hapi-auth-jwt

hapi JSON Web Token (JWT) authentication plugin

JSON Web Token authentication requires verifying a signed token. The 'jwt' scheme takes the following options:

key - (required) The private key the token was signed with.
validateFunc - (optional) validation and user lookup function with the signature function(token, callback) where:
- token - the verified and decoded jwt token
- callback - a callback function with the signature function(err, isValid, credentials) where:
  - err - an internal error.
  - isValid - true if the token was valid otherwise false.
  - credentials - a credentials object passed back to the application in request.auth.credentials. Typically, credentials are only included when isValid is true, but there are cases when the application needs to know who tried to authenticate even when it fails (e.g. with authentication mode 'try').
audience (optional): string or array of strings of valid values for the aud field.
issuer (optional): string or array of strings of valid values for the iss field.
algorithms (optional): List of strings with the names of the allowed algorithms. For instance, ["HS256", "RS256"].
subject (optional): string of valid values for the sub field

See the example folder for an executable example.

var Hapi = require('hapi'),
    jwt = require('jsonwebtoken'),
    server = new Hapi.Server();

server.connection({ port: 8080 });


var accounts = {
    123: {
        id: 123,
        user: 'john',
        fullName: 'John Doe',
        scope: ['a', 'b']
    }
};


var privateKey = 'BbZJjyoXAdr8BUZuiKKARWimKfrSmQ6fv8kZ7OFfc';

// Use this token to build your request with the 'Authorization' header.  
// Ex:
//     Authorization: Bearer <token>
var token = jwt.sign({ accountId: 123 }, privateKey);


var validate = function (decodedToken, extraInfo, callback) {

    var error,
        credentials = accounts[decodedToken.accountId] || {};

    if (!credentials) {
        return callback(error, false, credentials);
    }

    return callback(error, true, credentials)
};


server.register(require('hapi-auth-jwt'), function (error) {

    server.auth.strategy('token', 'jwt', {
        key: privateKey,
        validateFunc: validate
    });

    server.route({
        method: 'GET',
        path: '/',
        config: {
            auth: 'token'
        }
    });

    // With scope requirements
    server.route({
        method: 'GET',
        path: '/withScope',
        config: {
            auth: {
                strategy: 'token',
                scope: ['a']
            }
        }
    });
});


server.start();

You can specify audience, issuer, algorithms and/or subject as well:

server.auth.strategy('token', 'jwt', {
    key: privateKey,
    validateFunc: validate,
    audience: 'http://myapi/protected',
    issuer: 'http://issuer',
    algorithms: ['RS256'],
    subject: 'myRequiredSubject'
});

License

joseluisdiaz/hapi-auth-jwt

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