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gecko-dev/services/fxaccounts/FxAccounts.jsm

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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/. */
"use strict";
const { PromiseUtils } = ChromeUtils.import(
"resource://gre/modules/PromiseUtils.jsm"
);
const { CryptoUtils } = ChromeUtils.import(
"resource://services-crypto/utils.js"
);
const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
const { XPCOMUtils } = ChromeUtils.import(
"resource://gre/modules/XPCOMUtils.jsm"
);
const { clearTimeout, setTimeout } = ChromeUtils.import(
"resource://gre/modules/Timer.jsm"
);
const { FxAccountsStorageManager } = ChromeUtils.import(
"resource://gre/modules/FxAccountsStorage.jsm"
);
const {
ASSERTION_LIFETIME,
ASSERTION_USE_PERIOD,
CERT_LIFETIME,
ERRNO_INVALID_AUTH_TOKEN,
ERRNO_INVALID_FXA_ASSERTION,
ERROR_AUTH_ERROR,
ERROR_INVALID_PARAMETER,
ERROR_NO_ACCOUNT,
ERROR_OFFLINE,
ERROR_TO_GENERAL_ERROR_CLASS,
ERROR_UNKNOWN,
ERROR_UNVERIFIED_ACCOUNT,
FXA_PWDMGR_MEMORY_FIELDS,
FXA_PWDMGR_PLAINTEXT_FIELDS,
FXA_PWDMGR_REAUTH_WHITELIST,
FXA_PWDMGR_SECURE_FIELDS,
FX_OAUTH_CLIENT_ID,
KEY_LIFETIME,
ON_ACCOUNT_STATE_CHANGE_NOTIFICATION,
ONLOGIN_NOTIFICATION,
ONLOGOUT_NOTIFICATION,
ONVERIFIED_NOTIFICATION,
ON_DEVICE_DISCONNECTED_NOTIFICATION,
POLL_SESSION,
PREF_ACCOUNT_ROOT,
PREF_LAST_FXA_USER,
SERVER_ERRNO_TO_ERROR,
log,
logPII,
logManager,
} = ChromeUtils.import("resource://gre/modules/FxAccountsCommon.js");
ChromeUtils.defineModuleGetter(
this,
"FxAccountsClient",
"resource://gre/modules/FxAccountsClient.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsOAuthGrantClient",
"resource://gre/modules/FxAccountsOAuthGrantClient.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsConfig",
"resource://gre/modules/FxAccountsConfig.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"jwcrypto",
"resource://services-crypto/jwcrypto.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsCommands",
"resource://gre/modules/FxAccountsCommands.js"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsDevice",
"resource://gre/modules/FxAccountsDevice.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsKeys",
"resource://gre/modules/FxAccountsKeys.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsProfile",
"resource://gre/modules/FxAccountsProfile.jsm"
);
ChromeUtils.defineModuleGetter(
this,
"FxAccountsTelemetry",
"resource://gre/modules/FxAccountsTelemetry.jsm"
);
XPCOMUtils.defineLazyModuleGetters(this, {
Preferences: "resource://gre/modules/Preferences.jsm",
});
XPCOMUtils.defineLazyPreferenceGetter(
this,
"FXA_ENABLED",
"identity.fxaccounts.enabled",
true
);
XPCOMUtils.defineLazyPreferenceGetter(
this,
"USE_SESSION_TOKENS_FOR_OAUTH",
"identity.fxaccounts.useSessionTokensForOAuth"
);
// An AccountState object holds all state related to one specific account.
// It is considered "private" to the FxAccounts modules.
// Only one AccountState is ever "current" in the FxAccountsInternal object -
// whenever a user logs out or logs in, the current AccountState is discarded,
// making it impossible for the wrong state or state data to be accidentally
// used.
// In addition, it has some promise-related helpers to ensure that if an
// attempt is made to resolve a promise on a "stale" state (eg, if an
// operation starts, but a different user logs in before the operation
// completes), the promise will be rejected.
// It is intended to be used thusly:
// somePromiseBasedFunction: function() {
// let currentState = this.currentAccountState;
// return someOtherPromiseFunction().then(
// data => currentState.resolve(data)
// );
// }
// If the state has changed between the function being called and the promise
// being resolved, the .resolve() call will actually be rejected.
var AccountState = (this.AccountState = function(storageManager) {
this.storageManager = storageManager;
this.inFlightTokenRequests = new Map();
this.promiseInitialized = this.storageManager
.getAccountData()
.then(data => {
this.oauthTokens = data && data.oauthTokens ? data.oauthTokens : {};
})
.catch(err => {
log.error("Failed to initialize the storage manager", err);
// Things are going to fall apart, but not much we can do about it here.
});
});
AccountState.prototype = {
oauthTokens: null,
whenVerifiedDeferred: null,
whenKeysReadyDeferred: null,
// If the storage manager has been nuked then we are no longer current.
get isCurrent() {
return this.storageManager != null;
},
abort() {
if (this.whenVerifiedDeferred) {
this.whenVerifiedDeferred.reject(
new Error("Verification aborted; Another user signing in")
);
this.whenVerifiedDeferred = null;
}
if (this.whenKeysReadyDeferred) {
this.whenKeysReadyDeferred.reject(
new Error("Verification aborted; Another user signing in")
);
this.whenKeysReadyDeferred = null;
}
this.inFlightTokenRequests.clear();
return this.signOut();
},
// Clobber all cached data and write that empty data to storage.
async signOut() {
this.cert = null;
this.keyPair = null;
this.oauthTokens = null;
this.inFlightTokenRequests.clear();
// Avoid finalizing the storageManager multiple times (ie, .signOut()
// followed by .abort())
if (!this.storageManager) {
return;
}
const storageManager = this.storageManager;
this.storageManager = null;
await storageManager.deleteAccountData();
await storageManager.finalize();
},
// Get user account data. Optionally specify explicit field names to fetch
// (and note that if you require an in-memory field you *must* specify the
// field name(s).)
getUserAccountData(fieldNames = null) {
if (!this.isCurrent) {
return Promise.reject(new Error("Another user has signed in"));
}
return this.storageManager.getAccountData(fieldNames).then(result => {
return this.resolve(result);
});
},
updateUserAccountData(updatedFields) {
if (!this.isCurrent) {
return Promise.reject(new Error("Another user has signed in"));
}
return this.storageManager.updateAccountData(updatedFields);
},
resolve(result) {
if (!this.isCurrent) {
log.info(
"An accountState promise was resolved, but was actually rejected" +
" due to a different user being signed in. Originally resolved" +
" with",
result
);
return Promise.reject(new Error("A different user signed in"));
}
return Promise.resolve(result);
},
reject(error) {
// It could be argued that we should just let it reject with the original
// error - but this runs the risk of the error being (eg) a 401, which
// might cause the consumer to attempt some remediation and cause other
// problems.
if (!this.isCurrent) {
log.info(
"An accountState promise was rejected, but we are ignoring that " +
"reason and rejecting it due to a different user being signed in. " +
"Originally rejected with",
error
);
return Promise.reject(new Error("A different user signed in"));
}
return Promise.reject(error);
},
// Abstractions for storage of cached tokens - these are all sync, and don't
// handle revocation etc - it's just storage (and the storage itself is async,
// but we don't return the storage promises, so it *looks* sync)
// These functions are sync simply so we can handle "token races" - when there
// are multiple in-flight requests for the same scope, we can detect this
// and revoke the redundant token.
