зеркало из https://github.com/mozilla/pjs.git
449 строки
16 KiB
JavaScript
Executable File
449 строки
16 KiB
JavaScript
Executable File
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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const Ci = Components.interfaces;
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const Cc = Components.classes;
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var gLoggingEnabled = false;
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var gTestingEnabled = false;
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function nowInSeconds()
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{
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return Date.now() / 1000;
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}
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function LOG(aMsg) {
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if (gLoggingEnabled)
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{
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aMsg = "*** WIFI GEO: " + aMsg + "\n";
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Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService).logStringMessage(aMsg);
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dump(aMsg);
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}
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}
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function WifiGeoAddressObject(streetNumber, street, premises, city, county, region, country, countryCode, postalCode) {
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this.streetNumber = streetNumber;
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this.street = street;
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this.premises = premises;
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this.city = city;
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this.county = county;
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this.region = region;
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this.country = country;
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this.countryCode = countryCode;
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this.postalCode = postalCode;
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}
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WifiGeoAddressObject.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMGeoPositionAddress, Ci.nsIClassInfo]),
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getInterfaces: function(countRef) {
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var interfaces = [Ci.nsIDOMGeoPositionAddress, Ci.nsIClassInfo, Ci.nsISupports];
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countRef.value = interfaces.length;
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return interfaces;
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},
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getHelperForLanguage: function(language) null,
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implementationLanguage: Ci.nsIProgrammingLanguage.JAVASCRIPT,
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flags: Ci.nsIClassInfo.DOM_OBJECT,
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};
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function WifiGeoCoordsObject(lat, lon, acc, alt, altacc) {
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this.latitude = lat;
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this.longitude = lon;
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this.accuracy = acc;
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this.altitude = alt;
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this.altitudeAccuracy = altacc;
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};
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WifiGeoCoordsObject.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMGeoPositionCoords, Ci.nsIClassInfo]),
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getInterfaces: function(countRef) {
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var interfaces = [Ci.nsIDOMGeoPositionCoords, Ci.nsIClassInfo, Ci.nsISupports];
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countRef.value = interfaces.length;
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return interfaces;
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},
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getHelperForLanguage: function(language) null,
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classDescription: "wifi geo position coords object",
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implementationLanguage: Ci.nsIProgrammingLanguage.JAVASCRIPT,
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flags: Ci.nsIClassInfo.DOM_OBJECT,
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latitude: 0,
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longitude: 0,
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accuracy: 0,
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altitude: 0,
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altitudeAccuracy: 0,
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};
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function WifiGeoPositionObject(location) {
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this.coords = new WifiGeoCoordsObject(location.latitude,
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location.longitude,
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location.accuracy || 12450, // .5 * circumference of earth.
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location.altitude || 0,
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location.altitude_accuracy || 0);
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if (location.address) {
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let address = location.address;
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this.address = new WifiGeoAddressObject(address.street_number || null,
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address.street || null,
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address.premises || null,
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address.city || null,
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address.county || null,
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address.region || null,
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address.country || null,
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address.country_code || null,
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address.postal_code || null);
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}
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else
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this.address = null;
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this.timestamp = Date.now();
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};
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WifiGeoPositionObject.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMGeoPosition, Ci.nsIClassInfo]),
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// Class Info is required to be able to pass objects back into the DOM.
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getInterfaces: function(countRef) {
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var interfaces = [Ci.nsIDOMGeoPosition, Ci.nsIClassInfo, Ci.nsISupports];
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countRef.value = interfaces.length;
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return interfaces;
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},
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getHelperForLanguage: function(language) null,
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classDescription: "wifi geo location position object",
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implementationLanguage: Ci.nsIProgrammingLanguage.JAVASCRIPT,
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flags: Ci.nsIClassInfo.DOM_OBJECT,
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coords: null,
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timestamp: 0,
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};
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function HELD() {};
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// For information about the HELD format, see:
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// http://tools.ietf.org/html/draft-thomson-geopriv-held-measurements-05
