/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ "use strict"; this.EXPORTED_SYMBOLS = ["fxAccounts", "FxAccounts"]; const {classes: Cc, interfaces: Ci, utils: Cu} = Components; Cu.import("resource://gre/modules/Log.jsm"); Cu.import("resource://gre/modules/Promise.jsm"); Cu.import("resource://services-common/utils.js"); Cu.import("resource://services-common/rest.js"); Cu.import("resource://services-crypto/utils.js"); Cu.import("resource://gre/modules/Services.jsm"); Cu.import("resource://gre/modules/XPCOMUtils.jsm"); Cu.import("resource://gre/modules/Timer.jsm"); Cu.import("resource://gre/modules/Task.jsm"); Cu.import("resource://gre/modules/FxAccountsStorage.jsm"); Cu.import("resource://gre/modules/FxAccountsCommon.js"); XPCOMUtils.defineLazyModuleGetter(this, "FxAccountsClient", "resource://gre/modules/FxAccountsClient.jsm"); XPCOMUtils.defineLazyModuleGetter(this, "FxAccountsConfig", "resource://gre/modules/FxAccountsConfig.jsm"); XPCOMUtils.defineLazyModuleGetter(this, "jwcrypto", "resource://gre/modules/identity/jwcrypto.jsm"); XPCOMUtils.defineLazyModuleGetter(this, "FxAccountsOAuthGrantClient", "resource://gre/modules/FxAccountsOAuthGrantClient.jsm"); XPCOMUtils.defineLazyModuleGetter(this, "FxAccountsProfile", "resource://gre/modules/FxAccountsProfile.jsm"); XPCOMUtils.defineLazyModuleGetter(this, "Utils", "resource://services-sync/util.js"); // All properties exposed by the public FxAccounts API. var publicProperties = [ "accountStatus", "checkVerificationStatus", "getAccountsClient", "getAssertion", "getDeviceId", "getKeys", "getOAuthToken", "getSignedInUser", "getSignedInUserProfile", "handleDeviceDisconnection", "invalidateCertificate", "loadAndPoll", "localtimeOffsetMsec", "notifyDevices", "now", "promiseAccountsChangeProfileURI", "promiseAccountsForceSigninURI", "promiseAccountsManageURI", "promiseAccountsSignUpURI", "promiseAccountsSignInURI", "removeCachedOAuthToken", "requiresHttps", "resendVerificationEmail", "resetCredentials", "sessionStatus", "setSignedInUser", "signOut", "updateDeviceRegistration", "updateUserAccountData", "whenVerified", ]; // An AccountState object holds all state related to one specific account. // 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.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.cert = null; this.keyPair = null; this.oauthTokens = null; // Avoid finalizing the storageManager multiple times (ie, .signOut() // followed by .abort()) if (!this.storageManager) { return Promise.resolve(); } let storageManager = this.storageManager; this.storageManager = null; return storageManager.finalize(); }, // Clobber all cached data and write that empty data to storage. signOut() { this.cert = null; this.keyPair = null; this.oauthTokens = null; let storageManager = this.storageManager; this.storageManager = null; return storageManager.deleteAccountData().then(() => { return 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: function(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: function(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 (eg, it probably specifies the server to revoke // from). 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("|"); } /** * 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 options (object) (optional) * {keys: [...]} * Lets the caller pass the names of all properties they want to be * copied. Will copy all properties of the given source object by * default. * {bind: object} * Lets the caller specify the object that will be used to .bind() * all function properties we find to. Will bind to the given target * object by default. */ function copyObjectProperties(from, to, opts = {}) { let keys = (opts && opts.keys) || Object.keys(from); let thisArg = (opts && opts.bind) || to; for (let prop of keys) { let desc = Object.getOwnPropertyDescriptor(from, prop); if (typeof(desc.value) == "function") { desc.value = desc.value.bind(thisArg); } if (desc.get) { desc.get = desc.get.bind(thisArg); } if (desc.set) { desc.set = desc.set.bind(thisArg); } Object.defineProperty(to, prop, desc); } } function urlsafeBase64Encode(key) { return ChromeUtils.base64URLEncode(new Uint8Array(key), { pad: false }); } /** * The public API's constructor. */ this.FxAccounts = function (mockInternal) { let internal = new FxAccountsInternal(); let external = {}; // Copy all public properties to the 'external' object. let prototype = FxAccountsInternal.prototype; let options = {keys: publicProperties, bind: internal}; copyObjectProperties(prototype, external, options); // Copy all of the mock's properties to the internal object. if (mockInternal && !mockInternal.onlySetInternal) { copyObjectProperties(mockInternal, internal); } if (mockInternal) { // Exposes the internal object for testing only. external.internal = internal; } if (!internal.fxaPushService) { // internal.fxaPushService option is used in testing. // Otherwise we load the service