mirror of
https://github.com/apprenticeharper/DeDRM_tools
synced 2024-11-16 07:47:18 +01:00
591448d1f5
Separate out logic to find correct python executable, and change to not do shell call with subprocess
112 lines
4 KiB
Python
112 lines
4 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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__license__ = 'GPL v3'
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# Standard Python modules.
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import os, sys, re, hashlib, traceback
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from calibre_plugins.dedrm.__init__ import PLUGIN_NAME, PLUGIN_VERSION
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class NoWinePython3Exception(Exception):
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pass
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class WinePythonCLI:
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py3_test = "import sys; sys.exit(0 if (sys.version_info.major==3) else 1)"
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def __init__(self, wineprefix=""):
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import subprocess
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if wineprefix != "":
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wineprefix = os.path.abspath(os.path.expanduser(os.path.expandvars(wineprefix)))
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if wineprefix != "" and os.path.exists(wineprefix):
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self.wineprefix = wineprefix
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else:
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self.wineprefix = None
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candidate_execs = [
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["wine", "py.exe", "-3"],
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["wine", "python3.exe"],
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["wine", "python.exe"],
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["wine", "C:\\Python27\\python.exe"], # Should likely be removed
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]
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for e in candidate_execs:
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self.python_exec = e
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try:
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self.check_call(["-c", self.py3_test])
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print("{0} v{1}: Python3 exec found as {2}".format(
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PLUGIN_NAME, PLUGIN_VERSION, " ".join(self.python_exec)
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))
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return None
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except subprocess.CalledProcessError as e:
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if e.returncode == 1:
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print("{0} v{1}: {2} is not python3".format(
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PLUGIN_NAME, PLUGIN_VERSION, " ".join(self.python_exec)
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))
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elif e.returncode == 53:
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print("{0} v{1}: {2} does not exist".format(
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PLUGIN_NAME, PLUGIN_VERSION, " ".join(self.python_exec)
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))
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raise NoWinePython3Exception("Could not find python3 executable on specified wine prefix")
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def check_call(self, cli_args):
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import subprocess
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env_dict = os.environ
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env_dict["PYTHONPATH"] = ""
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if self.wineprefix is not None:
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env_dict["WINEPREFIX"] = self.wineprefix
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subprocess.check_call(self.python_exec + cli_args, env=env_dict,
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stdin=None, stdout=sys.stdout,
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stderr=subprocess.STDOUT, close_fds=False,
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bufsize=1)
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def WineGetKeys(scriptpath, extension, wineprefix=""):
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if extension == ".k4i":
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import json
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try:
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pyexec = WinePythonCLI(wineprefix)
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except NoWinePython3Exception:
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print('{0} v{1}: Unable to find python3 executable in WINEPREFIX="{2}"'.format(PLUGIN_NAME, PLUGIN_VERSION, wineprefix))
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return []
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basepath, script = os.path.split(scriptpath)
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print("{0} v{1}: Running {2} under Wine".format(PLUGIN_NAME, PLUGIN_VERSION, script))
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outdirpath = os.path.join(basepath, "winekeysdir")
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if not os.path.exists(outdirpath):
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os.makedirs(outdirpath)
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if wineprefix != "":
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wineprefix = os.path.abspath(os.path.expanduser(os.path.expandvars(wineprefix)))
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try:
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result = pyexec.check_call([scriptpath, outdirpath])
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except Exception as e:
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print("{0} v{1}: Wine subprocess call error: {2}".format(PLUGIN_NAME, PLUGIN_VERSION, e.args[0]))
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# try finding winekeys anyway, even if above code errored
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winekeys = []
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# get any files with extension in the output dir
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files = [f for f in os.listdir(outdirpath) if f.endswith(extension)]
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for filename in files:
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try:
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fpath = os.path.join(outdirpath, filename)
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with open(fpath, 'rb') as keyfile:
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if extension == ".k4i":
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new_key_value = json.loads(keyfile.read())
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else:
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new_key_value = keyfile.read()
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winekeys.append(new_key_value)
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except:
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print("{0} v{1}: Error loading file {2}".format(PLUGIN_NAME, PLUGIN_VERSION, filename))
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traceback.print_exc()
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os.remove(fpath)
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print("{0} v{1}: Found and decrypted {2} {3}".format(PLUGIN_NAME, PLUGIN_VERSION, len(winekeys), "key file" if len(winekeys) == 1 else "key files"))
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return winekeys
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