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HELD.encode = function(requestObject) {
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// XML Header
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var requestString = "<locationRequest xmlns=\"urn:ietf:params:xml:ns:geopriv:held\">";
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// Measurements
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if (requestObject.wifi_towers && requestObject.wifi_towers.length > 0) {
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requestString += "<measurements xmlns=\"urn:ietf:params:xml:ns:geopriv:lm\">";
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requestString += "<wifi xmlns=\"urn:ietf:params:xml:ns:geopriv:lm:wifi\">";
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for (var i=0; i < requestObject.wifi_towers.length; ++i) {
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requestString += "<neighbourWap>";
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requestString += "<bssid>" + requestObject.wifi_towers[i].mac_address + "</bssid>";
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requestString += "<ssid>" + requestObject.wifi_towers[i].ssid + "</ssid>";
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requestString += "<rssi>" + requestObject.wifi_towers[i].signal_strength + "</rssi>";
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requestString += "</neighbourWap>";
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}
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// XML Footer
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requestString += "</wifi></measurements>";
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}
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requestString += "</locationRequest>";
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return requestString;
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};
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// Decode a HELD response into a Gears-style object
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HELD.decode = function(responseXML) {
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// Find a Circle object in PIDF-LO and decode
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function nsResolver(prefix) {
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var ns = {
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'held': 'urn:ietf:params:xml:ns:geopriv:held',
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'pres': 'urn:ietf:params:xml:ns:pidf',
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'gp': 'urn:ietf:params:xml:ns:pidf:geopriv10',
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'gml': 'http://www.opengis.net/gml',
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'gs': 'http://www.opengis.net/pidflo/1.0',
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};
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return ns[prefix] || null;
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}
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var xpathEval = Components.classes["@mozilla.org/dom/xpath-evaluator;1"].createInstance(Ci.nsIDOMXPathEvaluator);
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// Grab values out of XML via XPath
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var pos = xpathEval.evaluate(
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'/held:locationResponse/pres:presence/pres:tuple/pres:status/gp:geopriv/gp:location-info/gs:Circle/gml:pos',
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responseXML,
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nsResolver,
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Ci.nsIDOMXPathResult.STRING_TYPE,
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null);
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var rad = xpathEval.evaluate(
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'/held:locationResponse/pres:presence/pres:tuple/pres:status/gp:geopriv/gp:location-info/gs:Circle/gs:radius',
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responseXML,
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nsResolver,
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Ci.nsIDOMXPathResult.NUMBER_TYPE,
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null );
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var uom = xpathEval.evaluate(
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'/held:locationResponse/pres:presence/pres:tuple/pres:status/gp:geopriv/gp:location-info/gs:Circle/gs:radius/@uom',
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responseXML,
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nsResolver,
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Ci.nsIDOMXPathResult.STRING_TYPE,
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null);
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// Bail if we don't have a valid result (all values && uom==meters)
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if ((pos.stringValue == null) ||
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(rad.numberValue == null) ||
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(uom.stringValue == null) ||
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(uom.stringValue != "urn:ogc:def:uom:EPSG::9001")) {
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return null;
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}
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// Split the pos value into lat/long
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var coords = pos.stringValue.split(/[ \t\n]+/);
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// Fill out the object to return:
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var obj = {
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location: {
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latitude: parseFloat(coords[0]),
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longitude: parseFloat(coords[1]),
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accuracy: rad.numberValue
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}
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};
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return obj;
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}
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function WifiGeoPositionProvider() {
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this.prefService = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch).QueryInterface(Ci.nsIPrefService);
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try {
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gLoggingEnabled = this.prefService.getBoolPref("geo.wifi.logging.enabled");
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} catch (e) {}
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try {
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gTestingEnabled = this.prefService.getBoolPref("geo.wifi.testing");
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} catch (e) {}
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};
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WifiGeoPositionProvider.prototype = {
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classID: Components.ID("{77DA64D3-7458-4920-9491-86CC9914F904}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIGeolocationProvider,
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Ci.nsIWifiListener,
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Ci.nsITimerCallback]),
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prefService: null,
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wifi_service: null,
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timer: null,
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hasSeenWiFi: false,
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started: false,
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startup: function() {
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if (this.started == true)
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return;
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this.started = true;
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LOG("startup called. testing mode is" + gTestingEnabled);
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// if we don't see anything in 5 seconds, kick of one IP geo lookup.
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// if we are testing, just hammer this callback so that we are more or less
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// always sending data. It doesn't matter if we have an access point or not.
