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/* 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/. */
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
});
ChromeUtils.defineLazyGetter(lazy, "gCryptoHash", () => {
return Cc["@mozilla.org/security/hash;1"].createInstance(Ci.nsICryptoHash);
});
// The various histograms and scalars that we report to.
const SEARCH_CONTENT_SCALAR_BASE = "browser.search.content.";
const SEARCH_WITH_ADS_SCALAR_BASE = "browser.search.withads.";
const SEARCH_AD_CLICKS_SCALAR_BASE = "browser.search.adclicks.";
const SEARCH_DATA_TRANSFERRED_SCALAR = "browser.search.data_transferred";
const SEARCH_TELEMETRY_PRIVATE_BROWSING_KEY_SUFFIX = "pb";
// Exported for tests.
export const ADLINK_CHECK_TIMEOUT_MS = 1000;
// Unlike the standard adlink check, the timeout for single page apps is not
// based on a content event within the page, like DOMContentLoaded or load.
// Thus, we aim for a longer timeout to account for when the server might be
// slow to update the content on the page.
export const SPA_ADLINK_CHECK_TIMEOUT_MS = 2500;
export const TELEMETRY_SETTINGS_KEY = "search-telemetry-v2";
export const TELEMETRY_CATEGORIZATION_KEY = "search-categorization";
export const TELEMETRY_CATEGORIZATION_DOWNLOAD_SETTINGS = {
// Units are in milliseconds.
base: 3600000,
minAdjust: 60000,
maxAdjust: 600000,
maxTriesPerSession: 2,
};
export const SEARCH_TELEMETRY_SHARED = {
PROVIDER_INFO: "SearchTelemetry:ProviderInfo",
LOAD_TIMEOUT: "SearchTelemetry:LoadTimeout",
SPA_LOAD_TIMEOUT: "SearchTelemetry:SPALoadTimeout",
};
const impressionIdsWithoutEngagementsSet = new Set();
export const CATEGORIZATION_SETTINGS = {
MAX_DOMAINS_TO_CATEGORIZE: 10,
MINIMUM_SCORE: 0,
STARTING_RANK: 2,
IDLE_TIMEOUT_SECONDS: 60 * 60,
WAKE_TIMEOUT_MS: 60 * 60 * 1000,
};
ChromeUtils.defineLazyGetter(lazy, "logConsole", () => {
return console.createInstance({
prefix: "SearchTelemetry",
maxLogLevel: lazy.SearchUtils.loggingEnabled ? "Debug" : "Warn",
});
});
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"serpEventsEnabled",
"browser.search.serpEventTelemetry.enabled",
true
);
const CATEGORIZATION_PREF =
"browser.search.serpEventTelemetryCategorization.enabled";
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"serpEventTelemetryCategorization",
CATEGORIZATION_PREF,
false,
(aPreference, previousValue, newValue) => {
if (newValue) {
SearchSERPDomainToCategoriesMap.init();
SearchSERPCategorizationEventScheduler.init();
} else {
SearchSERPDomainToCategoriesMap.uninit();
SearchSERPCategorizationEventScheduler.uninit();
}
}
);
export const SearchSERPTelemetryUtils = {
ACTIONS: {
CLICKED: "clicked",
EXPANDED: "expanded",
SUBMITTED: "submitted",
},
COMPONENTS: {
AD_CAROUSEL: "ad_carousel",
AD_IMAGE_ROW: "ad_image_row",
AD_LINK: "ad_link",
AD_SIDEBAR: "ad_sidebar",
AD_SITELINK: "ad_sitelink",
INCONTENT_SEARCHBOX: "incontent_searchbox",
NON_ADS_LINK: "non_ads_link",
REFINED_SEARCH_BUTTONS: "refined_search_buttons",
SHOPPING_TAB: "shopping_tab",
},
ABANDONMENTS: {
NAVIGATION: "navigation",
TAB_CLOSE: "tab_close",
WINDOW_CLOSE: "window_close",
},
INCONTENT_SOURCES: {
OPENED_IN_NEW_TAB: "opened_in_new_tab",
REFINE_ON_SERP: "follow_on_from_refine_on_SERP",
SEARCHBOX: "follow_on_from_refine_on_incontent_search",
},
CATEGORIZATION: {
INCONCLUSIVE: 0,
},
};
const AD_COMPONENTS = [
SearchSERPTelemetryUtils.COMPONENTS.AD_CAROUSEL,
SearchSERPTelemetryUtils.COMPONENTS.AD_IMAGE_ROW,
SearchSERPTelemetryUtils.COMPONENTS.AD_LINK,
SearchSERPTelemetryUtils.COMPONENTS.AD_SIDEBAR,
SearchSERPTelemetryUtils.COMPONENTS.AD_SITELINK,
];
/**
* TelemetryHandler is the main class handling Search Engine Result Page (SERP)
* telemetry. It primarily deals with tracking of what pages are loaded into tabs.
*
* It handles the *in-content:sap* keys of the SEARCH_COUNTS histogram.
*/
class TelemetryHandler {
// Whether or not this class is initialised.
_initialized = false;
// An instance of ContentHandler.
_contentHandler;
// The original provider information, mainly used for tests.
_originalProviderInfo = null;
// The current search provider info.
_searchProviderInfo = null;
// An instance of remote settings that is used to access the provider info.
_telemetrySettings;
// Callback used when syncing telemetry settings.
#telemetrySettingsSync;
// _browserInfoByURL is a map of tracked search urls to objects containing:
// * {object} info
// the search provider information associated with the url.
// * {WeakMap} browserTelemetryStateMap
// a weak map of browsers that have the url loaded, their ad report state,
// and their impression id.
// * {integer} count
// a manual count of browsers logged.
// We keep a weak map of browsers, in case we miss something on our counts
// and cause a memory leak - worst case our map is slightly bigger than it
// needs to be.
// The manual count is because WeakMap doesn't give us size/length
// information, but we want to know when we can clean up our associated
// entry.
_browserInfoByURL = new Map();
// Browser objects mapped to the info in _browserInfoByURL.
#browserToItemMap = new WeakMap();
// _browserSourceMap is a map of the latest search source for a particular
// browser - one of the KNOWN_SEARCH_SOURCES in BrowserSearchTelemetry.
