WIP

lib/pair.js

@@ -0,0 +1,45 @@
+const fs = require('fs')
+const pify = require('pify')
+const readFile = pify(fs.readFile)
+const path = require('path')
+const crypto = require('crypto')
+const db = require('./db')
+
+const CA_PATH = path.resolve(__dirname, '..', 'ca-cert.pem')
+
+function totem (ipAddress) {
+  return readFile(CA_PATH)
+  .then(data => {
+    const caHash = crypto.createHash('sha256').update(data).digest()
+    const token = crypto.randomBytes(32)
+    const ip = Buffer.from(ipAddress.split('.').map(s => parseInt(s, 10)))
+    const buf = Buffer.concat([ip, caHash, token])
+    const sql = 'insert into pairing_tokens (token) values ($1)'
+
+    return db.none(sql, [token.toString('hex')])
+    .then(() => buf.toString('base64'))
+  })
+}
+
+function pair (token, deviceId) {
+  const sql = `delete from pairing_tokens
+    where token=$1
+    returning created < now() - interval '1 hour' as expired`
+  return db.one(sql, [token])
+  .then(r => {
+    if (r.expired) return false
+
+    const pairSql = 'insert into paired_devices (device_id) values ($1)'
+    return db.none(pairSql, [deviceId])
+    .then(() => true)
+  })
+}
+
+function isPaired (deviceId) {
+  const sql = 'select device_id from paired_devices where device_id=$1'
+
+  return db.one(sql, [deviceId])
+  .then(() => true)
+}
+
+module.exports = {totem, pair, isPaired}