DeDRM_tools/DeDRM_plugin/wineutils.py

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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
__license__ = 'GPL v3'
# Standard Python modules.
import os, sys, re, hashlib, traceback
#@@CALIBRE_COMPAT_CODE@@
from __init__ import PLUGIN_NAME, PLUGIN_VERSION
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class NoWinePython3Exception(Exception):
pass
class WinePythonCLI:
py3_test = "import sys; sys.exit(0 if (sys.version_info.major==3) else 1)"
def __init__(self, wineprefix=""):
import subprocess
if wineprefix != "":
wineprefix = os.path.abspath(os.path.expanduser(os.path.expandvars(wineprefix)))
if wineprefix != "" and os.path.exists(wineprefix):
self.wineprefix = wineprefix
else:
self.wineprefix = None
candidate_execs = [
["wine", "py.exe", "-3"],
["wine", "python3.exe"],
["wine", "python.exe"],
["wine", "C:\\Python27\\python.exe"], # Should likely be removed
]
for e in candidate_execs:
self.python_exec = e
try:
self.check_call(["-c", self.py3_test])
print("{0} v{1}: Python3 exec found as {2}".format(
PLUGIN_NAME, PLUGIN_VERSION, " ".join(self.python_exec)
))
return None
except subprocess.CalledProcessError as e:
if e.returncode == 1:
print("{0} v{1}: {2} is not python3".format(
PLUGIN_NAME, PLUGIN_VERSION, " ".join(self.python_exec)
))
elif e.returncode == 53:
print("{0} v{1}: {2} does not exist".format(
PLUGIN_NAME, PLUGIN_VERSION, " ".join(self.python_exec)
))
raise NoWinePython3Exception("Could not find python3 executable on specified wine prefix")
def check_call(self, cli_args):
import subprocess
env_dict = os.environ
env_dict["PYTHONPATH"] = ""
if self.wineprefix is not None:
env_dict["WINEPREFIX"] = self.wineprefix
subprocess.check_call(self.python_exec + cli_args, env=env_dict,
stdin=None, stdout=sys.stdout,
stderr=subprocess.STDOUT, close_fds=False,
bufsize=1)
def WineGetKeys(scriptpath, extension, wineprefix=""):
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if extension == ".k4i":
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import json
try:
pyexec = WinePythonCLI(wineprefix)
except NoWinePython3Exception:
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)
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):
os.makedirs(outdirpath)
if wineprefix != "":
wineprefix = os.path.abspath(os.path.expanduser(os.path.expandvars(wineprefix)))
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try:
result = pyexec.check_call([scriptpath, outdirpath])
except Exception as e:
print("{0} v{1}: Wine subprocess call error: {2}".format(PLUGIN_NAME, PLUGIN_VERSION, e.args[0]))
# try finding winekeys anyway, even if above code errored
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winekeys = []
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winekey_names = []
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# get any files with extension in the output dir
files = [f for f in os.listdir(outdirpath) if f.endswith(extension)]
for filename in files:
try:
fpath = os.path.join(outdirpath, filename)
with open(fpath, 'rb') as keyfile:
if extension == ".k4i":
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new_key_value = json.loads(keyfile.read())
else:
new_key_value = keyfile.read()
winekeys.append(new_key_value)
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winekey_names.append(filename)
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except:
print("{0} v{1}: Error loading file {2}".format(PLUGIN_NAME, PLUGIN_VERSION, filename))
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traceback.print_exc()
os.remove(fpath)
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, winekey_names