_browserSourceMap = new WeakMap();
/**
* A WeakMap whose key is a browser with value of a source type found in
* INCONTENT_SOURCES. Kept separate to avoid overlapping with legacy
* search sources. These sources are specific to the content of a search
* provider page rather than something from within the browser itself.
*/
#browserContentSourceMap = new WeakMap();
/**
* Sets the source of a SERP visit from something that occured in content
* rather than from the browser.
*
* @param {browser} browser
* The browser object associated with the page that should be a SERP.
* @param {string} source
* The source that started the load. One of
* SearchSERPTelemetryUtils.COMPONENTS.INCONTENT_SEARCHBOX,
* SearchSERPTelemetryUtils.INCONTENT_SOURCES.OPENED_IN_NEW_TAB or
* SearchSERPTelemetryUtils.INCONTENT_SOURCES.REFINE_ON_SERP.
*/
setBrowserContentSource(browser, source) {
this.#browserContentSourceMap.set(browser, source);
}
// _browserNewtabSessionMap is a map of the newtab session id for particular
// browsers.
_browserNewtabSessionMap = new WeakMap();
constructor() {
this._contentHandler = new ContentHandler({
browserInfoByURL: this._browserInfoByURL,
findBrowserItemForURL: (...args) => this._findBrowserItemForURL(...args),
checkURLForSerpMatch: (...args) => this._checkURLForSerpMatch(...args),
findItemForBrowser: (...args) => this.findItemForBrowser(...args),
});
}
/**
* Initializes the TelemetryHandler and its ContentHandler. It will add
* appropriate listeners to the window so that window opening and closing
* can be tracked.
*/
async init() {
if (this._initialized) {
return;
}
this._telemetrySettings = lazy.RemoteSettings(TELEMETRY_SETTINGS_KEY);
let rawProviderInfo = [];
try {
rawProviderInfo = await this._telemetrySettings.get();
} catch (ex) {
lazy.logConsole.error("Could not get settings:", ex);
}
this.#telemetrySettingsSync = event => this.#onSettingsSync(event);
this._telemetrySettings.on("sync", this.#telemetrySettingsSync);
// Send the provider info to the child handler.
this._contentHandler.init(rawProviderInfo);
this._originalProviderInfo = rawProviderInfo;
// Now convert the regexps into
this._setSearchProviderInfo(rawProviderInfo);
for (let win of Services.wm.getEnumerator("navigator:browser")) {
this._registerWindow(win);
}
Services.wm.addListener(this);
this._initialized = true;
}
async #onSettingsSync(event) {
let current = event.data?.current;
if (current) {
lazy.logConsole.debug(
"Update provider info due to Remote Settings sync."
);
this._originalProviderInfo = current;
this._setSearchProviderInfo(current);
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.PROVIDER_INFO,
current
);
Services.ppmm.sharedData.flush();
} else {
lazy.logConsole.debug(
"Ignoring Remote Settings sync data due to missing records."
);
}
Services.obs.notifyObservers(null, "search-telemetry-v2-synced");
}
/**
* Uninitializes the TelemetryHandler and its ContentHandler.
*/
uninit() {
if (!this._initialized) {
return;
}
this._contentHandler.uninit();
for (let win of Services.wm.getEnumerator("navigator:browser")) {
this._unregisterWindow(win);
}
Services.wm.removeListener(this);
try {
this._telemetrySettings.off("sync", this.#telemetrySettingsSync);
} catch (ex) {
lazy.logConsole.error(
"Failed to shutdown SearchSERPTelemetry Remote Settings.",
ex
);
}
this._telemetrySettings = null;
this.#telemetrySettingsSync = null;
this._initialized = false;
}
/**
* Records the search source for particular browsers, in case it needs
* to be associated with a SERP.
*
* @param {browser} browser
* The browser where the search originated.
* @param {string} source
* Where the search originated from.
*/
recordBrowserSource(browser, source) {
this._browserSourceMap.set(browser, source);
}
/**
* Records the newtab source for particular browsers, in case it needs
* to be associated with a SERP.
*
* @param {browser} browser
* The browser where the search originated.
* @param {string} newtabSessionId
* The sessionId of the newtab session the search originated from.
*/
recordBrowserNewtabSession(browser, newtabSessionId) {
this._browserNewtabSessionMap.set(browser, newtabSessionId);
}
/**
* Helper function for recording the reason for a Glean abandonment event.
*
* @param {string} impressionId
* The impression id for the abandonment event about to be recorded.
* @param {string} reason
* The reason the SERP is deemed abandoned.
* One of SearchSERPTelemetryUtils.ABANDONMENTS.
*/
recordAbandonmentTelemetry(impressionId, reason) {
impressionIdsWithoutEngagementsSet.delete(impressionId);
lazy.logConsole.debug(
`Recording an abandonment event for impression id ${impressionId} with reason: ${reason}`
);
Glean.serp.abandonment.record({
impression_id: impressionId,
reason,
});
}
/**
* Handles the TabClose event received from the listeners.
*
* @param {object} event
* The event object provided by the listener.
*/
handleEvent(event) {
if (event.type != "TabClose") {
console.error("Received unexpected event type", event.type);
return;
}
this._browserNewtabSessionMap.delete(event.target.linkedBrowser);
this.stopTrackingBrowser(
event.target.linkedBrowser,
SearchSERPTelemetryUtils.ABANDONMENTS.TAB_CLOSE
);
}
/**
* Test-only function, used to override the provider information, so that
* unit tests can set it to easy to test values.
*
* @param {Array} providerInfo
* for type information.
*/
overrideSearchTelemetryForTests(providerInfo) {
let info = providerInfo ? providerInfo : this._originalProviderInfo;
this._contentHandler.overrideSearchTelemetryForTests(info);
this._setSearchProviderInfo(info);
}
/**
* Used to set the local version of the search provider information.
* This automatically maps the regexps to RegExp objects so that
* we don't have to create a new instance each time.
*
* @param {Array} providerInfo
* A raw array of provider information to set.
