Raphaël G. Git Repositories - youtubedl/blob - youtube_dl/update.py

   1 from __future__ import unicode_literals
   2
   3 import io
   4 import json
   5 import traceback
   6 import hashlib
   7 import os
   8 import subprocess
   9 import sys
  10 from zipimport import zipimporter
  11
  12 from .utils import encode_compat_str
  13
  14 from .version import __version__
  15
  16
  17 def rsa_verify(message, signature, key):
  18     from hashlib import sha256
  19     assert isinstance(message, bytes)
  20     byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8
  21     signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode()
  22     signature = (byte_size * 2 - len(signature)) * b'0' + signature
  23     asn1 = b'3031300d060960864801650304020105000420'
  24     asn1 += sha256(message).hexdigest().encode()
  25     if byte_size < len(asn1) // 2 + 11:
  26         return False
  27     expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1
  28     return expected == signature
  29
  30
  31 def update_self(to_screen, verbose, opener):
  32     """Update the program file with the latest version from the repository"""
  33
  34     UPDATE_URL = 'https://rg3.github.io/youtube-dl/update/'
  35     VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
  36     JSON_URL = UPDATE_URL + 'versions.json'
  37     UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
  38
  39     if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, 'frozen'):
  40         to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
  41         return
  42
  43     # Check if there is a new version
  44     try:
  45         newversion = opener.open(VERSION_URL).read().decode('utf-8').strip()
  46     except Exception:
  47         if verbose:
  48             to_screen(encode_compat_str(traceback.format_exc()))
  49         to_screen('ERROR: can\'t find the current version. Please try again later.')
  50         return
  51     if newversion == __version__:
  52         to_screen('youtube-dl is up-to-date (' + __version__ + ')')
  53         return
  54
  55     # Download and check versions info
  56     try:
  57         versions_info = opener.open(JSON_URL).read().decode('utf-8')
  58         versions_info = json.loads(versions_info)
  59     except Exception:
  60         if verbose:
  61             to_screen(encode_compat_str(traceback.format_exc()))
  62         to_screen('ERROR: can\'t obtain versions info. Please try again later.')
  63         return
  64     if 'signature' not in versions_info:
  65         to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
  66         return
  67     signature = versions_info['signature']
  68     del versions_info['signature']
  69     if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
  70         to_screen('ERROR: the versions file signature is invalid. Aborting.')
  71         return
  72
  73     version_id = versions_info['latest']
  74
  75     def version_tuple(version_str):
  76         return tuple(map(int, version_str.split('.')))
  77     if version_tuple(__version__) >= version_tuple(version_id):
  78         to_screen('youtube-dl is up to date (%s)' % __version__)
  79         return
  80
  81     to_screen('Updating to version ' + version_id + ' ...')
  82     version = versions_info['versions'][version_id]
  83
  84     print_notes(to_screen, versions_info['versions'])
  85
  86     filename = sys.argv[0]
  87     # Py2EXE: Filename could be different
  88     if hasattr(sys, 'frozen') and not os.path.isfile(filename):
  89         if os.path.isfile(filename + '.exe'):
  90             filename += '.exe'
  91
  92     if not os.access(filename, os.W_OK):
  93         to_screen('ERROR: no write permissions on %s' % filename)
  94         return
  95
  96     # Py2EXE
  97     if hasattr(sys, 'frozen'):
  98         exe = os.path.abspath(filename)
  99         directory = os.path.dirname(exe)
 100         if not os.access(directory, os.W_OK):
 101             to_screen('ERROR: no write permissions on %s' % directory)
 102             return
 103
 104         try:
 105             urlh = opener.open(version['exe'][0])
 106             newcontent = urlh.read()
 107             urlh.close()
 108         except (IOError, OSError):
 109             if verbose:
 110                 to_screen(encode_compat_str(traceback.format_exc()))
 111             to_screen('ERROR: unable to download latest version')
 112             return
 113
 114         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 115         if newcontent_hash != version['exe'][1]:
 116             to_screen('ERROR: the downloaded file hash does not match. Aborting.')
 117             return
 118
 119         try:
 120             with open(exe + '.new', 'wb') as outf:
 121                 outf.write(newcontent)
 122         except (IOError, OSError):
 123             if verbose:
 124                 to_screen(encode_compat_str(traceback.format_exc()))
 125             to_screen('ERROR: unable to write the new version')
 126             return
 127
 128         try:
 129             bat = os.path.join(directory, 'youtube-dl-updater.bat')
 130             with io.open(bat, 'w') as batfile:
 131                 batfile.write('''
 132 @echo off
 133 echo Waiting for file handle to be closed ...
 134 ping 127.0.0.1 -n 5 -w 1000 > NUL
 135 move /Y "%s.new" "%s" > NUL
 136 echo Updated youtube-dl to version %s.
 137 start /b "" cmd /c del "%%~f0"&exit /b"
 138                 \n''' % (exe, exe, version_id))
 139
 140             subprocess.Popen([bat])  # Continues to run in the background
 141             return  # Do not show premature success messages
 142         except (IOError, OSError):
 143             if verbose:
 144                 to_screen(encode_compat_str(traceback.format_exc()))
 145             to_screen('ERROR: unable to overwrite current version')
 146             return
 147
 148     # Zip unix package
 149     elif isinstance(globals().get('__loader__'), zipimporter):
 150         try:
 151             urlh = opener.open(version['bin'][0])
 152             newcontent = urlh.read()
 153             urlh.close()
 154         except (IOError, OSError):
 155             if verbose:
 156                 to_screen(encode_compat_str(traceback.format_exc()))
 157             to_screen('ERROR: unable to download latest version')
 158             return
 159
 160         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 161         if newcontent_hash != version['bin'][1]:
 162             to_screen('ERROR: the downloaded file hash does not match. Aborting.')
 163             return
 164
 165         try:
 166             with open(filename, 'wb') as outf:
 167                 outf.write(newcontent)
 168         except (IOError, OSError):
 169             if verbose:
 170                 to_screen(encode_compat_str(traceback.format_exc()))
 171             to_screen('ERROR: unable to overwrite current version')
 172             return
 173
 174     to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')
 175
 176
 177 def get_notes(versions, fromVersion):
 178     notes = []
 179     for v, vdata in sorted(versions.items()):
 180         if v > fromVersion:
 181             notes.extend(vdata.get('notes', []))
 182     return notes
 183
 184
 185 def print_notes(to_screen, versions, fromVersion=__version__):
 186     notes = get_notes(versions, fromVersion)
 187     if notes:
 188         to_screen('PLEASE NOTE:')
 189         for note in notes:
 190             to_screen(note)