lazily. XPCOMUtils.defineLazyGetter(internal, "fxaPushService", function () { return Components.classes["@mozilla.org/fxaccounts/push;1"] .getService(Components.interfaces.nsISupports) .wrappedJSObject; }); } // wait until after the mocks are setup before initializing. internal.initialize(); return Object.freeze(external); } /** * The internal API's constructor. */ function FxAccountsInternal() { // Make a local copy of this constant so we can mock it in testing this.POLL_SESSION = POLL_SESSION; // All significant initialization should be done in the initialize() method // below as it helps with testing. } /** * The internal API's prototype. */ FxAccountsInternal.prototype = { // The timeout (in ms) we use to poll for a verified mail for the first 2 mins. VERIFICATION_POLL_TIMEOUT_INITIAL: 15000, // 15 seconds // And how often we poll after the first 2 mins. VERIFICATION_POLL_TIMEOUT_SUBSEQUENT: 30000, // 30 seconds. // The current version of the device registration, we use this to re-register // devices after we update what we send on device registration. DEVICE_REGISTRATION_VERSION: 2, _fxAccountsClient: null, // All significant initialization should be done in this initialize() method, // as it's called after this object has been mocked for tests. initialize() { this.currentTimer = null; this.currentAccountState = this.newAccountState(); }, get fxAccountsClient() { if (!this._fxAccountsClient) { this._fxAccountsClient = new FxAccountsClient(); } return this._fxAccountsClient; }, // 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: profileServerUrl, }); } return this._profile; }, // 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); }, /** * Send a message to a set of devices in the same account * * @return Promise */ notifyDevices: function(deviceIds, payload, TTL) { if (!Array.isArray(deviceIds)) { deviceIds = [deviceIds]; } return this.currentAccountState.getUserAccountData() .then(data => { if (!data) { throw this._error(ERROR_NO_ACCOUNT); } if (!data.sessionToken) { throw this._error(ERROR_AUTH_ERROR, "notifyDevices called without a session token"); } return this.fxAccountsClient.notifyDevices(data.sessionToken, deviceIds, payload, TTL); }); }, /** * Return the current time in milliseconds as an integer. Allows tests to * manipulate the date to simulate certificate expiration. */ now: function() { return this.fxAccountsClient.now(); }, getAccountsClient: function() { return this.fxAccountsClient; }, /** * 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)); }, /** * Once the user's email is verified, we can request the keys */ fetchKeys: function fetchKeys(keyFetchToken) { log.debug("fetchKeys: " + !!keyFetchToken); if (logPII) { log.debug("fetchKeys - the token is " + keyFetchToken); } return this.fxAccountsClient.accountKeys(keyFetchToken); }, // 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()} /** * Get the user currently signed in to Firefox Accounts. * * @return Promise * The promise resolves to the credentials object of the signed-in user: * { * email: The user's email address * uid: The user's unique id * sessionToken: Session for the FxA server * kA: An encryption key from the FxA server * kB: An encryption key derived from the user's FxA password * verified: email verification status * authAt: The time (seconds since epoch) that this record was * authenticated * } * or null if no user is signed in. */ getSignedInUser: function getSignedInUser() { let currentState = this.currentAccountState; return currentState.getUserAccountData().then(data => { if (!data) { return null; } if (!this.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.startVerifiedCheck(data); } return data; }).then(result => currentState.resolve(result)); }, /** * 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. */ setSignedInUser: function setSignedInUser(credentials) { log.debug("setSignedInUser - aborting any existing flows"); return this.abortExistingFlow().then(() => { 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 ;) return currentAccountState.promiseInitialized.then(() => { // Starting point for polling if new user if (!this.isUserEmailVerified(credentials)) { this.startVerifiedCheck(credentials); } return this.updateDeviceRegistration(); }).then(() => { Services.telemetry.getHistogramById("FXA_CONFIGURED").add(1); this.notifyObservers(ONLOGIN_NOTIFICATION); }).then(() => { 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 |email| and |uid| fields and they 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(["email", "uid"]); }).then(existing => { if (existing.email != credentials.email || existing.uid != credentials.uid) { throw new Error("The specified credentials aren't for the current user"); } // We need to nuke email and uid as storage will complain if we try and // update them (even when the value is the same) credentials = Cu.cloneInto(credentials, {}); // clone it first delete