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/* -*- js-indent-level: 2; indent-tabs-mode: nil -*- */
/* 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";
this.EXPORTED_SYMBOLS = ["BrowserUsageTelemetry"];
const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
"resource://gre/modules/PrivateBrowsingUtils.jsm");
// The upper bound for the count of the visited unique domain names.
const MAX_UNIQUE_VISITED_DOMAINS = 100;
// Observed topic names.
const WINDOWS_RESTORED_TOPIC = "sessionstore-windows-restored";
const TAB_RESTORING_TOPIC = "SSTabRestoring";
const TELEMETRY_SUBSESSIONSPLIT_TOPIC = "internal-telemetry-after-subsession-split";
const DOMWINDOW_OPENED_TOPIC = "domwindowopened";
// Probe names.
const MAX_TAB_COUNT_SCALAR_NAME = "browser.engagement.max_concurrent_tab_count";
const MAX_WINDOW_COUNT_SCALAR_NAME = "browser.engagement.max_concurrent_window_count";
const TAB_OPEN_EVENT_COUNT_SCALAR_NAME = "browser.engagement.tab_open_event_count";
const WINDOW_OPEN_EVENT_COUNT_SCALAR_NAME = "browser.engagement.window_open_event_count";
const UNIQUE_DOMAINS_COUNT_SCALAR_NAME = "browser.engagement.unique_domains_count";
const TOTAL_URI_COUNT_SCALAR_NAME = "browser.engagement.total_uri_count";
const UNFILTERED_URI_COUNT_SCALAR_NAME = "browser.engagement.unfiltered_uri_count";
// A list of known search origins.
const KNOWN_SEARCH_SOURCES = [
"abouthome",
"contextmenu",
"newtab",
"searchbar",
"urlbar",
];
const KNOWN_ONEOFF_SOURCES = [
"oneoff-urlbar",
"oneoff-searchbar",
"unknown", // Edge case: this is the searchbar (see bug 1195733 comment 7).
];
function getOpenTabsAndWinsCounts() {
let tabCount = 0;
let winCount = 0;
let browserEnum = Services.wm.getEnumerator("navigator:browser");
while (browserEnum.hasMoreElements()) {
let win = browserEnum.getNext();
winCount++;
tabCount += win.gBrowser.tabs.length;
}
return { tabCount, winCount };
}
function getSearchEngineId(engine) {
if (engine) {
if (engine.identifier) {
return engine.identifier;
}
// Due to bug 1222070, we can't directly check Services.telemetry.canRecordExtended
// here.
const extendedTelemetry = Services.prefs.getBoolPref("toolkit.telemetry.enabled");
if (engine.name && extendedTelemetry) {
// If it's a custom search engine only report the engine name
// if extended Telemetry is enabled.
return "other-" + engine.name;
}
}
return "other";
}
let URICountListener = {
// A set containing the visited domains, see bug 1271310.
_domainSet: new Set(),
// A map to keep track of the URIs loaded from the restored tabs.
_restoredURIsMap: new WeakMap(),
isHttpURI(uri) {
// Only consider http(s) schemas.
return uri.schemeIs("http") || uri.schemeIs("https");
},
addRestoredURI(browser, uri) {
if (!this.isHttpURI(uri)) {
return;
}
this._restoredURIsMap.set(browser, uri.spec);
},
onLocationChange(browser, webProgress, request, uri, flags) {
// Don't count this URI if it's an error page.
if (flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_ERROR_PAGE) {
return;
}
// We only care about top level loads.
if (!webProgress.isTopLevel) {
return;
}
// The SessionStore sets the URI of a tab first, firing onLocationChange the
// first time, then manages content loading using its scheduler. Once content
// loads, we will hit onLocationChange again.
// We can catch the first case by checking for null requests: be advised that
// this can also happen when navigating page fragments, so account for it.
if (!request &&
!(flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT)) {
return;
}
// Track URI loads, even if they're not http(s).
let uriSpec = null;
try {
uriSpec = uri.spec;
} catch (e) {
// If we have troubles parsing the spec, still count this as
// an unfiltered URI.