*/
_setSearchProviderInfo(providerInfo) {
this._searchProviderInfo = providerInfo.map(provider => {
let newProvider = {
...provider,
searchPageRegexp: new RegExp(provider.searchPageRegexp),
};
if (provider.extraAdServersRegexps) {
newProvider.extraAdServersRegexps = provider.extraAdServersRegexps.map(
r => new RegExp(r)
);
}
newProvider.nonAdsLinkRegexps = provider.nonAdsLinkRegexps?.length
? provider.nonAdsLinkRegexps.map(r => new RegExp(r))
: [];
if (provider.shoppingTab?.regexp) {
newProvider.shoppingTab = {
selector: provider.shoppingTab.selector,
regexp: new RegExp(provider.shoppingTab.regexp),
};
}
return newProvider;
});
this._contentHandler._searchProviderInfo = this._searchProviderInfo;
}
reportPageAction(info, browser) {
this._contentHandler._reportPageAction(info, browser);
}
reportPageWithAds(info, browser) {
this._contentHandler._reportPageWithAds(info, browser);
}
reportPageWithAdImpressions(info, browser) {
this._contentHandler._reportPageWithAdImpressions(info, browser);
}
async reportPageDomains(info, browser) {
await this._contentHandler._reportPageDomains(info, browser);
}
reportPageImpression(info, browser) {
this._contentHandler._reportPageImpression(info, browser);
}
/**
* This may start tracking a tab based on the URL. If the URL matches a search
* partner, and it has a code, then we'll start tracking it. This will aid
* determining if it is a page we should be tracking for adverts.
*
* @param {object} browser
* The browser associated with the page.
* @param {string} url
* The url that was loaded in the browser.
* @param {nsIDocShell.LoadCommand} loadType
* The load type associated with the page load.
*/
updateTrackingStatus(browser, url, loadType) {
if (
!lazy.BrowserSearchTelemetry.shouldRecordSearchCount(
browser.getTabBrowser()
)
) {
return;
}
let info = this._checkURLForSerpMatch(url);
if (!info) {
this._browserNewtabSessionMap.delete(browser);
this.stopTrackingBrowser(browser);
return;
}
let source = "unknown";
if (loadType & Ci.nsIDocShell.LOAD_CMD_RELOAD) {
source = "reload";
} else if (loadType & Ci.nsIDocShell.LOAD_CMD_HISTORY) {
source = "tabhistory";
} else if (this._browserSourceMap.has(browser)) {
source = this._browserSourceMap.get(browser);
this._browserSourceMap.delete(browser);
}
// If it's a SERP but doesn't have a browser source, the source might be
// from something that happened in content. We keep this separate from
// source because legacy telemetry should not change its reporting.
let inContentSource;
if (
lazy.serpEventsEnabled &&
info.hasComponents &&
this.#browserContentSourceMap.has(browser)
) {
inContentSource = this.#browserContentSourceMap.get(browser);
this.#browserContentSourceMap.delete(browser);
}
let newtabSessionId;
if (this._browserNewtabSessionMap.has(browser)) {
newtabSessionId = this._browserNewtabSessionMap.get(browser);
// We leave the newtabSessionId in the map for this browser
// until we stop loading SERP pages or the tab is closed.
}
let impressionId;
if (lazy.serpEventsEnabled && info.hasComponents) {
// The UUID generated by Services.uuid contains leading and trailing braces.
// Need to trim them first.
impressionId = Services.uuid.generateUUID().toString().slice(1, -1);
impressionIdsWithoutEngagementsSet.add(impressionId);
}
this._reportSerpPage(info, source, url);
// For single page apps, we store the page by its original URI so the
// network observers can recover the browser in a context when they only
// have access to the originURL.
let urlKey =
info.isSPA && browser.originalURI?.spec ? browser.originalURI.spec : url;
let item = this._browserInfoByURL.get(urlKey);
let impressionInfo;
if (lazy.serpEventsEnabled && info.hasComponents) {
let partnerCode = "";
if (info.code != "none" && info.code != null) {
partnerCode = info.code;
}
impressionInfo = {
provider: info.provider,
tagged: info.type.startsWith("tagged"),
partnerCode,
source: inContentSource ?? source,
isShoppingPage: info.isShoppingPage,
isPrivate: lazy.PrivateBrowsingUtils.isBrowserPrivate(browser),
};
}
if (item) {
item.browserTelemetryStateMap.set(browser, {
adsReported: false,
adImpressionsReported: false,
impressionId,
urlToComponentMap: null,
impressionInfo,
searchBoxSubmitted: false,
categorizationInfo: null,
adsClicked: 0,
adsVisible: 0,
searchQuery: info.searchQuery,
});
item.count++;
item.source = source;
item.newtabSessionId = newtabSessionId;
} else {
item = {
browserTelemetryStateMap: new WeakMap().set(browser, {
adsReported: false,
adImpressionsReported: false,
impressionId,
urlToComponentMap: null,
impressionInfo,
searchBoxSubmitted: false,
categorizationInfo: null,
adsClicked: 0,
adsVisible: 0,
searchQuery: info.searchQuery,
}),
info,
count: 1,
source,
newtabSessionId,
majorVersion: parseInt(Services.appinfo.version),
channel: lazy.SearchUtils.MODIFIED_APP_CHANNEL,
region: lazy.Region.home,
isSPA: info.isSPA,
};
// For single page apps, we store the page by its original URI so that
// network observers can recover the browser in a context when they only
// have the originURL to work with.
this._browserInfoByURL.set(urlKey, item);
}
this.#browserToItemMap.set(browser, item);
}
/**
* Determines whether or not a browser should be untracked or tracked for
* SERPs who have single page app behaviour.
*
* The over-arching logic:
* 1. Only inspect the browser if the url matches a SERP that is a SPA.
* 2. Recording an engagement if we're tracking the browser and we're going
* to another page.
* 3. Untrack the browser if we're tracking it and switching pages.
* 4. Track the browser if we're now on a default search page.
*
* @param {BrowserElement} browser
* The browser element related to the request.
* @param {string} url
* The url of the request.
* @param {number} loadType
* The loadtype of a the request.