credentials.email; delete credentials.uid; return currentAccountState.updateUserAccountData(credentials); }); }, /** * returns a promise that fires with the assertion. If there is no verified * signed-in user, fires with null. */ 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: function _getAssertion(audience) { log.debug("enter getAssertion()"); let currentState = this.currentAccountState; return currentState.getUserAccountData().then(data => { if (!data) { // No signed-in user return null; } if (!this.isUserEmailVerified(data)) { // Signed-in user has not verified email return null; } if (!data.sessionToken) { // can't get a signed certificate without a session token. This // can happen if we request an assertion after clearing an invalid // session token from storage. throw this._error(ERROR_AUTH_ERROR, "getAssertion called without a session token"); } return this.getKeypairAndCertificate(currentState).then( ({keyPair, certificate}) => { return this.getAssertionFromCert(data, keyPair, certificate, audience); } ); }).catch(err => this._handleTokenError(err) ).then(result => currentState.resolve(result)); }, /** * Invalidate the FxA certificate, so that it will be refreshed from the server * the next time it is needed. */ invalidateCertificate() { return this.currentAccountState.updateUserAccountData({ cert: null }); }, getDeviceId() { return this.currentAccountState.getUserAccountData() .then(data => { if (data) { if (!data.deviceId || !data.deviceRegistrationVersion || data.deviceRegistrationVersion < this.DEVICE_REGISTRATION_VERSION) { // There is no device id or the device registration is outdated. // Either way, we should register the device with FxA // before returning the id to the caller. return this._registerOrUpdateDevice(data); } // Return the device id that we already registered with the server. return data.deviceId; } // Without a signed-in user, there can be no device id. return null; }); }, /** * Resend the verification email fot the currently signed-in user. * */ resendVerificationEmail: function resendVerificationEmail() { let currentState = this.currentAccountState; return this.getSignedInUser().then(data => { // If the caller is asking for verification to be re-sent, and there is // no signed-in user to begin with, this is probably best regarded as an // error. if (data) { if (!data.sessionToken) { return Promise.reject(new Error( "resendVerificationEmail called without a session token")); } this.pollEmailStatus(currentState, data.sessionToken, "start"); return this.fxAccountsClient.resendVerificationEmail( data.sessionToken).catch(err => this._handleTokenError(err)); } throw new Error("Cannot resend verification email; no signed-in user"); }); }, /* * Reset state such that any previous flow is canceled. */ abortExistingFlow: function 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; } // 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(); }, accountStatus: function accountStatus() { return this.currentAccountState.getUserAccountData().then(data => { if (!data) { return false; } return this.fxAccountsClient.accountStatus(data.uid); }); }, checkVerificationStatus: function() { log.trace('checkVerificationStatus'); let currentState = this.currentAccountState; return currentState.getUserAccountData().then(data => { 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.pollEmailStatus(currentState, data.sessionToken, "push"); }); }, _destroyOAuthToken: function(tokenData) { let client = new FxAccountsOAuthGrantClient({ serverURL: tokenData.server, client_id: FX_OAUTH_CLIENT_ID }); return client.destroyToken(tokenData.token) }, _destroyAllOAuthTokens: function(tokenInfos) { // let's just destroy them all in parallel... let promises = []; for (let [key, tokenInfo] of Object.entries(tokenInfos || {})) { promises.push(this._destroyOAuthToken(tokenInfo)); } return Promise.all(promises); }, signOut: function signOut(localOnly) { let currentState = this.currentAccountState; let sessionToken; let tokensToRevoke; let deviceId; return currentState.getUserAccountData().then(data => { // Save the session token, tokens to revoke and the // device id for use in the call to signOut below. if (data) { sessionToken = data.sessionToken; tokensToRevoke = data.oauthTokens; deviceId = data.deviceId; } return this._signOutLocal(); }).then(() => { // FxAccountsManager calls here, then does its own call // to FxAccountsClient.signOut(). if (!localOnly) { // Wrap this in a promise so *any* errors in signOut won't // block the local sign out. This is *not* returned. Promise.resolve().then(() => { // This can happen in the background and shouldn't block // the user from signing out. The server must tolerate // clients just disappearing, so this call should be best effort. if (sessionToken) { return this._signOutServer(sessionToken, deviceId); } log.warn("Missing session token; skipping remote sign out"); }).catch(err => { log.error("Error during remote sign out of Firefox Accounts", err); }).then(() => { return this._destroyAllOAuthTokens(tokensToRevoke); }).catch(err => { log.error("Error during destruction of oauth tokens during signout", err); }).then(() => { FxAccountsConfig.resetConfigURLs(); // just for testing - notifications are cheap when no observers. 