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getTokenData URL-safe base64 encoding and missing padding #169

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Merged
purplecabbage merged 1 commit into from
Nov 7, 2025
Merged

getTokenData URL-safe base64 encoding and missing padding #169

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7 changes: 6 additions & 1 deletion src/ims.js
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Original file line number Diff line number Diff line change
Expand Up @@ -211,10 +211,15 @@ async function _toTokenResult (apiResponse) {
*
* @param {string} token The token to decode and extract the token value from
* @returns {object} The decoded token payload data without header and signature
* @throws {Error} If the token is invalid or cannot be decoded
*/
function getTokenData (token) {
const [, payload] = token.split('.', 3)
return JSON.parse(Buffer.from(payload, 'base64'))
const base64 = payload.replace(/-/g, '+').replace(/_/g, '/')
// add padding if necessary
const padded = base64 + '='.repeat((4 - (base64.length % 4)) % 4)
const decoded = Buffer.from(padded, 'base64').toString('utf-8')
return JSON.parse(decoded)
}

/**
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