if (!ok)
return;
self.waitForScan(function firstScan() {});
});
// Check if we need to fire request replies first:
if (self._stateRequests.length > 0)
self._notifyAfterStateChange(true, true);
// Notify everybody, even if they didn't ask us to come up.
self._fireEvent("wifiUp", {});
}
WifiManager.onsupplicantlost = function() {
WifiManager.enabled = WifiManager.supplicantStarted = false;
debug("Supplicant died!");
// Check if we need to fire request replies first:
if (self._stateRequests.length > 0)
self._notifyAfterStateChange(true, false);
// Notify everybody, even if they didn't ask us to come up.
self._fireEvent("wifiDown", {});
}
WifiManager.onsupplicantfailed = function() {
WifiManager.enabled = WifiManager.supplicantStarted = false;
debug("Couldn't connect to supplicant");
if (self._stateRequests.length > 0)
self._notifyAfterStateChange(false, false);
}
WifiManager.onstatechange = function() {
debug("State change: " + this.prevState + " -> " + this.state);
if (self._connectionInfoTimer &&
this.state !== "CONNECTED" &&
this.state !== "COMPLETED") {
self._stopConnectionInfoTimer();
}
switch (this.state) {
case "DORMANT":
// The dormant state is a bad state to be in since we won't
// automatically connect. Try to knock us out of it. We only
// hit this state when we've failed to run DHCP, so trying
// again isn't the worst thing we can do. Eventually, we'll
// need to detect if we're looping in this state and bail out.
WifiManager.reconnect(function(){});
break;
case "ASSOCIATING":
// id has not yet been filled in, so we can only report the ssid and
// bssid.
self.currentNetwork =
{ bssid: WifiManager.connectionInfo.bssid,
ssid: quote(WifiManager.connectionInfo.ssid) };
self._fireEvent("onconnecting", { network: netToDOM(self.currentNetwork) });
break;
case "ASSOCIATED":
if (!self.currentNetwork) {
self.currentNetwork =
{ bssid: WifiManager.connectionInfo.bssid,
ssid: quote(WifiManager.connectionInfo.ssid) };
}
self.currentNetwork.netId = this.id;
WifiManager.getNetworkConfiguration(self.currentNetwork, function (){});
break;
case "COMPLETED":
// Now that we've successfully completed the connection, re-enable the
// rest of our networks.
// XXX Need to do this eventually if the user entered an incorrect
// password. For now, we require user interaction to break the loop and
// select a better network!
if (self._needToEnableNetworks) {
self._enableAllNetworks();
self._needToEnableNetworks = false;
}
// We get the ASSOCIATED event when we've associated but not connected, so
// wait until the handshake is complete.
if (this.fromStatus) {
// In this case, we connected to an already-connected wpa_supplicant,
// because of that we need to gather information about the current
// network here.
self.currentNetwork = { ssid: quote(WifiManager.connectionInfo.ssid),
netId: WifiManager.connectionInfo.id };
WifiManager.getNetworkConfiguration(self.currentNetwork, function(){});
}
self._startConnectionInfoTimer();
self._fireEvent("onassociate", { network: netToDOM(self.currentNetwork) });
break;
case "CONNECTED":
break;
case "DISCONNECTED":
self._fireEvent("ondisconnect", {});
self.currentNetwork = null;
WifiManager.connectionDropped(function() {
// We've disconnected from a network because of a call to forgetNetwork.
// Reconnect to the next available network (if any).
if (self._reconnectOnDisconnect) {
self._reconnectOnDisconnect = false;
WifiManager.reconnect(function(){});
}
});
WifiNetworkInterface.state =
Ci.nsINetworkInterface.NETWORK_STATE_DISCONNECTED;
Services.obs.notifyObservers(WifiNetworkInterface,
kNetworkInterfaceStateChangedTopic,
null);
break;
}
};
WifiManager.ondhcpconnected = function() {
if (this.info) {
WifiNetworkInterface.state =
Ci.nsINetworkInterface.NETWORK_STATE_CONNECTED;
Services.obs.notifyObservers(WifiNetworkInterface,
kNetworkInterfaceStateChangedTopic,
null);
self._fireEvent("onconnect", { network: netToDOM(self.currentNetwork) });
} else {
WifiManager.disconnect(function(){});
}
};
WifiManager.onscanresultsavailable = function() {
if (self.wantScanResults.length === 0) {
debug("Scan results available, but we don't need them");
return;
}
debug("Scan results are available! Asking for them.");
WifiManager.getScanResults(function(r) {
// Failure.
if (!r) {
self.wantScanResults.forEach(function(callback) { callback(null) });
self.wantScanResults = [];
return;
}
// Now that we have scan results, there's no more need to continue
// scanning. Ignore any errors from this command.
