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gecko/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/. */
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://gre/modules/osfile.jsm");
Cu.import("resource://services-common/utils.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/FxAccountsCommon.js");
XPCOMUtils.defineLazyModuleGetter(this, "FxAccountsClient",
"resource://gre/modules/FxAccountsClient.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");
// All properties exposed by the public FxAccounts API.
let publicProperties = [
"accountStatus",
"getAccountsClient",
"getAccountsSignInURI",
"getAccountsSignUpURI",
"getAssertion",
"getKeys",
"getSignedInUser",
"getOAuthToken",
"getSignedInUserProfile",
"loadAndPoll",
"localtimeOffsetMsec",
"now",
"promiseAccountsForceSigninURI",
"promiseAccountsChangeProfileURI",
"promiseAccountsManageURI",
"removeCachedOAuthToken",
"resendVerificationEmail",
"setSignedInUser",
"signOut",
"version",
"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.
let AccountState = function(fxaInternal, signedInUserStorage, accountData = null) {
this.fxaInternal = fxaInternal;
this.signedInUserStorage = signedInUserStorage;
this.signedInUser = accountData ? {version: DATA_FORMAT_VERSION, accountData} : null;
this.uid = accountData ? accountData.uid : null;
this.oauthTokens = {};
};
AccountState.prototype = {
cert: null,
keyPair: null,
signedInUser: null,
oauthTokens: null,
whenVerifiedDeferred: null,
whenKeysReadyDeferred: null,
profile: null,
promiseInitialAccountData: null,
uid: null,
get isCurrent() this.fxaInternal && this.fxaInternal.currentAccountState === this,
abort: function() {
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.signedInUser = null;
this.uid = null;
this.fxaInternal = null;
this.initProfilePromise = null;
if (this.profile) {
this.profile.tearDown();
this.profile = null;
}
},
// Clobber all cached data and write that empty data to storage.
signOut() {
this.cert = null;
this.keyPair = null;
this.signedInUser = null;
this.oauthTokens = {};
this.uid = null;
return this.persistUserData();
},
getUserAccountData() {
if (!this.isCurrent) {
return this.reject(new Error("Another user has signed in"));
}
if (this.promiseInitialAccountData) {
// We are still reading the data for the first and only time.
return this.promiseInitialAccountData;
}
// We've previously read it successfully (and possibly updated it since)
if (this.signedInUser) {
return this.resolve(this.signedInUser.accountData);
}
// We fetch the signedInUser data first, then fetch the token store and
// ensure the uid in the tokens matches our user.
let accountData = null;
let oauthTokens = {};
return this.promiseInitialAccountData = this.signedInUserStorage.get()
.then(user => {
if (logPII) {
log.debug("getUserAccountData", user);
}
// In an ideal world we could cache the data in this.signedInUser, but
// if we do, the interaction with the login manager breaks when the
// password is locked as this read may only have obtained partial data.
// Therefore every read *must* really read incase the login manager is
// now unlocked. We could fix this with a refactor...
accountData = user ? user.accountData : null;
}, err => {
// Error reading signed in user account data.
this.promiseInitialAccountData = null;
if (err instanceof OS.File.Error && err.becauseNoSuchFile) {
// File hasn't been created yet. That will be done
// on the first call to setSignedInUser
return;
}
// something else went wrong - report the error but continue without
// user data.
log.error("Failed to read signed in user data", err);
}).then(() => {
if (!accountData) {
return null;
}
return this.signedInUserStorage.getOAuthTokens();
}).then(tokenData => {
if (tokenData && tokenData.tokens &&
tokenData.version == DATA_FORMAT_VERSION &&
tokenData.uid == accountData.uid ) {
oauthTokens = tokenData.tokens;
}
}, err => {
// Error reading the OAuth tokens file.
if (err instanceof OS.File.Error && err.becauseNoSuchFile) {
// File hasn't been created yet, but will be when tokens are saved.
return;
}
log.error("Failed to read oauth tokens", err)
}).then(() => {
// We are done - clear our promise and save the data if we are still
// current.
this.promiseInitialAccountData = null;
if (this.isCurrent) {
// As above, we can not cache the data to this.signedInUser as we
// may only have partial data due to a locked MP, so the next
// request must re-read incase it is now unlocked.
