38 lines
1.5 KiB
JavaScript
38 lines
1.5 KiB
JavaScript
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/**
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* Example to refresh tokens using https://github.com/auth0/node-jsonwebtoken
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* It was requested to be introduced at as part of the jsonwebtoken library,
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* since we feel it does not add too much value but it will add code to mantain
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* we won't include it.
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*
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* I create this gist just to help those who want to auto-refresh JWTs.
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*/
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const jwt = require('jwt');
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function TokenGenerator (secretOrPrivateKey, secretOrPublicKey, options) {
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this.secretOrPrivateKey = secretOrPrivateKey;
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this.secretOrPublicKey = secretOrPublicKey;
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this.options = options; //algorithm + keyid + noTimestamp + expiresIn + notBefore
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}
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TokenGenerator.prototype.sign = function(payload, signOptions) {
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const jwtSignOptions = Object.assign({}, signOptions, this.options);
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return jwt.sign(payload, this.secretOrPrivateKey, jwtSignOptions);
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}
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// refreshOptions.verify = options you would use with verify function
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// refreshOptions.jwtid = contains the id for the new token
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TokenGenerator.prototype.refresh = function(token, refreshOptions) {
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const payload = jwt.verify(token, this.secretOrPrivateKey, refreshOptions.verify);
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delete payload.iat;
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delete payload.exp;
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delete payload.nbf;
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delete payload.jti; //We are generating a new token, if you are using jwtid during signing,
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const jwtSignOptions = Object.assign({ jwtid: refreshOptions.jwtid }, this.options);
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// The first signing converted all needed options into claims, they are already in the payload
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return jwt.sign(payload, this.secretOrPrivateKey, jwtSignOptions);
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}
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module.exports = TokenGenerator;
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