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login.js
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login.js
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//
var fs = require('fs');
var yaml = require('yamljs');
var us = require('underscore');
var url = require('url');
var queryparser = require('querystring');
// For new stuff.
var express = require('express');
var session = require('express-session');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
///
/// Helpers.
///
function ll(arg1){
console.log('barista [' + (new Date()).toJSON() + ']: ', arg1);
}
function _die(message){
console.error('BARISTA [' + (new Date()).toJSON() + ']: ' + message);
process.exit(-1);
}
function _standard_response(res, code, type, body){
res.setHeader('Content-Type', type);
res.setHeader('Content-Length', body.length);
res.end(body);
return res;
}
function _extract_referer_query_field(req, field){
var ret = null;
if( req && req['headers'] && req['headers']['referer'] ){
console.log('referer', req['headers']['referer']);
var ref_url = req['headers']['referer'];
if( us.isString(ref_url) ){
var ref_query = url.parse(ref_url).query;
if( us.isString( ref_query ) ){
var parsed_query = queryparser.parse(ref_query);
if( parsed_query && parsed_query[field] ){
ret = parsed_query[field];
}
}
}
}
return ret;
}
function _response_redirect_to_success(res, ret_url, user_uri){
return res.redirect('/login/success?return=' + ret_url +
'&barista_token=' +
encodeURIComponent(user_uri));
}
///
/// Credential probing and processing.
///
// CLI handling.
var argv = require('minimist')(process.argv.slice(2));
var secloc = argv['x'] || argv['secrets'];
if( ! secloc ){
secloc = './secrets';
ll('Secrets location defaulting to: ' + secloc);
}
// Make sure secloc extant, etc.
var fstats = null;
try {
fstats = fs.statSync(secloc);
}catch(e){
_die('Option secrets location does not exist: ' + secloc);
}
if( ! fstats.isDirectory() ){
_die('Option (x|secrets) is not a directory: ' + secloc);
}else{
ll('Will use secrets directory at: ' + secloc);
}
///
/// Passport and strategy setup.
///
var passport = require('passport');
passport.serializeUser(function(user, done){
console.log('passport serializeUser: ', user);
done(null, user.id);
});
passport.deserializeUser(function(id, done) {
console.log('passport deserializeUser: ', id);
done(null, {'id': id});
// else done(err, null)
});
// Scan secloc for secrets at "<provider>.yaml". "local" is special,
// actually defining usernames and passwords keyed to user IDs.
var use_provider_local_p = false;
var use_provider_github_p = false;
var use_provider_google_plus_p = false;
var use_provider_orcid_p = false;
us.each(['local', 'google-plus', 'github', 'orcid'], function(provider){
var provider_path = secloc + '/' + provider + '.yaml';
var prov_stats = null;
try {
prov_stats = fs.statSync(provider_path);
}catch(e){
ll('Will not use provider: ' + provider);
}
if( prov_stats ){
ll('Will search for (' + provider + ') secrets at: ' + secloc);
if( ! prov_stats.isFile() ){
ll('Unable to read ' + provider +
' provider file at: ' + provider_path);
}else if( provider === 'local' ){
// Squeeze whatever we can out of the secrets files.
var local_secrets = {};
var local_secrets_list = yaml.load(provider_path);
us.each( local_secrets_list, function(local_secret){
if( us.isString(local_secret['uri']) &&
us.isString(local_secret['username']) &&
us.isString(local_secret['password']) ){
local_secrets[local_secret['username']] = local_secret;
}
});
// Local password strategy.
var LocalStrategy = require('passport-local').Strategy;
passport.use(new LocalStrategy({
passReqToCallback: true//,
//session: false
}, function(req, username, password, done) {
console.log("Start local auth...");
//console.log("Have req", req);
if( ! local_secrets[username] ){
console.log("Incorrect username: " + username);
return done(null, false, { message: 'Incorrect username.' });
}else if( password !== local_secrets[username]['password'] ){
console.log("Incorrect password: " + password);
return done(null, false, { message: 'Incorrect password.' });
}else{
console.log("TODO: Authenticated with URI: " +
local_secrets[username]['uri']);
return done(null, local_secrets[username]);
}
}));
// We're go.
use_provider_local_p = true;
}else if( provider === 'google-plus' ){
// Pick-up secrets file and check structure.
var google_secrets = yaml.load(provider_path);
console.log('secrets for ' + provider, google_secrets);
if( google_secrets['clientID'] &&
google_secrets['clientSecret'] &&
google_secrets['callbackURL'] ){
// Pass.