Services.telemetry.scalarAdd(UNFILTERED_URI_COUNT_SCALAR_NAME, 1);
return;
}
// Don't count about:blank and similar pages, as they would artificially
// inflate the counts.
if (browser.ownerDocument.defaultView.gInitialPages.includes(uriSpec)) {
return;
}
// If the URI we're loading is in the _restoredURIsMap, then it comes from a
// restored tab. If so, let's skip it and remove it from the map as we want to
// count page refreshes.
if (this._restoredURIsMap.get(browser) === uriSpec) {
this._restoredURIsMap.delete(browser);
return;
}
// The URI wasn't from a restored tab. Count it among the unfiltered URIs.
// If this is an http(s) URI, this also gets counted by the "total_uri_count"
// probe.
Services.telemetry.scalarAdd(UNFILTERED_URI_COUNT_SCALAR_NAME, 1);
if (!this.isHttpURI(uri)) {
return;
}
// Update the URI counts.
Services.telemetry.scalarAdd(TOTAL_URI_COUNT_SCALAR_NAME, 1);
// We only want to count the unique domains up to MAX_UNIQUE_VISITED_DOMAINS.
if (this._domainSet.size == MAX_UNIQUE_VISITED_DOMAINS) {
return;
}
// Unique domains should be aggregated by (eTLD + 1): x.test.com and y.test.com
// are counted once as test.com.
try {
// Even if only considering http(s) URIs, |getBaseDomain| could still throw
// due to the URI containing invalid characters or the domain actually being
// an ipv4 or ipv6 address.
this._domainSet.add(Services.eTLD.getBaseDomain(uri));
} catch (e) {
return;
}
Services.telemetry.scalarSet(UNIQUE_DOMAINS_COUNT_SCALAR_NAME, this._domainSet.size);
},
/**
* Reset the counts. This should be called when breaking a session in Telemetry.
*/
reset() {
this._domainSet.clear();
},
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebProgressListener,
Ci.nsISupportsWeakReference]),
};
let BrowserUsageTelemetry = {
init() {
Services.obs.addObserver(this, WINDOWS_RESTORED_TOPIC, false);
},
/**
* Handle subsession splits in the parent process.
*/
afterSubsessionSplit() {
// Scalars just got cleared due to a subsession split. We need to set the maximum
// concurrent tab and window counts so that they reflect the correct value for the
// new subsession.
const counts = getOpenTabsAndWinsCounts();
Services.telemetry.scalarSetMaximum(MAX_TAB_COUNT_SCALAR_NAME, counts.tabCount);
Services.telemetry.scalarSetMaximum(MAX_WINDOW_COUNT_SCALAR_NAME, counts.winCount);
// Reset the URI counter.
URICountListener.reset();
},
uninit() {
Services.obs.removeObserver(this, DOMWINDOW_OPENED_TOPIC, false);
Services.obs.removeObserver(this, TELEMETRY_SUBSESSIONSPLIT_TOPIC, false);
Services.obs.removeObserver(this, WINDOWS_RESTORED_TOPIC, false);
},
observe(subject, topic, data) {
switch (topic) {
case WINDOWS_RESTORED_TOPIC:
this._setupAfterRestore();
break;
case DOMWINDOW_OPENED_TOPIC:
this._onWindowOpen(subject);
break;
case TELEMETRY_SUBSESSIONSPLIT_TOPIC:
this.afterSubsessionSplit();
break;
}
},
handleEvent(event) {
switch (event.type) {
case "TabOpen":
this._onTabOpen();
break;
case "unload":
this._unregisterWindow(event.target);
break;
case TAB_RESTORING_TOPIC:
// We're restoring a new tab from a previous or crashed session.
// We don't want to track the URIs from these tabs, so let
// |URICountListener| know about them.
let browser = event.target.linkedBrowser;
URICountListener.addRestoredURI(browser, browser.currentURI);
break;
}
},
/**
* The main entry point for recording search related Telemetry. This includes
* search counts and engagement measurements.