// A preamble for the cache helpers...
_cachePreamble() {
if (!this.isCurrent) {
throw new Error("Another user has signed in");
}
},
// Set a cached token. |tokenData| must have a 'token' element, but may also
// have additional fields.
// The 'get' functions below return the entire |tokenData| value.
setCachedToken(scopeArray, tokenData) {
this._cachePreamble();
if (!tokenData.token) {
throw new Error("No token");
}
let key = getScopeKey(scopeArray);
this.oauthTokens[key] = tokenData;
// And a background save...
this._persistCachedTokens();
},
// Return data for a cached token or null (or throws on bad state etc)
getCachedToken(scopeArray) {
this._cachePreamble();
let key = getScopeKey(scopeArray);
let result = this.oauthTokens[key];
if (result) {
// later we might want to check an expiry date - but we currently
// have no such concept, so just return it.
log.trace("getCachedToken returning cached token");
return result;
}
return null;
},
// Remove a cached token from the cache. Does *not* revoke it from anywhere.
// Returns the entire token entry if found, null otherwise.
removeCachedToken(token) {
this._cachePreamble();
let data = this.oauthTokens;
for (let [key, tokenValue] of Object.entries(data)) {
if (tokenValue.token == token) {
delete data[key];
// And a background save...
this._persistCachedTokens();
return tokenValue;
}
}
return null;
},
// A hook-point for tests. Returns a promise that's ignored in most cases
// (notable exceptions are tests and when we explicitly are saving the entire
// set of user data.)
_persistCachedTokens() {
this._cachePreamble();
return this.updateUserAccountData({ oauthTokens: this.oauthTokens }).catch(
err => {
log.error("Failed to update cached tokens", err);
}
);
},
};
/* Given an array of scopes, make a string key by normalizing. */
function getScopeKey(scopeArray) {
let normalizedScopes = scopeArray.map(item => item.toLowerCase());
return normalizedScopes.sort().join("|");
}
function getPropertyDescriptor(obj, prop) {
return (
Object.getOwnPropertyDescriptor(obj, prop) ||
getPropertyDescriptor(Object.getPrototypeOf(obj), prop)
);
}
/**
* Copies properties from a given object to another object.
*
* @param from (object)
* The object we read property descriptors from.
* @param to (object)
* The object that we set property descriptors on.
* @param thisObj (object)
* The object that will be used to .bind() all function properties we find to.
* @param keys ([...])
* The names of all properties to be copied.
*/
function copyObjectProperties(from, to, thisObj, keys) {
for (let prop of keys) {
// Look for the prop in the prototype chain.
let desc = getPropertyDescriptor(from, prop);
if (typeof desc.value == "function") {
desc.value = desc.value.bind(thisObj);
}
if (desc.get) {
desc.get = desc.get.bind(thisObj);
}
if (desc.set) {
desc.set = desc.set.bind(thisObj);
}
Object.defineProperty(to, prop, desc);
}
}
/**
* The public API.
*
* TODO - *all* non-underscore stuff here should have sphinx docstrings so
* that docs magically appear on https://firefox-source-docs.mozilla.org/
* (although |./mach doc| is broken on windows (bug 1232403) and on Linux for
* markh (some obscure npm issue he gave up on) - so later...)
*/
class FxAccounts {
constructor(mocks = null) {
this._internal = new FxAccountsInternal();
if (mocks) {
// it's slightly unfortunate that we need to mock the main "internal" object
// before calling initialize, primarily so a mock `newAccountState` is in
// place before initialize calls it, but we need to initialize the
// "sub-object" mocks after. This can probably be fixed, but whatever...
copyObjectProperties(
mocks,
this._internal,
this._internal,
Object.keys(mocks).filter(key => !["device", "commands"].includes(key))
);
}
this._internal.initialize();
// allow mocking our "sub-objects" too.
if (mocks) {
for (let subobject of [
"currentAccountState",
"keys",
"fxaPushService",
"device",
"commands",
]) {
if (typeof mocks[subobject] == "object") {
copyObjectProperties(
mocks[subobject],
this._internal[subobject],
this._internal[subobject],
Object.keys(mocks[subobject])
);
}
}
}
}
get commands() {
return this._internal.commands;
}
static get config() {
return FxAccountsConfig;
}
get device() {
return this._internal.device;
}
get keys() {
return this._internal.keys;
}
get telemetry() {
return this._internal.telemetry;
}
_withCurrentAccountState(func) {
return this._internal.withCurrentAccountState(func);
}
_withVerifiedAccountState(func) {
return this._internal.withVerifiedAccountState(func);
}
_withSessionToken(func, mustBeVerified = true) {
return this._internal.withSessionToken(func, mustBeVerified);
}
/**
* Returns an array listing all the OAuth clients connected to the
* authenticated user's account. This includes browsers and web sessions - no
* filtering is done of the set returned by the FxA server.
*
* @typedef {Object} AttachedClient
* @property {String} id - OAuth `client_id` of the client.
* @property {Number} lastAccessedDaysAgo - How many days ago the client last
* accessed the FxA server APIs.
*
* @returns {Array.<AttachedClient>} A list of attached clients.
*/
async listAttachedOAuthClients() {
// We expose last accessed times in 'days ago'
const ONE_DAY = 24 * 60 * 60 * 1000;
return this._withSessionToken(async sessionToken => {
const attachedClients = await this._internal.fxAccountsClient.attachedClients(
sessionToken
);
// We should use the server timestamp here - bug 1595635
let now = Date.now();
return attachedClients.map(client => {
const daysAgo = client.lastAccessTime
? Math.max(Math.floor((now - client.lastAccessTime) / ONE_DAY), 0)
: null;
return {
id: client.clientId,
lastAccessedDaysAgo: daysAgo,
};
});
});
}
/**
* Retrieves an OAuth authorization code.
*
* @param {Object} options
* @param options.client_id
* @param options.state
* @param options.scope
* @param options.access_type
* @param options.code_challenge_method
* @param options.code_challenge
* @param [options.keys_jwe]
* @returns {Promise<Object>} Object containing "code" and "state" properties.
*/
authorizeOAuthCode(options) {
return this._withVerifiedAccountState(async state => {
const { sessionToken } = await state.getUserAccountData(["sessionToken"]);
const params = { ...options };
if (params.keys_jwk) {
const jwk = JSON.parse(
new TextDecoder().decode(
ChromeUtils.base64URLDecode(params.keys_jwk, { padding: "reject" })
)
);
params.keys_jwe = await this._internal.createKeysJWE(
params.client_id,
params.scope,
jwk
);
delete params.keys_jwk;
}
try {
return await this._internal.fxAccountsClient.oauthAuthorize(
sessionToken,
params
);
} catch (err) {
throw this._internal._errorToErrorClass(err);
}
});
}
/**
* Get an OAuth token for the user.
