Script to fetch Signa statistic from a HUAWEI CPE via console.

cpe_signal.rb

#!/usr/bin/env ruby

# I wrote this script to fetch signal information every 5 minutes and plot a graph based on RSRQ RSRP using Munin / MRTG
# HUAWEI if you don't like what I did please let me know I will remove this script pronto.
#
# Update BASE_URL with the correct IP of your CPE.

# Usage:
# ruby cpe_signal.rb
#
# will print something like this
# <?xml version="1.0" encoding="UTF-8"?>
# <response>
#   <pci>22</pci>
#   <sc></sc>
#   <cell_id>12345</cell_id>
#   <rsrq>-7dB</rsrq>
#   <rsrp>-76dbm</rsrp>
#   <rssi>&gt;=-51dBm</rssi>
#   <sinr></sinr>
#   <rscp></rscp>
#   <ecio></ecio>
#   <mode>7</mode>
# </response>

#!/usr/bin/env ruby

require 'net/http'
require 'uri'

BASE_URL = 'http://192.168.8.1'

def session_info
  uri = URI.parse(BASE_URL+'/html/index.html')

  @csrf_token ||= begin
    http = Net::HTTP.new(uri.host, uri.port)
    request = Net::HTTP::Get.new(uri.request_uri)
    response = http.request(request)

    csrf_token_regexp = /name=\"csrf_token\" content=\"(.*)\"/

    {
      csrf_token: response.body.match(csrf_token_regexp)[1],
      cookie: response['set-cookie'].split(/\;/)[0]
    }
  end
end

def signal_stats
  uri = URI.parse("#{BASE_URL}/api/device/signal")

  http = Net::HTTP.new(uri.host, uri.port)
  request = Net::HTTP::Get.new(uri.request_uri)
  request["Cookie"] = session_info[:cookie]
  request["__RequestVerificationToken"] = session_info[:csrf_token]

  response = http.request(request)

  response.body
end

puts signal_stats