*/
async updateTrackingSinglePageApp(browser, url, loadType) {
let providerInfo = this._getProviderInfoForURL(url);
if (!providerInfo?.isSPA) {
return;
}
let item = this.findItemForBrowser(browser);
let telemetryState = item?.browserTelemetryStateMap.get(browser);
let previousSearchTerm = telemetryState?.searchQuery ?? "";
let searchTerm = this.urlSearchTerms(url, providerInfo);
let searchTermChanged = previousSearchTerm !== searchTerm;
let isSerp = !!this._checkURLForSerpMatch(url, providerInfo);
let browserIsTracked = !!telemetryState;
let isTabHistory = loadType & Ci.nsIDocShell.LOAD_CMD_HISTORY;
// Step 2: Maybe record engagement.
if (browserIsTracked && !isTabHistory && (searchTermChanged || !isSerp)) {
// If we've established we've changed to another SERP, the cause could be
// from a submission event inside the content process. The event is
// sent to the parent and stored as `telemetryState.searchBoxSubmitted`
// but if we check now, it may be too early. Instead, we check with the
// content process directly to see if it recorded a submit event.
let actor = browser.browsingContext.currentWindowGlobal.getActor(
"SearchSERPTelemetry"
);
let didSubmit = await actor.sendQuery("SearchSERPTelemetry:DidSubmit");
if (telemetryState && !telemetryState.searchBoxSubmitted && !didSubmit) {
impressionIdsWithoutEngagementsSet.delete(telemetryState.impressionId);
Glean.serp.engagement.record({
impression_id: telemetryState.impressionId,
action: SearchSERPTelemetryUtils.ACTIONS.CLICKED,
target: SearchSERPTelemetryUtils.COMPONENTS.NON_ADS_LINK,
});
lazy.logConsole.debug("Counting click:", {
impressionId: telemetryState.impressionId,
type: SearchSERPTelemetryUtils.COMPONENTS.NON_ADS_LINK,
URL: url,
});
}
}
// Step 3: Maybe untrack the browser.
if (browserIsTracked && (searchTermChanged || !isSerp)) {
let reason = "";
// If we have to untrack it, it might be due to the user using the
// back/forward button.
if (isTabHistory) {
reason = SearchSERPTelemetryUtils.ABANDONMENTS.NAVIGATION;
}
let actor = browser.browsingContext.currentWindowGlobal.getActor(
"SearchSERPTelemetry"
);
actor.sendAsyncMessage("SearchSERPTelemetry:StopTrackingDocument");
this.stopTrackingBrowser(browser, reason);
browserIsTracked = false;
}
// Step 4: Maybe track the browser.
if (isSerp && !browserIsTracked) {
this.updateTrackingStatus(browser, url, loadType);
let actor = browser.browsingContext.currentWindowGlobal.getActor(
"SearchSERPTelemetry"
);
actor.sendAsyncMessage("SearchSERPTelemetry:WaitForSPAPageLoad");
}
}
/**
* Stops tracking of a tab, for example the tab has loaded a different URL.
* Also records a Glean abandonment event if appropriate.
*
* @param {object} browser The browser associated with the tab to stop being
* tracked.
* @param {string} abandonmentReason
* An optional parameter that specifies why the browser is deemed abandoned.
* The reason will be recorded as part of Glean abandonment telemetry.
* One of SearchSERPTelemetryUtils.ABANDONMENTS.
*/
stopTrackingBrowser(browser, abandonmentReason) {
for (let [url, item] of this._browserInfoByURL) {
if (item.browserTelemetryStateMap.has(browser)) {
let telemetryState = item.browserTelemetryStateMap.get(browser);
let impressionId = telemetryState.impressionId;
if (impressionIdsWithoutEngagementsSet.has(impressionId)) {
this.recordAbandonmentTelemetry(impressionId, abandonmentReason);
}
if (
lazy.serpEventTelemetryCategorization &&
telemetryState.categorizationInfo
) {
SearchSERPCategorizationEventScheduler.sendCallback(browser);
}
item.browserTelemetryStateMap.delete(browser);
item.count--;
}
if (!item.count) {
this._browserInfoByURL.delete(url);
}
}
this.#browserToItemMap.delete(browser);
}
/**
* Calculate how close two urls are in equality.
*
* The scoring system:
* - If the URLs look exactly the same, including the ordering of query
* parameters, the score is Infinity.
* - If the origin is the same, the score is increased by 1. Otherwise the
* score is 0.
* - If the path is the same, the score is increased by 1.
* - For each query parameter, if the key exists the score is increased by 1.
* Likewise if the query parameter values match.
* - If the hash is the same, the score is increased by 1. This includes if
* the hash is missing in both URLs.
*
* @param {URL} url1
* Url to compare.
* @param {URL} url2
* Other url to compare. Ordering shouldn't matter.
* @param {object} [matchOptions]
* Options for checking equality.
* @param {boolean} [matchOptions.path]
* Whether the path must match. Default to false.
* @param {boolean} [matchOptions.paramValues]
* Whether the values of the query parameters must match if the query
* parameter key exists in the other. Defaults to false.
* @returns {number}
* A score of how closely the two URLs match. Returns 0 if there is no
* match or the equality check failed for an enabled match option.
*/
compareUrls(url1, url2, matchOptions = {}) {
// In case of an exact match, well, that's an obvious winner.
if (url1.href == url2.href) {
return Infinity;
}
// Each step we get closer to the two URLs being the same, we increase the
// score. The consumer of this method will use these scores to see which
// of the URLs is the best match.
let score = 0;
if (url1.origin == url2.origin) {
++score;
if (url1.pathname == url2.pathname) {
++score;
for (let [key1, value1] of url1.searchParams) {
// Let's not fuss about the ordering of search params, since the
// score effect will solve that.
if (url2.searchParams.has(key1)) {
++score;
if (url2.searchParams.get(key1) == value1) {
++score;
} else if (matchOptions.paramValues) {
return 0;
}
}
}
if (url1.hash == url2.hash) {
++score;
}
} else if (matchOptions.path) {
return 0;
}
}
return score;
}
/**
* Extracts the search terms from the URL based on the provider info.
*
* @param {string} url
* The URL to inspect.
* @param {object} providerInfo
* The providerInfo associated with the URL.
* @returns {string}
* The search term or if none is found, a blank string.