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(); } }).then(() => { this.notifyObservers(ONLOGOUT_NOTIFICATION); }); }, /** * This function should be called in conjunction with a server-side * signOut via FxAccountsClient. */ _signOutLocal: function signOutLocal() { let currentAccountState = this.currentAccountState; return currentAccountState.signOut().then(() => { // this "aborts" this.currentAccountState but doesn't make a new one. return this.abortExistingFlow(); }).then(() => { this.currentAccountState = this.newAccountState(); return this.currentAccountState.promiseInitialized; }); }, _signOutServer(sessionToken, deviceId) { // For now we assume the service being logged out from is Sync, so // we must tell the server to either destroy the device or sign out // (if no device exists). We might need to revisit this when this // FxA code is used in a context that isn't Sync. const options = { service: "sync" }; if (deviceId) { log.debug("destroying device and session"); return this.fxAccountsClient.signOutAndDestroyDevice(sessionToken, deviceId, options); } log.debug("destroying session"); return this.fxAccountsClient.signOut(sessionToken, options); }, /** * Check the status of the current session using cached credentials. * * @return Promise * Resolves with a boolean indicating if the session is still valid */ sessionStatus() { return this.getSignedInUser().then(data => { if (!data.sessionToken) { return Promise.reject(new Error( "sessionStatus called without a session token")); } return this.fxAccountsClient.sessionStatus(data.sessionToken); }); }, /** * Fetch encryption keys for the signed-in-user from the FxA API server. * * Not for user consumption. Exists to cause the keys to be fetch. * * Returns user data so that it can be chained with other methods. * * @return Promise * The promise resolves to the credentials object of the signed-in user: * { * email: The user's email address * uid: The user's unique id * sessionToken: Session for the FxA server * kA: An encryption key from the FxA server * kB: An encryption key derived from the user's FxA password * verified: email verification status * } * or null if no user is signed in */ getKeys: function() { let currentState = this.currentAccountState; return currentState.getUserAccountData().then((userData) => { if (!userData) { throw new Error("Can't get keys; User is not signed in"); } if (userData.kA && userData.kB) { return userData; } if (!currentState.whenKeysReadyDeferred) { currentState.whenKeysReadyDeferred = Promise.defer(); if (userData.keyFetchToken) { this.fetchAndUnwrapKeys(userData.keyFetchToken).then( (dataWithKeys) => { if (!dataWithKeys.kA || !dataWithKeys.kB) { currentState.whenKeysReadyDeferred.reject( new Error("user data missing kA or kB") ); return; } currentState.whenKeysReadyDeferred.resolve(dataWithKeys); }, (err) => { currentState.whenKeysReadyDeferred.reject(err); } ); } else { currentState.whenKeysReadyDeferred.reject('No keyFetchToken'); } } return currentState.whenKeysReadyDeferred.promise; }).catch(err => this._handleTokenError(err) ).then(result => currentState.resolve(result)); }, fetchAndUnwrapKeys: function(keyFetchToken) { if (logPII) { log.debug("fetchAndUnwrapKeys: token: " + keyFetchToken); } let currentState = this.currentAccountState; return Task.spawn(function* task() { // Sign out if we don't have a key fetch token. if (!keyFetchToken) { log.warn("improper fetchAndUnwrapKeys() call: token missing"); yield this.signOut(); return null; } let {kA, wrapKB} = yield this.fetchKeys(keyFetchToken); let data = yield currentState.getUserAccountData(); // Sanity check that the user hasn't changed out from under us if (data.keyFetchToken !== keyFetchToken) { throw new Error("Signed in user changed while fetching keys!"); } // Next statements must be synchronous until we setUserAccountData // so that we don't risk getting into a weird state. let kB_hex = CryptoUtils.xor(CommonUtils.hexToBytes(data.unwrapBKey), wrapKB); if (logPII) { log.debug("kB_hex: " + kB_hex); } let updateData = { kA: CommonUtils.bytesAsHex(kA), kB: CommonUtils.bytesAsHex(kB_hex), keyFetchToken: null, // null values cause the item to be removed. unwrapBKey: null, } log.debug("Keys Obtained: kA=" + !!updateData.kA + ", kB=" + !!updateData.kB); if (logPII) { log.debug("Keys Obtained: kA=" + updateData.kA + ", kB=" + updateData.kB); } yield currentState.updateUserAccountData(updateData); // 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); return currentState.getUserAccountData(); }.bind(this)).then(result => currentState.resolve(result)); }, getAssertionFromCert: function(data, keyPair, cert, audience) { log.debug("getAssertionFromCert"); let payload = {}; let d = Promise.defer(); 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. jwcrypto.generateAssertion(cert, keyPair, audience, options, (err, signed) => { if (err) { log.error("getAssertionFromCert: " + err); d.reject(err); } else { log.debug("getAssertionFromCert returning signed: " + !!signed); if (logPII) { log.debug("getAssertionFromCert returning signed: " + signed); } d.resolve(signed); } }); return d.promise.then(result => currentState.resolve(result)); }, getCertificateSigned: function(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}. */ getKeypairAndCertificate: Task.async(function* (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 = false; try { ignoreCachedAuthCredentials = Services.prefs.getBoolPref("services.sync.debug.ignoreCachedAuthCredentials"); } catch(e) { // Pref doesn't exist } let mustBeValidUntil = this.now() + ASSERTION_USE_PERIOD; let accountData = yield 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 = yield new Promise((resolve, reject) => { jwcrypto.generateKeyPair("DS160", (err, kp) => { if (err) { return reject(err); } log.debug("got keyPair"); resolve({ rawKeyPair: kp, validUntil: keyWillBeValidUntil, }); }); }); } // and generate the cert. let certWillBeValidUntil = this.now() + CERT_LIFETIME; let certificate = yield 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, }, }; yield currentState.updateUserAccountData(toUpdate); } return { keyPair: keyPair.rawKeyPair, certificate: certificate, } }), getUserAccountData: function() { return this.currentAccountState.getUserAccountData(); }, isUserEmailVerified: function isUserEmailVerified(data) { return !!(data && data.verified); }, /** * Setup for and if necessary do email verification polling. */ loadAndPoll: function() { let currentState = this.currentAccountState; return currentState.getUserAccountData() .then(data => { if (data) { Services.telemetry.getHistogramById("FXA_CONFIGURED").add(1); if (!this.isUserEmailVerified(data)) { this.pollEmailStatus(currentState, data.sessionToken, "start"); } } return data; }); }, startVerifiedCheck: function(data) { log.debug("startVerifiedCheck", data && data.verified); if (logPII) { log.debug("startVerifiedCheck with user data", data); } // Get us to the verified state, then get the keys. This returns a promise // that will fire when we are completely ready. // // Login is truly complete once keys have been fetched, so once getKeys() // obtains and stores kA and kB, it will fire the onverified observer // notification. // 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).then( () => this.getKeys(), err => log.info("startVerifiedCheck promise was rejected: " + err) ); }, whenVerified: function(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.pollEmailStatus(currentState, data.sessionToken, "start"); } return currentState.whenVerifiedDeferred.promise.then( result => currentState.resolve(result) ); }, notifyObservers: function(topic, data) { log.debug("Notifying observers of " + topic); Services.obs.notifyObservers(null, topic, data); }, // XXX - pollEmailStatus should maybe be on the AccountState object? pollEmailStatus: function pollEmailStatus(currentState, sessionToken, why) { log.debug("entering pollEmailStatus: " + why); if (why == "start" || why == "push") { if (this.currentTimer) { log.debug("pollEmailStatus starting while existing timer is running"); clearTimeout(this.currentTimer); this.currentTimer = null; } // 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. this.pollStartDate = Date.now(); if (!currentState.whenVerifiedDeferred) { currentState.whenVerifiedDeferred = Promise.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(null, err => { log.info("the wait for user verification was stopped: " + err); }); } } // We return a promise for testing only. Other callers can ignore this, // since verification polling continues in the background. return this.checkEmailStatus(sessionToken, { reason: why }) .then((response) => { log.debug("checkEmailStatus -> " + JSON.stringify(response)); if (response && response.verified) { currentState.updateUserAccountData({ verified: true }) .then(() => { return currentState.getUserAccountData(); }) .then(data => { // Now that the user is verified, we can proceed to fetch keys if (currentState.whenVerifiedDeferred) { currentState.whenVerifiedDeferred.resolve(data); delete currentState.whenVerifiedDeferred; } // Tell FxAccountsManager to clear its cache this.notifyObservers(ON_FXA_UPDATE_NOTIFICATION, ONVERIFIED_NOTIFICATION); }); } else { // Poll email status again after a short delay. this.pollEmailStatusAgain(currentState, sessionToken); } }, error => { let timeoutMs = undefined; if (error && error.retryAfter) { // If the server told us to back off, back off the requested amount. timeoutMs = (error.retryAfter + 3) * 1000; } // The server will return 401 if a request parameter is erroneous or // if the session token expired. Let's continue polling otherwise. if (!error || !error.code || error.code != 401) { this.pollEmailStatusAgain(currentState, sessionToken, timeoutMs); } else { let error = new Error("Verification status check failed"); this._rejectWhenVerified(currentState, error); } }); }, _rejectWhenVerified(currentState, error) { currentState.whenVerifiedDeferred.reject(error); delete currentState.whenVerifiedDeferred; }, // Poll email status using truncated exponential back-off. pollEmailStatusAgain: function (currentState, sessionToken, timeoutMs) { let ageMs = Date.now() - this.pollStartDate; if (ageMs >= 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; } if (timeoutMs === undefined) { let currentMinute = Math.ceil(ageMs / 60000); timeoutMs = currentMinute <= 2 ? this.VERIFICATION_POLL_TIMEOUT_INITIAL : this.VERIFICATION_POLL_TIMEOUT_SUBSEQUENT; } log.debug("polling with timeout = " + timeoutMs); this.currentTimer = setTimeout(() => { this.pollEmailStatus(currentState, sessionToken, "timer"); }, timeoutMs); }, requiresHttps: function() { let allowHttp = false; try { allowHttp = Services.prefs.getBoolPref("identity.fxaccounts.allowHttp"); } catch(e) { // Pref doesn't exist } return allowHttp !== true; }, promiseAccountsSignUpURI() { return FxAccountsConfig.promiseAccountsSignUpURI(); }, promiseAccountsSignInURI() { return FxAccountsConfig.promiseAccountsSignInURI(); }, // Returns a promise that resolves with the URL to use to force a re-signin // of the current account. promiseAccountsForceSigninURI: Task.async(function *() { yield FxAccountsConfig.ensureConfigured(); let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.remote.force_auth.uri"); if (this.requiresHttps() && !/^https:/.test(url)) { // Comment to un-break emacs js-mode highlighting throw new Error("Firefox Accounts server must use HTTPS"); } let currentState = this.currentAccountState; // but we need to append the email address onto a query string. return this.getSignedInUser().then(accountData => { if (!accountData) { return null; } let newQueryPortion = url.indexOf("?") == -1 ? "?" : "&"; newQueryPortion += "email=" + encodeURIComponent(accountData.email); return url + newQueryPortion; }).then(result => currentState.resolve(result)); }), // Returns a promise that resolves with the URL to use to change // the current account's profile image. // if settingToEdit is set, the profile page should hightlight that setting // for the user to edit. promiseAccountsChangeProfileURI: function(entrypoint, settingToEdit = null) { let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.settings.uri"); if (settingToEdit) { url += (url.indexOf("?") == -1 ? "?" : "&") + "setting=" + encodeURIComponent(settingToEdit); } if (this.requiresHttps() && !/^https:/.test(url)) { // Comment to un-break emacs js-mode highlighting throw new Error("Firefox Accounts server must use HTTPS"); } let currentState = this.currentAccountState; // but we need to append the email address onto a query string. return this.getSignedInUser().then(accountData => { if (!accountData) { return null; } let newQueryPortion = url.indexOf("?") == -1 ? "?" : "&"; newQueryPortion += "email=" + encodeURIComponent(accountData.email); newQueryPortion += "&uid=" + encodeURIComponent(accountData.uid); if (entrypoint) { newQueryPortion += "&entrypoint=" + encodeURIComponent(entrypoint); } return url + newQueryPortion; }).then(result => currentState.resolve(result)); }, // Returns a promise that resolves with the URL to use to manage the current // user's FxA acct. promiseAccountsManageURI: function(entrypoint) { let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.settings.uri"); if (this.requiresHttps() && !/^https:/.test(url)) { // Comment to un-break emacs js-mode highlighting throw new Error("Firefox Accounts server must use HTTPS"); } let currentState = this.currentAccountState; // but we need to append the uid and email address onto a query string // (if the server has no matching uid it will offer to sign in with the // email address) return this.getSignedInUser().then(accountData => { if (!accountData) { return null; } let newQueryPortion = url.indexOf("?") == -1 ? "?" : "&"; newQueryPortion += "uid=" + encodeURIComponent(accountData.uid) + "&email=" + encodeURIComponent(accountData.email); if (entrypoint) { newQueryPortion += "&entrypoint=" + encodeURIComponent(entrypoint); } return url + newQueryPortion; }).then(result => currentState.resolve(result)); }, /** * Get an OAuth token for the user * * @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 */ getOAuthToken: Task.async(function* (options = {}) { log.debug("getOAuthToken enter"); let scope = options.scope; if (typeof scope === "string") { scope = [scope]; } if (!scope || !scope.length) { throw