Node.js 模块之【passport】第三方【Github】鉴权（二）

1. 安装模块

npm i connect-mongo --save-dev
npm i passport --save-dev
npm i passport-github --save

2. 引入模块及其他依赖模块

var session = require('express-session');
var MongoStore = require('connect-mongo')(session);
var passport = require('passport');
var GithubStrategy = require('passport-github').Strategy;

3. 添加序列化与反序列化回调

passport.serializeUser(function(user, done) {
done(null, user.id);
});
passport.deserializeUser(function(id, done) {
UserModel.findById(id, function(err, user) {
done(err, user);
})
});

4. 添加Github鉴权策略

passport.use(new GithubStrategy({
clientID:'【Your ClientID】',
clientSecret:'【Your Secret】',
callbackURL:'【Your CallBack】'
},function(accessToken,refreshToken,profile,done) {
UserModel.findOne({
githubId: profile.id
}, function(err, user) {
if (err) {
return done(err);
} else {
if (!user) {
user = new UserModel({
githubId:profile.id,
username:profile.username
});
user.save();
return done(null, user);
}else{
return done(null, user);
}
}
});
}));

5. 使用connect-mongo保存

app.use(session({
resave: false,
saveUninitialized: true,
cookie: {
maxAge: 36000000 /*单位：毫秒*/
},
secret: "robin shop",
store: new MongoStore({
url:'mongodb://localhost/【Your MongoDB】'
})
}));

6. 封装权限检查中间件

var isAuthenticated = function(req, res, next) {
if (req.isAuthenticated() || (req.user && req.user.provider)) {
return next();
}
res.redirect('/login');
}

7. 设置Github登陆路由及其回调

app.get('/auth/github', passport.authenticate('github'));

app.get('/auth/github/callback', passport.authenticate('github', {
failureRedirect: '/login'
}), function(req, res) {
res.redirect('/users');
});

8. 登出销毁session

app.get('/logout', function(req, res) {
req.logout();
res.redirect('/login');
});

9. 权限限定

app.use('/users', isAuthenticated, users);
app.use('/products', isAuthenticated, products);
app.use('/upload', isAuthenticated, upload);