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 .compat import compat_str
  13
  14 from .version import __version__
  15
  16
  17 def rsa_verify(message, signature, key):
  18     from struct import pack
  19     from hashlib import sha256
  20
  21     assert isinstance(message, bytes)
  22     block_size = 0
  23     n = key[0]
  24     while n:
  25         block_size += 1
  26         n >>= 8
  27     signature = pow(int(signature, 16), key[1], key[0])
  28     raw_bytes = []
  29     while signature:
  30         raw_bytes.insert(0, pack("B", signature & 0xFF))
  31         signature >>= 8
  32     signature = (block_size - len(raw_bytes)) * b'\x00' + b''.join(raw_bytes)
  33     if signature[0:2] != b'\x00\x01':
  34         return False
  35     signature = signature[2:]
  36     if b'\x00' not in signature:
  37         return False
  38     signature = signature[signature.index(b'\x00') + 1:]
  39     if not signature.startswith(b'\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20'):
  40         return False
  41     signature = signature[19:]
  42     if signature != sha256(message).digest():
  43         return False
  44     return True
  45
  46
  47 def update_self(to_screen, verbose, opener):
  48     """Update the program file with the latest version from the repository"""
  49
  50     UPDATE_URL = "https://rg3.github.io/youtube-dl/update/"
  51     VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
  52     JSON_URL = UPDATE_URL + 'versions.json'
  53     UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
  54
  55     if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, "frozen"):
  56         to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
  57         return
  58
  59     # Check if there is a new version
  60     try:
  61         newversion = opener.open(VERSION_URL).read().decode('utf-8').strip()
  62     except Exception:
  63         if verbose:
  64             to_screen(compat_str(traceback.format_exc()))
  65         to_screen('ERROR: can\'t find the current version. Please try again later.')
  66         return
  67     if newversion == __version__:
  68         to_screen('youtube-dl is up-to-date (' + __version__ + ')')
  69         return
  70
  71     # Download and check versions info
  72     try:
  73         versions_info = opener.open(JSON_URL).read().decode('utf-8')
  74         versions_info = json.loads(versions_info)
  75     except Exception:
  76         if verbose:
  77             to_screen(compat_str(traceback.format_exc()))
  78         to_screen('ERROR: can\'t obtain versions info. Please try again later.')
  79         return
  80     if 'signature' not in versions_info:
  81         to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
  82         return
  83     signature = versions_info['signature']
  84     del versions_info['signature']
  85     if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
  86         to_screen('ERROR: the versions file signature is invalid. Aborting.')
  87         return
  88
  89     version_id = versions_info['latest']
  90
  91     def version_tuple(version_str):
  92         return tuple(map(int, version_str.split('.')))
  93     if version_tuple(__version__) >= version_tuple(version_id):
  94         to_screen('youtube-dl is up to date (%s)' % __version__)
  95         return
  96
  97     to_screen('Updating to version ' + version_id + ' ...')
  98     version = versions_info['versions'][version_id]
  99
 100     print_notes(to_screen, versions_info['versions'])
 101
 102     filename = sys.argv[0]
 103     # Py2EXE: Filename could be different
 104     if hasattr(sys, "frozen") and not os.path.isfile(filename):
 105         if os.path.isfile(filename + '.exe'):
 106             filename += '.exe'
 107
 108     if not os.access(filename, os.W_OK):
 109         to_screen('ERROR: no write permissions on %s' % filename)
 110         return
 111
 112     # Py2EXE
 113     if hasattr(sys, "frozen"):
 114         exe = os.path.abspath(filename)
 115         directory = os.path.dirname(exe)
 116         if not os.access(directory, os.W_OK):
 117             to_screen('ERROR: no write permissions on %s' % directory)
 118             return
 119
 120         try:
 121             urlh = opener.open(version['exe'][0])
 122             newcontent = urlh.read()
 123             urlh.close()
 124         except (IOError, OSError):
 125             if verbose:
 126                 to_screen(compat_str(traceback.format_exc()))
 127             to_screen('ERROR: unable to download latest version')
 128             return
 129
 130         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 131         if newcontent_hash != version['exe'][1]:
 132             to_screen('ERROR: the downloaded file hash does not match. Aborting.')
 133             return
 134
 135         try:
 136             with open(exe + '.new', 'wb') as outf:
 137                 outf.write(newcontent)
 138         except (IOError, OSError):
 139             if verbose:
 140                 to_screen(compat_str(traceback.format_exc()))
 141             to_screen('ERROR: unable to write the new version')
 142             return
 143
 144         try:
 145             bat = os.path.join(directory, 'youtube-dl-updater.bat')
 146             with io.open(bat, 'w') as batfile:
 147                 batfile.write('''
 148 @echo off
 149 echo Waiting for file handle to be closed ...
 150 ping 127.0.0.1 -n 5 -w 1000 > NUL
 151 move /Y "%s.new" "%s" > NUL
 152 echo Updated youtube-dl to version %s.
 153 start /b "" cmd /c del "%%~f0"&exit /b"
 154                 \n''' % (exe, exe, version_id))
 155
 156             subprocess.Popen([bat])  # Continues to run in the background
 157             return  # Do not show premature success messages
 158         except (IOError, OSError):
 159             if verbose:
 160                 to_screen(compat_str(traceback.format_exc()))
 161             to_screen('ERROR: unable to overwrite current version')
 162             return
 163
 164     # Zip unix package
 165     elif isinstance(globals().get('__loader__'), zipimporter):
 166         try:
 167             urlh = opener.open(version['bin'][0])
 168             newcontent = urlh.read()
 169             urlh.close()
 170         except (IOError, OSError):
 171             if verbose:
 172                 to_screen(compat_str(traceback.format_exc()))
 173             to_screen('ERROR: unable to download latest version')
 174             return
 175
 176         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 177         if newcontent_hash != version['bin'][1]:
 178             to_screen('ERROR: the downloaded file hash does not match. Aborting.')
 179             return
 180
 181         try:
 182             with open(filename, 'wb') as outf:
 183                 outf.write(newcontent)
 184         except (IOError, OSError):
 185             if verbose:
 186                 to_screen(compat_str(traceback.format_exc()))
 187             to_screen('ERROR: unable to overwrite current version')
 188             return
 189
 190     to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')
 191
 192
 193 def get_notes(versions, fromVersion):
 194     notes = []
 195     for v, vdata in sorted(versions.items()):
 196         if v > fromVersion:
 197             notes.extend(vdata.get('notes', []))
 198     return notes
 199
 200
 201 def print_notes(to_screen, versions, fromVersion=__version__):
 202     notes = get_notes(versions, fromVersion)
 203     if notes:
 204         to_screen('PLEASE NOTE:')
 205         for note in notes:
 206             to_screen(note)