WifiManager.setScanMode("inactive", function() {});
let lines = r.split("\n");
// NB: Skip the header line.
self.networks = Object.create(null);
for (let i = 1; i < lines.length; ++i) {
// bssid / frequency / signal level / flags / ssid
var match = /([\S]+)\s+([\S]+)\s+([\S]+)\s+(\[[\S]+\])?\s+(.*)/.exec(lines[i]);
if (match && match[5]) {
let ssid = match[5];
// If this is the first time that we've seen this SSID in the scan
// results, add it to the list along with any other information.
// Also, we use the highest signal strength that we see.
let network = self.networks[ssid];
if (!network) {
network = self.networks[ssid] =
new ScanResult(ssid, match[1], match[4], match[3]);
if (ssid in self.configuredNetworks) {
let known = self.configuredNetworks[ssid];
network.known = true;
if ("identity" in known && known.identity)
network.identity = dequote(known.identity);
// Note: we don't hand out passwords here! The * marks that there
// is a password that we're hiding.
if (("psk" in known && known.psk) ||
("password" in known && known.password) ||
("wep_key0" in known && known.wep_key0)) {
network.password = "*";
}
}
}
if (network.bssid === WifiManager.connectionInfo.bssid)
network.connected = true;
let signal = calculateSignal(Number(match[3]));
if (signal > network.relSignalStrength)
network.relSignalStrength = signal;
} else if (!match) {
debug("Match didn't find anything for: " + lines[i]);
}
}
self.wantScanResults.forEach(function(callback) { callback(self.networks) });
self.wantScanResults = [];
});
}
WifiManager.setWifiEnabled(true, function (ok) {
if (ok === 0)
WifiManager.start();
else
debug("Couldn't start Wifi");
});
debug("Wifi starting");
}
function translateState(state) {
switch (state) {
case "INTERFACE_DISABLED":
case "INACTIVE":
case "SCANNING":
case "DISCONNECTED":
default:
return "disconnected";
case "AUTHENTICATING":
case "ASSOCIATING":
case "ASSOCIATED":
case "FOUR_WAY_HANDSHAKE":
case "GROUP_HANDSHAKE":
return "connecting";
case "COMPLETED":
return WifiManager.getDhcpInfo() ? "connected" : "associated";
}
}
WifiWorker.prototype = {
classID: WIFIWORKER_CID,
classInfo: XPCOMUtils.generateCI({classID: WIFIWORKER_CID,
contractID: WIFIWORKER_CONTRACTID,
classDescription: "WifiWorker",
interfaces: [Ci.nsIWorkerHolder,
Ci.nsIWifi]}),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWorkerHolder,
Ci.nsIWifi]),
// Internal methods.
waitForScan: function(callback) {
this.wantScanResults.push(callback);
},
// In order to select a specific network, we disable the rest of the
// networks known to us. However, in general, we want the supplicant to
// connect to which ever network it thinks is best, so when we select the
// proper network (or fail to), we need to re-enable the rest.
_enableAllNetworks: function() {
for each (let net in this.configuredNetworks) {
WifiManager.enableNetwork(net.netId, false, function(ok) {
net.disabled = ok ? 1 : 0;
});
}
},
_startConnectionInfoTimer: function() {
if (this._connectionInfoTimer)
return;
var self = this;
function getConnectionInformation() {
WifiManager.getRssiApprox(function(rssi) {
// See comments in calculateSignal for information about this.
if (rssi > 0)
rssi -= 256;
if (rssi <= MIN_RSSI)
rssi = MIN_RSSI;
else if (rssi >= MAX_RSSI)
rssi = MAX_RSSI;
WifiManager.getLinkSpeed(function(linkspeed) {
let info = { signalStrength: rssi,
relSignalStrength: calculateSignal(rssi),
linkSpeed: linkspeed };
let last = self._lastConnectionInfo;
// Only fire the event if the link speed changed or the signal
// strength changed by more than 10%.
function tensPlace(percent) ((percent / 10) | 0)
if (last && last.linkSpeed === info.linkSpeed &&
tensPlace(last.relSignalStrength) === tensPlace(info.relSignalStrength)) {
return;
}
self._lastConnectionInfo = info;
self._fireEvent("connectionInfoUpdate", info);
});
});
}
// Prime our _lastConnectionInfo immediately and fire the event at the
// same time.
getConnectionInformation();
// Now, set up the timer for regular updates.
