33 lines
939 B
JavaScript
33 lines
939 B
JavaScript
const pify = require('pify')
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const fs = pify(require('fs'))
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const hkdf = require('futoin-hkdf')
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const state = require('./state')
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const mnemonicHelpers = require('../mnemonic-helpers')
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const options = require('../options')
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function computeOperatorId (masterSeed) {
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return hkdf(masterSeed, 16, { salt: 'lamassu-server-salt', info: 'operator-id' }).toString('hex')
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}
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function getMnemonic () {
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if (state.mnemonic) return Promise.resolve(state.mnemonic)
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return fs.readFile(options.mnemonicPath, 'utf8').then(mnemonic => {
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state.mnemonic = mnemonic
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return mnemonic
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})
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}
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function findOperatorId (req, res, next) {
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return getMnemonic().then(mnemonic => {
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return computeOperatorId(mnemonicHelpers.toEntropyBuffer(mnemonic))
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}).then(id => {
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res.locals.operatorId = id
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return next()
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}).catch(e => {
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console.error('Error while computing operator id\n' + e)
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next(e)
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})
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}
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module.exports = findOperatorId
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