* If you need a corresponding scoped key to go along with this
* token, consider using the new 'getAccessToken' method instead.
*
* @param options
* {
* scope: (string/array) the oauth scope(s) being requested. As a
* convenience, you may pass a string if only one scope is
* required, or an array of strings if multiple are needed.
* }
*
* @return Promise.<string | Error>
* The promise resolves the oauth token as a string or rejects with
* an error object ({error: ERROR, details: {}}) of the following:
* INVALID_PARAMETER
* NO_ACCOUNT
* UNVERIFIED_ACCOUNT
* NETWORK_ERROR
* AUTH_ERROR
* UNKNOWN_ERROR
*/
async getOAuthToken(options = {}) {
try {
return await this._internal.getOAuthToken(options);
} catch (err) {
throw this._internal._errorToErrorClass(err);
}
}
/**
* Fetches an OAuth token based on the given scope
* and its key in a single operation.
*
* @param scope {String} the requested OAuth scope
* @param ttl {Number} OAuth token TTL
* @returns {Promise<Object>} Object containing "scope", "token"
* and "key" properties.
*/
async getAccessToken(scope, ttl) {
log.debug("getAccessToken enter");
const token = await this._internal.getOAuthToken({ scope, ttl });
const ACCT_DATA_FIELDS = ["scopedKeys"];
return this._withCurrentAccountState(async currentState => {
const data = await currentState.getUserAccountData(ACCT_DATA_FIELDS);
const scopedKeys = data.scopedKeys || {};
let key;
if (!scopedKeys.hasOwnProperty(scope)) {
log.debug(`Fetching scopedKeys data for ${scope}`);
const newKeyData = await this._internal.keys.getScopedKeys(
scope,
FX_OAUTH_CLIENT_ID
);
scopedKeys[scope] = newKeyData[scope] || null;
await currentState.updateUserAccountData({ scopedKeys });
} else {
log.debug(`Using cached scopedKeys data for ${scope}`);
}
key = scopedKeys[scope];
return {
scope,
token,
key,
};
});
}
/**
* Remove an OAuth token from the token cache. Callers should call this
* after they determine a token is invalid, so a new token will be fetched
* on the next call to getOAuthToken().
*
* @param options
* {
* token: (string) A previously fetched token.
* }
* @return Promise.<undefined> This function will always resolve, even if
* an unknown token is passed.
*/
removeCachedOAuthToken(options) {
return this._internal.removeCachedOAuthToken(options);
}
/**
* Get details about the user currently signed in to Firefox Accounts.
*
* @return Promise
* The promise resolves to the credentials object of the signed-in user:
* {
* email: String: The user's email address
* uid: String: The user's unique id
* verified: Boolean: email verification status
* displayName: String or null if not known.
* avatar: URL of the avatar for the user. May be the default
* avatar, or null in edge-cases (eg, if there's an account
* issue, etc
* avatarDefault: boolean - whether `avatar` is specific to the user
* or the default avatar.
* }
*
* or null if no user is signed in. This function never fails except
* in pathological cases (eg, file-system errors, etc)
*/
getSignedInUser() {
// Note we don't return the session token, but use it to see if we
// should fetch the profile.
const ACCT_DATA_FIELDS = ["email", "uid", "verified", "sessionToken"];
const PROFILE_FIELDS = ["displayName", "avatar", "avatarDefault"];
return this._withCurrentAccountState(async currentState => {
const data = await currentState.getUserAccountData(ACCT_DATA_FIELDS);
if (!data) {
return null;
}
if (!FXA_ENABLED) {
await this.signOut();
return null;
}
if (!this._internal.isUserEmailVerified(data)) {
// If the email is not verified, start polling for verification,
// but return null right away. We don't want to return a promise
// that might not be fulfilled for a long time.
this._internal.startVerifiedCheck(data);
}
let profileData = null;
if (data.sessionToken) {
delete data.sessionToken;
try {
profileData = await this._internal.profile.getProfile();
} catch (error) {
log.error("Could not retrieve profile data", error);
}
}
for (let field of PROFILE_FIELDS) {
data[field] = profileData ? profileData[field] : null;
}
// and email is a special case - if we have profile data we prefer the
// email from that, as the email we stored for the account itself might
// not have been updated if the email changed since the user signed in.
if (profileData && profileData.email) {
data.email = profileData.email;
}
return data;
});
}
/**
* Checks the status of the account. Resolves with Promise<boolean>, where
* true indicates the account status is OK and false indicates there's some
* issue with the account - either that there's no user currently signed in,
* the entire account has been deleted (in which case there will be no user
* signed in after this call returns), or that the user must reauthenticate (in
* which case `this.hasLocalSession()` will return `false` after this call
* returns).
*
* Typically used when some external code which uses, for example, oauth tokens
* received a 401 error using the token, or that this external code has some
* other reason to believe the account status may be bad. Note that this will
* be called automatically in many cases - for example, if calls to fetch the
* profile, or fetch keys, etc return a 401, there's no need to call this
* function.
*
* Because this hits the server, you should only call this method when you have
* good reason to believe the session very recently became invalid (eg, because
* you saw an auth related exception from a remote service.)
*/
checkAccountStatus() {
// Note that we don't use _withCurrentAccountState here because that will
// cause an exception to be thrown if we end up signing out due to the
// account not existing, which isn't what we want here.
let state = this._internal.currentAccountState;
return this._internal.checkAccountStatus(state);
}
/**
* Checks if we have a valid local session state for the current account.
*
* @return Promise
* Resolves with a boolean, with true indicating that we appear to
* have a valid local session, or false if we need to reauthenticate
* with the content server to obtain one.
* Note that this only checks local state, although typically that's
* OK, because we drop the local session information whenever we detect
* we are in this state. However, see checkAccountStatus() for a way to
* check the account and session status with the server, which can be
* considered the canonical, albiet expensive, way to determine the
* status of the account.
*/
hasLocalSession() {
return this._withCurrentAccountState(async state => {
let data = await state.getUserAccountData(["sessionToken"]);
return !!(data && data.sessionToken);
});
}
/**
* Send a message to a set of devices in the same account
*
* @param deviceIds: (null/string/array) The device IDs to send the message to.
* If null, will be sent to all devices.
*
* @param excludedIds: (null/string/array) If deviceIds is null, this may
* list device IDs which should not receive the message.
*
* @param payload: (object) The payload, which will be JSON.stringified.
*
* @param TTL: How long the message should be retained before it is discarded.
*/
// XXX - used only by sync to tell other devices that the clients collection
// has changed so they should sync asap. The API here is somewhat vague (ie,
// "an object"), but to be useful across devices, the payload really needs
// formalizing. We should try and do something better here.
notifyDevices(deviceIds, excludedIds, payload, TTL) {
return this._internal.notifyDevices(deviceIds, excludedIds, payload, TTL);
}
/**
* Resend the verification email for the currently signed-in user.
