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#!/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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mbirth /
tcl_ota_check
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