*/
urlSearchTerms(url, providerInfo) {
if (providerInfo?.queryParamNames?.length) {
let { searchParams } = new URL(url);
for (let queryParamName of providerInfo.queryParamNames) {
let value = searchParams.get(queryParamName);
if (value) {
return value;
}
}
}
return "";
}
findItemForBrowser(browser) {
return this.#browserToItemMap.get(browser);
}
/**
* Parts of the URL, like search params and hashes, may be mutated by scripts
* on a page we're tracking. Since we don't want to keep track of that
* ourselves in order to keep the list of browser objects a weak-referenced
* set, we do optional fuzzy matching of URLs to fetch the most relevant item
* that contains tracking information.
*
* @param {string} url URL to fetch the tracking data for.
* @returns {object} Map containing the following members:
* - {WeakMap} browsers
* Map of browser elements that belong to `url` and their ad report state.
* - {object} info
* Info dictionary as returned by `_checkURLForSerpMatch`.
* - {number} count
* The number of browser element we can most accurately tell we're
* tracking, since they're inside a WeakMap.
*/
_findBrowserItemForURL(url) {
try {
url = new URL(url);
} catch (ex) {
return null;
}
let item;
let currentBestMatch = 0;
for (let [trackingURL, candidateItem] of this._browserInfoByURL) {
if (currentBestMatch === Infinity) {
break;
}
try {
// Make sure to cache the parsed URL object, since there's no reason to
// do it twice.
trackingURL =
candidateItem._trackingURL ||
(candidateItem._trackingURL = new URL(trackingURL));
} catch (ex) {
continue;
}
let score = this.compareUrls(url, trackingURL);
if (score > currentBestMatch) {
item = candidateItem;
currentBestMatch = score;
}
}
return item;
}
// nsIWindowMediatorListener
/**
* This is called when a new window is opened, and handles registration of
* that window if it is a browser window.
*
* @param {nsIAppWindow} appWin The xul window that was opened.
*/
onOpenWindow(appWin) {
let win = appWin.docShell.domWindow;
win.addEventListener(
"load",
() => {
if (
win.document.documentElement.getAttribute("windowtype") !=
"navigator:browser"
) {
return;
}
this._registerWindow(win);
},
{ once: true }
);
}
/**
* Listener that is called when a window is closed, and handles deregistration of
* that window if it is a browser window.
*
* @param {nsIAppWindow} appWin The xul window that was closed.
*/
onCloseWindow(appWin) {
let win = appWin.docShell.domWindow;
if (
win.document.documentElement.getAttribute("windowtype") !=
"navigator:browser"
) {
return;
}
this._unregisterWindow(win);
}
/**
* Adds event listeners for the window and registers it with the content handler.
*
* @param {object} win The window to register.
*/
_registerWindow(win) {
win.gBrowser.tabContainer.addEventListener("TabClose", this);
}
/**
* Removes event listeners for the window and unregisters it with the content
* handler.
*
* @param {object} win The window to unregister.
*/
_unregisterWindow(win) {
for (let tab of win.gBrowser.tabs) {
this.stopTrackingBrowser(
tab.linkedBrowser,
SearchSERPTelemetryUtils.ABANDONMENTS.WINDOW_CLOSE
);
}
win.gBrowser.tabContainer.removeEventListener("TabClose", this);
}
/**
* Searches for provider information for a given url.
*
* @param {string} url The url to match for a provider.
* @returns {Array | null} Returns an array of provider name and the provider information.
*/
_getProviderInfoForURL(url) {
return this._searchProviderInfo.find(info =>
info.searchPageRegexp.test(url)
);
}
/**
* Checks to see if a url is a search partner location, and determines the
* provider and codes used.
*
* @param {string} url The url to match.
* @returns {null|object} Returns null if there is no match found. Otherwise,
* returns an object of strings for provider, code and type.
*/
_checkURLForSerpMatch(url) {
let searchProviderInfo = this._getProviderInfoForURL(url);
if (!searchProviderInfo) {
return null;
}
let queries = new URLSearchParams(url.split("#")[0].split("?")[1]);
let isSPA = !!searchProviderInfo.isSPA;
if (isSPA) {
// A URL may have a specific query parameter denoting a search page.
// If the key was expected but doesn't currently exist, it could be due to
// the initial url containing it until after a page load.
// In that case, ignore this check since most SERPs missing the query
// param will go to the default search page.
let { key, value } = searchProviderInfo.defaultPageQueryParam;
if (key && queries.has(key) && queries.get(key) != value) {
return null;
}
}
// Some URLs can match provider info but also be the provider's homepage
// instead of a SERP.
// Look for the presence of the query parameter that contains a search term.
let hasQuery = false;
let searchQuery = "";
for (let queryParamName of searchProviderInfo.queryParamNames) {
searchQuery = queries.get(queryParamName);
if (searchQuery) {
hasQuery = true;
break;
}
}
if (!hasQuery) {
return null;
}
// Default to organic to simplify things.
// We override type in the sap cases.
let type = "organic";
let code;
if (searchProviderInfo.codeParamName) {
code = queries.get(searchProviderInfo.codeParamName);
if (code) {
// The code is only included if it matches one of the specific ones.
if (searchProviderInfo.taggedCodes.includes(code)) {
type = "tagged";
if (
searchProviderInfo.followOnParamNames &&
searchProviderInfo.followOnParamNames.some(p => queries.has(p))
) {
type += "-follow-on";
}
} else if (searchProviderInfo.organicCodes.includes(code)) {
type = "organic";
} else if (searchProviderInfo.expectedOrganicCodes?.includes(code)) {
code = "none";
} else {
code = "other";
}
} else if (searchProviderInfo.followOnCookies) {
// Especially Bing requires lots of extra work related to cookies.
for (let followOnCookie of searchProviderInfo.followOnCookies) {
if (followOnCookie.extraCodeParamName) {
let eCode = queries.get(followOnCookie.extraCodeParamName);
if (
!eCode ||
!followOnCookie.extraCodePrefixes.some(p => eCode.startsWith(p))
) {
continue;
}
}
// If this cookie is present, it's probably an SAP follow-on.