*
*/
resendVerificationEmail() {
return this._withSessionToken((token, currentState) => {
this._internal.startPollEmailStatus(currentState, token, "start");
return this._internal.fxAccountsClient.resendVerificationEmail(token);
}, false);
}
async signOut(localOnly) {
// Note that we do not use _withCurrentAccountState here, otherwise we
// end up with an exception due to the user signing out before the call is
// complete - but that's the entire point of this method :)
return this._internal.signOut(localOnly);
}
// XXX - we should consider killing this - the only reason it is public is
// so that sync can change it when it notices the device name being changed,
// and that could probably be replaced with a pref observer.
updateDeviceRegistration() {
return this._withCurrentAccountState(_ => {
return this._internal.updateDeviceRegistration();
});
}
// we should try and kill this too.
whenVerified(data) {
return this._withCurrentAccountState(_ => {
return this._internal.whenVerified(data);
});
}
/**
* Generate a log file for the FxA action that just completed
* and refresh the input & output streams.
*/
async flushLogFile() {
const logType = await logManager.resetFileLog();
if (logType == logManager.ERROR_LOG_WRITTEN) {
Cu.reportError(
"FxA encountered an error - see about:sync-log for the log file."
);
}
Services.obs.notifyObservers(null, "service:log-manager:flush-log-file");
}
}
var FxAccountsInternal = function() {};
/**
* The internal API's prototype.
*/
FxAccountsInternal.prototype = {
// Make a local copy of this constant so we can mock it in testing
POLL_SESSION,
// The timeout (in ms) we use to poll for a verified mail for the first
// VERIFICATION_POLL_START_SLOWDOWN_THRESHOLD minutes if the user has
// logged-in in this session.
VERIFICATION_POLL_TIMEOUT_INITIAL: 60000, // 1 minute.
// All the other cases (> 5 min, on restart etc).
VERIFICATION_POLL_TIMEOUT_SUBSEQUENT: 5 * 60000, // 5 minutes.
// After X minutes, the polling will slow down to _SUBSEQUENT if we have
// logged-in in this session.
VERIFICATION_POLL_START_SLOWDOWN_THRESHOLD: 5,
_fxAccountsClient: null,
// All significant initialization should be done in this initialize() method
// to help with our mocking story.
initialize() {
XPCOMUtils.defineLazyGetter(this, "fxaPushService", function() {
return Cc["@mozilla.org/fxaccounts/push;1"].getService(
Ci.nsISupports
).wrappedJSObject;
});
this.keys = new FxAccountsKeys(this);
if (!this.observerPreloads) {
// A registry of promise-returning functions that `notifyObservers` should
// call before sending notifications. Primarily used so parts of Firefox
// which have yet to load for performance reasons can be force-loaded, and
// thus not miss notifications.
this.observerPreloads = [
// Sync
() => {
let scope = {};
ChromeUtils.import("resource://services-sync/main.js", scope);
return scope.Weave.Service.promiseInitialized;
},
];
}
this.currentTimer = null;
// This object holds details about, and storage for, the current user. It
// is replaced when a different user signs in. Instead of using it directly,
// you should try and use `withCurrentAccountState`.
this.currentAccountState = this.newAccountState();
},
async withCurrentAccountState(func) {
const state = this.currentAccountState;
let result;
try {
result = await func(state);
} catch (ex) {
return state.reject(ex);
}
return state.resolve(result);
},
async withVerifiedAccountState(func) {
return this.withCurrentAccountState(async state => {
let data = await state.getUserAccountData();
if (!data) {
// No signed-in user
throw this._error(ERROR_NO_ACCOUNT);
}
if (!this.isUserEmailVerified(data)) {
// Signed-in user has not verified email
throw this._error(ERROR_UNVERIFIED_ACCOUNT);
}
return func(state);
});
},
async withSessionToken(func, mustBeVerified = true) {
const state = this.currentAccountState;
let data = await state.getUserAccountData();
if (!data) {
// No signed-in user
throw this._error(ERROR_NO_ACCOUNT);
}
if (mustBeVerified && !this.isUserEmailVerified(data)) {
// Signed-in user has not verified email
throw this._error(ERROR_UNVERIFIED_ACCOUNT);
}
if (!data.sessionToken) {
throw this._error(ERROR_AUTH_ERROR, "no session token");
}
try {
// Anyone who needs the session token is going to send it to the server,
// so there's a chance we'll see an auth related error - so handle that
// here rather than requiring each caller to remember to.
let result = await func(data.sessionToken, state);
return state.resolve(result);
} catch (err) {
return this._handleTokenError(err);
}
},
get fxAccountsClient() {
if (!this._fxAccountsClient) {
this._fxAccountsClient = new FxAccountsClient();
}
return this._fxAccountsClient;
},
get fxAccountsOAuthGrantClient() {
if (!this._fxAccountsOAuthGrantClient) {
this._fxAccountsOAuthGrantClient = new FxAccountsOAuthGrantClient({
client_id: FX_OAUTH_CLIENT_ID,
});
}
return this._fxAccountsOAuthGrantClient;
},
// The profile object used to fetch the actual user profile.
_profile: null,
get profile() {
if (!this._profile) {
let profileServerUrl = Services.urlFormatter.formatURLPref(
"identity.fxaccounts.remote.profile.uri"
);
this._profile = new FxAccountsProfile({
fxa: this,
profileServerUrl,
});
}
return this._profile;
},
_commands: null,
get commands() {
if (!this._commands) {
this._commands = new FxAccountsCommands(this);
}
return this._commands;
},
_device: null,
get device() {
if (!this._device) {
this._device = new FxAccountsDevice(this);
}
return this._device;
},
_telemetry: null,
get telemetry() {
if (!this._telemetry) {
this._telemetry = new FxAccountsTelemetry(this);
}
return this._telemetry;
},
// A hook-point for tests who may want a mocked AccountState or mocked storage.
newAccountState(credentials) {
let storage = new FxAccountsStorageManager();
storage.initialize(credentials);
return new AccountState(storage);
},
notifyDevices(deviceIds, excludedIds, payload, TTL) {
if (typeof deviceIds == "string") {
deviceIds = [deviceIds];
}
return this.withSessionToken(sessionToken => {
return this.fxAccountsClient.notifyDevices(
sessionToken,
deviceIds,
excludedIds,
payload,
TTL
);
});
},
/**
* Return the current time in milliseconds as an integer. Allows tests to
* manipulate the date to simulate certificate expiration.
*/
now() {
return this.fxAccountsClient.now();
},
/**
* Return clock offset in milliseconds, as reported by the fxAccountsClient.
* This can be overridden for testing.
*
* The offset is the number of milliseconds that must be added to the client
* clock to make it equal to the server clock. For example, if the client is
* five minutes ahead of the server, the localtimeOffsetMsec will be -300000.
*/
get localtimeOffsetMsec() {
return this.fxAccountsClient.localtimeOffsetMsec;
},
/**
* Ask the server whether the user's email has been verified
*/
checkEmailStatus: function checkEmailStatus(sessionToken, options = {}) {
if (!sessionToken) {
return Promise.reject(
new Error("checkEmailStatus called without a session token")
);
}
return this.fxAccountsClient
.recoveryEmailStatus(sessionToken, options)
.catch(error => this._handleTokenError(error));
},
// set() makes sure that polling is happening, if necessary.