this._error(ERROR_INVALID_PARAMETER, "Missing or invalid 'scope' option"); } yield this._getVerifiedAccountOrReject(); // Early exit for a cached token. let currentState = this.currentAccountState; let cached = currentState.getCachedToken(scope); if (cached) { log.debug("getOAuthToken returning a cached token"); return cached.token; } // We are going to hit the server - this is the string we pass to it. let scopeString = scope.join(" "); let client = options.client; if (!client) { try { let defaultURL = Services.urlFormatter.formatURLPref("identity.fxaccounts.remote.oauth.uri"); client = new FxAccountsOAuthGrantClient({ serverURL: defaultURL, client_id: FX_OAUTH_CLIENT_ID }); } catch (e) { throw this._error(ERROR_INVALID_PARAMETER, e); } } let oAuthURL = client.serverURL.href; try { log.debug("getOAuthToken fetching new token from", oAuthURL); let assertion = yield this.getAssertion(oAuthURL); let result = yield client.getTokenFromAssertion(assertion, scopeString); let token = result.access_token; // If we got one, cache it. if (token) { let entry = {token: token, server: oAuthURL}; // But before we do, check the cache again - if we find one now, it // means someone else concurrently requested the same scope and beat // us to the cache write. To be nice to the server, we revoke the one // we just got and return the newly cached value. let cached = currentState.getCachedToken(scope); if (cached) { log.debug("Detected a race for this token - revoking the new one."); this._destroyOAuthToken(entry); return cached.token; } currentState.setCachedToken(scope, entry); } return token; } catch (err) { throw this._errorToErrorClass(err); } }), /** * 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: Task.async(function* (options) { if (!options.token || typeof options.token !== "string") { throw this._error(ERROR_INVALID_PARAMETER, "Missing or invalid 'token' option"); } let currentState = this.currentAccountState; 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); }); } }), _getVerifiedAccountOrReject: Task.async(function* () { let data = yield 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); } }), /* * 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: function (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: function(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; }, /** * Get the user's account and profile data * * @param options * { * contentUrl: (string) Used by the FxAccountsWebChannel. * Defaults to pref identity.fxaccounts.settings.uri * profileServerUrl: (string) Used by the FxAccountsWebChannel. * Defaults to pref identity.fxaccounts.remote.profile.uri * } * * @return Promise.<object | Error> * The promise resolves to an accountData object with extra profile * information such as profileImageUrl, or rejects with * an error object ({error: ERROR, details: {}}) of the following: * INVALID_PARAMETER * NO_ACCOUNT * UNVERIFIED_ACCOUNT * NETWORK_ERROR * AUTH_ERROR * UNKNOWN_ERROR */ getSignedInUserProfile: function () { let currentState = this.currentAccountState; return this.profile.getProfile().then( profileData => { let profile = Cu.cloneInto(profileData, {}); return currentState.resolve(profile); }, error => { log.error("Could not retrieve profile data", error); return currentState.reject(error); } ).catch(err => Promise.reject(this._errorToErrorClass(err))); }, // 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.getSignedInUser().then(signedInUser => { if (signedInUser) { return this._registerOrUpdateDevice(signedInUser); } }).catch(error => this._logErrorAndResetDeviceRegistrationVersion(error)); }, handleDeviceDisconnection(deviceId) { return this.currentAccountState.getUserAccountData() .then(data => data ? data.deviceId : null) .then(localDeviceId => { if (deviceId == localDeviceId) { this.notifyObservers(ON_DEVICE_DISCONNECTED_NOTIFICATION, deviceId); return this.signOut(true); } log.error( "The device ID to disconnect doesn't match with the local device ID.\n" + "Local: " + localDeviceId + ", ID to disconnect: " + deviceId); }); }, /** * Delete all the cached persisted credentials we store for FxA. * * @return Promise resolves when the user data has been persisted */ resetCredentials() { // 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); let currentState = this.currentAccountState; return currentState.updateUserAccountData(updateData); }, // If you change what we send to the FxA servers during device registration, // you'll have to bump the DEVICE_REGISTRATION_VERSION number to force older // devices to re-register when Firefox updates _registerOrUpdateDevice(signedInUser) { try { // Allow tests to skip device registration because: // 1. It makes remote requests to the auth server. // 2. _getDeviceName does not work from xpcshell. // 3. The B2G tests fail when attempting to import services-sync/util.js. if (Services.prefs.getBoolPref("identity.fxaccounts.skipDeviceRegistration")) { return