mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2025-10-23 23:07:47 -04:00
220 lines
No EOL
6.5 KiB
Python
220 lines
No EOL
6.5 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# CLI interface for the DeDRM plugin (useable without Calibre, too)
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# DRM removal
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from __future__ import absolute_import, print_function
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# Copyright © 2021 NoDRM
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"""
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NOTE: This code is not functional (yet). I started working on it a while ago
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to make a standalone version of the plugins that could work without Calibre,
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too, but for now there's only a rough code structure and no working code yet.
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Currently, to use these plugins, you will need to use Calibre. Hopwfully that'll
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change in the future.
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"""
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#@@CALIBRE_COMPAT_CODE@@
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import os, sys
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from zipfile import ZipInfo, ZipFile, ZIP_STORED, ZIP_DEFLATED
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from contextlib import closing
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from standalone.__init__ import print_opt, print_std_usage
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iswindows = sys.platform.startswith('win')
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isosx = sys.platform.startswith('darwin')
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def print_removedrm_help():
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from __init__ import PLUGIN_NAME, PLUGIN_VERSION
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print(PLUGIN_NAME + " v" + PLUGIN_VERSION + " - Calibre DRM removal plugin by noDRM")
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print()
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print("remove_drm: Remove DRM from one or multiple files")
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print()
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print_std_usage("remove_drm", "<filename> ... [ -o <filename> ] [ -f ]")
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print()
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print("Options: ")
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print_opt(None, "outputdir", "Folder to export the file(s) to")
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print_opt("o", "output", "File name to export the file to")
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print_opt("f", "force", "Overwrite output file if it already exists")
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print_opt(None, "overwrite", "Replace DRMed file with DRM-free file (implies --force)")
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def determine_file_type(file):
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# Returns a file type:
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# "PDF", "PDB", "MOBI", "TPZ", "LCP", "ADEPT", "ADEPT-PassHash", "KFX-ZIP", "ZIP" or None
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f = open(file, "rb")
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fdata = f.read(100)
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f.close()
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if fdata.startswith(b"PK\x03\x04"):
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pass
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# Either LCP, Adobe, or Amazon
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elif fdata.startswith(b"%PDF"):
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return "PDF"
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elif fdata[0x3c:0x3c+8] == b"PNRdPPrs" or fdata[0x3c:0x3c+8] == b"PDctPPrs":
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return "PDB"
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elif fdata[0x3c:0x3c+8] == b"BOOKMOBI" or fdata[0x3c:0x3c+8] == b"TEXtREAd":
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return "MOBI"
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elif fdata.startswith(b"TPZ"):
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return "TPZ"
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else:
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return None
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# Unknown file type
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# If it's a ZIP, determine the type.
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from lcpdedrm import isLCPbook
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if isLCPbook(file):
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return "LCP"
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from ineptepub import adeptBook, isPassHashBook
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if adeptBook(file):
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if isPassHashBook(file):
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return "ADEPT-PassHash"
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else:
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return "ADEPT"
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try:
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# Amazon / KFX-ZIP has a file that starts with b'\xeaDRMION\xee' in the ZIP.
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with closing(ZipFile(open(file, "rb"))) as book:
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for subfilename in book.namelist():
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with book.open(subfilename) as subfile:
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data = subfile.read(8)
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if data == b'\xeaDRMION\xee':
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return "KFX-ZIP"
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except:
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pass
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return "ZIP"
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def dedrm_single_file(input_file, output_file):
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# When this runs, all the stupid file handling is done.
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# Just take the file at the absolute path "input_file"
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# and export it, DRM-free, to "output_file".
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# Use a temp file as input_file and output_file
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# might be identical.
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# The output directory might not exist yet.
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print("File " + input_file + " to " + output_file)
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# Okay, first check the file type and don't rely on the extension.
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try:
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ftype = determine_file_type(input_file)
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except:
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print("Can't determine file type for this file.")
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ftype = None
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if ftype is None:
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return
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def perform_action(params, files):
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output = None
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outputdir = None
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force = False
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overwrite_original = False
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if len(files) == 0:
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print_removedrm_help()
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return 0
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while len(params) > 0:
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p = params.pop(0)
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if p == "--output":
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output = params.pop(0)
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elif p == "--outputdir":
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outputdir = params.pop(0)
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elif p == "--force":
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force = True
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elif p == "--overwrite":
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overwrite_original = True
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force = True
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elif p == "--help":
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print_removedrm_help()
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return 0
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if overwrite_original and (output is not None or outputdir is not None):
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print("Can't use --overwrite together with --output or --outputdir.", file=sys.stderr)
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return 1
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if output is not None and os.path.isfile(output) and not force:
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print("Output file already exists. Use --force to overwrite.", file=sys.stderr)
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return 1
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if output is not None and len(files) > 1:
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print("Cannot set output file name if there's multiple input files.", file=sys.stderr)
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return 1
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if outputdir is not None and output is not None and os.path.isabs(output):
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print("--output parameter is absolute path despite --outputdir being set.", file=sys.stderr)
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print("Remove --outputdir, or give a relative path to --output.", file=sys.stderr)
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return 1
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for file in files:
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file = os.path.abspath(file)
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if not os.path.isfile(file):
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print("Skipping file " + file + " - not found.", file=sys.stderr)
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continue
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if overwrite_original:
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output_filename = file
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else:
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if output is not None:
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# Due to the check above, we DO only have one file here.
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if outputdir is not None and not os.path.isabs(output):
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output_filename = os.path.join(outputdir, output)
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else:
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output_filename = os.path.abspath(output)
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else:
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if outputdir is None:
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outputdir = os.getcwd()
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output_filename = os.path.join(outputdir, os.path.basename(file))
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output_filename = os.path.abspath(output_filename)
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if output_filename == file:
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# If we export to the import folder, add a suffix to the file name.
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fn, f_ext = os.path.splitext(output_filename)
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output_filename = fn + "_nodrm" + f_ext
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if os.path.isfile(output_filename) and not force:
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print("Skipping file " + file + " because output file already exists (use --force).", file=sys.stderr)
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continue
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dedrm_single_file(file, output_filename)
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return 0
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if __name__ == "__main__":
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print("This code is not intended to be executed directly!", file=sys.stderr) |