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_C013_ESPEasyP2P.py
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_C013_ESPEasyP2P.py
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#!/usr/bin/env python3
#############################################################################
################## ESPEasy P2P controller for RPIEasy #######################
#############################################################################
#
# This controller is able to join ESPEasy P2P network, with auto registering
# itself, watching for Node advertisements, importing and exporting sensor
# data and information, and supports standard "sendto,unit" command scheme.
#
# Copyright (C) 2018-2019 by Alexander Nagy - https://bitekmindenhol.blog.hu/
#
import controller
import misc
import rpieGlobals
import time
import webserver
import commands
import Settings
import socket
import struct
import threading
try:
import linux_os as OS
except:
print("Linux OS function import error")
class Controller(controller.ControllerProto):
CONTROLLER_ID = 13
CONTROLLER_NAME = "ESPEasy P2P"
def __init__(self,controllerindex):
controller.ControllerProto.__init__(self,controllerindex)
self.usesID = False
self.onmsgcallbacksupported = False # use direct set_value() instead of generic callback to make sure that values setted anyway
self.controllerport = 65501
self.timer30s = True
self.bgproc = None
def controller_init(self,enablecontroller=None):
if enablecontroller != None:
self.enabled = enablecontroller
if self.enabled:
self.bgproc = threading.Thread(target=self.bgreceiver)
self.bgproc.daemon = True
self.bgproc.start()
# self.timer_thirty_second()
self.initialized = True
return True
def webform_load(self):
webserver.addFormNote("Hint: only the Controller Port parameter used!")
return True
def bgreceiver(self): # start with threading!
if self.enabled:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) # Make Socket Reusable
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1) # Allow incoming broadcasts
s.setblocking(False) # Set socket to non-blocking mode
s.bind(('',int(self.controllerport)))
# data =''
address = ''
dp = data_packet()
while self.enabled:
dp.clear()
try:
dp.buffer,address = s.recvfrom(10000)
except socket.error:
pass
else:
dp.decode()
if dp.pkgtype==1:
un = getunitordfromnum(dp.infopacket["unitno"]) # process incoming alive reports
if un==-1:
Settings.nodelist.append({"unitno":dp.infopacket["unitno"],"name":dp.infopacket["name"],"build":dp.infopacket["build"],"type":dp.infopacket["type"],"ip":dp.infopacket["ip"],"port":dp.infopacket["port"],"age":0})
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"New P2P unit discovered: "+str(dp.infopacket["unitno"])+" "+str(dp.infopacket["ip"])+" "+str(dp.infopacket["mac"]))
else:
Settings.nodelist[un]["age"] = 0
if int(dp.infopacket["unitno"]) != int(Settings.Settings["Unit"]):
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"Unit alive: "+str(dp.infopacket["unitno"]))
elif dp.pkgtype==3: # process incoming new devices
if int(Settings.Settings["Unit"])==int(dp.sensorinfo["dunit"]): # process only if we are the destination
rtaskindex = int(dp.sensorinfo["dti"])
if len(Settings.Tasks)<=rtaskindex or Settings.Tasks[rtaskindex]==False: # continue only if taskindex is empty
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"Sensorinfo arrived from unit "+str(dp.sensorinfo["sunit"]))
devtype = 33
for x in range(len(rpieGlobals.deviceselector)):
if int(rpieGlobals.deviceselector[x][1]) == int(dp.sensorinfo["dnum"]):
devtype = int(dp.sensorinfo["dnum"])
break
m = False
try:
for y in range(len(rpieGlobals.deviceselector)):
if int(rpieGlobals.deviceselector[y][1]) == devtype:
if len(Settings.Tasks)<=rtaskindex:
while len(Settings.Tasks)<=rtaskindex:
Settings.Tasks.append(False)
m = __import__(rpieGlobals.deviceselector[y][0])
break
except:
m = False
if m:
try:
Settings.Tasks[rtaskindex] = m.Plugin(rtaskindex)
except:
Settings.Tasks.append(m.Plugin(rtaskindex))
Settings.Tasks[rtaskindex].plugin_init(False)
Settings.Tasks[rtaskindex].remotefeed = True # Mark that this task accepts incoming data updates!