// This might be an organic follow-on in the same session, but there
// is no way to tell the difference.
for (let cookie of Services.cookies.getCookiesFromHost(
followOnCookie.host,
{}
)) {
if (cookie.name != followOnCookie.name) {
continue;
}
let [cookieParam, cookieValue] = cookie.value
.split("=")
.map(p => p.trim());
if (
cookieParam == followOnCookie.codeParamName &&
searchProviderInfo.taggedCodes.includes(cookieValue)
) {
type = "tagged-follow-on";
code = cookieValue;
break;
}
}
}
}
}
let isShoppingPage = false;
let hasComponents = false;
if (lazy.serpEventsEnabled) {
if (searchProviderInfo.shoppingTab?.regexp) {
isShoppingPage = searchProviderInfo.shoppingTab.regexp.test(url);
}
if (searchProviderInfo.components?.length) {
hasComponents = true;
}
}
return {
provider: searchProviderInfo.telemetryId,
type,
code,
isShoppingPage,
hasComponents,
searchQuery,
isSPA,
};
}
/**
* Logs telemetry for a search provider visit.
*
* @param {object} info The search provider information.
* @param {string} info.provider The name of the provider.
* @param {string} info.type The type of search.
* @param {string} [info.code] The code for the provider.
* @param {string} source Where the search originated from.
* @param {string} url The url that was matched (for debug logging only).
*/
_reportSerpPage(info, source, url) {
let payload = `${info.provider}:${info.type}:${info.code || "none"}`;
Services.telemetry.keyedScalarAdd(
SEARCH_CONTENT_SCALAR_BASE + source,
payload,
1
);
lazy.logConsole.debug("Impression:", payload, url);
}
}
/**
* ContentHandler deals with handling telemetry of the content within a tab -
* when ads detected and when they are selected.
*/
class ContentHandler {
/**
* Constructor.
*
* @param {object} options
* The options for the handler.
* @param {Map} options.browserInfoByURL
* The map of urls from TelemetryHandler.
* @param {Function} options.getProviderInfoForURL
* A function that obtains the provider information for a url.
*/
constructor(options) {
this._browserInfoByURL = options.browserInfoByURL;
this._findBrowserItemForURL = options.findBrowserItemForURL;
this._checkURLForSerpMatch = options.checkURLForSerpMatch;
this._findItemForBrowser = options.findItemForBrowser;
}
/**
* Initializes the content handler. This will also set up the shared data that is
* shared with the SearchTelemetryChild actor.
*
* @param {Array} providerInfo
* The provider information for the search telemetry to record.
*/
init(providerInfo) {
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.PROVIDER_INFO,
providerInfo
);
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.LOAD_TIMEOUT,
ADLINK_CHECK_TIMEOUT_MS
);
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.SPA_LOAD_TIMEOUT,
SPA_ADLINK_CHECK_TIMEOUT_MS
);
Services.obs.addObserver(this, "http-on-examine-response");
Services.obs.addObserver(this, "http-on-examine-cached-response");
Services.obs.addObserver(this, "http-on-stop-request");
}
/**
* Uninitializes the content handler.
*/
uninit() {
Services.obs.removeObserver(this, "http-on-examine-response");
Services.obs.removeObserver(this, "http-on-examine-cached-response");
Services.obs.removeObserver(this, "http-on-stop-request");
}
/**
* Test-only function to override the search provider information for use
* with tests. Passes it to the SearchTelemetryChild actor.
*
* @param {object} providerInfo @see SEARCH_PROVIDER_INFO for type information.
*/
overrideSearchTelemetryForTests(providerInfo) {
Services.ppmm.sharedData.set("SearchTelemetry:ProviderInfo", providerInfo);
}
/**
* Reports bandwidth used by the given channel if it is used by search requests.
*
* @param {object} aChannel The channel that generated the activity.
*/
_reportChannelBandwidth(aChannel) {
if (!(aChannel instanceof Ci.nsIChannel)) {
return;
}
let wrappedChannel = ChannelWrapper.get(aChannel);
let getTopURL = channel => {
// top-level document
if (
channel.loadInfo &&
channel.loadInfo.externalContentPolicyType ==
Ci.nsIContentPolicy.TYPE_DOCUMENT
) {
return channel.finalURL;
}
// iframe
let frameAncestors;
try {
frameAncestors = channel.frameAncestors;
} catch (e) {
frameAncestors = null;
}
if (frameAncestors) {
let ancestor = frameAncestors.find(obj => obj.frameId == 0);
if (ancestor) {
return ancestor.url;
}
}
// top-level resource
if (channel.loadInfo && channel.loadInfo.loadingPrincipal) {
return channel.loadInfo.loadingPrincipal.spec;
}
return null;
};
let topUrl = getTopURL(wrappedChannel);
if (!topUrl) {
return;
}
let info = this._checkURLForSerpMatch(topUrl);
if (!info) {
return;
}
let bytesTransferred =
wrappedChannel.requestSize + wrappedChannel.responseSize;
let { provider } = info;
let isPrivate =
wrappedChannel.loadInfo &&
wrappedChannel.loadInfo.originAttributes.privateBrowsingId > 0;
if (isPrivate) {
provider += `-${SEARCH_TELEMETRY_PRIVATE_BROWSING_KEY_SUFFIX}`;
}
Services.telemetry.keyedScalarAdd(
SEARCH_DATA_TRANSFERRED_SCALAR,
provider,
bytesTransferred
);
}
observe(aSubject, aTopic, aData) {
switch (aTopic) {
case "http-on-stop-request":
this._reportChannelBandwidth(aSubject);
break;
case "http-on-examine-response":
case "http-on-examine-cached-response":
this.observeActivity(aSubject);
break;
}
}
/**
* Listener that observes network activity, so that we can determine if a link
* from a search provider page was followed, and if then if that link was an
* ad click or not.
*
* @param {nsIChannel} channel The channel that generated the activity.
