gecko/toolkit/identity/Identity.jsm

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/* -*- Mode: js2; js2-basic-offset: 2; indent-tabs-mode: nil; -*- */
/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const EXPORTED_SYMBOLS = ["IdentityService"];
const Cu = Components.utils;
const Ci = Components.interfaces;
const Cc = Components.classes;
const Cr = Components.results;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/identity/LogUtils.jsm");
Cu.import("resource://gre/modules/identity/IdentityStore.jsm");
Cu.import("resource://gre/modules/identity/RelyingParty.jsm");
Cu.import("resource://gre/modules/identity/IdentityProvider.jsm");
XPCOMUtils.defineLazyModuleGetter(this,
"jwcrypto",
"resource://gre/modules/identity/jwcrypto.jsm");
function log(...aMessageArgs) {
Logger.log.apply(Logger, ["core"].concat(aMessageArgs));
}
function reportError(...aMessageArgs) {
Logger.reportError.apply(Logger, ["core"].concat(aMessageArgs));
}
function IDService() {
Services.obs.addObserver(this, "quit-application-granted", false);
Services.obs.addObserver(this, "identity-auth-complete", false);
this._store = IdentityStore;
this.RP = RelyingParty;
this.IDP = IdentityProvider;
}
IDService.prototype = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports, Ci.nsIObserver]),
observe: function observe(aSubject, aTopic, aData) {
switch (aTopic) {
case "quit-application-granted":
Services.obs.removeObserver(this, "quit-application-granted");
this.shutdown();
break;
case "identity-auth-complete":
if (!aSubject || !aSubject.wrappedJSObject)
break;
let subject = aSubject.wrappedJSObject;
log("Auth complete:", aSubject.wrappedJSObject);
// We have authenticated in order to provision an identity.
// So try again.
this.selectIdentity(subject.rpId, subject.identity);
break;
}
},
reset: function reset() {
// Explicitly call reset() on our RP and IDP classes.
// This is here to make testing easier. When the
// quit-application-granted signal is emitted, reset() will be
// called here, on RP, on IDP, and on the store. So you don't
// need to use this :)
this._store.reset();
this.RP.reset();
this.IDP.reset();
},
shutdown: function shutdown() {
log("shutdown");
Services.obs.removeObserver(this, "identity-auth-complete");
Services.obs.removeObserver(this, "quit-application-granted");
},
/**
* Parse an email into username and domain if it is valid, else return null
*/
parseEmail: function parseEmail(email) {
var match = email.match(/^([^@]+)@([^@^/]+.[a-z]+)$/);
if (match) {
return {
username: match[1],
domain: match[2]
};
}
return null;
},
/**
* The UX wants to add a new identity
* often followed by selectIdentity()
*
* @param aIdentity
* (string) the email chosen for login
*/
addIdentity: function addIdentity(aIdentity) {
if (this._store.fetchIdentity(aIdentity) === null) {
this._store.addIdentity(aIdentity, null, null);
}
},
/**
* The UX comes back and calls selectIdentity once the user has picked
* an identity.
*
* @param aRPId
* (integer) the id of the doc object obtained in .watch() and
* passed to the UX component.
*
* @param aIdentity
* (string) the email chosen for login
*/
selectIdentity: function selectIdentity(aRPId, aIdentity) {
log("selectIdentity: RP id:", aRPId, "identity:", aIdentity);
// Get the RP that was stored when watch() was invoked.
let rp = this.RP._rpFlows[aRPId];
if (!rp) {
reportError("selectIdentity", "Invalid RP id: ", aRPId);
return;
}
// It's possible that we are in the process of provisioning an
// identity.
let provId = rp.provId;
let rpLoginOptions = {
loggedInEmail: aIdentity,
origin: rp.origin
};
log("selectIdentity: provId:", provId, "origin:", rp.origin);
// Once we have a cert, and once the user is authenticated with the
// IdP, we can generate an assertion and deliver it to the doc.
let self = this;
this.RP._generateAssertion(rp.origin, aIdentity, function hadReadyAssertion(err, assertion) {
if (!err && assertion) {
self.RP._doLogin(rp, rpLoginOptions, assertion);
return;
}
// Need to provision an identity first. Begin by discovering
// the user's IdP.
self._discoverIdentityProvider(aIdentity, function gotIDP(err, idpParams) {
if (err) {
rp.doError(err);
return;
}
// The idpParams tell us where to go to provision and authenticate
// the identity.
self.IDP._provisionIdentity(aIdentity, idpParams, provId, function gotID(err, aProvId) {
// Provision identity may have created a new provision flow
// for us. To make it easier to relate provision flows with
// RP callers, we cross index the two here.
