Updated

pywidevine/decrypt/wvdecrypt.py

@@ -0,0 +1,46 @@
+import logging
+import subprocess
+import re
+from tqdm import tqdm
+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, PSSH):
+        self.logger = logging.getLogger(__name__)
+        self.wvdecrypt_process = None
+        self.pssh = PSSH
+        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.pssh),
+                              deviceconfig.DeviceConfig(deviceconfig.device_chromecdm_1610))
+    
+    def start_process(self):
+        keysR = self.cdm.get_keys(self.session)
+        return keysR
+
+    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
+

pywidevine/decrypt/wvdecryptconfig.py

@@ -0,0 +1,57 @@
+import pywidevine.downloader.wvdownloaderconfig as wvdl_cfg
+import subprocess
+
+class WvDecryptConfig(object):
+    def __init__(self, filename, tracktype, trackno, license, init_data_b64, cert_data_b64=None):
+        self.filename = filename
+        self.tracktype = tracktype
+        self.trackno = trackno
+        self.init_data_b64 = init_data_b64
+        self.license = license
+        if cert_data_b64 is not None:
+            self.server_cert_required = True
+            self.cert_data_b64 = cert_data_b64
+        else:
+            self.server_cert_required = False
+
+    def get_filename(self, unformatted_filename):
+        return unformatted_filename.format(filename=self.filename, track_type=self.tracktype, track_no=self.trackno)
+
+
+    def find_str(self, s, char):
+        index = 0
+        if char in s:
+            c = char[0]
+            for ch in s:
+                if ch == c and s[index:index + len(char)] == char:
+                    return index
+                index += 1
+        return -1
+        
+    def get_kid(self, filename):
+        mp4dump = subprocess.Popen([wvdl_cfg.MP4DUMP_BINARY_PATH, filename], stdout=subprocess.PIPE)
+        mp4dump = str(mp4dump.stdout.read())
+        A = self.find_str(mp4dump, 'default_KID')
+        KID = mp4dump[A:A + 63].replace('default_KID = ', '').replace('[', '').replace(']', '').replace(' ', '')
+        KID = KID.upper()
+        KID_video = KID[0:8] + '-' + KID[8:12] + '-' + KID[12:16] + '-' + KID[16:20] + '-' + KID[20:32]
+        if KID == '':
+                KID = 'nothing'
+        return KID.lower()
+
+    def build_commandline_list(self, keys):
+        
+        KID_file = self.get_kid(self.get_filename(wvdl_cfg.ENCRYPTED_FILENAME))
+        print(KID_file)
+        
+        commandline = [wvdl_cfg.MP4DECRYPT_BINARY_PATH]
+        for key in keys:
+            if key.type == 'CONTENT' and key.kid.hex() == KID_file:
+                print("OK")
+                commandline.append('--key')
+                #key.kid.hex()
+                #2 main high     1  hdr dv hevc
+                commandline.append('{}:{}'.format('2', key.key.hex()))
+        commandline.append(self.get_filename(wvdl_cfg.ENCRYPTED_FILENAME))
+        commandline.append(self.get_filename(wvdl_cfg.DECRYPTED_FILENAME))
+        return commandline