// But we do save the tokens and the uid
this.oauthTokens = oauthTokens;
this.uid = accountData ? accountData.uid : null;
}
return accountData;
});
// phew!
},
// XXX - this should really be called "updateCurrentUserData" or similar as
// it is only ever used to add new fields to the *current* user, not to
// set a new user as current.
setUserAccountData: function(accountData) {
if (!this.isCurrent) {
return this.reject(new Error("Another user has signed in"));
}
if (this.promiseInitialAccountData) {
throw new Error("Can't set account data before it's been read.");
}
if (!accountData) {
// see above - this should really be called "updateCurrentUserData" or similar.
throw new Error("Attempt to use setUserAccountData with null user data.");
}
if (accountData.uid != this.uid) {
// see above - this should really be called "updateCurrentUserData" or similar.
throw new Error("Attempt to use setUserAccountData with a different user.");
}
// Set our signedInUser before we start the write, so any updates to the
// data while the write completes are still captured.
this.signedInUser = {version: DATA_FORMAT_VERSION, accountData: accountData};
return this.signedInUserStorage.set(this.signedInUser)
.then(() => this.resolve(accountData));
},
getCertificate: function(data, keyPair, mustBeValidUntil) {
if (logPII) {
// don't stringify unless it will be written. We should replace this
// check with param substitutions added in bug 966674
log.debug("getCertificate" + JSON.stringify(this.signedInUser));
}
// TODO: get the lifetime from the cert's .exp field
if (this.cert && this.cert.validUntil > mustBeValidUntil) {
log.debug(" getCertificate already had one");
return this.resolve(this.cert.cert);
}
if (Services.io.offline) {
return this.reject(new Error(ERROR_OFFLINE));
}
let willBeValidUntil = this.fxaInternal.now() + CERT_LIFETIME;
return this.fxaInternal.getCertificateSigned(data.sessionToken,
keyPair.serializedPublicKey,
CERT_LIFETIME).then(
cert => {
log.debug("getCertificate got a new one: " + !!cert);
this.cert = {
cert: cert,
validUntil: willBeValidUntil
};
return cert;
}
).then(result => this.resolve(result));
},
getKeyPair: function(mustBeValidUntil) {
// If the debugging pref to ignore cached authentication credentials is set for Sync,
// then don't use any cached key pair, 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
}
if (!ignoreCachedAuthCredentials && this.keyPair && (this.keyPair.validUntil > mustBeValidUntil)) {
log.debug("getKeyPair: already have a keyPair");
return this.resolve(this.keyPair.keyPair);
}
// Otherwse, create a keypair and set validity limit.
let willBeValidUntil = this.fxaInternal.now() + KEY_LIFETIME;
let d = Promise.defer();
jwcrypto.generateKeyPair("DS160", (err, kp) => {
if (err) {
return this.reject(err);
}
this.keyPair = {
keyPair: kp,
validUntil: willBeValidUntil
};
log.debug("got keyPair");
delete this.cert;
d.resolve(this.keyPair.keyPair);
});
return d.promise.then(result => this.resolve(result));
},
// Get the account's profile image URL from the profile server
getProfile: function () {
return this.initProfile()
.then(() => this.profile.getProfile());
},
// Instantiate a FxAccountsProfile with a fresh OAuth token if needed
initProfile: function () {
let profileServerUrl = Services.urlFormatter.formatURLPref("identity.fxaccounts.remote.profile.uri");
let oAuthOptions = {
scope: "profile"
};
if (this.initProfilePromise) {
return this.initProfilePromise;
}
this.initProfilePromise = this.fxaInternal.getOAuthToken(oAuthOptions)
.then(token => {
this.profile = new FxAccountsProfile(this, {
profileServerUrl: profileServerUrl,
token: token
});
this.initProfilePromise = null;
})
.then(null, err => {
this.initProfilePromise = null;
throw err;
});
return this.initProfilePromise;
},
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.