Promise.resolve(); } } catch(ignore) {} if (!signedInUser.sessionToken) { return Promise.reject(new Error( "_registerOrUpdateDevice called without a session token")); } return this.fxaPushService.registerPushEndpoint().then(subscription => { const deviceName = this._getDeviceName(); let deviceOptions = {}; // if we were able to obtain a subscription if (subscription && subscription.endpoint) { deviceOptions.pushCallback = subscription.endpoint; let publicKey = subscription.getKey('p256dh'); let authKey = subscription.getKey('auth'); if (publicKey && authKey) { deviceOptions.pushPublicKey = urlsafeBase64Encode(publicKey); deviceOptions.pushAuthKey = urlsafeBase64Encode(authKey); } } if (signedInUser.deviceId) { log.debug("updating existing device details"); return this.fxAccountsClient.updateDevice( signedInUser.sessionToken, signedInUser.deviceId, deviceName, deviceOptions); } log.debug("registering new device details"); return this.fxAccountsClient.registerDevice( signedInUser.sessionToken, deviceName, this._getDeviceType(), deviceOptions); }).then(device => this.currentAccountState.updateUserAccountData({ deviceId: device.id, deviceRegistrationVersion: this.DEVICE_REGISTRATION_VERSION }).then(() => device.id) ).catch(error => this._handleDeviceError(error, signedInUser.sessionToken)); }, _getDeviceName() { return Utils.getDeviceName(); }, _getDeviceType() { return Utils.getDeviceType(); }, _handleDeviceError(error, sessionToken) { return Promise.resolve().then(() => { if (error.code === 400) { if (error.errno === ERRNO_UNKNOWN_DEVICE) { return this._recoverFromUnknownDevice(); } if (error.errno === ERRNO_DEVICE_SESSION_CONFLICT) { return this._recoverFromDeviceSessionConflict(error, sessionToken); } } // `_handleTokenError` re-throws the error. return this._handleTokenError(error); }).catch(error => this._logErrorAndResetDeviceRegistrationVersion(error) ).catch(() => {}); }, _recoverFromUnknownDevice() { // FxA did not recognise the device id. Handle it by clearing the device // id on the account data. At next sync or next sign-in, registration is // retried and should succeed. log.warn("unknown device id, clearing the local device data"); return this.currentAccountState.updateUserAccountData({ deviceId: null }) .catch(error => this._logErrorAndResetDeviceRegistrationVersion(error)); }, _recoverFromDeviceSessionConflict(error, sessionToken) { // FxA has already associated this session with a different device id. // Perhaps we were beaten in a race to register. Handle the conflict: // 1. Fetch the list of devices for the current user from FxA. // 2. Look for ourselves in the list. // 3. If we find a match, set the correct device id and device registration // version on the account data and return the correct device id. At next // sync or next sign-in, registration is retried and should succeed. // 4. If we don't find a match, log the original error. log.warn("device session conflict, attempting to ascertain the correct device id"); return this.fxAccountsClient.getDeviceList(sessionToken) .then(devices => { const matchingDevices = devices.filter(device => device.isCurrentDevice); const length = matchingDevices.length; if (length === 1) { const deviceId = matchingDevices[0].id; return this.currentAccountState.updateUserAccountData({ deviceId, deviceRegistrationVersion: null }).then(() => deviceId); } if (length > 1) { log.error("insane server state, " + length + " devices for this session"); } return this._logErrorAndResetDeviceRegistrationVersion(error); }).catch(secondError => { log.error("failed to recover from device-session conflict", secondError); this._logErrorAndResetDeviceRegistrationVersion(error) }); }, _logErrorAndResetDeviceRegistrationVersion(error) { // Device registration should never cause other operations to fail. // If we've reached this point, just log the error and reset the device // registration version on the account data. At next sync or next sign-in, // registration will be retried. log.error("device registration failed", error); return this.currentAccountState.updateUserAccountData({ deviceRegistrationVersion: null }).catch(secondError => { log.error( "failed to reset the device registration version, device registration won't be retried", secondError); }).then(() => {}); }, _handleTokenError(err) { if (!err || err.code != 401 || err.errno != ERRNO_INVALID_AUTH_TOKEN) { throw err; } log.warn("recovering from invalid token error", err); return this.accountStatus().then(exists => { if (!exists) { // Delete all local account data. Since the account no longer // exists, we can skip the remote calls. log.info("token invalidated because the account no longer exists"); return this.signOut(true); } log.info("clearing credentials to handle invalid token error"); return this.resetCredentials(); }).then(() => Promise.reject(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.loadAndPoll(); return a; });