! /usr/bin/python

import base64
from Crypto.Hash import SHA512
from Crypto.Signature import PKCS1_v1_5
from Crypto.PublicKey import RSA
import os
import time
import json
import urllib.request
import urllib.parse
import urllib.error
import http.client

applianceDomain = "YOURAPPLIANCE.COM"
apiURL = "https://"+applianceDomain+"/public/external/api"
privateKeyPath = "/path/to/PrivateKey-XXXXXXXXXXX.pem"
apptecAPIAuthToken = "7eXXXXXXXXXXXXXXXXXXXXXXXXXXXX20"

currentTimestamp = int(time.time())

# Get Devices
#requestData = {"api": "v2/device/listdevices", "time": currentTimestamp}

# Get Positions
#requestData = {"api": "v2/device/listposition", "time": currentTimestamp,
"params":{"ids":[26]}}

# Get AssetData
requestData = {"api": "v2/device/getassetdata", "time": currentTimestamp,
"params":{"ids":[26], "assetkeys": ["imei"]}}

# encode the request data to json
print(json.dumps(requestData, indent=1))
jsonEncodedRequestData = json.dumps(requestData)

# Sign the request data json with the API private key
message = jsonEncodedRequestData.encode('utf-8')
print("Body:", message)
digest = SHA512.new()
digest.update(message)

# Read private key from file
with open(privateKeyPath, "r") as myKeyFile:
private_key = RSA.importKey(myKeyFile.read())

# Load private key and sign message
signer = PKCS1_v1_5.new(private_key)
signatureOfRequestData = signer.sign(digest)
Base64EncodedSignature = base64.b64encode(
signatureOfRequestData).decode("utf-8")

headers = {"Content-type": "application/json",
"auth": apptecAPIAuthToken, "signature": Base64EncodedSignature}
print("Headers:", headers, "\n")

# Send request to Server
httpsClient = http.client.HTTPSConnection(applianceDomain, 443, timeout=10)
httpsClient.request("POST", apiURL, jsonEncodedRequestData, headers)

# Get answer
response = httpsClient.getresponse()
status = response.status
data = response.read()

if data == False:
print("Invalid answer from the server")
else:
print("Answer:")
print(json.dumps(json.loads(data), indent=1))
if status != 200:
print("http error: lastReceivedHttpCode")
print(status)