// 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);
if (this.oauthTokens[key]) {
// 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 this.oauthTokens[key];
}
return null;
},
// Get an array of tokenData for all cached tokens.
getAllCachedTokens() {
this._cachePreamble();
let result = [];
for (let [key, tokenValue] in Iterator(this.oauthTokens)) {
result.push(tokenValue);
}
return result;
},
// 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] in Iterator(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();
let record;
if (this.uid) {
record = {
version: DATA_FORMAT_VERSION,
uid: this.uid,
tokens: this.oauthTokens,
};
} else {
record = null;
}
return this.signedInUserStorage.setOAuthTokens(record).catch(
err => {
log.error("Failed to save account data for token cache", err);
}
);
},
persistUserData() {
return this._persistCachedTokens().catch(err => {
log.error("Failed to persist cached tokens", err);
}).then(() => {
return this.signedInUserStorage.set(this.signedInUser);
}).catch(err => {
log.error("Failed to persist account data", 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);
}
}
/**
* 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) {
// A little work-around to ensure the initial currentAccountState has
// the same mock storage the test passed in.
if (mockInternal.signedInUserStorage) {
internal.currentAccountState.signedInUserStorage = mockInternal.signedInUserStorage;
}
// Exposes the internal object for testing only.
external.internal = internal;
}
return Object.freeze(external);
}
/**
* The internal API's constructor.
*/
function FxAccountsInternal() {
this.version = DATA_FORMAT_VERSION;
// Make a local copy of this constant so we can mock it in testing
this.POLL_SESSION = POLL_SESSION;
// The one and only "storage" object. While this is created here, the
// FxAccountsInternal object does *not* use it directly, but instead passes
// it to AccountState objects which has sole responsibility for storage.
// Ideally we would create it in the AccountState objects, but that makes
// testing hard as AccountState objects are regularly created and thrown
// away. Doing it this way means tests can mock/replace this storage object
// and have it used by all AccountState objects, even those created before
// and after the mock has been setup.
// We only want the fancy LoginManagerStorage on desktop.
#if defined(MOZ_B2G)
this.signedInUserStorage = new JSONStorage({
#else
this.signedInUserStorage = new LoginManagerStorage({
#endif
// We don't reference |profileDir| in the top-level module scope
// as we may be imported before we know where it is.
filename: DEFAULT_STORAGE_FILENAME,
oauthTokensFilename: DEFAULT_OAUTH_TOKENS_FILENAME,
baseDir: OS.Constants.Path.profileDir,
});
// We interact with the Firefox Accounts auth server in order to confirm that
// a user's email has been verified and also to fetch the user's keys from
// the server. We manage these processes in possibly long-lived promises
// that are internal to this object (never exposed to callers). Because
// Firefox Accounts allows for only one logged-in user, and because it's
// conceivable that while we are waiting to verify one identity, a caller
// could start verification on a second, different identity, we need to be
// able to abort all work on the first sign-in process. The currentTimer and
// currentAccountState are used for this purpose.
// (XXX - should the timer be directly on the currentAccountState?)
this.currentTimer = null;
this.currentAccountState = new AccountState(this, this.signedInUserStorage);
}
/**
* The internal API's prototype.
*/
FxAccountsInternal.prototype = {
/**
* The current data format's version number.
*/
version: DATA_FORMAT_VERSION,
// The timeout (in ms) we use to poll for a verified mail for the first 2 mins.
VERIFICATION_POLL_TIMEOUT_INITIAL: 5000, // 5 seconds
// And how often we poll after the first 2 mins.
VERIFICATION_POLL_TIMEOUT_SUBSEQUENT: 15000, // 15 seconds.
_fxAccountsClient: null,
get fxAccountsClient() {
if (!this._fxAccountsClient) {
this._fxAccountsClient = new FxAccountsClient();
}
return this._fxAccountsClient;
},
/**
* 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) {
return this.fxAccountsClient.recoveryEmailStatus(sessionToken);
},
/**
* 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");
this.abortExistingFlow();
let currentAccountState = this.currentAccountState = new AccountState(
this,
this.signedInUserStorage,
JSON.parse(JSON.stringify(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.
return currentAccountState.persistUserData().then(() => {
this.notifyObservers(ONLOGIN_NOTIFICATION);
if (!this.isUserEmailVerified(credentials)) {
this.startVerifiedCheck(credentials);
}
}).then(() => {
return currentAccountState.resolve();
});
},
/**
* returns a promise that fires with the assertion. If there is no verified
* signed-in user, fires with null.
