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309 lines
10 KiB
JavaScript
309 lines
10 KiB
JavaScript
/* -*- js-indent-level: 2; indent-tabs-mode: nil -*- */
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/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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this.EXPORTED_SYMBOLS = ["IdentityService"];
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const Cu = Components.utils;
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const Ci = Components.interfaces;
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const Cc = Components.classes;
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const Cr = Components.results;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/identity/LogUtils.jsm");
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Cu.import("resource://gre/modules/identity/IdentityStore.jsm");
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Cu.import("resource://gre/modules/identity/RelyingParty.jsm");
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Cu.import("resource://gre/modules/identity/IdentityProvider.jsm");
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XPCOMUtils.defineLazyModuleGetter(this,
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"jwcrypto",
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"resource://gre/modules/identity/jwcrypto.jsm");
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function log(...aMessageArgs) {
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Logger.log.apply(Logger, ["core"].concat(aMessageArgs));
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}
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function reportError(...aMessageArgs) {
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Logger.reportError.apply(Logger, ["core"].concat(aMessageArgs));
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}
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function IDService() {
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Services.obs.addObserver(this, "quit-application-granted", false);
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Services.obs.addObserver(this, "identity-auth-complete", false);
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this._store = IdentityStore;
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this.RP = RelyingParty;
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this.IDP = IdentityProvider;
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}
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IDService.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports, Ci.nsIObserver]),
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observe: function observe(aSubject, aTopic, aData) {
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switch (aTopic) {
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case "quit-application-granted":
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Services.obs.removeObserver(this, "quit-application-granted");
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this.shutdown();
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break;
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case "identity-auth-complete":
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if (!aSubject || !aSubject.wrappedJSObject)
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break;
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let subject = aSubject.wrappedJSObject;
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log("Auth complete:", aSubject.wrappedJSObject);
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// We have authenticated in order to provision an identity.
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// So try again.
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this.selectIdentity(subject.rpId, subject.identity);
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break;
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}
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},
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reset: function reset() {
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// Explicitly call reset() on our RP and IDP classes.
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// This is here to make testing easier. When the
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// quit-application-granted signal is emitted, reset() will be
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// called here, on RP, on IDP, and on the store. So you don't
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// need to use this :)
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this._store.reset();
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this.RP.reset();
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this.IDP.reset();
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},
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shutdown: function shutdown() {
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log("shutdown");
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Services.obs.removeObserver(this, "identity-auth-complete");
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// try to prevent abort/crash during shutdown of mochitest-browser2...
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try {
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Services.obs.removeObserver(this, "quit-application-granted");
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} catch(e) {}
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},
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/**
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* Parse an email into username and domain if it is valid, else return null
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*/
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parseEmail: function parseEmail(email) {
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var match = email.match(/^([^@]+)@([^@^/]+.[a-z]+)$/);
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if (match) {
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return {
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username: match[1],
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domain: match[2]
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};
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}
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return null;
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},
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/**
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* The UX wants to add a new identity
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* often followed by selectIdentity()
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*
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* @param aIdentity
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* (string) the email chosen for login
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*/
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addIdentity: function addIdentity(aIdentity) {
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if (this._store.fetchIdentity(aIdentity) === null) {
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this._store.addIdentity(aIdentity, null, null);
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}
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},
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/**
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* The UX comes back and calls selectIdentity once the user has picked
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* an identity.
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*
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* @param aRPId
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* (integer) the id of the doc object obtained in .watch() and
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* passed to the UX component.
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*
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* @param aIdentity
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* (string) the email chosen for login
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*/
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selectIdentity: function selectIdentity(aRPId, aIdentity) {
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log("selectIdentity: RP id:", aRPId, "identity:", aIdentity);
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// Get the RP that was stored when watch() was invoked.
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let rp = this.RP._rpFlows[aRPId];
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if (!rp) {
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reportError("selectIdentity", "Invalid RP id: ", aRPId);
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return;
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}
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// It's possible that we are in the process of provisioning an
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// identity.
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let provId = rp.provId;
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let rpLoginOptions = {
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loggedInUser: aIdentity,
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origin: rp.origin
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};
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log("selectIdentity: provId:", provId, "origin:", rp.origin);
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// Once we have a cert, and once the user is authenticated with the
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// IdP, we can generate an assertion and deliver it to the doc.
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let self = this;
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this.RP._generateAssertion(rp.origin, aIdentity, function hadReadyAssertion(err, assertion) {
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if (!err && assertion) {
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self.RP._doLogin(rp, rpLoginOptions, assertion);
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return;
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}
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// Need to provision an identity first. Begin by discovering
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// the user's IdP.
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self._discoverIdentityProvider(aIdentity, function gotIDP(err, idpParams) {
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if (err) {
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rp.doError(err);
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return;
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}
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// The idpParams tell us where to go to provision and authenticate
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// the identity.