*/
observeActivity(channel) {
if (!(channel instanceof Ci.nsIChannel)) {
return;
}
let wrappedChannel = ChannelWrapper.get(channel);
// The channel we're observing might be a redirect of a channel we've
// observed before.
if (wrappedChannel._adClickRecorded) {
lazy.logConsole.debug("Ad click already recorded");
return;
}
Services.tm.dispatchToMainThread(() => {
// We suspect that No Content (204) responses are used to transfer or
// update beacons. They used to lead to double-counting ad-clicks, so let's
// ignore them.
if (wrappedChannel.statusCode == 204) {
lazy.logConsole.debug("Ignoring activity from ambiguous responses");
return;
}
// The wrapper is consistent across redirects, so we can use it to track state.
let originURL = wrappedChannel.originURI && wrappedChannel.originURI.spec;
let item = this._findBrowserItemForURL(originURL);
if (!originURL || !item) {
return;
}
let url = wrappedChannel.finalURL;
let providerInfo = item.info.provider;
let info = this._searchProviderInfo.find(provider => {
return provider.telemetryId == providerInfo;
});
// If an error occurs with Glean SERP telemetry logic, avoid
// disrupting legacy telemetry.
try {
this.#maybeRecordSERPTelemetry(wrappedChannel, item, info);
} catch (ex) {
lazy.logConsole.error(ex);
}
if (!info.extraAdServersRegexps?.some(regex => regex.test(url))) {
return;
}
try {
Services.telemetry.keyedScalarAdd(
SEARCH_AD_CLICKS_SCALAR_BASE + item.source,
`${info.telemetryId}:${item.info.type}`,
1
);
wrappedChannel._adClickRecorded = true;
if (item.newtabSessionId) {
Glean.newtabSearchAd.click.record({
newtab_visit_id: item.newtabSessionId,
search_access_point: item.source,
is_follow_on: item.info.type.endsWith("follow-on"),
is_tagged: item.info.type.startsWith("tagged"),
telemetry_id: item.info.provider,
});
}
lazy.logConsole.debug("Counting ad click in page for:", {
source: item.source,
originURL,
URL: url,
});
} catch (e) {
console.error(e);
}
});
}
/**
* Checks if a request should record an ad click if it can be traced to a
* browser containing an observed SERP.
*
* @param {ChannelWrapper} wrappedChannel
* The wrapped channel.
* @param {object} item
* The browser item associated with the origin URL of the request.
* @param {object} info
* The search provider info associated with the item.
*/
#maybeRecordSERPTelemetry(wrappedChannel, item, info) {
if (!lazy.serpEventsEnabled) {
return;
}
if (wrappedChannel._recordedClick) {
lazy.logConsole.debug("Click already recorded.");
return;
}
let originURL = wrappedChannel.originURI?.spec;
let url = wrappedChannel.finalURL;
// Some channels re-direct by loading pages that return 200. The result
// is the channel will have an originURL that changes from the SERP to
// either a nonAdsRegexp or an extraAdServersRegexps. This is typical
// for loading a page in a new tab. The channel will have changed so any
// properties attached to them to record state (e.g. _recordedClick)
// won't be present.
if (
info.nonAdsLinkRegexps.some(r => r.test(originURL)) ||
info.extraAdServersRegexps.some(r => r.test(originURL))
) {
return;
}
// A click event is recorded if a user loads a resource from an
// originURL that is a SERP.
//
// Typically, we only want top level loads containing documents to avoid
// recording any event on an in-page resource a SERP might load
// (e.g. CSS files).
//
// The exception to this is if a subframe loads a resource that matches
// a non ad link. Some SERPs encode non ad search results with a URL
// that gets loaded into an iframe, which then tells the container of
// the iframe to change the location of the page.
if (
wrappedChannel.channel.isDocument &&
(wrappedChannel.channel.loadInfo.isTopLevelLoad ||
info.nonAdsLinkRegexps.some(r => r.test(url)))
) {
let browser = wrappedChannel.browserElement;
// If the load is from history, don't record an event.
if (
browser?.browsingContext.webProgress?.loadType &
Ci.nsIDocShell.LOAD_CMD_HISTORY
) {
lazy.logConsole.debug("Ignoring load from history");
return;
}
// Step 1: Check if the browser associated with the request was a
// tracked SERP.
let start = Cu.now();
let telemetryState;
let isFromNewtab = false;
if (item.browserTelemetryStateMap.has(browser)) {
// If the map contains the browser, then it means that the request is
// the SERP is going from one page to another. We know this because
// previous conditions prevent non-top level loads from occuring here.
telemetryState = item.browserTelemetryStateMap.get(browser);
} else if (browser) {
// Alternatively, it could be the case that the request is occuring in
// a new tab but was triggered by one of the browsers in the state map.
// If only one browser exists in the state map, it must be that one.
if (item.count === 1) {
let sourceBrowsers = ChromeUtils.nondeterministicGetWeakMapKeys(
item.browserTelemetryStateMap
);
if (sourceBrowsers?.length) {
telemetryState = item.browserTelemetryStateMap.get(
sourceBrowsers[0]
);
}
} else if (item.count > 1) {
// If the count is more than 1, then multiple open SERPs contain the
// same search term, so try to find the specific browser that opened
// the request.
let tabBrowser = browser.getTabBrowser();
let tab = tabBrowser.getTabForBrowser(browser).openerTab;
// A tab will not always have an openerTab, as first tabs in new
// windows don't have an openerTab.
// Bug 1867582: We should also handle the case where multiple tabs
// contain the same search term.
if (tab) {
telemetryState = item.browserTelemetryStateMap.get(
tab.linkedBrowser
);
}
}
if (telemetryState) {
isFromNewtab = true;
}
}
// Step 2: If we have telemetryState, the browser object must be
// associated with another browser that is tracked. Try to find the
// component type on the SERP responsible for the request.
// Exceptions:
// - If a searchbox was used to initiate the load, don't record another
// engagement because the event was logged elsewhere.
// - If the ad impression hasn't been recorded yet, we have no way of
// knowing precisely what kind of component was selected.
let isSerp = false;
if (
telemetryState &&
telemetryState.adImpressionsReported &&
!telemetryState.searchBoxSubmitted
) {
if (info.searchPageRegexp?.test(originURL)) {
isSerp = true;
}
let startFindComponent = Cu.now();
let parsedUrl = new URL(url);
// Determine the component type of the link.
let type;
for (let [
storedUrl,
componentType,
] of telemetryState.urlToComponentMap.entries()) {
// The URL we're navigating to may have more query parameters if
// the provider adds query parameters when the user clicks on a link.