*/
getAssertion: function getAssertion(audience) {
log.debug("enter getAssertion()");
let currentState = this.currentAccountState;
let mustBeValidUntil = this.now() + ASSERTION_USE_PERIOD;
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;
}
return currentState.getKeyPair(mustBeValidUntil).then(keyPair => {
return currentState.getCertificate(data, keyPair, mustBeValidUntil)
.then(cert => {
return this.getAssertionFromCert(data, keyPair, cert, audience);
});
});
}).then(result => currentState.resolve(result));
},
/**
* 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) {
this.pollEmailStatus(currentState, data.sessionToken, "start");
return this.fxAccountsClient.resendVerificationEmail(data.sessionToken);
}
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;
}
this.currentAccountState.abort();
this.currentAccountState = new AccountState(this, this.signedInUserStorage);
},
accountStatus: function accountStatus() {
return this.currentAccountState.getUserAccountData().then(data => {
if (!data) {
return false;
}
return this.fxAccountsClient.accountStatus(data.uid);
});
},
_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 tokenInfo of tokenInfos) {
promises.push(this._destroyOAuthToken(tokenInfo));
}
return Promise.all(promises);
},
signOut: function signOut(localOnly) {
let currentState = this.currentAccountState;
let sessionToken;
let tokensToRevoke;
return currentState.getUserAccountData().then(data => {
// Save the session token for use in the call to signOut below.
sessionToken = data && data.sessionToken;
tokensToRevoke = currentState.getAllCachedTokens();
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.
return this._signOutServer(sessionToken);
}).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(() => {
// just for testing - notifications are cheap when no observers.
this.notifyObservers("testhelper-fxa-signout-complete");
});
}
}).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.abortExistingFlow(); // this resets this.currentAccountState.
});
},
_signOutServer: function signOutServer(sessionToken) {
return this.fxAccountsClient.signOut(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;
}).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);
}
data.kA = CommonUtils.bytesAsHex(kA);
data.kB = CommonUtils.bytesAsHex(kB_hex);
delete data.keyFetchToken;
delete data.unwrapBKey;
log.debug("Keys Obtained: kA=" + !!data.kA + ", kB=" + !!data.kB);
if (logPII) {
log.debug("Keys Obtained: kA=" + data.kA + ", kB=" + data.kB);
}
yield currentState.setUserAccountData(data);
// 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 data;
}.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
);
},
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 && !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") {
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);
});
}
}
this.checkEmailStatus(sessionToken)
.then((response) => {
log.debug("checkEmailStatus -> " + JSON.stringify(response));
if (response && response.verified) {
currentState.getUserAccountData()
.then((data) => {
data.verified = true;
return currentState.setUserAccountData(data);
})
.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);
}
});
},
// 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.")
currentState.whenVerifiedDeferred.reject(error);
delete currentState.whenVerifiedDeferred;
}
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);
},
_requireHttps: function() {
let allowHttp = false;
try {
allowHttp = Services.prefs.getBoolPref("identity.fxaccounts.allowHttp");
} catch(e) {
// Pref doesn't exist
}
return allowHttp !== true;
},
// Return the URI of the remote UI flows.
getAccountsSignUpURI: function() {
let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.remote.signup.uri");
if (this._requireHttps() && !/^https:/.test(url)) { // Comment to un-break emacs js-mode highlighting
throw new Error("Firefox Accounts server must use HTTPS");
}
return url;
},
// Return the URI of the remote UI flows.
getAccountsSignInURI: function() {
let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.remote.signin.uri");
if (this._requireHttps() && !/^https:/.test(url)) { // Comment to un-break emacs js-mode highlighting
throw new Error("Firefox Accounts server must use HTTPS");
}
return url;
},
// Returns a promise that resolves with the URL to use to force a re-signin
// of the current account.