*
* Telemetry records only search counts per engine and action origin, but
* nothing pertaining to the search contents themselves.
*
* @param {nsISearchEngine} engine
* The engine handling the search.
* @param {String} source
* Where the search originated from. See KNOWN_SEARCH_SOURCES for allowed
* values.
* @param {Object} [details] Options object.
* @param {Boolean} [details.isOneOff=false]
* true if this event was generated by a one-off search.
* @param {Boolean} [details.isSuggestion=false]
* true if this event was generated by a suggested search.
* @param {Boolean} [details.isAlias=false]
* true if this event was generated by a search using an alias.
* @param {Object} [details.type=null]
* The object describing the event that triggered the search.
* @throws if source is not in the known sources list.
*/
recordSearch(engine, source, details={}) {
const isOneOff = !!details.isOneOff;
const countId = getSearchEngineId(engine) + "." + source;
if (isOneOff) {
if (!KNOWN_ONEOFF_SOURCES.includes(source)) {
// Silently drop the error if this bogus call
// came from 'urlbar' or 'searchbar'. They're
// calling |recordSearch| twice from two different
// code paths because they want to record the search
// in SEARCH_COUNTS.
if (['urlbar', 'searchbar'].includes(source)) {
Services.telemetry.getKeyedHistogramById("SEARCH_COUNTS").add(countId);
return;
}
throw new Error("Unknown source for one-off search: " + source);
}
} else {
if (!KNOWN_SEARCH_SOURCES.includes(source)) {
throw new Error("Unknown source for search: " + source);
}
Services.telemetry.getKeyedHistogramById("SEARCH_COUNTS").add(countId);
}
// Dispatch the search signal to other handlers.
this._handleSearchAction(engine, source, details);
},
_recordSearch(engine, source, action = null) {
let scalarKey = action ? "search_" + action : "search";
Services.telemetry.keyedScalarAdd("browser.engagement.navigation." + source,
scalarKey, 1);
Services.telemetry.recordEvent("navigation", "search", source, action,
{ engine: getSearchEngineId(engine) });
},
_handleSearchAction(engine, source, details) {
switch (source) {
case "urlbar":
case "oneoff-urlbar":
case "searchbar":
case "oneoff-searchbar":
case "unknown": // Edge case: this is the searchbar (see bug 1195733 comment 7).
this._handleSearchAndUrlbar(engine, source, details);
break;
case "abouthome":
this._recordSearch(engine, "about_home", "enter");
break;
case "newtab":
this._recordSearch(engine, "about_newtab", "enter");
break;
case "contextmenu":
this._recordSearch(engine, "contextmenu");
break;
}
},
/**
* This function handles the "urlbar", "urlbar-oneoff", "searchbar" and
* "searchbar-oneoff" sources.
*/
_handleSearchAndUrlbar(engine, source, details) {
// We want "urlbar" and "urlbar-oneoff" (and similar cases) to go in the same
// scalar, but in a different key.
// When using one-offs in the searchbar we get an "unknown" source. See bug
// 1195733 comment 7 for the context. Fix-up the label here.
const sourceName =
(source === "unknown") ? "searchbar" : source.replace("oneoff-", "");
const isOneOff = !!details.isOneOff;
if (isOneOff) {
// We will receive a signal from the "urlbar"/"searchbar" even when the
// search came from "oneoff-urlbar". That's because both signals
// are propagated from search.xml. Skip it if that's the case.
