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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# CLI interface for the DeDRM plugin (useable without Calibre, too)
# DRM removal
from __future__ import absolute_import, print_function
# Copyright © 2021 NoDRM
#@@CALIBRE_COMPAT_CODE@@
import os, sys
from zipfile import ZipInfo, ZipFile, ZIP_STORED, ZIP_DEFLATED
from contextlib import closing
from standalone.__init__ import print_opt, print_std_usage
iswindows = sys.platform.startswith('win')
isosx = sys.platform.startswith('darwin')
def print_removedrm_help():
from __init__ import PLUGIN_NAME, PLUGIN_VERSION
print(PLUGIN_NAME + " v" + PLUGIN_VERSION + " - Calibre DRM removal plugin by noDRM")
print()
print("remove_drm: Remove DRM from one or multiple files")
print()
print_std_usage("remove_drm", "<filename> ... [ -o <filename> ] [ -f ]")
print()
print("Options: ")
print_opt(None, "outputdir", "Folder to export the file(s) to")
print_opt("o", "output", "File name to export the file to")
print_opt("f", "force", "Overwrite output file if it already exists")
print_opt(None, "overwrite", "Replace DRMed file with DRM-free file (implies --force)")
def determine_file_type(file):
# Returns a file type:
# "PDF", "PDB", "MOBI", "TPZ", "LCP", "ADEPT", "ADEPT-PassHash", "KFX-ZIP", "ZIP" or None
f = open(file, "rb")
fdata = f.read(100)
f.close()
if fdata.startswith(b"PK\x03\x04"):
pass
# Either LCP, Adobe, or Amazon
elif fdata.startswith(b"%PDF"):
return "PDF"
elif fdata[0x3c:0x3c+8] == b"PNRdPPrs" or fdata[0x3c:0x3c+8] == b"PDctPPrs":
return "PDB"
elif fdata[0x3c:0x3c+8] == b"BOOKMOBI" or fdata[0x3c:0x3c+8] == b"TEXtREAd":
return "MOBI"
elif fdata.startswith(b"TPZ"):
return "TPZ"
else:
return None
# Unknown file type
# If it's a ZIP, determine the type.
from lcpdedrm import isLCPbook
if isLCPbook(file):
return "LCP"
from ineptepub import adeptBook, isPassHashBook
if adeptBook(file):
if isPassHashBook(file):
return "ADEPT-PassHash"
else:
return "ADEPT"
try:
# Amazon / KFX-ZIP has a file that starts with b'\xeaDRMION\xee' in the ZIP.
with closing(ZipFile(open(file, "rb"))) as book:
for subfilename in book.namelist():
with book.open(subfilename) as subfile:
data = subfile.read(8)
if data == b'\xeaDRMION\xee':
return "KFX-ZIP"
except:
pass
return "ZIP"
def dedrm_single_file(input_file, output_file):
# When this runs, all the stupid file handling is done.
# Just take the file at the absolute path "input_file"
# and export it, DRM-free, to "output_file".
# Use a temp file as input_file and output_file
# might be identical.
# The output directory might not exist yet.
print("File " + input_file + " to " + output_file)
# Okay, first check the file type and don't rely on the extension.
try:
ftype = determine_file_type(input_file)
except:
print("Can't determine file type for this file.")
ftype = None
if ftype is None:
return
def perform_action(params, files):
output = None
outputdir = None
force = False
overwrite_original = False
if len(files) == 0:
print_removedrm_help()
return 0
while len(params) > 0:
p = params.pop(0)
if p == "--output":
output = params.pop(0)
elif p == "--outputdir":
outputdir = params.pop(0)
elif p == "--force":
force = True
elif p == "--overwrite":
overwrite_original = True
force = True
elif p == "--help":
print_removedrm_help()
return 0
if overwrite_original and (output is not None or outputdir is not None):
print("Can't use --overwrite together with --output or --outputdir.", file=sys.stderr)
return 1
if output is not None and os.path.isfile(output) and not force:
print("Output file already exists. Use --force to overwrite.", file=sys.stderr)
return 1
if output is not None and len(files) > 1:
print("Cannot set output file name if there's multiple input files.", file=sys.stderr)
return 1
if outputdir is not None and output is not None and os.path.isabs(output):
print("--output parameter is absolute path despite --outputdir being set.", file=sys.stderr)
print("Remove --outputdir, or give a relative path to --output.", file=sys.stderr)
return 1
for file in files:
file = os.path.abspath(file)
if not os.path.isfile(file):
print("Skipping file " + file + " - not found.", file=sys.stderr)
continue
if overwrite_original:
output_filename = file
else:
if output is not None:
# Due to the check above, we DO only have one file here.
if outputdir is not None and not os.path.isabs(output):
output_filename = os.path.join(outputdir, output)
else:
output_filename = os.path.abspath(output)
else:
if outputdir is None:
outputdir = os.getcwd()
output_filename = os.path.join(outputdir, os.path.basename(file))
output_filename = os.path.abspath(output_filename)
if output_filename == file:
# If we export to the import folder, add a suffix to the file name.
fn, f_ext = os.path.splitext(output_filename)
output_filename = fn + "_nodrm" + f_ext
if os.path.isfile(output_filename) and not force:
print("Skipping file " + file + " because output file already exists (use --force).", file=sys.stderr)
continue
dedrm_single_file(file, output_filename)
return 0
if __name__ == "__main__":
print("This code is not intended to be executed directly!", file=sys.stderr)
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