Node.js
Passintegration

Anmärkningar

Komma igång

Pass måste initieras med passport.initialize() mellanprogram. För att använda inloggningssessioner krävs passport.session() mellanprogram.

Observera att passport.serialize() och passport.deserializeUser() metoder måste definieras. Passport kommer att serialisera och deserialisera användarinställningar till och från sessionen

const express = require('express');
const session = require('express-session');
const passport = require('passport');
const cookieParser = require('cookie-parser');
const app = express();

// Required to read cookies
app.use(cookieParser());

passport.serializeUser(function(user, next) {
    // Serialize the user in the session
    next(null, user);
});

passport.deserializeUser(function(user, next) {
    // Use the previously serialized user
        next(null, user);
});

// Configuring express-session middleware
app.use(session({
    secret: 'The cake is a lie',
    resave: true,
    saveUninitialized: true
}));

// Initializing passport
app.use(passport.initialize());
app.use(passport.session());

// Starting express server on port 3000
app.listen(3000);

Lokal autentisering

Pass-lokal- modulen används för att implementera en lokal autentisering.

Den här modulen låter dig autentisera med ett användarnamn och lösenord i dina Node.js-applikationer.

Registrera användaren:

const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;

// A named strategy is used since two local strategy are used :
// one for the registration and the other to sign-in
passport.use('localSignup', new LocalStrategy({
    // Overriding defaults expected parameters,
    // which are 'username' and 'password'
    usernameField: 'email',
    passwordField: 'password',
    passReqToCallback: true // allows us to pass back the entire request to the callback    .
},
function(req, email, password, next) {
    // Check in database if user is already registered
    findUserByEmail(email, function(user) {
        // If email already exists, abort registration process and
        // pass 'false' to the callback
        if (user) return next(null, false);
        // Else, we create the user
        else {
            // Password must be hashed !
            let newUser = createUser(email, password);

            newUser.save(function() {
                // Pass the user to the callback
                return next(null, newUser);
            });
        }
    });
});

Loggar in i användaren:

const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;

passport.use('localSignin', new LocalStrategy({
    usernameField : 'email',
    passwordField : 'password',
},
function(email, password, next) {
    // Find the user
    findUserByEmail(email, function(user) {
        // If user is not found, abort signing in process
        // Custom messages can be provided in the verify callback
        // to give the user more details concerning the failed authentication
        if (!user) 
            return next(null, false, {message: 'This e-mail address is not associated with any account.'});
        // Else, we check if password is valid
        else {
            // If password is not correct, abort signing in process
            if (!isPasswordValid(password)) return next(null, false);
            // Else, pass the user to callback
            else return next(null, user);
        }
    });
});

Skapa rutter:

// ...
app.use(passport.initialize());
app.use(passport.session());

// Sign-in route
// Passport strategies are middlewares
app.post('/login', passport.authenticate('localSignin', {
    successRedirect: '/me',
    failureRedirect: '/login'
});

// Sign-up route
app.post('/register', passport.authenticate('localSignup', {
    successRedirect: '/',
    failureRedirect: '/signup'
});

// Call req.logout() to log out
app.get('/logout', function(req, res) {
    req.logout();
    res.redirect('/');
});

app.listen(3000);

Facebook-autentisering

Pass-facebook- modulen används för att implementera en Facebook- autentisering. I det här exemplet, om användaren inte existerar vid inloggning, skapas han.

Genomförande strategi:

const passport = require('passport');
const FacebookStrategy = require('passport-facebook').Strategy;

// Strategy is named 'facebook' by default
passport.use({
    clientID: 'yourclientid',
    clientSecret: 'yourclientsecret',
    callbackURL: '/auth/facebook/callback'
},
// Facebook will send a token and user's profile
function(token, refreshToken, profile, next) {
    // Check in database if user is already registered
    findUserByFacebookId(profile.id, function(user) {
        // If user exists, returns his data to callback
        if (user) return next(null, user);
        // Else, we create the user
        else {
            let newUser = createUserFromFacebook(profile, token);

            newUser.save(function() {
                // Pass the user to the callback
                return next(null, newUser);
            });
        }
    });
});

Skapa rutter:

// ...
app.use(passport.initialize());
app.use(passport.session());

// Authentication route
app.get('/auth/facebook', passport.authenticate('facebook', {
    // Ask Facebook for more permissions
    scope : 'email'
}));

// Called after Facebook has authenticated the user
app.get('/auth/facebook/callback',
    passport.authenticate('facebook', {
        successRedirect : '/me',
        failureRedirect : '/'
}));


//...

app.listen(3000);

Enkel användarnamn-lösenordsautentisering

I dina rutter / index.js

Här är user modellen för userSchema

router.post('/login', function(req, res, next) {
    if (!req.body.username || !req.body.password) {
        return res.status(400).json({
            message: 'Please fill out all fields'
        });
    }
    
    passport.authenticate('local', function(err, user, info) {
        if (err) {
            console.log("ERROR : " + err);
            return next(err);
        }

        if(user) (
            console.log("User Exists!")
            //All the data of the user can be accessed by user.x
            res.json({"success" : true});
            return;
        } else {
            res.json({"success" : false});
            console.log("Error" + errorResponse());
            return;
        }
    })(req, res, next);
});

Google Passport-autentisering

Vi har en enkel modul tillgänglig i npm för namn på passögon -google-oauth20 för skyddsglasögon

Tänk på följande exempel. I det här exemplet har du skapat en mapp, nämligen config med filen pass.js och google.js i rotkatalogen. I din app.js inkluderar följande

var express = require('express');
var session = require('express-session');
var passport = require('./config/passport'); // path where the passport file placed  
var app = express();
passport(app);

// annan kod för att initailisera servern, felhantering

I filen passport.js i konfigurationsmappen inkluderar följande kod

var passport = require  ('passport'),
google = require('./google'),
User = require('./../model/user'); // User is the  mongoose model

module.exports = function(app){
  app.use(passport.initialize());
  app.use(passport.session());
  passport.serializeUser(function(user, done){
      done(null, user);
  });
  passport.deserializeUser(function (user, done) {
     done(null, user);
  });
  google();
};

Följ följande i google.js-filen i samma konfigurationsmapp

var passport = require('passport'),
GoogleStrategy = require('passport-google-oauth20').Strategy,
User = require('./../model/user');
module.exports = function () {
passport.use(new GoogleStrategy({
        clientID: 'CLIENT ID',
        clientSecret: 'CLIENT SECRET',
        callbackURL: "http://localhost:3000/auth/google/callback"
    },
    function(accessToken, refreshToken, profile, cb) {
        User.findOne({ googleId : profile.id }, function (err, user) {
            if(err){
                return cb(err, false, {message : err});
            }else {
                if (user != '' && user != null) {
                    return cb(null, user, {message : "User "});
                } else {
                    var username  = profile.displayName.split(' ');
                    var userData = new User({
                        name : profile.displayName,
                        username : username[0],
                        password : username[0],
                        facebookId : '',
                        googleId : profile.id,
                    });
                    // send email to user just in case required to send the newly created
                    // credentails to user for future login without using google login
                    userData.save(function (err, newuser) {
                        if (err) {
                            return cb(null, false, {message : err + " !!! Please try again"});
                        }else{
                            return cb(null, newuser);
                        }
                    });
                }
            }
        });
      }
  ));
};

Här i detta exempel, om användaren inte är i DB, skapar du en ny användare i DB för lokal referens med fältnamnet googleId i användarmodell.