X-Git-Url: https://git.rvb.name/openhab-process.git/blobdiff_plain/42721c09266f453dcc9d3af4c141b94fdd65c221..dd22f2616ea394af68b81ce1872e9c00db50bbbb:/mqtt-bt/scan-beacons

diff --git a/mqtt-bt/scan-beacons b/mqtt-bt/scan-beacons
new file mode 100644
index 0000000..34de7dc
--- /dev/null
+++ b/mqtt-bt/scan-beacons
@@ -0,0 +1,234 @@
+#!/usr/bin/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+$', '')
+  s = string.gsub(s, '[\n\r]+', ' ')
+  return s
+end
+
+function mqtt_encode(str)
+  if (str) then
+    str = string.gsub (str, "\n", "")
+    str = string.gsub (str, "/", "-")
+  end
+  return str	
+end
+
+function printLog(str)
+  if logging=="on" then
+    capture("logger -t beaconmon "..str)
+  else 
+    print(str)  
+  end 
+end
+
+function run_command(cmd)
+
+  local file = assert(io.popen(cmd, 'r'))
+  local output = file:read('*all')
+  file:close()
+
+end
+
+function open_dump()
+
+  run_command("/bin/kill `/usr/bin/pgrep hcidump`")
+  run_command("/bin/kill `/usr/bin/pgrep hcitool`")
+  f = assert(io.popen ("/usr/bin/hcidump --raw"))
+  run_command("/usr/bin/hciconfig hci0 down")
+  run_command("/usr/bin/hciconfig hci0 up")
+  f_null = assert(io.popen ("/usr/bin/hcitool lescan --duplicates"))
+
+  return f
+
+end
+
+function dump(o)
+   if type(o) == 'table' then
+      local s = '{ '
+      for k,v in pairs(o) do
+         if type(k) ~= 'number' then k = '"'..k..'"' end
+         s = s .. '['..k..'] = ' .. dump(v) .. ','
+--         s = s .. dump(v) .. ','
+      end
+      return s .. '} '
+   else
+      return tostring(o)
+   end
+end
+
+function trim(s)
+  return (s:gsub("^%s*(.-)%s*$", "%1"))
+end
+
+function mqtt_pub(path,value)
+  printLog("Pub "..path.." "..value)
+  return mqtt_client:publish(path,value)
+end
+
+function process_packet(packet)
+
+  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
+
+    while packet:len()>2 do
+      bytes[idx]=trim(packet:sub(1,3))
+      idx=idx+1
+      packet=packet:sub(4)
+    end
+    len = idx-1
+
+    if bytes[1]=='04' and bytes[2]=='3E' then
+      -- BLE Beacon?
+      type=""
+      mac=bytes[13]..':'..bytes[12]..':'..bytes[11]..':'..bytes[10]..':'..bytes[9]..':'..bytes[8]
+      flags=bytes[14]
+      power=tonumber("0x"..bytes[len-1])-256
+      tx=tonumber("0x"..bytes[len])-256
+      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"
+	  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]
+	end
+        j=j+1+paysublen
+      end
+      if type=="ibeacon" then
+        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
+        type='unknown'
+        details=dump(bytes)
+--        printLog(details)
+      end
+      if not (type=="unknown") 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)
+        
+        if not pcall(mqtt_pub,mqtt_path,tx) then
+          printLog('Reconnecting MQTT...')
+          mqtt_client:connect(mqtt_id)
+        end
+
+      end        
+    end
+  end
+
+end
+
+function read_loop()
+
+  packet = ""
+
+  for line in inp:lines() do
+
+    lchr=line:sub(1,1)
+    line=trim(line)
+
+    if lchr=="<" or lchr==">" then
+      line = trim(line:sub(2))
+    end
+
+    if not (lchr == " ") then
+      process_packet(packet)
+      packet = ""
+    end
+
+    llen=line:len()
+
+    if llen<59 then
+      packet = packet .. " " .. line
+      process_packet(packet)
+      packet=""
+    else
+      packet = packet .. " " .. line
+    end    
+    
+  end
+
+end
+
+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()