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from mainLogic.utils.glv import Global
from mainLogic.utils.process import shell
from mainLogic.utils.basicUtils import BasicUtils
from mainLogic import error
import os
class Decrypt:
def decrypt(self,path,name,key,mp4d="mp4decrypt",out="None",outfile="",verbose=True,suppress_exit=False):
Global.hr()
# making path absolute if not already absolute
path = BasicUtils.abspath(path)
Global.dprint(f"Decrypting {out}...")
# during various tests
# it was found that the decrypted audio file is named as <name>.en.m4a
# hence a simple logic to work around this issue is to check if the file exists
# if not os.path.exists(f'{path}/{name}.m4a') and out == "Audio":
# name = name + ".en"
# setting extension based on out
# i.e if out is Audio then extension is 'm4a' else 'mp4'
# extension = "m4a" if out == "Audio" else "mp4"
extension = "mp4" # temporary fix
decrypt_command = f'{mp4d} --key 1:{key} {path}/{name}.{extension} {path}/{"" if not outfile else outfile+"-" }{out}.mp4'
if verbose: Global.dprint(f"{out} Decryption Started..."); Global.dprint(f'{decrypt_command}')
# the main part where the decryption happens
code = shell(f'{decrypt_command}',stderr="",stdout="")
# simple check to see if the decryption was successful or not
if code == 0:
Global.dprint(f"{out} Decrypted Successfully")
else:
# if decryption failed then print error message and exit
error.errorList[f"couldNotDecrypt{out}"]["func"]()
if not suppress_exit:
exit(error.errorList[f"couldNotDecrypt{out}"]["code"])
# decrypts audio
def decryptAudio(self,path,name,key,mp4d="mp4decrypt",outfile='None',verbose=True,suppress_exit=False):
self.decrypt(path,name,key,mp4d,"Audio",outfile,verbose,suppress_exit=suppress_exit)
# decrypts video
def decryptVideo(self,path,name,key,mp4d="mp4decrypt",outfile='None',verbose=True,suppress_exit=False):
self.decrypt(path,name,key,mp4d,"Video",outfile,verbose,suppress_exit=suppress_exit) |