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this.hasSeenWiFi = false;
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this.timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
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if (gTestingEnabled == false)
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this.timer.initWithCallback(this, 5000, this.timer.TYPE_ONE_SHOT);
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else
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this.timer.initWithCallback(this, 200, this.timer.TYPE_REPEATING_SLACK);
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},
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watch: function(c) {
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LOG("watch called");
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if (!this.wifi_service) {
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this.wifi_service = Cc["@mozilla.org/wifi/monitor;1"].getService(Components.interfaces.nsIWifiMonitor);
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this.wifi_service.startWatching(this);
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}
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},
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shutdown: function() {
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LOG("shutdown called");
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if(this.wifi_service)
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this.wifi_service.stopWatching(this);
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this.wifi_service = null;
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if (this.timer != null) {
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this.timer.cancel();
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this.timer = null;
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}
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// Although we aren't using cookies, we should err on the side of not
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// saving any access tokens if the user asked us not to save cookies or
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// has changed the lifetimePolicy. The access token in these cases is
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// used and valid for the life of this object (eg. between startup and
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// shutdown).e
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let prefBranch = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
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if (prefBranch.getIntPref("network.cookie.lifetimePolicy") != 0)
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prefBranch.deleteBranch("geo.wifi.access_token.");
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this.started = false;
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},
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getAccessTokenForURL: function(url)
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{
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// check to see if we have an access token:
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var accessToken = "";
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try {
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var accessTokenPrefName = "geo.wifi.access_token." + url;
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accessToken = this.prefService.getCharPref(accessTokenPrefName);
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// check to see if it has expired
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var accessTokenDate = this.prefService.getIntPref(accessTokenPrefName + ".time");
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var accessTokenInterval = 1209600; /* seconds in 2 weeks */
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try {
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accessTokenInterval = this.prefService.getIntPref("geo.wifi.access_token.recycle_interval");
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} catch (e) {}
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if (nowInSeconds() - accessTokenDate > accessTokenInterval)
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accessToken = "";
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}
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catch (e) {
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accessToken = "";
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}
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return accessToken;
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},
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onChange: function(accessPoints) {
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LOG("onChange called");
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this.hasSeenWiFi = true;
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// send our request to a wifi geolocation network provider:
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var xhr = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"]
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.createInstance(Ci.nsIXMLHttpRequest);
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// This is a background load
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xhr.mozBackgroundRequest = true;
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var provider_url = this.prefService.getCharPref("geo.wifi.uri");
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var provider_protocol = 0;
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try {
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provider_protocol = this.prefService.getIntPref("geo.wifi.protocol");
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} catch (e) {}
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LOG("provider url = " + provider_url);
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xhr.open("POST", provider_url, false);
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// set something so that we can strip cookies
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xhr.channel.loadFlags = Ci.nsIChannel.LOAD_ANONYMOUS;
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xhr.onerror = function(req) {
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LOG("onerror: " + req);
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};
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xhr.onload = function (req) {
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LOG("xhr onload...");
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try {
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// if we get a bad response, we will throw and never report a location
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var response;
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switch (provider_protocol) {
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case 1:
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LOG("service returned: " + req.target.responseXML);
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response = HELD.decode(req.target.responseXML);
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break;
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case 0:
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default:
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LOG("service returned: " + req.target.responseText);
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response = JSON.parse(req.target.responseText);
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}
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} catch (e) {
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LOG("Parse failed");
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return;
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}
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// response looks something like:
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// {"location":{"latitude":51.5090332,"longitude":-0.1212726,"accuracy":150.0},"access_token":"2:jVhRZJ-j6PiRchH_:RGMrR0W1BiwdZs12"}
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// Check to see if we have a new access token
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var newAccessToken = response.access_token;
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if (newAccessToken != undefined)
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{
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var prefService = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
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var accessToken = "";
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var accessTokenPrefName = "geo.wifi.access_token." + req.target.channel.URI.spec;
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try { accessToken = prefService.getCharPref(accessTokenPrefName); } catch (e) {}
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if (accessToken != newAccessToken) {
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// no match, lets cache
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LOG("New Access Token: " + newAccessToken + "\n" + accessTokenPrefName);
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try {
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prefService.setIntPref(accessTokenPrefName + ".time", nowInSeconds());
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prefService.setCharPref(accessTokenPrefName, newAccessToken);
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} catch (x) {
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// XXX temporary hack for bug 575346 to allow geolocation to function
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}
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}
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}
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if (response.location) {
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var newLocation = new WifiGeoPositionObject(response.location);
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var update = Cc["@mozilla.org/geolocation/service;1"].getService(Ci.nsIGeolocationUpdate);
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update.update(newLocation);
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}
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};
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var accessToken = this.getAccessTokenForURL(provider_url);
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var request = {
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version: "1.1.0",
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request_address: true,
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};
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if (accessToken != "")
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request.access_token = accessToken;
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if (accessPoints != null) {
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function filterBlankSSIDs(ap) ap.ssid != ""
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function deconstruct(ap) ({
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mac_address: ap.mac,
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ssid: ap.ssid,
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signal_strength: ap.signal
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})
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request.wifi_towers = accessPoints.filter(filterBlankSSIDs).map(deconstruct);
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}
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var requestString;
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switch (provider_protocol) {
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case 1:
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requestString = HELD.encode(request);
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break;
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case 0:
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default:
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requestString = JSON.stringify(request);
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}
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LOG("client sending: " + requestString);
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try {
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xhr.send(requestString);
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} catch (e) {}
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},
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onError: function (code) {
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LOG("wifi error: " + code);
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},
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notify: function (timer) {
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if (!gTestingEnabled) {
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if (this.hasSeenWiFi == false)
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this.onChange(null);
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this.timer = null;
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return;
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}
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// if we are testing, we need to hammer this.
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this.onChange(null);
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},
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};
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var NSGetFactory = XPCOMUtils.generateNSGetFactory([WifiGeoPositionProvider]);
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