def addTransaction(self, devPublicKey, encryptedObj):
global gwPvt
global gwPub
t1 = time.time()
blk = chainFunctions.findBlock(devPublicKey)
if (blk != False and blk.index > 0):
devAESKey = findAESKey(devPublicKey)
if (devAESKey != False):
# plainObject contains [Signature + Time + Data]
plainObject = criptoFunctions.decryptAES(
encryptedObj, devAESKey)
signature = plainObject[:-20] # remove the last 20 chars
devTime = plainObject[-20:
-4] # remove the 16 char of timestamp
deviceData = plainObject[
-4:] # retrieve the las 4 chars which are the data
d = devTime + deviceData
isSigned = criptoFunctions.signVerify(d, signature,
devPublicKey)
if isSigned:
deviceInfo = DeviceInfo.DeviceInfo(signature, devTime,
deviceData)
nextInt = blk.transactions[len(blk.transactions) -
1].index + 1
signData = criptoFunctions.signInfo(gwPvt, str(deviceInfo))
gwTime = "{:.0f}".format(((time.time() * 1000) * 1000))
# code responsible to create the hash between Info nodes.
prevInfoHash = criptoFunctions.calculateTransactionHash(
chainFunctions.getLatestBlockTransaction(blk))
transaction = Transaction.Transaction(
nextInt, prevInfoHash, gwTime, deviceInfo, signData)
# send to consensus
#if not consensus(newBlockLedger, gwPub, devPublicKey):
# return "Not Approved"
chainFunctions.addBlockTransaction(blk, transaction)
logger.debug(
"block added locally... now sending to peers..")
t2 = time.time()
logger.debug(
"=====2=====>time to add transaction in a block: " +
'{0:.12f}'.format((t2 - t1) * 1000))
sendTransactionToPeers(
devPublicKey, transaction
) # --->> this function should be run in a different thread.
#print("all done")
return "ok!"
else:
return "Invalid Signature"
return "key not found"
def parse(self, stream):
self.stream = stream
in_bytes = bytearray(stream)
index = 0
# append packet to buffer
for idx in range(len(in_bytes)):
self.bytes.append(in_bytes[idx])
if len(self.bytes) < PACKET_LEN:
continue
# check packet validity at this index
if (
index + PACKET_LEN <= len(self.bytes)
and self.bytes[index] == IN_START1
and self.bytes[index + 1] == IN_START2
and self.bytes[index + PACKET_LEN - 1] == IN_END
):
# start parsing
# index+2 : category1, index+3 : category2, index+4 : ID, index+5 : command
# index+6~index+7 : Data1, index+8~index+9 : Data2, ..., index+12~index+13 : Data4
# index+14 : End byte
device_info = DeviceInfo()
device_info.itemtype = 1 # 0: queue item type
device_info.cat1 = int(self.bytes[index + 2]) # 1: cat1
device_info.cat2 = int(self.bytes[index + 3]) # 2: cat2
device_info.devid = int(self.bytes[index + 4]) # 3: device ID
device_info.cmd = int(self.bytes[index + 5]) # 4: command
# ping response
if device_info.cmd == CMD_PING:
# print ' Command : Ping response'
logging.warning("Command received : Ping response")
device_info.name = "User device" # name
device_info.loc = "NA" # location
device_info.time = int(time.time()) # timestamp
# pass to callback function
self.cmd_callback(device_info)
# empty buffer
self.bytes = list()
# register device
elif device_info.cmd == CMD_REGISTER:
# print ' Command : Register device'
logging.warning("Command received : Register device")
device_info.cmd1 = int(self.bytes[index + 6]) # 5: available cmd 1
device_info.cmd1dtype = int(self.bytes[index + 7]) # 6: available cmd 1 - data type
device_info.cmd2 = int(self.bytes[index + 8]) # 7:
device_info.cmd2dtype = int(self.bytes[index + 9]) # 8:
device_info.cmd3 = int(self.bytes[index + 10]) # 9:
device_info.cmd3dtype = int(self.bytes[index + 11]) # 10:
device_info.cmd4 = int(self.bytes[index + 12]) # 11: available cmd 4