// Moreover, we skip the "unknown" source that comes from the searchbar
// when performing searches from the default search engine. See bug 1195733
// comment 7 for context.
if (["urlbar", "searchbar", "unknown"].includes(source)) {
return;
}
// If that's a legit one-off search signal, record it using the relative key.
this._recordSearch(engine, sourceName, "oneoff");
return;
}
// The search was not a one-off. It was a search with the default search engine.
if (details.isSuggestion) {
// It came from a suggested search, so count it as such.
this._recordSearch(engine, sourceName, "suggestion");
return;
} else if (details.isAlias) {
// This one came from a search that used an alias.
this._recordSearch(engine, sourceName, "alias");
return;
}
// The search signal was generated by typing something and pressing enter.
this._recordSearch(engine, sourceName, "enter");
},
/**
* This gets called shortly after the SessionStore has finished restoring
* windows and tabs. It counts the open tabs and adds listeners to all the
* windows.
*/
_setupAfterRestore() {
// Make sure to catch new chrome windows and subsession splits.
Services.obs.addObserver(this, DOMWINDOW_OPENED_TOPIC, false);
Services.obs.addObserver(this, TELEMETRY_SUBSESSIONSPLIT_TOPIC, false);
// Attach the tabopen handlers to the existing Windows.
let browserEnum = Services.wm.getEnumerator("navigator:browser");
while (browserEnum.hasMoreElements()) {
this._registerWindow(browserEnum.getNext());
}
// Get the initial tab and windows max counts.
const counts = getOpenTabsAndWinsCounts();
Services.telemetry.scalarSetMaximum(MAX_TAB_COUNT_SCALAR_NAME, counts.tabCount);
Services.telemetry.scalarSetMaximum(MAX_WINDOW_COUNT_SCALAR_NAME, counts.winCount);
},
/**
* Adds listeners to a single chrome window.
*/
_registerWindow(win) {
win.addEventListener("unload", this);
win.addEventListener("TabOpen", this, true);
// Don't include URI and domain counts when in private mode.
if (PrivateBrowsingUtils.isWindowPrivate(win)) {
return;
}
win.gBrowser.tabContainer.addEventListener(TAB_RESTORING_TOPIC, this);
win.gBrowser.addTabsProgressListener(URICountListener);
},
/**
* Removes listeners from a single chrome window.
*/
_unregisterWindow(win) {
win.removeEventListener("unload", this);
win.removeEventListener("TabOpen", this, true);
// Don't include URI and domain counts when in private mode.
if (PrivateBrowsingUtils.isWindowPrivate(win.defaultView)) {
return;
}
win.defaultView.gBrowser.tabContainer.removeEventListener(TAB_RESTORING_TOPIC, this);
win.defaultView.gBrowser.removeTabsProgressListener(URICountListener);
},
/**
* Updates the tab counts.
* @param {Number} [newTabCount=0] The count of the opened tabs across all windows. This
* is computed manually if not provided.
*/
_onTabOpen(tabCount = 0) {
// Use the provided tab count if available. Otherwise, go on and compute it.
tabCount = tabCount || getOpenTabsAndWinsCounts().tabCount;
// Update the "tab opened" count and its maximum.
Services.telemetry.scalarAdd(TAB_OPEN_EVENT_COUNT_SCALAR_NAME, 1);
Services.telemetry.scalarSetMaximum(MAX_TAB_COUNT_SCALAR_NAME, tabCount);
},
/**
* Tracks the window count and registers the listeners for the tab count.
* @param{Object} win The window object.
*/
_onWindowOpen(win) {
// Make sure to have a |nsIDOMWindow|.
if (!(win instanceof Ci.nsIDOMWindow)) {
return;
}
let onLoad = () => {
win.removeEventListener("load", onLoad, false);
// Ignore non browser windows.
if (win.document.documentElement.getAttribute("windowtype") != "navigator:browser") {
return;
}
this._registerWindow(win);
// Track the window open event and check the maximum.
const counts = getOpenTabsAndWinsCounts();
Services.telemetry.scalarAdd(WINDOW_OPEN_EVENT_COUNT_SCALAR_NAME, 1);
Services.telemetry.scalarSetMaximum(MAX_WINDOW_COUNT_SCALAR_NAME, counts.winCount);
// We won't receive the "TabOpen" event for the first tab within a new window.
// Account for that.
this._onTabOpen(counts.tabCount);
};
win.addEventListener("load", onLoad, false);
},
};