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import urllib.request
import datetime
import hashlib
import hmac
import json
import sys
from tqdm import tqdm
import requests
download_dir = "./"
updater_mode = "download"
class CorOS_Downloader:
firmware_version_lut = {
"2.0.1": "cIR97IrfvF4fKfO5_KIm_j_aP2zGiHp_",
}
def __init__(self, version, updatermode, download_dir):
self.firmwareVersion = self.firmware_version_lut[version]
self.download_dir = download_dir
self.updatermode = updatermode
config = json.load(open("config.json"))
self.access_key = config["access_key"]
self.secret_key = config["secret_key"]
self.host = config["host"]
self.stage = config["stage"]
self.endpoint = config["endpoint"]
self.firmwareType = config["firmwareType"]
self.filename = config["filename"]
@property
def url(self):
return "https://{}{}{}".format(self.host, self.stage, self.endpoint)
@property
def date(self):
return str(int((datetime.datetime.utcnow() - datetime.datetime(1970, 1, 1)).total_seconds()))
@property
def payload(self):
payload_dict = {
"deviceId": self.access_key,
"firmwareType": self.firmwareType,
"firmwareVersion": self.firmwareVersion
}
return json.dumps(payload_dict)
@property
def headers(self):
return 'content-type:application/json;host:{};x-cortex-date:{}'.format(self.host, self.date)
def sign_request(self):
string_to_sign = '{}\n{}\n{}\n{}\n{}'.format("POST", self.endpoint, "", hashlib.sha256(self.payload.encode("utf-8")).hexdigest(), self.headers)
return hmac.new(self.secret_key.encode('utf-8'), string_to_sign.encode('utf-8'), hashlib.sha256).hexdigest()
def build_authorization_header(self, signature):
return f'Key={self.access_key} Signature={signature}'
# Define the progress callback function
def _progress_callback(self, count, block_size, total_size):
if(count == 0):
self.progress_bar = tqdm(total=total_size, unit='B', unit_scale=True)
self.progress_bar.update(count * block_size - self.progress_bar.n)
if self.progress_bar.n >= total_size:
self.progress_bar.close()
def download_file(self, url, version_id):
file = f"{self.download_dir}/{self.filename}-{version_id}.bin" if self.filename else f"{self.download_dir}/{version_id}.bin"
urllib.request.urlretrieve(url, file, self._progress_callback)
def download_changelog(self, url):
file = '{}/changelog'.format(self.download_dir)
urllib.request.urlretrieve(url, file, self._progress_callback)
def check_update(self, output):
try:
parsed = json.loads(output)
url = parsed.get("url")
versionId = parsed.get("versionId")
message = parsed.get("message")
changelogUrl = parsed.get("changelogUrl")
if url:
print(f"New version available, versionId: {versionId}.")
print(f"url: {url}")
if changelogUrl:
print ("New changelog available")
print (f"changelogUrl: {changelogUrl}")
self.download_changelog(changelogUrl)
else:
print ("No new changelog found")
return True
else:
if message:
print("No new version available")
else:
print("Try again later, server seems to be busy")
return False
except:
print("An error occurred while trying to check for the latest version")
def updater_download(self, output):
try:
parsed = json.loads(output)
url = parsed.get("url")
versionId = parsed.get("versionId")
message = parsed.get("message")
if url:
response = urllib.request.urlopen(url)
size = response.getheader('Content-Length')
fname = open(f"{self.download_dir}/{'{}-{}.bin'.format(self.filename, versionId) if self.filename else '{}.bin'.format(versionId)}", "w+")
fname.write(f"{self.filename}-{versionId}.bin" if self.filename else f"{versionId}.bin")
fname.close()
print("Downloading new version, versionId: {}.".format(versionId))
self.download_file(url, versionId)
else:
if message:
print("No new version available")
else:
print("Try again later, server busy")
except:
print("An error occurred while trying to check for the latest version")
def initial_request(self):
if self.access_key is None or self.secret_key is None:
print('No api access key is available.')
sys.exit(1)
signature = self.sign_request()
authorization_header = self.build_authorization_header(signature)
headers = {
'content-type': 'application/json',
'host': self.host,
'x-cortex-date': self.date,
'authorization': authorization_header
}
response = requests.post(self.url, data=self.payload, headers=headers)
output = response.text
return output
def download(self):
initial_request = self.initial_request()
if self.updatermode == "check":
self.check_update(initial_request)
elif self.updatermode == "download":
self.updater_download(initial_request)
if __name__ == "__main__":
print("CorOS Downloader started")
downloader = CorOS_Downloader("2.0.1", updater_mode, download_dir)
downloader.download()
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