device_info.cmd4dtype = int(self.bytes[index + 13]) # 12: available cmd 4 - data type
device_info.name = "User device" # 13: name
device_info.loc = "NA" # 14: location
device_info.time = int(time.time()) # 15: timestamp
# put in queue
self.recv_queue.put(device_info)
# empty buffer
self.bytes = list()
# update sensor value
elif device_info.cmd == CMD_UPDATE:
data1, data2, data3, data4 = 0x0000, 0x0000, 0x0000, 0x0000
# you have to check negative value
if self.bytes[index + 6] & 0x80 == 0x80:
data1 = int(self.bytes[index + 6] ^ 0xFF) << 8 | int(self.bytes[index + 7] ^ 0xFF)
data1 *= -1
else:
data1 = (int(self.bytes[index + 6]) << 8) | int(self.bytes[index + 7])
if self.bytes[index + 8] & 0x80 == 0x80:
data2 = int(self.bytes[index + 8] ^ 0xFF) << 8 | int(self.bytes[index + 9] ^ 0xFF)
data2 *= -1
else:
data2 = (int(self.bytes[index + 8]) << 8) | int(self.bytes[index + 9])
if self.bytes[index + 10] & 0x80 == 0x80:
data3 = int(self.bytes[index + 10] ^ 0xFF) << 8 | int(self.bytes[index + 11] ^ 0xFF)
data3 *= -1
else:
data3 = (int(self.bytes[index + 10]) << 8) | int(self.bytes[index + 11])
if self.bytes[index + 12] & 0x80 == 0x80:
data4 = int(self.bytes[index + 12] ^ 0xFF) << 8 | int(self.bytes[index + 13] ^ 0xFF)
data4 *= -1
else:
data4 = (int(self.bytes[index + 12]) << 8) | int(self.bytes[index + 13])
# print ' Command : Update sensor value (%d, %d, %d, %d)' % (data1, data2, data3, data4)
logging.warning(
"Command received : Update sensor value (%d, %d, %d, %d)" % (data1, data2, data3, data4)
)
device_info.data1 = data1 # 5: int data 1
device_info.data2 = data2 # 6: int data 2
device_info.data3 = data3 # 7: int data 3
device_info.data4 = data4 # 8: int data 4
device_info.name = "User device" # 13: name
device_info.loc = "NA" # 14: location
device_info.time = int(time.time()) # 15: timestamp
# put in queue
self.recv_queue.put(device_info)
# empty buffer
self.bytes = list()
# control signal response
elif device_info.cmd == CMD_CONTROL:
data1, data2, data3, data4 = 0x0000, 0x0000, 0x0000, 0x0000
# you have to check negative value
if self.bytes[index + 6] & 0x80 == 0x80:
data1 = int(self.bytes[index + 6] ^ 0xFF) << 8 | int(self.bytes[index + 7] ^ 0xFF)
data1 *= -1
else:
data1 = (int(self.bytes[index + 6]) << 8) | int(self.bytes[index + 7])
if self.bytes[index + 8] & 0x80 == 0x80:
data2 = int(self.bytes[index + 8] ^ 0xFF) << 8 | int(self.bytes[index + 9] ^ 0xFF)
data2 *= -1
else:
data2 = (int(self.bytes[index + 8]) << 8) | int(self.bytes[index + 9])
if self.bytes[index + 10] & 0x80 == 0x80:
data3 = int(self.bytes[index + 10] ^ 0xFF) << 8 | int(self.bytes[index + 11] ^ 0xFF)
data3 *= -1
else:
data3 = (int(self.bytes[index + 10]) << 8) | int(self.bytes[index + 11])
if self.bytes[index + 12] & 0x80 == 0x80:
data4 = int(self.bytes[index + 12] ^ 0xFF) << 8 | int(self.bytes[index + 13] ^ 0xFF)
data4 *= -1
else:
data4 = (int(self.bytes[index + 12]) << 8) | int(self.bytes[index + 13])
print " Command : result of control request (%d, %d, %d, %d)" % (data1, data2, data3, data4)
logging.warning("Command received : control result (%d, %d, %d, %d)" % (data1, data2, data3, data4))
device_info.data1 = data1 # int data 1
device_info.data2 = data2 # int data 2
device_info.data3 = data3 # int data 3
device_info.data4 = data4 # int data 4
device_info.name = "User device" # name
device_info.loc = "NA" # location
device_info.time = int(time.time()) # timestamp
# pass to callback function
self.cmd_callback(device_info)
# empty buffer
self.bytes = list()
else:
# print ' Undefined command !!'
logging.warning("Undefined command found!!")