rp.provId = aProvId;
self.IDP._provisionFlows[aProvId].rpId = aRPId;
// At this point, we already have a cert. If the user is also
// already authenticated with the IdP, then we can try again
// to generate an assertion and login.
if (err) {
// We are not authenticated. If we have already tried to
// authenticate and failed, then this is a "hard fail" and
// we give up. Otherwise we try to authenticate with the
// IdP.
if (self.IDP._provisionFlows[aProvId].didAuthentication) {
self.IDP._cleanUpProvisionFlow(aProvId);
self.RP._cleanUpProvisionFlow(aRPId, aProvId);
log("ERROR: selectIdentity: authentication hard fail");
rp.doError("Authentication fail.");
return;
}
// Try to authenticate with the IdP. Note that we do
// not clean up the provision flow here. We will continue
// to use it.
self.IDP._doAuthentication(aProvId, idpParams);
return;
}
// Provisioning flows end when a certificate has been registered.
// Thus IdentityProvider's registerCertificate() cleans up the
// current provisioning flow. We only do this here on error.
self.RP._generateAssertion(rp.origin, aIdentity, function gotAssertion(err, assertion) {
if (err) {
rp.doError(err);
return;
}
self.RP._doLogin(rp, rpLoginOptions, assertion);
self.RP._cleanUpProvisionFlow(aRPId, aProvId);
return;
});
});
});
});
},
// methods for chrome and add-ons
/**
* Discover the IdP for an identity
*
* @param aIdentity
* (string) the email we're logging in with
*
* @param aCallback
* (function) callback to invoke on completion
* with first-positional parameter the error.
*/
_discoverIdentityProvider: function _discoverIdentityProvider(aIdentity, aCallback) {
// XXX bug 767610 - validate email address call
// When that is available, we can remove this custom parser
var parsedEmail = this.parseEmail(aIdentity);
if (parsedEmail === null) {
return aCallback("Could not parse email: " + aIdentity);
}
log("_discoverIdentityProvider: identity:", aIdentity, "domain:", parsedEmail.domain);
this._fetchWellKnownFile(parsedEmail.domain, function fetchedWellKnown(err, idpParams) {
// idpParams includes the pk, authorization url, and
// provisioning url.
// XXX bug 769861 follow any authority delegations
// if no well-known at any point in the delegation
// fall back to browserid.org as IdP
return aCallback(err, idpParams);
});
},
/**
* Fetch the well-known file from the domain.
*
* @param aDomain
*
* @param aScheme
* (string) (optional) Protocol to use. Default is https.
* This is necessary because we are unable to test
* https.
*
* @param aCallback
*
*/
_fetchWellKnownFile: function _fetchWellKnownFile(aDomain, aCallback, aScheme='https') {
// XXX bug 769854 make tests https and remove aScheme option
let url = aScheme + '://' + aDomain + "/.well-known/browserid";
log("_fetchWellKnownFile:", url);
// this appears to be a more successful way to get at xmlhttprequest (which supposedly will close with a window
let req = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance(Ci.nsIXMLHttpRequest);
// XXX bug 769865 gracefully handle being off-line
// XXX bug 769866 decide on how to handle redirects
req.open("GET", url, true);
req.responseType = "json";
req.mozBackgroundRequest = true;
req.onload = function _fetchWellKnownFile_onload() {
if (req.status < 200 || req.status >= 400) {
log("_fetchWellKnownFile", url, ": server returned status:", req.status);
return aCallback("Error");
}
try {
let idpParams = req.response;
// Verify that the IdP returned a valid configuration
if (! (idpParams.provisioning &&
idpParams.authentication &&
idpParams['public-key'])) {
let errStr= "Invalid well-known file from: " + aDomain;
log("_fetchWellKnownFile:", errStr);
return aCallback(errStr);
}
let callbackObj = {
domain: aDomain,
idpParams: idpParams,
};
log("_fetchWellKnownFile result: ", callbackObj);
// Yay. Valid IdP configuration for the domain.
return aCallback(null, callbackObj);
} catch (err) {
reportError("_fetchWellKnownFile", "Bad configuration from", aDomain, err);
return aCallback(err.toString());
}
};
req.onerror = function _fetchWellKnownFile_onerror() {
log("_fetchWellKnownFile", "ERROR:", req.status, req.statusText);
log("ERROR: _fetchWellKnownFile:", err);
return aCallback("Error");
};
req.send(null);
},
};
let IdentityService = new IDService();