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Netflix-videos-downloader/pywidevine/decrypt/wvdecryptcustom.py
2021-09-01 02:57:54 +05:00

80 lines
2.1 KiB
Python

import logging
import subprocess
import re
import base64
from pywidevine.cdm import cdm, deviceconfig
class WvDecrypt(object):
WV_SYSTEM_ID = [
237,
239,
139,
169,
121,
214,
74,
206,
163,
200,
39,
220,
213,
29,
33,
237,
]
def __init__(self, init_data_b64, cert_data_b64, device):
self.init_data_b64 = init_data_b64
self.cert_data_b64 = cert_data_b64
self.device = device
self.cdm = cdm.Cdm()
def check_pssh(pssh_b64):
pssh = base64.b64decode(pssh_b64)
if not pssh[12:28] == bytes(self.WV_SYSTEM_ID):
new_pssh = bytearray([0, 0, 0])
new_pssh.append(32 + len(pssh))
new_pssh[4:] = bytearray(b"pssh")
new_pssh[8:] = [0, 0, 0, 0]
new_pssh[13:] = self.WV_SYSTEM_ID
new_pssh[29:] = [0, 0, 0, 0]
new_pssh[31] = len(pssh)
new_pssh[32:] = pssh
return base64.b64encode(new_pssh)
else:
return pssh_b64
self.session = self.cdm.open_session(
check_pssh(self.init_data_b64), deviceconfig.DeviceConfig(self.device)
)
if self.cert_data_b64:
self.cdm.set_service_certificate(self.session, self.cert_data_b64)
def log_message(self, msg):
return "{}".format(msg)
def start_process(self):
keyswvdecrypt = []
try:
for key in self.cdm.get_keys(self.session):
if key.type == "CONTENT":
keyswvdecrypt.append(
self.log_message("{}:{}".format(key.kid.hex(), key.key.hex()))
)
except Exception:
return False, keyswvdecrypt
return True, keyswvdecrypt
def get_challenge(self):
return self.cdm.get_license_request(self.session)
def update_license(self, license_b64):
self.cdm.provide_license(self.session, license_b64)
return True