mirror of
https://github.com/mbirth/tcl_ota_check.git
synced 2024-09-19 22:33:25 +01:00
95 lines
3.0 KiB
Python
95 lines
3.0 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""Generic file download request."""
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import binascii
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import hashlib
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import random
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import time
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import zlib
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from collections import OrderedDict
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from math import floor
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from .. import devices
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from .tclrequest import TclRequest
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from .tclresult import DownloadResult
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VDKEY_B64Z = b"eJwdjwEOwDAIAr8kKFr//7HhmqXp8AIIDrYAgg8byiUXrwRJRXja+d6iNxu0AhUooDCN9rd6rDLxmGIakUVWo3IGCTRWqCAt6X4jGEIUAxgN0eYWnp+LkpHQAg/PsO90ELsy0Npm/n2HbtPndFgGEV31R9OmT4O4nrddjc3Qt6nWscx7e+WRHq5UnOudtjw5skuV09pFhvmqnOEIs4ljPeel1wfLYUF4\n"
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def get_salt():
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"""Generate cryptographic salt."""
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millis = floor(time.time() * 1000)
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tail = "{:06d}".format(random.randint(0, 999999))
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return "{}{}".format(str(millis), tail)
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def get_vk2(params_dict, cltp):
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"""Generate salted hash of API parameters."""
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params_dict["cltp"] = cltp
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query = ""
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for key, val in params_dict.items():
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if query:
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query += "&"
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query += key + "=" + str(val)
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vdk = zlib.decompress(binascii.a2b_base64(VDKEY_B64Z))
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query += vdk.decode("utf-8")
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engine = hashlib.sha1()
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engine.update(bytes(query, "utf-8"))
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hexhash = engine.hexdigest()
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return hexhash
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class DownloadRequest(TclRequest):
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"""Generic file download request."""
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def __init__(self, device: devices.Device, tvver: str, fw_id: str):
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"""Populate variables."""
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super().__init__()
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self.uri = "/download_request.php"
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self.method = "POST"
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self.device = device
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self.tvver = tvver
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self.fw_id = fw_id
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def get_headers(self):
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"""Return request headers."""
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return {"User-Agent": self.device.uagent}
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def get_params(self):
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"""Return request parameters."""
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params = OrderedDict()
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params["id"] = self.device.imei
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params["salt"] = get_salt()
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params["curef"] = self.device.curef
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params["fv"] = self.device.fwver
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params["tv"] = self.tvver
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params["type"] = self.device.type
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params["fw_id"] = self.fw_id
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params["mode"] = self.device.mode
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params["vk"] = get_vk2(params, self.device.cltp)
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params["cltp"] = self.device.cltp
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params["cktp"] = self.device.cktp
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params["rtd"] = self.device.rtd
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if self.device.mode == self.device.MODE_STATES["FULL"]:
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params["foot"] = 1
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params["chnl"] = self.device.chnl
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return params
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def is_done(self, http_status: int, contents: str) -> bool:
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"""Handle request result."""
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if http_status == 200:
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self.response = contents
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self.result = DownloadResult(contents)
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self.success = True
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return True
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elif http_status not in [500, 502, 503]:
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# Errors OTHER than 500, 502 or 503 are probably
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# errors where we don't need to retry
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self.error = "HTTP {}".format(http_status)
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self.success = False
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return True
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return False
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