v12.0.0 - initial commit

packages/server/lib/pairing.js

@@ -0,0 +1,84 @@
+const fs = require('fs')
+const pify = require('pify')
+const readFile = pify(fs.readFile)
+const db = require('./db')
+const logger = require('./logger')
+const uuid = require('uuid')
+
+const CA_PATH = process.env.CA_PATH
+
+// A machine on an older version (no multicassette code) could be paired with a server with multicassette code.
+// This makes sure that the server stores a default value
+const DEFAULT_NUMBER_OF_CASSETTES = 2
+const DEFAULT_NUMBER_OF_RECYCLERS = 0
+
+function pullToken(token) {
+  const sql = `delete from pairing_tokens
+    where token=$1
+    returning name, created < now() - interval '1 hour' as expired`
+  return db.one(sql, [token])
+}
+
+// TODO new-admin: We should remove all configs related to that device. This can get tricky.
+function unpair(deviceId) {
+  return db.tx(t =>
+    t
+      .none(
+        `INSERT INTO unpaired_devices(id, device_id, name, model, paired, unpaired)
+      SELECT $1, $2, d.name, d.model, d.created, now()
+      FROM devices d
+      WHERE device_id=$2`,
+        [uuid.v4(), deviceId],
+      )
+      .then(() => {
+        const q1 = t.none(`DELETE FROM devices WHERE device_id=$1`, [deviceId])
+        const q2 = t.none(`DELETE FROM machine_pings WHERE device_id=$1`, [
+          deviceId,
+        ])
+        const q3 = t.none(
+          `DELETE FROM machine_network_heartbeat WHERE device_id=$1`,
+          [deviceId],
+        )
+        const q4 = t.none(
+          `DELETE FROM machine_network_performance WHERE device_id=$1`,
+          [deviceId],
+        )
+        return t.batch([q1, q2, q3, q4])
+      }),
+  )
+}
+
+function pair(
+  token,
+  deviceId,
+  machineModel,
+  numOfCassettes = DEFAULT_NUMBER_OF_CASSETTES,
+  numOfRecyclers = DEFAULT_NUMBER_OF_RECYCLERS,
+) {
+  return pullToken(token)
+    .then(r => {
+      if (r.expired) return false
+
+      const insertSql = `insert into devices (device_id, name, number_of_cassettes, number_of_recyclers) values ($1, $2, $3, $4)
+    on conflict (device_id)
+    do update set paired=TRUE, display=TRUE`
+
+      return db
+        .none(insertSql, [deviceId, r.name, numOfCassettes, numOfRecyclers])
+        .then(() => true)
+    })
+    .catch(err => {
+      logger.debug(err)
+      return false
+    })
+}
+
+function authorizeCaDownload(caToken) {
+  return pullToken(caToken).then(r => {
+    if (r.expired) throw new Error('Expired')
+
+    return readFile(CA_PATH, { encoding: 'utf8' })
+  })
+}
+
+module.exports = { pair, unpair, authorizeCaDownload }