// get() does not wait for verification, and returns an object even if
// unverified. The caller of get() must check .verified .
// The "fxaccounts:onverified" event will fire only when the verified
// state goes from false to true, so callers must register their observer
// and then call get(). In particular, it will not fire when the account
// was found to be verified in a previous boot: if our stored state says
// the account is verified, the event will never fire. So callers must do:
// register notification observer (go)
// userdata = get()
// if (userdata.verified()) {go()}
/**
* Set the current user signed in to Firefox Accounts.
*
* @param credentials
* The credentials object obtained by logging in or creating
* an account on the FxA server:
* {
* authAt: The time (seconds since epoch) that this record was
* authenticated
* email: The users email address
* keyFetchToken: a keyFetchToken which has not yet been used
* sessionToken: Session for the FxA server
* uid: The user's unique id
* unwrapBKey: used to unwrap kB, derived locally from the
* password (not revealed to the FxA server)
* verified: true/false
* }
* @return Promise
* The promise resolves to null when the data is saved
* successfully and is rejected on error.
*/
async setSignedInUser(credentials) {
if (!FXA_ENABLED) {
throw new Error("Cannot call setSignedInUser when FxA is disabled.");
}
Preferences.resetBranch(PREF_ACCOUNT_ROOT);
log.debug("setSignedInUser - aborting any existing flows");
const signedInUser = await this.currentAccountState.getUserAccountData();
if (signedInUser) {
await this._signOutServer(
signedInUser.sessionToken,
signedInUser.oauthTokens
);
}
await this.abortExistingFlow();
let currentAccountState = (this.currentAccountState = this.newAccountState(
Cu.cloneInto(credentials, {}) // Pass a clone of the credentials object.
));
// This promise waits for storage, but not for verification.
// We're telling the caller that this is durable now (although is that
// really something we should commit to? Why not let the write happen in
// the background? Already does for updateAccountData ;)
await currentAccountState.promiseInitialized;
// Starting point for polling if new user
if (!this.isUserEmailVerified(credentials)) {
this.startVerifiedCheck(credentials);
}
await this.notifyObservers(ONLOGIN_NOTIFICATION);
await this.updateDeviceRegistration();
return currentAccountState.resolve();
},
/**
* Update account data for the currently signed in user.
*
* @param credentials
* The credentials object containing the fields to be updated.
* This object must contain the |uid| field and it must
* match the currently signed in user.
*/
updateUserAccountData(credentials) {
log.debug(
"updateUserAccountData called with fields",
Object.keys(credentials)
);
if (logPII) {
log.debug("updateUserAccountData called with data", credentials);
}
let currentAccountState = this.currentAccountState;
return currentAccountState.promiseInitialized
.then(() => {
return currentAccountState.getUserAccountData(["uid"]);
})
.then(existing => {
if (existing.uid != credentials.uid) {
throw new Error(
"The specified credentials aren't for the current user"
);
}
// We need to nuke uid as storage will complain if we try and
// update it (even when the value is the same)
credentials = Cu.cloneInto(credentials, {}); // clone it first
delete credentials.uid;
return currentAccountState.updateUserAccountData(credentials);
});
},
/**
* returns a promise that fires with the assertion. Throws if there is no
* verified signed-in user or no local sessionToken.
*/
getAssertion: function getAssertion(audience) {
return this._getAssertion(audience);
},
// getAssertion() is "public" so screws with our mock story. This
// implementation method *can* be (and is) mocked by tests.
_getAssertion(audience) {
log.debug("enter getAssertion()");
return this.withSessionToken(async (_, currentState) => {
let { keyPair, certificate } = await this.getKeypairAndCertificate(
currentState
);
return this.getAssertionFromCert(
await currentState.getUserAccountData(),
keyPair,
certificate,
audience
);
});
},
/*
* Reset state such that any previous flow is canceled.
*/
abortExistingFlow() {
if (this.currentTimer) {
log.debug("Polling aborted; Another user signing in");
clearTimeout(this.currentTimer);
this.currentTimer = 0;
}
if (this._profile) {
this._profile.tearDown();
this._profile = null;
}
if (this._commands) {
this._commands = null;
}
if (this._device) {
this._device.reset();
}
// We "abort" the accountState and assume our caller is about to throw it
// away and replace it with a new one.
return this.currentAccountState.abort();
},
async checkVerificationStatus() {
log.trace("checkVerificationStatus");
let state = this.currentAccountState;
let data = await state.getUserAccountData();
if (!data) {
log.trace("checkVerificationStatus - no user data");
return null;
}
// Always check the verification status, even if the local state indicates
// we're already verified. If the user changed their password, the check
// will fail, and we'll enter the reauth state.
log.trace("checkVerificationStatus - forcing verification status check");
return this.startPollEmailStatus(state, data.sessionToken, "push");
},
_destroyOAuthToken(tokenData) {
return this.fxAccountsClient.oauthDestroy(
FX_OAUTH_CLIENT_ID,
tokenData.token
);
},
_destroyAllOAuthTokens(tokenInfos) {
if (!tokenInfos) {
return Promise.resolve();
}
// let's just destroy them all in parallel...
let promises = [];
for (let tokenInfo of Object.values(tokenInfos)) {
promises.push(this._destroyOAuthToken(tokenInfo));
}
return Promise.all(promises);
},
async signOut(localOnly) {
let sessionToken;
let tokensToRevoke;
const data = await this.currentAccountState.getUserAccountData();
// Save the sessionToken, tokens before resetting them in _signOutLocal().
if (data) {
sessionToken = data.sessionToken;
tokensToRevoke = data.oauthTokens;
}
await this._signOutLocal();
if (!localOnly) {
// Do this in the background so *any* slow request won't
// block the local sign out.
Services.tm.dispatchToMainThread(async () => {
await this._signOutServer(sessionToken, tokensToRevoke);
FxAccountsConfig.resetConfigURLs();
this.notifyObservers("testhelper-fxa-signout-complete");
});
} else {
// We want to do this either way -- but if we're signing out remotely we
// need to wait until we destroy the oauth tokens if we want that to succeed.
FxAccountsConfig.resetConfigURLs();
}
return this.notifyObservers(ONLOGOUT_NOTIFICATION);
},
async _signOutLocal() {
Preferences.resetBranch(PREF_ACCOUNT_ROOT);
await this.currentAccountState.signOut();
// this "aborts" this.currentAccountState but doesn't make a new one.
await this.abortExistingFlow();
this.currentAccountState = this.newAccountState();
return this.currentAccountState.promiseInitialized;
},
async _signOutServer(sessionToken, tokensToRevoke) {
log.debug("Unsubscribing from FxA push.");
try {
await this.fxaPushService.unsubscribe();
} catch (err) {
log.error("Could not unsubscribe from push.", err);
}
if (sessionToken) {
log.debug("Destroying session and device.");
try {
await this.fxAccountsClient.signOut(sessionToken, { service: "sync" });
} catch (err) {
log.error("Error during remote sign out of Firefox Accounts", err);
}
} else {
log.warn("Missing session token; skipping remote sign out");
}
log.debug("Destroying all OAuth tokens.");
try {
await this._destroyAllOAuthTokens(tokensToRevoke);
} catch (err) {
log.error("Error during destruction of oauth tokens during signout", err);
}
},
async getAssertionFromCert(data, keyPair, cert, audience) {
log.debug("getAssertionFromCert");
let options = {
duration: ASSERTION_LIFETIME,
localtimeOffsetMsec: this.localtimeOffsetMsec,
now: this.now(),
};
let currentState = this.currentAccountState;
// "audience" should look like "http://123done.org".
