43 lines
1.0 KiB
JavaScript
43 lines
1.0 KiB
JavaScript
const crypto = require('crypto')
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const APP_VERSION = 'v0'
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function asyncRead (adapter, helper, storage) {
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return new Promise((resolve, reject) => {
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adapter.read(storage, (err, data) => {
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if (err) return reject(err)
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try {
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data = data.toString('utf-8')
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let result
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if ((result = helper.deserializeOpds1(data)) !== false) {
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resolve(result)
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} else {
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resolve(JSON.parse(data))
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}
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} catch (e) {
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reject(e)
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}
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})
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})
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}
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function generateToken ({ bytes, base }) {
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return new Promise((resolve, reject) => {
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crypto.randomBytes(bytes, (err, buf) => {
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if (err) reject(err)
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else resolve(buf.toString(base || 'base64'))
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})
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})
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}
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function hmacSign (secret, timestamp, body) {
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const value = `${APP_VERSION}:${timestamp}:${body}`
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const hmac = crypto.createHmac('sha256', secret.toString()).update(value, 'utf-8').digest('hex')
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return `${APP_VERSION}=${hmac}`
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}
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module.exports = {
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asyncRead,
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generateToken,
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hmacSign
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}
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