#!/usr/bin/env lua
+function getConfig(configname)
+
+ local uci=require("uci")
+ local cur=uci.cursor()
+ local config
+ if configname then
+ config=configname
+ else
+ config="beacon"
+ end
+
+ logging = cur.get(config,"logging","enabled")
+
+ mqtt_host = cur.get(config,"mqtt","host")
+ mqtt_port = cur.get(config,"mqtt","port")
+ mqtt_id = cur.get(config,"mqtt","id")
+ mqtt_topic = cur.get(config,"mqtt","topic")
+
+ mqtt_user = cur.get(config,"mqtt","user")
+ mqtt_passwd = cur.get(config,"mqtt","password")
+
+ if mqtt_host and not mqtt_id then
+ mqtt_id="beaconmon"
+ end
+
+ if mqtt_host and not mqtt_port then
+ mqtt_port = 1883
+ end
+
+ if mqtt_host and not mqtt_topic then
+ mqtt_topic = 'beaconmon/{type}/{details}'
+ end
+
+end
+
+function capture(cmd, raw)
+ local f = assert(io.popen(cmd, 'r'))
+ local s = assert(f:read('*a'))
+ f:close()
+ if raw then return s end
+ s = string.gsub(s, '^%s+', '')
+ s = string.gsub(s, '%s+$', '')
+ s = string.gsub(s, '[\n\r]+', ' ')
+ return s
+end
+
+function mqtt_encode(str)
+ if (str) then
+ str = string.gsub (str, "\n", "")
+ str = string.gsub (str, "/", "-")
+ end
+ return str
+end
+
+function printLog(str)
+ if logging=="on" then
+ capture("logger -t beaconmon "..str)
+ else
+ print(str)
+ end
+end
+
function run_command(cmd)
local file = assert(io.popen(cmd, 'r'))
function process_packet(packet)
- bytes={}
- idx=1
+ local bytes={}
+ local idx=1
+ local len
+ local mac
+ local flags
+ local power
+ local tx
+ local type
+ local paysublen
+ local uuid
+ local major
+ local minor
+ local details
if packet:len()>1 then
flags=bytes[14]
power=tonumber("0x"..bytes[len-1])-256
tx=tonumber("0x"..bytes[len])-256
- j = 15
+ local j = 15
while j<len-2 do
paysublen=tonumber('0x'..bytes[j])
if bytes[j+1]=="FF" and bytes[j+2]=="4C" and bytes[j+3]=="00" and bytes[j+4]=="02" and bytes[j+5]=="15" then
-- Standard UUID iBeacon
type="ibeacon"
- uuid1=bytes[j+6]..bytes[j+7]..bytes[j+8]..bytes[j+9]
- uuid2=bytes[j+10]..bytes[j+11]
- uuid3=bytes[j+12]..bytes[j+13]
- uuid4=bytes[j+14]..bytes[j+15]
- uuid5=bytes[j+16]..bytes[j+17]..bytes[j+18]..bytes[j+19]..bytes[j+20]..bytes[j+21]
+ local uuid1=bytes[j+6]..bytes[j+7]..bytes[j+8]..bytes[j+9]
+ local uuid2=bytes[j+10]..bytes[j+11]
+ local uuid3=bytes[j+12]..bytes[j+13]
+ local uuid4=bytes[j+14]..bytes[j+15]
+ local uuid5=bytes[j+16]..bytes[j+17]..bytes[j+18]..bytes[j+19]..bytes[j+20]..bytes[j+21]
uuid=string.lower(uuid1..'-'..uuid2..'-'..uuid3..'-'..uuid4..'-'..uuid5)
major=bytes[j+23]..bytes[j+22]
minor=bytes[j+25]..bytes[j+24]
j=j+1+paysublen
end
if type=="ibeacon" then
- print(string.format("{type:'ibeacon',mac:'%s',uuid:'%s',major:'%s',minor:'%s',power:%d,tx:%d}",mac,uuid,major,minor,power,tx))
+ printLog(string.format("{type:'ibeacon',mac:'%s',uuid:'%s',major:'%s',minor:'%s',power:%d,tx:%d}",mac,uuid,major,minor,power,tx))
+ details=uuid..'/'..major..'/'..minor..'/'
else
- print(dump(bytes))
+ type='unknown'
+ details=dump(bytes)
+ printLog(details)
end
+ if mqtt_client then
+ mqtt_path=string.gsub(mqtt_topic,"{(.-)}",
+ function (name)
+ if name=="type" then
+ return mqtt_encode(type)
+ elseif name=="details" then
+ return mqtt_encode(details)
+ else
+ return '{'..name..'}'
+ end
+ end)
+ mqtt_client:publish(mqtt_path,tx)
+ end
end
end
end
-inp = open_dump()
+getConfig(arg[1])
+
+if mqtt_host then
+ MQTT = require "paho.mqtt"
+ mqtt_client = MQTT.client.create(mqtt_host, mqtt_port)
+ if mqtt_user then
+ mqtt_client:auth(mqtt_user, mqtt_passwd)
+ end
+ mqtt_client:connect(mqtt_id)
+end
+inp = open_dump()
read_loop()