// The generated assertion will expire in two minutes.
let assertion = await new Promise((resolve, reject) => {
jwcrypto.generateAssertion(
cert,
keyPair,
audience,
options,
(err, signed) => {
if (err) {
log.error("getAssertionFromCert: " + err);
reject(err);
} else {
log.debug("getAssertionFromCert returning signed: " + !!signed);
if (logPII) {
log.debug("getAssertionFromCert returning signed: " + signed);
}
resolve(signed);
}
}
);
});
return currentState.resolve(assertion);
},
getCertificateSigned(sessionToken, serializedPublicKey, lifetime) {
log.debug(
"getCertificateSigned: " + !!sessionToken + " " + !!serializedPublicKey
);
if (logPII) {
log.debug(
"getCertificateSigned: " + sessionToken + " " + serializedPublicKey
);
}
return this.fxAccountsClient.signCertificate(
sessionToken,
JSON.parse(serializedPublicKey),
lifetime
);
},
/**
* returns a promise that fires with {keyPair, certificate}.
*/
async getKeypairAndCertificate(currentState) {
// If the debugging pref to ignore cached authentication credentials is set for Sync,
// then don't use any cached key pair/certificate, i.e., generate a new
// one and get it signed.
// The purpose of this pref is to expedite any auth errors as the result of a
// expired or revoked FxA session token, e.g., from resetting or changing the FxA
// password.
let ignoreCachedAuthCredentials = Services.prefs.getBoolPref(
"services.sync.debug.ignoreCachedAuthCredentials",
false
);
let mustBeValidUntil = this.now() + ASSERTION_USE_PERIOD;
let accountData = await currentState.getUserAccountData([
"cert",
"keyPair",
"sessionToken",
]);
let keyPairValid =
!ignoreCachedAuthCredentials &&
accountData.keyPair &&
accountData.keyPair.validUntil > mustBeValidUntil;
let certValid =
!ignoreCachedAuthCredentials &&
accountData.cert &&
accountData.cert.validUntil > mustBeValidUntil;
// TODO: get the lifetime from the cert's .exp field
if (keyPairValid && certValid) {
log.debug(
"getKeypairAndCertificate: already have keyPair and certificate"
);
return {
keyPair: accountData.keyPair.rawKeyPair,
certificate: accountData.cert.rawCert,
};
}
// We are definately going to generate a new cert, either because it has
// already expired, or the keyPair has - and a new keyPair means we must
// generate a new cert.
// A keyPair has a longer lifetime than a cert, so it's possible we will
// have a valid keypair but an expired cert, which means we can skip
// keypair generation.
// Either way, the cert will require hitting the network, so bail now if
// we know that's going to fail.
if (Services.io.offline) {
throw new Error(ERROR_OFFLINE);
}
let keyPair;
if (keyPairValid) {
keyPair = accountData.keyPair;
} else {
let keyWillBeValidUntil = this.now() + KEY_LIFETIME;
keyPair = await new Promise((resolve, reject) => {
jwcrypto.generateKeyPair("DS160", (err, kp) => {
if (err) {
reject(err);
return;
}
log.debug("got keyPair");
resolve({
rawKeyPair: kp,
validUntil: keyWillBeValidUntil,
});
});
});
}
// and generate the cert.
let certWillBeValidUntil = this.now() + CERT_LIFETIME;
let certificate = await this.getCertificateSigned(
accountData.sessionToken,
keyPair.rawKeyPair.serializedPublicKey,
CERT_LIFETIME
);
log.debug("getCertificate got a new one: " + !!certificate);
if (certificate) {
// Cache both keypair and cert.
let toUpdate = {
keyPair,
cert: {
rawCert: certificate,
validUntil: certWillBeValidUntil,
},
};
await currentState.updateUserAccountData(toUpdate);
}
return {
keyPair: keyPair.rawKeyPair,
certificate,
};
},
getUserAccountData(fieldNames = null) {
return this.currentAccountState.getUserAccountData(fieldNames);
},
isUserEmailVerified: function isUserEmailVerified(data) {
return !!(data && data.verified);
},
/**
* Setup for and if necessary do email verification polling.
*/
loadAndPoll() {
let currentState = this.currentAccountState;
return currentState.getUserAccountData().then(data => {
if (data) {
if (!this.isUserEmailVerified(data)) {
this.startPollEmailStatus(
currentState,
data.sessionToken,
"browser-startup"
);
}
}
return data;
});
},
startVerifiedCheck(data) {
log.debug("startVerifiedCheck", data && data.verified);
if (logPII) {
log.debug("startVerifiedCheck with user data", data);
}
// Get us to the verified state. This returns a promise that will fire when
// verification is complete.
// The callers of startVerifiedCheck never consume a returned promise (ie,
// this is simply kicking off a background fetch) so we must add a rejection
// handler to avoid runtime warnings about the rejection not being handled.
this.whenVerified(data).catch(err =>
log.info("startVerifiedCheck promise was rejected: " + err)
);
},
whenVerified(data) {
let currentState = this.currentAccountState;
if (data.verified) {
log.debug("already verified");
return currentState.resolve(data);
}
if (!currentState.whenVerifiedDeferred) {
log.debug("whenVerified promise starts polling for verified email");
this.startPollEmailStatus(currentState, data.sessionToken, "start");
}
return currentState.whenVerifiedDeferred.promise.then(result =>
currentState.resolve(result)
);
},
async notifyObservers(topic, data) {
for (let f of this.observerPreloads) {
try {
await f();
} catch (O_o) {}
}
log.debug("Notifying observers of " + topic);
Services.obs.notifyObservers(null, topic, data);
},
startPollEmailStatus(currentState, sessionToken, why) {
log.debug("entering startPollEmailStatus: " + why);
// If we were already polling, stop and start again. This could happen
// if the user requested the verification email to be resent while we
// were already polling for receipt of an earlier email.
if (this.currentTimer) {
log.debug(
"startPollEmailStatus starting while existing timer is running"
);
clearTimeout(this.currentTimer);
this.currentTimer = null;
}
this.pollStartDate = Date.now();
if (!currentState.whenVerifiedDeferred) {
currentState.whenVerifiedDeferred = PromiseUtils.defer();
// This deferred might not end up with any handlers (eg, if sync
// is yet to start up.) This might cause "A promise chain failed to
// handle a rejection" messages, so add an error handler directly
// on the promise to log the error.
currentState.whenVerifiedDeferred.promise.then(
() => {
log.info("the user became verified");
// We are now ready for business. This should only be invoked once
// per setSignedInUser(), regardless of whether we've rebooted since
// setSignedInUser() was called.