# resize buffer
if len(self.bytes) > 0:
del self.bytes[0]
# End of parse function
return
def parse(self, stream):
self.stream = stream
in_bytes = bytearray(stream)
index = 0
# append packet to buffer
for idx in range(len(in_bytes)):
self.bytes.append(in_bytes[idx])
if len(self.bytes) < PACKET_LEN:
continue
# check packet validity at this index
if (index + PACKET_LEN <= len(self.bytes)
and self.bytes[index] == IN_START1
and self.bytes[index + 1] == IN_START2
and self.bytes[index + PACKET_LEN - 1] == IN_END):
# start parsing
# index+2 : category1, index+3 : category2, index+4 : ID, index+5 : command
# index+6~index+7 : Data1, index+8~index+9 : Data2, ..., index+12~index+13 : Data4
# index+14 : End byte
device_info = DeviceInfo()
device_info.itemtype = 1 # 0: queue item type
device_info.cat1 = int(self.bytes[index + 2]) # 1: cat1
device_info.cat2 = int(self.bytes[index + 3]) # 2: cat2
device_info.devid = int(self.bytes[index + 4]) # 3: device ID
device_info.cmd = int(self.bytes[index + 5]) # 4: command
# ping response
if device_info.cmd == CMD_PING:
#print ' Command : Ping response'
logging.warning('Command received : Ping response')
device_info.name = 'User device' # name
device_info.loc = 'NA' # location
device_info.time = int(time.time()) # timestamp
# pass to callback function
self.cmd_callback(device_info)
# empty buffer
self.bytes = list()
# register device
elif device_info.cmd == CMD_REGISTER:
#print ' Command : Register device'
logging.warning('Command received : Register device')
device_info.cmd1 = int(self.bytes[index +
6]) # 5: available cmd 1
device_info.cmd1dtype = int(
self.bytes[index +
7]) # 6: available cmd 1 - data type
device_info.cmd2 = int(self.bytes[index + 8]) # 7:
device_info.cmd2dtype = int(self.bytes[index + 9]) # 8:
device_info.cmd3 = int(self.bytes[index + 10]) # 9:
device_info.cmd3dtype = int(self.bytes[index + 11]) # 10:
device_info.cmd4 = int(
self.bytes[index + 12]) # 11: available cmd 4
device_info.cmd4dtype = int(
self.bytes[index +
13]) # 12: available cmd 4 - data type
device_info.name = 'User device' # 13: name
device_info.loc = 'NA' # 14: location
device_info.time = int(time.time()) # 15: timestamp
# put in queue
self.recv_queue.put(device_info)
# empty buffer
self.bytes = list()
# update sensor value
elif device_info.cmd == CMD_UPDATE:
data1, data2, data3, data4 = 0x0000, 0x0000, 0x0000, 0x0000
# you have to check negative value
if self.bytes[index + 6] & 0x80 == 0x80:
data1 = int(self.bytes[index + 6] ^ 0xff) << 8 | int(
self.bytes[index + 7] ^ 0xff)
data1 *= -1
else:
data1 = (int(self.bytes[index + 6]) << 8) | int(
self.bytes[index + 7])
if self.bytes[index + 8] & 0x80 == 0x80:
data2 = int(self.bytes[index + 8] ^ 0xff) << 8 | int(
self.bytes[index + 9] ^ 0xff)
data2 *= -1
else:
data2 = (int(self.bytes[index + 8]) << 8) | int(
self.bytes[index + 9])
if self.bytes[index + 10] & 0x80 == 0x80:
data3 = int(self.bytes[index + 10] ^ 0xff) << 8 | int(
self.bytes[index + 11] ^ 0xff)
data3 *= -1
else:
data3 = (int(self.bytes[index + 10]) << 8) | int(
self.bytes[index + 11])
if self.bytes[index + 12] & 0x80 == 0x80:
data4 = int(self.bytes[index + 12] ^ 0xff) << 8 | int(
self.bytes[index + 13] ^ 0xff)
data4 *= -1
else:
data4 = (int(self.bytes[index + 12]) << 8) | int(
self.bytes[index + 13])
#print ' Command : Update sensor value (%d, %d, %d, %d)' % (data1, data2, data3, data4)
logging.warning(
'Command received : Update sensor value (%d, %d, %d, %d)'
% (data1, data2, data3, data4))
device_info.data1 = data1 # 5: int data 1
device_info.data2 = data2 # 6: int data 2
device_info.data3 = data3 # 7: int data 3
device_info.data4 = data4 # 8: int data 4
device_info.name = 'User device' # 13: name
device_info.loc = 'NA' # 14: location