}else{
throw new Error(provider + ' not structured correctly!');
}
var GoogleStrategy = require('passport-google-oauth').OAuth2Strategy;
passport.use(new GoogleStrategy({
passReqToCallback: true,
session: false,
clientID: google_secrets['clientID'],
clientSecret: google_secrets['clientSecret'],
callbackURL: google_secrets['callbackURL']
}, function(req, accessToken, refreshToken, profile, done) {
console.log("Start auth...");
console.log(provider + ' callback profile id: ', profile['id']);
// Try and extract from sessioner using g+ id.
if( ! profile || ! us.isString(profile['id']) ){
return done(null, false, { message: 'Bad profile?' });
}else{
// Looks good.
// TODO: Try and use g+ id to extract sessioner session to
// ORCID.
// TODO: Through different fail if it cannot.
console.log("Authenticated");
return done(null, {"id": "TEMP:anonymous",
"uri": "TEMP:anonymous:" + profile['id'],
"displayName": "???"});
}
}));
// We're go.
use_provider_google_plus_p = true;
}else if( provider === 'github' ){
// TODO.
// Pick-up secrets file and check structure.
var github_secrets = yaml.load(provider_path);
console.log('secrets for ' + provider, github_secrets);
if( github_secrets['clientID'] &&
github_secrets['clientSecret'] &&
github_secrets['callbackURL'] ){
// Pass.
}else{
throw new Error(provider + ' not structured correctly!');
}
var GitHubStrategy = require('passport-github').Strategy;
passport.use(new GitHubStrategy({
passReqToCallback: true,
session: false,
clientID: github_secrets['clientID'],
clientSecret: github_secrets['clientSecret'],
callbackURL: github_secrets['callbackURL']
}, function(req, accessToken, refreshToken, profile, done) {
console.log("Start auth...");
//console.log(provider + ' callback profile: ', profile);
console.log(provider + ' callback profile id: ',
profile['username']);
// Try and extract from sessioner using github username.
if( ! profile || ! us.isString(profile['username']) ){
return done(null, false, { message: 'Bad profile?' });
}else{
// Looks good.
// TODO: Try and use github username to extract sessioner session to
// ORCID.
// TODO: Through different fail if it cannot.
console.log("Authenticated");
return done(null, {"id": "TEMP:anonymous",
"uri": "TEMP:anonymous:" + profile['username'],
"displayName": "???"});
}
}));
// We're go.
use_provider_github_p = true;
}else if( provider === 'orcid' ){
// WARNING: ORCID provides a somewhat standard OAuth2
// interface, but with quirks that need to be detected and
// dealt with.
// https://gist.github.com/JanKoppe/1491e37d1022c77a286087e6c81d6092#file-example-js-L5
// TODO.
// Pick-up secrets file and check structure.
var orcid_secrets = yaml.load(provider_path);
console.log('secrets for ' + provider, orcid_secrets);
if( orcid_secrets['clientID'] &&
orcid_secrets['clientSecret'] &&
orcid_secrets['callbackURL'] ){
// Pass.
}else{
throw new Error(provider + ' not structured correctly!');
}
var ORCIDStrategy = require('passport-oauth2').Strategy;
passport.use(new ORCIDStrategy({
passReqToCallback: true,
session: false,
authorizationURL: 'https://orcid.org/oauth/authorize',
tokenURL: 'https://pub.orcid.org/oauth/token',
scope: '/authenticate',
clientID: orcid_secrets['clientID'],
clientSecret: orcid_secrets['clientSecret'],
callbackURL: orcid_secrets['callbackURL']
}, function(req, accessToken, refreshToken, params, profile, done){
console.log("Start auth...");
//console.log(provider + ' callback profile: ', profile);
//console.log(provider + ' callback params: ', params);
// Try and extract from sessioner using orcid id.
if( ! params || ! us.isString(params['orcid']) ){
return done(null, false, { message: 'Bad profile?' });
}else{
// Looks good.
// TODO: Try and use github username to extract sessioner session to
// ORCID.
// TODO: Through different fail if it cannot.
console.log("Authenticated");
return done(null, {"id": "TEMP:anonymous",
"uri": "TEMP:anonymous:"+ params['orcid'],
"displayName": "???"});
}
}));
// We're go.
use_provider_orcid_p = true;
}else{
_die('Impossible to use provider: ' + provider);
}
}
});
//
//
//
var app = express();
// app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(session({
secret: 'keyboard cat',
resave: true,
saveUninitialized: true
}));
app.use(passport.initialize());
app.use(passport.session());
app.set('port', '8899');
//
//
//
app.use(cookieParser());
app.use(bodyParser());
app.use(session({
secret: 'keyboard cat',
resave: false,
saveUninitialized: false
}));
app.use(passport.initialize());
app.use(passport.session());
///
/// Shared routes.
