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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, {
ClientID: "resource://gre/modules/ClientID.sys.mjs",
ContextualIdentityService:
"resource://gre/modules/ContextualIdentityService.sys.mjs",
});
const RECOMMENDATION_ENABLED = "browser.discovery.enabled";
const TELEMETRY_ENABLED = "datareporting.healthreport.uploadEnabled";
const TAAR_COOKIE_NAME = "taarId";
export const Discovery = {
set enabled(val) {
val = !!val;
if (val && !lazy.gTelemetryEnabled) {
throw Error("unable to turn on recommendations");
}
Services.prefs.setBoolPref(RECOMMENDATION_ENABLED, val);
},
get enabled() {
return lazy.gTelemetryEnabled && lazy.gRecommendationEnabled;
},
reset() {
return DiscoveryInternal.update(true);
},
update() {
return DiscoveryInternal.update();
},
};
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"gRecommendationEnabled",
RECOMMENDATION_ENABLED,
false,
Discovery.update
);
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"gTelemetryEnabled",
TELEMETRY_ENABLED,
false,
Discovery.update
);
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"gCachedClientID",
"toolkit.telemetry.cachedClientID",
"",
Discovery.reset
);
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"gContainersEnabled",
"browser.discovery.containers.enabled",
false,
Discovery.reset
);
Services.obs.addObserver(Discovery.update, "contextual-identity-created");
const DiscoveryInternal = {
get sites() {
delete this.sites;
this.sites = Services.prefs
.getCharPref("browser.discovery.sites", "")
.split(",");
return this.sites;
},
getContextualIDs() {
// There is never a zero id, this is just for use in update.
let IDs = [0];
if (lazy.gContainersEnabled) {
lazy.ContextualIdentityService.getPublicIdentities().forEach(identity => {
IDs.push(identity.userContextId);
});
}
return IDs;
},
async update(reset = false) {
if (reset || !Discovery.enabled) {
for (let site of this.sites) {
Services.cookies.remove(site, TAAR_COOKIE_NAME, "/", {});
lazy.ContextualIdentityService.getPublicIdentities().forEach(
identity => {
let { userContextId } = identity;
Services.cookies.remove(site, TAAR_COOKIE_NAME, "/", {
userContextId,
});
}
);
}
}
if (Discovery.enabled) {
// If the client id is not cached, wait for the notification that it is
// cached. This will happen shortly after startup in TelemetryController.sys.mjs.
// When that happens, we'll get a pref notification for the cached id,
// which will call update again.
if (!lazy.gCachedClientID) {
return;
}
let id = await lazy.ClientID.getClientIdHash();
for (let site of this.sites) {
// This cookie gets tied down as much as possible. Specifically,
// SameSite, Secure, HttpOnly and non-PrivateBrowsing.
for (let userContextId of this.getContextualIDs()) {
let originAttributes = { privateBrowsingId: 0 };
if (userContextId > 0) {
originAttributes.userContextId = userContextId;
}
if (
Services.cookies.cookieExists(
site,
"/",
TAAR_COOKIE_NAME,
originAttributes
)
) {
continue;
}
Services.cookies.add(
site,
"/",
TAAR_COOKIE_NAME,
id,
true, // secure
true, // httpOnly
true, // session
Date.now(),
originAttributes,
Ci.nsICookie.SAMESITE_LAX,
Ci.nsICookie.SCHEME_HTTPS
);
}
}
}
},
};
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