Settings.Tasks[rtaskindex].taskname = dp.sensorinfo["taskname"]
for v in range(4):
dp.sensorinfo["valuenames"].append("")
for v in range(Settings.Tasks[rtaskindex].valuecount):
Settings.Tasks[rtaskindex].valuenames[v] = dp.sensorinfo["valuenames"][v]
elif dp.pkgtype==5: # process incoming data
if int(Settings.Settings["Unit"])==int(dp.sensordata["dunit"]): # process only if we are the destination
rtaskindex = int(dp.sensordata["dti"])
if len(Settings.Tasks)>rtaskindex and Settings.Tasks[rtaskindex] and Settings.Tasks[rtaskindex].remotefeed: # continue only if taskindex exists and accepts incoming datas
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"Sensordata update arrived from unit "+str(dp.sensordata["sunit"]))
for v in range(Settings.Tasks[rtaskindex].valuecount):
Settings.Tasks[rtaskindex].set_value(v+1,dp.sensordata["values"][v],False)
Settings.Tasks[rtaskindex].plugin_senddata()
elif dp.pkgtype==0:
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"Command arrived from "+str(address))
cmdline = decodezerostr(dp.buffer)
commands.doExecuteCommand(cmdline,True)
time.sleep(0.01) # sleep to avoid 100% cpu usage
def udpsender(self,unitno,data,retrynum=1):
destip = ""
if unitno==255:
destip = "255.255.255.255"
else:
for n in Settings.nodelist:
if n["unitno"] == unitno:
destip = n["ip"]
break
if destip != "":
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
if unitno==255:
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
if type(data) is bytes:
dsend = data
elif type(data) is str:
dsend = bytes(data,"utf-8")
else:
dsend = bytes(data)
for r in range(retrynum):
s.sendto(dsend, (destip,int(self.controllerport)))
if r<retrynum-1:
time.sleep(0.1)
def senddata(self,idx,sensortype,value,userssi=-1,usebattery=-1,tasknum=-1,changedvalue=-1): # called by plugin
if tasknum!=-1 and self.enabled:
if tasknum<len(Settings.Tasks):
if Settings.Tasks[tasknum] != False:
if Settings.Tasks[tasknum].feedpublished == False:
dp2 = data_packet() # publish sensor info if not yet published
dp2.sensorinfo["sunit"] = Settings.Settings["Unit"]
dp2.sensorinfo["sti"] = tasknum
dp2.sensorinfo["dti"] = tasknum
dp2.sensorinfo["dnum"] = Settings.Tasks[tasknum].getpluginid()
dp2.sensorinfo["taskname"] = Settings.Tasks[tasknum].gettaskname()
for u in range(Settings.Tasks[tasknum].valuecount):
dp2.sensorinfo["valuenames"][u] = Settings.Tasks[tasknum].valuenames[u]
procarr = []
for n in Settings.nodelist: # send to all known nodes
if int(n["unitno"]) != int(Settings.Settings["Unit"]):
dp2.sensorinfo["dunit"] = n["unitno"]
dp2.encode(3)
# self.udpsender(n["unitno"],dp2.buffer,2)
t = threading.Thread(target=self.udpsender, args=(n["unitno"],dp2.buffer,2))
t.daemon = True
procarr.append(t)
t.start()
if len(procarr)>0:
for process in procarr:
process.join()
Settings.Tasks[tasknum].feedpublished = True # mark as published
dp2 = data_packet() # do actual data sending
dp2.sensordata["sunit"] = Settings.Settings["Unit"]
dp2.sensordata["sti"] = tasknum
dp2.sensordata["dti"] = tasknum
for u in range(Settings.Tasks[tasknum].valuecount):
dp2.sensordata["values"][u] = Settings.Tasks[tasknum].uservar[u]
procarr = []
for n in Settings.nodelist: # send to all known nodes
if int(n["unitno"]) != int(Settings.Settings["Unit"]):
dp2.sensordata["dunit"] = n["unitno"]
dp2.encode(5)
# self.udpsender(n["unitno"],dp2.buffer,2)
t = threading.Thread(target=self.udpsender, args=(n["unitno"],dp2.buffer,2))
t.daemon = True
procarr.append(t)
t.start()
if len(procarr)>0:
for process in procarr:
process.join()
def timer_thirty_second(self):
if self.enabled:
#send alive signals
dp = data_packet()
try:
defdev = Settings.NetMan.getprimarydevice()
except:
defdev = -1
if defdev != -1:
dp.infopacket["mac"] = Settings.NetworkDevices[defdev].mac
dp.infopacket["ip"] = Settings.NetworkDevices[defdev].ip
else:
dp.infopacket["mac"] = "00:00:00:00:00:00"
dp.infopacket["ip"] = ""
if dp.infopacket["ip"] == "":
dp.infopacket["ip"] = str(OS.get_ip())
dp.infopacket["unitno"] = int(Settings.Settings["Unit"])
dp.infopacket["build"] = int(rpieGlobals.BUILD)
dp.infopacket["name"] = Settings.Settings["Name"]
dp.infopacket["type"] = int(rpieGlobals.NODE_TYPE_ID_RPI_EASY_STD)
dp.infopacket["port"] = int(Settings.WebUIPort)
dp.encode(1)
self.udpsender(255,dp.buffer,1)
#clear old nodes
for n in range(len(Settings.nodelist)):
if Settings.nodelist[n]["age"] >= 10:
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"P2P unit disappeared: "+str(Settings.nodelist[n]["unitno"]))
del Settings.nodelist[n]
else:
Settings.nodelist[n]["age"] += 1
return True
class data_packet:
buffer = bytearray(255)
infopacket = {"mac":"","ip":"","unitno":-1,"build":0,"name":"","type":0,"port":80}
sensorinfo = {"sunit":0,"dunit":0,"sti":0,"dti":0,"dnum":0,"taskname":"","valuenames":["","","",""]}
sensordata = {"sunit":0,"dunit":0,"sti":0,"dti":0,"values":[0,0,0,0]}
pkgtype = 0
def __init__(self):
self.clear()
def clear(self):
self.buffer = bytearray(255)
self.infopacket["mac"] = ""
self.infopacket["ip"] = ""
self.infopacket["unitno"] = -1
self.infopacket["build"] = 0
self.infopacket["name"] = ""
self.infopacket["type"] = 0
self.infopacket["port"] = 80
self.sensorinfo["sunit"] = 0
self.sensorinfo["dunit"] = 0
self.sensordata["sunit"] = 0
self.sensordata["dunit"] = 0
self.pkgtype = 0
def encode(self,ptype):
self.pkgtype = ptype
if ptype == 1:
tbuf = [255,1]
ta = self.infopacket["mac"].split(":")
for m in ta:
tbuf.append(int(m,16))
ta = self.infopacket["ip"].split(".")
for m in ta:
tbuf.append(int(m))
tbuf.append(int(self.infopacket["unitno"]))
tbuf.append(int(self.infopacket["build"]%256))
tbuf.append(int(self.infopacket["build"]/256))
nl = len(self.infopacket["name"])
if nl>24:
nl = 24
for s in range(nl):
tbuf.append(ord(self.infopacket["name"][s]))
for p in range(s,24):
tbuf.append(0)
tbuf.append(int(self.infopacket["type"]))
tbuf.append(int(self.infopacket["port"]%256))
tbuf.append(int(self.infopacket["port"]/256))
for b in range(len(tbuf),80):
tbuf.append(0)
self.buffer = bytes(tbuf)
if ptype == 3:
tbuf = [255,3]
tbuf.append(int(self.sensorinfo["sunit"]))
tbuf.append(int(self.sensorinfo["dunit"]))
tbuf.append(int(self.sensorinfo["sti"]))
tbuf.append(int(self.sensorinfo["dti"]))
if self.sensorinfo["dnum"] > 255: # bytes can go 0-255
self.sensorinfo["dnum"] = 33
tbuf.append(int(self.sensorinfo["dnum"]))
sl = len(self.sensorinfo["taskname"])
if sl>25:
sl = 25
for s in range(sl):
tbuf.append(ord(self.sensorinfo["taskname"][s]))
for p in range(s,25):
tbuf.append(0)
for v in range(rpieGlobals.VARS_PER_TASK):
sl = len(self.sensorinfo["valuenames"][v])
if sl>25:
sl = 25
for s in range(sl):
tbuf.append(ord(self.sensorinfo["valuenames"][v][s]))
for p in range(s,25):
tbuf.append(0)
for b in range(len(tbuf),137):
tbuf.append(0)
self.buffer = bytes(tbuf)
if ptype == 5:
tbuf = [255,5]
tbuf.append(int(self.sensordata["sunit"]))
tbuf.append(int(self.sensordata["dunit"]))
tbuf.append(int(self.sensordata["sti"]))
tbuf.append(int(self.sensordata["dti"]))
tbuf.append(0) # Do not know why this 2 bytes necessarry...