///
// Nothing.
app.get('/', function(req, res){
return _standard_response(res, 200, 'text/html', 'home');
});
// Shared login page.
app.get('/login', function(req, res){
// Get return argument (originating URL) if there.
var ret = null;
if( req.query && req.query['return'] ){
ret = req.query['return'];
req.session.return = ret;
}
// TODO: Complain if nothing to return to.
var html = '';
if( ! ret ){
html = '<div>no place to return to :(</div>';
}else{
html = '<div>will return to "' + ret + '"</div>';
}
if( use_provider_local_p ){
html += '<div><p><a href="/auth/local?return=' + ret + '">Sign In Locally</a></p></div>';
}
if( use_provider_google_plus_p ){
html += '<div><p><a href="/auth/google?return=' + ret + '">Sign In with Google</a></p></div>';
}
if( use_provider_github_p ){
html += '<div><p><a href="/auth/github?return=' + ret + '">Sign In with GitHub</a></p></div>';
}
if( use_provider_orcid_p ){
html += '<div><p><a href="/auth/orcid?return=' + ret + '">Sign In with ORCID</a></p></div>';
}
return _standard_response(res, 200, 'text/html', html);
});
// Shared success, requiring return and token.
app.get('/login/success', function(req, res){
// Get return argument (originating URL) if there.
var ret = null;
if( req.query && req.query['return'] ){
ret = req.query['return'];
}
// Get return argument (originating URL) if there.
var tok = null;
if( req.query && req.query['barista_token'] ){
tok = req.query['barista_token'];
}
// TODO: Err if not both of those?
return _standard_response(res, 200, 'text/html', 'success: ' +
tok + ', ' + ret);
});
// General failure.
app.get('/login/failure', function(req, res){
return _standard_response(res, 200, 'text/html', 'failure');
});
///
/// Auth specific routes.
///
// Create local loop for local.
app.get('/auth/local', function(req, res){
// Get return argument (originating URL) if there.
var ret = null;
if( req.query && req.query['return'] ){
ret = req.query['return'];
}
console.log('/auth/local GET got "return": ' + ret);
// TODO: Err if nothing to return to?
return _standard_response(res, 200, 'text/html', '<form action="/auth/local/callback?return=' + ret + '" method="GET"><div><label>Username:</label><input type="text" name="username" /></div><div><label>Password:</label><input type="password" name="password" /></div><div><input type="submit" value="Log In" /></div></form>');
});
// Throw Google+.
app.get('/auth/google',
passport.authenticate(
'google',
{ scope: ['https://www.googleapis.com/auth/plus.login'] }
));
// Throw GitHub.
app.get('/auth/github', passport.authenticate('github'));
// Throw orcid/oauth2.
app.get('/auth/orcid', passport.authenticate('oauth2'));
// Generalized final step callback.
app.get('/auth/:method/callback', function(req, res, next) {
var method = req.params.method;
var method_title = method;
// The orcid/oauth2 thing is a special case.
if( method === 'orcid' ){
method = 'oauth2';
}
// Try and extract our return url by a couple of different
// methods.
// First, see if we stashed it in the session.
var ret = null;
if( req.session && us.isString(req.session['return']) ){
console.log('Recovered return URL from session.');
ret = req.session['return'];
req.session['return'] = null; // don't confuse ourselves later
}
// Fall back on trying to get return argument from the header
// referer.
if( ! ret ){
ret = _extract_referer_query_field(req, 'return');
if( ret ){
console.log('recovered return from session');
}
}
console.log('/auth/'+method_title+'/callback GET got "return": ' + ret);
// TODO: Err if nothing to return to? Or in the more likely case
// of losing my return in the middle, tell people to start again
// somewhere?
// Final redirections.
passport.authenticate(method, function(err, user, info){
if( err ){
console.log('"'+method_title+'" unknown error:', err);
return next(err);
}else if( ! user ){
console.log('"'+method_title+'" error: lack of user?', info);
return res.redirect('/login/failure');
}else{
// TODO: Real token get and register new session.
console.log('user', user);
return _response_redirect_to_success(res, ret, user['uri']);
}
})(req, res, next);
});
///
/// Spin up server.
///
app.listen(app.get('port'), function(){
console.log('Express server listening on port ' + app.get('port'));
});