add WIP draft for talking to Teltonika RUT950.

backend/lib/rut950.mjs

@@ -0,0 +1,82 @@
+import JsonRpc from 'node-jsonrpc-client'
+import esMain from 'es-main'
+
+const DEFAULT_OPTS = {
+  url: process.env.RUT950_UBUS_URL || 'http://192.168.1.1/ubus',
+  username: process.env.RUT950_USERNAME || 'admin',
+  password: process.env.RUT950_PASSWORD || 'admin01'
+}
+
+const EMPTY_SESSID = '00000000000000000000000000000000'
+
+export class Rut950 {
+  constructor (opts = {}) {
+    opts = { ...DEFAULT_OPTS, ...opts }
+    this.client = new JsonRpc(opts.url)
+    this.opts = opts
+  }
+
+  async init () {
+    const res = await this.client.call('call', [
+      EMPTY_SESSID,
+      'session',
+      'login',
+      {
+        username: this.opts.username,
+        password: this.opts.password
+      }
+    ])
+    if (!res.result || !res.result.length === 2) {
+      throw new Error('received invalid response')
+    }
+    const [code, data] = res.result
+    this.sessid = data.ubus_rpc_session
+  }
+
+  async call (...params) {
+    if (!this.sessid) await this.init()
+    const res = await this.client.call('call', [
+      this.sessid,
+      ...params
+    ])
+    console.log(res)
+    if (res.error) {
+      const err = new Error('RUT950 error: ' + res.error.message)
+      err.code = res.error.code
+      throw err
+    }
+    const result = res.result
+    if (!result || !result.length === 2 || result[0] !== 0) {
+      throw new Error('received invalid response')
+    }
+    return res.result[1]
+  }
+}
+
+if (esMain(import.meta)) {
+  const rut = new Rut950()
+  let iwinfo = await rut.call('iwinfo', 'info', { device: 'wlan0' })
+  console.log('IWINFO', iwinfo)
+  //let uci = await rut.call('uci', 'show')
+  let uci = await rut.call('file', 'exec', {
+    command: 'uci',
+    params: ['show']
+  })
+  const res = uci.stdout
+  const data = {}
+  const lines = res.split('\n')
+  for (const line of lines) {
+    const [key, value] = line.split('=')
+    data[key] = value
+    //const keyParts = key.split('.')
+    //let part = data
+    //let last = keyParts.pop()
+    //console.log(keyParts, last, value)
+    //for (const keyPart of keyParts) {
+    //  if (!part[keyPart]) part[keyPart] = {}
+    //  part = part[keyPart]
+    //}
+  }
+  console.log('UCI', data)
+  //console.log('UCI', JSON.stringify(uci))
+}