tbuf.append(0)
for v in range(rpieGlobals.VARS_PER_TASK):
try:
val = float(self.sensordata["values"][v])
cvf = list(struct.pack("<f",val))# convert float to bytearray
except:
if type(self.sensordata["values"][v]) is str:
cvf = self.sensordata["values"][v][0:4] # strip string if needed
else:
cvf = list(self.sensordata["values"][v]) # do anything that we can..
cl = len(cvf)
if cl>4:
cl = 4
for c in range(cl):
tbuf.append(cvf[c])
self.buffer = bytes(tbuf)
def decode(self):
tbuffer = list(self.buffer)
self.pkgtype = 0
if tbuffer[0] == 255:
if tbuffer[1] == 1: # sysinfo len=80
self.pkgtype = 1
if len(self.buffer)>=41:
cdata = struct.unpack_from('<B B 6B 4B B H 25s B H',self.buffer)
else:
cdata = struct.unpack_from('<B B 6B 4B B',self.buffer)
array_alpha = cdata[2:8]
self.infopacket["mac"] = ':'.join('{:02x}'.format(x) for x in array_alpha).upper()
array_alpha = cdata[8:12]
self.infopacket["ip"] = '.'.join(str(int(x)) for x in array_alpha)
self.infopacket["unitno"] = int(cdata[12])
try:
self.infopacket["build"] = int(cdata[13])
self.infopacket["name"] = decodezerostr(cdata[14])
self.infopacket["type"] = int(cdata[15])
pport = int(cdata[16])
if pport not in [80,8008,8080]:
pport = 80
self.infopacket["port"] = pport
except:
pass
elif tbuffer[1] == 3: #sensor info min len=137
self.pkgtype = 3
if len(self.buffer)>162:
cdata = struct.unpack_from('<B B B B B B B 26s 26s 26s 26s 26s 26s',self.buffer)
else:
cdata = struct.unpack_from('<B B B B B B B 26s 26s 26s 26s 26s',self.buffer)
self.sensorinfo["sunit"] = int(cdata[2])
self.sensorinfo["dunit"] = int(cdata[3])
self.sensorinfo["sti"] = int(cdata[4])
self.sensorinfo["dti"] = int(cdata[5])
self.sensorinfo["dnum"] = int(cdata[6])
self.sensorinfo["taskname"] = decodezerostr(cdata[7])
self.sensorinfo["valuenames"] = []
for v in range(rpieGlobals.VARS_PER_TASK):
tvn = decodezerostr(cdata[8+v])
if tvn != "":
self.sensorinfo["valuenames"].append(tvn)
elif tbuffer[1] == 5: #sensor info min len=22
self.pkgtype = 5
cdata = struct.unpack_from('<8B 4f',self.buffer)
self.sensordata["sunit"] = int(cdata[2])
self.sensordata["dunit"] = int(cdata[3])
self.sensordata["sti"] = int(cdata[4])
self.sensordata["dti"] = int(cdata[5])
self.sensordata["values"] = []
for f in range(rpieGlobals.VARS_PER_TASK):
self.sensordata["values"].append(float(cdata[8+f]))
# Helper functions
def getunitordfromnum(unitno):
for n in range(len(Settings.nodelist)):
if int(Settings.nodelist[n]["unitno"]) == int(unitno):
return n
return -1
def decodezerostr(barr):
result = ""
for b in range(len(barr)):
if barr[b] == 0:
try:
result = barr[:b].decode("utf-8")
except:
result = str(barr[:b])
break
if b>=len(barr)-1:
try:
result = barr.decode("utf-8")
except:
result = str(barr)
return result.strip()