promiseAccountsForceSigninURI: function() {
let url = Services.urlFormatter.formatURLPref("identity.fxaccounts.remote.force_auth.uri");
if (this._requireHttps() && !/^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._requireHttps() && !/^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._requireHttps() && !/^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")) {
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 accountState = this.currentAccountState;
return accountState.getProfile()
.then((profileData) => {
let profile = JSON.parse(JSON.stringify(profileData));
return accountState.resolve(profile);
},
(error) => {
log.error("Could not retrieve profile data", error);
return accountState.reject(error);
})
.then(null, err => Promise.reject(this._errorToErrorClass(err)));
},
};
/**
* JSONStorage constructor that creates instances that may set/get
* to a specified file, in a directory that will be created if it
* doesn't exist.
*
* @param options {
* filename: of the file to write to
* baseDir: directory where the file resides
* }
* @return instance
*/
function JSONStorage(options) {
this.baseDir = options.baseDir;
this.path = OS.Path.join(options.baseDir, options.filename);
this.oauthTokensPath = OS.Path.join(options.baseDir, options.oauthTokensFilename);
};
JSONStorage.prototype = {
set: function(contents) {
return OS.File.makeDir(this.baseDir, {ignoreExisting: true})
.then(CommonUtils.writeJSON.bind(null, contents, this.path));
},
get: function() {
return CommonUtils.readJSON(this.path);
},
setOAuthTokens: function(contents) {
return OS.File.makeDir(this.baseDir, {ignoreExisting: true})
.then(CommonUtils.writeJSON.bind(null, contents, this.oauthTokensPath));
},
getOAuthTokens: function(contents) {
return CommonUtils.readJSON(this.oauthTokensPath);
},
};
/**
* LoginManagerStorage constructor that creates instances that may set/get
* from a combination of a clear-text JSON file and stored securely in
* the nsILoginManager.
*
* @param options {
* filename: of the plain-text file to write to
* baseDir: directory where the file resides
* }
* @return instance
*/
function LoginManagerStorage(options) {
// we reuse the JSONStorage for writing the plain-text stuff.
this.jsonStorage = new JSONStorage(options);
}
LoginManagerStorage.prototype = {
// The fields in the credentials JSON object that are stored in plain-text
// in the profile directory. All other fields are stored in the login manager,
// and thus are only available when the master-password is unlocked.
// a hook point for testing.
get _isLoggedIn() {
return Services.logins.isLoggedIn;
},
// Clear any data from the login manager. Returns true if the login manager
// was unlocked (even if no existing logins existed) or false if it was
// locked (meaning we don't even know if it existed or not.)
_clearLoginMgrData: Task.async(function* () {
try { // Services.logins might be third-party and broken...
yield Services.logins.initializationPromise;
if (!this._isLoggedIn) {
return false;
}
let logins = Services.logins.findLogins({}, FXA_PWDMGR_HOST, null, FXA_PWDMGR_REALM);
for (let login of logins) {
Services.logins.removeLogin(login);
}
return true;
} catch (ex) {
log.error("Failed to clear login data: ${}", ex);
return false;
}
}),
set: Task.async(function* (contents) {
if (!contents) {
// User is signing out - write the null to the json file.
yield this.jsonStorage.set(contents);
// And nuke it from the login manager.
let cleared = yield this._clearLoginMgrData();
if (!cleared) {
// just log a message - we verify that the email address matches when
// we reload it, so having a stale entry doesn't really hurt.
log.info("not removing credentials from login manager - not logged in");
}
return;
}
// We are saving actual data.
// Split the data into 2 chunks - one to go to the plain-text, and the
// other to write to the login manager.
let toWriteJSON = {version: contents.version};
let accountDataJSON = toWriteJSON.accountData = {};
let toWriteLoginMgr = {version: contents.version};
let accountDataLoginMgr = toWriteLoginMgr.accountData = {};
for (let [name, value] of Iterator(contents.accountData)) {
if (FXA_PWDMGR_PLAINTEXT_FIELDS.indexOf(name) >= 0) {
accountDataJSON[name] = value;
} else {
accountDataLoginMgr[name] = value;
}
}
yield this.jsonStorage.set(toWriteJSON);
try { // Services.logins might be third-party and broken...
