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var merge = require('utils-merge');
function SessionManager(options, serializeUser) {
if (typeof options == 'function') {
serializeUser = options;
options = undefined;
}
options = options || {};
this._key = options.key || 'passport';
this._serializeUser = serializeUser;
}
SessionManager.prototype.logIn = function(req, user, options, cb) {
if (typeof options == 'function') {
cb = options;
options = {};
}
options = options || {};
if (!req.session) { return cb(new Error('Login sessions require session support. Did you forget to use `express-session` middleware?')); }
var self = this;
var prevSession = req.session;
// regenerate the session, which is good practice to help
// guard against forms of session fixation
req.session.regenerate(function(err) {
if (err) {
return cb(err);
}
self._serializeUser(user, req, function(err, obj) {
if (err) {
return cb(err);
}
if (options.keepSessionInfo) {
merge(req.session, prevSession);
}
if (!req.session[self._key]) {
req.session[self._key] = {};
}
// store user information in session, typically a user id
req.session[self._key].user = obj;
// save the session before redirection to ensure page
// load does not happen before session is saved
req.session.save(function(err) {
if (err) {
return cb(err);
}
cb();
});
});
});
}
SessionManager.prototype.logOut = function(req, options, cb) {
if (typeof options == 'function') {
cb = options;
options = {};
}
options = options || {};
if (!req.session) { return cb(new Error('Login sessions require session support. Did you forget to use `express-session` middleware?')); }
var self = this;
// clear the user from the session object and save.
// this will ensure that re-using the old session id
// does not have a logged in user
if (req.session[this._key]) {
delete req.session[this._key].user;
}
var prevSession = req.session;
req.session.save(function(err) {
if (err) {
return cb(err)
}
// regenerate the session, which is good practice to help
// guard against forms of session fixation
req.session.regenerate(function(err) {
if (err) {
return cb(err);
}
if (options.keepSessionInfo) {
merge(req.session, prevSession);
}
cb();
});
});
}
module.exports = SessionManager;