this._connectionInfoTimer =
Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
this._connectionInfoTimer.init(getConnectionInformation, 5000,
Ci.nsITimer.TYPE_REPEATING_SLACK);
},
_stopConnectionInfoTimer: function() {
if (!this._connectionInfoTimer)
return;
this._connectionInfoTimer.cancel();
this._connectionInfoTimer = null;
this._lastConnectionInfo = null;
},
_reloadConfiguredNetworks: function(callback) {
WifiManager.getConfiguredNetworks((function(networks) {
if (!networks) {
debug("Unable to get configured networks");
callback(false);
return;
}
this._highestPriority = -1;
// Convert between netId-based and ssid-based indexing.
for (let net in networks) {
let network = networks[net];
if (!network.ssid) {
delete networks[net]; // TODO support these?
continue;
}
if (network.priority && network.priority > this._highestPriority)
this._highestPriority = network.priority;
networks[dequote(network.ssid)] = network;
delete networks[net];
}
this.configuredNetworks = networks;
callback(true);
}).bind(this));
},
// Important side effect: calls WifiManager.saveConfig.
_reprioritizeNetworks: function(callback) {
// First, sort the networks in orer of their priority.
var ordered = Object.getOwnPropertyNames(this.configuredNetworks);
let self = this;
ordered.sort(function(a, b) {
var neta = self.configuredNetworks[a],
netb = self.configuredNetworks[b];
// Sort unsorted networks to the end of the list.
if (isNaN(neta.priority))
return isNaN(netb.priority) ? 0 : 1;
if (isNaN(netb.priority))
return -1;
return netb.priority - neta.priority;
});
// Skip unsorted networks.
let newPriority = 0, i;
for (i = ordered.length - 1; i >= 0; --i) {
if (!isNaN(this.configuredNetworks[ordered[i]].priority))
break;
}
// No networks we care about?
if (i < 0) {
WifiManager.saveConfig(callback);
return;
}
// Now assign priorities from 0 to length, starting with the smallest
// priority and heading towards the highest (note the dependency between
// total and i here).
let done = 0, errors = 0, total = i + 1;
for (; i >= 0; --i) {
let network = this.configuredNetworks[ordered[i]];
network.priority = newPriority++;
// Note: networkUpdated declared below since it happens logically after
// this loop.
WifiManager.updateNetwork(network, networkUpdated);
}
function networkUpdated(ok) {
if (!ok)
++errors;
if (++done === total) {
if (errors > 0) {
callback(false);
return;
}
WifiManager.saveConfig(function(ok) {
if (!ok) {
callback(false);
return;
}
self._reloadConfiguredNetworks(function(ok) {
callback(ok);
});
});
}
}
},
// nsIWifi
_fireEvent: function(message, data) {
this._mm.sendAsyncMessage("WifiManager:" + message, data);
},
_sendMessage: function(message, success, data, rid, mid) {
this._mm.sendAsyncMessage(message + (success ? ":OK" : ":NO"),
{ data: data, rid: rid, mid: mid });
},
receiveMessage: function MessageManager_receiveMessage(aMessage) {
let msg = aMessage.json;
switch (aMessage.name) {
case "WifiManager:setEnabled":
this.setWifiEnabled(msg.data, msg.rid, msg.mid);
break;
case "WifiManager:getNetworks":
this.getNetworks(msg.rid, msg.mid);
break;
case "WifiManager:associate":
this.associate(msg.data, msg.rid, msg.mid);
break;
case "WifiManager:forget":
this.forget(msg.data, msg.rid, msg.mid);
break;
case "WifiManager:getState": {
let net = this.currentNetwork ? netToDOM(this.currentNetwork) : null;
return { network: net,
connectionInfo: this._lastConnectionInfo,
enabled: WifiManager.enabled,
status: translateState(WifiManager.state) };
}
}
},
getNetworks: function(rid, mid) {
const message = "WifiManager:getNetworks:Return";
if (WifiManager.state === "UNINITIALIZED") {
this._sendMessage(message, false, "Wifi is disabled", rid, mid);
return;
}
this.waitForScan((function (networks) {
this._sendMessage(message, networks !== null, networks, rid, mid);
}).bind(this));
WifiManager.scan(true, function() {});
},
_notifyAfterStateChange: function(success, newState) {
// First, notify all of the requests that were trying to make this change.
let state = this._stateRequests[0].enabled;
// If the new state is not the same as state, then we weren't processing
// the first request (we were racing somehow) so don't notify.
if (!success || state === newState) {
do {
let req = this._stateRequests.shift();
this._sendMessage("WifiManager:setEnabled:Return",
success, state, req.rid, req.mid);
// Don't remove more than one request if the previous one failed.