device_info.time = int(time.time()) # 15: timestamp
# put in queue
self.recv_queue.put(device_info)
# empty buffer
self.bytes = list()
# control signal response
elif device_info.cmd == CMD_CONTROL:
data1, data2, data3, data4 = 0x0000, 0x0000, 0x0000, 0x0000
# you have to check negative value
if self.bytes[index + 6] & 0x80 == 0x80:
data1 = int(self.bytes[index + 6] ^ 0xff) << 8 | int(
self.bytes[index + 7] ^ 0xff)
data1 *= -1
else:
data1 = (int(self.bytes[index + 6]) << 8) | int(
self.bytes[index + 7])
if self.bytes[index + 8] & 0x80 == 0x80:
data2 = int(self.bytes[index + 8] ^ 0xff) << 8 | int(
self.bytes[index + 9] ^ 0xff)
data2 *= -1
else:
data2 = (int(self.bytes[index + 8]) << 8) | int(
self.bytes[index + 9])
if self.bytes[index + 10] & 0x80 == 0x80:
data3 = int(self.bytes[index + 10] ^ 0xff) << 8 | int(
self.bytes[index + 11] ^ 0xff)
data3 *= -1
else:
data3 = (int(self.bytes[index + 10]) << 8) | int(
self.bytes[index + 11])
if self.bytes[index + 12] & 0x80 == 0x80:
data4 = int(self.bytes[index + 12] ^ 0xff) << 8 | int(
self.bytes[index + 13] ^ 0xff)
data4 *= -1
else:
data4 = (int(self.bytes[index + 12]) << 8) | int(
self.bytes[index + 13])
print ' Command : result of control request (%d, %d, %d, %d)' % (
data1, data2, data3, data4)
logging.warning(
'Command received : control result (%d, %d, %d, %d)' %
(data1, data2, data3, data4))
device_info.data1 = data1 # int data 1
device_info.data2 = data2 # int data 2
device_info.data3 = data3 # int data 3
device_info.data4 = data4 # int data 4
device_info.name = 'User device' # name
device_info.loc = 'NA' # location
device_info.time = int(time.time()) #timestamp
# pass to callback function
self.cmd_callback(device_info)
# empty buffer
self.bytes = list()
else:
#print ' Undefined command !!'
logging.warning('Undefined command found!!')
# resize buffer
if len(self.bytes) > 0:
del self.bytes[0]
# End of parse function
return
def load_devices(self):
results = self.db.select_all_device()
logging.warning('Load device info from DB: count = '+str(len(results)))
for row in results:
device_info = DeviceInfo()
device_info.objtype = 1 # queue item type
device_info.cat1 = int(row[1]) # cat1
device_info.cat2 = int(row[2]) # cat2
device_info.devid = int(row[3]) # device ID
device_info.cmd = 0x11 # command (set dummy value)
device_info.cmd1 = int(row[7]) # available cmd 1
device_info.cmd1dtype = int(row[11]) # available cmd 1 - data type
device_info.cmd2 = int(row[8])
device_info.cmd2dtype = int(row[12])
device_info.cmd3 = int(row[9])
device_info.cmd3dtype = int(row[13])
device_info.cmd4 = int(row[10]) # available cmd 4
device_info.cmd4dtype = int(row[14]) # available cmd 4 - data type
device_info.name = row[4] # name
device_info.loc = row[5] # location
device_info.time = int(row[6]) # timestamp
self.add_device_to_list(device_info)
return
def load_devices(self):
results = self.db.select_all_device()
logging.warning('Load device info from DB: count = ' +
str(len(results)))
for row in results:
device_info = DeviceInfo()
device_info.objtype = 1 # queue item type
device_info.cat1 = int(row[1]) # cat1
device_info.cat2 = int(row[2]) # cat2
device_info.devid = int(row[3]) # device ID
device_info.cmd = 0x11 # command (set dummy value)
device_info.cmd1 = int(row[7]) # available cmd 1
device_info.cmd1dtype = int(row[11]) # available cmd 1 - data type
device_info.cmd2 = int(row[8])
device_info.cmd2dtype = int(row[12])
device_info.cmd3 = int(row[9])
device_info.cmd3dtype = int(row[13])
device_info.cmd4 = int(row[10]) # available cmd 4
device_info.cmd4dtype = int(row[14]) # available cmd 4 - data type
device_info.name = row[4] # name
device_info.loc = row[5] # location
device_info.time = int(row[6]) # timestamp
self.add_device_to_list(device_info)
return
