Passport Unique Token Strategy

!npm
!npm
!GitHub

Unique token authentication strategy for Passport.

Installation

``sh
npm install passport-unique-token
`

Usage

The unique token authentication strategy authenticates users with a unique token.
The strategy requires a _verify_ callback,
which accepts these credentials and calls done providing a user.

`javascript
const { UniqueTokenStrategy } = require('passport-unique-token');

passport.use(
new UniqueTokenStrategy((token, done) => {
User.findOne(
{
uniqueToken: token,
expireToken: { $gt: Date.now() },
},
(err, user) => {
if (err) {
return done(err);
}

if (!user) {
return done(null, false);
}

return done(null, user);
},
);
}),
);
`

By default passport-unique-token checks for token key credentials
in either the params url or request body in these locations:

| Type | Default property |
| ------ | :--------------: |
| Url | token |
| Body | token |
| Query | token |
| Header | token |

$3

These credential locations can be configured when defining the strategy as follows:

`javascript
const { UniqueTokenStrategy } = require('passport-unique-token');
const strategyOptions = {
tokenQuery: 'custom-token',
tokenParams: 'custom-token',
tokenField: 'custom-token',
tokenHeader: 'custom-token',
failOnMissing: false
};

passport.use(new UniqueTokenStrategy(strategyOptions,
(token, done) => {
User.findOne({
uniqueToken: token,
expireToken: { $gt: Date.now() }
}, (err, user) => {
if (err) {
return done(err);
}

if (!user) {
return done(null, false);
}

return done(null, user);
});
}
`

failOnMissing option allows you to queue multiple strategy, customizing the behavior.
By default it's set to true, when it's set to false
it lets move on to the next strategy on failure.

How to Authenticate

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

For example, as route middleware in an Express application:

`javascript
app.put('/animals/dogs', passport.authenticate('token'), (req, res) => {
// User authenticated and can be found in req.user
});
`

If authentication fails in the above example then a 401 response will be given.
However there may be times you wish a bit more control and delegate
the failure to your application:

`javascript
app.put('/animals/dogs', authenticate, (req, res) => {
// User authenticated and can be found in req.user
});

function authenticate(req, res, next) {
passport.authenticate('token', (err, user, info) => {
if (err) {
return next(err);
}

if (!user) {
res.status(401).json({ message: 'Incorrect token credentials' });
}

req.user = user;
next();
})(req, res, next);
}
`

Api Reference

- UniqueTokenStrategy()
- authenticate()

$3

The token authentication strategy authenticates requests based on the credentials
submitted through standard request headers, body, querystring or params.

`typescript
new UniqueTokenStrategy(
options?: {
// the token field name in the body request
tokenField?: string = 'token',
// the token field name in the query string request
tokenQuery?: string = 'token',
// the token field name in the param request
tokenParams?: string = 'token',
// the token field name in the header request
tokenHeader?: string = 'token',
// if true the express.Request is the first parameter of the verify callback
passReqToCallback?: false,
// if true the token key is case sensitive (e.g. res.body['uniqueToken'])
caseSensitive?: false,
// allows you to queue multiple strategy, customizing the behavior.
failOnMissing?: true
},
verify: (
req?: express.Request,
token: string,
done: (err: Error | null, user?: any, info?: any) => void
) => void
)
`

$3

You can optionally pass options to the authenticate() method.
Please refer to the passport documentation
for the different signature.

`typescript
authenticate(
strategyName: string,
options?: { badRequestMessage: string },
callback?: { err: Error, user: any, info: any }
);

// Example:

app.post('/login', passport.authenticate('token', {
badRequestMessage: 'custom error message'
}));
``

Credits

Luca Pau