this.notifyObservers(ONVERIFIED_NOTIFICATION);
},
err => {
log.info("the wait for user verification was stopped: " + err);
}
);
}
return this.pollEmailStatus(currentState, sessionToken, why);
},
// We return a promise for testing only. Other callers can ignore this,
// since verification polling continues in the background.
async pollEmailStatus(currentState, sessionToken, why) {
log.debug("entering pollEmailStatus: " + why);
let nextPollMs;
try {
const response = await this.checkEmailStatus(sessionToken, {
reason: why,
});
log.debug("checkEmailStatus -> " + JSON.stringify(response));
if (response && response.verified) {
await this.onPollEmailSuccess(currentState);
return;
}
} catch (error) {
if (error && error.code && error.code == 401) {
let error = new Error("Verification status check failed");
this._rejectWhenVerified(currentState, error);
return;
}
if (error && error.retryAfter) {
// If the server told us to back off, back off the requested amount.
nextPollMs = (error.retryAfter + 3) * 1000;
log.warn(
`the server rejected our email status check and told us to try again in ${nextPollMs}ms`
);
} else {
log.error(`checkEmailStatus failed to poll`, error);
}
}
if (why == "push") {
return;
}
let pollDuration = Date.now() - this.pollStartDate;
// Polling session expired.
if (pollDuration >= this.POLL_SESSION) {
if (currentState.whenVerifiedDeferred) {
let error = new Error("User email verification timed out.");
this._rejectWhenVerified(currentState, error);
}
log.debug("polling session exceeded, giving up");
return;
}
// Poll email status again after a short delay.
if (nextPollMs === undefined) {
let currentMinute = Math.ceil(pollDuration / 60000);
nextPollMs =
why == "start" &&
currentMinute < this.VERIFICATION_POLL_START_SLOWDOWN_THRESHOLD
? this.VERIFICATION_POLL_TIMEOUT_INITIAL
: this.VERIFICATION_POLL_TIMEOUT_SUBSEQUENT;
}
this._scheduleNextPollEmailStatus(
currentState,
sessionToken,
nextPollMs,
why
);
},
// Easy-to-mock testable method
_scheduleNextPollEmailStatus(currentState, sessionToken, nextPollMs, why) {
log.debug("polling with timeout = " + nextPollMs);
this.currentTimer = setTimeout(() => {
this.pollEmailStatus(currentState, sessionToken, why);
}, nextPollMs);
},
async onPollEmailSuccess(currentState) {
try {
await currentState.updateUserAccountData({ verified: true });
const accountData = await currentState.getUserAccountData();
// Now that the user is verified, we can proceed to fetch keys
if (currentState.whenVerifiedDeferred) {
currentState.whenVerifiedDeferred.resolve(accountData);
delete currentState.whenVerifiedDeferred;
}
} catch (e) {
log.error(e);
}
},
_rejectWhenVerified(currentState, error) {
currentState.whenVerifiedDeferred.reject(error);
delete currentState.whenVerifiedDeferred;
},
/**
* Does the actual fetch of an oauth token for getOAuthToken()
* @param scopeString
* @param ttl
* @returns {Promise<string>}
* @private
*/
async _doTokenFetch(scopeString, ttl) {
// Ideally, we would auth this call directly with our `sessionToken`
// using the `_doTokenFetchWithSessionToken` method rather than going
// via a BrowserID assertion. Before we can do so we need to resolve some
// data-volume processing issues in the server-side FxA metrics pipeline.
let token;
let oAuthURL = this.fxAccountsOAuthGrantClient.serverURL.href;
let assertion = await this.getAssertion(oAuthURL);
try {
let result = await this.fxAccountsOAuthGrantClient.getTokenFromAssertion(
assertion,
scopeString,
ttl
);
token = result.access_token;
} catch (err) {
// If we get a 401 fetching the token it may be that our certificate
// needs to be regenerated.
if (err.code !== 401 || err.errno !== ERRNO_INVALID_FXA_ASSERTION) {
throw err;
}
log.warn(
"OAuth server returned 401, refreshing certificate and retrying token fetch"
);
await this.invalidateCertificate();
assertion = await this.getAssertion(oAuthURL);
let result = await this.fxAccountsOAuthGrantClient.getTokenFromAssertion(
assertion,
scopeString,
ttl
);
token = result.access_token;
}
return token;
},
/**
* Does the actual fetch of an oauth token for getOAuthToken()
* using the account session token.
* @param {String} scopeString
* @param {Number} ttl
* @returns {Promise<string>}
* @private
*/
async _doTokenFetchWithSessionToken(scopeString, ttl) {
return this.withSessionToken(async sessionToken => {
const result = await this.fxAccountsClient.accessTokenWithSessionToken(
sessionToken,
FX_OAUTH_CLIENT_ID,
scopeString,
ttl
);
return result.access_token;
});
},
getOAuthToken(options = {}) {
log.debug("getOAuthToken enter");
let scope = options.scope;
if (typeof scope === "string") {
scope = [scope];
}
if (!scope || !scope.length) {
return Promise.reject(
this._error(
ERROR_INVALID_PARAMETER,
"Missing or invalid 'scope' option"
)
);
}
return this.withVerifiedAccountState(async currentState => {
// Early exit for a cached token.
let cached = currentState.getCachedToken(scope);
if (cached) {
log.debug("getOAuthToken returning a cached token");
return cached.token;
}
// Build the string we use in our "inflight" map and that we send to the
// server. Because it's used as a key in the map we sort the scopes.
let scopeString = scope.sort().join(" ");
// We keep a map of in-flight requests to avoid multiple promise-based
// consumers concurrently requesting the same token.
let maybeInFlight = currentState.inFlightTokenRequests.get(scopeString);
if (maybeInFlight) {
log.debug("getOAuthToken has an in-flight request for this scope");
return maybeInFlight;
}
let fetchFunction = this._doTokenFetch.bind(this);
if (USE_SESSION_TOKENS_FOR_OAUTH) {
fetchFunction = this._doTokenFetchWithSessionToken.bind(this);
}
// We need to start a new fetch and stick the promise in our in-flight map
// and remove it when it resolves.
let promise = fetchFunction(scopeString, options.ttl)
.then(token => {
// As a sanity check, ensure something else hasn't raced getting a token
// of the same scope. If something has we just make noise rather than
// taking any concrete action because it should never actually happen.
if (currentState.getCachedToken(scope)) {
log.error(`detected a race for oauth token with scope ${scope}`);
}
// If we got one, cache it.
if (token) {
let entry = { token };
currentState.setCachedToken(scope, entry);
}
return token;
})
.finally(() => {
// Remove ourself from the in-flight map. There's no need to check the
// result of .delete() to handle a signout race, because setCachedToken
// above will fail in that case and cause the entire call to fail.
currentState.inFlightTokenRequests.delete(scopeString);
});
currentState.inFlightTokenRequests.set(scopeString, promise);
return promise;
});
},
/**
* Remove an OAuth token from the token cache
* and makes a network request to FxA server to destroy the token.
*
* @param options
* {
* token: (string) A previously fetched token.
