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   1 local ubus = require "ubus"
   2 local bit = require "bit"
   3
   4 local function get_wifi_interfaces() -- based on hostapd_stations.lua
   5   local u = ubus.connect()
   6   local status = u:call("network.wireless", "status", {})
   7   local interfaces = {}
   8
   9   for _, dev_table in pairs(status) do
  10     for _, intf in ipairs(dev_table['interfaces']) do
  11       table.insert(interfaces, intf['ifname'])
  12     end
  13   end
  14
  15   return interfaces
  16 end
  17
  18 local function scrape()
  19   local metric_hostapd_ubus_station_rrm_caps_link_measurement =
  20     metric("hostapd_ubus_station_rrm_caps_link_measurement", "gauge")
  21   local metric_hostapd_ubus_station_rrm_caps_neighbor_report =
  22     metric("hostapd_ubus_station_rrm_caps_neighbor_report", "gauge")
  23   local metric_hostapd_ubus_station_rrm_caps_beacon_report_passive =
  24     metric("hostapd_ubus_station_rrm_caps_beacon_report_passive", "gauge")
  25   local metric_hostapd_ubus_station_rrm_caps_beacon_report_active =
  26     metric("hostapd_ubus_station_rrm_caps_beacon_report_active", "gauge")
  27   local metric_hostapd_ubus_station_rrm_caps_beacon_report_table =
  28     metric("hostapd_ubus_station_rrm_caps_beacon_report_table", "gauge")
  29   local metric_hostapd_ubus_station_rrm_caps_lci_measurement =
  30     metric("hostapd_ubus_station_rrm_caps_lci_measurement", "gauge")
  31   local metric_hostapd_ubus_station_rrm_caps_ftm_range_report =
  32     metric("hostapd_ubus_station_rrm_caps_ftm_range_report", "gauge")
  33
  34   local function evaluate_metrics(ifname, freq, station, vals)
  35     local label_station = {
  36       ifname = ifname,
  37       freq = freq,
  38       station = station
  39     }
  40     local rrm_caps_link_measurement = bit.band(bit.lshift(1, 0), vals['rrm'][1]) > 0 and 1 or 0
  41     local rrm_caps_neighbor_report = bit.band(bit.lshift(1, 1), vals['rrm'][1]) > 0 and 1 or 0
  42     local rrm_caps_beacon_report_passive = bit.band(bit.lshift(1, 4), vals['rrm'][1]) > 0 and 1 or 0
  43     local rrm_caps_beacon_report_active = bit.band(bit.lshift(1, 5), vals['rrm'][1]) > 0 and 1 or 0
  44     local rrm_caps_beacon_report_table = bit.band(bit.lshift(1, 6), vals['rrm'][1]) > 0 and 1 or 0
  45     local rrm_caps_lci_measurement = bit.band(bit.lshift(1, 4), vals['rrm'][2]) > 0 and 1 or 0
  46     local rrm_caps_ftm_range_report = bit.band(bit.lshift(1, 2), vals['rrm'][5]) > 0 and 1 or 0
  47
  48     metric_hostapd_ubus_station_rrm_caps_link_measurement(label_station, rrm_caps_link_measurement)
  49     metric_hostapd_ubus_station_rrm_caps_neighbor_report(label_station, rrm_caps_neighbor_report)
  50     metric_hostapd_ubus_station_rrm_caps_beacon_report_passive(label_station, rrm_caps_beacon_report_passive)
  51     metric_hostapd_ubus_station_rrm_caps_beacon_report_active(label_station, rrm_caps_beacon_report_active)
  52     metric_hostapd_ubus_station_rrm_caps_beacon_report_table(label_station, rrm_caps_beacon_report_table)
  53
  54     metric_hostapd_ubus_station_rrm_caps_lci_measurement(label_station, rrm_caps_lci_measurement)
  55     metric_hostapd_ubus_station_rrm_caps_ftm_range_report(label_station, rrm_caps_ftm_range_report)
  56   end
  57
  58   for _, ifname in ipairs(get_wifi_interfaces()) do
  59     local u = ubus.connect()
  60     local clients_call = u:call("hostapd." .. ifname, "get_clients", {})
  61
  62     for client, client_table in pairs(clients_call['clients']) do
  63       evaluate_metrics(ifname,  clients_call['freq'], client, client_table)
  64     end
  65   end
  66 end
  67
  68 return { scrape = scrape }