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Refactor: Avoid using nested try-except block

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As nesting try-excepts makes readability worst.
This commit is contained in:
FoxRefire 2024-05-31 05:22:22 +09:00
parent 1bcc6ca855
commit 4b60bb6432
1 changed files with 30 additions and 27 deletions
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57
python/pre.py
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@ -7,37 +7,40 @@ import js
import base64
from pyodide.http import pyfetch
def blobsToDevice(cID, pKey):
return Device(client_id=cID, private_key=pKey, type_=DeviceTypes['ANDROID'], security_level=3, flags=None)
async def loadCdm():
# Looking for device.wvd
try:
wvd = await (await pyfetch("device.wvd")).bytes()
return Cdm.from_device(Device.loads(wvd))
except:
pass
# Looking for device_client_id_blob + device_private_key
try:
cID=await (await pyfetch("device_client_id_blob")).bytes()
pKey=await (await pyfetch("device_private_key")).bytes()
return Cdm.from_device(blobsToDevice(cID, pKey))
except:
pass
# Looking for client_id.bin + private_key.pem
try:
cID=await (await pyfetch("client_id.bin")).bytes()
pKey=await (await pyfetch("private_key.pem")).bytes()
return Cdm.from_device(blobsToDevice(cID, pKey))
except Exception as e:
js.document.getElementById('result').value="n0suchd3v1c3f113:r3adth3fuck1ngma2ua1\n\n[MPD?]\nhttps://github.com/FoxRefire/wvg?tab=readme-ov-file#instalation"
raise Exception(e)
# prepare pssh
pssh = PSSH(pssh)
# load device
try:
wvd = await (await pyfetch("device.wvd")).bytes()
device = Device.loads(wvd)
except Exception:
try:
print("device.wvd not found! looking for device_client_id_blob and device_private_key...")
cID=await (await pyfetch("device_client_id_blob")).bytes()
pKey=await (await pyfetch("device_private_key")).bytes()
except Exception:
try:
print("device_client_id_blob and device_private_key not found! looking for client_id.bin and private_key.pem...")
cID=await (await pyfetch("client_id.bin")).bytes()
pKey=await (await pyfetch("private_key.pem")).bytes()
except Exception as e:
js.document.getElementById('result').value="n0suchd3v1c3f113:r3adth3fuck1ngma2ua1\n\n[MPD?]\nhttps://github.com/FoxRefire/wvg?tab=readme-ov-file#instalation"
raise Exception(e)
device = Device(client_id=cID,
private_key=pKey,
type_=DeviceTypes['ANDROID'],
security_level=3,
flags=None)
# load cdm
cdm = Cdm.from_device(device)
cdm = await loadCdm()
# open cdm session
session_id = cdm.open()