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Showing content from https://github.com/jaredhanson/passport-local below:

jaredhanson/passport-local: Username and password authentication strategy for Passport and Node.js.

Passport strategy for authenticating with a username and password.

This module lets you authenticate using a username and password in your Node.js applications. By plugging into Passport, password-based sign in can be easily and unobtrusively integrated into any application or framework that supports Connect-style middleware, including Express.

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$ npm install passport-local

The local authentication strategy authenticates users using a username and password. The strategy requires a verify callback, which accepts these credentials and calls done providing a user.

passport.use(new LocalStrategy(
  function(username, password, done) {
    User.findOne({ username: username }, function (err, user) {
      if (err) { return done(err); }
      if (!user) { return done(null, false); }
      if (!user.verifyPassword(password)) { return done(null, false); }
      return done(null, user);
    });
  }
));

This strategy takes an optional options hash before the function, e.g. new LocalStrategy({/* options */, callback}).

The available options are:

• usernameField - Optional, defaults to 'username'
• passwordField - Optional, defaults to 'password'

Both fields define the name of the properties in the POST body that are sent to the server.

By default, LocalStrategy expects to find credentials in parameters named username and password. If your site prefers to name these fields differently, options are available to change the defaults.

passport.use(new LocalStrategy({
    usernameField: 'email',
    passwordField: 'passwd',
    session: false
  },
  function(username, password, done) {
    // ...
  }
));

When session support is not necessary, it can be safely disabled by setting the session option to false.

The verify callback can be supplied with the request object by setting the passReqToCallback option to true, and changing callback arguments accordingly.

passport.use(new LocalStrategy({
    usernameField: 'email',
    passwordField: 'passwd',
    passReqToCallback: true,
    session: false
  },
  function(req, username, password, done) {
    // request object is now first argument
    // ...
  }
));

Use passport.authenticate(), specifying the 'local' strategy, to authenticate requests.

For example, as route middleware in an Express application:

app.post('/login', 
  passport.authenticate('local', { failureRedirect: '/login' }),
  function(req, res) {
    res.redirect('/');
  });

• express-4.x-local-example

  Illustrates how to use the password strategy within an Express application.

Additional examples can be found on the wiki.

The MIT License

Copyright (c) 2011-2015 Jared Hanson <http://jaredhanson.net/>

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