* }
* @return Promise.<undefined> This function will always resolve, even if
* an unknown token is passed.
*/
removeCachedOAuthToken(options) {
if (!options.token || typeof options.token !== "string") {
throw this._error(
ERROR_INVALID_PARAMETER,
"Missing or invalid 'token' option"
);
}
return this.withCurrentAccountState(currentState => {
let existing = currentState.removeCachedToken(options.token);
if (existing) {
// background destroy.
this._destroyOAuthToken(existing).catch(err => {
log.warn("FxA failed to revoke a cached token", err);
});
}
});
},
/**
* Invalidate the FxA certificate, so that it will be refreshed from the server
* the next time it is needed.
*/
invalidateCertificate() {
return this.withCurrentAccountState(async currentState => {
await currentState.updateUserAccountData({ cert: null });
});
},
/**
*
* @param {String} clientId
* @param {String} scope Space separated requested scopes
* @param {Object} jwk
*/
async createKeysJWE(clientId, scope, jwk) {
let scopedKeys = await this.keys.getScopedKeys(scope, clientId);
scopedKeys = new TextEncoder().encode(JSON.stringify(scopedKeys));
return jwcrypto.generateJWE(jwk, scopedKeys);
},
async _getVerifiedAccountOrReject() {
let data = await this.currentAccountState.getUserAccountData();
if (!data) {
// No signed-in user
throw this._error(ERROR_NO_ACCOUNT);
}
if (!this.isUserEmailVerified(data)) {
// Signed-in user has not verified email
throw this._error(ERROR_UNVERIFIED_ACCOUNT);
}
return data;
},
// _handle* methods used by push, used when the account/device status is
// changed on a different device.
async _handleAccountDestroyed(uid) {
let state = this.currentAccountState;
const accountData = await state.getUserAccountData();
const localUid = accountData ? accountData.uid : null;
if (!localUid) {
log.info(
`Account destroyed push notification received, but we're already logged-out`
);
return null;
}
if (uid == localUid) {
const data = JSON.stringify({ isLocalDevice: true });
await this.notifyObservers(ON_DEVICE_DISCONNECTED_NOTIFICATION, data);
return this.signOut(true);
}
log.info(
`The destroyed account uid doesn't match with the local uid. ` +
`Local: ${localUid}, account uid destroyed: ${uid}`
);
return null;
},
async _handleDeviceDisconnection(deviceId) {
let state = this.currentAccountState;
const accountData = await state.getUserAccountData();
if (!accountData || !accountData.device) {
// Nothing we can do here.
return;
}
const localDeviceId = accountData.device.id;
const isLocalDevice = deviceId == localDeviceId;
if (isLocalDevice) {
this.signOut(true);
}
const data = JSON.stringify({ isLocalDevice });
await this.notifyObservers(ON_DEVICE_DISCONNECTED_NOTIFICATION, data);
},
async _handleEmailUpdated(newEmail) {
Services.prefs.setStringPref(
PREF_LAST_FXA_USER,
CryptoUtils.sha256Base64(newEmail)
);
await this.currentAccountState.updateUserAccountData({ email: newEmail });
},
/*
* Coerce an error into one of the general error cases:
* NETWORK_ERROR
* AUTH_ERROR
* UNKNOWN_ERROR
*
* These errors will pass through:
* INVALID_PARAMETER
* NO_ACCOUNT
* UNVERIFIED_ACCOUNT
*/
_errorToErrorClass(aError) {
if (aError.errno) {
let error = SERVER_ERRNO_TO_ERROR[aError.errno];
return this._error(
ERROR_TO_GENERAL_ERROR_CLASS[error] || ERROR_UNKNOWN,
aError
);
} else if (
aError.message &&
(aError.message === "INVALID_PARAMETER" ||
aError.message === "NO_ACCOUNT" ||
aError.message === "UNVERIFIED_ACCOUNT" ||
aError.message === "AUTH_ERROR")
) {
return aError;
}
return this._error(ERROR_UNKNOWN, aError);
},
_error(aError, aDetails) {
log.error("FxA rejecting with error ${aError}, details: ${aDetails}", {
aError,
aDetails,
});
let reason = new Error(aError);
if (aDetails) {
reason.details = aDetails;
}
return reason;
},
// Attempt to update the auth server with whatever device details are stored
// in the account data. Returns a promise that always resolves, never rejects.
// If the promise resolves to a value, that value is the device id.
updateDeviceRegistration() {
return this.device.updateDeviceRegistration();
},
/**
* Delete all the persisted credentials we store for FxA. After calling
* this, the user will be forced to re-authenticate to continue.
*
* @return Promise resolves when the user data has been persisted
*/
dropCredentials(state) {
// Delete all fields except those required for the user to
// reauthenticate.
let updateData = {};
let clearField = field => {
if (!FXA_PWDMGR_REAUTH_WHITELIST.has(field)) {
updateData[field] = null;
}
};
FXA_PWDMGR_PLAINTEXT_FIELDS.forEach(clearField);
FXA_PWDMGR_SECURE_FIELDS.forEach(clearField);
FXA_PWDMGR_MEMORY_FIELDS.forEach(clearField);
return state.updateUserAccountData(updateData);
},
async checkAccountStatus(state) {
log.info("checking account status...");
let data = await state.getUserAccountData(["uid", "sessionToken"]);
if (!data) {
log.info("account status: no user");
return false;
}
// If we have a session token, then check if that remains valid - if this
// works we know the account must also be OK.
if (data.sessionToken) {
if (await this.fxAccountsClient.sessionStatus(data.sessionToken)) {
log.info("account status: ok");
return true;
}
}
let exists = await this.fxAccountsClient.accountStatus(data.uid);
if (!exists) {
// Delete all local account data. Since the account no longer
// exists, we can skip the remote calls.
log.info("account status: deleted");
await this._handleAccountDestroyed(data.uid);
} else {
// Note that we may already have been in a "needs reauth" state (ie, if
// this function was called when we already had no session token), but
// that's OK - re-notifying etc should cause no harm.
log.info("account status: needs reauthentication");
await this.dropCredentials(this.currentAccountState);
// Notify the account state has changed so the UI updates.
await this.notifyObservers(ON_ACCOUNT_STATE_CHANGE_NOTIFICATION);
}
return false;
},
async _handleTokenError(err) {
if (!err || err.code != 401 || err.errno != ERRNO_INVALID_AUTH_TOKEN) {
throw err;
}
log.warn("handling invalid token error", err);
// Note that we don't use `withCurrentAccountState` here as that will cause
// an error to be thrown if we sign out due to the account not existing.
let state = this.currentAccountState;
let ok = await this.checkAccountStatus(state);
if (ok) {
log.warn("invalid token error, but account state appears ok?");
}
// always re-throw the error.
throw err;
},
};
// A getter for the instance to export
XPCOMUtils.defineLazyGetter(this, "fxAccounts", function() {
let a = new FxAccounts();
// XXX Bug 947061 - We need a strategy for resuming email verification after
// browser restart
a._internal.loadAndPoll();
return a;
});
var EXPORTED_SYMBOLS = ["fxAccounts", "FxAccounts"];
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