} while (success &&
this._stateRequests.length &&
this._stateRequests[0].enabled === state);
}
// If there were requests queued after this one, run them.
if (this._stateRequests.length > 0) {
let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
let self = this;
timer.initWithCallback(function(timer) {
WifiManager.setWifiEnabled(self._stateRequests[0].enabled,
self._setWifiEnabledCallback.bind(this));
timer = null;
}, 1000, Ci.nsITimer.TYPE_ONE_SHOT);
}
},
_setWifiEnabledCallback: function(status) {
if (status === "no change") {
this._notifyAfterStateChange(true, this._stateRequests[0].enabled);
return;
}
if (status) {
// Don't call notifyAndContinue because we don't want to skip another
// attempt to turn wifi on or off if this one failed.
this._notifyAfterStateChange(false, this._stateRequests[0].enabled);
return;
}
// If we're enabling ourselves, then wait until we've connected to the
// supplicant to notify. If we're disabling, we take care of this in
// supplicantlost.
if (WifiManager.supplicantStarted)
WifiManager.start();
},
setWifiEnabled: function(enable, rid, mid) {
// There are two problems that we're trying to solve here:
// - If we get multiple requests to turn on and off wifi before the
// current request has finished, then we need to queue up the requests
// and handle each on/off request in turn.
// - Because we can't pass a callback to WifiManager.start, we need to
// have a way to communicate with our onsupplicantconnection callback.
this._stateRequests.push({ enabled: enable, rid: rid, mid: mid });
if (this._stateRequests.length === 1)
WifiManager.setWifiEnabled(enable, this._setWifiEnabledCallback.bind(this));
},
associate: function(network, rid, mid) {
const MAX_PRIORITY = 9999;
const message = "WifiManager:associate:Return";
if (WifiManager.state === "UNINITIALIZED") {
this._sendMessage(message, false, "Wifi is disabled", rid, mid);
return;
}
let privnet = network;
let self = this;
function networkReady() {
// saveConfig now before we disable most of the other networks.
function selectAndConnect() {
WifiManager.enableNetwork(privnet.netId, true, function (ok) {
if (ok)
self._needToEnableNetworks = true;
if (WifiManager.state === "DISCONNECTED" ||
WifiManager.state === "SCANNING") {
WifiManager.reconnect(function (ok) {
self._sendMessage(message, ok, ok, rid, mid);
});
} else {
self._sendMessage(message, ok, ok, rid, mid);
}
});
}
if (self._highestPriority >= MAX_PRIORITY)
self._reprioritizeNetworks(selectAndConnect);
else
WifiManager.saveConfig(selectAndConnect);
}
let ssid = privnet.ssid;
let configured;
if (ssid in this.configuredNetworks)
configured = this.configuredNetworks[ssid];
netFromDOM(privnet, configured);
privnet.priority = ++this._highestPriority;
if (configured) {
privnet.netId = configured.netId;
WifiManager.updateNetwork(privnet, (function(ok) {
if (!ok) {
this._sendMessage(message, false, "Network is misconfigured", rid, mid);
return;
}
networkReady();
}).bind(this));
} else {
// networkReady, above, calls saveConfig. We want to remember the new
// network as being enabled, which isn't the default, so we explicitly
// set it to being "enabled" before we add it and save the
// configuration.
privnet.disabled = 0;
WifiManager.addNetwork(privnet, (function(ok) {
if (!ok) {
this._sendMessage(message, false, "Network is misconfigured", rid, mid);
return;
}
this.configuredNetworks[ssid] = privnet;
networkReady();
}).bind(this));
}
},
forget: function(network, rid, mid) {
const message = "WifiManager:forget:Return";
if (WifiManager.state === "UNINITIALIZED") {
this._sendMessage(message, false, "Wifi is disabled", rid, mid);
return;
}
let ssid = network.ssid;
if (!(ssid in this.configuredNetworks)) {
this._sendMessage(message, false, "Trying to forget an unknown network", rid, mid);
return;
}
let self = this;
let configured = this.configuredNetworks[ssid];
this._reconnectOnDisconnect = (this.currentNetwork &&
(this.currentNetwork.ssid === ssid));
WifiManager.removeNetwork(configured.netId, function(ok) {
if (!ok) {
self._sendMessage(message, false, "Unable to remove the network", rid, mid);
self._reconnectOnDisconnect = false;
return;
}
WifiManager.saveConfig(function() {
self._reloadConfiguredNetworks(function() {
self._sendMessage(message, true, true, rid, mid);
});
});
});
},
// This is a bit ugly, but works. In particular, this depends on the fact
// that RadioManager never actually tries to get the worker from us.
get worker() { throw "Not implemented"; },
shutdown: function() {
debug("shutting down ...");
this.setWifiEnabled(false);
}
};
const NSGetFactory = XPCOMUtils.generateNSGetFactory([WifiWorker]);
let debug;
if (DEBUG) {
debug = function (s) {
dump("-*- WifiWorker component: " + s + "\n");
};
} else {
debug = function (s) {};
}