from __future__ import unicode_literals import io import json import traceback import hashlib import os import subprocess import sys from zipimport import zipimporter from .compat import compat_realpath from .utils import encode_compat_str from .version import __version__ def rsa_verify(message, signature, key): from hashlib import sha256 assert isinstance(message, bytes) byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8 signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode() signature = (byte_size * 2 - len(signature)) * b'0' + signature asn1 = b'3031300d060960864801650304020105000420' asn1 += sha256(message).hexdigest().encode() if byte_size < len(asn1) // 2 + 11: return False expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1 return expected == signature def update_self(to_screen, verbose, opener): """Update the program file with the latest version from the repository""" UPDATE_URL = 'https://yt-dl.org/update/' VERSION_URL = UPDATE_URL + 'LATEST_VERSION' JSON_URL = UPDATE_URL + 'versions.json' UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537) if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, 'frozen'): to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.') return # Check if there is a new version try: newversion = opener.open(VERSION_URL).read().decode('utf-8').strip() except Exception: if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: can\'t find the current version. Please try again later.') return if newversion == __version__: to_screen('youtube-dl is up-to-date (' + __version__ + ')') return # Download and check versions info try: versions_info = opener.open(JSON_URL).read().decode('utf-8') versions_info = json.loads(versions_info) except Exception: if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: can\'t obtain versions info. Please try again later.') return if 'signature' not in versions_info: to_screen('ERROR: the versions file is not signed or corrupted. Aborting.') return signature = versions_info['signature'] del versions_info['signature'] if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY): to_screen('ERROR: the versions file signature is invalid. Aborting.') return version_id = versions_info['latest'] def version_tuple(version_str): return tuple(map(int, version_str.split('.'))) if version_tuple(__version__) >= version_tuple(version_id): to_screen('youtube-dl is up to date (%s)' % __version__) return to_screen('Updating to version ' + version_id + ' ...') version = versions_info['versions'][version_id] print_notes(to_screen, versions_info['versions']) # sys.executable is set to the full pathname of the exe-file for py2exe # though symlinks are not followed so that we need to do this manually # with help of realpath filename = compat_realpath(sys.executable if hasattr(sys, 'frozen') else sys.argv[0]) if not os.access(filename, os.W_OK): to_screen('ERROR: no write permissions on %s' % filename) return # Py2EXE if hasattr(sys, 'frozen'): exe = filename directory = os.path.dirname(exe) if not os.access(directory, os.W_OK): to_screen('ERROR: no write permissions on %s' % directory) return try: urlh = opener.open(version['exe'][0]) newcontent = urlh.read() urlh.close() except (IOError, OSError): if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: unable to download latest version') return newcontent_hash = hashlib.sha256(newcontent).hexdigest() if newcontent_hash != version['exe'][1]: to_screen('ERROR: the downloaded file hash does not match. Aborting.') return try: with open(exe + '.new', 'wb') as outf: outf.write(newcontent) except (IOError, OSError): if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: unable to write the new version') return try: bat = os.path.join(directory, 'youtube-dl-updater.bat') with io.open(bat, 'w') as batfile: batfile.write(''' @echo off echo Waiting for file handle to be closed ... ping 127.0.0.1 -n 5 -w 1000 > NUL move /Y "%s.new" "%s" > NUL echo Updated youtube-dl to version %s. start /b "" cmd /c del "%%~f0"&exit /b" \n''' % (exe, exe, version_id)) subprocess.Popen([bat]) # Continues to run in the background return # Do not show premature success messages except (IOError, OSError): if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: unable to overwrite current version') return # Zip unix package elif isinstance(globals().get('__loader__'), zipimporter): try: urlh = opener.open(version['bin'][0]) newcontent = urlh.read() urlh.close() except (IOError, OSError): if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: unable to download latest version') return newcontent_hash = hashlib.sha256(newcontent).hexdigest() if newcontent_hash != version['bin'][1]: to_screen('ERROR: the downloaded file hash does not match. Aborting.') return try: with open(filename, 'wb') as outf: outf.write(newcontent) except (IOError, OSError): if verbose: to_screen(encode_compat_str(traceback.format_exc())) to_screen('ERROR: unable to overwrite current version') return to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.') def get_notes(versions, fromVersion): notes = [] for v, vdata in sorted(versions.items()): if v > fromVersion: notes.extend(vdata.get('notes', [])) return notes def print_notes(to_screen, versions, fromVersion=__version__): notes = get_notes(versions, fromVersion) if notes: to_screen('PLEASE NOTE:') for note in notes: to_screen(note)