moved l-a-s in here

lib/admin/pairing.js

@@ -0,0 +1,32 @@
+const fs = require('fs')
+const pify = require('pify')
+const readFile = pify(fs.readFile)
+const crypto = require('crypto')
+
+const options = require('../options')
+const db = require('../db')
+
+function unpair (deviceId) {
+  const sql = 'update devices set paired=FALSE where device_id=$1'
+
+  return db.none(sql, [deviceId])
+}
+
+function totem (hostname, name) {
+  const caPath = options.caPath
+
+  return readFile(caPath)
+  .then(data => {
+    const caHash = crypto.createHash('sha256').update(data).digest()
+    const token = crypto.randomBytes(32)
+    const hexToken = token.toString('hex')
+    const caHexToken = crypto.createHash('sha256').update(hexToken).digest('hex')
+    const buf = Buffer.concat([caHash, token, Buffer.from(hostname)])
+    const sql = 'insert into pairing_tokens (token, name) values ($1, $3), ($2, $3)'
+
+    return db.none(sql, [hexToken, caHexToken, name])
+    .then(() => buf.toString('base64'))
+  })
+}
+
+module.exports = {totem, unpair}