// and the stuff into the login manager.
yield Services.logins.initializationPromise;
// If MP is locked we silently fail - the user may need to re-auth
// next startup.
if (!this._isLoggedIn) {
log.info("not saving credentials to login manager - not logged in");
return;
}
// write the rest of the data to the login manager.
let loginInfo = new Components.Constructor(
"@mozilla.org/login-manager/loginInfo;1", Ci.nsILoginInfo, "init");
let login = new loginInfo(FXA_PWDMGR_HOST,
null, // aFormSubmitURL,
FXA_PWDMGR_REALM, // aHttpRealm,
contents.accountData.email, // aUsername
JSON.stringify(toWriteLoginMgr), // aPassword
"", // aUsernameField
"");// aPasswordField
let existingLogins = Services.logins.findLogins({}, FXA_PWDMGR_HOST, null,
FXA_PWDMGR_REALM);
if (existingLogins.length) {
Services.logins.modifyLogin(existingLogins[0], login);
} else {
Services.logins.addLogin(login);
}
} catch (ex) {
log.error("Failed to save data to the login manager: ${}", ex);
}
}),
get: Task.async(function* () {
// we need to suck some data from the .json file in the profile dir and
// some other from the login manager.
let data = yield this.jsonStorage.get();
if (!data) {
// no user logged in, nuke the storage data incase we couldn't remove
// it previously and then we are done.
yield this._clearLoginMgrData();
return null;
}
// if we have encryption keys it must have been saved before we
// used the login manager, so re-save it.
if (data.accountData.kA || data.accountData.kB || data.keyFetchToken) {
// We need to migrate, but the MP might be locked (eg, on the first run
// with this enabled, we will get here very soon after startup, so will
// certainly be locked.) This means we can't actually store the data in
// the login manager (and thus might lose it if we migrated now)
// So if the MP is locked, we *don't* migrate, but still just return
// the subset of data we now store in the JSON.
// This will cause sync to notice the lack of keys, force an unlock then
// re-fetch the account data to see if the keys are there. At *that*
// point we will end up back here, but because the MP is now unlocked
// we can actually perform the migration.
if (!this._isLoggedIn) {
// return the "safe" subset but leave the storage alone.
log.info("account data needs migration to the login manager but the MP is locked.");
let result = {
version: data.version,
accountData: {},
};
for (let fieldName of FXA_PWDMGR_PLAINTEXT_FIELDS) {
result.accountData[fieldName] = data.accountData[fieldName];
}
return result;
}
// actually migrate - just calling .set() will split everything up.
log.info("account data is being migrated to the login manager.");
yield this.set(data);
}
try { // Services.logins might be third-party and broken...
// read the data from the login manager and merge it for return.
yield Services.logins.initializationPromise;
if (!this._isLoggedIn) {
log.info("returning partial account data as the login manager is locked.");
return data;
}
let logins = Services.logins.findLogins({}, FXA_PWDMGR_HOST, null, FXA_PWDMGR_REALM);
if (logins.length == 0) {
// This could happen if the MP was locked when we wrote the data.
log.info("Can't find the rest of the credentials in the login manager");
return data;
}
let login = logins[0];
if (login.username == data.accountData.email) {
let lmData = JSON.parse(login.password);
if (lmData.version == data.version) {
// Merge the login manager data
copyObjectProperties(lmData.accountData, data.accountData);
} else {
log.info("version field in the login manager doesn't match - ignoring it");
yield this._clearLoginMgrData();
}
} else {
log.info("username in the login manager doesn't match - ignoring it");
yield this._clearLoginMgrData();
}
} catch (ex) {
log.error("Failed to get data from the login manager: ${}", ex);
}
return data;
}),
// OAuth tokens are always written to disk, so delegate to our JSON storage.
// (Bug 1013064 comments 23-25 explain why we save the sessionToken into the
// plain JSON file, and the same logic applies for oauthTokens being in JSON)
getOAuthTokens() {
return this.jsonStorage.getOAuthTokens();
},
setOAuthTokens(contents) {
return this.jsonStorage.setOAuthTokens(contents);
},
}
// 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;
});
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