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55 lines
1.8 KiB
55 lines
1.8 KiB
/**
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* Passport initialization.
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*
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* Intializes Passport for incoming requests, allowing authentication strategies
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* to be applied.
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*
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* If sessions are being utilized, applications must set up Passport with
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* functions to serialize a user into and out of a session. For example, a
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* common pattern is to serialize just the user ID into the session (due to the
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* fact that it is desirable to store the minimum amount of data in a session).
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* When a subsequent request arrives for the session, the full User object can
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* be loaded from the database by ID.
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*
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* Note that additional middleware is required to persist login state, so we
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* must use the `connect.session()` middleware _before_ `passport.initialize()`.
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*
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* If sessions are being used, this middleware must be in use by the
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* Connect/Express application for Passport to operate. If the application is
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* entirely stateless (not using sessions), this middleware is not necessary,
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* but its use will not have any adverse impact.
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*
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* Examples:
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*
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* app.use(connect.cookieParser());
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* app.use(connect.session({ secret: 'keyboard cat' }));
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* app.use(passport.initialize());
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* app.use(passport.session());
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*
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* passport.serializeUser(function(user, done) {
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* done(null, user.id);
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* });
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*
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* passport.deserializeUser(function(id, done) {
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* User.findById(id, function (err, user) {
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* done(err, user);
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* });
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* });
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*
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* @return {Function}
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* @api public
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*/
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module.exports = function initialize(passport) {
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return function initialize(req, res, next) {
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req._passport = {};
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req._passport.instance = passport;
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if (req.session && req.session[passport._key]) {
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// load data from existing session
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req._passport.session = req.session[passport._key];
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}
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next();
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};
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};
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