X-Git-Url: https://git.rvb.name/openhab-process.git/blobdiff_plain/254111f3712b8ac6dceeffe2518340e8ada36888..b0a27fd834d3d715bef0947357fe908c3cad5ad7:/mqtt-bt/scan-beacons

diff --git a/mqtt-bt/scan-beacons b/mqtt-bt/scan-beacons
index 747c295..4f2a01c 100644
--- a/mqtt-bt/scan-beacons
+++ b/mqtt-bt/scan-beacons
@@ -1,4 +1,72 @@
-#!/usr/bin/env lua
+#!/usr/bin/lua
+
+json = require("json")
+
+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
+    socket = require("socket")
+    posix = require("posix")
+    hostname = socket.dns.gethostname()
+    pid = posix.getpid()
+    mqtt_id="beaconmon-"..hostname.."-"..pid
+  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=="yes" then
+    capture("logger -t beaconmon "..str)
+  else 
+    print(str)  
+  end 
+end
 
 function run_command(cmd)
 
@@ -10,114 +78,144 @@ end
 
 function open_dump()
 
-  f = assert(io.popen ("hcidump --raw"))
-  run_command("kill `pgrep hcitool`")
-  run_command("hciconfig hci0 down")
-  run_command("hciconfig hci0 up")
-  f_null = assert(io.popen ("hcitool lescan --duplicates"))
+  run_command("/bin/kill `/usr/bin/pgrep btmon`")
+  run_command("/bin/kill `/usr/bin/pgrep hcitool`")
+  f = assert(io.popen ("/usr/bin/stdbuf -o0 /usr/bin/btmon"))
+  run_command("/usr/bin/hciconfig hci0 down")
+  run_command("/usr/bin/hciconfig hci0 up")
+  f_null = assert(io.popen ("/usr/bin/hcitool lescan --duplicates --passive"))
 
   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
+  return json.encode(o)
 end
 
 function trim(s)
   return (s:gsub("^%s*(.-)%s*$", "%1"))
 end
 
-function process_packet(packet)
+function mqtt_pub(path,value)
+  res=mqtt_client:publish(path,value)
+  printLog("Pub "..path.." "..value.." returned "..res);
+  return res
+end
 
-  bytes={}
-  idx=1
+function process_packet(packet)
 
-  if packet:len()>1 then
+  local mac
+  local uuid
+  local details
+  local type
+  local name
+
+  mac = packet['Address']
+  uuid = packet['uuid']
+  type = packet['Type']
+  name = packet['Name (complete)']
+
+  if type=='iBeacon' then
+    details=uuid
+  elseif name then
+    type="name"
+    details=name
+  else
+    type='unknown'
+    details=mac
+  end
 
-    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
-      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]
-	  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
-        print(string.format("{type:'ibeacon',mac:'%s',uuid:'%s',major:'%s',minor:'%s',power:%d,tx:%d}",mac,uuid,major,minor,power,tx))
-      else
-        print(dump(bytes))
-      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,dump(packet)) then
+      printLog('Reconnecting MQTT...')
+      mqtt_client:connect(mqtt_id)
     end
+
   end
 
 end
 
+function starts(String,Start)
+   return string.sub(String,1,string.len(Start))==Start
+end
+
+function split(inputstr, sep)
+        if sep == nil then
+                sep = "%s"
+        end
+        local t={} ; i=1
+        for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
+                t[i] = str
+                i = i + 1
+        end
+        return t
+end
+
 function read_loop()
 
-  packet = ""
+  packet={}
+  inbound=false
 
-  for line in inp:lines() do
+  while true do
 
-    lchr=line:sub(1,1)
-    line=trim(line)
+    str=inp:read("*l")
 
-    if lchr=="<" or lchr==">" then
-      line = trim(line:sub(2))
-    end
+    if str then 
 
-    if not (lchr == " ") then
-      process_packet(packet)
-      packet = ""
-    end
+      str=trim(str)
 
-    llen=line:len()
+      if inbound then
+        t = split(str,':')
+        if #t>=2 then
+          name=t[1]
+          value=trim(table.concat(t,':',2))
+          if name=="Address" then
+            value=split(value)[1]
+          end
+          packet[name]=value
+        end  
+      end  
 
-    if llen<59 then
-      packet = packet .. " " .. line
-      process_packet(packet)
-      packet=""
-    else
-      packet = packet .. " " .. line
-    end    
+      if starts(str,'> HCI Event: LE Meta Event (0x3e)') then
+        inbound=true
+      elseif starts(str,'RSSI:') then
+        inbound=false
+        process_packet(packet)
+        packet={}  
+      end
+      
+    end  
     
   end
 
 end
 
+io.stdout:setvbuf('no')
+io.stdin:setvbuf('no') 
+
+getConfig(arg[1])
+
+if mqtt_host then
+  MQTT = require "mosquitto"
+  mqtt_client = MQTT.new(mqtt_id)
+  if mqtt_user then
+    mqtt_client:login_set(mqtt_user, mqtt_passwd)
+  end
+  mqtt_client:connect(mqtt_host,mqtt_port)
+end
+
 inp = open_dump()
 
 read_loop()