// On the other hand, the URL we are navigating to may have have
// fewer query parameters because of query param stripping.
// Thus, if a query parameter is missing, a match can still be made
// provided keys that exist in both URLs contain equal values.
let score = SearchSERPTelemetry.compareUrls(storedUrl, parsedUrl, {
paramValues: true,
path: true,
});
if (score) {
type = componentType;
break;
}
}
ChromeUtils.addProfilerMarker(
"SearchSERPTelemetry._observeActivity",
startFindComponent,
"Find component for URL"
);
// Default value for URLs that don't match any components categorized
// on the page.
if (!type) {
type = SearchSERPTelemetryUtils.COMPONENTS.NON_ADS_LINK;
}
if (
type == SearchSERPTelemetryUtils.COMPONENTS.REFINED_SEARCH_BUTTONS
) {
SearchSERPTelemetry.setBrowserContentSource(
browser,
SearchSERPTelemetryUtils.INCONTENT_SOURCES.REFINE_ON_SERP
);
} else if (isSerp && isFromNewtab) {
SearchSERPTelemetry.setBrowserContentSource(
browser,
SearchSERPTelemetryUtils.INCONTENT_SOURCES.OPENED_IN_NEW_TAB
);
}
// Step 3: Record the engagement.
impressionIdsWithoutEngagementsSet.delete(telemetryState.impressionId);
if (AD_COMPONENTS.includes(type)) {
telemetryState.adsClicked += 1;
}
Glean.serp.engagement.record({
impression_id: telemetryState.impressionId,
action: SearchSERPTelemetryUtils.ACTIONS.CLICKED,
target: type,
});
lazy.logConsole.debug("Counting click:", {
impressionId: telemetryState.impressionId,
type,
URL: url,
});
// Prevent re-directed channels from being examined more than once.
wrappedChannel._recordedClick = true;
}
ChromeUtils.addProfilerMarker(
"SearchSERPTelemetry._observeActivity",
start,
"Maybe record user engagement."
);
}
}
/**
* Logs telemetry for a page with adverts, if it is one of the partner search
* provider pages that we're tracking.
*
* @param {object} info
* The search provider information for the page.
* @param {boolean} info.hasAds
* Whether or not the page has adverts.
* @param {string} info.url
* The url of the page.
* @param {object} browser
* The browser associated with the page.
*/
_reportPageWithAds(info, browser) {
let item = this._findItemForBrowser(browser);
if (!item) {
lazy.logConsole.warn(
"Expected to report URI for",
info.url,
"with ads but couldn't find the information"
);
return;
}
let telemetryState = item.browserTelemetryStateMap.get(browser);
if (telemetryState.adsReported) {
lazy.logConsole.debug(
"Ad was previously reported for browser with URI",
info.url
);
return;
}
lazy.logConsole.debug(
"Counting ads in page for",
item.info.provider,
item.info.type,
item.source,
info.url
);
Services.telemetry.keyedScalarAdd(
SEARCH_WITH_ADS_SCALAR_BASE + item.source,
`${item.info.provider}:${item.info.type}`,
1
);
Services.obs.notifyObservers(null, "reported-page-with-ads");
telemetryState.adsReported = true;
if (item.newtabSessionId) {
Glean.newtabSearchAd.impression.record({
newtab_visit_id: item.newtabSessionId,
search_access_point: item.source,
is_follow_on: item.info.type.endsWith("follow-on"),
is_tagged: item.info.type.startsWith("tagged"),
telemetry_id: item.info.provider,
});
}
}
/**
* Logs ad impression telemetry for a page with adverts, if it is
* one of the partner search provider pages that we're tracking.
*
* @param {object} info
* The search provider information for the page.
* @param {string} info.url
* The url of the page.
* @param {Map<string, object>} info.adImpressions
* A map of ad impressions found for the page, where the key
* is the type of ad component and the value is an object
* containing the number of ads that were loaded, visible,
* and hidden.
* @param {Map<string, string>} info.hrefToComponentMap
* A map of hrefs to their component type. Contains both ads
* and non-ads.
* @param {object} browser
* The browser associated with the page.
*/
_reportPageWithAdImpressions(info, browser) {
let item = this._findItemForBrowser(browser);
if (!item) {
return;
}
let telemetryState = item.browserTelemetryStateMap.get(browser);
if (
lazy.serpEventsEnabled &&
info.adImpressions &&
telemetryState &&
!telemetryState.adImpressionsReported
) {
for (let [componentType, data] of info.adImpressions.entries()) {
telemetryState.adsVisible += data.adsVisible;
lazy.logConsole.debug("Counting ad:", { type: componentType, ...data });
Glean.serp.adImpression.record({
impression_id: telemetryState.impressionId,
component: componentType,
ads_loaded: data.adsLoaded,
ads_visible: data.adsVisible,
ads_hidden: data.adsHidden,
});
}
// Convert hrefToComponentMap to a urlToComponentMap in order to cache
// the query parameters of the href.
let urlToComponentMap = new Map();
for (let [href, adType] of info.hrefToComponentMap) {
urlToComponentMap.set(new URL(href), adType);
}
telemetryState.urlToComponentMap = urlToComponentMap;
telemetryState.adImpressionsReported = true;
Services.obs.notifyObservers(null, "reported-page-with-ad-impressions");
}
}
/**
* Records a page action from a SERP page. Normally, actions are tracked in
* parent process by observing network events but some actions are not
* possible to detect outside of subscribing to the child process.
*
* @param {object} info
* The search provider infomation for the page.
* @param {string} info.target
* The target component that was interacted with.
* @param {string} info.action
* The action taken on the page.
* @param {object} browser
* The browser associated with the page.
*/
_reportPageAction(info, browser) {
let item = this._findItemForBrowser(browser);
if (!item) {
return;
}
let telemetryState = item.browserTelemetryStateMap.get(browser);
let impressionId = telemetryState?.impressionId;
if (info.target && impressionId) {
lazy.logConsole.debug(`Recorded page action:`, {
impressionId: telemetryState.impressionId,
target: info.target,
action: info.action,
});
Glean.serp.engagement.record({
impression_id: impressionId,
action: info.action,
target: info.target,
});
impressionIdsWithoutEngagementsSet.delete(impressionId);
</