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self.IDP._provisionIdentity(aIdentity, idpParams, provId, function gotID(err, aProvId) {
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// Provision identity may have created a new provision flow
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// for us. To make it easier to relate provision flows with
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// RP callers, we cross index the two here.
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rp.provId = aProvId;
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self.IDP._provisionFlows[aProvId].rpId = aRPId;
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// At this point, we already have a cert. If the user is also
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// already authenticated with the IdP, then we can try again
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// to generate an assertion and login.
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if (err) {
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// We are not authenticated. If we have already tried to
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// authenticate and failed, then this is a "hard fail" and
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// we give up. Otherwise we try to authenticate with the
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// IdP.
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if (self.IDP._provisionFlows[aProvId].didAuthentication) {
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self.IDP._cleanUpProvisionFlow(aProvId);
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self.RP._cleanUpProvisionFlow(aRPId, aProvId);
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log("ERROR: selectIdentity: authentication hard fail");
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rp.doError("Authentication fail.");
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return;
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}
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// Try to authenticate with the IdP. Note that we do
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// not clean up the provision flow here. We will continue
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// to use it.
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self.IDP._doAuthentication(aProvId, idpParams);
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return;
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}
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// Provisioning flows end when a certificate has been registered.
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// Thus IdentityProvider's registerCertificate() cleans up the
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// current provisioning flow. We only do this here on error.
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self.RP._generateAssertion(rp.origin, aIdentity, function gotAssertion(err, assertion) {
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if (err) {
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rp.doError(err);
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return;
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}
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self.RP._doLogin(rp, rpLoginOptions, assertion);
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self.RP._cleanUpProvisionFlow(aRPId, aProvId);
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return;
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});
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});
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});
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});
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},
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// methods for chrome and add-ons
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/**
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* Discover the IdP for an identity
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*
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* @param aIdentity
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* (string) the email we're logging in with
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*
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* @param aCallback
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* (function) callback to invoke on completion
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* with first-positional parameter the error.
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*/
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_discoverIdentityProvider: function _discoverIdentityProvider(aIdentity, aCallback) {
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// XXX bug 767610 - validate email address call
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// When that is available, we can remove this custom parser
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var parsedEmail = this.parseEmail(aIdentity);
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if (parsedEmail === null) {
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return aCallback("Could not parse email: " + aIdentity);
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}
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log("_discoverIdentityProvider: identity:", aIdentity, "domain:", parsedEmail.domain);
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this._fetchWellKnownFile(parsedEmail.domain, function fetchedWellKnown(err, idpParams) {
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// idpParams includes the pk, authorization url, and
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// provisioning url.
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// XXX bug 769861 follow any authority delegations
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// if no well-known at any point in the delegation
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// fall back to browserid.org as IdP
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return aCallback(err, idpParams);
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});
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},
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/**
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* Fetch the well-known file from the domain.
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*
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* @param aDomain
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*
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* @param aScheme
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* (string) (optional) Protocol to use. Default is https.
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* This is necessary because we are unable to test
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* https.
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*
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* @param aCallback
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*
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*/
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_fetchWellKnownFile: function _fetchWellKnownFile(aDomain, aCallback, aScheme='https') {
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// XXX bug 769854 make tests https and remove aScheme option
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let url = aScheme + '://' + aDomain + "/.well-known/browserid";
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log("_fetchWellKnownFile:", url);
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// this appears to be a more successful way to get at xmlhttprequest (which supposedly will close with a window
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let req = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
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.createInstance(Ci.nsIXMLHttpRequest);
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// XXX bug 769865 gracefully handle being off-line
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// XXX bug 769866 decide on how to handle redirects
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req.open("GET", url, true);
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req.responseType = "json";
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req.mozBackgroundRequest = true;
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req.onload = function _fetchWellKnownFile_onload() {
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if (req.status < 200 || req.status >= 400) {
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log("_fetchWellKnownFile", url, ": server returned status:", req.status);
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return aCallback("Error");
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}
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try {
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let idpParams = req.response;
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// Verify that the IdP returned a valid configuration
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if (! (idpParams.provisioning &&
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idpParams.authentication &&
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idpParams['public-key'])) {
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let errStr= "Invalid well-known file from: " + aDomain;
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log("_fetchWellKnownFile:", errStr);
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return aCallback(errStr);
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}
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let callbackObj = {
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domain: aDomain,
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idpParams: idpParams,
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};
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log("_fetchWellKnownFile result: ", callbackObj);
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// Yay. Valid IdP configuration for the domain.
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return aCallback(null, callbackObj);
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} catch (err) {
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reportError("_fetchWellKnownFile", "Bad configuration from", aDomain, err);
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return aCallback(err.toString());
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}
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};
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req.onerror = function _fetchWellKnownFile_onerror() {
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log("_fetchWellKnownFile", "ERROR:", req.status, req.statusText);
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log("ERROR: _fetchWellKnownFile:", err);
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return aCallback("Error");
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};
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req.send(null);
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},
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};
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this.IdentityService = new IDService();
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